57results about How to "Stay clamped" patented technology

The invention discloses an accurate positioning industrial mechanical claw which comprises a front end mechanical arm and a hydraulic push rod. A mechanical claw base is fixedly arranged at the upper end of the front end mechanical arm, a mechanical claw body is movably connected to the side face of the upper end of the mechanical claw base through a mechanical claw rotating shaft and is provided with a driving rod device, and the driving rod device is movably installed on the side face of a driving disc; and in addition, a spring is wound around the hydraulic push rod. By means of the structure, the hydraulic push rod is driven by a controller, the driving disc vertically moves accordingly, and therefore the driving rod device moves in a driving groove of the mechanical claw body, and the mechanical claw body is opened and closed to conduct clamping transportation on cargoes; a pressure sensor can display the value of pressure across the cargoes and the mechanical claw body and displays the value on a pressure displayer, when the pressure reaches a certain value, the mechanical claw body can be ascended, and accurate positioning of the mechanical claw body is achieved; and when the hydraulic push rod breaks down and losses power, the spring extrudes the driving disc under the self high intensity, and the mechanical claw body keeps the clamping state.

The invention discloses a high-efficiency packaging machine and a packaging method for a rotating bearing and belongs to the technical field of rotating bearing packaging. The packaging machine for the rotating bearing comprises a machine base, a centering rotating device and a winding device; the centering rotating device and the winding device are both installed on the machine base; the centering rotating device comprises a centering driving mechanism, supporting bases and rotating driving wheels; three linear guide rails symmetrically distributed in the circumferential direction are arranged on the surface of the machine base; the centering driving mechanism is used for driving the supporting bases to move along the linear guide rails, and the rotating driving wheels are installed on the centers of the supporting bases; the winding device comprises a supporting frame, a packaging belt I-shaped wheel, a rotating gear ring and a driving gear; the supporting frame is fixedly installedon the machine base; the rotating gear ring is installed on the supporting frame and is in engaging transmission with the driving gear; and the packaging belt I-shaped wheel is installed on the rotating gear ring. By means of the high-efficiency packaging machine and the packaging method for the rotating bearing, the packaging quality and the packaging efficiency of the rotating bearing can be remarkably improved, and the labor intensity of a worker is relieved.

The invention discloses a double toggle rod self-locking clamping device which comprises a driving mechanism and a toggle rod force-increasing self-locking clamping mechanism. The driving mechanism comprises a linear motor, an active piston and a hydraulic cylinder; one end of the active piston is fixedly connected with the output end of the linear motor, and the other end is provided with a liquid medium; the driving mechanism is used for driving an output mechanism and a reset mechanism through pipes; each pipe is provided with a controllable switch valve; the toggle rod force-increasing self-locking clamping mechanism comprises at least two toggle rod groups; each toggle rod group comprises an upper toggle rod, a lower toggle rod and a first-stage toggle rod; the upper toggle rod is articulated with the lower toggle rod; the first-stage toggle rod is articulated with the upper toggle rod; and the first-stage toggle rods are articulated together and the articulation points are located between an output piston and a reset piston. The driving mechanism of the double toggle rod self-locking clamping device adopts the Pascal's principle, takes the fluid within a sealed space as the transmission medium and uses the piston with a small diameter to push the piston with a large diameter to move to realize the force increase and the stroke reduction. The double toggle rod self-locking clamping device can be used for clamping rapidly with large clamping force at high efficiency.

The invention provides a packaging box drop test clamping device. The device is characterized in that the device is symmetrically designed and comprises a packaging box lifting frame body, transverse adjusting guide rods, air cylinders, packaging box swinging arms, inclination angle clamping parts and flat arrangement supporting assembly parts. With the packaging box drop test clamping device of the invention adopted, drop test requirements of a drop attitude with the bottom of a package facing downwards, a drop attitude with the top of the package facing downwards, a drop attitude with one side of the package facing downwards, a drop attitude with one end of the package facing downwards, a drop attitude with the bottom of the package facing downwards, and a drop attitude with an inclination angle formed between a main axis and a vertical direction can be satisfied.

The provided arbitrary-travel high-precise direct driver comprises: based on bionic motion principle, applying piezoelectric ceramic as basic motion executive element, high-tension high-toughness mono-strand or multi-strand ring rope as output element, lateral / vertical shrinking unit as drive element. Wherein, the control precision can achieve up to 50nm, output force up to 50-100N or more. This invention has wide application, special to anthropomorphic robotic.

The invention relates to the technical field of part machining, and discloses a positioning mounting clamp for metal part machining, which comprises a mounting base; a machining table is fixedly mounted on the right side of the top of the mounting base; a stamping device is fixedly mounted on the top of the machining table; a stamping seat is arranged in the middle of the top of the machining table; limiting devices are movably connected to the positions, opposite to the front side and the rear side of the stamping base, of the top of the machining table correspondingly; and a cleaning device is arranged at the bottom of the machining table. According to the positioning mounting clamp for the metal part machining provided by the invention, a metal plate is continuously stamped by setting the stamping device, in the stamping process, the limiting devices are driven to conduct self-adaptive clamping on the metal plate, the metal plate is prevented from loosening, meanwhile, the cleaning device is driven to conduct air injection cleaning on the stamping seat, the stamping precision is prevented from being affected, meanwhile, a feeding device is driven to conduct continuous feeding, the work efficiency of stamping forming is improved, linkage is achieved between structures, and the automation degree is high.

The invention discloses a servo punching device suitable for various punching modes and a punching process. The servo punching device is characterized by comprising a body part and an exchange part, wherein the body part comprises an upper body part and a lower body part, and the exchange part comprises a male die and a female die; and the male die is one of a pin punching male die, an upward folding male die and a downward folding male die, and the female die is one of a pin punching female die, an upward folding female die and a downward folding female die. The servo punching device suitablefor various punching modes is simple in structure, stable, efficient and particularly suitable for improving the quality of small-particle products of the SOT series; and according to the punching device with the structure, under the driving of a servo motor, a movable plate bears a lead frame to do reciprocating motion at all working positions, and pin punching, upward folding punching and downward folding punching are achieved through the driving of a servo runner punching mechanism.

The invention discloses a pressing tool clamp, and relates to the technical field of tool clamps. The pressing tool clamp comprises two tool clamping handles; movable rods are fixedly connected to thesurfaces of the two tool clamping handles; the axes of the two movable rods are rotationally connected through a movable shaft; a locking device is fixedly connected to the surface of the movable shaft between the two movable rods; limiting rings are fixedly connected to the two ends of the movable shaft; one ends of the movable rods are fixedly connected with chucks; the surfaces of the two toolclamping handles are rotationally connected with connecting rods through movable pieces; the surfaces of the connecting rods are slidingly connected with the locking devices; and the connecting rodsare provided with notches matched with the locking devices. The pressing tool clamp achieves a fixed locking function; and when the tool clamp clamps objects, the tool clamp can be kept in a clampingstate, so that falling of the tool clamp due to wrong collision cannot occur, the tool clamp is not limited by plasticity of a spring, and the clamping capacity and the stability of the tool clamp areimproved.

The invention provides a rapid disposable syringe destroyer and an application method thereof, and relates to the technical field of medical waste treatment. The rapid disposable syringe destroyer comprises a shell, an injection tube clamping mechanism, an injection tube destroying mechanism, a needle tip heating device and an ultraviolet lamp, wherein an injection tube destroying cavity, a needleheating cavity and a needle recycling cavity are sequentially formed in the shell from top to bottom; the injection tube clamping mechanism is used for clamping an injection tube of a disposable syringe; the injection tube destroying mechanism is used for cutting the injection tube of the disposable syringe; the needle tip heating device is used for heating a needle of the disposable syringe; andthe ultraviolet lamp is installed in the needle recycling cavity. The rapid disposable syringe destroying method is applied to the rapid disposable syringe destroyer. According to the rapid disposable syringe destroyer and the application method thereof, an alternating magnetic field is excited through high-frequency alternating current in an electromagnetic coil, so that the needle tip in the magnetic field generates eddy current, the needle tip is rapidly heated through eddy current, the injection tube connected with the needle tip is melted, and the needle tip is separated from the injection tube.

The invention relates to an industrial production robot, and specifically relates to an intelligent mechanical arm capable of achieving automatic grabbing and direction changing and a robot. The intelligent mechanical arm comprises a fixed arm and a movable arm hinged to the fixed arm, the upper portion of the fixed arm is connected with a walking frame in a rotating mode, and a walking assembly is arranged on the walking frame. An opening and closing assembly is installed on the fixed arm and connected with the walking assembly through a transmission assembly arranged on the walking frame. A direction changing structure connected with the transmission assembly and the fixed arm is installed on the walking frame. At the beginning, the walking assembly works and does not drive the walking frame to walk along a sliding structure, the walking assembly helps to drive the transmission assembly to work, the transmission assembly drives the opening and closing assembly to move to make the movable arm rotate and cooperate with the fixed arm to clamp goods, and all components in the walking assembly begin to be combined after complete clamping, and the walking frame is driven to move along the sliding structure . Meanwhile, the transmission assembly is separated from the opening and closing assembly and combined with the direction changing structure to drive the fixed arm, the movable arm and the goods clamped between the fixed arm and the movable arm to be turned over and subjected to direction changing together.

The invention provides a clamp control device, comprising a fixed support and further comprising a first motion device arranged on the fixed support, a second motion device, a third motion device arranged above a running clamp and a telescopic device linked or reset with the first motion device or the second motion device or the third motion device along the running direction of the clamp, wherein an electric connector connected with a controller is arranged on the first motion device, the second motion device and the third motion device respectively, each electric connector can receive the motion time determined by the controller respectively, the first motion device and the second motion device produce opposite motions close to the running clamp or same motion away from the clamp at the motion time to clamp or release the clamp, and the third motion device directly applies a pressure to the clamp when the clamp is clamped, so that a mounting clearance is opened for clamping an electroplated plate in the clamp. Therefore, the automation degree is high.

The invention provides an automatic locking shockproof hammer, which comprises two hammer heads, a connecting rod, a hanging rod and a clamping member, wherein the clamping member comprises two hinged semicircular tiles, one of the semicircular tiles is fixed on the hanging rod, the edges of the two semicircular tiles are provided with pull wire threading holes respectively, the pull wire threading hole of one of the semicircular tiles is fixedly provided with a fixed pull wire in a threading mode, the inner surfaces of the two semicircular tiles are provided with reverse hanging teeth respectively, the hanging rod is provided with a wire tightener, the wire tightener comprises a rotating shaft arranged on the hanging rod, a ratchet wheel arranged at one end of the rotating shaft, a pawl arranged on the hanging rod above the ratchet wheel and a winding wheel arranged at the other end of the rotating shaft, the winding wheel is wound with a winding rope, one end of the winding rope is fixed on the winding wheel, the other end of the winding rope is provided with a pull ring, and the rotating shat is further provided with a fixing structure used for fixing the other end of the fixed pull wire. The automatic locking shockproof hammer provided by the invention can save time and labor, and the installation work can be completed very safely.

The invention discloses equipment for detecting volatile organic compounds in water. The equipment comprises a bottom plate, negative pressure equipment, a detector, a corner driving mechanism, a circular groove, a linear driving mechanism, an air cylinder, a puncture needle and a pressing ring, the corner driving mechanism is arranged on the upper end face of the bottom plate, the driving end of the corner driving mechanism is connected with the bottom center of the circular groove, and a plurality of test bottle clamping mechanisms are annularly arrayed on the bottom face of an inner cavity of the circular groove. The linear driving mechanism is arranged on the bottom plate, the driving direction of the linear driving mechanism is perpendicular to the bottom plate, the driving end of the linear driving mechanism is provided with a push column axially perpendicular to the bottom plate, the lower end of the push column is provided with a mounting plate, and the lower end face of the mounting plate is provided with an air cylinder with a telescopic end vertically downward and provided with the puncture needle. The equipment is convenient to use, and the labor intensity of workers is reduced.

The invention provides an angling cylinder with a pressure maintaining function, belongs to the technical field of machinery and solves the problem that the conventional angling cylinder does not havethe pressure maintaining function and is poor in stability. The angling cylinder comprises a cylinder body and a big piston arranged in the cylinder body and capable of moving forwards and backwards,wherein an oil chamber I is formed by the rear end of the big piston and the inner wall of the cylinder body, an oil chamber II is formed by the front end of the big piston and the inner wall of thecylinder body, an oil channel I and an oil channel II are formed in the big piston, an outlet of the oil channel I communicates with the oil chamber I, a positioning hole is formed in the big piston,the oil channel I communicates with the positioning hole, the oil chamber II communicates with the oil channel II through the positioning hole, a check valve and a small piston are arranged in the positioning hole from front to back, the check valve is closed in front-to-back direction and can be opened when the small piston moves forwards, the communication part of the oil channel I and the positioning hole is located at the rear of the small piston, and the communication part of the oil channel II and the positioning hole is located between the small piston and the check valve. The angling cylinder has the advantages that pressure maintaining can be realized, normal work of the angling cylinder can be guaranteed, stability is good, and the like.

The invention discloses a centralized detection device for an air collection sample. The centralized detection device comprises a supporting plate, a corner driving mechanism, a circular groove, an L-shaped seat, an electric telescopic rod, an air cylinder, a puncture needle, a pressing ring, a vacuumizing pump and an air detector; the corner driving mechanism is arranged on the upper end face ofthe supporting plate, a driving end of the corner driving mechanism is connected with the center of the bottom of the circular groove, and a plurality of gas collecting bottle clamping mechanisms areannularly arrayed on the bottom face of an inner cavity of the circular groove; the electric telescopic rod is arranged on the supporting plate through the L-shaped seat, the axial direction of the electric telescopic rod is perpendicular to the supporting plate, the telescopic end of the electric telescopic rod faces the supporting plate, the telescopic end of the electric telescopic rod is provided with an installation plate and an air cylinder is disposed on the lower end face of the installation plate, and the telescopic end of the air cylinder is vertically downward and provided with thepuncture needle. The vacuumizing pump and the air detector are arranged on the upper end face of the supporting plate, an air suction end pipeline of the vacuumizing pump is communicated with the puncture needle inner cavity, and an air outlet end pipeline of the vacuumizing pump is communicated with the air detector. The device is convenient to use, and the working intensity is reduced.

The invention discloses a practical shoe take-off shoe. According to the technical scheme, the practical shoe take-off shoe comprises a base body matched with a shoe sole. The base body is used for covering the shoe sole. The practical shoe take-off shoe further comprises a rotary shaft, a left leaf spring, a right leaf spring, a transmission device, a co-movement device, a buckling connecting piece and a buckling releasing piece. The rotary shaft transversely penetrates through the base body and is in rotary connection with the base body, one end of the left leaf spring is connected with the left end of the rotary shaft, the other end of the left leaf spring is rightwards bent in an arc mode, one end of the right leaf spring is connected with the right end of the rotary shaft, the other end of the right leaf spring is leftwards bent in an arc mode, and the left leaf spring and the right leaf spring are mutually overlapped to jointly form a half ring. The transmission device drives the rotary shaft to rotate to overturn the half ring and enable the half ring to clamp a vamp, the co-movement device is used for gradually reducing the half ring, the buckling connection device is used for being in buckled connection with the transmission device, and the buckling releasing device is used for releasing the buckling connection state of the buckling connection piece. The practical shoe take-off shoe has the advantages of being simple, reasonable, convenient to manufacture and install, capable of completing operation through foot stepping and small in occupied space when being not used.

The invention relates to a drip irrigation belt collecting mechanism and a full-automatic drip irrigation belt recovering machine. The drip irrigation belt comprise a collecting mechanism frame, a collecting guide rod, a collecting slide block and a collecting manipulator, wherein the collecting guide rod is a vertical slide rod, and the collecting slide block is a sleeve on the slide rod; the collecting manipulator comprises a manipulator driving mechanism and at least one pair of collecting hooks, the rear ends of the collecting hooks are hinged with the collecting slide block, and the middle parts of the collecting hooks are provided with a connecting rod which is connected with the manipulator driving mechanism; a collecting manipulator propulsion mechanism is arranged on the collecting mechanism frame. According to the invention, a success rate of picking a drip irrigation belt by the collecting manipulator is greatly improved, a drip irrigation belt carrier roller is horizontallyarranged and is used for supporting the drip irrigation belt and preventing the drip irrigation belt from slipping off; a tension spring is arranged between drip irrigation belt guiding mechanisms, so that the drip irrigation belt guiding mechanisms can be kept in a clamping state all the time, and the drip irrigation belt is prevented from falling off; a forced feeding auger can ensure that thedrip irrigation belt is smoothly conveyed to a rotary cutting machine for slicing so as to prevent the drip irrigation belt from entering the rotary cutting machine.

The invention relates to a clamping and cutting integrated pineapple picker which comprises a three-dimensional frame, a clamping device and a cutting device; the clamping device is installed on the three-dimensional frame, the clamping device comprises clamping pieces arranged in a surrounding mode and a clamping driving mechanism for driving the clamping pieces in the three-dimensional frame to move between a clamping position on the inner side and an initial position on the outer side, and when the clamping pieces are located at the initial position, the clamping pieces and an annular opening of the three-dimensional frame form a channel for pineapple fruits to penetrate through; the cutting device is installed on the three-dimensional frame and comprises a cutting tool located below the clamping pieces and a cutting driving mechanism. The invention further relates to a pineapple picking robot. The pineapple picking robot comprises a pineapple picking vehicle-mounted robot or a pineapple picking flying robot which can be used as a carrier of an end effector. The invention further relates to a clamping and cutting integrated pineapple picking method. According to the invention, the pineapple fruits are rapidly clamped, pineapple stems are rapidly cut to ensure that the fruits are complete and not damaged, and meanwhile, the pineapple cutting success rate is ensured. The invention belongs to the field of pineapple harvesting machinery.

The computer-controlled chemical mechanical polishing device comprises a base, a hydraulic oil cylinder is fixedly connected to the upper end of the base, a mounting plate is fixedly connected to the movable end of the hydraulic oil cylinder, a polishing pad is fixedly connected to the upper end of the mounting plate, and a U-shaped frame is fixedly connected to the upper end of the base; a motor is fixedly connected to the inner top of the U-shaped frame, a disc is fixedly connected to the output end of the motor, a fixing mechanism is mounted on the disc and comprises a plurality of fixing shafts symmetrically and fixedly connected to the lower end of the disc, fixing blocks are fixedly connected to the lower ends of the fixing shafts, and fixing grooves are formed in the lower ends of the fixing blocks. Two sliding grooves are symmetrically formed in the inner wall of the fixing groove, and two fixing rods are slidably connected to the inner walls of the two sliding grooves. According to the cleaning mechanism, residual polishing liquid and metal pollutants on the surface of a workpiece can be quickly cleaned away, the labor intensity of workers is greatly reduced, and the chemical polishing efficiency is improved.

The invention relates to the field of drainage engineering technologies, in particular to a pipeline positioning support for water supply and drainage engineering. The pipeline positioning support comprises a base and two vertical plates arranged on the base; the two vertical plates are arranged at an interval, and the tops of the two vertical plates are connected with a top plate; a clamping mechanism is arranged on the base; the clamping mechanism comprises a first clamping plate arranged on the base in a sliding mode and a second clamping plate arranged on the base in a sliding mode and opposite to the first clamping plate; the base is provided with a driving assembly used for driving the first clamping plate and the second clamping plate to synchronously move towards each other or away from each other. The pipeline positioning support has the effect of conveniently clamping a pipeline.

The invention relates to an aluminum pipe perforating device with a good effect. The aluminum pipe perforating device comprises a base, a supporting rod, a perforating mechanism and a clamping mechanism, wherein the supporting rod is arranged at one end of the base; the perforating mechanism is arranged at the end, close to the supporting rod, of the base; and the clamping mechanism is arranged under the perforating mechanism. According to the aluminum pipe perforating with the good effect, the clamping mechanism is used for clamping a workpiece, and the perforating mechanism is used for perforating the workpiece; compared with an existing clamping mechanism, flexible clamping is adopted in the mechanism, so that the situation that the surface of the workpiece is scratched due to rigid clamping is avoided; meanwhile, a better clamping effect is achieved through double clamping of the interior and the exterior of the workpiece by the mechanism; and a limiting rod is subjected to multiple fixing, so that when the device is used for perforating, a clamping assembly keeps the clamping state of the workpiece, so that deviation of the workpiece is better avoided, the perforating precision is improved, and a better perforating effect is achieved.

The invention discloses a wine lifter which comprises a rotatable handle, at least two clamps, a connecting portion and an undertaking portion. A cam is arranged on the handle; the clamps are arrangedon the two sides of the handle, and each clamp comprises a movable part and a fixed part, wherein the movable direction of the movable part is defined to be towards and away from the fixed part, theopposite sides of the movable part and the fixed part are provided with notches correspondingly, and the notch of the movable part and the notch of the fixed part are matched to clamp a wine bottle; the connecting portion is used for connecting the movable parts of the opposite clamps on the two sides of the handle; and the undertaking portion is arranged on an assembly body formed by the movableparts and the connecting portion, and when the handle rotates, the cam can push the undertaking portion to enable the movable parts to move towards the fixed parts. The wine lifter can simultaneouslyclamp and transfer multiple bottles of wine; by rotating the handle, the clamps on the two sides of the handle are pushed by the cam to clamp the wine bottle, and the operation is simple.

The invention belongs to the technical field of medical blood collection, and particularly relates to a blood collection pipe storage device and conveying device. The blood collection pipe storage device and conveying device comprises a storage device, a feeding mechanism, a marking mechanism and a conveying device body, wherein the storage device is arranged on one side of the front end of the conveying device body, the feeding mechanism is arranged at the upper part of one end, close to the conveying device body, of the storage device, and is partially suspended on upper part of the front end of the conveying device, and the marking mechanism is arranged on one side of the storage device. According to the blood collection pipe storage device and the conveying device, a blood collection pipe storage device, a moving-out mechanism, the marking mechanism and the conveying device body are combined together, so that the automation of moving out, marking and conveying of vacuum blood collection pipes is realized, the generation of errors is avoided, and the working efficiency is improved.

The invention relates to a yarn adjusting head, comprising a base and more than one yarn adjusting mechanism unit; each yarn adjusting mechanism unit comprises a yarn nozzle plate and a scissor assembly matched with the yarn nozzle plate, a first pin shaft matched with a first slotted hole is arranged at the rear end of each scissor assembly, the first pin shaft at the rear end of the corresponding scissor assembly is connected with the corresponding first slotted hole at the rear end of the yarn nozzle plate in a matched manner, and the front end of each scissor assembly is connected with a base through a guide assembly; the yarn adjusting head further comprises a first resetting assembly connected between the base and the yarn nozzle plate; the yarn adjusting head further comprises a driving device for driving the scissor assemblies to loosen or cut off a yarn. The novel yarn adjusting mechanism is started by the yarn adjusting head, so that yarns can be stably exchanged for knittingneedles on a knitting machine, and the yarns can be clamped and cut at the end of yarn weaving to prepare for subsequent yarn adjusting.

The provided arbitrary-travel high-precise direct driver comprises: based on bionic motion principle, applying piezoelectric ceramic as basic motion executive element, high-tension high-toughness mono-strand or multi-strand ring rope as output element, lateral / vertical shrinking unit as drive element. Wherein, the control precision can achieve up to 50nm, output force up to 50-100N or more. This invention has wide application, special to anthropomorphic robotic.

The invention provides a solid reagent clamping reactor. The solid reagent clamping reactor is skillful in structure design, and can be used for controlling spoon bodies of two clamping spoons of the solid reagent clamping reactor to open and close by simple operation of holding and releasing two clamping arms, so that the solid reagent clamping reactor can be used for sampling a solid reagent conveniently; moreover, after the applying force is released, the clamping spoons of the solid reagent clamping reactor can stably keep the clamping state of the solid reagent and can be used for directly clamping the solid reagent to be put into a liquid reagent which is required for being involved in the reaction for solid-liquid reagent reaction; when the reaction is required to be stopped, the clamping spoons are separated from the liquid reagent via operation; the solid-liquid separation operation is very convenient; other impurities cannot be introduced, and operators cannot be harmed; the safety hazard is reduced; the problems in the prior art that in the solid-liquid reagent chemical reaction experiment or teaching, the solid-liquid separation operation is difficult to carry out, impurities are easy to introduce, the operation safety hazard exists and the like are solved.

The invention provides an auxiliary welding clamp for mechanical design and manufacturing. The auxiliary welding clamp comprises a concentric-square-shaped table, a double-thread screw, a control table, a sleeve and two clamping plates. The two clamping plates are symmetrically arranged in a concentric-square-shaped table groove; the double-thread screw penetrates through the lower ends of the two clamping plates respectively; the control table comprises a large belt wheel and a fixed groove; the large belt wheel is in transmission connection with the double-thread screw; a frame plate is fixedly arranged at the end of one side of the concentric-square-shaped table, a limiting shaft is rotationally arranged at one side, and a small belt wheel is arranged at the other side; the small belt wheel and the large belt wheel are synchronized through a synchronous belt; a cross-shaped groove is formed in the small belt wheel, and four clamping blocks matched with the cross-shaped groove are fixedly arranged in the circumferential direction of the sleeve; a tooth-shaped groove is formed in the limiting shaft; and a movable plate is arranged in the fixed groove in a sliding manner, a tooth-shaped block is fixedly arranged at one side of the movable plate, and the other side of the movable plate is connected with the bottom of the fixed groove through a plurality of springs. According to the auxiliary welding clamp, the clamping plates can be manually controlled to clamp a workpiece to be welded, the clamping force is autonomously controlled, the clamping state is maintained through a mechanical mechanism, and the state is controllable.