Hydraulic motor shell convenient to adjust brake response and hydraulic motor
By designing cross-connected oil drainage channels and oil inlet channels on the hydraulic motor housing, and using screw plugs and oil drainage plug structures, the problem of disassembly of the motor rear cover in the prior art is solved, and the rear cover of the motor is realized Quick and convenient adjustment and repair.
Patent Information
- Application Number
- CN202420626232.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing hydraulic motor brake throttling structure requires the disassembly of the motor rear cover and the housing when adjusting the brake response, and repairing and replacing the throttle holes is difficult and inefficient.
A hydraulic motor housing is designed, including a first oil drain channel and a second oil drain channel that are connected across the cross-connected. The oil drain channel and the oil inlet channel are located in different radial directions. By setting screw blocks and oil drain blocks on the shell , realize the adjustment of the oil in the brake oil chamber.
The brake response can be adjusted by replacing the oil drain plug without removing the motor back cover, which improves the efficiency and convenience of debugging and maintenance.
Smart Images
Figure CN222502480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic motor braking, in particular to a hydraulic motor housing and a hydraulic motor which are convenient for adjusting braking response. Background Art
[0002] The hydraulic motor is an actuator of the hydraulic system, which converts the liquid pressure energy provided by the hydraulic pump into the mechanical energy of its output shaft. The hydraulic motor brake is executed by spring force, and the brake contact is based on the hydraulic force. The two types of hydraulic motor brake throttling structures currently used are as follows:
[0003] like Figure 1 The figure shows a schematic diagram of a current brake throttling structure, including a motor rear cover 1, a brake piston 2 and a motor housing 3. The brake piston 2 is located between the motor rear cover 1 and the motor housing 3. The brake piston 2, two sealing rings and the motor housing 3 form a brake oil chamber 5. The gap between the motor rear cover 1 and the brake piston 2 is connected to the housing oil chamber 4. A throttling hole 21 is provided on the brake piston 2. The two ends of the throttling hole 21 are separated and connected to the brake oil chamber 5 and the housing oil chamber 4. When the oil in the brake oil chamber 5 is completely discharged into the housing oil chamber 4 through the throttling hole 21, the brake piston 2 will press the friction plate 8 under the action of the spring 7 to achieve the braking effect. The size of the throttling hole 21 determines the oil leakage speed of the oil in the brake oil chamber 5 during this process, and then determines the braking response time.
[0004] like Figure 2 As shown, it is a schematic diagram of another current brake throttling structure, including a motor rear cover 1, a brake piston 2 and a motor housing 3. The brake piston 2 is located between the motor rear cover 1 and the motor housing 3. The brake piston 2, two sealing rings and the motor housing 3 form a brake oil chamber 5. The upper part of the motor rear cover 1 is connected to the housing oil chamber 4. The brake oil chamber 5 is connected to the motor rear cover 1 through an oil passage and then to the housing oil chamber 4. A throttling plug 11 is arranged in the oil passage, and a throttling hole 21 is provided on the throttling plug 11. When the oil in the brake oil chamber 5 is completely discharged into the housing oil chamber 4 through the throttling hole 21 of the throttling plug 11, the brake piston 2 will press the friction plate 8 under the action of the spring 7 force to achieve the braking effect. The size of the throttling hole 21 determines the oil leakage speed of the oil in the brake oil chamber 5 during this process, and further determines the braking response time.
[0005] One of the above two structures is to install the oil leakage throttle hole on the brake piston. In this case, if you want to adjust the brake response, you can only do so by changing the brake piston design. The other is to install a throttle plug on the machined oil channel on the joint surface of the motor housing and the motor rear cover. In this case, the brake response can be adjusted by replacing the throttle plug. However, in these two structures, if the throttle hole is blocked during vehicle application and needs to be repaired or replaced, the motor rear cover and the motor housing need to be disassembled and restored after completion. Utility Model Content
[0006] In view of the deficiencies in the prior art, an object of the embodiments of the utility model is to provide a hydraulic motor housing that is convenient for adjusting the braking response.
[0007] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:
[0008] A hydraulic motor housing for conveniently adjusting braking response, wherein the motor housing has a brake oil chamber and a housing oil chamber, and an oil inlet channel and an oil drain channel are arranged on the motor housing; the oil drain channel comprises a first oil drain channel and a second oil drain channel which are cross-connected, the first oil drain channel and the oil inlet channel are located in different radial directions of the brake oil chamber, the first oil drain channel connects the brake oil chamber and the outer wall surface of the motor housing, and a screw plug is arranged on the outer wall surface, an oil drain plug is arranged in the first oil drain channel at the intersection with the second oil drain channel in the direction close to the brake oil chamber, and one end of the second oil drain channel is connected to the housing oil chamber.
[0009] Optionally, the brake oil chamber is an annular chamber, and the first oil drain channel and the annular chamber are located on the same radial section perpendicular to the axis of the brake oil chamber.
[0010] Optionally, the first oil drain channel has a first threaded hole and a second threaded hole, the first threaded hole is located at the axial outer end of the second threaded hole, and the first threaded hole is larger than the second threaded hole, the screw plug is installed in the first threaded hole, and the oil drain plug is installed in the second threaded hole.
[0011] Optionally, the second oil drain channel and the first oil drain channel are located on the same radial section parallel to the axis of the brake oil chamber, the intersection of the second oil drain channel and the first oil drain channel is located between the screw plug and the oil drain plug, and the other end of the second oil drain channel leads to the axial end face of the motor housing.
[0012] Optionally, a countersunk hole is provided on the axial end surface of the motor housing, and the countersunk hole is located at the intersection of the second oil drain channel and the axial end surface of the motor housing for sealing.
[0013] The embodiment of the utility model further provides a hydraulic motor, comprising a motor rear cover, a brake piston and a hydraulic motor housing as described above for conveniently adjusting the brake response, wherein the brake piston is located between the motor rear cover and the motor housing.
[0014] Optionally, a first sealing ring and a second sealing ring are provided on the brake piston, and the first sealing ring and the second sealing ring are arranged along the axial direction of the brake piston and are both located between the brake piston and the motor housing. The outer wall of the brake piston, the first sealing ring, the inner hole of the motor housing and the second sealing ring form the brake oil chamber.
[0015] Optionally, the oil inlet passage includes a first oil inlet passage, a second oil inlet passage and a connecting oil passage, the first oil inlet passage and the second oil inlet passage are connected through the connecting oil passage, the first oil inlet passage is located on the motor housing and is located in a different radial direction of the same radial section as the first oil drain passage, the second oil inlet passage is located on the motor rear cover, and a portion of the connecting oil passage is located on the motor housing and a portion is located on the motor rear cover.
[0016] Optionally, the screw plug installed on the motor housing is a first screw plug, a second screw plug is provided on the second oil inlet passage of the motor rear cover, and a throttling plug is provided on the connecting oil passage.
[0017] Optionally, a spring is arranged between the brake piston and the motor rear cover, and a friction plate is arranged between the brake piston and the motor housing.
[0018] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:
[0019] When the motor housing of the utility model is braked, the oil in the brake oil chamber is leaked from the first oil leakage channel and the second oil leakage channel into the housing oil chamber through the oil leakage plug. When the oil leakage is too fast or too slow, the brake response can be adjusted by removing the screw plug and replacing the oil leakage plug (oil leakage hole diameter). By designing the brake oil chamber oil leakage channel (second oil leakage channel) on the motor housing, and adding a process oil channel (first oil channel) to install the oil leakage plug, under this structure, if you want to adjust the brake response or replace the throttle hole by changing the size of the throttle hole, you only need to remove the screw plug and take out the oil leakage plug, replace the oil leakage plug of the oil leakage hole with a different diameter, and then install the screw plug back. This process can be achieved without opening the rear cover of the motor, which is convenient and fast and not limited by the site.
[0020] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0022] Figure 1 This is a schematic diagram of a current brake throttling structure;
[0023] Figure 2 It is another schematic diagram of the current brake throttling structure;
[0024] Figure 3 is a schematic diagram of a cross section of a motor housing provided by an embodiment of the utility model;
[0025] Figure 4 is a schematic diagram of another cross section of the motor housing provided by an embodiment of the utility model;
[0026] In the figure: 1, motor rear cover; 11, throttle plug; 12, second screw plug; 13, second oil inlet passage; 2, brake piston; 21, throttle hole; 22, first sealing ring; 23, second sealing ring; 3, motor housing; 31, second oil drain passage; 32, first oil drain passage; 33, first screw plug; 34, first oil inlet passage; 4, housing oil chamber; 5, brake oil chamber; 6, oil drain plug; 7, spring; 8, friction plate;
[0027] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION
[0028] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0029] As described in the background technology, the throttle hole currently used is set on the joint surface of the brake piston or the motor rear cover. During the debugging and maintenance process, the motor rear cover needs to be completely removed. This process involves a series of operations such as disassembly and assembly of bolts, disassembly and assembly of brake springs, disassembly and assembly of sealing rings and even disassembly and assembly of brake pistons. In addition, when the whole vehicle is debugged, there is generally no suitable operating table on site, which makes the above operations more difficult and reduces the debugging efficiency. In order to solve the above technical problems, the utility model proposes a hydraulic motor housing that is convenient for adjusting the brake response.
[0030] like Figure 3 , Figure 4 As shown, the motor housing 3 has a brake oil chamber 5 and a housing oil chamber 4, and the motor housing 3 is provided with an oil inlet channel and an oil drain channel; the oil drain channel includes a first oil drain channel 32 and a second oil drain channel 31 that are cross-connected, the first oil drain channel 32 and the oil inlet channel are located in different radial directions of the brake oil chamber 5, the first oil drain channel 32 connects the brake oil chamber 5 and the outer wall surface of the motor housing 3, and a screw plug (i.e., a first screw plug 33) is provided on the outer wall surface, and an oil drain plug 6 with an oil drain hole is provided in the first oil drain channel 32 at the intersection with the second oil drain channel 31 near the direction of the brake oil chamber 5, that is, the oil drain plug 6 is installed on the radial inner side of the intersection of the two oil drain channels, and one end of the second oil drain channel 31 is connected to the housing oil chamber 4.
[0031] When the motor housing 3 of this embodiment is braked, the oil in the brake oil chamber 5 is leaked from the first oil drain passage 32 and the second oil drain passage 31 into the housing oil chamber 4 through the oil drain plug 6. When the oil drain is too fast or too slow, the oil drain plug 6 (the oil drain hole diameter) is replaced by removing the screw plug to adjust the braking response. By adding two process oil passages to the motor housing 3, the throttling structure originally designed on the internal parts is replaced by the oil drain plug 6 installed in the oil passage of the motor housing 3, thereby achieving the effect that the braking response can be adjusted by replacing the oil drain plug 6 without opening the entire hydraulic motor when the braking response is too fast or too slow.
[0032] like Figure 3 As shown, the brake oil chamber 5 is an annular chamber, and the first oil drain passage 32 and the annular chamber are located on the same radial section perpendicular to the axis of the brake oil chamber 5. That is, the first oil drain passage 32 is coplanar with the brake oil chamber 5, so the first oil drain passage 32 is a straight hole in the radial direction, rather than an inclined hole, which is convenient for processing.
[0033] The first oil drain passage 32 has a first threaded hole and a second threaded hole, the first threaded hole is located at the axial outer end of the second threaded hole, and the first threaded hole is larger than the second threaded hole, the first screw plug 33 is installed in the first threaded hole, and the oil drain plug 6 is installed in the second threaded hole. The two threaded holes of different sizes facilitate the installation and removal of the first screw plug 33 and the oil drain plug 6, making the adjustment of the brake response more convenient and quick.
[0034] The second oil drain passage 31 and the first oil drain passage 32 are located on the same radial cross section parallel to the axis of the brake oil chamber 5, and are connected to the cross direction of the first oil drain passage 32 and the second oil drain passage 31. The intersection of the second oil drain passage 31 and the first oil drain passage 32 is located between the screw plug and the oil drain plug 6, so that the oil can enter the second oil drain passage 31 only after passing through the oil drain plug 6, so that the oil drain plug 6 has a throttling effect. The other end of the second oil drain passage 31 leads to the axial end face of the motor housing 3, and the oil throttled by the oil drain plug 6 is discharged into the housing oil chamber 4.
[0035] Furthermore, a countersunk hole is provided on the axial end face of the motor housing 3, and the countersunk hole is located at the intersection of the second oil drain channel 31 and the axial end face of the motor housing 3. When the motor housing 3 and the motor rear cover 1 are assembled, sealing is achieved by installing a sealing ring in the countersunk hole to prevent oil leakage.
[0036] Based on the hydraulic motor housing 3 for conveniently adjusting the braking response, this embodiment further provides a hydraulic motor, including a motor rear cover 1, a brake piston 2 and a motor housing 3, wherein the brake piston 2 is located between the motor rear cover 1 and the motor housing 3. Figure 3As shown, the brake piston 2 is provided with a first sealing ring 22 and a second sealing ring 23, which are arranged along the axial direction of the brake piston 2 and are both located between the brake piston 2 and the motor housing 3. The outer wall of the brake piston 2, the first sealing ring 22, the inner hole of the motor housing 3 and the second sealing ring 23 form the brake oil chamber 5.
[0037] like Figure 4 As shown, the oil inlet passage includes a first oil inlet passage 34, a second oil inlet passage 13 and a connecting oil passage, the first oil inlet passage 34 and the second oil inlet passage 13 are connected through the connecting oil passage, the first oil inlet passage 34 is located on the motor housing 3, and is located in a different radial direction of the same radial section as the first oil drain passage 32, the second oil inlet passage 13 is located on the motor rear cover 1, a part of the connecting oil passage is located on the motor housing 3, and a part is located on the motor rear cover 1. The screw plug installed on the motor housing 3 is the first screw plug 33, the second screw plug 12 is provided on the second oil inlet passage 13 of the motor rear cover 1, and the connecting oil passage is provided with a throttling plug 11.
[0038] One side of the brake oil chamber 5 takes in oil from the oil inlet channel through the throttling plug 11, and the other side discharges oil from the oil drain channel through the oil drain plug 6 to the housing oil chamber 4. The diameter of the throttling hole of the oil drain plug 6 needs to be smaller than the throttling hole size of the throttling plug 11. The oil drain plug 6 is installed in the oil drain channel through threads, and the throttling plug 11 is installed in the oil inlet channel through threads, and the first screw plug 33 and the second screw plug 12 are used to seal the oil drain channel and the oil inlet channel respectively.
[0039] A spring 7 is arranged between the brake piston 2 and the motor rear cover 1, and a friction plate 8 is arranged between the brake piston 2 and the motor housing 3. When the brake is released, the high-pressure oil enters the brake oil chamber 5 through the oil inlet passage through the throttling plug 11, overcomes the spring force of the brake spring 7, pushes the brake piston 2 upward, separates the brake piston 2 from the friction plate 8, and then releases the brake. When braking, the high-pressure oil is cut off, and the oil inlet passage is no longer passed through the oil. At this time, the oil in the brake oil chamber 5 is leaked from the first oil leakage passage 32 and the second oil leakage passage 31 into the housing oil chamber 4 through the oil leakage plug 6. When the oil in the brake oil chamber 5 is completely leaked to the housing oil chamber 4, the brake piston 2 presses the friction plate 8 under the action of the spring force of the brake spring 7, thereby limiting the rotation of the rotating assembly to achieve braking. If the aperture of the oil leakage plug 6 is too large, the oil leakage speed is fast, the braking is fast, and under the current structure, the brake may not be released. However, if the aperture of the oil leakage plug 6 is too small, the oil leakage is slow, and the braking will be slow.
[0040] In this embodiment, an oil passage is added to the hydraulic motor housing 3, and the throttling structure originally designed on the internal parts is replaced with an oil drain plug 6 installed in the oil passage of the motor housing 3, thereby achieving the effect that when the braking response is too fast or too slow, there is no need to open the entire hydraulic motor, and the braking response can be adjusted by replacing the throttling hole.
[0041] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the protection scope of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.
Claims
1. A hydraulic motor housing for conveniently adjusting brake response, wherein the motor housing has a brake oil chamber and a housing oil chamber, characterized in that: The motor housing is provided with an oil inlet passage and an oil drain passage; The oil drain channel includes a first oil drain channel and a second oil drain channel that are cross-connected. The first oil drain channel and the oil inlet channel are located in different radial directions of the brake oil chamber. The first oil drain channel connects the brake oil chamber and the outer wall of the motor housing, and a screw plug is arranged on the outer wall. An oil drain plug is arranged in the first oil drain channel at the intersection with the second oil drain channel, close to the brake oil chamber. One end of the second oil drain channel is connected to the housing oil chamber.
2. The hydraulic motor housing for conveniently adjusting brake response according to claim 1, characterized in that: The brake oil chamber is an annular chamber, and the first oil drain passage and the annular chamber are located on the same radial section perpendicular to the axis of the brake oil chamber.
3. The hydraulic motor housing for conveniently adjusting brake response according to claim 2, characterized in that: The first oil drain passage has a first threaded hole and a second threaded hole, the first threaded hole is located at the axial outer end of the second threaded hole, and the first threaded hole is larger than the second threaded hole, the screw plug is installed in the first threaded hole, and the oil drain plug is installed in the second threaded hole.
4. The hydraulic motor housing for conveniently adjusting brake response according to claim 3, characterized in that: The second oil drain channel and the first oil drain channel are located on the same radial section parallel to the axis of the brake oil chamber, the intersection of the second oil drain channel and the first oil drain channel is located between the screw plug and the oil drain plug, and the other end of the second oil drain channel leads to the axial end face of the motor housing.
5. The hydraulic motor housing for conveniently adjusting brake response according to claim 4, characterized in that: The axial end surface of the motor housing is provided with a countersunk hole, and the countersunk hole is located at the intersection of the second oil drain passage and the axial end surface of the motor housing, and is used for sealing.
6. A hydraulic motor, characterized in that: It comprises a motor rear cover, a brake piston and a hydraulic motor housing for conveniently adjusting the brake response as described in any one of claims 1 to 5, wherein the brake piston is located between the motor rear cover and the motor housing.
7. The hydraulic motor according to claim 6, characterized in that: The brake piston is provided with a first sealing ring and a second sealing ring, which are arranged along the axial direction of the brake piston and are both located between the brake piston and the motor housing. The outer wall of the brake piston, the first sealing ring, the inner hole of the motor housing and the second sealing ring form the brake oil chamber.
8. The hydraulic motor according to claim 6, characterized in that: The oil inlet passage includes a first oil inlet passage, a second oil inlet passage and a connecting oil passage, the first oil inlet passage and the second oil inlet passage are connected through the connecting oil passage, the first oil inlet passage is located on the motor housing, and is located in a different radial direction of the same radial cross-section as the first oil drain passage, the second oil inlet passage is located on the motor rear cover, and a portion of the connecting oil passage is located on the motor housing, and a portion is located on the motor rear cover.
9. The hydraulic motor according to claim 8, characterized in that The screw plug installed on the motor housing is a first screw plug, the second oil inlet passage of the motor rear cover is provided with a second screw plug, and the connecting oil passage is provided with a throttling plug.
10. The hydraulic motor according to claim 6, characterized in that A spring is arranged between the brake piston and the motor rear cover, and a friction plate is arranged between the brake piston and the motor housing.