CN201284804Y - Bidirectional pushing structure brake with drum type floating brake shoe - Google Patents
Bidirectional pushing structure brake with drum type floating brake shoe Download PDFInfo
- Publication number
- CN201284804Y CN201284804Y CNU2008201002305U CN200820100230U CN201284804Y CN 201284804 Y CN201284804 Y CN 201284804Y CN U2008201002305 U CNU2008201002305 U CN U2008201002305U CN 200820100230 U CN200820100230 U CN 200820100230U CN 201284804 Y CN201284804 Y CN 201284804Y
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- brake shoe
- brake
- hinge pillar
- hub
- braking
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- Expired - Lifetime
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Abstract
The utility model discloses a brake in two-way pushing structure with drum-type floating brake shoes, which comprises a brake body. The brake body consists of a round brake hub, friction plates, a left brake shoe piece, a right brake shoe piece, a tension spring, a cam, a straight pin and a hinge pillar. The utility model is characterized in that the left brake shoe piece and the right brake shoe piece can move around the hinge pillar; the straight pin is arranged between the left brake shoe piece and the right brake shoe piece on the side of the hinge pillar; and the positions of the left brake shoe piece and the right brake shoe piece matched with the straight pin are inclined planes. The connected ends and the movable ends of the brake shoe pieces can be splayed outwards; the contact area between the brake shoe pieces and the inner side surface of the brake hub can be increased and kept unchanged; vehicles can be braked uniformly; the temperature increment resulting from braking is uniform; the abrasion of the braking hub is reduced; the brake hub is not broken easily; the service life of the brake hub is prolonged; and the potential safety hazard while vehicles are moving is eliminated and vehicles are ensured safe.
Description
Technical field
The utility model relates to the break that a kind of vehicle brake is used, especially drum-type, float, the break of two-way push, employing brake shoe.
Background technique
Break is guaranteeing to have important effect aspect the traffic safety.The drum brake that vehicle brake is used, form by braking hub, left and right sides brake shoe, cam, hinge pillar etc., left and right brake shoe is packed in the braking hub, one end is fixed on the hinge pillar and can rotates around hinge pillar, the other end leans against on the cam, and cam rotation promotes left and right brake shoe and rotates around hinge pillar to both sides, and promoting also, the pressing friction sheet contacts with the inboard working surface of braking hub, produce frictional force braking hub rotating speed is reduced, reach the effect that reduces car speed; Make vehicle deceleration or stop the operation of assurance vehicle safety; Break of the prior art, its structure has a variety of, and conventional structure is that wheel is installed on the braking hub, and wheel rotates together in company with the braking hub, and brake shoe is connected on the vehicle bridge by fixed plate, does not rotate with the braking hub; And friction plate is that riveted joint (or Bolt Connection) is on brake shoe.The brake shoe of braking in the hub is can only be along the radial deflection of braking hub basically when braking, and promotion also pressing friction sheet contacts with the inboard working surface of braking hub, and generation frictional force makes brakes the reduction of hub rotating speed, reaches the effect that reduces car speed; Brake shoe can not move in the braking hub, can only the braking hub in deflection, therefore the area of contact of brake shoe and the inboard working surface of braking hub brake shoe with brake the concentric and gap of hub when very little its area of contact also can only reach 70-80%, its area of contact has only 20-30% when very big in brake shoe and braking hub decentraction and gap, reducing brake shoe can not brake on the hub with the frictional force of the inboard working surface of braking hub and the frictional force of generation in stepless action, cause braking the hub discontinuity, the temperature that produces during braking raises inhomogeneous, and is same inhomogeneous etc. to the wearing and tearing of brake shoe; In addition, the fixed end of brake shoe can not contact with the inboard working surface of braking hub substantially, substantially can not produce wearing and tearing, and with respect to the movable end (being provided with an end of cam) of fixed end, it is frequent to contact very fast, the temperature rising of wearing and tearing with braking hub inner side surface, be easy to wearing and tearing or thermal fatigue and lost efficacy, significantly reduce its working life, cause braking the hub discontinuity and break, also have the potential safety hazard of braking failure.
Summary of the invention
The utility model provides a kind of and can increase brake shoe and the area of contact of the inboard working surface of braking hub, the brake with drum type floating brake shoe bidirectional propulsion structure that brake shoe can float in the braking hub at the fixing above-mentioned deficiency of brake shoe structure break of the drum-type of prior art.
The technical solution of the utility model: brake with drum type floating brake shoe bidirectional propulsion structure, comprise the break body, the break body is made up of braking hub, friction plate, left brake shoe, right braking hoof piece, extension spring, cam, garden pin and the hinge pillar of circle, left side brake shoe is connected by hinge pillar with the right braking hoof piece, and cam is arranged between left brake shoe and the right braking hoof piece; It is characterized in that: left brake shoe and right braking hoof piece can move around hinge pillar; In this side of hinge pillar, between left brake shoe and right braking hoof piece, the garden pin is set, left brake shoe and right braking hoof piece and garden pin matching part are the inclined-plane.
Brake with drum type floating brake shoe bidirectional propulsion structure, comprise the break body, the break body is made up of braking hub, friction plate, left brake shoe, right braking hoof piece, extension spring, cam, hinge pillar and second cam of circle, left side brake shoe is connected by hinge pillar with the right braking hoof piece, and cam is arranged between left brake shoe and the right braking hoof piece; It is characterized in that: left brake shoe and right braking hoof piece can move around hinge pillar; In this side of hinge pillar, between left brake shoe and right braking hoof piece, second cam is set; When braking, make the cam and second cam produce action synchronously.
Brake with drum type floating brake shoe bidirectional propulsion structure of the present utility model with respect to prior art, has following characteristics:
1, the connecting end of brake shoe and movable end can both outwards open, and brake shoe can be regulated its position automatically according to the size of the brake reaction force that is subjected to, and brake shoe can produce in the braking hub and move and deflection, is quick condition in the braking hub.
2, the connecting end of brake shoe and movable end can both outwards open and can float, closely contact with the inboard working surface of braking hub, can increase the area of contact of brake shoe and braking hub inner side surface and remain unchanged, the temperature that make that the braking hub is stressed evenly, produces during braking raises evenly.The braking hub is difficult for breaking, and increases the service life.
3, the stressed even wearing and tearing that can reduce brake shoe of braking hub, the life-span of prolongation brake shoe.
4, braking force increases and remains unchanged, and eliminates traffic safety hidden danger, ensures safety.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the utility model brake structural sketch;
Fig. 2 be Fig. 1 along A-A to sectional view;
Fig. 3 be Fig. 1 along B-B to sectional view;
Fig. 4 is second kind of embodiment's sketch of the utility model brake structural.
Embodiment
In Fig. 1,2,3,1-break body, 2-braking hub, 3-friction plate, 4-left brake shoe, 5-right braking hoof piece, 6-extension spring, 7-hinge pillar, 8-cam, 9-garden pin, 10-inclined-plane;
Brake with drum type floating brake shoe bidirectional propulsion structure of the present utility model, comprise break body 1, break body 1 mainly is made up of braking hub 2, friction plate 3, left brake shoe 4, right braking hoof piece 5, hinge pillar 7 and the cam 8 of circle, all be provided with friction plate 3 (normally riveted way is connected) at left brake shoe 4 and right braking hoof piece 5, left side brake shoe 4 contacts with braking hub 2 inboard working surfaces by friction plate 3 with right braking hoof piece 5, and left brake shoe 4 and right braking hoof piece 5 are arranged in the inner chamber of circular braking hub 2; Between left side brake shoe 4 and the right braking hoof piece 5 extension spring 6 is set, produces the effect of tension and return elastic force.Cam 8 rotates and promotes that left brake shoe 4 outwards opens with right braking hoof piece 5 and pressing friction sheet 3 contact with braking hub 2 inboard working surfaces during brake, produces frictional force and makes and brakes the reduction of hub rotating speed.Left side brake shoe 4 and right braking hoof piece 5 flexibly connect by hinge pillar 7, and left brake shoe 4 and right braking hoof piece 5 can produce deflection within the specific limits around hinge pillar 7.Above as prior art, do not describe in detail at this.
Improvement of the present utility model is that left brake shoe 4 and right braking hoof piece 5 are except more moving around hinge pillar 7, with respect to moving up and down of hinge pillar 7 around hinge pillar 7 deflections.(the camshaft rocking arm that skidding oil cylinder, cylinder promote to be attached thereto rotates cam 8 under external force, when camshaft rocking arm actuating cam 8) rotating, promote that left brake shoe 4 and right braking hoof piece 5 outwards open and rotate around hinge pillar 7, pressing friction sheet 3 contacts with braking hub 2 inboard working surfaces to make left brake shoe 4 and right braking hoof piece 5 promote also, produces the frictional force braking.In hinge pillar 7 these sides, among the figure below hinge pillar 7, between left brake shoe 4 and right braking hoof piece 5, garden pin 9 is set, left brake shoe 4 and right braking hoof piece 5 are designed to inclined-plane 10 with garden pin 9 matching parts, make the cavity that forms between left brake shoe 4 and the right braking hoof piece 5 up-small and down-big; At left brake shoe 4 and right braking hoof piece 5 because of stressed when moving down around hinge pillar 7, garden pin 9 can be given left brake shoe 4 and right braking hoof piece 5 thrust outward, the left brake shoe 4 and the right braking hoof piece 5 of hinge pillar 7 these sides are opened outward, produce braking force equally.
The optimum structure of left brake shoe 4 of the present utility model and right braking hoof piece 5 is symmetric arrangement, and structure is identical; Not monolateral when guaranteeing brake, guarantee the symmetrical configuration of whole break etc. simultaneously.
In Fig. 4,12-the second cam;
As second kind of embodiment of the utility model brake structural, be that left brake shoe 4 and right braking hoof piece 5 are except more moving around hinge pillar 7, with respect to moving up and down of hinge pillar 7 around hinge pillar 7 deflections.In hinge pillar 7 these sides, among the figure below hinge pillar 7, between left brake shoe 4 and right braking hoof piece 5, second cam 12 is set, replace garden pin 9 with second cam 12, when braking, make the cam 8 and second cam 12 produce action synchronously, make left brake shoe 4 and right braking hoof piece 5 on, lower end (with respect to the upper and lower end of hinge pillar 7) produces synchronously and moves radially and with respect to the yaw motion of hinge pillar 7, making the whole outer rim of left brake shoe 4 and right braking hoof piece 5 all pass through friction plate 3 contacts with braking hub 2 inboard working surfaces, the braking of generation frictional force increases left brake shoe 4 and right braking hoof piece 5 and the area of contact of braking hub 2 greatly.
Working procedure of the present utility model: during brake, rotate under the braking force effect of cam 8 when brake, promoting left brake shoe 4 and right braking hoof piece 5 outwards opens with respect to hinge pillar 7 and rotates to both sides, the pressing friction sheet contacts with braking hub 2 inboard working surfaces to make left brake shoe 4 and right braking hoof piece 5 promote also, produces frictional force; Simultaneously, left brake shoe 4 and right braking hoof piece 5 are subjected to braking the reaction force of hub 2 inboard braking actions, move down with respect to hinge pillar 7; Because the matching relationship on garden pin 9 and inclined-plane 10, the left brake shoe 4 on hinge pillar 7 both sides and right braking hoof piece 5 move and deflection outward with respect to hinge pillar 7, the left brake shoe 4 of promotion hinge pillar 7 these sides and 5 generations of right braking hoof piece move radially and open, and and then the pressing friction sheet contact generation frictional force with the inboard working surface of braking hub.In the second kind of example structure that adopts second cam 12, during brake, the cam 8 and second cam 12 rotate synchronously, the upper and lower end generation synchronously of left brake shoe 4 and right braking hoof piece 5 is moved radially or deflection, promote also the pressing friction sheet contacts the braking of generation frictional force with the inboard working surface of braking hub.
Claims (3)
1, brake with drum type floating brake shoe bidirectional propulsion structure, comprise break body (1), break body (1) is made up of braking hub (2), friction plate (3), left brake shoe (4), right braking hoof piece (5), extension spring (6), hinge pillar (7) and cam (8), left side brake shoe (4) and right braking hoof piece (5) flexibly connect by hinge pillar (7), and cam (8) is arranged between left brake shoe (4) and the right braking hoof piece (5); It is characterized in that: left brake shoe (4) and right braking hoof piece (5) can center on hinge pillar (7) and move; In this side of hinge pillar (7), between left brake shoe (4) and right braking hoof piece (5), garden pin (9) is set, left brake shoe (4) and right braking hoof piece (5) they are inclined-plane (10) with garden pin (9) matching part.
2, brake with drum type floating brake shoe bidirectional propulsion structure according to claim 1 is characterized in that: left brake shoe (4) and right braking hoof piece (5) are symmetric arrangement, and structure is identical.
3, brake with drum type floating brake shoe bidirectional propulsion structure, comprise break body (1), break body (1) is made up of braking hub (2), friction plate (3), left brake shoe (4), right braking hoof piece (5), extension spring (6), hinge pillar (7) and cam (8), left side brake shoe (4) and right braking hoof piece (5) flexibly connect by hinge pillar (7), and cam (8) is arranged between left brake shoe (4) and the right braking hoof piece (5); It is characterized in that: left brake shoe (4) and right braking hoof piece (5) can center on hinge pillar (7) and move; In this side of hinge pillar (7), between left brake shoe (4) and right braking hoof piece (5), second cam (12) is set; When braking, make cam (8) and second cam (12) produce action synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201002305U CN201284804Y (en) | 2008-10-10 | 2008-10-10 | Bidirectional pushing structure brake with drum type floating brake shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201002305U CN201284804Y (en) | 2008-10-10 | 2008-10-10 | Bidirectional pushing structure brake with drum type floating brake shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284804Y true CN201284804Y (en) | 2009-08-05 |
Family
ID=40949789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201002305U Expired - Lifetime CN201284804Y (en) | 2008-10-10 | 2008-10-10 | Bidirectional pushing structure brake with drum type floating brake shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201284804Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408234B (en) * | 2008-10-10 | 2010-07-28 | 谭富春 | Brake with drum type floating brake shoe bidirectional propulsion structure |
| CN105570349A (en) * | 2016-01-25 | 2016-05-11 | 天津职业技术师范大学 | Pneumatic drum-type floating cam balanced wheel brake capable of achieving gap self-adjustment |
| CN106895094A (en) * | 2017-04-10 | 2017-06-27 | 湖北中尔轮式制动车桥有限公司 | A kind of side-mounted circumferential holding brake apparatus of truck |
| CN106979260A (en) * | 2017-04-10 | 2017-07-25 | 湖北中尔轮式制动车桥有限公司 | A kind of side-mounted circumferential hold tightly of truck brakes vehicle bridge |
-
2008
- 2008-10-10 CN CNU2008201002305U patent/CN201284804Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408234B (en) * | 2008-10-10 | 2010-07-28 | 谭富春 | Brake with drum type floating brake shoe bidirectional propulsion structure |
| CN105570349A (en) * | 2016-01-25 | 2016-05-11 | 天津职业技术师范大学 | Pneumatic drum-type floating cam balanced wheel brake capable of achieving gap self-adjustment |
| CN105570349B (en) * | 2016-01-25 | 2018-01-12 | 天津职业技术师范大学 | Pneumatic drum type floating cam balance self-gap-regulating wheel drag |
| CN106895094A (en) * | 2017-04-10 | 2017-06-27 | 湖北中尔轮式制动车桥有限公司 | A kind of side-mounted circumferential holding brake apparatus of truck |
| CN106979260A (en) * | 2017-04-10 | 2017-07-25 | 湖北中尔轮式制动车桥有限公司 | A kind of side-mounted circumferential hold tightly of truck brakes vehicle bridge |
| CN106895094B (en) * | 2017-04-10 | 2023-02-17 | 湖北中尔轮式制动车桥有限公司 | Side-mounted circumferential holding brake device of truck |
| CN106979260B (en) * | 2017-04-10 | 2023-02-24 | 湖北中尔轮式制动车桥有限公司 | Side-mounted circumferential holding brake axle of truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090805 Effective date of abandoning: 20081010 |