Wedge-shaped brake releasing mechanism for engineering machinery drive axle

Abstract

The utility model discloses a wedge-shaped brake releasing mechanism for an engineering machinery drive axle. The wedge-shaped brake releasing mechanism comprises a hollow shell, a friction plate group, a brake disc and a releasing bolt, the friction plate sets and the brake disc are assembled in the shell, the brake disc moves forwards to enable the friction plate sets to be in a brake state when combined, and the brake disc moves backwards to enable the friction plate sets to be in a brake release state when separated. The release bolt is mounted on the radial circumferential surface of the shell near the brake disc in a threaded manner; when the brake is released normally, a gap exists between the releasing bolt and the brake disc; when braking cannot be relieved, the relieving bolt is screwed in and acts on the brake disc, the radial rotation movement of the relieving bolt is converted into the axial backward movement of the brake disc, the friction plate set is separated, and the braking state is relieved. The release position acts on the radial direction of the brake disc, the axial arrangement pressure of the brake mechanism is relieved, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The utility model relates to a wedge-shaped brake release mechanism for an engineering machinery drive axle, belonging to the engineering machinery drive axle brake field. Background Art

[0002] The brakes of the drive axle of construction machinery are divided into driving brakes and parking brakes. The brake types are mainly divided into disc spring brakes and hydraulic brakes according to the power source; and are mainly divided into normally closed and normally open according to the mode. When an accident occurs to the vehicle (such as failure of the hydraulic system), the braking force needs to be released in order to release the brakes, so that the vehicle can drive normally and be towed to a repair shop for repair.

[0003] The main ways to release the brake are: Figure 1 , Figure 2 As shown, the release bolt acts on the axial position of the brake disc. This structure has a relatively high cost and increases the space requirement for the originally compact axial arrangement. It is difficult to implement for some structures with numerous axial parts. Summary of the invention

[0004] In view of the deficiencies of the prior art, the utility model provides a wedge-shaped brake release mechanism for a driving axle of an engineering machinery, which changes the existing axial release position into a radial position, saves axial space, and has a simple structure and is easy to implement.

[0005] The utility model is implemented according to the following technical solutions:

[0006] A wedge-shaped brake release mechanism for a driving axle of an engineering machinery, comprising:

[0007] A hollow shell;

[0008] The friction plate group and the brake disc are assembled in the housing. When the brake disc moves forward to cause the friction plate group to engage, it is in a braking state. When the brake disc moves backward to cause the friction plate group to separate, it is in a released braking state.

[0009] The release bolt is installed in a threaded manner on the radial circumferential surface of the housing near the brake disc; when the brake is released normally, there is a gap between the release bolt and the brake disc; when the brake cannot be released, the release bolt is screwed in to act on the brake disc, converting the radial rotational motion of the release bolt into the axial backward movement of the brake disc, separating the friction plate group, and releasing the braking state.

[0010] In some embodiments, the contact surface between the release bolt and the brake disc is a wedge-shaped surface, and the screwing force of the release bolt is decomposed into a force perpendicular to the wedge-shaped surface and a force parallel to the wedge-shaped surface, forcing the brake disc to move axially backward.

[0011] In some embodiments, the release bolt is provided with a wedge-shaped surface I at the end facing the brake disc, and the brake disc is provided with a wedge-shaped surface II at the circumferential surface facing the release bolt.

[0012] In some embodiments, a limiting component is provided between the release bolt and the brake disc so that a gap is always left between the two. The release bolt can contact the brake disc only after the limiting component is moved out.

[0013] In some embodiments, at least one gasket located outside the brake disc is mounted on the rod of the release bolt, and at least one gasket is used as a limiting component; the release bolt is screwed in until the head of the release bolt presses at least one gasket against the circumferential surface of the brake disc, and a gap exists between the release bolt and the brake disc; after all gaskets are removed, the release bolt continues to be screwed in to contact the brake disc, and the brake disc is pushed axially backward, and the friction plate group is separated.

[0014] In some embodiments, at least two release bolts are evenly spaced along the circumferential direction on the radial circumferential surface of the housing to ensure that the brake disc does not tilt when moving axially backward.

[0015] In some embodiments, the release bolt is a hexagonal head bolt or a butterfly bolt.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides a wedge-shaped brake release mechanism for a driving axle of an engineering machinery, which acts on the radial direction of a brake disc through a release position to relieve the axial arrangement pressure of the brake mechanism, has a simple structure and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0019] In the attached picture:

[0020] Figure 1 Schematic diagram of the brake release mechanism of the engineering machinery drive axle in the prior art Figure 1 ;

[0021] Figure 2 Schematic diagram of the brake release mechanism of the engineering machinery drive axle in the prior art Figure 2 ;

[0022] Figure identification: 100 - release bolt, 200 - brake disc.

[0023] Figure 3 It is a schematic diagram of the wedge-shaped brake release mechanism of the engineering machinery drive axle of the utility model;

[0024] Figure 4 It is a partial enlarged view of the wedge-shaped brake release mechanism of the engineering machinery drive axle of the utility model;

[0025] Figure symbols: 1-release bolt, 2-brake disc, 3-friction plate group, 4-housing, 5-gasket, 6-wedge surface I, 7-wedge surface II.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 3 , Figure 4As shown, a wedge-shaped brake release mechanism for a driving axle of an engineering machinery comprises a hollow shell 4, a friction plate group 3, a brake disc 2 and a release bolt 1; the friction plate group 3 and the brake disc 2 are assembled in the shell 4, and when the brake disc 2 moves forward to cause the friction plate group 3 to engage, it is in a braking state, and when the brake disc 2 moves backward to cause the friction plate group 3 to separate, it is in a brake release state; the release bolt 1 is installed in a threaded manner on the radial circumferential surface of the shell 4 located near the brake disc 2; when the brake is released normally, there is a gap between the release bolt 1 and the brake disc 2; when the brake cannot be released, the release bolt 1 is screwed in to act on the brake disc 2, converting the radial rotational motion of the release bolt 1 into the axial backward movement of the brake disc 2, and the friction plate group 3 is separated, and the brake state is released.

[0031] Further solutions, such as Figure 3 , Figure 4 As shown, the contact surface between the release bolt 1 and the brake disc 2 is a wedge-shaped surface, and the screwing force of the release bolt 1 is decomposed into a force perpendicular to the wedge-shaped surface and a force parallel to the wedge-shaped surface, forcing the brake disc 2 to move axially backward.

[0032] The preferred solution is Figure 3 , Figure 4 As shown, the release bolt 1 is provided with a wedge surface I6 at the end facing the brake disc 2 , and the brake disc 2 is provided with a wedge surface II7 on the circumference facing the release bolt 1 .

[0033] Further solutions, such as Figure 3 , Figure 4 As shown, a limiting component is provided between the release bolt 1 and the brake disc 2 so that a gap is always left between the two. The release bolt 1 can contact the brake disc 2 only after the limiting component is moved out.

[0034] The preferred solution is Figure 3 , Figure 4 As shown, at least one gasket 5 located outside the brake disc 2 is mounted on the rod of the release bolt 1, and at least one gasket 5 is used as a limiting component; the release bolt 1 is screwed in until the head of the release bolt 1 presses at least one gasket 5 against the circumferential surface of the brake disc 2, and a gap exists between the release bolt 1 and the brake disc 2; after all the gaskets 5 are removed, the release bolt 1 is continued to be screwed in to contact the brake disc 2, and the brake disc 2 is pushed axially backward, and the friction plate group 3 is separated.

[0035] Further solutions, such as Figure 3 , Figure 4 As shown, at least two release bolts 1 are evenly spaced along the circumferential direction on the radial circumferential surface of the housing 4 to ensure that the brake disc 2 will not tilt when moving axially backward.

[0036] The preferred solution is Figure 3 , Figure 4As shown, the release bolt 1 adopts a hexagonal head bolt or a butterfly bolt.

[0037] The working process of the wedge-shaped release brake mechanism of the above-mentioned engineering machinery drive axle is given below:

[0038] Continue to refer to Figure 3 , Figure 4 As shown, a wedge-shaped surface Ⅰ6 is provided on the release bolt 1, and a wedge-shaped surface Ⅱ7 is provided on the brake disc 2. When the friction plate group 3 is engaged, it is in a braking state, and when it is separated, it is in a brake-released state.

[0039] The brake part of the drive axle is arranged with two release bolts 1 symmetrically distributed up and down. Under normal conditions, a gasket 2 is installed at the lower part of the release bolt 1, and there is a gap between the wedge surface Ⅰ6 and the wedge surface Ⅱ7. At this time, the braking force acts on the brake disc 2, the brake disc 2 moves forward, and the friction plate group 3 is combined to achieve the braking of the drive axle. Under normal circumstances, the braking force is eliminated, the return force acts on the brake disc 2, the brake disc 2 returns, the friction plate group 3 separates, and the brake is released. When encountering an unexpected situation, the return force is lost, the brake cannot be released, and the vehicle cannot move. At this time, an auxiliary mechanism is required to release it manually.

[0040] When manual release is required, remove the upper and lower gaskets 2 at the same time, and rotate the two release bolts 1 in clockwise direction at the same time. At this time, the release bolt 1 is screwed into the housing 4, and the wedge surface Ⅰ6 gradually approaches the wedge surface Ⅱ7 of the brake disc 2. After the two are combined, continue to screw in the upper and lower release bolts 1 at the same time, and the screw-in force is decomposed into a force perpendicular to the wedge surface and a force parallel to the wedge surface, forcing the brake disc 2 to move backward, the friction plate group 3 is separated, and the braking state is released.

[0041] The purpose of screwing in the two release bolts 1 at the same time is to prevent the brake disc 2 from tilting during the movement process, so as to ensure that the brake disc 2 moves forward and backward more smoothly.

[0042] In summary, the utility model provides a wedge-shaped brake release mechanism for a driving axle of an engineering machinery, which acts on the radial direction of the brake disc through the release position to relieve the axial arrangement pressure of the brake mechanism, has a simple structure and is low in cost.

[0043] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0044] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0045] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A wedge-shaped brake release mechanism for a driving axle of an engineering machinery, characterized in that: include: A hollow shell; The friction plate group and the brake disc are assembled in the housing. When the brake disc moves forward to cause the friction plate group to engage, it is in a braking state. When the brake disc moves backward to cause the friction plate group to separate, it is in a released braking state. The release bolt is installed in a threaded manner on the radial circumferential surface of the housing near the brake disc; when the brake is released normally, there is a gap between the release bolt and the brake disc; when the brake cannot be released, the release bolt is screwed in to act on the brake disc, converting the radial rotational motion of the release bolt into the axial backward movement of the brake disc, separating the friction plate group, and releasing the braking state.

2. The wedge-shaped brake release mechanism for a driving axle of an engineering machinery according to claim 1, characterized in that: The contact surface between the release bolt and the brake disc is a wedge-shaped surface, and the screwing force of the release bolt is decomposed into a force perpendicular to the wedge-shaped surface and a force parallel to the wedge-shaped surface, forcing the brake disc to move axially backward.

3. The wedge-shaped brake release mechanism for a driving axle of an engineering machinery according to claim 2, characterized in that: The release bolt is provided with a wedge-shaped surface I at the end facing the brake disc, and the brake disc is provided with a wedge-shaped surface II at the peripheral surface facing the release bolt.

4. The wedge-shaped brake release mechanism for a construction machinery drive axle according to claim 1, characterized in that: A limiting component is provided between the release bolt and the brake disc so that a gap is always left between the two. The release bolt can contact the brake disc only after the limiting component is moved out.

5. The wedge-shaped brake release mechanism for a driving axle of an engineering machinery according to claim 4, characterized in that: At least one gasket located outside the brake disc is sleeved on the rod of the release bolt, and at least one gasket is used as a limiting component; The release bolt is screwed in until the head of the release bolt presses at least one gasket against the circumferential surface of the brake disc, and a gap exists between the release bolt and the brake disc; after all gaskets are removed, the release bolt is continued to be screwed in until it contacts the brake disc and pushes the brake disc axially backward to separate the friction plate group.

6. The wedge-shaped brake release mechanism for a construction machinery drive axle according to claim 1, characterized in that: At least two release bolts are evenly spaced along the circumferential direction on the radial circumferential surface of the housing to ensure that the brake disc will not tilt when moving axially backward.

7. The wedge-shaped brake release mechanism for a driving axle of an engineering machinery according to claim 1, characterized in that: The release bolt is a hexagonal head bolt or a butterfly bolt.

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