CN203130867U - Automatic compensating device for gap between shoe block and brake drum of pulling plate type drum brake - Google Patents
Automatic compensating device for gap between shoe block and brake drum of pulling plate type drum brake Download PDFInfo
- Publication number
- CN203130867U CN203130867U CN 201320264047 CN201320264047U CN203130867U CN 203130867 U CN203130867 U CN 203130867U CN 201320264047 CN201320264047 CN 201320264047 CN 201320264047 U CN201320264047 U CN 201320264047U CN 203130867 U CN203130867 U CN 203130867U
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- brake
- drum
- brake shoe
- subplate
- mainboard
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Abstract
The utility model discloses an automatic compensating device for a gap between a shoe block and a brake drum of a pulling plate type drum brake. The automatic compensating device is characterized by comprising a supporting plate used for connecting a pair of first and second brake shoe blocks, wherein the supporting plate is composed of a main plate and an auxiliary plate, a neck connected with the first brake shoe block is formed in one end of the main plate, and a limiting gear is arranged at the other end of the main plate to form a slide connection between the auxiliary plate and the main plate; a pawl is further arranged on the main plate, and saw teeth are arranged at the edge of the auxiliary plate to form a locking mechanism with the pawl; a supporting arm embedded in the second brake shoe block is arranged on the auxiliary plate; and a tension spring used for pressing the main plate with the first brake shoe block is arranged at the end having the neck of the main plate. The automatic compensating device has the beneficial effects that the pawl on the main plate is relatively engaged with the saw teeth on the auxiliary plate to form the locking mechanism, and the limiting gear used for limiting the degree of freedom of the auxiliary plate is cooperatively utilized to control the gap between the first/second brake shoe block and the brake drum, the structure is simple and the control is reliable.
Description
Technical field
The utility model relates to a kind of break, relates in particular to a kind of pumping board formula drum brake hoof piece and brake drum clearance automatic compensation device.
Background technique
The friction facing of drum brake in use can constantly wear and tear, and the gap between friction facing and the brake drum is constantly enlarged, and can increase the lag time of braking mechanism operation, influences the Security of vehicle drive.For the gap between friction facing and the brake drum is remained in the OK range, people have designed the compensation mechanism such as ratchet bolt mechanism or worm-and-wheel gear, these compensation mechanism structures are haggled over complexity, have increased cost and the maintenance difficulty of break.
The model utility content
The utility model is at the existing in prior technology deficiency, and a kind of simple in structure, control reliable pumping board formula drum brake hoof piece and brake drum clearance automatic compensation device are provided.
The technical solution of the utility model is: designed the adjustable length dunnage that connects and support brake shoe, when this mechanism implements braking at brake shoe, can adjust length automatically, the gap fast to brake shoe compensates.
Be specially, a kind of pumping board formula drum brake hoof piece and brake drum clearance automatic compensation device, comprise the dunnage that connects a pair of brake shoe one/two, described dunnage is made of mainboard and subplate, described mainboard one end is provided with the draw-in groove that is connected with described brake shoe one, and the other end is provided with spacing shelves is slidingly connected described subplate and described mainboard formation; Also be provided with ratchet on the described mainboard, described subplate edge is provided with sawtooth and described ratchet constitutes locking framework; Described subplate is provided with the support arm that embeds described brake shoe two; One end at the draw-in groove place of described mainboard is provided with the extension spring with itself and one pressing of described brake shoe.
Wherein, described spacing shelves are welded on the described mainboard.
Another is preferred, and described spacing shelves are by described mainboard impact briquetting.
Wherein, described ratchet is connected with torsion spring.
Another is preferred, is positioned at described mainboard surface and is provided with the spring sheet that cooperates described ratchet to use.
Wherein, described subplate comprises body, and described support arm is arranged on the end that described body deviates from described draw-in groove.
During the break braking, brake shoe one and brake shoe two open, and mainboard and subplate that extension spring and support arm stretch and link together make support arm to the direction motion away from draw-in groove.When the friction facing on brake shoe one and the brake shoe two with after brake drum contacts, support arm and draw-in groove stop mutual motion.
When break stops to brake, brake shoe one and brake shoe two are drawn close, extension spring and support arm stop the stretching to the mainboard that links together and subplate, torsion spring or spring sheet make ratchet and sawtooth form locking, draw-in groove and support arm withstood brake shoe one and brake shoe two continue draw close, make the friction facing on brake shoe one and the brake shoe two stop to enlarge with the gap of brake drum respectively.
Use along with break, friction facing is more and more thinner, but the mutual alignment when friction facing contacts with brake drum between draw-in groove and the support arm is also more and more far away, and the mutual alignment between draw-in groove and the support arm can be realized fixing in the moment that each brake shoe one and brake shoe two are drawn close, thereby reaches the compensation to the gap respectively and between the brake drum of the friction facing on brake shoe one and the brake shoe two.
The beneficial effect of this programme can be learnt according to the narration to such scheme, constitute locking framework by the ratchet on the mainboard with the relative engagement of sawtooth on the subplate, and and the limiting block of restriction subplate degrees of freedom be used to control brake shoe one/two respectively and the gap between the brake drum, simple in structure, control is reliable.Torsion spring or spring sheet make ratchet and sawtooth keep often contacting and make the locking framework reaction soon.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation.
Fig. 2 is the utility model embodiment 2 structural representation
Fig. 3 is mounting point of the present utility model schematic representation.
Among the figure, 1, brake shoe one; 2, brake shoe two; 3, dunnage; 4, mainboard; 5, subplate; 6, body; 7, ratchet; 8, draw-in groove; 9, spacing shelves; 10, sawtooth; 11, support arm; 12, extension spring; 13, torsion spring; 14, friction facing; 15, brake drum; 16, spring sheet; 17, locking framework.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, this programme is set forth.
Embodiment 1
Shown in Fig. 1,3, the utility model is a kind of pumping board formula drum brake hoof piece and brake drum clearance automatic compensation device, comprise the dunnage 3 that connects a pair of brake shoe 1 and brake shoe 22, dunnage 3 is made of mainboard 4 and subplate 5, mainboard 4 one ends are provided with the draw-in groove 8 that is connected with brake shoe 1, the other end is provided with spacing shelves 9 is slidingly connected subplate 5 and mainboard 4 formations, and spacing shelves 9 are welded on the mainboard 4; Also be provided with ratchet 7 on the mainboard 4, subplate 5 edges are provided with sawtooth 10 and constitute locking framework 17 with ratchet 7, and ratchet 7 is connected with torsion spring 13, and torsion spring 13 makes ratchet 7 keep often contacting with sawtooth 10; Subplate 5 comprises body 6, and subplate 5 is provided with the support arm 11 that embeds brake shoe 22, and support arm 11 is arranged on the end that body 6 deviates from draw-in groove 8; One end at draw-in groove 8 places of mainboard 4 is provided with the extension spring 12 with itself and brake shoe one 1 pressings.
During the break braking, brake shoe 1 and brake shoe 22 open, and mainboard 4 and subplate 5 that extension spring 12 and support arm 11 stretch and link together make support arm 11 to the direction motion away from draw-in groove 8.When the friction facing 14 on brake shoe 1 and the brake shoe 22 with after brake drum 15 contacts, support arm 11 and draw-in groove 8 stop mutual motion.
When break stops to brake, brake shoe 1 and brake shoe 22 are drawn close, extension spring 12 and support arm 11 stop the stretching to the mainboard 4 that links together and subplate 5, torsion spring 13 makes ratchet 7 and sawtooth 10 form locking, draw-in groove 8 and support arm 11 withstood brake shoe 1 and brake shoe 22 continue draw close, make the friction facing 14 on brake shoe 1 and the brake shoe 22 stop to enlarge with the gap of brake drum 15 respectively.
Use along with break, friction facing 14 is more and more thinner, but the mutual alignment when friction facing 14 contacts with brake drum 15 between draw-in groove 8 and the support arm 11 is also more and more far away, and the mutual alignment between draw-in groove 8 and the support arm 11 can be realized fixing in the moment that each brake shoe 1 and brake shoe 22 are drawn close, thereby reaches the compensation to the gap respectively and between the brake drum 15 of the friction facing 14 on brake shoe 1 and the brake shoe 22.
Embodiment 2
As shown in Figure 2, embodiment 1 the limiting block 9 that is welded on the mainboard 4 is changed into by mainboard 4 stamping forming limiting blocks 9, structure is more firm; Change embodiment 1 torsion spring 13 into be arranged on mainboard 4 surfaces spring sheet 16, structure is more succinct.
The utility model can pass through or adopt existing techniques in realizing without the technical characteristics of describing; do not repeat them here; certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example; the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (8)
1. a pumping board formula drum brake hoof piece and brake drum clearance automatic compensation device, it is characterized in that, comprise the dunnage that connects a pair of brake shoe one/two, described dunnage is made of mainboard and subplate, described mainboard one end is provided with the draw-in groove that is connected with described brake shoe one, and the other end is provided with spacing shelves is slidingly connected described subplate and described mainboard formation; Also be provided with ratchet on the described mainboard, described subplate edge is provided with sawtooth and described ratchet constitutes locking framework; Described subplate is provided with the support arm that embeds described brake shoe two; One end at the draw-in groove place of described mainboard is provided with the extension spring with itself and one pressing of described brake shoe.
2. pumping board formula drum brake hoof piece according to claim 1 and brake drum clearance automatic compensation device is characterized in that, described spacing shelves are welded on the described mainboard.
3. pumping board formula drum brake hoof piece according to claim 1 and brake drum clearance automatic compensation device is characterized in that, described spacing shelves are by described mainboard impact briquetting.
4. according to claim 1 or 2 or 3 described pumping board formula drum brake hoof piece and brake drum clearance automatic compensation devices, it is characterized in that described ratchet is connected with torsion spring.
5. according to claim 1 or 2 or 3 described pumping board formula drum brake hoof piece and brake drum clearance automatic compensation devices, it is characterized in that, be positioned at described mainboard surface and be provided with the spring sheet that cooperates described ratchet to use.
6. according to claim 1 or 2 or 3 described pumping board formula drum brake hoof piece and brake drum clearance automatic compensation devices, it is characterized in that, described subplate comprises body, and described support arm is arranged on the end that described body deviates from described draw-in groove, the moulding of staggering of described support arm and described subplate.
7. pumping board formula drum brake hoof piece according to claim 4 and brake drum clearance automatic compensation device, it is characterized in that, described subplate comprises body, and described support arm is arranged on the end that described body deviates from described draw-in groove, the moulding of staggering of described support arm and described subplate.
8. pumping board formula drum brake hoof piece according to claim 5 and brake drum clearance automatic compensation device is characterized in that described subplate comprises body, and described support arm is arranged on the end that described body deviates from described draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320264047 CN203130867U (en) | 2013-05-15 | 2013-05-15 | Automatic compensating device for gap between shoe block and brake drum of pulling plate type drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320264047 CN203130867U (en) | 2013-05-15 | 2013-05-15 | Automatic compensating device for gap between shoe block and brake drum of pulling plate type drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130867U true CN203130867U (en) | 2013-08-14 |
Family
ID=48938847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320264047 Expired - Fee Related CN203130867U (en) | 2013-05-15 | 2013-05-15 | Automatic compensating device for gap between shoe block and brake drum of pulling plate type drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130867U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321689B (en) * | 2016-11-21 | 2019-02-12 | 李美取 | A kind of self-regulated manually driven drum brake |
| CN111577792A (en) * | 2020-06-08 | 2020-08-25 | 唐泽交通器材(泰州)有限公司 | Drum brake with good wear resistance |
| CN112065886A (en) * | 2020-08-31 | 2020-12-11 | 安徽江淮汽车集团股份有限公司 | Drum-type parking brake |
-
2013
- 2013-05-15 CN CN 201320264047 patent/CN203130867U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321689B (en) * | 2016-11-21 | 2019-02-12 | 李美取 | A kind of self-regulated manually driven drum brake |
| CN111577792A (en) * | 2020-06-08 | 2020-08-25 | 唐泽交通器材(泰州)有限公司 | Drum brake with good wear resistance |
| CN112065886A (en) * | 2020-08-31 | 2020-12-11 | 安徽江淮汽车集团股份有限公司 | Drum-type parking brake |
| CN112065886B (en) * | 2020-08-31 | 2021-09-28 | 安徽江淮汽车集团股份有限公司 | Drum-type parking brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140515 |