Brake and brake system

Abstract

The present invention provides a brake and a brake system, which relate to the field of vehicle brake technology. The brake includes a brake housing, a brake shaft, a dynamic friction plate, a static friction plate, a brake piston, an end cover and a wear detection bolt. The wear detection bolt is threadedly connected to the brake housing along the radial direction of the brake shaft, and includes a detection end screwed into the brake housing. Excessive wear of the dynamic friction plate and the static friction plate is used to make the detection end abut against one end of the brake piston in the radial direction of the brake shaft, so that the wear detection bolt protrudes from the brake housing. Not only can the brake disassembly and assembly process improve the use experience of the brake, but also the detection of excessive wear of the dynamic friction plate and the static friction plate can be realized during the use of the brake, further improving the use experience of the brake.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle braking, and in particular to a brake and a braking system. Background Art

[0002] At present, it is complicated to replace the brake pads of engineering vehicles, especially when the brake pads are excessively worn. To replace the brake pads, the brakes need to be disassembled as a whole and replaced. In addition, after the brakes have been running for a long time, the wear of the brake pads is unknown, and the remaining braking capacity of the brakes is unknown. If the brake pads are excessively worn and the braking force is insufficient, it may be dangerous and affect the use experience of the brakes. Summary of the invention

[0003] The problem solved by the present invention is: how to improve the use experience of the brake.

[0004] To solve the above problems, on the one hand, the present invention provides a brake, including a brake housing, a brake shaft, a dynamic friction plate, a static friction plate, a brake piston, an end cover and a wear detection bolt, wherein one end of the brake housing is connected to the end cover, and the other end is an open end, one end of the brake shaft is located in the brake housing, and the other end extends from the open end and is used to connect with the driving end of the driving structure, the dynamic friction plate is located in the brake housing and is sleeved on the brake shaft, the brake piston is located between the end cover and the brake shaft, the brake piston is used to move along the axial direction of the brake shaft toward the static friction plate to drive the static friction plate and the dynamic friction plate to friction brake; the brake housing is provided with a threaded hole extending radially along the brake shaft, the threaded hole is located on the moving path of the brake piston, the wear detection bolt is used to be threadedly connected to the threaded hole of the brake housing, and includes a detection end screwed into the inner cavity of the brake housing.

[0005] Optionally, the brake further comprises a brake spring, wherein the brake spring is connected between the end cover and the brake piston, and the expansion of the brake spring is used to drive the brake piston to move along the axial direction of the brake shaft toward the static friction plate.

[0006] Optionally, the end cover is detachably connected to the brake housing via connecting bolts parallel to the brake shaft.

[0007] Optionally, a plurality of positioning grooves are provided at one end of the brake piston facing the end cover, the plurality of positioning grooves are distributed along the circumference of the brake piston, and each positioning groove is correspondingly connected to one of the brake springs.

[0008] Optionally, a placement hole for storing the wear detection bolt is provided on the end cover.

[0009] Optionally, a first emergency brake plug is provided on the end cover, and a second emergency brake plug is provided on the brake piston. Loosening the second emergency brake plug is used to discharge the hydraulic oil in the brake chamber to between the end cover and the brake piston, and the first emergency brake plug is used to discharge the hydraulic oil between the end cover and the brake piston to the outside of the brake housing.

[0010] Optionally, the brake also includes a push rod, a slider, a slide column and a return spring, the brake housing is provided with a first slide groove and a second slide groove, the brake piston is located between the first slide groove and the end cover, the notch of the first slide groove faces the brake piston, the first slide groove is parallel to the brake shaft, the second slide groove is vertically connected to the first slide groove and is located at one end of the first slide groove away from the brake shaft, the slide column is slidably connected to the second slide groove, one end of the slide column is provided with a three-color area, the other end of the slide column is slidably connected to the slider via an inclined surface, the slider is slidably connected to the first slide groove, one end of the push rod is connected to the slider, and the other end of the push rod extends toward the brake piston, the return spring is connected between the slider and the first slide groove, the brake piston pushes the slider through the push rod, the slider compresses the return spring and causes the three-color area on the slide column to leak out from the brake housing, wherein the three-color area includes a green area, a yellow area and a red area that gradually approach the slider.

[0011] Compared with the related art, the brake of the present invention has a dynamic friction plate located in a brake housing and mounted on the brake shaft in the axial direction of the brake shaft, and a brake piston located between the end cover and the brake shaft, so that the dynamic friction plate, the static friction plate, the brake piston and the end cover are distributed in sequence along the axial direction of the brake shaft. Therefore, when disassembling and assembling the brake, it is only necessary to install the dynamic friction plate, the static friction plate, the brake piston and the end cover in sequence along the axial direction of the brake shaft, thereby realizing modular installation of the brake to improve the installation efficiency of the brake, thereby improving the installation experience of the brake. When it is not necessary to detect the wear degree of the friction plate, the threaded hole on the brake housing can be sealed, and when it is necessary to detect the wear degree of the wiper plate, the wear detection bolt The threaded hole located on the moving path of the brake piston can be screwed into the threaded hole, and the excessive wear of the dynamic friction plate and the static friction plate can be converted into a wear detection bolt protruding from the brake housing after the detection end of the wear detection bolt abuts against one end of the brake piston in the radial direction of the brake shaft, thereby realizing the detection of excessive wear of the dynamic friction plate and the static friction plate, so as to remind people to replace the dynamic friction plate and the static friction plate in time without removing the brake, thereby improving the use experience of the brake. In this way, not only can the use experience of the brake be improved from the disassembly and assembly process of the brake, but also the detection of excessive wear of the dynamic friction plate and the static friction plate can be realized during the use of the brake, further improving the use experience of the brake.

[0012] On the other hand, the present invention also provides a braking system, comprising the brake, distribution housing and drive housing as described above, the distribution housing being sleeved on the middle part of the brake shaft of the brake and being sealed and connected to the brake shaft, the distribution housing being located at one end of the brake shaft in the axial direction and connected to the brake housing of the brake, and the other end being connected to the drive housing, the brake housing is also provided with a hydraulic oil inlet, which is connected to the brake housing, the brake piston of the brake is located between the hydraulic oil inlet and the brake spring of the brake, a brake chamber is formed between the brake piston and the distribution housing, and the brake chamber is connected to the hydraulic oil inlet, the hydraulic oil in the brake chamber is used to flush the static friction plate and the dynamic friction plate of the brake, and drive the brake piston to move away from the static friction plate to compress the brake spring.

[0013] Optionally, an oil unloading hole is provided on the distribution housing, and the oil unloading hole is used to communicate with the oil inlet end of the hydraulic oil supply device. A hydraulic oil circulation hole is provided at the axis of the brake shaft, and the hydraulic oil circulation hole is connected between the oil unloading hole and the brake chamber.

[0014] Optionally, the drive housing and the distribution housing are connected by connecting bolts parallel to the brake shaft.

[0015] Compared with the related art, the brake system of the present invention is a flow distribution housing of a flow distribution tooling sleeved on the middle part of the brake shaft and sealed with the brake shaft, and one end of the flow distribution housing located in the axial direction of the brake shaft is connected to the brake housing, and the other end is used to connect with the drive housing of the drive structure. The flow distribution housing can support the brake shaft under the support of the brake housing and the drive housing, and realize the sealing of the open port of the brake housing, and then communicate with the brake housing through the hydraulic oil inlet of the brake housing. The brake piston is located between the hydraulic oil inlet and the brake spring 8. There is a brake chamber between the brake piston and the flow distribution housing, and the brake chamber is communicated with the hydraulic oil inlet. The hydraulic oil in the brake chamber is used to flush the static friction plate and the dynamic friction plate, and drive the brake piston to move away from the static friction plate to compress the brake spring 8. The hydraulic oil in the brake chamber can be used to realize the movement of the brake piston away from the static friction plate, thereby realizing the release of the brake, and in the process of the hydraulic oil flowing into the brake chamber, the flow of the hydraulic oil can realize the cooling of the dynamic friction plate and the static friction plate. In this way, while realizing the release of the brake, the friction plate can also be cooled, so that no additional friction plate cooling structure is required to simplify the structure of the brake. In addition, by distributing the drive housing, the distribution housing and the brake housing in sequence along the axial direction of the brake shaft, during the disassembly and assembly process, whether it is the disassembly and assembly of the brake or the disassembly and assembly of the drive housing and the distribution housing, they can be assembled in sequence along the axial direction of the brake shaft. This not only facilitates the independent installation of the drive housing, the distribution housing and the brake, but also ensures the consistency of the assembly direction, thereby improving the assembly efficiency of the brake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of the brake in the embodiment of the present invention when it is not in braking state;

[0017] Figure 2 It is a schematic diagram of the structure of the brake in the embodiment of the present invention when the brake is in braking state;

[0018] Figure 3 This is a schematic diagram of the structure when the hydraulic oil releases the brake in an embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of a braking system in an embodiment of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the wear warning in the embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-brake housing; 2-brake shaft; 3-dynamic friction plate; 4-static friction plate; 5-brake piston; 6-end cover; 7-wear detection bolt; 8-brake spring; 9-connecting bolt; 10-distribution housing; 11-drive housing; 12-hydraulic oil inlet; 13-brake chamber; 14-hydraulic oil flow hole; 15-positioning groove; 16-emergency brake plug; 17-push rod; 18-slider; 19-sliding column; 191-green area; 192-yellow area; 193-red area; 20-reset spring; 21-first slide groove; 22-second slide groove. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the drawings, the X-axis represents the horizontal position, and the positive direction of the X-axis (that is, the direction in which the arrow of the X-axis points) represents the right side, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the left side; in the drawings, the Z-axis represents the vertical position, and the positive direction of the Z-axis (that is, the direction in which the arrow of the Z-axis points) represents the upper side, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the lower side. It should also be noted that the aforementioned X-axis and Z-axis 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0026] Combination Figures 1 to 4 As shown, an embodiment of the present invention provides a brake, which includes a brake housing 1, a brake shaft 2, a dynamic friction plate 3, a static friction plate 4, a brake piston 5, an end cover 6 and a wear detection bolt 7. One end of the brake housing 1 is connected to the end cover 6, and the other end is an open end. One end of the brake shaft 2 is located in the brake housing 1, and the other end extends from the open end and is used to be connected to the driving end of the driving structure. The dynamic friction plate 3 is located in the brake housing 1 and is sleeved on the brake shaft 2. The brake piston 5 is located between the end cover 6 and the brake shaft 2. The brake piston 5 is used to move along the axial direction of the brake shaft 2 toward the static friction plate 4 to drive the static friction plate 4 and the dynamic friction plate 3 to friction brake; the brake housing 1 is provided with a threaded hole extending along the radial direction of the brake shaft 2, and the threaded hole is located on the moving path of the brake piston 5. The wear detection bolt 7 is used to be threadedly connected with the threaded hole of the brake housing 1, and includes a detection end screwed into the inner cavity of the brake housing 1.

[0027] Specifically, the brake housing 1 may be a cylindrical structure and include two open ends in the axial direction, wherein the open end in the positive direction of the X-axis is connected to the end cover 6, and the open end in the negative direction of the X-axis is used for the brake shaft 2 to pass through. The axis of the brake shaft 2 is parallel to the X-axis, and the end of the brake shaft 2 in the positive direction of the X-axis extends into the brake housing 1. The dynamic friction plate 3 is located in the brake housing 1 and is mounted on the brake shaft 2 to rotate synchronously with the brake shaft 2 around the axis of the brake shaft 2. The brake piston 5 is located between the end cover 6 and the brake shaft 2. The brake piston 5 is used to move toward the static friction plate 4 along the axial direction of the brake shaft 2, so that the static friction plate 4 and the dynamic friction plate 3 are frictionally braked. It can be understood that the static friction plate 4 is installed on the inner wall of the brake housing 1 in a floating manner along the axial direction of the brake shaft 2, that is, the static friction plate 4 will not rotate in the brake housing 1, and the static friction plate 4 is only allowed to move in the brake housing 1 along the axial direction of the brake shaft 2. Oil grooves are respectively provided on the two adjacent end faces of the static friction plate 4 and the dynamic friction plate 3. After the oil in the oil groove overflows from the oil groove, an oil film can be formed between the two end faces of the static friction plate 4 and the dynamic friction plate 3. When braking is not needed, the static friction plate 4 and the dynamic friction plate 3 are separated by relying on the tension of the oil film surface (this process can be achieved by existing technical means). Figure 1As shown, a threaded hole is provided at the upper end of the brake housing 1, and the threaded hole penetrates the top of the brake housing 1 along the radial direction of the brake shaft 2. The threaded hole is located on the side of the brake piston 5 facing the negative direction of the X-axis. When the friction plate wear detection is not required, the threaded hole can be sealed by a corresponding sealing screw plug to ensure the sealing of the brake housing 1, thereby preventing the brake housing 1 from leaking hydraulic oil. The operating principle of the brake in the embodiment of the present invention is: when braking is not required, the dynamic friction plate 3 and the static friction plate 4 are separated by the surface tension of the oil film, and the brake piston 5 is separated from the static friction plate 4 under the pressure of the hydraulic oil; when braking is required, the brake piston 5 can move toward the static friction plate 4 under the drive of the brake spring 8 (see below for details), and after the brake piston 5 and the static friction plate 4 are against each other, the brake piston 5 pushes the static friction plate 4 and overcomes the surface tension of the oil film to brake with the dynamic friction plate 3 by friction. According to the operating principle of the brake, the setting principle of the threaded hole is introduced: as the friction plate wears, the thickness of the dynamic friction plate 3 and the static friction plate 4 in the axial direction of the brake shaft 2 gradually becomes thinner, and the change in thickness size is the wear amount of the friction plate, that is, the degree of wear. The amount of friction pad wear gradually increases during the use of the brake. The increase in the amount of friction pad wear will cause the displacement of the brake piston 5 that needs to be moved axially along the brake shaft 2 to gradually increase during braking. When the actual amount of friction pad wear is greater than the standard amount of friction pad wear, the dynamic friction pad 3 and the static friction pad 4 are excessively worn. When the excessively worn brake is applied, the position of the brake piston 5 when it abuts against the static friction pad 4 and stops moving will cover the threaded hole, that is, the brake piston 5 stops below the threaded hole during braking, and the outer peripheral wall of the brake piston 5 covers the threaded hole. When the actual amount of friction pad wear is not greater than the standard amount of friction pad wear, the stop position of the brake piston 5 during braking is located on the side of the threaded hole facing the positive direction of the X-axis, that is, the threaded hole is not covered. Based on the above process, the wear detection process of the wear detection bolt 7 in the embodiment of the present invention includes at least the following situations:

[0028] Case 1:

[0029] When the degree of wear does not need to be detected, the threaded hole can be sealed by a sealing screw plug. When the degree of wear needs to be detected, the brake is applied, and when the dynamic friction plate 3 and the static friction plate 4 are within the normal wear range of the friction plate, the brake piston 5 stops on the right side of the threaded hole (i.e., the side in the positive direction of the X-axis) during braking, and the outer peripheral wall of the brake piston 5 will not cover the threaded hole. At this time, the wear detection bolt 7 is used for detection. The wear detection bolt 7 can be completely screwed into the inner cavity of the brake housing 1, and the detection end of the wear detection bolt 7 will not interfere with the outer peripheral wall of the brake piston 5. That is, when the dynamic friction plate 3 and the static friction plate 4 are in normal wear, the wear detection bolt 7 does not protrude from the brake housing 1. Figure 1 As shown, it is shown that the dynamic friction plate 3 and the static friction plate 4 can still be used normally. After the wear detection is completed, the wear detection bolt 7 is screwed out of the threaded hole, and the threaded hole is sealed again by the sealing screw plug.

[0030] Case 2:

[0031] When the wear degree needs to be detected, the brake is applied and the sealing screw plug in the threaded hole is removed. If the dynamic friction plate 3 and the static friction plate 4 are excessively worn, the outer peripheral wall of the brake piston 5 will block the threaded hole. Figure 2 As shown, at this time, the detection end of the wear detection bolt 7 will abut against the outer peripheral wall of the brake piston 5, and the wear detection bolt 7 cannot be completely screwed into the inner cavity of the brake housing 1, and protrudes from the surface of the brake housing 1, and it is necessary to replace the dynamic friction plate 3 and the static friction plate 4. After the wear detection is completed, the wear detection bolt 7 is screwed out of the threaded hole, and the threaded hole is sealed again with a sealing screw plug, and then the dynamic friction plate 3 and the static friction plate 4 are replaced.

[0032] Therefore, in the present embodiment, in the axial direction of the brake shaft 2, the dynamic friction plate 3 is located in the brake housing 1 and is sleeved on the brake shaft 2, and the brake piston 5 is located between the end cover 6 and the brake shaft 2, so that the dynamic friction plate 3, the static friction plate 4, the brake piston 5 and the end cover 6 are distributed in sequence along the axial direction of the brake shaft 2, so that when disassembling and assembling the brake, it is only necessary to install the dynamic friction plate 3, the static friction plate 4, the brake piston 5 and the end cover 6 in sequence along the axial direction of the brake shaft 2, thereby realizing modular installation of the brake to improve the installation efficiency of the brake, thereby improving the installation experience of the brake; when it is not necessary to detect the wear degree of the friction plate, the threaded hole on the brake housing 1 can be sealed, and when it is necessary to detect the wear degree of the wiper, the wear detection screw The bolt 7 can be screwed into the threaded hole located on the moving path of the brake piston 5. The excessive wear of the dynamic friction plate 3 and the static friction plate 4 can be converted into the wear detection bolt 7 protruding out of the brake housing 1 after the detection end of the wear detection bolt 7 abuts against the outer peripheral wall of the brake piston 5, thereby realizing the detection of excessive wear of the dynamic friction plate 3 and the static friction plate 4, so that the wear conditions of the dynamic friction plate 3 and the static friction plate 4 can be known without removing the brake, thereby improving the use experience of the brake. In this way, not only can the use experience of the brake be improved from the disassembly and assembly process of the brake, but also the detection of excessive wear of the dynamic friction plate 3 and the static friction plate 4 can be realized during the use of the brake, further improving the use experience of the brake.

[0033] Optionally, combined Figures 1 to 4 As shown, the brake further includes a brake spring 8 , which is connected between the end cover 6 and the brake piston 5 . The expansion of the brake spring 8 is used to drive the brake piston 5 to move along the axial direction of the brake shaft 2 toward the static friction plate 4 .

[0034] Specifically, the brake spring 8 is selected as a V-shaped spring, which is connected between the end cover 6 and the brake piston 5. When braking is required, the V-shaped spring is relaxed, that is, the relaxation of the V-shaped spring drives the brake piston 5 to move toward the static friction plate 4 along the axial direction of the brake shaft 2, that is, the driving force for the brake piston 5 to move toward the static friction plate 4 is the elastic force of the brake spring 8. In the process of disassembling and assembling the brake spring 8, it is only necessary to disassemble the end cover 6 from the brake housing 1 to realize the disassembly and assembly of the brake spring 8, without disassembling the brake as a whole and then disassembling and assembling the brake spring 8.

[0035] In this way, the brake spring 8 is connected between the end cover 6 and the brake piston 5, and the expansion of the brake spring 8 is used to drive the brake piston 5 to move along the axial direction of the brake shaft 2 toward the static friction plate 4. Not only can the braking effect be achieved through the elastic force of the brake spring 8, but the brake spring 8 can also be easily disassembled and assembled separately, thereby further improving the disassembly and assembly efficiency of the brake.

[0036] Optionally, combined Figures 1 to 4 As shown, the end cover 6 is detachably connected to the brake housing 1 via connecting bolts 9 parallel to the brake shaft 2 .

[0037] Specifically, one end where the end cover 6 and the brake housing 1 are connected is respectively provided with a threaded hole parallel to the brake shaft 2 , and the end cover 6 is detachably connected to the brake housing 1 via a connecting bolt 9 parallel to the brake shaft 2 .

[0038] In this way, the end cover 6 is detachably connected to the brake housing 1 through the connecting bolts 9 parallel to the brake shaft 2, so that the connecting bolts 9 and the end cover 6 are both located in the axial direction of the brake shaft 2. Therefore, during the disassembly and assembly of the end cover 6, there is no need for workers to frequently adjust the use position of the installation tool, so as to improve the installation efficiency of the end cover 6 and further improve the installation efficiency of the brake.

[0039] Optionally, combined Figure 3 and Figure 4 As shown, a plurality of positioning grooves 15 are provided at one end of the brake piston 5 facing the end cover 6 . The plurality of positioning grooves 15 are distributed along the circumference of the brake piston 5 , and each positioning groove 15 is connected to a corresponding brake spring 8 .

[0040] Specifically, a plurality of positioning grooves 15 are provided at one end of the brake piston 5 facing the end cover 6 , that is, the end of the brake piston 5 facing the positive direction of the X-axis. The plurality of positioning grooves 15 are distributed along the axis of the brake piston 5 , and only one brake spring 8 is installed in each positioning groove 15 .

[0041] In this way, a plurality of positioning grooves 15 distributed along the circumference of the brake piston 5 are provided through one end of the brake piston 5 facing the end cover 6, and each positioning groove 15 is connected to a corresponding brake spring 8, so that the brake spring 8 can be positioned by the corresponding positioning groove 15, thereby ensuring the stability of the brake spring 8 while increasing the number of brake springs 8 to improve the braking efficiency.

[0042] Optionally, combined Figure 1 As shown, the end cover 6 is provided with a placement hole for storing the wear detection bolt 7 .

[0043] Specifically, the placement hole is located at the upper end of the end cover 6. The purpose of the placement hole is to prevent the detection end of the wear detection bolt 7 from always being located on the moving path of the brake piston 5, and to prevent the detection end of the wear detection bolt 7 from hindering the movement of the brake piston 5 toward the static friction plate 4 when the dynamic friction plate 3 and the static friction plate 4 are excessively worn, thereby preventing the wear detection bolt 7 from affecting the braking effect. When the wear detection bolt 7 is stored in the placement hole, the internal threaded hole on the brake housing 1 can be sealed by an additional sealing plug.

[0044] Optionally, combined Figure 3 As shown, a first emergency brake plug 16 is also provided on the end cover 6, and a second emergency brake plug is provided on the brake piston 5. Loosening the second emergency brake plug is used to discharge the hydraulic oil in the brake chamber 13 to between the end cover 6 and the brake piston 5, and the first emergency brake plug 16 is used to discharge the hydraulic oil between the end cover 6 and the brake piston 5 to the outside of the brake housing 1.

[0045] Specifically, the first emergency brake plug 16 and the second emergency brake plug are used in specific environments. For example, during braking, due to insufficient discharge of the hydraulic oil in the brake chamber 13, the movement of the brake piston 5 toward the static friction plate 4 is insufficient to generate effective friction. At this time, the first emergency brake plug 16 can be loosened to be removed from the end cover 6, and then the second emergency brake plug set on the brake piston 5 can be loosened to discharge the hydraulic oil in the brake chamber 13 to between the end cover 6 and the brake piston 5, so that the hydraulic oil discharged between the end cover 6 and the brake piston 5 can be discharged to the outside of the brake housing 1 through the end cover 6, so that the brake piston 5 can effectively achieve friction braking. After the discharge, the first emergency brake plug 16 and the second emergency brake plug should be restored in time.

[0046] In this way, the second emergency brake plug is loosened to discharge the hydraulic oil in the brake chamber 13 to between the end cover 6 and the brake piston 5, and the first emergency brake plug 16 is used to discharge the hydraulic oil between the end cover 6 and the brake piston 5 to the outside of the brake housing 1, so that the hydraulic oil in the brake chamber 13 can be effectively discharged to avoid the hydraulic oil in the brake chamber 13 affecting the braking effect.

[0047] Optionally, combined Figure 1 and Figure 5 As shown, the brake further includes a push rod 17, a slider 18, a slide column 19 and a return spring 20. The brake housing 1 is provided with a first slide groove 21 and a second slide groove 22. The brake piston 5 is located between the first slide groove 21 and the end cover 6. The notch of the first slide groove 21 faces the brake piston 5. The first slide groove 21 is parallel to the brake shaft 2. The second slide groove 22 is vertically connected to the first slide groove 21 and is located at one end of the first slide groove 21 away from the brake shaft 2. The slide column 19 is slidably connected to the second slide groove 22. One end of the slide column 19 is provided with a three-color area. The other end of the slide column 19 is provided with a three-color area. The end is connected to the slider 18 through an inclined sliding connection, the slider 18 is connected to the first sliding groove 21 through a sliding connection, one end of the push rod 17 is connected to the slider 18, and the other end of the push rod 17 extends toward the brake piston 5, and the return spring 20 is connected between the slider 18 and the first sliding groove 21. The brake piston 5 pushes the slider 18 through the push rod 17, and the slider 18 compresses the return spring 20 and exposes the three-color area on the slide column 19 from the brake housing 1, wherein the three-color area includes a green area 191, a yellow area 192 and a red area 193 that gradually approach the slider 18.

[0048] Specifically, Figure 5 As shown, one end of the push rod 17 is fixedly connected to the slider 18, and the other end extends to the outside of the first slide groove 21. The end of the push rod 17 extending to the outside of the first slide groove 21 is flush with the static friction plate 4 closest to the brake piston 5. During braking, the static friction plate 4 closest to the brake piston 5 and the push rod 17 are simultaneously against the brake piston 5. When the brake piston 5 pushes the static friction plate 4, the brake piston 5 also pushes the push rod 17, and causes the slider 18 to slide toward the inside of the first slide groove 21 and compress the return spring 20, wherein the return spring 20 can provide a return driving force for the slider 18 when the brake is released, so as to facilitate the return of the slider 18. During the sliding process of the slider 18 into the first slide groove 21, the slider 18 pushes the slide column 19 to slide upward in the second slide groove 22 through the inclined surface, and the uppermost green area extends from the brake housing 1. As the wear degree of the dynamic friction plate 3 and the static friction plate 4 increases, the greater the displacement of the push rod 17 pushed by the brake piston 5, the greater the displacement of the slide column 19 driven by the slider 18 to slide upward, and the yellow area 192 will protrude from the brake housing 1. When the lowermost red area 192 will protrude from the brake housing 1, the red area 192 reminds people that they need to use the wear detection bolt 7 to detect the wear degree of the dynamic friction plate 3 and the static friction plate 4, and replace the dynamic friction plate 3 and the static friction plate 4 in time. In this way, the different wear degrees of the dynamic friction plate 3 and the static friction plate 4 can be reflected by the green area 191, the yellow area 192 and the red area 193, and when the red area 193 protrudes from the brake housing 1, it can timely remind people that they need to use the wear detection bolt 7 to detect the wear degree of the dynamic friction plate 3 and the static friction plate 4, and replace the dynamic friction plate 3 and the static friction plate 4 in time.

[0049] Based on the above embodiment, the slide column 19 and the second slide groove 22 can be respectively provided with a slot and a tooth, and the tooth and the slot are engaged. For example, a plurality of slots are provided on the inner wall of the second slide groove 22, and the slide column 19 is provided with a tooth. When the green area 191 protrudes out of the brake housing 1, the tooth can be stuck in the corresponding slot, so that the green area 191 can remain protruding out of the brake housing 1, so as to improve the purpose of continuous reminder.

[0050] In some embodiments, a sealing structure is also provided between the slide post 19 and the second slide groove 22 to prevent the hydraulic oil from leaking from between the slide post 19 and the second slide groove 22 .

[0051] On the other hand, combined Figure 3 to Figure 4 As shown, another embodiment of the present invention also provides a braking system, including the brake, distribution housing 10 and drive housing 11 as mentioned above, the distribution housing 10 is sleeved on the middle part of the brake shaft 2 of the brake and is sealed with the brake shaft 2, the distribution housing 10 is located at one end of the brake shaft 2 in the axial direction and is connected to the brake housing 1 of the brake, and the other end is connected to the drive housing 11, and a hydraulic oil inlet 12 is also provided on the brake housing 1, the hydraulic oil inlet 12 is communicated with the brake housing 1, the brake piston 5 of the brake is located between the hydraulic oil inlet 12 and the brake spring 8 of the brake, and a brake chamber 13 is formed between the brake piston 5 and the distribution housing 10, and the brake chamber 13 is communicated with the hydraulic oil inlet 12, and the hydraulic oil in the brake chamber 13 is used to flush the static friction plate 4 and the dynamic friction plate 3 of the brake, and drive the brake piston 5 to move away from the static friction plate 4 to compress the brake spring 8.

[0052] Specifically, the driving structure can be a hydraulic motor, one end of the brake shaft 2 is connected to the turntable of the hydraulic motor through a spline, and the other end is located in the brake housing 1, the distribution housing 10 is sleeved on the part of the brake shaft 2 located outside the brake housing 1, specifically sleeved on the middle part of the brake shaft 2, the distribution housing 10 is connected between the drive housing 11 and the brake housing 1, the middle part of the brake shaft 2 is supported by the distribution housing 10, the end of the distribution housing 10 close to the brake housing 1 is rotatably connected to the brake shaft 2, and a sealing structure is provided at the rotating connection, a hydraulic oil inlet 12 is provided at the lower end of the brake housing 1, the hydraulic oil inlet 12 is connected to the inside of the brake housing 1, the brake piston 5 is located between the hydraulic oil inlet 12 and the brake spring 8, and a brake chamber 13 is between the brake piston 5 and the distribution housing 10, and the brake chamber 13 is connected to the hydraulic oil inlet 12. When the brake is released, the hydraulic oil outside the brake housing 1 enters the brake chamber 13 through the hydraulic oil inlet 12. Since the brake chamber 13 is located at the end of the brake piston 5 away from the brake spring 8, the hydraulic oil in the brake chamber 13 will push the brake piston 5 to move away from the static friction plate 4, thereby overcoming the elastic force of the brake spring 8 and achieving compression of the brake spring 8. In the process of the hydraulic oil entering the brake chamber 13, the flow of the hydraulic oil can flush the static friction plate 4 and the dynamic friction plate 3. The hydraulic oil can exchange heat with the static friction plate 4 and the dynamic friction plate 3 to take away the friction heat of the static friction plate 4 and the dynamic friction plate 3 during braking, thereby achieving cooling of the static friction plate 4 and the dynamic friction plate 3 while the brake is released.

[0053] Therefore, in this embodiment, the distribution housing 10 of the distribution tooling is sleeved on the middle part of the brake shaft 2 and is sealed and connected to the brake shaft 2, and one end of the distribution housing 10 located in the axial direction of the brake shaft 2 is connected to the brake housing 1, and the other end is used to connect with the drive housing 11 of the drive structure. The distribution housing 10 can support the brake shaft 2 under the support of the brake housing 1 and the drive housing 11, and realize the sealing of the open end of the brake housing 1, and then communicate with the brake housing 1 through the hydraulic oil inlet 12 of the brake housing 1. The brake piston 5 is located between the hydraulic oil inlet 12 and the brake spring 8, and the brake chamber 13 is between the brake piston 5 and the distribution housing 10. , and the brake chamber 13 is connected to the hydraulic oil inlet 12. The hydraulic oil in the brake chamber 13 is used to flush the static friction plate 4 and the dynamic friction plate 3, and drive the brake piston 5 to move away from the static friction plate 4 to compress the brake spring 8. The hydraulic oil in the brake chamber 13 can be used to move the brake piston 5 away from the static friction plate 4, thereby realizing the release of the brake. In the process of the hydraulic oil flowing into the brake chamber 13, the flow of the hydraulic oil can realize the cooling of the dynamic friction plate 3 and the static friction plate 4. In this way, while realizing the release of the brake, the friction plate can also be cooled, so that no additional friction plate cooling structure is required to simplify the structure of the brake. In addition, the drive housing 11, the distribution housing 10 and the brake housing 1 are sequentially distributed along the axial direction of the brake shaft. During the disassembly and assembly process, whether it is the disassembly and assembly of the brake or the disassembly and assembly of the drive housing 11 and the distribution housing 10, they can be assembled sequentially along the axial direction of the brake shaft, which not only facilitates the independent installation of the drive housing, the distribution housing 10 and the brake, but also ensures the consistency of the assembly direction to improve the assembly efficiency of the brake system.

[0054] Optionally, combined Figure 3 As shown, an oil unloading hole is provided on the distribution housing 10, and the oil unloading hole is used to communicate with the oil inlet end of the hydraulic oil supply device. A hydraulic oil circulation hole 14 is provided at the axis of the brake shaft 2, and the hydraulic oil circulation hole 14 is connected between the oil unloading hole and the brake chamber 13.

[0055] Specifically, the hydraulic oil circulation hole 14 passes through the brake shaft 2 along the axis of the brake shaft 2, and the distribution housing 10 is provided with an oil discharge hole, which is used to communicate with the oil inlet end of the hydraulic oil supply device. The hydraulic oil circulation hole 14 is connected between the oil discharge hole and the brake chamber 13. The oil discharge hole, the hydraulic oil circulation hole 14, the brake chamber 13 and the hydraulic oil inlet 12 can form a hydraulic oil circuit with the hydraulic oil supply device. During braking, the movement of the brake piston 5 toward the static friction plate 4 causes the hydraulic oil in the brake chamber 13 to gather at the hydraulic oil circulation hole 14, and after flowing through the oil discharge hole from the hydraulic oil circulation hole 14, it flows back to the oil inlet end of the hydraulic oil supply device to prevent the hydraulic oil in the brake chamber 13 from affecting the movement of the brake piston 5. When the brake needs to be released, the oil inlet end of the hydraulic oil supply device is closed, and the oil outlet end of the hydraulic oil supply device supplies oil to the brake chamber 13. When the brake needs to be released, the oil inlet end of the hydraulic oil supply device is opened, and the oil outlet end of the hydraulic oil supply device stops supplying oil to the brake chamber 13.

[0056] In this way, the oil unloading hole on the distribution housing 10 is used to communicate with the oil inlet end of the hydraulic oil supply device, and the hydraulic oil circulation hole 14 at the axis of the brake shaft 2 is connected between the oil unloading hole and the brake chamber 13, so that the brake chamber 13 can be connected with the oil inlet end of the hydraulic oil supply device through the oil unloading hole and the hydraulic oil circulation hole 14, thereby forming a return oil channel for the hydraulic oil, so as to avoid the hydraulic oil in the brake chamber 13 affecting the movement of the brake piston 5 during braking, thereby improving the braking effect.

[0057] Optionally, combined Figure 4 As shown, the brake housing 1 and the valve housing 10 are connected via connecting bolts 9 which are parallel to the brake shaft 2 .

[0058] Specifically, similar to the connection method between the brake housing 1 and the end cover 6, the brake housing 1 and the distribution housing 10 are connected by connecting bolts 9 parallel to the brake shaft 2, thereby avoiding frequent changes in the installation direction of the connecting bolts 9 during the disassembly and assembly of the distribution housing 10, so as to improve the disassembly and assembly efficiency of the distribution housing 10.

[0059] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A brake, characterized in that: The invention comprises a brake housing (1), a brake shaft (2), a dynamic friction plate (3), a static friction plate (4), a brake piston (5), an end cover (6) and a wear detection bolt (7); one end of the brake housing (1) is connected to the end cover (6), and the other end is an open end; one end of the brake shaft (2) is located in the brake housing (1), and the other end extends from the open end and is used to be connected to the driving end of the driving structure; the dynamic friction plate (3) is located in the brake housing (1) and is sleeved on the brake shaft (2); the brake piston (5) is located in the end cover (6) and the other end is an open end; 6) and the brake shaft (2), the brake piston (5) is used to move along the axial direction of the brake shaft (2) toward the static friction plate (4) to drive the static friction plate (4) and the dynamic friction plate (3) to perform friction braking; the brake housing (1) is provided with a threaded hole extending radially along the brake shaft (2), and the threaded hole is located on the moving path of the brake piston (5); the wear detection bolt (7) is used to be threadedly connected with the threaded hole of the brake housing (1), and includes a detection end screwed into the inner cavity of the brake housing (1).

2. The brake according to claim 1, characterized in that The brake further comprises a brake spring (8), wherein the brake spring (8) is connected between the end cover (6) and the brake piston (5), and the expansion of the brake spring (8) is used to drive the brake piston (5) to move along the axial direction of the brake shaft (2) toward the static friction plate (4).

3. The brake according to claim 1, characterized in that The end cover (6) is detachably connected to the brake housing (1) via a connecting bolt (9) parallel to the brake shaft (2).

4. The brake according to claim 2, characterized in that A plurality of positioning grooves (15) are provided at one end of the brake piston (5) facing the end cover (6), the plurality of positioning grooves (15) are distributed along the circumference of the brake piston (5), and each positioning groove (15) is correspondingly connected to one of the brake springs (8).

5. The brake according to claim 1, characterized in that: The end cover (6) is provided with a placement hole for storing the wear detection bolt (7).

6. The brake according to claim 1, characterized in that The end cover (6) is also provided with a first emergency brake plug (16), and the brake piston (5) is provided with a second emergency brake plug. The second emergency brake plug is loosened to discharge the hydraulic oil in the brake chamber (13) to between the end cover (6) and the brake piston (5), and the first emergency brake plug (16) is used to discharge the hydraulic oil between the end cover (6) and the brake piston (5) to the outside of the brake housing (1).

7. The brake according to claim 1, characterized in that The brake housing (1) further comprises a push rod (17), a slider (18), a slide column (19) and a return spring (20); a first slide groove (21) and a second slide groove (22) are provided on the brake housing (1); the brake piston (5) is located between the first slide groove (21) and the end cover (6); the notch of the first slide groove (21) faces the brake piston (5); the first slide groove (21) is parallel to the brake shaft (2); the second slide groove (22) is vertically connected to the first slide groove (21) and is located at an end of the first slide groove (21) away from the brake shaft (2); the slide column is slidably connected to the second slide groove (22); one end of the slide column (19) is provided with a three-color area; the other end of the slide column (19) is connected to the slider ( 18) is connected by an inclined sliding connection, the slider (18) is slidably connected to the first slide groove (21), one end of the push rod (17) is connected to the slider (18), the other end of the push rod (17) extends toward the brake piston (5), the return spring (20) is connected between the slider (18) and the first slide groove (21), the brake piston (5) pushes the slider (18) through the push rod (17), the slider (18) compresses the return spring (20) and makes the three-color area on the slide column (19) leak out from the brake housing (1), wherein the three-color area includes a green area (191), a yellow area (192) and a red area (193) gradually approaching the slider (18).

8. A braking system, characterized in that: The invention comprises a brake, a distribution housing (10) and a drive housing (11) as claimed in any one of claims 1 to 7, wherein the distribution housing (10) is sleeved on the middle part of the brake shaft (2) of the brake and is sealed to the brake shaft (2); one end of the distribution housing (10) located in the axial direction of the brake shaft (2) is connected to the brake housing (1) of the brake, and the other end is connected to the drive housing (11); the brake housing (1) is also provided with a hydraulic oil inlet (12), and the hydraulic oil inlet (12) is connected to the brake housing. The brake piston (5) of the brake is located between the hydraulic oil inlet (12) and the brake spring (8) of the brake. A brake chamber (13) is provided between the brake piston (5) and the distribution housing (10). The brake chamber (13) is connected to the hydraulic oil inlet (12). The hydraulic oil in the brake chamber (13) is used to flush the static friction plate (4) and the dynamic friction plate (3) of the brake and drive the brake piston (5) to move away from the static friction plate (4) to compress the brake spring (8).

9. The braking system according to claim 8, characterized in that: The distribution housing (10) is provided with an oil discharge hole, which is used to communicate with the oil inlet end of the hydraulic oil supply device. The axis of the brake shaft (2) is provided with a hydraulic oil circulation hole (14), which is connected between the oil discharge hole and the brake chamber (13).

10. The braking system according to claim 8, characterized in that: The drive housing (11) and the distribution housing (10) are connected via connecting bolts (9) parallel to the brake shaft (2).

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