CN102829103B - Left brake assembly for engineering vehicle - Google Patents
Left brake assembly for engineering vehicle Download PDFInfo
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- CN102829103B CN102829103B CN201110175717.6A CN201110175717A CN102829103B CN 102829103 B CN102829103 B CN 102829103B CN 201110175717 A CN201110175717 A CN 201110175717A CN 102829103 B CN102829103 B CN 102829103B
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- hoof
- neck
- pin
- return spring
- outside
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Abstract
The invention discloses a left brake assembly for an engineering vehicle, and relates to the field of brakes on left sides of engineering vehicles. Inner leading-shoe reinforcing ribs (99), outer leading-shoe reinforcing ribs (97), outer lateral leading-shoe auxiliary reinforcing ribs (96) and middle leading-shoe auxiliary reinforcing ribs are arranged on a leading shoe (2); inner trailing-shoe reinforcing ribs (34), outer trailing-shoe reinforcing ribs (35), outer lateral trailing-shoe auxiliary reinforcing ribs (36) and middle trailing-shoe auxiliary reinforcing ribs (33) are arranged in a trailing shoe (3); an asymmetric cam of a camshaft (1) is mounted between a trailing-shoe roller (39) and a leading-shoe roller (77); and a return spring (4) is hooked on a leading-shoe spring hanging pin (80) and a trailing-shoe spring hanging pin (66), and an outer lateral double-return spring (5) and inner lateral double-return springs (6) are hooked on a leading-shoe double-return spring pin sleeve (90) and a trailing-shoe double-return spring pin sleeve (63). The left brake assembly for the engineering vehicle is provided with the multiple reinforcing ribs and accordingly is high in strength, the camshaft with the asymmetric structure is high in thrust, and the multiple return springs are high in return torque.
Description
Technical field
Engineering truck of the present invention relates to the brake field be assembled into by each component be arranged on on the left of engineering truck with left brake assembly.
Background technique
Engineering truck only uses a return spring with on left brake assembly in the past, then lead hoof, slow from hoof seating velocity, and return spring is yielding; In the past at neck hoof and be not designed with stiffening rib from hoof, then make neck hoof and yielding from hoof, braking effect is poor; Camshaft corresponded to neck hoof and from hoof cam convex surface area equation in the past, correspond to neck hoof and amass also equal from hoof cam recess surface, the cam of this symplex structure, neck hoof Braking efficiency is reduced, for overcoming above-mentioned all shortcomings, should to the engineering truck return spring of left break, neck hoof and the design making the improvement of outstanding essence from the structure of hoof and the cam structure of camshaft, to improve intensity and the Braking efficiency of the left brake assembly of engineering truck.
Summary of the invention
The object of this invention is to provide the left brake assembly of a kind of engineering truck, leading hoof and from the inwall of hoof, be added with interior stiffening rib, outer stiffening rib, middle assistant reinforcement muscle and outside assistant reinforcement muscle respectively, strengthen neck hoof and the object from hoof intensity to reach; At neck hoof with from hook between hoof, return spring, the two return spring in outside, the two return spring in inner side are housed, increase neck hoof to reach and from closing force between hoof, make neck hoof and get back to rapidly the original position before braking from hoof; There is cam convex surface area corresponding to neck hoof to be greater than to the cam design of camshaft and be less than dissymmetrical structure from cam recess surface area corresponding to hoof, to reach the object strengthening neck hoof Braking efficiency from cam convex surface area corresponding to hoof, cam recess surface area that neck hoof is corresponding.
The left brake assembly of engineering truck, it is by camshaft, neck hoof, from hoof, return spring, the two return spring in outside, the two return spring in inner side, lining, brake backing plate, left air chamber support, left adjustment arm, neck hoof roller pin, from hoof roller pin, neck hoof roller, from hoof roller, neck hoof hoof pin, from hoof hoof pin, check plate and dust-proof cover composition, stiffening rib in neck hoof is had in neck hoof inwall, the outer stiffening rib of neck hoof, assistant reinforcement muscle and the middle assistant reinforcement muscle of neck hoof outside neck hoof, having stiffening rib in hoof in hoof inwall, stiffening rib from hoof, assistant reinforcement muscle and from assistant reinforcement muscle in the middle of hoof outside hoof, be installed on from being installed on from the outside of hoof from hoof roller pin hole and inner side from hoof roller pin hole from hoof roller pin in hoof roller, in the outside neck hoof roller pin hole that the neck hoof roller pin be installed in neck hoof roller is installed on neck hoof and inner side neck hoof roller pin hole, from hoof hoof pin be installed on from hoof hoof pin mount from hoof hoof pin mounting hole and brake backing plate right inside outer from hoof hoof pin mounting hole, left inside side from hoof hoof pin mounting hole, neck hoof hoof pin is installed in the neck hoof hoof pin mounting hole of neck hoof hoof pin mount and the right outside side neck hoof hoof pin mounting hole of brake backing plate, left inside side are led in hoof hoof pin mounting hole, and check plate is arranged on from hoof hoof pin card groove and neck hoof hoof pin card groove by locking gasket, fastening check plate bolt, the cam of camshaft is arranged on between hoof roller and neck hoof roller, the optical axis of camshaft is installed in brake backing plate camshaft mounting hole and left air chamber support camshaft mounting hole, cam shaft spline is installed in the inner splined hole of left adjustment arm, and jump ring is installed in camshaft draw-in groove, the return spring left spring hook of return spring and the right carbine of return spring respectively hook be contained in neck hoof hanging bolt neck hoof hanging bolt draw-in groove in and from hoof hanging bolt from hoof hanging bolt draw-in groove, the two ends of the two return spring in two ends and inner side of the two return spring in outside respectively hook are contained in neck hoof double back position spring pin sleeve pipe and from the spring pin sleeve pipe of hoof double back position.
In order to strengthen neck hoof and the intensity from hoof, neck hoof inwall inside and outside the neck hoof in the neck hoof that the circular arc connected is parallel to each other between stiffening rib and the outer stiffening rib of neck hoof be connected with assistant reinforcement muscle in the middle of neck hoof in groove between two stiffening ribs, in neck hoof, be connected to assistant reinforcement muscle outside neck hoof outside stiffening rib and outside the outer stiffening rib of neck hoof.
The circular arc connected from hoof inwall be parallel to each other from stiffening rib in hoof with from being connected with from assistant reinforcement muscle in the middle of hoof inside and outside hoof in two stiffening rib grooves between stiffening rib hoof, being connected to assistant reinforcement muscle outside hoof outside stiffening rib in hoof and outside stiffening rib hoof.
Cam and cam shaft spline is connected at the optical axis two ends of camshaft, cam is non-symmetry structure, cam convex surface size corresponding to neck hoof is from cam convex surface area corresponding to hoof, and the cam recess surface area that neck hoof is corresponding is less than from cam recess surface area corresponding to hoof.Jump ring is installed with in the camshaft jump-ring slot of cam shaft spline outer end, in case the camshaft in the brake backing plate cam mounting hole being installed on brake backing plate, in the left air chamber support camshaft mounting hole of left air chamber support and in the left adjustment arm inner splined hole of left tune arm makes axial float, the lining be arranged on optical axis makes that the cam of camshaft is alternate with brake backing plate to be separated, adjustment pad is arranged between left air chamber support and left adjustment arm, adjusts left air chamber support and left adjustment arm gap between the two.
Neck hoof hoof pin is arranged in the neck hoof hoof pin mounting hole of neck hoof hoof pin mount, in the right outside side neck hoof hoof pin mounting hole of brake backing plate and in the neck hoof hoof pin mounting hole of left inside side, from hoof hoof pin be arranged on from hoof hoof pin mount from hoof hoof pin mounting hole, the right outside side of brake backing plate in hoof hoof pin mounting hole and left inside side from hoof hoof pin mounting hole.
The neck hoof hoof pin card groove neutralization that check plate two ends are snap-fit at neck hoof hoof pin respectively from hoof hoof pin from hoof hoof pin card groove, in the locking gasket bolt hole that fastening check plate screw is installed on locking gasket, in the check plate bolt hole of check plate and in the check plate tapped hole of brake backing plate, so that fixing neck hoof hoof pin and from hoof hoof pin.
Return spring is by the return spring left spring coil of return spring intermediate draw bar with its left and right sides, the right spring coil composition of return spring, return spring left spring hook is connected with in the left spring coil outer end of return spring, the right carbine of return spring is connected with in return spring right spring coil outer end, return spring left spring hook hook is contained in the neck hoof hanging bolt draw-in groove of neck hoof hanging bolt, the right carbine hook of return spring be contained in from hoof hanging bolt from hoof hanging bolt draw-in groove, neck hoof hanging bolt is installed in the neck hoof hanging bolt hole on neck hoof, from hoof hanging bolt be installed on from hoof from hoof hanging bolt hole, having from hoof hanging bolt hole from the outer stiffening rib of hoof, from hoof double back position spring pin hole with assist erection opening from hoof, the outer stiffening rib of neck hoof has neck hoof hanging bolt hole, neck hoof double back position spring pin hole and neck hoof assist erection opening.
The two right spring coil of return spring of the two left spring coil of return spring in outside and outside that the two return spring in outside is connected by the two return spring intermediate draw bar in outside and both sides thereof forms, the two return spring left spring hook hook in outside be connected outward with the two left spring coil of return spring in outside is contained in be led on the spring pin sleeve pipe of hoof double back position, and the two right carbine hook of return spring in outside be connected outward with the two right spring coil of return spring in outside is contained in from the spring pin sleeve pipe of hoof double back position.The two return spring in inner side is identical with the two return spring structure in outside, and installation method is identical.
The neck hoof double back position spring pin installed in the neck hoof double back position spring pin sleeve pipe pin-and-hole of the neck hoof double back position spring pin sleeve pipe on neck hoof is installed in the neck hoof double back position spring pin hole of neck hoof; From on hoof from hoof double back position spring pin sleeve pipe install in the spring pin sleeve pipe pin-and-hole of hoof double back position be installed on from the spring pin hole of hoof double back position from hoof double back position spring pin.
The neck hoof roller pin that neck hoof installs is installed in outside neck hoof roller pin hole and inner side neck hoof roller pin hole, neck hoof roller pin is installed in the neck hoof roller pin hole of neck hoof roller, neck hoof roller pin snap ring is installed on neck hoof roller pin draw-in groove, to prevent neck hoof roller pin axial float, neck hoof roller is arranged in neck hoof roller mounting slot.
Outside is installed on from hoof roller pin hole and inner side from hoof roller pin hole from hoof roller pin what install from hoof, from hoof roller pin be installed on from hoof roller from hoof roller pin hole, be installed on from hoof roller pin draw-in groove from hoof rolling pin snap ring, to prevent from, from hoof roller pin axial float, being arranged in from hoof roller mounting slot from hoof roller.
In the vehicle bridge bolt mounting holes of brake backing plate, be coated with vehicle bridge bolt, brake backing plate is fixed in vehicle bridge.
Install in the dust-proof cover tapped hole of tapped hole and dust-proof cover at the dust-proof cover of brake backing plate, be coated with dust-proof cover bolt, make dust-proof cover be arranged on brake backing plate, dust-proof cover can carry out dust-proof to left brake of engineering vehicle inside.
In the dust-proof cover plugging hole of dust-proof cover, blocking is installed, enters in left brake of engineering vehicle with dust protection by dust-proof cover plugging hole, can also inwardly observe neck shoe friction plate and the abrasion condition from shoe friction plate from dust-proof cover plugging hole.
In the neck hoof rivet hole of neck hoof and in the neck shoe friction plate rivet hole of neck shoe friction plate, riveted joint has rivet, and neck shoe friction plate is riveted on neck hoof.
From hoof from hoof rivet hole and from shoe friction plate from shoe friction plate rivet hole riveted joint have rivet, make to be riveted on from hoof from shoe friction plate.
Engineering truck of the present invention is neck hoof by left brake assembly advantage and has many places stiffening rib respectively from hoof, and intensity is high; The cam of camshaft is non-symmetry structure, and the camshaft convex surface that neck hoof is corresponding is greater than from camshaft convex surface corresponding to hoof, and the neck hoof roller ratio that the cam of camshaft promotes is large from the Driving force hoof roller, then make engineering truck strong with left brake braking force; Have employed return spring, the two return spring of the two return spring in outside and inner side, then during spring contraction, the aligning torque provided is large, from neck hoof and can get back to original position rapidly from hoof.
Accompanying drawing explanation
Fig. 1: the left brake assembly schematic three dimensional views of engineering truck.
Fig. 2: the three-dimensional exploded perspective view that camshaft 1 axially installs on brake backing plate 13, left air chamber support 15 and left adjustment arm 18.
Fig. 3: neck hoof 2 and the brake backing plate 13 installed from hoof 3, neck hoof roller pin 76, neck hoof roller 77, from hoof roller pin 37, from hoof roller 39 and neck hoof hoof pin 79, from hoof hoof pin 46, the three-dimensional exploded perspective view of check plate 48.
Fig. 4; Return spring 4, the two return spring 6 of the two return spring 5 in outside and inner side are arranged on neck hoof 2 and the three-dimensional exploded perspective view from hoof 3.
Fig. 5: neck shoe friction plate 72, be arranged on neck hoof 2 and from the three-dimensional exploded perspective view hoof 3 from shoe friction plate 73 and dust-proof cover 69.
Embodiment
See each accompanying drawing, the left brake assembly of engineering truck, it is by camshaft 1, neck hoof 2, from hoof 3, return spring 4, the two return spring 5 in outside, the two return spring 6 in inner side, lining 12, brake backing plate 13, left air chamber support 15, left adjustment arm 18, neck hoof roller pin 76, from hoof roller pin 37, neck hoof roller 77, from hoof roller 39, neck hoof hoof pin 79, from hoof hoof pin 46, check plate 48 and dust-proof cover 69 form, stiffening rib 99 in neck hoof is had in neck hoof 2 inwall, the outer stiffening rib 97 of neck hoof, assistant reinforcement muscle 96 and the middle assistant reinforcement muscle of neck hoof outside neck hoof, having stiffening rib 34 in hoof in hoof 3 inwall, stiffening rib 35 from hoof, assistant reinforcement muscle 36 and from assistant reinforcement muscle 33 in the middle of hoof outside hoof, be installed on from being installed on from the outside of hoof 3 from hoof roller pin hole 27 and inner side from hoof roller pin hole 25 from hoof roller pin 37 in hoof roller 39, in the outside neck hoof roller pin hole 88 that the neck hoof roller pin 76 be installed in neck hoof roller 77 is installed on neck hoof 2 and inner side neck hoof roller pin hole, from hoof hoof pin 46 be installed on from hoof hoof pin mount 31 from hoof hoof pin mounting hole 32 and the right inner side of brake backing plate 13 from hoof hoof pin mounting hole 45, left inside side from hoof hoof pin mounting hole 42, neck hoof hoof pin 79 is installed in the neck hoof hoof pin mounting hole 82 of neck hoof hoof pin mount 78 and the right outside side neck hoof hoof pin mounting hole 87 of brake backing plate 13, left inside side are led in hoof hoof pin mounting hole 86, and check plate 48 is arranged on from hoof hoof pin card groove 47 and neck hoof hoof pin card groove by locking gasket 50, fastening check plate bolt 52, the cam of camshaft 1 is arranged on between hoof roller 39 and neck hoof roller 77, the optical axis 9 of camshaft 1 is installed in brake backing plate camshaft mounting hole 14 and left air chamber support camshaft mounting hole 16, cam shaft spline 10 is installed in the inner splined hole 19 of left adjustment arm 18, and jump ring 21 is installed in camshaft draw-in groove 11, the return spring left spring hook 53 of return spring 4 and the right carbine 57 of return spring respectively hook be contained in neck hoof hanging bolt 80 neck hoof hanging bolt draw-in groove 93 in and from hoof hanging bolt 66 from hoof hanging bolt draw-in groove 92, the two ends of the two return spring 6 in two ends and inner side of the two return spring 5 in outside respectively hook are contained in neck hoof double back position spring pin sleeve pipe 90 and from hoof double back position spring pin sleeve pipe 63.
See Fig. 4, neck hoof 2 inwall inside and outside the neck hoof in the neck hoof that the circular arc connected is parallel to each other between stiffening rib 99 and the outer stiffening rib 97 of neck hoof be connected with assistant reinforcement muscle in the middle of neck hoof in groove 98 between two stiffening ribs, in neck hoof, be connected to assistant reinforcement muscle 96 outside neck hoof outside stiffening rib 99 and outside the outer stiffening rib 97 of neck hoof.
See Fig. 1, Fig. 3 and Fig. 4, the circular arc connected from hoof 3 inwall be parallel to each other from stiffening rib in hoof 34 with from being connected with from assistant reinforcement muscle 33 in the middle of hoof inside and outside hoof in two stiffening rib grooves 67 between stiffening rib hoof 35, being connected to assistant reinforcement muscle 36 outside hoof outside stiffening rib in hoof 34 and outside stiffening rib hoof 35.
See Fig. 2, cam and cam shaft spline 10 is connected at optical axis 9 two ends of camshaft 1, cam is non-symmetry structure, and cam convex surface 7 area that neck hoof is corresponding is greater than from cam convex surface area corresponding to hoof, and cam recess surface 8 area that neck hoof is corresponding is less than from cam recess surface area corresponding to hoof.
Jump ring 21 is installed with in cam shaft spline 10 outer end camshaft jump-ring slot 11, in the brake backing plate cam mounting hole 14 that the optical axis 9 of camshaft 1 is installed on brake backing plate 13 and in the left air chamber support camshaft mounting hole 16 of left air chamber support 15, the cam shaft spline 10 of camshaft 1 is installed in the left adjustment arm inner splined hole 19 of left adjustment arm 18, and the lining 12 be arranged on the optical axis 9 of camshaft 1 is installed between the cam of camshaft 1 and brake backing plate 13; Adjustment pad 20 is arranged on the camshaft 1 between left air chamber support 15 and left adjustment arm 18.
See Fig. 3, neck hoof hoof pin 79 is arranged in the neck hoof hoof pin mounting hole 82 of neck hoof hoof pin mount 78, in the right outside side neck hoof hoof pin mounting hole 87 of brake backing plate 13 and in left inside side neck hoof hoof pin mounting hole 86, from hoof hoof pin 46 be arranged on from hoof hoof pin mount 31 from hoof hoof pin mounting hole 32, the right outside side of brake backing plate 13 in hoof hoof pin mounting hole 45 and left inside side from hoof hoof pin mounting hole 42.
As shown in Figure 3, the neck hoof hoof pin card groove neutralization that check plate 48 two ends are snap-fit at neck hoof hoof pin 79 respectively from hoof hoof pin 46 from hoof hoof pin card groove 47, fastening check plate bolt 52 is installed in the locking gasket hole 51 of locking gasket 50, the check plate bolt hole of check plate 48 49 is interior and in the check plate bolt thread hole 44 of brake backing plate 13, locking gasket 50 is arranged on check plate 48.
See Fig. 4, in the left spring coil of return spring 54 that return spring 4 is installed on respectively by return spring intermediate draw bar 55 and its two ends, left and right and the right spring coil 56 of return spring, return spring left spring coil 54 outer end is connected with return spring left spring hook 53, and return spring right spring coil 56 outer end is connected with the right carbine 57 of return spring.
Return spring left spring hook 53 hook is contained in the neck hoof hanging bolt draw-in groove 93 of neck hoof hanging bolt 80, return spring right carbine 57 hook be contained in from hoof hanging bolt 66 from hoof hanging bolt draw-in groove 92.
Neck hoof 2 on neck hoof hanging bolt 80 be installed on neck hoof 2 on neck hoof hanging bolt hole 94 in, from hoof 3 from hoof hanging bolt 66 be installed on from hoof 3 from hoof hanging bolt hole 28.
The outer stiffening rib 97 of the neck hoof of neck hoof 2 has from hoof hanging bolt hole 94, leads hoof double back position spring pin hole 95 and assist erection opening from hoof; Having from the outer stiffening rib 35 of hoof 3 from hoof hanging bolt hole 28, from hoof double back position spring pin hole 29 with assist erection opening 30 from hoof.
See Fig. 4, two return spring intermediate draw bar about 60 two ends, outside of the two return spring 5 in outside are connected with the two right spring coil 61 of return spring in the outside pair left spring coil of return spring 59 and outside respectively, two return spring left spring hook 58 hook in outside be connected with two return spring left spring coil 59 outer end, outside is contained in be led on the neck hoof double back position spring pin sleeve pipe 90 of hoof 2, and two return spring right carbine 62 hook in outside be connected with two return spring right spring coil 61 outer end, outside is contained in from hoof double back position spring pin sleeve pipe 63.
The two return spring 6 in inner side is identical with two both return springs 5 structure in outside, and installation method is identical.
The neck hoof double back position spring pin 81 installed in the neck hoof double back position spring pin sleeve pipe pin-and-hole 91 of the neck hoof double back position spring pin sleeve pipe 90 on neck hoof 2 is installed in the neck hoof double back position spring pin hole 95 of neck hoof 2; From on hoof 3 from hoof double back position spring pin sleeve pipe 63 install in hoof double back position spring pin sleeve pipe pin-and-hole 64 be installed on from hoof double back position spring pin hole 29 from hoof double back position spring pin 65.
See Fig. 3, the neck hoof roller pin 76 on neck hoof 2 is installed in the neck hoof roller pin hole 84 of neck hoof roller 77, is installed with neck hoof roller pin snap ring 85 in the neck hoof roller pin draw-in groove 89 of neck hoof roller pin 76; From on hoof 3 from hoof roller pin 37 be installed on from hoof roller 39 from hoof roller pin hole 40, being installed with from hoof roller pin snap ring 41 from hoof roller pin draw-in groove 38 from hoof roller pin 37.Be arranged on from hoof roller mounting slot 26 from hoof roller 39.
See Fig. 2 and Fig. 3, in the vehicle bridge bolt mounting holes 22 of brake backing plate 13, be coated with vehicle bridge bolt, brake backing plate 13 is fixed in vehicle bridge.
See Fig. 2 and Fig. 5, install in the dust-proof cover tapped hole 71 of tapped hole 23 and dust-proof cover 69 at the dust-proof cover of brake backing plate 13, be coated with dust-proof cover bolt, dust-proof cover 69 is arranged on brake backing plate 13.
See Fig. 5, in the dust-proof cover plugging hole 70 of dust-proof cover 69, blocking 68 is installed.
See Fig. 3 and Fig. 5, rivet in the neck hoof rivet hole 24 on neck hoof 2 and in the neck shoe friction plate rivet hole 74 of neck shoe friction plate 72 and have rivet, make neck shoe friction plate 72 be riveted on neck hoof 2; From on hoof 3 from hoof rivet hole and from shoe friction plate 73 from shoe friction plate rivet hole 75 riveted joint have rivet, make to be riveted on from hoof 3 from shoe friction plate 73.
Neck hoof hoof pin mount 78 is installed in the hoof key seat groove 43 of brake backing plate 13 and from hoof hoof pin mount 31.
Claims (11)
1. the left brake assembly of engineering truck, it is by camshaft (1), neck hoof (2), from hoof (3), return spring (4), the two return spring (5) in outside, the two return spring (6) in inner side, lining (12), brake backing plate (13), left air chamber support (15), left adjustment arm (18), neck hoof roller pin (76), from hoof roller pin (37), neck hoof roller (77), from hoof roller (39), neck hoof hoof pin (79), from hoof hoof pin (46), check plate (48) and dust-proof cover (69) composition, it is characterized in that there is stiffening rib (99) in neck hoof in neck hoof (2) inwall, the outer stiffening rib (97) of neck hoof, assistant reinforcement muscle (96) and the middle assistant reinforcement muscle of neck hoof outside neck hoof, having stiffening rib (34) in hoof in hoof (3) inwall, stiffening rib (35) from hoof, assistant reinforcement muscle (36) and from assistant reinforcement muscle (33) in the middle of hoof outside hoof, be installed on from being installed on from the outside of hoof (3) from hoof roller pin hole (27) and inner side from hoof roller pin hole (25) from hoof roller pin (37) in hoof roller (39), the neck hoof roller pin (76) be installed in neck hoof roller (77) is installed on outside neck hoof roller pin hole (88) of neck hoof (2) and inner side is led in hoof roller pin hole, from hoof hoof pin (46) be installed on from hoof hoof pin mount (31) from hoof hoof pin mounting hole (32) and the right inner side of brake backing plate (13) from hoof hoof pin mounting hole (45), left inside side is from hoof hoof pin mounting hole (42), neck hoof hoof pin (79) is installed in neck hoof hoof pin mounting hole (82) of neck hoof hoof pin mount (78) and hoof hoof pin mounting hole (87) is led in the right outside side of brake backing plate (13), in left inside side neck hoof hoof pin mounting hole (86), check plate (48) is by locking gasket (50), fastening check plate bolt (52) is arranged on from hoof hoof pin card groove (47) and neck hoof hoof pin card groove, the cam of camshaft (1) is arranged on between hoof roller (39) and neck hoof roller (77), the optical axis (9) of camshaft (1) is installed in brake backing plate camshaft mounting hole (14) and left air chamber support camshaft mounting hole (16), cam shaft spline (10) is installed in the inner splined hole (19) of left adjustment arm (18), and jump ring (21) is installed in camshaft draw-in groove (11), the return spring left spring hook (53) of return spring (4) and the right carbine of return spring (57) respectively hook be contained in neck hoof hanging bolt (80) neck hoof hanging bolt draw-in groove (93) in and from hoof hanging bolt (66) from hoof hanging bolt draw-in groove (92), the two ends of the two return spring (6) in the two ends of the two return spring (5) in outside and inner side respectively hook are contained in neck hoof double back position spring pin sleeve pipe (90) and from hoof double back position spring pin sleeve pipe (63).
2. the left brake assembly of engineering truck according to claim 1, it is characterized in that being connected with assistant reinforcement muscle in the middle of neck hoof in two stiffening rib grooves (98) inside and outside the neck hoof in the neck hoof that the circular arc connected on neck hoof (2) inwall is parallel to each other between stiffening rib (99) and the outer stiffening rib (97) of neck hoof, in neck hoof, stiffening rib (99) outside and outer stiffening rib (97) outside of neck hoof are connected to assistant reinforcement muscle (96) outside neck hoof.
3. the left brake assembly of engineering truck according to claim 1, it is characterized in that the circular arc connected from hoof (3) inwall be parallel to each other from stiffening rib in hoof (34) with from being connected with from assistant reinforcement muscle (33) in the middle of hoof inside and outside hoof between two stiffening ribs in groove (67) between stiffening rib hoof (35), from stiffening rib in hoof (34) outside be connected to assistant reinforcement muscle (36) outside hoof outside stiffening rib hoof (35).
4. the left brake assembly of engineering truck according to claim 1, it is characterized in that being connected to cam and cam shaft spline (10) at optical axis (9) two ends of camshaft (1), cam is non-symmetry structure, cam convex surface (7) area that neck hoof is corresponding is greater than from cam convex surface area corresponding to hoof, and cam recess surface (8) area that neck hoof is corresponding is less than from cam recess surface area corresponding to hoof.
5. the left brake assembly of engineering truck according to claim 1, is characterized in that being installed with jump ring (21) in the camshaft draw-in groove (11) of cam shaft spline (10) outer end; Lining (12) on the optical axis (9) being arranged on camshaft (1) is installed between the cam of camshaft (1) and brake backing plate (13), the camshaft (1) between left air chamber support (15) and left adjustment arm (18) is provided with adjustment pad (20).
6. the left brake assembly of engineering truck according to claim 1, is characterized in that in the check plate bolt hole (49) of check plate (48), is coated with fastening check plate bolt (52) in the check plate bolt thread hole (44) of brake backing plate (13) and in the locking gasket hole (51) of locking gasket (50).
7. the left brake assembly of engineering truck according to claim 1, it is characterized in that return spring intermediate draw bar (55) two ends, left and right of return spring (4) are installed in the left spring coil of return spring (54) and the right spring coil of return spring (56) respectively, return spring left spring hook (53) hook that the left spring coil of return spring (54) outer end is connected with is contained in neck hoof hanging bolt draw-in groove (93) of neck hoof hanging bolt (80), the right carbine of return spring (57) hook that the right spring coil of return spring (56) outer end is connected be contained in from hoof hanging bolt (66) from hoof hanging bolt draw-in groove (92).
8. the left brake assembly of engineering truck according to claim 1, it is characterized in that in the neck hoof hanging bolt hole (94) of leading the neck hoof hanging bolt (80) on hoof (2) to be installed on neck hoof (2), from hoof (3) from hoof hanging bolt (66) be installed on from hoof (3) from hoof hanging bolt hole (28).
9. the left brake assembly of engineering truck according to claim 1, it is characterized in that two return spring intermediate draw bar (60) two ends, left and right, outside of the two return spring (5) in outside are connected with the two right spring coil of return spring (61) in the outside pair left spring coil of return spring (59) and outside respectively, two return spring left spring hook (58) hook in outside be connected with the two left spring coil of return spring (59) outer end, outside is contained in be led on neck hoof double back position spring pin sleeve pipe (90) of hoof (2), the two right carbine of return spring (62) hook in outside be connected with the two right spring coil of return spring (61) outer end, outside is contained in from hoof double back position spring pin sleeve pipe (63).
10. the left brake assembly of engineering truck according to claim 1, it is characterized in that the two return spring (6) in inner side is identical with outside both structures of two return spring (5), installation method is identical.
The left brake assembly of 11. engineering truck according to claim 1, it is characterized in that installing in tapped hole (23) and in the dust-proof cover tapped hole (71) of dust-proof cover (69) at the dust-proof cover of brake backing plate (13), by installing bolt, dust-proof cover (69) being arranged on brake backing plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110175717.6A CN102829103B (en) | 2011-06-17 | 2011-06-17 | Left brake assembly for engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110175717.6A CN102829103B (en) | 2011-06-17 | 2011-06-17 | Left brake assembly for engineering vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102829103A CN102829103A (en) | 2012-12-19 |
| CN102829103B true CN102829103B (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110175717.6A Active CN102829103B (en) | 2011-06-17 | 2011-06-17 | Left brake assembly for engineering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829103B (en) |
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| CN103047320A (en) * | 2012-12-20 | 2013-04-17 | 青特集团有限公司 | Bearing bridge leading-trailing type brake |
| CN103148128B (en) * | 2013-03-21 | 2016-04-06 | 江苏汤臣汽车零部件有限公司 | Lightweight brake backing plate and manufacturing process thereof |
| CN104455107A (en) * | 2013-09-24 | 2015-03-25 | 中国重汽集团济南动力有限公司 | Novel drum brake |
| CN103821854A (en) * | 2013-12-18 | 2014-05-28 | 青特集团有限公司 | Novel camshaft structure |
| CN109877705B (en) * | 2019-04-04 | 2024-01-02 | 吉安职业技术学院 | Conjugate cam error compensation device based on follow-up grinding |
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| JPS6324268Y2 (en) * | 1982-04-19 | 1988-07-04 | ||
| JPH1113798A (en) * | 1997-06-25 | 1999-01-22 | Nisshinbo Ind Inc | Shoe gap regulating device for drum brake |
| DE19858745A1 (en) * | 1998-12-18 | 2000-06-21 | Continental Teves Ag & Co Ohg | Self-adjusting automotive drum brake prevents a change in brake adjustment above a given pre-determined temperature |
| US20030024779A1 (en) * | 2001-08-02 | 2003-02-06 | Hosei Brake Ind. Co., Ltd | Dual-mode drum brake assembly having provision for preventing disengagement of members to be mutually engaged |
| CN1558996A (en) * | 2001-11-27 | 2004-12-29 | ���˹�����ײ�˹ | Duo-servo drum brake inside shoe adjusting device |
| EP1348883A2 (en) * | 2002-03-27 | 2003-10-01 | Nisshinbo Industries Inc. | Drum brake device with an automatic shoe clearance adjustment apparatus |
| JP2008045655A (en) * | 2006-08-15 | 2008-02-28 | Akebono Brake Ind Co Ltd | Drum brake device |
| CN201173262Y (en) * | 2008-02-18 | 2008-12-31 | 东风德纳车桥有限公司 | Automobile drum brake |
| CN201368160Y (en) * | 2009-02-20 | 2009-12-23 | 中国重汽集团济南动力有限公司 | Novel punching hoof assembly special for industrial and mining vehicles |
| TW201040407A (en) * | 2009-05-14 | 2010-11-16 | Sanyang Industry Co Ltd | Hydraulic drum brake mechanism |
| CN201582329U (en) * | 2009-12-09 | 2010-09-15 | 安徽江淮汽车股份有限公司 | Automobile wear-resistant and vibration-proof drum brake |
| CN201771996U (en) * | 2010-03-03 | 2011-03-23 | 陆美仙 | Drum brake keeping insides and outsides of brake shoes balanced |
| CN201779186U (en) * | 2010-07-12 | 2011-03-30 | 杨群英 | Brake shoe with bushings |
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|---|---|
| CN102829103A (en) | 2012-12-19 |
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