57results about How to "Stable clamping force" patented technology

The utility model relates to the technical field of tractor equipment, and discloses a width-adjustable amplitude-variable crawler-type tractor which comprises a box body, an upper crawler belt structure and a lower crawler belt structure, an operation panel is arranged on the front face of the box body, a rectangular plate is fixedly installed on the front face of the box body, an adjusting mechanism is arranged in the box body, and the upper crawler belt structure and the lower crawler belt structure are arranged in the box body. A limiting mechanism is arranged in the rectangular plate, the distance between the upper crawler belt structure and the lower crawler belt structure can be adjusted, traction and transportation of to-be-dragged objects of various thicknesses are facilitated, and when the upper crawler belt structure and the lower crawler belt structure are abraded for a long time and clamping force is insufficient, the clamping force is not enough. The upper crawler belt structure and the lower crawler belt structure can still keep stable clamping force under the action of the rolling wheels, slipping is avoided, stability is kept, the limiting column A and the limiting column B can be adjusted according to adjustment of the upper crawler belt structure, a traction object is limited up and down, the distance between the two limiting columns C is adjustable, and the space between the two limiting columns C is adjustable. Limiting can be achieved by adjusting according to the width of an object to be dragged.

The invention relates to the technical field of constructional engineering, and discloses a construction site steel structure welding device for constructional engineering, which comprises a base, the outer wall of the base is fixedly connected with the outer wall of a sliding table, the outer wall of the sliding table is fixedly connected with one end, close to the sliding table, of a top plate, and the bottom of the top plate is fixedly connected with the top of a welding gun. According to the angle welding device, the locking assembly is arranged, the rotary table is adjusted to the preset angle through the locking assembly and locked, the situation that a corresponding included angle cannot be kept due to thermal stress after angle welding of a steel structure is conducted is prevented, and the steel structure is stably kept at the preset angle; according to the construction site steel structure welding device, the steel structure is kept stable in the welding process and after welding, meanwhile, stable clamping force prevents the situation that due to the fact that the steel structure is long, the two sides fall down, the welding position deviates, and welding is not standard, and the construction site steel structure welding device used for constructional engineering can be normally used.

The utility model discloses a high-precision servo press with good positioning effect, which belongs to the technical field of servo presses, and comprises a box body, a stamping component is arranged in the box body, the stamping component comprises a servo motor, a moving plate and two groups of clamping plates, the top of the servo motor is fixedly mounted on the inner wall of the top of the box body, and the moving plate is fixedly mounted on the inner wall of the top of the box body. A screw rod is fixedly mounted at the output end of the servo motor, a sleeve is in threaded connection with the outer side of the screw rod, a pressing block is fixedly mounted at the bottom end of the sleeve, the moving plate is slidably mounted on the outer side of the sleeve, supporting rods are fixedly mounted on the two sides of the top of the pressing block, and fixing plates are fixedly mounted on the tops of the two supporting rods; springs are fixedly installed at the bottom ends of the two sets of fixing plates, the other ends of the two sets of springs are fixedly installed at the top of the movable plate, the pressing block is pressed downwards to drive the clamp to clamp a workpiece, the better positioning effect can be achieved in the press fitting process of the high-precision servo press, and the production efficiency and the product quality are improved.

The clamping mechanism comprises a chuck body and four sets of air cylinders evenly arranged in the circumferential direction, and piston rods of the air cylinders are arranged in the radial direction of the chuck and fixedly installed at the front end of the chuck body. A clamping jaw assembly is fixedly installed on the cylinder body, an organ protective cover is connected between the cylinder body and the end of the piston rod, two synchronous gear rings are coaxially arranged at the rear end of the chuck body, and the cylinder bodies of the two adjacent air cylinders are in transmission connection with the two synchronous gear rings correspondingly. And therefore, the two groups of symmetrically arranged air cylinders synchronously act through the same synchronous gear ring. According to the embodiment, the power source is externally arranged, the internal space of the chuck is saved, meanwhile, later maintenance is facilitated, the power source is directly connected with the clamping execution end, transmission loss is avoided, larger clamping force is achieved, meanwhile, a sliding block structure is avoided, and the phenomenon of sliding clamping stagnation is eradicated.

The utility model discloses an injection molding post-processing device for automobile plastic parts, which comprises a bottom plate and an operation table, one end of the upper part of the bottom plate is fixedly connected with a cylinder, one end of the cylinder is fixedly connected with a support frame, one end of the side surface of the support frame is fixedly connected with an adjusting cabinet, one end of the outer side of the adjusting cabinet is fixedly connected with a motor, and one end of the inner side of the adjusting cabinet is rotatably connected with a screw rod; the other end of the inner side of the adjusting cabinet is fixedly connected with a sliding plate, the outer side of the sliding plate is slidably connected with a sliding block, and one end of the sliding block is fixedly connected with a movable base; the motor drives the lead screw to rotate so as to drive the movable base to drive the L-shaped cutter to move left and right, so that the outer cutting edge and the inner cutting edge inside and outside the L-shaped cutter cut or trim the side faces and the top faces of multiple sets of parts, and it is guaranteed that the surfaces of the parts are smooth and neat; the outer cutting edge and the inner cutting edge can well repair the surfaces of the parts clean when the L-shaped cutter moves, and the requirement for high-precision machining is met.

The workbench comprises a base, a fixing block is fixedly installed on the upper surface of the base, guide rods which are symmetrically distributed are fixedly connected to the upper surface of the fixing block, a lower clamping block is fixedly installed in the center of the upper surface of the fixing block, and a self-locking clamping device is arranged above the fixing block. A self-locking clamping device is fixedly installed on the upper surface of the base and comprises a pressing plate, the outer surface of the guide rod is sleeved with the pressing plate in a sliding mode, and a controller used for controlling the self-locking clamping device is fixedly installed on the upper surface of the base. The clamping device can effectively adapt to racks with different thicknesses and provide stable clamping force when clamping the racks with different thicknesses, so that the clamping device can be automatically locked after clamping a workpiece, additional continuous energy input is not needed, and higher safety and stability are provided.

The utility model discloses a split type valve seat quick replacement clamp, it includes a C shaped frame, the C shaped frame has an opening for accommodating valve body, a drive mechanism is installed on the C shaped frame, a briquetting assembly is connected with the output of drive mechanism, the drive mechanism can drive briquetting assembly moves along the direction perpendicular to C shaped frame opening plane, at least two clamping jaws, symmetrically, slidably set up on the C shaped frame, the inside of clamping jaw is equipped with the snap -fiting part for with valve seat external structure matches, a linkage mechanism connects briquetting assembly and clamping jaw, is used for with briquetting assembly's linear motion conversion is the radial synchronous clamping or loosening movement of clamping jaw. The utility model can realize split type valve seat's quick, laborsaving, accurate and lossless centering accurate and dismounting, effectively improves maintenance efficiency, guarantees the operation safety.

The multi-point distribution type horizontal clamping fixture comprises a base, the top of the base is connected with a machining table, two sets of sliding grooves are formed in the center of the top of the machining table, moving blocks are connected into the sliding grooves in a sliding mode, and clamping blocks used for clamping the thin plates are arranged at the tops of the moving blocks. A plurality of clamping rods are arranged in the clamping block, springs are connected to the ends, located in the clamping block, of the clamping rods, one ends of the springs are fixed into the clamping block through fixing pieces, the fixing pieces comprise bolts and fixing plates, the bolts are rotationally connected into the clamping block, one ends of the springs are connected with the fixing plates, and the ends, located in the clamping block, of the bolts are in threaded connection with the fixing plates. The clamp is connected with the spring through the bolt and the fixing plate, the bolt is rotationally connected into the clamping block and is in threaded connection with the fixing plate, when the elasticity of the spring is reduced, the fixing plate and the spring can be pulled out of the clamping block only by screwing the bolt, the spring can be conveniently and independently replaced, the maintenance cost is reduced, and the production efficiency is improved.

The invention relates to the technical field of clamping mechanisms, and discloses a sheet metal clamping air cylinder in order to solve the technical problems that an existing product lacks a self-locking function, stability of a workpiece is difficult to keep, and accurate clamping is difficult to achieve, the sheet metal clamping air cylinder comprises an upper cylinder body and a lower cylinder body, a piston is arranged in the lower cylinder body, and the piston is fixedly connected with a piston rod; a first air port and a second air port are formed in the upper portion and the lower portion of the lower cylinder body respectively, a connecting plate is fixedly connected to the lower cylinder body, a piston rod penetrates through the connecting plate and extends into the upper cylinder body, a clamping arm partially located in the upper cylinder body is arranged, a clamping screw is installed at the top of the clamping arm, and a smooth protruding structure is formed at the bottom of the clamping arm. A shaft hole and a crescent hole are formed in the smooth protruding structure, the clamping arm can rotate around a rotating shaft arranged in the shaft hole, and a shaft sleeve fixedly connected with the piston rod is arranged in the crescent hole. A clamping machine is self-locked, a set screw is matched with a clamping screw, so that the clamping position is rotationally adjustable, adjustment can be carried out according to different positions of clamping points, and field adjustment is facilitated.

This utility model discloses a sheet metal clamping fixture with upper and lower clamping and side limiting, relating to the field of sheet metal clamping technology. It includes a worktable and a mounting frame mounted on the worktable. The mounting frame consists of a vertical plate and a horizontal plate. The vertical plate is mounted on one side above the worktable, and the horizontal plate is positioned above the vertical plate and directly above the worktable. A sheet metal placement structure is also provided above the worktable. The mounting frame is equipped with a sheet metal fixing structure and a sheet metal limiting structure. This application provides a comprehensive and stable clamping force for sheet metal parts by combining upper and lower clamping with side limiting. This clamping method prevents displacement, deformation, or shaking of sheet metal parts during processing, ensuring the stability of the processing and the reliability of processing quality, and reducing the scrap rate.

The application provides a power cable damage detection device, which comprises a conveying mechanism, a twisting mechanism, a camera mechanism and a driving mechanism; the conveying mechanism comprises a rack, a chain plate and a chain wheel; the twisting mechanism comprises a clamping assembly and a control assembly; a plurality of clamping assemblies are installed on the chain plate, the control assembly controls three or more clamping assemblies to clamp the cable, and controls the clamping assembly in the middle to rotate after clamping, so as to clamp the two ends of the cable to be detected and reset after twisting the middle part; the camera mechanism collects images on the twisted cable; after the camera mechanism completes the collection, the control assembly controls the clamping assembly to separate from the cable; and the driving mechanism drives the cable to move linearly. The twisting action actively amplifies the damage position on the cable through physical deformation, converts the subtle defects that can be recognized only by high-precision equipment into obvious features that are easy to capture by the camera mechanism, reduces the precision requirement of the image recognition system, and greatly improves the sensitivity of the damage detection.

The utility model relates to the technical field of building keel and discloses a steel baking varnish keel main keel and auxiliary keel connecting structure, and the connecting structure fixed assembly includes the fixed bolster, the fixed bolster is fixedly connected in the lateral wall of main part board, the bottom fixed mounting of fixed bolster has the connecting seat, the bottom fixed connection of connecting seat has the fixed plate, and the surface of fixed plate is penetrated by adjusting bolt, and the top fixed connection of adjusting bolt has the fixed clamp. The utility model discloses discarding the welding connection mode, and utilizing connecting structure fixed assembly and keel connection fixed assembly cooperation. Through screwing adjusting bolt, the connecting position of connecting structure and ceiling or frame can be flexibly adjusted, and the relative position of main auxiliary keel can be easily changed by rotating the adjusting handle, the accurate adjustment of installation position is realized, the needs of different construction scenes are satisfied, the defect that the installation position is fixed is overcome, and the flexibility and accuracy of construction are improved.

The invention discloses modular existing beam bending-resistant reinforcing equipment in the technical field of existing beams, which comprises a walking positioning vehicle, a telescopic support is fixedly mounted on the walking positioning vehicle, a fixing plate is fixedly connected to the support, and a reinforcing assembly capable of reinforcing the bending resistance of a beam is arranged on the fixing plate. A certain pouring gap can be reserved between the reinforcing assembly and the beam body, the gap is filled with grouting glue, and the steel plate and the beam bottom cooperatively bear tension through bonding and force transmission. Through cooperation of a limiting block and a limiting hole, precise positioning and fixing of the first sticky steel can be rapidly achieved, the operation efficiency is greatly improved, and meanwhile the situation that the reinforcing effect is affected by deviation of the first sticky steel is avoided; the second sticky steel is designed to be opened and closed in a rotatable mode and is matched with the driving assembly to achieve automatic opening, closing and clamping.

This utility model relates to the field of photovoltaic module technology, and in particular to a material conveying box and a photovoltaic module production system. It includes: a material box base; a material box cover, detachably mounted on the material box base, forming a cavity for containing materials; a linkage component, disposed on the material box cover, with a drive component at its input end and a clamping component at its output end; the drive component drives the clamping component to move linearly via the linkage component to clamp or release materials; and a clamping and holding mechanism, disposed on the material box cover, used to maintain the clamped and fixed state of the clamping component. The continuous resistance provided by the clamping and holding mechanism in this material conveying box ensures that the materials will not loosen, even during long-distance transportation or in bumpy environments, thus guaranteeing the stability of the materials during transportation.

This utility model discloses a machining center fixture for machining forks and connecting rods. A fork clamping device is installed on the lower surface of the bridge plate of the four-axis fixture. The connecting rod clamping device includes a movable clamping module one and a fixed clamping module one, respectively installed at both ends of the upper surface of the bridge plate. The fork clamping device includes a movable clamping module two and a fixed clamping module two, respectively installed at both ends of the lower surface of the bridge plate. This utility model can process multiple workpieces simultaneously, clamping forks and connecting rods on both sides of the bridge plate, greatly improving machining efficiency. This utility model achieves rapid clamping and positioning. Through the design of the sliding plate and T-block, the clamping position can be quickly adjusted to adapt to workpieces of different sizes, making it widely applicable.

The present application belongs to the technical field of aviation piston engine. The present application discloses a kind of cylinder body structure and connecting method of air-cooled two-stroke aviation piston engine, to solve the problem of heat load concentration, aluminum alloy strength decline, cylinder deformation caused by the contact thermal resistance of aluminum alloy cylinder and cylinder cover connection area is too large, in the present application, connecting screw and threaded hole are matched with fine thread to increase contact area, reduce contact thermal resistance and enhance heat conduction performance;Threaded hole counterbore is treated to reduce the amount of residual gas in the hole, reduce the obstruction of gas to heat conduction;Connecting anti-loosening strictly prohibits the use of thread glue, to avoid local temperature rise. And using TC4 titanium alloy screw material, threaded hole circumferential uniform arrangement and enough connection depth and other supporting design, systematically make the heat of connection area conduct and dissipate efficiently, avoid the strength decline caused by heat load concentration, improve the anti-deformation ability of cylinder, ensure that the roundness and cylindricity of cylinder meet the design requirements, the engine performance maintains stable under design condition.

The present invention relates to the field of manipulator technology, and specifically discloses a flexible clamp, including a mounting plate, two groups of clamping assemblies opposite to each other, a pushing assembly for driving each clamping assembly, and a distance adjustment and positioning assembly corresponding to each clamping assembly, wherein the distance adjustment and positioning assembly includes a linear drive mechanism, a distance adjustment slider that is arranged in pairs and assembled on the mounting plate for front and back movement, and a pair of adjustment rods that are assembled on the distance adjustment slider for left and right movement; one end of the adjustment rod is used to push the clamping roller to press the workpiece, and a receiving port for the clamping roller and the workpiece to enter is formed between the paired adjustment rods; the clamping assembly also includes two guide sliders that are assembled on the mounting plate for front and back movement and are distributed front and back, a tensioning rod that is assembled on each guide slider for left and right movement and is fixedly connected to the end of the chain, and an elastic member connected to the guide slider for tightening the chain. The flexible clamp optimizes the position and number of clamping points, and can ensure that the clamping force of the clamp on the workpiece is evenly distributed at multiple points.

The utility model provides a kind of watt-hour meter calibration device with adjustable clamping mechanism, belong to watt-hour meter detection technical field, including bearing mechanism, including fixed frame, the clamping groove being opened in the both sides of fixed frame outer surface, and the sliding block of sliding cooperation with fixed frame outer surface;Locking mechanism, including the button of sliding cooperation with sliding block, and the clamping assembly for watt-hour meter fixedly.The utility model realizes the tool-free quick adjustment and automatic positioning locking of clamping assembly on fixed frame by the cooperation of bearing mechanism and locking mechanism, and user can be unlocked and moved by pressing button, and it is automatically clamped into clamping groove under the action of first spring after release, realizes quick positioning, simultaneously, clamping assembly is driven to move along threaded rod axial by rotating fixed nut, pushes inboard movement of clamping plate, compresses second spring, makes two clamping plates synchronous close, exerts stable clamping force to watt-hour meter, improves the efficiency and use flexibility of calibration operation.

The utility model discloses a solenoid valve pencil welding set, including feed module, discharge module and welding positioning module, the feed module includes slide rail subassembly, first horizontal air cylinder, first drive board and rotary air cylinder, first drive board installs in slide rail subassembly and still with first horizontal air cylinder's drive end fixed connection, rotary air cylinder fixed mounting is at the top of first drive board. The utility model discloses a solenoid valve pencil welding set, overcomes the defect of solenoid valve pencil welding in the prior art and depends on manual, and the positioning is not accurate, and the efficiency is low, and the quality is unstable, realizes the automatic welding operation of solenoid valve body and double pencil, reduces the manual cost, and promotes the welding accuracy and production efficiency.

The utility model discloses a turbine shell polishing device, which relates to the technical field of turbine shell processing, and comprises a box body, a support is fixedly arranged below the box body, a control box is fixedly arranged above the box body, a square opening is formed in a front panel of the box body, a cabin door is hinged in the square opening through a hinge, and the cabin door is connected with the control box. First linear sliding rails are transversely, oppositely and fixedly arranged at the bottom in the box body, a movable fixing structure is arranged above the first linear sliding rails in a sliding mode through sliding blocks, a plurality of sliding rods are arranged on the outer sides of the first linear sliding rails, rodless air cylinders are arranged on the sliding rods in a sliding mode, and movable grinding structures are fixedly arranged on the rodless air cylinders. The movable fixing structure transversely moves on the sliding rail through the first linear sliding rail, and the rodless air cylinder enables the movable polishing structure to move in the vertical direction along the sliding rod.

A salt spray aging test device and method capable of preloading mainly include a shell, in which multiple groups of sample clamping and loading mechanisms are arranged, each group of sample clamping and loading mechanisms includes support plates on both sides of the front and rear, a guide rod is fixed between the two support plates, a sliding seat is provided on the guide rod for sliding forward and backward, a rotating plate is rotatably installed on each sliding seat, one end of the rotating plate is hinged to a pressure plate, and the lower end of the pressure plate is directly opposite to the support plate on the sliding seat; the other side of the rotating plate is connected to a pull rope, and the left and right pull ropes are connected to a suspension rod after passing through the guide wheel group on the support plate. The salt spray aging test device and method capable of preloading provided by the present invention enable the sample to obtain continuous and stable tension while being clamped, which is more in line with the actual use scenario.

The utility model relates to the technical field of milling cutters, in particular to an alloy milling cutter sharpening clamp which comprises a U-shaped cutter rest, a sliding groove is formed in the U-shaped cutter rest, a plurality of sets of sliding blocks are arranged in the sliding groove in a sliding mode, a locating piece is fixed to the set of sliding blocks located on the rearmost side, and movable protruding plates are fixed to the other sets of sliding blocks. Meanwhile, a fixed convex plate is fixed to the position, located at the front end of the sliding groove, of the U-shaped tool rest, the fixed convex plate and the multiple sets of movable convex plates are located in the same plane, threaded holes formed in the fixed convex plate and the movable convex plates are internally in threaded connection with tightening bolts, and the positioning piece and the U-shaped tool rest are combined; the position of the positioning piece can be changed on the U-shaped tool rest, and meanwhile the position of the tightening bolt can be adjusted correspondingly.

The utility model relates to the technical field of electrical connection spare, concretely relates to a socket plug sleeve with good contact effect, including bottom piece, the symmetric setting of bottom piece inserts piece, and the support section, the bending section and the contact section are formed to the insert piece through multiple times bending, and the contact section is provided with a plurality of notches parallel to the insertion direction, and the contact section is divided into a plurality of contact pieces. The contact piece includes the main piece and the vice piece of different width, and the inward side is bent to form the arc contact part. The utility model discloses through the design of piece by piece and makes each contact piece independent to fit the plug electric contact piece, and the point contact is converted into the multi-point distributed contact, and the line contact structure of arc contact part is matched, and the contact area is significantly expanded, and the contact resistance and the heating risk are reduced, and the poor contact problem caused by point contact is effectively solved, and the electric safety and reliability are improved.

The utility model relates to the technical field of upholstery production, in particular to a clamping manipulator for automotive upholstery production, which comprises a mechanical arm, an air cylinder is fixedly arranged at the execution end of the mechanical arm, a fixing plate is fixedly arranged on one side, far away from the mechanical arm, of the air cylinder, and two clamping jaws are hinged to the fixing plate. The output end of the air cylinder penetrates through the fixing plate and extends to the position between the two clamping jaws, and the output end of the air cylinder is provided with a control assembly used for controlling the clamping jaws to be opened and closed. By arranging the limiting assembly, the control assembly, the self-locking assembly and the unlocking assembly, when a workpiece is clamped, a lock hook is inserted into a locking sleeve and hooks a lock tongue, the position of a driving plate can be locked, a clamping arm keeps stable clamping force, the workpiece is prevented from loosening or falling off, safety in the operation process is guaranteed, meanwhile, the locking sleeve limits the maximum stroke of the driving plate, and the service life of the driving plate is prolonged. The workpiece can be prevented from being damaged by excessive clamping, the integrity and quality of the workpiece are protected, and damage caused by too large force of the clamping jaw is reduced.

The application discloses a steel arch structure for a mine tunnel and an assembling method thereof, and belongs to the technical field of mine tunnel reinforcement. The steel arch structure comprises a steel arch, an inverted arch and a connector. The steel arch is composed of multiple steel arch segments, and the connector is arranged at the joint between adjacent segments and between the segment and the inverted arch. The connector comprises a steel base, elastic claw arms symmetrically fixed on both sides of the base, a rectangular insertion plate vertically fixed in the middle of the base and a cam locking device. The cam locking device compresses the elastic claw arms inward by means of an eccentric wheel to realize quick connection between the segments. The assembling can be completed by pushing the locking handle by the mechanical arm, welding or bolt fastening on site is avoided, and the construction efficiency and safety are remarkably improved.

A fluid pressure cylinder (100) fixed to a base body (1) includes: a cylinder main body (10); a first piston (21) and a second piston (30) each reciprocally movable with respect to the cylinder main body (10); a first cylinder chamber (40) that drives each of the first piston (21) and the second piston (30) to a fixation side; a second cylinder chamber (50) that drives each of the first piston (21) and the second piston (30) to a fixation-release side; and an engagement portion (60) that is able to be located on an inner peripheral side of an annular member (200) and that is able to switch between a first state and a second state in response to a reciprocal movement of each of the first piston (21) and the second piston (30), the first state being a state in which the annular member (200) is not pressed, the second state being a state in which the annular member (200) is pressed to the base body (1) side. The first piston (21), the first cylinder chamber (40), the second cylinder chamber (50), and the second piston (30) are provided to be arranged side by side along a first direction from the base body (1) side toward the fixation-target object (2) side in an order of the first piston (21), the first cylinder chamber (40), the second cylinder chamber (50), and the second piston (30).

The utility model discloses a positioning mechanism for aluminium profile cutting processing, including mounting bracket, the middle part of mounting bracket upper end is equipped with the placing plate, the inside slide coupling of mounting bracket has the adjustment frame of left and right symmetry, still include positioning mechanism, positioning mechanism: it includes push board, support rod, guide rod, trapezoidal slide, support plate, support, roller and spring, the left and right symmetry guide rod of two sides of the front and back of adjustment frame upper end is fixedly connected respectively, and the trapezoidal slide is slidably connected between two guide rods adjacent transversely respectively, and the opposite end of trapezoidal slide is fixedly connected with support rod respectively, and the opposite end of support rod is fixedly connected with push board respectively, and push board all are located the outside of adjustment frame, and this positioning mechanism for aluminium profile cutting processing can be accurate positioning to different specifications aluminium profile through simple mechanical structure, and the clamping force is more stable, prevents the slight displacement of aluminium profile in the cutting process, avoids the influence cutting accuracy of aluminium profile.

The present invention discloses a special fixture for processing aircraft seat slide rails, comprising a base, a plurality of clamping units are arranged on one side of the base in parallel and at equal intervals; the clamping units are slidably connected to the base through a sliding mechanism; the base comprises a workbench, a positioning platform is arranged on the upper surface of the workbench; the clamping unit comprises a column, a cylinder assembly is connected to the top of the column, a clamp assembly is connected to the lower end of the cylinder assembly, and the clamp assembly moves up and down in a direction perpendicular to the positioning platform under the drive of the cylinder assembly; the sliding mechanism comprises a slide rail and a sliding sleeve nested with the slide rail; the slide rail is fixedly connected to the base, and the sliding sleeve is arranged close to the lower end of the column. The present invention adopts a telescopic cylinder as the power source of the clamping unit, which is not only simple to clamp, but also has a stable clamping force and is easy to operate, and solves the characteristics of easy deformation of profiles and difficult correction of clamping. By using a pad and a positioning platform that are compatible with the profile shape of the part to be processed, the part to be processed can be firmly fixed.

The present invention discloses a locking device for local pressurization of anti-gravity casting and an anti-gravity casting device, comprising a side mold locking part and an upper mold locking part, wherein the side mold locking part is fixed to the side mold template or frame of the anti-gravity casting device through a connecting component, and comprises a locking drive mechanism, a locking force transmission mechanism and a side mold locking block, wherein the locking force drive mechanism is provided with a locking force transmission mechanism, and the locking force transmission mechanism is connected to the side mold locking block, wherein the side mold locking block has an inclined surface, and the upper mold locking part is provided with an inclined surface adapted to the shape of the side mold locking block. When the present invention is applied to a multi-liter liquid pipe anti-gravity wheel casting molding device with a local pressurization device, a stable locking force can be provided during local pressurization, thereby significantly improving safety.

The utility model provides a special fixture for drilling and milling a hole with a built-in oil cylinder, and belongs to the technical field of oil cylinder fixtures. The problem that in the prior art, the special-shaped positioning capacity of shaft type outer circle drilling is insufficient is solved. The clamp comprises a clamp body, a conical block, an oil cylinder cavity and a sealing plate, the clamp body is of a T-shaped cylindrical structure, a conical cavity and an installation cavity are formed in the clamp body and communicated with each other, the conical block is installed in the conical cavity, a matching ring body is formed at one end of the conical block, and a piston push rod is formed on one side of the oil cylinder cavity. The piston push rod extends into the matching ring body to enable the oil cylinder cavity to be connected with the conical block, an oil cavity is formed in one end of the oil cylinder cavity, a sealing ring is formed on the outer side of the oil cavity, a connecting shaft is formed in the center of one side of the sealing plate, a sealing groove is formed in the connecting shaft, the connecting shaft extends into the oil cavity, and the sealing ring is connected with the sealing groove in an attached mode. The buffer device has the advantages of being high in adaptability, good in buffer performance and convenient to disassemble.