CN207916822U - Trailer car shaft with self energizing effort floating brake apparatus - Google Patents
Trailer car shaft with self energizing effort floating brake apparatus Download PDFInfo
- Publication number
- CN207916822U CN207916822U CN201721318513.2U CN201721318513U CN207916822U CN 207916822 U CN207916822 U CN 207916822U CN 201721318513 U CN201721318513 U CN 201721318513U CN 207916822 U CN207916822 U CN 207916822U
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- CN
- China
- Prior art keywords
- brake
- drum
- pin hole
- pin
- shoe
- 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
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Abstract
A kind of Trailer car shaft with self energizing effort floating brake apparatus, including axis body, axis body is equipped with drum brake, drum brake includes brake drum, supporting plate in brake drum, supporting plate is fixed on axis body, a pair on supporting plate carries the brake-shoe of friction facing, one end of brake-shoe is connected with supporting pin, supporting pin is inserted in the pin hole on supporting plate, the pin hole is strip shaped pin hole, supporting pin can be moved radially along the length direction of pin hole, the length direction of pin hole is with brake-shoe because the movement tendency of the wedging brake drum generated by the active force in the tangent to periphery direction of brake drum is mutually complied with, so that supporting pin can move radially under this movement tendency along the length direction of pin hole.The Trailer car shaft can make brake-shoe enhance the extruding force of brake drum, enhance the brake force of drum brake, and while increasing brake force, also the effect of automatic aligning, and friction facing is worn evenly, more robust.
Description
Technical field
The utility model is related to Trailer car shafts, more particularly to are equipped with the Trailer car shaft of drum brake.
Background technology
The drum brake that Trailer car shaft is assembled includes brake drum, and the supporting plate being located in brake drum, supporting plate is fixed
On axis body, a pair carries the brake-shoe of friction facing, and one end of brake-shoe is connected with supporting pin, and supporting pin is inserted in supporting plate
In pin hole, the other end of brake-shoe is resisted against in actuating device, drives two pieces of brake-shoes to turn outward around supporting pin by actuating device
It moves and presses against on the inner cylinder face of brake drum, to generate brake force.However, this drum that existing Trailer car shaft is assembled
Formula brake, which often exists, brakes hypodynamic problem.Although the driving force for increasing actuating device is most direct solution,
But technology is more demanding, and can dramatically increase the cost of drum brake.
Utility model content
The purpose of this utility model is to provide a kind of Trailer car shaft with self energizing effort floating brake apparatus, to enhance axle
Brake force.
The utility model is realized in this way：Trailer car shaft with self energizing effort floating brake apparatus, including axis body, axis body dress
Equipped with drum brake, drum brake includes brake drum, and the supporting plate being located in brake drum, supporting plate is fixed on axis body,
A pair on supporting plate carries the brake-shoe of friction facing, and one end of brake-shoe is connected with supporting pin, and supporting pin is inserted in
In pin hole on supporting plate, the other end of brake-shoe is resisted against in actuating device, drives two pieces of brake-shoes around branch by actuating device
Support pin is turned out and presses against on the inner cylinder face of brake drum, return spring is connected between two pieces of brake-shoes, by return
Two pieces of brake-shoes of opening are retracted original position by spring, and the pin hole is strip shaped pin hole, and the supporting pin can be along the length of pin hole
Degree direction moves radially, and the length direction of pin hole and brake-shoe by the active force in the tangent to periphery direction of brake drum because of being produced
The movement tendency of raw wedging brake drum is mutually complied with so that supporting pin can be under this movement tendency along the length direction of pin hole
It moves radially.
The second return spring, the second return bullet are connected between two pieces of brake-shoes in one of the embodiments,
Link position of the spring on the brake-shoe is close to the supporting pin.
In one of the embodiments, in the position where the pin hole, the supporting plate global formation has open tubular column, empty
Tightly embedding in stem there are one bushings, and the pin hole is the through-hole being opened on the bushing.
The beneficial effects of the utility model are：The Trailer car shaft with self energizing effort floating brake apparatus, utilizes braking
Activity surplus of the supporting pin of hoof in strip shaped pin hole, enhances the brake force of drum brake.Its principle is to work as brake-shoe
Friction facing and brake drum when contacting, the active force that brake drum generates brake-shoe in tangent to periphery direction can make brake-shoe
Naturally a kind of movement tendency of wedging brake drum is generated, and the length direction of strip shaped pin hole is mutually complied with this movement tendency,
Supporting pin can move under this movement tendency along the length direction of strip pin hole, and brake-shoe wedges brake drum as a result,
Movement tendency is put to good use, so that brake-shoe is additionally enhanced the extruding force of brake drum, is played the role of self energizing effort, to increase
The strong brake force of drum brake.In addition, the Trailer car shaft with self energizing effort floating brake apparatus also has another aspect
Technique effect：Under the drive of frictional force and boosting function, to reach stress balance again, brake-shoe necessarily self is adjusted to most
It is suitble to the position of brake drum inner cylinder face, friction facing and brake drum inner cylinder face more comprehensively to contact, realizes automatic aligning, increases
While brake force, friction facing is worn evenly, more robust.
Description of the drawings
Fig. 1 is the structural schematic diagram of one specific embodiment of the utility model；
Fig. 2 is the axis body of axle and the schematic diagram that supporting plate is connect；
Fig. 3 is the brake apparatus schematic diagram seen from the end face of axle；
The separately shown supporting plates of Fig. 4；
Fig. 5 is the stereogram of supporting plate；
Fig. 6 is the stereogram for the bushing for constituting pin hole.
Specific implementation mode
Referring also to Fig. 1 to Fig. 5, the Trailer car shaft with self energizing effort floating brake apparatus, including axis body 11, axis body 11 assemble
It includes brake drum 1 to have drum brake, drum brake, and brake drum 1 is mounted on wheel, rotates together, braking with wheel
Supporting plate 2 is equipped in drum 1, supporting plate 2 is fixed on axis body 11.A pair of system for carrying friction facing is installed on supporting plate 2
Dynamic hoof 3.One end of brake-shoe 3 is connected with supporting pin 4, and supporting pin 4 is inserted in the pin hole 5 on supporting plate 2, brake-shoe 3 it is another
End is resisted against in actuating device 6, is driven two pieces of brake-shoes 3 to be turned out around supporting pin 4 by actuating device 6 and is pressed against brake drum
On 1 inner cylinder face.The actuating device 6 of diagram is cam-type actuating device, when cam rotates, can drive two pieces of brake-shoes 3
It is turned out around supporting pin 4.It is understood that actuating device can also be hydraulic wheel cylinder or wedge.Two pieces of brake-shoes 3 it
Between be connected with return spring 7, two pieces of brake-shoes 3 of opening are retracted into original position by return spring 7.
Pin hole 5 on supporting plate 2 is strip shaped pin hole, and the supporting pin 4 that brake-shoe 3 is connected can be along the length of pin hole 5
Direction moves radially.Two chain-dotted lines AA, BB in Fig. 4 express the length direction of two pin holes 5, the braking in Fig. 3 respectively
The direction of rotation of drum 1 is counterclockwise.The length direction of pin hole 5 is with brake-shoe 3 because of the tangent to periphery side by brake drum 1
To active force and the movement tendency of wedging brake drum that generates mutually comply with so that the supporting pin 4 of brake-shoe 3 can be in this movement
It is moved radially along the length direction of pin hole 5 under trend, the action opened to both sides to make brake-shoe 3 generate.The length of pin hole 5
The specific angle in direction is spent depending on the position of the size of supporting plate 2 and pin hole 5, can be measured according to experiment, as long as 5 energy of pin hole
Supporting pin 4 is allowed to be moved radially along the length direction of pin hole 5 under the movement tendency, to make brake-shoe 3 generate to both sides
The action of opening is exactly a suitable angle.
As a further improvement, being connected with the second return spring 8 between two pieces of brake-shoes 3, the second return spring 8 is being made
Link position on dynamic hoof 3 is close to supporting pin 4.Second return spring 8 strengthens the effect of 3 return of brake-shoe.
As preferred forms, the position where pin hole 5,2 global formation of supporting plate has an open tubular column 9, in open tubular column 9
Tightly embedding there are one bushings 10 shown in fig. 6, and pin hole 5 is the through-hole being opened on bushing 10.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (3)
1. the Trailer car shaft with self energizing effort floating brake apparatus, including axis body, axis body is equipped with drum brake, drum brake
Including brake drum, the supporting plate being located in brake drum, supporting plate is fixed on axis body, and a pair on supporting plate is carried and rubbed
Wipe the brake-shoe of liner, one end of brake-shoe is connected with supporting pin, and supporting pin is inserted in the pin hole on supporting plate, brake-shoe it is another
One end is resisted against in actuating device, is driven two pieces of brake-shoes to be turned out around supporting pin by actuating device and is pressed against brake drum
On inner cylinder face, it is connected with return spring between two pieces of brake-shoes, two pieces of brake-shoes of opening are retracted into original by return spring
Position, it is characterized in that：The pin hole is strip shaped pin hole, and the supporting pin can be moved radially along the length direction of pin hole, pin hole
Length direction and brake-shoe because the wedging brake drum generated by the active force in the tangent to periphery direction of brake drum being transported
Dynamic trend is mutually complied with so that supporting pin can move radially under this movement tendency along the length direction of pin hole.
2. the Trailer car shaft as described in claim 1 with self energizing effort floating brake apparatus, it is characterized in that：It is braked at described two pieces
The second return spring is connected between hoof, link position of second return spring on the brake-shoe is close to the supporting pin.
3. the Trailer car shaft as claimed in claim 1 or 2 with self energizing effort floating brake apparatus, it is characterized in that：In the pin hole
The position at place, the supporting plate global formation have an open tubular column, in open tubular column it is tight it is embedding there are one bushings, the pin hole is to be opened in
Through-hole on the bushing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720045771 | 2017-01-16 | ||
| CN2017200457711 | 2017-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207916822U true CN207916822U (en) | 2018-09-28 |
Family
ID=63611667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721318513.2U Expired - Fee Related CN207916822U (en) | 2017-01-16 | 2017-10-13 | Trailer car shaft with self energizing effort floating brake apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207916822U (en) |
-
2017
- 2017-10-13 CN CN201721318513.2U patent/CN207916822U/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: 20180928 Termination date: 20191013 |