CN111677661A - Fatigue durability test system for automobile auxiliary vacuum pump - Google Patents
Fatigue durability test system for automobile auxiliary vacuum pump Download PDFInfo
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- CN111677661A CN111677661A CN202010518541.9A CN202010518541A CN111677661A CN 111677661 A CN111677661 A CN 111677661A CN 202010518541 A CN202010518541 A CN 202010518541A CN 111677661 A CN111677661 A CN 111677661A
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- vacuum pump
- temperature
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- temperature box
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a fatigue endurance test system for an automobile auxiliary vacuum pump, which comprises: the temperature box can be used for placing at least one vacuum pump to be tested; the controller is connected with the temperature box, can adjust the temperature in the temperature box and is also connected with the vacuum pump; the vacuum tank is positioned outside the temperature box and is connected with the vacuum pump in the temperature box in a matching way; the pressure adjusting assembly is arranged on the vacuum tank and is connected with the controller; the temperature detection assembly is positioned in the temperature box and is connected with the controller. The invention can truly simulate the environment state of the actual vehicle body when in use, and improves the verification accuracy of the durability of the vacuum pump; the temperature emitted by the vacuum pump when the vacuum pump works at different environmental temperatures can be known in real time, so that the heat dissipation effect of the vacuum pump can be known in real time; the vacuum pump testing device can test a plurality of vacuum pumps simultaneously, and improves testing efficiency.
Description
Technical Field
The invention relates to an automobile auxiliary vacuum pump, in particular to a fatigue durability test system for the automobile auxiliary vacuum pump.
Background
In the prior art, many automobiles are equipped with auxiliary electric vacuum pumps to generate vacuum for on-board brake systems and equipment, and the vacuum pumps need to be tested for some of their performance when in use, thereby improving safety.
At present, most vacuum pumps are generally tested under the working condition of no load and no environment on a test bench, so that some endurance test information of the vacuum pumps is obtained, the test mode only provides the maximum working times and the working life, and does not provide the attenuation information of the performance of the vacuum pumps along with the increase of the working times, but the attenuation information of the performance of the vacuum pumps along with the increase of the working times is very important, and the data support can be provided for the diagnosis of related parts of brake vacuum and the driving safety of a whole vehicle.
At present, a vacuum pump fatigue endurance testing system is very simple and easy, and has the following problems:
(1) during testing, the environment state of the actual vehicle body in operation cannot be truly simulated, so that the true and reliable durability of the auxiliary vacuum pump cannot be verified;
(2) the self heating load of the vacuum pump during working cannot be intuitively known;
(3) only one device corresponds to one or two products;
(4) the working time of the vacuum pump cannot be effectively switched in real time according to different environments;
(5) the current curve of the vacuum pump in the running state can not be directly collected;
(6) the abrasion loss of the vacuum pump after operation cannot be observed visually.
Disclosure of Invention
The invention aims to solve the problems, and provides a fatigue durability test system for an automobile auxiliary vacuum pump.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an automotive auxiliary vacuum pump fatigue endurance testing system, the testing system comprising:
the temperature box can be used for placing at least one vacuum pump to be tested;
the controller is connected with the temperature box, can adjust the temperature in the temperature box and is also connected with the vacuum pump;
the vacuum tank is positioned outside the temperature box and is connected with the vacuum pump in the temperature box in a matching way;
the pressure adjusting assembly is arranged on the vacuum tank and is connected with the controller;
and the temperature detection assembly is positioned in the temperature box and is connected with the controller.
In a preferred embodiment of the invention, the controller is connected with the temperature box control in a communication mode.
In a preferred embodiment of the invention, an air inlet of the vacuum pump is connected with the vacuum tank through a temperature-resistant rubber tube, and an air outlet of the vacuum pump is communicated with the outside of the temperature box through the temperature-resistant rubber tube.
In a preferred embodiment of the present invention, the pressure regulating assembly includes a pressure sensor and a solenoid valve, which are respectively connected to the controller.
In a preferred embodiment of the invention, the test system further comprises at least one-way valve arranged on the line between the vacuum tank and the vacuum pump.
In a preferred embodiment of the present invention, the temperature detecting assembly includes a first temperature sensor disposed in the temperature chamber and communicatively connected to the controller.
In a preferred embodiment of the present invention, the temperature detecting assembly further comprises at least one second temperature sensor, and the second temperature sensor is disposed on the vacuum pump and is connected with the controller in a communication manner.
In a preferred embodiment of the invention, the test system further comprises a dust collection box which is positioned outside the temperature box and is connected with the temperature-resistant rubber pipe on the air outlet of the vacuum pump.
In a preferred embodiment of the present invention, the test system further comprises at least one current sensor, and the current sensor is disposed on the vacuum pump and is connected with the controller in a communication manner.
The invention has the beneficial effects that:
(1) the environment state of the actual vehicle body during operation can be truly simulated, and the verification accuracy of the durability of the vacuum pump is improved;
(2) the temperature emitted by the vacuum pump when the vacuum pump works at different environmental temperatures can be known in real time, so that the heat dissipation effect of the vacuum pump can be known in real time;
(3) a plurality of vacuum pumps can be tested simultaneously, so that the testing efficiency is improved;
(4) the working time of the vacuum pump can be effectively switched in real time according to different environments, and the accuracy of a test result is further improved;
(5) the current curve of the vacuum pump in the running state can be directly collected, so that the problem analysis can be carried out on the vacuum pump at the later stage, and the accuracy of the test result is further improved;
(6) the abrasion loss of the vacuum pump during operation can be known in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a control diagram of the present invention.
Reference numerals: 100. a temperature box; 200. a controller; 300. a vacuum tank; 400. a vacuum pump; 510. a pressure sensor; 520. an electromagnetic valve; 530. a one-way valve; 610. a first temperature sensor; 620. a second temperature sensor; 700. a current sensor; 800. and a dust collection box.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
Referring to fig. 1 and 2, the fatigue endurance testing system for the auxiliary vacuum pump of the automobile provided by the invention comprises a temperature box 100, a controller 200, a vacuum tank 300, a pressure regulating assembly and a temperature detecting assembly.
The temperature box 100 may have at least one vacuum pump 400 to be tested placed therein, which may adjust the temperature therein, so that different operating temperatures may be simulated for the vacuum pump 400.
The temperature box 100 is a conventional one, and may include a sealed box body, and a heating device is disposed on the box body, so that the temperature in the box body can be controlled by controlling the heating device.
The controller 200 is in control connection with the temperature box 100, specifically is connected with the heating device of the temperature box 100, and is also in control connection with the vacuum pump 400 placed in the temperature box 100, and can control the temperature in the temperature box 100 and control the vacuum pump 400 in the temperature box 100 to work, so that the vacuum pump 400 is controlled to work in different temperature environments, the working time of the vacuum pump 400 can be effectively switched in time according to different environments, and the accuracy of a test result is further improved.
The controller 200 may be a single chip with a PLC test interface.
A plurality of connection channels may be provided on the controller 200, and each connection channel may be connected to at least three vacuum pumps 400 through a line, so that only one controller 200 may control the plurality of vacuum pumps 400 in the temperature chamber 100 to operate simultaneously, thereby improving efficiency.
The connection mode between the controller 200 and the temperature box 100 can be controlled and connected by adopting a communication mode, so that the connection lines can be reduced, and the convenience is improved.
The communication mode may be WIFI, 4G, 5G, or the like, and may be determined according to actual requirements.
And a vacuum tank 300 connected to an inlet of the vacuum pump 400 in the temperature chamber 100 through a pipe to supply air to the vacuum pump 400.
The air inlet of the vacuum pump 400 is specifically connected with the vacuum tank 300 through the temperature-resistant rubber tube 410, the air outlet of the vacuum pump 400 is specifically communicated with the outside of the temperature box 100 through the temperature-resistant rubber tube 410, so that the air sucked or discharged during the operation of the vacuum pump 400 is the normal-temperature air outside the temperature box 100, and the test accuracy is improved.
And the pressure adjusting assembly is arranged on the vacuum tank 300, is connected with the controller 200, and is used for detecting the air pressure inside the vacuum tank 300 and sending the detected air pressure value to the controller 200, and the controller 200 correspondingly controls the working state of the vacuum pump 400 and correspondingly adjusts the air pressure of the vacuum tank 300 according to the air pressure value.
The pressure regulating assembly may specifically include a pressure sensor 510 and a solenoid valve 520, the pressure sensor 510 is disposed inside the vacuum tank 300, the solenoid valve 520 is specifically disposed at an inlet and an outlet of the vacuum tank 300, and the pressure sensor 510 and the solenoid valve 520 are respectively connected to the controller 200.
After the pressure sensor 510 transmits the detected air pressure value of the vacuum tank 300 to the controller 200, the controller 200 may obtain the real-time air pressure inside the vacuum tank 300 according to the received air pressure value, thereby correspondingly controlling the start/stop and the operating time of the vacuum pump 400, controlling the communication state between the vacuum tank 300 and the vacuum pump 400 through the solenoid valve 520, and adjusting the air pressure inside the vacuum tank 300 through the solenoid valve 520.
In addition, the pressure adjustment assembly further includes at least one check valve 530, each check valve 530 is correspondingly disposed on a pipeline between the vacuum tank 300 and one of the vacuum pumps 400 and connected to the controller 200, and the check valve 530 is used for returning air to the vacuum tank 300, so as to prevent reverse rotation caused by suck-back of the vacuum pump 400 due to a negative pressure state after the operation of the vacuum pump 400.
When the check valve 530 operates to realize air return of the vacuum tank 300, specifically, a pressure value may be set in the controller 200, when the air pressure value sent by the pressure sensor 510 is smaller than a set value, the controller 200 opens the check valve 530 to realize air return of the vacuum tank 300, and when the air pressure value sent by the pressure sensor 510 is equal to or greater than the set value, the controller 200 closes the check valve 530 to stop air return, and opens the solenoid valve 520 to maintain the vacuum pressure in the vacuum tank 300.
And a temperature sensing assembly disposed within the temperature chamber 100 and connected to the controller 200.
The temperature sensing assembly may specifically include a first temperature sensor 610 and at least a second temperature sensor 620.
Each second temperature sensor 620 is correspondingly arranged on one vacuum pump 400 and is also connected with the controller 200 in a communication mode, and the second temperature sensors 620 are used for sensing the temperature of the vacuum pump 400 in real time and sending the sensed temperature value to the controller 200.
Because the vacuum pump 400 works to generate temperature load, the second temperature sensor 620 is arranged on each vacuum pump 400, the working temperature of each vacuum pump 400 can be visually collected, the controller 200 can automatically generate the temperature change curve (rising or falling) when the vacuum pump 400 works in different time periods according to the received temperature value, and thus, the heat dissipation effect of the vacuum pump 400 can be reflected by reading the temperature emitted by the vacuum pump 400 in different environmental temperatures in real time, so that the working state of the vacuum pump 400 can be known, if the problem occurs, and the test accuracy of the vacuum pump 400 can be further improved.
In addition, this application still includes at least one current sensor 700, every current sensor 700 corresponds and sets up on a vacuum pump 400, current sensor 700 also specifically adopts communication mode to be connected with controller 200, current sensor 700 is used for real-time induction vacuum pump 400 during operation current data to send the current data who senses to controller 200, controller 200 stores the current data who receives and generates the current change curve, like this through carrying out real-time supervision to the operating current of vacuum pump 400, can be for the follow-up more data to the test of vacuum pump 400, can further improve test accuracy.
Moreover, this application still includes a dust collecting box 800, and dust collecting box 800 is located temperature box 100 outsidely, and is connected with the temperature resistant rubber tube on the gas outlet of each vacuum pump 400, and vacuum pump 400 is giving vent to anger when, if vacuum pump 400 produced wearing and tearing, its wearing and tearing thing can be discharged into dust collecting box 800 along with the gas in, just can directly learn the degree of wear of vacuum pump 400 through the weight that detects the interior wearing and tearing thing of dust collecting box 800, and is very convenient.
For the detection of the weight of the abraded matter in the dust collection box 800, the abraded matter in the dust collection box 800 can be uniformly put into the weighing device to be measured.
In addition, in order to improve the detection efficiency, a weight sensor may be disposed in the dust collection box 800, and the weight sensor is connected to the controller 200, and senses the weight of the abraded objects in the dust collection box 800 in real time through the weight sensor, and sends the measured weight value to the controller 200.
The following is a specific working process of the present application:
firstly, the controller 200 is in communication connection with the temperature box 100, and the temperature in the temperature box 100 is adjusted to a corresponding test temperature;
then respectively putting the vacuum pumps 400 to be tested into the temperature boxes 100, and then communicating the vacuum pumps 400 with the vacuum tanks 300;
then the controller 200 adjusts the start-stop time of the vacuum pump 400 according to the air pressure collected by the pressure adjusting component in the vacuum tank 300, and returns air to the vacuum tank 300 according to the actual situation;
after the test is completed, the controller 200 records the operation time of each vacuum pump 400 and the number of whole cycles.
In addition, during testing, the plc test interface on the controller 200 can confirm that the vacuum pump 400 is suspended for 25%, 50%, 75% and 100% of the whole test period, and the vacuum pump 400 is taken out from the temperature box 100 for other performance tests, so that the test precision can be further improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A fatigue durability test system for an automotive auxiliary vacuum pump, the test system comprising:
a temperature box (100), wherein at least one vacuum pump (400) to be tested can be placed in the temperature box (100);
the controller (200), the controller (200) is connected with the temperature box (100), can adjust the temperature in the temperature box (100), and the controller (200) is also connected with the vacuum pump (400) in a control mode;
the vacuum tank (300) is positioned outside the temperature box (100) and is in fit connection with a vacuum pump (400) in the temperature box (100);
a pressure regulating assembly disposed on the vacuum tank (300) and connected with the controller (200);
the temperature detection assembly is positioned in the temperature box (100) and is connected with the controller (200).
2. The fatigue durability testing system of the auxiliary vacuum pump of the automobile as claimed in claim 1, wherein the controller (200) is in control connection with the temperature box (100) through communication.
3. The fatigue durability test system of the auxiliary vacuum pump of the automobile as claimed in claim 1, wherein the air inlet of the vacuum pump (400) is connected with the vacuum tank (300) through a temperature-resistant rubber hose, and the air outlet of the vacuum pump (400) is communicated with the outside of the temperature box (100) through a temperature-resistant rubber hose.
4. The fatigue durability testing system of claim 1, wherein the pressure regulating assembly comprises a pressure sensor (510) and a solenoid valve (520), and the pressure sensor (510) and the solenoid valve (520) are respectively connected with the controller (200).
5. The fatigue durability test system of an auxiliary vacuum pump for an automobile of claim 1, further comprising at least one check valve (530), wherein the check valve (530) is disposed on a pipeline between the vacuum tank (300) and the vacuum pump (400).
6. The fatigue durability test system of claim 2, wherein the temperature detection assembly comprises a first temperature sensor (610), and the first temperature sensor (610) is disposed in the temperature box (100) and is connected to the controller (200) in a communication manner.
7. The fatigue durability testing system of claim 6, wherein the temperature detecting assembly further comprises at least one second temperature sensor (620), and the second temperature sensor (620) is disposed on the vacuum pump (400) and is communicatively connected to the controller (200).
8. The fatigue durability test system of an auxiliary vacuum pump for an automobile according to claim 3, further comprising a dust collection box (800), wherein the dust collection box (800) is located outside the temperature box (100) and is connected with a temperature-resistant rubber hose on the air outlet of the vacuum pump (400).
9. The fatigue endurance testing system for auxiliary vacuum pump of automobile according to claim 1, further comprising at least one current sensor (700), wherein the current sensor (700) is disposed on the vacuum pump (400) and is communicatively connected to the controller (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518541.9A CN111677661A (en) | 2020-06-09 | 2020-06-09 | Fatigue durability test system for automobile auxiliary vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518541.9A CN111677661A (en) | 2020-06-09 | 2020-06-09 | Fatigue durability test system for automobile auxiliary vacuum pump |
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| Publication Number | Publication Date |
|---|---|
| CN111677661A true CN111677661A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010518541.9A Pending CN111677661A (en) | 2020-06-09 | 2020-06-09 | Fatigue durability test system for automobile auxiliary vacuum pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252359A (en) * | 2021-05-14 | 2021-08-13 | 宝能(广州)汽车研究院有限公司 | Equipment test system and method |
-
2020
- 2020-06-09 CN CN202010518541.9A patent/CN111677661A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252359A (en) * | 2021-05-14 | 2021-08-13 | 宝能(广州)汽车研究院有限公司 | Equipment test system and method |
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