CN203822909U

CN203822909U - Roller component for brake shoes of engineering van

Info

Publication number: CN203822909U
Application number: CN201420177582.6U
Authority: CN
Inventors: 丁志明; 池兆威; 孙成钢; 徐敏
Original assignee: TAIZHOU SHENZHOU TRANSMISSION TECHNOLOGY Co Ltd
Current assignee: TAIZHOU SHENZHOU TRANSMISSION TECHNOLOGY Co Ltd
Priority date: 2014-04-03
Filing date: 2014-04-03
Publication date: 2014-09-10
Anticipated expiration: 2024-04-03

Abstract

The invention relates to a roller component mounted on roller mounting blocks of brake shoes and pushed through a cam on a cam shaft, in particular to a roller component for brake shoes of an engineering van. Fan-shaped catches (1) and snap spring mounting grooves (7) for mounting snap springs (6) are arranged at the left end and the right end of a plug pin main body (2); a left roller oil seal (3) and a right roller oil seal (5) are respectively mounted in the inner ring walls on the left side and the right side in a plug pin penetration hole of a roller (4); a plug pin main body (2) is mounted in the plug pin penetration hole of the roller (4) in a clearance fit manner; the roller (4) is enabled to roll on the plug pin main body (2). The roller component has a simple structure, the roller can freely move on the plug pin main body, a drum brake of the engineering van is effectively braked by the brake of the engineering van, and effective brake is realized.

Description

Engineering truck break brake shoe roll wheel assembly

Technical field

The utility model engineering truck break brake shoe relates to the roll wheel assembly promoting by the cam of camshaft being arranged on brake shoe roller mounting blocks with roll wheel assembly, belong to the roll wheel assembly field on engineering truck break brake shoe.

Background technique

Engineering truck break brake shoe is in the past permanently connected and is integral by the roller on roll wheel assembly and latch main body, cam on camshaft is often produced to very large reaction force, easily make roll wheel assembly and camshaft be damaged, therefore, should design a kind of roll wheel assembly that roller can be rolled in latch main body.

Summary of the invention

The purpose of this utility model is to provide a kind of engineering truck break brake shoe roll wheel assembly, after cam pushing rolling wheels assembly upper roller on the camshaft rotating, its latch main body can make the brake shoe of the left and right sides open, thereby after reaching the friction plate making on brake shoe and rubbing mutually with engineering truck brake drum inner ring wall, realizes the object of brake.

Engineering truck break brake shoe roll wheel assembly, it is mainly comprised of latch main body, the left oil sealing of roller, roller, the right oil sealing of roller and jump ring, latch main body left end links the fan-shaped catch that has both sides evagination, make the fan-shaped catch of latch main body left end be positioned at annulus wall outside outside roller internal baffle, in the jump ring mounting groove of the circle indent having at latch main body right-hand member, jump ring is installed, to make latch main body right-hand member be positioned at annulus wall outside outside roller exterior siding; In left and right sides inner ring wall in the latch mounting hole of roller, be separately installed with the left oil sealing of roller and the right oil sealing of roller, at the latch mounting hole internal clearance of roller, be coated with ordinatedly latch main body, roller can be rolled in latch main body.

This engineering truck break brake shoe is described as follows with roll wheel assembly structure design principle:

The jump ring mounting groove right-hand member of latch main body from the left mounting hole left end of latch main body of the roller internal baffle of brake shoe penetrates, the fan shape baffle of latch main body is blocked in outside the left surface of the left mounting hole of latch main body of roller internal baffle, in latch main body, install roller again, after making roller be positioned at inside the left mounting hole of latch main body inner side and the right mounting hole of latch main body between the two, the last jump ring mounting groove right-hand member that allows again latch main body penetrates the right mounting hole of latch main body of roller exterior siding, with jump ring, be installed in the jump ring mounting groove of the latch main body right-hand member stretching out after the right mounting hole of latch main body, the two ends, left and right of latch main body are limited on the roller internal baffle and roller exterior siding of brake shoe, after the camshaft being rotated rotates the cam of its one end, outside cam two ends, projection just promotes to be arranged on two rollers on brake shoe, roller drives latch main body to extrapolate to both sides again, two brake shoes are outwards opened, the friction plate of brake shoe outer surface rubs mutually with the inner ring wall of engineering truck brake drum respectively, thereby engineering truck is braked, after camshaft is rotated again, when cam two ends inner concave contacts with roller, now, two brake shoes are just inwardly retracted by the Returnning spring on it, two brake shoes are inwardly resetted, brake is eliminated engineering truck and can continues to travel.

This engineering truck break brake shoe is simple in structure with roll wheel assembly, and roller can freely turn round in latch main body, can make engineering truck break can effectively brake the brake drum of engineering truck, realizes brake effectively.

Accompanying drawing explanation

Fig. 1: roll wheel assembly 15 three-dimensional group assembling structure schematic diagram for engineering truck break brake shoe.

Fig. 2: roll wheel assembly 15 three-dimensional exploded structural representations for engineering truck break brake shoe.

Fig. 3: engineering truck break brake shoe is the decomposing schematic representation in the roller mounting blocks 14 interior installations of engineering truck break brake shoe 8 with roll wheel assembly 15.

Embodiment

Referring to Fig. 1, Fig. 2 and Fig. 3, engineering truck break is roll wheel assembly 15 for brake shoe, it is mainly comprised of latch main body 2, the left oil sealing 3 of roller, roller 4, the right oil sealing 5 of roller and jump ring 6, latch main body 2 left ends link the fan-shaped catch 1 that has both sides evagination, make the fan-shaped catch 1 of latch main body 2 left ends be positioned at roller internal baffle 9 annulus wall outsides, outside, in the jump ring mounting groove 7 of the circle indent having at latch main body 2 right-hand members, jump ring 6 is installed, to make latch main body 2 right-hand members be positioned at roller exterior siding 10 annulus wall outsides, outside; In left and right sides inner ring wall in the latch mounting hole of roller 4, be separately installed with the left oil sealing 3 of roller and the right oil sealing 5 of roller, at the latch mounting hole internal clearance of roller 4, be coated with ordinatedly latch main body 2, roller 4 can be rolled in latch main body 2.

Referring to Fig. 1 and Fig. 2, latch main body 2 is cylindrical pin, and the both sides of the fan-shaped catch 1 that its left end links are respectively the flat catch in conplane evagination fan shape, with vertical being connected as a body of latch main body 2 left ends.

Roller 4 is ring roller, and roller 4 cylindrical anchor rings are fitted on the cam 16 of camshaft one end; Latch mounting hole in roller 4 is cylindrical hole, and its internal diameter is greater than the external diameter of latch main body 2; Both are the ring oil sealing of equal diameters the right oil sealing of the left oil sealing of roller 3 and roller 5, respectively with roller 4 in latch mounting hole two ends drive fit.

Referring to Fig. 3, two brake shoes 8 are connected with its roller internal baffle 9, roller exterior siding 10 respectively, both form roller mounting blocks 14 to be the connected roller internal baffle of U-shaped structure 9 and roller exterior siding 10, and roller 4 is arranged in the roller mounting slot 13 between roller internal baffle 9 and roller exterior siding 10.

In roller internal baffle 9, have the left mounting hole 11 of circular latch main body, in roller exterior siding 10, have the right mounting hole 12 of circular latch main body.

Claims

1. engineering truck break roll wheel assembly (15) for brake shoe, it is mainly by latch main body (2), the left oil sealing of roller (3), roller (4), the right oil sealing of roller (5) and jump ring (6) form, it is characterized in that latch main body (2) left end links the fan-shaped catch (1) that has both sides evagination, make the fan-shaped catch (1) of latch main body (2) left end be positioned at annulus wall outside, roller internal baffle (9) outside, in the jump ring mounting groove (7) of the circle indent having at latch main body (2) right-hand member, jump ring (6) is installed, to make latch main body (2) right-hand member be positioned at annulus wall outside, roller exterior siding (10) outside, in left and right sides inner ring wall in the latch mounting hole of roller (4), be separately installed with the left oil sealing of roller (3) and the right oil sealing of roller (5), latch mounting hole internal clearance at roller (4) is coated with latch main body (2) ordinatedly, and roller (4) can above be rolled in latch main body (2).

2. engineering truck break roll wheel assembly (15) for brake shoe, it is characterized in that latch main body (2) is for cylindrical pin, the both sides of the fan-shaped catch (1) that its left end links are respectively the flat catch in conplane evagination fan shape, with vertical being connected as a body of latch main body (2) left end.

3. engineering truck break roll wheel assembly (15) for brake shoe, is characterized in that roller (4) is ring roller, and roller (4) cylindrical anchor ring is fitted on the cam (16) of camshaft one end.

4. engineering truck break roll wheel assembly (15) for brake shoe, is characterized in that the latch mounting hole in roller (4) is cylindrical hole, and its internal diameter is greater than the external diameter of latch main body (2).

5. engineering truck break roll wheel assembly (15) for brake shoe, both are the ring oil sealing of equal diameters to it is characterized in that the left oil sealing of roller (3) and the right oil sealing of roller (5), respectively with roller (4) in latch mounting hole two ends drive fit.