CN110552970B

CN110552970B - Built-in multi-disc wet brake

Info

Publication number: CN110552970B
Application number: CN201910752874.5A
Authority: CN
Inventors: 张金生
Original assignee: Xiangyang Bile Hydraulic Machinery Co ltd
Current assignee: Xiangyang Bile Hydraulic Machinery Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2021-05-14
Anticipated expiration: 2039-08-15
Also published as: CN110552970A

Abstract

The invention relates to the technical field of brakes, in particular to a built-in multi-disc wet brake which comprises a shell and a sealing plate, wherein the shell is fixedly connected with the sealing plate through bolts, a plurality of dynamic friction discs and a plurality of static friction discs are arranged in the shell and are stacked in the shell at intervals, a brake push rod is arranged at the top end of the sealing plate and penetrates through the top end of the sealing plate, and a sealing plate is fixedly welded at the bottom end of the brake push rod. The internal structure of the brake can be simplified by arranging the elastic diaphragm, the setting of the elastic diaphragm enables the friction plate to return for a shorter time, the separation is more thorough, the design of the buffer structure enables the contact pressure of the friction plate to be gradually increased, the braking mode of direct increase in the past is changed, the occurrence of the tire locking phenomenon is avoided, the safety of the brake is improved, the damage to the friction plate is greatly reduced, the structure is simple, the braking effect is better, and the brake is suitable for popularization.

Description

Built-in multi-disc wet brake

Technical Field

The invention relates to the technical field of brakes, in particular to a built-in multi-disc wet brake.

Background

The automobile brake is one of the most important components of an automobile, the braking performance of the automobile brake directly influences the driving safety of the automobile, and the brake is used for decelerating the automobile or stopping the automobile within the shortest distance according to requirements and mainly comprises a drum type brake and a disc type brake. Although the drum brake vehicle is low in cost and dustproof, the drum brake vehicle is large in size, heavy in weight, not easy to radiate heat, good in heat radiation of the disc brake, good in braking stability and small in size and weight. A multi-disc wet brake in a disc brake is a disc brake with a friction plate working in an oil-immersed closed environment, and has the advantages of large braking torque, long service life, strong fading resistance and pollution resistance, maintenance-free performance and the like, so the multi-disc wet brake is increasingly widely applied to a braking system of an engineering vehicle. However, the conventional multi-disc wet brake has a complicated structure and can achieve a braking function, but the number of parts is large, and thus, the manufacturing and installation are difficult. The pressure spring is an important component of the multi-disc wet brake, and applies pressing force to friction plates of the brake when the pressure spring is compressed to transmit braking torque; when the brake is released, the friction plate is separated, and the brake piston is pushed to return. At present, a plurality of disc wet brakes are arranged in a circumferential mode by adopting spiral springs. By adopting the arrangement mode of the spiral spring, the axial size of the brake shell is easy to increase, the size of the brake is further increased, the structure is complex, the spiral spring pushes the piston to return when being released, the return time is long, and the friction plates are not thoroughly separated. The uneven distribution of the pressing force of the spiral spring can also cause the brake to be unstable, and the brake performance is influenced. Therefore, the elastic diaphragm is used for extruding the friction disc to realize the joint action of the dynamic and static friction plates, the diaphragm spring is used for separating the inner friction plate and the outer friction plate, the inner friction plate and the outer friction plate can be separated quickly and thoroughly, and accordingly braking reliability is improved.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a built-in multi-disc wet brake.

In order to achieve the purpose, the invention adopts the following technical scheme:

a built-in multi-disc wet brake is designed, and comprises a shell and a sealing plate, wherein the shell and the sealing plate are fixedly connected through bolts, a plurality of dynamic friction discs and a plurality of static friction discs are arranged in the shell and are stacked in the shell at intervals, a brake push rod is arranged at the top end of the sealing plate and penetrates through the top end of the sealing plate, a sealing plate is fixedly welded at the bottom end of the brake push rod, a stand column is arranged below the sealing plate, an elastic diaphragm is fixedly connected between the stand column and the sealing plate, an extrusion diaphragm is placed on the dynamic friction discs in the shell, a limiting mechanism is arranged between the extrusion diaphragm and the shell, an oblique column is fixedly welded at the top end of the extrusion diaphragm and abuts against the elastic diaphragm, a buffer mechanism is arranged on the elastic diaphragm, and a through hole is formed in the bottom end of the shell, the inside of through-hole is provided with the pivot, the pivot runs through the middle part of moving the friction disc in proper order, and with move friction disc fixed weld, be provided with sealed the pad between pivot and the casing, sealed pad passes through hex bolts fixed connection with the casing, sealed pad and pivot in close contact with.

Preferably, the casing and the sealing plate are internally filled with DOT5.1 synthetic brake fluid.

Preferably, the housing and the closing plate are made of copper material.

Preferably, the limiting mechanism comprises a vertical groove formed in the shell, a clamping block is clamped in the vertical groove, and the clamping block is fixedly welded with the extrusion membrane.

Preferably, the buffer mechanism comprises a sliding groove formed in the elastic diaphragm and a sliding block clamped in the sliding groove, the sliding block abuts against the inclined column, a first spring is fixedly connected between the top end of the sliding block and the sealing plate, and a second spring is fixedly connected to the upper end of the sliding block and the upper end of the sliding groove.

Preferably, the bolt includes oil drain bolt and countersunk head bolt, oil drain bolt level runs through shrouding and casing in proper order, countersunk head bolt is vertical runs through casing and shrouding fixed connection.

Preferably, a sealing sliding sheet is fixedly arranged on the peripheral wall of the sealing plate, and the sealing sliding sheet abuts against the sealing plate.

The built-in multi-piece wet brake provided by the invention has the beneficial effects that:

1. this built-in multi-disc wet brake can make the quick return of brake push rod through setting up elastic diaphragm, and the return time is short for friction disc quickly separating is thorough, and mobility is stronger, and is stronger for the coil spring who uses before the braking with the answer effect.

2. According to the invention, when the brake push rod acts on the sealing plate, the sealing plate can drive the elastic diaphragm to press down to extrude the inclined column, and at the moment, the inclined column starts to press down to extrude the diaphragm, so that the dynamic friction plate and the static friction plate start to rub, and by arranging the buffer mechanism, when the elastic diaphragm presses down to extrude the inclined column, the slide block can buffer the pressing degree under the action of the spring, so that the acting force of the inclined column on the extrusion diaphragm gradually increases to a peak, the phenomenon of locking caused by sudden increase in the past is changed, the safety is improved, and the loss of the friction plate is reduced.

3. According to the invention, the oil drainage bolt is arranged, so that the friction oil can be replaced more conveniently and rapidly, the friction oil can be added and discharged without being completely detached, and the labor intensity is reduced.

4. According to the invention, the sealing plate and the shell are made of copper materials, so that heat transfer can be increased, the heat dissipation effect can be effectively enhanced by coating the outer layer of heat dissipation paint, and the phenomenon that the interior is burnt due to overhigh friction temperature is avoided.

Drawings

Fig. 1 is a schematic front sectional view of a built-in multi-disc wet brake according to the present invention;

fig. 2 is a schematic front view of a built-in multi-disc wet brake according to the present invention;

fig. 3 is a schematic bottom view of a built-in multi-disc wet brake according to the present invention.

Fig. 4 is a schematic structural diagram of a damping mechanism with a built-in multi-disc wet brake according to the present invention.

In the figure: the hydraulic brake device comprises a shell 1, a sealing plate 2, a dynamic friction plate 3, a static friction plate 4, a brake push rod 5, a sealing plate 6, a vertical column 7, an elastic membrane 8, a compression membrane 9, an inclined column 10, a through hole 11, a rotating shaft 12, a sealing gasket 13, a hexagonal bolt 14, a sliding groove 15, a sliding block 16, a vertical groove 17, a clamping block 18, a first spring 19, a second spring 20, a bolt 21, an oil drain bolt 22, a countersunk bolt 23 and a sealing sliding sheet 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a built-in multi-disc wet brake, including casing 1 and shrouding 2, through bolt 21 fixed connection between casing 1 and the shrouding 2, bolt 21 includes oil drain bolt 22 and countersunk bolt 23, oil drain bolt 22 level runs through shrouding 2 and casing 1 in proper order, countersunk bolt 23 vertically runs through casing 1 and shrouding 2 fixed connection, through setting up oil drain bolt 22, can be so that more convenient and fast when changing the friction oil, need not all dismantlements again and can realize the interpolation and the emission of friction oil, intensity of labour has been reduced, the intussuseption of casing 1 and shrouding 2 is filled with the synthetic brake fluid of DOT5.1, casing 1 and shrouding 2 adopt the copper material to make, through adopting the copper material to shrouding 2 and casing 1, can increase the heat transfer.

In the invention, a plurality of dynamic friction plates 3 and a plurality of static friction plates 4 are arranged in a shell 1, the dynamic friction plates 3 and the static friction plates 4 are stacked in the shell 1 at intervals, a brake push rod 5 is arranged at the top end of a seal plate 2, the brake push rod 5 penetrates through the top end of the seal plate 2, a seal plate 6 is fixedly welded at the bottom end of the brake push rod 5, a seal slide 24 is fixedly arranged on the peripheral wall of the seal plate 6, the seal slide 24 is abutted against the seal plate 2, the seal slide 24 can effectively seal a gap to prevent brake fluid from permeating, an upright post 7 is arranged below the seal plate 6, an elastic diaphragm 8 is fixedly connected between the upright post 7 and the seal plate 6, a squeeze membrane 9 is placed on the dynamic friction plates 3 in the shell 1, a limiting mechanism is arranged between the squeeze membrane 9 and the shell 1, and comprises a vertical groove 17 arranged in the shell 1, the clamping connection has fixture block 18 in the vertical groove 17, fixture block 18 and extrusion diaphragm 9 fixed welding, the fixed welding in top of extrusion diaphragm 9 has batter post 10, batter post 10 offsets with elastic diaphragm 8, when brake push rod 5 acted on closing plate 6, closing plate 6 can drive elastic diaphragm 8 and push down extrusion batter post 10, batter post 10 began to push down to extrusion diaphragm 9 this moment, make dynamic friction piece 3 and static friction piece 4 begin the friction and slow down, thereby realize braking effect, elastic diaphragm 8 adopts the steel construction to resume effectual can make brake push rod 5 return fast, return time is short, and then make friction piece quickly separating thoroughly, mobility is stronger, for the coil spring who uses before, braking and answer the effect better.

In the invention, a buffer mechanism is arranged on an elastic diaphragm 8, the buffer mechanism comprises a sliding groove 15 arranged in the elastic diaphragm 8 and a sliding block 16 clamped in the sliding groove 15, the sliding block 16 is abutted against an inclined column 10, a first spring 19 is fixedly connected between the top end of the sliding block 16 and a sealing plate 6, a second spring 20 is fixedly connected between the sliding block 16 and the upper end of the sliding groove 15, the bottom end of a shell 1 is provided with a through hole 11, a rotating shaft 12 is arranged in the through hole 11, the rotating shaft 12 sequentially penetrates through the middle part of a dynamic friction plate 3 and is fixedly welded with the dynamic friction plate 3, a sealing gasket 13 is arranged between the rotating shaft 12 and the shell 1, the sealing gasket 13 is fixedly connected with the shell 1 through a hexagonal bolt 14, the sealing gasket 13 is tightly contacted with the rotating shaft 12, and the buffer mechanism is arranged, so that when the elastic diaphragm 8 presses the inclined column 10 downwards, make batter post 10 grow gradually to the crest to the effort of extrusion diaphragm 9, changed earlier sudden grow and the phenomenon that the tire locking appears, not only improved the security, also reduced the loss of friction disc, and spout 15 distance is limited, finally still extrudes batter post 10 by elastic diaphragm 8 and forms the braking, and is no influence at all to braking effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A built-in multi-plate wet brake comprises a shell (1) and a sealing plate (2), and is characterized in that the shell (1) is fixedly connected with the sealing plate (2) through bolts (21), a plurality of dynamic friction plates (3) and a plurality of static friction plates (4) are arranged in the shell (1), the dynamic friction plates (3) and the static friction plates (4) are stacked in the shell (1) at intervals, a brake push rod (5) is arranged at the top end of the sealing plate (2), the brake push rod (5) penetrates through the top end of the sealing plate (2), a sealing plate (6) is fixedly welded at the bottom end of the brake push rod (5), an upright post (7) is arranged below the sealing plate (6), an elastic membrane (8) is fixedly connected between the upright post (7) and the sealing plate (6), and extrusion membrane (9) is placed on the dynamic friction plates (3) in the shell (1), be provided with stop gear between extrusion diaphragm (9) and casing (1), the fixed welding in top of extrusion diaphragm (9) has batter post (10), batter post (10) offset with elastic diaphragm (8), be provided with buffer gear on elastic diaphragm (8), through-hole (11) have been seted up to the bottom of casing (1), the inside of through-hole (11) is provided with pivot (12), pivot (12) run through the middle part of moving friction disc (3) in proper order, and with move friction disc (3) fixed welding, be provided with sealed pad (13) between pivot (12) and casing (1), sealed pad (13) and casing (1) are through hex bolts (14) fixed connection, sealed pad (13) and pivot (12) in close contact with.

2. The built-in multi-disc wet brake of claim 1, wherein the inside of the housing (1) and the closing plate (2) is filled with DOT5.1 synthetic brake fluid.

3. A built-in multi-disc wet brake according to claim 1, characterized in that the housing (1) and the closing plate (2) are made of copper material.

4. A built-in multi-disc wet brake as claimed in claim 1, wherein the limiting mechanism comprises a vertical groove (17) formed in the housing (1), a fixture block (18) is clamped in the vertical groove (17), and the fixture block (18) is fixedly welded with the squeeze film (9).

5. The built-in multi-disc wet brake of claim 1, wherein the buffer mechanism comprises a sliding groove (15) formed in the elastic diaphragm (8) and a sliding block (16) clamped in the sliding groove (15), the sliding block (16) is abutted against the inclined column (10), a first spring (19) is fixedly connected between the top end of the sliding block (16) and the sealing plate (6), and a second spring (20) is fixedly connected between the sliding block (16) and the upper end of the sliding groove (15).

6. The built-in multi-disc wet brake of claim 1, wherein the bolt (21) comprises an oil drain bolt (22) and a countersunk bolt (23), the oil drain bolt (22) horizontally penetrates through the sealing plate (2) and the housing (1) in sequence, and the countersunk bolt (23) vertically penetrates through the housing (1) and is fixedly connected with the sealing plate (2).

7. A built-in multi-disc wet brake according to claim 1, wherein the sealing plate (6) has a sealing sliding piece (24) fixed on its peripheral wall, and the sealing sliding piece (24) abuts against the sealing plate (2).