Elevator lifting mechanism capable of slowly descending when motor is out of control

Abstract

The invention relates to the technical field of elevator protection, and discloses an elevator lifting mechanism capable of slowly descending when a motor is out of control, the elevator lifting mechanism comprises a carrier plate, a driving turbine, a brake and a cable, the driving turbine is mounted on the outer wall of the carrier plate, the brake is mounted on the top of the carrier plate, and the cable is in transmission connection with the outer wall of the driving turbine; the bottom of the brake is attached to the outer wall of the driving turbine, and the driving turbine comprises a trigger assembly arranged in the carrier plate. When an annular clamping plate is not extruded by a brake, a second spring elastically stretches, so that a first sliding plate does not limit a T-shaped sliding plate through a trapezoidal groove any more, an annular toothed plate is not clamped and can slide out, and therefore decelerated motion is carried out, and a triggering assembly detects the brake pressure of the outer wall of the driving turbine through the brake; the braking mode can be replaced in time when the braking force of the brake is insufficient, the braking efficiency is improved, the annular toothed plate extends out of the driving turbine, and meanwhile the distance needed by braking of the brake can be shortened.

Description

Technical Field

[0001] The invention relates to the technical field of elevator protection, and in particular to an elevator lifting mechanism which can descend slowly when a motor is out of control. Background Art

[0002] Traditional elevator lifting mechanisms usually rely on the coordinated work of drive wheels and brakes to achieve normal operation and braking. The drive wheel, as the power source, drives the cable to pull the elevator car up and down, and the brake is responsible for braking the drive wheel when necessary to control the start and stop and running speed of the elevator. However, in actual use, this conventional braking system has many hidden dangers.

[0003] The brake itself may have insufficient braking force due to long-term frequent use, wear and aging of mechanical parts or improper maintenance. Once the brake fails to brake the drive wheel in a timely and effective manner, the drive wheel will be out of control during the operation of the elevator, especially when it is in a high-speed lifting state, and the running speed of the cable cannot be effectively controlled. The elevator car will face a huge risk of overspeeding or falling, posing a threat to the safety of passengers.

[0004] The existing braking system lacks an effective redundant mechanism to deal with sudden brake failure. When the brakes fail, the entire elevator lifting system has almost no backup means to immediately intervene and assist in braking and speed control. It can only passively wait for rescue. During this period, the elevator car may continue to accelerate due to loss of control, further increasing the degree of danger.

[0005] Therefore, an elevator lifting mechanism is proposed which can slowly descend when a motor loses control. Summary of the invention

[0006] The object of the present invention is to provide an elevator lifting mechanism which can slowly descend when a motor is out of control, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: an elevator lifting mechanism capable of slowing down when a motor is out of control, comprising a carrier plate, a driving wheel, a brake and a cable, wherein the driving wheel is mounted on the outer wall of the carrier plate, the brake is mounted on the top of the carrier plate, the cable is connected to the outer wall of the driving wheel, and the bottom of the brake is attached to the outer wall of the driving wheel; The driving turbine includes a trigger assembly arranged inside the carrier plate, and the trigger assembly includes an annular clamping plate symmetrically slidably connected to the outer wall of the driving turbine, and the two annular clamping plates are fixedly connected to the first slide plate on the side close to each other, and the outer wall of the trigger assembly is fixedly connected to a fixing seat, and the annular clamping plates are symmetrically distributed on both sides of the fixing seat, and a second spring is fixedly connected between the fixing seat and the annular clamping plates, and a T-shaped slide plate is slidably connected through the inside of the fixing seat, and the inside of the T-shaped slide plate is symmetrically provided with trapezoidal grooves, and a first spring is fixedly connected between the side of the T-shaped slide plate located outside the fixing seat and the fixing seat.

[0008] Preferably, one end of the first slide plate away from the annular clamp plate is slidably connected to the inside of the trapezoidal groove, the inside of the trapezoidal groove is beveled, and the side of the trapezoidal groove away from the annular tooth plate is a contraction area. When the first slide plate is located on the side of the trapezoidal groove away from the annular tooth plate, the second spring is in an elastic contraction state.

[0009] Preferably, the interior of the driving turbine includes a sliding assembly, and the sliding assembly includes an annular gear plate symmetrically slidably connected to the interior of the driving turbine, a third spring is fixedly connected between the side of the annular gear plate close to the interior of the driving turbine and the inner cavity of the driving turbine, the side of the annular gear plate close to the interior of the driving turbine is symmetrically rotatably connected to the first ratchet plate, the inner cavity of the driving turbine is symmetrically provided with ratchet grooves matched with the first ratchet plate, the side of the annular gear plate close to the central axis of the driving turbine is fixedly connected to the first rack, the first racks are slidably connected to the interior of the driving turbine, the center of the inner cavity of the driving turbine is rotatably connected to the first gear, and the two first racks are meshed with the first gear.

[0010] Preferably, a torsion spring is sleeved on the rotational connection between the first ratchet plate and the outer wall of the annular tooth plate, and the torsion force of the torsion spring is exerted to make the first ratchet plate engage with the ratchet groove. The outer wall of the first ratchet plate is inclined, and the engagement of the first ratchet plate with the ratchet groove enables the first ratchet plate to slide only in the direction away from the driving wheel.

[0011] Preferably, an auxiliary transmission assembly is provided on the outside of the carrier plate, and the auxiliary transmission assembly includes a special-shaped gear rod symmetrically rotatably connected to the inside of the carrier plate and located below the driving turbine, the special-shaped gear rods are all meshed with the annular gear plate, the outer wall of the carrier plate is fixedly connected to a socket electrically connected to the driving turbine, the outer wall of the carrier plate is vertically slidably connected to a special-shaped plug located below the socket, the inner wall of the special-shaped plug is symmetrically provided with first tooth grooves distributed in a linear array, the outer wall of the carrier plate is symmetrically rotatably connected to a gear shaft, the outer wall of the carrier plate is slidably connected to a U-shaped frame, the outer wall of the U-shaped frame is symmetrically provided with second tooth grooves distributed in a linear array, the special-shaped plug is meshed with the gear shaft through the first tooth groove, the U-shaped frame is meshed with the gear shaft through the second tooth groove, the bottom of the U-shaped frame is slidably connected to a slide, and the outer wall of the slide is symmetrically provided with third tooth grooves distributed in a linear array.

[0012] Preferably, the slide is slidably connected to a second slide plate on a side away from the carrier plate, and the second slide plate is fixedly connected to a groove plate on a side away from the carrier plate. The outer walls of the special-shaped gear rods are provided with triangular grooves distributed in a ring array, and the two special-shaped gear rods are connected by a transmission chain, and the inner ring of the transmission chain is evenly and fixedly connected with convex teeth matching the triangular grooves. A gear shaft is installed on the outer wall of the carrier plate and below the special-shaped plug, and a backup motor is driven and installed on the outer wall of the carrier plate, and the backup motor is meshed with the special-shaped gear rod, and the backup motor is electrically connected to the sensor.

[0013] Preferably, both sides of the top of the outer wall of the U-shaped frame are fixedly connected with a first arc plate, which limits the U-shaped frame when the gear shaft and the U-shaped frame are engaged, and both sides of the bottom of the outer wall of the slide are fixedly connected with a second arc plate, which limits the slide when the slide and the special-shaped gear rod are engaged, and both sides of the convex teeth of the inner ring of the transmission chain are inclined surfaces.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the annular clamping plate is not squeezed by the brake, the elastic extension of the second spring makes the first slide no longer limit the T-shaped slide through the trapezoidal groove, so that the annular toothed plate is not clamped and can slide outward, thereby performing deceleration movement. The trigger component detects the braking pressure of the outer wall of the driving turbine through the brake, and can change the braking mode in time when the braking force of the brake is insufficient, thereby improving the braking efficiency. The annular toothed plate extends to the outside of the driving turbine, and at the same time can shorten the spacing required for the brake to brake, increase the friction between the brake and the driving turbine, effectively slow down the rotation speed of the driving turbine and slow down the speed of the elevator when moving; 2. When the special-shaped gear rod rotates, the transmission chain drives the slide to slide horizontally, so that the slide can always keep meshing with the side of the special-shaped gear rod that rotates upward, so that when the motor drives the elevator to rush upward and fall downward, the special-shaped plug can stop driving the drive turbine by disengaging from the socket. The drive turbine can cut off the kinetic energy output in time, and the special-shaped gear rod can be driven to rotate slowly by meshing after the standby motor is powered on, so that the elevator hanging on the cable can be lowered to a safe position under the passive slow operation of the drive turbine, thereby improving the safety of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the trigger assembly structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a partial schematic diagram of the trigger component structure of the present invention; Figure 5 It is a schematic cross-sectional view of the sliding assembly structure of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle; Figure 7 It is a schematic diagram of the overall structure of the auxiliary transmission assembly of the present invention; Figure 8 It is a schematic diagram of the explosion of the auxiliary transmission assembly structure of the present invention.

[0016] In the figure: 1. Carrier plate; 2. Driving turbine; 3. Brake; 4. Cable; 21. trigger assembly; 211. annular clamp; 212. first slide plate; 213. fixing seat; 214. T-shaped slide plate; 215. trapezoidal groove; 216. first spring; 217. second spring; 22, sliding assembly; 221, annular tooth plate; 222, third spring; 223, first ratchet plate; 224, ratchet groove; 225, first rack; 226, first gear; 23. Auxiliary transmission assembly; 231. Socket; 232. Special-shaped plug; 233. First tooth groove; 234. Gear shaft; 235. U-shaped frame; 236. Second tooth groove; 237. Slide; 238. Second slide; 239. Slot plate; 2310. Special-shaped gear rod; 2311. Third tooth groove; 2312. Triangular groove; 2313. Transmission chain; 2314. Sensor; 2315. Spare motor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiments of the present invention See also Figures 1 to 4 An elevator lifting mechanism that can slowly descend when a motor loses control includes a carrier plate 1, a driving wheel 2, a brake 3 and a cable 4. The driving wheel 2 is installed on the outer wall of the carrier plate 1, the brake 3 is installed on the top of the carrier plate 1, the cable 4 is transmission-connected to the outer wall of the driving wheel 2, and the bottom of the brake 3 is attached to the outer wall of the driving wheel 2.

[0019] The driving turbine 2 includes a trigger assembly 21 arranged inside the carrier plate 1, and the trigger assembly 21 includes an annular clamping plate 211 symmetrically slidably connected to the outer wall of the driving turbine 2, and the two annular clamping plates 211 are fixedly connected to the first slide plate 212 on the side close to each other, and the outer wall of the trigger assembly 21 is fixedly connected to a fixing seat 213, and the annular clamping plates 211 are symmetrically distributed on both sides of the fixing seat 213. A second spring 217 is fixedly connected between the fixing seat 213 and the annular clamping plates 211, and a T-shaped slide plate 214 is slidably connected to the inside of the fixing seat 213, and the inside of the T-shaped slide plate 214 is symmetrically provided with trapezoidal grooves 215, and a first spring 216 is fixedly connected between the side of the T-shaped slide plate 214 located outside the fixing seat 213 and the fixing seat 213.

[0020] One end of the first slide plate 212 away from the annular clamping plate 211 is slidably connected to the inside of the trapezoidal groove 215. The inside of the trapezoidal groove 215 is beveled. The side of the trapezoidal groove 215 away from the annular gear plate 221 is a contraction area. When the first slide plate 212 is located on the side of the trapezoidal groove 215 away from the annular gear plate 221, the second spring 217 is in an elastic contraction state.

[0021] In actual use of the embodiment of the present invention: when the brake 3 cannot brake the driving turbine 2 in time, the driving turbine 2 is out of control and the cable 4 cannot be decelerated, the bottom of the brake 3 cannot clamp the outer wall of the driving turbine 2, and the second spring 217 on the annular clamping plate 211 is no longer squeezed by the brake 3 and elastically stretches. The elastic stretching of the second spring 217 drives the annular clamping plate 211 to slide to the side away from the T-shaped slide plate 214. After the annular clamping plate 211 slides, the end of the first slide plate 212 located inside the T-shaped slide plate 214 slides out to the outside of the T-shaped slide plate 214, and the first slide plate 2 In the process of sliding out of the T-shaped slide plate 214, the inclined surface of the trapezoidal groove 215 in the T-shaped slide plate 214 will always conflict with the first slide plate 212. In the process of the first slide plate 212 sliding out, the compressed first spring 216 will elastically stretch and drive the T-shaped slide plate 214 to slide out of the driving turbine 2. When the T-shaped slide plate 214 slides out to the outside of the driving turbine 2, the T-shaped slide plate 214 also slides out from the inside of the annular gear plate 221. The annular gear plate 221 is no longer affected by the limiting effect of the T-shaped slide plate 214 and is in a state of being able to slide inside the driving turbine 2. When the annular clamping plate 211 is not squeezed by the brake 3, the second spring 217 elastically stretches, so that the first slide plate 212 no longer limits the T-shaped slide plate 214 through the trapezoidal groove 215, so that the annular tooth plate 221 is not clamped and can slide outward, thereby performing a deceleration movement. The trigger component 21 detects the braking pressure of the outer wall of the driving turbine 2 by the brake 3, and can change the braking mode in time when the braking force of the brake 3 is insufficient, thereby improving the braking efficiency. The annular tooth plate 221 extends to the outside of the driving turbine 2, and at the same time can shorten the spacing required for braking by the brake 3, increase the friction between the brake 3 and the driving turbine 2, effectively shorten the rotation speed of the driving turbine 2, and slow down the speed of the elevator when moving.

[0022] See also Figure 5 and Figure 6 The interior of the driving turbine 2 includes a sliding assembly 22, and the sliding assembly 22 includes an annular gear plate 221 symmetrically slidably connected to the interior of the driving turbine 2. A third spring 222 is fixedly connected between the side of the annular gear plate 221 close to the interior of the driving turbine 2 and the inner cavity of the driving turbine 2. The side of the annular gear plate 221 close to the interior of the driving turbine 2 is symmetrically rotatably connected to the first ratchet plate 223. The inner cavity of the driving turbine 2 is symmetrically provided with ratchet grooves 224 adapted to the first ratchet plate 223. The side of the annular gear plate 221 close to the central axis of the driving turbine 2 is fixedly connected to the first rack 225. The first racks 225 are slidably connected to the interior of the driving turbine 2. The center of the inner cavity of the driving turbine 2 is rotatably connected to the first gear 226, and the two first racks 225 are meshed with the first gear 226.

[0023] A torsion spring is sleeved at the rotational connection between the first ratchet plate 223 and the outer wall of the annular gear plate 221. The torsion spring torsion force causes the first ratchet plate 223 to engage with the ratchet groove 224. The outer wall of the first ratchet plate 223 is inclined. The engagement of the first ratchet plate 223 with the ratchet groove 224 allows the first ratchet plate 223 to slide only in a direction away from the driving turbine 2.

[0024] When the embodiment of the present invention is actually used: as the annular gear plate 221 rotates together with the driving turbine 2, the centrifugal force generated by the annular gear plate 221 will cause the third spring 222 between the annular gear plate 221 and the driving turbine 2 to elastically stretch, and cause the annular gear plate 221 to slide out of the driving turbine 2 in a direction away from the axis of the driving turbine 2. During the process of the annular gear plate 221 gradually sliding out of the driving turbine 2, the first ratchet plate 223 will be in a state of one-way meshing with the ratchet groove 224 under the influence of the torsion spring sleeved at the rotation connection between the first ratchet plate 223 and the annular gear plate 221. During the process of the annular gear plate 221 sliding out to the outside of the driving turbine 2, the first ratchet plate 223 will be in a state of one-way meshing with the ratchet groove 224. The inclined surface of the outer wall of the first ratchet plate 223 fits with the inclined surface of the ratchet groove 224, so that the first ratchet plate 223 can slide when in contact with the ratchet groove 224. When the annular toothed plate 221 is about to slide back into the driving turbine 2 due to insufficient centrifugal force due to the reduced speed of the driving turbine 2, the plane of the outer wall of the first ratchet plate 223 fits with the plane of the ratchet groove 224, so that the first ratchet plate 223 and the ratchet groove 224 are in conflict and cannot slide. During the sliding process of the annular toothed plate 221, the first rack 225 drives the annular toothed plates 221 on both sides to slide synchronously by meshing with the first gear 226, so that the annular toothed plate 221 slides out of the driving turbine 2 and meshes with the special-shaped gear rod 2310.

[0025] See also Figure 7 and Figure 8 The outside of the carrier plate 1 is provided with an auxiliary transmission assembly 23, the auxiliary transmission assembly 23 includes a special-shaped gear rod 2310 symmetrically connected to the inside of the carrier plate 1 and located below the driving turbine 2, the special-shaped gear rod 2310 is meshed with the annular gear plate 221, the outer wall of the carrier plate 1 is fixedly connected with a socket 231 electrically connected to the driving turbine 2, the outer wall of the carrier plate 1 and located below the socket 231 is vertically slidably connected with a special-shaped plug 232, the inner wall of the special-shaped plug 232 is symmetrically provided with a first tooth groove in a linear array 233, the outer wall of the carrier plate 1 is symmetrically connected to the gear shaft 234 for rotation, the outer wall of the carrier plate 1 is slidably connected to the U-shaped frame 235, the outer wall of the U-shaped frame 235 is symmetrically provided with second tooth grooves 236 distributed in a linear array, the special-shaped plug 232 is meshed with the gear shaft 234 through the first tooth groove 233, the U-shaped frame 235 is meshed with the gear shaft 234 through the second tooth groove 236, the bottom of the U-shaped frame 235 is slidably connected to the slide 237, and the outer wall of the slide 237 is symmetrically provided with third tooth grooves 2311 distributed in a linear array.

[0026] A second slide plate 238 is slidably connected to the side of the slide 237 away from the carrier plate 1, and a groove plate 239 is fixedly connected to the side of the second slide plate 238 away from the carrier plate 1. The outer walls of the special-shaped gear rods 2310 are all distributed in a ring array with triangular grooves 2312. The two special-shaped gear rods 2310 are connected through a transmission chain 2313. The inner circle of the transmission chain 2313 is evenly and fixedly connected with convex teeth adapted to the triangular grooves 2312. A gear shaft 234 is installed on the outer wall of the carrier plate 1 and below the special-shaped plug 232. A backup motor 2315 is driven and installed on the outer wall of the carrier plate 1. The backup motor 2315 is meshed with the special-shaped gear rod 2310, and the backup motor 2315 is electrically connected to the sensor 2314.

[0027] A first arc panel is fixedly connected to both sides of the top of the outer wall of the U-shaped frame 235, and the first arc panel forms a limit for the U-shaped frame 235 when the gear shaft 234 and the U-shaped frame 235 are engaged. A second arc panel is fixedly connected to both sides of the bottom of the outer wall of the slide 237, and the second arc panel forms a limit for the slide 237 when the slide 237 and the special-shaped gear rod 2310 are engaged. Both sides of the convex teeth of the inner circle of the transmission chain 2313 are inclined surfaces.

[0028] In actual use of the embodiment of the present invention: when the driving turbine 2 rotates out of control and drives the annular gear plate 221 to rotate together, the annular gear plate 221 will drive the special-shaped gear rod 2310 meshing therewith to rotate together, and the special-shaped gear rod 2310 will drive the transmission chain 2313 connected to its outer wall to rotate together during the rotation process; Due to the problem of two-way loss of control of the driving turbine 2, when the special-shaped toothed bar 2310 rotates, the transmission chain 2313 will drive the slide 237 to slide toward the side where the special-shaped toothed bar 2310 is moving upward through the groove plate 239 and the second slide plate 238. When the slide 237 moves to engage with the special-shaped toothed bar 2310, the slide 237 will be affected by the meshing action of the third tooth groove 2311 and the special-shaped toothed bar 2310 and drive the U-shaped frame 235 to slide upward on the outer wall of the carrier plate 1. In the process of the U-shaped frame 235 sliding upward on the outer wall of the carrier plate 1, The special-shaped plug 232 slides downward by meshing with the gear shaft 234. After sliding downward, the special-shaped plug 232 is disconnected from the socket 231, so that the drive turbine 2 cuts off the kinetic energy output in time to reduce the kinetic energy. When the special-shaped plug 232 slides downward to the sensor 2314, the sensor 2314 controls the backup motor 2315 to be powered on and rotate. When the backup motor 2315 rotates, it meshes with the special-shaped gear rod 2310, so that the drive turbine 2 meshed with the special-shaped gear rod 2310 rotates slowly, and the cable 4 can drive the hanging elevator to slowly descend.

[0029] When the special-shaped toothed rod 2310 rotates, the transmission chain 2313 drives the slide 237 to slide horizontally, so that the slide 237 can always keep meshing with the side of the special-shaped toothed rod 2310 that rotates upward, so that when the motor drives the elevator to rush upward and fall downward, the special-shaped plug 232 can stop driving the drive turbine 2 by disengaging from the socket 231. The drive turbine 2 can cut off the kinetic energy output in time, and the special-shaped toothed rod 2310 can be driven to rotate slowly by meshing after the standby motor 2315 is powered on, so that the elevator suspended on the cable 4 can be drooped to a safe position under the passive slow operation of the drive turbine 2, thereby improving the safety of equipment use.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator lifting mechanism capable of slowing down when a motor loses control, comprising a carrier plate (1), a drive wheel (2), a brake (3) and a cable (4), characterized in that: The driving wheel (2) is mounted on the outer wall of the carrier plate (1), the brake (3) is mounted on the top of the carrier plate (1), the cable (4) is transmission-connected to the outer wall of the driving wheel (2), and the bottom of the brake (3) is in contact with the outer wall of the driving wheel (2); The driving turbine (2) comprises a trigger assembly (21) arranged inside the carrier plate (1), the trigger assembly (21) comprising an annular clamping plate (211) symmetrically slidably connected to the outer wall of the driving turbine (2), the two annular clamping plates (211) being fixedly connected to the first slide plate (212) on the sides close to each other, the outer wall of the trigger assembly (21) being fixedly connected to a fixing seat (213), the annular clamping plates (211) being symmetrically distributed on both sides of the fixing seat (213), a second spring (217) being fixedly connected between the fixing seat (213) and the annular clamping plates (211), a T-shaped slide plate (214) being slidably connected through the inside of the fixing seat (213), the inside of the T-shaped slide plate (214) being symmetrically provided with trapezoidal grooves (215), and a first spring (216) being fixedly connected between the side of the T-shaped slide plate (214) located outside the fixing seat (213) and the fixing seat (213).

2. The elevator lifting mechanism capable of slowing down when the motor loses control according to claim 1, characterized in that: One end of the first slide plate (212) away from the annular clamping plate (211) is slidably connected to the inside of the trapezoidal groove (215); the inside of the trapezoidal groove (215) is in an oblique angle shape; the side of the trapezoidal groove (215) away from the annular tooth plate (221) is a contraction zone; when the first slide plate (212) is located on the side of the trapezoidal groove (215) away from the annular tooth plate (221), the second spring (217) is in an elastic contraction state.

3. The elevator lifting mechanism capable of slowing down when the motor loses control according to claim 1, characterized in that: The driving wheel (2) comprises a sliding assembly (22) inside, the sliding assembly (22) comprising an annular toothed plate (221) symmetrically slidably connected to the driving wheel (2), a third spring (222) is fixedly connected between a side of the annular toothed plate (221) close to the driving wheel (2) and an inner cavity of the driving wheel (2), a first ratchet plate (223) is symmetrically rotatably connected to a side of the annular toothed plate (221) close to the driving wheel (2), a ratchet groove (224) matched with the first ratchet plate (223) is symmetrically provided in the inner cavity of the driving wheel (2), a first rack (225) is fixedly connected to a side of the annular toothed plate (221) close to the central axis of the driving wheel (2), the first racks (225) are slidably connected to the driving wheel (2), a first gear (226) is rotatably connected to the center of the inner cavity of the driving wheel (2), and two first racks (225) are meshed with the first gear (226).

4. The elevator lifting mechanism capable of slowing down when the motor loses control according to claim 3, characterized in that: A torsion spring is sleeved at the rotational connection between the outer walls of the first ratchet plate (223) and the annular toothed plate (221); the torsion force of the torsion spring is exerted to cause the first ratchet plate (223) to mesh with the ratchet groove (224); the outer wall of the first ratchet plate (223) is in the shape of an inclined surface; the first ratchet plate (223) meshes with the ratchet groove (224) so ​​that the first ratchet plate (223) can only slide in a direction away from the driving wheel (2).

5. The elevator lifting mechanism capable of slowing down when the motor loses control according to claim 1, characterized in that: An auxiliary transmission assembly (23) is arranged outside the carrier plate (1), the auxiliary transmission assembly (23) comprising a special-shaped gear rod (2310) symmetrically connected to the inside of the carrier plate (1) and located below the drive turbine (2), the special-shaped gear rod (2310) meshing with the annular gear plate (221), the outer wall of the carrier plate (1) is fixedly connected to a socket (231) electrically connected to the drive turbine (2), the outer wall of the carrier plate (1) is vertically slidably connected to a special-shaped plug (232) located below the socket (231), the inner wall of the special-shaped plug (232) is symmetrically provided with first tooth grooves (231) distributed in a linear array 3), the outer wall of the carrier plate (1) is symmetrically rotatably connected to a gear shaft (234), the outer wall of the carrier plate (1) is slidably connected to a U-shaped frame (235), the outer wall of the U-shaped frame (235) is symmetrically provided with second tooth grooves (236) distributed in a linear array, the special-shaped plug (232) is meshed with the gear shaft (234) through the first tooth groove (233), the U-shaped frame (235) is meshed with the gear shaft (234) through the second tooth groove (236), the bottom of the U-shaped frame (235) is slidably connected to a slide frame (237), and the outer wall of the slide frame (237) is symmetrically provided with third tooth grooves (2311) distributed in a linear array.

6. The elevator lifting mechanism capable of slowing down when the motor loses control according to claim 5, characterized in that: A second slide plate (238) is slidably connected to a side of the slide frame (237) away from the carrier plate (1); a groove plate (239) is fixedly connected to a side of the second slide plate (238) away from the carrier plate (1); the outer walls of the special-shaped gear rods (2310) are provided with triangular grooves (2312) distributed in a ring array; the two special-shaped gear rods (2310) are connected in transmission via a transmission chain (2313); the inner ring of the transmission chain (2313) is evenly and fixedly connected with convex teeth that match the triangular grooves (2312); a gear shaft (234) is installed on the outer wall of the carrier plate (1) and below the special-shaped plug (232); a backup motor (2315) is drivenly installed on the outer wall of the carrier plate (1); the backup motor (2315) is meshed with the special-shaped gear rod (2310); and the backup motor (2315) is electrically connected to the sensor (2314).

7. The elevator lifting mechanism capable of slowing down when the motor loses control according to claim 6, characterized in that: Both sides of the top of the outer wall of the U-shaped frame (235) are fixedly connected to first curved panels, the first curved panels limiting the U-shaped frame (235) when the gear shaft (234) and the U-shaped frame (235) are meshed, both sides of the bottom of the outer wall of the slide (237) are fixedly connected to second curved panels, the second curved panels limiting the slide (237) when the slide (237) and the special-shaped gear rod (2310) are meshed, and both sides of the convex teeth of the inner ring of the transmission chain (2313) are inclined surfaces.

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