80results about How to "Reliable clamping force" patented technology

The invention relates to a machine and turntable clamp for a four-axis processing center. The clamp comprises a clamp bottom plate (8), a tail seat (2), a dividing head (9), an oil / gas path distributor component (1), L-shaped plates (4), a bridge plate (7) and clamp location clamping units, wherein the tail seat (2) and the dividing head (9) are fixedly arranged on the clamp bottom plate (8); the oil / gas path distributor component (1) is arranged on the outer side face of the tail seat (2); two L-shaped plates (4) are oppositely arranged and are respectively connected with the tail seat (2) and the dividing head (9) by a transition plate (3); two ends of the bridge plate (7) are respectively connected with the L-shaped plates (4); a plurality of clamp location units are provided and are uniformly spaced and fixed on the bridge plate (7) in sequence. The machine and turntable clamp has the advantages that a modular design and a ball lock location system are used for realizing fast changing the clamp when the type of a production line is changed; hydraulic clamping is used, so that a reliable clamping force is provided; an airtight detection technology and a fast assembling / disassembling limit block are used, so that an error proofing function is available.

The invention relates to the technical field of fruit processing equipment and especially relates to a machine for automatic hole opening and juice extraction of a coconut, and a method for the hole opening and juice extraction. The machine for the automatic hole opening and juice extraction of the coconut provided by the invention comprises a supporting tray mechanism and at least one set of clamping mechanism and hole opening cutter, wherein each set of clamping mechanism and hole opening cutter are coaxially disposed on two sides of the supporting tray mechanism and can be moved relatively along the axis; and each clamping mechanism is used to clamp and fix the coconut on the supporting tray mechanism, and the hole opening cutter is inserted into the coconut for synchronous hole opening and juice extraction of the coconut. The machine and method for the automatic hole opening and juice extraction of the coconut have the advantages that the juice extraction operation can be executed automatically during the hole opening; operation processes are simplified; the structure is simple; and production efficiency is increased.

The invention discloses a light-type full-hydraulic drilling machine for underground drilling of a coal mine. The light-type full-hydraulic drilling machine comprises a stander, a drilling rod, a water braid, a guide rail, a propelling hydraulic cylinder, a hydraulic clamp and a drill power head, wherein the hydraulic clamp comprises a clamp base, a supporting seat, a clamping hydraulic cylinder and a clamp clamping tile; the water braid comprises a water braid shell, a water braid shaft, a water braid hollow shaft, two anti-abrasion ring, an isolating ring, a front end cover, a rear end cover and an anti-abrasion sealing ring; the drill power head comprises a speed reduction box body, a connection frame, a gear shaft, a hollow stepped shaft, a hydraulic motor, a spring mounting seat, a spring limiting seat, an end face check ring, a gear, a disk-type spring group, a power head clamping tile and a clamping hydraulic cylinder. The light-type full-hydraulic drilling machine is compact in structure, convenient and low in cost; the energy consumption is reduced, the power transmission efficiency is improved, and the clamping force on the drilling rod is stable and reliable; the service lives of the anti-abrasion sealing ring and the water braid shaft can be prolonged, the replacement trouble is reduced, the construction progress and safe production are guaranteed, vibration of the drilling machine is reduced, and the drilling rod is prevented from being broken.

The invention discloses a symmetric spatial three-dimensional micro manipulator with a three-stage motion amplifying mechanism. The micro manipulator is small in size, compact in structure, stable andreliable in clamping force and high in movement precision. The micro manipulator is composed of a base and a plurality of amplification clamping modules, wherein each amplification clamping module comprises a piezoelectric ceramic driver, a bridge type displacement amplification mechanism, two lever displacement amplification mechanisms, a Z-shaped beam displacement amplification mechanism, two flexible guide mechanisms and a clamping jaw; the piezoelectric ceramic driver is arranged between the base and the movable end of the bridge type displacement amplification mechanism; and the piezoelectric ceramic driver drives the movable end of the bridge type displacement amplification mechanism, the output end of the bridge type displacement amplification mechanism drives the input ends of thelever displacement amplification mechanisms, the output end of each lever displacement amplification mechanism drives the input end of the Z-shaped beam displacement amplification mechanism, and theoutput end of the Z-shaped beam displacement amplification mechanism is fixedly connected with the clamping jaw. The micro manipulator is compact in structure, stable and reliable in clamping force, low in cost and high in movement precision.

The invention relates to a hydraulic expansion type cutter clamping head. An annular sealed oil chamber is arranged between the expanding wall of the clamping head main body and a clamping head installation hole, wherein, the oil chamber is filled up with special hydraulic oil, the hydraulic oil is uniformly transmitted to each part of the sealed oil chamber, a hole is arranged on the clamping head main body, the hole is connected with the oil chamber though oil circuit, one end of the hole is connected and matched with a pressurization bolt, the expanding wall of the clamping head installation hole has well elasticity, and the required expanding quantity is produced when the oil pressure reaches a setting point. The inner wall of the oil chamber expands uniformly and symmetrically along the radial direction and the tightness value of the cutter is added; when the pressurization bolt is loosened, the oil pressure inside the oil chamber falls back, the inner wall of the clamping head installation hole returns to the original diameter affected by elastic-restoring force and loosen the cutter. The invention has the advantages that the clamping return precision is smaller than 0.3 micron; the repetitive clamping precision is smaller than 0.2 micron; the clamping force is smooth and reliable; high torque can be transmitted; the clamping system has full-sealed structure and no attrition, and wears well, and the handling of the cutter is simple and convenient.

The invention discloses a panel feeding clamp, which comprises a base for external installation, a pincer seat with one end fixed on the base, a substrate fixed on the base, a compression bar with the middle hinged with the other end of the pincer seat and an external casing. The compression bar is provided with a pincer opening end and a non-pincer opening end, wherein the pincer opening end andthe pincer seat form a pincer opening, and the non-pincer opening end is controlled by a driving mechanism to achieve opening or closing of the pincer opening, the driving mechanism comprises a cylinder arranged on the pincer seat and a spring assembly arranged on the substrate, the cylinder is connected with the spring assembly, the casing is rotatably provided with a C-shaped crank arm, one endof the crank arm is hinged to a connection portion of the cylinder and the spring assembly, the other end of the crank arm is hinged to a connection plate capable of sliding along the surface of the pincer seat, and elasticity effects of the spring assembly drive the connection plate to move close to the compression bar to enable the pincer opening to clamp a panel through the crank arm. When thecylinder applies reverse force on the crank arm, the crank arm drives the connection plate to move far away from the compression bar to enable the pincer opening to open. The clamp force is stable and reliable, has no damage to the surface of the panel, and avoids influences of power-down, decompression or pressure oscillation.

The invention relates to a universal hydraulic tool for shaft bracket machining, and belongs to the technical field of machining equipment. The universal hydraulic tool structurally comprises workbench connecting modules and at least four tool modules arranged on the workbench connecting modules, Y-direction H-shaped grooves are formed in the upper surfaces of the workbench connecting modules, the tool modules comprise locating devices, adjusting devices and clamping devices, the locating devices, the adjusting devices and the clamping devices are arranged on tool supports, and the locating devices are composed of Z-direction locating faces, Y-direction locating faces and X-direction locating faces. The adjusting devices are composed of Y-direction adjusting bolts and X-direction adjusting bolts. The middle portions of the clamping force arms of the clamping devices are movably arranged at the top ends of clamping supports through pin shafts, one ends of the clamping force arms are connected with hydraulic oil cylinders arranged on the tool supports, and clamping press blocks are movably arranged at the other ends of the clamping force arms. The universal hydraulic tool can reduce the investment of new projects in tool machining and lower production cost, meanwhile, a hydraulic system is adopted to clamp machined workpieces, the stability and the reliability of clamping force are ensured, and workpiece clamping efficiency is improved.

The invention discloses a disc spring type wedge-shaped hydraulic chuck for a friction welding machine. The disc spring type wedge-shaped hydraulic chuck comprises a spindle, thrust cylinders, a main ram, an auxiliary ram and clamp blocks and is additionally provided with a thrust seat. The thrust cylinders, the main ram, the auxiliary ram and the clamp blocks are connected with the front end of the spindle, a wedge-shaped oblique plane of the bottom of the main ram is meshed with a wedge-shaped oblique plane of the top of the auxiliary ram, the clamp blocks are mounted at the front end of the auxiliary ram, the thrust seat is of a barrel-shaped structure, flange edges are arranged at the front end of the barrel-shaped structure, a through hole is formed in the center of the rear end of the thrust seat, a flange plate is fixedly connected into the through hole, disc spring structures are arranged in a barrel of the thrust seat and are arranged above flange edges of the flange plate, the tail ends of the disc spring structures are fixed to the inner rear end of the barrel of the thrust seat, the front ends of the disc spring structures are connected to certain portions of the main ram, the certain portions of the main ram are arranged in the barrel of the thrust seat, the auxiliary ram is arranged at the rear of the flange plate, and the thrust cylinders are correspondingly arranged at the rears of the flange edges of the thrust seat. The disc spring type wedge-shaped hydraulic chuck has the advantages that workpieces can be effectively prevented from flying out of the disc spring type wedge-shaped hydraulic chuck, clamping force can be greatly increased, and clamping damage to the workpieces can be effectively prevented.

The invention belongs to the technical field of machine manufacturing and discloses a built-in hydraulic clamping chuck used for a spline cold rolling machine tool and an assembly machine. The built-in hydraulic clamping chuck comprises a flange positioning installation component, an axial positioning radial elastic clamping component, a connecting component and a movable center component. The movable center component is located at the central part of the built-in hydraulic clamping chuck; the left end of the movable center component is provided with the axial positioning radial elastic clamping component; the flange positioning installation component is arranged outside the left end of the movable center component; the flange positioning installation component is in threaded screwed connection with the axial positioning radial elastic clamping component by the connecting component; the connecting component is located outside the right end of the chuck. According to the built-in hydraulic clamping chuck disclosed by the invention, not only can accurate axial positioning be realized but also the uncertainty of the strength of a clamping force can be eliminated by using hydraulic clamping. The clamping force is stable and reliable. Moreover, the built-in hydraulic clamping chuck has the advantages that the structure is compact, the occupied length of a machine tool slide guide is small, and the processing range of the machine tool is broadened. The built-in hydraulic clamping chuck is easy to manufacture and install, and is very good in use value.

The invention discloses a laser transmission welding system and method, and relates to the field of laser welding. The system comprises a laser emitter, a vacuum clamping system and a control system.The vacuum clamping system comprises a coordinate platform, a clamping device and a workpiece system. According to the laser transmission welding system and method, lasers are adopted as energy, and the sealing performance of an inner cavity of the vacuum clamping device is guaranteed through a sealing ring, a sealing gasket and a sealant; a sealing cavity of a box body is vacuumized to generate negative pressure in the clamping device, a piston rod is driven through the inner and outer pressure difference of the box body to apply clamping force to the workpiece system, and accuracy of the clamping force is controlled through a sensor-computer-relay; and laser transmission welding between similar or dissimilar thermoplastic plastic and metal is achieved, and welding quality is improved.

The invention discloses a pipe bending device. The pipe bending device comprises a pipe bending mechanism and a profiling mechanism. The pipe bending mechanism comprises a pipe bending driving assembly and a pipe bending assembly, and the pipe bending assembly is arranged on the pipe bending driving assembly. The profiling mechanism comprises two profiling assemblies. The two profiling assembliesare arranged on the two sides of the pipe bending driving assembly. The pipe bending assembly comprises a bending die frame, a bending die part, a die clamping Z-axis moving part and a die clamping X-axis moving part. The bending die frame is rotationally arranged on the pipe bending driving assembly through a gear shaft. The die bending part is arranged on the bending die frame. The die clampingZ-axis moving part is arranged on the bending die frame in a sliding manner. The die clamping X-axis moving part is arranged on the die clamping Z-axis moving part, and is movably connected with the bending die part. Each profiling assembly comprises a profiling Z-axis moving part, a profiling X-axis moving part and a profiling Y-axis moving part. The pipe bending device is simple in structure, and reliable and stable in clamping force, and with the pipe bending device, when a pipe is bent to be of a complex shape, bent parts of the pipe do not interfere with a pipe bender, and the quality ofpipe bending is improved then.

The invention relates to a power socket with an automatic-rotating contact copper sheet, which is characterized in that: a rotary cavity in the socket rotates freely according to the insertion directions of different flat plug copper sheets, thereby enabling a guide contact copper sheet in the rotary cavity to better suit the flat plug copper sheets in the aspects of direction and space; a copper sheet reset spring provides support and elasticity supply functions for the guide contact copper sheet, and does not bear flowing current; a contact point of the copper sheet reset spring is movable, so that the guide contact copper sheet can rotate vertically and contacted and attached with the flat plug copper sheets with a larger area; and a conductive cord is electrically jointed with the guide contact copper sheet in a compression manner to bear the flowing current.

The invention discloses a four-claw clamp and three-claw clamping system for a lathe, which mainly includes a lathe. The lathe is connected with a four-claw chuck, and the end of the four-claw chuck is connected with a three-claw chuck. Compared with the prior art, the present invention has the following advantages and beneficial effects: stable and reliable clamping force can be provided; the cumbersome process of disassembling and installing the four-jaw chuck is eliminated, and production input cost is saved.

The invention discloses a sliding type positioning abrasive tool, which comprises a straight-angle U-shaped base, wherein two sides of the straight-angle U-shaped base are provided with connecting troughs; the horizontal surface of the straight-angle U-shaped base is provided with rectangular moving troughs; the rectangular moving troughs are arranged in a 2*2 square; two parallel rectangular moving troughs are provided with positioning blocks; the positioning blocks are connected with the straight-angle U-shaped base through screws of which the bottom is provided with a bracket. The invention aims to provide the sliding type positioning abrasive tool, and the abrasive tool is positioned by moving the positioning blocks in the rectangular moving troughs mainly in an abrasive tool processing process.

The invention discloses a deep sea deformation gap automatic compensation clamper. The deep sea deformation gap automatic compensation clamper comprises water bag rubber; a support cylinder barrel anda guide cylinder barrel are relatively mounted in the water bag rubber; a water bag front cover is mounted at the end part of the support cylinder barrel through locking screws, and a water bag backcover is mounted at the end part of the guide cylinder barrel through fastening pieces, so that water bag cavities are formed in the support cylinder barrel and the guide cylinder barrel; a water cylinder barrel is mounted at the back end of the water bag back cover; a back end cover is mounted at the end part of the water cylinder barrel through fastening pieces; a piston is mounted in the watercylinder barrel; a piston rod extends out from the middle part of the piston; and the piston rod penetrates through a through hole at the middle part of the water bag back cover. The deep sea deformation gap automatic compensation clamper further comprises a pressure-resistance barrel; and an input end of the pressure-resistance barrel communicates with the water cylinder barrel through a balancevalve. The deep sea deformation gap automatic compensation clamper compensates deformation gaps without needing external power sources, is wide in gap compensation range, can provide stable clamping force, and is stable and reliable in work.

The invention discloses a machine tool clamping mechanical chuck capable of being switched between manual operation and automatic operation. The machine tool clamping mechanical chuck comprises a mechanical chuck mechanism and a manual-operation and automatic-operation switching mechanism. The manual-operation and automatic-operation switching mechanism is arranged at one side of the mechanical chuck mechanism. The manual-operation and automatic-operation switching mechanism comprises a switching mechanism support, a double-head air cylinder, a lifting gear shaft, a long-column-shaped gear, adriving gear and a pneumatic motor. The two ends of the double-head air cylinder are fixed to the switching mechanism support. The lifting gear shaft is fixedly connected with a cylinder body of the double-head air cylinder through a connecting support. The long-column-shaped gear is fixed to one end of the lifting gear shaft. The driving gear is engaged with the long-column-shaped gear, arrangedon the pneumatic motor and driven by the pneumatic motor. The mechanical chuck mechanism is connected with the manual-operation and automatic-operation switching mechanism and driven by the manual-operation and automatic-operation switching mechanism. By means of the machine tool clamping mechanical chuck, automatic clamping and electronic control are achieved; and meanwhile, the clamping force can be controlled.

The invention provides an approach rail clamp, a rail withdrawal guiding and levering bogie and a long-rail transport bogie unit. The approach rail clamp comprises a first clamp, a second clamp and a hydraulic cylinder, each of the first clamp and the second clamp is provided with a clamping portion used for clamping a steel rail, a driving portion connected with the hydraulic cylinder, and a hinge portion arranged between the clamping portion and the driving portion. The clamping portions of the first clamp and the second clamp are bent inwards to form heaves respectively, and the heaves are clamped in grooves in two sides of the steel rail respectively. The hinge portions of the first clamp and the second clamp are provided with corresponding through holes respectively, bolts penetrate the through holes to be hinged with the first clamp and the second clamp, a piston end of the hydraulic cylinder is connected with the driving portion of the second clamp, and a cylinder end of the hydraulic cylinder away from the piston end is connected with the driving portion of the first clamp. By the aid of the approach rail clamp, the rail withdrawal guiding and levering bogie and the long-rail transport bogie unit, automation can be realized, operation efficiency is improved, and safety risk is reduced.

Provided is a control plane body milling tool, relating to a milling tool. The invention especially relates to the control plane body milling tool for the purpose of solving problems that a middle groove and a left inclined edge of a milled control plane body part are hard to clamp; efficiency is low, and part machining precision cannot be ensured. The control plane body milling tool comprises a bottom plate, two pressing plates and four M10 hexagon socket screws. The bottom plate is a rectangular and is horizontally arranged. A rectangular groove is formed in the middle of the upper surface of the bottom plate. A circular bead is arranged on one side in the rectangular groove. The size of the circular bead of the rectangular groove is matched with the relevant size of the part. Two first screw holes are formed in one side of the upper surface of the bottom plate in the length direction, two second screw holes are formed in the rectangular groove in the length direction. Two mounting gaps are formed in each side edge of the bottom plate. The two pressing plates are arranged in the two first screw holes through two M10 hexagon socket screws, and workpieces are arranged in the two second screw holes through the other two M10 hexagon socket screws. The control plane body milling tool is used for machining the control plane body workpieces.

The invention discloses a clamping mechanism of a planetary gear system. The clamping mechanism comprises a motor, a chassis, a positioning slide block, a gear shaft, the planetary gear system, a rotary disc, a central screw, a connecting rod, a material disc and a clamping guide rod from top to bottom in sequence, wherein the planetary gear system is formed by surrounding a drive gear through a plurality of driven planetary gears; the motor is fixedly connected with the drive gear of the planetary gear system through the chassis; the planetary gear system is arranged on the rotary disc; the first end of the gear shaft is connected with the positioning slide block; the second end of the gear shaft is connected with the driven planetary gears of the planetary gear system, and is fixedly connected with the connecting rod through the rotary disc; the first end of the gear shaft is connected with the positioning slide block; the second end of the gear shaft is connected with the driven planetary gears of the planetary gear system and is fixedly connected with the connecting rod through the rotary disc; the central screw is used for connecting the rotary disc to the material disc; and the clamping guide rod is fixedly connected with the connecting rod through the material disc. The clamping mechanism of the planetary gear system is compact in structure, is simple to mount, is simpleto maintain, and reduces the cost.

The invention provides an eccentric block for a vibration motor. The eccentric block is composed of an eccentric block body (1), an eccentric block periphery (3) and a peripheral clamping device (6) which are arranged on the same plane. The eccentric block periphery (3) is arranged in the middle of the eccentric block body (1), stress grooves (2) are formed in the connection positions of the eccentric block periphery (3) and the eccentric block body (1), and a rotating shaft hole (7) is formed between the eccentric block periphery (3) and the eccentric block body (1). The peripheral clamping device (6) is arranged on the eccentric block periphery (3), and the peripheral clamping device is provided with an opening groove (5) and a fastening bolt hole (4) which is in perpendicular intersection with the opening groove.

The invention relates to a clamping system of a movable main spindle box, in particular to a clamping system of the movable main spindle box for special machine tools for manufacturing thin-long axial parts and a clamping method of the clamping system. The clamping system of the movable main spindle box comprises at least two groups of first clamping oil cylinders which are arranged along the vertical direction of the main spindle box, and at least one pair of second clamping oil cylinders which are arranged along the horizontal direction of the main spindle box, wherein each group of the first clamping oil cylinders comprises at least one pair of clamping oil cylinders; the first clamping oil cylinder and the second clamping oil cylinder are communicated with a high pressure pump station by a first oil inlet / return pipeline and a second oil inlet / return pipeline; and the first oil inlet / return pipeline and the second oil inlet / return pipeline are provided with electromagnetic valve control devices. The clamping method of the clamping system of the movable main spindle box is further provided. According to the clamping device and the clamping method disclosed by the invention, the clamping force along two directions of the main spindle box accurately keeps the locating position of the main spindle box, so that the manufacturing quality and the precision retentivity of parts are improved.

The invention discloses a three-dimensional adjustable clamp for ultrasonic micro-welding imprinting. The three-dimensional adjustable clamp for ultrasonic micro-welding imprinting comprises a substrate used for placing a die and a sample; the substrate is symmetrically provided with four connection plates used for limiting the positions of the die and the sample in a horizontal direction; the connection plates, each of which is provided with a fastening plate used for fixing the positions of the die and the sample in a vertical direction, can perform position adjustment on the substrate according to the sizes of the die and the sample; and each fastening plate can perform position adjustment on the corresponding connection plate according to the sizes of the die and the sample. The three-dimensional adjustable clamp provided by the invention is compact in structure, small in size, low in manufacturing cost, stable and reliable in clamping force and good in fastening effect and can nearly meet the clamping demands of the dies and the samples in any sizes and arbitrary shapes in the ultrasonic micro-welding imprinting process. By adopting the three-dimensional adjustable clamp, theeffective pretightening pressure is provided by the fastening plates, and tight attachment between the sample and the die in the ultrasonic processing process is ensured; and through movement of connection screws in a length direction of slotted holes of the fastening plates, and the three-dimensional adjustable clamp can be adapted to the fastening demands of the dies and the samples in differentsizes.

The invention discloses a rapid clamping device for a pipeline cleaning machine. The rapid clamping device for the pipeline cleaning machine comprises a base plate, a nozzle, a pipe, a pipe clamping assembly, a nozzle sliding assembly and a rapid clamp. The pipe clamping assembly is arranged on the base plate. The pipe is arranged on the pipe clamping assembly. The nozzle is arranged on one side of the pipe clamping assembly and connected with the nozzle sliding assembly. The rapid clamping device for the pipeline cleaning machine further comprises a nozzle adjustment assembly and a clamp sliding assembly. The nozzle adjustment assembly comprises an adjustment lead screw and an adjustment hand wheel. The clamp sliding assembly comprises a clamp sliding block and a clamp sliding rail. The rapid clamp and the nozzle sliding assembly are both installed on the clamp sliding block. The clamp sliding block is installed in the clamp sliding rail. One end of the adjustment lead screw is fixedly connected with the clamp sliding block, and the other end of the adjustment lead screw is provided with the adjustment hand wheel. The rapid clamping device is mainly used for rapidly clamping and locking a connector of a rubber pipe or a hard pipe on the pipeline cleaning machine.

The invention relates to a self-adaptive clamping device for an aircraft engine blade tip process table, which is used for carrying out auxiliary support on the blade tip process table at the blade tip when a blade part is subjected to numerical control milling. When the device is used, along with tightening of the clamping nuts, the three ball head supporting nails on the clamping blocks on the two sides make contact with the two side faces of the blade tip process table one by one, the positions of the ejector rod and the connecting shaft are automatically adjusted, the positions of the ejector rod and the connecting shaft are fixed through the jacking screws, and self-adaptive clamping of the blade process table can be achieved. The problem that when blade tenon root positioning is used for clamping different blade tip process tables according to theoretical positions, clamping stress is introduced to blade tips due to the difference of the positions and the sizes of the blade tip process tables is solved, the device can improve the rigidity of a process system, meanwhile, the clamping stress is not introduced, and unstressed self-adaptive clamping of the blade tips is achieved. The device is simple in structure, convenient to operate and reliable in clamping force, and guarantees precision machining of the blade.

The invention discloses a connection rod mould locking mechanism. According to the connection rod mould locking mechanism, a rack is fixedly provided with a mounting seat (10) and a fixed mould (11), wherein a movable mould (1) is mounted between the mounting seat (10) and the fixed mould (11) by a guide rod (12); the mounting seat (10) is provided with a driving motor (8) and a driving screw rod (7); an output shaft of the driving motor (8) is provided with a driving gear (9); the driving screw rod (7) is provided with a driven gear (6); the top end of the driving screw rod (7) is connected with the center of a cross-shaped connection rod (5); the two ends of the cross-shaped connection rod (5) are respectively connected with one end of a connection rod (3); the other end of the connection rod (3) is connected onto a connection rod (4); one end of the connection rod (4) is connected with the mounting seat (10) and the other end of the connection rod (4) is connected with one end of a supporting connection rod (2); the other end of the supporting connection rod (2) is connected onto the movable mould (1). According to the connection rod mould locking mechanism, the connection rod is used for locking the mould and the bearing force of the connection rod is great so as to provide a reliable mould locking force; no energy is consumed and the production cost is reduced.

To provide a molding machine provided with a tailstock capable of ensuring the rigidity of a connection part of a toggle link mechanism. A molding machine is provided with a tailstock for connection with a toggle link mechanism that causes a movable die plate to advance or retreat. The tailstock has a box shape composed of a front rectangular part and a rear rectangular part formed by integrally connecting together two upper and lower horizontal beams arranged vertically and extending horizontally and two left and right vertical beams arranged to the left and right and extending vertically. The tailstock has tie bar insertion holes formed at four corners of the front rectangular part and the rear rectangular part, and a plurality of plate-shaped toggle link connection parts formed to connect the toggle link mechanism. Built-up portions are provided on lateral surfaces of the toggle link connection parts and between adjacent toggle link connection parts.

The invention discloses a light full-hydraulic drilling rig for underground drilling in coal mines, which includes a frame, a drill pipe, a braid, a guide rail, a propulsion hydraulic cylinder, a hydraulic clamp and a drill power head, and the hydraulic clamp includes a clamp base , support seat, clamping hydraulic cylinder and clamper slips; water braid includes water braid housing, water braid shaft, water braid hollow shaft, two wear rings, isolation ring, front end cover, rear end cover and wear resistance Sealing ring, drilling rig power head includes reduction box body, connecting frame, gear shaft, hollow stepped shaft, hydraulic motor, spring mounting seat, spring limit seat, end face retaining ring, gear, disc spring group, power head slips and clips Tighten the hydraulic cylinder. The invention is compact in structure, easy to implement and low in cost, reduces energy consumption, improves power transmission efficiency, has stable and reliable clamping force on the drill pipe, can prolong the service life of the wear-resistant sealing ring and the braided shaft, and reduces the trouble of replacement , to ensure the construction progress and safe production, reduce the vibration of the drilling rig, and avoid the drill pipe from being broken.

The invention discloses a hydraulic-linked expansion clamp and belongs to the technical field of design of machine tool clamps. The hydraulic-linked expansion clamp comprises a clamp body, an oblique sliding block seat, a coupling screw, a left clamping oblique block, a right clamping oblique block, a clamp cover, a belleville spring, a pull rod, a pull rod thread, a connecting disc, a screw, a positioning pin and a workpiece. The clamp body is fixed to the connecting disc through the screw and positioned through the positioning pin. A through hole is machined in the middle of a cylindrical part on the right side of the clamp body. The oblique sliding block seat is placed on the right side of the interior of the through hole. The oblique sliding block seat is fixed to the pull rod through the coupling screw. The left side of the oblique sliding block seat abuts against the shaft shoulder of the pull rod through the belleville spring. One end of the left clamping oblique block and one end of the right clamping oblique block are attached to the oblique sliding block seat, and the other end of the left clamping oblique block and the other end of the right clamping oblique block abut against the inner surface of the workpiece. The right side face of the whole clamp body is positioned by the clamp cover. The hydraulic-linked expansion clamp is capable of clamping various irregular workpieces, end face machining is convenient, the workpieces can be clamped and released conveniently, and the clamping force is reliable.

The invention discloses a hoisting clamp for hoisting a steel plate transversely and belongs to the technical field of the design of hoisting devices. The hoisting clamp comprises a clamp claw, a hinge pin, a clamp body, a clamp claw tooth, a clamp body tooth, a hoisting hole and a hoisting rope. The clamp claw and the clamp body are connected through the hinge pin so as to form a revolute pair. The hoisting hole is machined in the top end of the clamp claw. When the steel plate is hoisted, the hoisting rope penetrates through the hoisting holes in the top ends of the clamp claws, the steel plate is clamped between bottoms of the clamp claws and working surfaces of the clamp bodies, and the steel plate can be hoisted and conveyed to the required position by pulling up the hoisting rope. In the hoisting process, the four hoisting clamps are used at the same time. The hoisting clamp for hoisting the steel plate transversely is simple in structure and low in cost, the steel plate is convenient to hoist and can be hoisted stably, the clamping force of the steel plate is convenient to adjust, the steel plate can be clamped reliably, the clamp claw and the clamp body are both made of low-carbon high-quality alloy steel, and the price is low.