CN210318254U - Pneumatic drum brake - Google Patents
Pneumatic drum brake Download PDFInfo
- Publication number
- CN210318254U CN210318254U CN201920993867.XU CN201920993867U CN210318254U CN 210318254 U CN210318254 U CN 210318254U CN 201920993867 U CN201920993867 U CN 201920993867U CN 210318254 U CN210318254 U CN 210318254U
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- brake
- driving
- drive
- block
- driving block
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Abstract
The utility model discloses an air pressure drum brake, including mount pad, brake shoe, drive block and drive shaft, two one side end of brake shoe articulates on the mount pad, is formed with the drive clearance between two brake shoe opposite side ends, and the drive block is arranged in the drive clearance, and the drive shaft rotates through the bearing and connects on the mount pad, and the end of drive shaft passes the mount pad and with drive block fixed connection; the driving block comprises a body, wherein two ends of the body are respectively provided with an arc groove, the tail end of one side of each brake shoe is provided with a roller, the outer walls of the rollers on the two brake shoes are correspondingly attached to the arc surfaces of the two arc grooves, and when the brake shoes are driven to rotate by the driving shaft, the arc grooves of the roller attachment driving block rotate. The utility model discloses an arc groove and gyro wheel complex structure avoid the rigid contact between the structure, and reducing wear improves the life of structure.
Description
The technical field is as follows:
the utility model relates to an atmospheric pressure drum brake.
Background art:
in the existing pneumatic drum brake as shown in fig. 6, a driving block 3 is connected with a driving shaft, the driving block 3 is arranged between two brake shoes 2, when the pneumatic drum brake is used, the driving shaft rotates and drives the driving block 3 to rotate together, and the driving block 3 rotates to enable the two brake shoes 2 to rotate outwards and realize braking action. When the structure is used, the driving block 3 is in rigid contact with the brake shoe 2, and when the structure is rotated, the driving block 3 and the brake shoe 2 are abraded greatly, so that the driving block 3 and the brake shoe 2 are abraded after long-term use, and the service life of parts is influenced.
The utility model has the following contents:
the utility model provides a solve the problem that above-mentioned prior art exists and provide an atmospheric pressure drum brake.
The utility model discloses the technical scheme who adopts has: a pneumatic drum brake comprises a mounting seat, brake shoes, a driving block and a driving shaft, wherein the tail ends of one side of each of the two brake shoes are hinged to the mounting seat, a driving gap is formed between the tail ends of the other side of each of the two brake shoes, the driving block is arranged in the driving gap, the driving shaft is rotatably connected to the mounting seat through a bearing, and the tail end of the driving shaft penetrates through the mounting seat and is fixedly connected with the driving block; the driving block comprises a body, wherein two ends of the body are respectively provided with an arc groove, the tail end of one side of each brake shoe is provided with a roller, the outer walls of the rollers on the two brake shoes are correspondingly attached to the arc surfaces of the two arc grooves, and when the brake shoes are driven to rotate by the driving shaft, the arc grooves of the roller attachment driving block rotate.
Further, the center of body department is equipped with the shaft hole, and the drive shaft is installed in the shaft hole with interference fit's mode.
Further, the driving block is made of high manganese steel.
The utility model discloses following beneficial effect has: the utility model discloses an arc groove and gyro wheel complex structure avoid the rigid contact between the structure, and reducing wear improves the life of structure.
Description of the drawings:
fig. 1 and fig. 2 are the structure diagrams of the present invention.
Fig. 3 is a structural diagram of the driving block of the present invention.
Fig. 4 is a structure diagram of the cooperation between the middle roller and the driving block of the present invention.
Fig. 5 is an application structure diagram of the present invention.
Fig. 6 is a structural view of a pneumatic drum brake in the related art.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
As fig. 1 to 5, the utility model relates to an atmospheric pressure drum brake, including mount pad 1, brake shoe 2, drive block 3 and drive shaft 4, one side end of two brake shoes 2 articulates on mount pad 1, is formed with drive clearance 20 between 2 opposite side ends of two brake shoes, and in drive clearance 20 was arranged in to drive block 3, drive shaft 4 passed through the bearing and rotated and is connected on mount pad 1, and drive shaft 4's end pass mount pad 1 and with drive block 3 fixed connection.
The utility model provides a drive block 3 includes a body 31, and the both ends of body 31 all are equipped with an arc groove 32, are equipped with gyro wheel 21 at one side end of brake shoe 2, and on two brake shoes 2 went up the outer wall correspondence of gyro wheel 21 and laminate in the arc surface of two arc grooves 32, when drive shaft 4 drive brake shoe 2 rotated, the arc groove 32 of gyro wheel 21 laminating drive block 3 rotated.
The utility model discloses an arc groove and gyro wheel complex structure avoid the rigid contact between the structure, and reducing wear improves the life of structure.
A shaft hole 30 is provided at the center of the body 31, and the drive shaft 4 is fitted in the shaft hole 30 in an interference fit manner.
The driving block 3 in the utility model is made of high manganese steel, and has wear-resistant material and long service life.
The other structures in the pneumatic drum brake of the utility model are the same as those of the pneumatic drum brake (figure 6) in the prior art, and the spring structure for resetting is saved in the figure.
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 (3)
1. A pneumatic drum brake characterized by: the brake block driving mechanism comprises a mounting seat (1), brake shoes (2), a driving block (3) and a driving shaft (4), wherein the tail ends of one sides of the two brake shoes (2) are hinged to the mounting seat (1), a driving gap (20) is formed between the tail ends of the other sides of the two brake shoes (2), the driving block (3) is arranged in the driving gap (20), the driving shaft (4) is rotatably connected to the mounting seat (1) through a bearing, and the tail end of the driving shaft (4) penetrates through the mounting seat (1) and is fixedly connected with the driving block (3); the driving block (3) comprises a body (31), wherein two ends of the body (31) are respectively provided with an arc groove (32), a roller (21) is arranged at the tail end of one side of each brake shoe (2), the outer wall of each roller (21) on each brake shoe (2) is correspondingly attached to the arc surface of each arc groove (32), and when the drive brake shoes (2) are driven by a drive shaft (4), the arc grooves (32) of the roller (21) attached driving block (3) rotate.
2. A pneumatic drum brake according to claim 1, wherein: the center of body (31) is equipped with shaft hole (30), and drive shaft (4) are installed in shaft hole (30) with interference fit's mode.
3. A pneumatic drum brake according to claim 1, wherein: the driving block (3) is made of high manganese steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920993867.XU CN210318254U (en) | 2019-06-28 | 2019-06-28 | Pneumatic drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920993867.XU CN210318254U (en) | 2019-06-28 | 2019-06-28 | Pneumatic drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318254U true CN210318254U (en) | 2020-04-14 |
Family
ID=70147249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920993867.XU Active CN210318254U (en) | 2019-06-28 | 2019-06-28 | Pneumatic drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318254U (en) |
-
2019
- 2019-06-28 CN CN201920993867.XU patent/CN210318254U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |