Brake device

Abstract

The utility model discloses a braking device, which belongs to the technical field of braking and comprises a fixing plate and a plurality of connecting bolts, a second friction plate and a first friction plate are slidably mounted on the connecting bolts in a penetrating manner, and a spring is arranged between the first friction plate and the second friction plate; a through hole is formed in the fixing plate; a fixed cam is positioned on the outer side of the fixed plate, a rotating cam is rotationally mounted on the fixed cam through a connecting shaft, the opposite surfaces of the fixed cam and the rotating cam are matched cam surfaces, and a wire pulling plate is connected to the rotating cam. During braking, the pull wire plate is pulled through the pull wire to drive the rotary cam to rotate, the rotary cam can axially move outwards, the brake disc is tightly held through the first friction plate and the second friction plate, and braking is achieved. The distance between the two friction plates is flexibly adjusted by rotating the connecting bolts, and the reliable braking performance is guaranteed; the two friction plates can be conveniently replaced by detaching the connecting bolts, the whole parking mechanism does not need to be integrally replaced, and the cost is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of braking, in particular to a braking device. Background Art

[0002] Braking, also known as braking, refers to the action of stopping or slowing down a running locomotive, vehicle, other means of transport or machinery. The general principle of braking is to fix a wheel or disc on the high-speed shaft of the machine, install a brake shoe, belt or disc that is suitable for it on the machine base, and generate a braking torque under the action of external force. The brake device is a mechanical brake device that can slow down the speed of the vehicle, also known as a reducer. Simply put: the brake pedal of the car is under the steering wheel. When you step on the brake pedal, the brake lever is linked to the brake pads on the brake drum, which clamp the brake wheel disc, slowing down or stopping the car. The manual brake of the car is next to the gear and connected to the brake lever. Another common brake is the bicycle brake, which is decelerated by a rod-shaped brake fixed to the frame or a disc-mounted brake.

[0003] Small multi-purpose vehicles (such as golf carts, all-terrain motorcycles, etc.) traditionally use ball-disc brakes. During the braking process, the wire plate guides the movement of the ball, thereby driving the movement of the friction plate, and generating contact braking on the brake disc (wheel). The fixed plate and the friction plate are riveted by guide pillars, and the spacing between them cannot be adjusted. When the friction plate is worn to a certain thickness, the wire plate needs to move more significantly to clamp the friction plate on the brake disc, resulting in unreliable braking. When the friction plate is worn to a large extent, the gap between the friction plates cannot be adjusted, and the friction plates cannot be replaced separately. In order to ensure braking performance, the entire parking mechanism can only be replaced as a whole, which is expensive and inconvenient to use. Utility Model Content

[0004] In order to solve the problem that the braking method of traditional small multi-purpose vehicles is mostly ball-pressure disc brake, when the friction plate is severely worn, the friction plate gap cannot be adjusted, and the friction plate cannot be replaced separately. In order to ensure the braking performance, the entire parking mechanism can only be replaced as a whole, which is expensive and inconvenient to use. The utility model provides a braking device.

[0005] The utility model is realized by the following technical solutions:

[0006] A braking device comprises a fixing plate which can be fixedly connected to a frame and a plurality of connecting bolts which can be connected to the frame, a second friction plate and a first friction plate are slidably penetrated on the connecting bolts, a spring is arranged between the first friction plate and the second friction plate; a through hole through which the connecting bolts can slide; a fixing cam is positioned and installed on a side of the fixing plate away from the frame, a rotating cam which can abut and push the first friction plate is rotatably connected to the fixing cam via a connecting shaft, the opposite surfaces of the fixing cam and the rotating cam are matching cam surfaces, and a wire drawing plate is connected to the rotating cam.

[0007] A further improvement of the utility model is that the fixed cam and the rotating cam are cylindrical structures with coaxial center lines; and the connecting shaft is arranged at the position of the axis center lines of the fixed cam and the rotating cam.

[0008] A further improvement of the utility model is that the connecting shaft is a bolt structure, which passes through the rotating cam and the fixed cam and is connected and installed with the fixed plate.

[0009] A further improvement of the utility model is that a shaft hole for the connecting shaft to pass through is provided on the rotating cam, and one end of the shaft hole away from the fixed cam is a countersunk hole structure.

[0010] A further improvement of the utility model is that a side of the rotating cam away from the fixed cam is covered with a gasket.

[0011] A further improvement of the utility model is that a wire connecting hole which can be connected with the wire is provided on the wire drawing plate.

[0012] A further improvement of the utility model is that the spring is symmetrically arranged between the first friction plate and the second friction plate.

[0013] A further improvement of the utility model is that the spring adopts a conical spring.

[0014] A further improvement of the utility model is that an adjusting nut capable of abutting against a side of the fixing plate close to the vehicle frame is screwed onto the connecting bolt.

[0015] It can be seen from the above technical solutions that the beneficial effects of the utility model are:

[0016] During braking, the cable pulls the cable plate through the cable to drive the rotating cam to rotate relative to the fixed cam. Since the relative end faces of the rotating cam and the fixed cam are matched cam surfaces, the rotating cam can be moved axially outward (guided by the connecting shaft), so that the first friction plate can be pushed toward the second friction plate (outward), and the first friction plate and the second friction plate can hold the brake disc set between them, so as to achieve vehicle braking. The overall structure is simple, easy to implement, and labor-saving. And by rotating the connecting bolt (screwing in and out of the threaded hole on the frame), the distance between the first friction plate and the second friction plate can be flexibly adjusted to ensure reliable braking performance; and by removing the connecting bolt, the first friction plate and the second friction plate can be conveniently replaced without replacing the entire parking mechanism as a whole, effectively reducing costs and ensuring convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.

[0019] Figure 2 It is a top view schematic diagram of a specific implementation method of the utility model.

[0020] Figure 3 This is a schematic diagram of the installation of a fixed cam according to a specific implementation of the utility model.

[0021] Figure 4 It is a schematic diagram of the rotating cam structure of a specific implementation mode of the utility model.

[0022] In the accompanying drawings: 1. fixed plate, 11. through hole, 2. fixed cam, 3. rotating cam, 31. shaft hole, 4. wire drawing plate, 41. wire drawing connecting hole, 5. first friction plate, 6. second friction plate, 7. connecting bolt, 71. adjusting nut, 8. gasket, 9. connecting shaft, 10. spring. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0024] like Figure 1-4 As shown, the utility model discloses a braking device, comprising a fixing plate 1 that can be fixedly connected (welded) to a frame and installed, and four connecting bolts 7 that can be connected to the frame, that is, a threaded hole is provided on the frame, and the ends of the connecting bolts 7 are screwed and installed with the threaded holes; a second friction plate 6 and a first friction plate 5 are installed on the connecting bolts 7 to slide through (from the outside to the inside), and a spring 10 is provided between the first friction plate 5 and the second friction plate 6; a through hole 11 is provided on the fixing plate 1 for the connecting bolts 7 to slide through; a fixing cam 2 is positioned and installed in the middle of a side of the fixing plate 1 away from the frame, and a rotating cam 3 that can abut and push the first friction plate 5 is rotatably connected and installed on the fixing cam 2 through a connecting shaft 9, and the opposite surfaces of the fixing cam 2 and the rotating cam 3 are matching cam surfaces, and a wire drawing plate 4 is connected to the rotating cam 3.

[0025] During braking, the cable pull plate 4 is pulled by the cable to drive the rotating cam 3 to rotate relative to the fixed cam 2. Since the opposite end faces of the rotating cam 3 and the fixed cam 2 are matched cam surfaces, the rotating cam 3 can be moved outward axially (guided by the connecting shaft 9), so that the first friction plate 5 can be pushed toward the second friction plate 6 (outward), and the first friction plate 5 and the second friction plate 6 can hold the brake disc set between them, so as to achieve vehicle braking. The overall structure is simple, easy to implement, and labor-saving. And by rotating the connecting bolt 7 (screwing in and out of the threaded hole on the frame), the distance between the first friction plate 5 and the second friction plate 6 can be flexibly adjusted to ensure reliable braking performance; and by removing the connecting bolt 7, the first friction plate 5 and the second friction plate 6 can be conveniently replaced without replacing the entire parking mechanism as a whole, effectively reducing costs and ensuring convenience of use.

[0026] The portion (outside) of the connecting bolt 7 exposed from the fixing plate 1 is a bare rod, which ensures the reliability and accuracy of the sliding guide of the first friction plate 5 .

[0027] Wherein, the connecting bolt 7 is screwed with an adjusting nut 71 that can abut against one side of the fixing plate 1 close to the frame. By adjusting the nut 71 abutting against the fixing plate 1 and tightening it, the adjusting nut 71 can be prevented from loosening, thereby ensuring the reliability of braking.

[0028] The fixing plate 1 is a U-shaped plate structure bent toward one side of the frame, leaving operating space for rotating the adjusting nut 71 .

[0029] The fixed cam 2 and the rotating cam 3 are cylindrical structures with the same axis, and the connecting shaft 9 is arranged at the axis position of the fixed cam 2 and the rotating cam 3. The structure is simple and the volume is small, which ensures the labor-saving performance of braking.

[0030] The connecting shaft 9 is a bolt structure, which passes through the rotating cam 3 and the fixed cam 2 from the outside to the inside, and is screwed and installed with the fixed plate 1. The set section of the rotating cam 3 on the connecting shaft 9 is a polished rod, and the rotating cam 3 is axially limited by the head of the connecting shaft 9 to ensure the reliability and accuracy of the action.

[0031] Furthermore, the rotating cam 3 is provided with an axial hole 31 for the connecting shaft 9 to pass through, and the end of the axial hole 31 away from the fixed cam 2 is a countersunk structure. The axial hole 31 of the countersunk structure can accommodate the head of the connecting shaft 9 to prevent it from protruding from the outer end surface of the rotating cam 3.

[0032] In order to ensure the service life of the rotating cam 3 , a side of the rotating cam 3 away from the fixed cam 2 is covered with a gasket 8 with high wear resistance.

[0033] Among them, two pull wire connection holes 41 that can be connected to the pull wire are opened on the pull wire plate 4. Selecting a suitable pull wire connection hole 41 to connect the pull wire is convenient for achieving brake braking.

[0034] The spring 10 is symmetrically arranged between the first friction plate 5 and the second friction plate 6 to ensure the balance and stability of the elastic support of the two friction plates.

[0035] Furthermore, the spring 10 is a conical spring, which effectively prevents the spring 10 from being compressed and dead, thereby affecting the braking effect.

[0036] In the present braking device, when braking, the cable pulls the cable plate 4 by pulling the cable to drive the rotating cam 3 to rotate relative to the fixed cam 2. Since the opposite end faces of the rotating cam 3 and the fixed cam 2 are matched cam surfaces, the rotating cam 3 can be moved outward axially (guided by the connecting shaft 9), so that the first friction plate 5 can be pushed toward the second friction plate 6 (outward), and the first friction plate 5 and the second friction plate 6 can hold the brake disc set between them, so as to achieve vehicle braking. The overall structure is simple, easy to implement, and labor-saving. And by rotating the connecting bolt 7 (screwing in and out of the threaded hole on the frame), the distance between the first friction plate 5 and the second friction plate 6 can be flexibly adjusted to ensure reliable braking performance; and by removing the connecting bolt 7, the first friction plate 5 and the second friction plate 6 can be conveniently replaced without replacing the entire parking mechanism as a whole, effectively reducing costs and ensuring convenience of use.

[0037] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0038] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A braking device, characterized in that: The invention comprises a fixing plate (1) which can be fixedly connected to a vehicle frame and a plurality of connecting bolts (7) which can be connected to the vehicle frame. A second friction plate (6) and a first friction plate (5) are slidably penetrated on the connecting bolts (7). A spring (10) is provided between the first friction plate (5) and the second friction plate (6). The fixing plate (1) is provided with a through hole (11) through which the connecting bolts (7) can slide. A fixing cam (2) is positioned and installed on a side of the fixing plate (1) away from the vehicle frame. A rotating cam (3) which can abut and push the first friction plate (5) is rotatably connected to the fixing cam (2) via a connecting shaft (9). The opposite surfaces of the fixing cam (2) and the rotating cam (3) are matching cam surfaces. The rotating cam (3) is connected to a wire drawing plate (4).

2. The braking device according to claim 1, characterized in that: The fixed cam (2) and the rotating cam (3) are cylindrical structures with coaxial centerlines; the connecting shaft (9) is arranged at the position of the axis centerlines of the fixed cam (2) and the rotating cam (3).

3. The braking device according to claim 1, characterized in that: The connecting shaft (9) is a bolt structure, which passes through the rotating cam (3) and the fixed cam (2) and is connected and installed with the fixed plate (1).

4. The braking device according to claim 3, characterized in that: The rotating cam (3) is provided with an axial hole (31) for the connecting shaft (9) to pass through, and the end of the axial hole (31) away from the fixed cam (2) is a countersunk structure.

5. The braking device according to claim 1, characterized in that: The side of the rotating cam (3) away from the fixed cam (2) is covered with a gasket (8).

6. The braking device according to claim 1, characterized in that: The wire pulling plate (4) is provided with a wire pulling connection hole (41) capable of being connected to a wire pulling.

7. The braking device according to claim 1, characterized in that: The spring (10) is symmetrically arranged between the first friction plate (5) and the second friction plate (6).

8. The braking device according to claim 1, characterized in that: The spring (10) is a conical spring.

9. The braking device according to claim 1, characterized in that: An adjusting nut (71) is screwed onto the connecting bolt (7) and is capable of abutting against a side of the fixing plate (1) close to the vehicle frame.

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