Automatic sand equivalent tester

Abstract

The invention relates to the technical field of sandstone testing, and discloses an automatic sand equivalent tester which comprises a test bed, a vibration excitation mechanism is arranged at the top of the test bed, a clamping piece is installed at the top of the vibration excitation mechanism, a clamping piece is fixedly installed at the top of the clamping piece, and a fixing piece is fixedly installed at the top end of the clamping piece; according to the technical scheme, a test cylinder is inserted into a clamping piece, the middle of the test cylinder is fixed through the clamping piece, then an electric push rod is retracted to adjust two sets of limiting circular plates to the two ends of the test cylinder, a double-head motor is started to drive two sets of screws to rotate, and the two sets of limiting circular plates are adjusted to abut against the two ends of the test cylinder; then the excitation mechanism drives the test barrel in the clamping piece to vibrate, and then the content of cohesive soil or impurities contained in the materials in the test barrel is detected, so that the possibility that the materials in the test barrel are scattered from the two ends of the test barrel in the vibration process is greatly reduced, and the practicability during use is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sand and gravel testing, in particular to an automatic sand equivalent tester. Background Art

[0002] The sand equivalent tester is suitable for asphalt mixture and cement concrete. It uses natural sand, artificial sand, stone chips, and the maximum aggregate size does not exceed 4.75mm. It measures the content of clay or impurities in fine aggregate to evaluate the cleanliness of the aggregate.

[0003] In the patent document with the published announcement number CN208833755U, a fully automatic sand equivalent tester is disclosed, including: a shell, the upper surface of the shell is formed as a horizontal workbench, and a chamber is defined in the shell; a power supply, the power supply is arranged in the chamber; an excitation component, the excitation component is arranged in the chamber and at least a part extends out of the horizontal workbench, the excitation component is connected to the power supply, and the part of the excitation component extending out of the horizontal workbench is formed with a clamping member for clamping a test tube; a timer, the timer is arranged in the chamber and connected to the excitation component; a controller, the controller is arranged in the chamber and connected to the timer, the controller can receive the time signal of the timer and control the excitation component to stop working when the time signal received from the timer is zero; according to the fully automatic sand equivalent tester of the embodiment of the present invention, the vibration intensity is moderate, the vibration speed is uniform, and the vibration time is controlled by the timer, which reduces human errors and improves the efficiency and accuracy of the sand equivalent test.

[0004] In actual use, the above device clamps the middle part of the test tube through the clamping part. During the oscillation process, if the fixing parts at the end of the test tube, such as the fixing plug, are not fixed properly, the material inside the test tube will be spilled under the action of the oscillation, and it is very troublesome to clean it up. The practicality needs to be improved. For this reason, the present application provides an automatic sand equivalent tester. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic sand equivalent tester to solve the problems raised in the background technology.

[0006] An embodiment of the present application provides an automatic sand equivalent tester, including a test bench, wherein a vibration mechanism is provided on the top of the test bench, a clamping member is installed on the top of the vibration mechanism, a clamping member is fixedly installed on the top of the clamping member, a fixing member is fixedly installed on the top of the clamping member, an electric push rod is fixedly installed on the top of the fixing member, a rectangular block is fixedly installed on the telescopic end of the electric push rod, a double-headed motor is fixedly installed on the top of the rectangular block, two groups of output ends of the double-headed motor are fixedly installed with screws, and the ends of the two groups of screws away from the double-headed motor are rotatably installed with limit blocks, a guide mechanism is provided at the bottom of the limit block, a connecting rod is provided below the moving block, and a limiting circular plate is fixedly installed on the bottom of the connecting rod.

[0007] By adopting the above technical scheme, the test tube is inserted into the interior of the clamping part, the middle part of the test tube is fixed by the clamping part, and then the electric push rod is retracted to adjust the two sets of limit circular plates to the two ends of the test tube, and the double-headed motor is started to drive the two sets of screws to rotate, and the two sets of limit circular plates are adjusted to conflict with the two ends of the test tube, and then the test tube inside the clamping part is driven by the excitation mechanism to vibrate, and then the content of clay or impurities contained in the material inside the test tube is detected, thereby greatly reducing the possibility of the material inside the test tube spilling from the two ends of the test tube during the oscillation process, and improving the practicality during use.

[0008] Optionally, the excitation mechanism includes an exciter, which is fixedly installed inside the test bench, an oscillation arm is movably connected to the top of the test bench, and the bottom of the oscillation arm is fixedly installed on the output end of the exciter, a fixed seat is fixedly installed on the top of the oscillation arm, and the top of the fixed seat is fixedly installed on the bottom of the clamp.

[0009] By adopting the above technical solution, when the vibrator is started, the vibration is transmitted to the test tube inside the clamp through the oscillation arm, so that the test sample in the test tube vibrates. The vibration amplitude of the vibrator can be 200mm-205mm, preferably 203mm, and the vibration frequency can be 170-190 times / minute, preferably 180 times / minute. The vibration intensity of the vibrator is moderate and the vibration speed is uniform, which is conducive to improving the efficiency of the sand equivalent test.

[0010] Optionally, the guide mechanism includes a guide block, which is fixedly mounted on the bottom end of the movable block, and the bottom end of the guide block is fixedly mounted on the top end of the connecting rod. The bottom of the limit block is located below the screw and is fixedly mounted with a guide rod, and one end of the guide rod passes through the interior of the guide block and is fixedly mounted on one side of the rectangular block.

[0011] By adopting the above technical solution, the guide block is driven to move on the outer surface of the guide rod during the movement of the moving block on the outer surface of the screw. At the same time, the guide block guides the moving block, thereby improving the guidance of the moving block during movement.

[0012] Optionally, a time regulator is fixedly mounted on the outer surface of the test bench, a controller is fixedly mounted on the outer surface of the test bench on one side of the time regulator, and the controller is electrically connected to the time regulator, and the controller is electrically connected to the exciter.

[0013] By adopting the above technical solution, after the working time of the vibrator is adjusted by the time regulator, the controller controls the switch of the vibrator, which is conducive to automatically controlling the vibration time of the vibrator.

[0014] Optionally, the opposing surfaces of the two groups of limiting circular plates are fixedly mounted.

[0015] By adopting the above technical solution, when the limiting circular plate contacts the two ends of the test tube, the protection effect on the two ends of the test tube is increased.

[0016] Optionally, a display screen is fixedly mounted on a side of the time adjuster away from the controller, the display screen is fixedly mounted on an outer surface of the test bench, the display screen is electrically connected to the time adjuster, a switch is fixedly mounted on the outer surface of the test bench on one side of the display screen, and the display screen is electrically connected to the exciter.

[0017] By adopting the above technical solution, it is convenient to observe the adjustment of the time regulator through the display screen, and it is convenient to switch the exciter through the switch.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] 1. The technical solution of the present application is to insert the test tube into the interior of the clamping part, fix the middle part of the test tube by the clamping part, then retract the electric push rod to adjust the two sets of limit circular plates to the two ends of the test tube, start the double-headed motor to drive the two sets of screws to rotate, adjust the two sets of limit circular plates to conflict with the two ends of the test tube, and then drive the test tube inside the clamping part to vibrate by the excitation mechanism, and then detect the content of clay or impurities contained in the material inside the test tube, thereby greatly reducing the possibility of the material inside the test tube spilling from the two ends of the test tube during the oscillation process, thereby improving the practicality during use.

[0020] 2. When the moving block moves on the outer surface of the screw, the guide block is driven to move on the outer surface of the guide rod. At the same time, the guide block guides the moving block, thereby improving the guiding performance of the moving block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the enlarged structure of the clamping structure at both ends of the test tube;

[0024] Figure 3 It is a schematic diagram of the side structure of the clamping at both ends of the test tube.

[0025] In the figure: 1. test bench; 3. oscillating arm; 4. fixing seat; 5. clamping piece; 7. clamping piece; 9. fixing piece; 10. electric push rod; 11. rectangular block; 12. double-headed motor; 13. screw; 14. limit block; 15. moving block; 16. guide block; 17. connecting rod; 18. guide rod; 19. limit circular plate; 20. time adjuster; 21. controller; 22. rubber cushion; 23. display screen; 24. switch. DETAILED DESCRIPTION

[0026] See also Figure 1-3 The present invention provides a technical solution: it includes a test bench 1, a vibration excitation mechanism is arranged on the top of the test bench 1, a clamping member 5 is installed on the top of the vibration excitation mechanism, a clamping member 7 is fixedly installed on the top of the clamping member 5, a fixing member 9 is fixedly installed on the top of the fixing member 9, an electric push rod 10 is fixedly installed on the top of the fixing member 9, a rectangular block 11 is fixedly installed on the telescopic end of the electric push rod 10, a double-headed motor 12 is fixedly installed on the top of the rectangular block 11, two groups of output ends of the double-headed motor 12 are fixedly installed with screws 13, and one end of the two groups of screws 13 away from the double-headed motor 12 is rotatably installed with a limit block 14, a guide mechanism is arranged at the bottom of the limit block 14, a connecting rod 17 is arranged below the moving block 15, and a limit circular plate 19 is fixedly installed at the bottom of the connecting rod 17.

[0027] In this technical solution, the test tube is inserted into the interior of the clamping member 5, the middle of the test tube is fixed by the clamping member 7, and then the electric push rod 10 is retracted to adjust the two sets of limit circular plates 19 to the two ends of the test tube, and the double-headed motor 12 is started to drive the two sets of screws 13 to rotate, and the two sets of limit circular plates 19 are adjusted to conflict with the two ends of the test tube, and then the test tube inside the clamping member 5 is driven by the excitation mechanism to vibrate, and then the content of clay or impurities in the material inside the test tube is detected, thereby greatly reducing the possibility of the material inside the test tube spilling from the two ends of the test tube during the oscillation process, thereby improving the practicality during use.

[0028] In some technical solutions, such as Figure 1As shown, the excitation mechanism includes an exciter, which is fixedly installed inside the test bench 1, an oscillation arm 3 is movably connected to the top of the test bench 1, and the bottom of the oscillation arm 3 is fixedly installed on the output end of the exciter, a fixed seat 4 is fixedly installed on the top of the oscillation arm 3, and the top of the fixed seat 4 is fixedly installed on the bottom of the clamp 5.

[0029] When in use, when the vibrator is started, the vibration is transmitted to the test tube inside the clamp 5 through the oscillation arm 3, so that the test sample in the test tube vibrates. The vibration amplitude of the vibrator can be 200mm-205mm, preferably 203mm, and the vibration frequency can be 170-190 times / minute, preferably 180 times / minute. The vibration intensity of the vibrator is moderate and the vibration speed is uniform, which is conducive to improving the efficiency of the sand equivalent test.

[0030] In some technical solutions, such as Figure 1 As shown, the guide mechanism includes a guide block 16, which is fixedly mounted on the bottom end of the moving block 15, and the bottom end of the guide block 16 is fixedly mounted on the top end of the connecting rod 17. The bottom of the limit block 14 is located below the screw 13 and is fixedly mounted with a guide rod 18. One end of the guide rod 18 passes through the interior of the guide block 16 and is fixedly mounted on one side of the rectangular block 11.

[0031] When in use, the moving block 15 moves on the outer surface of the screw rod 13, driving the guide block 16 to move on the outer surface of the guide rod 18. At the same time, the guide block 16 guides the moving block 15, thereby improving the guiding performance of the moving block 15 when moving.

[0032] In some technical solutions, such as Figure 1 As shown, a time regulator 20 is fixedly installed on the outer surface of the test bench 1, a controller 21 is fixedly installed on the outer surface of the test bench 1 on one side of the time regulator 20, and the controller 21 is electrically connected to the time regulator 20, and the controller 21 is electrically connected to the exciter.

[0033] When in use, after the working time of the vibrator is adjusted by the time regulator 20, the controller 21 controls the switch of the vibrator, thereby facilitating automatic control of the vibration time of the vibrator.

[0034] In some technical solutions, such as Figure 2 As shown, rubber pads 22 are fixedly mounted on the opposite surfaces of the two sets of limiting circular plates 19.

[0035] When in use, when the limiting circular plate 19 contacts the two ends of the test tube, the rubber cushion 22 increases the protection effect on the two ends of the test tube.

[0036] In some technical solutions, such as Figure 1As shown, a display screen 23 is fixedly installed on the side of the time regulator 20 away from the controller 21, the display screen 23 is fixedly installed on the outer surface of the test bench 1, the display screen 23 is electrically connected to the time regulator 20, a switch 24 is fixedly installed on the outer surface of the test bench 1 on one side of the display screen 23, and the display screen 23 is electrically connected to the exciter.

[0037] When in use, the display screen 23 is used to observe the adjustment of the time adjuster 20, and the switch 24 is used to switch the exciter.

[0038] Working principle: by inserting the test tube into the inside of the clamping part 5, fixing the middle part of the test tube by the clamping part 7, then retracting the electric push rod 10 to adjust the two sets of limit circular plates 19 to the two ends of the test tube, starting the double-headed motor 12 to drive the two sets of screws 13 to rotate, adjusting the two sets of limit circular plates 19 to conflict with the two ends of the test tube, and then the exciting mechanism drives the test tube inside the clamping part 5 to vibrate, and then the content of clay or impurities contained in the material inside the test tube is detected, thereby greatly reducing the possibility of the material inside the test tube spilling from both ends of the test tube during the oscillation process, and improving the practicality during use. When the exciter is started, the vibration is transmitted to the test tube inside the clamping part 5 through the oscillation arm 3, so that the test sample to be tested in the test tube vibrates. The vibration amplitude of the exciter can be 200mm-205mm, preferably 203mm, and the vibration The frequency can be 170-190 times / minute, preferably 180 times / minute. The vibration intensity of the vibrator is moderate and the vibration speed is uniform, which is beneficial to improving the efficiency of the sand equivalent test. During the movement of the moving block 15 on the outer surface of the screw 13, the guide block 16 is driven to move on the outer surface of the guide rod 18. At the same time, the guide block 16 guides the moving block 15, thereby improving the guidance of the moving block 15 during movement. After the working time of the vibrator is adjusted by the time regulator 20, the controller 21 controls the switch of the vibrator, which is beneficial to automatically control the vibration time of the vibrator. When the limit circular plate 19 contacts the two ends of the test tube, the rubber pad 22 increases the protection effect on the two ends of the test tube. The display screen 23 is used to observe the adjustment of the time regulator 20, and the switch 24 is used to switch the vibrator.

Claims

1. An automatic sand equivalent tester, comprising a test bench (1), characterized in that: The top of the test bench (1) is provided with an excitation mechanism, the top of the excitation mechanism is installed with a clamping member (5), the top of the clamping member (5) is fixedly installed with a clamping member (7), the top of the clamping member (7) is fixedly installed with a fixing member (9), the top of the fixing member (9) is fixedly installed with an electric push rod (10), the telescopic end of the electric push rod (10) is fixedly installed with a rectangular block (11), the top of the rectangular block (11) is fixedly installed with a double-headed motor (12), the two groups of output ends of the double-headed motor (12) are fixedly installed with screws (13), the ends of the two groups of screws (13) away from the double-headed motor (12) are rotatably installed with a limit block (14), the bottom of the limit block (14) is provided with a guide mechanism, a connecting rod (17) is provided below the moving block (15), and a limiting circular plate (19) is fixedly installed at the bottom of the connecting rod (17).

2. The automatic sand equivalent tester according to claim 1, characterized in that: The excitation mechanism comprises an exciter, which is fixedly mounted inside the test bench (1); an oscillation arm (3) is movably connected to the top of the test bench (1), and the bottom of the oscillation arm (3) is fixedly mounted on the output end of the exciter; a fixing seat (4) is fixedly mounted on the top of the oscillation arm (3), and the top of the fixing seat (4) is fixedly mounted on the bottom of the clamp (5).

3. The automatic sand equivalent tester according to claim 1, characterized in that: The guide mechanism comprises a guide block (16), wherein the guide block (16) is fixedly mounted on the bottom end of the moving block (15), and the bottom end of the guide block (16) is fixedly mounted on the top end of the connecting rod (17). The bottom of the limit block (14) is located below the screw rod (13) and is fixedly mounted with a guide rod (18). One end of the guide rod (18) passes through the interior of the guide block (16) and is fixedly mounted on one side of the rectangular block (11).

4. The automatic sand equivalent tester according to claim 1, characterized in that: A time regulator (20) is fixedly mounted on the outer surface of the test bench (1), a controller (21) is fixedly mounted on the outer surface of the test bench (1) on one side of the time regulator (20), and the controller (21) is electrically connected to the time regulator (20), and the controller (21) is electrically connected to the exciter.

5. The automatic sand equivalent tester according to claim 1, characterized in that: The opposite surfaces of the two groups of limiting circular plates (19) are fixedly mounted with rubber cushions (22).

6. The automatic sand equivalent tester according to claim 4, characterized in that: A display screen (23) is fixedly mounted on a side of the time regulator (20) away from the controller (21); the display screen (23) is fixedly mounted on an outer surface of the test bench (1); the display screen (23) is electrically connected to the time regulator (20); a switch (24) is fixedly mounted on an outer surface of the test bench (1) on one side of the display screen (23); and the display screen (23) is electrically connected to the exciter.

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