Fault self-checking elevator band-type brake safety device

Abstract

The utility model provides a fault self-checking elevator band-type brake safety device. The fault self-checking elevator band-type brake safety device comprises a base, wherein a detection assembly is arranged at the top of the base; the detection assembly comprises a fixing block arranged on the top of the base, and two brake arms are rotatably arranged on the front face of the fixing block. According to the fault self-inspection elevator band-type brake safety device, when a brake shoe is abraded much to enable the return stroke line spacing of a compression spring to be increased, the right end of a second connecting rod can move more rightwards compared with normal conditions, then a sliding block slides to the position below a power connection groove, and under the action of an ejection spring, the sliding block can move more rightwards to the position below the power connection groove. According to the brake shoe self-checking device, the structure is simple and practical, self-checking of the brake shoe is achieved within the interval time of maintenance of a maintenance worker, and the problem that potential safety hazards exist in a brake device is solved.

Description

Technical Field

[0001] This utility model relates to the field of elevator brake safety devices, and in particular to a fault self-diagnostic elevator brake safety device. Background Technology

[0002] An elevator is an electromechanical device used to transport people and goods vertically or horizontally. It mainly consists of a mechanical system and an electrical system. The mechanical system includes the traction system and guiding system, while the electrical system is responsible for control and providing power. In terms of working principle, traction elevators drive the car through the friction between the traction sheave and the steel cables; hydraulic elevators use hydraulic power to move the piston and drive the car; and escalators use an electric motor to drive a chain to move the steps. Elevators have brought great convenience to people's lives and work and are an indispensable piece of equipment in modern buildings.

[0003] The elevator's brake is a crucial component of its safety system. When the elevator needs to stop, the control circuit sends a command to activate the brake device. The brake device typically consists of brake shoes and a brake wheel. The brake shoes grip the brake wheel tightly, using friction to prevent the wheel from rotating, thus stopping the elevator car. This braking method can quickly and effectively stop the elevator in normal stopping, malfunction, or emergency situations, preventing accidental movement or falls and ensuring the safety of passengers and equipment.

[0004] During the daily use of elevator brake devices, the brake shoes will wear down due to friction with the brake wheel. When the wear reaches a certain level, the brake shoes need to be replaced. In the current technology, whether the brake shoes need to be replaced depends on the maintenance worker's judgment of the wear degree of the brake shoes. However, in reality, maintenance workers often only inspect the brake at intervals, and may not be able to detect the wear of the brake shoes in time, which may lead to safety hazards in the brake device.

[0005] Therefore, it is necessary to provide a fault-detecting elevator brake safety device to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a fault-detecting elevator brake safety device, which solves the problem that in some existing elevator brake devices, it is not convenient to detect the wear of the brake shoes in real time during use, resulting in the inability to detect the need for replacement in a timely manner.

[0007] To solve the above-mentioned technical problems, this utility model provides a fault self-checking elevator brake safety device, comprising: a base, wherein a detection component is provided on the top of the base;

[0008] The detection component includes a fixing block disposed on the top of the base. Two brake arms are rotatably disposed on the front of the fixing block. A sliding rod is horizontally disposed on the top of the two brake arms on opposite sides. The left and right ends of the sliding rod pass through the sides of the two brake arms that are close to each other and extend to the sides of the two brake arms that are far apart from each other. A compression spring is disposed on the top of the sides of the two brake arms that are far apart from each other and on the peripheral side of the sliding rod.

[0009] Preferably, a first connecting rod is provided on the back of the compression spring on the left, a compensation block is rotatably provided at the rear end of the first connecting rod, and a second connecting rod is rotatably provided on the back of the compensation block.

[0010] Preferably, a placement plate is provided on the top of the base and on the rear side of the fixing block, and a detection block is provided on the top of the front side of the placement plate. The right end of the second connecting rod passes through the right side of the detection block and extends to its inner side.

[0011] Preferably, a guide rod is provided laterally on the inner side of the detection block, and a sliding block is provided on the peripheral side of the guide rod that can slide left and right along its length. The right end of the second connecting rod is fixedly connected to the left side of the sliding block. A power receiving groove is provided on the front of the detection block and above the guide rod. An alarm is provided on the top left side of the placement plate, and the top of the alarm is connected to the power receiving groove by a wire.

[0012] Preferably, an ejector post is provided on the inner side of the sliding block, which can slide up and down, and an ejector spring is provided at the bottom end of the ejector post, which is located on the inner side of the sliding block.

[0013] Preferably, an electromagnet is provided on the top of the placement plate and on the top of the two brake arms on opposite sides.

[0014] Compared with related technologies, the fault self-checking elevator brake safety device provided by this utility model has the following beneficial effects:

[0015] This utility model provides a fault self-checking elevator brake safety device. When the brake shoes experience significant wear, increasing the return travel distance of the compression spring, the right end of the second connecting rod will move further to the right than normal. This causes the sliding block to slide below the electrical connection slot. Under the action of the ejector spring, the ejector column pushes out to energize the electrical connection slot, causing the alarm to activate and issue an alarm message to personnel. The structure is simple and practical, enabling the brake shoes to perform self-checks during maintenance intervals, thus avoiding potential safety hazards in the brake device. Attached Figure Description

[0016] Figure 1A schematic diagram of a preferred embodiment of a fault-detecting elevator brake safety device provided by this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the top view of the sliding rod section shown;

[0018] Figure 3 for Figure 1 The diagram shows a front view of the detection block.

[0019] The following are the labels in the diagram: 1. Base; 2. Detection component; 21. Fixing block; 22. Brake arm; 23. Sliding rod; 24. Compression spring; 25. First connecting rod; 26. Compensation block; 27. Second connecting rod; 28. Placement plate; 29. ​​Detection block; 3. Guide rod; 4. Sliding block; 5. Electrical connection slot; 6. Alarm; 7. Ejection column; 8. Ejection spring; 9. Electromagnet. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in Figure 1 A schematic diagram of a preferred embodiment of a fault-detecting elevator brake safety device provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the top view of the sliding rod section shown; Figure 3 for Figure 1 The structural schematic diagram of the front view of the detection block shown shows a fault self-testing elevator brake safety device, including: a base 1, and a detection component 2 is provided on the top of the base 1;

[0022] The detection component 2 includes a fixing block 21 disposed on the top of the base 1. Two brake arms 22 are rotatably disposed on the front of the fixing block 21. A sliding rod 23 is horizontally disposed on the top of the opposite side of the two brake arms 22. The left and right ends of the sliding rod 23 pass through the side of the two brake arms 22 that are close to each other and extend to the side of the two brake arms 22 that are far apart from each other. A compression spring 24 is disposed on the top of the side of the two brake arms 22 that are far apart from each other and on the peripheral side of the sliding rod 23.

[0023] When the brake device is in use, energizing the electromagnet 9 causes the brake arms 22 on both sides to rotate outward against the elastic force of the compression springs 24, ensuring that the brake wheel can rotate. Conversely, when the electromagnet 9 is de-energized, the compression springs 24 push the brake arms 22 on both sides to clamp together, braking the brake wheel. On this basis, the far ends of the two compression springs 24 are fixed on the sliding rod 23 and do not move. The ends of the two compression springs 24 that are close to each other generate a pushing force on the brake arms 22. At the same time, the ends of the compression springs 24 that are close to each other will also move inward a small distance, causing the brake shoes to clamp the brake wheel for braking. The distance that the ends of the compression springs 24 move inward represents the distance from the brake shoes to both sides of the brake wheel. As the brake shoes wear, this distance will continue to increase.

[0024] A first connecting rod 25 is provided on the back of the left compression spring 24, a compensation block 26 is rotatably provided at the rear end of the first connecting rod 25, and a second connecting rod 27 is rotatably provided on the back of the compensation block 26.

[0025] Since the left end of the compression spring 24 is fixed to the end of the sliding rod 23, and the right end is fixed to the brake arm 22, the brake arm 22 rotates in an arc along the fixed block 21, causing the right end of the compression spring 24 to rotate in an arc. The first connecting rod 25, which is fixed to the right end of the compression spring 24, also rotates in an arc, while the second connecting rod 27 can only move left and right. Thus, the vertical motion interference is compensated by the rotation of the compensation block 26.

[0026] A placement plate 28 is provided on the top of the base 1 and behind the fixing block 21. A detection block 29 is provided on the top of the front of the placement plate 28. The right end of the second connecting rod 27 passes through the right side of the detection block 29 and extends to its inner side.

[0027] A guide rod 3 is horizontally arranged on the inner side of the detection block 29. A sliding block 4 is arranged on the periphery of the guide rod 3, which can slide left and right along its length. The right end of the second connecting rod 27 is fixedly connected to the left side of the sliding block 4. A power receiving groove 5 is opened on the front of the detection block 29 and above the guide rod 3. An alarm 6 is arranged on the top left side of the placement plate 28. The top of the alarm 6 is connected to the power receiving groove 5 by a wire.

[0028] By setting the detection block 29, the second connecting rod 27 drives the sliding block 4 to move to the right on the circumferential side of the guide rod 3 (that is, the brake arm 22 is in the braking state at this time). When the brake shoe is severely worn and needs to be replaced, the compression spring 24 increases the distance to the right, thereby causing the second connecting rod 27 to drive the sliding block 4 to move to the bottom of the electrical connection slot 5. Then, under the action of the ejection spring 8, the ejection column 7 ejects and energizes the electrical connection slot 5, so that the alarm 6 works and sends an alarm message to the personnel.

[0029] An ejector post 7 is provided on the inner side of the sliding block 4, which can slide up and down. An ejector spring 8 is provided at the bottom of the ejector post 7, which is located on the inner side of the sliding block 4.

[0030] An electromagnet 9 is provided on the top of the placement plate 28 and on the top of the two brake arms 22 on opposite sides.

[0031] The working principle of the fault self-checking elevator brake safety device provided by this utility model is as follows:

[0032] Step 1: During normal use, by energizing the electromagnet 9, the brake arms 22 on both sides are rotated outward against the elastic force of the compression spring 24, ensuring that the brake wheel can rotate. Conversely, when the electromagnet 9 is de-energized, the brake arms 22 on both sides are pushed to clamp under the action of the compression spring 24, thus braking the brake wheel.

[0033] Step 2: When the brake shoes are worn out and need to be replaced, the electromagnet 9 is de-energized. The right end of the compression spring 24 causes the brake arm 22 to rotate, requiring more travel. At this time, the right end of the compression spring 24 drives the first connecting rod 25 and the second connecting rod 27 to move to the right, so that the sliding block 4 slides to the right on the guide rod 3, and finally the sliding block 4 is placed below the power receiving slot 5. Under the action of the ejection spring 8, the ejection column 7 pushes out to energize the power receiving slot 5, so that the alarm 6 works and sends an alarm message to the personnel.

[0034] Compared with related technologies, the fault self-checking elevator brake safety device provided by this utility model has the following beneficial effects:

[0035] When the brake shoes experience significant wear, increasing the return stroke distance of the compression spring 24, the right end of the second connecting rod 27 will move further to the right than normal. This causes the sliding block 4 to slide below the electrical contact groove 5. Under the action of the ejector spring 8, the ejector column 7 ejects, energizing the electrical contact groove 5 and causing the alarm 6 to activate and issue an alarm message to personnel. The structure is simple and practical, enabling the brake shoes to perform self-checks during maintenance intervals, thus avoiding potential safety hazards in the brake device.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fault self-testing elevator brake safety device, characterized in that, include: A base (1) is provided with a detection component (2) on its top. The detection component (2) includes a fixing block (21) disposed on the top of the base (1). Two brake arms (22) are rotatably disposed on the front of the fixing block (21). A sliding rod (23) is horizontally disposed on the top of the opposite side of the two brake arms (22). The left and right ends of the sliding rod (23) pass through the side of the two brake arms (22) that are close to each other and extend to the side of the two brake arms (22) that are far apart from each other. A compression spring (24) is disposed on the top of the side of the two brake arms (22) that are far apart from each other and on the circumferential side of the sliding rod (23).

2. A brake safety device for an elevator according to claim 1, characterized in that The compression spring (24) on the left side is provided with a first connecting rod (25) on its back side. The rear end of the first connecting rod (25) is rotatably provided with a compensation block (26). The back side of the compensation block (26) is rotatably provided with a second connecting rod (27).

3. A brake safety device for an elevator according to claim 2, characterized in that A placement plate (28) is provided on the top of the base (1) and on the rear side of the fixing block (21). A detection block (29) is provided on the top of the front of the placement plate (28). The right end of the second connecting rod (27) passes through the right side of the detection block (29) and extends to its inner side.

4. A brake safety device for an elevator according to claim 3, characterized in that The inner side of the detection block (29) is provided with a guide rod (3), and the periphery of the guide rod (3) is provided with a sliding block (4) that can slide left and right along its length. The right end of the second connecting rod (27) is fixedly connected to the left side of the sliding block (4). The front of the detection block (29) and above the guide rod (3) is provided with a power receiving groove (5). The top of the left side of the placement plate (28) is provided with an alarm (6), and the top of the alarm (6) is connected to the power receiving groove (5) by a wire.

5. A fault self-testing elevator brake safety device according to claim 4, characterized in that The inner side of the sliding block (4) is provided with an ejector post (7) that can slide up and down, and an ejector spring (8) is provided at the bottom of the ejector post (7) and located inside the sliding block (4).

6. A brake safety device for an elevator according to claim 3, wherein An electromagnet (9) is provided on the top of the placement plate (28) and on the top of the two brake arms (22) on opposite sides.

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