Friction and wear device for testing antifriction sheet

Abstract

The friction and wear device comprises a test assembly and a clamp, the clamp comprises a supporting seat and a plurality of fixing parts, the supporting seat is provided with a mounting part used for mounting the antifriction sheet, the fixing parts are detachably arranged on the supporting seat at intervals, and the testing assembly is used for testing the friction and wear of the antifriction sheet. The plurality of fixing pieces are used for pressing the antifriction sheet against the supporting seat, and the test assembly is used for carrying out wear test on the antifriction sheet. The device for testing the antifriction sheet has the characteristics of high repeatability and low time consumption, and the wear resistance of the antifriction sheets of different processes or formulas can be quickly evaluated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile friction reducing gasket test, especially relates to a friction and wear device for testing friction reducing gasket. BACKGROUND

[0002] In the outer star wheel assembly of the automobile transmission shaft, the friction reducing gasket is an important component, mainly plays the role of reducing friction, is usually arranged at the driving shaft and the wheel hub cooperation surface to reduce and improve the friction abnormal sound problem existing between the two.

[0003] The friction reducing gasket is usually made of stainless steel as base material, but the wear resistance of itself cannot reach the application demand, and the surface will be worn after long time work, thereby affecting its normal friction reducing effect.Therefore, the material surface of the stainless steel base material is modified, and a polymer coating with polytetrafluoroethylene as the main wear-resistant material is usually made on the surface, so that the better friction reducing and wear resistance requirements are reached.In actual use process, the friction reducing effect of the friction reducing gasket not only depends on the wear resistance of the coating, but also needs the better bonding force of the coating and the base material.

[0004] At present, the actual wear resistance effect of the friction reducing gasket is usually simulated by the torsional fatigue test, but the method consumes certain bench resources and takes a long time. UTILITY MODEL CONTENT

[0005] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a friction and wear device for testing friction reducing gasket, which is used to solve the problem of long test time in the related art.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a friction and wear device for testing friction reducing gasket, which comprises a test assembly and a clamp, the clamp comprises a support seat and a plurality of fixing pieces, the support seat is provided with a mounting part for mounting the friction reducing gasket, a plurality of the fixing pieces are spaced and detachably arranged on the support seat, and the fixing pieces are used to press the friction reducing gasket against the support seat, and the test assembly is used to test the wear of the friction reducing gasket.

[0007] Preferably, the mounting part is configured as a hole.

[0008] Preferably, the mounting part is circular, polygonal, semicircular ring or arc-shaped.

[0009] Preferably, the support seat comprises an upper support piece and a lower support piece, the mounting part is arranged on the upper support piece, and the upper support piece is connected to one side of the lower support piece, so that the mounting part and the lower support piece form a space for accommodating the friction reducing gasket.

[0010] Preferably, the edge of the lower support piece protrudes from the edge of the upper support piece.

[0011] Preferably, the plurality of fixing members are connected to the upper support member on a side facing away from the lower support member, and the plurality of fixing members are arranged across two sides of the mounting portion.

[0012] Preferably, the fixing members are provided with non-slip pads on a side facing the upper support member and / or an inner side of the mounting portion.

[0013] Preferably, the mounting portion is configured as a plurality of spaced protrusions, and the area between the plurality of protrusions is used to accommodate the friction-reducing sheet.

[0014] As described above, the test friction-reducing sheet friction and wear device has the following beneficial effects: by using the device to test the friction-reducing sheet, actual torsional fatigue testing is not required, the friction-reducing sheet does not need to be installed in a universal joint assembly, and the universal joint assembly is used to simulate the operating conditions of a vehicle to test the wear resistance of the friction-reducing sheet. The device for testing the friction-reducing sheet has the characteristics of high repeatability and short time consumption, and can quickly evaluate the wear resistance of friction-reducing pads of different processes or formulations. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A schematic view of a clamp in the test friction-reducing sheet friction and wear device of the present application is shown.

[0016] Element number explanation

[0017] 10, friction-reducing sheet; 20, fixing member; 30, upper support member; 40, lower support member. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be described in detail with specific reference to particular examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in different specific embodiments, and the details in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0019] Please refer to Figure 1 It should be noted that the drawings provided in the present embodiment only illustrate the basic concept of the present application in a schematic manner, and the drawings only show the components related to the present application, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be randomly changed in terms of shape, number and proportion, and the layout pattern of the components can also be more complex.

[0020] The embodiment provides a friction and wear device for testing friction-reducing sheets, which comprises a test assembly and a clamp for clamping and fixing the friction-reducing sheet 10, and the test assembly is used for wear test of the friction-reducing sheet 10, so as to evaluate the wear resistance of the friction-reducing sheet 10. The clamp comprises a support seat and a plurality of fixing members 20, the support seat is provided with a mounting portion for mounting the friction-reducing sheet 10, and the plurality of fixing members 20 are arranged at intervals and detachably arranged on the support seat, the plurality of fixing members 20 are used for pressing the friction-reducing sheet 10 against the support seat, and the test assembly is used for wear test of the friction-reducing sheet 10. The test assembly can be a friction and wear instrument.

[0021] During use of the device, the friction-reducing sheet 10 is first placed in the mounting portion, and then the friction-reducing sheet 10 is pressed against the support seat by the plurality of fixing members 20, so that the friction-reducing sheet 10 is fixed. By using the plurality of fixing members 20 for fixing, the friction-reducing sheet 10 can be fixed more firmly, so that loosening during the test is avoided.

[0022] Then, the entire clamp is loaded into the test assembly for test. The test assembly contacts the friction-reducing sheet 10 in a friction mode, the test assembly selects a steel ball for friction with the friction-reducing sheet 10, and before the test sample is tested, the test conditions are set according to the actual working conditions, including the reciprocating frequency, reciprocating amplitude, temperature and pressure of the steel ball. During the test, the friction coefficient of the friction-reducing sheet 10 gradually increases from a lower friction coefficient to a larger friction coefficient, and the lower friction coefficient is due to the effect of the coating on the surface of the friction-reducing sheet 10; when the coating is gradually worn off and the metal substrate is reached, the friction coefficient increases. When the friction-reducing pad is worn to the substrate, the wear is intensified at this time, and it can be understood that the friction-reducing sheet 10 has lost the friction-reducing effect. By monitoring the change trend of the friction coefficient of the friction-reducing sheet 10, the wear resistance of the friction-reducing sheet 10 can be evaluated.

[0023] In the conventional test process of the friction-reducing sheet 10, the friction-reducing sheet 10 is installed in a universal joint assembly, and the wear resistance of the friction-reducing sheet 10 is tested by using the universal joint assembly to simulate the running state of the automobile. This mode not only takes a long time but also has high cost; and the clamp of the embodiment only needs to use a conventional test wear instrument for test after clamping and fixing the friction-reducing sheet 10, so that the cost is low and the time consumption is short.

[0024] In an embodiment, the mounting portion can be a plurality of protruding structures arranged at intervals, and the plurality of protrusions surround to form a region for accommodating the friction-reducing sheet 10. When the friction-reducing sheet 10 is placed in the region between the plurality of protrusions, the plurality of protrusions abut against the side surface of the friction-reducing sheet 10, so as to position the friction-reducing sheet 10.

[0025] In the embodiment, the mounting portion is configured as a hole, and the friction-reducing sheet 10 is placed in the hole when the friction-reducing sheet 10 is mounted. The shape of the mounting portion can be circular, polygonal, arc-shaped, semicircular ring, etc. The embodiment does not limit the shape of the mounting portion, which is determined according to the working condition.

[0026] The support seat of the embodiment is a split structure, and includes an upper support 30 and a lower support 40. The mounting portion is arranged on the upper support 30, for example, in the form of a semicircular ring. The upper support 30 is connected to one side of the lower support 40 in a stacked form, for example, through detachable connection by bolts. At this time, the mounting portion on the upper support 30 and the lower support 40 surround a space for accommodating the friction-reducing sheet 10, which is in the form of a blind hole.

[0027] In the embodiment, the shape of the fixing member 20 can be a strip, but is not limited thereto. When the friction-reducing sheet 10 is placed in the mounting portion, the fixing member 20 is detachably fixed to the upper support 30 of the support seat through bolts. The side of the fixing member 20 facing the upper support 30 abuts against the friction-reducing sheet 10, and the plurality of fixing members 20 press the friction-reducing sheet 10 against the support seat, thereby completing fastening to avoid shaking of the friction-reducing sheet 10 during testing.

[0028] In order to fix more firmly, the fixing member 20 spans both sides of the mounting portion, that is, both ends of the fixing member 20 are located on both sides of the friction-reducing sheet 10. At this time, both ends of the fixing member 20 are fixed to the upper support 30 through bolts, and the middle part of the fixing member 20 presses the friction-reducing sheet 10.

[0029] The side of the fixing member 20 facing the upper support 30 and / or the inner side of the mounting portion is provided with an anti-skid pad, which can be rubber. The anti-skid pad is in contact with the friction-reducing sheet 10, and the anti-skid pad increases the friction to avoid shaking and other loosening problems of the friction-reducing sheet 10 during testing.

[0030] In the embodiment, the size of the lower support 40 is greater than that of the upper support 30, and the edge of the lower support 40 protrudes beyond the edge of the upper support 30. When the support seat is fixed, a pressing plate can be used to press the edge part of the lower support 40, thereby quickly fixing the support seat.

[0031] In summary, the implementation process of the friction and wear device for testing the friction-reducing sheet 10 is as follows: the friction-reducing sheet 10 is placed in the mounting portion of the upper support 30, the two ends of the two fixing members 20 are fastened to the support by means of bolts, and the middle part of the fixing member 20 presses the friction-reducing sheet 10, so that the friction-reducing sheet 10 is firmly fixed to the support seat. The support seat is installed on the test assembly, and the lower support 40 is fixed to the test assembly by means of the pressing plate. After the support seat is installed, the wear test of the friction-reducing sheet 10 is carried out according to the set test conditions, and the wear resistance of the friction-reducing sheet 10 is analyzed by monitoring the change trend of the friction coefficient. Therefore, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0032] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used to limit 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 and wear test device for anti-friction plates, characterized in that: It includes a test assembly and a fixture, the fixture includes a support seat and multiple fixing parts, the support seat is provided with a mounting portion for installing an anti-friction plate, multiple fixing parts are spaced and detachably arranged on the support seat, multiple fixing parts are used to press the anti-friction plate against the support seat, and the test assembly is used to perform wear testing on the anti-friction plate.

2. The friction and wear testing device for anti-friction pads according to claim 1, characterized in that: The mounting portion is configured as a hole.

3. The friction and wear testing device for anti-friction pads according to claim 2, characterized in that: The mounting portion is circular, polygonal, semicircular or arc-shaped.

4. The friction and wear testing device for anti-friction pads according to claim 2, characterized in that: The support seat includes an upper support member and a lower support member, the mounting portion is provided on the upper support member, and the upper support member is connected to one side of the lower support member so that the mounting portion and the lower support member enclose a space for accommodating the anti-friction plate.

5. The friction and wear testing device for anti-friction pads according to claim 4, characterized in that: The edge of the lower support member protrudes from the edge of the upper support member.

6. The friction and wear testing device for anti-friction pads according to claim 4, characterized in that: The plurality of fixing members are connected to a side of the upper supporting member facing away from the lower supporting member, and the plurality of fixing members span across two sides of the mounting portion.

7. The friction and wear testing device for anti-friction pads according to claim 4, characterized in that: An anti-slip pad is provided on a side of the fixing member facing the upper supporting member and / or an inner side of the mounting portion.

8. The friction and wear testing device for anti-friction pads according to claim 1, characterized in that: The mounting portion is configured as a plurality of protrusions arranged at intervals, and the areas between the plurality of protrusions are used to accommodate the anti-friction plate.

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