Friction testing device

Abstract

The utility model particularly relates to a friction testing device which comprises a testing table, a translation plate arranged above the testing table, the testing table controlling the translation plate to move, a control screen arranged on the front side of the testing table, clamping mechanisms arranged on two sides above the translation plate, a tension measuring device arranged on one side of the testing table, and a measuring piece assembled and connected above the translation plate. The measuring piece comprises two rollers, an objective table is arranged above the rollers, a right-angle-shaped connecting shaft is assembled and connected between the objective table and the rollers, the two ends of the rollers are rotationally connected with the connecting shaft, a limiting mechanism is arranged between the rollers and the connecting shaft, and a material fixing assembly is arranged at the end of each roller; the device can measure the coefficient of rolling friction force and sliding friction force, is simple in structure, and can fix materials with different thicknesses, thereby achieving the measurement of different materials.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of friction measuring instrument, specifically relates to a friction testing device. BACKGROUND

[0002] The measurement of the friction coefficient of an object is usually based on the two-force balance condition, when the object moves at a constant speed in a horizontal plane, the size of the pulling force is equal to the size of the sliding friction force, and the friction coefficient is usually measured by a friction testing device, which is a device for measuring the friction coefficient between objects, and the device usually has a movable test platform and a fixed test surface; the material to be measured is placed on the test platform, a certain pressure is applied to make the material contact with the test surface, then the test platform is moved, and the instrument automatically measures the sliding friction force and calculates the sliding friction coefficient according to the pressure and the contact area and other parameters.

[0003] The existing friction testing device can usually only test the sliding friction coefficient and cannot measure the rolling friction coefficient. UTILITY MODEL CONTENT

[0004] In view of the problems in the above background technology, the utility model aims to provide a friction testing device to solve the problems in the above background technology.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] A friction testing device, comprising a test table, a translation plate is arranged above the test table, the test table controls the movement of the translation plate, a control screen is arranged on the front side of the test table, clamping mechanisms are arranged on the upper sides of the translation plate, a tension measuring device is arranged on one side of the test table, a measuring piece is assembled and connected above the translation plate, the measuring piece comprises two rollers, a sample stage is arranged above the rollers, a right-angle connecting shaft is assembled and connected between the sample stage and the rollers, the two ends of the rollers are rotationally connected with the connecting shaft, a limiting mechanism is arranged between the rollers and the connecting shaft, and a material fixing assembly is arranged on the end of the roller.

[0007] Further limited, the clamping mechanism comprises a screw rod, a clamping plate is arranged on the upper side of the translation plate and passes through the screw rod, and a nut is arranged on the upper side of the clamping plate and is threadedly connected with the screw rod.

[0008] Further limited, the lower side of the clamping plate is fixedly connected with a rubber plate, and recessed planes are uniformly arranged on the lower side of the rubber plate.

[0009] Further limited, the tension measuring device includes the installation platform fixedly connected with the test platform, the middle part of the installation platform is equipped with the tension measuring meter, the end of the tension measuring meter is equipped with the first hook, one side of the object table is equipped with the second hook which is located on the same line with the first hook.

[0010] Further limited, the material fixing assembly includes the rotating ring rotatably connected with the connecting shaft, opposite sides of the rotating ring are fixedly connected with the roller, and the remaining two sides of the rotating ring are assembled and connected with the elastic positioning piece between the roller.

[0011] Further limited, the limiting mechanism includes the limiting block fixedly connected on both sides of the end of the roller and provided with a pin hole, the shaft part of the connecting shaft is provided with a through hole located on the same line with the pin hole, and the pin hole and the through hole are provided with a limiting pin.

[0012] Further limited, the elastic positioning piece includes the positioning block matched with the inner side of the roller, and the positioning block is fixedly connected with the spring between the rotating ring.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] The utility model discloses a kind of material sliding friction coefficient and rolling friction coefficient, by limiting mechanism, when the roller and connecting shaft synchronous rotation, when the translation plate moves relative to the roller, the roller does not rotate, when the limitation of limiting mechanism is released, when the translation plate moves relative to the roller, the roller rotates.

[0015] The utility model discloses a kind of material sliding friction coefficient and rolling friction coefficient, by limiting mechanism, when the roller and connecting shaft synchronous rotation, when the translation plate moves relative to the roller, the roller does not rotate, when the limitation of limiting mechanism is released, when the translation plate moves relative to the roller, the roller rotates.

[0016] The utility model discloses a kind of material sliding friction coefficient and rolling friction coefficient, by limiting mechanism, when the roller and connecting shaft synchronous rotation, when the translation plate moves relative to the roller, the roller does not rotate, when the limitation of limiting mechanism is released, when the translation plate moves relative to the roller, the roller rotates. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model can be further illustrated by the non-limiting embodiment shown in the drawings.

[0018] Figure 1 It is the structure schematic view of a kind of friction testing device of the utility model;

[0019] Figure 2 It is the structure schematic view of test platform of the utility model;

[0020] Figure 3 It is the structure schematic view of measuring piece of the utility model;

[0021] Figure 4 It is Figure 3 It is the local enlarged view of A in Fig.

[0022] Figure 5 This is a schematic diagram of the measuring component assembly of this utility model;

[0023] Figure 6 This is a schematic diagram of the clamping plate assembly structure of this utility model;

[0024] The symbols for the main components are explained below:

[0025] Test stand 1, translation plate 2, control panel 3;

[0026] Clamping mechanism 4, screw 41, clamping plate 42, rubber plate 421, nut 43;

[0027] 5. Tensile measuring device; 51. Mounting platform; 52. Tensile measuring gauge; 53. First hook;

[0028] Measuring component 6, roller 61, stage 62, second hook 621, connecting shaft 63;

[0029] Limiting mechanism 7, limiting block 71, limiting pin 72;

[0030] Material fixing component 8, rotating ring 81, elastic positioning component 82, positioning block 821, spring 822. Detailed Implementation

[0031] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figures 1-6 As shown, a friction testing device includes a test platform 1, a translation plate 2 above the test platform 1, the test platform 1 controls the movement of the translation plate 2, a control screen 3 is provided on the front side of the test platform 1, clamping mechanisms 4 are provided on both sides above the translation plate 2, a tensile measuring device 5 is provided on one side of the test platform 1, a measuring component 6 is assembled and connected above the translation plate 2, the measuring component 6 includes two rollers 61, a platform 62 is provided above the rollers 61, a right-angle connecting shaft 63 is assembled and connected between the platform 62 and the rollers 61, the two ends of the rollers 61 are rotatably connected to the connecting shaft 63, a limit mechanism 7 is provided between the rollers 61 and the connecting shaft 63, and a material fixing component 8 is provided at the end of the rollers 61.

[0033] The technical scheme is adopted in the embodiment, the driving component is arranged between the translation plate 2 and the test table 1, the moving speed of the translation plate 2 is controlled through the touch control screen 3, the mass of the measured piece 6 is marked, the weights of different weights are placed above the object table 62, so that the material friction coefficient under different mass conditions is measured, the limiting mechanism 7 is used for limiting the state of the roller 61, when the roller 61 rotates, the rolling friction coefficient of the material is measured, when the roller 61 is static, the sliding friction coefficient of the roller is measured, the material fixing assembly 8 is used for fixing the material, so that the measurement of different materials is realized; when the friction coefficient of the material is measured, the measured material is fixed on the upper side of the translation plate 2 through the clamping mechanism 4, then the measured material is fixed on the lower part of the roller 61, the measured material is fixed through the limiting mechanism 7, then the tension measuring device is connected with the measured piece 6 through the fine line, and the fine line is kept in a straight state, then the moving speed of the translation plate 2 is input through the control screen 3, the overall mass of the measured piece 6 is measured, the friction coefficient of the measured material is measured through the movement of the translation plate 2, and the stability of the object table 62 is kept through the arrangement of the two rollers 61.

[0034] Referring to Figures 1-2 The clamping mechanism 4 comprises a screw rod 41, the upper side of the translation plate 2 is provided with a clamping plate 42 penetrating through the screw rod 41, and the upper side of the clamping plate 42 is provided with a nut 43 threadedly connected with the screw rod 41. In the embodiment, the measured material is clamped by the clamping plate 42 by tightening the nut 43, so that the measured material moves synchronously with the translation plate 2.

[0035] Referring to Figure 6 The lower side of the clamping plate 42 is fixedly connected with a rubber plate 421, and the lower side of the rubber plate 421 is uniformly provided with a recessed plane. In the embodiment, the rubber plate 421 is fixedly connected with the lower side of the clamping plate 42, and the recessed plane is arranged on the lower side of the rubber plate 421, so that the friction between the clamping plate 42 and the measured material is increased, and the measured material moves synchronously with the translation plate 2.

[0036] Referring to Figures 1-2 The tension measuring device 5 comprises a mounting table 51 fixedly connected with the test table 1, a tension measuring meter 52 arranged at the middle portion of the mounting table 51, a first hook 53 arranged at the end portion of the tension measuring meter 52, and a second hook 621 arranged at one side of the object table 62 and located on the same line with the first hook 53. In the embodiment, the mounting table 51 is fixedly connected with the test table 1, the tension measuring meter 52 is used for measuring the tension generated by the movement of the translation plate 2 relative to the measured piece 6, the first hook 53 and the second hook 621 are connected through a flexible connecting line, the first hook 53 and the second hook 621 are connected through the connecting line, and the connecting line is kept in a straight state.

[0037] Referring to Figure 4The material fixing assembly 8 comprises a rotating ring 81 rotatably connected with the connecting shaft 63, opposite sides of the rotating ring 81 are fixedly connected with the roller 61, and the remaining two sides of the rotating ring 81 are assembled and connected with the elastic positioning member 82 between the rotating ring 81 and the roller 61.

[0038] With reference to Figure 4 The limiting mechanism 7 comprises limiting blocks 71 fixedly connected at both sides of the end of the roller 61 and provided with pin holes, the shaft portion of the connecting shaft 63 is provided with through holes in the same line as the pin holes, and the pin holes and the through holes are provided with limiting pins 72.

[0039] With reference to Figure 4 The elastic positioning member 82 comprises a positioning block 821 abutting the inner side of the roller 61, and a spring 822 fixedly connected between the positioning block 821 and the rotating ring 81.

[0040] The control mode of the utility model is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming of the person skilled in the art, the power supply also belongs to the public knowledge in the art, and the utility model is mainly used for protecting the mechanical device, so the control mode and the circuit connection of the utility model will not be explained in detail.

[0041] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A friction testing device comprising a test bench (1), characterized in that: The test platform (1) is provided with a translation plate (2) above, the test platform (1) controls the translation plate (2) to move, the front side of the test platform (1) is provided with a control screen (3), both sides of the translation plate (2) are provided with clamping mechanisms (4), one side of the test platform (1) is provided with a tension measuring device (5), the translation plate (2) is provided with a measuring piece (6) above, the measuring piece (6) comprises two rollers (61), the upper side of the roller (61) is provided with a loading platform (62), the loading platform (62) and the roller (61) are assembled and connected with a right-angle connecting shaft (63), both ends of the roller (61) are rotatably connected with the connecting shaft (63), the roller (61) and the connecting shaft (63) are provided with a limiting mechanism (7), and the end of the roller (61) is provided with a material fixing assembly (8).

2. A friction testing device according to claim 1, characterised in that: The clamping mechanism (4) comprises a screw (41), the upper side of the translation plate (2) is provided with a clamping plate (42) penetrating through the screw (41), and the upper side of the clamping plate (42) is provided with a nut (43) threadedly connected with the screw (41).

3. A friction testing device according to claim 2, wherein: The lower side of the clamping plate (42) is fixedly connected with a rubber plate (421), and the lower side of the rubber plate (421) is uniformly provided with a recessed plane.

4. A friction testing device according to claim 1, wherein: The tension measuring device (5) comprises a mounting table (51) fixedly connected with the test platform (1), the mounting table (51) is provided with a tension measuring meter (52) in the middle, the end of the tension measuring meter (52) is provided with a first hook (53), and one side of the loading platform (62) is provided with a second hook (621) located on the same line as the first hook (53).

5. A friction testing device according to claim 1, wherein: The material fixing assembly (8) comprises a rotating ring (81) rotatably connected with the connecting shaft (63), the opposite sides of the rotating ring (81) are fixedly connected with the roller (61), and the other two sides of the rotating ring (81) are assembled and connected with an elastic positioning piece (82) between the roller (61).

6. A friction testing device according to claim 3, wherein: The limiting mechanism (7) comprises a limiting block (71) provided with a pin hole and fixedly connected on both sides of the end of the roller (61), the shaft portion of the connecting shaft (63) is provided with a through hole located on the same line as the pin hole, and the pin hole and the through hole are provided with a limiting pin (72) therein.

7. A friction testing device according to claim 5, wherein: The elastic positioning piece (82) comprises a positioning block (821) attached to the inner side of the roller (61), and a spring (822) is fixedly connected between the positioning block (821) and the rotating ring (81).

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