CN218882850U

CN218882850U - Wet brake parking function structure for drive axle

Info

Publication number: CN218882850U
Application number: CN202320101601.6U
Authority: CN
Inventors: 沈四海; 沈军
Original assignee: Hefei Haiyuan Machinery Co Ltd
Current assignee: Hefei Haiyuan Machinery Co Ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-04-18
Anticipated expiration: 2033-02-02

Abstract

The utility model provides a wet brake parking function structure for transaxle relates to stopper technical field, include bolt one, baffle one, bolt two, baffle two, push away dish and pontic assembly, baffle one is through bolt fixed mounting on the pontic assembly, baffle two is through bolt two fixed mounting on pushing away the dish, and pushes away dish movable mounting between baffle one and pontic assembly. The utility model discloses, brake friction disc is work in sealed oil bath, and the porous fibrous face of friction disc both sides can be ensured to have one deck film oil to part friction disc and preforming all the time, prevents friction disc and preforming direct contact, can reduce to the minimum because of the friction produces wearing and tearing between the friction disc. The brake has stable working performance, does not need to be adjusted frequently, has longer service life which is generally 3-5 times that of a dry brake, and can not decline when used for more than three years.

Description

Wet brake parking function structure for drive axle

Technical Field

The utility model relates to a stopper technical field especially relates to a wet brake parking functional structure for transaxle.

Background

The drive axle assembly is an important component of all vehicles. The drive axle has the functions of: 1. reducing the speed and increasing the moment; 2. changing the power transmission direction to transmit power; 3. the left wheel and the right wheel rotate at different rotating speeds to meet the steering requirement; 4. bearing the weight of the frame and the body.

The brake is an important safety part of the whole vehicle, the domestic conventional industrial vehicle drive axle mostly adopts a drum brake or dry disc brake structure, the series of brakes have high heating value during braking, high temperature is easily generated to cause deformation of friction materials, and large installation space is required in part characteristics. Meanwhile, the dry brake is susceptible to the influence of the use environment, such as dust, rainwater, air humidity and high temperature, which all affect the braking performance, and the braking stability is not high.

In order to meet the increasing NVH noise requirements of customers and the requirements on the comfort and reliability of vehicles, a maintenance-free wet brake for a drive axle is developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the drum brake or the dry-type disc brake structure that exist among the prior art and giving out heat when braking higher, easily produce high temperature and lead to friction material to warp, the installation space that needs big on the spare part characteristics, and dry brake easily receives service environment influence, like dust, rainwater, air humidity, high temperature all can cause the influence to brake performance, the not high problem of braking stability, and the wet brake parking function structure for transaxle that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a wet brake parking function structure for transaxle, includes bolt one, baffle one, bolt two, baffle two, pushes away dish and pontic assembly, baffle one is through bolt one fixed mounting on the pontic assembly, baffle two is through bolt two fixed mounting on pushing away the dish, and pushes away dish movable mounting between baffle one and pontic assembly, even movable mounting has a plurality of friction discs between baffle one and the baffle two, and equal movable mounting has a locking disc between per two adjacent friction discs, friction disc axle center department pegs graft there is the semi-axis subassembly, and semi-axis subassembly activity pegs graft in the pontic assembly, even joint has a plurality of springs on the pontic assembly, and every spring all with push away dish fixed mounting.

Preferably, the bridge assembly is provided with a mounting hole in a clamping manner, and one end of the spring is clamped in the mounting hole.

Preferably, the half shaft assembly comprises an outer tooth surface end and an insertion shaft, and one end of the outer tooth surface end is fixedly connected with one end of the insertion shaft.

Preferably, an oil filling hole is formed in the axle center of the bridge assembly, and the insert shaft is inserted into the oil filling hole in an inserting mode.

Preferably, the inner side of the friction disc is provided with an inner tooth surface, and the end of the outer tooth surface is clamped with the inner tooth surface.

Preferably, a plurality of said springs are arranged annularly within the bridge assembly.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. the utility model discloses in, the brake friction disc is worked in sealed oil bath, and the porous fibrous face of friction disc both sides can be ensured to have one deck film oil to part friction disc and preforming all the time, prevents friction disc and preforming direct contact, can reduce to the minimum because of the friction produces wearing and tearing between the friction disc. The brake has stable working performance, does not need to be adjusted frequently, has longer service life which is generally 3-5 times that of a dry brake, and can not decline when used for more than three years.

2. The utility model discloses in, because of wet-type polydisc stopper is totally enclosed, elements such as preforming, friction disc, end plate and brake piston all install in the stopper casing, can avoid the influence of external moisture content, dust, impurity etc.. In addition, the brake adopts a brake hydraulic pump, when hydraulic oil enters the brake cylinder, the acting force of the piston for pushing the fixed disc and the friction disc is uniformly distributed, and the hydraulic pressure and the formed braking force are in linear change relationship. Therefore, the brake is rapid and stable, the brake performance is stable, and the safety is high.

3. The utility model discloses in, wet-type polydisc stopper has good heat dispersion for hydraulic drive, fluid circulation heat dissipation cooling, has reduced maintenance, has prolonged life. The cooling mode can be self-cooling or forced according to the braking strength. The self-cooling brake has no seal between the support shaft and the hub, and lubricating oil for lubricating the differential and the planetary wheel reducer can directly flow into the brake, so that the effect of cooling the brake disc simultaneously is achieved. Even if the vehicle is operated at a high speed, under a high load and with frequent braking, the braking effect is not reduced by heat generation.

4. The utility model discloses in, wet-type polydisc stopper adopts the multi-disc structure, and annular working area is big, can obtain great braking torque under less facing pressure. The pressure born by the element is reduced, and the unit specific pressure of the friction plate is small. The braking torque can be adjusted by changing the number of the friction pairs, and the serialization and the standardization of the friction pairs are easy to realize.

5. The utility model discloses in, for dry brake, wet-type polydisc stopper's initial cost expense is slightly higher, but because of this stopper have do not have wearing and tearing, do not need advantages such as frequent maintenance, performance long-term stability, can produce the effect that low maintenance cost guaranteed high productivity ratio. It is estimated that these additional investments can be recovered, typically in the order of half a year of operation, as measured by the cyclic maintenance costs incurred by the dry brakes and the costs incurred by routine repairs and parking losses. It is thus seen that a truck which remains in service can translate the time and expense lost from failure and repair into greater economic efficiency.

Drawings

Fig. 1 is a disassembly schematic view of a parking function structure of a wet brake for a drive axle according to the present invention;

fig. 2 is a cross-sectional view of the utility model provides a wet brake parking function structure for transaxle.

Illustration of the drawings: 1. a first thread; 2. a first baffle plate; 3. a friction disk; 4. a stopper disk; 5. a second bolt; 6. a second baffle plate; 7. pushing the disc; 8. a spring; 9. a half shaft assembly; 10. a bridge body assembly; 11. mounting holes; 12. and an oil filling hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a parking function structure of a wet brake for a drive axle comprises a first bolt 1, a first baffle plate 2, a second bolt 5, a second baffle plate 6, a pushing disc 7 and an axle body assembly 10, wherein the first baffle plate 2 is fixedly arranged on the axle body assembly 10 through the first bolt 1, the second baffle plate 6 is fixedly arranged on the pushing disc 7 through the second bolt 5, the pushing disc 7 is movably arranged between the first baffle plate 2 and the axle body assembly 10, a plurality of friction discs 3 are uniformly and movably arranged between the first baffle plate 2 and the second baffle plate 6, a stopping disc 4 is movably arranged between every two adjacent friction discs 3, a half axle component 9 is inserted in the axle center of each friction disc 3, the half axle components 9 are movably inserted in the axle body assembly 10, a plurality of springs 8 are uniformly clamped on the axle body assembly 10 and annularly arranged in the axle body assembly 10, each spring 8 is fixedly arranged with the pushing disc 7, each half axle component 9 comprises an outer tooth surface end 90 and an inserting shaft 91, one end of the outer tooth surface 90 is fixedly connected with one end of the inserting shaft 91, an oil injection hole 12 is formed in the axle center of the axle body assembly 10; an oil filling hole 12 is formed in the axle body assembly 10 between the first baffle plate 2 and the second baffle plate 6, when the oil pressure is larger than the initial pressure of the push disc 7, the push disc 7 moves backwards in the axial direction, a gap is formed between the stop disc 4 and the friction disc 3, and the half shaft assembly 9 drives the friction disc 3 to rotate and normally run. When the injected oil pressure is smaller than the initial pressure of the push disc 7, the push disc 7 moves forwards axially, so that the stop disc 4 and the friction disc 3 are braked to form deceleration braking.

Adopt integrate, modular assembly design, convenient installation on the transaxle assembly and with the independent cooperation of other parts on the transaxle to avoid having the cooperation with the transaxle to cross the definition or interfere the scheduling problem, guarantee the high reliability of this part assembly of little assembly. The wet brake assembly has compact structure, braking force far higher than that of products at the same level, safety and reliability, and can be arranged on a driving axle assembly for a tractor or a forklift with small volume.

As shown in fig. 1 and fig. 2, a mounting hole 11 is clamped on the bridge assembly 10, and one end of the spring 8 is clamped in the mounting hole 11, and the mounting hole 11 is convenient for limiting one end of the spring 8.

As shown in fig. 1 and 2, the inner side of the friction disc 3 is provided with an inner tooth surface 30, and the end 90 of the outer tooth surface is clamped with the inner tooth surface 30, so that the half shaft assembly 9 and the friction disc 3 are limited, and the half shaft assembly 9 can be decelerated by braking the friction disc 3.

The wet brake assembly adopts closed-loop finite element modeling and mimicry analysis from design to manufacture to realize strength optimization so as to improve the strength of parts such as a piston, a spring push sheet and the like and ensure stress reliability.

The wet brake assembly is subjected to full life cycle mimicry analysis, the parts and the sealing are comprehensively optimized from type selection to arrangement, and on the premise of ensuring the strength and the sealing reliability, the full life cycle is ensured to be free of damage, maintenance is avoided, and the high reliability of a braking part is ensured. The sealing ring adopts a special low-friction multi-channel rectangular GREEN structure to reduce the friction force between the oil seal and the sealing surface and improve the sliding life of the oil seal. According to the design maintenance-free mileage and the life cycle of the wet brake assembly, the axial fit clearance of the friction plate and the fixed plate is independently set, and the full life cycle setting of the wet brake is ensured.

The use method and the working principle of the device are as follows: the bridge assembly 10 is provided with a mounting hole 11 for mounting the spring 8, after the spring 8 is mounted on the bridge assembly 10, the spring 8 is provided with the pushing disc 7, the bolt II 5, the baffle II 6 and the pushing disc 7 are mounted on the bridge assembly 10 together, so that the bridge assembly 10 and the baffle component II 6 form a closed space, the pushing disc 7 axially moves in the closed space, and the required initial pressure is obtained through the pre-pressure of the spring 8.

An oil filling hole 12 is formed in the axle body assembly 10 between the first baffle plate 2 and the second baffle plate 6, when the oil pressure is larger than the initial pressure of the push disc 7, the push disc 7 moves backwards in the axial direction, a gap is formed between the stop disc 4 and the friction disc 3, and the half shaft assembly 9 drives the friction disc 3 to rotate and normally run. When the injected oil pressure is smaller than the initial pressure of the push disc 7, the push disc 7 moves forwards axially, so that the stop disc 4 and the friction disc 3 are braked to form deceleration braking.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a wet brake parking function structure for transaxle, includes bolt (1), baffle (2), bolt two (5), baffle two (6), pushes away dish (7) and pontic assembly (10), baffle one (2) through bolt (1) fixed mounting on pontic assembly (10), baffle two (6) through bolt two (5) fixed mounting on pushing away dish (7), and push away between baffle (2) and pontic assembly (10) dish (7) movable mounting, its characterized in that: evenly movable mounting has a plurality of friction discs (3) between baffle (2) and baffle two (6), and equal movable mounting has locking plate (4) between per two adjacent friction discs (3), the axle center department of friction disc (3) is pegged graft and is had semi-axis subassembly (9), and semi-axis subassembly (9) activity is pegged graft in pontic assembly (10), even joint has a plurality of springs (8) on pontic assembly (10), and every spring (8) all with push away dish (7) fixed mounting.

2. The wet brake parking function structure for the transaxle according to claim 1, wherein: the bridge assembly (10) is provided with a mounting hole (11) in a clamping mode, and one end of the spring (8) is connected in the mounting hole (11) in a clamping mode.

3. The wet brake parking function structure for the transaxle according to claim 1, wherein: the half shaft assembly (9) comprises an outer tooth surface end (90) and an insertion shaft (91), and one end of the outer tooth surface end (90) is fixedly connected with one end of the insertion shaft (91).

4. The wet brake parking function structure for the transaxle according to claim 3, wherein: an oil filling hole (12) is formed in the axle center of the bridge body assembly (10), and an inserting shaft (91) is inserted into the oil filling hole (12).

5. The wet brake parking function structure for the transaxle according to claim 3, wherein: an inner tooth surface (30) is arranged on the inner side of the friction disc (3), and the end head (90) of the outer tooth surface is clamped with the inner tooth surface (30).

6. The wet brake parking function structure for the transaxle according to claim 1, characterized in that: a plurality of the springs (8) are arranged in an annular arrangement in the bridge body assembly (10).