276 results about "Four-slide" patented technology

The invention belongs to the technical field of stacking machine portal production, and particularly relates to an automatic welding system and method for a stacking machine portal assembly. A sliding rail clamping assembly is used for clamping two sliding rail components; the beam and plate components are clamped and mounted at the two ends of the sliding rail component through the beam and plate feeding assembly; two sliding sleeve components are installed on the outer side of each sliding rail component in a sleeving mode through the sliding sleeve feeding assembly; a carrier plate component is jointly clamped and mounted on the four sliding sleeve components through a carrier plate feeding assembly; a plurality of anti-falling inner supporting components are installed in the sliding rail component through an inner supporting filling assembly; a first fastening piece and a second fastening piece are additionally installed through a screw turning machine; the beam plate component and the sliding rail component are welded and fixed through a first welding assembly; the carrier plate component and the sliding sleeve component are welded and fixed through the second welding assembly, and automatic welding and assembling of the stacking machine portal frame assembly are achieved; the anti-falling inner supporting component can provide multi-stage buffering and is suitable for loading explosive objects, fragile objects or high-value objects.

The utility model discloses a plate shearing mechanism for an automatic plate shearing machine, which relates to the technical field of plate shearing machines and comprises a shell, two rotating rods are rotatably mounted on the inner wall of the shell, and two sliding strips are fixedly mounted on the outer walls of the two rotating rods. The outer walls of the two rotating rods and the outer walls of the four sliding strips are slidably sleeved with four sliding bevel gears and four rotating connecting sleeves, and positioning conveying assemblies are arranged at the bottom ends of the four sliding bevel gears correspondingly. The positioning and conveying assembly comprises a machine shell, a set of conveying rollers are rotationally installed on the inner wall of the machine shell, one ends of the outer walls of the conveying rollers penetrate through the top end of the machine shell, and a chain wheel and chain set is arranged at the top end of the conveying rollers, so that angle correction can be conducted on plates by moving the conveying rollers on the two sides at the same time, and the plates are prevented from inclining; and meanwhile, the plates can be prevented from shaking during shearing, one set of conveying rollers can be driven to rotate at the same time through the chain wheel and chain set, then the plates can be driven to be conveyed, and the cutting efficiency of the plates is improved.

The utility model relates to the related field of cylinder body grinding removal, and discloses a quartering hammer cylinder body interior refined grinding removal tool which comprises a bottom plate, a first installation frame and a second installation frame are fixedly arranged on the bottom plate, a grinding mechanism is installed on the first installation frame, and a grinding table is rotatably installed on the second installation frame. Two clamping blocks are slidably installed on the grinding table, a power mechanism is installed on the grinding table, and the power mechanism is in transmission fit with two of the sliding blocks; a linkage assembly is mounted on the polishing table; the linkage assembly is in transmission fit with the power mechanism, and the linkage assembly is in transmission fit with the other two clamping blocks. According to the automatic clamping device, the power mechanism and the linkage mechanism are arranged to drive the four sliding blocks to slide, the four sliding blocks drive the four clamping blocks to clamp and unclamp the breaking hammer cylinder body, therefore, automatic clamping and unclamping are carried out, manual participation is not needed in the whole process, the automation degree is high, time and labor are saved, and people are not prone to being hurt.

The utility model relates to the technical field of machine tools, in particular to a numerical control plane drilling machine which comprises a machine tool body and a working table, the working table comprises a mounting plate and a dovetail groove plate, four L-shaped sliding blocks are annularly arrayed on the mounting plate, and the four sliding blocks are driven by a driving device to synchronously move oppositely or oppositely; positioning plates are slidably mounted on the horizontal portions of the sliding blocks, ejector rods are arranged at the ends, opposite to each other, of the positioning plates, and the ejector rods are slidably connected with crow bars rotationally mounted on the vertical portions of the sliding blocks. During use, a workpiece is placed on the dovetail groove plate, the four sliding blocks are driven to get close to each other through the driving device, when the positioning plate abuts against the side wall of the workpiece, the positioning plate moves backwards to abut against the embedded frame to move in the straight groove so as to abut against the crow bar to deflect, and when the pressing end of the crow bar abuts against the surface of the workpiece, the crow bar and the positioning plate cannot continue to move to clamp the workpiece. Therefore, centering, positioning and clamping of the workpiece are completed, practicability is high, centering, positioning and clamping are conducted firstly, the preliminary positioning step of the drill bit is simplified, and operation is easier and more convenient.

The utility model belongs to the technical field of feeding tables of plate punching machines, and particularly relates to an extension mechanism for a feeding table of a plate punching machine, which comprises a plate punching machine, a fixed plate, an extension plate and two hinges and further comprises a sliding plate, the sliding plate is slidably mounted at the bottom of the fixed plate, the extension plate is arranged on one side of the fixed plate, and the two hinges are arranged on the fixed plate. The two hinges are both fixedly installed between the fixed plate and the extension plate, one side of the sliding plate extends into the extension plate, one side of the sliding plate is matched with the extension plate in an inserted connection mode, and the fixed plate is fixedly installed at a feeding port of the plate punching machine; the four sliding grooves are formed in the two sides of the fixed plate and the two sides of the extension plate correspondingly, sliding blocks are slidably installed in the four sliding grooves correspondingly, and rectangular columns are arranged on the two sides of the fixed plate correspondingly, so that the length of the feeding area is increased, operation is convenient, tools are not needed, and the use range of the whole device is widened; and meanwhile, it is ensured that the fixed plate and the extension plate are tightly and stably connected in use, and the stability of the whole device in use is ensured.

The utility model provides a raised head rivet disassembling auxiliary device which comprises a guide sleeve (1), a drill rod (2), a first bearing (3), a drill rod spring (4), a second bearing (5), a four-claw sliding block (6), a sliding block spring (7) and a drill bit (8), the guide sleeve (1) is in a barrel shape, a straight hole is formed in the upper end of the barrel shape, and a step hole is formed in the lower end of the barrel shape and used for installing the second bearing (5), the drill rod (2), the drill rod spring (4) and the first bearing (3); four sliding grooves are formed in the outer surface of the lower end of the barrel shape and used for installing a four-claw sliding block (6) and a sliding block spring (7), and the guide sleeve (1) provides an installation supporting structure for other parts. The drill rod (2) is in a round straight rod shape with a boss in the middle, the upper end of the drill rod is installed in the first bearing (3), the lower surface of the boss makes contact with the upper end of the drill rod spring (4), the lower end of the drill rod is installed in the second bearing (5), the drill rod (2) is used for transmitting power, and the upper end of the drill rod is connected with a pneumatic tool and a drill bit (8).

The utility model discloses a kind of transfer spreader, including spreader main body and the spreader frame being installed on spreader main body, four sliding cavities are opened in spreader main body, sliding cavity is slidably arranged with slide bar, the same side part pallet is installed on the two minimum spacing slide bar, the end of slide bar away from side part pallet is provided with stop block, the through hole that is communicated with outside and is adapted to the diameter of slide bar is opened in the inner wall of one side of sliding cavity, when the size of spreader main body itself needs to be adjusted, two racks can be driven to each other close or each other away by rotating transmission gear, two side part pallets can be driven to each other close or each other away by the sliding block connected on two racks at this time, to realize the size of spreader itself is adjusted, by the setting of slide bar, the moving direction of side part pallet can be guided, and the moving range of side part pallet can be limited by the stop block set in the end of slide bar, avoid the connection between side part pallet and spreader main body to be separated.

The present application relates to sheet metal parts processing technical field, especially to a kind of sheet metal parts processing with straightening device, including pedestal, the rack being fixed in the upper portion of pedestal by four slide columns, first electric oil cylinder being installed in the upper end of rack middle part and movable installation in the lower end of first electric oil cylinder and four slide columns between pressing plate, the upper end middle part of pedestal is embedded with ceramic electric heating plate below pressing plate, the middle part of left and right ends of pedestal is all set with side groove.The present application, by setting ceramic electric heating plate, side groove, first trapezoidal slider, second electric oil cylinder and clamping plate on the original pedestal, while setting slide buckle, second trapezoidal slider and spiral extrusion spring on pressing plate, can be two ends of sheet metal part is drawn in middle hot-pressing comprehensive straightening treatment, reduce the occurrence of bending deformation problem in sheet metal machine straightening process, effectively reduce the workload of sheet metal part straightening processing, to improve the convenience and effect of sheet metal part straightening processing.

The utility model discloses a counterweight shell for mine machinery relates to mine machinery technical field. The utility model discloses a counterweight device main part is internally equipped with adjusting device, and the top of counterweight device main part is equipped with fixed block, and the inside of fixed block is equipped with transmission, and adjusting device includes four sliding rods. The utility model through staff starting drive motor, makes transmission link drive stop block and rotate, and staff starts electric push rod, and makes stop block move to the junction of rotary rod no.

The double-tool-bit cutting device comprises a main frame, a first sliding rail and a second sliding rail are symmetrically arranged along an opening of the main frame, a third sliding rail and a fourth sliding rail are slidably arranged between the first sliding rail and the second sliding rail, and sliding block bearings are slidably arranged on the third sliding rail and the fourth sliding rail correspondingly; the sliding block bearing is connected with an operation table so that the operation table can slide. A first moving assembly is arranged on the operation table, the output end of a first gear rack of the first moving assembly is connected with a second moving assembly to drive the second moving assembly to rotate, and the two ends of the second moving assembly are connected with cutting tool bits correspondingly so that the cutting tool bits can rotate for cutting. According to the double-tool-bit cutting device, rectangular steel plates can be cut by moving the cutting tool bits in the X-axis direction and the Y-axis direction, the cutting tool bits can rotate to cut the steel plates through the transmission bearings, round steel plates are obtained, the cutting quality of rectangular and round steel plate cutting is improved, and the working efficiency is improved.

The carton flattening device comprises a base, supporting columns are connected to the four corners of the top of the base, a supporting plate is connected to the tops of the supporting columns, a hydraulic telescopic rod is connected to the top of the supporting plate, and the output end of the hydraulic telescopic rod penetrates through the supporting plate and is connected with a sliding plate which is provided with four sliding openings. Through cooperation of the base, the supporting column, the supporting plate, the hydraulic telescopic rod, a sliding plate, a limiting hole, a limiting column and a flattening plate, an electric telescopic rod can be used for driving the flattening plate to flatten cartons, through cooperation of a transmission cavity, a lead screw, a servo motor, a transmission strip, an arrangement groove, an arrangement strip, a lifting groove and a lifting strip, the carton flattening device can rapidly adapt to cartons of different sizes, and the carton flattening device is convenient to use. And both small express cartons and large industrial packaging cartons can be effectively flattened, so that the application range of the flattening device is expanded.

The utility model relates to food processing equipment field, specifically is a kind of toast device, including toast mechanism, and the toast mechanism is provided with dismounting mechanism, and the dismounting mechanism includes four sliding rods, and the sliding rod opposite side is fixedly connected with circular clamping block in front and back on both sides, and the sliding rod front and back are fixedly connected with sliding block, and the sliding block is all set with threaded hole in rear, and the threaded hole inner wall screw thread is connected with bidirectional threaded rod on both sides, and the bidirectional threaded rod both sides are fixedly connected with No. Handle;The utility model passes through bidirectional threaded rod linkage, just need to rotate No. Handle, and the insertion locking or pulling out unlocking of both sides circular clamping block can be completed simultaneously, and single-time dismounting time is greatly shortened, and it is more simple and convenient to operate, and dismounting mechanism transmission is rigid connection, and there is no spring, plastic buckle and other easy-wear spare parts, and service life is long, and it is far more than the service life of traditional elastic fixed structure under normal use.

The present application relates to the technical field of angle iron frame welding, and particularly relates to a four-head automatic welding device for bed angle iron frame and a welding process; the device comprises a rack and four-head welding assemblies, the four-head welding assemblies comprise right-angle plates, vertical plates, carriages, air cylinders, horizontal plates, sliding seats, welding machines, adjusting members and supporting members, the adjusting members drive the four sliding seats to slide along the horizontal plates respectively, so that the welding torches of the welding machines are aligned with the joints to be welded; the air cylinders are started to drive the carriages to slide downward along the vertical plates, so that the welding machines are lowered to the set welding stations; meanwhile, the four welding machines are started to synchronously and automatically weld the angle iron joints at the four corners of the frame; by the above-mentioned mode, the four corners of the bed angle iron frame are synchronously and automatically welded by four groups of independent welding units, the whole process does not need manual point-by-point operation, and the problems of long manual welding time and high labor intensity in the prior art are effectively solved.

The utility model discloses safety protection equipment for oil field underground operation, which comprises a base, a top plate is arranged above the base, the upper end of the base is provided with two and four sliding chutes, and a buffer mechanism for buffering the top plate is jointly arranged in the two sliding chutes on the same side. The buffering mechanism comprises two sliding blocks slidably connected into the two sliding grooves, grooves are formed in the upper ends of the two sliding blocks correspondingly, rotating rods are rotationally connected into the two grooves correspondingly, fixing blocks are rotationally connected to the ends, away from the sliding blocks, of the two rotating rods correspondingly, and the upper ends of the two fixing blocks are fixedly connected to the lower end of a top plate. The side walls of the two sliding blocks are elastically connected with the inner wall of the sliding groove on the same side through springs. The device is reasonable in structure, falling objects can be blocked through the buffering mechanism and the top plate, meanwhile, when the falling objects make contact with the top plate, the top plate is buffered, top plate damage caused by impact force is avoided, and the service life of the device is prolonged.

The invention discloses a safety device for tunnel construction, and belongs to the technical field of tunnel construction. The problem that an existing tunnel construction safety supporting device is prone to breakage and damage when collided by falling stones is solved. The device comprises a fixing base, four connecting rods are arranged on the bottom side of the fixing base, supporting columns are arranged at the bottom ends of the connecting rods, and a lifting assembly is arranged between each supporting column and the corresponding connecting rod; a through groove is formed in the top end of the fixing base, sliding ways are arranged at the four ends of the bottom, sliding blocks are slidably arranged in the sliding ways, and first springs fixedly connected with the sliding blocks are fixed to the two ends in the sliding ways. A supporting plate is arranged at the top end of the vertical frame, a first fixing column is arranged at the bottom end, and a guide assembly is arranged between the first fixing column and the fixing base; a pair of second fixing columns are symmetrically arranged at the two ends of the bottom side in the fixing base, the top ends of the sliding blocks extend out of the sliding ways and are fixedly connected with the second fixing columns, and multiple sets of first fixing arms are connected between the first fixing columns and the second fixing columns through rotating shafts. The device can effectively buffer gravel impact and improve anti-collision protection and safety.

The utility model discloses an anti-vibration transportation device for galvanic piles, and relates to the technical field of galvanic pile transportation, the anti-vibration transportation device for galvanic piles comprises a bottom plate, the upper side surface of the bottom plate is provided with a damping assembly, the upper side surface of the damping assembly is fixedly connected with a mounting plate, the upper side surface of the mounting plate is provided with two limiting grooves, and the upper side surface of the mounting plate is fixedly connected with the damping assembly. Two clamping plates are arranged on the mounting plate, the lower side surfaces of the two clamping plates extend into the limiting groove and are in sliding connection with the limiting groove, a pressure plate is arranged above the mounting plate, four connecting rods are rotationally connected to the lower side surface of the pressure plate, four sliding grooves are formed in the upper side surface of the mounting plate, and the upper side surface of the mounting plate is provided with a clamping plate. The pressure plate is driven to descend by means of the gravity of the galvanic pile, and then the fixing assembly is matched to automatically drive the two clamping plates to get close to each other to complete clamping of the galvanic pile, so that the problem that the clamping speed is low by means of a lead screw in a traditional structure is avoided, and the fixing efficiency is improved.

The application discloses a solid propellant biaxial tensile testing device and a testing method, and relates to the technical field of solid propellant mechanical property testing. The device comprises a vertical support, a mounting plate, sliding rails, fixed pulleys, movable pulleys, moving clamps, a loading mechanism and ropes. The mounting plate is fixedly installed on the vertical support. Four sliding rails are installed on the mounting plate. The four sliding rails are distributed at equal angles in a cross shape. One moving clamp is slidably arranged on each sliding rail. One end of the moving clamp is used for connecting a solid propellant biaxial tensile sample. The other end of the moving clamp is provided with a plurality of movable pulleys. A plurality of fixed pulleys are arranged on the outer sides of the sliding rails. The fixed pulleys are installed on the mounting plate. The loading mechanism is provided with a plurality of loading mechanism movable pulleys. The ropes are used for connecting the loading mechanism movable pulleys, the fixed pulleys and the movable pulleys, and suspending the loading mechanism below the mounting plate. The application can realize biaxial tensile testing of solid propellant creep load under different loading ratios. The structure is simple, small and low in economic cost.

The invention discloses a concrete detector, and relates to the technical field of concrete.The concrete detector comprises a bottom plate, vertical plates are fixedly installed at the positions, close to the two sides, of the top of the bottom plate, two collapse half barrels are arranged between the two vertical plates, a moving structure is arranged on one sides of the two vertical plates, and the moving structure comprises four moving wheels; sliding grooves II are formed in one sides of the two vertical plates in a front-back symmetrical penetrating mode and penetrate through the other sides of the two vertical plates, the four moving wheels are installed in the four sliding grooves II correspondingly, connecting blocks are fixedly installed on the cambered surfaces, away from each other, of the two collapsing half barrels correspondingly, first tooth grooves are formed in one sides of the moving wheels in a penetrating mode and penetrate through the other sides of the moving wheels correspondingly, and the two connecting blocks are rotationally connected with connecting shafts correspondingly; second tooth grooves are formed in the positions, close to the two ends, of the outer surface of the connecting shaft, the two ends of the connecting shaft penetrate through the second sliding grooves in the two sides correspondingly, and a pair of third sliding grooves are formed in the sides, away from each other, of the two vertical plates in a front-back symmetry mode. According to the concrete slump detection device, by arranging the moving structure, the effect that concrete slump detection is more rapid and convenient is achieved.

The invention relates to the technical field of nuclear facility installation, and discloses a modular self-locking anti-vibration clamping rail connecting system for nuclear facilities, which solves the problems of long construction period, large field operation quantity, difficulty in quality control, large limitation of field conditions and the like due to the fact that most of the existing nuclear facilities adopt a traditional integral construction mode, and comprises two rails, supporting strips are fixedly installed between the two ends of the bottoms of the two rails, silicone rubber pads are fixedly installed at the two ends of the bottoms of the two supporting strips, three high-damping rubber supporting columns are fixedly installed at the bottoms of the two rails correspondingly, and the middles of the surfaces of the two rails are sleeved with two sliding tables correspondingly. Limiting blocks are fixedly mounted on the inner walls of the two sides of the four sliding tables correspondingly, and limiting grooves are formed in the two sides of the two rails correspondingly; according to the clamping rail connecting system, a single nuclear facility is installed in a modularized mode to replace a traditional overall construction mode, so that efficient installation and flexible adjustment are achieved, and the modern construction requirement is met.

The utility model relates to the technical field of continuous casting machine vibration, and discloses a vibration device for a metallurgy continuous casting machine, which comprises a mounting base and a vibration rack, one side of the vibration rack is fixedly connected with a mounting rack, the lower end of the mounting rack is fixedly connected with a second sliding cylinder, and the periphery of the upper end of the mounting base is provided with sliding grooves. Four sliding grooves are formed in the lower end of the vibration rack, sliding blocks are slidably clamped to the inner surfaces of the four sliding grooves, buffering bent rods are rotationally connected to the upper ends of the four sliding blocks, the upper ends of the four buffering bent rods are rotationally connected with the four corners of the lower end of the vibration rack correspondingly, and first buffering springs are fixedly connected to one sides of the four sliding blocks; the two sides of the upper end of the installation base are both provided with sliding rods, and the two ends of the two sliding rods are both fixedly connected with first fixing blocks. When the device vibrates a crystallizer, force borne by the vibration rods of the device is minimized, metal fatigue of the device is relieved to the maximum extent, and the service life of the device is prolonged.

This utility model relates to a screw-based unloading mechanism, belonging to the field of unloading mechanism technology. It includes an installation platform with an adjustable box assembly on its top. Four bearing seats are fixedly installed at the bottom of the installation platform, and a distributing screw is rotatably mounted on the bottom of each bearing seat. A drive mechanism for rotating the distributing screw is located on the top of the installation platform. A height adjustment assembly, comprising four sliding bearings fixedly installed on the top of the installation platform, is also located on the top. This screw-based unloading mechanism, by setting four sliding bearings on the top of the installation platform and slidingly mounting lifting guides inside the bearings, allows the installation platform to slide up and down on the surface of the lifting guides. A lifting wheel drives a lifting screw to rotate, and under the action of a fixing nut, the height of the installation platform is adjusted to accommodate conveyor belts of different heights and different sizes of square boxes and barrels.

The utility model provides instrument numerical control machining equipment, which belongs to the field of numerical control machining and comprises an instrument numerical control lathe, a clamping table is fixedly arranged on the instrument numerical control lathe, four sliding grooves are formed in the clamping table, and clamping assemblies are arranged in the four sliding grooves; and the clamping assembly comprises electric sliding rails, a rectangular cylinder, a moving plate, a shaft rod and a clamping plate, the electric sliding rails are fixedly installed in the sliding grooves, and electric sliding blocks are arranged on the electric sliding rails in a matched mode. The clamping assembly is arranged, when a workpiece is clamped and fixed, the angle of the clamped workpiece can be adjusted, different machining requirements are met, the clamping state of the workpiece does not need to be removed, the working efficiency is improved, the installation assembly is further arranged, the clamping plate can be rapidly and conveniently replaced, and the machining efficiency is improved. And the device adapts to different workpieces.

The utility model relates to the technical field of aerated brick production, and particularly discloses a cutting device for aerated brick processing, which comprises a bottom plate, the upper end face of the bottom plate is fixedly connected with a first door-shaped frame, the front end face and the rear end face in the first door-shaped frame are respectively provided with a first sliding chute, and the interiors of the two first sliding chutes are respectively and rotatably connected with a first screw rod; the outer walls of the two first lead screws are both in threaded connection with first sliding blocks, a sliding plate is fixedly connected between the two first sliding blocks, the lower end face of the sliding plate is fixedly connected with two symmetrically-distributed supporting plates, the interiors of the two supporting plates are both slidably connected with two symmetrically-distributed sliding rods, and the ends, close to each other, of the four sliding rods are fixedly connected with a second door-shaped frame. The lower end of the inner wall of the second door-shaped frame is fixedly connected with a metal cutting wire, the metal cutting wire in reciprocating motion can be driven by the first servo motor and the driving motor to move downwards to cut the aerated bricks, and the metal cutting wire can generate a small cutting gap, so that the size precision of brick bodies can be improved, and errors are reduced.

The utility model discloses a kind of surface treatment equipment for alloy ball tooth processing, belong to alloy ball tooth processing technical field, including base, fixedly installed with fixed motor in the base, the output shaft end portion of fixed motor is fixedly installed with disc, several inclined slides are opened in the disc, and rolling installation is carried out in inclined slide, and the roller is rolled in the inclined slide, several straight slides are opened in the upper surface of base, and sliding block is slidably installed in straight slide, the roller is rotatably installed in the lower surface of sliding block, the upper surface of sliding block is fixedly installed with fixed thimble;By setting disc cooperation roller and sliding block and fixed thimble use, the rotation of disc cooperation roller drives four sliding blocks to move synchronously inward or outward, and then four fixed thimbles are used to realize the four-way positioning of workpiece, improve the stability of fixed effect, avoid the phenomenon of fixed shaking, ensure that subsequent ball tooth surface processing operation accuracy is good.

The utility model discloses a kind of steel pipe pile sinking pile deviation rectifying devices, including device main body, the central position of device main body is provided with through-hole, four rectangular distribution's sliding hole are provided on device main body, transmission sliding block is slidably arranged in sliding hole, annular groove is provided in device main body and is communicated with four sliding holes, transmission ring is rotatably installed in annular groove, in use process, device main body is placed at stake hole and makes through-hole center and stake hole center position alignment, steel pipe pile is in through-hole at this time, can be rotated by servo motor driven driving gear, to make transmission ring rotate in annular groove, and by the double limit of arc guide groove and sliding hole, when the sliding axle on transmission sliding block slides along arc guide groove, make transmission sliding block slide along sliding hole, make four transmission sliding blocks synchronously mutually close and by the roller on transmission sliding block abutting to the outer surface of steel pipe pile, realize the centering deviation rectification of steel pipe pile.

The utility model provides a composite floor slab structure which comprises two slab bodies, two notches are formed in the upper ends of the interiors of the slab bodies, two plum blossom-shaped grooves are formed in the lower ends of the two slab bodies, a connecting plate is arranged between the two slab bodies in a sliding mode, four connecting grooves are formed in the connecting plate, sliding columns are arranged in the four notches in a sliding mode, and the sliding columns are connected with the connecting plate in a sliding mode. And clamping blocks are arranged at the lower ends of the four sliding columns correspondingly, the four clamping blocks penetrate through the connecting grooves correspondingly to be connected with the adjacent plum blossom grooves in an inserted mode, sliding discs are arranged at the upper ends of the outer arc faces of the four sliding columns correspondingly in a sliding mode, pressing plates are arranged at the upper ends of the four sliding columns correspondingly, and elastic driving locking units are arranged between the four pressing plates and the sliding discs. According to the composite floor slab structure, the splicing method of the two slab bodies can be rapidly achieved through the design of the springs and the clamping blocks, the construction process is simplified, the splicing speed is obviously increased, the overall construction efficiency is improved, meanwhile, manual dependence is reduced, the labor cost is reduced, and the material use efficiency is improved.

The utility model relates to welding piece strength test technical field, concretely is a kind of welding piece strength test device, the fixed subassembly includes four connecting pieces, four the connecting pieces are fixedly connected in the top of fixed frame respectively, the inside of four the connecting pieces is fixedly connected with fixed bottom plate jointly, recess is set up in the inside of fixed bottom plate, four sliding grooves one are set up in the inside of fixed bottom plate. This welding piece strength test device, can guarantee that welding piece is in correct stress state in testing process, avoid the uneven partial stress, sliding or rotation etc. caused by clamping instability, to make the test result real reflection welding piece's strength performance, reduce test error, improve the reliability and repeatability of data, need not frequent adjustment clamp or reinstallation welding piece, can reduce test preparation time and the test interruption frequency caused by clamping problem, make testing process more smooth, to improve overall test efficiency.

The utility model belongs to the technical field of elevator installation, and discloses a machine room passenger elevator installation auxiliary device which comprises an elevator, movers are fixedly installed at the four ends of the bottom of the elevator correspondingly, adjusters are fixedly installed at the bottom end of the top of the elevator correspondingly, and sliding blocks are slidably installed in the middles of the adjusters; towing rods are fixedly installed on the outer sides of the tops of the sliding blocks, a top ball head of each towing rod is connected with a bearing platform, stepping motors on the four adjusters are started to drive lead screws to rotate so as to control the four sliding blocks to move up and down, and due to the fact that the towing rods on the tops of the sliding blocks are in ball head connection with the bearing platforms, the heights of the sliding blocks in the four directions are adjusted respectively. When the elevator is installed, the bearing platform can be driven and controlled to adjust the flatness of the bearing platform, after the flatness of the bearing platform is adjusted to be proper, the elevator can be started to rise, the lift car on the bearing platform is lifted to a proper installation position, and installation operation is conducted.

The present application relates to the technical field of lifting appliance, and specifically discloses a lifting appliance with self-balancing function, which comprises a supporting device, a moving device, a clamping device, a fixing device, a rotary support bearing and a speed reducer; the moving device is arranged in the inner cavity of the supporting device and can move forward and backward in the supporting device; the clamping device is four in number and is arranged on the left and right sides of the moving device respectively, and the moving device can drive the four clamping devices to clamp the container; the fixing device is four in number and is arranged on the bottom surface of the four clamping devices respectively. The moving device drives the gear to rotate through the brake motor, drives the rack and the connecting rod to link together, makes the four sliding blocks move forward and backward in the sliding groove, accurately adjusts the lateral spacing of the clamping device, quickly matches the fork groove position of the container of different sizes, can adapt to containers of various specifications without replacing the lifting appliance, greatly reduces the time consumption of equipment replacement, improves the loading and unloading efficiency, and reduces the operation cost.