CN219691665U

CN219691665U - Hydraulic motor

Info

Publication number: CN219691665U
Application number: CN202321202366.8U
Authority: CN
Inventors: 汪立平; 郝春友; 胡静; 董可; 李磊; 徐稷旺; 刘鑫德; 羊鹏
Original assignee: Jiangsu Hengli Hydraulic Technology Co Ltd
Current assignee: Jiangsu Hengli Hydraulic Technology Co Ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-09-15
Anticipated expiration: 2033-05-18

Abstract

The utility model discloses a hydraulic motor, comprising: a rear cover having a first chamber; the cover plate is connected with the rear cover; the control valve is connected with one end of the rear cover; the variable plunger is arranged in the first chamber, and a piston is arranged at one end of the variable plunger, which is far away from the control valve; the deflector rod penetrates through the variable plunger and the rear cover, one end of the deflector rod is inserted into the cover plate, and the other end of the deflector rod is inserted into the valve plate; the displacement sensor is connected with the rear cover, inserted into the cover plate and connected with one end of the deflector rod. According to the utility model, the displacement sensor can monitor the moving distance of the deflector rod, so that the rotating angle of the valve plate is monitored, the displacement of the hydraulic motor is monitored, and the precision of controlling the displacement of the hydraulic motor is improved.

Description

Hydraulic motor

Technical Field

The utility model relates to the technical field of hydraulic equipment, in particular to a hydraulic motor.

Background

The hydraulic motor belongs to a high-end hydraulic element and is mainly applied to matching of vehicles and engineering machinery, metallurgical machinery, machine tools and other equipment. With the progress of social development and industrial technology level, modern high-end industrial equipment is continuously developed towards high reliability and intelligence, and a hydraulic motor is used as one of key elements of a hydraulic system, so that the reliability of the hydraulic motor is crucial to a host machine. The existing hydraulic motor cannot monitor the displacement of the hydraulic motor in real time, and further cannot control the precision of the hydraulic motor.

Disclosure of Invention

The utility model aims to solve the technical problems that: the utility model provides a hydraulic motor, which can monitor the displacement of the hydraulic motor in real time, so that the displacement of the hydraulic motor can be controlled in a closed loop, the precision of the displacement control of the hydraulic motor is improved, and hysteresis is reduced under the same flow displacement.

The technical scheme adopted for solving the technical problems is as follows: a hydraulic motor, comprising: a rear cover having a first chamber; a cover plate connected to the rear cover; the control valve is connected with one end of the rear cover; the variable plunger is arranged in the first chamber, and a piston is arranged at one end, far away from the control valve, of the variable plunger; the deflector rod penetrates through the variable plunger and the rear cover, one end of the deflector rod is inserted into the cover plate, and the other end of the deflector rod is inserted into the valve plate; and the displacement sensor is connected with the rear cover, inserted into the cover plate and connected with one end of the deflector rod.

Therefore, in the working process of the hydraulic motor, the moving distance of the deflector rod can be monitored through the displacement sensor, and then the rotating angle of the valve plate is monitored, so that the displacement of the hydraulic motor can be monitored, the precision of the displacement control of the hydraulic motor is improved, meanwhile, the rotating angle of the valve plate is monitored through the moving distance of the deflector rod, the occupied space of the displacement sensor can be reduced, and the space utilization rate is improved.

Further, the method further comprises the following steps: and the temperature and pressure integrated sensor is connected with the rear cover.

Further, a second cavity is formed in one side, close to the rear cover, of the cover plate, a third through hole is formed in one side, close to the displacement sensor, of the cover plate, the second cavity is communicated with the third through hole, one end of the deflector rod is inserted into the second cavity, and the displacement sensor penetrates through the third through hole and is inserted into the second cavity to be connected with one end of the deflector rod.

Further, the displacement sensor includes: the displacement sensor comprises a displacement sensor body, a measuring rod and a detecting head, wherein one end of the measuring rod is inserted into the displacement sensor body and is in sliding connection with the displacement sensor body, the other end of the measuring rod is connected with the detecting head, and the detecting head is connected with one end of the deflector rod. Thereby, the measuring rod can slide in the displacement sensor body, so that the movement of the shifting rod can be monitored.

Further, a second through hole is formed in one side, close to the cover plate, of the rear cover, the second cavity, the first cavity and the second through hole are communicated, and the deflector rod penetrates through the second through hole.

Further, a third groove is further formed in one side, close to the cover plate, of the rear cover, and the bottom of the temperature and pressure integrated sensor is inserted into the third groove.

Further, a first through hole is formed in the variable plunger, and the deflector rod penetrates through the first through hole.

Further, the lever includes: the first connecting section, the second connecting section, the third connecting section and the fourth connecting section; the first connecting section, the second connecting section, the third connecting section and the fourth connecting section are sequentially connected, the first connecting section is inserted into the second cavity, the second connecting section penetrates through the second through hole, the third connecting section penetrates through the first through hole, and the fourth connecting section is inserted into the valve plate.

Further, a first groove is formed in the outer peripheral surface of the first connecting section, and the probe is inserted into the first groove.

Further, a seal is provided between the rear cover and the cover plate. Therefore, the rear cover and the cover plate can be sealed, and the hydraulic oil can be ensured not to leak.

Further, the length d1 of the second through hole is larger than the diameter d2 of the second connecting section, and the width d3 of the second through hole is equal to the diameter d2 of the second connecting section. Therefore, the deflector rod can be prevented from shaking in the moving process, and the accuracy of monitoring the rotation angle of the valve plate is improved.

Compared with the prior art, the utility model has the beneficial effects that:

in the working process of the hydraulic motor, the movement of the deflector rod can drive the rotation angle of the valve plate to change, the movement distance of the deflector rod can be monitored through the displacement sensor, the rotation angle of the valve plate can be monitored, and then the displacement of the hydraulic motor can be monitored, so that the precision of displacement control of the hydraulic motor is improved, meanwhile, the movement distance of the deflector rod is monitored to monitor the rotation angle of the valve plate, the occupied space of the displacement sensor can be reduced, and the space utilization rate is improved.

Drawings

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

FIG. 1 is a schematic cross-sectional view of a hydraulic motor according to the present utility model;

FIG. 2 is a schematic view of a temperature and pressure integrated sensor and a displacement sensor according to the present utility model, wherein the sensor is installed at a first view angle;

FIG. 3 is a schematic view of a temperature and pressure integrated sensor and a displacement sensor according to the present utility model with a second view angle;

FIG. 4 is a schematic view of the structure of a variable displacement plunger of the present utility model;

FIG. 5 is a schematic cross-sectional view of a lever according to the present utility model;

FIG. 6 is a schematic view of the rear cover of the present utility model at a first view angle;

FIG. 7 is a schematic view of a second view of the rear cover of the present utility model;

FIG. 8 is a schematic view of a cover plate according to a first view angle of the present utility model;

FIG. 9 is a schematic view of a cover plate according to a second view of the present utility model;

fig. 10 is a schematic structural diagram of the displacement sensor of the present utility model.

In the figure: 1. a variable plunger; 101. a first through hole; 102. a piston; 2. a deflector rod; 201. a first connection section; 202. a second connection section; 203. a third connecting section; 204. a fourth connecting section; 205. a first groove; 206. a second groove; 3. a temperature and pressure integrated sensor; 4. a rear cover; 401. a first chamber; 402. a second through hole; 403. a third groove; 5. a cover plate; 501. a second chamber; 502. an annular groove; 503. a third through hole; 6. a displacement sensor; 601. a displacement sensor body; 602. a measuring rod; 603. a probe; 7. a seal; 8. a port plate; 9. a cylinder; 10. and a control valve.

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 10, the hydraulic motor of the present embodiment includes: the variable valve comprises a rear cover 4, a cover plate 5, a control valve 10, a variable plunger 1, a deflector rod 2 and a displacement sensor 6, wherein the rear cover 4 is provided with a first cavity 401, the cover plate 5 is connected with the rear cover 4, the control valve 10 is connected with one end of the rear cover 4, the variable plunger 1 is arranged in the first cavity 401, one end, away from the control valve 10, of the variable plunger 1 is provided with a piston 102, the deflector rod 2 penetrates through the variable plunger 1 and the rear cover 4, one end of the deflector rod 2 is inserted into the cover plate 5, the other end of the deflector rod 2 is inserted into a valve plate 8, the displacement sensor 6 is connected with the rear cover 4, and the displacement sensor 6 is inserted into the cover plate 5 and connected with one end of the deflector rod 2. Specifically, the port plate 8 is connected to a cylinder 9. It should be noted that, after the control valve 10 passes through hydraulic oil, hydraulic oil can get into the first cavity 401 and promote variable plunger 1 and remove in the first cavity 401, can drive driving lever 2 and remove when variable plunger 1 removes, driving lever 2 removes the angle that can change valve plate 8, from this, displacement that monitors driving lever 2 through displacement sensor 6 can indirectly monitor valve plate 8's rotation angle, thereby the discharge capacity of hydraulic motor can be monitored, thereby the discharge capacity of hydraulic motor can closed-loop control, the precision of hydraulic motor discharge capacity control is improved, reduce the hysteresis under the same flow discharge capacity, simultaneously, the displacement sensor 6 takes up space through monitoring driving lever 2's displacement distance and monitor valve plate 8 some rotation angles, the space utilization is improved.

In this embodiment, further comprising: and the temperature and pressure integrated sensor 3 is connected with the rear cover 4. Specifically, an oil path channel is formed in the rear cover 4 and is communicated with an oil path of the control valve 10, a probe part of the temperature-pressure integrated sensor 3 extends into the oil path channel, the temperature and pressure of hydraulic oil can be monitored in real time through the temperature-pressure integrated sensor 3, whether the working temperature of the hydraulic motor is in a normal range or not is judged according to monitored temperature information, whether the hydraulic motor is in a pressure-holding state or not is judged according to monitored pressure information, the hydraulic motor is prevented from being damaged, and the service life of the hydraulic motor is guaranteed.

In this embodiment, a second cavity 501 is formed on a side of the cover plate 5 close to the rear cover 4, a third through hole 503 is formed on a side of the cover plate 5 close to the displacement sensor 6, the second cavity 501 is communicated with the third through hole 503, one end of the shift lever 2 is inserted into the second cavity 501, and the displacement sensor 6 passes through the third through hole 503 and is inserted into the second cavity 501 to be connected with one end of the shift lever 2.

In the present embodiment, the displacement sensor 6 includes: the displacement sensor comprises a displacement sensor body 601, a measuring rod 602 and a detecting head 603, wherein one end of the measuring rod 602 is inserted into the displacement sensor body 601 and is in sliding connection with the displacement sensor body 601, the other end of the measuring rod 602 is connected with the detecting head 603, and the detecting head 603 is connected with one end of a deflector rod 2. Therefore, when the deflector rod 2 moves, the detector head 603 and the measuring rod 602 can be driven to move, and the measuring rod 602 can slide in the displacement sensor 6 body, so that the movement of the deflector rod 2 is monitored.

In this embodiment, a second through hole 402 is formed in one side of the rear cover 4, which is close to the cover plate 5, the second cavity 501, the first cavity 401 and the second through hole 402 are communicated, and the lever 2 penetrates through the second through hole 402; a third groove 403 is further formed in one side, close to the cover plate 5, of the rear cover 4, and the bottom of the temperature and pressure integrated sensor 3 is inserted into the third groove 403. Specifically, the third groove 403 communicates with the oil passage.

For example, the variable plunger 1 is provided with a first through hole 101, the lever 2 penetrates the first through hole 101, and the lever 2 includes: a first connection section 201, a second connection section 202, a third connection section 203, and a fourth connection section 204; the first connecting section 201, the second connecting section 202, the third connecting section 203 and the fourth connecting section 204 are sequentially connected, the first connecting section 201 is inserted into the second cavity 501, the second connecting section 202 penetrates through the second through hole 402, the third connecting section 203 penetrates through the first through hole 101, and the fourth connecting section 204 is inserted into the valve plate 8; the outer peripheral surface of the first connecting section 201 is provided with a first groove 205, and the probe 603 is inserted into the first groove 205; the length d1 of the second through hole 402 is greater than the diameter d2 of the second connection section 202, and the width d3 of the second through hole 402 is equal to the diameter d2 of the second connection section 202. Specifically, the third connecting section 203 is provided with a second groove 206, and a screw is inserted into the second groove 206, so that the variable plunger 1 and the driving lever 2 are fixedly connected. The stirring rod 2 can be prevented from shaking in the moving process, and the accuracy of monitoring the rotation angle of the valve plate 8 is improved.

In the present embodiment, a seal 7 is provided between the rear cover 4 and the cover plate 5. Specifically, the annular groove 502 is formed in one side, close to the rear cover 4, of the cover plate 5, and the sealing piece 7 is embedded in the annular groove 502, so that the rear cover 4 and the cover plate 5 can be sealed, and hydraulic oil is prevented from leaking.

The working process of the utility model is as follows: whether the hydraulic oil is introduced into the first cavity 401 can be controlled through the control valve 10, the variable plunger 1 can be driven to move in the first cavity 401 by the hydraulic oil, so that the deflector rod 2 is driven to move, the angle of the valve plate 8 can change along with the movement of the deflector rod 2, at the moment, the moving distance of the deflector rod 2 can be monitored through the displacement sensor 6, the rotating angle of the valve plate 8 is further monitored, the displacement of the hydraulic motor is monitored, the displacement of the hydraulic motor can be controlled in a closed loop mode, and the precision of the displacement control of the hydraulic motor is improved.

In summary, in the hydraulic motor, the displacement sensor 6 can monitor the moving distance of the deflector rod 2, and further monitor the rotation angle of the valve plate 8, so that the displacement of the hydraulic motor is monitored, the displacement of the hydraulic motor can be controlled in a closed loop, and the accuracy of controlling the displacement of the hydraulic motor is improved; meanwhile, the rotation angle of the valve plate 8 is monitored by monitoring the movement distance of the deflector rod 2, so that the occupied space of the displacement sensor 6 can be reduced, and the space utilization rate is improved; through warm-pressing integral type sensor 3, can realize the real-time supervision to the temperature, the pressure of hydraulic oil, judge whether hydraulic motor's operating temperature is in normal range according to the temperature information that monitors, judge whether hydraulic motor is in the state of holding down the pressure according to the pressure information that monitors, ensure that hydraulic motor can not be damaged, guarantee hydraulic motor's life.

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

1. A hydraulic motor, comprising:

-a rear cover (4), the rear cover (4) having a first chamber (401);

the cover plate (5), the said cover plate (5) is connected with said back cover (4);

a control valve (10), wherein the control valve (10) is connected with one end of the rear cover (4);

a variable plunger (1), wherein the variable plunger (1) is arranged in the first chamber (401), and a piston (102) is arranged at one end of the variable plunger (1) far away from the control valve (10);

the deflector rod (2) penetrates through the variable plunger (1) and the rear cover (4), one end of the deflector rod (2) is inserted into the cover plate (5), and the other end of the deflector rod (2) is inserted into the valve plate (8);

the displacement sensor (6) is connected with the rear cover (4), and the displacement sensor (6) is inserted into the cover plate (5) and connected with one end of the deflector rod (2).

2. The hydraulic motor of claim 1, further comprising: and the temperature and pressure integrated sensor (3) is connected with the rear cover (4).

3. The hydraulic motor according to claim 1, wherein a second chamber (501) is provided on a side of the cover plate (5) close to the rear cover (4), a third through hole (503) is provided on a side of the cover plate (5) close to the displacement sensor (6), the second chamber (501) is communicated with the third through hole (503), one end of the shift lever (2) is inserted into the second chamber (501), and the displacement sensor (6) passes through the third through hole (503) and is inserted into the second chamber (501) to be connected with one end of the shift lever (2).

4. A hydraulic motor according to claim 3, characterized in that the displacement sensor (6) comprises: the displacement sensor comprises a displacement sensor body (601), a measuring rod (602) and a detecting head (603), wherein one end of the measuring rod (602) is inserted into the displacement sensor body (601) and is in sliding connection with the displacement sensor body (601), the other end of the measuring rod (602) is connected with the detecting head (603), and the detecting head (603) is connected with one end of the deflector rod (2).

5. The hydraulic motor according to claim 4, wherein a second through hole (402) is formed in a side, close to the cover plate (5), of the rear cover (4), the second chamber (501), the first chamber (401) and the second through hole (402) are communicated, and the deflector rod (2) penetrates through the second through hole (402).

6. The hydraulic motor according to claim 2, wherein a third groove (403) is further formed in a side, close to the cover plate (5), of the rear cover (4), and the bottom of the warm-pressing integrated sensor (3) is inserted into the third groove (403).

7. The hydraulic motor according to claim 5, characterized in that the variable plunger (1) is provided with a first through hole (101), the lever (2) penetrating the first through hole (101).

8. The hydraulic motor according to claim 7, characterized in that said lever (2) comprises: a first connection section (201), a second connection section (202), a third connection section (203), and a fourth connection section (204); the first connecting section (201), the second connecting section (202), the third connecting section (203) and the fourth connecting section (204) are sequentially connected, the first connecting section (201) is inserted into the second cavity (501), the second connecting section (202) penetrates through the second through hole (402), the third connecting section (203) penetrates through the first through hole (101), and the fourth connecting section (204) is inserted into the valve plate (8).

9. The hydraulic motor according to claim 8, wherein a first groove (205) is formed in an outer circumferential surface of the first connection section (201), and the probe (603) is inserted into the first groove (205).

10. Hydraulic motor according to claim 1, characterized in that a seal (7) is provided between the rear cover (4) and the cover plate (5).

11. The hydraulic motor according to claim 8, characterized in that the length d1 of the second through hole (402) is larger than the diameter d2 of the second connecting section (202), the width d3 of the second through hole (402) being equal to the diameter d2 of the second connecting section (202).