Guard against disengagement of the car or counterweight from the suspension

Abstract

The utility model belongs to elevator safety protection technical field, specifically disclose a kind of protection device for preventing car or counterweight and suspension device disengagement, including the protection device body being installed in the both sides of suspension device, the protection device body has gap between steel wire rope and protection device body when suspension device normal work, when disengaging original constraint of steel wire rope sag, steel wire rope is suspended on the protection device body, the utility model is equipped with protection device body by being installed in the both sides of counter-rope wheel, the protection device body mainly by the connection support, protection rod and the connecting piece component's shape structure, steel wire rope passes through shape structure, the protection device body can directly jam steel wire rope in the moment of counter-rope wheel drop, fall risk is blocked from mechanical level, meet the requirement of elevator safety standard to the safety of protection device failure, need not rely on electrical trigger or speed sensor response, response speed is high, improve the security of elevator use.

Description

Technical Field

[0001] This utility model relates to the field of elevator safety protection technology, specifically a protective device to prevent the car or counterweight from detaching from the suspension device. Background Technology

[0002] In elevator systems, suspension devices (such as steel wire ropes) support and guide the car or counterweight through deflector pulleys. If the deflector pulleys fall off due to wear, loose installation, or component failure, the suspension devices will deviate from their original track, lose their restraint on the car or counterweight, and thus cause a fall accident.

[0003] Currently, the safety protection of elevator suspension systems largely relies on the structural strength design of the anti-derailment sheave itself (such as adding anti-derailment baffles) or traditional accidental movement protection devices (such as rope clamps) and traditional rope breakage protection devices (such as safety clamps). Some patents monitor the sheave status by placing sensors near the anti-derailment sheave. However, the safety protection of the above-mentioned elevator suspension systems can usually only provide early warnings and cannot directly prevent the fall after the wire rope detaches, which reduces the safety of elevator use. For example, traditional anti-derailment baffles can only prevent the wire rope from shifting during normal operation of the anti-derailment sheave and cannot cope with the extreme situation of the entire anti-derailment sheave detaching. The trigger condition for rope breakage protection devices (such as safety clamps) is wire rope breakage or significant slack, and they cannot intervene in time when the anti-derailment sheave detaches and the wire rope has not yet fully slacked. The monitoring and early warning devices do not have mechanical protection functions and have a safety lag.

[0004] To address the aforementioned deficiencies, we need to propose a protective device to prevent the car or counterweight from detaching from the suspension system. Utility Model Content

[0005] The purpose of this invention is to provide a protective device to prevent the car or counterweight from detaching from the suspension device. At the moment the anti-rope pulley falls off, the protective device can directly lock the wire rope without relying on electrical triggering or speed sensor sensing, thereby improving the safety of elevator use and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a protective device for preventing the car or counterweight from detaching from the suspension device, comprising a protective device body installed on both sides of the suspension device. When the suspension device is working normally, there is a gap between the wire rope and the protective device body. When the wire rope is detached from its original constraint and hangs down, the wire rope is suspended on the protective device body.

[0007] The protective device body includes a connecting bracket that is inclinedly installed on two crossbeams. A protective rod is detachably installed at one end of the connecting bracket. The protective rod and the two connecting brackets form a U-shaped structure for the steel wire rope to pass through. A connector with an adjustable installation angle is installed at the other end of the connecting bracket.

[0008] Preferably, the protective rod has external threaded sections at both ends, and the two ends of the protective rod are threadedly connected to the connecting bracket with a first nut. The connecting bracket has through holes for the protective rod to pass through.

[0009] Preferably, the protective rod is one of aluminum alloy rod, galvanized steel rod, and stainless steel rod.

[0010] Preferably, the connector includes a first screw post and second screw posts located on both sides of the first screw post. One end of each of the first and second screw posts is threaded with a second nut. The connecting bracket has through holes for mounting the first and second screw posts.

[0011] Preferably, the first screw post and the second screw post are located on the same horizontal line, and the first screw post and the second screw post are equidistant.

[0012] Preferably, the crossbeam on which the connecting bracket is installed has a plurality of mounting holes at equal intervals for mounting the second screw post, and the distribution direction of the plurality of mounting holes is perpendicular to the installation direction of the crossbeam.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a protective device body installed on both sides of the anti-corrosion pulley. The protective device body mainly consists of a U-shaped structure composed of a connecting bracket, a protective rod, and connecting parts. The steel wire rope passes through the U-shaped structure, and at the moment the anti-corrosion pulley falls off, the protective device body can directly lock the steel wire rope, mechanically preventing the risk of falling. This meets the elevator safety standards for safety in case of protective device failure. It does not rely on electrical triggering or speed sensor sensing, has a high response speed, and improves the safety of elevator use.

[0015] 2. This utility model has a simple structure, no complicated transmission mechanism, and is applicable to elevator cars or counterweight frames of various specifications, which facilitates daily inspection and maintenance and reduces the cost of later use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the protective device body of this utility model;

[0018] Figure 3 This is a schematic diagram of the connector structure of this utility model.

[0019] In the diagram: 1. Reverse rope pulley; 2. Steel wire rope; 3. Protective device body; 31. Connecting bracket; 32. Connector; 321. First screw post; 322. Second nut; 323. Mounting hole; 324. Second screw post; 33. Protective rod; 34. First nut; 4. Crossbeam; 5. Rotating shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a protective device to prevent the car or counterweight from detaching from the suspension device, including a protective device body 3 installed on both sides of the suspension device. When the suspension device is working normally, there is a gap between the wire rope 2 and the protective device body 3. When the wire rope 2 is detached from its original constraint and hangs down, the wire rope 2 is suspended on the protective device body 3. When the anti-rope pulley 1 fails and falls off, and the car or counterweight loses its vertical guiding constraint and shifts downward, the wire rope 2 will touch the horizontally set protective rod 33. Since the protective rod 33 is fixed to the connecting bracket 31 and spans the crossbeam 4, the wire rope 2 is blocked by the protective rod 33 and suspended on it, thereby avoiding the car or counterweight from falling due to complete detachment from the suspension device.

[0022] The suspension device includes a counter-rotating sheave 1 mounted on the crossbeam 4 and multiple steel wire ropes 2 sleeved on the counter-rotating sheave 1. A rotating shaft 5 is fixed at the center of the counter-rotating sheave 1, and the two ends of the rotating shaft 5 are rotatably connected to the crossbeam 4. The crossbeam 4 is the core support structure of the elevator counterweight system. The counterweight frame is fixed by bolts or welding. The counterweight block (usually cast iron or concrete) is placed inside the counterweight frame. Its mass needs to be precisely matched with the car's self-weight and 40%-50% of the rated load to balance the load during elevator operation, reduce motor power loss, and extend the life of the steel wire ropes 2. The protective device body 3 includes connecting brackets 31 that are inclinedly mounted on the two crossbeams 4. A protective rod 33 is detachably installed at one end of the connecting bracket 31. The protective rod 33 and the two connecting brackets 31 form a U-shaped structure for the steel wire ropes 2 to pass through. The other end of the connecting bracket 31 is equipped with a connector 32 with an adjustable installation angle.

[0023] When the protective device body 3 is installed at the anti-rope pulley on the car side, its protective principle is the same as that installed on the counterweight side, and will not be repeated here.

[0024] The protective device body 3 is mainly composed of a U-shaped structure consisting of a connecting bracket 31, a protective rod 33, and a connector 32. The steel wire rope 2 passes through the U-shaped structure. At the moment the anti-rope pulley falls off, the protective device body 3 can directly lock the steel wire rope 2, mechanically preventing the risk of the car or counterweight falling. This meets the elevator safety standards for safety in case of protective device failure. It does not rely on electrical triggering or speed sensor sensing, has a high response speed, and improves the safety of elevator use. In addition, the protective device body 3 has a simple structure, no complex transmission mechanism, and is suitable for elevator cars or counterweight frames of various specifications. It is convenient for daily inspection and maintenance and reduces the later use cost.

[0025] The protective rod 33 has external threaded sections at both ends. The two ends of the protective rod 33 pass through the connecting bracket 31 and are threadedly connected to the first nut 34. The connecting bracket 31 has through holes for the protective rod 33 to pass through. During installation, the connecting bracket 31 is first installed parallel to the crossbeam 4. Then, the two ends of the protective rod 33 pass through the two connecting brackets 31 respectively. The first nut 34 is then threadedly connected to the two ends of the protective rod 33, so that the connecting bracket 31 is located between the two first nuts 34. The wire rope 2 contacts the smooth part in the middle of the protective rod 33, which can effectively reduce the friction between the protective rod 33 and the wire rope 2 and reduce the wear of the wire rope 2 caused by friction. In addition, the threaded engagement between the first nut 34 and the protective rod 33 makes the protective rod 33 detachable, which is convenient for installing or removing the protective rod 33 according to actual installation needs.

[0026] The protective rod 33 is made of one of the following: aluminum alloy rod, galvanized steel rod, and stainless steel rod. The protective rod 33 is a solid rod. The aluminum alloy rod has high tensile strength and impact resistance, which allows it to reduce the weight of the overall structure while ensuring sufficient load-bearing capacity when suspending the steel wire rope 2. The galvanized steel rod has high load-bearing capacity and deformation resistance, lower raw material cost, and relatively simple processing. The stainless steel rod can maintain stable performance in various harsh environments, effectively resist external impacts, and is not easily deformed or damaged.

[0027] The connector 32 includes a first screw post 321 and second screw posts 324 located on both sides of the first screw post 321. One end of each of the first screw post 321 and the second screw post 324 is threaded with a second nut 322. The connecting bracket 31 has through holes for installing the first screw post 321 and the second screw post 324. The crossbeam 4 only needs to have through holes for installing the first screw post 321 and the second screw post 324. The connector 32 facilitates the installation of the connecting bracket 31 and the crossbeam 4, improving the flexibility and convenience of the installation of the connecting bracket 31.

[0028] The first screw post 321 and the second screw post 324 are located on the same horizontal line, and the first screw post 321 and the second screw post 324 are equidistant. The equidistant distribution of the first screw post 321 and the second screw post 324 improves the firmness of the connection between the connecting bracket 31 and the crossbeam 4.

[0029] The crossbeam 4 on which the connecting bracket 31 is mounted has multiple mounting holes 323 evenly spaced for mounting the second screw post 324. The distribution direction of these mounting holes 323 is perpendicular to the mounting direction of the crossbeam 4, allowing the connecting bracket 31 to be adjusted in installation angle with the first screw post 321 as its axis. This enables the connecting bracket 31 to accommodate the installation requirements of different diameter anti-rope pulleys 1. Figure 3 As shown, when both second screw posts 324 are located in the middle mounting hole 323, the tilt angle between the connecting bracket 31 and the crossbeam 4 is centered, such as 60°; when the left second screw post 324 is located in the upper mounting hole 323 and the right second screw post 324 is located in the lower mounting hole 323, the tilt angle between the connecting bracket 31 and the crossbeam 4 is the largest, such as 85°; when the left second screw post 324 is located in the lower mounting hole 323 and the right second screw post 324 is located in the upper mounting hole 323, the tilt angle between the connecting bracket 31 and the crossbeam 4 is the smallest, such as 45°.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for preventing the car or counterweight from detaching from the suspension device, characterized in that: Includes a protective device body (3) installed on both sides of the suspension device. When the suspension device is working normally, there is a gap between the wire rope (2) and the protective device body (3). When the wire rope (2) is released from its original constraint and hangs down, the wire rope (2) is suspended on the protective device body (3). The protective device body (3) includes a connecting bracket (31) that is inclinedly installed on the two side beams (4). A protective rod (33) is detachably installed at one end of the connecting bracket (31). The protective rod (33) and the two connecting brackets (31) form a U-shaped structure through which the wire rope (2) passes. A connector (32) with an adjustable installation angle is installed at the other end of the connecting bracket (31).

2. The protective device for preventing the car or counterweight from detaching from the suspension device according to claim 1, characterized in that: The protective rod (33) has external threaded sections at both ends. The two ends of the protective rod (33) are threaded through the connecting bracket (31) and connected to the first nut (34). The connecting bracket (31) has through holes for the protective rod (33) to pass through.

3. A protective device for preventing the car or counterweight from detaching from the suspension device according to claim 2, characterized in that: The protective rod (33) is made of one of aluminum alloy rod, galvanized steel rod and stainless steel rod.

4. A protective device for preventing the car or counterweight from detaching from the suspension device according to claim 1, characterized in that: The connector (32) includes a first screw post (321) and a second screw post (324) located on both sides of the first screw post (321). One end of the first screw post (321) and the second screw post (324) are threaded with a second nut (322). The connecting bracket (31) has through holes for mounting the first screw post (321) and the second screw post (324).

5. A protective device for preventing the car or counterweight from detaching from the suspension device according to claim 4, characterized in that: The first screw post (321) and the second screw post (324) are located on the same horizontal line, and the first screw post (321) and the second screw post (324) are equidistant.

6. A protective device for preventing the car or counterweight from detaching from the suspension device according to claim 5, characterized in that: The crossbeam (4) on which the connecting bracket (31) is installed has a plurality of mounting holes (323) at equal intervals for mounting the second screw post (324), and the distribution direction of the plurality of mounting holes (323) is perpendicular to the installation direction of the crossbeam (4).

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