Elevator band-type brake service life measuring device

Abstract

The utility model relates to the technical field of elevator testing, and provides an elevator band-type brake service life testing device which comprises a testboard and two first guide rails which are symmetrically and fixedly connected to the top of the testboard. According to the utility model, the rocking handle is rotated by hand, and under the cooperation of the gear transmission group, the transmission shaft can be driven to rotate, the screw rod can be synchronously driven to rotate, the movable frame can move towards one side of the movable plate along the outer surface of the screw rod, the clamping plate I is synchronously driven to extrude the brake shoe, and the movable plate is pushed to slide towards one side of the guide rail II; the movable plate is limited through the second sliding block, at the moment, clamping of the first clamping plate on the brake shoe can enter microspur movement, when the fixed plate cannot be rotated completely, the distance between the displacement detection holes is detected through the displacement sensor, and therefore the thickness of the brake shoe can be accurately measured. Therefore, misjudgment caused by wrong reading is avoided, and elevator safety accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the field of elevator testing technology, and in particular to an elevator brake life testing device. Background Technology

[0002] Elevator brakes, as a type of mechanical braking device, are primarily used to stop rotating motion and play a crucial role in elevator systems. They achieve their braking effect by tightly contacting brake pads and moving wheels (such as traction sheaves), ensuring the elevator can safely stop in both normal operation and emergency situations.

[0003] In existing technology, the brake shoes of elevator brakes are prone to wear during long-term use. The wear of the brake shoes will affect the braking effect of the elevator brake. Therefore, it is necessary to test the thickness of the brake shoes. Currently, the thickness is measured manually with a measuring ruler. Since the thickness measurement of the brake shoes needs to be accurate to the micrometer, there may be reading errors, which may lead to misjudgment and potentially cause elevator safety accidents. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the existing technology, the brake shoes of elevator brakes are prone to wear during long-term use, which affects the braking effect of the elevator brake. Therefore, it is necessary to test the thickness of the brake shoes. Currently, the thickness is measured manually with a measuring ruler. Since the thickness measurement of the brake shoes needs to be accurate to the micrometer, there may be reading errors, which may lead to misjudgment and potentially cause safety accidents.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an elevator brake life testing device, comprising: a test bench, and further comprising:

[0006] Two guide rails are symmetrically and fixedly connected to the top of the test bench. A movable frame is slidably connected to the outer surfaces of the two guide rails. A clamping plate is fixedly connected to one side of the movable frame. A fixed plate is fixedly connected to the top of the test bench. A transmission box is fixedly connected to one side of the fixed plate. A gear transmission assembly is installed inside the transmission box. A rocker arm is rotatably connected to the top of the transmission box, and the rocker arm cooperates with the gear transmission assembly. A transmission shaft is rotatably connected to the center of the fixed plate. One end of the transmission shaft extends into the interior of the transmission box and cooperates with the gear transmission assembly. A lead screw is threaded into the movable frame, and the lead screw is fixedly connected to the transmission shaft. Two displacement sensors are symmetrically fixedly connected to one side of the movable frame. A movable plate is slidably connected to the outer surfaces of the two guide rails. A clamping plate is fixedly connected to one side of the movable plate.

[0007] Preferably, two displacement detection holes are symmetrically opened on one side of the movable plate, the displacement sensor corresponds to the displacement detection hole, the first clamp is set to an outer arc shape, the second clamp is set to an inner arc shape, and the first clamp and the second clamp are matched.

[0008] Preferably, two movable blocks are symmetrically fixedly connected to the bottom of the movable frame, an E-shaped block is fixedly connected to the side of the movable plate near the bottom, and two guide rods are symmetrically fixedly connected to one side of the E-shaped block, with the guide rods slidably connected to the movable blocks.

[0009] Preferably, the outer surface of the guide rod is provided with a spring, which is fixedly connected to the movable block and the E-shaped block respectively, and the inner wall of the E-shaped block is rotatably connected to two rollers through a shaft.

[0010] Preferably, a second guide rail is fixedly connected to the top of the test platform near the movable plate, and a second slider is slidably connected to the outer surface of the second guide rail. The distance between the top of the second slider and the top of the test platform is greater than the distance between the bottom of the movable plate and the top of the test platform.

[0011] Preferably, two positioning rods are symmetrically fixedly connected to one side of the movable frame, and two positioning holes are symmetrically opened on one side of the movable plate, with the positioning rods corresponding to the positioning holes.

[0012] Preferably, a door is movably connected to one side of the test bench via a hinge, and a placement frame is fixedly connected to the side of the test bench near the top.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model allows for manual rotation of the rocker arm, which, in conjunction with the gear transmission assembly, drives the transmission shaft to rotate, simultaneously rotating the lead screw. Then, under the action of the threaded engagement between the lead screw and the movable frame, and with the guidance of a pair of movable frames on the guide rail, the movable frame can move along the outer surface of the lead screw towards the movable plate. Simultaneously, this causes the pair of brake shoes on the clamping plate to press against each other, pushing the movable plate to slide towards the guide rail. The movable plate is then limited by a slider. At this point, the clamping of the pair of brake shoes on the clamping plate enters a micro-movement. When the fixed plate can no longer be rotated, a displacement sensor detects the distance between the displacement detection holes. This allows for precise measurement of the brake shoe thickness, avoiding misjudgments due to incorrect readings and thus preventing elevator safety accidents.

[0015] 2. In this utility model, by pushing the movable plate to one side, it slides along the outer surface of guide rail one to guide rail two, simultaneously driving the E-block and guide rod to move to one side, simultaneously stretching the spring, causing the roller to roll, and then placing the brake shoe between clamping plate one and clamping plate two, with the inner arc surface of the brake shoe facing clamping plate one and the outer arc surface facing clamping plate two. Then, the movable plate is released, and under the restoring force of the spring, the movable plate moves to one side of the movable frame, so that clamping plate two presses the brake shoe against the top of clamping plate one. This facilitates the clamping and fixing of the brake shoe, thereby facilitating the subsequent accurate measurement of the brake shoe thickness. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an elevator brake life measuring device provided by this utility model;

[0017] Figure 2 A side view of the life testing device for elevator brake provided by this utility model;

[0018] Figure 3 A front cross-sectional structural diagram of an elevator brake life measuring device provided by this utility model;

[0019] Figure 4 A side cross-sectional structural diagram of an elevator brake life measuring device provided by this utility model.

[0020] Legend:

[0021] 1. Test bench; 101. Box door; 102. Placement frame; 2. Guide rail one; 201. Movable frame; 202. Clamping plate one; 203. Displacement sensor; 204. Positioning ball rod; 3. Guide rail two; 301. Slider two; 302. Movable plate; 303. Positioning hole; 304. Clamping plate two; 305. Displacement detection hole; 4. Fixed plate; 401. Rocker arm; 402. Transmission box; 403. Lead screw; 404. Transmission shaft; 5. Movable block; 501. Guide rod; 502. Spring; 503. E-block; 504. Roller. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Examples, such as Figure 1-4 As shown, this utility model provides a device for testing the lifespan of an elevator brake, including: a test bench 1, and two guide rails 2 symmetrically and fixedly connected to the top of the test bench 1. A movable frame 201 is slidably connected to the outer surface of the two guide rails 2. A clamping plate 202 is fixedly connected to one side of the movable frame 201. A fixing plate 4 is fixedly connected to the top of the test bench 1. A transmission box 402 is fixedly connected to one side of the fixing plate 4. A gear transmission assembly is installed inside the transmission box 402. A rocker arm 401 is rotatably connected to the top of the transmission box 402. The 401 plate is engaged with the gear transmission assembly. The center of the fixed plate 4 is rotatably connected to the transmission shaft 404. One end of the transmission shaft 404 extends into the interior of the transmission box 402. The transmission shaft 404 is engaged with the gear transmission assembly. The movable frame 201 is internally threaded with a lead screw 403. The lead screw 403 is fixedly connected to the transmission shaft 404. Two displacement sensors 203 are symmetrically fixedly connected to one side of the movable frame 201. The outer surfaces of the two guide rails 2 are slidably connected to the movable plate 302. The side of the movable plate 302 is fixedly connected to the clamping plate 304.

[0025] Furthermore, such as Figure 1-4 As shown, two displacement detection holes 305 are symmetrically opened on one side of the movable plate 302. The displacement sensor 203 corresponds to the displacement detection hole 305. The clamping plate 1 202 is set to an outer arc shape, and the clamping plate 2 304 is set to an inner arc shape. The clamping plate 1 202 and the clamping plate 2 304 are matched. The setting of the displacement detection hole 305 makes it convenient for the displacement sensor 203 to detect the displacement. Furthermore, the setting of the shape of the clamping plate 1 202 and the displacement sensor 203 makes it convenient to clamp and fix the brake shoe.

[0026] Furthermore, such as Figure 1-4 As shown, two movable blocks 5 are symmetrically fixedly connected to the bottom of the movable frame 201. An E-shaped block 503 is fixedly connected to the side of the movable plate 302 near the bottom. Two guide rods 501 are symmetrically fixedly connected to one side of the E-shaped block 503. The guide rods 501 are slidably connected to the movable blocks 5. With the above arrangement, when the movable plate 302 moves to one side of the movable frame 201, the guide rods 501 can slide at the center of the movable block 5.

[0027] Furthermore, such as Figure 1-4 As shown, a spring 502 is provided on the outer surface of the guide rod 501. The spring 502 is fixedly connected to the movable block 5 and the E-shaped block 503 respectively. The inner wall of the E-shaped block 503 is rotatably connected to two rollers 504 through a shaft. Under the reset force of the spring 502, the movable plate 302 can be moved to one side of the movable frame 201. The rollers 504 provide a certain supporting and guiding function.

[0028] Furthermore, such as Figure 1-4As shown, a guide rail 2 3 is fixedly connected to the top of the test platform 1 near the movable plate 302. A slider 2 301 is slidably connected to the outer surface of the guide rail 2 3. The distance between the top of the slider 2 301 and the top of the test platform 1 is greater than the distance between the bottom of the movable plate 302 and the top of the test platform 1. By sliding the slider 2 301 to the middle position of the guide rail 2 3, the movable plate 302 can be limited. When the slider 2 301 is slid to both sides, the movable plate 302 can be removed from the top of the guide rail 2 2.

[0029] Furthermore, such as Figure 1-4 As shown, two positioning ball rods 204 are symmetrically fixedly connected to one side of the movable frame 201, and two positioning holes 303 are symmetrically opened on one side of the movable plate 302. The positioning ball rods 204 correspond to the positioning holes 303. With the above arrangement, when the movable plate 302 moves towards the movable frame 201, the positioning ball rods 204 can be inserted into the interior of the positioning holes 303 to achieve a certain positioning effect.

[0030] Furthermore, such as Figure 1-4 As shown, a door 101 is movably connected to one side of the test bench 1 via a hinge, and a placement frame 102 is fixedly connected to the side of the test bench 1 near the top. The placement frame 102 facilitates the placement of necessary tools or items.

[0031] Working principle: During use, clamping plate 202 and positioning ball rod 204 are not in their initial state. In the initial state, clamping plate 202 and clamping plate 304 are in close contact. At this time, the displacement sensor 203 detects zero distance from the displacement detection hole 305. When it is necessary to detect the thickness of the brake shoe, the movable plate 302 is pushed to one side, causing it to slide along the outer surface of guide rail 2 to guide rail 3. Simultaneously, the E-block 503 and guide rod 501 are moved to one side, and the spring 502 is stretched, causing the roller 50... 4. Roll the brake shoe and place it between clamping plate 202 and clamping plate 304, with the inner arc surface of the brake shoe facing clamping plate 202 and the outer arc surface facing clamping plate 304. Then release the movable plate 302, allowing it to move towards the movable frame 201 under the restoring force of spring 502. This causes clamping plate 304 to press the brake shoe against clamping plate 202, facilitating the clamping and fixing of the brake shoe and enabling accurate measurement of its thickness. At this time, displacement sensor 203 detects the displacement. By measuring the distance between the measuring holes 305, the approximate thickness of the brake shoe can be determined, facilitating comparison with precise data. Then, by manually rotating the rocker arm 401, and with the assistance of the gear transmission assembly, the drive shaft 404 rotates, synchronously driving the lead screw 403. Subsequently, under the action of the threaded engagement between the lead screw 403 and the movable frame 201, and with the limiting and guiding action of the guide rail 2 on the movable frame 201, the movable frame 201 can move along the outer surface of the lead screw 403 towards the movable plate 302, synchronously driving the clamp... Plate 1 202 presses against the brake shoe, pushing the movable plate 302 to slide to one side of guide rail 2 3. The movable plate 302 is limited by the slider 2 301. At this time, the clamping plate 1 202 can clamp the brake shoe into micro-movement. When the fixed plate 4 can no longer be rotated, the displacement sensor 203 detects the distance between the displacement detection holes 305. In this way, the thickness of the brake shoe can be accurately measured, thereby avoiding misjudgment due to reading errors, and thus avoiding elevator safety accidents.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A device for measuring the lifespan of an elevator brake, comprising: The test bench (1) is characterized in that it further includes: Two guide rails (2) are symmetrically fixedly connected to the top of the test bench (1). A movable frame (201) is slidably connected to the outer surface of the two guide rails (2). A clamping plate (202) is fixedly connected to one side of the movable frame (201). A fixing plate (4) is fixedly connected to the top of the test bench (1). A transmission box (402) is fixedly connected to one side of the fixing plate (4). A gear transmission assembly is installed inside the transmission box (402). A rocker arm (401) is rotatably connected to the top of the transmission box (402). The rocker arm (401) cooperates with the gear transmission assembly. The fixing plate (202) is rotatably connected to the top of the transmission box (402). A drive shaft (404) is rotatably connected at the center of 4), one end of which extends into the interior of the transmission box (402). The drive shaft (404) is engaged with a gear transmission group. A lead screw (403) is threadedly connected to the interior of the movable frame (201). The lead screw (403) is fixedly connected to the drive shaft (404). Two displacement sensors (203) are symmetrically fixedly connected to one side of the movable frame (201). Movable plates (302) are slidably connected to the outer surfaces of the two guide rails (2). A clamping plate (304) is fixedly connected to one side of the movable plate (302).

2. The elevator brake life testing device according to claim 1, characterized in that: Two displacement detection holes (305) are symmetrically opened on one side of the movable plate (302). The displacement sensor (203) corresponds to the displacement detection hole (305). The first clamping plate (202) is set to an outer arc shape, and the second clamping plate (304) is set to an inner arc shape. The first clamping plate (202) and the second clamping plate (304) are matched.

3. The elevator brake life testing device according to claim 2, characterized in that: The bottom of the movable frame (201) is symmetrically fixedly connected to two movable blocks (5), and the movable plate (302) is fixedly connected to an E-shaped block (503) on one side near the bottom. Two guide rods (501) are symmetrically fixedly connected to one side of the E-shaped block (503), and the guide rods (501) are slidably connected to the movable blocks (5).

4. The elevator brake life testing device according to claim 3, characterized in that: A spring (502) is provided on the outer surface of the guide rod (501). The spring (502) is fixedly connected to the movable block (5) and the E-shaped block (503) respectively. The inner wall of the E-shaped block (503) is rotatably connected to two rollers (504) through a shaft.

5. The elevator brake life testing device according to claim 2, characterized in that: The test platform (1) is fixedly connected to the top of the movable plate (302) with a guide rail (3), and a slider (301) is slidably connected to the outer surface of the guide rail (3). The distance between the top of the slider (301) and the top of the test platform (1) is greater than the distance between the bottom of the movable plate (302) and the top of the test platform (1).

6. The elevator brake life testing device according to claim 5, characterized in that: Two positioning rods (204) are symmetrically fixedly connected to one side of the movable frame (201), and two positioning holes (303) are symmetrically opened on one side of the movable plate (302), with the positioning rods (204) corresponding to the positioning holes (303).

7. The elevator brake life testing device according to claim 5, characterized in that: A door (101) is movably connected to one side of the test bench (1) via a hinge, and a placement frame (102) is fixedly connected to the side of the test bench (1) near the top.

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