Brake shoe wear detection device

Abstract

The utility model discloses a brake shoe wear detection device, and relates to the brake detection technology field, the brake shoe wear detection device comprises a box body and a bidirectional screw rod rotatably connected in the box body, the external circular surface of the bidirectional screw rod is in threaded connection with a nut seat, and the upper surface of the nut seat is fixedly connected with a fixed plate. And a middle plate is fixedly connected to the middle position of the upper surface of the box body. Compared with an existing common brake shoe wear detection device, when the brake shoe wear detection device is used for measurement, if the wear degree of a wear surface is uniform, whether the other side of the wear surface is tightly attached to the shoe or not can be observed after the attaching plate on one side is tightly attached to the shoe on the same side, if yes, the normal wear amount of the wear surface can be measured by comparing scales, and if not, the normal wear amount of the wear surface can be measured. The problem that the two brake shoes are abraded unequally is solved, if the abrasion faces of the brake shoes are abraded unevenly, the uneven difference value can be measured by observing the scales pointed by the upper end and the lower end of the attaching plate, and the brake shoes can be measured under various conditions through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of brake detection, in particular to a brake shoe wear detection device. Background Art

[0002] As an important part of the car, the brake can slow down or even stop the car in time according to the driver's wishes, which plays a vital role in the driving safety of the car. As the core part of the brake, the brake shoe is also a vulnerable part. It must be regularly inspected or maintained and replaced according to its wear degree. Otherwise, the braking torque will decrease due to severe wear of the brake shoe, and in extreme cases, it will cause brake failure, causing great safety hazards to passengers and pedestrians.

[0003] Existing brake shoe inspections are mostly performed using visual inspection or length measurement tools, which makes it difficult to accurately measure the problem of unequal wear of brake shoes on the same wheel; it is difficult to accurately measure whether the wear degree of the wear surface is uniform; and it is also difficult to measure the problem of uneven differences.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a brake shoe wear detection device is proposed. Utility Model Content

[0005] The utility model aims to provide a brake shoe wear detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brake shoe wear detection device, comprising a box body and a bidirectional screw rod rotatably connected to the inside of the box body, the outer cylindrical surface of the bidirectional screw rod is threadedly connected to a nut seat, the upper surface of the nut seat is fixedly connected to a fixing plate, a middle plate is fixedly connected to the middle position of the upper surface of the box body, a number of pads are fixedly connected to the outer surfaces of both sides of the middle plate, and a uniformity detection mechanism is provided on the outer surface of the fixing plate.

[0007] Preferably, the uniformity detection mechanism includes an axle seat fixedly connected to the outer surface of the fixed plate, the inner surface of the axle seat is rotatably connected to a bonding plate, a first screw is provided through the upper end of the axle seat, a return spring is provided on the outer surface of the bonding plate, and a replacement mechanism is provided on the outside of the return spring.

[0008] Preferably, the replacement mechanism includes a disassembly plate fixedly connected to one end of the reset spring, a fixing screw hole is provided on the outer surface of one side of the bonding plate, the outer surface of the disassembly plate extends to the internal thread of the fixing screw hole and is connected to a second screw, and a protective sleeve is installed on the upper end of the shaft seat.

[0009] Preferably, an electric telescopic rod is fixedly connected to the inner top of the box body, a base plate is fixedly connected to the lower end of the electric telescopic rod, a motor is fixedly connected to the upper surface of the base plate, and a brush disc is fixedly connected to the output end of the motor.

[0010] Preferably, a cleaning nozzle is installed on the inner surface of the box body, and a water flow groove is opened on the inner bottom of the box body.

[0011] Preferably, a bottom filter is provided above the water flow trough, and the upper surface of the bottom filter is connected to a limited position mesh plate by screws.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can fit the mounting surfaces of two brake shoes of the same wheel on the middle plate with the wear surfaces facing the fixed plates on both sides by means of the box body, the bidirectional screw rod, the nut seat, the fixing plate, the middle plate, the pad, the uniformity detection mechanism, the shaft seat, the fitting plate, the first screw rod, the reset spring, the replacement mechanism, the disassembly plate, the fixing screw hole, the second screw rod and the protective cover. The hand wheel is shaken to rotate the bidirectional screw rod to drive the two nut seats to approach each other, so that the fitting plate gradually fits the wear surface of the brake shoe. If the wear surface is worn to a certain extent, the fitting plate is loose. The degree of uniformity can be observed after one side of the laminating plate is pressed against the shoe on the same side. If so, the normal wear amount of the wear surface can be measured by comparing the scales. If not, the two brake shoes have unequal wear. If the wear surface of the brake shoe is unevenly worn, the laminating plate will rotate on the axle seat during the pressing process, pressing the reset spring. After pressing, observe the scales indicated by the upper and lower ends of the laminating plate to measure the uneven difference. This design can measure the brake shoe in various situations.

[0014] 2. The utility model is equipped with an electric telescopic rod, a base plate, a motor, a brush plate, a cleaning nozzle, a water flow trough, a bottom filter, and a limiting mesh plate. Before the measurement, the box door is opened first, the brake shoe is placed in the limiting mesh plate, the electric telescopic rod is controlled to be extended and retracted, and the two motors drive the brush plate to clean the surface of the brake shoe under the joint action of the cleaning nozzle. This design can clean the surface of the brake shoe before detection to prevent impurities or iron filings from affecting the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the disassembled structure of the laminating plate 72 of the utility model;

[0017] Figure 3 For this utility model Figure 1 A schematic diagram of a front cross-sectional structure;

[0018] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure of A.

[0019] In the figure: 1. Box body; 2. Bidirectional screw rod; 3. Nut seat; 4. Fixed plate; 5. Middle plate; 6. Spacer; 7. Uniformity detection mechanism; 71. Shaft seat; 72. Laminating plate; 73. First screw rod; 74. Reset spring; 75. Replacement mechanism; 751. Disassembly plate; 752. Fixed screw hole; 753. Second screw rod; 754. Protective cover; 8. Electric telescopic rod; 9. Base plate; 10. Motor; 11. Brush plate; 12. Cleaning nozzle; 13. Water flow trough; 14. Bottom filter; 15. Limiting mesh plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 4As shown, a brake shoe wear detection device comprises a box body 1 and a bidirectional screw rod 2 rotatably connected to the inside of the box body 1, the outer cylindrical surface of the bidirectional screw rod 2 is threadedly connected with a nut seat 3, the upper surface of the nut seat 3 is fixedly connected with a fixing plate 4, a middle plate 5 is fixedly connected to the middle position of the upper surface of the box body 1, and a plurality of pads 6 are fixedly connected to the outer surfaces of both sides of the middle plate 5, and a uniformity detection mechanism 7 is arranged on the outer surface of the fixing plate 4, the uniformity detection mechanism 7 comprises an axle seat 71 fixedly connected to the outer surface of the fixing plate 4, the inner surface of the axle seat 71 is rotatably connected with a bonding plate 72, the upper end of the axle seat 71 is provided with a first screw rod 73 running through the inside, the outer surface of the bonding plate 72 is provided with a reset spring 74, and a replacement mechanism 75 is arranged on the outside of the reset spring 74, and the replacement mechanism 75 comprises a disassembly plate 751 fixedly connected to one end of the reset spring 74, and a fixing screw hole 752 is opened on the outer surface of one side of the bonding plate 72, and the disassembly plate 751 is fixedly connected to one end of the reset spring 74. The outer surface of 751 extends to the internal thread of the fixing screw hole 752 and is connected to the second screw 753. The upper end of the shaft seat 71 is provided with a protective sleeve 754, which can make the mounting surfaces of the brake shoes of the same wheel fit on the middle plate 5 with the wear surfaces facing the directions of the fixing plates 4 on both sides. The hand wheel is shaken to rotate the bidirectional screw rod 2, driving the two nut seats 3 to approach each other, so that the bonding plate 72 gradually fits the wear surfaces of the brake shoes. If the wear degree of the wear surface is uniform, after the bonding plate 72 on one side is close to the shoe on the same side, observe whether the bonding plate 72 on the other side is close to the shoe. If it is, the normal wear amount of the wear surface can be measured by comparing the scales. If it is not, the two brake shoes have the problem of unequal wear. If the wear surface of the brake shoe is unevenly worn, the bonding plate 72 will rotate on the shaft seat 71 during the bonding process, pressing the reset spring 74. After it is close, observe the scales indicated by the upper and lower ends of the bonding plate 72 to measure the uneven difference.

[0022] Furthermore, contrast scale lines are provided on both the front and rear sides of the upper surface of the box body 1 .

[0023] Furthermore, one end of the bidirectional screw rod 2 is fixedly connected to a hand wheel, so that the operator can turn the bidirectional screw rod 2 according to the actual fit degree.

[0024] Furthermore, there are two return springs 74 symmetrically distributed on one outer surface of the bonding plate 72 .

[0025] like Figure 3 As shown, an electric telescopic rod 8 is fixedly connected to the inner top of the box body 1, a base plate 9 is fixedly connected to the lower end of the electric telescopic rod 8, a motor 10 is fixedly connected to the upper surface of the base plate 9, and a brush plate 11 is fixedly connected to the output end of the motor 10.

[0026] Furthermore, a cleaning nozzle 12 is installed on the inner surface of the box 1, and a water flow groove 13 is opened at the inner bottom of the box 1. The water flow groove 13 is connected to the outlet pipe on the right side of the outer surface of the box 1. The sewage after cleaning enters the water flow groove 13 and the outlet pipe for cleaning and discharge.

[0027] Furthermore, a bottom filter screen 14 is provided above the water flow channel 13, and the upper surface of the bottom filter screen 14 is connected to a limiting mesh plate 15 by screws. The limiting mesh plate 15 connected by screws can be disassembled by unscrewing the screws, so that disassembly and replacement are convenient.

[0028] Working principle: When using the brake shoe wear detection device, first, the mounting surfaces of the two brake shoes of the same wheel can be attached to the middle plate 5, with the worn surfaces facing the direction of the fixed plates 4 on both sides, and the hand wheel can be shaken to rotate the bidirectional screw rod 2 to drive the two nut seats 3 to approach each other, so that the bonding plate 72 gradually fits the worn surface of the brake shoe. If the wear degree of the wear surface is uniform, after the bonding plate 72 on one side is tightly against the shoe on the same side, observe whether the bonding plate 72 on the other side is tightly against the shoe. If it is tightly, the normal wear amount of the wear surface can be measured by comparing the scales. If it is not tightly, the two brake shoes have unequal wear. If the brake shoes The wear surface of the plate is unevenly worn. The bonding plate 72 will rotate on the shaft seat 71 during the process of adhesion, pressing the reset spring 74. After adhesion, observe the scales indicated by the upper and lower ends of the bonding plate 72 to measure the uneven difference. Clean the nozzle 12, water flow groove 13, bottom filter 14, and limit mesh disk 15. Before measurement, open the door of the box body 1 first, place the brake shoe in the limit mesh disk 15, control the electric telescopic rod 8 to extend and retract, and the two motors 10 drive the brush disk 11 to clean the surface of the brake shoe under the joint action of the cleaning nozzle 12. This is the working principle of the brake shoe wear detection device.

Claims

1. A brake shoe wear detection device, comprising a housing (1) and a bidirectional screw (2) rotatably connected to the interior of the housing (1), characterized in that: The outer cylindrical surface of the bidirectional screw rod (2) is threadedly connected to a nut seat (3), the upper surface of the nut seat (3) is fixedly connected to a fixing plate (4), a middle plate (5) is fixedly connected to the middle position of the upper surface of the box body (1), a plurality of cushion blocks (6) are fixedly connected to the outer surfaces of both sides of the middle plate (5), and a uniformity detection mechanism (7) is provided on the outer surface of the fixing plate (4).

2. A brake shoe wear detection device according to claim 1, characterized in that: The uniformity detection mechanism (7) comprises an axle seat (71) fixedly connected to the outer surface of the fixed plate (4); the inner surface of the axle seat (71) is rotatably connected to a bonding plate (72); a first screw (73) is provided through the upper end of the axle seat (71); a return spring (74) is provided on the outer surface of the bonding plate (72); and a replacement mechanism (75) is provided outside the return spring (74).

3. A brake shoe wear detection device according to claim 2, characterized in that: The replacement mechanism (75) comprises a disassembly plate (751) fixedly connected to one end of a return spring (74); a fixing screw hole (752) is provided on an outer surface of one side of the bonding plate (72); a second screw rod (753) is connected to the inner thread of the outer surface of the disassembly plate (751) extending to the fixing screw hole (752); and a protective sleeve (754) is installed on the upper end of the shaft seat (71).

4. A brake shoe wear detection device according to claim 1, characterized in that: An electric telescopic rod (8) is fixedly connected to the inner top of the box body (1), a base plate (9) is fixedly connected to the lower end of the electric telescopic rod (8), a motor (10) is fixedly connected to the upper surface of the base plate (9), and a brush plate (11) is fixedly connected to the output end of the motor (10).

5. A brake shoe wear detection device according to claim 1, characterized in that: A cleaning nozzle (12) is installed on the inner surface of the box body (1), and a water flow groove (13) is provided on the inner bottom of the box body (1).

6. A brake shoe wear detection device according to claim 5, characterized in that: A bottom filter screen (14) is arranged above the water flow channel (13), and the upper surface of the bottom filter screen (14) is connected to a limited position mesh plate (15) via screws.

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