Constant displacement motor with running health state monitoring function
Patent Information
- Application Number
- CN202420223886.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-30
AI Technical Summary
The existing motors installed on the entire vehicle cannot collect the motor's own operating parameters, resulting in the inability to judge whether the motor is operating normally. It must be judged by the performance of other components.
Designed a quantitative motor with a monitoring function of operating health state. By setting up speed sensors, temperature sensors, shell pressure sensors, vibration sensors, and oil port pressure sensors on the motor body, collect motor operating status information, and use the controller and and with the controller and and The host system CAN bus is connected to monitor the health state.
By setting a variety of sensors on the motor body, the operating status of the motor can be monitored in real time, including parameters such as speed, temperature, pressure, and vibration. Failure and damage.
Smart Images
Figure CN222423454U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, and in particular to a quantitative motor with a function of monitoring the running health status. Background Art
[0002] The existing motors installed on the vehicle are unable to collect the parameters of the motor's own operation, and thus cannot determine whether the motor is operating normally. The performance of other components must be used to reflect whether the motor is operating normally. Summary of the invention
[0003] In view of this, the utility model provides a quantitative motor with an operation health status monitoring function.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A quantitative motor with an operation health status monitoring function comprises a motor body, wherein the motor body comprises a shell, a motor rear cover and a motor main shaft, an inner cavity is formed in the shell, a plunger cylinder assembly is arranged in the inner cavity, a working oil port is provided on the motor rear cover, a speed sensor, a temperature sensor and a shell pressure sensor are provided on the shell, the speed sensor, the temperature sensor and the shell pressure sensor respectively detect the speed of the motor main shaft, the temperature of the oil in the inner cavity and the pressure of the oil in the inner cavity, a working oil port is provided on the motor rear cover, a vibration sensor and an oil port pressure sensor are provided on the motor rear cover, the vibration sensor and the oil port pressure sensor respectively detect the vibration of the plunger cylinder assembly and the pressure of the oil at the working oil port.
[0006] Preferably, the two ends of the working oil port are respectively connected to the inner cavity and the outside of the motor rear cover, the working oil port includes a working oil port A and a working oil port B, the oil port pressure sensor includes an A port pressure sensor and a B port pressure sensor corresponding to the working oil port A and the working oil port B, the A port pressure sensor and the B port pressure sensor are respectively arranged on both sides of the motor rear cover, and the A port pressure sensor and the B port pressure sensor respectively detect the oil pressure at the working oil port A and the working oil port B.
[0007] Preferably, a front bearing and a rear bearing are arranged between the motor main shaft and the housing, and the temperature sensor is arranged on a side of the housing close to the rear bearing.
[0008] Preferably, an oil drain port communicating with the inner cavity is provided on the housing, and the housing pressure sensor is provided on a side of the housing close to the oil drain port.
[0009] Preferably, the vibration sensor is arranged on a plane defined by a rotation centerline of the motor spindle and a rotation centerline of the plunger-cylinder assembly, and the centerline of the vibration sensor is perpendicular to the rotation centerline of the plunger-cylinder assembly.
[0010] Preferably, a controller is arranged outside the motor body, and the rotation speed sensor, temperature sensor, housing pressure sensor, vibration sensor and oil port pressure sensor are all communicatively connected with the controller.
[0011] The beneficial effect of the utility model is that by arranging a plurality of sensors on the motor body, the sensor signals are transmitted to the controller, and the controller is connected to the CAN bus of the host system, so as to realize the operation health status monitoring function of collecting the motor operation status information and outputting digital signals. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Attached Figure 1 It is a schematic diagram of the motor body structure;
[0014] Attached Figure 2 This is a cross-sectional view of the motor body. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] The utility model will be further described below in conjunction with the accompanying drawings of the specification.
[0017] The utility model provides the following technical solutions:
[0018] As attached Figure 1-2As shown, the utility model discloses a quantitative motor with a function of monitoring the running health status, including a motor body 1, the motor body 1 including a shell 2, a motor back cover 3 and a motor main shaft 4, an inner cavity 5 is formed in the shell 2, a plunger cylinder assembly 6 is arranged in the inner cavity 5, a working oil port 7 is provided on the motor back cover 3, a speed sensor 8, a temperature sensor 9 and a shell pressure sensor 10 are arranged on the shell 2, the speed sensor 8, the temperature sensor 9 and the shell pressure sensor 10 respectively detect the speed of the motor main shaft 4, the temperature of the oil in the inner cavity 5 and the pressure of the oil in the inner cavity 5, the working oil port 7 is provided on the motor back cover 3, a vibration sensor 11 and an oil port pressure sensor 12 are arranged on the motor back cover 3, the vibration sensor 11 and the oil port pressure sensor 12 respectively detect the vibration of the plunger cylinder assembly 6 and the pressure of the oil at the working oil port 7. Specifically, in this design, the speed sensor 8, the temperature sensor 9, the oil port pressure sensor 12, the vibration sensor 11 and the shell pressure sensor 10 are respectively fixed to the motor back cover 3 or the shell 2 by threaded connection. The speed sensor 8 monitors the speed of the motor spindle 4 in real time; the temperature sensor 9 monitors the temperature of the oil in the inner cavity 5 of the housing 2 in real time; the vibration sensor 11 monitors the vibration of the motor itself due to changes in speed, displacement, and load in real time; the housing pressure sensor 10 monitors the pressure of the oil in the housing 2 in real time. By arranging a number of sensors on the motor body 1, the sensor signals are transmitted to the controller, and the controller is connected to the CAN bus of the host system, so as to realize the operation health status monitoring function of collecting motor operation status information and outputting digital signals.
[0019] Further, the two ends of the working oil port 7 are connected to the inner cavity 5 and the outside of the motor rear cover 3 respectively, the working oil port 7 includes a working oil port A port 13 and a working oil port B port 14, the oil port pressure sensor 12 includes an A port pressure sensor 15 and a B port pressure sensor 16 corresponding to the working oil port A port 13 and the working oil port B port 14, the A port pressure sensor 15 and the B port pressure sensor 16 are respectively arranged on both sides of the motor rear cover, and the A port pressure sensor 15 and the B port pressure sensor 16 respectively detect the oil pressure at the working oil port A port 13 and the working oil port B port 14. Specifically, in this embodiment, the A port pressure sensor 15 and the B port pressure sensor 16 respectively monitor the oil pressure in and out of the working oil port 7A and the working oil port 7B in real time when the motor is in working state.
[0020] Furthermore, a front bearing 17 and a rear bearing 18 are arranged between the motor main shaft 4 and the housing 2, and the temperature sensor 9 is arranged on the side of the housing 2 close to the rear bearing 18. The temperature sensor 9 can monitor the temperature of the motor main shaft 4 bearing in real time. The temperature sensor 9 is arranged and installed on the housing 2 close to the rear bearing 18. The front bearing 17 and the rear bearing 18 are extremely important parts for the inclined axis hydraulic pump or motor. Under the condition of poor operation or severe load, a large amount of heat will be rapidly generated at the bearing. Under extreme conditions, the bearing will sinter and the motor main shaft 4 will be stuck. Therefore, the temperature sensor 9 is arranged at this position to monitor the oil temperature at the bearing in real time, and effective warning can be given before a failure occurs.
[0021] Furthermore, the housing 2 is provided with an oil drain port 19 connected to the inner cavity 5, and the housing pressure sensor 10 is provided on the side of the housing 2 close to the oil drain port 19. The housing pressure sensor 10 monitors the pressure of the oil in the housing cavity 2 in real time. Under different working conditions of the motor, wear of internal parts or other abnormal conditions, the leakage of the plunger cylinder assembly 6 and the distribution plate will be different. The housing pressure sensor 10 is arranged and installed on the housing 2 close to the oil drain port 19 of the housing 2. The hydraulic oil in the housing 2 fills the inner cavity 5 of the housing 2, so that the housing pressure sensor 10 can monitor the pressure of the inner cavity 5 of the housing 2 in real time, and can effectively warn before a fault occurs.
[0022] Furthermore, the vibration sensor 11 is arranged on a plane determined by the rotation center line of the motor spindle 4 and the rotation center line of the plunger-cylinder assembly 6. The center line of the vibration sensor is perpendicular to the rotation center line of the plunger-cylinder assembly 6, so that the X, Y, and Z three-axis corresponding vibration conditions of the plunger-cylinder assembly 6 can be monitored when the plunger-cylinder assembly 6 rotates, and timely warnings can be given in case of abnormalities or failures.
[0023] Furthermore, a controller (not shown) is disposed outside the motor body 1, and the rotation speed sensor 8, the temperature sensor 9, the housing pressure sensor 10, the vibration sensor 11 and the oil port pressure sensor 12 are all communicatively connected to the controller.
[0024] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A quantitative motor with a function of monitoring the running health status, comprising a motor body, the motor body comprising a housing, a motor rear cover and a motor spindle, an inner cavity is formed in the housing, a plunger cylinder assembly is arranged in the inner cavity, and a working oil port is provided on the motor rear cover, characterized in that: A speed sensor, a temperature sensor and a housing pressure sensor are arranged on the housing, and the speed sensor, the temperature sensor and the housing pressure sensor respectively detect the speed of the motor spindle, the temperature of the oil in the inner cavity and the pressure of the oil in the inner cavity. A working oil port is opened on the motor rear cover, and a vibration sensor and an oil port pressure sensor are arranged on the motor rear cover, and the vibration sensor and the oil port pressure sensor respectively detect the vibration of the plunger cylinder assembly and the pressure of the oil at the working oil port.
2. The fixed displacement motor with running health status monitoring function according to claim 1, characterized in that: The two ends of the working oil port are respectively connected to the inner cavity and the outside of the motor rear cover, the working oil port includes a working oil port A and a working oil port B, the oil port pressure sensor includes an A port pressure sensor and a B port pressure sensor corresponding to the working oil port A and the working oil port B, the A port pressure sensor and the B port pressure sensor are respectively arranged on both sides of the motor rear cover, and the A port pressure sensor and the B port pressure sensor respectively detect the oil pressure at the working oil port A and the working oil port B.
3. The quantitative motor with running health status monitoring function according to claim 1, characterized in that: A front bearing and a rear bearing are arranged between the motor main shaft and the housing, and the temperature sensor is arranged on a side of the housing close to the rear bearing.
4. The quantitative motor with running health status monitoring function according to claim 1, characterized in that: The shell is provided with an oil drain port communicating with the inner cavity, and the shell pressure sensor is arranged on a side of the shell close to the oil drain port.
5. The quantitative motor with running health status monitoring function according to claim 1, characterized in that: The vibration sensor is arranged on a plane defined by the rotation center line of the motor spindle and the rotation center line of the plunger cylinder assembly, and the center line of the vibration sensor is perpendicular to the rotation center line of the plunger cylinder assembly.
6. The fixed displacement motor with running health status monitoring function according to claim 1, characterized in that: A controller is arranged outside the motor body, and the rotation speed sensor, temperature sensor, housing pressure sensor, vibration sensor and oil port pressure sensor are all connected to the controller for communication.