CN211820476U - Adjustable wet brake with parking brake - Google Patents

Abstract

The utility model discloses an adjustable wet brake with parking brake, which solves the problems that the existing adjustable wet brake with parking brake has difficult guarantee of processing precision, hard brake, insufficient flexibility and poor driving comfort level in the using process, and adopts the technical proposal that the other big end surface of a traveling piston (5) is set into a ladder shape which can be matched with a fixed disc (6); the external splines at one end of the wheel core (9) are set into helical teeth which can be matched with the inner holes of the toothed splines of a plurality of dynamic friction plates (8), and the internal toothed splines of the gear ring (4) are set into helical teeth which can be matched with the inner holes of the toothed splines of a plurality of static friction plates (7). Therefore, the brake pad has the advantages of ensuring the processing precision, smoothing the brake and improving the driving comfort.

Description

Adjustable wet brake with parking brake

Technical Field

The utility model relates to a brake especially relates to an adjustable wet brake who takes parking braking who comprises a plurality of friction disc, a plurality of static friction disc, a plurality of spring, fixed disk, driving piston, parking piston, braking cylinder body and ring gear.

Background

Chinese patent CN207018399U discloses an adjustable wet brake with parking brake, which is structurally characterized in that: the parking brake consists of a plurality of dynamic friction plates, a plurality of static friction plates, a plurality of springs, a fixed disc, a traveling piston, a parking piston, a brake cylinder body and a gear ring, wherein the dynamic friction plates and the static friction plates are arranged in parallel at intervals, a tooth-shaped spline is arranged in an inner hole of the gear ring, a tooth-shaped spline is also arranged on the excircle of the static friction plate, the static friction plates are arranged on the tooth-shaped spline in the gear ring to form a whole, the tooth-shaped spline inner hole of the dynamic friction plates is connected with an external spline at one end of a wheel core into a whole, the parking piston is arranged in the brake cylinder body, one end of the parking piston is contacted with the dynamic friction plates or the static friction plates, the other end of the parking piston is contacted with the fixed plate through a plurality of parking springs, the traveling piston is arranged in the fixed disc, the large end surface of the traveling piston is contacted with the gear ring, and an adjusting bolt is arranged on the fixed disc, and the top end of the adjusting bolt is contacted with the other large end face of the travelling crane piston. However, the traveling crane piston in the structure is in sliding connection with the groove in the fixed disc through the annular protrusion on the traveling crane piston, and meanwhile, the inner surface and the outer surface of the annular protrusion are respectively provided with the oil seal grooves, so that the machining precision is difficult to guarantee. In addition, because the dynamic friction plates and the static friction plates in the structure are arranged in parallel at intervals and are guided and positioned by the straight tooth spline, the problems of over-hard braking, insufficient flexibility and poor driving comfort degree exist in the use process.

Disclosure of Invention

The utility model aims at providing a can ensure the machining precision, again can gentle and agreeable brake improve the driving comfort's adjustable wet brake who takes parking braking.

In order to achieve the above purpose, the utility model relates to an adjustable wet brake with parking brake, which comprises a plurality of dynamic friction plates, a plurality of static friction plates, a plurality of springs, a fixed plate, a traveling piston, a parking piston, a brake cylinder body and a gear ring, wherein the dynamic friction plates and the static friction plates are arranged alternately and parallelly, a tooth-shaped spline is arranged in an inner hole of the gear ring, a tooth-shaped spline is also arranged on the excircle of the static friction plate, the static friction plates are arranged on the tooth-shaped spline of the gear ring to form a whole, the inner hole of the tooth-shaped spline of the dynamic friction plates is connected with an external spline at one end of a wheel core into a whole, the parking piston is arranged in the brake cylinder body, one end of the parking piston is contacted with the dynamic friction plates or the static friction plates, the other end of the parking piston is contacted with a fixed, the small end face of the traveling piston is in contact with the dynamic friction plate or the static friction plate, the dynamic friction plates and the static friction plates are arranged between the traveling piston and the parking piston, the fixed disc is provided with an adjusting bolt, the top end of the adjusting bolt is in contact with the other large end face of the traveling piston, and the other large end face of the traveling piston is arranged into a step shape capable of being matched with the fixed disc; the external spline at one end of the wheel core is set into helical teeth which can be matched with inner holes of the toothed splines of the plurality of dynamic friction plates, and the internal toothed spline of the gear ring is set into helical teeth which can be matched with inner holes of the toothed splines of the plurality of static friction plates.

The fixed disc is arranged into a cup shape, and the inner surface of the bottom of the cup shape is arranged into a step shape which can be matched with the other large end surface of the traveling crane piston.

And the tooth forms on the spline inner holes of the dynamic friction plates are set to be oblique tooth forms which can be matched with one end of the wheel core.

And the tooth forms on the excircle of the plurality of static friction plates are set to be oblique tooth forms which can be matched with the internal tooth form spline of the gear ring.

An adjustable wet brake with parking brake is composed of multiple dynamic friction plates, multiple static friction plates, multiple springs, fixed plate, running piston, parking piston, braking cylinder and gear ring, which are parallelly arranged, toothed spline in gear ring, toothed spline on external circumference of static friction plate, static friction plate on toothed spline of gear ring, parking piston in braking cylinder, and parking piston in braking cylinder, placing a plurality of dynamic friction plates and a plurality of static friction plates between a traveling piston and a parking piston, installing an adjusting bolt on a fixed disc, enabling the top end of the adjusting bolt to be in contact with the other large end face of the traveling piston, and setting the other large end face of the traveling piston into a step shape capable of being matched with the fixed disc; and arranging an external spline at one end of the wheel core into helical teeth which can be matched with inner holes of the toothed splines of the plurality of dynamic friction plates.

After the structure is adopted, the other large end surface of the traveling crane piston is arranged into a step shape which can be matched with the fixed disc, so that the processing is convenient, and the processing precision is ensured; and because the external spline at one end of the wheel core is set into helical teeth which can be matched with the inner holes of the toothed splines of the dynamic friction plates, and the internal toothed spline of the gear ring is set into helical teeth which can be matched with the inner holes of the toothed splines of the static friction plates, the axial stroke of the dynamic friction plates or the static friction plates is increased. Thereby achieving the purpose of flexibly braking and improving the driving comfort.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic main sectional view of an adjustable wet brake with parking brake of the present invention.

Fig. 2 is an enlarged partial cross-sectional view of fig. 1.

Fig. 3 is a schematic front view of the wheel core of the adjustable wet brake with parking brake of the present invention.

In the figure: 1. the brake device comprises a fixed plate 2, a brake cylinder 3, a parking piston 4, a gear ring 5, a traveling piston 6, a fixed plate 7, a static friction plate 8, a dynamic friction plate 9 and a wheel core.

Detailed Description

FIG. 1, FIG. 2 and FIG. 3 show an adjustable wet brake with parking brake, which comprises a plurality of dynamic friction plates 8, a plurality of static friction plates 7, a plurality of springs, a fixed plate 6, a traveling piston 5, a parking piston 3, a brake cylinder body 2 and a gear ring 4, wherein the dynamic friction plates 8 and the static friction plates 7 are arranged in parallel at intervals, a tooth-shaped spline is arranged in an inner hole of the gear ring 4, a tooth-shaped spline is also arranged on the outer circle of the static friction plate 7, the static friction plate 7 is arranged on the tooth-shaped spline of the gear ring 4 to form a whole, the inner hole of the tooth-shaped spline of the dynamic friction plate 8 is connected with an outer spline at one end of a wheel core 9 into a whole, the parking piston 3 is arranged in the brake cylinder body 2, one end of the parking piston 3 is contacted with the dynamic friction plates 8 or the static friction plates 7, the other end of the parking piston, the large end face of a traveling piston 5 is contacted with a gear ring 4 through a plurality of return springs, the small end face of the traveling piston 5 is contacted with a dynamic friction plate 8 or a static friction plate 7, the dynamic friction plates 8 and the static friction plates 7 are arranged between the traveling piston 5 and a parking piston 3, an adjusting bolt is arranged on a fixed disc 6, the top end of the adjusting bolt is contacted with the other large end face of the traveling piston 5, and the other large end face of the traveling piston 5 is arranged into a step shape which can be matched with the fixed disc 6; the external spline at one end of the wheel core 9 is set into helical teeth which can be matched with the inner holes of the toothed splines of a plurality of dynamic friction plates 7, and the internal toothed spline of the gear ring 4 is set into helical teeth which can be matched with the inner holes of the toothed splines of a plurality of static friction plates 7; the fixed disc 6 is arranged into a cup shape, and the inner surface of the bottom of the cup shape is arranged into a step shape which can be matched with the other large end surface of the traveling crane piston 5; the tooth form on the spline inner hole of the plurality of dynamic friction plates 8 is set to be oblique tooth form which can be matched with one end of the wheel core 9; the tooth forms on the outer circles of the static friction plates 7 are set to be oblique tooth forms which can be matched with the internal tooth form spline of the gear ring 4.

The attached figures 1, 2 and 3 show that the utility model relates to an adjustable wet brake with parking brake, which can also comprises a plurality of dynamic friction plates 8, a plurality of static friction plates 7, a plurality of springs, a fixed disc 6, a traveling piston 5, a parking piston 3, a brake cylinder body 2 and a gear ring 4, wherein the dynamic friction plates 8 and the static friction plates 7 are arranged alternately and parallelly, a tooth-shaped spline is arranged in the inner hole of the gear ring 4, a tooth-shaped spline is also arranged on the outer circle of the static friction plates 7, the static friction plates 4 are arranged on the tooth-shaped spline of the gear ring 4 to form a whole, the inner hole of the tooth-shaped spline of the dynamic friction plates 8 is connected with the outer spline at one end of a wheel core 9 into a whole, the parking piston 3 is arranged in the brake cylinder body 2, one end of the parking piston 3 is contacted with the dynamic friction plates 8 or the static, a traveling piston 5 is arranged in a fixed disc 6, the large end face of the traveling piston 5 is in contact with a gear ring 4 through a plurality of return springs, the small end face of the traveling piston 5 is in contact with a dynamic friction plate 8 or a static friction plate 7, the dynamic friction plates 8 and the static friction plates 7 are arranged between the traveling piston 5 and a parking piston 3, an adjusting bolt is arranged on the fixed disc 6, the top end of the adjusting bolt is in contact with the other large end face of the traveling piston 5, and the other large end face of the traveling piston 5 is arranged into a step shape capable of being matched with the fixed disc 6; and the external spline at one end of the wheel core 9 is set into helical teeth which can be matched with the inner holes of the toothed splines of the dynamic friction plates 8.

Claims (5)

1. An adjustable wet brake with parking brake is composed of multiple dynamic friction plates, multiple static friction plates, multiple springs, fixed plates, running piston, parking piston, braking cylinder and gear ring, where the dynamic friction plates and static friction plates are arranged in parallel at intervals, the internal hole of gear ring is equipped with toothed spline, the external circle of static friction plate is also equipped with toothed spline, the static friction plates are mounted on the internal toothed spline of gear ring to form an integral body, the internal hole of toothed spline of dynamic friction plate is connected with external spline at one end of wheel core, the parking piston is mounted in the braking cylinder, one end of parking piston is contacted with dynamic friction plate or static friction plate, the other end of parking piston is contacted with fixed plate by multiple parking springs, the running piston is arranged in fixed plate, the large end face of running piston is contacted with gear ring by multiple return springs, the small end face of running piston is contacted with dynamic friction plate or static friction plate, arrange a plurality of friction discs and a plurality of static friction disc in between driving piston and the parking piston, install adjusting bolt on the fixed disk, adjusting bolt top and another big end face contact of driving piston, its characterized in that: the other large end surface of the traveling crane piston (5) is arranged into a step shape which can be matched with the fixed disc (6); the external splines at one end of the wheel core (9) are set into helical teeth which can be matched with the inner holes of the toothed splines of a plurality of dynamic friction plates (8), and the internal toothed splines of the gear ring (4) are set into helical teeth which can be matched with the inner holes of the toothed splines of a plurality of static friction plates (7).

2. The adjustable wet brake with parking brake of claim 1, characterized in that: the fixed disc (6) is arranged into a cup shape, and the inner surface of the bottom of the cup shape is arranged into a step shape which can be matched with the other large end surface of the traveling crane piston (5).

3. The adjustable wet brake with parking brake of claim 1, characterized in that: the tooth form on the spline inner holes of the dynamic friction plates (8) is set to be oblique tooth form which can be matched with one end of the wheel core (9).

4. The adjustable wet brake with parking brake of claim 1, characterized in that: and the tooth forms on the outer circles of the static friction plates (7) are set into oblique tooth forms which can be matched with the internal tooth form spline of the gear ring (4).

5. An adjustable wet brake with parking brake is composed of multiple dynamic friction plates, multiple static friction plates, multiple springs, fixed plates, running piston, parking piston, braking cylinder and gear ring, where the dynamic friction plates and static friction plates are arranged in parallel at intervals, the internal hole of gear ring is equipped with toothed spline, the external circle of static friction plate is also equipped with toothed spline, the static friction plates are mounted on the internal toothed spline of gear ring to form an integral body, the internal hole of toothed spline of dynamic friction plate is connected with external spline at one end of wheel core, the parking piston is mounted in the braking cylinder, one end of parking piston is contacted with dynamic friction plate or static friction plate, the other end of parking piston is contacted with fixed plate by multiple parking springs, the running piston is arranged in fixed plate, the large end face of running piston is contacted with gear ring by multiple return springs, the small end face of running piston is contacted with dynamic friction plate or static friction plate, arrange a plurality of friction discs and a plurality of static friction disc in between driving piston and the parking piston, install adjusting bolt on the fixed disk, adjusting bolt top and another big end face contact of driving piston, its characterized in that: the other large end surface of the traveling crane piston (5) is arranged into a step shape which can be matched with the fixed disc (6); and arranging an external spline at one end of the wheel core (9) into helical teeth which can be matched with inner holes of the toothed splines of the plurality of dynamic friction plates (8).

Images