14 results about "Crank" patented technology

The invention relates to an automation control device for the fluid flow speed. The problems are effectively solved that in an existing fluid flow speed control process, manual adjustment is needed, the adjustment process is inaccurate, in the flow speed control process, real-time autonomous control cannot be achieved, and a valve is blocked by impurities. According to the technical scheme, the device comprises a supporting rack, a middle water conveying pipe and an upper water conveying pipe. A propeller blade located on the right side of an upper port of the middle water conveying pipe is rotatably connected into the upper water conveying pipe, a crank driving gear is fixedly and coaxially connected to the propeller blade, a crank driven gear rotatably connected with the supporting rackis meshed with the side of the crank driving gear and coaxially and fixedly connected with a crank driving belt wheel located on the left side of the upper water conveying pipe, and the crank drivingbelt wheel is connected with the crank driven belt wheel coaxially and rotatably connected to the left end of the upper water conveying pipe. The automation control device for the fluid flow speed issimple in structure and high in practicability.

The invention discloses a variable-diameter flaring machine for PVC pipe production. The variable-diameter flaring machine comprises a bottom plate, wherein a heating box is arranged at the center ofthe front end of the bottom plate; electric heating nets are arranged on the two sides of the interior of the heating box; a movable plate is arranged on the left side of the heating box; hydraulic rods are horizontally and fixedly connected with the center of the left side of the bottom plate rightwards; extension blocks are fixedly connected with the left ends of the hydraulic rods; a pluralityof extrusion heads are arranged at the right ends of the extension blocks; a storing box is fixedly connected with the upper end of the left side of the bottom plate; a first screw rod is horizontallyinserted in the center of the bottom plate of the right end of the heating box in a penetrating manner; the right end of the first screw rod penetrates through the center of the right side of the bottom plate; a crank is fixedly connected with the right end of the first screw rod; and a first screw hole is formed in the center of a movable rod. According to the variable-diameter flaring machine,the extrusion heads are in threaded connection with the extension blocks, the thread facilitates detaching and change of the extrusion heads, and the extrusion heads with different model numbers are stored in the storing box and facilitate selection and change, so that the practicality of the variable-diameter flaring machine is improved.

The invention discloses a mounting base for an industrial robot and a mounting method thereof, and relates to the technical field of ultralow-temperature pulverization. The mounting base for the industrial robot comprises a base, a supporting plate, a lifting box and a mounting plate, the supporting plate is fixedly arranged at the top of the base, the lifting box is fixedly arranged on the uppersurface of the supporting plate, and lifting mechanisms are arranged in the lifting box. According to the mounting base and the mounting method thereof, an operator rotates a crank to drive a rotatingshaft to rotate, the rotating shaft rotates in a U-shaped groove, a driving bevel gear drives a driven bevel gear to rotate, lead screws are driven to do lifting motion, then the mounting plate is driven to do lifting motion, the height of the industrial robot is conveniently adjusted, the use requirement of the industrial robot is met, and therefore the practicability of the device is improved;and meanwhile, limiting rods are arranged on the side walls, connected to the lead screws, of the mounting plate and the lifting box, the height of the mounting plate is limited through the limiting rods, excessive axial pressure of the lead screws caused by excessive height of the mounting plate is avoided, and the stability of the device is improved.

The invention relates to the technical field of aerospace, in particular to a dual-mode switch box, which comprises a shell, a mounting panel, a mounting bottom plate, a crank connecting rod mechanism, a switch box assembly, a first electric connector, a second electric connector and a wire, and is characterized in that the first electric connector, the switch box assembly and the second electricconnector are sequentially fixed on the mounting bottom plate from left to right; the shell is vertically fixed to the top face of the mounting bottom plate, a cavity is formed in the shell, the edgeof the bottom of the shell is flush with the edge of the top face of the mounting bottom plate, the mounting panel is vertically fixed to the top of the shell, and an opening allowing the crank-link mechanism to move is formed in the center of the mounting panel. The middle section of the crank connecting rod mechanism is rotatably connected into the opening through a rivet, the tail end of the crank connecting rod mechanism is connected with the switch box assembly, the crank connecting rod mechanism is provided with a first protruding block, the mounting panel is provided with a second protruding block for limiting the position of the first protruding block, and the switch box assembly has the advantages of being small in size, capable of preventing misoperation and the like.

The invention relates to an electric operating mechanism of a molded case circuit breaker, which comprises a mechanism frame, a shell and an electric operating assembly, and is characterized in that the electric operating assembly comprises a motor arranged on the mechanism frame, a gear set in linkage fit with an output shaft of the motor, and a rocker arm set which is in linkage fit with the gear set and used for driving a circuit breaker handle to execute opening or closing, the rocker arm set comprises two driving shafts which are rotationally arranged on two side plates of the mechanism frame respectively and are in linkage fit with the gear set, two rocker arms in linkage fit with the two driving shafts respectively, a driving rod arranged between the two rocker arms, and a shiftingframe which is arranged between the two side plates in a sliding manner and is used for driving the circuit breaker handle to execute opening or closing, two crank arms are respectively arranged between the driving rod and the shifting frame, and the two crank arms act along with the driving rod and can drive the shifting frame to slide between the two side plates in a reciprocating manner. The electric operating mechanism has the advantages of simple structure, stable and reliable performance, safety, reliability, small volume, low cost and long service life.

An elliptical machine comprises an elliptical machine body, a rear seat, a handle, a pedal connecting rod, a connecting rod and a flywheel, the rear seat is arranged on the rear side of the elliptical machine body, a rail is arranged on the rear seat, the handle is arranged on the elliptical machine body in a swinging mode, the flywheel is rotationally arranged on the elliptical machine body, and one end of the pedal connecting rod is hinged to the lower end of the handle; and the connecting rod and the pedal connecting rod are mutually hinged together, one end of the connecting rod is arranged on the track through a roller, the other end of the connecting rod is connected with the flywheel through a crank arm, the elliptical machine is characterized in that an inertia wheel is rotatably arranged on the elliptical machine body, a belt wheel is coaxially arranged on one side of the inertia wheel, and the inertia wheel and the belt wheel are in transmission through a belt. According to the elliptical machine provided by the invention, when a trainee is trained, the pause feeling can be avoided, so that the fluency of the training process is improved.

The invention discloses a hollow glass shutter. The hollow glass shutter comprises a transverse frame, a vertical frame, shutter transverse scales, shutter vertical scales, hollow glass shutters, a square pipe, a motor base, a short shaft, a long shaft, a crank and a connecting rod, wherein the vertical frame and the transverse frame form a square mounting frame through corner connectors, a mounting plate is arranged on the vertical frame, of the multiple hollow glass shutters are arranged in the vertical direction, and four sides of the hollow glass shutters are correspondingly arranged in the two shutter transverse scales and the two shutter vertical scales; the section of each shutter vertical scale is C-shaped, lap joint pieces extend in the reverse direction of openings on the basis of a C-shaped section of each shutter transverse scale, shaft sleeves are arranged on the peripheries of the short shaft and the long shaft, the short shaft and the long shaft are rotationally connected with the vertical frame through the shaft sleeves, the motor base is mounted on the vertical frame close to one side of the long shaft, and a motor is arranged on the motor base; the motor transmits power to a connecting push arm, the push arm transmits the power to the long shaft through a connecting rod mechanism composed of the crank and the connecting rod, and a complete rotating pair is formed. The hollow glass shutter is good in air tightness, good in water tightness, high in wind pressure resistance and high in thermal-insulation performance.

An embodiment of the present invention provides an elliptical trainer composed of structures featuring a first amplitude, a second amplitude, and a third amplitude. By the driving of cranks and the combination of the three amplitudes, the elliptical trainer's pedals move along a closed ellipse path. In addition, the first amplitude is more than twice or three times of the third amplitude, resulting in a wide adjustment range of the stride of the pedal. Accordingly, the elliptical trainer is applicable to users with various heights.

The invention relates heating equipment, in particular to uniform heating equipment for a cylindrical workpiece. The invention solves the technical problem to provide the uniform heating equipment forthe cylindrical workpiece with the advantages that uniform heating can be achieved, so that oxidation and decarburization of the metal surface can be avoided. The uniform heating equipment for the cylindrical workpiece comprises a base and sliding rails, wherein the sliding rails are symmetrically arranged at the front side and the back side of the left side of the upper part of the base; the uniform heating equipment for the cylindrical workpiece also comprises a rotating mechanism and a sliding plate; the sliding plate is glidingly arranged on the sliding rails at the front side and the back side; and the rotating mechanism is arranged at the left side of the upper part of the sliding plate. The uniform heating equipment for the cylindrical workpiece has the advantages that the uniformheating is achieved, so that the effect of avoiding oxidation and decarburization of the metal surface can be achieved; by manually rotating an operating crank, the sliding plate can rightwards move,so that the cylindrical workpiece is pushed into a heating box; and due to uniform temperature distribution in the heating box, the cylindrical workpiece can achieve the effect of uniform heating in the heating box in the heating process.

The invention discloses a middle shaft structure of an exercise bicycle. The center shaft structure includes a left middle shaft, a right middle shaft, a limiting sleeve, locking bolts, a left side crank, a right side crank, a bearing sleeve, a rolling bearing and a main frame, wherein the bearing sleeve is connected into the main frame; the rolling bearing is mounted in the bearing sleeve; the left middle shaft is connected into the rolling bearing; the limiting sleeve is mounted between the left and right rolling bearings; the right side of the left middle shaft is connected with the right middle shaft; the locking bolts are installed in the left middle shaft and the right middle shaft; the left side of the left middle shaft is connected with the left side crank; the right side of the right middle shaft is connected with the right side crank; and the middle shaft can ensure that the phenomenon that locking nuts are loosened in the rotating process of the cranks is avoided, and axialforce between bearings is eliminated.

The invention discloses an experimental method for the backlash characteristic of an experimental platform. The experimental method for exploring the influence of backlash on mechanism dynamics comprises the following steps: step 1, rotating a backlash pre-tightening piece to finely adjust the position of a pinion; step 2, rotating a locking hand wheel to fix a large gear; step 3, rotating a dialto enable a pointer to point to a zero scale; step 4, shifting a pinion, recording the swing angle of the pointer, and the recording a corresponding gear backlash value at the moment; step 5, reversely rotating the locking hand wheel to loosen a large gear; step 6, driving a motor to move, and enabling an output shaft of the motor to drive an execution sliding block to move back and forth on a stepped guide rod through a coupler, a small gear shaft, the pinion, the large gear, a crank and a connecting rod; and step 7, recording data measured by the sensor.

The invention discloses a carrying truck for red brick production. The carrying truck for red brick production comprises a moving mechanism, a carrying mechanism, a sliding mechanism and a control mechanism, sliding blocks are slidably connected to the two ends of the inner side of the top of the carrying mechanism, fixing plates are fixedly connected to the bottoms of the sliding blocks, rotatingpieces are arranged on the left sides of the front faces of the fixing plates, and rotating cranks are fixedly connected to the surfaces of the rotating pieces; and a left clamping device and a rightclamping device are slidably connected to the two sides of the bottom of the fixing plate. According to the carrying truck for red brick production, a notch is formed in the top of the surface of a sliding mechanism, obtuse angle treatment is conducted on the bottom of one end of a movable plate movably installed on the inner side of the top of the surface of the sliding mechanism, the movable plate is attached to the ground, and the movable plate is movably connected with the notch in a clamped mode; a worker pulls out the movable plate through a handle, grooves are formed in the two sides of the top surface of the movable plate, and pulleys are rotatably connected into the grooves, so that workers can conveniently carry or unload the red bricks from the truck under the action of the pulleys, the labor intensity of the workers is reduced, the working time of the workers is shortened, and the working efficiency is improved.

The invention discloses adjustable stamping equipment for hardware product machining. Aiming at the problems that stamping is not stable enough, and linear stamping work is not facilitated, the following scheme is proposed, the adjustable stamping equipment comprises a frame body, a rectangular groove is formed in one side of the inner wall of the bottom of the frame body, an air suction plate isfixedly connected to the inner wall of the bottom of the rectangular groove, the surface of the air suction plate is flush with the inner wall of the bottom of the frame body, a supporting plate is adsorbed to the outer wall of the top of the air suction plate, a dust suction mechanism is arranged on the inner wall of the bottom of the frame body, a motor box is fixedly connected to the outer wallof one side of the frame body, a motor is fixedly connected to the inner wall of the motor box, a transmission shaft is in key connection with one end of a motor output shaft, and the circumferentialouter wall of the transmission shaft is connected with a driving wheel in a sleeved mode. After the motor is started, the driving wheel is driven to rotate, a driven wheel is driven to rotate througha conveying belt, then a crank connecting rod on the surface of the driven wheel moves up and down, and therefore a stamping block conducts linear stamping work under limiting of a sleeve.