CN216111845U

CN216111845U - Wet brake

Info

Publication number: CN216111845U
Application number: CN202121633747.2U
Authority: CN
Inventors: 常方坡; 刘海林; 仇静; 黄飞; 刘志新
Original assignee: Anhui Heli Co Ltd
Current assignee: Anhui Heli Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-03-22
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a wet brake, which is internally provided with a plurality of friction plates and separation plates which are sequentially and alternately arranged, and the outer edge part of each separation plate is provided with at least two lug parts extending out of the edge of each friction plate; the ear parts in the same axial direction are connected with at least one pin shaft in a penetrating way, and a spring positioned between two adjacent ear parts is sleeved on the pin shaft; wherein the spring has a compressed spring force when the separator plate and the friction plate are in a braking state. According to the utility model, the two adjacent separation plates are connected by the pin shaft and sleeved with the spring, so that the friction plate and the separation plate can be quickly separated by the spring force of the spring when the friction plate and the separation plate are separated, and the problem that the separation resistance of the brake is increased due to solidification of hydraulic oil under a cold vehicle condition or the friction plate and the separation plate are not easy to separate under a low-speed condition of the vehicle is effectively solved.

Description

Wet brake

Technical Field

The utility model relates to the technical field of brakes, in particular to a wet brake.

Background

The friction plate and the separator of the wet brake are generally separated by centrifugal force after rotation after the brake is released, but in a cold or low-temperature use environment, the viscosity of hydraulic oil in the brake is increased due to solidification, or the friction plate and the separator are not easily separated when the vehicle speed is not high. And because of the structural limitation, a return spring cannot be arranged on a piston in the wet brake, so that the separation resistance of the friction plate and the separating plate is increased, when the brake is released, the friction plate and the separating plate cannot be separated rapidly, the brake dragging phenomenon is generated, the abrasion of the friction plate and the separating plate is intensified, the heat productivity of the wet brake is increased, the energy consumption of the whole vehicle is increased, and the service life of the vehicle is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a wet brake to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: a wet brake is provided with a plurality of friction plates and separation plates which are sequentially and alternately arranged, and at least two lug parts extending to the outer side of the edge of each friction plate are formed at the outer edge part of each separation plate; the ear parts in the same axial direction are connected with at least one pin shaft in a penetrating way, and a spring positioned between two adjacent ear parts is sleeved on the pin shaft; wherein the spring has a compressed spring force when the separator plate and the friction plate are in a braking state.

A plurality of ears formed on each spacer are equidistantly arranged along the circumferential direction of the outer circle of the spacer.

The ear portion and the spacer are integrally formed and have the same thickness.

The ear portion is provided with a pin shaft hole for the spacer to freely displace along the axial direction of the pin shaft in the thickness direction of the ear portion.

Two adjacent the spring that sets up between the ear, its elastic expansion volume is all the same.

The pin shaft is provided with a first limiting end formed at one end and a second limiting end formed at the other end, and the first limiting end and the second limiting end are used for respectively limiting the positions of the limits of the spacer located at the outermost side after the spacer moves on the pin shaft.

The first limiting end comprises a check ring, a notch located on the side wall is formed in the shaft body at the end part of the pin shaft, and the check ring is detachably inserted into one end of the shaft body of the pin shaft through the notch.

The ear part in the same axial direction is connected with a pin shaft in a penetrating way.

The pin shaft penetrates through the center of the ear part.

The ear portion is arranged in a semicircular structure.

According to the technical scheme, the two adjacent separation pieces are connected through the pin shaft and sleeved with the spring, so that the friction plate and the separation piece can be quickly separated through the spring force of the spring when the friction plate and the separation piece are separated, and the problem that the separation resistance is increased due to solidification of hydraulic oil under the condition of a cold vehicle or the friction plate and the separation piece are not easy to separate under the condition of low speed of the vehicle of the brake is effectively solved; the brake dragging phenomenon is effectively solved, the abrasion degree of the friction plate and the spacer is reduced, the heat productivity of the wet brake is relatively stable, the service life of the wet brake is effectively prolonged, and the energy consumption of the whole vehicle is reduced.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic view of a spacer structure according to the present invention;

FIG. 5 is a schematic view of a friction plate according to the present invention.

In the figure: 11 spline housings, 12 driven gears, 13 return springs, 14 fixing plates, 15 planet gears, 16 bearing sets, 17 planet carriers, 18 sun gears, 19 gear rings, 20 shells, 21 shell covers, 3 cavities, 4 pin shafts, 41 first limit ends, 411 notches, 42 second limit ends, 5 friction plates, 6 separating pieces, 61 ear parts, 611 pin shaft holes, 7 clearance areas, 8 retainer rings and 9 springs.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

to facilitate an understanding of the internal structure and the working principle of the wet brake, the following structural explanation is first made for the wet brake body:

the wet brake comprises a shell 20, a shell cover 21, a spline housing 11, a driven gear 12, a return spring 13, a fixing plate 14, a planet gear, a bearing group 16, a planet carrier 17, a sun gear 18 and a gear ring 19, and meanwhile, a cavity 3 for mounting each part is formed in the shell 20;

as shown in figure 1, a shell 20 is connected and relatively fixed with a vehicle body, a gear ring 19 is connected with the shell 20 through a bolt, a sun gear 18 is connected with a spline housing 11 through a spline, a guide post extends out of the spline housing 11, a piston is sleeved on the guide post of the spline housing 11 in an empty way, a driven gear 12 is connected with the guide post of the spline housing 11 through a bolt, return springs 13 are evenly distributed between the spline housing 11 and the piston, an internal spline of a friction plate 5 is matched with an external spline of the spline housing 11, and the friction plates 5 are axially movable on the spline housing 11, the separator plates 6 are fitted with corresponding grooves of the housing 20, and the separator plates 6 are axially slidable along the grooves of the housing 20, the friction plates 5 and the separator plates 6 are alternately installed in the cavity 3 of the housing 20, one of the bearing sets 16 is installed in the hole of the fixed plate 14, the other one is arranged on the shell cover 21, and the bearing group 16 plays a role in supporting the combination of the spline sleeve 11 and the driven gear 12;

the scheme of adopting in the present case is with two adjacent spacers 6 through 4 spacing connections of round pin axle, and install spring 9, when being in under the braking condition, spacer 6 and friction disc 5 compress tightly the laminating, spring 9 at this moment is in the compression state, when stopping the braking, under the elastic force effect of spring 9 and under the rotatory centrifugal force effect of friction disc 5 self, can realize the quick separation of spacer 6 and friction disc 5, the effectual stopper of having solved is because the separation resistance increase that hydraulic oil solidification leads to or the difficult problem of separating of friction disc 5 and spacer 6 under the vehicle low speed condition under the cold car condition.

Specifically, the improved structure of the wet brake is as follows:

at least two ear portions 61 extending to the outside of the edge of the friction plate 5 are formed at the outer edge portion of each separator 6;

here, it can be understood by those skilled in the art that, in a typical wet brake, the separator plates 6 and the friction plates 5 are generally annular structures with the same or similar outer diameter, and in order to realize a connectable structural relationship between two adjacent separator plates 6, the ear portions 61 are formed to extend outside the edge of the friction plates 5, so as to avoid structural interference between the friction plates 5 and the separator plates 6 during use; in addition, because the ear 61 is needed to realize the connection between two adjacent spacers 6, in order to ensure the stable effect of the spacers 6 after connection, the number of the ear 61 is at least two, thus, the stability of the structure can be ensured. Further, a plurality of ear portions 61 formed on each spacer 6 are arranged equidistantly along the outer circumference of the spacer 6, and generally, in order to reduce the processing difficulty and the weight of the spacer 6, the number of the ear portions 61 can be controlled to be 2-6, but is not limited thereto; it should be pointed out that what this ear 61 and spacer 6 body adopted is integrated into one piece processing technology, promptly, is metal material, is favorable to improving the holistic structural strength of self like this to and reduce the processing degree of difficulty.

The ear parts 61 in the same axial direction are connected with at least one pin shaft 4 in a penetrating way, and the pin shaft 4 is sleeved with a spring 9 positioned between two adjacent ear parts 61, wherein the spring 9 has compressed spring force when the separation plate 6 and the friction plate 5 are in a braking state;

here, as will be understood by those skilled in the art, the relative positions of the ear portions 61 of each of the spacers 6 are uniform to ensure that the connection can be achieved in the same axial direction, the pin 4 used in the present embodiment is a smooth-surfaced shaft structure, and is used for connecting the spacers 6 and providing a guide, and also for the sleeve spring 9, it is important to explain that a gap region 7 which is variable during the displacement is formed between two adjacent ear portions 61, the gap region 7 is gradually reduced in space when the friction plate 5 and the spacers 6 are in the braking state, the gap region 7 is gradually increased in space when the friction plate 5 and the spacers 6 are in the braking-off state, and finally the friction plate 5 and the spacers 6 are separated, generally during the separation process, the friction plate 5 is separated from the contact with the spacers 6 by the centrifugal force generated when the friction plate 5 rotates by itself, but under the use condition of a cold temperature, the hydraulic oil has certain viscosity, or when the vehicle runs at low speed, the centrifugal force needs to overcome resistance force caused by partial viscosity or insufficient centrifugal force, so that the separation effect of the friction plate 5 and the spacer 6 is poor, and the mounted spring 9 can just make up the problem caused by the fact that extra work or insufficient centrifugal force caused by overcoming the viscosity of the hydraulic oil is insufficient, so that the friction plate 5 and the spacer 6 can be ensured to be in a normal separation state, the effect is brought, the friction plate 5 and the spacer 6 cannot generate brake dragging after being rapidly separated, the abrasion problem of the friction plate 5 and the spacer 6 is effectively relieved, the heat productivity of the wet brake is reduced, and the energy consumption of the whole vehicle is in a relatively stable state;

in addition, a plurality of springs 9 are arranged and are sequentially distributed between two adjacent ear parts 61, and in order to ensure that the separation sheet 6 can be stably separated from the friction sheet 5 under the action of elastic force, the elastic expansion and contraction amounts of the adopted springs 9 are the same, so that the springs 9 can ensure that the friction sheet 5 and the separation sheet 6 can provide the same elastic force in the separation process, and the integral stability in the separation process is ensured;

in another embodiment, the pin 4 has a first position-limiting end 41 formed at one end and a second position-limiting end 42 formed at the other end, and both the first position-limiting end 41 and the second position-limiting end 42 are used for respectively limiting the positions of the extreme positions of the spacer 6 located at the outermost side after moving on the pin 4;

here, it can be understood by those skilled in the art that, when the pin 4 provides a guiding function for the spacer 6 during the moving process, the spacer 6 is further locked on the shaft body of the pin 4 by the arrangement of the first limiting end 41 and the second limiting end 42, and is prevented from being disengaged; in order to facilitate the installation of the pin shaft 4, the first limiting end 41 includes a retainer ring 8, a notch 411 on the side wall of the shaft body is formed on the shaft body at the end part of the pin shaft 4, the notch 411 is annularly arranged, the retainer ring 8 is detachably inserted into one end of the shaft body of the pin shaft 4 through the notch 411, and the first limiting end 41 is formed to realize limiting; the second limit end 42 at the other end is set to be a hemisphere structure with a diameter larger than the diameter of the shaft body of the pin shaft 4, and after the pin shaft hole 611 is penetrated, the inner side surface of the second limit end 42 abuts against the end surface of one spacer 6 positioned at the outer side.

In the implementation, the ear 61 in the same axial direction is connected with a pin 4 in a penetrating manner, and further, in order to improve the structural stability, the pin 4 penetrates through the center of the ear 61.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a wet brake is provided with a plurality of friction disc and the separator of arranging in turn in this wet brake, its characterized in that:

at least two lug parts extending to the outer side of the edge of the friction plate are formed on the outer edge part of each separator plate;

the ear parts in the same axial direction are connected with at least one pin shaft in a penetrating way, and a spring positioned between two adjacent ear parts is sleeved on the pin shaft;

wherein the spring has a compressed spring force when the separator plate and the friction plate are in a braking state.

2. A wet brake as claimed in claim 1, wherein: a plurality of ears formed on each spacer are equidistantly arranged along the circumferential direction of the outer circle of the spacer.

3. A wet brake as claimed in claim 1 or 2, wherein: the ear portion and the spacer are integrally formed and have the same thickness.

4. A wet brake as claimed in claim 3, wherein: the ear portion is provided with a pin shaft hole for the spacer to freely displace along the axial direction of the pin shaft in the thickness direction of the ear portion.

5. A wet brake as claimed in claim 1, wherein: two adjacent the spring that sets up between the ear, its elastic expansion volume is all the same.

6. A wet brake as claimed in claim 1, wherein: the pin shaft is provided with a first limiting end formed at one end and a second limiting end formed at the other end, and the first limiting end and the second limiting end are used for respectively limiting the positions of the limits of the spacer located at the outermost side after the spacer moves on the pin shaft.

7. A wet brake as claimed in claim 6, wherein: the first limiting end comprises a check ring, a notch located on the side wall is formed in the shaft body at the end part of the pin shaft, and the check ring is detachably inserted into one end of the shaft body of the pin shaft through the notch.

8. A wet brake as claimed in claim 1, wherein: the ear part in the same axial direction is connected with a pin shaft in a penetrating way.

9. A wet brake as claimed in claim 8, wherein: the pin shaft penetrates through the center of the ear part.

10. A wet brake as claimed in claim 1 or 8, wherein: the ear portion is arranged in a semicircular structure.