Portable silicone oil clutch testing tool

Abstract

The utility model discloses a portable silicone oil clutch testing tool which comprises a shell, a built-in direct-current power supply, a main power switch, a 12v / 24v voltage change-over switch, a PWM generator, an integrated circuit, a volt-ammeter, a connector and a tachometer are arranged in the shell, and the built-in direct-current power supply provides power for the whole testing tool. The 12v / 24v voltage change-over switch can control the input voltage of the test tool by adjusting the integrated circuit and control the duty ratio signal output by the test tool to the clutch by adjusting the PWM generator, the tachometer is used for feeding back the Hall rotating speed, and the volt-ammeter is used for displaying the voltage and the current. The device is convenient to use, small in size and easy to carry, the working efficiency of engineers and stationed personnel is improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a portable silicone oil clutch testing tool. Background Art

[0002] With the widespread application of silicone oil clutches with stepless speed control in the market, electronically controlled silicone oil clutches are gradually replacing temperature-controlled silicone oil clutches in the market. As a result, the number of faulty and problematic parts is also increasing. In order to more conveniently detect clutch performance, troubleshoot fault points, and judge faulty parts when there are no test conditions, the use of portable silicone oil clutch calibration testing tools is currently an effective method.

[0003] Since there are many types of electronically controlled silicone oil clutches, there are many occasions and situations where the clutch test tool is needed, but there is no corresponding silicone oil clutch test tool on the market. As a manufacturing company, assisting customers in troubleshooting cooling-related faults has always been an important part of business trips, and handheld test tools are the most indispensable tools for troubleshooting. As a result, employees are unable to judge the quality of silicone oil clutches on the spot, causing a lot of unnecessary trouble and increasing feedback cycles and costs. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides a portable silicone oil clutch testing tool, which mainly solves the problem of on-site product detection, allowing on-site staff to easily and quickly judge the state of the silicone oil clutch assembly, so that they can respond to the next stage of work as soon as possible, saving costs and time, and helping to improve customer satisfaction.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A portable silicone oil clutch testing tool comprises a shell, wherein a built-in DC power supply, a main power switch, a 12V / 24V voltage switching switch, a PWM pulse generator, an integrated circuit, a voltage and current meter, a connector, and a tachometer are arranged in the shell, wherein the built-in DC power supply provides power for the entire testing tool, the 12V / 24V voltage switching switch can control the input voltage of the testing tool by adjusting the integrated circuit, and control the duty cycle signal output by the testing tool to the clutch by adjusting the PWM pulse generator, the tachometer is used to feed back the Hall speed signal, and the voltage and current meter displays the voltage and current.

[0007] Preferably, the housing is provided with a first window, a second window and a third window, the first window is located above the second window, the tachometer screen is located at the first window, the PWM pulse generator screen is located at the second window, and the voltage and current meter screen is located at the third window.

[0008] Preferably, a fourth window for installing a main power switch and a fifth window for installing a 12v / 24v voltage switching switch are provided on one side of the third window on the housing.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] It is easy to use, small in size, and easy to carry, which improves the work efficiency of engineers and overseas personnel and reduces costs. The tester has adjustable duty cycle, voltage, and pulse frequency, and a wide test range, which can cover almost all types of electronically controlled silicone oil clutches on the market. It can replace the vehicle ECU to send signals to control the electronically controlled silicone oil clutch. It is simple to operate, convenient to test, and the test results are accurate and obvious. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 It is the circuit principle diagram of the utility model;

[0013] In the figure: 1- built-in DC power supply, 2- main power switch, 3- 12v / 24v voltage switching switch, 4- PWM pulse generator, 5- integrated circuit, 6- voltage and current meter, 7- five-core wire and connector, 8- tachometer, 9- shell. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1 and Figure 2 A portable silicone clutch test tool includes a housing 9, in which a built-in DC power supply 1, a main power switch 2, a 12v / 24v voltage switching switch 3, a PWM pulse generator 4, an integrated circuit 5, a voltage and current meter 6, a connector 7, and a tachometer 8 are arranged. The housing 9 is provided with a first window, a second window, and a third window. The first window is located above the second window, the screen of the tachometer 8 is located at the first window, the screen of the PWM pulse generator 4 is located at the second window, and the screen of the voltage and current meter 6 is located at the third window. A fourth window for installing the main power switch 2 and a fifth window for installing the 12v / 24v voltage switching switch 3 are arranged on one side of the housing 9 located at the third window.

[0016] The built-in DC power supply 1 provides power for the entire test tool. The 12v / 24v voltage switching switch 3 can control the input voltage of the test tool by adjusting the integrated circuit 5 to cope with different types of electronically controlled silicone oil clutches. The staff can control the duty cycle signal output by the test tool to the clutch by adjusting the PWM pulse generator 4. The electronically controlled silicone oil clutch connector assembly coil will respond to the electrical signal to further control the clutch action and feed back the Hall speed signal to the tachometer 8. The voltage and current meter 6 displays the voltage and current in this process. The whole process is simple and fast, and the results are accurate and obvious, which can help testers make quick judgments.

[0017] Use the connector 7 of the test tool as the input end and connect it directly to the silicone oil clutch connector. The silicone oil clutch can be tested without being loaded onto the test bench. After the connection, turn on the main power switch and adjust the PWM duty cycle and voltage as needed. The test tool will give feedback based on the clutch status, display the voltage, current and speed, achieve the test purpose, and help the staff make judgments.

[0018] Functions of this utility model:

[0019] 1. Determine whether the Hall signal of the electronically controlled clutch is damaged.

[0020] 2. Detect the resistance of the electronically controlled clutch coil.

[0021] 3. Determine the basic performance of the electronically controlled clutch (coupling speed, coupling time, separation speed, separation time)

[0022] 4. Determine the modulation characteristics of the electronically controlled clutch at different frequencies.

[0023] Test method:

[0024] 1. Disengagement speed and separation time test: After the engine is firmly stepped on, set the duty cycle of the tester to 100%, and press the on key of the PWM pulse generator to make the OUT symbol on the screen disappear. Wait for about 1 minute, and when the fan speed stabilizes, press the on key, and the screen will display the OUT symbol. At this time, start timing and observe the clutch separation speed and separation time.

[0025] 2. Coupling speed and coupling time test: After the separation speed is stable, press the on key, the OUT symbol on the screen disappears, and the timing starts at this time. Observe the clutch coupling speed and coupling time.

[0026] 3. Modulation test: Set the duty cycle of the tester to 100%, adjust the on key to make the screen display OUT, and after the separation speed stabilizes, reduce the duty cycle by 1% every 10s, and record the speed corresponding to different duty cycles.

[0027] 4. Hall signal diagnosis: If the tester displays output speed and the speed is reasonable in the coupled or separated state, it can be judged that the Hall signal is normal.

[0028] 5. Coil resistance diagnosis: Set the tester duty cycle to 100%, press the on key to display the OUT symbol on the screen, observe the voltage and current meter, and calculate the resistance through the current and voltage values.

[0029] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable silicone oil clutch testing tool, characterized in that: The invention comprises a housing (9), wherein a built-in DC power supply (1), a main power switch (2), a 12V / 24V voltage switching switch (3), a PWM pulse generator (4), an integrated circuit (5), a voltage and current meter (6), a connector (7), and a tachometer (8) are arranged in the housing (9), wherein the built-in DC power supply (1) provides power to the entire test tool, the 12V / 24V voltage switching switch (3) can control the input voltage by adjusting the integrated circuit (5), and control the duty cycle signal output by the test tool to the clutch by adjusting the PWM pulse generator (4), the tachometer (8) is used to feed back the Hall speed signal, and the voltage and current meter (6) is used to display the voltage and current.

2. A portable silicone oil clutch testing tool according to claim 1, characterized in that: The housing (9) is provided with a first window, a second window and a third window, the first window is located above the second window, the screen of the tachometer (8) is located at the first window, the screen of the PWM pulse generator (4) is located at the second window, and the screen of the voltage and current meter (6) is located at the third window.

3. A portable silicone oil clutch testing tool according to claim 2, characterized in that: A fourth window for installing a main power switch (2) and a fifth window for installing a 12V / 24V voltage switching switch (3) are provided on the housing (9) on one side of the third window.

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