CN214617303U - Detection apparatus for electronic hydraulic pump - Google Patents
Detection apparatus for electronic hydraulic pump Download PDFInfo
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- CN214617303U CN214617303U CN202120275038.5U CN202120275038U CN214617303U CN 214617303 U CN214617303 U CN 214617303U CN 202120275038 U CN202120275038 U CN 202120275038U CN 214617303 U CN214617303 U CN 214617303U
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Abstract
The utility model relates to a detection apparatus for electric hydraulic pump, detection apparatus include oil tank, first automatically controlled proportion overflow valve, first pressure sensor, first flow sensor and controller. A first valve port of the first electric control proportional overflow valve is communicated with a first oil port of the hydraulic pump body through a first pipeline, and a second valve port is connected with one end of the first pipeline; the first pressure sensor is connected to the first pipeline; the first flow sensor is connected to the first line. The controller is respectively connected with the data output ends of the first pressure sensor and the first flow sensor, and the controller can detect the electric hydraulic pump according to the first hydraulic data, the first flow data and the set standard hydraulic data and standard flow data. The system parameter under the condition of linear load change of the electric hydraulic pump can be efficiently detected, and the judgment precision of the electric hydraulic pump is improved.
Description
Technical Field
The utility model relates to a detection area of electric hydraulic pump, in particular to detection device of electric hydraulic pump under nonlinear load condition.
Background
An electric hydraulic pump is a hydraulic element that supplies pressurized fluid to a hydraulic transmission, and converts mechanical energy into pressure energy of the fluid by a motor. When the electric hydraulic pump works, the working parameters such as current, system pressure and system flow are related to the load, and the working parameters can change along with the change of the load.
The electric hydraulic pump needs to be detected before leaving a factory to ensure that the electric hydraulic pump meets the regulations, and the detection efficiency of the existing electric hydraulic pump is low, and the detection accuracy cannot be guaranteed.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a detection apparatus for an electric hydraulic pump to solve the technical defects existing in the prior art.
The utility model provides a detection device of an electric hydraulic pump, which comprises a motor and a hydraulic pump body, wherein the hydraulic pump body is provided with a first oil port and a second oil port; the detection device comprises an oil tank, a first electric control proportional overflow valve, a first pressure sensor, a first flow sensor and a controller, wherein the oil tank can store oil.
The first electric control proportional overflow valve is provided with a first valve port and a second valve port, the first valve port is communicated with a first oil port of the hydraulic pump body through a first pipeline, and the second valve port is connected with one end of a second pipeline; the other end of the second pipeline extends to the position below the oil liquid level in the oil tank.
The first pressure sensor is connected to the first pipeline and can acquire first hydraulic data in the first pipeline; the first flow sensor is connected to a first pipeline and is capable of acquiring first flow data in the first pipeline.
And the controller is respectively connected with the data output ends of the first pressure sensor and the first flow sensor, and can detect the electric hydraulic pump according to the first hydraulic data, the first flow data and the set target hydraulic data and target flow data.
The technical effects of the utility model are that: the load of the electric hydraulic pump is adjusted through the arranged first electric control proportional overflow valve. The electric hydraulic pump is operated under the simulated load, so that the system parameters corresponding to each load on the solid line load curve are obtained through detection by detecting the system parameters corresponding to the dotted line load.
The controller can judge whether the hydraulic pressure of the electric hydraulic pump under the current load is qualified or not according to the first hydraulic data and the target hydraulic data.
The utility model discloses not only can detect the system parameter under the full operating mode of electronic hydraulic pump (from empty load to overload), improve the precision that electronic hydraulic pump judged, realized detecting the system parameter under the nonlinear change condition of load of electronic hydraulic pump high-efficiently moreover.
Target hydraulic pressure data, target flow data and target decibel data can be called standard hydraulic pressure data, standard flow data and standard decibel data respectively, the utility model discloses with standard hydraulic pressure data, standard flow data and standard decibel data description in the following content.
Drawings
Fig. 1 is a schematic view of a detection device of an electric hydraulic pump according to an embodiment of the present invention;
FIG. 2 is a schematic of the non-linear variation of the load of the electrically-powered hydraulic pump over time;
fig. 3 is a schematic flow chart of a method for detecting an electric hydraulic pump according to an embodiment of the present invention;
FIG. 4a is a graphical illustration of pressure versus time after calibration of a standard electric hydraulic pump is complete;
FIG. 4b is a schematic of the flow rate over time after calibration of a standard electric hydraulic pump is complete;
fig. 4c is a graph of the two small graphs of fig. 4a and 4b after fitting.
FIG. 4d is a schematic diagram of the pressure and flow rate of the present invention after setting the tolerance band, respectively, as a function of time;
FIG. 5 is a schematic diagram of the simulated load curve of the present invention over time;
fig. 6 is a schematic flow chart of a method for detecting an electric hydraulic pump according to an embodiment of the present invention;
FIG. 7a is a graph illustrating standard current data over time after calibration of a standard electric hydraulic pump is completed;
FIG. 7b is a graph of standard decibel data versus time after calibration of a standard electric hydraulic pump is complete;
FIG. 7c is a schematic diagram of the standard electric hydraulic pump after calibration is completed and after fitting of standard current data, standard decibel data, standard pressure data, and standard flow data is performed;
fig. 8a is a graph showing the time variation of the standard pressure data after the time interval is set;
FIG. 8b is a graph of standard flow data versus time after a time interval has been set;
FIG. 8c is a graph of standard current data versus time after a set time interval;
FIG. 8d is a graph of standard noise data as a function of time after a set time interval.
Detailed Description
Example one
Fig. 1 shows a detection device of an electric hydraulic pump in the present embodiment, the electric hydraulic pump 10 includes a motor 11 and a hydraulic pump body 12, and the hydraulic pump body 12 has a first oil port and a second oil port; the detection device comprises a fuel tank 20, a first electronic control proportional overflow valve 30, a first pressure sensor 31, a first flow sensor 32 and a controller, wherein the fuel tank 20 can store oil. The tank 20 is located above the test level to ensure that there is no gas inside the hydraulic lines.
The first electrically-controlled proportional overflow valve 30 has a first valve port and a second valve port, the first valve port is communicated with a first oil port of the hydraulic pump body 12 through a first pipeline 51, and the second valve port is connected with one end of a second pipeline 52; the other end of the second line 52 extends below the level of the oil in the tank 20.
The first pressure sensor 31 is connected to the first pipeline 51, and can acquire first hydraulic data in the first pipeline 51; a first flow sensor 32 is connected to the first line 51, said first flow sensor being able to acquire first flow data in said first line 51.
A controller is connected to the data outputs of the first pressure sensor 31 and the first flow sensor 32, respectively, and is capable of detecting the electric hydraulic pump based on the first hydraulic data, the first flow data, and the set standard hydraulic data and the standard flow data.
Fig. 2 shows a schematic diagram of the non-linear change of the load of an electrically-driven hydraulic pump with time, which can be applied to a hydraulic component of an electric tailgate of an automobile. The utility model discloses be exactly to the detection of electric hydraulic pump under the random variation condition of load along with time in the working process.
It should be noted that, since the load of the electric hydraulic pump changes randomly with time, not only the system parameter detection efficiency of the electric hydraulic pump is low, but also the detection accuracy of the electric hydraulic pump is low when the electric hydraulic pump is detected under different loads.
Fig. 3 shows a flow chart of a detection method of an electric hydraulic pump, including steps S101 to S107.
S101: calibrating a standard electric hydraulic pump to obtain standard system parameters; the standard system parameters include standard hydraulic data and standard flow data.
The standard electric hydraulic pump can be understood as a qualified product, and standard system parameters are obtained by calibrating the standard electric hydraulic pump, namely, the standard system parameters corresponding to each load point in the working process of the standard electric hydraulic pump are obtained.
Fig. 4a is a schematic diagram of the pressure variation with time after the electric hydraulic pump is calibrated, and fig. 4b is a schematic diagram of the flow variation with time after the electric hydraulic pump is calibrated. Fig. 4c is a graph of the two small graphs of fig. 4a and 4b after fitting.
S102: and setting a pressure tolerance zone and a flow tolerance zone corresponding to the standard hydraulic data and the standard flow data respectively, and receiving the set pressure tolerance zone and the set flow tolerance zone by the controller.
I.e. after setting the tolerance of the standard hydraulic data and the tolerance of the standard flow data, the tolerance band is shown in fig. 4 d.
S103: and zeroing the first flow sensor and the first pressure sensor, and setting the first electric control proportional overflow valve to be fully opened.
S104: starting a motor to drive the electric hydraulic pump body to rotate forwards; the controller sends an opening degree reducing instruction to the first electronic control proportional overflow valve, and the opening degree of the first electronic control proportional overflow valve is gradually reduced from the maximum so that the load of the electric hydraulic pump under the positive rotation working condition is gradually increased.
The opening degree of the first electrically-controlled proportional relief valve is controlled by the controller to gradually decrease, so that the hydraulic pressure in the first pipeline 51 gradually increases, and the load of the electric hydraulic pump is increased accordingly.
S105: a controller receives first pressure data of the first pressure sensor and first flow data of the first flow sensor, the controller calculating a hydraulic pressure difference value of the first pressure data of the first pressure sensor and the standard hydraulic data at a same point in time.
S106: the controller judges whether the hydraulic pressure difference value of each time point under the positive rotation working condition is within a set pressure tolerance band, if so, the step S107 is executed; if not, the pressure of the electric hydraulic pump under the positive rotation working condition is unqualified.
After the motor is started, the hydraulic pump body is driven to rotate forwards, and the measured electric hydraulic pump is the system parameter corresponding to the load under the working condition of forward rotation.
S107: the controller calculates a flow difference value between the first flow data and the standard flow data at the same time point; the controller judges whether the flow difference value is within a set flow tolerance band, if so, the electric hydraulic pump is qualified under the positive rotation working condition; if not, the flow of the electric hydraulic pump under the positive rotation working condition is unqualified.
As shown in fig. 5, the load range a1 of the standard electric hydraulic pump is known, the utility model discloses an adjusting the aperture of first automatically controlled proportional relief valve, along with the aperture of first automatically controlled proportional relief valve reduces, then the hydraulic pressure in the first pipeline 51 increases gradually, so the load of electric hydraulic pump increases thereupon and forms the simulated load curve that the dotted line is shown in fig. 3, and the load range a1 of standard electric hydraulic pump is located the within range of simulated load curve.
The utility model discloses well arbitrary load point on the solid load curve all can find the same load on the simulation load curve, for example the load of electric hydraulic pump can follow 0 linear variation to maximum value M, and the load scope of the full operating mode of electric hydraulic pump work is located interval [0, M ]. The electric hydraulic pump is operated under the simulated load by arranging the first electric control proportional overflow valve, so that the system parameters corresponding to each load on the solid line load curve are obtained by detecting the system parameters corresponding to the dotted line load, namely detecting the system parameters corresponding to each load on the solid line load curve.
That is no matter how the load of waiting to detect the electronic hydraulic pump actually changes, the utility model discloses the aperture adjustment that sets up first automatically controlled proportional relief valve to make the load scope in the first pipeline 51 can include the load scope of standard electronic hydraulic pump.
The utility model discloses the effect of the automatically controlled proportional overflow valve of well setting is the load of adjusting the electronic hydraulic pump. The controller can judge whether the hydraulic pressure of the electric hydraulic pump under the current load is qualified or not according to the first hydraulic data and the standard hydraulic data, and similarly, the controller can judge whether the flow of the electric hydraulic pump under the current load is qualified or not according to the first flow data of the standard flow data.
The utility model discloses not only can detect the system parameter under the full operating mode of electronic hydraulic pump (from empty load to overload), improve the precision that electronic hydraulic pump judged, realized detecting the system parameter under the nonlinear change condition of load of electronic hydraulic pump high-efficiently moreover. The problems of low detection efficiency and low qualified judgment precision caused by large detection amount of the electric hydraulic pump under the condition of nonlinear load are solved skillfully.
Example two
On the basis of the first embodiment, the detection device of the electric hydraulic pump in this embodiment further includes a second electrically controlled proportional relief valve, a second pressure sensor, and a second flow sensor.
The second electrically-controlled proportional overflow valve 40 has a third port and a fourth port, the third port is communicated with the second port of the hydraulic pump body through a third pipeline 53, and the fourth port is connected with one end of a fourth pipeline 54; the other end of the fourth pipeline 54 extends to the position below the oil liquid level in the oil tank;
the second pressure sensor 41 is connected to the third pipeline 53, and can acquire second pressure data in the third pipeline 53;
the second flow sensor 42 is connected to the third pipeline 53, and can acquire second flow data in the third pipeline;
the controller is connected with the data output ends of the second pressure sensor and the second flow sensor respectively, and the controller can detect the electric hydraulic pump according to standard hydraulic data, standard flow data, second hydraulic data and second flow data.
Specifically, the following describes a detection method based on the electric hydraulic pump detection device in the present embodiment, and after S107, S108 to S112 are further included.
S108: and under the condition that the opening degree of the first electronic control proportional overflow valve is zero, the motor is closed, the controller corrects zero of the second flow sensor and the second pressure sensor, and controls the first electronic control proportional overflow valve and the second electronic control proportional overflow valve to be fully opened.
S109: starting a motor to drive the electric hydraulic pump body to reversely rotate; and the controller sends an opening degree reduction instruction to the second electronic control proportional overflow valve, and the opening degree of the second electronic control proportional overflow valve is gradually reduced from the maximum so as to gradually increase the load of the electric hydraulic pump under the reverse working condition.
S110: a controller receives second hydraulic data for the second pressure sensor and second flow data for the second flow sensor.
S111: the controller calculates a hydraulic pressure difference value between the second hydraulic pressure data and the standard hydraulic pressure data at the same time point, obtains a hydraulic pressure difference value at each time point under the reversal working condition of the electric hydraulic pump, judges whether the hydraulic pressure difference value at each time point under the reversal working condition is within a set pressure tolerance band, and if so, executes step S112; and if not, the pressure intensity of the electric hydraulic pump under the reverse working condition is unqualified.
S112: the controller calculates a flow difference value between the second flow data and the standard flow data at the same time point; the controller judges whether the flow difference value is within a set flow tolerance band, and if so, the electric hydraulic pump is qualified; and if not, the flow of the electric hydraulic pump under the reverse working condition is unqualified.
In this embodiment, under the condition that the opening of the first electronically-controlled proportional relief valve is zero, the controller directly controls the motor to be turned off, and at this time, the detection under the normal rotation working condition of the electrically-driven hydraulic pump is completed.
In this embodiment, the controller controls the first electronic control proportional overflow valve to open, and then controls the first electronic control proportional overflow valve and the second electronic control proportional overflow valve to open fully after the second flow sensor and the second pressure sensor are calibrated to zero, so that the flow data is prevented from existing during the detection of the forward rotation working condition, and the test accuracy of the reverse rotation working condition is prevented from being affected.
The controller controls the motor to start so as to drive the electric hydraulic pump body to reversely rotate; and the controller sends an opening degree reduction instruction to the second electronic control proportional overflow valve, and the opening degree of the second electronic control proportional overflow valve is gradually reduced from the maximum so as to gradually increase the load of the electric hydraulic pump under the reverse working condition.
This embodiment not only can realize the corotation operating mode and the reversal operating mode test of electronic hydraulic pump, and two kinds of operating modes can automatic switch and detect in succession moreover, improve the detection efficiency of electronic hydraulic pump by a wide margin.
The opening and closing time of the electric control proportional overflow valve is adjustable within 5-30S, and the process flow control is linear. The first pressure sensor 31 and the second pressure sensor 41 have a measuring range of 0-30Mpa and an accuracy of 0.5%. The first flow sensor 32 and the second pressure sensor 42 have a span of 0-10Ml/S with an accuracy of 0.5%. If the flow sensor is limited in accuracy, a sampling method of averaging 2-4S can be adopted.
The oil tank 20 can adopt a semi-closed mode to prevent oil from deteriorating due to water absorption of internal hydraulic oil, and the first, second, third and fourth pipelines can adopt stainless steel pipes with the inner diameter of 5-10 mm. The pipeline and the electric hydraulic pump adopt a standard quick connection interface, the pressure resistance is not lower than 35Mpa, and when the interface is disconnected, a one-way valve is adopted to automatically close.
EXAMPLE III
In addition to the first or second embodiment, the detection device of the electric hydraulic pump in this embodiment further includes a temperature sensor.
The temperature sensor is provided with a temperature acquisition end and a temperature data output end, the temperature acquisition end is in contact with or close to the motor of the electric hydraulic pump, the temperature data output end is connected with the controller, and the temperature acquisition end can input acquired motor temperature data to the controller. The controller can send a starting instruction or a closing instruction to the motor according to the input temperature data and a preset temperature threshold value.
Specifically, the following describes a detection method based on the electric hydraulic pump detection device in the present embodiment, and as shown in fig. 6, the detection method further includes steps S201 to S206.
S201: the controller receives a preset temperature threshold; the temperature threshold value comprises a pause temperature value and a resume temperature value, and the pause temperature value is greater than the resume temperature value.
The pause temperature value can be 80-90 ℃ and the resume temperature value can be 45-55 ℃. Preferably, the pause temperature value is 85 ℃ and the resume temperature value is 50 ℃.
S202: and the controller receives the current temperature value input by the temperature sensor in real time.
S203: under the condition that the current test of the electric hydraulic pump is finished, the controller judges whether the current temperature value exceeds a pause temperature value or not, if so, S204 is executed; if not, carrying out next test on the electric hydraulic pump; the controller sends a starting instruction to the motor to start the motor.
S204: the controller transmits a turn-off command to the motor to turn off the motor, stops the operation of the electric hydraulic pump, and performs step S205.
S205: the controller judges whether the current temperature value is lower than the recovery temperature value; if yes, go to step S207; if not, go to step S206.
S206: the controller receives the current temperature value input by the temperature sensor and executes step S205.
S207: and the controller sends a starting instruction to the motor to start the motor, and the electric hydraulic pump is tested next time.
During the durability experiment of the electric hydraulic pump, the electric hydraulic pump is detected for many times, and the detection times are once respectively for the forward rotation working condition and the reverse rotation working condition of the electric hydraulic pump.
In this embodiment, the controller receives the motor temperature collected by the temperature sensor in real time by setting a pause temperature value and a resume temperature value. And under the condition that the current test of the electric hydraulic pump is finished, the controller judges that the current temperature value is lower than the pause temperature value, and then the next test is carried out on the electric hydraulic pump, so that the efficiency of the durability test of the electric hydraulic pump is improved.
It is emphasized that the controller determines whether the current temperature value exceeds the pause temperature value only when the current test of the electric hydraulic pump is completed. Therefore, the temperature of the motor is prevented from exceeding the pause temperature value and directly stopping running, and the system parameters of the electric hydraulic pump detected at the time can be ensured to be saved.
And when the controller judges that the current temperature value exceeds the pause temperature value, stopping the motor from running, and when the controller judges that the temperature of the motor is lower than the recovery temperature value, sending a starting instruction to the motor to start the motor to carry out the next test on the electric hydraulic pump. The motor is prevented from running at high temperature for a long time, deviation from actual use working conditions in durability experiments is prevented, and system parameters obtained by detection of the electric hydraulic pump are guaranteed to have reference values.
Example four
In addition to the first embodiment or the second embodiment, the detection of the electric hydraulic pump in this embodiment further includes the current of the motor and the noise of the electric hydraulic pump. The detection environment of the electric hydraulic pump needs sound insulation.
The detection device of the electric hydraulic pump in the embodiment further comprises a noise meter. The noise meter has decibel collection end and decibel output, decibel collection end set up in electronic hydraulic pump side, the decibel output with the controller is connected, the noise meter can be with the decibel data input that detects extremely the controller. The controller can detect the electric hydraulic pump according to set standard decibel data and measured decibel data.
Specifically, the following describes a detection method based on the detection device of the electric hydraulic pump in the present embodiment, where the standard system parameters further include standard decibel data and standard current data; fig. 7a is a graph showing the standard current data after calibration as a function of time, and fig. 7b is a graph showing the standard decibel data after calibration as a function of time. Fig. 7c is a graph of the four small graphs of fig. 4a, 4b, 7a and 7b after fitting.
The electric hydraulic pump detection method further includes: and setting a current threshold corresponding to the standard current data, and receiving the set current threshold by the controller.
The controller records current data of the motor, calculates a current difference value between the current data and the standard current data at the same time point in the time interval, and judges whether the current difference value exceeds the current threshold value; if so, the current data of the electric hydraulic pump is qualified, and if not, the electric hydraulic pump is unqualified.
The electric hydraulic pump detection method further includes: and setting a decibel threshold corresponding to the standard decibel data, and receiving the set decibel threshold by the controller.
The controller receives decibel data acquired by the noise meter, calculates the decibel difference value between the decibel data at the same time point in the time interval and the standard decibel data, and judges whether the decibel difference value exceeds the decibel threshold value or not; if so, the noise of the electric hydraulic pump is qualified, and if not, the noise of the electric hydraulic pump is unqualified.
Through detecting electric current and noise to electronic hydraulic pump in this embodiment, electronic hydraulic pump just once can accomplish the compliance and detect, need not to carry out the detection of electric current and noise project alone, further improves electronic hydraulic pump's detection efficiency.
EXAMPLE five
The present embodiment is a method for detecting an electric hydraulic pump, including steps S301 to S307.
S301: calibrating a standard electric hydraulic pump to obtain standard system parameters; the standard system parameters include standard hydraulic data and standard flow data.
S3020: and receiving the set time interval by the controller according to the time interval corresponding to the working state of the standard electric hydraulic pump.
The time interval may be set to one, two or more according to the time when the electric hydraulic pump is in the operating state.
S302: and setting a pressure tolerance zone and a flow tolerance zone corresponding to the standard hydraulic data and the standard flow data respectively, and receiving the set pressure tolerance zone and the set flow tolerance zone by the controller.
For example, the time interval can be set to [10,20], fig. 8a is a graph of pressure versus time after the time interval is set, fig. 8b is a graph of flow versus time after the time interval is set, fig. 8c is a graph of current versus time after the time interval is set, and fig. 8d is a graph of noise versus time after the time interval is set.
S303: and zeroing the first flow sensor and the first pressure sensor, and setting the first electric control proportional overflow valve to be fully opened.
S304: starting a motor to drive the electric hydraulic pump body to rotate forwards; the controller sends an opening degree reducing instruction to the first electronic control proportional overflow valve, and the opening degree of the first electronic control proportional overflow valve is gradually reduced from the maximum so that the load of the electric hydraulic pump under the positive rotation working condition is gradually increased.
S305: and a controller receives first pressure data of the first pressure sensor and first flow data of the first flow sensor, calculates a hydraulic pressure difference value between the first pressure data and the standard hydraulic data at the same time point in the time interval, and acquires a hydraulic pressure difference value of the electric hydraulic pump at each time point in the time interval.
S306: the controller judges whether the hydraulic pressure difference value of each time point under the positive rotation working condition is within a set pressure tolerance band, if so, the step S307 is executed; if not, the pressure of the electric hydraulic pump under the positive rotation working condition is unqualified.
S307: the controller calculates a flow difference value between the first flow data and the standard flow data at the same time point in the time interval, judges whether the flow difference value is within a set flow tolerance band, and if so, the electric hydraulic pump is qualified under the positive rotation working condition; if not, the flow of the electric hydraulic pump under the positive rotation working condition is unqualified.
The difference between this embodiment and the first embodiment is that, according to the time interval corresponding to the working state of the standard electric hydraulic pump, that is, the time interval corresponding to the load when the electric hydraulic pump is actually in the working state, this embodiment additionally sets the time interval, so that the controller calculates the hydraulic pressure difference between the first pressure data and the standard hydraulic pressure data at the same time point in the time interval, and calculates the flow rate difference between the first flow rate data and the standard flow rate data at the same time point in the time interval.
And the system parameters of the electric hydraulic pump detected in the time interval are used as the basis, so that the detection precision of the electric hydraulic pump is improved, the qualification judgment accuracy of the electric hydraulic pump is ensured, and the processing amount of the controller on the detected data is reduced.
Claims (4)
1. The detection device of the electric hydraulic pump is characterized in that the electric hydraulic pump comprises a motor and a hydraulic pump body, wherein the hydraulic pump body is provided with a first oil port and a second oil port;
the detection device includes:
a tank capable of storing oil;
the first electric control proportional overflow valve is provided with a first valve port and a second valve port, the first valve port is communicated with a first oil port of the hydraulic pump body through a first pipeline, and the second valve port is connected with one end of a second pipeline; the other end of the second pipeline extends to the position below the liquid level of oil in the oil tank;
the system comprises a first pressure sensor, a second pressure sensor and a controller, wherein the first pressure sensor is connected to a first pipeline and can acquire first hydraulic data in the first pipeline;
the system comprises a first flow sensor, a second flow sensor and a control unit, wherein the first flow sensor is connected to a first pipeline and can acquire first flow data in the first pipeline;
and the controller is respectively connected with the data output ends of the first pressure sensor and the first flow sensor, and can detect the electric hydraulic pump according to the first hydraulic data, the first flow data and the set target hydraulic data and target flow data.
2. The detection apparatus of the electric hydraulic pump according to claim 1, further comprising:
the second electric control proportional overflow valve is provided with a third valve port and a fourth valve port, the third valve port is communicated with a second oil port of the hydraulic pump body through a third pipeline, and the fourth valve port is connected with one end of the third pipeline; the other end of the third pipeline extends to the position below the liquid level of oil in the oil tank;
the second pressure sensor is connected to the third pipeline and can acquire second pressure data in the third pipeline;
the second flow sensor is connected to the third pipeline and can acquire second flow data in the third pipeline;
the controller is respectively connected with the data output ends of the second pressure sensor and the second flow sensor, and the controller can detect the electric hydraulic pump according to the second hydraulic data, the second flow data, the set target hydraulic data and the set target flow data.
3. The detection apparatus of the electric hydraulic pump according to claim 1 or 2, further comprising:
the temperature sensor is provided with a temperature acquisition end and a temperature data output end, the temperature acquisition end is in contact with or close to the motor of the electric hydraulic pump, the temperature data output end is connected with the controller, and the temperature acquisition end can input acquired motor temperature data to the controller;
the controller can send a starting instruction or a closing instruction to the motor according to the input temperature data and a preset temperature threshold value.
4. The detecting device of the electric hydraulic pump according to claim 3, further comprising:
the noise meter is provided with a decibel acquisition end and a decibel output end, the decibel acquisition end is arranged beside the electric hydraulic pump, the decibel output end is connected with the controller, and the noise meter can input detected decibel data to the controller;
the controller can detect the electric hydraulic pump according to the set target decibel data and the measured decibel data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120275038.5U CN214617303U (en) | 2021-01-29 | 2021-01-29 | Detection apparatus for electronic hydraulic pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120275038.5U CN214617303U (en) | 2021-01-29 | 2021-01-29 | Detection apparatus for electronic hydraulic pump |
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