Hydraulic motor integrating driving and parking braking

Abstract

The utility model discloses a hydraulic motor integrating travelling and parking braking, which comprises a hydraulic motor body with a built-in flushing device, the hydraulic motor body comprises a motor shell and a brake shaft, one end of the hydraulic motor body is integrated with a multi-piece brake, and the other end of the hydraulic motor body is integrated with a drum brake. A multi-piece brake is integrated at one end of the hydraulic motor to achieve parking braking, and a drum brake is integrated at the other end of the hydraulic motor to achieve traveling braking. A flushing device is further arranged inside to solve the heat dissipation problem, the overall function is complete, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, and more specifically, to a hydraulic motor with integrated driving and parking brakes. Background Art

[0002] Traditional hydraulic motors are usually manufactured separately. If the output shaft needs to be braked, a brake device needs to be installed at the end of the shaft to achieve the braking function. The post-installation method not only requires high adaptability between components, but is also prone to problems such as loose assembly and poor sealing, resulting in poor overall effect. Based on this, the utility model proposes a hydraulic motor with integrated driving and parking brakes. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and provide a hydraulic motor integrating driving and parking brakes, which solves the problems of driving brakes and parking brakes applied to a traveling mechanism.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves a hydraulic motor with integrated driving and parking brakes, including a hydraulic motor body with a built-in flushing device, the hydraulic motor body including a motor housing and a brake shaft, one end of the hydraulic motor body is integrated with a multi-disc brake, and the other end is integrated with a drum brake.

[0005] The utility model is further configured as follows: the multi-disc brake includes a brake rear cover arranged at the rear end of the motor housing, a brake seat is arranged between the brake rear cover and the motor housing, a brake chamber is formed between the brake seat and the brake rear cover, a brake piston for axial movement is arranged in the brake chamber, an elastic member is arranged between the brake piston and the brake rear cover, one end of the brake shaft extends into the brake chamber and a plurality of static friction plates equidistantly arranged along the axial direction are arranged on the outer wall thereof, a dynamic friction plate arranged on the brake piston and moving therewith is arranged between two adjacent static friction plates; a process hole is opened on the brake rear cover, and a connecting screw hole opened on the brake piston is arranged in the process hole.

[0006] The utility model is further configured as follows: the elastic member is a disc spring.

[0007] The utility model is further configured as follows: the drum brake includes a brake drum arranged at the head end of a motor housing and fixed to a brake shaft, the brake drum rotates with the brake shaft, a brake drum assembly fixed to the motor housing is arranged inside the brake drum, the brake drum assembly includes two brake shoes which are symmetrically arranged on the left and right, one end of any one of the brake shoes is hinged to the other brake shoe, a wheel brake cylinder is connected between the other end and the other brake shoe, the two ends of the wheel brake cylinder are respectively hinged to the brake shoes, and also includes a return spring close to the wheel brake cylinder, one end of the return spring is connected to one of the brake shoes, and the other end is connected to the other brake shoe.

[0008] The utility model is further configured as follows: the return spring is a tension spring.

[0009] In summary, the utility model has the following beneficial effects: the hydraulic motor with integrated driving and parking brakes involved in the utility model realizes parking brake by integrating a multi-disc brake at one end and realizes driving brake by integrating a drum brake at the other end; a flushing device is also provided inside to solve the heat dissipation problem, and the overall function is complete and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0011] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0012] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0013] Example 1

[0014] See also Figure 1 As shown, the hydraulic motor with integrated driving and parking brakes involved in this embodiment includes a hydraulic motor body 100 with a built-in flushing device. The hydraulic motor body 100 includes a motor housing 101 and a brake shaft 102. One end of the hydraulic motor body 100 is integrated with a multi-disc brake 200, and the other end is integrated with a drum brake 300.

[0015] Furthermore, the multi-disc brake 200 includes a brake rear cover 201 arranged at the rear end of the motor housing 101, a brake seat 202 is provided between the brake rear cover 201 and the motor housing 101, a brake chamber (not marked) is formed between the brake seat 202 and the brake rear cover 201, a brake piston 203 for axial movement is provided in the brake chamber, an elastic member 204 is provided between the brake piston 203 and the brake rear cover 201, the elastic member 204 is a disc spring, one end of the brake shaft 102 extends into the brake chamber and a plurality of static friction plates 205 equidistantly arranged along the axial direction are provided on its outer wall, a dynamic friction plate 206 provided on the brake piston 203 and moving therewith is provided between two adjacent static friction plates 205; a process hole 207 is provided on the brake rear cover 201, and a connecting screw hole 208 provided on the brake piston is provided in the process hole 207.

[0016] Furthermore, the drum brake 300 includes a brake drum 301 arranged at the head end of the motor housing 101 and fixed to the brake shaft 102, the brake drum 301 rotates with the brake shaft 102, and a brake drum assembly (not marked) fixed to the motor housing 101 is arranged inside the brake drum 301, the brake drum assembly includes two brake shoes 302 arranged symmetrically on the left and right, one end of any one of the brake shoes 302 is hinged to the other brake shoe 302, and a wheel brake cylinder 303 is connected between the other end and the other brake shoe 302, the two ends of the wheel brake cylinder 303 are respectively hinged to the brake shoes 302, and also include a return spring 304 close to the wheel brake cylinder 303, one end of the return spring 304 is connected to one of the brake shoes 302, and the other end is connected to the other brake shoe 302; the return spring 304 is a tension spring.

[0017] In this embodiment, the brake piston 203 moves axially to drive the dynamic friction plate 206 to follow, so that the dynamic friction plate 206 contacts the static friction plate 205, thereby generating friction, thereby achieving a braking effect on the brake shaft 102; the two brake shoes 302 can also be opened by pressurizing the wheel brake cylinder 303, so that the mutually hinged brake shoes 302 can expand outward and squeeze the brake drum 301 connected to the brake shaft 102 outward, thereby achieving a braking effect on the brake shaft 102.

[0018] Among them, the elastic member 204 (i.e., disc spring) is provided to be used for resetting the brake piston 203 ; and the return spring 304 is provided to be used for resetting the brake shoe 302 .

[0019] The utility model relates to a hydraulic motor with integrated driving and parking brakes. The hydraulic motor realizes parking brake by integrating a multi-disc brake at one end and realizes driving brake by integrating a drum brake at the other end. A flushing device is also arranged inside to solve the heat dissipation problem. The overall function is complete and the practicability is strong.

[0020] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0021] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A hydraulic motor with integrated driving and parking brakes, comprising a hydraulic motor body with a built-in flushing device, the hydraulic motor body comprising a motor housing and a brake shaft, characterized in that: One end of the hydraulic motor body is integrated with a multi-disc brake, and the other end is integrated with a drum brake.

2. The hydraulic motor with integrated service and parking brakes according to claim 1, characterized in that: The multi-disc brake includes a brake rear cover arranged at the rear end of the motor housing, a brake seat is arranged between the brake rear cover and the motor housing, a brake chamber is formed between the brake seat and the brake rear cover, a brake piston for axial movement is arranged in the brake chamber, an elastic member is arranged between the brake piston and the brake rear cover, one end of the brake shaft extends into the brake chamber and a plurality of static friction plates equidistantly arranged along the axial direction are arranged on its outer wall, a dynamic friction plate arranged on the brake piston and moving therewith is arranged between two adjacent static friction plates; a process hole is opened on the brake rear cover, and a connecting screw hole opened on the brake piston is arranged in the process hole.

3. The hydraulic motor with integrated service and parking brakes according to claim 2, characterized in that: The elastic member is a disc spring.

4. The hydraulic motor with integrated service and parking brakes according to any one of claims 1 to 3, characterized in that: The drum brake includes a brake drum which is arranged at the head end of the motor housing and fixed to the brake shaft. The brake drum rotates with the brake shaft. A brake drum assembly fixed to the motor housing is arranged inside the brake drum. The brake drum assembly includes two brake shoes which are symmetrically arranged on the left and right. One end of any one of the brake shoes is hinged to the other brake shoe, and a wheel brake cylinder is connected between the other end and the other brake shoe. The two ends of the wheel brake cylinder are respectively hinged to the brake shoes. It also includes a return spring close to the wheel brake cylinder, one end of the return spring is connected to one of the brake shoes, and the other end is connected to the other brake shoe.

5. The hydraulic motor with integrated service and parking brakes according to claim 4, characterized in that: The return spring is a tension spring.

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