Counterweight diversion sheave steel wire rope anti-falling protection device

Abstract

The utility model discloses a counterweight diversion sheave steel wire rope anti-drop protection device which comprises two groups of counterweight upper cross beams, diversion sheave assemblies, a sheave top protection plate and anti-drop channel steel, the two groups of counterweight upper cross beams are symmetrically arranged, and the sheave top protection plate is fixed at the tops of the two groups of counterweight upper cross beams and connected with the two groups of counterweight upper cross beams through bolt assemblies. The rope sheave top protection plate is located above the diversion sheave assembly, the anti-disengagement channel steel is installed above the rope sheave top protection plate, the rope sheave top protection plate and the anti-disengagement channel steel are additionally arranged on the basis of an existing counterweight diversion sheave limiting device to serve as a secondary protection structure, and when the limiting device fails due to poor assembly, long-term abrasion or vibration, the rope sheave top protection plate and the anti-disengagement channel steel can be prevented from being damaged. The secondary protection structure can effectively prevent the steel wire rope from being separated from the diversion sheave rope groove, and the risk that the counterweight housing and the car frame fall into a shaft is avoided.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a counterweight reverse rope pulley wire rope anti-derailment protection device. Background Technology

[0002] In modern elevator systems, the counterweight sheave is an indispensable component of vertical traction elevators, especially in systems with a non-1:1 traction ratio. Its function is to achieve balanced movement between the counterweight and the car by altering the direction of the wire rope. However, existing counterweight sheave limiting devices pose certain safety hazards. Traditional counterweight sheave limiting devices primarily rely on structures such as clamps to restrict the axial movement of the sheave shaft. In actual use, due to factors such as poor assembly, vibration during long-term operation, and wear, these limiting devices may fail, causing the wire rope to detach from the sheave groove. Lacking an effective secondary protection mechanism, once the limiting device fails, the risk of wire rope detachment cannot be effectively controlled. If the wire rope detaches, the counterweight frame and car frame may fall into the shaft, leading to a serious safety accident.

[0003] Therefore, in view of the risks of wire rope detachment due to limit device failure and the counterweight frame and car frame falling into the shaft in the existing technology, there is an urgent need for a protective device that can effectively prevent wire rope detachment from the counterweight sheave, so as to improve the safety and reliability of elevator operation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model relates to a counterweight reverse rope pulley wire rope anti-derailment protection device. This device has a simple and reliable structure, effectively solves the aforementioned technical problems, and is suitable for widespread use. To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A counterweight anti-derailment protection device for steel wire ropes includes a counterweight upper crossbeam, a anti-derailment sheave assembly, a sheave top guard plate, and an anti-derailment channel steel. Two sets of counterweight upper crossbeams are symmetrically arranged. The sheave top guard plate is fixed to the top of the two sets of counterweight upper crossbeams and connected to them by bolt assemblies. The sheave top guard plate is located above the anti-derailment sheave assembly, and the anti-derailment channel steel is installed above the sheave top guard plate.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the cross-section of the anti-detachment steel is U-shaped, the opening of the anti-detachment steel faces vertically upward, the flat plate part of the anti-detachment steel is attached to the top guard plate of the rope wheel and connected to the top guard plate of the rope wheel and the upper crossbeam of the counterweight by fasteners.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: it also includes a U-bolt. A U-bolt is installed below the bottom horizontal plate of the counterweight upper beam. The two shanks of the U-bolt pass through the bottom horizontal plate of the counterweight upper beam from bottom to top and then cooperate with the nut. The U-bolt is used to limit the support shaft of the anti-rope pulley assembly.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: a protective cover is also installed at the bottom of the counterweight upper crossbeam. The protective cover is connected to the counterweight upper crossbeam by a bolt assembly. The protective cover covers the anti-rope pulley assembly inside. An opening is provided on one side of the protective cover for the support shaft of the anti-rope pulley assembly to pass through.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: a vertically arranged reinforcing plate is also provided between the top and bottom horizontal plates of the counterweight upper beam.

[0010] The outstanding and beneficial technical effects of this utility model compared to the prior art are as follows: Based on the existing counterweight reverse rope sheave limiting device, a rope sheave top guard plate and anti-detachment groove steel are added as secondary protection structures. When the limiting device fails due to poor assembly, long-term wear, or vibration, the secondary protection structure can effectively prevent the wire rope from detaching from the reverse rope sheave groove, avoiding the risk of the counterweight frame and car frame falling into the shaft, and significantly improving the safety of elevator operation. The anti-detachment groove steel is fixed to the rope sheave guard and the top of the counterweight upper beam with high-strength fasteners. Its structure has undergone strict strength calculations and can withstand the maximum load during elevator operation, ensuring stability in long-term use, reducing elevator downtime caused by wire rope detachment, and improving the operating efficiency and reliability of the elevator. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall installation of the device;

[0012] Figure 2 This is an enlarged schematic diagram of the device. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0014] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0016] To solve the above technical problems, such as Figure 1-2 As shown, this utility model designs a counterweight anti-derailment protection device for the steel wire rope of a counterweight reel, including a counterweight upper crossbeam 1, a reel assembly 2, a reel top guard plate 3, and an anti-derailment channel steel 4. Two sets of counterweight upper crossbeams 1 are symmetrically arranged. The reel top guard plate 3 is fixed to the top of the two sets of counterweight upper crossbeams 1 and connected to them by bolt assemblies. The reel top guard plate 3 is located above the reel assembly 2, and the anti-derailment channel steel 4 is installed above the reel top guard plate 3. By setting the reel top guard plate 3 above the reel assembly 2 and installing the anti-derailment channel steel 4 above it, a double protection structure is formed. When the limiting device of the reel fails, The anti-detachment groove steel 4 effectively prevents the wire rope from detaching from the deflector groove, avoiding the risk of the counterweight frame and car frame falling into the shaft. This dual protection mechanism significantly improves the safety of elevator operation. The anti-detachment groove steel 4 is connected to the top guard plate 3 of the rope sheave and the upper crossbeam 1 of the counterweight through fasteners to form a stable protective structure. This structural design can not only withstand the impact force when the wire rope detaches, but also maintain stability during long-term operation, ensuring the safe operation of the elevator. By effectively preventing the wire rope from detaching from the deflector, the elevator downtime caused by wire rope detachment is reduced, improving the operating efficiency and reliability of the elevator.

[0017] In this embodiment, it is further preferred that the cross-section of the anti-derailment steel 4 is U-shaped, the opening of the anti-derailment steel 4 faces vertically upward, the flat part of the anti-derailment steel 4 is attached to the top guard plate 3 of the rope wheel and connected to the top guard plate 3 of the rope wheel and the upper crossbeam 1 of the counterweight by fasteners. The anti-derailment steel 4 adopts a modular and detachable design, which makes the installation process simple and quick, without the need for complicated welding or special tools, greatly shortening the installation time. The anti-derailment steel 4 is made of standard profiles, with low material cost. At the same time, its installation process is simple, without the need for additional complicated equipment or processes, further reducing the installation cost. In addition, compared with the traditional planar or straight structure, it has higher bending strength and torsional performance. This structure can effectively withstand the impact force generated when the wire rope detaches, ensuring that it can still remain stable in extreme cases and preventing the wire rope from slipping further.

[0018] In this embodiment, it is further preferred to include a U-bolt 5. A U-bolt 5 is installed below the bottom horizontal plate of the counterweight upper beam 1. The two rods of the U-bolt 5 pass through the bottom horizontal plate of the counterweight upper beam 1 from bottom to top and then cooperate with the nut. The U-bolt 5 is used to limit the support shaft of the anti-cord wheel assembly 2. The installation method of the U-bolt 5 can ensure the precise alignment and fixation of the anti-cord wheel assembly 2 and reduce installation errors. This design not only improves the installation efficiency, but also ensures the stability of the anti-cord wheel assembly 2 during operation.

[0019] In this embodiment, it is further preferred that a protective cover 6 is installed at the bottom of the counterweight upper beam 1. The protective cover 6 is connected to the counterweight upper beam 1 by a bolt assembly. The protective cover 6 covers the anti-reverse sheave assembly 2 inside. One side of the protective cover 6 has an opening for the support shaft of the anti-reverse sheave assembly 2 to pass through. By covering the anti-reverse sheave assembly 2 inside, the protective cover 6 can effectively reduce the impact of the external environment on the anti-reverse sheave assembly 2, such as dust and oil, thereby extending the service life of the anti-reverse sheave assembly 2 and reducing downtime due to failure. In addition, the protective cover 6 can effectively reduce the vibration and noise generated by the anti-reverse sheave assembly 2 during operation, optimizing the elevator's operating environment.

[0020] In this embodiment, a further preferred embodiment includes a vertically arranged reinforcing plate 7 between the top and bottom horizontal plates of the counterweight upper beam 1, which significantly enhances the bending and torsional resistance of the counterweight upper beam 1. This design can effectively cope with various loads generated during elevator operation, ensuring the stability of the counterweight upper beam 1.

[0021] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A counterweight reverse rope reel wire rope anti-derailment protection device, characterized in that: It includes the counterweight upper crossbeam, the backsheave assembly, the sheave top guard plate, and the anti -脱 channel steel. Two groups of counterweight upper crossbeams are symmetrically arranged. The sheave top guard plate is fixed on the tops of the two groups of counterweight upper crossbeams and connected to them through bolt assemblies. The sheave top guard plate is located above the backsheave assembly, and the anti -脱 channel steel is installed above the sheave top guard plate.

2. The anti-derailment protection device for the steel wire rope of the counterweight reel according to claim 1, characterized in that: The cross - section of the anti -脱 channel steel is in a C - shape, the opening of the anti -脱 channel steel is vertically upward, and the flat part of the anti -脱 channel steel is in contact with the sheave top guard plate and connected to the sheave top guard plate and the counterweight upper crossbeam through fasteners.

3. The anti-derailment protection device for the counterweight reel wire rope according to claim 2, characterized in that: It also includes U - bolts. U - bolts are installed under the bottom cross - plate of the counterweight upper crossbeam. The two rod parts of the U - bolts pass through the bottom cross - plate of the counterweight upper crossbeam from bottom to top and are mated with nuts. The U - bolts are used to limit the support shaft of the backsheave assembly.

4. The anti-derailment protection device for the steel wire rope of the counterweight reel according to claim 3, characterized in that: A shield is also installed at the bottom of the counterweight upper crossbeam. The shield is connected to the counterweight upper crossbeam through bolt assemblies. The shield covers the backsheave assembly inside, and there is an opening on one side of the shield for the support shaft of the backsheave assembly to pass through.

5. The anti-derailment protection device for the steel wire rope of the counterweight reel according to claim 4, characterized in that: A vertically arranged reinforcement plate is also provided between the top cross - plate and the bottom cross - plate of the counterweight upper crossbeam.

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