A fall protection design for elevator suspension devices

Abstract

This utility model discloses an elevator suspension device with fall protection design, comprising: a deflector sheave seat, which is fixedly installed on the suspension component; a deflector sheave rotatably installed on the deflector sheave seat; a suspension wire rope passing sequentially around the traction sheave and the deflector sheave and then connecting to a rope end assembly; the rope end assembly being fixedly installed on the load-bearing structure of the machine room; and a secondary wire rope protection device, which includes a blocking rod passing through the deflector sheave seat and positioned on the upper side of the deflector sheave; wherein a rope end load sensor is installed inside the rope end assembly. Compared with the prior art, this utility model solves the problem that existing elevator suspension devices cannot prevent the deflector sheave from detaching from the car or counterweight, thus preventing the car or counterweight from falling.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to an elevator suspension device with a fall protection design. Background Technology

[0002] The traction system is the core power source for elevator operation, and its working principle is based on the synergistic effect of frictional transmission and gravity balance. The core components of the traction system include the traction machine, traction sheave, wire rope, counterweight, and deflector pulley assembly. The deflector pulley assembly is used to change the direction of the wire rope and adjust the traction ratio.

[0003] The counterweight sheave is the core moving pulley component in the traction system of an elevator, installed on the upper part of the counterweight frame. Currently, elevators with a non-1:1 traction ratio only have devices designed to prevent the wire rope from detaching from the sheave in the car or counterweight, without considering the problem of the car or counterweight falling if the sheave detaches from the car or counterweight. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator suspension device with a fall protection design to solve the problem that existing elevator suspension devices cannot prevent the anti-fall pulley from detaching from the car or counterweight, which could cause the car or counterweight to fall.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an elevator suspension device with fall protection design, comprising:

[0006] The anti-rope sheave seat is fixedly installed on the suspension component. The anti-rope sheave is rotatably installed on the anti-rope sheave seat. The suspension wire rope passes through the traction sheave and the anti-rope sheave in sequence and then connects to the rope head assembly. The rope head assembly is fixedly installed on the load-bearing structure of the machine room.

[0007] A secondary protection device for wire rope includes a blocking rod that passes through the deflector seat and is located on the upper side of the deflector.

[0008] The rope end assembly includes a rope end load sensor.

[0009] As a further description of the above technical solution:

[0010] The suspension components are either the car or the counterweight.

[0011] As a further description of the above technical solution:

[0012] The secondary protection device for the wire rope also includes a locking plate, which is fixedly installed in the anti-rope pulley seat by the first bolt and inserted into the blocking rod.

[0013] As a further description of the above technical solution:

[0014] The anti-rope pulley seat has symmetrically arranged locking plates on both sides.

[0015] As a further description of the above technical solution:

[0016] The anti-rope pulley seat is in a "convex" shape.

[0017] As a further description of the above technical solution:

[0018] Symmetrically arranged connecting bolt groups are provided on both sides of the anti-rope pulley seat, and each connecting bolt group includes several connecting bolts arranged in a straight line.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0020] 1. In the present utility model, when the suspension steel wire rope disengages from the anti-rope pulley of the car or counterweight due to special reasons, the steel wire rope secondary protection device can prevent the elevator from falling caused by the suspension steel wire rope disengaging from the car or counterweight. At the same time, the change in the tension of the steel wire rope will be fed back to the system through the sensor installed above the rope socket assembly, causing the elevator to stop running.

[0021] 2. In the present utility model, for elevators using a non-1:1 traction ratio, when the suspension device is connected to the car or counterweight through an anti-rope pulley, if the anti-rope pulley disengages from the car or counterweight frame due to reasons such as bearing damage, this device can prevent the suspension steel wire rope from disengaging from the car or counterweight, avoiding the car or counterweight from falling. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a structural schematic diagram of an elevator suspension device with an anti-falling protection design.

[0024] Figure 2 It is a cross-sectional view of the anti-rope pulley seat in an elevator suspension device with an anti-falling protection design.

[0025] Legend Explanation: <S

[0026] 1. Rope socket load sensor; 2. Rope socket assembly; 3. Suspension steel wire rope; 4. Traction wheel; 5. Steel wire rope secondary protection device; 51. Blocking rod; 52. Locking plate; 53. First bolt; 6. Anti-rope pulley; 61. Anti-rope pulley seat; 611. Connecting bolt; 7. Suspension member Detailed Embodiment

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example 1

[0029] Please see Figure 1-2 This utility model provides a technical solution: an elevator suspension device with fall protection design, comprising:

[0030] The anti-rope sheave seat 61 is fixedly installed on the suspension component 7, which is the car or counterweight. The anti-rope sheave 6 is rotatably installed on the anti-rope sheave seat 61. The suspension wire rope 3 passes through the traction sheave 4 and the anti-rope sheave 6 in sequence and then connects to the rope head assembly 2. The rope head assembly 2 is fixedly installed on the load-bearing structure of the machine room.

[0031] The secondary protection device 5 for the wire rope includes a blocking rod 51 that passes through the anti-rope sheave seat 61 and is located on the upper side of the anti-rope sheave 6.

[0032] The rope end assembly 2 is equipped with a rope end load sensor 1, which is integrated into the cone sleeve or wedge clamp of the rope end assembly 2.

[0033] When the suspension wire rope detaches from the car or the counterweight sheave for special reasons, the secondary wire rope protection device can prevent the elevator from falling due to the suspension wire rope detaching from the car or counterweight. At the same time, the change in the tension of the wire rope will be fed back to the system through the sensor installed above the rope end assembly, so that the elevator stops running.

[0034] The anti-rope pulley seat 61 is convex in shape, which facilitates the maintenance of the anti-rope pulley 6.

[0035] Working principle: When the suspension wire rope 3 detaches from the anti-cord sheave 6 for various reasons, the suspension component 7 falls under the influence of gravity. The suspension wire rope 3 will catch the secondary protection device 5 that follows the suspension component 7, preventing the suspension component 7 from falling. At the same time, when the suspension wire rope 3 detaches from the anti-cord sheave 6, the pressure on the suspension wire rope 3 decreases, which is transmitted to the rope end load sensor 1 installed on the rope end assembly 2. The rope end load sensor 1 feeds back the tension change to the elevator system, causing the elevator to stop running. For elevators using a non-1:1 traction ratio, when the suspension device is connected to the car or counterweight through the anti-cord sheave, if the anti-cord sheave detaches from the car or counterweight frame due to bearing damage or other reasons, this device can prevent the suspension wire rope from detaching from the car or counterweight, avoiding the car or counterweight from falling. Example 2

[0036] This embodiment further improves upon the above embodiment by providing the following technical solution: the secondary protection device 5 for the wire rope also includes a locking plate 52, which is fixedly installed inside the anti-rope pulley seat 61 by a first bolt 53 and inserted into the blocking rod 51. Furthermore, to improve the locking effect, symmetrically arranged locking plates 52 are provided on both sides of the anti-rope pulley seat 61.

[0037] The end of the blocking rod 51 is provided with a plug notch. After the end of the blocking rod 51 extends out of the anti-rope wheel seat 61, the locking plate 52 is inserted into the plug notch at the end of the blocking rod 51. Then, the locking plate 52 is fixed by the first bolt 53 to prevent the blocking rod 51 from axially displacing and effectively prevent the suspension wire rope 3 from detaching from the car or counterweight. Example 3

[0038] Based on the above embodiments, this embodiment further improves upon the following technical solution: symmetrically arranged connecting bolt groups are provided on both sides of the anti-rope pulley seat 61, and the connecting bolt groups include a number of connecting bolts 611 arranged in a straight line.

[0039] As shown in the figure, the connecting bolt group includes three connecting bolts 611 arranged in a straight line. The anti-rope wheel seat 61 is fixed to the suspension member 7 by the connecting bolts 611 to improve the connection strength.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fall protection designed elevator suspension device, comprising: Comprising: The deflector sheave seat is fixedly installed on the suspension member, the deflector sheave is rotatably installed on the deflector sheave seat, the suspension steel wire rope sequentially bypasses the traction sheave and the deflector sheave and then is connected to the rope socket assembly, and the rope socket assembly is fixedly installed on the machine room bearing structure; The steel wire rope secondary protection device includes a blocking rod penetrating through the deflector sheave seat, and the blocking rod is arranged above the deflector sheave; Wherein, a rope socket load sensor is arranged in the rope socket assembly.

2. The elevator suspension device for fall protection design according to claim 1, characterized in that, The suspension member is a car or a counterweight.

3. The elevator suspension device for fall protection design according to claim 1, characterized in that, The steel wire rope secondary protection device further includes a locking plate, the locking plate is fixedly installed in the deflector sheave seat through a first bolt, and the locking plate is inserted into the blocking rod.

4. The elevator suspension device for fall protection design according to claim 3, characterized in that, The locking plates are symmetrically arranged on both sides of the deflector sheave seat.

5. The elevator suspension device for fall protection design according to claim 1, characterized in that, The deflector sheave seat is in a "convex" shape.

6. The elevator suspension device for fall protection design according to claim 1, characterized in that, Connection bolt groups are symmetrically arranged on both sides of the deflector sheave seat, and each connection bolt group includes a plurality of connection bolts arranged in a straight line.

Images