31results about How to "High clamping reliability" patented technology

This invention discloses a rail steel transport device, including a fixed ring and a transport vehicle. A connecting ring is movably installed at the top of the fixed ring, and the connecting ring is connected to the transport vehicle through a connector. A telescopic rod is provided on the fixed ring, which is used to achieve docking assembly between adjacent fixed rings. The telescopic rod is equipped with a first screw for locking the telescopic stroke. Movable arms are hinged to both sides of the fixed ring, and clamping arms are hinged to the lower ends of the movable arms. The clamping arms are hinged to each other in pairs, so that the hinge points of the movable arms and clamping arms form a rhomboid structure. The clamping arms are designed with an L-shaped structure. The fixed ring, movable arms, and clamping arms cooperate to form a single clamping structure. This invention uses a double-clamping structure at both ends of the rail steel, combined with a telescopic rod to form an integrated limiting frame. During lifting operations, both ends of the rail are simultaneously stressed, improving the problem of steel body tilting and dragging wear caused by uneven load distribution in traditional single-point fixing.

The invention relates to the technical field of part machining, and discloses a multi-station anti-vibration cutter stabilizing mechanism for carbon fiber part machining, which comprises a cutter chuck arranged on machining equipment; the milling cutter is used for machining parts; and the clamping mechanism is arranged on the cutter chuck and used for stably clamping the milling cutter, the clamping mechanism comprises a hollow sleeving ring, and the hollow sleeving ring axially moves after rotating. According to the multi-station anti-vibration cutter stabilizing mechanism for machining the carbon fiber parts, the positioning mechanism is arranged, and an axial hard positioning structure capable of being locked is arranged at the end of a milling cutter, so that end mechanical jacking and position locking are synchronously achieved after radial clamping of the cutter is completed, and the overall axial supporting rigidity of the cutter is remarkably improved; axial micro-motion and chatter caused by axial cutting force change and multi-station frequent reversing in the carbon fiber machining process are effectively restrained, and the quality defects such as layering and chatter marks on the machined surface are avoided.

The utility model provides a kind of wheel hub multi-station clamping rotary table device, it is related to wheel hub multi-station clamping rotary table technical field. Including clamping rotary table mechanism, clamping rotary table mechanism side is provided with pre-placed support structure;The pre-placed support structure includes two L-shaped frames, the opposite side of two L-shaped frames is all opened with installation groove, and one L-shaped frame is installed with first motor by installation groove, the output end of first motor is installed with shaft rod, by setting pre-placed support structure, before wheel hub enters clamping procedure, first preliminary positioning is carried out on the bracket of pre-placed support structure, in this process, according to the size of wheel hub, it is needed to install the bracket of appropriate size circle diameter on square block, then it is moved to clamping rotary table mechanism and is clamped operation, the problem of unstable placement possibly appearing when wheel hub is directly placed on clamping rotary table mechanism is avoided as far as possible, to provide stable basis for subsequent clamping procedure, improve clamping reliability.

The application discloses electric power fitting fixing frame, belongs to electric power fitting field, including two groups parallel distribution's main frame, two groups main frame outer surface fixedly connected with movable rod, movable rod rotationally connected with support rod one, support rod one outer surface upper and lower sides rotationally contact with main frame outer surface, two groups main frame between be provided with buffer assembly, buffer assembly include with support rod one outer surface fixedly connected with movable sleeve, main frame outer surface open with guide groove.Can realize through setting buffer assembly, through the shape change of capsule can effectively buffer absorption to support rod one received impact, thereby can effectively reduce the impact that support rod one received, not only can effectively reduce the vibration amplitude of split conductor, thereby can reduce the probability that whip of wire between each other occurs, simultaneously also can effectively improve the installation stability of wire.

The application provides a telescopic supporting clamp for milling off to 90-degree machining and a profile machining device, which is applied to the technical field of profile machining and is arranged in a sawing area of the profile machining device. The profile machining device further comprises at least a feeding area and a discharging area. After being machined in the sawing area, the profile workpiece is sent to the discharging area for discharging. The supporting clamp comprises a Z-axis clamping module arranged on the side of a 90-degree saw blade and used for clamping the profile workpiece when the 90-degree saw blade mills off; and a Y-axis driving module connected with the Z-axis clamping module and used for driving the Z-axis clamping module to telescopically extend in the Y-axis direction. By additionally arranging a clamp capable of telescopically extending in the Z-axis direction on the side of the 90-degree saw blade, the clamp extends out to clamp the profile when the 90-degree saw blade cuts off, thereby playing an auxiliary supporting and fixing role, reducing the deformation of the workpiece during machining and improving machining precision.

The utility model belongs to the field of plunger machining, and particularly relates to a positioning and pushing device for plunger machining, which comprises a support, a mounting port is arranged at the top end of the support, a driving motor is sleeved in the mounting port, the output end of the driving motor is fixedly connected with a pneumatic push rod, and one end of the pneumatic push rod is fixedly connected with a mounting ring. A penetrating moving opening is formed in the inner bottom wall of the mounting ring, a positioning assembly is arranged on the surface of the moving opening, the positioning assembly comprises track plates fixedly connected to the side face of the mounting ring in an axial symmetry mode, extrusion blocks are slidably connected to the surfaces of the track plates in an axial symmetry mode, and rubber sheets are fixedly connected to the top ends of the extrusion blocks. By arranging the track plate, the extrusion blocks, the rubber sheets and the forward and reverse screw rods of the positioning assembly, the forward and reverse screw rods are manually screwed to drive the extrusion blocks on the two sides to synchronously approach and move along the track plate, the plunger is mechanically clamped and positioned through the rubber sheets, the clamping failure problem caused by electrical structure faults is avoided, and the clamping stability and reliability are improved.

The utility model discloses a quick -wearing formula magnetism sucking disc relates to magnetic fixture technical field, including the bottom plate of being fixed on the workbench through screw, the bottom plate is placed with the disk body, and the disk body both sides are fixedly connected with the connecting plate, is equipped with the pressing plate on the connecting plate, and the pressing plate is installed with locking mechanism symmetry on. The locking mechanism includes the locating pipe, the lock core column, the spring, the stop head and the clamping ball, and the locating pipe penetrates the pressing plate, the connecting plate and the bottom plate, and the bottom plate is equipped with the connecting hole and the annular groove, when the lock core column resets under the spring effect, the clamping ball embeds the annular groove and realizes locking, and the lock core column is pressed and then removes the locking. The structure cooperates through the pressing plate and the locking mechanism, realizes the quick connection and disassembly of disk body and bottom plate, improves the assembly efficiency and the positioning accuracy, has simple structure, convenient operation, locking reliable advantage, is applicable to the quick clamping operation under a variety of working conditions.

The utility model relates to a kind of sample bottle bottle-opening device, sampling device and stereoscopic structure detection device, it includes drive mechanism, screw cap mechanism, fixed mechanism and tray mechanism, wherein, the support module of tray mechanism includes several modularized racks, rack can make the sample bottle suspended on it Setting;Screw cap mechanism can be clamped to sample bottle, to make under the driving effect of drive mechanism drive sample bottle to carry out multidimensional motion, and can be transferred to the sample bottle placed on tray mechanism to fixed mechanism;The bottle body support plate of fixed mechanism can support the bottle bottom of sample bottle, and by bottle gripper from the opposite side of sample bottle Clamping, to realize the limiting of the bottle body of sample bottle;When the bottle body of sample bottle is limited by fixed mechanism, the bottle-opening gripper of screw cap mechanism can make the bottle cap of sample bottle be limited by the way of tightening bottle-opening gripper, and by bottle-opening motor drive bottle-opening gripper drive bottle cap to rotate.

The utility model discloses a testing machine clamping adjusting chuck which comprises an inner cylinder body, sliding seats are installed on the two sides of the inner cylinder body, the sliding seats penetrate through the outer wall of the inner cylinder body, one sliding seat can rotate along the axis of the inner cylinder body, clamping blocks are installed on the sliding seats and located on the radial inner side of the inner cylinder body, and the outer wall of the inner cylinder body is sleeved with the clamping blocks. The clamping blocks can rotate along the axis of the inner cylinder under the driving of one sliding seat, the clamping blocks are arranged in pairs and provided with wall surfaces, the two wall surfaces are oppositely arranged, a gap cavity is formed between the two wall surfaces, second opening parts are formed in the two sides of the gap cavity, and the wall surfaces are in the shape of inwards-concave arc surfaces; wherein one first opening part and the second opening part are arranged on the same side, and the clamping block rotates to enable the opening of the second opening part to be enlarged. The utility model provides a clamping adjusting chuck of a testing machine. The clamping reliability of a clamping body is improved.

The utility model discloses an aviation tire tread sorting stacking robot belongs to tire production and processing equipment technical field. The robot includes mobile station, elevating system, stacking mechanism, clamping device, first placing rack and second placing rack and control box. The elevating system realizes height adjustment through the cylinder drive X type frame, and the stacking mechanism is equipped with six -axis machine arm and flexible clamping jaw, can accurate capture and carry to different size tire tread. Multiple sets of flexible clamping jaw evenly distribute in the clamping device all around, and are equipped with antiskid pad, ensure the stability and security in the process of capturing. The robot system realizes the efficient, accurate sorting and stacking of aviation tire tread through the automation operation, improves production efficiency and operation quality, has reasonable structure, convenient operation, strong adaptability and the advantages such as.

The utility model relates to the technical field of liquid nitrogen tanks, in particular to a liquid nitrogen tank moving frame protection structure which comprises a horizontal bracket provided with moving wheels and further comprises a clamping protection part which comprises a vertical positioning frame vertically installed on the periphery of the horizontal bracket and two clamping plates detachably and symmetrically installed on the vertical positioning frame. The two clamping plates are used for clamping a liquid nitrogen tank body; the vertical stop block is mounted on the horizontal bracket and is used for limiting the liquid nitrogen tank body; according to the protection structure of the liquid nitrogen tank moving frame, through the arranged clamping protection part, a liquid nitrogen tank body can be clamped and fixed, the clamping distance can be adjusted through the structure, the application range is wide, and liquid nitrogen tanks of more specifications can be clamped; in addition, the arranged vertical check blocks can be matched with the clamping plates to improve the clamping reliability in the moving process, the arranged balance weight bin is beneficial to lowering the overall gravity center, and the problem that the liquid nitrogen tank falls down in the moving process is avoided.

The utility model discloses a cleaning device for electric power maintenance, which comprises a U-shaped support and a power transmission line, a support frame with a U-shaped section is fixed on the side of the U-shaped support, an L-shaped groove is arranged on the support frame, telescopic cylinders are symmetrically fixed on two inner side walls of the top end of the L-shaped groove, semicircular scrapers are fixed at piston ends of the telescopic cylinders, and the semicircular scrapers are fixed on the top end of the L-shaped groove. The two semicircular scrapers are combined to form a circular scraper set with the inner diameter gradually changing in the axial direction, and the front end of a power transmission line is arranged in the circular scraper set in a penetrating mode. A driving component is arranged on the U-shaped support, a rectangular frame is arranged at the bottom of the driving component, a clamping moving component is fixed on the rectangular frame, the clamping moving component comprises rollers, the bottoms of the rollers are rotatably arranged on the inner side wall of the supporting frame around the center shafts of the rollers, and the power transmission line is arranged between the rollers in a penetrating manner. The utility model belongs to the technical field of power equipment, and particularly relates to a cleaning device for power maintenance.

The utility model discloses a high-reliability welding tool, which belongs to the technical field of welding tools and comprises a support seat, bolts are mounted at four corners of the support seat in a threaded manner, a support seat and a support body are fixedly mounted on the upper surface of the support seat, a threaded rod is mounted on the support seat in a threaded manner, and the threaded rod is fixedly mounted on the support body. A hand-cranking wheel is fixedly installed at one end of the threaded rod, fixing blocks are fixedly installed on the left side face and the right side face of the support correspondingly, a first rotating shaft is rotationally installed between the two fixing blocks, and a pressing plate is fixedly installed on the outer surface of the first rotating shaft; the threaded rod is arranged to be used in cooperation with the pressing plate and the rotating arm, the pressing plate is driven to rotate downwards through rotation of the threaded rod, then the bottom end of the rotating arm is driven to swing outwards, the second rotating shaft is matched to drive the top end of the rotating arm to drive the claw clamp to swing inwards, then a workpiece is clamped and fixed, the overall structure is simple, and the loosening phenomenon is not prone to occurring. The overall clamping reliability is greatly improved, and the precision of subsequent welding operation is guaranteed.

The utility model relates to a pathological section scanning appearance, through the mechanical linkage clamping structure of bevel clamping push rod, the avoidance design of telescopic edge movable block, realize the automatic accurate clamping and complete scanning of section, and with Y axle module movement cooperation, promote scanning efficiency and image quality, through carousel formula multichannel layout, middle rotation switching mechanism and excitation module detachable design, realize the quick switching of excitation channel, flexible replacement and whole machine accurate adaptation, promote multichannel scanning efficiency and versatility of fluorescence.

This utility model relates to the field of electronic components and discloses an electronic component with a protective structure, including a circuit board and a protective cover. The component body is fixedly mounted on the upper end of the circuit board. A mounting hole is provided on the upper end of the protective cover. A filter screen is fixedly mounted on the upper inner side of the mounting hole. A motor is fixedly mounted at the lower center of the filter screen. A fan is fixedly fitted onto the output end of the motor. Fixed posts are fixedly mounted on both sides of the inner perimeter of the protective cover. Springs are mounted at the bottom of the inner ends of multiple fixed posts. Movable posts are fixedly mounted at the front ends of multiple springs. Clamping plates are fixedly mounted at the front ends of each pair of movable posts. Connecting blocks are fixedly mounted on the lower ends of both sides of the outer perimeter of the protective cover. In this utility model, the fan can quickly cool the component, preventing overheating damage, and the movable posts can move within the fixed posts, preventing spring displacement.

An electronic device includes a housing, a first substrate disposed in an internal space of the housing, a conductive structure disposed at a location isolated from the first substrate, a second substrate electrically connected to the conductive structure and the first substrate, and an electrical connection member electrically connecting the second substrate to the conductive structure. The electrical connection member may include a first fixing portion fixed to the conductive structure, a second fixing portion fixed to the second substrate, and a connection portion connecting the first fixing portion and the second fixing portion. The first fixing portion includes a first bent portion bent along a first bent line from a neck portion, that is, a boundary area with the connection portion, and a second bent portion bent along a second bent line from the first bent portion. The first bent portion is bent in a first direction becoming distant from the conductive structure, and The second bent portion is bent in a second direction opposite to the first direction.

The application provides a chuck assembly of a jigsaw, and relates to the technical field of jigsaws, which comprises a chuck body, a rotating sleeve, an elastic clamping sleeve and a plurality of steel balls. The inner periphery of the rotating sleeve is provided with a plurality of eccentric grooves in the circumferential direction, the plurality of eccentric grooves are arranged in one-to-one correspondence with the plurality of steel balls, and each eccentric groove is in communication with a saw blade mounting position. The plurality of eccentric grooves comprise a first eccentric groove group located on both sides of the saw blade in the width direction and a second eccentric groove group located on both sides of the saw blade in the thickness direction. When the rotating sleeve rotates from the release position to the locking position, the steel balls located in the first eccentric groove group move radially inward and press the elastic clamping sleeve tightly, so that the elastic clamping sleeve deforms towards the saw blade to clamp the saw blade in the width direction. The steel balls located in the second eccentric groove group move radially inward and press both sides of the saw blade in the thickness direction to clamp the saw blade in the thickness direction. The eccentric grooves drive the steel balls to apply radial force in different regions to clamp the saw blade in the width and thickness directions simultaneously.

The utility model relates to a quick-release connecting module which comprises a hook, a turnover connector and a lamp connecting seat, the hook is connected to the lamp connecting seat in a turnover mode through the turnover connector, the hook comprises a hook body, a movable pressing plate, a pushing and pressing piece and a driving assembly, and a first clamping part is arranged on the hook body; the first clamping part is hinged to a first hinge point on the hook body and is provided with a second clamping part, and the first clamping part and the second clamping part form a clamping opening; the second clamping part is hinged to a second hinge point on the hook body and is provided with a first pushing and pressing part, and the first pushing and pressing part is used for abutting against the movable pressing plate so as to push the movable pressing plate to rotate and enable the second clamping part to be close to the first clamping part; and the second pressing plate is movably arranged on the hook body and is provided with a second pushing and pressing part, and the second pushing and pressing part is used for abutting against the pushing and pressing piece so as to push the pushing and pressing piece to abut against the movable pressing plate and enable the movable pressing plate to rotate. According to the quick-release connecting module, the effect of adjusting the time for mounting and dismounting the lamp hook can be achieved, and the clamping reliability can be effectively improved when the lamp is transversely hung.

The embodiment of the utility model discloses a head lamp fixing device and a lighting device, the head lamp fixing device comprises a support, the support is provided with an insertion hole and a side buckle, the insertion hole comprises an insertion part with a larger width and a clamping part which is communicated with the insertion part and has a smaller width, and the side buckle is arranged on one side of the clamping part; the clamping piece is used for clamping and fixing the device on a to-be-mounted surface; one end of the connecting piece is connected with the clamping piece, an inserting column is arranged at the other end of the connecting piece, a position indicating groove is formed in the outer surface of the inserting column, and when the inserting column is inserted into the inserting part and then slides inwards to the clamping part, the position indicating groove is clamped by the side buckle, so that connection and fixation are achieved. According to the head lamp fixing device provided by the utility model, the rapid insertion of the insertion column and the insertion hole and the limiting matching of the position indicating groove and the side buckle realize the efficient disassembly and assembly and stable connection of the head lamp, the operation convenience is improved, and the modularized compatibility and the multi-scene adaptability are realized at the same time.

The invention discloses a grabbing device for logistics expresses, and relates to the technical field of logistics expresses, the grabbing device comprises a support frame, a translation mechanism, a lifting mechanism and a grabbing mechanism, the translation mechanism is arranged on the support frame, and the lifting mechanism is arranged on a moving frame. The grabbing mechanism is driven by the translation mechanism and the lifting mechanism to adjust the position, the grabbing mechanism adopts an air cylinder driving matching rack and moving gear linkage structure, and when the air cylinder acts, the two clamping plates can be driven to synchronously move in the same direction or in the opposite directions through meshing transmission of the rack and the moving gear, so that the synchronism of the clamping action is guaranteed, and the clamping efficiency is improved. Clamping deviation is avoided; the inner sides of the clamping plates are provided with X-shaped structure rubber pads and evenly-distributed anti-skid grooves, the X-shaped structures can increase the contact area with the surfaces of the expresses and adapt to the expresses of different shapes and sizes, the anti-skid grooves can remarkably improve the friction force of the contact surfaces, the expresses are effectively prevented from sliding off in the clamping and transferring process, and the clamping reliability is improved.

The utility model discloses a workpiece clamping device for machining center, including base, limit ring, adjusting seat and top tight mechanism, be provided with the circular boss on the base, is provided with the annular clamping groove to the boss outer periphery, and the several adjusting seat is clamped in the clamping groove, and adjusting seat is along the clamping groove circumferential movement and is positioned through the clamping block and locking screw, be provided with top tight mechanism on adjusting seat, and top tight mechanism includes screw rod, handle and pressure plate, is used for clamping workpiece from multiple directions, the mounting plate with U type opening is equipped with on base both sides to realize quick installation and fixed, and the base edge is equipped with the discharge chute, and the limit ring lower part is equipped with the let -alone slot cooperation and uses the chip removal. The device can realize the clamping operation of multiple points, adjustable, is applicable to the high stability fixation of special-shaped workpiece, overcomes the traditional fixture positioning accuracy poor, poor adaptability, the problem of clamping instability, improves the machining accuracy and adaptability.

The present application relates to the technical field of milling machine, disclose a kind of steel bar end face milling chamfering machine and processing method thereof, including milling machine, cross slide system of milling machine is provided with bearing table, bearing table is slidably provided with slide, and clamping assembly is rotatably installed on slide.The present application can realize the double cooperative clamping of the top and end of steel workpiece, form multidimensional force balance, and the clamping reliability is greatly improved, this double clamping structure can reduce the displacement, shaking or shifting of workpiece during processing, etc., ensure that the relative position of milling cutter and workpiece end face is always accurate, significantly reduce production safety hazard;And the pressure arm is designed with rotary drive, its initial state can be rotated to the position away from the workpiece placement area of bearing table, will not block the workpiece taking and placing path, when feeding, operator does not need to avoid pressure arm component additionally, can directly place workpiece in bearing table preset position stably, significantly shorten the feeding preparation time, improve the efficiency of single processing cycle.

The utility model discloses a lightning arrester tensile test device, specifically relates to lightning arrester detection technical field, including base, the base upper end front part rotationally connected with glass cover, the base upper portion is fixedly connected with two mobile mechanisms, two mobile mechanisms are close to each other's one end all fixedly connected with two clamping mechanisms, two clamping mechanisms are far from each other's one end all slidingly connected with the limiting mechanism, the base upper portion is fixedly connected with the support mechanism. The utility model discloses a lightning arrester tensile test device is provided with clamping mechanism, adopts the combination of '' chuck + connecting rod + telescopic rod '', through replacing different specifications chuck, can adapt to various size lightning arrester, and the semicircle block and spring no.

The utility model discloses a highly integrated four-axis machining clamp which comprises a machining clamp base, a fitting plate is installed on the machining clamp base, first clamp assemblies are arranged on the outer walls of the two sides of the machining clamp base, and second clamp assemblies are further arranged on the outer walls of the two sides of the machining clamp base. An integrated workpiece is placed on the machining clamp base and installed and fixed through an attaching plate, a first clamp assembly and a second clamp assembly. The two first clamp assemblies are symmetrically arranged on the two sides of the base, each first clamp assembly clamps the middle positions of the two sides of the workpiece and is matched with the bottom attaching plate to form a stable three-point positioning structure, clamping force evenly acts on the two sides of the gravity center of the workpiece through the design, and local stress concentration caused by torque deviation in traditional four-corner fixing is avoided.

The invention is suitable for the technical field of chamfering machines, and provides a spinning rubber roller double-station inner chamfering machine which comprises a chamfering table and a discharging part. A clamping part is fixed between the chamfering table and the discharging part. Sliding pieces are slidably arranged on the two opposite side faces of the two supporting boxes in a penetrating mode. A rotating piece is rotationally arranged on the sliding piece; an inner core supporting piece matched with the inner wall of the spinning rubber roller is attracted to the rotating piece through electromagnetism. A lifting piece matched with the sliding piece is arranged on the inner wall of the supporting box in a sliding mode. According to the device, an inner core supporting piece is arranged for supporting from the interior of the spinning rubber roller, meanwhile, the arc-shaped clamping plate is adopted for clamping and fixing from the exterior, the supporting function and the clamping function are separated, the inner core supporting piece is fed into the spinning rubber roller before clamping, the inner core supporting piece is clamped, and the inner core supporting piece is clamped by the arc-shaped clamping plate; the subsequent external clamping force is effectively dispersed, radial deformation of the interior of the spinning rubber roller caused by clamping is prevented, and the structural integrity of the spinning rubber roller is protected.

This utility model relates to the field of chip clamping equipment technology, specifically to a chip disassembly and assembly fixture, comprising: a loading plate, with fixing blocks installed at both ends of the four sides of the loading plate, a first loading groove formed in the middle of the upper surface of the loading plate, a set of second loading grooves formed on the opposite two side walls of the loading plate, and a switch groove formed on the other side wall of the loading plate, and a clamping assembly provided inside the loading plate for clamping the chip to be disassembled or assembled. The purpose of this utility model is to provide a chip disassembly and assembly fixture to solve the problems of poor compatibility, high risk of clamping damage, and low operating efficiency in the prior art.

The utility model relates to a clamping jaw, and belongs to the technical field of part grabbing structures. The device comprises a supporting mechanism, a telescopic mechanism, a bearing mechanism and a clamping mechanism, the fixed end of the telescopic mechanism is connected with the supporting mechanism, the bearing mechanism is connected with the supporting mechanism, and the telescopic end of the telescopic mechanism slidably penetrates through the bearing mechanism; the clamping mechanism comprises a pushing assembly, a plurality of elastic pieces and a plurality of clamping jaws, the pushing assembly is connected with the telescopic end of the telescopic mechanism, the clamping jaws are evenly distributed in the circumferential direction of the bearing mechanism and distributed on the periphery of the pushing assembly, the elastic pieces are arranged between every two adjacent clamping jaws, the first ends of the clamping jaws are hinged to the bearing mechanism, and the clamping jaws are provided with inclined parts. The inclined part enables the middle width of the clamping jaw to be larger than the first end width of the clamping jaw, the elastic piece enables the inclined part to abut against the pushing assembly all the time, and movement of the pushing assembly can push the second end of the clamping jaw to be opened to clamp a workpiece. The clamping jaw has the effect of solving the problem that the stability is insufficient when the clamping jaw clamps a workpiece.

The utility model provides a positioning and pressing jig for processing a fireproof door, which belongs to the field of fireproof door processing equipment and comprises a base, a base plate is connected above the base, an object placing plate is rotatably arranged on the base plate, a clamping cavity is arranged on the object placing plate, and a clamping component is arranged in the clamping cavity. The fireproof door machining device is suitable for machining a fireproof door when the fireproof door is machined, the fireproof door is placed in the clamping cavity of the storage plate, the supporting plate provides bottom supporting, and the air cylinder drives the L-shaped clamping plate to conduct clamping. The height of the device is adjusted through a hydraulic turning plate structure, and the angle is adjusted by rotating the storage plate through cooperation of the annular sliding groove and the connecting rod, so that the requirements of different specifications and procedures are met, and multidirectional stable clamping and convenient operation are achieved.

This invention relates to the field of oil extraction equipment technology, and discloses a clamping device and a metal drill tong. The clamping device includes: a frame assembly; two clamping components symmetrically arranged on the frame assembly, each clamping component including a connecting component and a clamping arm, the clamping arm being hinged to the frame assembly via the connecting component; and a drive component disposed on the frame assembly, the drive end of which is simultaneously drivenly connected to the connecting components of the two clamping components. This invention, by setting the clamping components and drive component on the frame assembly, allows the two clamping components to continuously move along a symmetrical clamping trajectory until they contact the workpiece when the clamping device clamps it, resulting in higher clamping accuracy. Furthermore, since the clamping center lines of the two clamping components coincide with the axis of the metal drill tong body, the clamping components can also center and straighten the workpiece during clamping, correcting any deviations in the workpiece's placement.