228results about How to "Control rotation angle" patented technology

The invention discloses a full-automatic telescopic rotatable camera. The full-automatic telescopic rotatable camera comprises a connecting assembly, a transmission mechanism and a power motor which are connected in sequence. The connecting assembly is connected to the camera; the power motor has a first running direction and a second running direction which are opposite. In the first running direction, the camera is driven by the power motor through the transmission mechanism to extend out of an accommodating space in which the camera is located, and the rotation angle of the camera is controlled. In the second running direction, the camera is driven by the power motor through the transmission mechanism to retract to the accommodating space. The full-automatic telescopic rotatable camera provided by the invention can be controlled by terminal equipment, and therefore, the status switching of the camera is realized in a full-automatic manner, and the operation is very convenient.

The invention discloses a method and a device for tracking control of solar electrical energy generation. The method comprises the following steps: automatically selecting a maximum power tracking mode or a timed tracking mode according to the level of the real-time output power of a solar battery; when the timed tracking mode is run, controlling tracking according to the current time and the detected current position signal of a solar panel; and when the maximum power tracking mode is run, determining the tracking direction of a mechanical structure according to the changing condition of the output power of the solar battery. The device comprises a centralized control module, a position detecting module for detecting the actual rotating position of the solar panel, and an array detecting module for detecting the real-time output power of the solar battery. The invention has the advantages of simple and convenient operation, accurate rotating position, realization of automatic control, simple structure, high detecting accuracy and low cost.

The invention discloses a full-angle shooting pan-tilt. The full-angle shooting pan-tilt mainly resolves the problem that a full-angle shooting pan-tilt of the prior art is large in size, can be used for shooting by matching with a single lens reflex camera, and various electronic parts are used. The full-angle shooting pan-tilt is applied to an intelligent mobile phone, a general small-size digital camera, and a mobile phone with a photographing function. The full-angle shooting pan-tilt comprises a base, a rotary platform, and a bearing sleeve part, wherein the rotary platform is arranged on the base and can rotate on the base, the bearing sleeve part is arranged on the rotary platform and is used for bearing a shooting unit, and when the rotary platform rotates, the shooting unit is connected with the rotary platform. According to the structure, the full-angle shooting pan-tilt can be applied to pan-shot of 360 degrees, with 90-degree elevation, and with 90-degree depression in various sites.

The invention relates to a rotating triple-prism beam scanning device comprising a rotating double-prism system, a rotating single-prism system, a guide rail, an adjustable support, and a fixed support. The rotating single-prism system comprises a base component, a prism and frame assembly, and a worm-and-gear mechanism. The prism and frame assembly comprises a flat washer, a wedge prism, a rubber pad, a wedge retainer ring, a threaded retainer ring, and a frame. The base component comprises a base, a base baffle, and a base insert. The worm-and-gear mechanism comprises a rotary motor, a motor stand, a coupling, a worm, a bearing support, a rolling bearing, a worm gear, an encoder support, and a rotary encoder. The rotating double-prism system is formed by assembling two rotating single-prism systems together. In the invention, the three wedge prisms are driven by the worm-and-gear mechanisms to do full-circumferential rotation, transmission is stable and accurate, and the scanning precision and stability of dynamic beams can be ensured; the prisms are independent of one another in rotation control, and diversified scanning modes can be achieved; and by introducing the third prism to the double-prism system, the scanning field of beams is enlarged significantly, and the problem that a double-prism system has scanning blind areas and control singular points is solved effectively.

The invention discloses a bending and molding machine for a metal sheet. A molding mould on the upper part of a supporting mould is driven to move up and down by a pressure beam; a workpiece on the supporting mould is compacted or loosen; the side of the supporting mould is provided with a rotary beam hinged with a stander by a fixed shaft; under the drive of a driving mechanism, the rotary beam rotates around the fixed shaft and can carry an autorotatable pressure roller on the rotary beam for rotation together; and the workpiece compacted between the supporting mould and the molding mould is allowed to roll forming along the surface of the molding mould. In the process of bending and molding the metal sheet, the surface of the pressure roller has rolling operation relative to the surface of the molding mould; and the surface of the workpiece can not be damaged. Through replacing the molding mould, different bending round angles can be machined and have good universality. Moreover, a rotary angle of the rotary beam is controllable; and a bending angle can be conveniently adjusted according to requirements.

A welding machining device comprises a rack. An operation platform is arranged on the rack, a delivery groove is formed below the operation platform, and a delivery belt is arranged in the delivery groove. A feeding location unit is arranged in the rack starting point section, a movable pre-welding grinding unit is arranged in the middle section of the rack, and a welding trolley unit is arranged in the upper rear section of the operation platform. The feeding location unit comprises a supporting frame, a connection plate is connected between the supporting frame and the operation platform, and an inclined sliding plate is fixed on the lower portion between the supporting frame and the operation platform and extends into the delivery groove downwards to be disposed above the delivery belt. A gas cutting unit is arranged in the starting section of the operation platform and comprises a gas cutting trolley, a gas tube fixing block is arranged on the gas cutting trolley, gas tubes are arranged on the gas tube fixing block, and a guide nozzle is arranged at the front ends of the gas tubes. By means of the device, functions of automatic blanking, automatic slag knocking cleaning, automatic grinding, automatic welding and the like are combined, the labor intensity is reduced, the production efficiency is improved, the machining accuracy is guaranteed, and the labor potential safety hazard is reduced.

The invention relates to the technical field of a welding device, in particular to a laser composite welding joint device, which comprises a box body, a composite welding joint, a combined plate, a big gear ring, a sleeve, a small gear and an electric motor. The composite welding joint consists of a laser welding torch and an arc torch. The electric motor drives the big gear ring to rotate through the small gear and simultaneously the sleeve tightly fixed with the big gear ring concentrically rotates together. The combined plate is fixedly connected with the hollow sleeve. The laser welding torch and the arc torch are arranged on the combined plate. The laser welding torch is arranged on a central shaft of the sleeve; consequently during a rotating process, the arc torch enwinds rotates at a 360 degrees around the laser beam of the laser welding torch. The rotating speed and the rotating angle of the composite joint can be controlled through controlling the running of the electric motor to lead the composite joint to be able to adopt the welding on a curve welding line of different curvatures or curvature changes.

The invention relates to a nozzle device for building 3D printing and a control method. The device comprises a square port module and a steering module; and the steering module comprises a motor fixedframe, a steering motor, a coupling, a transmission shaft, a driving gear and a driven gear. The steering motor, the coupling, the transmission shaft and the driving gear are connected in sequence; the steering motor is mounted on the motor fixed frame; the driving gear is engaged with the driven gear; the square port module comprises a square nozzle, an inner ring, an outer ring and a sleeve; the square nozzle is mounted at the lower end of the inner ring; the outer ring is embedded at the upper end of the inner ring, and is connected with the sleeve; the motor fixed frame is fixed on the sleeve; and the driven gear is engaged in the inner ring. Compared with the prior art, the device precisely controls free steering of the square port module, can always maintain a tangential state between the angle of the square nozzle and a printing path, preferably solves the arc layering problem on the outer surface of a wall caused by printing through a circular port nozzle, and improves the overall surface quality of the wall.

The invention discloses a pull rod type overturning inspection device. The device comprises a fixed framework and a grabbing and lifting device used for clamping a product, wherein the fixed framework comprises a first fixed frame located on the top and a second fixed frame located on the bottom, a sliding rail is arranged on the first fixed frame, and the first end of the grabbing and lifting device is installed on the sliding rail in a sliding mode; a pull rod fixing rack is arranged on the top of the first fixed frame and is movably connected with the first end of a pull rod, and the second end of the pull rod is connected with the second end of the grabbing and lifting device. Compared with the prior art, the device has the advantages that a transmission mechanism can control the grabbing and lifting device to move, the pull rod can make the grabbing and lifting device rotate around the pull rod fixing rack, and a photoelectric sensor can be matched with a sensing sheet to sense the rotating angle of the grabbing and lifting device so that the rotating speed of the product can be controlled.

The invention discloses a plate shearing machine. The plate shearing machine comprises a machine frame and a sliding block which is arranged on the machine frame through a linear guide track pair, wherein a lower shear and an upper shear are fixed on the machine frame and the sliding block respectively; nuts and screw rods are arranged above the sliding block; the top parts of the screw rods are provided with bevel gear steering boxes; and the bevel gear sheering boxes are connected with one another through coupling shafts and are driven by a same servo motor. The servo motor can synchronously drive each bevel gear steering box to rotate through the coupling shafts, and the bevel gear steering boxes drive each screw rod to rotate synchronously to ensure that the whole sliding block can move up and down synchronously. The sliding block carries the upper shear to move to realize the shearing of a workpiece. Because the rotational angle of the servo motor can be accurately controlled, the rotational angle of the screw rods can be accurately controlled, and the distance for the sliding block to move up and down can be accurately controlled. By controlling the distance for the sliding block to move up and down, the shearing stroke of the plate shearing machine is controlled. Therefore, the shearing stroke of the plate shearing machine can be accurately controlled, and the middle part of a plate can be sheared.

The invention discloses a speed reducer performance testing device and method. The test equipment comprises a test system and a processing control system, wherein the test system comprises a loading table, a servo motor is fixedly mounted on one side of the loading table, the output shaft of the servo motor is connected with an input end torque sensor, the input end torque sensor is connected withan input end angle sensor, the input end angle sensor is connected with the input shaft of a RV speed reducer, the output end of the RV speed reducer is connected with an output end angle sensor, theoutput end angle sensor is connected with an output end torque sensor, the output end torque sensor is connected with a magnetic powder brake, and the processing control system comprises a data acquisition module, an industrial computer and a PLC. According to the invention, the rotation angle and the torque of a servo motor can be accurately controlled, the dynamic test precision is high, the stability is good, and the transmission precision and the return difference of the RV reducer can be comprehensively reflected in real time.

The invention relates to a powder grinding device which comprises a main body, an abrasive wheel assembly arranged in the main body, a rotary adjusting ring arranged on the abrasive wheel assembly and used for adjusting crudeness and fineness of powder ground by the abrasive wheel assembly, a power source arranged on the main body and used for promoting rotation of the rotary adjusting ring, and an angle controller arranged on the main body and used for controlling the rotation angle of the rotary adjusting ring. According to the powder grinding device, the crudeness and fineness of the ground powder are adjusted by the adoption of an electric control mode, so that the use of the powder grinding device is simple, and the level in people's heart is improved.

The invention discloses a foldable guardrail device which is arranged at the top of a tank body of a powder tanker and comprises a guardrail beam and at least one guardrail oscillating bar; one end of the guardrail oscillating bar is rotationally arranged at the top of the tank body; the other end of the guardrail oscillating bar is rotationally coupled to the guardrail beam, and the guardrail oscillating bar drives the guardrail beam to ascend or descend by rotation. The invention also discloses the powder tanker. By adopting the technical scheme, the linkage of a staircase and a guardrail can be achieved; the guardrail can ascend or descend as required; the use security of the guardrail is improved; a space is saved; the staircase can be folded, and the problem of limited mounting space of the staircase is solved.

The invention, which relates to the technical field of icing wind tunnel pressure measurement, discloses a pressure measuring device for preventing a probe from icing through a rotary rake. The pressure measuring device comprises a pressure measuring rake with a pressure measuring probe. The pressure measuring rake has a hollow paddle-shaped structure with a hollow shaft; and the hollow structureof the pressure measuring rake is communicated with the cavity of the hollow shaft. In addition, the device also incudes a driving positioning device mounted on the outer surface of an air inlet channel; and a rotating shaft of the driving positioning device is in driving connection with the hollow shaft of the pressure measuring rake. According to the invention, when an air inlet channel icing test is carried out, a pressure measuring rake is rotated by the driving positioning device to enable the pressure measuring probe to be against an incoming flow direction with the back and positioningis performed, so that the pressure measuring probe is protected from being iced and the rotating angle of the pressure measuring rake is not influenced by the air flow; when the air inlet channel pressure measurement test is carried out, the pressure measuring probe faces the incoming flow direction directly to measure the pressure and the distribution, so that multi-times mounting and dismountingof the pressure measurement rake and related parts are avoided and thus the damage to the air inlet channel caused by repeated mounting and dismounting is reduced. The working time of the related personnel in a low-temperature environment is shortened and the test efficiency is improved.

The invention relates to an adjusting device of an optical fiber polarization controller, which belongs to the technical field of optical fiber communication. The adjusting device comprises the optical fiber polarization controller, an engraving thumbwheel, a locking fixture, an external panel and a base bracket. According to the adjusting device, the engraving thumbwheel which is exposed out of the external panel is adjusted to rotate, so as to drive an optical fiber ring piece to rotate, external adjustment and quantitative continuous control of the optical fiber ring piece of the optical fiber polarization controller are realized, the repeatability and the adjusting efficiency of the optical fiber polarization controller are increased, and the locking fixture is adopted, so that the long-term working stability of the optical fiber polarization controller is improved. Additionally, the adjusting device of the optical fiber polarization controller provided by the invention has the characteristics of adjusting space saving and low cost, and the adjusting device is especially suitable for controlling the polarization state of light waves in laboratories.

The invention discloses a shaft simulation device and an oil-gas-water three-phase-flow simulation experiment system and belongs to the field of oil field machines. The shaft simulation device comprises a simulated shaft, a plate-shaped support, a rotary piece, a supporting seat, a derrick, a motor, a reducer, a first pulley, a second pulley, a steel cable and a power controller. One end of the simulated shaft is connected with the plate-shaped support through the rotary piece, the rotary piece comprises an input pipeline perpendicularly communicating with the end of the simulated shaft, and the supporting seat is fixedly arranged on the plate-shaped support and used for fixing the input pipeline. The derrick is perpendicularly connected with the right side wall of the plate-shaped support, and the motor and the reducer are connected through a coupler and arranged on the plate face of the right portion of the plate-shaped support. The first pulley is connected with a transmission shaftof the reducer. The second pulley is located over the first pulley and perpendicularly connected with the derrick through a transverse connecting rod, one end of the steel cable is fixed to the firstpulley, the steel cable sequentially winds across the first pulley and the second pulley to enable the other end of the steel cable to be connected with the simulated shaft, and the power controlleris used for controlling operation of the motor. According to the shaft simulation device, oblique wells with different slopes can be simulated, and leaking cannot occur in the rotating process.

The invention discloses a novel cervical gear, which comprises a front cervical gear and a back cervical gear, a trachea opening slot is formed in the front cervical gear, the trachea opening slot isconnected with a blowing mechanism in a clamping manner, a vent groove is formed in the back cervical gear, an adjustment and fixation component for adjusting and fixing the relative position of the front cervical gear and the back cervical gear is arranged between the front cervical gear and the rear cervical gear, a cylinder similar to the neck contour of a patient is formed between the front cervical gear and the rear cervical gear, the upper end of the front cervical gear is connected with a supporting plate for supporting a jaw of the patient, two sides of the upper end of the front cervical gear are connected with a left side plate and a right side plate respectively along the horizontal direction in a slippage manner, the left side plate and the right side plate are used for limiting the rotation of the patient's head. The blowing mechanism is arranged on the trachea opening slot, so that the trachea opening slot for observing and monitoring the neck of the patient can achieve the effect of promoting the ventilation of the patient's neck so as to prevent the patient's neck from causing pressure sores as an installation structure of the blowing mechanism.

The invention provides a padlock. The padlock comprises a locking portion and is characterized in that the locking portion comprises a cylindrical rotary column and a transmission rod fixedly connected with the rotary column, the rotary column is adjacent to the middles / middle of a long blind hole and / or a short blind hole, a motor is adjacent to the middle of the long blind hole or the short blind hole, the motor and the rotary column are located on two sides of the long blind hole and the short blind hole respectively, unlocking recesses are formed in the positions, corresponding to a long lock rod and / or short lock rod, of the rotary column, matching recesses are formed in one sides, facing the rotary column, of the long lock rod and / or the short lock rod, a shifting portion is fixed at the output end of the motor and used for shifting the transmission rod to allow the rotary column to rotate, and a torsional spring for keeping protruding portions, opposite to the unlocking recesses, of the rotary column being accommodated in the matching recesses is arranged between the rotary column and a lock body. When the protruding portions are accommodated in the matching recesses, the locking portion locks a lock beam; when the unlocking recesses face the matching recesses, the locking portion unlocks the lock beam, and the transmission rod is tangential to the rotation trajectory of the edge of the shifting portion when the unlocking recesses face the matching recesses.

The invention belongs to application of positioning equipment in subway tunnel construction, and particularly relates to a shield tunnel overhead line system anchor bolt hole positioning device and application thereof. The positioning device comprises a triangular bracket and a laser ranging sensor; the top of the triangular bracket and the lower surface of the base plate adopt a movable ball matching mechanism with a locking device; rotating plates are arranged over a base plate at intervals and assembled with the base plate through shafts in a rotating mode. A first motor on a base plate drives a shaft to rotate through a gear pair, an encoder and a gear pair are assembled in a meshed mode, a second motor is fixed to a rotating plate, a swing rod is fixed to an output shaft of the secondmotor, the laser ranging sensor and a second inclination angle sensor are assembled on the swing rod, and a first inclination angle sensor is arranged on the rotating plate; a control device receivessignals sent by the first inclination angle sensor, the second inclination angle sensor, the encoder and the laser ranging sensor and processes and controls starting, stopping and rotating angles ofthe first motor and the second motor. The method effectively solves a problem that a conventional positioning method is tedious and complex, is accurate in positioning, is simple in device, and is convenient for measurement.

The invention discloses a double-sliding-plug-door system which comprises a sliding-plug rail, mechanism mounting frames arranged at the two ends, a bearing support, a driving mechanism fixed to the bearing support, bilaterally-symmetrical locking slide ways and a locking mechanism. The driving mechanism comprises a screw rod driven by a motor and transmission assemblies arranged in a bilateral symmetry mode, and the screw rod drives the transmission assemblies to reciprocate in the axial direction of the screw rod. Each transmission assembly comprises a transmission frame, a nut assembly arranged on the corresponding screw rod in a sleeving mode and a locking roller fixed to the nut assembly, wherein the nut assembly is mounted in the transmission frame which is connected with a controlled object. The locking mechanism comprises baffle assemblies and reset torsional springs, wherein the baffle assemblies are rotatably connected with the corresponding bearing support and arranged in abilateral symmetry mode, one ends of the reset torsional springs are fixed, the other ends of the reset torsional springs are fixedly connected with the baffle assemblies, the reset torsional springsare used for limiting rotation of the baffle assemblies, and locking spaces where the locking rollers can fall into are formed by the baffle assemblies and the side faces of the corresponding lockingslide ways. According to the double-sliding-plug-door system, the safety risk problem of existing door systems is solved.

The invention discloses a test tube uncapping machine and an uncapping method thereof. The test tube uncapping machine comprises a rotary disc device, a clamping device, a lifting device and an uncapping device; the rotary disc device comprises a rotary disc and a plurality of test tube seats, and the test tube seats are arranged on the rotary disc; the clamping device comprises an elastic block and a lead screw module, and the elastic block is fixed to a movable assembly of the lead screw module; the uncapping device comprises a clamping mechanism and a rotating mechanism, wherein the clamping mechanism is arranged on the rotating mechanism, and the rotating mechanism is used for driving the clamping mechanism to rotate; and the axis of the rotary disc is parallel to the length directionof the test tube, the elastic block is used for fixing the test tube to the test tube seat, the clamping mechanism is located at the end, provided with the end cap, of each test tube, the clamping mechanism is used for clamping the end cap of the test tube, and the uncapping device is arranged on the lifting device.

The invention provides a rotating shaft and electronic equipment. The rotating shaft comprises a first rotating surface and a second rotating surface, the first rotating surface and the second rotating surface have a common side, the rotating axis of the first rotating surface and the rotating axis of the second rotating surface are on the same side but are not superposed, the first rotating surface is provided with a first stop portion, and the second rotating surface is provided with a second stop portion; the rotating shaft further comprises a supporting surface, the supporting surface is disposed on the same side as the rotating axes of the two rotating surfaces, the supporting surface is concave toward the two rotating surfaces, and the two sides of the supporting surface are respectively provided with a third stop portion and a fourth stop portion. The two rotating surfaces and the supporting surface are respectively provided with stop portions, and rotating components can be positioned by the respective corresponding stop portions when rotating through the rotating shaft, so that the rotating angles of the rotating components can be well controlled.

The invention discloses an automatic lifting device. The automatic lifting device comprises a connecting top base, a connecting mechanism, a steering adjustment mechanism and a lifting mechanism; theconnecting top base comprises a top plate and an extension rod; the top plate is connected with the steering adjustment mechanism through the extension rod; a first lifting ring is mounted on the topplate; the steering adjustment mechanism comprises a mounting plate and a rotary adjusting plate; a second lifting ring is arranged on the mounting plate; a motor, an electric extension rod and a slide block are mounted on the mounting plate; the motor is connected with the slide block through the electric extension rod; a circular rail is formed in the rotary adjusting plate; a clamping block ismounted in the circular rail; a rotating plate is fixed on the clamping block, and is provided with a mounting groove; the connecting mechanism is connected with lifting rings for connecting the top base with the steering adjustment mechanism; and the lifting mechanism comprises a support device and a hanging hook device. Through mechanism design of the lifting device, lifting of electric appliances in different placing positions can be realized; and the automatic lifting device has the characteristics of high working efficiency, high safety, convenience to operate and high stability, and greatly reduces both manpower and material resources.

The invention relates to a waist twisting device having a protecting function. The device comprises a hand rack, wherein a waist twisting mechanism is arranged on the periphery of the hand rack; the waist twisting mechanism comprises a vertical drum which is vertically buried in the ground; a horizontal bearing is arranged in the vertical drum; a round rod is inserted on an inner ring of the bearing; a rotary disc is arranged at the free end of the round rod; a round ring, which is coaxial with the rotary disc, is arranged on the periphery of the rotary disc; a plurality of opening limiting grooves are formed in the upper end face of the round ring at intervals; the widths of the various opening limiting grooves are sequentially increased; a compression spring is additionally arranged on the side face of the vertical drum; one end of the compression spring abuts against a convex shoulder at the lower side of the vertical drum and the other end abuts against the round ring; a horizontallimiting pillar, which protrudes outwards, is arranged on the outer circumference of the rotary disc; and the horizontal limiting pillar is arranged in any one of the opening limiting grooves. Basedupon cooperation between the horizontal limiting pillar and the opening limiting grooves, motions of the horizontal limiting pillar can be limited by the opening limiting grooves, so that a rotating angle of the rotary disc is subsequently limited; and by forming the opening limiting grooves which are different in width in the round ring at intervals, the rotating angle of the rotary disc is regulated and controlled.

The invention discloses a welding tool fixture for an electrolytic bath cathode steel rod and an explosion block. The welding tool fixture comprises a fixed frame 5, a rotary hanging hook 6, a welding steel piece box 8, a lifting handle cover 10, an extension rod 3, a first spanner 2 and a second spanner 11; the fixed frame 5 consists of a door-shaped front frame 15, a side plate 17 and a cross beam 16; the rotary hanging hook 6 is fixed up and down through penetrating through one end of the cross beam 16 and a base 19 on the side plate 17; the welding steel piece box 8 is hung on the cross beam 16 through a cylinder pin 9; the first spanner 2 and the door-shaped front frame 15 can enable the explosion block 14 to fix with the fixed frame 5; and the second spanner 11 and the rotary hanging hook 6 can enable the cathode steel rod 7 to fix with the fixed frame 5. The welding tool fixture is convenient for installation, easy to dismount, simple in whole structure and easy to operate, improves the labor intensity and the working environment, is easier to realize automatic welding through matching with a welding machine, and improves the welding efficiency.

The invention relates to an electric spray engine speed change working condition calibration and execution system, used for quantitative calibration of non-loaded / loaded transition and accelerating and decelerating modes of electric spray engine. The system comprises a throttle body, a computer, a motion control card and an actuating mechanism; wherein the throttle body changes the aperture of a throttle, so as to change the working condition of the engine; the computer acquires corresponding working condition signals of the throttle body and an electric control unit and records the aperture of the throttle and engine parameters at corresponding time; the actuating mechanism is connected with the throttle body, the motion control card issues a control instruction, and the actuating mechanism drives the throttle body to change working condition according to the instruction of the motion control card, thus accurately and flexibly controlling turning angle and angular velocity of the throttle and ensuring consistency of every operation, so that calibration result of engine is more consistent with the actual condition of the engine.

The present invention discloses a capacitor leg cutting machine with pin detection. The capacitor leg cutting machine comprises a first clamping walking device, a leg cutting machine, a PLC controller and a screening device. The first clamping walking device comprises an upper walking belt and a lower walking belt just under the upper walking belt, and both the upper walking belt and a lower walking belt are conveyor belts. Two belts in parallel space arrangement sleeve the transmission wheels of the lower walking belt, and a through slot is formed between the two belts. The leg cutting machine is under the upper belt surface of the lower walking belt. The walking device and the control end of the leg cutting machine are connected to the PLC controller. The upper walking belt is provided with a displacement sensor whose signal output end is connected to the upper walking belt. The capacitor leg cutting machine has the advantages that the screening device is arranged, defective capacitors are removed, and the tedious operation of checking by the staff is avoided.

The invention relates to a C type arm of a C-arm X-ray machine. The C-arm X-ray machine comprises a main frame and the C type arm which are connected with each other through a shaft, wherein the C type arm can make rotary motion relative to the main frame through the shaft, the C type arm comprises an arm body, a drive device, a digital display device, a single chip microcomputer, a synchronous pulley and a rotary encoder, the drive device comprises a stepping motor for providing electricity and a meshing gear for transmitting power, the single chip microcomputer is connected with the digital display device, the stepping motor and the rotary encoder respectively, the stepping motor, the synchronous pulley and the arm body are connected in sequence, the rotary encoder is arranged on the arm body, and the rotary encoder and the arm body are in gear drive. The C type arm has the beneficial effects that the rotation angle of the C type arm can be accurately controlled, the noise is small, the structure is simple, the use is convenient, and the performance is stable.