315 results about "Forward sliding" patented technology

An auto opening folding knife having a blade pivoted from a closed position to a spring urged release open locked position with a combined self-activating sliding auto release and locking arm. The sliding auto release and locking arm is mounted within the knife handle on dual fixed guide and pivot pins within respective arm openings being spring urged there against. Arm positional projections are engaged on a modified blade shank during operation moving the locking arm back and up then releasing to slide forward locking the blade in auto open use position until manual arm engagement by the user against the arm spring and blade spring for release and transitional closure.

The invention discloses a biomechanical self-ligating bracket, and belongs to the field of biomechanical self-ligating brackets, the biomechanical self-ligating bracket comprises an arch-shaped base, the upper end of the arch-shaped base is fixedly connected with a base, the upper end of the base is connected with a bracket wing assembly, the upper end of the base is connected with a limiting assembly, and the interior of the bracket wing assembly is connected with an anti-opening assembly. According to the key points of the technical scheme, by arranging a limiting assembly, when the arch wire slides in the designed direction (forward sliding), namely, the arch wire slides from back to front, a sliding block keeps in contact with the lower portion of the arch wire under the elastic force of a spring, the thrust of the arch wire is decomposed into normal force and tangential force, the friction resistance of the arch wire is small, and when the arch wire slides in the reverse direction, the sliding block is dragged by the friction force to slide along a sliding groove; the spring is stretched, the clamping block is finally wedged into the clamping groove, and the friction resistance of the arch wire is increased, so that the sliding block forms a self-locking effect, and the situation that teeth are difficult to move in a preset direction due to reverse sliding of the arch wire is prevented.

The utility model belongs to the technical field of motor processing, and particularly relates to a bus terminal embedding machine which comprises a rack, a servo electric cylinder, a movable assembly, a chuck assembly and a leading-in assembly, the servo electric cylinder comprises an electric cylinder body and a piston rod, the movable assembly comprises a sliding block, a sliding rail, a rotating shaft and a swing plate, the chuck assembly comprises a chuck, and the chuck is provided with a guide groove. According to the bus terminal embedding machine, the piston rod of the servo electric cylinder drives the sliding block to slide forwards along the sliding rail, the swing plate rotates clockwise along the rotating shaft under the rotating action of the rotating shaft, meanwhile, the swing plate drives the chuck to rotate anticlockwise, and in the anticlockwise rotating process of the chuck, due to the fact that one end of the guide groove is gradually arranged towards the center of the chuck, the clamping plate can rotate clockwise. The guide groove pushes the first guide block and the second guide block to move towards the center of the chuck, and the first guide block and the second guide block automatically join the stator copper wire to the terminal for assembly, so that the stator copper wire assembly efficiency and the motor production and processing efficiency are improved.

The invention discloses an adjustment method for a flat-lying automobile seat, comprising two bases, which are mounted on a vehicle frame, and are provided with a slide groove and a stop block, and the two bases are fixedly connected by two connecting rods; the lower end of the connecting frame is hingedly connected to the base, and the upper end of the connecting frame is hingedly connected to a seat frame; the invention adopts the cooperation of a ratchet and a pawl to realize unidirectional rotation of a seat back frame, and the seat back frame can be adjusted to any angle; the invention utilizes the function of a ratchet cover and a pawl so that the seat back frame can also be adjusted to any angle during the rotation process; the invention utilizes the linkage function of a connecting frame, a slider, a connecting rod, a seat back frame, and a seat frame, so that the seat frame can move forward and move downward at the same time, and can flip backward and slide forward at the same time; therefore, the seat can make full use of the front space, reduce the occupation of the rear space, and greatly improve the comfort and functionality of the automobile seat.

An embodiment of a fishing fly box includes a generally rectangular open case defining an interior space for holding fishing flies including ferromagnetic hooks. The case is defined by a side wall structure extending from a base surface. A locking lid is configured for sliding movement along opposed top edges of the side wall structure, between an open position and a closed position in which the lid is slid forward with its leading edge abutting an edge of the case at the first side wall of the case. One or more magnets are positioned in the side wall structure or base surface. A blade edge is attached to the case in the interior space and exposed at a notch formed in the side wall structure, and is covered by the lid with the lid in the closed position.

The invention discloses a female die ejection device of a cold header, a slidable sliding heavy punch is arranged in a female die cavity, the front end of the sliding heavy punch is fixedly connected with a punching rod, and the rear end of the sliding heavy punch is connected with an ejection pipe through an elastic connecting piece; a limiting structure is further arranged between the first female die sleeve and the sliding heavy punch and used for limiting sliding of the sliding heavy punch. The elastic connecting piece and the limiting structure enable the sliding heavy hammer to have a first state that the sliding heavy hammer slides forwards along with pushing of the ejection pipe and the elastic connecting piece; in the second state, advancing is stopped under the limitation of the limiting structure, and the elastic connecting piece continuously compresses and deforms; in the third state, the limiting structure is released from the limiting state and slides forwards; and in the fourth state, the elastic connector slides backwards under the restoring force of the elastic connector. By the adoption of the specially-designed product ejection device, the punching rod can stably eject out a product part and then retract backwards in time, transverse movement after the part is clamped by the clamp is not hindered, and the part is prevented from falling off.

The utility model relates to the technical field of ship manufacturing, and discloses a groove compensator which comprises a base, a hydraulic module, a laser module and walking wheels, the side face of the base is fixedly connected with the hydraulic module, the front face of the base is fixedly connected with a first inserting tenon, the base is connected with the laser module in a sliding mode through the first inserting tenon, and the laser module is connected with the walking wheels. And walking wheels are arranged at the bottom of the base. According to the groove compensator, the lineation module is installed, after needed data are measured, the lineation module can be moved into a data position, then a straight line is drawn from a marking point of the data, and through the use of the lineation module, a worker does not need to mark on the two sides of steel after measurement is completed, and only needs to complete measurement marking on one side; and then the scribing module slides forwards straightly from the marked position, so that the workload of workers is reduced, and compared with a traditional method that the workers manually stroke straight lines, the straight lines drawn by the device are straighter, so that the cutting difficulty of the workers is reduced to a great extent.

The invention belongs to the technical field of steel pipe cold drawing, and particularly relates to a cold drawing device for machining seamless steel pipes and a cold drawing method thereof.The cold drawing device comprises a base, a fixing frame is fixedly installed on the base, multiple sets of layer plates are arranged on the fixing frame from top to bottom at equal intervals, and stabilizing boxes are fixedly installed on the layer plates; the front side of each stabilizing box is fixedly provided with a mold for performing cold drawing operation on a steel pipe, one side, far away from the stabilizing box, of the mold is provided with a traction head, a rotating rod can be driven to rotate by starting a motor II, so that a gear I drives a toothed plate I to slide forwards, and when the toothed plate I slides forwards, the traction heads on the front sides of the stabilizing boxes can move forwards; a plurality of steel pipes are subjected to cold drawing after penetrating through the die, local stress concentration and snapping can be avoided through synchronous cooperative operation of the arranged pushing part and the traction head, the pushing part exerts pushing force from the rear portion, the traction head exerts pulling force from the front portion, the two forces form resultant force on the steel pipes, power sources are unified, and automatic synchronization of the pushing force and the pulling force is guaranteed.

The invention discloses a trailer traction mechanism protection frame, and belongs to the technical field of semitrailers. The trailer traction mechanism protection frame comprises a front protection frame body and a rear protection frame body which are connected to the bottom of a trailer carriage and arranged on the front side and the rear side of a saddle respectively so as to avoid unhooking of a trailer, an interlayer is arranged on the front portion of the trailer carriage, and a turnover mechanism is arranged in the interlayer; and the front protective frame is connected with the turnover mechanism. When the main frame and the trailer compartment are picked and hung, the turnover mechanism turns over the front protection frame into the interlayer, and the main frame is separated from the front end of the trailer compartment to be picked and hung. When the main frame is hung on the trailer carriage, the front protection frame is arranged in the interlayer, after hanging is completed, the turnover mechanism turns over the front protection frame out of the interlayer, and the front protection frame and the rear protection frame are arranged on the front side and the rear side of the saddle respectively. The safety risk caused by the fact that a main vehicle saddle locking mechanism or a trailer traction pin is accidentally damaged, slides forwards out of control to impact a cab or is abnormally separated in the running process can be effectively prevented.

The utility model relates to a material strap puller which is provided with a lower die fixing seat and a sliding block, the upper end of the lower die fixing seat is provided with a front-back through material passing channel, a cover plate is assembled above the material passing channel, the cover plate and the lower die fixing seat cooperate together to guide a material strap in the material passing channel to move, the feeding problem caused by warping of the material strap is avoided, and it is guaranteed that material pulling is stable and smooth. The sliding block is assembled in the lower die fixing base and can slide in the moving direction of the material belt. The sliding block is provided with a material pulling hook, a driving part and a reset part. The material pulling hook is used for clamping a material pulling hole preset in a material belt, and the reset part drives the sliding block to slide forwards in an elastic reset mode to pull the material belt to move. Under the action of an external punch, the driving part enables the sliding block to slide backwards, the reset part accumulates force, and the material pulling hook is connected with the pulled material in a clamping mode again. The sliding block is matched with the punch, so that the sliding block drives the material pulling hook to repeatedly pull materials, the material pulling operation is stable, impact and shaking are reduced, and noise is low. The whole structure is simple and reasonable, manufacturing, dismounting and maintenance are convenient, and the service life is long.

The utility model discloses a pallet suitable for various storage boxes and vending equipment or a storage shelf, which comprises movable discs adjacently arranged on a closed bent slide way and the storage boxes arranged on the movable discs, the bottom of each movable disc is provided with a central column, and each central column is provided with a central through hole. A tray and goods are placed in the goods discharging assemblies, the driving assembly drives one of the goods discharging assemblies to move circularly along the closed bent sliding ways, the other goods discharging assemblies in the closed bent sliding ways are squeezed to slide forwards in sequence, and it is guaranteed that center columns of the adjacent movable discs enter the next clamping groove of the rotary shifting piece; and continuous and smooth delivery of the delivery assembly driven by the driving mechanism can be ensured.

A foldable electric bed includes pivotally connected front and rear frames, first buttock and back supporting units linked together and slide on the front frame, a first actuator disposed with the first buttock and back supporting units, a bottom frame slidably disposed with the rear frame, second buttock, thigh and lower leg supporting units linked together and disposed with the bottom frame, a quick release connected with the first and second buttock supporting units, and a second actuator disposed with the thigh supporting unit and the bottom frame. When the back supporting unit is driven by the first actuator to swing upwardly, the first and second buttock supporting units, the bottom frame, and the thigh and lower leg supporting units are driven to slide forwards.

The utility model discloses anti-pinch folding bearing furniture, which comprises a bearing panel and two X-shaped supports symmetrically arranged on two sides of the bearing panel, each X-shaped support comprises a front leg and a rear leg which are rotatably hinged, the upper end of each rear leg is hinged with the bottom surface of the bearing panel, and the lower end of each rear leg is hinged with the bottom surface of the bearing panel. The upper ends of the two front legs are connected to the left side face and the right side face of the bearing panel in a sliding mode and slide forwards and backwards along the left side face and the right side face of the bearing panel, and the upper ends of the two front legs extend upwards and are connected to form a handle. The handle and the front end of the bearing panel are grasped, then the handle is moved in the direction close to the front end of the bearing panel, the upper ends of the front legs slide forwards along the sliding guide rails, folding of the folding type bearing furniture is achieved, and hands do not need to be placed on the portion, below the bearing panel, of the X-shaped support during folding. Therefore, the problem that the hands are clamped in the process that the included angle between the front leg and the rear leg is reduced is solved, and high safety and good use feeling are achieved.

The invention provides a firework inner barrel feeding device and method and combined firework production equipment, and relates to the technical field of firework production equipment, and the firework inner barrel feeding device comprises a first layer platform, a first pushing mechanism and a second pushing mechanism. An inner cylinder can be vertically placed on the first layer of platform, and a plurality of flow dividing channels and feeding sliding ways are arranged on the first layer of platform. The first pushing mechanism is provided with a first pushing piece used for pushing the inner cylinder and a first driving assembly. The first driving assembly is used for driving the first pushing piece to act; the first pushing piece is used for pushing the inner barrels in the feeding sliding way from the rear portions of the inner barrels to the front portions of the inner barrels so that the inner barrels in the feeding sliding way can be kept in a gathering state when sliding forwards. The second pushing mechanism comprises a second pushing piece, a protecting and holding piece and a second driving assembly; the second driving assembly is used for driving the second pushing piece and the protecting and holding piece to act; the second pushing piece and the protecting and holding piece are both located behind the first pushing piece. According to the feeding device, the inner barrel can be prevented from toppling over in the inner barrel feeding process, and the continuity of the feeding process is ensured.

The chain type cargo conveying mechanism comprises a machine body, multiple sets of conveying units, limiting units and a locking unit, each conveying unit comprises a triggering assembly, a bearing assembly and a connecting assembly, the bearing assemblies and the connecting assemblies are located on the two sides of the triggering assembly respectively, and the two sets of limiting units are symmetrically arranged on the two sides of the triggering assembly. The limiting unit comprises a supporting part and a limiting part located above the supporting part, the triggering assembly controls the limiting unit to rotate, and then the limiting part limits goods; and the locking unit comprises a locking assembly arranged on the supporting part and two unlocking units fixedly installed on the two sides of the machine body conveying terminal correspondingly, and the locking assembly has a locking function and a rotating function. Through the conveying unit and the limiting unit, precise limiting and flexible protection are combined, and therefore the problem that due to the fact that an existing conveying mechanism is suddenly paused or blocked, goods slide forwards relative to a conveying chain and even rush out of a conveying path is solved.

The invention relates to the technical field of silicon steel sheet production, in particular to a wear-resistant stamping die for silicon steel sheet production, which comprises a fixed die, a movable die is arranged on the upper side of the fixed die, and a hydraulic cylinder is fixedly mounted in the middle of the upper end of the movable die. When the magnetic sliding block is close to the magnetic strip on one side, the magnetic sliding block is pushed to move towards the other side under the magnetic repulsive force of the magnetic strip, the magnetic sliding block drives the first gear shaft and the cleaning blade to synchronously move towards the other side, the first gear shaft and the cleaning blade are driven to rotate under the action of the first rack, and when the magnetic sliding block moves to the other side, the first gear shaft and the cleaning blade are driven to rotate. And the first gear shaft and the cleaning blades can slide left and right in a reciprocating mode and rotate automatically by repeating the steps, and the arranged cleaning blades are beneficial to removing chippings and dust adhering to the bottom in the fixed mold, so that subsequent blowing is facilitated.

The utility model relates to the technical field of electric spark machining, in particular to a part positioning jig for electric spark machining, which comprises a base, a fixing table is arranged at the top of the base, side grooves are arranged on two sides of the outer surface of the fixing table, and four support legs are mounted at the bottom of the base. Positioning structures are arranged in the two side grooves, the two positioning structures comprise threaded rods, the two threaded rods are in threaded connection with the side grooves, and rotating handles are installed at one ends of the two threaded rods; by means of the positioning structure, when common parts and special-shaped parts are machined and positioned, the parts are placed in the fixing table, then rotating handles are rotated correspondingly, threaded rods are made to move forwards, and therefore fixing blocks can drive connecting rods to slide forwards in moving grooves; therefore, the side line of the part can be hooped, the part can be fixed, and the purpose of fixing and positioning different special-shaped parts is achieved.

The utility model relates to a clamp for a piston with a draft angle on the side wall of an inner cavity in the field of manufacturing of aluminum pistons of internal combustion engines, which is characterized in that according to the draft angle characteristic of the side wall of the inner cavity of the piston, a clamp positioning point adopts the inclination with the same size as that of a corresponding positioning point of the piston, and the inner side wall of the piston is tensioned by an inclined surface to realize the effect of fixing the axis of the inner cavity of the piston; the contour shape, size and inclination of the clamp positioning point are the same as those of the corresponding position of the side wall of the piston inner cavity, so that the shape of the positioning position on the clamp is completely matched with that of the piston inner cavity, and the positioning precision is effectively improved; under the condition that the actual size change of the side wall of an inner cavity of a piston blank is large, the clamp positioning element can automatically slide forwards under the action of spring force, and the inclined surface of the positioning element is always pushed to the draft inclined surface of the inner side wall of the piston, so that the inner side wall of the piston is always in a tensioned state, the size change of the blank is automatically adapted, and accurate and reliable positioning is ensured; therefore, the piston inner cavity wall thickness difference is controlled.

A folding knife having a blade pivoted from a closed position to a manual release open locked position with a combined apertured sliding release and locking arm. The sliding release and locking arm is mounted within the knife handle on a fixed guide pin within an arm opening being spring urged there against. Arm positioning pins extends in oppositely disposed relation to one another from the locking arm providing dual frame engagement within respective guide slots therein. Arm positional projections are engaged on a modified blade shank during operation moving the locking arm back and up then releasing to slide forward locking the blade in auto open use position until manual arm engagement by the user against the arm spring and blade spring for release and transitional closure. Arm access operation is available secondarily via pin access opening in the exterior handles for alignment operation.

The utility model discloses a data confidentiality anti-demagnetization storage device for software development. The data confidentiality anti-demagnetization storage device comprises a shell, a cabinet body, a placement bin and a bin outlet structure, according to the utility model, through the arrangement of the delivery structure, when the data hard disk needs to be taken out, the protection plate slides upwards, so that the convex block drives the driving wheel to rotate, the transmission gear rotates along with the driving wheel to drive the first crown gear, and then the transmission rod drives the second crown gear to rotate, so that the duplex gear rotates; at the moment, the toothed plate can drive the placement frame to slide forwards, so that the placement frame slides out of the placement bin, meanwhile, the placement frame can drive the data hard disk to be placed in the placement bin, so that the data hard disk is taken out of the bin so as to be conveniently taken by a user, and on the contrary, when the data hard disk is placed in the placement bin and the protection plate slides downwards, the placement frame can retract into the placement bin.

The I-shaped steel welding tool for green building construction comprises a machine tool, a conveying pipe and a workpiece, the machine tool is provided with a clamping and conveying assembly, the clamping and conveying assembly is used for conveying and clamping the workpiece, the machine tool is further provided with a positioning and clamping assembly, and the positioning and clamping assembly is used for clamping and fixing the two ends of the workpiece when the workpiece is welded. A cooling assembly is arranged on the machine tool and used for cooling the welding end of the workpiece when the workpiece is welded. According to the clamping device, the motor is started to drive the half gear to rotate so as to drive the first rack to slide on the first guide rod in a reciprocating mode, when gear teeth at the upper end of the first rack are meshed with the first gear, the two clamping plates slide oppositely to clamp a workpiece, and the gear teeth at the upper end of the first rack are shorter than the lower end of the first rack; and the half gear can drive the first rack to continuously slide forwards until the lug at the tail end of the first rack drives the whole mounting box and the workpiece to slide forwards.

The invention discloses an internet-of-things intelligent express cabinet facilitating taking, and relates to the technical field of intelligent express cabinets, the intelligent express cabinet comprises a base, a cabinet body is arranged at the top end of the base, the cabinet body is made of a metal material, a plurality of sets of rectangular grooves are formed in the cabinet body, and each set of rectangular grooves form a storage space for storing articles; a cabinet door is arranged at the opening end of the rectangular groove, a pop-up assembly facilitating placement or taking of articles is arranged in the rectangular groove, and when a user needs to take out the articles from the cabinet body, the cabinet door is opened, a first spring is in a compressed state in an initial state, and the first spring cannot release elasticity through limitation of a clamping assembly; the clamping assembly is controlled to release the elasticity of the first spring, so that the first spring rapidly restores to the original shape, the sliding block and the placing plate are pushed to slide forwards along the sliding groove, the placing plate and the express parcel are popped out together, and a recipient can easily take the parcel.

The utility model relates to the technical field of heating machines, and discloses an efficient and energy-saving heat pump heating machine which is characterized in that cylindrical buckles are arranged on the upper surface of a fixing block, sleeve blocks are arranged on the outer walls of the two sides of the top, close to the two cylindrical buckles, of a dustproof net plate respectively, a sliding frame is connected to the inner walls of the sleeve blocks in a sliding mode, and cambered surface clamping blocks are arranged at the two ends of the sliding frame; and abutting blocks are arranged on the inner walls of the two sides, close to the two cambered surface clamping blocks, of the sliding frame. Through the arrangement of the cylindrical buckle, the sliding frame and the clamping blocks, the design of the sliding frame has expansibility, when the sliding frame slides, the two cambered surface clamping blocks are driven to be pushed towards the two sides of the cylindrical buckle, the two cambered surface clamping blocks are separated from the limitation of the sleeve block and expand outwards, and through the mutual limitation of the cambered surface clamping blocks and the cylindrical buckle, the clamping effect is good. The two sides of the dustproof net plate are fixed to the outer walls of the two sides of the shell, when the dustproof net plate needs to be detached and cleaned, the two sliding frames slide forwards, the two cambered surface clamping blocks expand outwards, the cylindrical buckles are separated from limitation of the two cambered surface clamping blocks, and the flexibility of the heating machine is improved.

The utility model provides a toy launcher capable of launching a rubber band, which comprises a gun body shell, a front clamping step is arranged at the front end of the gun body shell, at least one rear clamping step is arranged on the upper side of the rear end of the gun body shell, and two ends of the rubber band are elastically tensioned and clamped on the front clamping step and the rear clamping step respectively; an inner cavity is formed in the gun body shell, a launching inner plate is arranged in the inner cavity, a limiting part is arranged at the front end of the inner cavity, the rear end of the inner cavity is communicated to the outside of the gun body shell, the launching inner plate can slide back and forth in the inner cavity, and when the launching inner plate slides backwards, a rubber band clamped on a rear clamping step can be lifted upwards; the rubber band falls into the rear clamping step of the previous stage or flies out of the limiting elasticity, and the launching inner plate can be manually reset to slide forwards into the inner cavity.

Riding saddle having a two-stage, additionally elastic girth for fastening on a horse. Due to the two-stage, preferably elastic girthing, the riding saddle has the advantage of a firm fit on the horse's back. It has shown that due to the girthing according to the invention, an otherwise identical saddle slides forward significantly less on the horse during riding.

The present invention discloses a vertical trough device for a pelletizing shaft furnace, which relates to the technical field of pelletizing shaft furnaces and includes a trough body, a material stacking member, a cooling water tank, and an air-cooling continuous discharge mechanism. The present invention arranges the material stacking member and the air-cooling continuous discharge mechanism on the trough body, and the output end of the cylinder drives the top pressure plate to move, drives the push rod and the mounting frame to slide forward synchronously along the mounting seat, so that the pellets can be discharged evenly and continuously. The discharge volume is flexibly adjustable by selecting an appropriate material stacking member model, and the purpose of maintaining a balance with the material distribution volume is achieved; by providing ventilation holes and guide grooves, and the guide grooves are non-through settings, and the curvature of the guide grooves matches the motion trajectory of the lower end of the corrugated material plate, and an air collecting pipe is provided to match the ventilation holes, so that the trough body is in a sealed condition during the working process, greatly reducing the phenomenon of dust spraying on site and reducing the labor intensity of on-site sanitation cleaning for operators.

The utility model discloses a forklift hopper tipping device which comprises a hopper body, and a tipping assembly used for tipping materials in the hopper body is arranged at the bottom end of the hopper body. When tipping operation needs to be carried out, firstly, the hopper safety pin is pulled out, the fork frame of the forklift is tilted forwards to enable the hopper body to have a certain inclination angle, at the moment, the carrier roller rotationally connected into the groove in the top end of the iron shoe of the forklift can drive the hopper body to slide forwards, and when the sliding distance exceeds half of the length of the iron shoe of the forklift, the hopper body is pulled out. When the hopper body overturns due to weightlessness, the limiting connecting rod reaches the tail end of the sliding groove through the limiting sliding groove and the sliding rod and does not move forwards any more, the hopper body is limited by the limiting connecting rod and does not incline forwards or slide downwards any more, and at the moment, material dumping is completed. And when returning is needed, the fork teeth only need to fall down to be lifted by the ground or an object to finish returning, and the device does not need to be pushed by electric power or hydraulic power and is convenient and rapid to mount and dismount.

The invention relates to a base capable of swinging and rotating, which comprises a base frame, a rotating seat arranged on the base frame, and two swinging assemblies which are detachably arranged on the rotating seat, can synchronously rotate along with the rotating seat and are positioned on two opposite sides of the rotating seat, each swing assembly comprises a supporting plate, a mounting plate and two connecting pieces, wherein the two ends of the two connecting pieces are correspondingly pivoted to the supporting plate and the mounting plate, and the two connecting pieces are arranged at intervals. The mounting plate is of an L-shaped structure and comprises a vertical connecting part and a horizontal mounting part, the bottom end of the vertical connecting part is pivoted with the connecting piece, the top end of the vertical connecting part is parallel to the rotating seat, and the horizontal mounting part is bent from the top end of the vertical connecting part to the direction far away from the connecting piece; a limiting mechanism used for limiting the swing amplitude of the connecting piece is arranged on the outer side wall of the supporting plate. The multifunctional chair can swing front and back and can also rotate, different use requirements are met, the problem of forward sliding can be avoided through the structure of the mounting plate, and the use comfort level is improved.

The present application relates to coal mine supporting technical field, specifically to a kind of lifting type supporting device for underground coal mine, including base, support column, mobile jack, hydraulic controller, protective beam, roof beam plate, support assembly, connecting assembly, moving assembly and contact zone;Support assembly extends outside roof beam plate in initial state, when supporting device needs to move forward, the support column is relieved, after the base and roof beam plate slide forward a standard step, the support column is raised and supported, the connecting assembly is disconnected, support assembly returns to inside roof beam plate, after moving assembly pushes support assembly forward a standard step, support assembly extends outside roof beam plate, and connecting assembly is connected with the connecting assembly of two side supporting devices, solve the problem that when the rock layer above is too loose, when hydraulic support removes support, the loose rock on top can not wait for the "stress arch" of adjacent frame to form completely, and instantaneously collapse.

The invention discloses a handheld detachable gate electric crank, which relates to the technical field of electric cranks and comprises a liquid clamping device, a connecting device, a retention device, a driving device and a heat dissipation device. According to the position fixing device, a position clamping shaft sleeve on a position clamping assembly is manually driven to slide forwards, at the moment, a connecting clamping block on a connecting conical column can make contact with a position clamping sliding groove, the connecting clamping block extrudes position clamping convex teeth outwards, the position clamping convex teeth drive a position clamping plunger to slide inwards through hydraulic oil in the position clamping shaft sleeve, and the position clamping plunger slides inwards; and the clamping plunger drives the rubber clamping plate to move inwards to clamp the fixed conical column, so that the temporary fixing function of the connecting device is realized. According to the hydraulic clamping device, the initial position of a hydraulic clamping column is adjusted by adjusting the amount of hydraulic oil in a hydraulic clamping barrel, and meanwhile, the hydraulic oil in the hydraulic clamping barrel further plays a buffering role on the hydraulic clamping column. A two-way motor on the heat dissipation device drives fan blades and a circulating ferrule to rotate synchronously through a hollow rotating shaft, and the circulating ferrule further drives a stirring column to stir cooling liquid in a heat dissipation sleeve.