CN105526282A

CN105526282A - Double roller and synchronous shoe braking system

Info

Publication number: CN105526282A
Application number: CN201510774388.5A
Authority: CN
Inventors: 关瑞鹏
Original assignee: Shuangyashan Juqiang Compartment Manufacturing Co Ltd
Current assignee: Shuangyashan Juqiang Compartment Manufacturing Co Ltd
Priority date: 2015-11-14
Filing date: 2015-11-14
Publication date: 2016-04-27

Abstract

A double roller and synchronous shoe braking system comprises a braking disc, a supporting frame, two shoes, an upper shoe supporting assembly, a lower shoe supporting assembly and return springs; braking pads on the two shoes are matched with the braking disc; the upper shoe supporting assembly comprises shoe supporting rods, an eccentric shaft assembly, hinged shafts and an open pin, and the eccentric shaft assembly comprises a rotating shaft and an involute cam. According to the invention, the structure design of double rollers and eccentric shafts is adopted, the double rollers and the eccentric shafts drive the shoes on the two sides for braking synchronously, the braking arc surfaces of the shoes and the inner arc surface of the braking disc are matched for tensioning braking, the contact area between the shoes and the braking disc is guaranteed, and therefore synchronous braking can be realized, the problems that the contact area between braking pads and braking discs is small, eccentric wear of the braking pads easily occurs and the temperature of the braking discs easily becomes high in the prior art can be solved, and service life of the braking system can be prolonged.

Description

The synchronous shoes brake system of two rolling bar

Technical field

The present invention relates to motor-rehicle braking system field, especially a kind of two synchronous shoes brake system of rolling bar.

Background technique

What the brake system of the lorry that current highway travels all adopted is horizontal bar eccentric shaft, lower supporting type brake system, its structure is two, the left and right brake shoe iron in brake basin, fulcrum is done by hinging shaft in the bottom of its shoes, the top of shoes is rolled by eccentric shaft and is pushed push rod one end, the push rod the other end hinged left and right shoes coordinates braking brake with brake basin, its deficiency is the bottom of shoes is hinged support, shoes bottom does not have clamping force to brake basin, the top of shoes is only had not have clamping force to brake basin, thus braking brake effect is restricted, especially when frequent braking brake, brake block on shoes forms eccentric wear, brake basin easily produces high temperature, so far fragile bearing, the wearing and tearing of tire are also large, reduce the working life of component and tire, easily there is potential safety hazard thus, the hand brake of heavy-duty vehicle is easy to failure, the braking distance of braking or the hand brake is long, the danger that vehicle travels is high.

Summary of the invention

The present invention is the deficiency solving prior art existence, provide a kind of two synchronous shoes brake system of rolling bar, this pair of synchronous shoes brake system of rolling bar, not only can synchronous braking brake, and can solve prior art exist brake block and brake basin area of contact few, the easy eccentric wear of brake block, brake basin easily produce the deficiency of high temperature, thus reach the object in the working life extending brake system.

The present invention solves the technological scheme that its problem is taked, comprise brake basin, supporting frame, shoes supporting component on two shoes, lower shoes supporting component, reset tension spring, wherein, brake block on described two shoes coordinates with described brake basin, described upper shoes supporting component is identical with lower shoes supporting component, above shoes supporting component is example, described upper shoes supporting component comprises shoes strut, eccentric shaft assembly, hinging shaft, cotter pin, one end and described two shoes of described shoes strut are hinged by hinging shaft, described cotter pin and described hinging shaft one end are located, described hinging shaft and being slidably matched with support frame as described above, shoes strut and support frame as described above are slidably matched, described eccentric shaft assembly comprises rotatingshaft and involute cam, there is involute cam one end of described rotatingshaft, the rotation diameter of axle on described rotatingshaft rolls with support frame as described above and coordinates, and it is spacing by jump ring, described involute cam is connected with the other end of described shoes strut, the two ends of described reset tension spring are connected with described shoes,

Support frame as described above there is the bolt hole fixing with lorry bridge, have axle bed, described axle bed has the unthreaded hole coordinated with the sliding bar in shoes strut, between described axle bed, have the unthreaded hole coordinated with the rotation diameter of axle in eccentric shaft assembly;

Described shoes strut has a rounded end and the slip diameter of axle, described rounded end has the hinging hole coordinated with described hinging shaft, described rounded end has the mounting groove coordinated with two shoes, the end face of the described slip diameter of axle is and involute cam fitting surface;

Described two shoes are identical, for shoes, described shoes one side connects shoes frame, and the another side of described shoes connects brake block, two unthreaded holes described shoes frame having two unthreaded holes hinged with the rounded end on described shoes strut and be connected with described reset tension spring;

Described eccentric shaft assembly has the involute cam coordinated with described shoes strut, what be connected with described involute cam is rotatingshaft, and described rotatingshaft has and rotates the diameter of axle, jump-ring slot, described rotatingshaft one end is the gear coordinated with lorry wheel cylinder;

The working principle of the two synchronous shoes brake system of rolling bar of described lorry is, first support frame as described above is fastened in vehicle bridge by vehicle bridge fixed bolt hole, gear on described rotatingshaft is connected with lorry wheel cylinder, when lorry wheel cylinder provides power, rotatingshaft on described eccentric shaft assembly drives involute cam to rotate, described involute cam promotes described shoes strut to two Slideslips, described shoes stretching brake basin under the effect of described shoes strut, freight car braking; When lorry wheel cylinder eliminates power, rotatingshaft on described eccentric shaft assembly drives involute cam to set back, and described shoes drives shoes strut to set back under the effect of reset tension spring, and shoes is separated with brake basin, brake release, now completes whole brake process.

The invention has the beneficial effects as follows, what the present invention adopted is two rolling bar eccentric shaft structure designs, because two rolling bar eccentric shaft synchronously props up the shoes braking brake of both sides, the tensioning that coincide of the brake cambered surface of shoes and the intrados of brake disc is braked, ensure that the area of contact of shoes and brake disc, thus obtain synchronous braking brake, solve prior art exist brake block and brake basin area of contact few, the easy eccentric wear of brake block, brake basin easily produce the deficiency of high temperature, reach the beneficial effect in the working life extending brake system.

Accompanying drawing illustrates:

Below in conjunction with accompanying drawing, the present invention is further described.

Fig. 1, be topology view of the present invention;

Fig. 2, plan view for supporting frame of the present invention;

Fig. 3, A-A sectional view for Fig. 1 of the present invention;

Fig. 4, be shoes pole structure figure of the present invention;

Fig. 5, plan view for Fig. 4 of the present invention;

Fig. 6, be shoes structural drawing of the present invention;

Fig. 7, plan view for Fig. 6 of the present invention;

Fig. 8, be shoes pole structure figure of the present invention;

Fig. 9, left view for Fig. 8 of the present invention;

Embodiment:

The specific embodiment of the present invention, with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, comprises brake basin 1, supporting frame 3, two shoes 2, 16, upper shoes supporting component 9, lower shoes supporting component, reset tension spring 7, 17, wherein, with reference to Fig. 1, Fig. 7, Fig. 8, described two shoes 2, brake block 29 on 16 coordinates with described brake basin 1, and described upper shoes supporting component is identical with lower shoes supporting component, and above shoes supporting component is example, with reference to Fig. 1, Fig. 9, described upper shoes supporting component 9 comprises shoes strut 5, 13, eccentric shaft assembly 9, hinging shaft 3, 14, cotter pin 15, described shoes strut 5, one end of 13 and described two shoes 2, 16 by hinging shaft 3, 14 is hinged, described cotter pin 15 and described hinging shaft 3, 14 location, one end, described hinging shaft 3, 14 and be slidably matched with support frame as described above 4, shoes strut 5, 13 are slidably matched with support frame as described above 4, with reference to Fig. 1, Fig. 9, described eccentric shaft assembly 9 comprises rotatingshaft and involute cam 19, and there is involute cam 19 one end of described rotatingshaft, and the rotation diameter of axle 33 on described rotatingshaft rolls with support frame as described above 4 and coordinates, and spacing by jump ring, described involute cam 19 and described shoes strut 5, the other end of 13 connects, described reset tension spring 7, the two ends of 17 are connected with described shoes,

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 9, support frame as described above 4 there is the bolt hole 18 fixing with lorry bridge, there is axle bed 8,11, described axle bed 8,11 there is the unthreaded hole coordinated with the sliding bar 6,12 in shoes strut 5,13, between described axle bed 8,11, have the unthreaded hole 10 coordinated with the rotation diameter of axle 30 in eccentric shaft assembly 9;

With reference to Fig. 1, Fig. 5, Fig. 6, described shoes strut 5,13 there are a rounded end and the slip diameter of axle, described rounded end there is the hinging hole 25 coordinated with described hinging shaft 3,14, described rounded end has the mounting groove 23,24 coordinated with two shoes 2,16, the end face 22 of the described slip diameter of axle 6,12 is and involute cam 19 fitting surface;

With reference to Fig. 1, Fig. 7, Fig. 8, described two shoes 2,16 identical, for shoes 2, described shoes 2 one side connects shoes frame 27,30, the another side of described shoes 2 connects brake block, two unthreaded holes 26 described shoes frame 27,30 having two unthreaded holes 28 hinged with the rounded end on described shoes strut 5,13 and be connected with described reset tension spring 7,17;

With reference to Fig. 1, Fig. 9, described eccentric shaft assembly 9 there is the involute cam 19 coordinated with described shoes strut 5,13, what be connected with described involute cam 19 is rotatingshaft, described rotatingshaft has and rotates the diameter of axle 33, jump-ring slot 31, described rotatingshaft one end is the gear 32 coordinated with lorry wheel cylinder;

The working principle of the two synchronous shoes brake system of rolling bar of described lorry is, first support frame as described above 4 is fastened in vehicle bridge by vehicle bridge fixed bolt hole 18, gear 32 on described rotatingshaft is connected with lorry wheel cylinder, when lorry wheel cylinder provides power, rotatingshaft on described eccentric shaft assembly 9 drives involute cam 19 to rotate, described involute cam 19 promotes described shoes strut 5,13 to two Slideslips, described shoes 2,16 stretching brake basin 1 under the effect of described shoes strut 5,13, freight car braking; When lorry wheel cylinder eliminates power, rotatingshaft on described eccentric shaft assembly 9 drives involute cam 19 to set back, described shoes 2,16 drives shoes strut 5,13 to set back under the effect of reset tension spring 7,17, shoes 2,16 is separated with brake basin, brake release, now completes whole brake process.

Claims

1. two synchronous shoes brake system of rolling bar, comprise brake basin, supporting frame, shoes supporting component on two shoes, lower shoes supporting component, reset tension spring, it is characterized in that: wherein, brake block on described two shoes coordinates with described brake basin, described upper shoes supporting component is identical with lower shoes supporting component, above shoes supporting component is example, described upper shoes supporting component comprises shoes strut, eccentric shaft assembly, hinging shaft, cotter pin, one end and described two shoes of described shoes strut are hinged by hinging shaft, described cotter pin and described hinging shaft one end are located, described hinging shaft and being slidably matched with support frame as described above, shoes strut and support frame as described above are slidably matched, described eccentric shaft assembly comprises rotatingshaft and involute cam, there is involute cam one end of described rotatingshaft, the rotation diameter of axle on described rotatingshaft rolls with support frame as described above and coordinates, and it is spacing by jump ring, described involute cam is connected with the other end of described shoes strut, the two ends of described reset tension spring are connected with described shoes.

2. the two synchronous shoes brake system of rolling bar of one according to claim 1, it is characterized in that: support frame as described above has the bolt hole fixing with lorry bridge, there is axle bed, described axle bed there is the unthreaded hole coordinated with the sliding bar in shoes strut, between described axle bed, have the unthreaded hole coordinated with the rotation diameter of axle in eccentric shaft assembly.

3. the two synchronous shoes brake system of rolling bar of one according to claim 1, it is characterized in that: described shoes strut has a rounded end and the slip diameter of axle, described rounded end there is the hinging hole coordinated with described hinging shaft, described rounded end has the mounting groove coordinated with two shoes, the end face of the described slip diameter of axle is and involute cam fitting surface.

4. the two synchronous shoes brake system of rolling bar of one according to claim 1, it is characterized in that: described two shoes are identical, for shoes, described shoes one side connects shoes frame, the another side of described shoes connects brake block, two unthreaded holes described shoes frame having two unthreaded holes hinged with the rounded end on described shoes strut and be connected with described reset tension spring.

5. the two synchronous shoes brake system of rolling bar of one according to claim 1, it is characterized in that: described eccentric shaft assembly has the involute cam coordinated with described shoes strut, what be connected with described involute cam is rotatingshaft, described rotatingshaft has and rotates the diameter of axle, jump-ring slot, described rotatingshaft one end is the gear coordinated with lorry wheel cylinder.

6. the two synchronous shoes brake system of rolling bar of one according to claim 1, it is characterized in that: the working principle of the two synchronous shoes brake system of rolling bar of described lorry is, first support frame as described above is fastened in vehicle bridge by vehicle bridge fixed bolt hole, gear on described rotatingshaft is connected with lorry wheel cylinder, when lorry wheel cylinder provides power, rotatingshaft on described eccentric shaft assembly drives involute cam to rotate, described involute cam promotes described shoes strut to two Slideslips, described shoes stretching brake basin under the effect of described shoes strut, freight car braking, when lorry wheel cylinder eliminates power, rotatingshaft on described eccentric shaft assembly drives involute cam to set back, and described shoes drives shoes strut to set back under the effect of reset tension spring, and shoes is separated with brake basin, brake release, now completes whole brake process.