95results about How to "Easy to assemble and disassemble" patented technology

The invention discloses a lamp cloth mounting device which comprises a main support. A detachable movable support is arranged on the main support, the main support comprises a first supporting rod, and the upper portion of the first supporting rod is fixedly connected with the middle of the second supporting rod. At least two bearing shafts are fixed to the left side and the right side of the second supporting rod, each bearing shaft is connected with a pulley through a second bearing, and an inserting opening is formed at the upper end of the first supporting rod. The lower end of the first supporting rod is fixedly connected with one end of a third supporting rod, a fourth supporting rod is fixed to the other end of the third supporting rod, and a first bearing is arranged on the fourthsupporting rod and is provided with a circular supporting plate. The movable support comprises a fifth supporting rod, a sixth supporting rod is fixed to one end of the fifth supporting rod, and a seventh supporting rod is fixed to the other end of the fifth supporting rod. The lamp cloth mounting device is simple in structure, is convenient to manufacture, is convenient and flexible to operate, is capable of saving time and labor, is higher in practicability and lower in cost, enables the mounting quality to be effectively controlled, the working efficiency to be improved and the market competitiveness to be enhanced, and generates the remarkable economic benefits.

The invention discloses a buffer device for a guard bar of a construction site and belongs to the technical field of protecting devices. The buffer device comprises a bottom plate. Supporting columns are symmetrically arranged on the bottom plate, buffer assemblies are transversely connected to the upper and lower ends of the supporting columns, a protecting net is arranged among the buffer assemblies, strut angles are connected below the bottom plate, each buffer assembly comprises a bidirectional shaft sleeve, semi-circular grooves rotatably matched with bulbs are formed in two ends of each bidirectional shaft sleeve, each bulb is connected to one end of a telescopic spring while the bulb connected to the other end of the telescopic spring is located in a unidirectional shaft sleeve, and each unidirectional shaft sleeve is connected to a fastener. The buffer device can adsorb ambient dust. Most of joints have the amount of movement. The buffer device is high in impact resistance, high in flexibility, relatively convenient to assemble the parts and good in stability.

The invention discloses a forced lubrication device and method for a sliding block for pushing. The device comprises the sliding block, and grease injection holes and main grease channels are formed in the sliding block. Grease pipes are connected with grease distributors and the grease injection holes. Grease grooves are formed in sliding plates, and the sliding plates are connected with the sliding block through sunk screws. The sliding block is provided with a separation baffle. Lubricating grease is injected into the grease distributors, passes through the grease pipes and the grease injection holes and enters the main grease channels of the sliding block until the lubricating grease is distributed in the crisscrossed grease grooves of the sliding plates, and the purpose of forced lubrication is achieved. The device is convenient to disassemble and assemble, and on-site construction efficiency is high; forced lubrication of the sliding block can be achieved, and the problem that lubrication is insufficient through an existing method is solved; the uniformity and high efficiency of lubrication of the sliding block are guaranteed, and waste of the lubrication grease and consumption of the sliding block are reduced.

The invention provides an automatic feeding and discharging bi-directional metal filing briquetting device. The metal filing briquetting device comprises a briquette outlet region, a feeding region, a briquetting region, a first push plate, a first press plate, two second press plates, a second push plate, a third push plate and a driving mechanism, wherein briquette outlet region, the feeding region and the briquetting region are sequentially connected in a through mode, the first push plate is used for pushing metal filing in the feeding region into the briquetting region, the first press plate is used for compressing and forming the metal filing in the briquetting region from top to bottom, the two second press plates are used for horizontally and oppositely compressing and forming the metal filing in the briquetting region, the second push plate is used for pushing out a compressed and formed metal briquette in the briquetting region to the feeding region, and the third push plate is used for pushing out the metal briquette in the feeding region to the briquette outlet region. The invention further provides an automatic feeding and discharging bi-directional metal filing briquetting method. A hydraulic execution mechanism is used, the metal filing is briquetted in the mode of adopting horizontal compression and vertical compression at the same time, automatic feeding, briquetting and briquette taking are achieved, the device has large power and is low in noise and high in efficiency, the iron turning is regular to form and easy to transport, and the briquetting device is suitable for efficient and energy-saving industrial production system.

The invention discloses an installation structure of an auxiliary wheel of a child bicycle. The installation structure comprises the auxiliary wheel, a support frame and a bicycle rear axle, wherein the support frame is used for installing the auxiliary wheel; the bicycle rear axle is used for installing the support frame; a fixed seat is fixedly connected to the bicycle rear axle by a nut; clamping grooves are formed in both sides of the fixed seat; a boss is arranged on the outer side of the top end of the fixed seat; clamping hooks which are matched with the clamping grooves of the fixed seat are arranged on both sides of the upper part of the support frame; a hinge seat is fixedly connected to the front surface of the support frame; a handle which faces downwards is hinged to the hinge seat by virtue of a hinge shaft; a hook is hinged to the handle. When the clamping hooks of the support frame are pushed into the clamping grooves in the both sides of the fixed seat, the handle is rotated upwards, so that the boss on the outer side of the top end of the fixed seat is hooked by the hook; and then the handle is rotated downwards, so that the boss is tightened by the hook, and the fixed seat is pressed against the support frame. According to the installation structure, the auxiliary wheel of the child bicycle can be conveniently installed and removed without the help of a special tool.

The invention provides a deep well rescuing device which is used for rescuing persons trapped in a deep well. The deep well rescuing device comprises a bearing structure, a positioning mechanism, a clamping mechanism, a position adjustment mechanism, a lifting mechanism, a master control system and a communication device, wherein the bearing mechanism comprises a plurality of support plates and a plurality of support shafts, and all the support plates and the support shafts form the multi-layer bearing structure; the positioning mechanism is used for positioning the deep well rescuing device to a well wall so as to prevent the deep well rescuing device from swinging; the clamping mechanism is used for enabling a mechanical arm to rotate by small angles in a pivoted mode in the radial direction in the rescuing process so as to fasten the trapped person in the deep well rescuing device; the position adjustment mechanism is used for adjusting the mechanical arm to an appropriate position in the circumferential direction so as to stretch the mechanical arm into the well; the lifting mechanism is used for making direct contact with the human body and protecting the person in the deep well rescuing device.

The invention relates to the technical field of cotton processing machinery, and discloses a machine-harvested cotton cleaning device and a use method thereof. The machine-harvested cotton cleaning device comprises a case; a lint cotton channel is arranged in the case; a lint cotton inlet of the lint cotton channel is located in one side of the case; a lint cotton outlet pipeline of the lint cotton channel is located at the top of the case; the end, away from the case, of the lint cotton outlet pipeline is detachably connected with a butt joint pipeline through a locking mechanism; and the locking mechanism comprises a first butt joint ring arranged on the ginned cotton outlet pipeline in a sleeving mode, a second butt joint ring arranged on the butt joint pipeline in a sleeving mode and a locking assembly used for locking and fixing the first butt joint ring and the second butt joint ring. According to the machine-harvested cotton cleaning device, the lint cotton outlet pipeline and the butt joint pipeline are connected through the first butt joint ring, the second butt joint ring and the locking mechanism, a user can disassemble and assemble the lint cotton outlet pipeline and the butt joint pipeline conveniently, the butt joint pipeline can be installed on the lint cotton outlet pipeline more stably, and the impurity removal efficiency is prevented from being affected.

The invention relates to a measuring tool and method for measuring the thickness of an adjusting gasket of guide vane equipment. The measuring tool comprises a shaft component and two rotary measuringcomponents which are symmetrically arranged at the two ends of the shaft component. The rotation measuring part comprises a rotating part capable of rotating around a shaft part, and a dial indicatorinstalled on the rotating part. The two rotating pieces are kept fixed at the axial positions of the shaft component, the opposite inner side end faces of the two rotating pieces are straight faces and are parallel to each other, a measuring rod of the dial indicator is perpendicular to the inner side end faces of the rotating pieces, and the measuring head is located on the inner sides of the rotating pieces. The measuring method is carried out by adopting the measuring tool and is used for determining the thickness of the adjusting gasket between the connecting flange and the web plate of the base. The measuring tool is simple in structure, easy and convenient to operate, convenient to disassemble and assemble and high in measuring accuracy, the high-precision adjusting gasket can be obtained through the measuring method carried out through the measuring tool, and the installing precision of the guide vane equipment is guaranteed.

The invention discloses a processing method and a processing device of high-strength spring gasket assembling holes. The processing method comprises the following steps of precasting blanks, clampingthe blanks, performing processing and shaping and disassembling spare parts. The processing device comprises a fixture body, compressing screws and a locking gasket, wherein the fixture body comprisesa clamped section and a pressing plate; a positioning groove and a placing groove are formed in the end of the clamped section; the placing groove can accommodate spring gaskets to be processed; threaded holes which are matched with the compressing screws are formed in two sides of the clamped section and two sides of the pressing plate; an arc groove is formed in the pressing plate; the lockinggasket is located in the positioning groove; a boring hole is formed in the locking gasket; and the pressing plate is connected with the fixture body through a manner that the compressing screws penetrate through the corresponding threaded holes, so that fixing the spring gasket in the positioning groove is realized. Through the adoption of the processing device disclosed by the invention, the assembling holes are processed, the technology is simple and easy to operate; when the processing efficiency is improved, the processing reliability is improved, the generality is good, operation and usage are convenient, and the processing device is suitable for popularization and application.

The invention discloses a universal spin-on filter adopting a two-stage integrated composite filter element, which includes a shell and a filter element arranged inside the shell. The filter element includes an upper end cover, a lower end cover, filter paper and polyamide melt blown The mouth of the shell is provided with a threaded connecting plate, and a number of oil inlet through holes are arranged around the threaded through hole of the threaded connecting plate, and the oil entering the oil inlet pipe of the filter seat enters the shell and Between the filter elements; the outer edge of the threaded connecting plate is provided with a number of symmetrically distributed protruding teeth, and the mouth of the housing is provided with a groove matching the protruding teeth. The circumferential scale of the protruding teeth is smaller than that of the groove. The bottom of the body is provided with an elastic support, and under the action of the elastic support, the threaded connecting plate is pressed between the mouth of the housing and the oil outlet of the filter element. The invention solves the problem that the filter element in the existing filter housing cannot be replaced, has the characteristics of strong dirt holding capacity, high filtering precision, and is suitable for filtering various oil products.

The invention provides a multi-channel air pressure acquisition device. The multi-channel air pressure acquisition device comprises an air path device and an acquisition device. The air path device comprises a device body, air path joints and sealing devices. The acquisition device comprises acquisition circuit boards and a control circuit board. Pressure sensitive devices are arranged on the acquisition circuit boards and a sensor chip is arranged the control circuit board. Air paths connecting the air path joints and the pressure sensitive devices, and air paths connecting the air path joints and the sensor chip are arranged in the device body. The sealing devices are arranged at inlets and outlets of the air paths. According to the invention, multiple independent pressure sensors are integrated into the circuit board, air pressure acquisition devices have independent air paths and all the air paths are integrated into the device body, so the mechanism of the multi-channel air pressure acquisition device is greatly simplified; hardware resources are saved; the size, the weight and the manufacturing cost of the device are reduced; and the multi-channel air pressure acquisition device is easy to disassemble and maintain and suitable for air pressure measurement in various kinds of environments.

The invention discloses a light source module. The light source module comprises at least one light source assembly and at least one connector. Each light source assembly comprises a first base plate and at least one light-emitting element. Each first base plate comprises a connecting end, a plate body part, at least one groove and a first electric connecting part. Each groove and the corresponding first electric connecting part are arranged at the corresponding connecting end. Each light-emitting element is allocated at the plate body part of the corresponding first base plate. Each groove is located between the corresponding light-emitting element and the corresponding first electric connecting part. The connectors are allocated at the connecting ends of the first base plates. Each connector comprises at least one fixing piece and a second electric connecting part. The fixing pieces are embedded into the grooves and used for fixing the first base plates. The second electric connecting parts are electrically connected with the first electric connecting parts. By means of the structures of the light source assemblies and the connectors of the light source module, assembling and disassembling of circuit boards are better facilitated.

The invention discloses a multifunctional mounting and dismounting tool special for a large bearing, and relates to the technical field of bearing mounting and dismounting. The tool comprises a base,a supporting plate is movably arranged at the top of the base, an ejection device and a bearing carrying device are fixedly arranged at the top of the supporting plate, a hoisting device is fixedly arranged at the top of the bearing carrying device, a clamping device is fixedly arranged on one side of the ejection device, a first motor is fixedly installed in the base, and an output shaft of the first motor is fixedly connected with a rotating block. Two lead screws are arranged to rotate, the two lead screws can drive corresponding nut bases to do relative motion, clamping blocks can fixedlyclamp the large bearing, then two connecting gears rotate, the two connecting gears can drive a fixing frame to move in the direction away from a clamping box, the large bearing is dismounted, the effect of facilitating mounting and dismounting is achieved, the workload of workers is reduced, and the effect of improving the working efficiency is achieved.

The invention provides a net cage model test platform which is characterized in that two platform main beams stretch across rails and move through towing of a trailer. A platform framework is formed by the platform main beams via longitudinal connecting rods and transverse connecting rods through connection. The middle of the platform frame is provided with connecting supports which are used for installing a volume measuring instrument. The four corners and the front part of the platform framework are provided with clamping plates which are used for installing photographing rods and towing rods. One side of the platform framework is provided with a lateral photographing operation rod. Waterproof cameras are adopted to act as cameras which are provided with LED lighting lamps and fixed at the bottom part of the photographing operation rod. The top part of each towing rod is provided with a tension sensor bracket which is used for placing a tension sensor, and the bottom part of each towing rod is provided with slide wheels which act as transmission devices of tension steel ropes of a model test. Multi-angle model images are transmitted to a display end by the photographing devices arranged at the four corners and the sides of the platform. Tension data are measured by the tension sensors and transmitted to the computer display end and the data are read in real time and saved. The whole platform structure is connected with the tail part of the trailer via a connecting device arranged at the front end.

The invention relates to a people injury preventing device of a tower crane detecting gate. The people injury preventing device comprises an installing base and an air hook, wherein a through hole is formed in the installing base; the installing base is fixedly arranged inside a gate frame groove at the bottom of the back side of the tower crane detecting gate; a first side end of the air hook is inserted into the through hole and can rotate by taking the side end as the shaft; and a second side end of the air hook is inserted into a preserved hole in a gate frame when the tower crane detecting gate is in the opening state, and is closed in the gate frame groove of the tower crane detecting gate when the tower crane detecting gate is in the closed state. By utilizing the people injury preventing device, the situation that the detecting gate is closed by accident when being opened is prevented, so that the problem in the prior art that the tower crane detecting gate lacks the people injury prevention function is solved.

The invention discloses a moulded case circuit breaker mounting seat. The moulded case circuit breaker mounting seat comprises a mounting seat body, a branch copper bar safety baffle and an outlet terminal safety baffle; the moulded case circuit breaker mounting seat is in a modular structure, is assembled in a flexible way, and is conveniently and quickly mounted and dismounted. All parts can be conveniently, integrally formed, the production is beneficially improved, the production cost is reduced, the expandability is high, and the continuous assembly can be achieved, and therefore, different length requirements are satisfied.

The invention discloses a bicycle rear goods rack with a panel integrally formed. The bicycle rear goods rack with the panel integrally formed comprises the panel, supports, connecting rods, fixing blocks and elastic binding strap positioning pieces, wherein the supports are connected with the middle of the panel, the connecting rods are located at the bottom of the panel in front of the supports, the fixing blocks and the elastic binding strap positioning pieces are located at the lower ends of the supports, and the panel is of an integrally formed structure. The supports are divided into a front group and a rear group, beams are formed at the tops of the two groups of supports, and the panel and the beams are movably connected together through screws. Because the panel is of the integrally formed structure and movably connected with the supports through screws to replace a welded structure, not only is the production technology simplified, but also the bicycle rear goods rack with the panel integrally formed is convenient to disassemble and assemble, and meanwhile the strength of the bicycle rear goods rack is guaranteed.

The invention discloses a discharge hopper. The discharge hopper is formed by four side plates having the same shape in an enclosing manner; the shape of each side plate is an isosceles trapezoid and the waists of each side plate are provided with bent edges; the bent edges of every two adjacent side plates are connected and fixed through a bolt. The discharge hopper has the advantages of simple structure, convenient manufacturing, mounting and demounting and dispatching, and saving of dispatching space. Meanwhile, the present invention also discloses a mixing station with the discharge hopper.

The invention discloses a male and female stepped shaft, a double-shaft mutual-choking hinged connection device and engineering machinery. The male and female stepped shaft comprises a male pin shaft and a female pin shaft; each of the male pin shaft and the female pin shaft is a stepped shaft formed by sequentially connecting a connecting surface, a bearing surface, a limiting surface and a clamping handle, and a through hole penetrating through the stepped shaft is formed in the center of the stepped shaft; when the male pin shaft and the female pin shaft are used in a paired mode, the borne radial force is partially converted into axial force, and mutual choking and interlocking are achieved. The double-shaft conjugating hinged connection device comprises a movable assembly, a spherical hinge assembly, a fastening accessory and a fixed assembly. The fixing assembly comprises a male and female stepped shaft, a penetrating part and a pressing plate part. The male pin shaft and the female pin shaft are inserted from the two sides of an inner ring mounting hole of the spherical hinge assembly in a paired mode, the male pin shaft and the female pin shaft are axially connected through the penetrating part, and the male pin shaft and the female pin shaft are radially pressed and axially limited through the pressing plate part. Compared with an existing traditional hinge connecting device, the fixing mode of the hinge connecting device is more reliable, the dismounting and mounting performance is good, and the hinge connecting device has excellent maintenance convenience.

The invention discloses an extensible collector ring which comprises a stator and a rotating shaft of the collector ring, wherein the stator comprises a housing and upper and lower covers, a lower bearing is arranged between the lower end portion of the rotating shaft and the lower cover, an upper rotary cover is fixed on the upper end portion of the rotating shaft, an upper bearing is arranged between the upper rotary cover and the upper cover, a plurality of electric slip rings sleeving the rotating shaft are arranged in the cavity of the stator, and a plurality of electric slip rings are superposed along the axial direction and fixed on the lower end of the lower rotary cover through bolts. A plurality of elastic electric brushes are correspondingly arranged outside the plurality of electric slip rings, corresponding electric slip rings and the elastic electric brushes are electrically connected through electric metal wires on the elastic electric brushes, and the elastic electric brushes are extensibly arranged between the upper and lower covers through brush extensible devices. The extensible collector ring is simply structured and wear resistant, and the input and output lead quantity of the collector ring can be increased conveniently and flexibly to satisfy different requirements.

The invention relates to a tubular material cutter with a blade easy to replace. The tubular material cutter with the blade easy to replace solves the problem that in the prior art, the blade of a pipe cutting tool is inconvenient to disassemble and assemble, and comprises a cutting base body with an installation inner cavity, one end of the cutting base body is provided with an arc-shaped pipe body positioning part, the other end of the cutting base body is provided with a base body handle, the end, provided with the base body handle, of the cutting base body is rotationally provided with a pressing handle corresponding to the base body handle, a cutter moving groove communicating with the installation inner cavity is formed in the end, provided with the pipe body positioning part, of the cutting base body, a cutting blade extending into the installation inner cavity is movably arranged in the cutter moving groove in a penetrating mode, the cutting blade is rotationally connected with the cutting base body through a quick-release rotating mounting structure, and a cutting linkage mechanism capable of driving the cutting blade to move towards the pipe body positioning part when the pressing handle swings towards the base body handle is arranged between the cutting blade and the pressing handle. The tubular material cutter has the advantages that the blade is convenient to disassemble and assemble, the operation is simple, and the linkage is good.

The invention discloses a multifunctional electrocardiograph monitoring rapid electrode mounting film, which comprises an electrocardiograph monitoring electrode body, an electrode disassembly and assembly adjusting mechanism and an electrode rapid mounting film body. The periphery of the bottom of the electrocardiograph monitoring electrode body is in lap joint with an electrode disassembly and assembly adjusting mechanism, the middle of the electrocardiograph monitoring electrode body is fixedly connected with a rapid electrode mounting film, electrode wire binding columns are fixedly connected to the two sides of the top end of the electrocardiograph monitoring electrode body, and a peripheral light supplementing lamp is fixedly connected to the periphery of the front face of the electrode disassembly and assembly adjusting mechanism. The peripheral light supplementing lamp endows the device with the multifunctional light supplementing performance of the device well, the electrode disassembly and assembly adjusting mechanism well achieves the effects of convenient disassembly and assembly and adjustability, the electrode rapid installation film enables air input to be separatedfrom occlusion fixation, installation is rapid and convenient, and the electrocardiograph monitoring electrode rapid collection mechanism well reflects the collection convenience of the device. Therefore, the device is suitable for the technical field of medical instruments and has a wide development prospect in the future.

The invention discloses a front plate assembly for a dump truck. The front plate assembly comprises a top cover plate, a front plate transverse rib and a web plate, wherein the top cover plate and the front plate transverse rib are in the same length and are arranged in parallel; a plurality of front plate upper vertical ribs are connected between the top cover plate and the front plate transverse rib; a plurality of front plate lower vertical ribs are fixedly arranged at the lower end of the front plate transverse rib; the front plate upper vertical ribs and the front plate lower vertical ribs are arrayed in an interlaced manner; the lateral walls of the top cover plate, the front plate transverse rib, the front plate upper vertical ribs and the front plate lower vertical ribs are fixed on the web plate; a top cover plate lateral closing plate and a front stand column top reinforcing plate are arranged at the upper end of the top cover plate. According to the front plate assembly disclosed by the invention, the front plate upper vertical ribs and the front plate lower vertical ribs are arranged on the top cover plate and the front plate transverse rib in the interlaced manner, so that the strength is improved; the front plate assembly has a good bearing capability, is not liable to damage, is simple in structure and convenient to assemble and disassemble, so that the requirements of users can be met.

The invention relates to an anti-falling indoor air conditioner. The anti-falling indoor air conditioner comprises a hanging board (3), a detachable upper base (1) and a detachable lower base (2). A hanging structure is arranged between the upper base (1) and the hanging board (3). The hanging board (3) is provided with baffles (4). The upper base (1) is provided with limiting blocks (5). The limiting blocks (5) are located under the baffles (4). An upper water chute (11) is formed in the lower portion of the upper base (1). A front water chute (12) is formed in the front portion of the lower base (2). The left side of the lower base (2) is provided with a side water chute (13) communicating with the front water chute (12). The left side of the upper base (1) is provided with a water guide port (14) capable of draining condensate water in the upper water chute (11) into the side water chute (13) is formed in the left side of the upper base (1). The anti-falling indoor air conditioner has the advantages that the anti-falling structure is simple; the upper base and the hanging board are convenient to dismantle; accordingly, assembly and daily maintenance of the indoor air conditioner are facilitated, and water leakage of the indoor air conditioner can be prevented.

The invention discloses a chopsticks box, wherein the chopsticks box comprises a box body, a base plate and a water collector box; the box body is provided with openings respectively in upper and lower ends; trough plates are respectively convexly arranged on the front and rear sides of the bottom of the box body downwards; first grooves and second grooves are concavely arranged on the trough plates in a transverse direction; first guide rails are respectively arranged on the front and rear sides of the base plate, and the front and rear sides of the base plate are respectively movably clamped and embedded in the first grooves of the trough plate on the same side by virtue of the first guide rails; drain holes are arranged in the base plate; second guide rails are respectively arranged on the front and rear sides of the water collector box; and the front and rear sides of the water collector box are movably clamped and embedded in the second grooves of the trough plate on the same side by virtue of the second guide rails. The chopsticks box disclosed by the invention is simple in structure and convenient to disassemble and assemble, so that the chopsticks box is convenient to clean; and the chopsticks box disclosed by the invention is relatively low in cost.

The invention discloses a drying table support. The drying table support comprises a base plate (1) and a top plate (5); a plurality of bases (2) are arranged at the lower end of the base plate (1) along the axial direction of the base plate (1); supporting blocks (3) are arranged on the same side of the bases (2) respectively; the upper end surface of the base plate (1) and the lower end surface of the top plate are provided with a plurality of jack groups respectively; a plurality of connecting rods (4) are arranged between the base plate (1) and the top plate (5); the lower end of every connecting rod (4) is fixed in the corresponding jack group of the base plate (1) in a penetrating mode; the upper end of every connecting rod (4) is fixed in the corresponding jack group of the top plate (5) in a penetrating mode. According to the drying table support, the support structure which is formed by the base plate, the top plate and the connecting rods through construction and comprises a plurality of gap frames is utilized and accordingly multiple specifications of wall bodies can be placed in the support structure to be dried, the detachment and the installation are simple and convenient, the space utilization rate is high, the drying effect is good, and the application range is wide.

The invention relates to a short circuit protection device for a rocket projectile storage and transportation launching box, and belongs to the technical field of projectiles and rockets. The short circuit protection device comprises a protection cap and a short circuit body. The protection cap comprises a box cover, a spiral groove screw, a compression spring, an ejecting rod, a spring, a screw plug and an ejecting rod support. The short circuit body comprises a supporting frame, a conductive disc, a pin cushion, pins, a bare wire, a pressing ring and long screw. According to the short circuit protection device, the split structure of the short circuit body and the protection cap is used so as to ensure that the short circuit protection device can be conveniently and quickly disassembledand assembled; the short circuit body is clamped by the compression spring and the ejecting rod in the protection cap so as to ensure the reliable conduction between all the pins and the conductive sheets. The short circuit protection device has reliable short circuit effect and high safety.

The invention discloses a lifting type monitoring camera shooting device. The device comprises a gear box and supports; a through hole is formed in the right end of the gear box, a connecting rod penetrates through the through hole, a rotating handle is fixedly connected to the right end of the connecting rod, and a bevel gear is connected to the left end of the connecting rod; and a gear is meshed to the left side of the bevel gear, a threaded outer rod is arranged on the upper surface of the gear, a threaded inner rod is rotationally connected to the interior of the threaded outer rod, the upper end of the threaded inner rod is connected to a battery box, and a threaded rod is arranged in a threaded block and fixing blocks in a penetrating mode. Most of the existing monitoring devices are fixedly installed to a wall body, so that the maintenance and detection are quite inconvenient; however, according to the lifting type monitoring camera shooting device, a lifting mode is adopted, and the device is fixed by the matching between the threaded rod and the threaded block, so that workers do not need to climb up to work when detection and maintenance are carried out, the risk of theworkers during working can be reduced, and assembling and disassembling by a user are facilitated.