CN114962506B - Measuring equipment for sliding resistance of friction plate - Google Patents
Measuring equipment for sliding resistance of friction plate Download PDFInfo
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- CN114962506B CN114962506B CN202110207771.8A CN202110207771A CN114962506B CN 114962506 B CN114962506 B CN 114962506B CN 202110207771 A CN202110207771 A CN 202110207771A CN 114962506 B CN114962506 B CN 114962506B
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- driver
- friction plate
- controller
- hydraulic cylinder
- hydraulic pump
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- 238000006073 displacement reaction Methods 0.000 claims description 35
- 230000006698 induction Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 20
- 238000005259 measurement Methods 0.000 description 9
- 230000008602 contraction Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The embodiment of the invention provides a measuring device for the sliding resistance of a friction plate, which comprises a controller, and a first driver, a second driver, a first pressure sensor and a second pressure sensor which are electrically connected with the controller; and controlling the first driver and the second driver to jointly drive the friction plate through the controller, and calculating and acquiring the sliding resistance of the friction plate according to the measured values of the first pressure sensor and the second pressure sensor. According to the measuring equipment provided by the embodiment of the invention, the sliding resistance of the friction plate can be measured, and the position of the lug with the problem of the friction plate can be directly determined according to the lugs corresponding to the values measured by the first pressure sensor and the second pressure sensor, so that the measuring efficiency is effectively improved, and the reason for abnormal sliding resistance of the friction plate can be rapidly determined.
Description
Technical Field
The invention relates to the technical field of automobile part measurement, in particular to a measuring device for sliding resistance of a friction plate.
Background
At present, a caliper commonly used on a passenger car is a floating caliper, and after a driver releases braking, a friction plate on the caliper cannot automatically return to the original position, and the friction plate is propped back to the original position mainly through the ground force generated by contact with the friction plate when a brake disc rotates, so that a gap is generated between the friction plate and the disc.
Because the above-mentioned characteristics of floating calliper, the sliding resistance of friction disc has apparent influence to friction disc and brake disc can break away from the contact, produces the disc clearance, if friction disc sliding resistance is too big, and the frictional disc is rotated when producing the earth's force with the friction disc and is insufficient to jack up, will appear dragging the too big problem of moment, makes vehicle oil consumption higher, fuel economy is poor.
After the problem of larger dragging torque of the brake, the reason for the problem needs to be quickly checked, if the dragging torque is larger because of abnormal sliding resistance of the friction plate, the sliding resistance of the friction plate needs to be quickly checked, and the sliding resistance of the lug on which side of the friction plate is larger is locked, so that the whole sliding resistance of the friction plate is larger.
In summary, in the prior art, in the measurement of the sliding resistance of the friction plate, it is not possible to directly determine whether the sliding resistance abnormality of the friction plate is caused by the lugs on which side, and thus the cause of the sliding resistance abnormality of the friction plate cannot be determined, and the measurement efficiency is low, and the final result cannot be directly obtained.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a device for measuring sliding resistance of a friction plate, which is used for solving the problems that in the prior art, in the measurement of the sliding resistance of the friction plate, the sliding resistance abnormality of the friction plate cannot be directly determined due to the lugs on which side, so that the cause of the sliding resistance abnormality of the friction plate cannot be determined, the measurement efficiency is low, and the final result cannot be directly obtained.
In order to solve the technical problems, the embodiment of the invention adopts the following technical scheme:
the embodiment of the invention provides a measuring device for the sliding resistance of a friction plate, which comprises a controller, and a first driver, a second driver, a first pressure sensor and a second pressure sensor which are electrically connected with the controller;
the first driver is connected with the first pressure sensor, the first driver is used for driving the left lug of the friction plate to move in the right lug direction, and the first pressure sensor is used for detecting acting force of the left lug on the first driver;
the second driver is connected with the second pressure sensor, the second driver is used for driving the right lug of the friction plate to move towards the left lug, and the second pressure sensor is used for detecting acting force of the right lug on the second driver;
the controller is used for controlling the first driver and the second driver to jointly drive the friction plate, and calculating and acquiring the sliding resistance of the friction plate according to the measured values of the first pressure sensor and the second pressure sensor.
Further, the first driver comprises a first displacement sensor, and the first displacement sensor is electrically connected with the controller and is used for measuring the distance of the left lug of the friction plate driven by the first driver;
the second driver comprises a second displacement sensor, and the second displacement sensor is electrically connected with the controller and is used for measuring the distance of the second driver for driving the right lug of the friction plate to move;
the controller is also used for calculating the difference between the value measured by the first displacement sensor and the value measured by the second displacement sensor to obtain a difference value;
comparing the absolute value of the difference with a threshold value, and adjusting the driving speed of the first driver and/or the second driver to the friction plate when the absolute value is larger than the threshold value;
and stopping the speed regulation of the first driver and/or the second driver when the absolute value is smaller than or equal to the threshold value.
Further, the first driver further includes a first switch; the first switch is electrically connected with the controller and is used for controlling the driving of the first driver according to a control signal of the controller;
the second driver further includes a second switch; the second switch is electrically connected with the controller and is used for controlling the driving of the second driver according to the control signal of the controller.
Further, the first driver further comprises a first hydraulic cylinder, a piston rod of which is connected with the left lug of the friction plate, and the first switch is connected with the first hydraulic cylinder;
the first pressure sensor is arranged on a piston rod of the first hydraulic cylinder and is contacted with the left support lug of the friction plate;
the first displacement sensor is arranged on the first hydraulic cylinder.
Further, the second driver further comprises a second hydraulic cylinder, a piston rod of which is connected with the right support lug of the friction plate, and the second switch is connected with the second hydraulic cylinder;
the second pressure sensor is arranged on a piston rod of the second hydraulic cylinder and is contacted with the right support lug of the friction plate;
the second displacement sensor is arranged on the second hydraulic cylinder.
Further, the first displacement sensor is a first magnetic induction coil arranged in the first hydraulic cylinder;
the second displacement sensor is a second magnetic induction coil arranged in the second hydraulic cylinder.
Further, the first switch comprises a first three-position four-way valve and a first hydraulic pump;
the first hydraulic pump is connected with the first three-position four-way valve, and the first hydraulic pump is electrically connected with the controller;
the first position of the first three-position four-way valve is used for enabling the first hydraulic pump to be communicated with a piston rod-free cavity of the first hydraulic cylinder;
the second position of the first three-position four-way valve is used for enabling the first hydraulic pump to be communicated with a piston rod cavity of the first hydraulic cylinder;
and the third position of the first three-position four-way valve is used for disconnecting the communication between the first hydraulic pump and the first hydraulic cylinder.
Further, the second switch comprises a second three-position four-way valve and a second hydraulic pump;
the second hydraulic pump is connected with the second three-position four-way valve, and the hydraulic pump is electrically connected with the controller;
the first position of the second three-position four-way valve is used for enabling the second hydraulic pump to be communicated with a piston rod-free cavity of the second hydraulic cylinder;
the second position of the second three-position four-way valve is used for enabling the second hydraulic pump to be communicated with a piston rod cavity of the second hydraulic cylinder;
and the third position of the second three-position four-way valve is used for disconnecting the communication between the second hydraulic pump and the second hydraulic cylinder.
Further, the first three-position four-way valve and the second three-position four-way valve are electrically connected with the controller;
the measuring device further comprises an oil tank, and the first hydraulic pump and the second hydraulic pump are both communicated with the oil tank.
Further, the oil tank comprises a first oil tank and a second oil tank;
the first hydraulic pump is communicated with the first oil tank, and the second hydraulic pump is communicated with the second oil tank.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a measuring device for the sliding resistance of a friction plate, which comprises a controller, and a first driver, a second driver, a first pressure sensor and a second pressure sensor which are electrically connected with the controller; and controlling the first driver and the second driver to jointly drive the friction plate through the controller, and calculating and acquiring the sliding resistance of the friction plate according to the measured values of the first pressure sensor and the second pressure sensor. According to the measuring equipment provided by the embodiment of the invention, the sliding resistance of the friction plate can be measured, and meanwhile, the position of the lug with the problem of the friction plate can be directly determined according to the lugs corresponding to the numerical value measured by the first pressure sensor and the numerical value measured by the second pressure sensor, so that the measuring efficiency is effectively improved, the reason for abnormal sliding resistance of the friction plate can be rapidly determined, and further, the problem that in the prior art, the reason for abnormal sliding resistance of the friction plate is caused by the lugs on the side which cannot be directly determined is solved, the reason for abnormal sliding resistance of the friction plate cannot be determined, the measuring efficiency is low, and a final result cannot be directly obtained.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of an apparatus for measuring sliding resistance of a friction plate according to an embodiment of the present invention.
Wherein:
1. a first pressure sensor; 2. a first displacement sensor; 3. a first hydraulic cylinder; 4. a first three-position four-way valve; 5. a first hydraulic pump; 6. a first oil tank; 7. a second pressure sensor; 8. a second displacement sensor; 10. a second three-position four-way valve; 10. a third diverter valve; 11. a second hydraulic pump; 12. a second oil tank; 13. a controller; 14. a friction plate; 141. a left support lug; 142. and a right support lug.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, as shown in fig. 1, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1, an embodiment of the present invention provides a measuring apparatus of a sliding resistance of a friction plate 14, the measuring apparatus including a controller 13, and a first driver, a second driver, a first pressure sensor 1, a second pressure sensor 7 electrically connected to the controller 13;
the first driver is connected with the first pressure sensor 1, the first driver is used for driving the left support lug 141 of the friction plate 14 to move towards the right support lug 142, and the first pressure sensor 1 is used for detecting acting force of the left support lug 141 on the first driver;
the second driver is connected with the second pressure sensor 7, the second driver is used for driving the right support lug 142 of the friction plate 14 to move towards the left support lug 141, and the second pressure sensor 7 is used for detecting the acting force of the right support lug 142 on the second driver;
the controller 13 is configured to control the first driver and the second driver to drive the friction plate 14 in common, and calculate and acquire the sliding resistance of the friction plate 14 based on the values measured by the first pressure sensor 1 and the second pressure sensor 7.
The first driver and the second driver act together with the friction plate 14 under the control of the controller 13, wherein the first driver drives the left lug 141 of the friction plate 14 to move towards the right lug 142, and the second driver drives the right lug 142 of the friction plate 14 to move towards the left lug 141 according to the principle that the forces act on each other, so that the first pressure sensor 1 measures the acting force of the left lug 141 on the first driver, the second pressure sensor 7 measures the acting force of the right lug 142 on the second driver, and the value measured by the first pressure sensor 1 and the value measured by the second pressure sensor 7 are added to obtain the sliding resistance of the friction plate 14, thereby effectively improving the measurement efficiency and rapidly determining the reason for the abnormal sliding resistance of the friction plate 14 when the abnormal judgment of the friction plate 14 is obtained and the lug position of the problem of the friction plate 14 is directly determined,
in addition, compared with the checking method that the locking problem can be caused by measuring the sliding resistance of the friction plate 14 and then measuring the two lug sizes of the friction plate 14 and the size of the brake caliper matched with the two lug sizes, the efficiency of the measuring device of the embodiment is improved by about 50% compared with the checking method in terms of the efficiency of checking the problem.
Wherein, in order to more accurately measure the sliding resistance of the friction plate 14, the acting force of the left support lug 141 on the first driver and the acting force of the right support lug 142 on the second driver:
the first driver comprises a first displacement sensor 2, wherein the first displacement sensor 2 is electrically connected with the controller 13 and is used for measuring the moving distance of the left lug 141 of the friction plate 14 driven by the first driver;
the second driver comprises a second displacement sensor 8, and the second displacement sensor 8 is electrically connected with the controller 13 and is used for measuring the distance of the second driver for driving the right lug 142 of the friction plate 14 to move;
the controller 13 is further configured to calculate a difference between the value measured by the first displacement sensor 2 and the value measured by the second displacement sensor 8, and obtain a difference;
the absolute value of the difference is compared to a threshold value,
stopping the adjustment of the speed of the first driver and/or the second driver when the absolute value is less than or equal to the threshold value;
when the absolute value is greater than the threshold value, the drive rate of the friction plate 14 by the first driver and/or the second driver is adjusted so that the absolute value is less than or equal to the threshold value.
Wherein the threshold value is preferably 0.5mm;
since the displacement of the left lug 141 driven by the first driver and the displacement of the right lug 142 driven by the second driver differ greatly when the absolute value is greater than the threshold value, it is necessary to adjust the driving rate of the friction plate 14 by the first driver and/or the second driver so that the absolute value is less than or equal to the threshold value. The problem of excessive errors in the measured forces of the left lug 141 on the first actuator and the measured forces of the right lug 142 on the second actuator due to excessive displacement differences of the left lug 141 and the right lug 142 of the friction plate 14 is avoided.
The manner of adjusting the driving speed of the first driver and/or the second driver to the friction plate 14 may be determined according to the positive and negative of the obtained difference, and when the obtained difference is positive, the speed of the first driver is slowed down or the speed of the second driver is increased, so that the displacement of the left support lug 141 driven by the first driver is similar to or equal to the displacement of the right support lug driven by the second driver, so that the left support lug 141 and the right support lug 142 can synchronously displace, and further accurate measurement of the value of the acting force of the left support lug 141 on the first driver and the acting force of the right support lug 142 on the second driver is achieved. Similarly, when the difference is a negative number, the speed of the second driver is slowed down or the speed of the first driver is increased.
Wherein the first driver further comprises a first switch and a first hydraulic cylinder 3, and the piston rod of the first hydraulic cylinder is connected with the left lug 141 of the friction plate 14;
the first switch is connected with the first hydraulic cylinder 3;
the first switch is electrically connected with the controller 13, and is used for controlling the driving of the first driver according to the control signal of the controller 13; that is, the first switch is used for controlling the expansion and contraction of the piston rod of the first hydraulic cylinder 3 according to the control signal of the controller 13
The first pressure sensor 1 is arranged on a piston rod of the first hydraulic cylinder 3 and is contacted with the left support lug 141 of the friction plate 14;
the first switch controls the expansion and contraction of the piston rod of the first hydraulic cylinder 3, and the first hydraulic cylinder 3 may be replaced by a cylinder or a motor assembly, which is connected to the left support lug 141 and drives the left support lug 141 to move.
The first pressure sensor 1 is arranged on a piston rod of the first hydraulic cylinder 3, when the piston rod drives the left support lug 141, the acting force of the left support lug 141 on the piston rod of the first hydraulic cylinder 3 is collected,
in this embodiment, the first hydraulic cylinder 3 is adopted to drive the left support lug 141 to move more stably, so that the measurement result is more accurate.
The second driver further comprises a second switch and a second hydraulic cylinder, the second switch is provided with a piston rod and is connected with the right supporting lug 142 of the friction plate 14, and the second switch is connected with the second hydraulic cylinder;
the second switch is electrically connected with the controller 13, and is used for controlling the driving of the second driver according to the control signal of the controller 13;
the second pressure sensor 7 is arranged on a piston rod of the second hydraulic cylinder and is contacted with the right support lug 142 of the friction plate 14;
similarly, the second switch controls the expansion and contraction of the piston rod of the second hydraulic cylinder, and the second hydraulic cylinder may be replaced by a cylinder or a motor assembly, which is connected to the left support lug 141 and drives the right support lug 142 to move.
The second pressure sensor 7 is arranged on a piston rod of the second hydraulic cylinder, when the piston rod drives the right support lug 142, the acting force of the support lug on the piston rod of the second hydraulic cylinder is collected,
in this embodiment, the second hydraulic cylinder is adopted to drive the left support lug 141 to move more stably, so that the measurement result is more accurate.
Wherein the first displacement sensor 2 is a first magnetic induction coil arranged in the first hydraulic cylinder 3;
when the piston rod of the first hydraulic cylinder 3 moves, the piston rod of the first hydraulic cylinder 3 cuts the magnetic induction line of the first magnetic induction coil, an electric signal is generated and transmitted to the controller 13, and the controller 13 converts the electric signal into displacement of the piston rod of the first hydraulic cylinder 3, namely, the movement distance of the first hydraulic cylinder 3 for driving the left support lug 141 to move.
The second displacement sensor 8 is a second magnetic induction coil provided in the second hydraulic cylinder.
Similarly, when the piston rod of the second hydraulic cylinder moves, the piston rod of the second hydraulic cylinder cuts the magnetic induction line of the second magnetic induction coil, an electric signal is generated and transmitted to the controller 13, and the controller 13 converts the electric signal into displacement of the piston rod of the second hydraulic cylinder, that is, the movement distance that the second hydraulic cylinder drives the right support lug 142 to move.
The first switch comprises a first three-position four-way valve 4 and a first hydraulic pump 5;
the first hydraulic pump 5 is connected with the first three-position four-way valve 4, and the first hydraulic pump 5 is electrically connected with the controller 13;
the first position of the first three-position four-way valve 4 is used for enabling the first hydraulic pump 5 to be communicated with a piston rod-free cavity of the first hydraulic cylinder 3;
the second position of the first three-position four-way valve 4 is used for enabling the first hydraulic pump 5 to be communicated with a piston rod cavity of the first hydraulic cylinder 3;
the third position of the first three-position four-way valve 4 is used for disconnecting the communication between the first hydraulic pump 5 and the first hydraulic cylinder 3.
Three working positions of the first three-position four-way valve 4 are a first position, a second position and a third position; the first three-position four-way valve 4 is adjusted to a corresponding working position according to different conditions, for example: when the first hydraulic rod is required to be controlled to extend, the first three-position four-way valve 4 is controlled to be placed in the first position, the first hydraulic pump 5 is used for controlling hydraulic oil to enter the piston rod-free cavity, and the oil inlet rate of the first hydraulic pump 5 is used for controlling the expansion rate of the piston rod of the first hydraulic cylinder 3. When the machine is not in operation, the first three-position four-way valve 4 can be placed in a third position, the first hydraulic cylinder 3 is disconnected from the first hydraulic pump 5, and the piston rod of the first hydraulic cylinder 3 is prevented from being manually moved during the machine halt.
The second switch comprises a second three-position four-way valve 10 and a second hydraulic pump 11;
the second hydraulic pump 11 is connected with the second three-position four-way valve 10, and the hydraulic pump is electrically connected with the controller 13;
the first position of the second three-position four-way valve 10 is used for enabling the second hydraulic pump 11 to be communicated with a piston rod-free cavity of the second hydraulic cylinder;
the second position of the second three-position four-way valve 10 is used for enabling the second hydraulic pump 11 to be communicated with a piston rod cavity of the second hydraulic cylinder;
the third position of the second three-position four-way valve 10 is used to disconnect the communication between the second hydraulic pump 11 and the second hydraulic cylinder.
Similarly, the second three-position four-way valve 10 has three working positions, namely a first position, a second position and a third position; the second three-position four-way valve 10 is adjusted to a corresponding working position according to different conditions, for example: when the second hydraulic rod is required to be controlled to extend, the second three-position four-way valve 10 is controlled to be placed in the first position, the hydraulic oil is controlled to enter the piston rod-free cavity through the second hydraulic pump 11, and the expansion and contraction rate of the piston rod of the second hydraulic cylinder is controlled through the oil inlet rate of the second hydraulic pump 11. When the machine is not in operation, the second three-position four-way valve 10 can be placed in the third position, the second hydraulic cylinder is disconnected from the second hydraulic pump 11, and the piston rod of the second hydraulic cylinder is prevented from being manually moved during the machine halt.
Wherein the controller 13 controls the expansion and contraction of the piston rod of the first hydraulic cylinder 3 and the piston rod of the second hydraulic cylinder for convenience;
the first three-position four-way valve 4 and the second three-position four-way valve 10 are electrically connected with the controller 13.
In addition, the measuring device further comprises an oil tank, and the first hydraulic pump 5 and the second hydraulic pump 11 are both communicated with the oil tank. The first hydraulic pump 5 and the second hydraulic pump 11 may share one oil tank, or the oil tank may include a first oil tank 6 and a second oil tank 12;
the first hydraulic pump 5 is in communication with the first oil tank 6, and the second hydraulic pump 11 is in communication with the second oil tank 12.
The controller 13 may be a PC host or a controller 13 such as a single chip microcomputer or a PLC controller 13, which can fulfill the above control processing requirements.
The measuring equipment provided by the embodiment has the advantages of simple structure, small number of elements, low cost and easiness in production and popularization, and all the elements can be purchased from the market to be mature and reliable products; moreover, the sliding resistance of the friction plate 14 can be accurately and efficiently measured, the abnormal sliding resistance of the friction plate 14 is determined due to the support lugs on which side, the degree of automation is high, the operation is simple, and the accuracy is high.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The measuring equipment is characterized by comprising a controller, and a first driver, a second driver, a first pressure sensor and a second pressure sensor which are electrically connected with the controller;
the first driver is connected with the first pressure sensor, the first driver is used for driving the left lug of the friction plate to move in the right lug direction, and the first pressure sensor is used for detecting acting force of the left lug on the first driver;
the second driver is connected with the second pressure sensor, the second driver is used for driving the right lug of the friction plate to move towards the left lug, and the second pressure sensor is used for detecting acting force of the right lug on the second driver;
the controller is used for controlling the first driver and the second driver to jointly drive the friction plate, and calculating and acquiring the sliding resistance of the friction plate according to the measured values of the first pressure sensor and the second pressure sensor;
the first driver comprises a first displacement sensor, and the first displacement sensor is electrically connected with the controller and is used for measuring the distance of the left lug of the friction plate driven by the first driver;
the second driver comprises a second displacement sensor, and the second displacement sensor is electrically connected with the controller and is used for measuring the distance of the second driver for driving the right lug of the friction plate to move;
the controller is also used for calculating the difference between the value measured by the first displacement sensor and the value measured by the second displacement sensor to obtain a difference value;
the absolute value of the difference is compared to a threshold value,
stopping the adjustment of the speed of the first driver and/or the second driver when the absolute value is less than or equal to the threshold value;
and when the absolute value is larger than the threshold value, adjusting the driving speed of the first driver and/or the second driver to the friction plate so that the absolute value is smaller than or equal to the threshold value.
2. The apparatus for measuring sliding resistance of friction plate according to claim 1, wherein,
the first driver further includes a first switch; the first switch is electrically connected with the controller and is used for controlling the driving of the first driver according to a control signal of the controller;
the second driver further includes a second switch; the second switch is electrically connected with the controller and is used for controlling the driving of the second driver according to the control signal of the controller.
3. The apparatus for measuring sliding resistance of friction plate according to claim 2, wherein,
the first driver further comprises a first hydraulic cylinder, a piston rod of which is connected with the left support lug of the friction plate, and the first switch is connected with the first hydraulic cylinder;
the first pressure sensor is arranged on a piston rod of the first hydraulic cylinder and is contacted with the left support lug of the friction plate.
4. A friction plate sliding resistance measuring apparatus according to claim 3, wherein,
the second driver further comprises a second hydraulic cylinder, a piston rod of which is connected with the right support lug of the friction plate, and the second switch is connected with the second hydraulic cylinder;
the second pressure sensor is arranged on a piston rod of the second hydraulic cylinder and is contacted with the right support lug of the friction plate.
5. The apparatus for measuring sliding resistance of friction plate according to claim 4, wherein,
the first displacement sensor is a first magnetic induction coil arranged in the first hydraulic cylinder;
the second displacement sensor is a second magnetic induction coil arranged in the second hydraulic cylinder.
6. The apparatus for measuring sliding resistance of a friction plate according to claim 4, wherein the first switch includes a first three-position four-way valve and a first hydraulic pump;
the first hydraulic pump is connected with the first three-position four-way valve, and the first hydraulic pump is electrically connected with the controller;
the first position of the first three-position four-way valve is used for enabling the first hydraulic pump to be communicated with a piston rod-free cavity of the first hydraulic cylinder;
the second position of the first three-position four-way valve is used for enabling the first hydraulic pump to be communicated with a piston rod cavity of the first hydraulic cylinder;
and the third position of the first three-position four-way valve is used for disconnecting the communication between the first hydraulic pump and the first hydraulic cylinder.
7. The apparatus for measuring sliding resistance of a friction plate according to claim 6, wherein the second switch includes a second three-position four-way valve and a second hydraulic pump;
the second hydraulic pump is connected with the second three-position four-way valve, and the hydraulic pump is electrically connected with the controller;
the first position of the second three-position four-way valve is used for enabling the second hydraulic pump to be communicated with a piston rod-free cavity of the second hydraulic cylinder;
the second position of the second three-position four-way valve is used for enabling the second hydraulic pump to be communicated with a piston rod cavity of the second hydraulic cylinder;
and the third position of the second three-position four-way valve is used for disconnecting the communication between the second hydraulic pump and the second hydraulic cylinder.
8. The apparatus for measuring sliding resistance of a friction plate according to claim 7, wherein the first three-position four-way valve and the second three-position four-way valve are electrically connected to the controller;
the measuring device further comprises an oil tank, and the first hydraulic pump and the second hydraulic pump are both communicated with the oil tank.
9. The apparatus for measuring sliding resistance of a friction plate according to claim 8, wherein the oil tank includes a first oil tank and a second oil tank;
the first hydraulic pump is communicated with the first oil tank, and the second hydraulic pump is communicated with the second oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110207771.8A CN114962506B (en) | 2021-02-24 | 2021-02-24 | Measuring equipment for sliding resistance of friction plate |
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