Hydraulic motor achieving braking in end face spline meshing mode

Abstract

The utility model discloses a hydraulic motor adopting an end face spline meshing mode to achieve braking, which comprises a motor body and an output shaft, a rotor and a brake disc are arranged in the motor body, the end face of the rotor and the end face of the brake disc are attached, the brake disc and the rotor are coaxially arranged, the rotor is connected with the output shaft, and the brake disc moves axially relative to the motor body. A plurality of spline protrusions which are arranged in an annular array at equal interval included angles around the axis are distributed on the periphery of the end, facing the rotor, of the brake disc, and spline grooves matched with the spline protrusions are distributed on the periphery of the end, facing the brake disc, of the rotor. The hydraulic motor adopts end face spline meshing braking, has the advantages of compact structure, small abrasion, no pollution, quick response, low maintenance cost and the like, remarkably improves the performance of a brake, prolongs the service life of the brake, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, and more specifically, it relates to a hydraulic motor that achieves braking by using end face spline engagement. Background Technology

[0002] Traditional wet friction pad brakes have the following problems: 1. They occupy a large space, which is not conducive to compact design; 2. The friction pads wear out severely after long-term use and need to be replaced frequently; 3. The debris and impurities generated by wear may contaminate the hydraulic system; 4. The friction pads need to be replaced regularly, resulting in high maintenance frequency and cost. Therefore, this utility model proposes a hydraulic motor that achieves braking using an end-face spline engagement method. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a hydraulic motor that uses end face spline engagement to achieve braking. This hydraulic motor uses end face spline engagement braking and has the advantages of compact structure, low wear, no pollution, fast response and low maintenance cost, which significantly improves the performance and service life of the brake.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present utility model relates to a hydraulic motor that uses end-face spline engagement to achieve braking, including a motor body and an output shaft. The motor body is provided with a rotor and a brake disc with their end faces in contact. The brake disc is arranged coaxially with the rotor. The rotor is connected to the output shaft. The brake disc moves axially relative to the motor body. The end of the brake disc facing the rotor has a plurality of spline protrusions arranged in a ring array at equal intervals around the axis. The end of the rotor facing the brake disc has spline grooves that match the spline protrusions.

[0005] The present invention is further configured such that: one end of the brake disc facing away from the rotor is provided with an elastic element that abuts against the inner wall of the motor body; when the inside of the motor body is pressurized, the brake disc moves away from the rotor and compresses the elastic element.

[0006] The present invention is further configured such that the elastic element is a compression spring.

[0007] In summary, this utility model has the following beneficial effects: The hydraulic motor involved in this utility model, which uses end-face spline meshing to achieve braking, has a simple structure, small size, and saves space; there is no sliding friction during the meshing braking process, resulting in minimal wear and extended service life; it eliminates metal debris and impurities generated by friction plate wear, reducing pollution to the hydraulic system; the end-face tooth meshing braking action is fast and the braking effect is stable and reliable; it has low wear and does not require frequent replacement of friction plates, reducing maintenance frequency and cost; the overall function is complete and highly practical. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0009] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0010] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0011] Example 1

[0012] See Figure 1 As shown, the hydraulic motor involved in this embodiment, which uses end-face spline engagement to achieve braking, includes a motor body 1 and an output shaft 2. The motor body 1 is provided with a rotor 3 and a brake disc 4 with their end faces in contact. The brake disc 4 is arranged coaxially with the rotor 3. The rotor 3 is connected to the output shaft 2. The brake disc 4 can move axially relative to the motor body 1. The end of the brake disc 4 facing the rotor 3 is surrounded by a plurality of spline protrusions 5 arranged in a ring array at equal intervals around the axis. The end of the rotor 3 facing the brake disc 4 is surrounded by spline grooves that match the spline protrusions.

[0013] Furthermore, the brake disc 4 is provided with an elastic element 6 at the end facing away from the rotor 3, which abuts against the inner wall of the motor body. The elastic element 6 is a compression spring. When the inside of the motor body 1 is pressurized, the brake disc 4 moves away from the rotor 3 and compresses the elastic element 6.

[0014] In this embodiment, when the inner cavity of the motor body 1 is pressurized by injecting fluid, the brake disc 4 can move away from the rotor 3 and compress the elastic element 6. The spline protrusion 5 on the end of the brake disc 4 facing the rotor 3 disengages from the matching spline groove, and the hydraulic motor is released from braking. When the inner cavity of the motor body 1 is depressurized by releasing fluid, the pressure on the end of the brake disc 4 away from the elastic element 6 decreases. The elastic element 6 recovers its deformation and generates elastic force to push the brake disc 4 until the brake disc 4 moves towards the rotor 3 until the spline protrusion 5 on the end of the brake disc 4 facing the rotor 3 is embedded into the matching spline groove, thereby achieving motor braking.

[0015] The hydraulic motor involved in this utility model uses end-face spline meshing to achieve braking. Braking is achieved through end-face spline meshing, which has a simple structure, small size, and saves space. There is no sliding friction during meshing braking, resulting in minimal wear and extending service life. It eliminates metal debris and impurities generated by friction plate wear, reducing pollution to the hydraulic system. The end-face tooth meshing braking action is fast and the braking effect is stable and reliable. With low wear and no need for frequent friction plate replacement, maintenance frequency and cost are reduced. Overall, it has complete functions and strong practicality.

[0016] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0017] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A hydraulic motor that achieves braking using end-face spline engagement, comprising a motor body and an output shaft, characterized in that: The motor body contains a rotor and a brake disc with their end faces in contact. The brake disc is coaxial with the rotor. The rotor is connected to the output shaft. The brake disc moves axially relative to the motor body. The end of the brake disc facing the rotor has a number of spline protrusions arranged in a ring array at equal intervals around the axis. The end of the rotor facing the brake disc has spline grooves that match the spline protrusions.

2. The hydraulic motor for braking using end-face spline engagement as described in claim 1, characterized in that: The brake disc has an elastic element at one end facing away from the rotor that abuts against the inner wall of the motor body; when the inside of the motor body is pressurized, the brake disc moves away from the rotor and compresses the elastic element.

3. The hydraulic motor for braking using end-face spline engagement as described in claim 2, characterized in that: The elastic element is a compression spring.

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