Inner curve hydraulic motor rotating speed detection structure

Abstract

The utility model relates to a rotating speed detection structure of an inner curve hydraulic motor. The rotating speed detection structure comprises a hydraulic motor shell, a transmission shaft arranged in the hydraulic motor shell and a rotor connected with the transmission shaft in a matched mode. A rotating speed sensor is installed on the hydraulic motor shell, the rotating speed sensor is fixedly connected to the hydraulic motor shell through a screw and a nut, the rotating speed sensor is inserted into the hydraulic motor shell and corresponds to the rotor, and the rotating speed sensor is connected with an external electric control component so as to display detection data. The structure is compact, and the rotating speed and the rotating angle of the hydraulic motor can be monitored in real time, so that the performance parameters of the hydraulic motor under different stations are obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulics, and particularly relates to a speed detection structure for an internal curve hydraulic motor. This detection structure can be widely applied to hydraulic motors or hydraulic pumps. Background Art

[0002] During the use of hydraulic construction machinery, phenomena such as overspeed often occur, which may lead to failures in the hydraulic system, and at the same time, the performance parameters of the motor at different angles cannot be detected in real time. Therefore, technicians in this field have developed a variety of detection devices that can detect the rotational speed and rotational position of the motor in real time to monitor the performance of the motor at different positions. For example, CN220323343U discloses "a speed detection structure for a hydraulic motor", which includes a box body. The inner bottom surface of the box body is fixedly connected with a placement table, and the top surface of the placement table is placed with a motor to be tested. A clamping mechanism is arranged inside the box body. The output end of the motor to be tested is sleeved with a gear. Two vertical plates are fixedly connected to the inner top surface of the box body, and a threaded rod is rotatably connected between the vertical plates. An active block one is threadedly connected to the threaded rod, and an electric push rod is fixedly installed on the bottom surface of the active block one. The motor to be tested can be clamped through the clamping mechanism. By rotating the threaded rod, the active block one is driven to move, so as to adjust the position of the speed sensor, and then to adapt to the position of the gear at the output end of different motors to be tested. The installation steps of the motor are simple, and the height and position of the speed sensor can be conveniently adjusted, which is beneficial to quickly carry out speed detection, thus meeting the actual requirements. The technical solution disclosed in this patent document is a beneficial attempt in the technical field. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a speed detection structure for an internal curve hydraulic motor, which has a compact structure and can monitor the rotational speed and rotational angle of the hydraulic motor in real time, so as to obtain the performance parameters of the hydraulic motor at different working positions.

[0004] A speed detection structure for an internal curve hydraulic motor described in the utility model includes a hydraulic motor housing, a transmission shaft arranged in the hydraulic motor housing, and a rotor cooperatively connected with the transmission shaft; a speed sensor is installed on the hydraulic motor housing, and the speed sensor is fixedly connected to the hydraulic motor housing through screws and nuts. The speed sensor is inserted into the hydraulic motor housing and corresponds to the rotor. The speed sensor is connected to an external electronic control component to display detection data. The speed sensor is arranged on the hydraulic motor housing, which does not increase the external dimension of the hydraulic motor and has a high degree of integration; the distance between the speed sensor and the rotor is modified by adjusting the screwing depth of the screw.

[0005] Further, a first oil hole and a second oil hole are provided on the outer side of the hydraulic motor housing, and an annular groove is provided on the inner side. The rotational speed sensor is inserted into the annular groove from the outside of the hydraulic motor housing, and its probe corresponds to the edge of the rotor.

[0006] Further, a plurality of induction holes are equidistantly provided on the circumference of the edge of the rotor. The probe of the rotational speed sensor corresponds to the induction holes 31 on the circumference of the edge of the rotor, and transmits the detected signal to an external electronic control component.

[0007] The present utility model has the following advantages compared with the prior art:

[0008] Since a plurality of induction holes are equidistantly provided on the circumference of the edge of the rotor, and monitoring holes are uniformly provided on its monitored surface, the rotational speed sensor obtains the magnitude of the rotor speed and the rotation angle by monitoring the induction holes on the rotor.

[0009] Since the rotational speed sensor is installed in the annular groove in the hydraulic motor housing, while meeting the design requirements, it does not increase the external dimensions of the internal curve hydraulic motor.

[0010] Since the rotational speed sensor is fixed by screws, the depth of the screws screwed in can be adjusted to change the distance between the probe of the rotational speed sensor and the detected surface, making its application range wider. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is Figure 1 an enlarged view of part A of

[0013] Figure 3 is Figure 1 a partial cross-sectional view of

[0014] Figure 4 is a schematic structural diagram of the rotor.

[0015] In the figure (technical features represented by the marks):

[0016] 1 - hydraulic motor housing, 11 - first oil hole, 12 - second oil hole, 13 - annular groove;

[0017] 2 - transmission shaft;

[0018] 3 - rotor, 31 - induction hole;

[0019] 4 - rotational speed sensor;

[0020] 5 - screw;

[0021] 6 - nut. Detailed implementation mode

[0022] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings.

[0023] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A speed detection structure for an internal curve hydraulic motor shown in the figure, including a hydraulic motor housing 1, a transmission shaft 2 arranged in the hydraulic motor housing 1, and a rotor 3 connected to the transmission shaft 2 in a matching manner; a speed sensor 4 is installed on the hydraulic motor housing 1, and the speed sensor 4 is fixedly connected to the hydraulic motor housing 1 through a screw 5 and a nut 6. The speed sensor 4 is inserted into the hydraulic motor housing 1 and corresponds to the rotor 3. The speed sensor 4 is connected to an external electronic control component to display the detection data. The speed sensor is arranged on the hydraulic motor housing, without increasing the external dimensions of the hydraulic motor, and has a high degree of integration; the distance between the speed sensor and the rotor can be modified by adjusting the screwing depth of the screw.

[0024] A first oil hole 11 and a second oil hole 12 are arranged on the outside of the hydraulic motor housing 1, and an annular groove 13 is arranged on the inside. The speed sensor 4 is inserted into the annular groove 13 from the outside of the hydraulic motor housing 1, and its probe corresponds to the edge of the rotor 3.

[0025] A number of induction holes 31 are equidistantly arranged on the circumference of the edge of the rotor 3. The probe of the speed sensor 4 and the induction holes 31 on the circumference of the edge of the rotor 3 transmit the detected signal to the external electronic control component. By detecting the change of the spatial position of the rotor, the speed and direction of the corresponding motor can be directly measured, and the spatial position of the rotor can be accurately detected, which is convenient for detecting the performance of the internal curve low-speed motor at different positions;

[0026] The working principle of the present utility model is as follows: When hydraulic oil is introduced into the first oil hole 11 or the second oil hole 12 of the hydraulic motor housing 1, the rotor 3 rotates under the action of the high-pressure oil, thereby driving the transmission shaft 2 to rotate; the speed sensor 4 is driven to a specified position by the screw 5 through thread rotation and fixed by the nut 6, so as to detect the rotation speed and rotation angle of the rotor 3; since a number of induction holes 31 are equidistantly arranged on the circumference of the edge of the rotor 3, the speed sensor 4 can detect the rotation angle and rotation speed of the rotor 3; according to the angle detected by the speed sensor 4, the performance parameters of the internal curve hydraulic motor at this time are corresponding, so as to analyze the output torque, pressure and other parameters of the internal curve motor under different working conditions.

Claims

1. A speed detection structure for an inner curve hydraulic motor, comprising a hydraulic motor housing (1), a transmission shaft (2) arranged in the hydraulic motor housing (1), and a rotor (3) connected to the transmission shaft (2), wherein: A rotation speed sensor (4) is installed on the hydraulic motor housing (1). The rotation speed sensor (4) is fixedly connected to the hydraulic motor housing (1) via screws (5) and nuts (6). The rotation speed sensor (4) is inserted into the hydraulic motor housing (1) to correspond to the rotor (3). The rotation speed sensor (4) is connected to an external electronic control component to display detection data.

2. The inner curve hydraulic motor speed detection structure according to claim 1 is characterized in that: The hydraulic motor housing (1) is provided with a first oil hole (11) and a second oil hole (12) on the outside and an annular groove (13) on the inside. The rotation speed sensor (4) is inserted into the annular groove (13) from the outside of the hydraulic motor housing (1), and its probe corresponds to the edge of the rotor (3).

3. The inner curve hydraulic motor speed detection structure according to claim 1 or 2 is characterized in that: A plurality of sensing holes (31) are provided at equal distances on the circumference of the edge of the rotor (3), and the probe of the rotation speed sensor (4) corresponds to the sensing holes (31) on the circumference of the edge of the rotor (3), and transmits the detected signals to an external electric control component.

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