Cycloid hydraulic motor with speed measurement small shaft

Abstract

The utility model relates to the technical field of hydraulic motors, in particular to a cycloid hydraulic motor with a speed measuring small shaft, which comprises a front shell, an output shaft is mounted on the inner side wall of the front shell, and a large linkage shaft is fixedly mounted at the rear end of the output shaft. Hydraulic oil is introduced into a rear shell through an oil inlet hole and enters a working cavity between a stator and a rotor in a cycloid stator and rotor pair through a compensation disc, an oil distribution disc and a rear partition plate, under the action of oil pressure, the rotor is pressed to one side of a low-pressure cavity and rotates along inner teeth of a stator sleeve, transmission of the rotor comprises rotation and revolution, the rotation and revolution are transmitted to an output shaft through a large linkage shaft, and meanwhile the output shaft is driven to rotate. The rotor and the oil distribution disc operate synchronously, it can be guaranteed that the rotating speed of the motor and the rotating speed of the output shaft are kept in a synchronous state, errors of rotating speed counting caused by uncontrollable factors can be avoided, the accuracy of speed measurement can be guaranteed, and the speed measurement small shaft body and the small linkage shaft rotate synchronously through the transmission pin; and the motor continuously outputs the rotating speed and the torque.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic motor technology, specifically a cycloidal hydraulic motor with a speed measuring shaft. Background Technology

[0002] A hydraulic motor is a device that converts hydraulic energy into mechanical energy. It can convert the liquid pressure energy provided by a hydraulic pump into the mechanical energy of its output shaft, which is manifested as torque and speed. Hydraulic motors are mainly used in injection molding machinery, ships, cranes, hoists and other applications. They can provide continuous rotational motion and output mechanical energy.

[0003] In hydraulic systems, the motor speed is changed by controlling the flow of hydraulic oil. However, due to the susceptibility to leakage in various components such as pumps, valves, and oil pipes, it is often impossible to accurately control the desired speed. Therefore, it is necessary to perform precise digital detection and strict control of the hydraulic system's flow rate. To address this, a cycloidal hydraulic motor with a speed measuring shaft is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a cycloidal hydraulic motor with a speed measuring shaft to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cycloidal hydraulic motor with a speed measuring shaft, comprising a front housing, an output shaft mounted on the inner sidewall of the front housing, a large linkage shaft fixedly mounted on the rear end of the output shaft, a cycloidal stator-rotor pair fixedly mounted on the outer sidewall of the large linkage shaft, a rear partition plate mounted on the rear end of the cycloidal stator-rotor pair, an oil distribution plate mounted on the end of the rear partition plate away from the cycloidal stator-rotor pair, a compensation plate mounted on the rear end of the oil distribution plate, a rear housing fixedly connected to the outer sidewall of the compensation plate, a front surface of the rear housing fixedly connected to the rear surface of the rear partition plate, a small linkage shaft fixedly mounted on the rear end of the large linkage shaft, a transmission pin fixedly mounted on the rear end of the small linkage shaft, and a speed measuring shaft body mounted on the end of the transmission pin away from the small linkage shaft.

[0006] As a further preferred embodiment of this technical solution: a speed measuring flange is installed on the outer side of the speed measuring shaft body, and a high-pressure dustproof sealing ring is provided between the speed measuring flange and the speed measuring shaft body.

[0007] As a further preferred embodiment of this technical solution: a first bearing is installed on the inner sidewall of the front housing, and the output shaft is rotatably connected to the front housing through the first bearing.

[0008] As a further preferred embodiment of this technical solution: a second bearing is installed on the inner wall of the speed measuring flange, and the speed measuring shaft body and the speed measuring flange are rotatably connected through the second bearing.

[0009] As a further preferred embodiment of this technical solution: a sealing element is provided between the speed measuring flange and the rear housing.

[0010] As a further preferred embodiment of this technical solution, the outer side wall of the rear housing is provided with an oil inlet hole.

[0011] As a further preferred embodiment of this technical solution: the cycloidal stator-rotor pair is provided with a working cavity between the stator and the rotor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention introduces hydraulic oil into the rear housing through the inlet hole, and then into the working chamber between the stator and rotor in the cycloidal rotor-stator pair via the compensation plate, distribution plate, and rear partition. Under the action of oil pressure, the rotor is pressed towards one side of the low-pressure chamber and rotates along the internal teeth of the stator sleeve. The rotor's transmission includes self-rotation and revolution, which is transmitted to the output shaft through the large linkage shaft. At the same time, the rotor is also transmitted to the distribution plate through the small linkage shaft. The rotor and the distribution plate operate synchronously, which can ensure that the motor speed and the output shaft speed remain synchronized. This avoids errors in speed counting caused by uncontrollable factors and ensures the accuracy of speed measurement. The transmission pin makes the speed measuring small shaft body rotate synchronously with the small linkage shaft, so that the motor outputs speed and torque without interruption. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 2 In this utility model Figure 1 Enlarged diagram of area A.

[0016] In the diagram: 1. Output shaft; 2. Front housing; 3. First bearing; 4. Large linkage shaft; 5. Cycloidal stator and rotor pair; 6. Small linkage shaft; 7. Transmission pin; 8. Oil distribution plate; 9. Compensation plate; 10. Seal; 11. Second bearing; 12. Speed ​​measuring flange; 13. High-pressure dustproof seal ring; 14. Speed ​​measuring small shaft body; 15. Rear housing; 16. Rear partition. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0019] Please refer to all the accompanying drawings in the specification. This utility model provides a technical solution: a cycloidal hydraulic motor with a speed measuring shaft, including a front housing 2, an output shaft 1 installed on the inner side wall of the front housing 2, a large linkage shaft 4 fixedly installed at the rear end of the output shaft 1, a cycloidal stator-rotor pair 5 fixedly installed on the outer side wall of the large linkage shaft 4, a rear partition 16 installed at the rear end of the cycloidal stator-rotor pair 5, an oil distribution plate 8 installed at the end of the rear partition 16 away from the cycloidal stator-rotor pair 5, a compensation plate 9 installed at the rear end of the oil distribution plate 8, a rear housing 15 fixedly connected to the outer side wall of the compensation plate 9, a fixed connection between the front surface of the rear housing 15 and the rear surface of the rear partition 16, a small linkage shaft 6 fixedly installed at the rear end of the large linkage shaft 4, a fixed connection between the outer side wall of the small linkage shaft 6 and the oil distribution plate 8, a transmission pin 7 fixedly installed at the rear end of the small linkage shaft 6, and a speed measuring shaft body 14 installed at the end of the transmission pin 7 away from the small linkage shaft 6. Hydraulic oil is introduced into the rear housing 15 through the oil inlet hole, and enters the working chamber between the stator and rotor in the cycloidal rotor pair 5 through the compensation plate 9, the oil distribution plate 8, and the rear partition 16. Under the action of oil pressure, the rotor is pressed to one side of the low-pressure chamber and rotates along the internal teeth of the stator sleeve. The rotor's transmission includes self-rotation and revolution, which is transmitted to the output shaft 1 through the large linkage shaft 4. The rotor is then transmitted to the oil distribution plate 8 through the small linkage shaft 6. The rotor and the oil distribution plate 8 rotate synchronously. At the same time, a straight coupling is made on the small linkage shaft 6. By machining pin holes on the small linkage shaft 6 and machining grooves on the speed measuring shaft body 14, a speed measuring device with a straight coupling structure is formed. The speed measuring shaft body 14 and the small linkage shaft 6 rotate synchronously through the transmission pin 7. By connecting an external speed measuring instrument, the speed output of the motor can be detected in real time. The oil distribution plate 8 makes the high-pressure oil and low-pressure oil alternate continuously, so that the motor outputs speed and torque without interruption.

[0020] In this embodiment, specifically: a speed measuring flange 12 is installed on the outside of the speed measuring shaft body 14, and a high-pressure dustproof sealing ring 13 is provided between the speed measuring flange 12 and the speed measuring shaft body 14.

[0021] In this embodiment, specifically: a first bearing 3 is installed on the inner side wall of the front housing 2, and the output shaft 1 is rotatably connected to the front housing 2 through the first bearing 3.

[0022] In this embodiment, specifically: a second bearing 11 is installed on the inner side wall of the speed measuring flange 12, and the speed measuring shaft body 14 and the speed measuring flange 12 are rotatably connected through the second bearing 11.

[0023] In this embodiment, specifically: a sealing element 10 is provided between the speed measuring flange 12 and the rear housing 15.

[0024] In this embodiment, specifically: the outer side wall of the rear housing 15 is provided with an oil inlet hole.

[0025] In this embodiment, specifically: the cycloidal stator-rotor pair 5 is provided with a working cavity between the stator and the rotor.

[0026] The working principle of this utility model is as follows: Hydraulic oil is introduced into the rear housing 15 through the oil inlet hole, and enters the working chamber between the stator and rotor in the cycloidal rotor-stator pair 5 through the compensation plate 9, the distribution plate 8, and the rear partition 16. Under the action of oil pressure, the rotor is pressed towards the low-pressure chamber and rotates along the internal teeth of the stator sleeve. The rotor's transmission includes self-rotation and revolution, which is transmitted to the output shaft 1 through the large linkage shaft 4. At the same time, the rotor is also transmitted to the distribution plate 8 through the small linkage shaft 6. The rotor and the distribution plate 8 rotate synchronously. Meanwhile, a straight coupling is installed on the small linkage shaft 6 to... The small linkage shaft 6 is machined with pin holes, and the speed measuring small shaft body 14 is machined with grooves to form a one-piece coupling structure for the speed measuring device. This ensures that the motor speed and the output shaft 1 speed are kept synchronized, avoiding errors in speed counting caused by uncontrollable factors and ensuring the accuracy of speed measurement. The speed measuring small shaft body 14 and the small linkage shaft 6 are made to rotate synchronously through the transmission pin 7. The speed measuring instrument is connected to the outside to detect the motor output speed in real time. The oil distribution plate 8 makes the high-pressure oil and low-pressure oil alternate continuously, so that the motor outputs speed and torque without interruption.

Claims

1. A gerotor hydraulic motor with a speed measuring small shaft, comprising a front housing (2), characterized in that: The inner side wall of the front shell (2) is provided with an output shaft (1), the rear end of the output shaft (1) is fixedly provided with a large linkage shaft (4), the outer side wall of the large linkage shaft (4) is fixedly provided with a cycloidal pair (5), the rear end of the cycloidal pair (5) is provided with a rear baffle (16), one end of the rear baffle (16) away from the cycloidal pair (5) is provided with an oil distribution disc (8), the rear end of the oil distribution disc (8) is provided with a compensation disc (9), the outer side wall of the compensation disc (9) is fixedly connected with a rear shell (15), the front surface of the rear shell (15) and the rear surface of the rear baffle (16) are fixedly connected, the rear end of the large linkage shaft (4) is fixedly provided with a small linkage shaft (6), the outer side wall of the small linkage shaft (6) is fixedly connected with the oil distribution disc (8), the rear end of the small linkage shaft (6) is fixedly provided with a transmission pin (7), one end of the transmission pin (7) away from the small linkage shaft (6) is provided with a speed measuring small shaft body (14).

2. The gerotor hydraulic motor with speed measuring pinion according to claim 1, characterized in that: The outer side of the speed measuring small shaft body (14) is provided with a speed measuring flange (12), and a high-pressure dustproof sealing ring (13) is arranged between the speed measuring flange (12) and the speed measuring small shaft body (14).

3. The gerotor hydraulic motor with speed-sensing small shaft according to claim 2, characterized in that: The inner side wall of the front shell (2) is provided with a first bearing (3), and the output shaft (1) and the front shell (2) are rotatably connected through the first bearing (3).

4. The gerotor hydraulic motor with speed-sensing small shaft according to claim 2, characterized in that: The inner side wall of the speed measuring flange (12) is provided with a second bearing (11), and the speed measuring small shaft body (14) and the speed measuring flange (12) are rotatably connected through the second bearing (11).

5. The gerotor hydraulic motor with speed-sensing pinion of claim 2, wherein: The speed measuring flange (12) and the rear shell (15) are provided with a sealing element (10).

6. The gerotor hydraulic motor with speed-sensing small shaft according to claim 2, characterized in that: The outer side wall of the rear shell (15) is provided with an oil inlet hole.

7. The gerotor hydraulic motor with a speed measuring pinion according to claim 6, characterized in that: The cycloidal pair (5) is provided with a working cavity between the stator and the rotor.

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