Friction coefficient tester

Abstract

The utility model relates to the technical field of experimental measuring instruments, and provides a friction coefficient measuring instrument which comprises a friction coefficient measuring instrument body, a material blocking plate is fixedly connected to the right side of the upper surface of the friction coefficient measuring instrument body, and a limiting column located on the left side of the material blocking plate is fixedly connected to the upper surface of the friction coefficient measuring instrument body. The inner surface of the pressing block is movably connected to the upper side of the outer surface of the limiting column in a sleeving manner; the pressing mechanism is arranged on the upper surface of the friction coefficient tester; wherein the pressing mechanism comprises a first motor, the first motor is fixedly installed on the right side of the upper surface of the friction coefficient tester and located on the right side of the material blocking plate, the other end of an output shaft of the first motor is fixedly connected with a circular shaft in a sleeving mode, and the outer surface of the circular shaft is fixedly connected with a rotating rod in a sleeving mode; and the other end of the rotating rod is hinged with a connecting rod. Through the technical scheme, the problem of unstable fixation in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental measuring instruments, and in particular to a friction coefficient measuring instrument. Background Art

[0002] The friction coefficient meter is a measuring instrument used to measure the static friction coefficient and dynamic friction coefficient of materials such as plastic films and sheets, rubber, paper, cardboard, woven bags, fabric styles, metal composite belts for communication cables and optical cables, conveyor belts, wood, coatings, brake pads, wipers, shoe materials, tires, etc. when they slide. By measuring the flatness data of the material surface, the operator can adjust the material production quality process indicators to produce products that meet the requirements.

[0003] When operators measure the friction coefficient of materials, they often use a friction coefficient meter to obtain the dynamic friction coefficient and static friction coefficient of the experimental material. In actual use, although the existing friction coefficient meter has basic detection functions, the existing friction coefficient meter generally clamps the experimental material through a spring, which is not stable. The experimental material often detaches during the test, so it needs to be improved. Utility Model Content

[0004] The utility model provides a friction coefficient tester, which solves the problem of unstable fixation in the related technology.

[0005] The technical solution of the utility model is as follows: A friction coefficient tester, comprising:

[0006] A friction coefficient tester, wherein a material baffle plate is fixedly connected to the right side of the upper surface of the friction coefficient tester, and a limiting column located on the left side of the material baffle plate is fixedly connected to the upper surface of the friction coefficient tester;

[0007] A pressing block, the inner surface of which is movably sleeved on the upper side of the outer surface of the limiting column;

[0008] A clamping mechanism, wherein the clamping mechanism is arranged on the upper surface of the friction coefficient tester;

[0009] Among them, the clamping mechanism includes a No. 1 motor, which is fixedly installed on the right side of the upper surface of the friction coefficient tester, and the No. 1 motor is located on the right side of the material baffle plate. The other end of the output shaft of the No. 1 motor is fixedly sleeved with a round shaft, and the outer surface of the round shaft is fixedly sleeved with a rotating rod, and the other end of the rotating rod is hinged with a connecting rod, and the other end of the connecting rod is hinged with a connecting block, the lower surface of the connecting block is fixedly connected to the right side of the upper surface of the clamping block, and the rotation of the rotating rod causes the connecting rod to drive the connecting block and the clamping block to move downward.

[0010] As a preferred technical solution of the utility model, a mounting block is fixedly connected to the rear side of the upper surface of the friction coefficient tester, a sliding groove is opened in the middle of the front surface of the mounting block, and a movable block is movably connected to the middle of the inner surface of the sliding groove.

[0011] As a preferred technical solution of the utility model, the right surface of the movable block penetrates the mounting block and extends to the right side of the mounting block and is fixedly connected to a connecting plate, the left surface of the movable block is fixedly connected to a pneumatic cylinder, the left end of the pneumatic cylinder penetrates the mounting block and extends to the interior of the mounting block, and the outer surface of the pneumatic cylinder and the inner surface of the mounting block are fixedly socketed.

[0012] As a preferred technical solution of the utility model, a connecting piece is fixedly connected to the front side of the right surface of the connecting plate, a test block is movably sleeved on the inner surface of the connecting piece, and the lower surface of the test block is movably connected to the upper surface of the friction coefficient tester.

[0013] As a preferred technical solution of the utility model, a support block is fixedly connected to the lower surface of the friction coefficient meter, a No. 2 motor is fixedly installed in the middle of the lower surface of the friction coefficient meter, a rotating shaft is fixedly sleeved on the other end of the output shaft of the No. 2 motor, and a gear is fixedly sleeved on the outer surface of the rotating shaft.

[0014] As a preferred technical solution of the utility model, the outer surfaces of the front and rear sides of the gear are meshingly connected with tooth plates, the number of the tooth plates is two, the upper surfaces of the two tooth plates are movably connected to limit blocks, and the lower surface of the limit blocks is fixedly connected to the outer surface of the friction coefficient tester.

[0015] As a preferred technical solution of the utility model, the outer surfaces of the left and right sides of the friction coefficient tester are fixedly connected with limit plates located on the outside of the two tooth plates, and the inner surfaces of the limit plates are movably sleeved with connecting strips. There are two connecting strips, and the outer ends of the two connecting strips are fixedly connected with a closed shell, and the other ends of the two connecting strips are respectively fixedly connected to the outer ends of the two tooth plates.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model sets a limit column, a clamping block, a round shaft, a rotating rod and a connecting rod. When the No. 1 motor is running, the round shaft will drive the rotating rod to start rotating, and the rotation of the rotating rod will drive the connecting rod, so that the connecting rod starts to rotate with the other end of the rotating rod as the axis. At the same time, the other end of the connecting rod will drive the connecting block and the clamping block, so that the clamping block as a whole starts to move downward along the outer surface of the limit column. Finally, the experimental material will be pressed against the upper surface of the friction coefficient tester by the clamping block, thereby avoiding the situation that the experimental material is detached from the fixation during the test.

[0018] 2. The utility model sets gears, tooth plates, limit blocks, connecting strips and closed shells. When the second motor is running, the rotating shaft will drive the gears to start rotating. Due to the meshing between the outer surfaces of the gears and the tooth plates, the two tooth plates will drive the two connecting strips and the two closed shells and start to move towards each other under the limit of the limit blocks and the limit plates. Finally, the two closed shells will contact each other and shield the friction coefficient meter as a whole, thereby avoiding the situation where the friction coefficient meter as a whole is placed in an external environment for a long time, resulting in dust or dirt falling into the inside, which affects the accuracy of the measured data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the bottom of the utility model;

[0022] Figure 3 This is a structural schematic diagram of the connection block of the utility model;

[0023] Figure 4 It is a cross-sectional structural schematic diagram of the pneumatic cylinder of the utility model;

[0024] Figure 5 It is a cross-sectional structural schematic diagram of the side of the utility model;

[0025] Figure 6 It is a schematic cross-sectional structure diagram of the connecting piece of the utility model;

[0026] Figure 7 It is a schematic cross-sectional structure diagram of the limiting plate of the utility model.

[0027] In the figure: 1. Friction coefficient tester; 2. Material baffle plate; 3. Limiting column; 4. Clamping block; 5. No. 1 motor; 6. Round shaft; 7. Rotating rod; 8. Connecting rod; 9. Connecting block; 10. Mounting block; 11. Sliding groove; 12. Movable block; 13. Connecting plate; 14. Pneumatic cylinder; 15. Connecting piece; 16. Test block; 17. Support block; 18. No. 2 motor; 19. Rotating shaft; 20. Gear; 21. Tooth plate; 22. Limiting block; 23. Limiting plate; 24. Connecting strip; 25. Enclosing shell. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 7 As shown, the utility model provides a friction coefficient tester, comprising:

[0030] A friction coefficient measuring instrument 1, a material baffle plate 2 is fixedly connected to the right side of the upper surface of the friction coefficient measuring instrument 1, and a limiting column 3 located on the left side of the material baffle plate 2 is fixedly connected to the upper surface of the friction coefficient measuring instrument 1;

[0031] A pressing block 4, the inner surface of which is movably sleeved on the upper side of the outer surface of the limiting column 3;

[0032] A clamping mechanism, which is arranged on the upper surface of the friction coefficient tester 1;

[0033] Among them, the clamping mechanism includes a No. 1 motor 5, which is fixedly installed on the right side of the upper surface of the friction coefficient tester 1, and the No. 1 motor 5 is located on the right side of the material baffle plate 2. The other end of the output shaft of the No. 1 motor 5 is fixedly sleeved with a round shaft 6, and the outer surface of the round shaft 6 is fixedly sleeved with a rotating rod 7, and the other end of the rotating rod 7 is hinged with a connecting rod 8, and the other end of the connecting rod 8 is hinged with a connecting block 9, the lower surface of the connecting block 9 and the right side of the upper surface of the clamping block 4 are fixedly connected, and the rotation of the rotating rod 7 causes the connecting rod 8 to drive the connecting block 9 and the clamping block 4 to move downward.

[0034] When motor No. 1 5 is running, the circular shaft 6 will drive the rotating rod 7 to start rotating, and the rotation of the rotating rod 7 will drive the connecting rod 8 to start rotating, and the other end of the connecting rod 8 will drive the connecting block 9 and the clamping block 4, so that the clamping block 4 as a whole starts to move downward along the outer surface of the limit column 3.

[0035] The rear side of the upper surface of the friction coefficient tester 1 is fixedly connected with a mounting block 10 , the middle of the front surface of the mounting block 10 is provided with a sliding groove 11 , and the middle of the inner surface of the sliding groove 11 is movably connected with a movable block 12 .

[0036] Due to the design of the sliding groove 11 , the movable block 12 as a whole can move left and right along the inner surface of the sliding groove 11 .

[0037] Among them, the right surface of the movable block 12 passes through the mounting block 10 and extends to the right side of the mounting block 10 and is fixedly connected with a connecting plate 13, the left surface of the movable block 12 is fixedly connected with a pneumatic cylinder 14, the left end of the pneumatic cylinder 14 passes through the mounting block 10 and extends to the inside of the mounting block 10, and the outer surface of the pneumatic cylinder 14 and the inner surface of the mounting block 10 are fixedly socketed.

[0038] When the pneumatic cylinder 14 is in operation, the movable block 12 as a whole moves left and right along the inner surface of the sliding groove 11 .

[0039] A connecting piece 15 is fixedly connected to the front side of the right surface of the connecting plate 13 , a test block 16 is movably sleeved on the inner surface of the connecting piece 15 , and the lower surface of the test block 16 is movably connected to the upper surface of the friction coefficient tester 1 .

[0040] When the connecting piece 15 is pressed against the upper surface of the test material, if the connecting plate 13 starts to move to the left, the test block 16 will move together with the connecting piece 15, and the friction coefficient tester 1 can analyze the tension exerted on the connecting piece 15, thereby obtaining the dynamic friction coefficient and static friction coefficient of the test material.

[0041] Among them, the lower surface of the friction coefficient measuring instrument 1 is fixedly connected with a support block 17, and the middle part of the lower surface of the friction coefficient measuring instrument 1 is fixedly installed with a No. 2 motor 18. The other end of the output shaft of the No. 2 motor 18 is fixedly sleeved with a rotating shaft 19, and the outer surface of the rotating shaft 19 is fixedly sleeved with a gear 20.

[0042] When the second motor 18 is running, the rotating shaft 19 and the gear 20 will start to rotate.

[0043] Among them, the outer surfaces of the front and rear sides of the gear 20 are meshed and connected with tooth plates 21, there are two tooth plates 21, the upper surfaces of the two tooth plates 21 are movably connected with limit blocks 22, and the lower surfaces of the limit blocks 22 are fixedly connected to the outer surface of the friction coefficient tester 1.

[0044] When the gear 20 starts to rotate, the two tooth plates 21 start to move towards each other under the limit of the limit block 22 .

[0045] Among them, the outer surfaces of the left and right sides of the friction coefficient tester 1 are fixedly connected with limit plates 23 located on the outside of the two tooth plates 21, and the inner surface of the limit plate 23 is movably sleeved with a connecting strip 24. There are two connecting strips 24, and the outer ends of the two connecting strips 24 are fixedly connected with a closed shell 25. The other ends of the two connecting strips 24 are fixedly connected to the outer ends of the two tooth plates 21 respectively.

[0046] When the two tooth plates 21 start to move, the two connecting strips 24 will drive the two sealing shells 25 to move toward each other under the limitation of the limiting plate 23, and finally the two sealing shells 25 will cover the friction coefficient tester 1 as a whole.

[0047] The working principle and use process of this utility model:

[0048] First, the operator places the experimental material under the clamping block 4 and then starts the motor 5. The operation of the motor 5 will cause the circular shaft 6 to start rotating, and the rotation of the circular shaft 6 will drive the rotating rod 7 to rotate. At the same time, the other end of the rotating rod 7 will drive the connecting rod 8 to make the connecting rod 8 start to rotate with the other end of the rotating rod 7 as the axis. At the same time, the other end of the connecting rod 8 will drive the connecting block 9, so that the connecting block 9 and the clamping block 4 start to move downward along the inner surface of the limit column 3. Finally, the clamping block 4 will press the experimental material so that the experimental material is fixed on the upper surface of the friction coefficient tester 1.

[0049] Then, the operator places the test block 16 above the experimental material and starts the friction coefficient meter 1 and the pneumatic cylinder 14. As the pneumatic cylinder 14 runs, the movable block 12 and the connecting plate 13 as a whole will begin to move to the left along the inner surface of the sliding groove 11. At the same time, the test block 16 will begin to move on the upper surface of the experimental material under the pull of the connecting piece 15. During this process, the friction coefficient meter 1 will read the tension exerted on the connecting piece 15 and perform calculations to obtain the dynamic and static friction coefficients of the upper surface of the experimental material.

[0050] When the operator completes the measurement experiment, the operator starts the No. 2 motor 18. The operation of the No. 2 motor 18 will cause the rotating shaft 19 and the gear 20 to start rotating. Due to the meshing connection between the gear 20 and the outer surface of the tooth plate 21, the two tooth plates 21 will move toward each other driven by the gear 20 and the limit of the limit block 22. The movement of the two tooth plates 21 will drive the two connecting strips 24, so that the two connecting strips 24 and the two closed shells 25 start to move toward each other under the limit of the limit plate 23. Finally, the two closed shells 25 will cover the friction coefficient meter 1 as a whole, thereby avoiding the situation where the friction coefficient meter 1 as a whole has inaccurate measurement results due to the influence of dust after being placed for a long time.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction coefficient tester, characterized in that: Included are: A friction coefficient measuring instrument (1), wherein a material baffle plate (2) is fixedly connected to the right side of the upper surface of the friction coefficient measuring instrument (1), and a limiting column (3) located on the left side of the material baffle plate (2) is fixedly connected to the upper surface of the friction coefficient measuring instrument (1); A pressing block (4), the inner surface of the pressing block (4) being movably sleeved on the upper side of the outer surface of the limiting column (3); A clamping mechanism, the clamping mechanism being arranged on the upper surface of the friction coefficient measuring instrument (1); The clamping mechanism comprises a No. 1 motor (5), the No. 1 motor (5) is fixedly mounted on the right side of the upper surface of the friction coefficient measuring instrument (1), the No. 1 motor (5) is located on the right side of the material blocking plate (2), the other end of the output shaft of the No. 1 motor (5) is fixedly sleeved with a round shaft (6), the outer surface of the round shaft (6) is fixedly sleeved with a rotating rod (7), the other end of the rotating rod (7) is hinged with a connecting rod (8), the other end of the connecting rod (8) is hinged with a connecting block (9), the lower surface of the connecting block (9) is fixedly connected to the right side of the upper surface of the clamping block (4), and the rotating rod (7) rotates to cause the connecting rod (8) to drive the connecting block (9) and the clamping block (4) to move downward.

2. A friction coefficient tester according to claim 1, characterized in that: A mounting block (10) is fixedly connected to the rear side of the upper surface of the friction coefficient tester (1), a sliding groove (11) is provided in the middle of the front surface of the mounting block (10), and a movable block (12) is movably connected to the middle of the inner surface of the sliding groove (11).

3. A friction coefficient tester according to claim 2, characterized in that: The right surface of the movable block (12) passes through the mounting block (10) and extends to the right side of the mounting block (10) and is fixedly connected to a connecting plate (13); the left surface of the movable block (12) is fixedly connected to a pneumatic cylinder (14); the left end of the pneumatic cylinder (14) passes through the mounting block (10) and extends to the inside of the mounting block (10); the outer surface of the pneumatic cylinder (14) and the inner surface of the mounting block (10) are fixedly sleeved.

4. A friction coefficient tester according to claim 3, characterized in that: A connecting piece (15) is fixedly connected to the front side of the right surface of the connecting plate (13), a test block (16) is movably sleeved on the inner surface of the connecting piece (15), and a lower surface of the test block (16) is movably connected to an upper surface of the friction coefficient tester (1).

5. A friction coefficient tester according to claim 1, characterized in that: A support block (17) is fixedly connected to the lower surface of the friction coefficient measuring instrument (1), a second motor (18) is fixedly installed in the middle of the lower surface of the friction coefficient measuring instrument (1), a rotating shaft (19) is fixedly sleeved on the other end of the output shaft of the second motor (18), and a gear (20) is fixedly sleeved on the outer surface of the rotating shaft (19).

6. A friction coefficient tester according to claim 5, characterized in that: The outer surfaces of the front and rear sides of the gear (20) are meshedly connected with tooth plates (21), the number of the tooth plates (21) is two, the upper surfaces of the two tooth plates (21) are movably connected to limit blocks (22), and the lower surfaces of the limit blocks (22) are fixedly connected to the outer surface of the friction coefficient tester (1).

7. A friction coefficient tester according to claim 1, characterized in that: The outer surfaces of the left and right sides of the friction coefficient tester (1) are fixedly connected to limit plates (23) located outside the two tooth plates (21), and the inner surface of the limit plate (23) is movably sleeved with a connecting strip (24), the number of the connecting strips (24) is two, the outer ends of the two connecting strips (24) are fixedly connected to a closed shell (25), and the other ends of the two connecting strips (24) are respectively fixedly connected to the outer ends of the two tooth plates (21).

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