48results about How to "Guaranteed deadlock" patented technology

The invention relates to a wind-driven generator, in particular to a yaw mechanism used on the wind-driven generator. The technical proposal provided by the invention is that annular pivoting supports which are mutually connected into a whole are arranged above an annular brake disc, the periphery of the pivoting supports is provided with teeth, and the invention is characterized in that: a reducer is arranged outside the pivoting supports, electric motors which are interconnected are arranged above the reducer, a yaw transmission gear of the reducer is meshed with the teeth on the pivoting supports, the axis of the yaw transmission gear is parallel to the center line of the pivoting supports; a plurality of bolts are arranged at the inner edge of the pivoting supports along the circumference direction of the pivoting supports, the axis of the bolts is also parallel to the center line of the pivoting supports; a train limit switch and a position transducer are further arranged outside the pivoting supports, a gear interconnected with the train limit switch is meshed with the teeth on the pivoting supports. The wind-driven generator of the invention can reduce the fatigue damage to a yaw gear box caused by frequent forward and reversing start.

The invention belongs to the related technical field of elastic structures, and discloses a rigidity-adjustable spring mechanism. The rigidity-adjustable spring mechanism comprises a screw rod, an inner barrel, an outer barrel, a spring and a base, wherein external threads are formed on the screw rod; a threaded hole is formed in the inner barrel and screwed with external threads of the screw rod, so that the screw rod and the inner barrel are in threaded connection; the screw rod rotates to adjust the distance between the screw rod and the base; a spiral groove is formed in the outer wall of the end, facing the base, of the inner barrel; the spiral groove and the spring form a spiral pair; the inner barrel rotates relative to the spring to change the working length of the spring so as to further adjust the rigidity of the spring; the other end of the spring is connected to the base; and the outer barrel is arranged outside the spring and the inner barrel in a sleeving manner, and used for clamping the spring and the inner barrel to prevent the spring from slipping off or used for loosening the spring to facilitate rigidity adjustment of the spring.

The invention relates to a motor vehicle door lock equipped with a locking mechanism (1, 2, 3), an actuation lever unit that acts on the locking mechanism (1, 2, 3) and includes a release lever (4), and a catch lever (10). The catch lever (10) blocks the locking mechanism (1, 2, 3) at least when acceleration forces of a given magnitude occur, e.g. in case of an accident (crash). According to the invention, the catch lever (10) blocks the locking mechanism (1, 2, 3) in the event of a crash while releasing the locking mechanism (1, 2, 3) only for normal opening operation.

The invention discloses a hydraulic control system of a drill loader. The hydraulic control system comprises a primary pump, a secondary pump, a first multi-way directional valve, a second multi-way directional valve, a pilot oil control valve unit, an anti-jamming valve unit, a pilot oil source valve unit, a track tensioning valve unit, a third multi-way directional valve, a first hydraulic pilot control valve unit, a second hydraulic pilot control valve unit, a first hydraulic pilot control valve device, a second hydraulic pilot control valve device, a third hydraulic pilot control valve device, a hand-operated directional valve, a first balance valve and a boom cylinder. The hydraulic control system of the drill loader disclosed by the invention has the advantages that as a multi-stage propulsion manner and impact pressures are set, the drill loader can adapt to different geological conditions, and initiative jamming prevention is effectively realized; when the jamming is caused, the hydraulic control system disclosed by the invention can control an impactor and a propulsion cylinder to switch into light impact and light propulsion operations, blast holes are repaired, and the jamming preventing effect can be effectively improved; and the hydraulic control system of the drill loader disclosed by the invention adopts a load-sensitive technique, so that the efficiency and accuracy of the hydraulic control system of the drill loader are improved.

The invention discloses a rigidity-variation robot. The rigidity-variation robot comprises a rigidity-variation device, a sealing device and a fluid injection device. The rigidity-variation device comprises an outer pipe body, an inner pipe body, an elastic filling body and an expansion bag body, the outer pipe body sleeves the inner pipe body, and a filling cavity is formed between the outer pipebody and the inner pipe body; the sealing device comprises a first sealing device body and a second sealing device body, the first sealing device body is connected with one end of the outer pipe bodyand one end of the inner pipe body and seals one end of the filling cavity, and the second sealing device body is connected with the other end of the outer pipe body and the other end of the inner pipe body and seals the other end of the filling cavity; the filling cavity is filled with the elastic filling body, and the expansion bag body is embedded in the elastic filling body; the output end ofthe fluid injection device penetrates through the first sealing device body or the second sealing device body and is communicated with the expansion bag body for injecting pressure fluid into the expansion bag body. The rigidity-variation robot can be bent, and the rigidity can be controlled.

The invention belongs to the technical field of brick clamps and particularly relates to a labor-saving brick clamp device for building engineering. The labor-saving brick clamp device comprises a limiting mechanism, a connecting mounting rod and a brick clamp supporting lug. The limiting mechanism is mounted on the lower side of one end of the connecting mounting rod, and the brick clamp supporting lug is mounted on the lower side of the other end of the connecting mounting rod. When people use a brick clamp designed by the invention, the brick clamp is pressed downwards along a brick duringusing, and at the moment, the brick extrudes triggering strips; and the triggering strips drive a triggering ring to rotate clockwise, and the triggering ring rotates, so that a triggering structure further moves close to one side of the brick clamp supporting lug while rotating, and finally, the triggering strips achieve the limiting effect on the brick. According to the brick clamp designed by the invention, through adjusting of the triggering structure, clamping force provided by a user for the brick clamp in the brick-clamping process can be reduced; hand soreness caused by the fact that the user provides the clamping force for the brick clamp for a long time in the brick-clamping process is weakened; and the working efficiency is improved, and the fatigue degree of the user is decreased.

The invention relates to the technical field of medical and health products, in particular to an intestinal canal traction ligator in laparoscopic surgery. The ligator comprises a ligating belt body,protruding thorns are bonded to the outer wall of one side of the ligating belt body at equal intervals, a groove is formed between every two adjacent protruding thorns on one side of the ligating belt body, one side of the outer part of the ligating belt body is sleeved with a ligating seat, a connecting belt is bonded to the outer wall of one side of the ligating seat, a traction ring is bondedto the outer wall of one end of the connecting belt, the outer wall of the traction ring is coated with a protective layer, a protruding thorn groove hole is formed in the ligating seat, the ligatingbelt body penetrates through the ligating seat to be embedded into the protruding thorn groove hole, and anti-skid lines are arranged on the two sides of the outer portion of the ligating seat at equal intervals. The ligator has the beneficial effects that: innovative surgical consumables required by the international mainstream laparoscopic surgery at present are simple and convenient to operate,the ligating belt body is provided with the anti-skid protruding thorns, loosening can be effectively prevented, the intestinal canal is sufficiently and tightly ligated, and the ligator conforms tothe tumor-free principle; the ligating belt body is a soft protruding thorn, so that the intestinal canal is not damaged; the ligating seat and the traction ring are designed to be anti-skid, tractiontension is sufficient, and surgical exposure is facilitated; and scales are arranged on the back of the ligating belt to facilitate accurate measurement of the excision range and guarantee the radical treatment effect. The ligator is made of a hot melting material, and is fused by heating so as to relieve ligating.

The invention relates to a rotary alignment clamping device for a shackling-unshackling back-up wrench for a workover treatment sucker rod and a using method. According to the technical scheme, the rotary alignment clamping device comprises a rotating base disc assembly, a guide clamping assembly, a lever type stress application assembly, a pull rod type displacement sensor assembly, a rotating power assembly and a control assembly, the rotating base disc assembly comprises an opening base disc and a plurality of rollers, the rollers are installed at the original back-up wrench position of a power wrench, and the opening base disc rotates through the rollers; clamping blocks of the guide clamping assembly move front and back in a guide rail, and the two clamping blocks clamp a spanner square diameter; and clamping sliding blocks are arranged at the front ends of the clamping blocks and can move relative to the clamping blocks. The rotary alignment clamping device has the beneficial effects that the rotary alignment clamping device is mounted on the back-up wrench of the power wrench of the workover sucker rod, is matched with the power wrench of the workover sucker rod for use, issuitable for shackling-unshackling operation on a small-diameter oil pipe, can realize automatic clamping of the sucker rod, improves the efficiency of the workover operation and further achieves automation of workover treatment.

The invention discloses a pressure cooking utensil, comprising: a pot body having a cooking cavity; a pot cover, separably connected with the pot body; a floater, movably arranged on the cooker coverbetween a first position and a second position, the floater enabling a gas circuit between the cooking cavity and the outside to be connected in the state of the first position, and the floater enabling the gas circuit between the cooking cavity and the outside to be disconnected in the state of the second position; a locking piece, movably arranged on the cooker cover, and when the floater movesfrom the first position to the second position, the locking piece being pushed to move so that the cooker cover and the cooker body can be locked by the locking piece. The embodiment of the inventiondiscloses a pressure cooking utensil. By arranging the movable locking piece, when the floater moves from the first position to the second position under the action of air pressure, the floater can push the locking piece to move, so that the locking piece locks the cooker cover and the cooker body, it is guaranteed that the cooker cover and the cooker body are locked after pressure is raised, a user is prevented from forcibly opening the cooker cover, and the use safety of the user is guaranteed.

The invention discloses a hand-operated window opener. The window opener is connected with a window frame and comprises a shell, a telescopic rack push rod and a rocker; the rocker is in transmission connection with the rack push rod through a transmission mechanism, and the transmission mechanism comprises a screw rod portion arranged on the rocker and a gear a in transmission connection with the screw rod portion; the gear a is connected with the rack push rod, one end of the rack push rod is connected with a window sash capable of being opened and closed, and the rear end of the rack push rod is connected with a gear b; a hand crank rotates to drive an internal thread to transmit, extension and shrinkage motion of a chain is achieved, the chain can control the opening angle and ensure the fixing position, and finally the aim of conveniently opening and closing a window is achieved; on the basis of the thread transmission and chain motion mechanical principle, the window sash is pushed in a hand-operated manner, the aim of facilitating window opening is achieved, the window opener is particularly applied to opening of the window which is inconveniently opened and closed by the old, and meanwhile the opening angle can be controlled, and locking is ensured.

The invention relates to the technical field of trains, and discloses a vehicle emergency evacuation door lock and a train thereof. The vehicle emergency evacuation door lock comprises a locking mechanism arranged on an evacuation door body and at least two zip-fastener mechanisms, wherein the zip-fastener mechanisms are distributed on one side or two sides of the door body in the height direction, and a vehicle body is provided with fixing columns at the corresponding positions of the zip-fastener mechanisms; each zip-fastener mechanism comprises a lock hook provided with a hook groove matched with the fixing column, the locking mechanism comprises a plurality of pull lines connected with the zip-fastener mechanism in a one-to-one correspondence mode, and the locking mechanism controls the lock hook to rotate by pulling the pull lines to be embedded into or disengaged from the fixing column so as to close or open the evacuation door. A zip-fastener shaft seat is connected with the lock hook through the pull wire, the pull wire drives the lock hook to be disengaged from or hooked into a limiting column by rotating the zip-fastener shaft seat, and rapid opening and closing of the emergency door are achieved. According to the lever principle, a U-shaped handle and a push block are arranged at the position of the locking mechanism, an arc-shaped connecting rod of the U-shaped handle drives the push block to easily achieve rotation of the zip-fastener shaft seat, time and labor are saved, and conditions are further provided for rapid opening and closing of the emergency door.

The invention discloses an intelligent braking device for hoisting a crane, which comprises a crane hanger and a sling mechanism. Between a pair of load-bearing walls of the crane hanger, a load-bearing roller is installed through a bearing assembly and connected in transmission with a hoisting drive mechanism. The roller is connected with the reverse self-locking mechanism through the transmission mechanism, which includes a transmission rod. The cloth is provided with n convex plates, and the inner wall of the cylindrical frame set on the outer end of the transmission rod is sequentially hinged with n limiting plates, so that each limiting plate must be in an inclined state to enter between adjacent convex plates at the corresponding position. In the present invention, when the hoisting driving mechanism stops, the linear driving mechanism controls the reverse self-locking mechanism, so that each limiting plate enters the gap between each convex plate to perform safety braking on the hoisting device, effectively reducing safety threats and making The lifting device moves more smoothly and smoothly.

The invention relates to the technical field of smart home, and discloses an automatic intelligent locking device utilizing an external force during door closing. The automatic intelligent locking device comprises an intelligent lock, wherein a manual lock is movably connected to the lower left portion of the interior of the intelligent lock; a manual gear is movably connected above the manual lock; a lock hole is movably and fixedly connected to the interior of the intelligent lock; locking rods are movably connected to the interior of the lock hole; a connecting rod is fixedly connected between the two locking rods; a manual handle is movably connected to the outer surface of the right side of the intelligent lock; and a fixed sliding rail is connected to the right side of the connectingrod in a stipulated mode. According to the automatic intelligent locking device, the control rod loses a blocking force of a positioning rod, and is reset under the action of a manual spring in a manual handle, so that an electric sliding block on the control rod is separated from an electrified guide rail in a fixed sliding rail, and a hydraulic cylinder and a power wheel stop operating, therebyautomatically locking a door, guaranteeing that the door is locked certainly when a user goes out, and avoiding the situation that properties at home from getting lost.

The invention discloses a raft foundation repairing and reinforcing method. The raft foundation repairing and reinforcing method comprises the steps that frame beams on the periphery of frame columns are supported through steel pipes and jacks; steel frames, steel corbels and the jacks are used for supporting the frame columns; laser range finders are arranged on the ground around the frame columns; each jack is slowly pressed to enable the frame columns and the frame beams to synchronously rise to a set height; a plurality of grouting holes are formed in the part, below the frame columns, of an original raft foundation, and grouting operation is carried out on settlement cracks in the original raft foundation and the suspended space of a foundation bottom plate; steel bar planting and steel bar binding are carried out on the basis of an original raft plate; the original raft foundation is heightened to form a raft heightened part; the raft foundation and the frame beam are repaired; the poured concrete is cured; and the jacks are unloaded, and the steel pipes, the steel frames and the steel corbels are removed. By means of the method, the problem that the raft foundation is settled and damaged due to overload can be solved, and it can be ensured that the repaired and reinforced raft foundation has the good bearing capacity and the stable service life.

The subject of the invention is a motor vehicle door lock equipped with a locking device (1, 2, 3) and also with an actuating lever with a release lever (4) acting on the locking device (1, 2, 3) mechanism and locking lever (10). The locking lever ( 10 ) locks the locking device ( 1 , 2 , 3 ) at least in the event of an acceleration force of a predetermined magnitude—for example in the event of an accident (collision accident). According to the invention, the locking lever (10) locks the locking device (1, 2, 3) in the event of a crash and only releases the locking device (1, 2, 3) during normal operation when it is opened.

The invention relates to a rotary alignment clamping device for a shackling-unshackling back-up wrench for a workover treatment sucker rod and a using method. According to the technical scheme, the rotary alignment clamping device comprises a rotating base disc assembly, a guide clamping assembly, a lever type stress application assembly, a pull rod type displacement sensor assembly, a rotating power assembly and a control assembly, the rotating base disc assembly comprises an opening base disc and a plurality of rollers, the rollers are installed at the original back-up wrench position of a power wrench, and the opening base disc rotates through the rollers; clamping blocks of the guide clamping assembly move front and back in a guide rail, and the two clamping blocks clamp a spanner square diameter; and clamping sliding blocks are arranged at the front ends of the clamping blocks and can move relative to the clamping blocks. The rotary alignment clamping device has the beneficial effects that the rotary alignment clamping device is mounted on the back-up wrench of the power wrench of the workover sucker rod, is matched with the power wrench of the workover sucker rod for use, issuitable for shackling-unshackling operation on a small-diameter oil pipe, can realize automatic clamping of the sucker rod, improves the efficiency of the workover operation and further achieves automation of workover treatment.

The electric shock prevention type control cabinet for the communication base station comprises a control cabinet body, a control cabinet door, an electric shock prevention device and a warning device, the control cabinet door is arranged on the front face of the control cabinet body, a control cabinet top is arranged on the top of the control cabinet body, the electric shock prevention device is arranged in the control cabinet body, and the warning device is arranged on the outer side of the control cabinet body. The electric shock prevention device comprises an electromagnetic hinge and a current sensor, the electric shock prevention device is arranged in the control cabinet to carry out real-time current monitoring on the interior of the control cabinet, and when the control cabinet body is monitored to have current, the control cabinet door is locked and placed through the electromagnetic hinge to open the cabinet door. And the warning device is started to warn the control cabinet all the time to prevent someone from approaching.

The invention provides tower high-altitude self-adaptive anti-falling equipment and a method thereof, and relates to the technical field of high-altitude operation equipment. The tower high-altitude self-adaptive anti-falling equipment comprises a longitudinal guide rail, a sliding seat, an abutting rod and a connecting rod pushing piece, and a locking seat is arranged on the outer side surface ofthe longitudinal guide rail; the sliding seat is slidably connected to the longitudinal guide rail; and the abutting rod is rotationally connected with the sliding seat, the upper end of the connecting rod pushing piece is hinged to the outer end of the abutting rod, a locking shaft is arranged at the lower end, and a sliding groove is formed in the sliding seat in a penetrating mode. According to the tower high-altitude self-adaptive anti-falling equipment, the longitudinal guide rail in sliding fit with the sliding seat is arranged on the outer side of a tower, when an operator climbs upwards, the inner end of the abutting rod is separated from the longitudinal guide rail under the upward traction effect of a safety rope, and the sliding seat slides smoothly; and when the operator misses the step, the safety rope is pulled downwards to enable the inner end of the abutting rod to abut against the outer side face of the longitudinal guide rail, locking of the sliding seat and the longitudinal guide rail is achieved, ands safety accidents caused by falling of the operators are avoided.

The present invention belongs to the technical field of radiotherapy devices and also discloses a radiotherapy device rotating machine frame support eccentric type adjustment device. The radiotherapydevice rotating machine frame support eccentric type adjustment device comprises a front end support device and a rear end support device, the front end support device and the rear end support deviceboth comprise a supporting base seat and a riding wheel support component, the riding wheel support component comprises a support box body and a riding wheel roller path component, the riding wheel roller path component comprises two sets of riding wheel support units, riding wheels in the front end support device are tapered riding wheels, the rear end support device uses cylindrical riding wheels, and riding wheel shafts are all eccentric shafts. The device has a certain self-alignment function, also can realize own axial limit, can perform fine adjustment in a vertical direction after initial installation, and thus reduces errors of rotation center vertical directions of the front and rear end support devices, so that the support devices have relatively high reliability and safety, andthe adjustment device is high in adjustment precision.

The invention discloses a hand-operated window opener. The window opener is connected with a window frame and comprises a shell, a telescopic rack push rod and a rocker; the rocker is in transmission connection with the rack push rod through a transmission mechanism, and the transmission mechanism comprises a screw rod portion arranged on the rocker and a gear a in transmission connection with the screw rod portion; the gear a is connected with the rack push rod, one end of the rack push rod is connected with a window sash capable of being opened and closed, and the rear end of the rack push rod is connected with a gear b; a hand crank rotates to drive an internal thread to transmit, extension and shrinkage motion of a chain is achieved, the chain can control the opening angle and ensure the fixing position, and finally the aim of conveniently opening and closing a window is achieved; on the basis of the thread transmission and chain motion mechanical principle, the window sash is pushed in a hand-operated manner, the aim of facilitating window opening is achieved, the window opener is particularly applied to opening of the window which is inconveniently opened and closed by the old, and meanwhile the opening angle can be controlled, and locking is ensured.

The invention discloses a notebook computer keyboard mistaken pressing prevention device convenient to trigger. The notebook computer keyboard mistaken pressing prevention device comprises a keyboardshell and a power switch, keys are evenly embedded in an upper side plate of the keyboard shell, a front end panel is horizontally and fixedly connected to the upper left side of the keyboard shell ina butt joint mode, a connecting plate is horizontally arranged on the lower side of the right end of the front end panel, and the right end of the connecting plate is connected with a lower left sideplate body of the keyboard shell through screws. The stop lever is correspondingly located under the rear side edge of the lower end of the key; therefore, the key cannot be pressed downwards; prevention of erroneous pressing, when the key is required to be normally used; the elastic rubber cover is pressed down under the action of palm gravity; the movable conducting strip is in contact with thefixed conducting strip, so that the micro motor and the power switch are connected with a circuit, then the micro motor drives the gear to rotate, the meshed rack slides towards the rear side in thehorizontal direction, the rack drives all the stop levers to move to the lower side of the gap between the keys at the corresponding positions, and the keys can be conveniently and normally knocked.

The invention relates to a whole-rod type sugarcane harvester frame, in particular to a telescopic whole-rod type sugarcane harvester frame. The frame solves the technical problems in the background technology and comprises a front-end frame assembly and a rear-end frame assembly, and the front-end frame assembly and the rear-end frame assembly are in sliding fit through a square tube guide rail and a square tube beam arranged in the square tube guide rail in a penetrating manner. The square tube guide rail is fixed to the rear side of the front-end frame assembly, the square tube beam is fixed to the front side of the rear-end frame assembly, a telescopic jack used for driving the square tube beam is connected between the front-end frame assembly and the rear-end frame assembly, and the front-end frame assembly is connected with a limiting jack with the telescopic direction parallel to the straight line where the square tube beam is located. The piston end of the limiting jack is fixedly connected with a check block which abuts against the front end of the square tube beam. A front-back split type frame structure is adopted, the frame is of a length-adjustable structure, and when sugarcane is harvested, the frame extends to facilitate storage of the sugarcane; and when a harvester turns after entering a sugarcane field or field edge harvesting, the frame is shortened, and the turning radius of the harvester is reduced.

The invention discloses an overturning type material aligning mechanism which comprises at least one polished shaft, sliding parts, a rotating tongue, a material aligning block and a polished shaft support. The polished shafts are connected with a workbench through the polished shaft support, the sliding parts are in sliding connection with the polished shafts, the sliding parts are provided with semi-closed open grooves for containing one end of the rotating tongue, and one ends of the sliding parts are arranged in the semi-closed open grooves. Through holes arranged on the polished shafts in a sleeving mode are formed in the sliding parts, and the rotating tongue is connected with the material aligning block used for aligning the materials. The overturning type material aligning mechanism has the advantages of being efficient, convenient, high in precision, free and flexible.

The invention discloses a rigidity-variation robot. The rigidity-variation robot comprises a rigidity-variation device, a sealing device and a fluid injection device. The rigidity-variation device comprises an outer pipe body, an inner pipe body, an elastic filling body and an expansion bag body, the outer pipe body sleeves the inner pipe body, and a filling cavity is formed between the outer pipebody and the inner pipe body; the sealing device comprises a first sealing device body and a second sealing device body, the first sealing device body is connected with one end of the outer pipe bodyand one end of the inner pipe body and seals one end of the filling cavity, and the second sealing device body is connected with the other end of the outer pipe body and the other end of the inner pipe body and seals the other end of the filling cavity; the filling cavity is filled with the elastic filling body, and the expansion bag body is embedded in the elastic filling body; the output end ofthe fluid injection device penetrates through the first sealing device body or the second sealing device body and is communicated with the expansion bag body for injecting pressure fluid into the expansion bag body. The rigidity-variation robot can be bent, and the rigidity can be controlled.

The invention provides a cement pipeline attaching device for a water conservancy project, and relates to the field of water conservancy projects. The cement pipeline attaching device for the water conservancy project comprises two cement pipes which are sequentially spliced, the outer surfaces of the connecting positions of the cement pipes are sleeved with rubber gaskets, through holes penetrating through the rubber gaskets are formed in the surfaces of the rubber gaskets, fixing mechanisms are clamped into the cement pipes, and sealing mechanisms are clamped to the ends, located in the cement pipes, of the fixing mechanisms. Every two adjacent sealing mechanisms are connected in a clamped mode through a connecting mechanism, the fixing mechanism comprises a fixing sleeve, and a gear ring is rotationally connected to the middle of the fixing sleeve. According to the cement pipeline attaching device for the water conservancy project, a control shaft is pushed to inject gas in a piston sleeve into an air bag ring so that the air bag ring can expand to be attached to the inner wall of a cement pipe, a sealant is injected into the cement pipe through a through hole in the lower portion, and the whole gap is filled with the sealant; the problem that sealant injection is inconvenient in the prior art is solved.

The invention relates to the field of automobile parts, and discloses an automatic lock of a push-pull automobile door. The automatic lock comprises a bottom plate, as well as a double-gear lock body, an unlocking mechanism, a first switch, a second switch, a third switch, a ratchet, a first transmission pair, a first paddle, a controller and a motor which are arranged on the bottom plate, wherein the double-gear lock body comprises a three-jaw lock piece and a lock body transmission mechanism. According to the lock, the automobile door is gently pushed and closed to allow the three-jaw locking piece to rotate; first gear locking is realized; the motor controls the first transmission pair to drive the first paddle to push the three-jaw locking piece to continuously rotate to automatically realize second gear locking after the first gear locking; even if the force of closing the door is very small, the automatic second gear locking can be realized as long as the first gear locking can be ensured; the automobile door is locked; the safety during travelling is ensured; and the damage to the automobile door is reduced.

The present invention provides a new type of anti-falling device, which includes a horizontally arranged main shaft and a second locking mechanism, the end of the main shaft is connected with the second locking mechanism, and the main shaft includes a safety belt winding area, a second A locking mechanism and a connecting mechanism, the first locking mechanism includes an outer card shaft integrally formed with the main shaft and a sleeve sleeved on the outside of the outer card shaft, an inner card shaft is arranged inside the sleeve, and the inner card shaft The inner diameter of the shaft is larger than the outer diameter of the outer card shaft. The main shaft also includes a rebound mechanism arranged at the head end for controlling the return of the main shaft. The end of the main shaft is connected to the second locking mechanism through a connecting mechanism. The first locking mechanism and the second locking mechanism cooperate to achieve double locking of the main shaft, ensuring the safety of high-altitude operations and reducing the occurrence of falling accidents. The invention is simple in structure, convenient and practical, has double anti-falling systems, can increase the safety of high-altitude operations, reduce falling accidents, and has diversified uses.