74results about How to "Movement restriction" patented technology

The invention belongs to the manufacturing field of a numerical control device and relates to a multiaxial linkage series-parallel, which comprises a bed body, a moving platform, a joint type swinging head on which a spindle is arranged, three branched chains and a worktable on which a cut workpiece is arranged; wherein, a prismatic pair connection is achieved between the bed body and the worktable, the joint type swinging head on which the spindle is arranged is fixedly connected with the moving platform, the three branched chains are respectively connected between the bed body and the moving platform so as to form a spatial parallel closed-chain mechanism with the bed body and the moving platform and the spatial parallel closed-chain mechanism is used for realizing a freedom of two-dimensional movement, the worktable is used for realizing a freedom of one to two dimension, the joint type swinging head is used for realizing a freedom of zero to two dimension, and the compound motion of the worktable, the spatial parallel closed-chain mechanism and the joint type swinging head can realize at least a triaxial linkage control. The device has simple structure, reasonable layout, high stiffness, easy control, large work space and high machining accuracy, and can work with being placed vertically or horizontally, thus satisfying the requirements for multiaxial linkage numerical control machining of parts with complex curved surfaces.

The dynamic balance measuring instrument includes driving motor, driving belt, vibration measuring support, vibration measuring sensor and phase sensor. It features the vibration measuring support comprising two parallel vibration mechanisms, the driving belt driven with motor and installed between the two parallel vibration mechanisms in parallel, the vibration mechanism including base seat with hole and rack with lower end stretched into the hole. The dynamic balance measuring instrument has also air source. The hole inner wall of the base seat has several ventilating holes communicated to the air source. The rack has its lower end suspended inside the hole in the base seat, and the vibration sensor is mounted on the rack. The present invention is suitable for use in high precision, especially super high precision, dynamic balance measurement.

The invention belongs to the field of stereo garages, and particularly relates to an intelligent lifting carrier of a stereo garage. The intelligent lifting carrier comprises a carrying frame and at least one transition plate, wherein the carrying frame comprises two longitudinal beams, and the transition plates are driven by a power device to move along the two longitudinal beams. The lower sides of the two ends of each transition plate are respectively provided with a guide base, a holding rod used for holding a vehicle tire is fixedly installed at the outer end of each guide base on the side away from the longitudinal beams, the transition plates drive the holding rods to move longitudinally along the longitudinal beams by driving the guide bases to move longitudinally, the transition plates hinder the inner ends of the guide bases on one side close to the longitudinal beams from moving longitudinally and enable the outer ends of the guide bases to rotate by driving the guide bases to ascend and descend, and the outer ends of the guide bases rotate to drive the holding rods to rotate. A running track is simplified, machining difficulty is reduced, and installation precision is improved; through ingenious lifting, motion of front guide pillars is limited, and rear guide pillars are made to rotate, so that the holding rods are unfolded or folded.

The invention discloses a preparation method of a modified polymer substrate solid dye laser medium, and relates to a preparation method of a laser medium, which solves the problem of short service life (poor light stability) of liquid dye in the solution state. The method comprises the following steps of: 1. treating methyl methacrylate; 2. preparing a mixture B; 3. preparing a mixture D; and 4.solidifying a mixture D, and annealing and machining the solidified mixture D to obtain the modified polymer substrate solid dye laser medium. The slope efficiency of the output characteristic curve of the modified polymer substrate solid dye laser medium is 31.7-43.2%.When the volume percent concentration of ethanol in the mixture B in the step 2 in the preparation process is 10%, the light stability of the modified polymer substrate solid dye laser medium reaches the highest, the output is only lowered to be 84.5% of the initial output after pulse pumping 100 thousand times, and the corresponding normalized light stability is larger than 25GJ / mol.

The invention provides an elevator speed limiter. A rope wheel and a car synchronously move through a steel wire rope; a ratchet wheel limits a self rotating angle through a limiting device. When the car stops at a certain floor, a linkage device is started, so that the ratchet wheel is in linkage with the rope wheel; at the moment, once a car sliding phenomenon occurs, the limiting device firstly limits the rotating range of the ratchet wheel; at the moment, as the ratchet wheel is in linkage with the rope wheel, the rotation of the rope wheel is also limited, and the rope wheel and the car synchronously move through the steel wire rope arranged on the rope wheel in a tensioning manner; after the rotation of the rope wheel is limited, the steel wire rope of the speed limiter lifts and pulls a safety clamp operating handle, a safety clamp brakes the elevator car, and the motion of the car is also limited, so that the effect of controlling car sliding is realized. According to the elevator speed limiter, a phenomenon in the prior art that the car cannot stop due to the simple control of braking of a traction machine (as the secondary braking of the traction machine is not tight) can be effectively avoided.

The invention relates to a high-strength creep-resistant polyester industrial yarn and a preparation method thereof. The preparation method comprises the following steps of carrying out solid phase polycondensation and tackifying on modified polyester, and then carrying out spinning winding and coordination treatment to obtain the high-strength creep-resistant polyester industrial yarn, wherein the coordination treatment is performed at 80-100 DEG C for 60-72 hours; a coordination agent is AgNO3, FeCl2, CuCl2 or NiCl2; a polyester chain segment of the prepared high-strength creep-resistant polyester industrial yarn comprises a terephthalic acid chain segment, an oxalic acid chain segment and a 2-(4-pyridine) terephthalic acid chain segment, and the 2-(4-pyridine) terephthalic acid chain segments of different polyester chain segments are coordinated through metal ions (Ag<+>, Fe<2+>, Cu<2+> or Ni<2+>); the molar ratio of the terephthalic acid chain segment to the 2-(4-pyridine) terephthalic acid chain segment is 1: (0.03-0.05); and an N atom on pyridine of the 2-(4-pyridine) terephthalic acid chain segment participates in coordination. According to the invention, the metal ions and 2-(4-pyridine) terephthalic acid are coordinated, so that the creep degree of polyester fiber is greatly reduced.

The invention relates to a release device for the hydraulic clutch actuation of vehicles, said device comprising a slave cylinder arranged concentrically around a transmission input shaft, the annular piston of said cylinder being axially displaceable inside a housing, being connected to a clutch release bearing and being arranged radially outside said release bearing. At least one stop element is proviced in order to restrict the axial displacement of the annular piston. According to the invention, the clutch release bearing that is connected to the annular piston can be brought axially into contact with the stop element.

The invention discloses a semi-submersible oil storage platform system for well drilling. The semi-submersible oil storage platform system for well drilling comprises a semi-submersible main platform and a plurality of floating sub-platforms, wherein the floating sub-platforms are movably connected with the main platform through connecting arms, and motion of the floating sub-platforms is coupled with motion of the main platform. Due to the fact that the motion of the floating sub-platforms is coupled with the motion of the main platform in a deep sea environment with severe wind wave conditions, multi-freedom-degree motion of the main platform can be greatly reduced, the semi-submersible oil storage platform system for well drilling can have good adaptability, and the self-maintenance capacity of the semi-submersible oil storage platform system for well drilling under the storm condition is improved. Due to the fact that the floating sub-platforms in the four directions of the central main platform can play a role in storage of crude oil, the oil storage capacity of a semi-submersible oil storage platform for well drilling is greatly improved. Due to the fact that fuel compartments or fresh water tanks can also be arranged in the floating sub-platforms, the space of the main platform is effectively saved. Due to the fact that the floating sub-platforms are far away from the main platform, better operation safety is achieved.

The invention provides a bicycle folder, comprising a front folding box and a back folding box, wherein a rotation shaft base is arranged on one side of the front folding box; a rotation shaft sleeve is arranged on one side of the back folding box; the rotation shaft base and the rotation shaft sleeve are hinged together; a first raised tooth is arranged on the other side of the front folding box opposite to the rotation shaft base; a second raised tooth is arranged on the other side of the back folding box opposite to the rotation shaft sleeve; the bicycle folder further comprises a folding buckle and a spring; the folding buckle comprises a front segment for pushing against the spring; a first handle is arranged on one end of the folding buckle opposite to the front segment; a groove for limiting movement of the first raised tooth and the second raised tooth is arranged on one face of the folding buckle; and the spring is arranged on the back folding box. The invention also provides a bicycle containing the bicycle folder. The bicycle folder and the bicycle containing the folder are reasonable in structure design, convenient in usage and low in cost, and can be used for a long period.

The invention discloses a tool hammer for art. A hammer sleeve comprises an open end and a closed end, a spring washer is arranged on the lower edge of the open end of the hammer sleeve, one end of an elastic hammer is sleeved with the hammer sleeve, a hammering surface is arranged at the other end of the elastic hammer, a spring is arranged between the inner bottom surface of the closed end of the hammer sleeve and one end, sleeved with the hammer sleeve, of the elastic hammer, a staggered rod is arranged on the inner bottom surface of the closed end of the hammer sleeve, a staggered cone is arranged at one end, sleeved with the hammer sleeve, of the elastic hammer, two inclined positioning grooves are formed in the outer wall of the elastic hammer, the connecting line of two points, located in a cross section of the elastic hammer, of the positioning grooves passes through the circle center of the cross section, one end of each positioning rod is inserted in the positioning groove, the other end of each positioning rod is fixed on the hammer sleeve, an elastic piece and fixing rods are arranged at a middle section of a handle, middles of the fixing rods are disconnected, lantern rings are arranged in the middles of the fixing rods and are in threaded connection with the fixing rods, the tail end of the handle warps upwards, and a hook is arranged on the handle. The hammer is particularly applicable to three-dimensional art works such as clay sculptures and the like, is used for knocking out irregular pits on soft art materials, and is beneficial to presentation of disordered aesthetics.

The invention belongs to the technical field of plastic bag processing and particularly discloses a heat sealing process of a plastic packaging bag. The plastic packaging bag is heat-sealed by a heatsealing machine. The process comprises the following steps: (1) a heating device is started and used for heating hydraulic oil in a hydraulic column; (2) the distance between an upper pressing knife and a lower pressing knife is adjusted so that the plastic packaging bag can be placed on a workbench; (3) the to-be-heat-sealed plastic packaging bag is placed on the workbench, and the to-be-heat-sealed position is aligned with a through hole; (4) a motor is started and shut down after rotating for one circle; (5) whether the heat-sealed plastic packaging bag meets requirements is checked; (6) the steps (3)-(5) are repeated when the next plastic packaging bag is heat-sealed. With the adoption of the scheme for heat sealing of the plastic packaging bag, the heat sealing pressure acting on theplastic packaging bag can be adjusted according to the thickness of the plastic packaging bag.

The invention discloses an art tool hammer. A hammer sleeve of the art tool hammer is provided with an open end and a closed end, a spring washer is arranged at the lower edge of the open end of the hammer sleeve, one end of an elastic hammer is nested in the hammer sleeve, a hammering surface is arranged at the other end of the elastic hammer, a spring is arranged between the inner bottom surface of the closed end of the hammer sleeve and the end, which is nested into the hammer sleeve, of the elastic hammer, a staggered rod is arranged on the inner bottom surface of the closed end of the hammer sleeve, a staggered cone is arranged at the end, which is nested into the hammer sleeve, of the elastic hammer, two positioning grooves are formed in the outer wall of the elastic hammer and are provided with vertical upper sections and oblique lower sections, a connecting line of every two points, which are positioned on the cross section of the elastic hammer, of the positioning groove crosses the circle center of the cross section of the elastic hammer, one end of each positioning rod is inserted into the corresponding positioning groove, the other end of each positioning rod is fixed onto the hammer sleeve, the elastic hammer can move towards the inside of the hammer sleeve after the art tool hammer hammers onto an object, a clip is arranged in a middle section of a downwardly oblique handle, the tail end of the handle is curled up, and the handle is provided with a hook. The art tool hammer has the advantages that the art tool hammer is particularly applicable to stereoscopic artwork such as clay sculptures, can be used for forming irregular pits on soft art materials by means of knocking and is favorable for showing aesthetics of disorder.

The invention discloses a drainage instrument for the thoracic surgery department, and relates to the technical field of drainage devices.The instrument comprises a supporting plate and a negative pressure drainage device assembly, wherein the negative pressure drainage device assembly is fixedly connected to the top of the supporting plate; a drainage tube is installed on the top of the negative pressure drainage device assembly, and one end of the drainage tube is fixedly connected with a fixing tube in a sleeved mode. A threaded pipe is fixedly connected to the fixed pipe in a sleeving mode, a rotating cylinder is connected to the threaded pipe in a threaded mode, a first pressing ring is arranged at the bottom of the rotating cylinder, and a plurality of first spring rods which are evenly distributed are fixedly connected to the bottom of the first pressing ring. According to the device, the drainage tube is inserted into a surgical wound, the main fixing base is buckled on the body of a patient, and the joint of the wound and the drainage tube is shielded; then a rotating cylinder is rotated to drive a second pressing ring to press a main fixing seat, so that a first adhesive ring is adhered to the body of the patient, and the drainage tube is fixed; meanwhile, the wound is sealed, and air leakage is prevented.

The invention relates to the technical field of fuel filling and oil and gas recovery, in particular to a refueling gun and refueling equipment. The refueling gun comprises a switch shaft component connected with a spindle and a gas path valve component and used for controlling the refueling gun to be opened or closed; the switch shaft component comprises an outer shaft and an outer shaft sleeve;the outer shaft can reciprocate inside the outer shaft sleeve; the outer shaft sleeve comprises a sealing piece arranged between the inner wall of the outer shaft sleeve and the outer wall of the outer shaft; at least one sealing groove is formed in the inner wall of the outer shaft sleeve; and the sealing piece is embedded in the sealing groove. According to the refueling gun, the positions of the sealing piece and the sealing groove are changed, so that piston type sealing is changed into pull rod type sealing, the wear of the sealing piece and the frictional resistance to the sealing pieceare reduced, the service life of the sealing piece is effectively prolonged, and the hand feeling for use of the refueling gun is improved.

The invention relates to a vibration shaking bed. The vibration shaking bed comprises a box body, a tray and a shaking mechanism, wherein the tray is arranged above the box body; a middle part of thetray is hinged to the box body; the shaking mechanism comprises a motor, a connecting rod and a driving rod; the motor is fixed in the box body; the connecting rod is mutually perpendicular to an output shaft of the motor; one end of the connecting rod is arranged on the output shaft of the motor in a sleeving manner while the other end of the connecting rod is hinged to one end of the driving rod; a guiding column is arranged at the other end of the driving rod; a first guiding groove matched with the guiding column is arranged on the tray; the shaking mechanism also comprises a guiding rod fixed on the box body; the guiding rod is arranged on one side, away from the tray, of the driving rod; a second guiding groove matched with the guiding column is formed in the guiding rod; the guidingcolumn is also arranged in the second guiding groove in an embedding manner. The tray of the vibration shaking bed disclosed by the invention is shaken leftwards and rightwards, so that materials canbe shaken uniformly; compared with an existing tray which does single horizontal direction movement and circular motion, the tray of the vibration shaking bed disclosed by the invention has the advantages of larger vibration amplitude and better uniform mixing effect; moreover, time is saved.

A medical rehabilitation wheelchair comprises a frame. The frame is provided with a backrest and two supporting rods on the back of the backrest. The two supporting rods are connected fixedly through a rod arranged horizontally, and are provided with fitting plates which fit the backrest. The backrest is provided with two connector plates both provided with through holes; the two supporting rods respectively penetrate the through holes. The outside of each supporting rod is sleeved with a spring, the upper end of the spring fits the lower surface of the corresponding connector plate, and the lower end of the spring fits a limit block on the supporting rod. Limit rods are arranged at the bottom ends of the supporting rods; the frame is provided with a limit disc which is provided with at least two limit slots; the limit rods penetrate the limit slots; and the limit slots are distributed uniformly along the circumference of the limit disc. The outer walls of the limit rods are coated with rubber protector layers. The medical rehabilitation wheelchair is convenient to use as a user only needs to pull the supporting rods upwards and set the limit rods in the proper limit slot; besides, the medical rehabilitation wheelchair is high in stability, low in manufacturing cost and suitable to promote.

The invention provides a physical training pull-up training device. The physical training pull-up training device comprises a base, vertical plates are fixedly installed on two sides of the top surface of the base, first through holes are formed in the top ends of the opposite surfaces of the two vertical plates, a same horizontal first screw rod is movably installed in the two first through holes through bearings, two ends of the first screw rod penetrate through the corresponding first through holes, and opposite threads are arranged at two ends of the first screw rod. A motor is fixedly installed at the top end of the right side surface of the vertical plate which is located on the right side of the base, a rotary shaft of the motor faces right horizontally, a first gear is fixedly installed at the right end of the rotary shaft of the motor, a second gear is fixedly installed at the right end of the first screw rod, and the first gear meshes with the second gear. The physical training pull-up training device is simple in structure and convenient to use and operate. The physical training pull-up training device can meet using requirements of different training modes of different trainers, can enable muscle to be trained better, and cares a muscle group more comprehensively.

The invention relates to a water vapour plasma burner (7) for cutting a workpiece (21), comprising a feed line (8) for a liquid (9), a heating device (22) and an evaporator (23) for forming a gas (20) from the liquid (9), a cathode (24) detachably connected to a movably mounted piston rod (25) and a nozzle (26) with an outlet opening (27) for the gas (20), and relates to a method of wear detection and process control in the case of such a water vapour plasma burner (7). To create such a water vapour plasma burner (7) with detection of worn parts, at least one temperature sensor (28) is arranged in the piston rod (25), said sensor being connected to a control device (4), so that the recorded temperature values can be used as a basis for ascertaining wear of the cathode (24) and the nozzle (26) and so that the control of a water vapour plasma cutting process can be influenced.

The invention relates to a probe structure for circuit board detection. The probe structure for circuit board detection comprises: an assembly box with a hole in the bottom and a metal sleeve which is matched with the hole formed in the assembly box and is movably arranged on the assembly box, wherein the metal sleeve is also provided with a limiting hole, and the two sides of the assembly box are also provided with through holes; a limiting block, wherein the limiting block is matched with the limiting hole and is movably arranged in the assembly box; a probe assembly, wherein the probe assembly is movably arranged in the metal sleeve, and the probe assembly is used for detecting a circuit board; a clamping mechanism, wherein the clamping mechanism is connected with the limiting block, and the clamping mechanism drives the limiting block to enter the limiting hole when the metal sleeve moves towards the interior of the assembly box; elastic components, wherein the elastic components are movably and symmetrically arranged in the assembling box and are connected with the clamping mechanism; and a driving mechanism which is matched with the metal sleeve and is connected with the clamping mechanism.

The present invention provides for an electrical switching apparatus operating mechanism opening assembly wherein the toggle assembly stop / kicker pin has been separated into a kicker pin and a stop pin. By separating the functions of the stop / kicker pin into separate pins, the kicker pin may now be located at the pivot point of the associated link. Further, the kicker pin and the stop pin are now disposed upon a cradle assembly as opposed to an elongated link. The cradle assembly further supports one of the toggle assembly links. Thus, rotation of the cradle assembly causes the toggle assembly to move. The operating mechanism opening assembly is configured so that, when an associated latch assembly latch plate assembly is released, the cradle assembly rotates so that the toggle assembly is moved away from a closing assembly closing device.

The invention discloses a self-lifting 3D printer for a wall of a high-rise building and a construction method of the self-lifting 3D printer, and belongs to the technical field of manufacturing of the 3D printer for the building. A lifting mechanism of the 3D printer comprises guide rails, upper fixators, lower fixators, electro-hydraulic thrusters and stand columns, wherein the guide rails are fixed on two opposite side surfaces of the building wall; the upper fixators, the lower fixators and fixed bases of the electro-hydraulic thrusters can be mounted on the guide rails in a sliding manner; the lower ends of the stand columns are fixedly connected with the upper fixators and the lower fixators; a movable support frame is fixedly supported at the tops of the stand columns; piston rods of the electro-hydraulic thrusters are fixedly connected with the upper fixators, and brakes are arranged on the upper fixators, the lower fixators and the fixed bases. The structure of the 3D printeris optimally designed, so that self-lifting printing of the wall of the high-rise building can be realized, the printing system has better stability, and printing quality and printing construction safety of the wall of the building can be effectively guaranteed.

The application provides a device for rolling up a safety belt. The device comprises a rolling-up device frame, a reel and a vehicle sensing assembly, wherein the vehicle sensing assembly is used to detect a vehicle acceleration; a sway arm is disposed between the vehicle sensing assembly and the reel, and the sway arm can lock and recover rotation of the reel; the device for rolling up the safety belt also comprises a control cam which can limit motion of the sway arm; the device for rolling up the safety belt also comprises a clamping claw and a sway toothed plate, and the sway toothed plate can be rotated relative to a sensor fixation base of the vehicle sensing assembly; one end of the clamping claw can be rotated under driving of the reel and can be slid relative to the reel when the clamping claw is blocked; and the other end of the clamping claw can be meshed with the sway toothed plate. The device for rolling up the safety belt provided by the application comprises the control cam, so the safety belt can be prevented from being locked when locking is not needed.

The invention discloses an edge anti-tilting mechanism during rolling of a plastic sheet, which comprises a workbench. Bases are welded at four corners of the bottom of the workbench, clamping mechanisms are arranged on two sides of the workbench, a rolling mechanism is arranged in the workbench, a pressing groove is formed in the upper surface of the interior of the workbench, and a blocking mechanism is arranged on the outer side of the workbench. A movable plate is pushed to move downwards in a first movable groove, the movable plate drives a limiting plate to compress a first spring downwards at the same time, the limiting plate can limit the movement range of the movable plate, the limiting plate can prevent the movable plate from excessively moving upwards, and the movable plate can return to the initial position under the action of the first spring after machining is completed; the movable plate drives the clamping blocks to downwards clamp the two ends of the plastic plate, the problem that the two sides of the plastic plate tilt up during rolling is solved, meanwhile, the plastic plate is prevented from moving in the rolling process, and the rolling quality of the plastic plate is improved.

The invention discloses a semi-submersible oil storage platform system for well drilling. The semi-submersible oil storage platform system for well drilling comprises a semi-submersible main platform and a plurality of floating sub-platforms, wherein the floating sub-platforms are movably connected with the main platform through connecting arms, and motion of the floating sub-platforms is coupled with motion of the main platform. Due to the fact that the motion of the floating sub-platforms is coupled with the motion of the main platform in a deep sea environment with severe wind wave conditions, multi-freedom-degree motion of the main platform can be greatly reduced, the semi-submersible oil storage platform system for well drilling can have good adaptability, and the self-maintenance capacity of the semi-submersible oil storage platform system for well drilling under the storm condition is improved. Due to the fact that the floating sub-platforms in the four directions of the central main platform can play a role in storage of crude oil, the oil storage capacity of a semi-submersible oil storage platform for well drilling is greatly improved. Due to the fact that fuel compartments or fresh water tanks can also be arranged in the floating sub-platforms, the space of the main platform is effectively saved. Due to the fact that the floating sub-platforms are far away from the main platform, better operation safety is achieved.

The invention relates to a pan-tilt buffer structure, a pan-tilt device and a quadruped robot system.The pan-tilt buffer structure comprises a limiting part, an elastic part and a buffer part, the limiting part is provided with a limiting groove, and the limiting part is used for being connected with the back of a shell of a quadruped robot; the base is arranged in the limiting groove, the base disc is elastically connected with the bottom wall of the limiting groove through the first elastic piece, and the base disc is in clearance fit with the bottom wall of the limiting groove. In the working process of the cradle head buffering structure, vibration of the cradle head in the vertical direction can be well limited through the elastic effect of the first elastic pieces, meanwhile, the limiting pieces can play a role in limiting movement of the base disc, the mounting stability of the cradle head is improved, loosening and damage to a circuit board and components in the cradle head caused by long-term bumping are avoided, and the service life of the cradle head is prolonged. The working reliability of the holder device is guaranteed, the service life of the holder device is prolonged, and then the working reliability and working efficiency of the quadruped robot are improved.

The invention discloses a damping steel bar cutting device used for constructional engineering. The damping steel bar cutting device comprises a cutting machine body. The front face and the back faceof the bottom of the cutting machine body are movably connected with supporting blocks through insertion rods. The bottoms of the supporting blocks are fixedly connected with bottom plates. Fixing clamping blocks are welded to the left sides of the tops of the bottom plates, and limiting grooves are formed in the left sides and the right sides of the tops of the fixing clamping blocks. Movable clamping blocks are movably connected in inner cavities of the limiting grooves. Pull rods are fixedly connected to the tops of the movable clamping blocks, and the upper portions of the outer sides of the pull rods are sleeved with pressure chambers. Through grooves are formed in the pressure chambers, and sliding blocks are movably connected to the two sides of inner cavities of the through grooves. The tops of the sliding blocks are fixedly connected with springs, and the tops of the pull rods penetrate the pressure chambers and are fixedly connected with handles. Rubber pads are arranged below the bottom plates, and an illumination lamp is arranged at the front end of each bottom plate. By means of the damping steel bar cutting device used for constructional engineering, the function of fixing steel bars conveniently is achieved, and meanwhile the damping function and the night work facilitating function are achieved.

To prevent impulsive force from acting on a gear engaging surface of a gear-type transmission means, when the operation at a predetermined operation position of a driven member is regulated, without affecting the operation controllability of the driven member, in a driving device that includes the gear-type transmission means provided between the driven member, which is supported so as to be freely operated on a casing, on which an electric motor is mounted, and the electric motor, and an operation position regulation means provided on the casing to regulate the operation position of the driven member. The operation position regulation means 82 comprises a stopper 83 that abuts against the driven member 71 at its predetermined operating position of the driven member 71 is supported in a floating state to a casing 68 with an elastic member 84, provided between the stopper and the casing 68.

The invention relates to the technical field of lift truck safety and discloses an anti-stall falling device for an electric power rush-repair lift truck. The anti-stall falling device comprises an anti-stall falling device main body; a placement groove is formed in the inner wall of a fixed disc; speed reduction blocks are movably mounted in the placement groove; springs are fixedly connected tothe inner wall of the placement groove; a rotating disc is movably mounted in the fixed disc; telescopic rods are fixedly mounted on the outer wall of the rotating disc; and stop levers are fixedly mounted on the outer wall of the rotating disc. The telescopic rods are jacked up through oil in the rotating disc, when driving blocks on a connecting rope drive the rotating disc to rotate, the extending telescopic rods can abut against the speed reduction blocks in the replacement groove to rotate, and therefore the stop levers on the rotating disc can slide over the outer wall of the speed reduction blocks in an attached mode; the ascending and descending speed of the connecting ropes is reduced by means of friction force of the stop levers and the speed reduction blocks, and the effect of decelerating and buffering in the ascending and descending process of the lift truck is achieved.