Interface friction force and friction electric signal synchronous measuring device

Abstract

The utility model relates to the field of force and electricity measuring technology, in particular to an interface friction force and friction electric signal synchronous measuring device which comprises a linear driver used for fixing a sample below, an optical lever is suspended above the linear driver, and the top end of the optical lever is fixed through a fixer. The bottom end of the optical lever is provided with a tractor for fixing a sample above the optical lever, the laser transmitter is used for transmitting laser to the optical lever, the laser receiver is used for receiving the laser reflected by the optical lever, and an electrometer is connected between the sample above the optical lever and the sample below the optical lever through a wire. The measuring device with the optical lever is used for replacing a traditional force sensor, synchronous and high-precision measurement of friction force and friction current between a solid-solid sample or a solid-liquid sample can be achieved, and the problem that an existing experimental device is low in friction force and friction current measurement precision is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of force and electricity measurement technologies, and in particular to a device for synchronously measuring interfacial friction force and triboelectric signals. Background Art

[0002] Interfacial friction force and interfacial charge transfer amount are two important parameters of a friction interface. Achieving synchronous and high-precision measurement of these two parameters is an important topic in the current tribology research field.

[0003] Existing friction force measurements generally rely on traditional force sensors. Although they can achieve measurements between solid-solid samples, the measurement accuracy is generally not high and the charge transfer amount cannot be measured simultaneously, thus unable to accurately obtain experimental data. Summary of the Utility Model

[0004] To solve the problems in the above-mentioned existing technologies, the utility model provides a device for synchronously measuring interfacial friction force and triboelectric signals.

[0005] The device for synchronously measuring interfacial friction force and triboelectric signals provided by the utility model adopts the following technical solutions:

[0006] A device for synchronously measuring interfacial friction force and triboelectric signals includes a linear actuator for fixing the sample below. A light lever is suspended above the linear actuator, the top of the light lever is fixed by a fixator, and a traction device for fixing the sample above is installed at the bottom of the light lever. It also includes a laser emitter for emitting laser to the light lever and a laser receiver for receiving the laser reflected by the light lever. An electrometer is connected between the sample above and the sample below through a wire.

[0007] By adopting the above technical solutions, using a measuring device with a light lever to replace the traditional force sensor can achieve synchronous and high-precision measurement of the friction force and frictional current between solid-solid samples or solid-liquid samples, effectively solving the problem of low measurement accuracy of the current experimental device for friction force and frictional current.

[0008] Optionally, the linear actuator is selected as a linear motor, an electric push rod or a cylinder.

[0009] By adopting the above technical solutions, the corresponding linear motion device can be selected according to the actual situation to achieve the experimental purpose.

[0010] Optionally, the traction device is a clamp or a capillary tube.

[0011] By adopting the above technical solutions, the clamp can fix the solid sample, and the capillary tube can fix the liquid sample.

[0012] In summary, the utility model includes at least one of the following beneficial technical effects:

[0013] By using a measuring device with an optical lever to replace the traditional force sensor, synchronous and high-precision measurement of the frictional force and frictional current between solid-solid samples or solid-liquid samples can be achieved, effectively solving the problem of low measurement accuracy of the frictional force and frictional current in the current experimental device.

[0014] The fixture can fix the solid sample, and the capillary can fix the liquid sample. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the synchronous measurement device for interfacial frictional force and frictional electrical signal according to an embodiment of the present invention.

[0016] Figure 2 is the front view of the synchronous measurement device for interfacial frictional force and frictional electrical signal according to an embodiment of the present invention.

[0017] Description of the reference numerals: 1, optical platform; 2, linear driver; 3, optical lever; 4, fixator; 5, tractor; 6, laser emitter; 7, laser receiver; 8, electrometer. Detailed Description of the Embodiment

[0018] The following will Figure 1 - attach Figure 2 be further described in detail with reference to the present invention.

[0019] An embodiment of the present invention discloses a synchronous measurement device for interfacial frictional force and frictional electrical signal. Referring to Figure 1 and Figure 2 , the synchronous measurement device for interfacial frictional force and frictional electrical signal includes an optical platform 1, on the top surface of which a linear driver 2 is installed, and the sample below is fixed on the top surface of the linear driver 2. The linear driver 2 in this embodiment is a linear motor. In other embodiments, the linear driver 2 can also be selected from structures such as an electric push rod or a cylinder that can achieve linear movement.

[0020] Referring to Figure 1 and Figure 2 , an optical lever 3 is vertically suspended above the linear driver 2. The top end of the optical lever 3 is fixed by a fixator 4, and a tractor 5 is installed at the bottom end of the optical lever 3 for fixing the sample above. When measuring the frictional force between solid-solid samples, the tractor 5 is selected as a fixture; when measuring the frictional force between solid-liquid samples, the tractor 5 is a capillary.

[0021] Referring to Figure 1 and Figure 2, the device further includes a laser emitter 6, a laser receiver 7, and an electrometer 8. The laser emitted by the laser emitter 6 enters the laser receiver 7 after being reflected by the optical lever 3. The electrometer 8 is connected to the two samples through wires respectively, and thus the current between the two samples, i.e., the triboelectric signal, can be measured.

[0022] The implementation principle of the interface friction force and triboelectric signal synchronous measurement device according to the embodiment of the present utility model is as follows: The linear driver 2 makes a linear motion, drives the sample below to move and generate mutual friction with the sample above. The sample above is subjected to the friction force, causing the optical lever 3 to bend, the laser path to deflect, and the position of the reflected light spot on the laser receiver 7 to shift. According to the position of the light spot on the surface of the laser receiver 7, the geometric structure of the optical path, and the material mechanics performance of the optical lever 3, the friction force between the two samples can be calculated. Through the design of the geometric structure of the optical path, high-precision measurement of the friction force can be achieved. At the same time, the electrometer 8 is used to measure the current between the upper sample and the lower sample, i.e., the triboelectric signal. This device can achieve synchronous and high-precision measurement of the friction force and triboelectric current, and can also achieve measurement of solid-solid samples or solid-liquid samples.

[0023] The above are all the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A device for synchronously measuring interface friction force and triboelectric signal, characterized in that: The invention comprises a linear actuator (2) for fixing a sample below, an optical lever (3) is suspended above the linear actuator (2), the top of the optical lever (3) is fixed by a fixer (4), a tractor (5) for fixing the sample above is installed at the bottom of the optical lever (3), a laser transmitter (6) for emitting laser light to the optical lever (3) and a laser receiver (7) for receiving laser light reflected by the optical lever (3), and an electrometer (8) is connected between the sample above and the sample below via a wire.

2. The device for synchronously measuring interface friction force and triboelectric signal according to claim 1, characterized in that: The linear drive (2) is selected as a linear motor, an electric push rod or a pneumatic cylinder.

3. The device for synchronously measuring interface friction force and triboelectric signal according to claim 1, characterized in that: The tractor (5) is a clamp or a capillary tube.

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