Cycloid hydraulic motor with speed sensor

Abstract

The utility model belongs to the technical field of hydraulic motors, and particularly relates to a cycloid hydraulic motor with a speed sensor. Comprising a rear shell and a motor assembly, a shell is fixedly installed on the rear shell and the motor assembly, a long linkage shaft is fixedly installed on the rear shell and the motor assembly, an output shaft is fixedly installed on the long linkage shaft, induction teeth are in threaded connection with the output shaft, and a front partition plate is arranged between the rear shell and the motor assembly and the shell. A speed sensor corresponding to the sensing teeth is connected to the front partition plate in a sliding mode, a nut is connected to the speed sensor in a threaded mode, and the nut is rotationally connected with the shell. The sensor is easy and convenient to install, electronic signal processing and amplification are integrated in the sensor shell, and maintenance is not needed; the speed sensing teeth are additionally arranged at the end of the output shaft, so that the output sensing teeth apply axial pre-tightening force to the bearing of the output shaft and sense the speed sensor at the same time, and the advantages of safety, reliability, precise control and the like in the use process of a user are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic motors, and in particular relates to a cycloid hydraulic motor with a speed sensor. Background Art

[0002] In the use of agricultural equipment, forestry equipment, mining equipment, reducer equipment and other equipment, it is necessary to accurately control the motor speed and reducer speed in real time. In the hydraulic system, the motor speed is changed by controlling the flow of motor hydraulic oil. Due to factors such as leakage, throttling, and efficiency problems in various links such as pumps, valves, oil pipes, and hydraulic motors in the hydraulic system, it is often impossible to accurately control the required ideal speed. This requires precise digital detection and strict control of the flow of the hydraulic system, and this is when the speed measuring motor is applied. Utility Model Content

[0003] In order to solve the problems existing in the background technology, the utility model provides a cycloid hydraulic motor with a speed sensor to solve the problem that the desired ideal speed cannot be accurately controlled in many cases.

[0004] The utility model provides a cycloid hydraulic motor with a speed sensor, comprising a rear shell and a motor assembly, wherein a shell is fixedly mounted on the rear shell and the motor assembly, a long linkage shaft is fixedly mounted on the rear shell and the motor assembly, an output shaft is fixedly mounted on the long linkage shaft, and a sensing tooth is threadedly connected to the output shaft. A front partition is provided between the rear shell and the motor assembly and the shell, a speed sensor is slidably connected to the corresponding sensing tooth on the front partition, a nut is threadedly connected to the speed sensor, and the nut is rotatably connected to the shell.

[0005] Furthermore, an oil inlet hole is provided on the rear shell and the motor assembly, and the oil inlet hole is communicated with the rear shell and the working chamber in the motor assembly.

[0006] Furthermore, a rear partition is provided on the rear shell and the motor assembly, a stator and rotor pair is provided on the rear partition, and the stator and rotor pair is fixedly connected to the front partition.

[0007] Furthermore, a bearing is fixedly installed in the housing corresponding to the output shaft, and the inner ring of the bearing is fixedly connected to the output shaft.

[0008] Beneficial effects of the utility model:

[0009] The speed of the utility model is measured by a sensor based on the Hall principle, and signal processing and amplification are carried out in the sensor housing. The robust design meets the requirements of electromagnetic compatibility, has a large frequency range, and is precisely adjusted. Compared with the corresponding passive motor, there is no restriction on the motor performance; the standard speed signal is easy to install, and the electronic signal processing and amplification are integrated in the sensor housing and do not require maintenance; by adding speed sensing teeth at the output shaft end, the output sensing teeth apply axial preload force to the bearing of the output shaft, and at the same time provide induction for the speed sensor, ensuring safety, reliability, and precise control during user use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural schematic diagram of a cycloid hydraulic motor with a speed sensor according to the present invention.

[0011] Figure 2 This is a schematic diagram of AA of a cycloid hydraulic motor with a speed sensor according to the present invention.

[0012] As shown in the figure:

[0013] 1. Rear shell and motor assembly, 2. Housing, 3. Long linkage shaft, 4. Output shaft, 5. Induction gear, 6. Front partition, 7. Speed sensor, 8. Nut, 9. Oil inlet hole, 10. Rear partition, 11. Stator and rotor pair, 12. Bearing. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] In the description of the utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0016] Please see all drawings for this manual:

[0017] A cycloid hydraulic motor with a speed sensor includes a rear housing and a motor assembly 1, a housing 2 being fixedly mounted on the rear housing and motor assembly 1, a long linkage shaft 3 being fixedly mounted on the rear housing and motor assembly 1, an output shaft 4 being fixedly mounted on the long linkage shaft 3, an induction tooth 5 being threadedly connected to the output shaft 4, a front baffle 6 being provided between the rear housing and motor assembly 1 and the housing 2, a speed sensor 7 being slidably connected to the front baffle 6 corresponding to the induction tooth 5, a nut 8 being threadedly connected to the speed sensor 7, and the nut 8 being rotatably connected to the housing 2;

[0018] It should be noted that the output electrical signal here is a standard voltage signal, which can be used to adjust the speed motor; the speed is measured by the sensor according to the Hall principle; signal processing and amplification are performed in the speed sensor 7, and the connection is set in the housing 2, for a series 713 plug or a plug with a 5-meter cable. The speed sensor 7 can also be equipped with a 2-meter-long data transmission cable; it meets the electromagnetic compatibility requirements of EN50081 and EN50082, has a large frequency range, and precise adjustment. Compared with the corresponding passive motor, there is no restriction on motor performance; the overall protection level is: IP 67; standard speed signal, easy installation, electronic signal processing and amplification are integrated in the sensor housing and do not require maintenance.

[0019] As a technical optimization solution of the present invention, an oil inlet hole 9 is provided on the rear housing and the motor assembly 1, and the oil inlet hole 9 is interconnected with the working chamber in the rear housing and the motor assembly 1;

[0020] It should be noted that the hydraulic oil is introduced into the rear housing and its motor assembly 1 through the oil inlet hole 9, and then enters the working chamber between the stator and rotor in the stator-rotor pair 11 through the compensation plate, the oil distribution plate, and the rear partition 10. Under the action of the oil pressure, the rotor is pressed toward one side of the low-pressure chamber and rotates along the inner teeth of the stator sleeve. The transmission of the rotor includes rotation and revolution.

[0021] As a technical optimization solution of the present invention, a rear partition 10 is provided on the rear shell and the motor assembly 1 , a stator and rotor pair 11 is provided on the rear partition 10 , and the stator and rotor pair 11 is fixedly connected to the front partition 6 .

[0022] As a technical optimization solution of the present invention, a bearing 12 is fixedly installed in the housing 2 corresponding to the output shaft 4 , and the inner ring of the bearing 12 is fixedly connected to the output shaft 4 .

[0023] Working principle:

[0024] The hydraulic oil is introduced into the rear housing and its motor assembly 1 through the oil inlet hole 9, and enters the working chamber between the stator and rotor in the stator-rotor pair 11 through the compensation plate, the oil distribution plate, and the rear partition 10. Under the action of the oil pressure, the rotor is pressed to one side of the low-pressure chamber and rotates along the inner teeth of the stator sleeve. The transmission of the rotor includes rotation and revolution, which is transmitted to the output shaft 4 through the long linkage shaft 3. At the same time, the output shaft 4 is connected to the induction tooth 5 through a thread, so that the output shaft 4 and the speed sensor 7 rotate synchronously. The mounting hole for the speed sensor 7 is processed on the front partition 6. The distance between the magnetic head of the speed sensor 7 and the induction tooth 5 is adjusted by adjusting the nut 8. The electrical signal is output through the change of magnetic induction, and the real-time motor output shaft speed can be displayed on the secondary instrument. The output speed of the motor can be controlled by flow regulation.

[0025] The above description of the present invention and its embodiments is non-limiting. The specific embodiments shown in the specific embodiments are only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without creatively designing a structure and embodiment similar to the technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A cycloid hydraulic motor with a speed sensor, comprising a rear housing and a motor assembly, characterized in that: A shell is fixedly mounted on the rear shell and the motor assembly, a long linkage shaft is fixedly mounted on the rear shell and the motor assembly, an output shaft is fixedly mounted on the long linkage shaft, a sensing tooth is threadedly connected to the output shaft, a front partition is provided between the rear shell and the motor assembly and the shell, a speed sensor is slidably connected to the corresponding sensing tooth on the front partition, a nut is threadedly connected to the speed sensor, and the nut is rotatably connected to the shell.

2. A cycloid hydraulic motor with a speed sensor according to claim 1, characterized in that: The rear shell and the motor assembly are provided with an oil inlet hole, and the oil inlet hole is communicated with the rear shell and the working chamber in the motor assembly.

3. The cycloid hydraulic motor with a speed sensor according to claim 1, characterized in that: A rear partition is provided on the rear shell and the motor assembly. A stator and rotor pair is provided on the rear partition. The stator and rotor pair is fixedly connected to the front partition.

4. The cycloid hydraulic motor with a speed sensor according to claim 1, characterized in that: A bearing is fixedly installed in the housing corresponding to the output shaft, and the inner ring of the bearing is fixedly connected to the output shaft.

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