CN210318255U - Drum brake structure - Google Patents
Drum brake structure Download PDFInfo
- Publication number
- CN210318255U CN210318255U CN201920993868.4U CN201920993868U CN210318255U CN 210318255 U CN210318255 U CN 210318255U CN 201920993868 U CN201920993868 U CN 201920993868U CN 210318255 U CN210318255 U CN 210318255U
- Authority
- CN
- China
- Prior art keywords
- brake shoes
- brake
- air bags
- driving body
- extension shafts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a drum brake structure, which comprises brake shoes, reset springs, a driving body and a mounting block, wherein the tail end of one side of each brake shoe is hinged on the mounting block, the tail ends of the other sides of the two brake shoes are correspondingly hinged on two free ends of the driving body respectively, the two reset springs are arranged between the two brake shoes in parallel, and the two ends of each reset spring are fixedly connected on the two brake shoes; the driving body comprises a shell, air bags and extension shafts, the two extension shafts are inserted at two ends of the shell, the inner ends of the two extension shafts are fixed on the air bags, the air bags are arranged in the shell, and the air bags are inflated and deflated to realize the telescopic motion of the two extension shafts. The utility model discloses simple structure, control is convenient, excellent in use effect.
Description
The technical field is as follows:
the utility model relates to a drum brake structure.
Background art:
the brake shoe in the existing drum brake generally realizes the rotation of the brake shoe through a rotating shaft, and has complex structure and high manufacturing cost. Therefore, there is a need to improve the prior art to overcome the deficiencies of the prior art.
The utility model has the following contents:
the utility model provides a solve the problem that above-mentioned prior art exists and provide a drum brake structure.
The utility model discloses the technical scheme who adopts has: a drum brake structure comprises brake shoes, reset springs, a driving body and a mounting block, wherein the tail ends of one side of each of the two brake shoes are hinged to the mounting block, the tail ends of the other side of each of the two brake shoes are correspondingly hinged to two free ends of the driving body respectively, the two reset springs are arranged between the two brake shoes in parallel, and two ends of each reset spring are fixedly connected to the two brake shoes;
the driving body comprises a shell, air bags and extension shafts, the two extension shafts are inserted at two ends of the shell, the inner ends of the two extension shafts are fixed on the air bags, the air bags are arranged in the shell, and the air bags are inflated and deflated to realize the telescopic motion of the two extension shafts.
Furthermore, the air bag is made of rubber materials, an air inlet and an air outlet are formed in the air bag, and an electromagnetic valve is arranged on the air outlet.
The utility model discloses following beneficial effect has: the utility model discloses simple structure, control is convenient, excellent in use effect.
Description of the drawings:
fig. 1 is a structural diagram of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a drum brake structure, including brake shoe 1, reset spring 2, driving body 3 and installation piece 4, one side end of two brake shoes 1 all articulates on installation piece 4, and the opposite side end of two brake shoes 1 corresponds respectively and articulates two free ends at driving body 3, and two reset spring 2 are parallel to each other and locate between two brake shoes 1, and every reset spring 2's both ends fixed connection is on two brake shoes 1.
The utility model provides a driving body 3 includes casing, gasbag and projecting shaft 31, and two projecting shafts peg graft in the both ends of casing, and on the inboard end of two projecting shafts was fixed in the gasbag, inside the casing was arranged in to the gasbag, the gasbag filled the gassing and realized the concertina movement of two projecting shafts. The air bag is made of rubber materials, an air inlet and an air outlet are arranged on the air bag, and an electromagnetic valve is arranged on the air outlet.
When in use, the air inlet of the air bag is connected with an inflator pump, and the air bag is inflated to drive the extension shaft 31 to extend. When in deflation, the control electromagnetic valve is opened and the exhaust port is opened for deflation, and the air bag contracts to enable the extension shaft to retract.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (2)
1. A drum brake construction characterized by: the brake comprises brake shoes (1), reset springs (2), a driving body (3) and mounting blocks (4), wherein the tail ends of one sides of the two brake shoes (1) are hinged to the mounting blocks (4), the tail ends of the other sides of the two brake shoes (1) are correspondingly hinged to two free ends of the driving body (3) respectively, the two reset springs (2) are arranged between the two brake shoes (1) in parallel, and two ends of each reset spring (2) are fixedly connected to the two brake shoes (1); the driving body (3) comprises a shell, air bags and extension shafts (31), the two extension shafts are inserted at two ends of the shell, the tail ends of the inner sides of the two extension shafts are fixed on the air bags, the air bags are arranged in the shell, and the air bags are inflated and deflated to realize the telescopic motion of the two extension shafts.
2. A drum brake arrangement according to claim 1, wherein: the air bag is made of rubber materials, an air inlet and an air outlet are formed in the air bag, and an electromagnetic valve is arranged on the air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920993868.4U CN210318255U (en) | 2019-06-28 | 2019-06-28 | Drum brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920993868.4U CN210318255U (en) | 2019-06-28 | 2019-06-28 | Drum brake structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318255U true CN210318255U (en) | 2020-04-14 |
Family
ID=70147304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920993868.4U Expired - Fee Related CN210318255U (en) | 2019-06-28 | 2019-06-28 | Drum brake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318255U (en) |
-
2019
- 2019-06-28 CN CN201920993868.4U patent/CN210318255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |