Clamping jig for friction coefficient test

Abstract

The utility model relates to a clamping jig for friction coefficient testing, which comprises a mounting frame, connecting pieces are connected to the front and rear sides of the left and right parts of the mounting frame, hydraulic cylinders are mounted on the front and rear sides of the mounting frame, clamping plates are connected to the telescopic ends of the hydraulic cylinders, two guide pieces are connected to the outer sides of the clamping plates, and the guide pieces are slidably connected with the mounting frame. Supporting pieces are connected to the left portion and the right portion in the mounting frame and slidably connected with the clamping plates, driving motors are mounted on the left side and the right side of the mounting frame, and supports are connected to output shafts of the driving motors. The supporting frames are driven by the driving motor to rotate, the supporting frames are enclosed into a whole, a stable bearing space is provided for a tested sample, it is ensured that the sample is kept flat and stable in the testing process, meanwhile, the rubber pad plays a buffering role, and the supporting frames are prevented from being damaged due to too large force when making contact with one another; and meanwhile, the tested object is prevented from being damaged when being placed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of friction coefficient test, especially relate to a kind of clamping fixture of friction coefficient test. BACKGROUND

[0002] Friction coefficient test is a kind of experimental method for measuring the friction between two contact surfaces, when carrying out friction coefficient test, usually utilize clamping fixture to fix the sample to be tested and ensure that it remains stable contact during testing, avoid sample sliding or deviation, to ensure the accuracy of test results, the object to be tested is placed into clamping fixture and is tested for friction coefficient, but in actual placement process, the object to be tested can appear skew, it will affect subsequent friction test results, even cause damage to the object to be tested.

[0003] For the above problems, a kind of clamping fixture of friction coefficient test is developed. UTILITY MODEL CONTENT

[0004] In order to overcome the defect that the object to be tested can appear skew in actual placement process, it will affect subsequent friction test results, even cause damage to the object to be tested, the utility model provides a kind of clamping fixture of friction coefficient test.

[0005] The technical scheme of the utility model is: a kind of clamping fixture of friction coefficient test, including installation frame, the left and right two parts of installation frame are connected with connecting piece on front and back two sides, the left and right two parts of installation frame are installed with hydraulic cylinder on front and back two sides, the hydraulic cylinder telescopic end is connected with clamping plate, the outer side of clamping plate is connected with 2 guide pieces, the guide piece is slidably connected with the installation frame, the left and right two parts of installation frame are connected with support piece, the support piece is slidably connected with the clamping plate, the left and right two sides of installation frame are installed with driving motor, the output shaft of driving motor is connected with support frame.

[0006] Preferably, it further includes rubber pad, the inner side of support frame is connected with the rubber pad.

[0007] Preferably, the left and right two sides of installation frame are connected with rib plate for reinforcement.

[0008] Preferably, the inner side of clamping plate is provided with inclined anti-skid line.

[0009] Preferably, the support piece can guide the clamping plate.

[0010] Preferably, the driving motor is detachably connected structure.

[0011] By adopting the above technical scheme, the utility model has the beneficial effects that:

[0012] The utility model discloses a drive motor drives the rotation of support frame, and the support frame is enclosed into a whole, and the stable bearing space is provided for the sample to be tested, and the sample is kept flat and stable during the testing process, and the rubber pad plays the buffering effect, prevents the mutual contact of support frame from being damaged due to the excessive force, and avoids the damage of the object to be tested. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model.

[0014] Fig. 2 It is the partial section three-dimensional structure schematic diagram of the utility model.

[0015] Fig. 3 It is the three-dimensional structure schematic diagram of part of the utility model.

[0016] In the drawing mark: 1 - installation frame, 2 - connecting piece, 3 - hydraulic cylinder, 4 - guide piece, 5 - clamping plate, 6 - support piece, 7 - drive motor, 8 - support frame, 9 - rubber pad. DETAILED DESCRIPTION

[0017] The embodiment of the utility model is described in detail below with reference to the drawings.

[0018] A kind of friction coefficient test's clamping fixture, as shown in Figs. 1-3 It includes installation frame 1, the rib plate of reinforcing effect is connected in the front and back of installation frame 1, connecting piece 2 is connected in the front and back of the left and right two parts of installation frame 1, hydraulic cylinder 3 is installed in the front and back of installation frame 1, clamping plate 5 is connected on the telescopic end of hydraulic cylinder 3, the inner side of clamping plate 5 is equipped with inclined anti-skid line, 2 guide pieces 4 are connected on the outer side of clamping plate 5, guide piece 4 is slidably connected with installation frame 1, support piece 6 is connected in the left and right two parts of installation frame 1, support piece 6 is slidably connected with clamping plate 5, support piece 6 can be the guide effect of clamping plate 5, drive motor 7 is installed in the left and right sides of installation frame 1, drive motor 7 is detachably connected structure, support frame 8 is connected on the output shaft of drive motor 7, rubber pad 9 is connected on the inner side of support frame 8.

[0019] It should be noted that the friction coefficient test is an experimental method for measuring the friction between two contact surfaces, and during the friction coefficient test, a clamping jig is usually used to fix the test sample and ensure that it remains in stable contact during the test to avoid sample sliding or deviation, thereby ensuring the accuracy of the test results. During the test, first, the connecting piece 2 is connected with the test equipment, then the test object is placed in the mounting frame 1, in order to avoid the test object from being tilted when being placed, which affects the subsequent friction test results, the driving motor 7 can be started, the output shaft of the driving motor 7 rotates to drive the support frame 8 to rotate inward, the support frame 8 is enclosed into a whole to provide a bearing space for the test object, which facilitates the test object to be placed flat in the mounting frame 1, and the rubber pad 9 on the inner side of the support frame 8 can effectively buffer and adjust the clamping force to avoid damaging the test object due to excessive clamping force. The driving motor 7 adopts a detachable connection structure, which is convenient for maintenance and replacement, then the hydraulic cylinder 3 is started, the extension end of the hydraulic cylinder 3 drives the clamping plate 5 to push inward, the inclined anti-skid pattern on the inner side of the clamping plate 5 can effectively increase the friction force with the surface of the test object, and ensure that the object does not slide or fall off during the test process. The guide 4 on the outer side of the clamping plate 5 is slidingly connected with the mounting frame 1, which ensures that the clamping plate 5 remains stable during movement and avoids deviation, the support 6 further provides a guiding action for the clamping plate 5 to ensure the accuracy of the movement track of the clamping plate 5, thereby ensuring uniform distribution of the clamping force. After the clamping plate 5 clamps the test object, the driving motor 7 is started again, the driving motor 7 drives the support frame 8 to flip outward and reset, reserving space for testing, then the test equipment starts to apply external force to make the mounting frame 1 move, simulating the friction in actual use. Due to the action of the inclined anti-skid pattern of the clamping plate 5, the test object can maintain stable contact during the test process, ensuring the accuracy and reliability of the test data.

[0020] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A clamping jig for coefficient of friction testing, characterized by, The utility model provides a kind of hydraulic cylinder, including installation frame (1), the left and right two parts of the installation frame (1) are connected with connecting piece (2) on the front and back two sides, the front and back two sides of the installation frame (1) are equipped with hydraulic cylinder (3), the hydraulic cylinder (3) telescopic end is connected with clamping plate (5), the outer side of the clamping plate (5) is connected with 2 guide members (4), the guide member (4) is slidably connected with the installation frame (1), the left and right two parts of the installation frame (1) are connected with support piece (6), the support piece (6) is slidably connected with the clamping plate (5), the left and right two sides of the installation frame (1) are equipped with driving motor (7), the output shaft of the driving motor (7) is connected with support frame (8).

2. The clamping fixture for coefficient of friction testing of claim 1, wherein, It also includes rubber pad (9), the inner side of the support frame (8) is connected with the rubber pad (9).

3. The clamping fixture for coefficient of friction testing of claim 1, wherein, The front and back two sides of the installation frame (1) are connected with reinforcing rib plate.

4. The clamping fixture for coefficient of friction testing of claim 1, wherein, The inner side of the clamping plate (5) is provided with inclined anti-skid lines.

5. The clamping fixture for coefficient of friction testing of claim 1, wherein, The support piece (6) can guide the clamping plate (5).

6. The clamping fixture for coefficient of friction testing of claim 1, wherein, The driving motor (7) is detachably connected.

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