CN211343800U - Self-adjustable self-boosting type traveling drum brake with parking function - Google Patents
Self-adjustable self-boosting type traveling drum brake with parking function Download PDFInfo
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- CN211343800U CN211343800U CN201920878701.3U CN201920878701U CN211343800U CN 211343800 U CN211343800 U CN 211343800U CN 201920878701 U CN201920878701 U CN 201920878701U CN 211343800 U CN211343800 U CN 211343800U
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Abstract
The utility model discloses a but self-modulation's of taking parking function formula of relying on oneself driving drum brake. The parking brake device is additionally arranged on a self-energizing drum brake assembly with self-adjusting function, wherein a parking pull arm is hinged in a through hole formed in the upper part of a rear shoe rib of the rear brake shoe assembly through a pull arm pin, and the hinged part of the through hole is fixed and limited through a check ring; grooves are formed in the middle of the parking pull arm and the middle of a front-arranged shoe rib of the front-arranged shoe assembly, two ends of the parking push plate are respectively installed in the grooves in the middle of the parking pull arm and the middle of the front-arranged shoe rib of the front-arranged shoe assembly, one end of a parking pull cable is connected to the lower end of the braking pull arm, and the other end of the parking pull cable penetrates through the braking bottom plate assembly to be connected to a hand brake end of a vehicle chassis. The utility model discloses can make the vehicle that has self-energizing formula drum brake can realize manual parking, save the expense of independent development parking device, and the reliability is high.
Description
Technical Field
The utility model relates to a hydraulic pressure touches has self-energizing formula drum brake of clearance self-modulation function, has especially related to a self-energizing formula drum brake that requires to take hand braking parking requirement.
Background
The hydraulic self-boosting drum brake is mainly used on engineering vehicles and trailers with large loads and slow speeds, the braking is required to be effective and stable, and the self-boosting drum brake with the clearance self-adjusting function can well meet the use requirements of the vehicles.
However, the working environment of a conventional engineering truck or trailer is relatively severe, and the conventional self-boosting drum brake may be used on a steep mountain road or an uneven building site, and has high service braking efficiency and good reliability under a common condition. However, the mechanical parking (hand brake) device of such vehicles is often realized by a separate device, which results in:
firstly, the cost is higher: the mechanical parking device is independently designed and needs a special structure to realize, so that the cost is high;
secondly, the space utilization rate is low: the arrangement of the mechanical parking device needs to consider the spatial arrangement of the whole chassis, specially divide the position for placing the mechanical parking device and consider the connection problem of the peripheral related peripheral parts;
thirdly, the maintenance cost is high: the single mechanical parking device needs to be additionally maintained, and the maintenance cost is high;
in view of the above, in combination with the structure and function of the drum brake, the drum brake itself can integrate the service brake and the parking brake, but since the self-energizing drum brake has a compact structure, the space after the function device of the clearance self-adjusting mechanism is added is more complicated, and the arrangement of the manual parking device becomes more difficult.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of wasting resource and cost caused by independently designing a manual parking brake device in the prior art, the utility model aims to provide a self-adjustable self-boosting type service drum brake with a parking function, on the basis of the conventional service brake function, a self-boosting type drum brake is added with a mechanical brake device, the self-boosting type service drum brake can realize the simultaneous realization of two functions of service and parking on the premise that a vehicle using the self-boosting type drum brake can directly adopt one set of brake, and the parking can not influence the original service brake by directly adopting the structure, so that the cost and the space can be saved.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model discloses increase the parking brake device on taking self-modulation self-reinforcement formula drum brake assembly, take self-modulation self-reinforcement formula drum brake assembly include brake shoe assembly, brake wheel cylinder assembly, leading hoof assembly and rearmounted hoof assembly; the brake shoe assembly is arranged on the frame, the brake wheel cylinder assembly is fixedly arranged in the middle of the end face of the brake shoe assembly, the upper ends of the front shoe assembly and the rear shoe assembly are hinged to shoe supporting pins of the brake shoe assembly, the lower ends of the front shoe assembly and the rear shoe assembly are connected with a lower return spring through a gap adjuster assembly, and the front shoe assembly and the rear shoe assembly are arranged on two sides of the end face of the brake shoe assembly through pressure spring mechanisms; the parking brake device mainly comprises a parking pull arm and auxiliary parts, wherein the auxiliary parts comprise a pull arm pin, a check ring, a parking push plate and a parking cable; the parking pull arm is hinged in a through hole formed in the upper part of a rear-mounted tendon of the rear-mounted brake shoe assembly through a pull arm pin, and the hinged part of the through hole is fixed and limited through a check ring; the middle part of parking single arm-drag and the leading shoe muscle middle part of leading hoof assembly are seted up flutedly, and the groove at parking single arm-drag middle part and the leading shoe muscle middle part of leading shoe assembly is installed respectively at parking push pedal both ends, and parking cable one end is connected at the braking single arm-drag lower extreme, and the other end is connected to vehicle chassis's manual brake end.
The implementation of the parking function comprises: when the hand brake end of the vehicle chassis is pulled up, the parking cable is pulled to drive the parking pull arm to rotate around a pull arm pin on the rear shoe rib, the parking push plate is pushed to move forwards, the front shoe rib is pushed to move outwards until a friction plate of the front shoe assembly is attached to the brake drum, the brake pull arm is continuously pulled, the brake pull arm continuously rotates by taking the point O as a fulcrum, the rear shoe rib is pushed to move outwards, and the friction plate of the rear shoe assembly is also pressed against the brake drum; the vehicle is stably parked.
The gap self-adjusting mechanism device comprises a gap adjusting ratchet assembly, a gap adjusting pull wire assembly, a pull wire guide seat, a gap adjusting shifting plate, a shifting plate pin and a gap adjusting shifting plate return torsion spring, wherein the pull wire guide seat is hinged to the middle of a rear-arranged tendon of the rear-arranged hoof assembly through a sleeve pin, one end of the rear-arranged return spring axially penetrates through the sleeve pin to form hooking, the shifting plate pin is riveted in a rear-arranged tendon hole, the middle of the gap adjusting shifting plate is sleeved on the shifting plate pin, one end of the shifting plate is connected with the gap adjusting pull wire spring, and the other end of the shifting plate return torsion spring sleeved on the shifting plate pin is fixedly pressed on a ratchet shifting tooth of the gap adjusting device assembly.
The clearance self-adjusting function comprises that when a rear brake tendon moves backwards, a stay wire in the clearance adjusting stay wire assembly is driven to move upwards, a clearance shifting plate shifting tooth end rotates upwards slightly under the pulling force of the movement of the clearance adjusting stay wire assembly, the clearance adjusting shifting plate shifting tooth end drives a shifting tooth on the clearance adjuster ratchet assembly to rotate, the clearance X between a front friction plate and a rear friction plate and a brake drum is adjusted, and when a support piston of a brake wheel cylinder does not act on the rear tendon, the clearance adjusting shifting plate shifting tooth end rotates downwards to return under the action of a clearance adjusting shifting plate return torsion spring.
The utility model has the advantages that:
the utility model discloses a self-reinforcement formula drum brake of band gap self-modulation function increases mechanical parking device, realizes that a self-reinforcement formula drum brake realizes service brake and parking braking function simultaneously to realize friction disc and brake drum clearance self-modulation.
The utility model discloses for the self-energizing formula drum brake of conventional use, integrateed driving and parking function, solved the resource that independent design hand parking arresting gear led to the fact among the prior art and the extravagant problem of cost, and directly adopt this structure to carry out the parking can be to the reliable parking under original service braking produces the influence, practice thrift cost and space.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a right sectional view of fig. 1 with the wheel cylinder and the adjuster removed.
Fig. 3 is a three-dimensional schematic view illustrating the parking apparatus.
Fig. 4 is a lower right sectional view of fig. 1.
In the figure: the brake comprises a front shoe assembly 1, a parking push plate 2, a support piston 3, a brake wheel cylinder assembly 4, a gap adjusting pull wire assembly 5, a check ring 6, a rear upper return spring 7, a wire pulling guide seat 8, a parking pull arm 9, a rear shoe assembly 10, a shifting plate return torsion spring 11, a shifting plate pin 12, a gap adjusting shifting plate 13, a gap adjusting device assembly 14, a lower end return spring 15, a parking cable 16, a brake drum 17, a front shoe tendon 18, a pulling arm pin 19, a brake bottom plate assembly 20, a support pin 21, a rear shoe tendon 22, a rear brake shoe friction plate 23 and a front brake shoe friction plate 24.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a parking brake device is added to a self-adjusting self-energizing drum brake assembly, which comprises a brake bottom plate assembly 20, a brake wheel cylinder assembly 4, a front shoe assembly 1 and a rear shoe assembly 10; the brake bottom plate assembly 20 is installed on the frame, the brake wheel cylinder assembly 4 is fixedly installed in the middle of the end face of the brake bottom plate assembly 20, the upper ends of the front shoe assembly 1 and the rear shoe assembly 10 are hinged to a shoe supporting pin 21 of the brake bottom plate assembly 20, the lower ends of the front shoe assembly 1 and the rear shoe assembly 10 are connected through a gap adjuster assembly 14 and a lower return spring 15, and the front shoe assembly 1 and the rear shoe assembly 10 are installed on two sides of the end face of the brake bottom plate assembly 20 through pressure spring mechanisms with the same structure.
As shown in fig. 1, the parking brake device mainly comprises a parking pull arm 9 and auxiliary parts, wherein the auxiliary parts comprise a pull arm pin 19, a check ring 6, a parking push plate 2 and a parking cable 16; the parking pull arm 9 is hinged in a through hole formed in the upper portion of a rear-mounted tendon 22 of the rear-mounted brake shoe assembly 10 through a pull arm pin 19, the hinged position of the through hole is fixed and limited through a check ring 6, the check ring 6 is sleeved outside the pull arm pin 19, and two ends of the check ring 6 are respectively connected with the parking pull arm 9 and the rear-mounted tendon 22; the middle part of parking single arm-drag 9 and the leading shoe muscle 18 middle part of leading shoe assembly 1 are seted up flutedly, and the recess department at parking single arm-drag 9 middle part and the leading shoe muscle 18 middle part of leading shoe assembly 1 is installed respectively at parking push pedal 2 both ends, and parking cable 16 one end is connected at braking single arm-drag 9 lower extreme A point, as shown in figure 4, and the other end passes braking bottom plate assembly 20 and is connected to vehicle chassis's manual brake end.
A clearance self-adjusting mechanism device in a self-adjusting self-boosting drum brake is arranged on a rear shoe assembly 10 and is connected with a shoe supporting pin 21 on a brake bottom plate assembly 20.
As shown in fig. 1, 2 and 3, the process of performing parking braking by the self-energizing drum brake of the present invention is as follows: when the hand brake end of the vehicle chassis is pulled up, the parking cable 16 is pulled to drive the parking pull arm 9 to rotate around a pull arm pin 19 on a rear shoe rib 22, the parking push plate 2 is pushed to move forwards, the front shoe rib 18 is pushed to move outwards until a friction plate 24 of the front shoe assembly 1 is attached to the brake drum 17, the brake pull arm 9 is continuously pulled, the brake pull arm 9 continuously rotates by taking the point O as a fulcrum, and the rear shoe rib 22 is pushed to move outwards, so that the friction plate 23 of the rear shoe assembly 10 is also pressed against the brake drum 17; the vehicle is stably parked.
The clearance self-adjusting mechanism device comprises a clearance adjusting ratchet assembly 14, a clearance adjusting pull wire assembly 5, a pull wire guide seat 8, a clearance adjusting shifting plate 13, a shifting plate pin 12 and a clearance adjusting shifting plate return torsion spring 11, wherein the pull wire guide seat 8 is hinged to the middle of a rear-arranged shoe rib 22 of the rear-arranged shoe assembly 10 through a sleeve pin, one end of a rear-arranged upper return spring 7 axially penetrates through the sleeve pin to form a hook joint, the shifting plate pin is riveted in the rear-arranged shoe rib 22 hole, the middle of the clearance adjusting shifting plate 13 is sleeved on the shifting plate pin 12, one end of the shifting plate is connected with a spring of the clearance adjusting pull wire 5, and the other end of the shifting plate is fixedly pressed on a ratchet shifting tooth of the clearance adjusting device assembly 14 through the clearance adjusting shifting plate return torsion spring 11 sleeved on the.
As shown in fig. 1 and 4, the gap self-adjusting function includes that when the rear brake tendon 22 moves backwards, the pull wire in the gap-adjusting pull wire assembly 5 is driven to move upwards, the tooth shifting end of the gap-adjusting shifting plate 13 rotates upwards slightly under the pulling force of the movement of the gap-adjusting pull wire assembly 5, the tooth shifting end of the gap-adjusting shifting plate 13 drives the tooth shifting on the gap adjuster ratchet assembly 14 to rotate, the gap X between the front friction plate 24 and the rear friction plate 23 and the brake drum 17 is adjusted, and when the support piston 3 of the brake wheel cylinder does not act on the rear brake tendon 22, the tooth shifting end of the gap-adjusting shifting plate 13 rotates downwards and returns.
Therefore, the utility model discloses integrateed driving and parking function, solved the extravagant problem of resource and cost that the hand parking arresting gear of independent design caused among the prior art, and directly adopt this structure to carry out the parking and can not produce reliable parking under the influence to original service brake, practice thrift cost and space.
The above examples are for the description of the present invention, not for the limitation of the present invention, and any simple modification of the present invention all belongs to the protection scope of the present invention.
Claims (2)
1. The utility model provides a but self-modulation formula service drum brake of taking parking function which characterized in that: the self-adjusting self-boosting drum brake assembly comprises a brake bottom plate assembly (20), a brake wheel cylinder assembly (4), a front shoe assembly (1) and a rear shoe assembly (10); the brake shoe mechanism is characterized in that a brake bottom plate assembly (20) is mounted on a frame, a brake wheel cylinder assembly (4) is fixedly mounted in the middle of the end face of the brake bottom plate assembly (20), the upper ends of a front shoe assembly (1) and a rear shoe assembly (10) are hinged to a shoe supporting pin (21) of the brake bottom plate assembly (20), the lower ends of the front shoe assembly and the rear shoe assembly are connected with a lower return spring (15) through a gap adjuster assembly (14), and the front shoe assembly (1) and the rear shoe assembly (10) are mounted on two sides of the end face of the brake bottom plate assembly (20) through pressure spring mechanisms; the parking brake device mainly comprises a parking pull arm (9) and auxiliary parts, wherein the auxiliary parts comprise a pull arm pin (19), a check ring (6), a parking push plate (2) and a parking cable (16); the parking pull arm (9) is hinged in a through hole formed in the upper part of a rear shoe rib (22) of the rear shoe assembly (10) through a pull arm pin (19), and the hinged part of the through hole is fixed and limited through a check ring (6); the middle part of parking single arm-drag (9) and leading shoe muscle (18) middle part of leading hoof assembly (1) are seted up flutedly, and the groove at the leading shoe muscle (18) middle part of parking single arm-drag (9) middle part and leading shoe assembly (1) is installed respectively at parking push pedal (2) both ends, and parking cable (16) one end is connected at parking single arm-drag (9) lower extreme, and the other end is connected to vehicle chassis's manual brake end.
2. The self-adjustable self-energizing drum brake with parking function as claimed in claim 1, wherein: the self-adjusting self-energizing drum brake assembly comprises a gap adjusting device assembly (14), a gap adjusting pull wire assembly (5), a pull wire guide seat (8), a gap adjusting shifting plate (13), a shifting plate pin (12) and a gap adjusting shifting plate return torsion spring (11), wherein the pull wire guide seat (8) is hinged to the middle of a rear-arranged shoe tendon (22) of the rear-arranged shoe assembly (10) through a sleeve pin, one end of the rear-arranged upper return spring (7) axially penetrates through the sleeve pin to form hooking connection, the shifting plate pin is riveted in a hole of the rear-arranged shoe tendon (22), the middle of the gap adjusting shifting plate (13) is sleeved on the shifting plate pin (12), one end of the shifting plate is connected with a spring of the gap adjusting pull wire assembly (5), and the other end of the shifting plate pin is fixedly pressed on ratchet wheel shifting teeth of the gap adjusting device assembly (14) through the gap adjusting shifting plate return torsion spring (11) sleeved on the shifting plate pin (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920878701.3U CN211343800U (en) | 2019-06-12 | 2019-06-12 | Self-adjustable self-boosting type traveling drum brake with parking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920878701.3U CN211343800U (en) | 2019-06-12 | 2019-06-12 | Self-adjustable self-boosting type traveling drum brake with parking function |
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| CN211343800U true CN211343800U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920878701.3U Active CN211343800U (en) | 2019-06-12 | 2019-06-12 | Self-adjustable self-boosting type traveling drum brake with parking function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206832A (en) * | 2019-06-12 | 2019-09-06 | 浙江亚太机电股份有限公司 | With parking function can self-regulated self-boosting type drive a vehicle drum brake |
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2019
- 2019-06-12 CN CN201920878701.3U patent/CN211343800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206832A (en) * | 2019-06-12 | 2019-09-06 | 浙江亚太机电股份有限公司 | With parking function can self-regulated self-boosting type drive a vehicle drum brake |
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