Electromagnetic power-off brake friction plate run-out test tool

Abstract

The utility model relates to an electromagnetic power-off brake friction plate run-out test tool which comprises a tool bottom plate, a test board is installed at the upper end of the tool bottom plate, a friction plate carrier is rotatably installed at the upper end of the test board, a limiting boss is arranged in the middle of the upper end of the friction plate carrier, and a first motor for controlling the friction plate carrier to rotate is installed at the bottom of the test board. A vertical plate is vertically installed on one side of the upper end of the tool bottom plate, a lifting seat and a power device for driving the lifting seat to slide up and down are installed on the side, close to the testing table, of the vertical plate, a protective cover is installed at the lower end of the lifting seat, two first infrared distance measuring sensors are installed at the upper end of the lifting seat, and observation holes for detection of the first infrared distance measuring sensors are formed in the lifting seat. The protective cover is provided with an inner cavity, an opening is formed in one side of the inner cavity, and a second infrared distance measuring sensor is installed at the opening of the lower end of the lifting base. According to the utility model, the jumping of the friction plates at different rotating speeds can be detected, so that qualified friction plates can be screened out, and the whole equipment is high in automation degree and very convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic power-off brakes, in particular to a friction plate bounce test tool for electromagnetic power-off brakes. Background Art

[0002] Electromagnetic power-off brakes are often used to stop the rotation of motors. Power-off brakes are achieved by cutting off the power to the electromagnet, causing the armature to lose its electromagnetic force and be squeezed toward the friction plate by the spring, so that the friction plate is held tightly and stops rotating. When the motor rotates at high speed, the axial clearance of the brake friction plate is very small (0-0.1mm), and the vibration of the friction plate will cause serious wear of the material, powder loss, and loud noise.

[0003] Due to uneven mixing of friction plate materials, storage temperature and humidity, etc., it is easy to cause problems such as uneven density and warping of friction plates. The vibration of friction plates at different speeds will have a great impact on the brake. Therefore, it is necessary to design special testing equipment to select qualified friction plates. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a friction plate vibration test tool for an electromagnetic power-off brake, which can detect the vibration of the friction plate at different speeds so as to screen out qualified friction plates. The whole equipment has a high degree of automation and is very convenient to operate.

[0005] The utility model solves the technical problem by adopting the following technical scheme: providing an electromagnetic power-off brake friction plate bounce test tool, comprising a tool base plate, a test bench is installed on the upper end of the tool base plate, a friction plate carrier is rotatably installed on the upper end of the test bench, a limiting boss is provided at the middle of the upper end of the friction plate carrier, a motor for controlling the rotation of the friction plate carrier is installed at the bottom of the test bench, a vertical plate is vertically installed on one side of the upper end of the tool base plate, a lifting seat and a power device for driving the lifting seat to slide up and down are installed on the side of the vertical plate close to the test bench, a protective cover is installed on the lower end of the lifting seat, two infrared ranging sensors are installed on the upper end of the lifting seat, an observation hole for detection by the infrared ranging sensor is opened inside the lifting seat, the protective cover has an inner cavity, one side of the inner cavity is provided with an opening, and the lower end of the lifting seat is located at the opening and an infrared ranging sensor is installed.

[0006] As a supplement to the technical solution described in the utility model, the power device includes a screw rod, two motors and a slide rail. Two vertically arranged slide rails are installed side by side on the side of the vertical plate close to the test bench. A screw rod is rotatably installed on the side wall of the vertical plate between the two slide rails. The screw rod is arranged parallel to the slide rail. Two motors for driving the screw rod to rotate are installed on the upper part of the vertical plate. The lifting seat slides up and down along the screw rod, and a driving block threadedly connected to the screw rod is installed on one side of the lifting seat.

[0007] As a supplement to the technical solution described in the utility model, the limiting boss is a square block structure.

[0008] As a supplement to the technical solution of the utility model, a vertically arranged support column is fixedly installed at the four corners of the lower end of the test bench, and the lower end of each support column is connected and fixed to the tooling bottom plate. The support column and the test bench are fixedly connected by fasteners.

[0009] As a supplement to the technical solution described in the utility model, two proximity switches are arranged in parallel on the side wall of the vertical plate located on the outer side of the slide rail, and a baffle matching the proximity switches is installed on the side of the lifting seat.

[0010] As a supplement to the technical solution described in the utility model, the motor is provided with an encoder for detecting the motor speed.

[0011] Beneficial effects: The utility model relates to an electromagnetic power-off brake friction plate vibration test tool, which can detect the vibration of the friction plate at different speeds so as to screen out qualified friction plates. The whole equipment has a high degree of automation and is very convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the tooling base plate and the test bench described in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the vertical board and the components installed on the vertical board of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the lifting seat and the protective cover described in the utility model.

[0016] Illustration: 1. Tooling base plate, 2. Motor 1, 3. Test bench, 4. Friction plate carrier, 5. Lifting seat, 6. Infrared ranging sensor 1, 7. Protective cover, 8. Vertical plate, 9. Proximity switch, 10. Baffle, 11. Screw rod, 12. Motor 2, 13. Encoder, 14. Support column, 15. Fastener, 16. Slide rail, 17. Observation hole, 18. Limiting boss, 19. Friction plate, 20. Infrared ranging sensor 2, 21. Opening, 22. Inner cavity. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0018] The embodiment of the utility model relates to a jig for testing the friction plate vibration of an electromagnetic power-off brake, such as Figure 1-4 As shown, it includes a tooling base plate 1, a test bench 3 is installed on the upper end of the tooling base plate 1, a friction plate carrier 4 is rotatably installed on the upper end of the test bench 3, a limiting boss 18 is provided in the middle of the upper end of the friction plate carrier 4, and the limiting boss 18 is in a square block structure. A motor 2 for controlling the rotation of the friction plate carrier 4 is installed at the bottom of the test bench 3, a vertical plate 8 is vertically installed on one side of the upper end of the tooling base plate 1, a lifting seat 5 and a power device for driving the lifting seat 5 to slide up and down are installed on the side of the vertical plate 8 close to the test bench 3, a protective cover 7 is installed on the lower end of the lifting seat 5, two infrared ranging sensors 6 are installed on the upper end of the lifting seat 5, an observation hole 17 for detection by the infrared ranging sensor 6 is opened inside the lifting seat 5, the protective cover 7 has an inner cavity 22, an opening 21 is provided on one side of the inner cavity 22, and the inner cavity 22 is in a circular groove structure, and an infrared ranging sensor 20 is installed at the lower end of the lifting seat 5 at the opening 21.

[0019] The power device includes a screw 11, a second motor 12 and a slide rail 16. Two vertically arranged slide rails 16 are installed side by side on the side of the vertical plate 8 close to the test bench 3. The side wall of the vertical plate 8 is located between the two slide rails 16 and a screw 11 is rotatably installed. The screw 11 is arranged parallel to the slide rail 16. A second motor 12 for driving the screw 11 to rotate is installed on the upper part of the vertical plate 8. The lifting seat 5 slides up and down along the screw 11. A driving block threadedly connected to the screw 11 is installed on one side of the lifting seat 5; the second motor 12 controls the rotation of the screw 11, and the screw 11 is threadedly connected to the driving block. When the screw 11 rotates, it will drive the lifting seat 5 to slide up and down along the screw 11.

[0020] A vertically arranged support column 14 is fixedly installed at the four corners of the lower end of the test bench 3, and the lower end of each support column 14 is connected and fixed to the tooling base plate 1. By setting the support columns 14, the test bench 3 is raised as a whole to reduce interference between components; the support columns 14 and the test bench 3 are fixedly connected by fasteners 15; the support columns 14 and the tooling base plate 1 are fixed by welding.

[0021] The side wall of the vertical plate 8 is located on the outside of the slide rail 16 and has two proximity switches 9 arranged in parallel. A baffle 10 that cooperates with the proximity switch 9 is installed on the side of the lifting seat 5; a proximity switch refers to a switch that can send an "action" signal when an object approaches it to a set distance, and it does not need to be in direct contact with the object; the baffle 10 and the two positions of the lifting seat 5 up and down are controlled by two proximity switches 9. When the upper proximity switch 9 senses the baffle 10, the motor 2 12 stops rotating, the lifting seat 5 remains stationary, and the protective cover 7 is lifted. At this time, the lifting seat 5 is in the waiting working position; when the lower proximity switch 9 senses the baffle 10, the motor 2 12 stops rotating, the lifting seat 5 remains stationary, and the protective cover 7 covers the limit boss 18. At this time, the lifting seat 5 is in the detection working position; the proximity switch 9 can be purchased directly on the market, and position limitation by proximity switch 9 is a conventional technical means.

[0022] The motor 2 is provided with an encoder 13 for detecting the motor speed.

[0023] During the inspection, the friction plate 19 is first installed on the friction plate carrier 4, and the friction plate 19 is supported by the upper end surface of the friction plate carrier 4. The limiting boss 18 is interlocked with the inner hole of the friction plate 19 to achieve the limiting of the friction plate 19, and the motor 2 12 is started. The motor 2 12 controls the lifting seat 5 to move downward until the protective cover 7 covers the limiting boss 18 and the friction plate 19. The protective cover 7 can prevent the friction plate 19 from flying out during high-speed rotation. Then the motor 12 is started. The motor 12 controls the friction carrier 4 and the friction plate 19 to rotate at high speed. Two infrared ranging sensors 16 detect the axial position change of the friction plate 19 (that is, the position change of the friction plate 19 floating up and down during high-speed rotation), the infrared ranging sensor 20 detects the radial change of the friction plate 9, and the encoder 13 detects the rotation speed of the motor 2. The data detected by the infrared ranging sensor 16, the infrared ranging sensor 20 and the encoder 13 are transmitted to the computer or the device display screen. If the data meets the requirements, the product is qualified, otherwise, the product is unqualified. After the detection is completed, the motor 2 12 controls the lifting seat 5 to move upward, so that the friction plate 19 can be taken out.

[0024] The speed of motor 1 2 can be adjusted as required, and the starting operation of motor 1 2, motor 2 12 and other components can be controlled by a computer or a device display screen. This is a conventional technical means, so it will not be elaborated.

[0025] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0028] The above is a detailed introduction to the electromagnetic power-off brake friction pad bounce test tool provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A jig for testing the friction plate vibration of an electromagnetic power-off brake, comprising a jig bottom plate (1), characterized in that: A test bench (3) is installed at the upper end of the tooling base plate (1), a friction plate carrier (4) is rotatably installed at the upper end of the test bench (3), a limiting boss (18) is provided at the middle of the upper end of the friction plate carrier (4), a motor (2) for controlling the rotation of the friction plate carrier (4) is installed at the bottom of the test bench (3), a vertical plate (8) is vertically installed at one side of the upper end of the tooling base plate (1), and a lifting seat (5) and a driving lifting seat (5) are installed on the side of the vertical plate (8) close to the test bench (3). A power device that slides up and down, a protective cover (7) is installed at the lower end of the lifting seat (5), two infrared distance measuring sensors (6) are installed at the upper end of the lifting seat (5), an observation hole (17) for detection by the infrared distance measuring sensor (6) is opened inside the lifting seat (5), the protective cover (7) has an inner cavity (22), one side of the inner cavity (22) is provided with an opening (21), and the lower end of the lifting seat (5) is located at the opening (21) and is installed with an infrared distance measuring sensor (20).

2. The electromagnetic power-off brake friction plate vibration test tool according to claim 1, characterized in that: The power device comprises a screw (11), a second motor (12) and a slide rail (16); two vertically arranged slide rails (16) are installed side by side on the side of the vertical plate (8) close to the test bench (3); a screw (11) is rotatably installed on the side wall of the vertical plate (8) between the two slide rails (16); the screw (11) and the slide rail (16) are arranged in parallel; a second motor (12) for driving the screw (11) to rotate is installed on the upper part of the vertical plate (8); the lifting seat (5) slides up and down along the screw (11); and a driving block threadedly connected to the screw (11) is installed on one side of the lifting seat (5).

3. The electromagnetic power-off brake friction plate vibration test tool according to claim 1, characterized in that: The limiting boss (18) is in a square block structure.

4. The electromagnetic power-off brake friction plate vibration test tool according to claim 1, characterized in that: A vertically arranged support column (14) is fixedly installed at each of the four corners of the lower end of the test bench (3), and the lower end of each support column (14) is connected and fixed to the tooling base plate (1), and the support column (14) and the test bench (3) are fixedly connected by fasteners (15).

5. The electromagnetic power-off brake friction plate vibration test tool according to claim 1, characterized in that: The side wall of the vertical plate (8) is located outside the slide rail (16) and has two proximity switches (9) arranged in parallel. The side of the lifting seat (5) is equipped with a baffle (10) that cooperates with the proximity switches (9).

6. The electromagnetic power-off brake friction plate vibration test tool according to claim 1, characterized in that: The motor 1 (2) is provided with an encoder (13) for detecting the motor rotation speed.

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