CN220540166U

CN220540166U - Brake disc connection structure and brake device

Info

Publication number: CN220540166U
Application number: CN202322357557.8U
Authority: CN
Inventors: 杨伟东; 尹浩; 王文来; 李传伟
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2024-02-27
Anticipated expiration: 2033-08-30

Abstract

The utility model relates to the technical field of railway train bogies, in particular to a brake disc connecting structure and a brake device. According to the structure, the spindle is connected with the movable disc through the splines and the convex teeth, gaps are formed among the splines, a heat dissipation space is provided between the movable disc and the spindle by the gaps, heat dissipation of the brake disc is facilitated, heat transfer to the spindle is reduced, and the influence on the service life of the bearing is avoided; meanwhile, the gap enables the space between the movable disc and the mandrel to be hollowed, the weight of the brake disc is reduced, and the weight of the brake disc and the gearbox are reduced.

Description

Brake disc connection structure and brake device

Technical Field

The utility model relates to the technical field of railway train bogies, in particular to a brake disc connecting structure and a brake device.

Background

Along with the improvement of requirements of people on riding comfort, vehicle energy consumption and the like, the requirements on the weight reduction of the railway vehicle bogie are higher and higher.

In the traditional basic brake device of the motor train unit or the subway bogie, a mandrel is directly connected with a brake disc through a pin key, a shaft hole of the brake disc is attached to a mandrel gear, the shaft hole is small, so that the brake disc is used more, and the whole weight of a gear box is increased; and the brake disc is directly attached to the mandrel, so that the contact area is large, the heat dissipation of the brake disc is influenced, the heat of the brake disc is easily transferred to the mandrel, and the service lives of the mandrel and the bearing are influenced.

Disclosure of Invention

The utility model provides a brake disc connecting structure and a brake device, which are used for solving the defects of heavy weight and poor heat dissipation of a brake disc in the prior art, realizing the weight reduction of the brake disc and a gear box and improving the heat dissipation of the brake disc.

The utility model provides a brake disc connecting structure, which comprises:

a connecting member having a shaft hole for fitting the mandrel;

the spline is wound on the peripheral wall of the connecting piece by taking the axis of the shaft hole as the center, the extending direction of the spline is parallel to the axis of the shaft hole, and a gap is reserved between every two adjacent splines;

and the convex teeth are arranged at the end part of the spline, which is far away from the side where the connecting piece is located, and are suitable for being matched with the key groove of the movable disc to connect the movable disc.

According to the brake disc connecting structure provided by the utility model, the heat dissipation cavity is formed in the spline, and the heat dissipation cavity penetrates through the spline along the extending direction of the spline.

According to the brake disc connecting structure provided by the utility model, the two sides of the spline are respectively provided with the side walls, and the gap is formed between the side walls of the adjacent splines.

According to the brake disc connecting structure provided by the utility model, the extending direction of the side wall is parallel to the axis of the shaft hole.

According to the brake disc connecting structure provided by the utility model, the gap is a V-shaped groove formed by the two side walls.

According to the brake disc connecting structure provided by the utility model, the convex teeth extend to be flush with the two ends of the spline along the extending direction of the spline.

According to the brake disc connecting structure provided by the utility model, the convex teeth are provided with the grooves, and the grooves penetrate through the convex teeth along the extending direction of the convex teeth.

According to the brake disc connecting structure provided by the utility model, the groove is opened towards one side of the convex tooth away from the side of the spline.

The present utility model also provides a brake device including:

a brake housing;

the static disc is arranged on the brake shell;

the movable disc is connected with the mandrel through the brake disc connecting structure, and the movable disc is arranged on one side of the static disc;

and the actuator is arranged on one side of the static disc and is suitable for pushing the static disc to rub against the movable disc so as to brake the mandrel.

According to the braking device provided by the utility model, one end of the braking device is connected with the gear box, the other end of the braking device is connected with the shaft sleeve outside the mandrel, and the heat insulation plate is arranged between the brake shell and the gear box.

According to the brake disc connecting structure, the plurality of splines are arranged outside the connecting piece, the splines are wound on the peripheral wall of the connecting piece by taking the axis of the shaft hole as the center, the extending direction of the splines is parallel to the axis of the shaft hole, gaps are reserved between adjacent splines, and the convex teeth are arranged at the end part of the spline, which is far away from the side of the connecting piece, and are suitable for being matched with the key grooves of the movable disc to connect the movable disc. Therefore, the gap provides a heat dissipation space between the movable disc and the mandrel, which is beneficial to heat dissipation of the brake disc, reduces heat transfer to the mandrel, and simultaneously, the gap enables the hollow part between the movable disc and the mandrel, reduces the weight of the brake disc and realizes the weight reduction of the brake disc and the gear box.

The brake device provided by the utility model is internally provided with the brake disc connecting structure, and has all the advantages as described above.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a brake disc attachment structure provided by the present utility model;

FIG. 2 is a schematic structural view of a brake disc connection structure provided by the present utility model;

FIG. 3 is an assembled schematic view of a brake disc attachment structure provided by the present utility model;

FIG. 4 is a perspective view of another embodiment of a brake disc attachment structure provided by the present utility model;

FIG. 5 is an assembled schematic view of another embodiment of a brake disc attachment structure provided by the present utility model;

reference numerals:

10. a brake disc connection structure; 110. a connecting piece; 111. a shaft hole; 120. a spline; 121. a heat dissipation cavity; 130. convex teeth; 131. a groove; 140. a gap; 20. a mandrel; 30. a movable disk.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Embodiments of the present utility model are described below in conjunction with fig. 1-5.

The present embodiment provides a brake disc connecting structure 10, and the brake disc connecting structure 10 realizes connection of a rotating shaft and a brake disc, and can bear axial force and circumferential torque.

As shown in fig. 1, the brake disc connecting structure 10 is composed of a connecting member 110, a spline 120 and a tooth 130, and has a structure similar to a gear shape, a shaft hole 111 is provided in the center of the connecting member 110, and the shaft hole 111 is used for assembling a spindle 20, so as to realize connection of the spindle 20 and the brake disc connecting structure 10.

In this embodiment, the plurality of splines 120 are provided, the plurality of splines 120 are wound around the peripheral wall of the connecting member 110 with the axis of the shaft hole 111 as the center, the plurality of splines 120 are arranged in an annular array, and gaps 140 are provided between adjacent splines 120.

In this embodiment, the connecting member 110 has a certain length along its axial direction, and the extending direction of the spline 120 is parallel to the axis of the shaft hole 111, so that the spline 120 is aligned with both sides of the connecting member 110.

As shown in fig. 1, the teeth 130 are provided at the end of the spline 120 on the side away from the connection member 110, that is, the teeth 130 are provided at the outer edge of the spline 120, and the teeth 130 protrude outward.

Correspondingly, the inner hole surface of the movable disc 30 is provided with a key groove, and the convex teeth 130 can be matched with the key groove of the movable disc 30, so that the convex teeth 130 are inserted into the key groove, and the brake disc connecting structure 10 is connected with the movable disc 30.

As shown in fig. 3, the spindle 20 is connected with the moving disc 30 through the brake disc connecting structure 10, and the gaps 140 between the plurality of splines 120 provide a heat dissipation space between the moving disc 30 and the spindle 20, which is helpful for heat dissipation of the brake disc, so as to reduce heat transfer of the brake disc to the spindle 20, avoid excessive heating of parts such as the spindle 20 and the bearing, and facilitate improvement of the service life of the parts.

Meanwhile, the spline 120 and the gap 140 enable the space between the movable disc 30 and the mandrel 20 to be hollowed, the shaft hole of the movable disc 30 can be enlarged, the weight of the brake disc is effectively reduced, and the material consumption is reduced; the brake disc connecting structure 10 effectively reduces the weight under the condition of the same load, and realizes the weight reduction of the brake disc and the gear box.

Further, as shown in fig. 1 and 2, the heat dissipation cavity 121 is formed inside the spline 120, and the heat dissipation cavity 121 penetrates through the spline 120 along the extending direction of the spline 120, so that the heat dissipation efficiency of the brake disc connection structure 10 can be further improved by the heat dissipation cavity 121. Through the cooperation of clearance 140 and heat dissipation cavity 121, can more effective improvement brake disc heat dissipation, reduce dabber 20 degree of being heated.

In one embodiment, the spline 120 has side walls on each side, and a gap 140 is formed between the side walls of adjacent splines 120. The side walls are plane, so that the inner space and flatness of the gap 140 are increased, and the heat dissipation efficiency is improved.

In this embodiment, the extending direction of the side wall of the spline 120 is parallel to the axis of the shaft hole 111. The passage direction of the gap 140 is consistent with the axial direction of the brake disc connecting structure 10, so that heat inside the brake disc connecting structure 10 can be conveniently transferred outwards.

In one embodiment, the gap 140 is a V-shaped groove formed by two sidewalls. In the working process, the heat driven disc 30 is transmitted to the brake disc connecting structure 10, the heat of the brake disc connecting structure 10 is gradually reduced from the outer ring to the shaft hole 111, and the V-shaped groove is suitable for the heat distribution, so that the heat dissipation efficiency of the gap 140 can be effectively improved.

As shown in fig. 2, the spline 120 may be a corner formed by a plurality of straight plates intersecting each other, and the straight plate intersecting space forms a heat dissipation space, and the plurality of corners make the brake disc connecting structure 10 have a shape similar to a multi-star, so as to improve heat dissipation efficiency.

As shown in fig. 4 and 5, in one embodiment, the spline 120 may be a triangular prism or a quadrangular prism, and the spline 120 is formed by two opposite side plates, and a heat dissipation space is formed between the side plates, so that the structure is simple, and the weight of the brake disc connecting structure 10 is effectively reduced.

As shown in fig. 1, the brake disc connecting structure 10 has a certain length in the axial direction thereof so as to increase the contact surface between the brake disc connecting structure 10 and the movable disc 30, thereby helping to improve the bearing of axial force and circumferential torque by the brake disc connecting structure 10 and improve the strength and connection stability of the brake disc connecting structure 10.

As shown in fig. 2, when the rotor 30 is thinner, the brake disc connecting structure 10 has a smaller length in the axial direction thereof, forming a thin sheet structure, and each brake disc connecting structure 10 is correspondingly connected with one rotor 30, so that different numbers of brake disc connecting structures 10 can be arranged according to actual requirements, and the flexibility of the brake disc connecting structures 10 is improved.

The teeth 130 are in direct contact with the movable disk 30, and in order to increase the contact area between the teeth 130 and the movable disk 30 and to increase the connection stability, in one embodiment, the teeth 130 extend to be flush with both ends of the spline 120 along the extending direction of the spline 120.

As a further improvement, in some embodiments, the teeth 130 have grooves 131, the grooves 131 extending through the teeth 130 in the direction of extension of the teeth 130. Because the convex teeth 130 are in direct contact with the movable disc 30, in the working process, the heat of the convex teeth 130 is large, the design of the grooves 131 penetrates through the convex teeth 130, the grooves 131 can ventilate, the heat dissipation of the convex teeth 130 can be facilitated, the heat dissipation efficiency of the brake disc connecting structure 10 is further improved, meanwhile, the structure weight is further reduced, and the light weight is realized.

As shown in fig. 2 and 4, in one embodiment, the groove 131 opens toward the side of the lobe 130 away from the side of the spline 120. That is, the groove 131 is opened toward the movable plate 30, so that the groove 131 is closer to the heat source, resulting in better heat dissipation effect.

Of course, the grooves 131 may be disposed on two sides of the teeth 130, the grooves 131 may be opened in other directions of the teeth 130, and the number of the grooves 131 is not limited.

The embodiment of the utility model also provides a braking device which comprises a brake shell, a static disc, a dynamic disc 30 and an actuator.

The stationary plate is mounted within the brake housing and is slidable within the brake housing in the axial direction of the spindle 20. The movable disc 30 is connected to the spindle 20 by the brake disc connecting structure 10, and the movable disc 30 is provided on the stationary disc side.

The actuator is mounted on the brake housing and located on one side of the stationary disc, and the actuator is capable of pushing the stationary disc into friction with the movable disc 30 to brake the spindle 20.

The brake device adopts the brake disc connecting structure 10, and has the effects of reducing weight and facilitating heat dissipation.

In one embodiment, one end of the brake housing is connected with the gear box, the other end of the brake housing is connected with the shaft sleeve outside the mandrel 20, the brake device is guaranteed to be installed stably, a heat insulation plate is arranged between the brake housing and the gear box, and the influence of heat generated by the brake device on the gear box is reduced.

In one embodiment, a spindle 20, a brake disc and a gear set are provided within the housing of the gearbox. The brake disc comprises a movable disc 30 and a stationary disc, a first connecting portion of the spindle 20 is connected with the gear set, and a second connecting portion of the spindle 20 is connected with the movable disc 30 through the brake disc connecting structure 10, please refer to fig. 3 and 5.

The gearbox has the advantages of heat dissipation and light weight as mentioned above due to the adoption of the brake disc connecting structure 10, and the details are not repeated here.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A brake disc connection structure, characterized by comprising:

a connecting member having a shaft hole for fitting the mandrel;

2. The brake disc connection structure according to claim 1, wherein the spline has a heat dissipation cavity inside, the heat dissipation cavity penetrating through the spline in an extending direction of the spline.

3. A brake disc connection according to claim 2, wherein the spline has side walls on each side thereof, and the gap is formed between the side walls of adjacent splines.

4. A brake disc connection according to claim 3, wherein the extending direction of the side wall is parallel to the axis of the shaft hole.

5. The brake disc attachment structure of claim 4, wherein said gap is a V-shaped groove formed by two of said side walls.

6. A brake disc connection according to any one of claims 1 to 5, wherein the teeth extend in the direction of extension of the spline to be flush with both ends of the spline.

7. The brake disc attachment structure of claim 6, wherein the tooth has a groove extending through the tooth in the direction of extension of the tooth.

8. The brake disc connection structure according to claim 7, wherein the groove opens toward a side of the tooth away from the side on which the spline is located.

9. A brake apparatus, comprising:

a brake housing;

the static disc is arranged on the brake shell;

a movable disc connected with the mandrel through the brake disc connecting structure according to any one of claims 1-8, wherein the movable disc is arranged on one side of the static disc;

10. The brake device according to claim 9, wherein one end of the brake device is connected to a gear box, the other end of the brake device is connected to a shaft sleeve outside the spindle, and a heat insulation plate is arranged between the brake housing and the gear box.