90 results about "Piston rod" patented technology

The invention discloses a supporting device and a supporting method for machining a propeller blade. The supporting device consists of a base and a vacuum sucker component positioned on the base, wherein the base comprises a bottom vacuum sucker, a chassis, a hydraulic cylinder and a piston rod, the middle of the bottom of the chassis is connected with the bottom vacuum sucker, the middle of the top of the chassis is provided with the hydraulic cylinder, the bottom end of the piston rod extends into the hydraulic cylinder, and the vacuum sucker component comprises a limiting switch, a spring, a support, a mandril, a positioning screw and a top sucker. The propeller blade is analyzed and calculated to determine the area in which the supporting device is positioned. For the propeller blade with the diameter less than 4 meters, supporting points of the supporting device are distributed at five positions of the propeller blade; and for the propeller blade with the diameter more than 4 meters, the supporting points of the supporting device are distributed at seven positions of the propeller blade. According to the invention, supporting can be quickly completed, and the stiffness of the supporting device and a supporting effect of the propeller blade can be improved.

A damper includes: a cylinder; a piston rod disposed to be movable linearly in the cylinder; and a plurality of damping members installed between the cylinder and the piston rod, and generating a damping force by multi-stage so that when a vibration transmitted from the cylinder to the piston rod or from the piston rod to the cylinder is big, a strong damping force is generated, whereas when a vibration is small, a weak damping force is generated. A damping force is generated by stages depending on a displacement of a vibration transferred from the cylinder to the piston or from the piston to the cylinder. If a small amount of vibration is transferred, a weak damping force is generated, whereas if a large amount of vibration is transferred, a strong damping force is generated. Accordingly, a vibration damping performance can be improved.

The invention relates to deep-sea mining operation equipment, and specifically relates to a submarine mining vehicle walking chassis and self-rescue method thereof. one ends of front and rear telescoping racks are respectively in telescoping connection with the front and rear sides of a body; push-and-pull oil cylinders are installed on the front and rear sides of the body; piston rods of the twopush-and-pull oil cylinders are connected to the front and rear telescoping racks; the front and rear telescoping racks can stretch out and draw back through the driving of the push-and-pull oil cylinders; the other ends of the front and rear telescoping racks are connected to stepping oil cylinders; piston rods of the stepping oil cylinders are connected to supporting sliding shoes which can accomplish the support stepping when the slipping or difficult travelling of a track system occurs; and the elevating of the supporting sliding shoes can be realized through the driving of the stepping oil cylinders. Through the combination of track travelling and support stepping, the walking chassis can adapt various complex terrains on the deep seabed, perform timely self-rescue when the slipping or difficult travelling of tracks occurs, and successfully accomplish deep seabed mining missions.

The invention discloses an electric static liquid actuator for deep sea. An integrated-type integrated structure is adopted. The movement of a hydraulic cylinder is controlled by a two-way hydraulic pump. The forward and reverse of a motor is adjusted and controlled, and the displacement and accelerated speed of a piston rod of the hydraulic cylinder are controlled through speed regulation operation; and a hydraulic direction-changing valve, a reducing valve and other control valves are cancelled, and an arranged sensor monitors and adjusts the working condition of a system. A pressure compensator is arranged outside the system and used for compensating system pressure and adapting high pressure environment of the deep sea. A hydraulic circuit adopts a plate-type connection without external connection pipelines, only an interface for power supply and signal transmission is arranged on the exterior of the hydraulic circuit, the advantages of a hydraulic actuating system and an electricactuating system are both had, system composition is simplified greatly, and the equipment volume is greatly reduced. Therefore, the electric static liquid actuator for the deep sea has a wide application prospect in deep-sea operating equipment and shipping equipment.

The invention discloses a large-opening-and-closing-angle manipulator. The large-opening-and-closing-angle manipulator comprises a mounting plate, a mounting frame, a piston rod, a double-sided rack,a pair of clamping jaws positioned on both sides of the mounting frame and connecting rod linkage mechanisms for controlling the opening and closing of the clamping jaws. The mounting frame is fixed on one side of the mounting plate. The piston rod passes through the mounting plate and is in sliding fit with the mounting plate. The free end of the piston rod is fixedly connected with the double-sided rack. The connecting rod linkage mechanisms are symmetrically arranged on both sides of the double-sided rack. Each connecting rod linkage mechanism comprises a driving connecting rod and a clamping jaw connecting rod. One end of each driving connecting rod is hinged to the corresponding clamping jaw, and the other end of each driving connecting rod is hinged to the mounting frame. Multiple engaged teeth are arranged at the end, hinged to the mounting frame, of each driving connecting rod. The engaged teeth are engaged with the double-sided rack. Each clamping jaw connecting rod is positioned in front of the corresponding driving connecting rod. One end of each clamping jaw connecting rod is hinged to the mounting frame, and the other end of each clamping jaw connecting rod is hinged to the corresponding clamping jaw. The large-opening-and-closing-angle manipulator has the beneficial effects of being simple in structure, large in opening and closing angle, stable and reliable to use, high in clamping accuracy and uniform in clamping force on workpieces.

The invention discloses a bolt type hydraulic lifting system and belongs to the technical field of marine tools. The system is characterized in that multiple columns of bolt holes are formed in a pile leg, and a fixed ring beam and a movable ring beam are sequentially arranged in the axial direction of the pile leg from top to bottom; multiple first bolt assemblies are arranged on the fixed ring beam, and multiple second bolt assemblies are arranged on the movable ring beam; the two ends of each lifting cylinder are correspondingly connected with the fixed ring beam and the movable ring beam; the fixing ends of multiple balancing cylinders of the system are hinged to a fixing frame, and piston rods of the balancing cylinders are hinged to the fixed ring beam; and accumulators of the system correspondingly communicate with rod chambers of the balancing cylinders and rodless chambers of the balancing cylinders. By the adoption of the bolt type hydraulic lifting system, the service life of the bolt assemblies can be prolonged.

The invention relates to a mobile roller-type van-type heating furnace and a hot-forming subsection strengthening technique. The mobile roller-type van-type heating furnace comprises a shell, heat preservation cotton is arranged on the inner side of the shell, and a furnace door is arranged on one side of the shell. The mobile roller-type van-type heating furnace is characterized in that the shell is divided into multiple areas through one or more isolation doors, and the upper portion of each isolation door is connected with a piston rod of a telescopic cylinder. The hot-forming subsection strengthening technique is characterized by comprising the steps that 1, a boron steel workpiece is led in a furnace chamber inside the shell through rotary rollers at room temperature; 2, the contraction cylinder descends to make the lower end of the isolation door be 5-50 mm away from the workpiece; meanwhile, the isolation door divides the furnace chamber into a hard area and a soft area, the hard area is heated to be 880-930 DEG C, and the soft area is heated to be 500-800 DEG C; 3, when the workpiece is heated to be a specified heating temperature, the workpiece is led out from the heating furnace through the rotary rollers, and hot-forming punching and cooling are conducted on the workpiece. By means of the mobile roller-type van-type heating furnace and the hot-forming subsection strengthening technique, subsection strengthening production of workpieces can be achieved.

The invention discloses a straw crushing mixed feed preparation device, which comprises a storage bin, a conveyor belt, a brake device, a steering wheel, a support rod, a cross bar, a hydraulic cylinder, a No. 1 motor, a frame body, a No. 2 motor, and a discharge pipe , cut-off valve, stirring roller, feed hopper, crushing blade, stirring shaft, crushing cylinder, straw feeding hopper, partition, baffle and feed mixing box, the partition set on the conveyor belt can prevent the straw from slipping, and the baffle can Limit the movement of the straw to prevent the straw from slipping out. The conveyor belt conveys the straw to the top of the straw feeding hopper. The inclination angle of the conveyor belt is adjusted through the expansion and contraction of the piston rod of the hydraulic cylinder. The cross bar connects the support rod to the side of the cylinder of the hydraulic cylinder Connect to improve the stability of the conveyor belt, start the No. 2 motor to drive the stirring roller to stir, and fully mix the crushed straw and feed evenly, which is convenient for ruminants to eat.

Disclosed is a machine tool cutting force simulation loading device so as to mainly solve the problems that prior machine tool cutting force simulation loading devices are complicated in structure, small in load and not suitable for experimenting on large high-speed numerically-controlled machine tools. The device is characterized in that the outside of a loading mandrel (4) is connected with a radial bearing sleeve (15) through rolling bearings B (18), a rotary element (16) is arranged on the outside of the radial bearing sleeve (15), a radial hydraulic cylinder (11) is arranged in a groove of the rotary element (16), a piston rod of the radial hydraulic cylinder (11) abuts against the outer surface of the radial bearing sleeve (15), and the rotary element (16) is connected with a servo motor (6) through a belt (8). An axial bearing sleeve (12) is arranged at the right end of the loading mandrel (4), and an axial hydraulic cylinder (13) is arranged in the axial bearing sleeve (12). The device has the advantages of being simple in structure, large in load range and applicable to machine tools of various types.

The invention discloses a sprue plugging device for casting a sand mold at low pressure and a method for casting the sand mold at low pressure. A groove is formed in a cast straight sprue part; a plugging piece is put into the groove; a square pouring hole is formed in the plugging piece; a plugging guide hole is formed in the back of a lower sand mold; an oil cylinder is arranged on the outer side of the guide hole; and a piston rod of the oil cylinder extends into the cast guide hole. The plugging method comprises the following steps that when a control system receives a signal indicating that the low-pressure casting is finished, the piston rod of the oil cylinder is controlled to quickly extend and pushes casting sand in a casting mold to forwards move together with the plugging piece along the guide hole; after reaching a certain travel, the oil cylinder stops moving, and the low-pressure casting pressurization system exhausts air and releases pressure; the plugging piece is staggered to separate a straight sprue; the plugged casting mold and a casting which is not completely solidified can move away from a pouring position, and the casting mold is overturned, cooled and solidified; and another casing mold is moved to the pouring position to be poured. The sprue plugging device is mainly used for manufacturing low-pressure cast complete equipment.

The invention relates to an automatic passing and clamping machine for a long tail clamp. The automatic passing and clamping machine comprises a bracket and a vibration disc fixed on the bracket, wherein a main guide plate is fixedly and aslant arranged on the bracket, and comprises a runner slot for moving the clamp body and a plurality of lower through holes on the bottom of the runner slot; a runner is connected with the vibration disc and the main guide plate, and is downwards inclined towards the main guide plate from the vibration disc; an upper fixing plate is movably arranged right above the main guide plate; the side, close to the main guide plate, of the upper fixing plate is fixedly provided with a clamp body positioning plate; the clamp body positioning plate comprises a positioning slot which is corresponding to the lower through hole on position and adapts to the shape of clamp body; a locking air cylinder and a passing and clamping air cylinder are arranged on the upper fixing plate; the piston rod of the locking air cylinder is connected with the main guide plate; the passing and clamping air cylinder is parallel to the main guide plate; a pushing plate is arranged on the outer end part of the piston rod; the main guide plate close to the upper fixing plate side is provided with a hanger positioning plate; the hanger positioning plate comprises upper through holes which are corresponding to the lower through holes and used for passing through the clamp body; the lower fixing plate is movably arranged below the main guide plate, and comprises a top rod capable of getting through the upper through holes and the lower through holes; a jacking and clamping air cylinder is arranged on the lower fixing plate; the piston rod of the jacking and clamping air cylinder is connected with the main guide plate. The automatic passing and clamping machine has the advantages of high passing and clamping speed and high production efficiency.

The invention provides a grinding filter component. The component comprises a grinding cylinder, a push rod, a grinding disc and a grinding plate, wherein the grinding plate is provided with a plurality of filter holes; the grinding disc is connected with the push rod; the grinding cylinder is provided with a feed inlet; a plurality of grinding pillars are distributed on the grinding disc; the grinding pillars extend out of the front end surface of the grinding disc. The component is reasonable in structure, full in grinding and high in efficiency. The invention further provides a bone slurry machine. The bone slurry machine comprises the grinding filter component, a double-output shaft motor, a squeezing component and a rotating component, wherein the squeezing component comprises an oil pump and an oil cylinder; a first output shaft of the double-output shaft motor is connected with the oil pump; a piston rod of the oil cylinder is connected with a press rod; a drive box is arranged on the front side of the press rod; the press rod extends into a cavity of the drive box and is connected with a contacting block; a ball thrust bearing is arranged inside the cavity of the drive box; the rotating component comprises a turbine and a turbine rod sleeve; the turbine is mounted on the push rod; the turbine rod sleeve is matched with a second output shaft; a fixed block is arranged on the second output shaft. The bone slurry machine has a broad application range, and can be used for grinding rigid grinding materials.

The invention discloses a disturbing force compensation method of a two-degree-of-freedom double electro-hydraulic vibrostand array simulation system. The two-degree-of-freedom double electro-hydraulic vibrostand array simulation system comprises a lower platform, a six-degree-of-freedom vibrostand, a two-degree-of-freedom vibrostand, a pier A, a pier B and a bridge board. According to the disturbing force compensation method disclosed by the invention, pressure difference signals of two chambers of hydraulic cylinders in 10 valve-controlled cylinder cylinders and acceleration signals of piston rods of the hydraulic cylinders are collected, and disturbing force compensation signals are obtained by calculation. Driving signals of the valve-controlled cylinder cylinders are adjusted by usingthe disturbing force compensation signals to achieve the purpose of improving the control precision of the array simulation system. By application of the disturbing force compensation method proposedby the invention, the fluctuation 6dB of amplitude-frequency characteristics of a closed-loop transfer function of a rolling degree-of-freedom position in the vicinity of 18 Hz can be reduced within2dB, and the fluctuation 16dB of the amplitude-frequency characteristics of the closed-loop transfer function of a pitching degree-of-freedom position in the vicinity of 35 Hz can be reduced within 4dB, and the control precision of the array simulation system is obviously improved.

The invention discloses an automatic feeding hopper turnover mechanism of a plastic container forming machine. The automatic feeding hopper turnover mechanism is characterized by comprising a frame consisting of transverse strips, vertical strips and oblique strips, wherein the frame is connected with a lifting and turnover mechanism; the lifting and turnover mechanism comprises a box rack consisting of transverse rods, vertical rods and oblique rods; rotating components are arranged between the vertical rods and the vertical strips, and the box rack is rotationally matched with the frame through the rotating components; a cylinder support is arranged at the front ends of the transverse strips of the frame, the cylinder support is connected with a cylinder, a piston rod of the cylinder isconnected with the front end of a rotating rack, and the rear end of the rotating rack is connected with the vertical rods of the box rack; and the box rack is in contact with a blank holding box. When the machine works, the blank holding box filled with plastic bottle blanks is artificially placed on the box rack, the cylinder is started, the piston rod of the cylinder upwards jacks and pushes the rotating rack, the rotating rack drives the box rack to incline to one side through the rotating components between the connected vertical rods and vertical strips, and the plastic bottle blanks inthe blank holding box are automatically poured into a storage barrel; and the machine is simple and convenient to use and high in speed, and reduces the labor intensity of personnel.

The invention belongs to the technical field of tunnel kilns, and particularly relates to a double-cylinder kiln car pusher which can be used for a tunnel kiln. A kiln car can continuously run by the aid of the double-cylinder kiln car pusher. The double-cylinder kiln car pusher comprises a kiln car pusher body device, two hydraulic cylinders and two car pushing traveling devices, wherein the kiln car pusher body device comprises a cylinder front transverse fixing plate, a cylinder rear transverse fixing plate, two cylinder traveling tracks and a cylinder traveling double-track combination, the two hydraulic cylinders comprise a left cylinder, a right cylinder and two piston rods, and the two car pushing traveling devices comprise cylinder pushing running fixing frames, shaft sleeves, pulleys, props, a fourth positioning switch, a third positioning switch, a first positioning switch and a second positioning switch. The double-cylinder kiln car pusher has the advantages that the kiln car can continuously run, burnt products are assuredly uniformly heated in a high-temperature zone, and the quality of the products is stable.

The invention discloses a machining device for producing external balance thermal expansion valves of a QPW5 automobile air conditioner. The machining device comprises an acid liquid pool, a support column arranged on one side of the acid liquid pool, a rotating disc arranged on the support column, carrier trays arranged on the rotating disc and a mounting frame arranged above the acid liquid pool; a hydraulic cylinder is arranged on the mounting frame; a push rod is arranged on a piston rod of the hydraulic cylinder; a first drive motor for driving the rotating disc to rotate is arranged on the support column; a plurality of first through cavities matched with the carrier trays are formed in the rotating disc; a second drive motor for driving the push rod to rotate is arranged on the piston rod of the hydraulic cylinder; and a first connecting groove matched with the push rod is formed in each carrier tray. The rotating disc and the push rod are matched with each other, so that the carrier trays full of valve bodies continuously rotate to the position above the acid liquid pool, the difficulty of loading, unloading and replacing the carrier trays is reduced, the carrier trays areable to work continuously, and the efficiency of machining the valve bodies is improved.

The invention discloses a multi-station automatic conveying mechanism for work-pieces. The multi-station automatic conveying mechanism comprises a base. Side plates are arranged at the two ends of the base. A left driving oil cylinder and a right driving oil cylinder are arranged outside the two side plates respectively, a left driving block is arranged on the end portion of a piston rod of the left driving oil cylinder, the stroke of the left driving oil cylinder is left air cylinder stroke, and the piston rod end of the right driving oil cylinder is connected with a driving rod. Two sliding rods are arranged between the side plates and provided with initial stations, a plurality of work stations arranged at intervals and finishing stations from left to right. A left locating block, a right locating block, a left sliding block and a right sliding block are arranged on each work station on the base, the driving rod penetrates through the left locating blocks, the right locating blocks, the left sliding blocks and the right sliding blocks, the left sliding blocks and the right sliding blocks are arranged on the sliding rods in a sleeved mode and driven by the driving rod, the left sliding blocks and the right sliding blocks move to the left locating blocks when a piston rod of the right driving oil cylinder is pushed out, and the left sliding blocks and the right sliding blocks move to the right locating blocks when the piston rod of the right driving oil cylinder is retracted.

The invention provides a two-position two-way piston type flanged buffer multi-medium angle seat valve, which comprises a valve body. A valve gate is arranged in the valve body, a joint end cap is arranged at the top of the valve body, a compression thread insert penetrates into a bottom cap, a rear cap is arranged at the top of a cylinder, a piston is arranged in the cylinder, and the tail end of a piston rod penetrates through the compression thread insert, a connecting sleeve and the joint end cap and is arranged in the valve body and fixed to the valve gate. The two-position two-way piston type flanged buffer multi-medium angle seat valve is characterized in that the front end of the piston is arranged in the compression thread insert, a buffer ring is arranged between the compression thread insert and the front end of the piston, a flange is arranged at an end of the valve body, and the valve body is connected with a pipeline through the flange. An open-close implementation control component is provided with a buffer device having a speed regulating function, the service condition of high pressure is effectively ensured, and impact and vibration noise is eliminated. As a flange connector is used for mounting the valve body, the valve body is more firmly connected with the pipeline of a user when in use, the valve is safer and more reliable, and the service performance of the valve is greatly improved.

The invention discloses an extruder oil cylinder piston rod and a novel oil cylinder structure. The piston rod comprises a piston rod body, wherein a connecting through hole is formed in the front end of the piston rod body; a slide bearing is inserted in the connecting through hole; the outer wall of the slide bearing is fixed on the inner wall of the connecting through hole; a hinge shaft is inserted in the slide bearing; the two ends of the hinge shaft extend outside the connecting through hole to form radial edges; screwing sections are formed at the two ends of the hinge shaft; a hinge plate is screwed on the screwing sections; the screwing sections are screwed with two locking nuts; the hinge plate is clamped between one locking nut and the radial edges; and the bottom end of the piston rod body is inserted on a piston head. An oil cylinder adopting the extruder oil cylinder piston rod comprises a cylinder body, wherein the cylinder body consists of a side wall cylinder and a cylinder bottom; the cylinder bottom is screwed on the side wall cylinder; the piston rod body and the piston head are inserted in the cylinder body; the length of the piston rod body can be changed as required to satisfy requirements; and meanwhile, the cylinder body adopts a split structure, so that the disassembly and the maintenance are convenient.

The invention relates to the technical field of motor machining equipment, in particular to a motor winding stator iron core inner and outer surface special automatic cleaning machine and an application method thereof. A machine tool is provided with a lower support and an upper support, and the upper support is located over the lower support. A push broach through hole penetrating through the upper and lower end surfaces of a table board is formed in the upper end of the table board of the lower support. A stator base is arranged on the upper end surface of the table board, and a center through hole of the stator base communicates with the push broach through hole. A stator inner hole push broach oil cylinder is vertically mounted on the lower portion of the lower support through a push broach oil cylinder mounting plate, and a stator inner hole push broach is fixedly mounted at the end of a piston rod of the stator inner hole push broach oil cylinder. The stator inner hole push broach is located under the push broach through hole. A two-stage oil cylinder is arranged inside the upper support and located over the stator base. A stator pressed colored cover is mounted at the end ofa first-stage piston rod of the two-stage oil cylinder, and a paint scraper assembly is mounted at the end of a second-stage piston rod of the two-stage oil cylinder. The motor winding stator iron core inner and outer surface special automatic cleaning machine and the application method thereof have the beneficial effects of manpower saving, high efficiency, quality guaranteeing, comprehensive and one-time impurity removing and the like.