CN221503830U - Wet brake structure and axle - Google Patents
Wet brake structure and axle Download PDFInfo
- Publication number
- CN221503830U CN221503830U CN202323316670.8U CN202323316670U CN221503830U CN 221503830 U CN221503830 U CN 221503830U CN 202323316670 U CN202323316670 U CN 202323316670U CN 221503830 U CN221503830 U CN 221503830U
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- brake
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- 230000000903 blocking effect Effects 0.000 claims abstract description 27
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Braking Arrangements (AREA)
Abstract
The utility model discloses a wet brake structure and an axle, wherein the wet brake structure comprises a brake shell arranged on the axle, a friction plate assembly, a piston and a return assembly, wherein the friction plate assembly, the piston and the return assembly are arranged in the brake shell; the utility model focuses on: the return assembly is arranged in the piston and comprises a positioning column and a return shell which are fixedly connected with the brake shell, the return shell is arranged on one side of the positioning column and comprises a main body part fixedly connected with the brake shell, the main body part outwards extends to form a blocking part between the friction plate assembly and the end face of the positioning column, the positioning column is further sleeved with a spring, and two ends of the spring are respectively propped against the piston and the blocking part. When the brake is released, the spring returns under the guide of the positioning column and pushes the piston to return, so that the piston is separated from the friction plate, and the spring can maintain a correct movement track due to the correct guide of the positioning column in the return process, thereby improving the positioning precision and preventing the spring from deforming due to inclination.
Description
Technical Field
The utility model relates to the technical field of automobile brakes, in particular to a wet brake structure and an axle.
Background
The wet brake of the existing engineering mechanical axle comprises a spline, a friction plate, a piston and a spring, wherein the brake shell is arranged in the brake shell, the friction plate is matched with the spline, the piston is located on the outer side of the friction plate and is provided with an accommodating cavity, the end face of the outer end of the piston is inwards provided with a connecting hole communicated to the accommodating cavity, the connecting hole is in clearance fit with a bolt, the outer end of the bolt outwards extends out of the connecting hole and is in threaded connection with the outer end of the brake shell, the inner end of the bolt stretches into the accommodating cavity and inwards extends, the inner end of the bolt is further sleeved with the spring, two ends of the spring respectively abut against the heads of the piston and the bolt, and when the wet brake brakes, the piston moves towards the friction plate to compress the friction plate, so that braking is achieved. However, the spring of the wet brake is easily deformed, resulting in a short service life.
Disclosure of utility model
In view of the shortcomings of the prior art, the utility model aims to provide a wet brake structure and an axle, which can prevent a spring from being deformed due to inclination in the use process by improving positioning accuracy.
In order to achieve the above purpose, the embodiment of the present utility model adopts the following technical scheme:
the wet brake structure is arranged on an axle and comprises a brake shell arranged on the axle, a friction plate assembly, a piston and a return assembly, wherein the friction plate assembly, the piston and the return assembly are arranged in the brake shell;
the piston is positioned on one side of the friction plate assembly;
The return assembly is arranged in the piston and comprises a positioning column and a return shell which are fixedly connected with the brake shell, the positioning column extends towards the friction plate assembly, the return shell is arranged on one side of the positioning column and comprises a main body part fixedly connected with the brake shell, the main body part extends outwards to form a blocking part positioned between the friction plate assembly and the end face of the positioning column, the positioning column is further sleeved with a spring, and two ends of the spring are respectively propped against the piston and the blocking part.
Further, the main body portion extends outward in the axial direction of the axle to form an extension portion, and a free end of the extension portion extends in the radial direction of the axle and toward an inner peripheral wall of the piston to form the stopper portion.
Further, the main body part is annular, the locating columns are a plurality of locating pins, the locating columns are distributed along the circumferential direction of the main body part, the blocking parts are a plurality of, one blocking part corresponds to one locating column and is attached to the locating column.
Further, the inner end of the sun gear shaft of the axle stretches into the brake housing and is provided with a spline, the friction plate assembly is matched with the spline, the piston is located on the inner side of the friction plate assembly, and the return housing is sleeved on the inner end of the sun gear shaft.
Further, the blocking part is located at the outer side of the main body part, the inner side of the main body part integrally extends inwards along the axial direction of the axle to form a sleeve, and the inner peripheral wall and the outer peripheral wall of the sleeve are respectively in clearance fit with the inner end of the sun gear shaft and the brake shell.
Further, the inner end of the sun gear shaft is provided with an inner end face, the inner peripheral wall of the inner end of the sleeve integrally protrudes inwards to form an annular limiting part, the limiting part is blocked at the inner side of the inner end face, and the projection of the sun gear shaft is located in the projection of the limiting part when seen towards the axial direction of the sun gear shaft.
Further, the inner peripheral wall of the piston protrudes inwards along the radial direction to form a plurality of positioning parts, the positioning parts are distributed along the circumferential direction of the piston, a plurality of positioning columns are arranged, one positioning column corresponds to one positioning part, the positioning column penetrates through the positioning part to be fixedly connected with the inner end of the brake shell, a plurality of blocking parts are arranged, and one blocking part corresponds to one positioning column.
Further, a groove is concavely formed in the outer side wall of each positioning portion, and the inner end of the spring extends into the groove and abuts against the bottom wall of the groove.
Further, the return assembly comprises a cushion block located between the locating part and the inner end inner wall of the brake shell and a locating pin located between the two blocking parts, the cushion block is sleeved on the main body part, the outer end face and the inner end face of the cushion block are respectively tightly attached to the inner side wall of the locating part and the inner end inner wall of the brake shell, two locating pins are respectively located on two opposite sides of the main body part, and the locating pin penetrates through the main body part and the cushion block and is in threaded connection with the inner end of the brake shell.
According to the wet brake structure, the positioning column and the return shell are fixedly connected with the brake shell, the main body part of the return shell extends outwards to form the blocking part between the friction plate assembly and the end face of the positioning column, the spring is sleeved on the positioning column, two ends of the spring are respectively abutted against the piston and the blocking part, when the brake is released, the spring returns under the guide of the positioning column and pushes the piston to return, so that the piston is separated from the friction plate, and due to the fact that the spring has correct guide of the positioning column in the return process, the correct movement track can be kept, positioning accuracy is improved, and deformation of the spring due to inclination can be prevented. The wet brake structure has the characteristics of high positioning precision and simple structure.
The embodiment of the utility model also provides an axle, which comprises the wet brake structure of any embodiment.
Drawings
FIG. 1 is a partially exploded perspective view of a wet brake structure according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of the assembled state of FIG. 1;
Fig. 3 is an enlarged view of a portion a of fig. 2.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description:
As shown in fig. 1 to 3, an embodiment of the present utility model provides a wet brake structure, which is mounted on an axle 100 of a construction machine, and includes a brake housing 1 provided on the axle 100, and a friction plate assembly 2, a piston 3 and a return assembly 4 mounted in the brake housing 1.
In the present embodiment, the brake housing 1 is provided at an end portion of an axle housing (not numbered) of the axle 100 and is integrally formed with the axle housing. The piston 3 is located at one side of the friction plate assembly 2, and in particular, the piston 3 is located at the inner side of the friction plate assembly 2. The inner peripheral wall of the piston 3 protrudes inwards along the radial direction to form a plurality of positioning portions 31, the positioning portions 31 are distributed along the circumferential direction of the piston 3, in this embodiment, 4 positioning portions 31 are uniformly distributed along the circumferential direction of the piston 3, and a groove 311 for limiting is concavely arranged on the outer side wall of the free end of each positioning portion 31.
The return assembly 4 is arranged in the piston 3 and comprises a positioning column 41 and a return shell 42 which are fixedly connected with the brake shell 1. The positioning columns 41 penetrate through the positioning portion 31 to be fixedly connected with the inner end of the brake housing 1, the positioning columns 41 are multiple, the positioning columns 41 are uniformly distributed along the circumferential direction of the main body portion 421, the positioning columns 41 extend towards the friction plate assembly 2, specifically, the positioning columns 41 are positioning pins, the number of the positioning columns is 4, and one positioning column 41 corresponds to one positioning portion 31. The return shell 42 is positioned at one side of the positioning column 41 and comprises a main body part 421 fixedly connected with the brake shell 1, the main body part 421 is annular, the main body part 421 extends along the direction close to the positioning column 41 to form a plurality of blocking parts 422 positioned between the friction plate assembly 2 and the end surface of the positioning column 41, and one blocking part 422 corresponds to one positioning column 41 and is attached to the other blocking part 422; specifically, in order to save installation space while securing structural strength, the body portion 421 is extended outwardly in the axial direction of the axle 100 to form the extension portion 423, and the free end of the extension portion 423 is extended in the radial direction of the axle 100 and toward the inner peripheral wall of the piston 3 to form the stopper 422. The positioning column 41 is further sleeved with a spring 43, two ends of the spring 43 respectively support against the piston 3 and the blocking part 422, specifically, the inner end of the spring 43 stretches into the groove 311 and supports against the bottom wall of the groove 311, when the brake is released, the spring 43 returns under the guide of the positioning column 41 and pushes the piston 3 to return, so that the piston 3 is separated from the friction plate, and the spring 43 has the correct guide of the positioning column 41 in the return process, so that the correct movement track can be maintained, the positioning accuracy is improved, and the spring 43 can be prevented from being deformed due to inclination.
In this embodiment, the inner end of the sun gear shaft 5 of the axle 100 extends into the brake housing 1, the inner end of the sun gear shaft 5 extends inward along the axial direction of the axle 100 and is provided with a spline (not numbered), the spline is integrally formed with the sun gear of the axle, the friction plate assembly 2 is matched with the spline, and the return housing 42 is sleeved on the inner end of the sun gear shaft 5. Specifically, the blocking portion 422 is located at the outer side of the main body 421, the inner side of the main body 421 extends inward along the axial direction of the axle 100 to form a sleeve 424, the inner and outer peripheral walls of the sleeve 424 are respectively in clearance fit with the inner end of the sun gear shaft 5 and the brake housing 1, and the sleeve 424 has a supporting function on the sun gear, so that an additional bushing is not required to be arranged between the sun gear shaft and the brake housing 1, not only the structural strength is enhanced, but also the structural simplification can be realized.
More specifically, the inner end of the sun gear shaft 5 has an inner end surface 51, the inner peripheral wall of the inner end of the sleeve 424 integrally protrudes inwards to form an annular limiting portion 4241, the limiting portion 4241 is blocked at the inner side of the inner end surface 51, and the projection of the sun gear shaft 5 is located in the projection of the limiting portion 4241 when seen towards the axial direction of the sun gear shaft 5. The limiting portion 4241 is designed to limit the sun gear shaft 5 in the axial direction.
The return assembly 4 further comprises a cushion block 44 positioned between the positioning portion 31 and the inner end wall of the inner end of the brake shell 1, wherein the cushion block 44 is sleeved on the main body portion 421, and the outer end surface and the inner end surface of the cushion block are respectively tightly attached to the inner side wall of the positioning portion 31 and the inner end wall of the inner end of the brake shell 1. The return assembly 4 further comprises two positioning pins 45 located between the two blocking portions 422, wherein the two positioning pins 45 are located on two opposite sides of the main body portion 421, and the positioning pins 45 penetrate through the main body portion 421 and the cushion block 44 and are in threaded connection with the inner end of the brake housing 1 so as to fix the return housing 42 in the brake housing 1.
According to the wet brake structure, the positioning column and the return shell are fixedly connected with the brake shell, the main body part of the return shell extends outwards to form the blocking part between the friction plate assembly and the end face of the positioning column, the spring is sleeved on the positioning column, two ends of the spring are respectively abutted against the piston and the blocking part, when the brake is released, the spring returns under the guide of the positioning column and pushes the piston to return, so that the piston is separated from the friction plate, and due to the fact that the spring has correct guide of the positioning column in the return process, the correct movement track can be kept, positioning accuracy is improved, and deformation of the spring due to inclination can be prevented. The wet brake structure has the characteristics of high positioning precision and simple structure.
The embodiment of the present utility model further provides an axle 100, which includes the wet brake structure described in any one of the embodiments above, and in this embodiment, the axle 100 is a loader axle.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model in essence.
Claims (10)
1. The wet brake structure is arranged on an axle and is characterized by comprising a brake shell arranged on the axle, a friction plate assembly, a piston and a return assembly, wherein the friction plate assembly, the piston and the return assembly are arranged in the brake shell;
the piston is positioned on one side of the friction plate assembly;
The return assembly is arranged in the piston and comprises a positioning column and a return shell which are fixedly connected with the brake shell, the positioning column extends towards the friction plate assembly, the return shell is arranged on one side of the positioning column and comprises a main body part fixedly connected with the brake shell, the main body part extends outwards to form a blocking part positioned between the friction plate assembly and the end face of the positioning column, the positioning column is further sleeved with a spring, and two ends of the spring are respectively propped against the piston and the blocking part.
2. A wet brake structure as defined in claim 1, wherein said main body portion extends outwardly in an axial direction of said axle to form an extension, a free end of said extension extending radially of said axle and toward an inner peripheral wall of said piston to form said stop.
3. The wet brake structure of claim 1, wherein the main body is annular, the plurality of positioning posts are positioning pins, the plurality of positioning posts are distributed along the circumferential direction of the main body, the plurality of blocking portions are provided, and one blocking portion corresponds to one positioning post and is attached to the positioning post.
4. A wet brake structure as claimed in claim 1 wherein the sun gear shaft inner end of the axle extends into the brake housing and is provided with splines, the friction plate assembly is engaged with the splines, the piston is located inside the friction plate assembly, and the return housing is sleeved on the sun gear shaft inner end.
5. A wet brake structure as defined in claim 4, wherein said stop portion is located on the outside of said main body portion, the inside of said main body portion integrally extending inwardly in the axial direction of said axle to form a sleeve, the inner and outer peripheral walls of said sleeve being in clearance fit with said sun gear shaft inner end and said brake housing, respectively.
6. The wet brake structure of claim 5, wherein the inner end of the sun gear shaft has an inner end surface, the inner peripheral wall of the inner end of the sleeve integrally protrudes inward to form an annular limiting portion, the limiting portion is blocked at the inner side of the inner end surface, and the projection of the sun gear shaft is located in the projection of the limiting portion when seen in the axial direction of the sun gear shaft.
7. A wet brake structure as defined in claim 1, wherein said piston has an inner peripheral wall projecting radially inwardly thereof to form a plurality of positioning portions, said plurality of positioning portions being distributed circumferentially of said piston, said plurality of positioning posts, one of said positioning posts corresponding to one of said positioning portions, said positioning post passing through said positioning portion to be fixedly connected with an inner end of said brake housing, said plurality of blocking portions, one of said blocking portions corresponding to one of said positioning posts.
8. A wet brake structure as defined in claim 7, wherein an outer side wall of each positioning portion is concavely provided with a groove, and an inner end of the spring extends into the groove and abuts against a bottom wall of the groove.
9. A wet brake structure as defined in claim 7, wherein said return assembly comprises a spacer block located between said positioning portion and an inner end inner wall of said brake housing and a positioning pin located between said two blocking portions, said spacer block being fitted over said main body portion and having its outer and inner end surfaces respectively in close contact with an inner side wall of said positioning portion and an inner end inner wall of said brake housing, said positioning pins being two, two of said positioning pins being located on opposite sides of said main body portion respectively, said positioning pin passing through said main body portion and said spacer block and being threadedly connected with said inner end of said brake housing.
10. Axle, characterized by comprising a wet brake structure according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323316670.8U CN221503830U (en) | 2023-12-06 | 2023-12-06 | Wet brake structure and axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323316670.8U CN221503830U (en) | 2023-12-06 | 2023-12-06 | Wet brake structure and axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221503830U true CN221503830U (en) | 2024-08-09 |
Family
ID=92133375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323316670.8U Active CN221503830U (en) | 2023-12-06 | 2023-12-06 | Wet brake structure and axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221503830U (en) |
-
2023
- 2023-12-06 CN CN202323316670.8U patent/CN221503830U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |