CN203655976U

CN203655976U - Brake shoe block

Info

Publication number: CN203655976U
Application number: CN201320891505.2U
Authority: CN
Inventors: 张斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-06-18
Anticipated expiration: 2023-12-31

Abstract

The utility model discloses a brake shoe block, which comprises a shoe, a friction lining and a transition clamping block, wherein the shoe is integrally formed by an arc-shaped framework and a supporting part which extends from the concave arc surface of the framework to the center, one end of the shoe is a hinged end with the end surface provided with a semicircular groove, and the other end is a free end with the planar end surface; the friction lining is arranged on the convex arc surface of the framework; one end of the transition clamping block is provided with a groove, the end surface of the other end is a plane, the transition clamping block sleeves the free end of the shoe through the groove, and the groove is used for accommodating a compensation gasket; and the transition block and the compensation gasket are fixed to the free end of the shoe through countersunk screws. The brake shoe block effectively compensates the brake clearance caused by the abraded friction lining and brake drum by additionally arranging the compensation gasket on the free end of the shoe, prolongs the service life of the friction lining and the brake shoe block, and reduces the replacing times of the brake shoe block.

Description

A kind of shoe piece

Technical field

The utility model relates to break field, particularly a kind of shoe piece.

Background technique

Vehicle is Modern Traffic most convenient, applies maximum means of transportation, and break is most important safety member on vehicle, and the braking ability of vehicle directly affects the driving safety of automobile.Drum brake low cost and meet traditional design, be widely used, it comprises brake drum, shoe piece, rest pin, return spring and actuator etc., it is opened friction brake drum outward by shoe piece and realizes brake, there is following shortcoming in conventional drum brake: the wear limit scope of the friction facing on (1) shoe piece is little, when friction facing may wear to after the limit, need to change in time, otherwise have a potential safety hazard, therefore the replacing of friction facing is more frequent, changes trouble and cost high; (2) after brake drum wearing and tearing, gap between itself and friction facing cannot compensate, cause braking gap to continue to increase, even if the friction facing more renewing or shoe piece, its life-span also can be shorter and shorter, under equal conditions, it is more frequent that the brake drum having worn and torn causes friction facing to be changed, and be still difficult to compensation for the braking gap increasing, easily cause brake failure quick, while causing needing emergency braking, have potential safety hazard.

For above-mentioned technological deficiency, be still necessary to invent a kind of shoe piece that can carry out to the abrasion of friction facing and brake drum effective compensation.

Model utility content

The utility model, in order to overcome prior art defect, has been invented a kind of shoe piece, and it has can effective compensation friction facing and the wearing and tearing of brake drum, eliminate braking gap, the advantage such as simple in structure and safe and reliable.

For solving the problems of the technologies described above, the utility model adopts following technological scheme:

A kind of shoe piece, it comprises: shoes and friction facing, described shoes is by being the skeleton of circular arc with one-body molded from the described skeleton concave arc surface supporting portion that the heart extends wherein, and one end of described shoes is the rounded end that end face is provided with semicircle shape groove, the other end is that end face is the free end of plane; Described friction facing is arranged in described skeleton convex arc surface; Wherein: also comprise that an one end is provided with the transition fixture block that the end face of groove and the other end is plane, described transition fixture block is sheathed on the free end of described shoes by its groove, and its groove is used for holding compensate gasket.

Preferably, the described transition fixture block shape that takes the shape of the letter U, and in the middle of its end face, be provided with a countersunk head through hole that extends through groove, the free end of described shoes is provided with a screw corresponding with the countersunk head through hole of described transition fixture block, described transition fixture block is fixed on the free end of described skeleton by sunk screw accordingly, and the two side inlay card of its groove is on the free-ended side of described shoes, accordingly, in the middle of described compensate gasket, be provided with the through hole corresponding with the countersunk head through hole of described transition fixture block and the free end screw of described shoes.

Preferably, described countersunk head through hole is taper counter sink.

Preferably, the jointing place of the end face of described transition fixture block and groove two side is respectively arranged with two knuckles.

Preferably, described compensate gasket is square-shaped, and it comprises the specification of multiple different-thickness.

Preferably, the thickness specification of described compensate gasket comprises 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm and 4mm.

The utility model compared with prior art, has following beneficial effect:

1, a kind of shoe piece of the utility model adds compensate gasket to increase its wear limit by outer the distance that increases friction facing by the free end in shoes, the braking gap that the wearing and tearing of effective compensation friction facing and brake drum cause, can improve the whole service life of shoe piece.

2, the further advantage of the utility model is the structure that need not change original braking device, only needs to change shoe piece structure of the present utility model, and brake wearing clearance just can be compensated.

3, the utility model further advantage be by sunk screw, compensate gasket and transition fixture block to be fixed, its change adjust simple and convenient.

4, further advantage manufacturing process is simple for the utility model, with low cost, can reduce replacing number of times and the use amount of shoe piece and friction facing, and market popularization value is high.

5, the utility model further advantage be to be provided with the compensate gasket of different-thickness specification to carry out corresponding braking gap compensation for the different wear stages of friction pads and brake drum.

Accompanying drawing explanation

Fig. 1 is the perspective view of a kind of shoe piece of the utility model;

Fig. 2 is the three-dimensional exploded view of a kind of shoe piece of the utility model;

Fig. 3 is the schematic perspective view of the combination of a kind of shoe piece of the utility model and brake camshaft;

Fig. 4 is the plan view of accompanying drawing 3 under braking state;

Wherein:

1, shoes; 11, screw;

2, friction facing;

3, transition fixture block; 31, countersunk head through hole;

4, compensate gasket;

5, sunk screw;

6, brake camshaft.

Embodiment

Further describe the utility model referring to accompanying drawing and in conjunction with embodiment, to make those skilled in the art can implement according to this with reference to specification word, but be to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present utility model " on ", D score, " left side ", " right side " be all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technological scheme of the utility model.

Embodiment 1

As shown in Figure 1 or 2, a kind of shoe piece, comprise: shoes 1, friction facing 2, transition fixture block 3 and compensate gasket 4, wherein: shoes 1 is by being the skeleton of circular arc with one-body molded from the described skeleton concave arc surface supporting portion that the heart extends wherein, one end of shoes 1 is the rounded end that end face is provided with semicircle shape groove, the other end is that end face is the free end of plane, and free-ended four sides are plane and vertical with end face; Friction facing 2 is the circular arc demihull shape corresponding with shoes 1 skeleton convex globoidal, and its correspondence is arranged on the convex globoidal of shoes 1 skeleton.The end face that transition fixture block 3 one end are provided with groove and the other end is plane, its shape that takes the shape of the letter U, and its bottom portion of groove is smooth plane, the size of its groove is corresponding to can be fastened on free end with the free-ended size of shoes 1, the joint of the end face of transition fixture block 3 and the two side of groove is respectively arranged with two knuckles, make its transition round and smooth, when when work, its knuckle can reduce brake camshaft 6 and rotates and the contact friction force of shoe piece, in the middle of the end face of one end that transition fixture block 3 is plane, be provided with the countersunk head through hole 31 extending through in groove, it is taper counter sink, in the middle of the free-ended end face of shoes 1, be provided with screw 11 corresponding to the countersunk head through hole 31 on transition fixture block 3, transition fixture block 3 is sheathed on the free end of shoes 1, its groove two side fits in respectively the free-ended upper and lower bi-side of shoes 1, and transition fixture block 3 is fixed on the free end of shoes 1 by sunk screw 5.Between the free-ended end face of shoes 1 and the groove of transition fixture block 3, can be used for placing compensate gasket 4, compensate gasket 4 is square-shaped and corresponding with free-ended end surface shape, in the middle of it, be provided with through hole corresponding to countersunk head through hole 31 and the free-ended screw 11 of shoes 1 of transition fixture block 3, to facilitate sunk screw 5 through its through hole, it to be fixed on the free-ended end face of shoes 1 and the groove of transition fixture block 3.Compensate gasket 4 can be set to multiple different-thickness specification, and the compensate gasket 4 thickness specifications that the utility model is conventional are 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm and 4mm.

In the time that the brake drum of drum brake (figure depending on) and friction facing 2 also do not wear and tear, between the free-ended end face of shoes 1 and the groove of transition fixture block 3, do not need to place compensate gasket 4, directly transition fixture block 3 is fixed on the free end of shoes 1, make the free-ended end face of shoes fit in the diapire of transition fixture block 3 grooves, then the utility model that does not add compensate gasket 4 is directly installed in drum brake, drum brake just can normally be worked.In the time there are wearing and tearing or reach wear limit in the brake drum of drum brake and friction facing 2, the braking gap that can produce by concrete wear extent is placed the compensate gasket 4 of suitable thickness accordingly between the free-ended end face of shoes 1 and the groove of transition fixture block 3, then the utility model is installed in drum brake to eliminate braking gap.As shown in Figure 3, two shoe pieces of the present utility model are installed in the drum brake of being braked by camshaft, two shoe pieces are added with respectively compensate gasket 4, while making like this brake camshaft 6 cam end be arranged between the end face of transition fixture block 3 of two shoe pieces, because compensate gasket 4 has been equivalent to thicken the thickness of brake camshaft 6 cam part, therefore the distance when distance ratio that the friction facing 2 on shoe piece outwards opens does not add compensate gasket 4 is large, and the compensate gasket of different-thickness specification can also be used in combination, increase applicability.As shown in Figure 4 when brake camshaft 6 rotates after certain angle, its shoes 1 that promotes shoe piece drives friction facing 2 further outwards to open to act on brake drum, compensate gasket 4 has been equivalent to increase the radial length of brake camshaft 6 cam end, when brake camshaft 6 turns over identical angle, it is larger than not adding distance before compensate gasket 4 to be added with distance that friction facing after compensate gasket 42 finally outwards opens, therefore the braking gap that its energy effective compensation friction facing 2 or brake drum cause because of wearing and tearing, make it under identical condition, still can act on brake drum, play braking action.According to the abrasion condition of the brake drum of the friction facing 2 on two hoof pieces and correspondence, the compensate gasket 4 that adds respectively identical or different thickness on two shoe pieces obtains after compensation the friction sticking patch 2 of two shoe pieces, keeps contacting with brake drum when under the effect of brake camshaft 6, both friction sticking patch 2 outwards open as far as possible simultaneously.Because compensate gasket 4 can increase the outer distance of opening of friction facing 2, so it can increase the wear limit of friction facing 2, take motorcycle and electric motor car as embodiment, while adopting consistent brake camshaft 7 structure, if do not added compensate gasket 4, the wear limit narrow range of friction facing 2, general wear extent is about 1.5mm, reach after wear limit, its internal layer cannot contact with brake drum, does not reach the effect of brake; By adding after compensate gasket 4, friction lining 2 internal layer that skin cannot work after being worn again originally, can continue to act on brake drum, and therefore the wear limit of final friction facing 2 can almost reach the thickness of whole friction facing 2; Originally normally use the abrasion limit and change out the friction facing 2 of scrapping, by using method of the present utility model, coordinate sides in two of the free end plane of shoes, process with the utility model in the suitable attachment face of U-shaped transition fixture block 3, also can install back again, continue normal use, braking quality is constant, reaches the object that extends shoe piece and 2 working lifes of friction facing.

Embodiment 2

As the utility model of embodiment 1, it not only can process but also can improve original shoe piece again, in order to be adapted to little change of the present utility model, the free end facet of the shoes 1 of original shoe piece is taked to be appropriate to the height that the utility model requires, on facet, process accordingly a screw 11, just can transition fixture block 3 and compensate gasket 2 be installed on shoes and be used by sunk screw 5, not need to change the overall structure of original braking device.In the time there are certain wearing and tearing in brake drum; brake drum is subject to the arc surface of friction facing 2 friction portions can be dented because of wearing and tearing; and it is constant not to be subject to the arc surface protection that friction facing 2 rubs; on the arc surface of brake drum, just there will be step like this; when shoe piece of the present utility model is installed; may there is interference with the step of brake drum; the mode of available emery wheel reconditioning or upper machined into brake drum internal diameter boss; remove the interference position of brake drum; after assembling; rotate brake drum, check braking gap is also adjusted to the brake requirement that meets vehicle.The utility model manufacturing process is simple, and it is convenient to change, and with low cost, market popularization value is high.

Disclosed is above only specific embodiment of the utility model; but; the utility model is not limited thereto; the changes that any person skilled in the art can think of; as by riveted joint compensate gasket, the compensate gasket of splicing, or directly the compensate gasket of different-thickness is fixedly welded on to shoes free end plane or side etc. by the shoe piece different and all should falls into protection domain of the present utility model.

Claims

1. a shoe piece, it comprises: shoes and friction facing, described shoes is by being the skeleton of circular arc with one-body molded from the described skeleton concave arc surface supporting portion that the heart extends wherein, and one end of described shoes is the rounded end that end face is provided with semicircle shape groove, the other end is that end face is the free end of plane; Described friction facing is arranged in described skeleton convex arc surface; It is characterized in that: also comprise that an one end is provided with the transition fixture block that the end face of groove and the other end is plane, described transition fixture block is sheathed on the free end of described shoes by its groove, and its groove is also for holding compensate gasket.

2. shoe piece according to claim 1, it is characterized in that: the described transition fixture block shape that takes the shape of the letter U, and in the middle of its end face, be provided with a countersunk head through hole that extends through groove, the free end of described shoes is provided with a screw corresponding with the countersunk head through hole of described transition fixture block, described transition fixture block is fixed on the free end of described skeleton by sunk screw accordingly, and the two side inlay card of its groove is on the free-ended side of described shoes, in the middle of described compensate gasket, be provided with the through hole corresponding with the countersunk head through hole of described transition fixture block and the free-ended screw of described shoes accordingly.

3. shoe piece according to claim 2, is characterized in that: described countersunk head through hole is taper counter sink.

4. shoe piece according to claim 2, is characterized in that: the jointing place of the end face of described transition fixture block and groove two side is respectively arranged with two knuckles.

5. shoe piece according to claim 2, is characterized in that: described compensate gasket is square-shaped, and it comprises the specification of multiple different-thickness.

6. shoe piece according to claim 5, is characterized in that: the thickness specification of described compensate gasket comprises 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm and 4mm.