Friction resistance testing machine

Abstract

The utility model discloses a friction resistance testing machine, and belongs to the technical field of friction resistance tests. The friction resistance testing machine comprises: a support having a guide rail and a bearing plate, the guide rail extending along a vertical direction, and the bearing plate being located at one end of the support close to the ground; the adjusting unit is in sliding connection with the guide rail so as to move in the vertical direction, and the adjusting unit comprises a connecting frame; the rotating unit is connected with the connecting frame, the rotating unit is provided with a friction piece, the friction piece faces the bearing plate, a test space is formed between the friction piece and the bearing plate, and the connecting frame drives the friction piece to move along the guide rail to adjust the test space; and the fixing unit is connected with the bearing plate and comprises a plurality of clamping plates, and at least one of the clamping plates is a movable plate. The utility model provides a testing machine capable of carrying out a friction resistance test on a large sample.

Description

Technical Field

[0001] The utility model relates to the technical field of friction resistance testing, and particularly relates to a friction resistance testing machine. Background Art

[0002] Friction resistance testing is to simulate the friction conditions in actual use, oppose a sample to a specific friction body, and observe the wear condition of the sample surface, so as to evaluate the wear performance and durability of the material. This kind of testing is widely applied in many fields, including automobile manufacturing, aerospace, electronic products, textiles, and medical equipment, etc.

[0003] Through friction resistance testing, the wear resistance of the material can be mastered to determine whether it meets the corresponding working requirements. In addition, the product parameters obtained through friction resistance can be fed back to product design and improvement.

[0004] The current friction resistance testing machines are usually devices for small-scale tests, lacking testing machines for large specimens. Therefore, a friction resistance testing machine is proposed to conduct friction resistance tests on large specimens. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a friction resistance testing machine, aiming to conduct friction resistance tests on large specimens.

[0006] To achieve the above purpose, the friction resistance testing machine proposed by the utility model includes:

[0007] A bracket, the bracket has a guide rail and a bearing plate, the guide rail extends in the vertical direction, and the bearing plate is located at one end of the bracket close to the ground;

[0008] An adjusting unit, the adjusting unit is slidably connected to the guide rail to move in the vertical direction, and the adjusting unit includes a connecting frame;

[0009] A rotating unit, the rotating unit is connected to the connecting frame, the rotating unit has a friction member, the friction member faces the bearing plate, a test space is formed between the friction member and the bearing plate, and the connecting frame drives the friction member to move along the guide rail to adjust the test space;

[0010] A fixing unit, the fixing unit is connected to the bearing plate, and the fixing unit includes a plurality of clamping plates, and at least one of the plurality of clamping plates is a movable plate.

[0011] Optionally, in an embodiment of the utility model, the rotating unit includes:

[0012] A driving machine;

[0013] A speed reducer, the speed reducer is connected to the driving machine;

[0014] The first coupling, the first coupling is connected to the speed reducer;

[0015] The torque sensor, the torque sensor is connected to the first coupling;

[0016] The second coupling, the second coupling is connected to the torque sensor;

[0017] The friction member, the friction member is connected to the second coupling through a rotating disk.

[0018] Optionally, in an embodiment of the present invention, the rotating unit further includes a counterweight disk, and the counterweight disk is detachably connected to the rotating disk.

[0019] Optionally, in an embodiment of the present invention, it further includes a control unit, and the control unit is communicatively connected to the torque sensor.

[0020] Optionally, in an embodiment of the present invention, an operating platform is provided at the top of the bracket, the control unit is located above the operating platform, and the adjusting unit and the rotating unit are located below the operating platform.

[0021] Optionally, in an embodiment of the present invention, the friction member is detachably connected to the rotating disk.

[0022] Optionally, in an embodiment of the present invention, the bracket further includes a vibration damping support.

[0023] Optionally, in an embodiment of the present invention, the bracket further includes universal wheels, the vibration damping support is telescopically connected to the bracket, the bracket has a working state in which the vibration damping support contacts the ground and the universal wheels are away from the ground, and a moving state in which the vibration damping support is away from the ground and the universal wheels contact the ground.

[0024] Optionally, in an embodiment of the present invention, the adjusting unit includes:

[0025] The connecting frame;

[0026] The sliding rod, the sliding rod is connected to the connecting frame;

[0027] The rod barrel, the sliding rod is slidably connected to the rod barrel, and the rod barrel is fixedly connected to the bracket and arranged in the vertical direction;

[0028] The handwheel, the handwheel is located on one side of the bracket, and the handwheel is drivingly connected to the sliding rod.

[0029] Optionally, in an embodiment of the present invention, the connecting frame includes:

[0030] A connecting plate connected to the rotating unit;

[0031] A supporting rib is connected to the connecting plate.

[0032] Compared with the prior art, the utility model can at least achieve the following beneficial effects. Conducting a friction test is an important way to obtain the friction parameters of a sample. When conducting a friction test, the sample needs to meet certain test standards, which include the size of the sample. Therefore, when conducting a friction test, some samples are inevitably large samples. By setting a slide rail, the adjustment unit can adjust the position of the rotating unit in the vertical direction. By moving the rotating unit upward, a larger test space is formed between the friction member and the bearing plate to meet the placement of large samples. At least one of the multiple clamps of the fixed unit is a movable plate. By adjusting the movable plate, the fixed unit can clamp samples of different sizes. After the sample is placed and clamped, the friction member is lowered to the test surface of the sample by the adjustment unit until the friction force between the friction member and the test surface reaches the test value, and then the sample is subjected to a friction test according to the test requirements. This solution improves the overall structure of the friction tester, provides an adjustable and larger test space to accommodate the sample, and solves the technical problem that the current friction tester is difficult to perform friction tests on large samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 This is a structural schematic diagram of a friction resistance testing machine of the utility model;

[0035] Figure 2 This is a structural schematic diagram of a friction resistance testing machine of the utility model;

[0036] Figure 3 This is a structural schematic diagram of a friction resistance testing machine of the utility model;

[0037] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0038] Description of Figure Numbers:

[0039] 100, support; 110, guide rail; 120, bearing plate; 130, operating table; 140, vibration damping support; 150, universal wheel; 210, connecting frame; 211, connecting plate; 212, support rib plate; 220, sliding rod; 230, rod barrel; 240, hand wheel; 310, friction member; 320, drive motor; 330, speed reducer; 340, first coupling; 350, torque sensor; 360, second coupling; 370, rotating disk; 380, counterweight disk; 410, clamping plate; 420, movable plate; 500, control unit; 600, electric control cabinet;

[0040] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0041] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] Referring to Figures 1 to 3 , in which Figure 1 and Figure 2 are structural schematic diagrams in different perspective directions, Figure 3 is a structural schematic diagram after hiding the outer shell of the torque sensor 350. The present utility model provides a friction-resistant testing machine, comprising:

[0046] A bracket 100, the bracket 100 having a guide rail 110 and a bearing plate 120, the guide rail 110 extending in the vertical direction, and the bearing plate 120 being located at one end of the bracket 100 close to the ground;

[0047] An adjusting unit, the adjusting unit being slidably connected to the guide rail 110 to move in the vertical direction, the adjusting unit including a connecting frame 210;

[0048] A rotating unit, the rotating unit being connected to the connecting frame 210, the rotating unit having a friction member 310, the friction member 310 facing the bearing plate 120, a test space being formed between the friction member 310 and the bearing plate 120, and the connecting frame 210 driving the friction member 310 to move along the guide rail 110 to adjust the test space;

[0049] A fixing unit, the fixing unit being connected to the bearing plate 120, the fixing unit including a plurality of clamping plates 410, at least one of the plurality of clamping plates 410 being a movable plate 420.

[0050] Conducting a friction resistance test is an important way to obtain the friction resistance parameters of a specimen. When a specimen undergoes a friction resistance test, it needs to meet certain test standards, which include the size of the specimen. Therefore, during the friction resistance test, some specimens are inevitably large specimens. By setting up a slide rail, the adjustment unit can adjust the position of the rotating unit in the vertical direction. By moving the rotating unit upward, a larger test space is formed between the friction member 310 and the bearing plate 120 to accommodate the placement of large specimens. At least one of the multiple clamping plates 410 of the fixing unit is a movable plate 420. By adjusting the movable plate 420, the fixing unit can clamp specimens of different sizes. After the placement and clamping of the specimen are completed, the friction member 310 is lowered to the test surface of the specimen by the adjustment unit until the friction force between the friction member 310 and the test surface reaches the test value, and then the friction resistance test is carried out on the specimen according to the test requirements. This solution improves the overall structure of the friction resistance testing machine to provide an adjustable test space with a larger volume to accommodate the specimen, solving the technical problem that it is difficult for the current friction resistance testing machine to conduct friction resistance tests on large specimens.

[0051] Preferably, two movable plates 420 are provided in the fixing unit, and the two movable plates 420 are arranged oppositely. By adjusting the two movable plates 420 respectively, the testing machine can not only meet the clamping of large specimens but also the clamping of small specimens, improving the versatility of the testing machine. It should be noted that only the structure with a movable plate 420 on one side is shown in the drawings. An embodiment with two movable plates 420 arranged oppositely can be achieved by using the same structure on the opposite side, which is understandable to those skilled in the art.

[0052] Furthermore, the rotating unit includes a driving machine 320, a speed reducer 330, a first coupling 340, a torque sensor 350, a second coupling 360, and a friction member 310. During the friction resistance test, the friction force between the friction member 310 and the specimen will generate a corresponding torque. The torque sensor 350 can accurately sense and measure the magnitude of this torque. Through the torque sensor 350, the friction force value during the friction resistance test can be monitored in real time, which is beneficial to ensuring the accuracy of the measurement results. By analyzing the obtained data, the friction mechanism, wear behavior, and influencing factors of the specimen can also be deeply understood. The connection structure of the torque sensor 350 can refer to Figure 4 .

[0053] To facilitate the real-time monitoring of test parameters, the control unit 500 is communicatively connected to the torque sensor 350. The control unit 500 processes the data measured by the torque sensor 350 through calculation and displays it in different forms, which is conducive to the precise control of test parameters. Specifically, the bracket 100 further includes an operation table 130, and the control unit 500 is installed on the operation table 130. Setting up the operation table 130 also facilitates the testers to perform other test-related operations on the operation table 130.

[0054] For the friction resistance test, different types of friction members 310 can be selected according to different specimens. The friction member 310 is designed to be detachably connected to the rotating disk 370, enabling the friction resistance test of multiple specimens. For example, when conducting the friction resistance test on the floor, a wheel-shaped friction member can be used.

[0055] In the friction resistance test, the magnitude of the pressure exerted by the friction member 310 on the specimen is related to the magnitude of the frictional force between the two. To enable the friction member 310 to exert a pressure that meets the requirements on the specimen, the connecting plate 211 is detachably connected with a counterweight disk 380 to adjust the frictional force on the specimen. The weight of the counterweight disk 380 can be selected, such as 5 - 10 kg or other weights, to adjust the frictional force between the specimen and the friction member 310.

[0056] The adjusting unit includes a connecting frame 210, a sliding rod 220, and a rod barrel 230. The sliding rod is slidably connected to the rod barrel 230. With their cooperation with the guide rail 110, the stable movement of the friction member 310 is achieved, ensuring that the friction member 310 can smoothly contact the specimen. The position adjustment of the friction member 310 can be manually adjusted by using a handwheel 240 or mechanically adjusted by using a driving device. Compared with mechanical adjustment, manual adjustment has higher adjustability and, to a certain extent, higher adjustment accuracy.

[0057] During the test process, the entire testing machine will inevitably vibrate. To reduce the overall vibration of the testing machine, the bracket 100 is provided with vibration damping supports 140 to reduce the overall shaking degree through the vibration damping supports 140.

[0058] The vibration of the testing machine is mainly caused by the movement of the friction member 310. To further reduce the vibration degree, the connecting frame 210 directly connected to the rotating unit includes a connecting plate 211 and a support rib plate 212. By setting the support rib plate 212, the stability of the connecting frame 210 is improved to achieve the effect of reducing vibration.

[0059] Further, in order to facilitate the movement of the testing machine, universal wheels 150 are provided below the bracket 100. Since the universal wheels 150 and the vibration damping supports 140 are arranged in close proximity, and both can only achieve their corresponding functions when in contact with the ground alone, in order to prevent the functions of the vibration damping supports 140 and the universal wheels 150 from affecting each other, the vibration damping supports 140 are set to be telescopically connected to the bracket 100. By using a lead screw and a nut, the extension and retraction of the vibration damping supports 140 are realized. During movement, the vibration damping supports 140 are retracted so that the universal wheels 150 are in contact with the ground. During testing, the vibration damping supports 140 are extended so that the vibration damping supports 140 are in contact with the ground.

[0060] In addition, the testing machine further includes an electric control cabinet 600, which is electrically connected to the electrical components in other functional units to control a variety of electrical components.

[0061] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A friction tester, characterized in that: include: A bracket, wherein the bracket has a guide rail and a bearing plate, the guide rail extends in a vertical direction, and the bearing plate is located at one end of the bracket close to the ground; an adjusting unit, the adjusting unit being slidably connected to the guide rail to move in a vertical direction, the adjusting unit comprising a connecting frame; A rotating unit, the rotating unit is connected to the connecting frame, the rotating unit has a friction member, the friction member faces the bearing plate, a test space is formed between the friction member and the bearing plate, and the connecting frame drives the friction member to move along the guide rail to adjust the test space; A fixing unit is connected to the bearing plate, and the fixing unit comprises a plurality of clamping plates, at least one of the plurality of clamping plates is a movable plate.

2. The friction tester according to claim 1, characterized in that: The rotating unit comprises: Driving machine; A reducer connected to the driving machine; A first coupling, wherein the first coupling is connected to the reducer; a torque sensor connected to the first coupling; a second coupling connected to the torque sensor; A friction member is connected to the second coupling via a rotating disk.

3. The friction tester according to claim 2, characterized in that: The rotating unit further comprises a counterweight disc, and the counterweight disc is detachably connected to the rotating disc.

4. The friction tester according to claim 2, characterized in that: A control unit is also included, and the control unit is communicatively connected with the torque sensor.

5. The friction resistance testing machine according to claim 4, characterized in that: An operating table is arranged on the top of the bracket, the control unit is located above the operating table, and the adjusting unit and the rotating unit are located below the operating table.

6. The friction resistance testing machine according to claim 2, characterized in that: The friction member is detachably connected to the rotating disk.

7. The friction resistance tester according to claim 1, characterized in that: The bracket also includes a vibration-damping support.

8. The friction resistance tester according to claim 7, characterized in that: The bracket also includes a universal wheel, the vibration-damping support is telescopically connected to the bracket, and the bracket has a working state in which the vibration-damping support is in contact with the ground and the universal wheel is away from the ground, and a moving state in which the vibration-damping support is away from the ground and the universal wheel is in contact with the ground.

9. The friction tester according to claim 1, characterized in that: The regulating unit includes: Connecting frame; A sliding rod connected to the connecting frame; A rod barrel, the sliding rod is slidably connected to the rod barrel, and the rod barrel is fixedly connected to the bracket and arranged along the vertical direction; A hand wheel is located at one side of the bracket and is drivingly connected to the sliding rod.

10. The friction resistance tester according to claim 9, characterized in that: The connecting frame comprises: A connecting plate connected to the rotating unit; A supporting rib is connected to the connecting plate.

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