143 results about "Pipe wrench" patented technology

The utility model relates to the technical field of finish machining of large rotary tables of boring and milling machines, in particular to an adjustable equal-height sizing block for machining a large rotary table. The device comprises a plurality of equal-height sizing blocks which are fixedly mounted on the table top of the large rotary table; the equal-height sizing block comprises an upper seat body, the upper seat body is connected with a lower seat body, cover plates are installed on the outer side of the upper seat body and the outer side of the lower seat body, a copper flange is installed at the top end of the upper seat body, the copper flange is connected with the upper seat body, a jacking column is installed in the upper seat body, a limiting block is installed at the bottom end of the outer side of the lower seat body, and a wedge block is installed at the bottom end in the lower seat body. A wedge block is arranged at the bottom end of the jacking column, one side of the wedge block is the inner wall of the lower seat body, a hexagon screw is installed on the other side of the wedge block, the other side of the hexagon screw is connected with a lengthened sleeve wrench, a sleeve wrench support is arranged at the bottom end of the lengthened sleeve wrench, and the bottom end of the sleeve wrench support is the ground. The equal-height sizing block provided by the utility model not only has the same height in the original state, but also can ensure the same height in real time, so that the labor intensity of an operator is effectively reduced.

The utility model discloses a self-tightening pipe wrench wrench which comprises a fixed wrench body and a movable wrench head, a fixed connecting plate body is arranged in the middle of the fixed wrench body, an adjusting spiral ring is arranged in the middle of the fixed connecting plate body, a threaded rod is arranged on one side of the movable wrench head, and the threaded rod penetrates through the adjusting spiral ring in a penetrating mode and is matched with the adjusting spiral ring. Arc-shaped grooves are formed in the top end of the fixed clamp body and the bottom end of the movable clamp head, grooves are formed in the two ends of each arc-shaped groove, one-way rotating rollers are arranged in the grooves, rotating shafts are arranged at the axes of the one-way rotating rollers in a penetrating mode, the one-way rotating rollers are fixed in the grooves through the rotating shafts, ratchet wheels are arranged at one ends of the rotating shafts, and pawls matched with the ratchet wheels are arranged in the grooves. A cover plate matched with the groove is also arranged in the groove; through the arrangement of the integral structure, the tubular workpiece can be continuously rotated in one direction by repeatedly rotating the wrench in a small range, and the use convenience is improved.

Various embodiments of pliers and pipe wrenches are provided. Wire cutters enable a finger pivot hole to enhance the grasp of the wire cutters while rotating the tool and / or stripping wire. Pipe wrenches include different configurations of teeth to improve durability and grip on a workpiece. Pliers are provided with axial teeth to enhance gripping a workpiece in different directions. Pliers are provided with selectable mechanical advantages so that a user may select the mechanical advantage desirable for a particular application.

The invention relates to the technical field of oil pipe wrenches, and particularly discloses an anti-skid oil pipe wrench suitable for an oil contamination environment, which comprises a fixed base, an upper clamping plate is slidably connected to the side surface of the fixed base, an upper handle is fixedly connected to the side surface of the fixed base, and a clamping device is fixedly connected to the center position of the side surface of the fixed base. A lower clamping plate is slidably connected to the position, located below the upper clamping plate, of the side face of the fixing base, an upper supporting base is rotatably connected to the bottom of the fixing frame, an upper sliding strip is fixedly connected to the position, located on one side of the upper supporting base, of the bottom of the fixing frame, and an upper rack is fixedly connected to the center of the bottom of the upper base; the side face of the upper base is slidably connected with the side face of the fixed base, the side face of the upper rack is meshed with the side face of the clamping device, and the anti-skid oil pipe wrench suitable for the oil contamination environment achieves the purpose of preventing grease from sliding and being difficult to rotate.

A torque slider tong assembly provides a safe, convenient, light weight, portable, hand-operable dual pipe wrench for use in makeup and breakout of tubular connections. The torque-slider tong assembly includes a backup arm forming a first pipe wrench gripping a first pipe, a torque arm forming a second pipe wrench gripping a second pipe, and an actuator providing motive force moving the torque arm relative to the backup arm transverse to the pipes, which rotates the pipes relative to each other. A torque slider adjustably connects the actuator to the backup arm to adjust the mechanical advantage between the backup arm and the torque arm providing additional setup flexibility. Similarly, a movable pivot point, such as a clevis, adjustably connects the actuator to the torque arm providing additional setup flexibility. Quick-change pins allow positional adjustment of multiple components.

A capped bamboo-joint screw includes a screw body with a set of threaded grooves and a set of unthreaded areas on its outer surface. An adapter post is connected to the left side of the screw body, and a nut is connected to the left side of the adapter post. This device utilizes the alternating distribution of threaded grooves and unthreaded areas. When adjusting the screw length, the user can use pipe wrenches or wire cutters to clamp the unthreaded area and precisely cut it off along a preset break point. The threaded grooves remain intact after cutting, not affecting subsequent threaded connections with nuts or installation components, greatly expanding the length adaptability range and reducing the need for stock specifications. Simultaneously, the Phillips head groove on the left side of the nut, in conjunction with the adapter post, ensures that torque is effectively transmitted to the threaded section when tightening the screw with tools, enhancing installation stability. Furthermore, the integrated metal cap design makes this product aesthetically pleasing and provides excellent protection.

The utility model provides a multifunctional fire-fighting wrench, which relates to the technical field of fire-fighting instruments and comprises a fire hydrant wrench, the fire hydrant wrench comprises an open wrench, an inner pentagonal sleeve and a wrench body, the inner pentagonal sleeve and the open wrench are arranged at the front end of the wrench body, a pipe wrench is arranged at the tail end of the wrench body, and a sleeve component is fixedly arranged on the wrench body. According to the fire hydrant wrench, the pipe wrench and the sleeve assembly are arranged on the fire hydrant wrench, so that the fire hydrant wrench with a single function has other functions, the sleeve head of the sleeve assembly can be replaced, and the sleeve head can be replaced according to actual requirements; the outdoor fire hydrant blank cap and the outdoor water suction pipe blank cap can be opened, closed, repaired and maintained only through a small number of tools, carrying is convenient, working efficiency is high, rescue of a fire scene is facilitated, and the effect of saving time and labor is achieved.

The opening sliding block adjusting type pipe wrench comprises a pipe wrench handle, an upper jaw is arranged on one side of the top of the pipe wrench handle, a pipe wrench handle inner cavity is formed in the pipe wrench handle, a movable column is arranged in the center of the pipe wrench handle inner cavity, the top of the movable column penetrates through the top of the pipe wrench handle, and a lower jaw is arranged on the top of the movable column. The bottom of the moving column penetrates through the bottom of the pipe wrench handle, a clamping groove is formed in the bottom of the pipe wrench handle and located on the outer surface of the moving column, and the surface of the moving column is sleeved with a fixing block; according to the utility model, after the fixed block is taken down as required, the movable column is pushed upwards, and the opening size of the upper jaw and the lower jaw is changed in the pushing process, because the opening size is adjusted by pushing the movable column, the adjustment is simpler and more convenient than the mode of using an adjusting nut in the prior art, and the operation is more convenient. And scale values are arranged at the bottom of the movable column, so that a user can conveniently adjust the device, and the device has certain practicability.

The invention discloses a quick-adjustable movable pipe wrench which comprises a frame rod assembly and a fixing structure, the frame rod assembly comprises a top rod structure, a bottom rod structure and a function box arranged at the end of the top rod structure and the end of the bottom rod structure, and the fixing structure is detachably connected with the end of the frame rod assembly. The fixing structure comprises two semi-cylindrical sleeves, the two sleeves are detachably connected, cuboid connecting plates are arranged on the outer sides of the sleeves, the outer ends of the connecting plates are connected with semi-cylindrical storage tanks, connecting pipes are arranged on the outer walls of the two sides of each storage tank, and a driving structure is arranged close to the inner wall of each storage tank. The driving structure comprises a guide pipe, a column pipe and an output shaft, the inner end of the guide pipe is connected with the column pipe, a sealed plug plate is arranged in the column pipe, the outer side of the plug plate is connected with the output shaft, and the inner end of the output shaft is connected with a fastening structure. The pipe fixing device can quickly fix pipes, and is high in stability and relatively practical.

1. The name of the design product: the pipe pliers (the mouth pliers, the force pliers). 2. The use of the design product: special-shaped / circular workpiece clamping positioning, accurate fixing of workpiece position in welding (such as spot welding, argon arc welding) operation, avoiding displacement during welding. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

A pipe wrench is provided, wherein the pipe wrench includes: a first clamp body including a first handle portion, a first clamping portion and a body portion connected between the first handle portion and the first clamping portion, the body portion including a guide groove having a tooth row; a second clamp body including a second handle portion, a second clamping portion and a pivot hole; and a button inserted in the guide groove and the pivot hole, including a button base, a toothed member and an elastic member disposed between the button base and the toothed member, the button base being movable relative to the guide groove to disengage the toothed member from the tooth row, the toothed member being movable relative to the button base in a radial direction of the button and releasably engaged with the tooth row.

The invention discloses a traceless chain pipe wrench which comprises a chain cangue, symmetrical first connecting seats are arranged at one end of the chain cangue and located on one side of the chain cangue, symmetrical second connecting seats are arranged at the other end of the chain cangue, a first through groove is formed in the middle of the chain cangue, and a chain set is hinged to the first connecting seats through first cylindrical pins. The other end of the chain set penetrates through the first through groove, the second connecting base is fixedly connected to one end of the plier head through a second cylindrical pin, the plier head is provided with a through first through hole, a pawl rod is arranged at the end, close to the chain cangue, in the first through hole, a limiting block is fixedly connected to the end, close to the chain cangue, of the pawl rod, and the other end of the pawl rod is connected with a plier handle. The plier handle is in threaded connection in the first through hole of the plier head. The chain pliers solve the problems that the smooth surface of a pipe body is bitten by existing chain pliers, and the complete and smooth surface of a tool is damaged.

1. Name of the design product: Pipe wrench. 2. Use of the design product: For installing and disassembling pipe fittings. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view.

The utility model relates to a multifunctional casing heavy pipe wrench, which belongs to the technical field of hand tools, and comprises a wrench handle body, a fixed jaw, a movable jaw and an adjusting nut, the fixed jaw is connected to one end of the wrench handle body, the movable jaw comprises a hook head part and a vertical part which are integrally formed, the hook head part is opposite to the fixed jaw, and the vertical part is opposite to the fixed jaw. The vertical part is in sliding connection with the plier handle body and is in threaded connection with the adjusting nut through a surface thread of the vertical part, the surface of the plier handle body is provided with a thread part used for being connected with the sleeve, and the sleeve is connected with the plier handle body in a sleeved mode. The threaded part is arranged on the surface of the plier handle body, and the newly added sleeve is connected with the plier handle body, so that the strength of the plier handle body is not reduced on the premise that the plier handle body is prolonged, and the use requirement is met.

The utility model discloses a mud cleaning tool for a logging cable, and belongs to the technical field of logging instruments. The mud cleaning tool for the logging cable comprises two sponge blocks arranged in a port of a hydraulic pipe twisting machine, the hydraulic pipe twisting machine is arranged at a wellhead of a detection well, a first hook-and-loop fastener is arranged between the inner side wall of the hydraulic pipe twisting machine and the sponge blocks, and the first hook-and-loop fastener comprises a first rough surface adhered to the inner side wall of the hydraulic pipe twisting machine and a second rough surface adhered to the outer side wall of the hydraulic pipe twisting machine. The cable fixing device comprises two sponge blocks and first smooth surfaces adhered to the outer surfaces of the sponge blocks, a second magic tape is arranged between the two sponge blocks, the second magic tape comprises a second rough surface fixed to one sponge block and a second smooth surface fixed to the other sponge block, and a cable penetrates through the space between the two sponge blocks. According to the utility model, on one hand, the cable slurry cleaning device plays a role in cleaning cable slurry, and on the other hand, plays a role in protecting the cable, prevents the cable from being abraded with the port of the hydraulic pipe twisting machine when the cable is lifted upwards, and protects the cable.

1. Name of the product in this design: Pipe wrench (new German style). 2. Purpose of this design: For the assembly and disassembly of pipes. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a tool for quickly disassembling a casing thread protector, which comprises a base, a central screw rod is fixedly connected to the center of the base, and an upper end cover is sleeved on the central screw rod in a threaded manner; the edge of the upper end cover is evenly connected with a plurality of lug plates in the circumferential direction, and the lower ends of the lug plates are connected with tooth plates. The utility model successfully solves the problems of high labor intensity, low working efficiency and the like when a single person or multiple persons use tools such as a pipe wrench, an F-shaped wrench, a crowbar, a hammer and the like to disassemble the casing thread protector in the drilling and workover period. And major safety risks caused by injury accidents due to poor communication or wrong matching when a plurality of persons cooperate with each other to disassemble the casing thread protector are solved. The dismounting tool can be used for rapidly and conveniently dismounting the casing thread protector, is strong in adaptive capacity, and can be suitable for dismounting the casing thread protector with the size range of 6 ''-10'', so that the dismounting operation of the casing thread protector is safer, more convenient and more efficient.

The utility model discloses a hydraulic energy-saving system of a pipe screwing machine, which relates to the technical field of hydraulic systems and comprises a hydraulic oil tank of the pipe screwing machine, a hydraulic oil pump, an oil inlet pipe, an oil outlet pipe, an oil suction pipe and an oil return pipe, the hydraulic oil pump is mounted on the hydraulic oil tank of the pipe screwing machine, and an oil inlet of the hydraulic oil pump is connected with the oil suction pipe arranged in the hydraulic oil tank of the pipe screwing machine. The heat dissipation structure is arranged on the surface of the hydraulic oil tank of the pipe screwing machine, the effective heat dissipation area of the hydraulic oil tank of the pipe screwing machine can be increased, heat in the hydraulic oil tank can be rapidly dissipated through natural heat dissipation, meanwhile, the heat dissipation fan is installed right in front of the heat dissipation structure, the heat dissipation effect is good, and the heat dissipation effect is good. According to the hydraulic energy-saving system of the pipe screwing machine, the flowing speed of air around the heat dissipation structure can be increased, heat on the heat dissipation structure can be rapidly conducted into the surrounding air, and therefore the heat dissipation efficiency of the hydraulic energy-saving system of the pipe screwing machine can be further improved, and the energy-saving effect is achieved.

The utility model relates to auxiliary equipment for tunnel mounting ring and longitudinal blind pipe construction, in particular to a pipe wrench device for fixing a tunnel waterproof plate. Comprising an arc-shaped clamping ring with a notch and an X-shaped connecting rod, the clamping ring comprises a left half arc-shaped clamping ring and a right half arc-shaped clamping ring which are symmetrical to each other, the connecting rod comprises a left connecting straight rod and a right connecting straight rod, and the left half arc-shaped clamping ring and the right connecting straight rod form a whole A; the right half arc-shaped clamping ring and the left connecting straight rod form a whole body B, and the round connecting parts of the whole body A and the whole body B are hinged together through an articulated shaft which is inserted in the whole body A and the whole body B; flat plates are welded to the ends, away from the hinge shaft, of the left half arc-shaped clamping ring and the right half arc-shaped clamping ring correspondingly; when the waterproof plate is laid to the position of the annular blind pipe, the waterproof plate is difficult to be tightly attached by being pressed manually, and the waterproof plate can be better tightly attached to the blind pipe and the primary supporting face with the assistance of the pipe wrench. And the phenomenon that the lining concrete is not compact at the weak disengaging position of the laid blind pipe is avoided.

The invention provides a high-pressure oil pipe wrench intelligent rack with triple mistake proofing, which is connected with a station system of a high-pressure oil pipe mounting station and comprises a mounting bottom plate and a wrench support, the wrench support is used for placing different types of wrenches, and the wrench support is further provided with an indicator light and a proximity switch. The device is used for prompting and detecting the taking of the mounting wrench matched with the high-pressure oil pipe. When the wrenches are placed on the wrong wrench supports on the intelligent rack, the wrenches tilt due to mismatching of the appearances, and first mistake proofing is achieved in the aspect of mechanical structure design; in addition, the indicator lamps corresponding to the wrenches on the intelligent material rack are turned on to remind the staff of the wrenches needing to be picked up, and secondary mistake proofing is achieved; and finally, after a worker takes the wrench, the third mistake proofing is realized by judging whether the wrench is correctly taken or not through a proximity switch, so that the purpose of correctly taking and clicking the wrench is realized, the potential quality hazard caused by mistakenly taking and mounting the wrench is avoided, and the intelligentization of a production line, the production efficiency and the quality stability are improved.

1. Name of the Design Product: Pipe Wrench (Adjustable Positioning). 2. Use of the Design Product: Used as a pipe wrench. 3. Design Key Points of the Design Product: The combination of shape and pattern. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view.

A pipe wrench pivot device is disclosed that is capable of pivoting for increased force. The pipe wrench pivot device comprises a handle component and attached head component that are configured in a conventional pipe wrench shape. The handle component comprises a pivot steel pin that can be locked and unlocked. The pin allows the device to unlock and pivot on the pin, thereby creating additional force when swung. The device is ideal for use in confined spaces and maximizes force and torque using inertia.

The invention discloses a multifunctional pipe wrench, and relates to the technical field of pipe wrenches. Comprising a fixed plier handle, a fixed plier head is fixedly installed at the end of the fixed plier handle, a movable plier groove is formed in the fixed plier head, an adjusting bolt is rotationally installed in the movable plier groove, and a movable plier head is movably installed on the upper end face of the fixed plier head; a fastening assembly is arranged on the fixed tong head and the movable tong head, a driving assembly is arranged on the fixed tong handle, a positioning assembly is arranged on the driving assembly, clamping force between the pipe tong and a pipeline is enhanced through cooperation of the fastening assembly and the positioning assembly, and the fastening assembly comprises a positioning wheel rotationally installed on the movable tong head. And the positioning wheel is fixedly connected with a fastening chain. According to the pipe wrench, through cooperative use of the fastening assembly, the driving assembly and the positioning assembly, the fastening force between the pipe wrench and a pipeline is ensured, the more uniform and stable fastening effect on the pipeline is achieved, and meanwhile the working efficiency and safety are improved.

The utility model discloses a pair of mining hydraulic high-pressure pipeline pin-removing and pipe-drawing pliers, which comprises a hand pump, the front end of the hand pump is provided and communicated with the hand pump, the output end of the hand pump is provided with telescopic inclined iron, one end of the hand pump, which is provided with the telescopic inclined iron, is rotatably provided with a pipe pressing mechanism and a supporting mechanism, and the telescopic inclined iron is positioned between the pipe pressing mechanism and the supporting mechanism; the pipe pressing mechanism comprises a supporting block, one end of the supporting block is hinged to the end face of the hand pump, the other end of the supporting block is fixedly connected with a hoop, an adjusting bolt penetrates through the hoop in a threaded mode, the end, in the hoop, of the adjusting bolt is fixedly connected with a movable clamping block, and the lower end of the supporting block is an inclined face and makes contact with the inclined face of the upper portion of the telescopic inclined iron in a matched mode. According to the device, the hand pump principle and the slope principle are utilized, the high-pressure pipe is automatically pulled out, the labor intensity and the safety risk are reduced, the pipe pressing mechanism and the supporting mechanism are both designed to be adjustable, the device can adapt to high-pressure pipes and connectors of different models, and the universality and practicability of the device are improved.

The utility model discloses a simple special pipe wrench for an air shield dam, which is characterized in that a pipe wrench is provided with a metal cylinder, the upper section of the metal cylinder is provided with a pipe wrench circular force application hole which is vertical and penetrates through the metal cylinder, and the lower section of the metal cylinder is connected with an outer-circle inner-hexagonal pipe wrench head; when the anchoring bolt cap of the air shield dam is installed and constructed, the special pipe wrench for the air shield dam is vertically and downwards sleeved on the bolt cap, then a force application rod with enough strength is inserted into the force application hole of the pipe wrench, and the round rod is rotated to screw the anchoring bolt cap. The simple wrench for the special pipe of the air shield dam is scientific and reasonable in design, simple in structure, easy to manufacture and convenient and easy to use, and solves the installation problem of a large-diameter and large-torque extra-long anchor bolt cap of the air shield dam.

The invention relates to a drill rod clamping and pipe screwing device, which relates to the technical field of drill rod tripping equipment, and comprises a rack, which is vertically provided with a through hole for a drill rod to pass through in a penetrating manner; the clamp holder assembly is fixedly mounted on the rack and is used for clamping a next drill rod; the pipe twisting device assembly is positioned above the clamping device assembly; one end of the pipe screwing seat is fixedly connected to the inner side of the pipe screwing gear ring, the pipe screwing seat is connected to the rack in a sliding mode, the hoop is connected to the other end of the pipe screwing seat in a sliding mode, the driving end of the pipe screwing driving piece is connected to the pipe screwing gear ring in a transmission mode, and the hoop is used for clamping a previous drill pipe. By the adoption of the technical scheme, clamping and pipe screwing operation of the drill rod can be smoothly achieved, and the probability of personnel injury is reduced.

The utility model discloses a novel pipe wrench, and relates to the technical field of pipe wrenchs.The novel pipe wrench comprises a handle and a movable jaw, the movable jaw is in an L shape and is in sliding connection with the side wall of the handle, the handle drives the movable jaw to slide through rotation of an adjusting ring of the handle, and the movable jaw and the handle can be clamped mutually; the clamp is characterized in that a first clamping part is installed on the part, capable of being clamped with the movable jaw, of the handle in the direction away from the handle adjusting ring, and a second clamping part opposite to the first clamping part is installed on the movable jaw; insections are distributed on the opposite side walls of the first clamping part and the second clamping part. The method has the effect of improving the quality of the circumferential outer wall of the pipeline after the pipeline is installed.

A kind of main tong transmission device of pipe wrench, including control system, including transmission case, the inside of which is provided with shaft coupling II, one end of the shaft coupling II is fixedly connected with speed reducer shaft, the other end is fixedly connected with power gear shaft;The outer edge of the power box is provided with speed reducer, the speed reducer one end is connected with motor by shaft coupling I, and speed reducer shaft is fixedly connected by shaft coupling II and power gear shaft;Main tong internal power gear is installed on power gear shaft and engages with idler gear, and the idler gear engages with large gear ring;Motor and control system are electrically connected.The utility model discloses by adjusting the rotating speed of motor to control the fast and slow of main tong clamping device screwing speed, has realized the stepless regulation between high speed and low speed when pipe joint thread is screwed, avoids the phenomenon that screwing torque breaks through torque upper limit and over-tightens, while the actual demand of low speed large torque and high speed small torque in the process of screwing can be realized, protects thread, improves work efficiency.

The invention discloses a pipe wrench assembly and an iron roughneck device, and relates to the technical field of iron roughneck devices.The pipe wrench assembly comprises a fixing frame, a fixed rotating wrench assembly, a movable rotating wrench assembly, a rotating wrench separating and combining mechanism and a power mechanism, and the fixed rotating wrench assembly is fixedly installed on the fixing frame; the moving rotary clamp assembly is arranged on the fixing frame in a manner of moving up and down; the rotating clamp power assembly is in transmission connection with the fixed rotating clamp assembly and the moving rotating clamp assembly and used for driving the fixed rotating clamp assembly and the moving rotating clamp assembly to conduct screwing-on and screwing-off operation. The rotating clamp separating and combining mechanism is used for driving the fixed rotating clamp assembly and the moving rotating clamp assembly to be horizontally separated. The power mechanism is in transmission connection with the moving rotary clamp assembly and used for driving the moving rotary clamp assembly to move up and down. According to the technical scheme, the structure can be simplified, the cost is reduced, and the reliability and applicability are improved.

The utility model discloses a pipe wrench assembly and an iron roughneck device, and relates to the technical field of iron roughneck devices, the pipe wrench assembly comprises a fixing frame, a fixed rotating wrench assembly, a movable rotating wrench assembly, a rotating wrench separating and combining mechanism and a power mechanism, the fixed rotating wrench assembly is fixedly installed on the fixing frame; the moving rotary clamp assembly is arranged on the fixing frame in a manner of moving up and down; the rotating clamp power assembly is in transmission connection with the fixed rotating clamp assembly and the moving rotating clamp assembly and used for driving the fixed rotating clamp assembly and the moving rotating clamp assembly to conduct screwing-on and screwing-off operation. The rotating clamp separating and combining mechanism is used for driving the fixed rotating clamp assembly and the moving rotating clamp assembly to be horizontally separated. The power mechanism is in transmission connection with the moving rotary clamp assembly and used for driving the moving rotary clamp assembly to move up and down. According to the technical scheme provided by the utility model, the structure can be simplified, the cost is reduced, and the reliability and applicability are improved.