476results about How to "Achieve relaxation" patented technology

An apparatus and a method for treatment of benign prostatic hyperplasia are disclosed. The apparatus includes an applicator piece carrying a set of electrodes shaped and positioned to create a substantial electric field in the volume of hyperplasia and a pulse generator adapted for delivery of electrical pulses above the upper electroporation limit for the neoplastic cells. The amplitude, duration and number of the electrical pulses are generally selected to cause necrosis of a significant fraction of the volume of benign prostatic hyperplasia. The apparatus may include a high frequency system for heating the prostatic tissue and a cooling system for cooling the urethra. The combined action of heating and cooling may increase the temperature of the prostate cells to 45° C. to 55° C., while keeping the urinary tract at a temperature 15° C. to 20° C. This temperature distribution can increase the selectivity of the treatment by increasing susceptibility of the neoplastic cells to the electroporation treatment and decreasing it for the normal urethral tissues.

The invention discloses a subminiature minimal invasion high-temperature creep fatigue testing machine and the application thereof. The subminiature minimal invasion high-temperature creep fatigue testing machine mainly includes a driving system, a loading device, a constant temperature atmosphere furnace, a temperature control system, a high temperature gas protection system, a measurement control system and a water cooling system, wherein the loading manner of the machine is top vertical loading; a testing sample is positioned between an upper fixing platform and a lower fixing platform; and when loading is performed, a servo motor controls a lower loading rod to move upwards, a jumper bar is contacted with an upper loading rod, the lower end of the jumper bar is used for testing sample stamping through a pressure head. Aiming at an existing structure and a domain structure at a high temperature, the testing machine provided by the invention can be used for obtaining various high temperature performance of the material and estimating residual service life creep, safety operation state and the like of the high temperature structure, is convenient to operate, is uniform in testing temperature and high in testing precision, can be used for testing various high temperature performances such as high-temperature creep performance, high-temperature relaxation performance, high-temperature creep fatigue performance and high-temperature breaking toughness of the material.

The invention relates to a piezoelectric actuator, in particular to an inner driving type passive clamping piezoelectric actuator. The problems that according to an existing inner driving type clamping piezoelectric actuator, self locking cannot be achieved during outage, a driver is slow in running speed, and requirements for machining accuracy of a clamping body and a guiding track are high are solved. The inner driving type passive clamping piezoelectric actuator comprises a guiding track, driving bodies, a driving piezoelectric stack, two clamping piezoelectric stacks and two clamping bodies. Each clamping body comprises a piezoelectric stack pre-tightening piece, two clamping triangle amplified flexible hinges, two clamping piezoelectric stack supporting bodies and two clamping heads. Each driving body comprises two driving triangle amplified flexible hinges, two driving piezoelectric stack supporting bodies and two driving piezoelectric stack pre-tightening pieces. The driving bodies connected with the clamping bodies are arranged between the two clamping bodies. The driving bodies and the clamping bodies are placed in grooves of two arms of the guiding track. The piezoelectric actuator is used in a micro-driving process.

The invention relates to a wearable device and a strap adjusting and locking mechanism thereof. The strap adjusting and locking mechanism comprises an adjusting buckle, an adjusting knob and two straps, and the adjusting buckle has an adjusting chute. At least one of the two straps is slidingly arranged in the adjusting chute, and the remaining strap is connected to the adjusting buckle in a matched way. The strap slidingly arranged in the adjusting chute is provided with a rack. The adjusting knob is rotatingly arranged to the adjusting buckle and includes a relatively rotatable button cap and a ratchet, one side of the ratchet away from the button cap is provided with a gear, the gear engages with the rack , and the two straps rotate in the same or opposite direction with the rotation ofthe gear. A limiting device for unidirectionally locking the ratchet is arranged between the ratchet and the adjusting buckle. The above strap adjusting and locking mechanism is mainly formed by three components, the structure is simple, the reduction of the failure rate is facilitated, the reliability is high, the repair is easy, the straps can be tightened or released by rotating the adjustingknob forward or reversely, the operation is convenient and quick, and the improvement of a user experience is helped.

The invention discloses an interventional surgical robot subordinate end device and a control method thereof and belongs to the technical field of minimally invasive blood vessel interventional operations. The device comprises a main body, a catheter clamp holder, a guide wire clamp holder, a torsional component and a force measurement component; the catheter clamp holder is used for clamping catheters, the guide wire clamp holder is used for tightly clamping or loosening guide wires, and the catheter clamp holder and the guide wire clamp holder are both detachably mounted on the main body; the catheter clamp holder comprises a medical three-way valve and a clamping component, and the medical three-way valve is used for connecting the catheters and is fixed to the main body through the clamping component; the torsional component is used for driving a screw cap of the medical three-way valve to drive the catheters to rotate; the force measurement component is used for detecting push force of the catheters. The subordinate end device can clamp the catheters and tightly clamp or loosen the guide wires, achieves co-operating operation of the catheters and the guide wires, and is simple in structure and convenient to disassemble and assemble. According to the control method, the subordinate end device is controlled so that clamping, pushing, torsion and force measurement of the catheters and clamping of the guide wires can be completed, and accordingly co-operating of the catheters and the guide wires is achieved.

The invention discloses a hydraulic fixture used for machining a precision forging blade tenon root. The fixture consists of a fixture box cover part in contact with a blade back and a fixture box body part in contact with a blade basin; by transferring pressure of liquid in a hydraulic cavity of the fixture to other parts, a blade is clamped, so that the clamping force applied on the blade is more uniform and stable; when the hydraulic fixture is used for clamping, the blade can be clamped and loosened only by screwing a pressing regulation rod in and out, the operation control is convenient, and the damage to the blade is reduced. According to the hydraulic fixture used for machining the precision forging blade tenon root, the machining efficiency of the blade of an aviation engine can be improved, the machining precision of the blade of the aviation engine is also improved, and the clamping problem brought about when the precision forging blade tenon root is machined is solved; the fixture is simple in structure, convenient to install and high in positioning precision; the positioning precision is not affected even when the hydraulic fixture is dismounted for a plurality of times; and the hydraulic fixture is also applicable to the machining and application of the other types of blades.

The invention provides a working method of a long-strip-shaped material equidistant cutting device with a ratchet wheel auxiliary feeding function. The long-strip-shaped material equidistant cutting device comprises a processing machine shell, the top of the processing machine shell is open, a feeding and discharging through hole is formed in the left side wall of the processing machine shell, a feeding supporting plate is fixedly connected to the interior of the feeding and discharging through hole, the left end of the feeding supporting plate extends to the outer side of the processing machine shell, and the right end of the feeding supporting plate is fixedly connected with the right side wall of the interior of the processing machine shell; a first moving groove with an upward openingis formed in the feeding supporting plate, a first rack is arranged in the first moving groove, and the upper side of the first rack meshes with a first gear; and a first support frame is fixedly connected to the left side wall of the processing machine shell, and a first rotation shaft is rotatably connected to the first support frame. The working method has the following beneficial effects thatwhen a moving block moves upwards, a connecting plate can drive two second rotating rods to move upwards, a sharp tooth on the left side has no acting force on a ratchet wheel, and a hook body can hook the ratchet wheel to enable the ratchet wheel to rotate anticlockwise.

The invention provides a circuit board feeding and clamping system and a full-automatic circuit board clamping system. A lower clamp device, a first motion device, a second motion device, a third motion device, a telescopic device, a mechanical arm and control devices such as a photoelectric sensor and a controller are integrated into a system, so that the automated operation of a circuit board in a clamping process is realized and the production efficiency is very high.

The invention discloses a robot end clamping module driven by a steering engine. The end clamping module comprises the drive steering engine capable of outputting power outwards. The power output end of the drive steering engine is connected with a steering engine output disc. The other end of the steering engine output disc is connected with one end of a worm arranged in an upper base and drives the worm to rotate forwards or backwards. A pair of drive clamping arms is further hinged into the upper base in a bilateral symmetry mode. The worm is in engaged transmission connection with the drive clamping arms, so that the drive clamping arms swing around the hinge center of the upper base. The clamping ends of the drive clamping arms can be reunited or separated. Compared with the prior art, the robot end clamping module driven by the steering engine has the advantages of being simple in structure, small in size, compact, flexible to operate and the like; control under conditions of various torque, speeds and positions can be achieved by controlling the steering engine motion mode; and a lower base is of a replaceable structure, and can cooperate with ends of different robots for operation quite conveniently, so that a work procedure needing to prevent workpieces from being damaged during clamping is efficiently completed.

The invention discloses a sterilizing tray for an interventional operation robot propelling device. The sterilizing tray comprises a sterilizing tray body, a guide wire moving device and a catheter moving device, wherein a guide wire groove and a catheter groove which are communicated are defined in the sterilizing tray body; a guide wire is arranged in the guide wire groove, and a catheter is arranged in the catheter groove. The sterilizing tray is used for controlling the movement of the catheter and guide wire in an interventional operation, a doctor controls the device through an interventional operation robot outside an operation room and can control an electromagnet of the robot to control the catheter and guide wire in the sterilizing tray body to enter the body of a patient, and the aim of interventional operation treatment is thus achieved. The sterilizing tray is disposable and is aseptically processed, and the aseptic environment of an operation is ensured. The sterilizing tray has the advantages of being simple in structure, small in size, low in weight, convenient to assemble and disassemble, low in cost and the like.

The invention discloses an audio-video playing device and method. The device comprises: a memory unit for storing multiple audio data; an image extraction unit for extracting an external image; a processing unit for obtaining an expression state of a user through the external image, deciding a playing mode according to the expression state and obtains corresponding audio data and an image data according to the playing mode; a loudspeaker unit for outputting the corresponding audio data according to the playing mode; and a display unit for displaying the corresponding image data according to the playing mode. By using the method and device provided by the invention, proper music or related images can be provided according to the different use states and moods of a user so as to achieve an effect of relaxing the body and the mind, and related function feedbacks can also be provided through cooperation with the habits of the user.

The invention relates to a clam device used for wafer cleaning in a semiconductor industry and specifically relates to a device for clamping the edge of a wafer during an automatic wafer cleaning process and a clamping method of device. A wafer bearing table in the device is in sealed connection with the output terminal of a hollow shaft motor. A plurality of gasket posts support the edge of the wafer are distributed on the upper surface of the wafer bearing table in the circumferential direction. A plurality of single-action spring reset cylinder are distributed on the lower surface of the wafer bearing table in the circumferential direction. The output terminal of each single-action spring reset cylinder is connected with a clamp block clamping the edge of the wafer. The wafer bearing table is provided with a flow port used for providing working medium for the single-action spring reset cylinders. When the working medium is not in connection, a piston rod of each single-action spring reset cylinder is in a contraction state, so that the edge of the wafer is clamped tightly. When the working medium is in connection, the piston rod of each single-action spring reset cylinder extends out and the edge of the wafer is released. The device is only in contact with the edge of the wafer and no damage may be caused to the wafer during a technique implementation process.

The invention discloses a fun cervical vertebra healthcare system and an implementing method thereof, and especially, relates to a fun cervical vertebra healthcare system based on a micro sensor and a computer platform, belonging to the field of fun cervical vertebra healthcare. The system is integrated on a specially made hat to comprehensively detect the movement condition of neck in real-time by using an acceleration sensor and a micro gyroscope, completes the judgment via a microcontroller and sends the result to an interactive platform. The interactive platform reasonably sets a scientific movement method for neck based on relevant healthcare information, accomplishes feedback according to the detected real movement condition of neck of a user, and gives a prompt regarding the result in the form of sound and pictures so that the user can rectify the incorrect neck movement method. The entire system only requires a real external object, i.e. the sensing hat, is suitable for being used in office, home and other places, and has the advantages of being low in cost, high in degree of intelligence and strongly scientific and entertaining.

The invention discloses an optical cable automatic stripping and sampling device.The device is characterized in that four clamping motors drive four clamping part to achieve vertical transmission so as to clamp and loosen an optical cable, a cutting mechanism is used to fix the optical cable between grooved positioning wheels on two sides of cutters after the optical cable is clamped, 6 V-shaped pressing pieces which are vertically staggered are pressed on the optical cable, the two cutters directly facing the pressing pieces are pressed into the optical cable, and a power device for driving the cutting mechanism to move transversely is started so as to fast cut and sample the optical cable.The optical cable automatic stripping and sampling device has the advantages that manual work is replaced by the machine, work efficiency and work quality are increased greatly, manual labor is reduced, test accuracy is increased, and workers are prevented from being hurt by sampling; a key effect on the detecting efficiency is achieved, and sampling difficulty is lowered.

The invention discloses an interventional operation robot reciprocating device. The interventional operation robot reciprocating device comprises a base plate, a wire clamping assembly, a first driving assembly and a second driving assembly, wherein the first driving assembly is used for driving the wire clamping assembly to do transverse reciprocating motion; the second driving assembly is used for driving the wire clamping assembly to do longitudinal reciprocating motion; the wire clamping assembly, the first driving assembly and the second driving assembly are installed on the base plate; while the second driving assembly drives the wire clamping assembly to longitudinally move to clamp a catheter guide wire, the first driving assembly drives the wire clamping assembly to transversely move. The structure is simple and compact, convenient to install and more flexible to use; the catheter guide wire is easily replaced in an operation, and the operation precision is high; by operating the device, clamping, releasing, propelling and withdrawing of the guide wire can be achieved, the device can be continuously operated, is easy and convenient to use, and can meet various requirements of a vascular interventional operation for the guide wire.

The invention relates to a self-locking satellite electric box. The self-locking satellite electric box comprises a box body and a box cover arranged at an opening in the top of the box body in a covered manner, wherein a box cover locking mechanism is arranged in the box body; the box cover locking mechanism comprises a fixed support arranged inside the box body; a linear stepper motor is arranged on the fixed support; a moving block is arranged on a driving shaft of the linear stepper motor; a plurality of connecting rods A are connected onto the moving block through rotation; the moving block is connected with inserting blocks through the connecting rods A; sliding grooves of the inserting blocks are formed in the box body; inserting grooves are formed in the box cover at the positions corresponding to the sliding grooves; the inserting blocks slide along with the sliding grooves under the pushing of the connecting rods A, and thus are inserted into or pulled out of the inserting grooves; the built-in stepper motor is good in waterproof effect and dustproof effect; normal operation of an internal locking mechanism is unlikely to be influenced by external environment; moreover, the mechanism is also unlikely to be opened through related unlocking tools from outside, and the safety degree is high.

The invention relates to a robot gripper structure, which comprises a circular arc finger pair, a copper column, a front baffle plate, an upper end cover, a lower end cover and a tiller double connecting rod mechanism. The tiller double connecting rod mechanism is provided with a round tiller and two connecting rods; the two connecting rods are respectively coupled to symmetrical positions on the tiller, which are certain distances away from a circle center and take the circle center as a center; fingers which are vertical to a plane where the tiller is positioned and face the same direction are arranged at handle ends of the two connecting rods respectively so as to form the finger pair for clamping a workpiece; and the center of a disk is provided with a groove gear structure which can be coupled with a corresponding projecting gear on a driving structure and drives the disk through the gear structure so as to drive the fingers on the handles at the two ends of the connecting rods to move. The robot gripper has the advantages of simple structure, low cost, and suitability for mass production.

The invention discloses a method and device for activating lipid and blood glucose reduction through gastrocnemius passive movement. The device is provided with a bottom plate, a leg fixing frame is fixed to the rear end of the bottom plate, leg fixing bands and an ankle joint fixing band are arranged on the leg fixing frame, pedals are hinged to connecting positions of the bottom plate and legs, one or more pedals are arranged, and a driving device for driving the pedals to ascend or descend is arranged between each pedal and the bottom plate and comprises an air bag located between each pedal and the bottom plate, the upper and lower surfaces of the air bags are connected with the pedals and the bottom plate respectively, the air bags are connected with gas pipes, and the gas pipes are connected with a pressure-adjustment automatic charging and discharging gas pump. Compared with the prior art, the device is simple in structure and convenient to use, contracting and loosening of the gastrocnemius can be achieved, the effect of the gastrocnemius pump can be achieved, backflow of lower limb blood can be promoted, deep venous thrombosis can be effectively prevented, and circulation of lower limb blood can be improved.

The invention discloses a steel rope winding device convenient to disassemble and assemble, and belongs to the technical field of wire rod machining equipment. The steel rope winding device comprises a base, a sliding frame, a rotating frame, an arc-shaped plate and a fixed cylinder, the fixed cylinder is installed on the rotating frame, the rotating frame is rotatably installed on the sliding frame, and a movable baffle is installed at one end of the fixed cylinder; and the arc-shaped plate slides in the radial direction of the fixed cylinder, a diameter control assembly for controlling the arc-shaped plate to slide is installed in the fixed cylinder, the diameter control assembly controls a steel rope fixing assembly at the same time, and a movable plate fixing assembly used for fixing the movable baffle is arranged at the inner side of the arc-shaped plate. Before a steel rope is wound, the steel rope is firstly placed in a rope inlet, the diameter is increased, and meanwhile, the steel rope and the movable baffle are fixed. According to the steel rope winding device , the structure is ingenious, full-automatic rope winding and rope roll disassembling are achieved, and manual operation is not needed.

The invention relates to a polishing device for false tooth machining. The polishing device comprises a base, an installation seat which is placed on the base and is used for fixing a false tooth in the polishing process, a support fixed to the base and a grinding tool which is installed at the end, away from the base, of the support and is used for grinding the false tooth. The polishing device is characterized in that a magnetic worktable is arranged on the upper end face of the base; multiple concentric ring-shaped grooves are formed in the lower end face of the installation seat; magnets are arranged in the ring-shaped grooves; and a clamping mechanism used for clamping and fixing the false tooth is arranged on the installation seat. The polishing device has the effects that the relative position between the installation seat and the base is conveniently adjusted, and therefore the grinding process is more convenient.

The invention discloses an electric locking and rotating joint for an auxiliary arm for surgical operation, which is characterized in that the electric locking and rotating joint comprises a joint rotating mechanism and a joint locking mechanism, the joint rotating mechanism is positioned at the upper part of the joint locking mechanism, wherein the joint rotating mechanism comprises a joint rotary shaft, a joint bearing cap, a joint bearing seat and a joint chassis, the joint locking mechanism comprises a locking outer sleeve, a friction ring, a trapezoidal nut, a lead screw shaft and a motor, an output shaft of the motor drives the lead screw shaft to move, the lead screw shaft drives the trapezoidal nut which is in threaded connection with the lead screw shaft to move, and the trapezoidal nut is circumferentially fixed by the locking outer sleeve arranged on the outside of the trapezoidal nut and can only move up and down, thereby driving the friction ring arranged at the upper part to move up and down; and friction force is produced when the friction ring is in contact with the joint chassis, the friction force is eliminated when the friction ring and the joint chassis are separated, and the joint rotary shaft is in threaded connection with the joint chassis, thereby realizing locking or unlocking of the joint rotary shaft. The electric locking and rotating joint has the advantages of compact structure, convenient operation and maintenance, reliable locking and unlocking and excellent performances.

The invention discloses a rollover table for a rollover disk insulator. The rollover table comprises a frame, a lifting mechanism and a clamping mechanism, wherein the lifting mechanism is connected with the frame and the clamping mechanism; the frame comprises rollers and a limiting block; the lifting mechanism comprises a lower retaining plate, an upper retaining plate, a first cylinder, a second cylinder, a bracket, a lifting plate, a linear bearing, guide columns, pull rods, a supporting shaft, a chain wheel and a chain; the clamping mechanism comprises a holding frame, a supporting frame, a rotating shaft, a left moving plate, a right moving plate, a linear guide rail, a retaining plate, a cylinder and a connecting rod mechanism. The rollover table is one which is suitable for the disk insulator produced by an assembly line; the speed and the positioning accuracy are greatly improved compared with manual pick and place of the insulator.

The invention discloses a tool clamping device and tool clamping equipment. The tool clamping device comprises a clamping seat provided with a clamping opening and a power output mechanism continuously outputting stable powder. The output end of the power output mechanism is connected with a driving connector. The power output mechanism drives the driving connector to move up and down. The clamping seat is rotatably connected with clamping rods through rotating shafts. The heights of the positions where the clamping rods are located are larger than the height of the position where the driving connector is located. Connecting rods are arranged between the clamping rods and the driving connector. The two ends of the connecting rods are rotatably connected to the driving connector and the clamping rods through pin shafts correspondingly. The rotating shafts and the pin shafts are arranged parallelly. The ends, far from the connecting rods, of the clamping rods and the inner wall of the clamping opening form a clamping space. The clamping rods in a moving state adjust the positions to clamp a workpiece; and meanwhile by utilizing a dead point position of a transmission mechanism composed of the driving connector, the connecting rods and the clamping rods, the stability and reliability of workpiece clamping are improved.

The invention discloses a height-adjustable all-in-one machine display. An adjusting rod and a loop bar are respectively rotationally connected to the upper part and the lower part of the rear part ofa display screen, the middle part of the adjusting rod is rotationally connected with the upper end of an upright post, the loop bar is sleeved with a fixing sleeve, and the rear end of the fixing sleeve is rotationally connected with the middle part of the upright post; the rear end of the adjusting rod is rotatably connected with the upper end of a connecting rod, and the lower end of the connecting rod is connected with a lifting mechanism; the lower end of the upright post is fixedly connected with a bottom plate, the upper part of the front part of the bottom plate is fixedly connected with a cable tightening box, two grooves are respectively formed in the upper edges of two sides of the cable tightening box, the upper part of the cable tightening box is hinged with a cover plate, and a handle is fixedly connected to the upper part of the cover plate; two cable rollers are arranged in the cable tightening box, the cable rollers are fixedly connected with rotating shafts, the rotating shafts are rotatably connected with the cable tightening box, and one sides of the rotating shafts penetrate through the cable tightening box and are fixedly connected with cable tightening wheels. The display drives the connecting rod to drive the adjusting rod to swing through the lifting mechanism so as to drive the height of the display screen to be adjusted, and simultaneously the rod can extend and contract in the fixing sleeve to adjust the inclination angle of the display screen.

The invention relates to an E-shaped inductance automatic processing device, comprising a frame; An adjusting mechanism fixedly arranged on the rack; A clamping mechanism comprising a turnover assembly fixedly arranged on the turnover assembly and provided with four groups of feeding assemblies in a circumferential array, a first positioning assembly fixedly arranged at the bottom of the feeding assembly and positioned at the front end of the feeding assembly, and a second positioning assembly fixedly arranged at the rear end of the feeding assembly; A smoothing mechanism fixedly arranged on the tightening assembly and cooperated with the second positioning assembly to drive; And a coil conveying mechanism, wherein the coil conveying mechanism comprises a wire pressing machine arranged atthe output end of the smoothing mechanism, an uplink assembly arranged at one side of the wire pressing machine and perpendicular to the output end of the smoothing mechanism, and a discharge assemblyarranged at the output end of the transmission assembly; The invention solves the technical problems that the wires are uneven in bending and different in shape when the wires are connected, and thewires still need to be manually straightened after the wires are connected.

The invention relates to a coal mine camera protection system with automatic lens replacing, cleaning, dust removing and dust falling functions and application thereof, and belongs to the technical field of mining equipment, which comprises a lens cleaning device, a lens drying device, an internal pressurizing device, an external lens cover, a lens bracket, a shell and a controller. When the lens is replaced, the underground use safety performance of the system is improved through the external lens cover and the internal pressurizing device, the camera window can be cleaned instead of manual work after the system is applied to the site, the labor intensity is reduced, the life safety of personnel is guaranteed, and the system is externally provided with a device capable of sprinkling water to reduce dust and is started when the external dust concentration is too high. The dust concentration around the camera system is rapidly reduced, and the lens cleaning frequency can be reduced. Unmanned cleaning of the camera window is achieved, meanwhile, cleaning and drying work is carried out in the shell, cleaning and drying equipment is isolated from flammable and explosive gas, and explosion-proof design of system equipment is better facilitated.

The invention relates to a rapid clamping device. A pressing flange and a top plate are arranged on the two sides of a support respectively, one end of an ejector rod is rotationally connected with the top plate, the other end of the ejector rod is in threaded connection with a center pressing piece, a sliding ring copper sleeve sleeves the center pressing piece, a synchronous sliding ring which moves oppositely sleeves outside the sliding ring copper sleeve, a copper sleeve flange is arranged at the outer end of the sliding ring copper sleeve, a spring which sleeves the sliding ring copper sleeve is arranged between the synchronous sliding ring and the copper sleeve flange, and the two ends of the spring are respectively abutted against the synchronous sliding ring and the copper sleeve flange; the number of pull rods is multiple, the pull rods are uniformly distributed in the circumferential direction of clamping parts, one end of each pulling rod is hinged to the center pressing piece, the other end of each pulling rod is a pressing end, and the clamped parts are located between the compression flange and the compression ends of the pull rods; and connecting rods are connectedbetween each pull rod and the synchronous sliding ring, and the two ends of the connecting rod are respectively hinged to the pull rods and the synchronous sliding ring. The device has the advantagesof being novel in structure, simple and convenient to operate, small in size and the like.

The invention provides a positioning and clamping device for cylindrical parts. The positioning and clamping device comprises a tray, a positioning bent plate and a top block, wherein a plurality of slideways are uniformly distributed on the tray in the circumferential direction, and the slideways have inverted T-shaped cross sections and extend from the edge of the tray to the middle of the tray.The positioning bent plate comprises a positioning plate and a mounting plate, wherein the positioning plate is fixed on the slideways of the tray through bolts, and the mounting plate is verticallyfixed on the upper portion of the positioning plate. The top block is arranged on the side, close to the middle of the tray, of the mounting plate. According to the positioning and clamping device forthe cylindrical parts, the positioning bent plate is installed on the slideways through the bolts, the positioning bent plate can slide along the slideways by unscrewing the bolts so that the parts can be clamped and loosened, and the positioning and clamping device is simple and reasonable in structure, low in manufacturing cost, suitable for clamping the cylindrical parts of different sizes within a certain range, high in universality, capable of realizing alignment and adjustment of the position of the parts by moving the positioning bent plate, easy to operate, and high in clamping precision.