CN219691666U - Hydraulic motor with flushing function - Google Patents

Abstract

The utility model discloses a hydraulic motor with a flushing function, which comprises: the balance disc is fixedly connected with one side of the rotor to form a high-pressure cavity, and one end of the linkage shaft penetrates through the balance disc and stretches into the cavity; wherein, set up the washing runner on the rotor, the one end of washing runner is linked together with the high-pressure chamber, and the other end of washing runner is linked together with the cavity. Therefore, high-pressure hydraulic oil can enter the flushing flow passage from the high-pressure cavity, and then enters the cavity of the rotor through the flushing flow passage, so that flushing and cooling of the inner wall of the rotor and the surface of the linkage shaft are realized, and the lubricity between the rotor and the linkage shaft can be improved.

Description

Hydraulic motor with flushing function

Technical Field

The utility model relates to the technical field of hydraulic motors, in particular to a hydraulic motor with a flushing function.

Background

The hydraulic motor is an executive component of a hydraulic system, which converts the hydraulic pressure energy provided by a hydraulic pump into mechanical energy (torque and rotation speed) of an output shaft of the hydraulic motor, and is mainly applied to the fields of injection molding machines, ships, lifting machines, engineering machines, construction machines, coal mine machines, mining machines, metallurgical machines, ship machines, petrochemical machines, port machines and the like.

The hydraulic motor can generate heat when running, so that the temperature of the meshing part of the rotor and the linkage shaft is increased, and insufficient lubrication between the rotor and the linkage shaft is easily caused after the temperature is increased, thereby affecting the performance and the service life of the hydraulic motor.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the technical problem that the temperature is too high when the meshing position of the rotor of the hydraulic motor and the linkage shaft is in operation. The utility model provides a hydraulic motor with a flushing function, which can flush the joint of a rotor and a linkage shaft, can reduce the temperature, can increase the lubricity between the rotor and the linkage shaft and can prolong the service life of the hydraulic motor.

The technical scheme adopted for solving the technical problems is as follows: a hydraulic motor with flushing function, comprising: the balance disc is fixedly connected with one side of the rotor to form a high-pressure cavity, and one end of the linkage shaft penetrates through the balance disc and stretches into the cavity; the rotor is provided with a flushing flow passage, one end of the flushing flow passage is communicated with the high-pressure cavity, and the other end of the flushing flow passage is communicated with the cavity.

Therefore, high-pressure hydraulic oil can enter the flushing flow passage from the high-pressure cavity, and then enters the cavity of the rotor through the flushing flow passage, so that flushing and cooling of the inner wall of the rotor and the surface of the linkage shaft are realized, and the lubricity between the rotor and the linkage shaft can be improved.

Further, in order to limit the flushing amount, a throttling element is arranged in the flushing flow channel.

Further, the method further comprises the following steps: and a sealing disk mounted within the cavity.

Further, a step surface is arranged on the inner wall of the rotor in a ring mode, the step surface enables the inner diameter D1 of the inner wall of the rotor, which is positioned on the left side of the step surface, to be smaller than the inner diameter D2 of the inner wall of the rotor, which is positioned on the right side of the step surface, and an annular groove is formed between the sealing disc and the inner wall of the rotor.

Further, the annular groove is communicated with the other end of the flushing flow passage.

Further, the flushing flow path includes: the first runner is communicated with the second runner, the first runner is communicated with the high-pressure cavity, and the second runner is communicated with the cavity.

Further, the restriction is located in the first flow passage.

Further, the inner diameter of the first flow channel is larger than the inner diameter of the second flow channel.

Further, the inner wall of the rotor is provided with a spline.

Further, the throttling element is a damping plug.

The hydraulic motor with the flushing function has the beneficial effects that the flushing flow passage is formed in the rotor, and the flushing flow passage is communicated with the high-pressure cavity and the cavity, so that high-pressure hydraulic oil can be used as flushing liquid when being used as a working medium of the hydraulic motor, the inner wall of the rotor and the linkage shaft can be flushed and cooled, the lubricity between the rotor and the linkage shaft can be increased, and the service life of the hydraulic motor is prolonged. The throttle can restrict the flushing amount entering the cavity, and prevent excessive flushing liquid from influencing the operation of the hydraulic motor. The annular groove can promote the washing effect.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of a hydraulic motor of the present utility model.

Fig. 2 is an enlarged view of the utility model at a in fig. 1.

Fig. 3 is a perspective view of the rotor of the present utility model.

Fig. 4 is a cross-sectional view of a throttle of the present utility model.

Fig. 5 is a cross-sectional view of the rotor of the present utility model.

Fig. 6 is an enlarged view of the present utility model at B in fig. 5.

In the figure: 1. a balancing disk; 2. a rotor; 3. a linkage shaft; 4. a high pressure chamber; 5. a throttle member; 6. a sealing plate; 7. a main flow passage; 21. a cavity; 22. flushing the flow channel; 23. a step surface; 24. an annular groove; 25. a spline; 221. a first flow passage; 222. a second flow passage; 51. a damping hole; 52. and an inner hexagonal hole.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 6, the hydraulic motor with a flushing function of the present utility model includes: balance disc 1, rotor 2 and universal driving shaft 3, rotor 2 is inside to be equipped with a cavity 21, and balance disc 1 and one side fixed connection of rotor 2 are in order to form high-pressure chamber 4, and the one end of universal driving shaft 3 runs through balance disc 1 and stretches into in the cavity 21. Wherein, the rotor 2 is provided with a flushing runner 22, one end of the flushing runner 22 is communicated with the high-pressure cavity 4, and the other end of the flushing runner 22 is communicated with the cavity 21. In other words, the flushing flow passage 22 of the present utility model is directly arranged on the rotor 2, the flushing flow passage 22 is directly communicated with the high pressure cavity 4, the high pressure cavity 4 is communicated with the oil inlet (not shown in the figure), high pressure hydraulic oil can enter the flushing flow passage 22 from the high pressure cavity 4, and then enter the cavity 21 of the rotor 2 through the flushing flow passage 22, so as to realize flushing and cooling of the inner wall of the rotor 2 and the surface of the linkage shaft 3, and further increase the lubricity between the rotor 2 and the linkage shaft 3. The flushing runner 22 is directly machined on the rotor 2, so that machining of the runner on other parts can be omitted, the machining process can be simplified, the length of the runner can be shortened, and high-pressure hydraulic oil can quickly enter the rotor 2.

For example, the rotor 2 is provided with an annular groove on the side close to the balance disc 1, which forms a high-pressure chamber 4 with the surface of the balance disc 1 when the balance disc 1 is connected with the rotor 2.

It will be appreciated that the hydraulic motor of the present utility model also includes components such as a housing, output shaft, port plate, rear cover, etc., which function as in the prior art and will not be described in detail herein.

Specifically, a throttle 5 is provided in the flushing flow path 22. The throttle 5 can control the flow rate of the high-pressure hydraulic oil flowing through the flushing flow passage 22, and prevent the working of the hydraulic motor from being affected by the excessive flow rate of the flushing high-pressure hydraulic oil. For example, the orifice 5 is a damping plug, one end of the orifice 5 is a damping hole 51, the other end is a hexagonal hole 52, the inner diameter of the damping hole 51 is far smaller than the inner diameter of the hexagonal hole 52, and the damping hole 51 is communicated with the hexagonal hole 52. The high-pressure hydraulic oil enters the damping hole 51 through the inner hexagonal hole 52, and the damping hole 51 limits the flow of the high-pressure hydraulic oil.

For example, the flush flow passage 22 includes: a first flow passage 221 and a second flow passage 222, the first flow passage 221 being in communication with the high pressure chamber 4, the second flow passage 222 being in communication with the cavity 21. The inner diameter of the first flow channel 221 is greater than the inner diameter of the second flow channel 222. The throttle 5 is located in the first flow channel 221. Because the pressure of the hydraulic oil in the high-pressure chamber 4 is relatively high, the inner diameter of the first flow passage 221 is larger than that of the second flow passage 222, so that the high-pressure hydraulic oil can be smoothly introduced into the flushing flow passage 22. However, since the amount of flushing introduced becomes large after the inner diameter of the first flow passage 221 is large, the present utility model installs the throttle 5 in the first flow passage 221 in order to control the flow rate of the high-pressure hydraulic oil. The flushing flow passage 22 is communicated with the high-pressure cavity 4, so that the same oil inlet can be used for feeding oil, the modification of the structure of the shell can be reduced, and the processing procedure is simplified. For example, the flushing liquid can be returned from the drain opening back into the tank via the main flow channel 7.

The hydraulic motor of the present utility model further comprises a sealing disc 6, the sealing disc 6 being mounted in the cavity 21. It should be noted that, the sealing disc 6 is located at the other side of the rotor 2, and the sealing disc 6 can seal the other side of the cavity 21 of the rotor 2, so that after the high-pressure hydraulic oil enters the cavity 21, the surface of the spline 25 and the linkage shaft 3 on the inner wall of the rotor 2 can be fully flushed. For example, a step surface 23 is formed on the inner wall of the rotor 2 in a ring shape, the step surface 23 makes the inner diameter D1 of the inner wall of the rotor 2 located at the left side of the step surface 23 smaller than the inner diameter D2 of the inner wall of the rotor 2 located at the right side of the step surface 23, and the step surface 23 makes an annular groove 24 formed between the sealing disc 6 and the inner wall of the rotor 2. The annular groove 24 communicates with the other end of the flushing flow path 22. That is, the outlet of the flushing flow path 22 communicates with the annular groove 24, and the high-pressure hydraulic oil passes through the flushing flow path 22 and then enters the annular groove 24, and the annular groove 24 communicates with the cavity 21. During the operation of the hydraulic motor, the rotor 2 always rotates, and the high-pressure hydraulic oil can circulate along the surface of the sealing disc 6 to wash and cool the spline 25 and the linkage shaft 3, thereby increasing lubricity. And, the flushing runner 22 has connected high-pressure chamber 4 and cavity 21, can reduce the pressure differential of sealing disk 6 both sides, also can play the effect of protecting sealing disk 6, prolongs sealing disk 6's life.

In summary, according to the present utility model, the flushing flow passage 22 is formed on the rotor 2, and the high-pressure chamber 4 and the cavity 21 are communicated through the flushing flow passage 22, so that the high-pressure hydraulic oil can be used as a working medium of the hydraulic motor and also can be used as flushing liquid to flush and cool the inner wall of the rotor 2 and the linkage shaft 3, and the lubricity between the rotor 2 and the linkage shaft 3 can be increased. The restriction 5 can limit the amount of flushing into the cavity 21 and prevent excessive flushing liquid from affecting the operation of the hydraulic motor. The annular groove 24 can enhance the flushing effect.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined as the scope of the claims.

Claims (10)

1. A hydraulic motor having a flushing function, comprising:

the balance disc (1), the rotor (2) and the linkage shaft (3), wherein a cavity (21) is formed in the rotor (2), the balance disc (1) is fixedly connected with one side of the rotor (2) to form a high-pressure cavity (4), and one end of the linkage shaft (3) penetrates through the balance disc (1) and stretches into the cavity (21);

the rotor (2) is provided with a flushing flow passage (22), one end of the flushing flow passage (22) is communicated with the high-pressure cavity (4), and the other end of the flushing flow passage (22) is communicated with the cavity (21).

2. A hydraulic motor with flushing function according to claim 1, characterized in that a throttle (5) is provided in the flushing flow channel (22).

3. The hydraulic motor with flush function according to claim 1, further comprising: -a sealing disc (6), said sealing disc (6) being mounted in said cavity (21).

4. A hydraulic motor with flushing function according to claim 3, characterized in that a step surface (23) is provided on the inner wall of the rotor (2), the step surface (23) makes the inner diameter D1 of the inner wall of the rotor (2) located at the left side of the step surface (23) smaller than the inner diameter D2 of the inner wall of the rotor (2) located at the right side of the step surface (23), and the step surface (23) makes an annular groove (24) formed between the sealing disc (6) and the inner wall of the rotor (2).

5. The hydraulic motor with flushing function as set forth in claim 4, characterized in that the annular groove (24) communicates with the other end of the flushing flow passage (22).

6. The hydraulic motor with flushing function according to claim 2, characterized in that the flushing flow channel (22) comprises: -a first flow channel (221) and a second flow channel (222), said first flow channel (221) being in communication with said high pressure chamber (4), said second flow channel (222) being in communication with said cavity (21).

7. The hydraulic motor with flushing function according to claim 6, characterized in that the throttle (5) is located in the first flow channel (221).

8. The hydraulic motor with flushing function according to claim 6, characterized in that the inner diameter of the first flow channel (221) is larger than the inner diameter of the second flow channel (222).

9. A hydraulic motor with flushing function according to claim 1, characterized in that the inner wall of the rotor (2) is provided with splines (25).

10. A hydraulic motor with flushing function according to claim 2, characterized in that the throttle (5) is a damping screw plug.