CN112707274A

CN112707274A - Elevator traction robot with bidirectional braking type brake system

Info

Publication number: CN112707274A
Application number: CN202011525685.3A
Authority: CN
Inventors: 黄锦会
Original assignee: Yuyuanyang Ningbo Technology Co ltd
Current assignee: Yuyuanyang Ningbo Technology Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-04-27

Abstract

The invention discloses an elevator traction robot with a bidirectional braking type braking system, which comprises a lift car, a steel wire rope, a balancing weight, a power roller, a connecting flange and a bidirectional braking device, wherein the lift car is provided with a lifting rope and a lifting rope; the bidirectional brake device comprises a brake disc and bidirectional brake calipers; the two sides of the brake disc body are provided with brake round bosses; the bidirectional brake caliper comprises a caliper body and two bidirectional brake components; the bidirectional brake assembly comprises an axial brake pad, a radial brake pad, a sequential brake cylinder, a heat insulation plate and a radial brake bracket; the sequential brake oil cylinder is provided with a first output end and a second output end which act sequentially; the first output end is connected with the axial brake pad; the heat insulation plate is arranged at the second output end; the radial braking bracket is matched with the heat insulation plate in a wedge shape; the invention provides enough braking force, meets the light load braking working condition and the heavy load braking working condition, is beneficial to slowing down the abrasion of the brake pad and has long service life; the elevator is safer and more reliable to use and more flexible to brake.

Description

Elevator traction robot with bidirectional braking type brake system

Technical Field

The invention relates to an elevator traction robot with a bidirectional braking type brake system.

Background

The disc brake at present is axial centre gripping braking, and is subject to the brake block and the quotation area of contact limited, and the braking force that provides is less relatively, all adopts same brake block braking under load little braking operating mode and load big braking operating mode simultaneously, leads to the brake block wearing and tearing aggravation, and life is short.

Disclosure of Invention

The object of the present invention is to overcome the above mentioned drawbacks and to provide an elevator traction robot with a bidirectional braking type braking system.

In order to achieve the purpose, the invention adopts the following specific scheme:

an elevator traction robot with a bidirectional braking type braking system comprises a lift car, a steel wire rope, a balancing weight, a power roller, a connecting flange and a bidirectional braking device; the steel wire rope is wound on the power roller; the top end of the lift car is fixedly connected with one end of the steel wire rope; the balancing weight is fixedly connected with the other end of the steel wire rope; one end of the connecting flange is fixed on the end face of one end of the power roller; the bidirectional brake device is connected to the other end of the connecting flange; the bidirectional brake device provides axial brake braking force or provides axial brake braking force and radial brake braking force simultaneously according to the load of the car.

Further, the bidirectional brake device comprises a brake disc and a bidirectional brake caliper; the brake disc comprises a fixed shaft and a brake disc body; the brake disc body is of a hollow structure, is rotatably connected to one end of the fixed shaft through a bearing assembly and is connected to the connecting flange through the bearing assembly; the two sides of the brake disc body are respectively coaxially and convexly provided with a brake round boss; the bidirectional brake calipers comprise calipers bodies and two bidirectional brake assemblies which are symmetrically arranged at two ends of the calipers bodies in a mirror-direction manner; wherein one part of the brake disc body is movably embedded between the two ends of the caliper body; each bidirectional brake assembly comprises an axial brake pad, a radial brake pad, two sequential brake cylinders arranged side by side, a heat insulation plate and a radial brake bracket; the axial brake pad is elastically connected in the caliper body in a sliding manner; the sequential brake oil cylinder is arranged on the caliper body; the sequential brake oil cylinder is fixed on the caliper body; the sequential brake oil cylinder is provided with a first output end and a second output end which act sequentially; the first output end of the sequential brake oil cylinder is connected with the axial brake pad; the heat insulation plate is connected to the second output end of the sequential braking oil cylinder; the radial braking support is elastically and slidably connected to the caliper body and is in wedge-shaped fit with the heat insulation plate; the radial brake block is arranged on the radial brake bracket and is correspondingly positioned above the brake circular boss;

the axial brake pad can axially move to contact and rub with the side surface of the brake disc body under the action of the first output end of the sequential brake cylinder; the radial brake pad can move to be in friction contact with the circumferential surface of the brake circular boss along the radial direction under the action of the second output end of the sequential brake oil cylinder and the cooperation of the heat insulation plate and the radial brake support.

The invention further provides a sequential braking oil cylinder, which comprises an oil cylinder body, a primary plunger, a secondary plunger, a sequential valve spring, a sequential opening valve and a heat insulation pad; the oil cylinder body is fixed on the caliper body; the oil cylinder body is provided with an oil inlet hole; one end of the secondary plunger piston hermetically extends into the oil cylinder body; the heat insulation plate is connected with the other ends of the primary plungers of the two sequential brake cylinders; two avoidance holes are correspondingly arranged at intervals on the heat insulation plate; one end of the first-stage plunger movably penetrates through the avoidance hole and then movably extends into the second-stage plunger; the sequential opening valve is arranged in the primary plunger; the sequence valve spring is arranged in the primary plunger, and two ends of the sequence valve spring are respectively abutted with the sequence opening valve and the primary plunger; an oil return groove and a plurality of secondary oil return holes are uniformly distributed in the secondary plunger; one ends of the secondary oil return holes are communicated with the oil return grooves, and the other ends of the secondary oil return holes penetrate through one end face of the secondary plunger along the parallel axial direction; a plurality of primary oil return holes are uniformly distributed on the primary plunger; and the plurality of first-stage oil return holes are communicated with the oil return groove.

The heat insulation plate is further provided with a first wedge-shaped table, and the inclined plane of the first wedge-shaped table faces to the first wedge-shaped table; the radial braking support is provided with a second wedge-shaped table; the inclined plane of the second wedge-shaped platform faces downwards and is attached to the inclined plane of the first wedge-shaped platform; the radial brake block is arranged in an arc shape.

Furthermore, two reset spring pieces which are arranged side by side at intervals are arranged between the axial brake pad and the caliper body; and a reset tension spring is connected between the radial braking support and the caliper body.

Furthermore, the brake disc body comprises a first disc body and a second disc body; the first tray body and the second tray body are connected together through a plurality of spaced reinforcing ribs; the first tray body, the second tray body and the plurality of reinforcing ribs are integrally formed; the reinforcing ribs are arranged in an arc shape; and a plurality of thermal bimetallic strips are arranged between every two adjacent reinforcing ribs at intervals.

The invention has the beneficial effects that: according to the invention, the brake circular bosses are convexly arranged on the two sides of the brake disc body, and the two bidirectional brake assemblies are symmetrically arranged on the caliper body in a mirror-image manner, so that the first output end and the second output end of the sequential brake oil cylinder can respectively drive the axial brake pad to be in frictional contact with the side surface of the brake disc body and the radial brake pad to be in frictional contact with the brake circular bosses in sequence, and further the axial brake and the radial brake are realized, so that enough braking force can be provided, the working condition of small-load brake and the working condition of large-load brake are met, the abrasion of the brake pads is favorably reduced, and the service life is long.

The invention further ensures that the elevator is safer and more reliable to use, is more flexible to brake and also saves energy.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of another aspect of the present invention;

FIG. 3 is a perspective view of the bi-directional brake apparatus of the present invention;

FIG. 4 is a perspective view of the bi-directional brake apparatus of the present invention from another perspective;

FIG. 5 is an exploded schematic view of the bi-directional brake caliper of the present invention;

FIG. 6 is a cross-sectional view of the two-way brake caliper of the present invention;

FIG. 7 is an exploded view of two sequential brake cylinders of the present invention;

FIG. 8 is a cross-sectional schematic view of a brake rotor of the present invention;

FIG. 9 is a perspective view of a brake rotor of the present invention;

description of reference numerals: a1, a car; a2, steel wire rope; a3, a balancing weight; a4, power roller; a5, connecting flange; a6, bidirectional brake braking device; 1. a brake disc; 11. a fixed shaft; 12. a brake disc body; 121. a brake circular boss; 122. a first tray body; 123. a second tray body; 124. reinforcing ribs; 125. a thermal bimetallic strip; 13. a bearing assembly; 2. bidirectional brake calipers; 21. a caliper body; 22. a bi-directional braking assembly; 221. an axial brake pad; 222. a radial brake pad; 223. sequentially braking the oil cylinder; 2231. an oil cylinder body; 22311. an oil inlet hole; 2232. a primary plunger; 22321. a primary oil return hole; 2233. a secondary plunger; 22331. an oil return groove; 22332. a secondary oil return hole; 2234. a sequence valve spring; 2235. sequentially opening the valves; 2236. a heat insulating pad; 224. a heat insulation plate; 2241. a first wedge table; 225. a radial brake spider; 2251. a second wedge table; 226. resetting the elastic sheet; 227. and a return tension spring.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.

As shown in fig. 1 to 9, the elevator traction robot with a two-way braking type braking system according to the embodiment includes a car a1, a steel wire rope a2, a counterweight a3, a power roller a4, a connecting flange a5 and a two-way braking device a 6; the steel wire rope a2 is wound on the power roller a 4; the top end of the car a1 is fixedly connected with one end of the steel wire rope a 2; the counterweight a3 is fixedly connected with the other end of the steel wire rope a 2; one end of the connecting flange a5 is fixed on one end face of the power roller a 4; the two-way brake device a6 is connected to the other end of the connecting flange a 5; the bidirectional brake device a6 provides axial brake braking force or provides axial brake braking force and radial brake braking force simultaneously according to the load of the car a 1.

When the bidirectional braking device is in practical use, users and/or cargos enter the car a1 to exert force, the quantity and the weight of the users and/or cargos are different, so that the load borne by the car a1 is different, the larger the load of the car a1 is, the larger the inertia is, so that the required braking force is larger, when the bidirectional braking device is in work, the power roller a4 drives the car a1 to move up and down through the steel wire rope a2, the bidirectional braking device a6 rotates along with the power roller a4 through the connecting flange a5, after the car a1 is about to reach a preset position, when the load on the car a1 is smaller, the bidirectional braking device a6 provides axial braking force, and the axial braking force is transmitted to the power roller a4 through the connecting flange a5, so that the power roller a4 stops; when the load on the car a1 is large, the bidirectional brake device a6 provides both axial brake braking force and radial brake braking force, thereby providing sufficient braking force to decelerate the power roller a4 to a predetermined position; therefore, the elevator is safer and more reliable to use, is more flexible to brake and saves energy.

Based on the above embodiment, further, the bidirectional brake device a6 includes a brake disc 1 and a bidirectional brake caliper 2; the brake disc 1 comprises a fixed shaft 11 and a brake disc body 12; the brake disc body 12 is a hollow structure, the brake disc body 12 is rotatably connected to one end of the fixed shaft 11 through a bearing assembly 13, and is connected to the connecting flange a5 through the bearing assembly 13; two sides of the brake disc body 12 are respectively coaxially and convexly provided with a brake circular boss 121; the bidirectional brake caliper 2 comprises a caliper body 21 and two bidirectional brake assemblies 22 which are symmetrically arranged at two ends of the caliper body 21 in a mirror-image manner; wherein, a part of the brake disc body 12 is movably embedded between two ends of the caliper body 21; each bidirectional brake assembly 22 comprises an axial brake pad 221, a radial brake pad 222, two sequential brake cylinders 223 arranged side by side, a heat insulation plate 224 and a radial brake bracket 225; the axial brake pad 221 is elastically connected in the caliper body 21 in a sliding manner; the sequential brake cylinder 223 is arranged on the caliper body 21; the sequential brake cylinder 223 is fixed on the caliper body 21; the sequential brake cylinder 223 is provided with a first output end and a second output end which act sequentially; the first output end of the sequential brake cylinder 223 is connected with the axial brake pad 221; the heat insulation plate 224 is connected to a second output end of the sequential brake cylinder 223; the radial brake bracket 225 is elastically and slidably connected to the caliper body 21 and is in wedge-shaped engagement with the heat insulation plate 224; the radial brake block 222 is arranged on the radial brake bracket 225 and is correspondingly positioned above the brake circular boss 121;

the axial brake pad 221 can move axially to contact and rub with the side surface of the brake disc body 12 under the action of the first output end of the sequential brake cylinder 223; the radial brake pad 222 is radially movable to be in frictional contact with the circumferential surface of the brake circular boss 121 by a second output end of the sequential brake cylinder 223 and cooperation of the heat shield plate 224 and the radial brake bracket 225.

The working mode of the embodiment is as follows: when the brake disc is installed, the brake disc body 12 is fixedly connected with the connecting flange a5, and the other end of the fixed shaft 11 is fixedly connected to an external installation wall; when the brake disc is in work, the connecting flange a5 drives the brake disc body 12 to rotate, the brake disc body 12 rotates relative to the fixed shaft 11, when the load is small, the two bidirectional brake assemblies 22 on the two ends of the caliper body 21 work synchronously, at the moment, the first output end of the sequential brake cylinder 223 firstly pushes the axial brake pads 221 to move towards the brake disc body 12, namely, the axial brake pads 221 on the two sides of the brake disc body 12 are in contact friction with the brake disc body 12 synchronously, so that the axial brake is carried out, and the brake effect is achieved; when heavy load braking is carried out, on the basis of carrying out axial braking, the second output end of the sequential braking oil cylinder 223 works, the axial force of the second output end is converted into the radial direction through the wedge-shaped matching of the radial braking support 225 and the heat insulation plate 224, so that the radial braking support 225 drives the radial braking piece 222 to move towards the radial direction until the radial braking piece 222 is in friction contact with the circumferential surface of the braking circular boss 121 to carry out radial braking, and thus, by utilizing the axial braking and the radial braking, a larger braking force is achieved to meet the working condition of heavy load braking.

This embodiment is through all protruding brake circular boss 121 of establishing in brake disc body 12 both sides, and mirror symmetry sets up two-way brake subassembly 22 on calliper body 21, thereby utilize the first output of order brake cylinder 223, the second output can drive axial brake block 221 and brake disc body 12 side frictional contact successively respectively, radial brake block 222 and brake circular boss 121 frictional contact, and then realize axial brake braking and radial brake braking, thereby can provide enough big brake force, in order to satisfy the operating mode of the little braking operating mode of load and the big braking of load, do benefit to and slow down the wearing and tearing of brake block, long service life.

Based on the above embodiments, further, the sequence brake cylinder 223 includes a cylinder body 2231, a primary plunger 2232, a secondary plunger 2233, a sequence valve spring 2234, a sequence opening valve 2235, and a heat insulation pad 2236; the oil cylinder body 2231 is fixed on the caliper body 21; the cylinder body 2231 is provided with an oil inlet 22311; one end of the secondary plunger 2233 is hermetically extended into the cylinder body 2231; the heat insulation plate 224 is connected with the other ends of the primary plungers 2232 of the two sequential brake cylinders 223; two avoidance holes are correspondingly arranged at intervals on the heat insulation plate 224; one end of the primary plunger 2232 movably penetrates through the clearance hole and then movably extends into the secondary plunger 2233; the sequential opening valve 2235 is arranged in the primary plunger 2232; the sequence valve spring 2234 is disposed inside the primary plunger 2232, and both ends of the sequence valve spring 2234 are abutted to the sequence opening valve 2235 and the primary plunger 2232, respectively; an oil return groove 22331 and a plurality of secondary oil return holes 22332 are uniformly distributed in the secondary plunger 2233; one end of each of the secondary oil return holes 22332 is communicated with the oil return groove 22331, and the other end of each of the secondary oil return holes 22332 penetrates through an end face of one end of the secondary plunger 2233 along a parallel axial direction; a plurality of primary oil return holes 22321 are uniformly distributed on the primary plunger 2232; the plurality of primary oil return holes 22321 are all communicated with the oil return groove 22331. In this embodiment, preferably, the cylinder bodies 2231 of the two sequential braking cylinders 223 are integrally formed, so that the installation is more convenient.

Initially, under the action of the sequence valve spring 2234, the sequence opening valve 2235 is closer to the oil inlet 22311 relative to each primary oil return hole 22321, and the end surface of the secondary plunger 2233 abuts against the inner end surface of the cylinder body 2231; in a braking condition with a small load, hydraulic oil enters the two sequential brake cylinders 223 through the oil inlet holes 22311, at this time, under the action of oil pressure, the primary plunger 2232 extends outward relative to the cylinder body 2231, so as to push the axial brake pad 221 to make contact with the brake disc body 12 for friction, then the sequential opening valve 2235 compresses the sequential valve spring 2234, the sequential opening valve 2235 moves relative to the primary plunger 2232, when each primary oil return hole 22321 is closer to the position of the oil inlet hole 22311 relative to the sequential opening valve 2235, i.e., each primary oil return hole 22321 is communicated with the oil inlet hole 22311, at this time, hydraulic oil enters the oil return groove 22331 through each primary oil return hole 22321, then flows between the end surface of the secondary plunger 2233 and the inner end surface of the cylinder body 2231 through each secondary oil return hole 22332, then under the action of oil pressure, the secondary plunger 2233 extends relative to the cylinder body 2231, so as to push the heat shield 224 to move, and engage with, the radial brake bracket 225 moves towards the radial direction, so as to drive the radial brake block 222 to contact and rub with the brake circular boss 121 along the radial direction, and thus the radial brake is realized; with the arrangement, the primary plunger 2232 and the secondary plunger 2233 extend out successively, so that the axial brake and the radial brake work successively to meet different load brake conditions.

Based on the above embodiment, further, the heat insulation board 224 is provided with a first wedge-shaped platform 2241, and the inclined surface of the first wedge-shaped platform 2241 faces; the radial brake spider 225 is provided with a second wedge 2251; the inclined surface of the second wedge 2251 faces downwards and abuts against the inclined surface of the first wedge 2241. So set up, convert the axial force of heat insulating board 224 to radial direction, the structure is ingenious. In this embodiment, the radial brake pads 222 are further provided in an arc shape. So set up, the area of contact of increase radial brake block 222 and brake circular convex platform 121 to provide bigger braking force, make the profile of radial brake block 222 and the global looks adaptation of brake circular convex platform 121 simultaneously, make radial brake block 222 atress more balanced.

In this embodiment, two reset spring pieces 226 are disposed between the axial brake pad 221 and the caliper body 21; so set up, after axial brake piece 221 carries out axial brake braking and accomplishes, two shell fragments 226 that reset provide the power that resets for axial brake piece 221, also do benefit to the one-level plunger 2232 simultaneously and reset. In this embodiment, further, a return tension spring 227 is connected between the radial brake bracket 225 and the caliper body 21; so set up, utilize the extension spring 227 that resets to provide the power that resets for radial brake support 225, and then indirectly for secondary plunger 2233 provides the power that resets.

Based on the above embodiment, further, the brake disc 12 includes a first disc 122 and a second disc 123; the first tray body 122 and the second tray body 123 are connected together through a plurality of spacing reinforcing ribs 124; the first disc body 122, the second disc body 123 and the plurality of reinforcing ribs 124 are integrally formed, so that the strength of the brake disc body 12 is ensured. So set up, do benefit to the heat dissipation of brake disc body 12. In this embodiment, the bearing assembly 13 includes a bearing seat and two deep groove ball bearings, the bearing seat is uniformly distributed with a plurality of studs, the bearing seat is disposed in the brake circular boss 121 on the first disc 122, and each stud axially movably penetrates through the brake circular boss 121; the bearing block is rotatably connected to the upper fixed shaft 11 through two deep groove ball bearings. In this embodiment, the reinforcing rib 124 is further disposed in an arc shape. So configured, it is advantageous to direct the flow of the outside air between the first plate 122 and the second plate 123, thereby accelerating the cooling of the brake plate 12. In this embodiment, a plurality of thermal bimetallic strips 125 are further disposed between two adjacent reinforcing ribs 124 at intervals. So set up, utilize the thermal expansion coefficient difference of hot bimetallic strip 125 for hot bimetallic strip 125 is heated the back camber and is changed, thereby increases the air flux between two adjacent strengthening ribs 124, in time takes away the heat that brake disc body 12 produced.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.

Claims

1. An elevator traction robot having a bi-directional braking type braking system, characterized in that: the method is characterized in that: the elevator comprises a car (a1), a steel wire rope (a2), a counterweight (a3), a power roller (a4), a connecting flange (a5) and a bidirectional braking brake device (a 6); the steel wire rope (a2) is wound on the power roller (a 4); the top end of the car (a1) is fixedly connected with one end of the steel wire rope (a 2); the counterweight block (a3) is fixedly connected with the other end of the steel wire rope (a 2); one end of the connecting flange (a5) is fixed on one end face of the power roller (a 4); the two-way brake device (a6) is connected to the other end of the connecting flange (a 5); wherein the bidirectional brake braking device (a6) provides axial brake braking force or provides axial brake braking force and radial brake braking force simultaneously according to the load of the car (a 1).

2. The elevator traction robot with a bi-directional braking system of claim 1, wherein: the bidirectional brake device (a6) comprises a brake disc (1) and a bidirectional brake caliper (2);

the brake disc (1) comprises a fixed shaft (11) and a brake disc body (12); the brake disc body (12) is of a hollow structure, the brake disc body (12) is rotatably connected to one end of the fixed shaft (11) through a bearing assembly (13), and is connected to the connecting flange (a5) through the bearing assembly (13); two sides of the brake disc body (12) are respectively coaxially and convexly provided with a brake circular boss (121); the bidirectional brake caliper (2) comprises a caliper body (21) and two bidirectional brake assemblies (22) which are arranged at two ends of the caliper body (21) in a mirror symmetry manner; wherein one part of the brake disc body (12) is movably embedded between two ends of the caliper body (21); each bidirectional brake assembly (22) comprises an axial brake pad (221), a radial brake pad (222), two sequential brake cylinders (223) arranged side by side, a heat insulation plate (224) and a radial brake bracket (225); the axial brake pad (221) is elastically connected in the caliper body (21) in a sliding manner; the sequential brake oil cylinder (223) is arranged on the caliper body (21); the sequential brake oil cylinder (223) is fixed on the caliper body (21); the sequential brake cylinder (223) is provided with a first output end and a second output end which act in sequence; the first output end of the sequential brake cylinder (223) is connected with the axial brake pad (221); the heat insulation plate (224) is connected to the second output end of the sequential brake cylinder (223); the radial brake bracket (225) is elastically and slidably connected to the caliper body (21) and is in wedge fit with the heat insulation plate (224); the radial brake block (222) is arranged on the radial brake bracket (225) and is correspondingly positioned above the brake circular boss (121);

the axial brake pad (221) can axially move to be in contact friction with the side surface of the brake disc body (12) under the action of a first output end of the sequential brake cylinder (223); the radial brake pad (222) can move to be in friction contact with the circumferential surface of the brake circular boss (121) along the radial direction under the action of the second output end of the sequential brake cylinder (223) and the cooperation of the heat insulation plate (224) and the radial brake bracket (225).

3. The elevator traction robot with a bi-directional braking system of claim 2, wherein: the sequential brake oil cylinder (223) comprises an oil cylinder body (2231), a primary plunger (2232), a secondary plunger (2233), a sequential valve spring (2234), a sequential opening valve (2235) and a heat insulation pad (2236); the oil cylinder body (2231) is fixed on the caliper body (21); the oil cylinder body (2231) is provided with an oil inlet hole (22311); one end of the secondary plunger (2233) hermetically extends into the oil cylinder body (2231); the heat insulation plate (224) is connected with the other ends of the primary plungers (2232) of the two sequential brake cylinders (223); the heat insulation plate (224) is correspondingly provided with two avoidance holes at intervals; one end of the primary plunger (2232) movably penetrates through the avoidance hole and then movably extends into the secondary plunger (2233); the sequential opening valve (2235) is arranged in the primary plunger (2232); the sequence valve spring (2234) is arranged in the primary plunger (2232), and two ends of the sequence valve spring are respectively abutted against the sequence opening valve (2235) and the primary plunger (2232); an oil return groove (22331) and a plurality of secondary oil return holes (22332) are uniformly distributed in the secondary plunger (2233); one ends of the secondary oil return holes (22332) are communicated with the oil return groove (22331), and the other ends of the secondary oil return holes (22332) penetrate through the end face of one end of the secondary plunger (2233) along the parallel axial direction; a plurality of primary oil return holes (22321) are uniformly distributed on the primary plunger (2232); the primary oil return holes (22321) are communicated with the oil return groove (22331).

4. The elevator traction robot with a bi-directional braking system of claim 2, wherein: the heat insulation plate (224) is provided with a first wedge-shaped table (2241), and the inclined surface of the first wedge-shaped table (2241) faces; the radial brake spider (225) is provided with a second wedge-shaped platform (2251); the inclined surface of the second wedge-shaped table (2251) faces downwards and is abutted against the inclined surface of the first wedge-shaped table (2241); the radial brake block (222) is arranged in an arc shape.

5. The elevator traction robot with a bi-directional braking system of claim 2, wherein: two reset spring pieces (226) which are arranged side by side at intervals are arranged between the axial brake pad (221) and the caliper body (21); and a reset tension spring (227) is connected between the radial brake bracket (225) and the caliper body (21).

6. The elevator traction robot with a bi-directional braking system of claim 2, wherein: the brake disc body (12) comprises a first disc body (122) and a second disc body (123); the first tray body (122) and the second tray body (123) are connected together through a plurality of spacing reinforcing ribs (124); the first tray body (122), the second tray body (123) and the reinforcing ribs (124) are integrally formed; the reinforcing ribs (124) are arranged in an arc shape; and a thermal bimetallic strip (125) is also arranged between every two adjacent reinforcing ribs (124).

7. The elevator traction robot with a bi-directional braking system of claim 2, wherein: the brake disc body (12) comprises a first disc body (122) and a second disc body (123); the first tray body (122) and the second tray body (123) are connected together through a plurality of spacing reinforcing ribs (124); the first tray body (122), the second tray body (123) and the reinforcing ribs (124) are integrally formed; the reinforcing ribs (124) are arranged in an arc shape; a plurality of thermal bimetallic strips (125) are arranged between two adjacent reinforcing ribs (124) at intervals.