Abrasion test equipment

Abstract

The utility model relates to abrasion testing equipment which comprises a bottom plate, a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate are fixed on the bottom plate, a rotating motor is fixed on one side of the first supporting plate, the output end of the rotating motor penetrates through the first supporting plate and is fixedly provided with a rotating disc, and an asphalt testing piece is placed on the side, away from the motor, of the rotating disc. The second supporting plate and the third supporting plate are both provided with laser range finders which are oppositely arranged on the left side and the right side relative to the asphalt test piece, two wheel carriers are installed on the fourth supporting plate, abrasion wheels are rotationally connected to the wheel carriers, one abrasion wheel makes contact with the left side face of the asphalt test piece, and the other abrasion wheel makes contact with the right side face of the asphalt test piece; according to the utility model, the two abrasion wheels are arranged, so that the two surfaces of the asphalt test piece can be simultaneously subjected to abrasion test, the average abrasion value of the two surfaces is calculated, the deviation of the abrasion value is reduced, and the test error is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt detection, in particular to a wear testing device. Background Art

[0002] In order to ensure that the asphalt mixture has sufficient anti-wear performance, it is necessary to check whether the anti-wear performance of the asphalt mixture meets the standard requirements when selecting materials. When the asphalt mixture is currently subjected to abrasion testing, a turntable is usually used to drive the asphalt test piece to rotate, and then a wear wheel is used to contact one side of the asphalt test piece. The rotation of the asphalt test piece can drive the wear wheel to rotate, thereby simulating the friction between the tire and the road surface. At this time, the asphalt test piece produces wear grooves under the friction of the wear wheel, and the depth of the wear grooves is measured using a laser rangefinder. Finally, the processor uses the measured depth data to calculate the wear value.

[0003] However, when testing the asphalt test piece, only one surface is tested for wear, which easily leads to a large deviation in the wear value tested and a large test error. Utility Model Content

[0004] The purpose of the utility model is to design a wear testing device so as to solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A wear testing device comprises a base plate, on which a first support plate, a second support plate, a third support plate and a fourth support plate are fixed, a rotating motor is fixed to one side of the first support plate, an output end of the rotating motor passes through the first support plate and is fixed to a turntable, an asphalt test piece is placed on the side of the turntable away from the motor, laser rangefinders arranged opposite to each other with respect to the asphalt test piece are installed on the second support plate and the third support plate, two wheel frames are installed on the fourth support plate, wear wheels are rotatably connected to the wheel frames, one of the wear wheels contacts the left side of the asphalt test piece, and the other wear wheel contacts the right side of the asphalt test piece.

[0007] Furthermore, a transmission frame is fixed on the fourth support plate, a screw is rotatably connected to the transmission frame, a servo motor is fixed on the transmission frame, the output end of the servo motor is fixedly connected to the screw, two slides are installed on the screw, and the two wheel frames are respectively installed on the two slides, one of the slides is provided with a left-handed threaded hole matching with the screw thread, and the other slide is provided with a right-handed threaded hole matching with the screw thread.

[0008] Furthermore, the transmission frame is provided with a first sliding groove, and the slide plate is provided with a first sliding block that slidably cooperates with the first sliding groove.

[0009] Furthermore, two oppositely arranged transverse plates are fixed on the sides of the skateboard, the wheel frame is located between the two transverse plates, a second slide groove is provided on the transverse plate, a second slider slidingly matched with the second slide groove is fixed on the wheel frame, and a spring is connected between the wheel frame and the skateboard.

[0010] Furthermore, a mounting rod is fixed to the middle part of the turntable away from the motor, four positioning rods are distributed circumferentially on the side of the turntable away from the motor, mounting holes corresponding to the mounting rods are provided on the side of the asphalt test piece, positioning holes corresponding to the positioning rods are provided on the side of the asphalt test piece, and a fixing component for pressing the asphalt test piece onto the turntable is installed on the mounting rod.

[0011] Furthermore, the fixing assembly includes a fixing block, the fixing block is provided with a through hole for the mounting rod to pass through, the fixing block is tightly attached to the side of the asphalt test piece away from the motor, the mounting rod is provided with a first connecting hole, the fixing block is provided with a second connecting hole corresponding to the first connecting hole, and the first connecting hole and the second connecting hole are connected by bolts and nuts.

[0012] Furthermore, the base plate is installed with a control screen and a counter, the rotating motor is electrically connected to the counter, and the laser rangefinder, the servo motor and the counter are all electrically connected to the control screen.

[0013] The beneficial effects of the utility model are:

[0014] By setting two wear wheels, one of which contacts the left side of the asphalt test piece and the other contacts the right side of the asphalt test piece, wear tests can be performed on both sides of the asphalt test piece at the same time, and the average wear values ​​of the two sides can be calculated, thereby reducing the deviation of the wear values ​​and reducing the test error. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2It is a structural schematic diagram of another perspective of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the transmission frame in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the turntable in the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the asphalt test piece in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the fixing block in the utility model.

[0022] The names of the components marked in the figure are as follows:

[0023] 1. Bottom plate; 2. First support plate; 3. Second support plate; 4. Third support plate; 5. Fourth support plate; 6. Rotating motor; 7. Turntable; 8. Asphalt test piece; 9. Laser rangefinder; 10. Wheel frame; 11. Wear wheel; 12. Transmission frame; 13. Screw; 14. Servo motor; 15. Slide plate; 16. First slide groove; 17. First slider; 18. Cross plate; 19. Second slide groove; 20. Second slider; 21. Spring; 22. Mounting rod; 23. Positioning rod; 24. Mounting hole; 25. Positioning hole; 26. Fixed block; 27. Through hole; 28. First connecting hole; 29. ​​Second connecting hole; 30. Bolt; 31. Nut; 32. Control panel; 33. Counter. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-6As shown, a wear testing device comprises a base plate 1, on which a first support plate 2, a second support plate 3, a third support plate 4 and a fourth support plate 5 are fixed, a rotating motor 6 is fixed on one side of the first support plate 2, an output end of the rotating motor 6 passes through the first support plate 2 and is fixed with a turntable 7, and the turntable 7 is driven by the rotating motor 6 to rotate; an asphalt test piece 8 is placed on the side of the turntable 7 away from the motor 6, a mounting rod 22 is fixed to the middle of the side of the turntable 7 away from the motor 6, and a mounting hole 24 corresponding to the mounting rod 22 is provided on the side of the asphalt test piece 8 for installing the asphalt test piece 8; four positioning rods 23 are distributed circumferentially on the side of the turntable 7 away from the motor 6, and a positioning hole 25 corresponding to the positioning rod 23 is provided on the side of the asphalt test piece 8 for The asphalt test piece 8 is positioned; a fixing block 26 is closely attached to the side of the asphalt test piece 8 away from the motor 6, and a through hole 27 is provided on the fixing block 26 for the mounting rod 22 to pass through, and the asphalt tester 8 is pressed against the turntable 7 by the fixing block 26; a first connecting hole 28 is provided on the mounting rod 22, and a second connecting hole 29 corresponding to the first connecting hole 28 is provided on the fixing block 26, and the first connecting hole 28 and the second connecting hole 29 are connected by bolts 30 and nuts 31, so as to facilitate the disassembly or installation of the fixing block 26, thereby facilitating the disassembly or installation of the asphalt test piece 8; laser rangefinders 9 arranged relatively to the left and right of the asphalt test piece 8 are installed on the second support plate 3 and the third support plate 4, and the wear groove depth of the asphalt test piece 8 is measured by the laser rangefinder 9;

[0026] A transmission frame 12 is fixed on the fourth supporting plate 5, and a screw rod 13 is rotatably connected to the rotating frame 12. A servo motor 14 is fixed on the rotating frame 12, and the output end of the servo motor 14 is fixedly connected to the screw rod 13, and the screw rod 13 is driven to rotate by the servo motor 14; two slide plates 15 are installed on the screw rod 13, one of which is provided with a left-handed threaded hole that matches the thread of the screw rod 13, and the other slide plate 15 is provided with a right-handed threaded hole that matches the thread of the screw rod 13. The two slide plates 15 can be moved in a direction close to or away from each other through the rotation of the screw rod 13; a first slide groove 16 is provided on the transmission frame 12, and a first slider 17 that slidably matches the first slide groove 16 is provided on the slide plate 15, so that the slide plate 15 can only slide along the length direction of the first slide groove 16 to prevent the slide plate 15 from rotating with the screw rod 13; two oppositely arranged transverse plates 18 are fixed on the side of the slide plate 15, and there is a gap between the two transverse plates 18 A wheel frame 10 is provided, on which a wear wheel 11 is rotatably connected, a second slide groove 19 is provided on the cross plate 18, and a second slider 20 slidingly matched with the second slide groove 19 is fixed on the wheel frame 10, so that the wheel frame 10 can move in a direction close to or away from the slide plate 15; a spring 21 is connected between the wheel frame 10 and the slide plate 15, and the spring 21 is compressed by the wheel frame 10 and the slide plate 15, giving the spring 21 a preload force, so that during the wear test, the wear wheel 11 is always in close contact with the bottom of the wear groove on the asphalt test piece 8 under the action of the elastic restoring force of the spring 21, thereby further improving the test accuracy; one of the wear wheels 11 is in contact with the left side of the asphalt test piece 8, and the other wear wheel 11 is in contact with the right side of the asphalt test piece 8, so that the wear test can be performed on the two surfaces of the asphalt test piece 8 at the same time, and the average wear value of the two surfaces is calculated, the deviation of the wear value is reduced, and the test error is reduced;

[0027] The base plate 1 is installed with a control panel 32 and a counter 33 , the rotary motor 6 is electrically connected to the counter 33 , and the laser rangefinder 9 , the servo motor 14 and the counter 33 are all electrically connected to the control panel 32 .

[0028] Working principle:

[0029] like Figure 1-6 As shown, when the wear test device is used, the asphalt test piece 8 is first passed through the mounting rod 22 and the positioning rod 23 and is pressed against the turntable 7, and then the fixing block 26 is passed through the mounting rod 22 and the asphalt test piece 8 is pressed against the turntable 7, and then the bolt 29 is passed through the first connecting hole 27 and the second connecting hole 28 and connected with the nut 30, so that the asphalt test piece 8 is fixed on the turntable 7;

[0030] Then, the servo motor 14 is started by the control panel 32, and the servo motor 14 drives the screw 13 to rotate, so that the two slide plates 15 move in the direction of approaching each other, thereby driving the two wear wheels 11 to contact the left and right sides of the asphalt test piece 8 respectively, and the spring 21 is compressed by the wheel frame 10 and the slide plate 15, giving the spring 21 a preload, so that during the wear test, the wear wheel 11 is always in close contact with the bottom of the wear groove on the asphalt test piece 8 under the action of the elastic restoring force of the spring 21. The control panel 32 controls the servo motor 14 to stop, and then the control panel 32 controls the rotary motor 6 to rotate , start the wear test on the asphalt test piece 8, the timer 3 will record the number of rotations of the rotary motor 6 and feed the data back to the control screen 32, when the number of rotations of the rotary motor 6 reaches the number set by the control screen 32, the control screen 32 controls the rotary motor 6 to stop and controls the laser rangefinder 9 to start, at this time, wear grooves are left on the left and right sides of the asphalt test piece 8, the two laser rangefinders 9 respectively measure the depth of the two wear grooves and feed the depth data back to the control screen 32, finally, the processor in the control screen 32 uses the measured depth data to calculate the average wear value of the left and right sides of the asphalt test piece 8 respectively.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A wear testing device, characterized in that: The invention comprises a bottom plate (1), a first support plate (2), a second support plate (3), a third support plate (4) and a fourth support plate (5) are fixed on the bottom plate (1), a rotating motor (6) is fixed on one side of the first support plate (2), an output end of the rotating motor (6) passes through the first support plate (2) and is fixed with a turntable (7), an asphalt test piece (8) is placed on the side of the turntable (7) away from the motor (6), laser rangefinders (9) arranged opposite to the asphalt test piece (8) are installed on the second support plate (3) and the third support plate (4), and two wheel frames (10) are installed on the fourth support plate (5), and a wear wheel (11) is rotatably connected to the wheel frame (10), one of the wear wheels (11) contacts the left side of the asphalt test piece (8), and the other wear wheel (11) contacts the right side of the asphalt test piece (8).

2. The wear testing device according to claim 1, characterized in that: A transmission frame (12) is fixed on the fourth support plate (5), a screw rod (13) is rotatably connected to the transmission frame (12), a servo motor (14) is fixed on the transmission frame (12), an output end of the servo motor (14) is fixedly connected to the screw rod (13), two slide plates (15) are installed on the screw rod (13), and the two wheel frames (10) are respectively installed on the two slide plates (15), one of the slide plates (15) is provided with a left-handed threaded hole that is threadably matched with the screw rod (13), and the other slide plate (15) is provided with a right-handed threaded hole that is threadably matched with the screw rod (13).

3. The wear testing device according to claim 2, characterized in that: The transmission frame (12) is provided with a first sliding groove (16), and the slide plate (15) is provided with a first sliding block (17) which is slidably matched with the first sliding groove (16).

4. The wear testing device according to claim 2, characterized in that: Two oppositely arranged transverse plates (18) are fixed on the side of the slide plate (15); the wheel frame (10) is located between the two transverse plates (18); a second slide groove (19) is provided on the transverse plate (18); a second sliding block (20) slidably matched with the second slide groove (19) is fixed on the wheel frame (10); and a spring (21) is connected between the wheel frame (10) and the slide plate (15).

5. The wear testing device according to claim 1, characterized in that: A mounting rod (22) is fixed to the middle of the side of the turntable (7) away from the motor (6), four positioning rods (23) are distributed circumferentially on the side of the turntable (7) away from the motor (6), a mounting hole (24) corresponding to the mounting rod (22) is provided on the side of the asphalt test piece (8), a positioning hole (25) corresponding to the positioning rod (23) is provided on the side of the asphalt test piece (8), and a fixing component for pressing the asphalt test piece (8) onto the turntable (7) is installed on the mounting rod (22).

6. The wear testing device according to claim 5, characterized in that: The fixing assembly comprises a fixing block (26), the fixing block (26) is provided with a through hole (27) for the mounting rod (22) to pass through, the fixing block (26) is in close contact with the side of the asphalt test piece (8) away from the motor (6), the mounting rod (22) is provided with a first connecting hole (28), the fixing block (26) is provided with a second connecting hole (29) corresponding to the first connecting hole (28), and the first connecting hole (28) and the second connecting hole (29) are connected by a bolt (30) and a nut (31).

7. The wear testing device according to claim 1, characterized in that: The base plate (1) is provided with a control panel (32) and a counter (33), the rotary motor (6) is electrically connected to the counter (33), and the laser rangefinder (9), the servo motor (14) and the counter (33) are all electrically connected to the control panel (32).

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