Device for measuring gap between brake wheel and brake shoe of elevator drum brake

Abstract

The utility model relates to the technical field of brake performance detection of elevator brakes, and discloses a brake wheel and brake shoe gap measuring device of an elevator drum brake, which comprises a shell, a fixing mechanism comprises two measuring bases, one sides, far away from each other, of the two measuring bases are fixedly connected with a guide shaft, and the guide shaft is fixedly connected with the shell. An S-pole magnet is fixedly connected to the interior of the guide shaft, a mounting shaft is slidably connected to the interior of the guide shaft, and an N-pole magnet is fixedly connected to the exterior of the mounting shaft. According to the utility model, the bottom of the mounting shaft is aligned with the interior of the guide shaft, then the mounting shaft is inserted into the interior of the guide shaft, and the plurality of L-shaped grabbing teeth are pushed to rotate in the insertion process of the mounting shaft, so that the mounting shaft is fixed in the insertion process; and the N-pole magnet fixed at the bottom of the mounting shaft is matched with the S-pole magnet in the guide shaft, so that the stability of the measuring mechanism in the measuring process is further ensured, and the measuring effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator brake performance testing technology, and in particular to a device for measuring the gap between the brake wheel and the brake shoe of an elevator drum brake. Background Technology

[0002] The clearance between the brake wheel and brake shoe in an elevator drum brake refers to the spatial distance between the surface of the brake wheel and the brake shoe. This clearance is usually determined by the design requirements and usage of the brake, directly affecting the braking effect and performance. If the clearance is too large, it may lead to insensitive braking and affect safety; if the clearance is too small, it may lead to excessive friction between the brake shoe and the brake wheel, generating overheating, and may even lead to premature wear. To accurately monitor this clearance, specialized measuring devices, such as clearance measuring instruments or sensors, are usually used. These devices can measure the clearance between the brake shoe and the brake wheel in real time or periodically, thereby ensuring that the elevator braking system is in optimal working condition and ensuring the safe operation of the elevator.

[0003] The working principle of the brake wheel and brake shoe clearance measuring device in an elevator drum brake can be achieved through mechanical or optical methods. Mechanical methods typically use tools such as calipers and clearance gauges to manually measure the distance between the brake wheel and brake shoe. Optical methods use optical devices, such as laser pointers or optical measuring instruments, to accurately measure the clearance using the principle of light reflection. Although optical methods offer higher precision, they still do not rely on sensor technology, primarily using optical elements for non-contact measurement of the clearance, reducing the impact of contact wear on the measurement results.

[0004] In existing technologies, some elevator drum brake gap measuring devices often result in inaccurate measurement results due to brake wheel eccentricity. Brake wheel eccentricity can cause changes in the gap between the brake and the brake shoe, thus affecting the accuracy of the measurement and consequently the evaluation and control of elevator braking performance. Therefore, this paper proposes a brake wheel and brake shoe gap measuring device for elevator drum brakes to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake. It aims to improve the problem that the measurement results are affected by the eccentricity of the brake wheel in some existing elevator drum brake gap measuring devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for measuring the gap between the brake wheel and the brake shoe of an elevator drum brake, comprising a housing, characterized in that: two mounting blocks are fixedly connected inside the housing, a fixing mechanism is fixedly connected to the opposite side of the two mounting blocks, a telescopic rod is rotatably connected to the outside of the fixing mechanism, and a measuring mechanism is rotatably connected to the outside of the telescopic rod.

[0007] The measuring mechanism includes a second ball joint, the left side of which is fixedly connected to the right side of the telescopic rod. A rotating rod is rotatably connected to the outside of the second ball joint. A scale block is fixedly connected to the front side of the rotating rod. Two sliding blocks are rotatably connected inside the scale block. A connecting shaft is fixedly connected to the front side of each of the two sliding blocks. A measuring probe is rotatably connected to the outside of the connecting shaft. A scale ruler is provided on the right side of the scale block. The front side of the measuring probe is a square block.

[0008] As a further description of the above technical solution: the fixing mechanism includes two measuring bases, the adjacent sides of the two measuring bases are fixedly connected to the distant sides of the two mounting blocks, the distant sides of the two measuring bases are fixedly connected to a guide shaft, an auxiliary clamping assembly is rotatably connected inside the guide shaft, an S-pole magnet is fixedly connected inside the guide shaft, a mounting shaft is slidably connected inside the guide shaft, an N-pole magnet is fixedly connected to the outside of the mounting shaft, the outside of the mounting shaft is slidably connected inside the guide shaft, a first ball joint is fixedly connected to the right side of the mounting shaft, and the telescopic rod is rotatably connected inside the first ball joint;

[0009] As a further description of the above technical solution: the auxiliary clamping assembly includes multiple rotating shafts, which are rotatably connected inside the guide shaft. L-shaped gripping teeth are fixedly connected to the outside of the multiple rotating shafts. The outside of the L-shaped gripping teeth is rotatably connected to the inside of the guide shaft. The adjacent sides of the multiple L-shaped gripping teeth are in contact with the outside of the mounting shaft.

[0010] As a further description of the above technical solution: two adjusting blocks are rotatably connected to the front side of the housing, brake pads are fixedly connected to the outside of the two adjusting blocks, an elevator brake wheel is fixedly connected to the front side of the housing, a pressure spring is fixedly connected to the inside of the adjusting blocks, and an electromagnet is fixedly connected to the top of the housing.

[0011] As a further description of the above technical solution: the scale block has an adjustment groove inside, the sliding block is slidably connected to the outside of the adjustment groove, guide blocks are fixedly connected to both sides of the sliding block, guide grooves are opened on both sides inside the adjustment groove, the guide blocks are slidably connected to the inside of the guide groove, and a directional through hole is opened on the front side of the scale block.

[0012] As a further description of the above technical solution: the guide shaft has a cavity inside, the mounting shaft is externally slidably connected to the inside of the cavity, and the S pole magnet is externally fixedly connected to the inside of the cavity;

[0013] As a further description of the above technical solution: the telescopic rod has a rotating groove inside, and the outside of the first ball joint is rotatably connected to the inside of the rotating groove inside the telescopic rod;

[0014] As a further description of the above technical solution: the rotating rod has a rotating groove inside, and the second ball joint is rotatably connected to the rotating groove inside the rotating rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, when measuring the elevator brake wheel and brake pads, the scale block fixed on the top of the rotating rod serves as a scale, and two connecting shafts slidably connected inside the scale block by two sliding blocks serve as support components for the measuring probe. The measuring probe, as the core component of the measurement, measures the elevator brake wheel and brake pads through a differential double-probe linkage structure, thereby eliminating the error caused by the eccentricity of the elevator brake wheel.

[0017] 2. In this utility model, when installing the measuring mechanism, the bottom of the mounting shaft is aligned with the inside of the guide shaft, and then the mounting shaft is inserted into the inside of the guide shaft. During the insertion of the mounting shaft, multiple L-shaped gripping teeth are pushed to rotate, thereby fixing the mounting shaft during the insertion process. The N-pole magnet fixed at the bottom of the mounting shaft and the S-pole magnet inside the guide shaft cooperate with each other to further ensure the stability of the measuring mechanism during the measurement process, thereby improving the measurement effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to the present invention.

[0019] Figure 2 This is a schematic diagram of the telescopic rod of a measuring device for the gap between the brake wheel and brake shoe of an elevator drum brake proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the second spherical joint of the measuring device for the gap between the brake wheel and the brake shoe of an elevator drum brake proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the sliding block of a device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake, as proposed in this utility model.

[0022] Legend:

[0023] 1. Housing; 2. Elevator brake wheel; 3. Mounting block; 4. Adjusting block; 5. Brake skin; 6. Electromagnet; 7. Pressure spring; 8. Measuring base; 9. Guide shaft; 10. S pole magnet; 11. N pole magnet; 12. L-shaped gripper; 13. Rotating shaft; 14. Mounting shaft; 15. Telescopic rod; 16. First ball joint; 17. Second ball joint; 18. Rotating rod; 19. Scale block; 20. Connecting shaft; 21. Measuring probe; 22. Sliding block. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1 , Figure 2 This utility model provides an embodiment of a device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake, comprising a housing 1, which is the external frame of the entire elevator drum brake and serves to support and protect it. Two mounting blocks 3 are fixedly connected inside the housing 1. The mounting blocks 3 are fixed structures inside the housing 1 and are used to support and house the measuring device. A fixing mechanism is fixedly connected to the far side of the two mounting blocks 3. A telescopic rod 15 is rotatably connected to the outside of the fixing mechanism. The telescopic rod 15 is one of the adjustment components of the measuring device and can adjust the length of the device as needed. A measuring mechanism is rotatably connected to the outside of the telescopic rod 15. The core function of the measuring mechanism is to perform actual gap measurement.

[0026] The fixing mechanism includes two measuring bases 8. The adjacent sides of the two measuring bases 8 are fixedly connected to the distant sides of the two mounting blocks 3. A guide shaft 9 is fixedly connected to the distant sides of the two measuring bases 8. An auxiliary clamping assembly is rotatably connected inside the guide shaft 9. An S-pole magnet 10 is fixedly connected inside the guide shaft 9. A mounting shaft 14 is slidably connected inside the guide shaft 9. An N-pole magnet 11 is fixedly connected to the outside of the mounting shaft 14. The outside of the mounting shaft 14 is slidably connected to the inside of the guide shaft 9. A first ball joint 16 is fixedly connected to the right side of the mounting shaft 14. The inside of the telescopic rod 15 is rotatably connected to the inside of the first ball joint 16. A cavity is opened inside the guide shaft 9. The outside of the mounting shaft 14 is slidably connected to the inside of the cavity. The outside of the S-pole magnet 10 is fixedly connected to the inside of the cavity.

[0027] The auxiliary clamping assembly includes multiple rotating shafts 13, which are rotatably connected inside the guide shaft 9. L-shaped gripping teeth 12 are fixedly connected to the outside of the multiple rotating shafts 13. The outside of the L-shaped gripping teeth 12 is rotatably connected inside the guide shaft 9. The adjacent sides of the multiple L-shaped gripping teeth 12 are in contact with the outside of the mounting shaft 14.

[0028] Reference Figure 1 , Figure 3 , Figure 4 The measuring mechanism includes a second ball joint 17, which allows the rotating rod 18 to rotate at multiple angles, enabling the measuring probe to accurately contact different positions of the brake. The left side of the second ball joint 17 is fixedly connected to the right side of the telescopic rod 15, and the rotating rod 18 is rotatably connected to the outside of the second ball joint 17. A scale block 19 is fixedly connected to the front side of the rotating rod 18. The rotating rod 18 guides the sliding block 22 to the measuring position through the fixedly connected scale block 19. The adjustment groove in the scale block 19 and the guide groove of the sliding block 22 work together to ensure the accuracy of the measurement. Two sliding blocks 22 are rotatably connected inside the scale block 19. A connecting shaft 20 is fixedly connected to the front side of each sliding block 22. A measuring probe 21 is rotatably connected to the outside of the connecting shaft 20. The measuring probe 21 is the part that directly contacts the brake gap, and its front side is a square block, which helps to achieve accurate contact and measurement.

[0029] The scale block 19 has an adjustment groove inside, the sliding block 22 is slidably connected to the outside of the adjustment groove, the sliding block 22 is fixedly connected to both sides of the sliding block 22, the adjustment groove has guide grooves on both sides inside, the guide blocks are slidably connected to the inside of the guide grooves, the scale block 19 has a directional through hole on the front side, the telescopic rod 15 and the rotating rod 18 both have rotating grooves inside, the first ball joint 16 is rotatably connected to the inside of the rotating groove in the telescopic rod 15, the second ball joint 17 is rotatably connected to the inside of the rotating groove in the rotating rod 18, the scale block 19 has a scale ruler on the right side, and the front side of the measuring probe 21 is a square block;

[0030] Two adjusting blocks 4 are rotatably connected to the front side of the housing 1. The adjusting blocks 4 are located on the front side of the housing 1 and are rotatably connected to the front end of the housing 1, so that the brake pads 5 can adjust the braking of the elevator brake wheel 2. The brake pads 5 are fixedly connected to the outside of the two adjusting blocks 4. The brake pads 5 are used to brake the elevator brake wheel 2. The elevator brake wheel 2 is fixedly connected to the front side of the housing 1. A pressure spring 7 is fixedly connected inside the adjusting blocks 4. The pressure spring 7 can provide a reverse force to push the adjusting blocks 4 and thus brake the elevator brake wheel 2. An electromagnet 6 is fixedly connected to the top of the housing 1. The electromagnet 6 is located at the top of the housing 1 and plays a control role.

[0031] Working principle: The housing 1 serves as the mounting frame for the elevator drum brake, providing a stable operating environment for the elevator brake wheel 2 and also providing an environment for the installation of the two adjusting blocks 4. The brake pads 5, which are then fixed to the outside of the adjusting blocks 4, serve as the speed reduction components for the elevator brake wheel 2. When the device is running, the electromagnet 6 generates a recoil force to resist the impact force brought by the pressure spring 7, thereby causing the brake pads 5 to release the restriction on the elevator brake wheel 2.

[0032] When it is necessary to measure the elevator brake wheel 2 and brake skin 5, the mounting shaft 14 is aligned with the guide shaft 9 which is fixed to the far side of the two mounting blocks 3 by the measuring base 8. Then, the mounting shaft 14 is aligned with the sliding groove opened inside the guide shaft 9. As the mounting shaft 14 enters the guide shaft 9, the sliding of the mounting shaft 14 pushes the L-shaped gripper 12 to rotate around the rotating shaft 13, thereby restricting the mounting shaft 14. The S pole magnet 10 fixed inside the guide shaft 9 and the N pole magnet 11 inside the mounting shaft 14 cooperate with each other to provide convenient insertion of the mounting shaft 14 while ensuring the stability of the mounting shaft 14 during the measurement process.

[0033] The first ball joint 16 fixed on the left side of the mounting shaft 14 facilitates the rotation of the telescopic rod 15. At the same time, the rotation groove opened inside the telescopic rod 15 further facilitates the rotation. The telescopic rod 15 can expand the measurement position of the measuring probe 21 by telescopic movement, thereby adapting to different measurement ranges. Meanwhile, the second ball joint 17 fixed on the front side of the telescopic rod 15 cooperates with the rotation groove opened inside the rotating rod 18 to expand the measurement angle of the measuring probe 21.

[0034] During the measurement process, the scale block 19 serves as a measuring scale, and the connecting shaft 20 inside the scale block 19, which slides through the sliding block 22, serves as a support for the measuring probe 21. The two measuring probes 21 cooperate with each other to form a differential double probe linkage structure, thereby eliminating the error caused by the eccentricity of the elevator brake wheel 2.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake, comprising a housing (1), characterized in that: The housing (1) has two mounting blocks (3) fixedly connected inside. The two mounting blocks (3) are fixedly connected to a fixing mechanism on opposite sides. The fixing mechanism is rotatably connected to a telescopic rod (15). The telescopic rod (15) is rotatably connected to a measuring mechanism. The measuring mechanism includes a second ball joint (17), the left side of which is fixedly connected to the right side of the telescopic rod (15). A rotating rod (18) is rotatably connected to the outside of the second ball joint (17). A scale block (19) is fixedly connected to the front side of the rotating rod (18). Two sliding blocks (22) are rotatably connected inside the scale block (19). A connecting shaft (20) is fixedly connected to the front side of each of the two sliding blocks (22). A measuring probe (21) is rotatably connected to the outside of the connecting shaft (20). A scale ruler is provided on the right side of the scale block (19). The front side of the measuring probe (21) is a square block.

2. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 1, characterized in that: The fixing mechanism includes two measuring bases (8), with the adjacent side of the two measuring bases (8) fixedly connected to the distant side of the two mounting blocks (3), and a guide shaft (9) fixedly connected to the distant side of the two measuring bases (8). An auxiliary clamping assembly is rotatably connected inside the guide shaft (9), and an S-pole magnet (10) is fixedly connected inside the guide shaft (9). An mounting shaft (14) is slidably connected inside the guide shaft (9), and an N-pole magnet (11) is fixedly connected to the outside of the mounting shaft (14). The outside of the mounting shaft (14) is slidably connected inside the guide shaft (9). A first ball joint (16) is fixedly connected to the right side of the mounting shaft (14), and the telescopic rod (15) is rotatably connected inside the first ball joint (16).

3. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 2, characterized in that: The auxiliary clamping assembly includes multiple rotating shafts (13), which are rotatably connected inside the guide shaft (9). L-shaped gripping teeth (12) are fixedly connected to the outside of the multiple rotating shafts (13), and the outside of the L-shaped gripping teeth (12) is rotatably connected inside the guide shaft (9). The adjacent side of the multiple L-shaped gripping teeth (12) is in contact with the outside of the mounting shaft (14).

4. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 1, characterized in that: Two adjusting blocks (4) are rotatably connected to the front side of the housing (1). Brake skins (5) are fixedly connected to the outside of the two adjusting blocks (4). An elevator brake wheel (2) is fixedly connected to the front side of the housing (1). A pressure spring (7) is fixedly connected to the inside of the adjusting blocks (4). An electromagnet (6) is fixedly connected to the top of the housing (1).

5. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 2, characterized in that: The scale block (19) has an adjustment groove inside, the sliding block (22) is slidably connected to the outside of the adjustment groove, the sliding block (22) is fixedly connected to both sides of the sliding block (22), the adjustment groove has a guide groove inside both sides, the guide block is slidably connected to the inside of the guide groove, and the scale block (19) has a directional through hole on the front side.

6. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 3, characterized in that: The guide shaft (9) has a cavity inside, the mounting shaft (14) is slidably connected to the inside of the cavity, and the S pole magnet (10) is fixedly connected to the inside of the cavity.

7. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 2, characterized in that: The telescopic rod (15) has a rotating groove inside, and the first ball joint (16) is externally rotatably connected to the inside of the rotating groove inside the telescopic rod (15).

8. The device for measuring the gap between the brake wheel and brake shoe of an elevator drum brake according to claim 2, characterized in that: The rotating rod (18) has a rotating groove inside, and the second ball joint (17) is rotatably connected to the rotating groove inside the rotating rod (18).

Images