Dry friction material performance testing machine

Abstract

The utility model discloses a dry-type friction material performance testing machine which comprises a base, one end of the base is rotatably connected with an adjustable rotating table, one end of the base far away from the adjustable rotating table is provided with a pair of sliding rails, the position of the base close to the sliding rails is fixedly connected with an installation table, the installation table is provided with a test piece, and the test piece is provided with a plurality of test holes. A friction table is slidably connected into the sliding rail, a connecting rod is rotatably connected to the upper surface of the friction table, an anti-extrusion rack is rotatably connected to the end, away from the friction table, of the connecting rod, and the anti-extrusion rack is in sliding fit with the adjustable rotating table. According to the utility model, the adjustable rotating table is arranged on the base, the driving motor drives the adjustable rotating table to rotate, and the adjustable rotating table drives the friction table to reciprocate through the connecting rod to rub a test piece, so that the friction range can be changed without shutdown, and the test efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of material performance testing devices, in particular to a dry friction material performance testing machine. Background Art

[0002] A dry friction material performance tester is a device specifically designed to test the friction and wear properties of dry friction materials (such as brake pads and clutch plates) under different conditions. These testers are widely used in industries such as automotive, aerospace, and machinery manufacturing to ensure the safety and reliability of friction materials in actual use. Dry friction material performance testers can measure the static and kinetic coefficients of friction under varying loads, speeds, and temperatures, simulating actual operating conditions such as high-speed driving or emergency braking.

[0003] However, during the test, the friction range is relatively fixed and there are requirements for the size of the material. The friction range cannot be adjusted during the test, resulting in thermal decay in the friction-affected parts of the material while other parts remain unaffected, affecting the overall heat dissipation efficiency of the material and causing inaccurate data. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing friction material performance tester needs to be stopped in the test process in order to adjust the friction length, which is inconvenient to use.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a dry friction material performance testing machine, including a base, one end of the base is rotatably connected to an adjustable rotating table, a pair of slide rails are provided at the end of the base away from the adjustable rotating table, the base is fixedly connected to a mounting table at a position close to the slide rails, a test piece is provided on the mounting table, a friction table is slidably connected in the slide rails, a connecting rod is rotatably connected to the upper surface of the friction table, and the connecting rod is rotatably connected to an anti-extrusion rack at the end away from the friction table, and the anti-extrusion rack and the adjustable rotating table slide in cooperation with each other.

[0006] Through the above technical solution, an adjustable rotating table is set on the base, and the adjustable rotating table is driven to rotate by a driving motor. The adjustable rotating table drives the friction table to reciprocate the friction test piece through the connecting rod. The friction range can be changed without stopping the machine, which greatly improves the test efficiency.

[0007] The utility model is further configured such that a control motor is fixedly connected to the base, a screw rod is fixedly connected to the output end of the control motor, a pair of sliding rods are fixedly connected to the base, a drive motor is fixedly connected to the base, and a third gear is fixedly connected to the output end of the drive motor.

[0008] Through the above technical solution, the adjustable rotating table can be driven to rotate and the anti-extrusion rack can be driven to move.

[0009] The present invention is further configured such that the mounting platform includes a lifting seat fixedly connected to the base, the upper end of the lifting seat is fixedly connected to a fixing seat, the upper surface of the fixing seat is provided with a fixing groove, and the test piece is located in the fixing groove.

[0010] Through the above technical solution, the pressure between the test piece and the friction table can be adjusted to change the friction force.

[0011] The utility model is further configured as follows: the adjustable rotating platform includes a rotating seat rotatably connected to the base, a guide sleeve is fixedly connected to the rotating seat, a first gear is rotatably connected through the rotating seat, a threaded rod is threadedly connected through the first gear, and a plurality of fixed rods are fixedly connected in the rotating seat.

[0012] Through the above technical solution, the threaded rod can be used to drive the first gear to rotate, and the first gear can drive the spur rack to move, thereby changing the distance between the cylinder and the center of the rotating circle.

[0013] The utility model is further configured such that one end of several of the fixed rods away from the rotating seat is fixedly connected to a second gear, the second gear and the third gear are meshed with each other, a screw cylinder is threaded through the screw rod, and the screw cylinder and the slide rod are slidably engaged with each other.

[0014] Through the above technical solution, the screw cylinder can be driven to move by the screw rod, and the screw cylinder drives the movable plate to move. When the rotating seat rotates, the movable plate rotates around the screw cylinder without interfering with the position of the screw cylinder.

[0015] The utility model is further configured such that the outer portion of the screw cylinder is rotatably connected to a movable plate, the movable plate is fixedly connected to the threaded rod, and the fixed rod penetrates and slides through the movable plate.

[0016] Through the above technical solution, the threaded rod can be driven to move by the movable plate, thereby driving the first gear to rotate.

[0017] The utility model is further configured such that the anti-extrusion rack includes a straight rack slidably connected in a guide sleeve, a round rod is fixedly connected to the straight rack, and one end of the round rod away from the straight rack is rotatably connected to the connecting rod.

[0018] Through the above technical solution, the connecting rod can be driven to rotate by the round rod, thereby driving the friction table to move on the base.

[0019] The utility model is further configured such that both ends of the spur rack are slidably connected with movable teeth, the end of the movable tooth close to the spur rack is fixedly connected to a guide rod, a spring is provided on the outer sleeve of the guide rod, one end of the spring is fixedly connected to the spur rack, the end of the spring away from the spur rack is fixedly connected to the movable tooth, and the round rod passes through the slidably connected guide sleeve.

[0020] Through the above technical solution, when the spur rack is driven to one end by the first gear, the first gear pushes the movable tooth to move without pushing the spur rack, and when the first gear rotates in the opposite direction, the movable tooth is rebounded by the spring to the position engaged with the first gear, and the movable tooth is driven to move by the first gear. After that, the movable tooth drives the spur rack to move to the position engaged with the first gear through the spring, and the first gear can continue to drive the spur rack to move.

[0021] The beneficial effects of the utility model are as follows:

[0022] 1. The utility model sets an adjustable rotating table on the base, drives the adjustable rotating table to rotate by a driving motor, and the adjustable rotating table drives the friction table to reciprocate the friction test piece through a connecting rod. When the friction range needs to be adjusted, the motor is controlled to drive the screw rod to rotate, the screw rod drives the threaded rod to move, the threaded rod drives the first gear to rotate, the first gear drives the anti-extrusion rack to move, and the anti-extrusion rack drives the round rod to move, thereby changing the rotation center of the round rod to the adjustable rotating table, thereby changing the stroke of the friction table driven by the connecting rod. The friction range can be changed without stopping the machine, which greatly improves the test efficiency.

[0023] 2. The utility model sets an anti-extrusion rack in the adjustable rotating table. When the spur rack is driven to one end by the first gear, the first gear pushes the movable tooth to move without pushing the spur rack. When the first gear rotates in the opposite direction, the movable tooth is rebounded by the spring to a position meshing with the first gear, and the movable tooth is driven to move by the first gear. Thereafter, the movable tooth drives the spur rack to a position meshing with the first gear through the spring, and the first gear can continue to drive the spur rack to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the overall structural diagram of the utility model;

[0025] Figure 2 This is a diagram of the internal structure of the base of the utility model;

[0026] Figure 3 This is a back structural diagram of the utility model;

[0027] Figure 4 This is a structural diagram of the adjustable rotating table of the utility model;

[0028] Figure 5 This is a diagram of the internal structure of the adjustable rotating table of the utility model;

[0029] Figure 6 This is a cross-sectional view of the adjustable rotating table of the utility model;

[0030] Figure 7 This is a cross-sectional view of the anti-extrusion rack of the present utility model.

[0031] In the figure: 1. Base; 2. Slide rail; 3. Mounting table; 31. Lifting seat; 32. Fixed seat; 33. Fixed slot; 4. Test piece; 5. Friction table; 6. Connecting rod; 7. Adjustable rotating table; 71. Rotating seat; 72. Guide sleeve; 73. First gear; 74. Threaded rod; 75. Moving plate; 76. Fixed rod; 77. Screw cylinder; 78. Second gear; 8. Anti-extrusion rack; 81. Straight rack; 82. Round rod; 83. Movable tooth; 84. Guide rod; 85. Spring; 9. Control motor; 10. Drive motor; 11. Third gear; 12. Screw rod; 13. Slide rod. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0033] See also Figure 1 and Figure 2 A dry friction material performance testing machine includes a base 1, a pair of slide rails 2 are opened at one end of the base 1 away from the adjustable rotating table 7, a mounting table 3 is fixedly connected to the position of the base 1 near the slide rails 2, a test piece 4 is arranged on the mounting table 3, a friction table 5 is slidably connected in the slide rails 2, a connecting rod 6 is rotatably connected to the upper surface of the friction table 5, and an anti-extrusion rack 8 and the adjustable rotating table 7 slideably cooperate with each other.

[0034] A control motor 9 is fixedly connected to the base 1, and a screw rod 12 is fixedly connected to the output end of the control motor 9. A pair of slide rods 13 are fixedly connected to the base 1. A drive motor 10 is fixedly connected to the base 1, and a third gear 11 is fixedly connected to the output end of the drive motor 10. The drive motor 10 drives the third gear 11 to rotate, and the third gear 11 drives the second gear 78 to rotate. The second gear 78 drives the rotating seat 71 to rotate through the fixed rod 76.

[0035] The mounting platform 3 includes a lifting seat 31 fixedly connected to the base 1. The upper end of the lifting seat 31 is fixedly connected to a fixing seat 32. The upper surface of the fixing seat 32 is provided with a fixing groove 33. The test piece 4 is located in the fixing groove 33. The test piece 4 is fixed in the fixing groove 33. The height of the fixing seat 32 is adjusted by the lifting seat 31 so that the test piece 4 contacts the friction table 5.

[0036] like Figure 3 、 Figure 4 and Figure 5 As shown, one end of the base 1 is rotatably connected to an adjustable rotating platform 7, and the adjustable rotating platform 7 includes a rotating base 71 rotatably connected to the base 1, a guide sleeve 72 is fixedly connected to the rotating base 71, a first gear 73 is rotatably connected to the rotating base 71, a threaded rod 74 is threadedly connected to the first gear 73, and a plurality of fixed rods 76 are fixedly connected to the rotating base 71.

[0037] The outer rotation of the wire cylinder 77 is connected to the movable plate 75, and the movable plate 75 is fixedly connected to the threaded rod 74. The fixed rod 76 passes through the sliding connection of the movable plate 75. The control motor 9 drives the screw rod 12 to rotate. The screw rod 12 cooperates with the wire cylinder 77 to drive the wire cylinder 77 to move along the slide rod 13. The wire cylinder 77 drives the movable plate 75 to move. The movable plate 75 drives the threaded rod 74 to move along the fixed rod 76. The threaded rod 74 drives the first gear 73 to rotate. The first gear 73 drives the spur rack 81 to move, thereby changing the distance between the round rod 82 and the center of the rotating seat 71.

[0038] like Figure 7 As shown, the end of the connecting rod 6 away from the friction table 5 is rotatably connected to the anti-extrusion rack 8, and the anti-extrusion rack 8 includes a straight rack 81 slidably connected in the guide sleeve 72, and a round rod 82 is fixedly connected to the straight rack 81. The end of the round rod 82 away from the straight rack 81 is rotatably connected to the connecting rod 6.

[0039] Both ends of the spur rack 81 are slidably connected with movable teeth 83. The end of the movable tooth 83 close to the spur rack 81 is fixedly connected to a guide rod 84. A spring 85 is provided on the outer sleeve of the guide rod 84. One end of the spring 85 is fixedly connected to the spur rack 81, and the end of the spring 85 away from the spur rack 81 is fixedly connected to the movable tooth 83. The round rod 82 passes through the sliding connection guide sleeve 72. When the spur rack 81 moves to one end, the first gear 73 drives the movable tooth 83 to continue moving. Since there is a spring 85 between the movable tooth 83 and the spur rack 81, the movable tooth 83 moves repeatedly between engaging and disengaging with the first gear 73 and will not continue to push the spur rack 81, thereby preventing the first gear 73 from continuing to rotate and damaging parts. When the first gear 73 rotates in the opposite direction, the movable tooth 83 pulls the spur rack 81 to move through the spring 85, so that the spur rack 81 is re-engaged with the first gear 73.

[0040] When the present invention is in use, the test piece 4 is fixed in the fixing groove 33, and the height of the fixing seat 32 is adjusted by the lifting seat 31 so that the test piece 4 contacts the friction table 5. Then, the driving motor 10 is started, and the driving motor 10 drives the third gear 11 to rotate, and the third gear 11 drives the second gear 78 to rotate, and the second gear 78 drives the rotating seat 71 to rotate through the fixing rod 76. The rotating seat 71 drives the anti-extrusion rack 8 to rotate through the guide sleeve 72, and the round rod 82 on the anti-extrusion rack 8 drives the connecting rod 6 to rotate, and the connecting rod 6 drives the friction table 5 to reciprocate along the slide rail 2. The pressure between the test piece 4 and the friction table 5 is controlled by the lifting seat 31, so as to test the test piece 4;

[0041] When the friction range needs to be adjusted, it is only necessary to start the control motor 9, which drives the screw rod 12 to rotate. The screw rod 12 cooperates with the screw cylinder 77 to drive the screw cylinder 77 to move along the slide rod 13. The screw cylinder 77 drives the movable plate 75 to move. The movable plate 75 drives the threaded rod 74 to move along the fixed rod 76. The threaded rod 74 drives the first gear 73 to rotate. The first gear 73 drives the spur rack 81 to move, thereby changing the distance between the round rod 82 and the center of the rotating seat 71.

[0042] When the spur rack 81 moves to one end, the first gear 73 drives the movable tooth 83 to continue moving. Since there is a spring 85 between the movable tooth 83 and the spur rack 81, the movable tooth 83 moves repeatedly between engaging and disengaging with the first gear 73, and will not continue to push the spur rack 81, thereby preventing the first gear 73 from continuing to rotate and damaging parts. When the first gear 73 rotates in the opposite direction, the movable tooth 83 pulls the spur rack 81 to move through the spring 85, so that the spur rack 81 is re-engaged with the first gear 73.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dry friction material performance testing machine, comprising a base (1), characterized in that: One end of the base (1) is rotatably connected to an adjustable rotating table (7); a pair of slide rails (2) are provided at one end of the base (1) away from the adjustable rotating table (7); a mounting table (3) is fixedly connected to a position of the base (1) near the slide rails (2); a test piece (4) is provided on the mounting table (3); a friction table (5) is slidably connected in the slide rails (2); a connecting rod (6) is rotatably connected to the upper surface of the friction table (5); an end of the connecting rod (6) away from the friction table (5) is rotatably connected to an anti-extrusion rack (8); the anti-extrusion rack (8) and the adjustable rotating table (7) are slidably matched with each other.

2. A dry friction material performance testing machine according to claim 1, characterized in that: A control motor (9) is fixedly connected to the base (1), an output end of the control motor (9) is fixedly connected to a screw rod (12), a pair of slide rods (13) are fixedly connected to the base (1), a drive motor (10) is fixedly connected to the base (1), and an output end of the drive motor (10) is fixedly connected to a third gear (11).

3. The dry friction material performance testing machine according to claim 1, characterized in that: The mounting platform (3) comprises a lifting seat (31) fixedly connected to the base (1); the upper end of the lifting seat (31) is fixedly connected to a fixing seat (32); a fixing groove (33) is provided on the upper surface of the fixing seat (32); and the test piece (4) is located in the fixing groove (33).

4. A dry friction material performance testing machine according to claim 2, characterized in that: The adjustable rotating platform (7) comprises a rotating seat (71) rotatably connected to the base (1); a guide sleeve (72) is fixedly connected to the rotating seat (71); a first gear (73) is rotatably connected to the rotating seat (71); a threaded rod (74) is threadedly connected to the first gear (73); and a plurality of fixed rods (76) are fixedly connected to the rotating seat (71).

5. A dry friction material performance testing machine according to claim 4, characterized in that: The ends of the plurality of fixed rods (76) away from the rotating seat (71) are fixedly connected to the second gear (78), the second gear (78) and the third gear (11) are meshed with each other, the screw rod (12) is threadedly connected to the screw cylinder (77), and the screw cylinder (77) and the slide rod (13) are slidably engaged with each other.

6. A dry friction material performance testing machine according to claim 5, characterized in that: The screw cylinder (77) is externally rotatably connected to a movable plate (75), the movable plate (75) is fixedly connected to the threaded rod (74), and the fixed rod (76) penetrates and slides through the movable plate (75).

7. The dry friction material performance testing machine according to claim 4, characterized in that: The anti-extrusion rack (8) comprises a straight rack (81) slidably connected in a guide sleeve (72), a round rod (82) is fixedly connected to the straight rack (81), and one end of the round rod (82) away from the straight rack (81) is rotatably connected to the connecting rod (6).

8. The dry friction material performance testing machine according to claim 7, characterized in that: Both ends of the spur rack (81) are slidably connected to movable teeth (83), one end of the movable tooth (83) close to the spur rack (81) is fixedly connected to a guide rod (84), a spring (85) is provided on the outer sleeve of the guide rod (84), one end of the spring (85) is fixedly connected to the spur rack (81), and one end of the spring (85) away from the spur rack (81) is fixedly connected to the movable tooth (83), and the round rod (82) passes through the slidably connected guide sleeve (72).

Images