CN201802790U - Brake actuating device capable of realizing clearance automatic compensation - Google Patents
Brake actuating device capable of realizing clearance automatic compensation Download PDFInfo
- Publication number
- CN201802790U CN201802790U CN2010202722669U CN201020272266U CN201802790U CN 201802790 U CN201802790 U CN 201802790U CN 2010202722669 U CN2010202722669 U CN 2010202722669U CN 201020272266 U CN201020272266 U CN 201020272266U CN 201802790 U CN201802790 U CN 201802790U
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- Prior art keywords
- cylinder body
- braking executive
- screw rod
- piston
- adjusting screw
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Abstract
The utility model provides a brake actuating device capable of realizing clearance automatic compensation, which comprises a cylinder body (1) and a pushing device assembled inside the cylinder body (1), wherein a rolling device is arranged below the pushing device; the cylinder body (1) is T-shaped, and piston holes (17) are formed at two horizontal ends of the cylinder body (1); and the clearance automatic compensation device which is positioned opposite to the rolling device is assembled in the piston holes (17). The pushing device of the brake actuating device acts on the clearance automatic compensation device through the rolling device, so as to realize the automatic clearance compensation between a brake shoe and a brake drum; the structure is simple; the use is convenient; and the brake actuating device is reliable.
Description
Technical field
The utility model relates to a kind of drum brake of running mechanism, particularly the braking executive device of this drum brake.
Background technique
For running mechanism, especially engineering machinery and special purpose vehicle, braking executive device is crucial braking component, it mainly is to be driven its motion and made brake shoe contact brake drum to realize the braking to complete machine by brake cylinder, but compensation need be manually adjusted in the gap that produces because of friction between brake shoe and the brake drum thus, this not only causes braking deviation easily, and its reliability is relatively poor, uses very inconvenient.
The model utility content
At above-mentioned deficiency, the utility model provides a kind of braking executive device that can realize clearance automatic compensation.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
A kind of braking executive device that can realize clearance automatic compensation, comprise cylinder body and be fitted in the interior pushing device of described cylinder body, the below of described pushing device is provided with tourelle, described cylinder body is the T type, its horizontal two ends are provided with piston hole, are fitted with the clearance automatic compensation device corresponding with described tourelle position in this piston hole.
Described clearance automatic compensation device comprise slide be fitted in the described piston hole and with the corresponding piston in described tourelle position, the positioning screwn that is arranged on the controlling device in the described piston and is loaded on the described cylinder body and this controlling device is positioned.
Described controlling device comprises the regulating ring that is arranged in the described piston and has spiral chute and unidirectional ratchet, be arranged in the adjusting nut of this regulating ring outer end, be inserted in successively described adjusting nut and regulating ring adjusting screw rod, be fixed in described adjusting screw rod outer end and this adjusting screw rod carried out spacing limiting stopper by elastic device; Described unidirectional ratchet is arranged at contacting on the end face of described regulating ring and adjusting nut; Described positioning screwn apical grafting on described spiral chute, thereby can carry out regulating ring spacing, further to carry out the gap adjustment.
Described elastic device is the spring clamp that two ends are connected to described adjusting screw rod end, also can be other devices.
In order to prevent that dust in air from entering into controlling device, the arranged outside of described adjusting screw rod has dust-proof cover.
Described pushing device is the catch bar that is fitted in the described cylinder body, and this catch bar is provided with return spring, and this return spring can make its self-return when braking executive device is finished a braking process, for braking process is ready next time.
Described tourelle comprise the leading truck that is sleeved on described catch bar lower end and has the laterally steering groove and be arranged in described laterally steering groove and with the corresponding rolling ball of described piston position, this rolling ball is in order to promote piston and then to promote adjusting screw rod.
In order to make described catch bar act on described rolling ball better, pack into an end of described leading truck of described catch bar is wedge shape.
In order to prevent that airborne impurity from entering into cylinder body, an end of the equipped pushing device of described cylinder body is provided with protecting jacket, and this protecting jacket is threaded fixing with described cylinder body.
Described rolling ball is a steel ball, to prolong the working life of tourelle, also can adopt other wear resistancies spheroid preferably as required certainly.
The beneficial effects of the utility model are: be provided with the clearance automatic compensation device with the pushing device mating reaction in the braking executive device that the utility model provides, promptly this braking executive device comprises and is fitted in its inner pushing device, tourelle and with the corresponding clearance automatic compensation device in this tourelle position, this pushing device by tourelle to the effect of clearance automatic compensation device, it is compensated automatically to the gap that running mechanism carries out producing because of friction between the brake shoe and brake drum in the braking process, saved the operation of manually carrying out the gap compensation, save time conveniently, simple in structure; Further be, above-mentioned tourelle adopts the leading truck and the rolling ball that is arranged in this laterally steering groove that is provided with the laterally steering groove and is sleeved on the catch bar lower end, above-mentioned clearance automatic compensation device adopts and the corresponding piston in rolling ball position, regulating ring, adjusting nut and adjusting screw rod etc., therefore, promote rolling ball in the process that catch bar moves downward and act on piston, and then act on regulating ring, adjusting nut and adjusting screw rod etc., these parts interact and realize the gap between brake shoe and the brake drum is compensated automatically, guaranteed that further braking process deviation phenomenon can not occur, safe and reliable.
Description of drawings
Fig. 1 is for realizing the structural drawing of the braking executive device of clearance automatic compensation among the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, a kind of braking executive device of realizing clearance automatic compensation, comprise cylinder body 1 and the pushing device that is fitted in the described cylinder body 1, the below of described pushing device is provided with tourelle, described cylinder body 1 is the T type, its horizontal two ends are provided with piston hole 17, are fitted with the clearance automatic compensation device corresponding with described tourelle position in this piston hole 17; Described clearance automatic compensation device comprise slide be fitted in the described piston hole 17 and with the corresponding piston 2 in described tourelle position, the positioning screwn 9 that is arranged on the controlling device in the described piston 2 and is loaded on the described cylinder body 1 and this controlling device is positioned; Described controlling device comprises the regulating ring 4 that is arranged in the described piston 2 and has spiral chute 3 and unidirectional ratchet 18, be arranged in the adjusting nut 5 of these regulating ring 4 outer ends, be inserted in successively described adjusting nut 5 and regulating ring 4 adjusting screw rod 6, be fixed in described adjusting screw rod 6 outer ends and this adjusting screw rod 6 carried out spacing limiting stopper 8 by elastic device 7; Described unidirectional ratchet 18 is arranged at contacting on the end face of described regulating ring 4 and adjusting nut 5; Described positioning screwn 9 apical graftings are on described spiral chute 3; The spring clamp of described elastic device 7 described adjusting screw rod 6 ends for two ends are connected to; The arranged outside of described adjusting screw rod 6 has dust-proof cover 10; Described pushing device is the catch bar 11 that is fitted in the described cylinder body 1, and this catch bar 11 is provided with return spring 12; Described tourelle comprise the leading truck that is sleeved on described catch bar 11 lower ends and has laterally steering groove 13 14 and be arranged in described laterally steering groove 13 and with the corresponding rolling ball 15 in described piston 2 positions; Pack into an end of described leading truck 14 of described catch bar 11 is wedge shape; One end of described cylinder body 1 equipped pushing device is provided with protecting jacket 16, and this protecting jacket 16 is threaded fixing with described cylinder body 1; Described rolling ball 15 is a steel ball.
The braking process of above-mentioned braking executive device is: the cylinder body 1 with above-mentioned braking executive device is connected with the brake cylinder of running mechanism earlier, and brake cylinder inflated, the catch bar 11 that makes brake cylinder promote braking executive device moves downward, thereby catch bar 11 act on the rolling ball 15 that is arranged in leading truck 14 along the laterally steering groove 13 of leading truck 14 to two lateral movements, promote piston 2 to two lateral movements, piston 2 promotes adjusting nut 5, adjusting screw rod 6, limiting stopper 8 and brake shoe outwards move, and brake shoe is contacted with brake drum and finish braking process to complete machine.In this process, because regulating ring 4 is provided with spiral chute 3, and positioning screwn 9 apical graftings are in spiral chute 3, and regulating ring 4 rotates.And adjusting screw rod 6 and limiting stopper 8 are fixed together by elastic device 7, and therefore adjusting screw rod 6 can not rotate, and the adjusting nut 5 that is loaded on the adjusting screw rod 6 can not rotate yet.Because contacting end face with adjusting nut 5 at regulating ring 4 is provided with unidirectional ratchet 18, regulating ring 4 rotates to an angle with respect to adjusting nut 5, falls into another adjacent ratchet slot.To brake cylinder die (producing brake clearance between brake shoe and the brake drum in the aforementioned braking process), limiting stopper 8, piston 2, regulating ring 4, adjusting nut 5, adjusting screw rod 6 all move to the inside, regulating ring 4 produces counterrotating under the effect of positioning screwn 9, contact with adjusting nut 5 at regulating ring 4 under unidirectional ratchet 18 effects of end face, regulating ring 4 is stirred adjusting nut 5 counterrotatings and is rotated, produce relative rotation thereby make between adjusting nut 5 and the adjusting screw rod 6, adjusting screw rod 6 protruding certain distances are finished the automatic compensation of brake clearance.
When above-mentioned brake clearance was big, the angle of swing of regulating ring 4 was bigger, and it will fall into adjacent another spiral chute, had therefore finished the automatic backlash compensation of braking executive device; When brake clearance hour, the relative rotating amount of regulating ring 4 can not turn over a spiral chute, need not to carry out the brake clearance compensation this moment.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. the braking executive device that can realize clearance automatic compensation, comprise cylinder body (1) and be fitted in the interior pushing device of described cylinder body (1), it is characterized in that: the below of described pushing device is provided with tourelle, described cylinder body (1) is the T type, its horizontal two ends are provided with piston hole (17), are fitted with the clearance automatic compensation device corresponding with described tourelle position in this piston hole (17).
2. braking executive device as claimed in claim 1 is characterized in that: described clearance automatic compensation device comprise slide be fitted in the described piston hole (17) and with the corresponding piston in described tourelle position (2), the positioning screwn (9) that is arranged on the controlling device in the described piston (2) and is loaded on that described cylinder body (1) is gone up and this controlling device is positioned.
3. braking executive device as claimed in claim 2 is characterized in that: described controlling device comprise be arranged in the described piston (2) and have spiral chute (3) and the regulating ring (4) of unidirectional ratchet (18), be arranged in the adjusting nut (5) of this regulating ring (4) outer end, successively be inserted in described adjusting nut (5) and regulating ring (4) adjusting screw rod (6), be fixed in described adjusting screw rod (6) outer end and this adjusting screw rod (6) carried out spacing limiting stopper (8) by elastic device (7); Described unidirectional ratchet (18) is arranged at contacting on the end face of described regulating ring (4) and adjusting nut (5); Described positioning screwn (9) apical grafting is on described spiral chute (3).
4. braking executive device as claimed in claim 3 is characterized in that: the spring clamp of described elastic device (7) described adjusting screw rod (6) end for two ends are connected to.
5. as claim 3 or 4 described braking executive devices, it is characterized in that: the arranged outside of described adjusting screw rod (6) has dust-proof cover (10).
6. as each described braking executive device in the claim 2,3 or 4, it is characterized in that: described pushing device is for being fitted in the catch bar (11) in the described cylinder body (1), and this catch bar (11) is provided with return spring (12).
7. braking executive device as claimed in claim 6 is characterized in that: described tourelle comprise the leading truck (14) that is sleeved on described catch bar (11) lower end and has laterally steering groove (13) and be arranged in described laterally steering groove (13) and with the corresponding rolling ball in described piston (2) position (15).
8. braking executive device as claimed in claim 7 is characterized in that: pack into an end of described leading truck (14) of described catch bar (11) is wedge shape.
9. braking executive device as claimed in claim 8 is characterized in that: an end of the equipped pushing device of described cylinder body (1) is provided with protecting jacket (16), and this protecting jacket (16) is threaded fixing with described cylinder body (1).
10. braking executive device as claimed in claim 9 is characterized in that: described rolling ball (15) is a steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202722669U CN201802790U (en) | 2010-07-27 | 2010-07-27 | Brake actuating device capable of realizing clearance automatic compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202722669U CN201802790U (en) | 2010-07-27 | 2010-07-27 | Brake actuating device capable of realizing clearance automatic compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802790U true CN201802790U (en) | 2011-04-20 |
Family
ID=43872291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202722669U Expired - Lifetime CN201802790U (en) | 2010-07-27 | 2010-07-27 | Brake actuating device capable of realizing clearance automatic compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194535A (en) * | 2018-01-03 | 2018-06-22 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN108591306A (en) * | 2017-12-29 | 2018-09-28 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
-
2010
- 2010-07-27 CN CN2010202722669U patent/CN201802790U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591306A (en) * | 2017-12-29 | 2018-09-28 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN108194535A (en) * | 2018-01-03 | 2018-06-22 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN108194535B (en) * | 2018-01-03 | 2022-04-22 | 浙江师范大学 | Electronic mechanical brake-by-wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term |