46results about How to "Implement synchronous actions" patented technology

The invention provides a dual rotor wind tunnel test platform. The dual rotor wind tunnel test platform comprises a power resolver (2), a rotor mounting frame (12) and two rotor driving mechanisms. The two rotor driving mechanisms are both installed on the rotor mounting frame (12) and are respectively arranged at two opposite sides of the power resolver (2), each rotor driving mechanism comprises an angle decelerator (7), a rotor decelerator (9) and a rotor transmission shaft (10), the power resolver (2) drives the angle decelerators (7) to synchronously move through two first transmission shafts (6), the angle decelerators (7) drive the rotor decelerators (9) to synchronously move through second transmission shafts (8), and the rotor decelerators (9) drive the rotor transmission shafts(10) to synchronously move relative to the rotor mounting frame (12). The dual rotor wind tunnel test platform is applied to dual rotor wind tunnel tests, synchronous motions of the dual rotors are achieved, a relatively-low wind tunnel obstruction degree can be maintained, interference on the flow field is low, and the reliability of the wind tunnel test result is improved.

The invention discloses a contact position indicating device of an automatic change-over switch. The contact position indicating device is characterized by consisting of a first transmission unit, a second transmission unit, an output shaft and an indicating element; each of the first transmission unit and the second transmission unit respectively comprises a rack, a transmission gear, a first switching on / off gear and a second switching on / off gear; the transmission gear is meshed with the rack; the second switching on / off gear and the transmission gear are fixedly connected or are positioned and connected in the rotation direction; the second switching on / off gear and the first switching on / off gear are matched; the output shaft connects the second switching on / off gear of the first transmission unit and the second switching on / off gear of the second transmission unit coaxially, and one end of the output shaft is connected with the indicating element so as to drive the indicating element so that the indication element has three gear working positions, namely all common spare power supply switching off, common power supply switching on and spare power supply switching on. The indicating device provided by the invention is directly related to drive mechanisms of contact systems of a common power supply unit and a spare power supply unit, the synchronous action of the indicating element and a contact is realized, and the action situation of the contact is reflected truly.

The invention provides an air brake valve for a locomotive, which is characterized by comprises a valve body, a cam box connected with the valve body, and an air exhaust valve arranged at the bottom of the cam box; a hand shaft is arranged in the cam box, the center of the hand shaft is provided with a mandril, and the hand shaft is sleeved with a first cam and a second cam; an interlock switch group is arranged in the cam box, and the interlock switch group comprises a first micro switch controlled by the first cam, and a second micro switch controlled by the second cam; and a positioning plunger controlled by the first cam and an action plunger controlled by the second cam are arranged in the valve body. Because the first micro switch and the second micro switch can be combined to produce four electric signals corresponding to the release position, the operation position, the neutral position and the brake position of the air brake valve, after the electric signals are transmitted to a computer, the computer can control a driven locomotive according to the four electric signals, so that the driven locomotive keeps synchronous action with a main control locomotive.

The invention discloses a medicine dispensing process of a ground sorting type intelligent medicine dispensing control system. A medicine dispensing machine sends out medicine, the medicine falls into first conveying devices arranged at the bottom through a buffer device, and then the medicine enters to a second conveying device. When the medicine enters to the second conveying device, a basket with bottom up is sent to the tail end of the second conveying device from a basket sending device, and reaches a lifting platform of a hoister before the medicine reaches the lifting platform, each basket is provided with a radio frequency identification chip, and a radio frequency identification device is arranged at the position, corresponding to each basket, of the bottom of the hoister. When the lifting platform rises to the upper end of the hoister, a control terminal gives an order, a basket pushing device pushes baskets which contain medicine of unfinished prescriptions to sorting platforms at the left end and the right end, sorting of alien-packed medicine continues until the prescriptions are accomplished, or the basket pushing device pushes baskets which contain medicine of finished prescriptions to a medicine dispensing platform. According to the technical scheme, the medicine dispensing process of the ground sorting type intelligent medicine dispensing control system is high in working efficiency, systematic, and capable of accurately and rapidly carrying out medicine dispensing.

The invention provides an air brake valve for a locomotive, which is characterized by comprising a cam box, a valve body and an air exhaust valve; a hand shaft is arranged in the cam box, the center of the hand shaft is provided with a mandril, and the hand shaft is sequentially sleeved with a first cam, a second cam, a third cam and a fourth cam from up to down; a conversion plunger is arranged in the valve body, preset distance is pre-reserved between the conversion plunger and the first cam, and a positioning plunger and an action plunger are also arranged in the valve body; the air brake valve for the locomotive also comprises an interlock switch group; and the interlock switch group comprises a first micro switch controlled by the first cam, a second micro switch controlled by the second cam, a third micro switch controlled by the third cam, and a fourth micro switch controlled by the fourth cam. The invention can transmit the signals of the four working positions of the air brake valve to a computer, and the computer controls a driven locomotive to realize the synchronous action with a main control locomotive.

The invention discloses a ground sorting type intelligent medicine dispensing control system. The ground sorting type intelligent medicine dispensing control system comprises a medicine dispensing machine controlled by a control terminal, and further comprises first conveying devices which are used for receiving medicine allocated by the medicine dispensing machine. Then the medicine enters a second conveying device. A basket sending device which can be used for sending baskets used for containing the medicine is arranged above the tail end of the second conveying device, and baskets sent by the basket sending device reach a hoister before the medicine reaches the hoister. The hoister can lift the baskets containing the medicine to the upper end of the hoister, baskets containing medicine of finished prescriptions are pushed to a medicine dispensing platform through a basket pushing device arranged at the upper end of the hoister, or baskets containing medicine of unfinished prescriptions are pushed to sorting platforms through the basket pushing device, medicine dispensing continues so as to accomplish the prescriptions. The ground sorting type intelligent medicine dispensing control system is high in working efficiency, systematic and capable of accurately and rapidly carrying out medicine dispensing.

The invention discloses a basket dispensing device. The basket dispensing device is provided with a frame with an upper opening and a lower opening. Synchronous gears are arranged on the side surface of the frame. Each synchronous gear is provided with a plurality of basket dispensing teeth arranged regularly, the outer edges of the basket dispensing teeth protrude inwards more than the frame protrudes, and the synchronous gears can rotate towards the inner side of the frame. By adopting the technical scheme, automatic and fast basket overturning and dispensing can be achieved, and the basket dispensing device has the advantages of being fast and efficient. According to an optimized technical scheme, the frame is provided with a small window, and the basket dispensing teeth penetrate through the small window so that the outer edges of the basket dispensing teeth can protrude inwards more than the frame protrudes.

The invention relates to an operating mechanism for a residual current circuit breaker in an enclosed shell. The operating mechanism comprises a switch handle, a synchronizing bar, a linking piece and an operating rod, wherein the switch handle is positioned outside the enclosed shell; the synchronizing bar is connected with operating handles of the residual current circuit breaker and allows the operating handles to perform synchronous actions; the linking piece is connected with the switch handle and the synchronizing bar and links the switch handle and the synchronizing bar; and one end of the operating rod is fixed with the synchronizing bar, and the other end of the operating rod is provided with an action contact which is contacted with or separated from a leakage switch along with the movement of the operating handle of the residual current circuit breaker. Therefore, linkage of the switch handle to the operating handle can be realized through the connection relation of components, namely the leakage switch can be synchronously switched on along with the switch-on of the circuit breaker when the switch handle is operated and the operating handle of the residual current acts.

The invention discloses a lifting machine which comprises a lifting platform. The lifting platform can slide up and down along lifting sliding rails. A bucket pushing device is further arranged at the upper end of the lifting machine. A bucket containing accomplished prescription drugs can be pushed to a drug dispensing table by the bucket pushing device, or a bucket containing unaccomplished prescription drugs can be pushed to sorting tables by the bucket pushing device for continuous sorting and drug dispensing so as to accomplish a prescription. According to the technical scheme, the lifting machine has the advantages that rapid lifting is achieved, and separated pushing of the accomplished prescription drugs and the unaccomplished prescription drugs is achieved. According to the preferable technical scheme, the bucket pushing device is provided with a left pushing rod and a right pushing rod, wherein the bucket can be pushed to a left sorting table and a right sorting table by the left pushing rod and the right pushing rod. The left pushing rod and the right pushing rod are arranged on a left pushing rod sliding rail and a right pushing rod sliding rail. The bucket pushing device is further provided with a front pushing rod, wherein the bucket can be pushed to a front drug dispensing table by the front pushing rod. The front pushing rod is arranged on a front pushing rod sliding rail.

The invention discloses a lamination apparatus, which has a large panel. A lamination platform is installed on the large panel. The lamination platform is supported above the large panel through a lamination lifting driving mechanism. The lamination platform is positioned above the large panel and is parallel to the large panel. A cam driving mechanism, a pressure claw mechanism, a pressure claw forwarding-withdrawing switching mechanism and a vertical lifting mechanism are also installed on the large panel. According to the invention, the cam driving mechanism replaces a traditional cylinder for driving, the vertical lifting mechanism is supported on the outer circumference of a curvy cam through a curve roller, the pressure claw advance and retreat switching mechanism is connected to the curvy cam through a transmission bar, the cam driving mechanism drives pressure claws to move up and down, and the curvy cam and the transmission bar drive the pressure claws to move side to side. Thus, synchronous action of the four pressure claws can be realized and the accuracy is high. During processing of laminations with different models, rapid regulation is carried out according to different models of the laminations and through different meshing position between a shift fork and a toothed bar. Thus, time is saved.

The invention discloses a pneumatic crawler-type forklift and a method. The forklift comprises a walking crawler assembly, a forklift door frame assembly, a vehicle chassis and an operation table, the operation table is located above the front portion of the vehicle chassis, the vehicle chassis is installed on the walking track assembly, a pneumatic motor and a gear oil pump are installed in the vehicle chassis, an output shaft of the pneumatic motor is connected with an input shaft of the gear oil pump, an oil conveying pipeline of the gear oil pump is separately connected with a lifting oil cylinder and an inclined oil cylinder, a multi-way reversing valve set is arranged on the oil conveying pipeline of the gear oil pump, the operation table comprises a supporting frame and a multi-way reversing valve control rod, and the multi-way reversing valve control rod is connected with the multi-way reversing valve set. According to the pneumatic crawler-type forklift provided by the embodiment of the invention, a crawler-type traveling mechanism is adopted, hydraulic transmission is achieved, the gradeability is high, braking is reliable, and the pneumatic crawler-type forklift adapts to severe road surfaces of underground tunneling roadways.

The invention relates to a hydraulic control system and a hinge dam assembly. The hydraulic control system comprises a first branch circuit which comprises a flow-distributing synchronous valve. The flow-distributing synchronous valve comprises a cavity, a rotary shaft arranged in the cavity rotatably and a plurality of rotors arranged on the rotary shaft; the rotors are axially distributed in a spaced manner along the rotary shaft and rotate synchronously along with the rotary shaft, the flow-distributing synchronous valve is provided with a first opening and a plurality of second openings where media circulate and which communicate to the cavity, the second openings communicate to hydraulic cylinders one by one, and the rotors and the second openings are formed correspondingly one by one; when the rotors separately convey the media from the first opening to the second openings, the hydraulic cylinders generate first strokes; in the first strokes, the hydraulic cylinders drive hinge dams to ascend synchronously; and when the rotors convey the media from the second openings to the first opening, the hydraulic cylinders generate second strokes; and in the first strokes, the hydraulic cylinders drive hinge dams to ascend synchronously.

The invention relates to a segment crane and a shield tunneling machine. The segment crane comprises two hydraulic oil cylinders and a hydraulic control system, wherein the hydraulic control system comprises two hydraulic loops; each hydraulic loop is provided with a rodless cavity oil way, a rod cavity oil way and a reversing valve; each reversing valve communicates the rodless cavity oil way and the rod cavity oil way of the corresponding hydraulic loop with an oil supply oil way and an oil return oil way so as to control the hydraulic oil cylinder to stretch and retract through the reversing valve; the reversing valve is provided with a locking middle position and used for controlling and locking the rod cavity oil way and the rodless cavity oil way of the corresponding hydraulic loop so as to lock the hydraulic oil cylinder; and a synchronous speed control valve is arranged on the rodless cavity oil way and / or the rod cavity oil way on the two hydraulic loops so as to realize synchronous action of the two hydraulic oil cylinders. Different control modes are selected according to actual working requirements, the two hydraulic oil cylinders can be controlled to act synchronously, the single hydraulic oil cylinder can also be controlled to act, and the actual working requirements are met.

The invention relates to an automatic anchor bolt thermal shrinkage packaging production line. The automatic anchor bolt thermal shrinkage packaging production line comprises a feeding unit, a thermal shrinkage unit and a material receiving unit; the thermal shrinkage unit comprises a thermal shrinkage rack, a heating device and an active conveying mechanism; the thermal shrinkage rack is provided with a thermal shrinkage supporting surface; the active conveying mechanism is used for pushing an anchor bolt to move forwards; the heating device is used for heating thermal shrinkage pipes at the left end and the right end of the anchor bolt in the forward movement process of the anchor bolt; the feeding unit is provided with a feeding mechanism; the material receiving unit is used for collecting the anchor bolt subjected to thermal shrinkage processing; and a discharging mechanism is arranged corresponding to the material receiving unit and is used for transferring the anchor bolt subjected to thermal shrinkage processing to the material receiving unit. The anchor bolt is driven by the active conveying mechanism to move forwards, and the thermal shrinkage pipes at the two ends of the anchor bolt are heated by the heating device, so that thermal shrinkage fastening can be realized; and automatic operation is conveniently realized, manual operation is replaced, the labor intensity of workers and the labor cost are reduced, the thermal shrinkage processing efficiency of the anchor bolt is effectively improved, and anchor bolts subjected to thermal shrinkage processing can be conveniently collected in a centralized mode.

The invention discloses a vehicle-mounted road surface detection robot which comprises a detection trolley, a camera module arranged at the top of the detection trolley and used for shooting images of the ground, and a ground penetrating radar detection mechanism towed on the detection trolley. The ground penetrating radar detection mechanism comprises a ground penetrating radar, an anti-collision guide plate and a ground penetrating radar carrying mechanism, wherein the ground penetrating radar and the anti-collision guide plate are arranged perpendicular to the advancing direction of the detection trolley, and the ground penetrating radar carrying mechanism is connected with the detection trolley, the ground penetrating radar and the anti-collision guide plate. The camera module comprises a camera fixing frame arranged on the top of the detection trolley and two D cameras which are arranged on the two sides of the camera fixing frame in a one-to-one correspondence mode and detachably connected with the camera fixing frame. Through the scheme, the vehicle-mounted road surface detection robot has the advantages of being simple in structure, reliable in action, convenient to connect, good in anti-collision performance and the like, and has very high practical value and popularization value in the technical field of pavement detection.

The invention discloses an energy-saving satellite bin combined refrigeration house. The energy-saving satellite bin combined refrigeration house comprises a material area and further comprises a water storage tank arranged below the material area, a sliding groove formed below the water storage tank, in communication with the water storage tank and internally provided with xylitol, a water pressing piece arranged in the sliding groove and a water pressing piece driving structure used for driving the water pressing piece to move; a water spraying area with a plurality of water spraying heads is arranged above the material area, the water spraying heads are connected with the sliding groove through water pipes, a vertically-through through hole is formed in the water pressing piece, the water pressing piece driving structure comprises a pressing head, a sealing part is arranged on the pressing head and used for blocking the through hole when the water pressing piece is pressed to act. According to the energy-saving satellite bin combined refrigeration house, when the refrigeration house is powered off, low-temperature cooling water formed by dissolving xylitol in water repeatedly scours food to reduce the temperature of the food, so that the food in the refrigeration house is prevented from deteriorating and rotting due to high temperature, sufficient repair time can be won formaintenance personnel, and the cooling water sprayed out of the water spraying heads flows through the material area and returns to the water storage tank again; the cooling water can be recycled, thewater supplement requirement is small, water resource waste is little, xylitol serves as a non-toxic organic matter, and the problem of food safety cannot be caused.

The invention discloses a contact position indicating device of an automatic change-over switch. The contact position indicating device is characterized by consisting of a first transmission unit, a second transmission unit, an output shaft and an indicating element; each of the first transmission unit and the second transmission unit respectively comprises a rack, a transmission gear, a first switching on / off gear and a second switching on / off gear; the transmission gear is meshed with the rack; the second switching on / off gear and the transmission gear are fixedly connected or are positioned and connected in the rotation direction; the second switching on / off gear and the first switching on / off gear are matched; the output shaft connects the second switching on / off gear of the first transmission unit and the second switching on / off gear of the second transmission unit coaxially, and one end of the output shaft is connected with the indicating element so as to drive the indicating element so that the indication element has three gear working positions, namely all common spare power supply switching off, common power supply switching on and spare power supply switching on. The indicating device provided by the invention is directly related to drive mechanisms of contact systems of a common power supply unit and a spare power supply unit, the synchronous action of the indicating element and a contact is realized, and the action situation of the contact is reflected truly.

The invention discloses an emergency alarm display device for a railway vehicle. The emergency alarm display device comprises a connecting rod crank assembly, a transmission shaft and a display part.The two connecting rod crank assemblies are arranged on the two sides of the outer end wall of the train correspondingly and comprise first cranks, second cranks and connecting rods hinged between thefirst cranks and the second cranks. The transmission shaft is arranged between the two connecting rod crank assemblies, and the two ends of the transmission shaft are fixedly connected with the corresponding second cranks. The two display components are connected with the corresponding connecting rod crank assemblies respectively. A rubber windshield is arranged on the outer end wall of the trainand located between the two connecting rod crank assemblies, and the transmission shaft is located above the rubber windshield. When a force is applied to any one connecting rod crank assembly, the other connecting rod crank assembly can be driven to synchronously act through the transmission shaft, so that synchronous action of the display components on the two sides is achieved, a worker can observe the action of the display components from the two sides of a train, and the emergency alarm braking condition of the train can be accurately judged.

The present invention relates to a parallel switch. This parallel switch includes a first disconnecting switch and a second disconnecting switch which are stacked in a vertical direction; the first disconnecting switch is provided with a first driving module and at least one first contact module which are arranged side by side in a left-and-right direction; the second disconnecting switch is provided with a second driving module and at least one second contact module which are arranged side by side in a left-and-right direction; a connecting assembly is arranged between the first contact module located at the farthest end of the first driving module and the second contact module located at the farthest end of the second driving module; and the connecting assembly is connected with the mainshaft of the first contact module and the main shaft of the second contact module, so that synchronous action of the first contact module and the second contact module can be realized. The synchronism of the operation of the parallel switch is good. With the parallel switch adopted, a user can be prevented from performing misoperation when the contact modules are welded.

A mechanical synchronizer of that invention relates to the field of aircraft component, in particular to the field of multi-rotor unmanned aerial vehicles (UAVs), in particular to a mechanical synchronizer, comprise a synchronizer housing, at least two transmission shafts with one end connected to the synchronizer housing, and the other end of the transmission shaft is connected to a propeller power input shaft; The synchronizer housing at least comprises a redirecting mechanism capable of synchronously redirecting the power of the power input shaft of the synchronizer housing to the at leasttwo transmission shafts; The at least two transmission shafts are hyperbolic variable diameter transmission shafts; The invention has the advantages of simple structure, convenient use, low manufacturing cost, simple transmission, safety and reliability, and realizes the synchronous change direction transmission of the power transmission direction by using the change direction mechanism arranged in the synchronizer box, thereby realizing the synchronous operation of the propeller.

The invention provides a micro circuit breaker. The micro circuit breaker comprises a conductive part which is arranged between a static contact and a bimetallic strip and can be connected with the static contact and the bimetallic strip, the conductive part is provided with a flexible conductive section which can be connected with the bimetallic strip and a moving contact plate which is integrally connected with the flexible conductive section, and the moving contact plate is formed into a plate shape by pressing one part of the same flexible conductor where the flexible conductive section islocated. Namely, one part of the flexible conductor is used for being pressed into a moving contact plate, and the other part is directly connected with a bimetallic strip. The micro circuit breakeris advantaged in that compared with the mode that in the prior art, the moving contact is stamped on the copper plate firstly, then the moving contact is connected with the flexible conductive part ina welded mode, the processing procedure is simpler, production cost is reduced, defects of pseudo soldering, high temperature rise and the like caused by welding are overcome, reliability is higher,and the service life is prolonged.

The invention discloses a line erecting device for wind power generation, relates to the field of wind power. For solving the problems that part of existing line erecting devices for wind power generation are poor in fixing effect, prone to toppling and difficult in line installation, the erecting device comprises a mounting base for installing the erecting device, a fixing mechanism for fixing the device is arranged on the upper surface of the mounting base, a mounting mechanism for mounting device parts is arranged above the mounting base, a winding mechanism for adjusting the mounting height of the device is arranged in the mounting mechanism, a lifting mechanism is arranged at the top of the mounting mechanism, and a mooring rope is arranged between the lifting mechanism and the winding mechanism. The device is novel in structure, the fixing effect of the device can be improved, the device is prevented from toppling over, meanwhile, the flexibility of the device is improved, the device is more convenient to install, and the practicability of the device is improved.

The invention relates to a vacuum heat sealing machine. The vacuum heat sealing machine comprises a bracket, a movable box body, a fixed box body, a bag pressing mechanism, a bag guide mechanism, a bag sealing mechanism and a vacuumizing device; the movable box body and the bracket are slidingly connected front and back; when the movable body is closed with the fixed box body, the movable box body and the back side wall of the fixed box body surround closed heat sealing opening space; the bag pressing mechanism is positioned on the right side of the heat sealing operation space; the bag guide mechanism is positioned at the upper part in the heat sealing operation space; a bag opening pressing guide channel of the bag pressing mechanism and a bag opening sealing guide channel of the bag guide mechanism are both vertically arranged and extend left and right, and the two are aligned front and back and consistent in height; a heat sealing electrode of the bag sealing mechanism is positioned on the front side below the bag opening sealing guide channel; and an exhaust port of the vacuumizing device communicates with the heat sealing operation space. The vacuum heat sealing machine solves the problem of unqualified bag vacuum, reduces the labor intensity, and obviously improves the heat sealing efficiency.

The invention discloses a control mechanism of a noodle bowl supply device of a small instant noodle making and selling machine. The control mechanism comprises a motor, a pull rod, a control block, arotating disc, a rolling wheel and a fixing frame, wherein the motor is arranged on the fixing frame, an output shaft of the motor penetrates through the fixing frame and is connected with the rotating disc, the control block is arranged on the outer side of the rotating disc and is used for being connected with a noodle bowl feeding mechanism, a cam groove is formed in the inner side face of therotating disc, the pull rod is arranged between the rotating disc and the fixing frame, one end of the pull rod is connected with the fixing frame through hinge joint, the other end of the pull rod is connected with the rolling wheel, and the rolling wheel is arranged in the cam groove in the rotating disc. The control mechanism provides power for a bowl positioning mechanism and the noodle bowlfeeding mechanism, the motor drives the rotating disc to rotate, the rotating disc is connected with the bowl positioning mechanism and the bowl feeding mechanism at the same time, so that the synchronous action of the noodle bowl positioning mechanism and the noodle bowl feeding mechanism is realized, and only one noodle bowl can be sent out at each time of the noodle bowl feeding mechanism.

The invention discloses a novel film pressing printing machine. The novel film pressing printing machine comprises a conveying assembly and a film pressing assembly, wherein the film pressing assembly is arranged above the conveying device; the film pressing assembly comprises film pressing rollers, an adjusting roller mechanism and a roller adjusting driving mechanism; the adjusting roller mechanism is movably arranged on the top of the film pressing assembly in the vertical direction, and an adjusting roller is rotationally arranged on the upper side of the adjusting roller mechanism; the number of the film pressing rollers is two, the two film pressing rollers are arranged at the bottom of the film pressing assembly in a front-back mode, and the axial directions of the two film pressing rollers are both arranged in the left-right direction; and the roller adjusting driving mechanism is provided with a lifting driving end which is in transmission connection with the adjusting roller mechanism and enables the adjusting roller mechanism to move up and down. According to the novel film pressing printing machine, a printing film can be recycled through the film pressing assembly, so that waste is reduced, and cost is saved. The novel film pressing printing machine can be applied to the field of printing.

The invention discloses an elevator emergency rescue mechanism. The elevator emergency rescue mechanism comprises a traction machine unlocking device, a worm wheel, a worm and a rescue system, when atraction machine is powered off, the traction machine unlocking device acts, thereby causing an electromagnetic braking mechanism of the traction machine to release the braking of the traction machinethrough a digging rope; the worm wheel is coaxially connected to a traction wheel; the worm is meshed with the worm wheel to form a locking mechanism of the traction wheel; the rescue system comprises a driving element which can drive the worm to rotate, and an emergency power supply for supplying power to the driving element; when an elevator is in normal operation, the rescue system keeps the speed ratio of the worm to the worm wheel synchronized with the transmission ratio of the worm to the worm wheel; when the rescue is needed, the rescue system depends on the emergency power supply to rotate the worm, and thus, the traction wheel is driven to rotate through the worm wheel, the lift car approaches to the level to achieve the self-help rescue for passengers. The elevator emergency rescue mechanism can realize the self-help rescue of the passengers, can effectively reduce the maintenance cost of the rescue system, and can greatly improve the safety of the elevator in the event of abnormal conditions such as power failure.