CN201730984U - Brake - Google Patents
Brake Download PDFInfo
- Publication number
- CN201730984U CN201730984U CN2010202723568U CN201020272356U CN201730984U CN 201730984 U CN201730984 U CN 201730984U CN 2010202723568 U CN2010202723568 U CN 2010202723568U CN 201020272356 U CN201020272356 U CN 201020272356U CN 201730984 U CN201730984 U CN 201730984U
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- brake
- break
- floor
- piston
- screw rod
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Abstract
The utility model discloses a brake, which comprises a brake wheel cylinder (1) and brake actuating devices (2). The brake wheel cylinder (1) and the brake actuating devices (2) are fixedly connected in a threaded manner; the brake actuating devices (2) are symmetrically arranged at two ends of a support (23) positioned inside a brake drum (22) of the brake; a brake shoe assembly is fixedly arranged between the brake actuating devices (2); and simultaneously an automatic clearance compensation device is further arranged on the brake. Accordingly, the brake has the advantages of simple structure, low requirements on assembly space, fine brake effect, high safety and reliability, and capability of carrying out automatic clearance compensation.
Description
Technical field
The utility model relates to a kind of break, is specifically related to a kind of running mechanism drum brake.
Background technique
At present, a large amount of cammingly drum brakes that use on engineering machinery and special purpose vehicle or other running mechanisms, it mainly comprises brake cylinder, brake arm, camshaft and brake shoe etc., this brake cylinder need be provided with support specially it is fixed on vehicle bridge or axletree, this has just proposed higher requirement to assembly space, and complex structure, the manufacture cost height.
Simultaneously, this break is to drive brake arm by brake cylinder camshaft is rotated, thereby promoting two brake shoes outwards opens, make brake shoe contact brake drum to realize braking to complete machine, but because compensation need be manually adjusted in the gap that produces because of friction between brake shoe and the brake drum, this not only causes braking deviation easily, and its reliability is relatively poor, uses also inconvenient.
Further be, this break is generally the cammingly neck that driven by air pressure from shoe drum brake, as shown in Figure 1, it comprises brake drum, be fitted in the brake drum two brake shoes 111 and with the camshaft 222 of these two brake shoe 111 mating reactions; The break of this structure is because what adopt is that the mating reaction of camshaft and brake shoe realizes braking, so when the camshaft rotation is braked, one of them brake shoe is the neck hoof, then another brake shoe must be for from hoof, and from the braking force of hoof can only reach usually neck hoof braking force half in addition littler.Therefore, for the drum brake of this structure, its braking moment is less than normal, can not satisfy the demanding customer requirements of braking moment.
The model utility content
At above-mentioned deficiency, that the utility model provides is simple in structure, reliability better and braking moment can satisfy the break of customer requirements.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
A kind of break comprises brake cylinder and braking executive device, and it is fixing to be threaded between described brake cylinder and the described braking executive device.
One end of described brake cylinder is socketed in the cylinder body of described braking executive device and is threaded fixing with this cylinder body, be about in the cylinder body that described brake cylinder directly is fastened to described braking executive device, simultaneously locking nut is set in both joints, can can play effect locking and sealing this moment as required at stubborn place's full-filling screw thread fastening glue or other screw threads for fastening materials of connecing of described brake cylinder and braking executive device.
In order to make this break possess the clearance automatic compensation function, prevent braking deviation, improve operational safety, this break also includes the pushing device that is fitted in the described cylinder body, and the lower end of this pushing device connects tourelle, and described brake cylinder and corresponding with the wheelcylinder piston position of this brake cylinder is stretched in the upper end; Described cylinder body is the T type, and its horizontal two ends are provided with piston hole, is 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 regulating piston in described tourelle position, the positioning screwn that is arranged on the controlling device in the described regulating piston and is loaded on the described cylinder body and this controlling device is positioned.
In order further to carry out clearance automatic compensation, described controlling device comprises the regulating ring that is arranged in the described regulating 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 is on described spiral chute.
Described elastic device is the spring clamp that two ends are connected to described adjusting screw rod end, also can adopt other devices certainly; The arranged outside of described adjusting screw rod has dirt-proof boot, with prevent air can dust impurity enter described controlling device can; Described pushing device is the catch bar that is fitted in the described cylinder body, and this catch bar lower end connects tourelle, and described brake cylinder and corresponding with the wheelcylinder piston position of this brake cylinder is stretched in the upper end, promotes its motion by described wheelcylinder piston in the course of the work; Also be provided with return spring on this catch bar simultaneously, 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 lower end that is connected described catch bar and have the laterally steering groove leading truck and be arranged in described laterally steering groove and with the corresponding rolling ball in described regulating piston position; The end that described catch bar connects described leading truck is wedge shape, so that described catch bar acts on described rolling ball better; The horizontal ends of the equipped pushing device of described cylinder body can be provided with protecting jacket, and this protecting jacket is fixed as good with described cylinder body to be threaded.
This break also comprises brake drum and is arranged on the interior support of described brake drum that described braking executive device is symmetrical arranged the two ends of described support, and is set with brake shoe assembly between described braking executive device.
Described brake shoe assembly comprises the brake shoe that is symmetricly set on described support two ends, symmetry herein can be axial symmetry, also can radial symmetric or center symmetry, this brake shoe comprises floor, be arranged on the arc plate and the friction plate that adopts rivet and be connected with described floor in this floor outside by this arc plate, described braking executive device is provided with the limiting stopper that has straight trough, the two ends of described floor are circular-arc and fix with described straight trough crimping, the friction plate cylindrical of brake shoe assembly can be contacted with the brake drum endoporus equably, prevent braking deviation, the middle part is fixed with described support, be that above-mentioned brake shoe assembly is neck hoof, its braking moment equal and opposite in direction when braking.
The side, middle part of described floor is fixed by stage clip and described support crimping, so that described brake shoe assembly is in quick condition, can adjust its position flexibly; In order to make brake shoe assembly self-return after braking is finished, this floor is provided with the returning pull-spring with its tension, and the two ends of this returning pull-spring are individually fixed on the described floor.
The described support outside also can be provided with dust-proof cover, enters break to prevent dust in air.
Owing to adopted said structure, the utlity model has following beneficial effect:
(1) in the break that the utility model provides, adopt between its brake cylinder and the braking executive device be threaded fixing, being about to brake cylinder directly is fastened in the braking executive device, replaced and on vehicle bridge or axletree, established support in the present technology specially in addition brake cylinder is fixed, simple in structure, easy to use, saved assembly space greatly, reduce production costs.
(2) simultaneously, above-mentioned break also is provided with the clearance automatic compensation device, it is the clearance automatic compensation device that is provided with in the braking executive device with the pushing device mating reaction, 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.
(3) 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 regulating 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 regulating 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, used more safe and reliable.
(4) further be, at above-mentioned break, the utility model has also fixedly been set up brake shoe assembly between braking executive device, make this break have two-way two neck hoof boosting function, for background technique, overcome from hoof braking force and can only reach half of neck hoof braking force even littler defective, no matter promptly running mechanism is in and advances or fallback state, this break can be realized the effect of two-way two neck hoof reinforcements, thereby satisfy the demanding occasion of braking moment, have good braking effect.
(5) in the above-mentioned break, the floor two ends of brake shoe are circular-arc and fix with the straight trough crimping of limiting stopper, therefore, brake shoe can move along the straight trough of this limiting stopper, even the brake drum deviation from circular from is big or during brake shoe assembly centre-of gravity shift, the friction plate that also can guarantee brake shoe well keeps contacting preferably with brake drum, thereby avoids braking deviation, has further guaranteed carrying out smoothly of braking process.
Description of drawings
Fig. 1 is the structural drawing of the wheeled neck of the utility model background technique convexity from shoe drum brake.
Fig. 2 is the structural drawing of break among the utility model embodiment.
Fig. 3 is that A-A among Fig. 2 is to sectional view.
Fig. 4 is the structural drawing of brake shoe shown in Figure 2.
Fig. 5 is the enlarged view of I among Fig. 3.
Fig. 6 is the internal structure partial sectional view of braking executive device among the utility model embodiment.
Fig. 7 is the connection diagram of brake cylinder and braking executive device.
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 Fig. 2～shown in Figure 7, a kind of break comprises brake cylinder 1 and braking executive device 2, and it is fixing to be threaded between described brake cylinder 1 and the described braking executive device 2; One end of described brake cylinder 1 is socketed on and is threaded fixing in the cylinder body 3 of described braking executive device 2 and with this cylinder body 3 and at this joint full-filling screw thread fastening glue 21, in both joints locking nut 4 is set simultaneously.
This break also includes the pushing device that is fitted in the described cylinder body 3, and the lower end of this pushing device connection tourelle, and described brake cylinder 1 and corresponding with the wheelcylinder piston 1-1 position of this brake cylinder 1 is stretched in the upper end; Described cylinder body 3 is the T type, and its horizontal two ends are provided with piston hole 5, is fitted with the clearance automatic compensation device corresponding with described tourelle position in this piston hole 5; Described clearance automatic compensation device comprise slide be fitted in the described piston hole 5 and with the corresponding regulating piston 6 in described tourelle position, the positioning screwn 7 that is arranged on the controlling device in the described regulating piston 6 and is loaded on the described cylinder body 3 and this controlling device is positioned; Described controlling device comprises the regulating ring 10 that is arranged in the described regulating piston 6 and has spiral chute 8 and unidirectional ratchet 9, be arranged in the adjusting nut 11 of these regulating ring 10 outer ends, be inserted in successively described adjusting nut 11 and regulating ring 10 adjusting screw rod 12, be fixed in described adjusting screw rod 12 outer ends and this adjusting screw rod 12 carried out spacing limiting stopper 14 by elastic device 13; Described unidirectional ratchet 9 is arranged at contacting on the end face of described regulating ring 10 and adjusting nut 11; Described positioning screwn 7 apical graftings are on described spiral chute 8: the spring clamp of described elastic device 13 described adjusting screw rod 12 ends for two ends are connected to; The arranged outside of described adjusting screw rod 12 has dirt-proof boot 15; Described pushing device is the catch bar 16 that is fitted in the described cylinder body 3, and the lower end of this catch bar 16 connects tourelle, and described brake cylinder 1 and corresponding with the wheelcylinder piston 1-1 position of this brake cylinder 1 is stretched in the upper end; Also be provided with return spring 17 on this catch bar 16 simultaneously; Described tourelle comprise the lower end that is connected described catch bar 16 and have the leading truck 19 of laterally steering groove 18 and be arranged in described laterally steering groove 18 and with the corresponding rolling ball 20 in described regulating piston 6 positions; The end that described catch bar 16 connects described leading truck 19 is wedge shape.
This break also comprises brake drum 22 and the support 23 that is arranged in the described brake drum 22, and described braking executive device 2 is symmetrical arranged the two ends of described support 23, and is set with brake shoe assembly between described braking executive device 2; Described brake shoe assembly comprises the brake shoe 24 that is symmetricly set on described support 23 two ends, this brake shoe 24 comprises floor 25, is arranged on the arc plate 26 and the friction plate 28 that adopts rivet 27 and be connected with described floor 25 by this arc plate 26 in these floor 25 outsides, described braking executive device 2 is provided with the limiting stopper 14 that has straight trough 29, the two ends of described floor 25 are circular-arc and fix with described straight trough 29 crimping, and middle part and described support 23 are fixing; The side, middle part of described floor 25 is fixed by stage clip 30 and described support 23 crimping; And this floor 25 is provided with the returning pull-spring 31 with its tension, and the two ends of this returning pull-spring 31 are individually fixed on the described floor 25, and the arranged outside of described support 23 has dust-proof cover 32.
The working principle that this break carries out clearance automatic compensation is: earlier described brake cylinder 1 and described braking executive device 2 are twisted connect fixing, again described braking executive device 2 symmetries are installed on the two ends of described support 23, then described brake cylinder 1 is inflated, the catch bar 16 that makes brake cylinder 1 promote braking executive device 2 moves downward, thereby catch bar 16 act on the rolling ball 20 that is arranged in leading truck 19 along the laterally steering groove 18 of leading truck 19 to two lateral movements, promote regulating piston 6 to two lateral movements, regulating piston 6 promotes adjusting nut 11, adjusting screw rod 12, limiting stopper 14 and brake shoe 24 outwards move, and brake shoe 24 is contacted with brake drum 22 and finish braking process to complete machine.In this process, because regulating ring 10 is provided with spiral chute 8, and positioning screwn 7 apical graftings are in spiral chute 8, and regulating ring 10 rotates.And adjusting screw rod 12 and limiting stopper 14 are fixed together by elastic device 13, and therefore adjusting screw rod 12 can not rotate, and the adjusting nut 11 that is loaded on the adjusting screw rod 12 can not rotate yet.Because contacting end face with adjusting nut 11 at regulating ring 10 is provided with unidirectional ratchet 9, regulating ring 10 rotates to an angle with respect to adjusting nut 11, falls into another adjacent ratchet slot.To brake cylinder 1 die (producing brake clearance between brake shoe 24 and the brake drum 22 in the aforementioned braking process), limiting stopper 14, regulating piston 6, regulating ring 10, adjusting nut 11, adjusting screw rod 12 all moves to the inside, regulating ring 10 produces counterrotating under the effect of positioning screwn 7, contact with adjusting nut 11 at regulating ring 10 under unidirectional ratchet 9 effects of end face, regulating ring 10 is stirred adjusting nut 11 counterrotatings and is rotated, produce relative rotation thereby make between adjusting nut 11 and the adjusting screw rod 12, adjusting screw rod 12 protruding certain distances are finished the automatic compensation of brake clearance.
When the generation brake clearance was big between brake shoe in the braking process 24 and the brake drum 22, the angle of swing of regulating ring 10 was bigger, and it will fall into adjacent another ratchet slot, had therefore finished the automatic backlash compensation of braking executive device 2; When brake clearance hour, the relative rotating amount of regulating ring 10 can not turn over a ratchet slot, need not to carry out the brake clearance compensation this moment; Simultaneously in the process of break braking, the brake shoe assembly that is arranged between the described braking executive device 2 has two-way two neck hoof boosting function, no matter promptly running mechanism is in and advances or fallback state, this break can be realized the effect of two-way two neck hoof reinforcements, thereby satisfy the demanding occasion of braking moment, have good braking effect.
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. a break comprises brake cylinder (1) and braking executive device (2), it is characterized in that: it is fixing to be threaded between described brake cylinder (1) and the described braking executive device (2).
2. break as claimed in claim 1, it is characterized in that: an end of described brake cylinder (1) is socketed in the cylinder body (3) of described braking executive device (2) and is threaded fixingly with this cylinder body (3), and locking nut (4) is set in both joints simultaneously.
3. break as claimed in claim 1 or 2, it is characterized in that: this break also includes the pushing device that is fitted in the described cylinder body (3), and the lower end of this pushing device connects tourelle, and described brake cylinder (1) and corresponding with wheelcylinder piston (1-1) position of this brake cylinder (1) is stretched in the upper end; Described cylinder body (3) is the T type, and its horizontal two ends are provided with piston hole (5), is fitted with the clearance automatic compensation device corresponding with described tourelle position in this piston hole (5).
4. break as claimed in claim 3 is characterized in that: described clearance automatic compensation device comprise slide be fitted in the described piston hole (5) and with the corresponding regulating piston in described tourelle position (6), the positioning screwn (7) that is arranged on the controlling device in the described regulating piston (6) and is loaded on that described cylinder body (3) is gone up and this controlling device is positioned.
5. break as claimed in claim 4 is characterized in that: described controlling device comprise be arranged in the described regulating piston (6) and have spiral chute (8) and the regulating ring (10) of unidirectional ratchet (9), be arranged in the adjusting nut (11) of this regulating ring (10) outer end, successively be inserted in described adjusting nut (11) and regulating ring (10) adjusting screw rod (12), be fixed in described adjusting screw rod (12) outer end and this adjusting screw rod (12) carried out spacing limiting stopper (14) by elastic device (13); Described unidirectional ratchet (9) is arranged at contacting on the end face of described regulating ring (10) and adjusting nut (11); Described positioning screwn (7) apical grafting is on described spiral chute (8).
6. break as claimed in claim 5 is characterized in that: the spring clamp of described elastic device (13) described adjusting screw rod (12) end for two ends are connected to; The arranged outside of described adjusting screw rod (12) has dirt-proof boot (15); Described pushing device is for being fitted in the catch bar (16) in the described cylinder body (3), and this catch bar (16) lower end connects tourelle, and described brake cylinder (1) and corresponding with wheelcylinder piston (1-1) position of this brake cylinder (1) is stretched in the upper end; Also be provided with return spring (17) on this catch bar (16) simultaneously.
7. break as claimed in claim 6 is characterized in that: described tourelle comprise the lower end that is connected described catch bar (16) and have the leading truck (19) of laterally steering groove (18) and be arranged in described laterally steering groove (18) and with the corresponding rolling ball in described regulating piston (6) position (20); The end that described catch bar (16) connects described leading truck (19) is wedge shape.
8. break as claimed in claim 1 or 2, it is characterized in that: this break also comprises brake drum (22) and is arranged on the interior support (23) of described brake drum (22), described braking executive device (2) is symmetrical arranged the two ends of described support (23), and is set with brake shoe assembly between described braking executive device (2).
9. break as claimed in claim 8, it is characterized in that: described brake shoe assembly comprises the brake shoe (24) that is symmetricly set on described support (23) two ends, this brake shoe (24) comprises floor (25), be arranged on the arc plate (26) and the friction plate (28) that adopts rivet (27) and be connected with described floor (25) in this floor (25) outside by this arc plate (26), described braking executive device (2) is provided with the limiting stopper (14) that has straight trough (29), the two ends of described floor (25) are circular-arc and fix with described straight trough (29) crimping, and middle part and described support (23) are fixing.
10. break as claimed in claim 9 is characterized in that: the side, middle part of described floor (25) is fixed by stage clip (30) and described support (23) crimping; And this floor (25) is provided with the returning pull-spring (31) with its tension, and the two ends of this returning pull-spring (31) are individually fixed on the described floor (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202723568U CN201730984U (en) | 2010-07-27 | 2010-07-27 | Brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202723568U CN201730984U (en) | 2010-07-27 | 2010-07-27 | Brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201730984U true CN201730984U (en) | 2011-02-02 |
Family
ID=43522141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202723568U Expired - Lifetime CN201730984U (en) | 2010-07-27 | 2010-07-27 | Brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201730984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939506A (en) * | 2014-04-28 | 2014-07-23 | 吉林中航航空发动机维修有限责任公司 | Adjustable wedge type brake wheel cylinder |
| CN109210112A (en) * | 2017-07-07 | 2019-01-15 | 明鸿工业股份有限公司 | Automatic compensation device for free clearance of drum brake and rocker arm end compensation device |
-
2010
- 2010-07-27 CN CN2010202723568U patent/CN201730984U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939506A (en) * | 2014-04-28 | 2014-07-23 | 吉林中航航空发动机维修有限责任公司 | Adjustable wedge type brake wheel cylinder |
| CN109210112A (en) * | 2017-07-07 | 2019-01-15 | 明鸿工业股份有限公司 | Automatic compensation device for free clearance of drum brake and rocker arm end compensation device |
| CN109210112B (en) * | 2017-07-07 | 2020-02-18 | 明鸿工业股份有限公司 | Automatic compensation device for free clearance of drum brake and rocker arm end compensation device |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |