A testing device and method for the compressive strength of road glass beads

Abstract

The present invention discloses a testing device and method for the compressive performance of glass beads for roads, and relates to the technical field of compressive testing. The device comprises a detection mechanism and a pressure mechanism, wherein the pressure mechanism comprises a plurality of support columns, wherein the plurality of support columns are fixed above a mounting box, a mounting plate is fixed above the plurality of support columns, a hydraulic cylinder is fixed above the mounting plate, a lifting plate is connected to the end of the hydraulic cylinder, two fixed plates are fixed below the lifting plate, baffles are fixed on both sides of the fixed plate, a pressure roller is rotatably arranged between the two fixed plates, the pressure roller is coated with a rubber layer, a rotating motor is fixed on the fixed plate, and the output shaft of the rotating motor is connected to the pressure roller through a coupling. The present invention simulates the force direction of the glass beads for roads when they are actually used by cooperating with the pressure roller and the rubber layer, and at the same time, increases the force area by rubber, is close to the actual application scene, and reduces the measurement error.

Description

Technical Field

[0001] The invention relates to the technical field of compression resistance testing, and in particular to a testing device and method for the compression resistance of road glass beads. Background Art

[0002] At present, the inspection of glass beads mainly focuses on their compressive performance. With the increasing vehicle load and the aggravation of overloading, higher requirements are placed on the compressive strength of glass beads. If the compressive strength is low, it is very easy to be damaged under the rolling of heavy-loaded vehicles, resulting in the incompleteness of glass beads, reducing the roundness of glass beads, affecting the directional reflection of light, and ultimately resulting in poor visibility of the marking at night, increasing safety hazards;

[0003] The evaluation index of the compressive performance of road glass beads with patent publication number CN 112082857A is to prepare glass beads for screening and take sieves with different apertures; step 2. During screening, the sieve apertures are screened in order from large to small, and the sieves are recorded as the nth sieves in order from large to small according to the apertures, and the particle size distribution of the glass beads is obtained. After the nth sieve is screened, the mass mn of the sieve residue sample on the sieve and the mass M tray of the sample on the tray after screening are weighed, and the compressive strength test of the sieve residue samples on each sieve is performed respectively. After the test is completed, the tested glass beads are screened again with the original aperture sieve. The screening process is the same as the original screening process, and the mass mn' of the sample on the sieve after the nth sieve is screened is recorded. ; Step 3. According to formula (1), calculate the weight coefficient Gn of the residual samples on each sieve respectively, (1) where Gn is the weight coefficient of the residual samples on each sieve, %; M is the total mass obtained by summing the mass mn of the residual samples on each sieve after sieving and the mass M of the samples on the tray after the last sieving, g; Step 4. According to formula (2), obtain the evaluation index P of the compressive performance of road glass beads, which evaluates its compressive performance by the mass ratio of the damaged glass beads in the barrel pressure strength test, so as to ensure the compressive performance of the glass beads, ensure the quality of the marking and extend the service life of the marking, extend the service life of the marking and save the subsequent maintenance cost of the marking.

[0004] The above-mentioned pressure testing device and method are difficult to clamp and fix the road glass beads when performing pressure testing on the road glass beads, resulting in the inability to stably transmit the test pressure to the glass beads, which increases the measurement error. At the same time, the existing device is difficult to simulate the pressure applied by the vehicle to the road glass beads when performing pressure testing on the road glass beads. When the road glass beads are actually used, they are mostly laid on the road, and generally only 40%-50% are exposed to the ground. The pressure they are subjected to is mostly the squeezing force of the vehicle tires, and the pressure is mostly from one side to the other. At the same time, the vehicle tires will deform when squeezing them, thereby increasing the force area of ​​the road glass beads. The most commonly used pressure head shape for testing glass beads is usually a flat pressure head, and the force area is much smaller than the force area in actual application, and the pressure direction is from top to bottom, which does not conform to the force direction of the road glass beads when they are actually used, resulting in large measurement errors. Summary of the invention

[0005] The object of the present invention is to provide a device and method for testing the compressive performance of road glass beads to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device and method for testing the compressive performance of glass beads for roads, comprising a moving mechanism, an oil supply mechanism is arranged on the side of the moving mechanism, the moving mechanism comprises an installation box, a screw rod is rotatably arranged inside the installation box, a U-shaped plate is threadedly connected to the screw rod, a placement plate is fixed above the U-shaped plate, a screw motor is fixed at the end of the installation box, an output shaft of the screw motor is connected to the screw rod through a coupling, and the device is characterized in that it also comprises a pressure mechanism, the pressure mechanism comprises a plurality of support columns, the plurality of support columns are fixed above the installation box, a mounting plate is fixed above the plurality of support columns, a hydraulic cylinder is fixed above the mounting plate, a lifting plate is connected to the end of the hydraulic cylinder, and the lifting plate There are two fixed plates fixed at the bottom, baffles are fixed on both sides of the fixed plates, a pressure roller is rotatably arranged between the two fixed plates, the pressure roller is coated with a rubber layer for simulating automobile tires, a rotating motor is fixed on the fixed plate, the output shaft of the rotating motor is connected to the pressure roller through a coupling, hydrostatic bearings are installed on the roller necks on both sides of the pressure roller, mounting blocks are arranged on the hydrostatic bearings, two symmetrical electric push rods 1 are arranged on the mounting blocks, a pressure plate is fixed at the end of the electric push rod 1 on the same side, the hydrostatic bearing is used to assist in adjusting the angle of the pressure plate, an arc plate is arranged on the pressure plate, the arc plate increases the friction between the pressure roller and the pressure roller through the arc structure, a control console is arranged on the side of the mounting box, a replacement mechanism is arranged at the end of the moving mechanism, and a detection mechanism is arranged on the moving mechanism.

[0007] The detection mechanism includes two electric push rods six and a plurality of superimposed plates, the two electric push rods six are fixed above the U-shaped plate, the ends of the two electric push rods six are fixed with feeding plates, a plurality of cylinders for facilitating pressure transmission are fixed above the feeding plates, the cylinders are threadedly connected with screws, the ends of the screws are fixed with semi-circular plates, the screws are sleeved with support sleeves for facilitating pressure transmission, the superimposed plates are placed on the placement plates, a plurality of circular holes are opened on the superimposed plates, circular ring plates are fixed inside the circular holes, circular arc plates are fixed inside the circular ring plates, and the inner walls of the circular arc plates and the semi-circular arc plates are evenly distributed around the circumference with a plurality of pressure sensors for collecting multiple angle data.

[0008] The moving mechanism also includes two sliding rods, the U-shaped plate is slidably arranged on the two sliding rods, a plurality of feeding holes 2 are opened on the placement plate, a plurality of electric push rods 5 are fixed above the U-shaped plate, an extrusion plate for fixing is fixed at the end of the electric push rod 5, a storage box is fixed below the placement plate, a plurality of openings are arranged below the storage box, a pull-out box is slidably arranged inside the storage box, a plurality of feeding holes 1 are opened inside the pull-out box, and a guide block is fixed inside the pull-out box.

[0009] The oil supply mechanism includes an oil drop pipe and an oil storage tank. The oil storage tank is located on the side of the installation box. An oil pump is arranged above the oil storage tank. The oil pump is connected to an oil suction pipe extending into the oil storage tank. The oil pump is connected to an oil delivery pipe. The end of the oil delivery pipe is connected to a hydraulic cylinder. One end of the oil drop pipe is connected to the hydraulic cylinder, and the other end of the oil drop pipe is connected to the oil storage tank.

[0010] The replacement mechanism comprises a storage box, two electric push rods 2 and two electric push rods 4, the storage box is located at the end of the installation box, an electric push rod 3 is fixed inside the storage box, a support plate is fixed above the electric push rod 3, a sliding plate is arranged on the storage box, a discharge port for limiting the discharge quantity is opened on the sliding plate, two stoppers are fixed on the side of the sliding plate, the two electric push rods 4 are fixed on the side of the oil storage tank, the two electric push rods 2 are fixed on the end of the storage box, a T-plate is fixed above the two electric push rods 2 and the two electric push rods 4, two vertical plates are fixed below the T-plate, a screw rod 1 is rotatably arranged between the two vertical plates, two limit rods are fixed between the two vertical plates, a moving block is threadedly connected to the screw rod 1, the moving block is slidably arranged on the two limit rods, a push plate is arranged below the moving block, a screw motor 1 is fixed on the vertical plate, and the output shaft of the screw motor 1 is connected to the screw rod 1 through a coupling.

[0011] The pressure sensor includes a ceramic sheet, a receptor, a signal processor and a support block. The support block is arranged on the detection component, a signal processor is arranged above the support block, the signal processor is connected to the control console through a transmission line, a receptor is arranged above the signal processor, and a ceramic sheet is arranged on the receptor.

[0012] The method for testing the compressive resistance of the road glass beads uses a testing device for the compressive resistance of the road glass beads, and the testing method comprises the following steps:

[0013] Step 1: Test equipment preparation, the replacement mechanism moves multiple stacked plates to the top of the placement plate in sequence according to the needs;

[0014] Step 2: Test and load the materials in batches. Take out a certain amount of glass beads from each batch of glass beads produced. The amount should be large enough. Take a certain amount of glass beads for road use and put them into the pull-out box. Move the glass beads for road use into the storage box through the pull-out box.

[0015] Step 3: Sampling and fixing, the two electric push rods extend six times, driving the semi-circular arc plate to reciprocate and lift, randomly placing the road glass beads inside the semi-circular arc plate, and the semi-circular arc plate drives the road glass beads to rise to the inside of the arc plate of the superimposed plate, and the road glass beads are limited and fixed;

[0016] Step 4: Pressure test 1: Use the pressure mechanism to simulate the rotation of the car tire, and the moving mechanism drives the wrapped and fixed road glass beads to move from one side of the pressure mechanism to the other side, simulating the car rolling over;

[0017] Step 5: Pressure test 2, switch the pressure mode of the pressure mechanism to adjust the angle of the pressure plate, and the moving mechanism drives the wrapped and fixed road glass beads to move from one side of the pressure mechanism to the other side, so that the road glass beads are pressed at different angles, and test the influence of pressure at different angles on the compressive performance of the road glass beads;

[0018] Step six: Data collection. When the road glass beads are subjected to pressure at different angles and in different ways, the road glass beads transmit the pressure to all directions. The pressure sensors inside the semi-arc plate and the arc plate convert the pressure in all directions into signal data, and then transmit the signal data to the control console through the transmission line. The control console collects the pressure signal data for collection and processing.

[0019] In the step 4, the pressure roller applies pressure to the road glass beads from different directions, and the rolling direction of the pressure roller can be switched to simulate the rolling of the car tire through the rubber layer.

[0020] In the step 4, the pressure plate applies pressure to the road glass beads from different directions. The inclination angle of the pressure plate can be adjusted to apply pressure to the road glass beads from multiple angles, thereby improving the detection accuracy of the road glass beads.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The device and method for testing the compressive performance of road glass beads use semi-circular plates and circular plates to cover and fix the road glass beads, so that the glass beads can be stably loaded, and the test pressure cannot be stably transmitted to the glass beads, thereby reducing the measurement error. At the same time, the number of superimposed plates can be adjusted to simulate the stress conditions of road glass beads with different covering degrees.

[0023] Through the cooperation of the pressure roller and the rubber layer, after applying pressure, the roller rolls over the fixed road glass beads to simulate the force direction of the road glass beads in actual use. At the same time, the force area is increased by the rubber, which is close to the actual application scenario and reduces the measurement error.

[0024] The contraction of the electric push rod can drive the pressure plate to move, so that the arc plate fits on the pressure roller. The rotating motor drives the pressure roller to rotate through the output shaft, and the pressure roller drives the pressure plate to rotate. The angle of the pressure plate can be adjusted by rotating it, so that it can apply pressure to the road glass beads from multiple angles, and the influence of pressure at different angles on the compressive performance of the road glass beads can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the present invention;

[0027] Figure 3 It is a side view structural schematic diagram of the present invention;

[0028] Figure 4 It is a schematic diagram of the bottom three-dimensional structure of the detection mechanism in the present invention;

[0029] Figure 5 It is a schematic diagram of the upper three-dimensional structure of the detection mechanism in the present invention;

[0030] Figure 6 It is a partial structural schematic diagram of the pressure-applying mechanism in the present invention;

[0031] Figure 7 Schematic diagram of the internal structure of the replacement mechanism in the present invention

[0032] Figure 8 It is a schematic diagram of the front structure of the moving mechanism in the present invention;

[0033] Fig. 9 It is a schematic diagram of the rear structure of the moving mechanism in the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the pressure sensor in the present invention.

[0035] In the figure: 1. Oil supply mechanism; 101. Oil delivery pipe; 102. Oil drop pipe; 103. Oil pump; 104. Oil storage tank; 105. Oil extraction pipe; 2. Pressure mechanism; 201. Hydraulic cylinder; 202. Mounting plate; 203. Lifting plate; 204. Support column; 205. Fixed plate; 206. Baffle plate; 207. Pressing plate; 208. Pressing roller; 209. Electric push rod 1; 210. Hydrostatic bearing; 211. Mounting block; 212. Arc plate; 213. Rubber layer; 3. Replacement mechanism; 301. T-plate; 302. Screw motor 1; 303. Electric push rod 2; 304. Storage box; 305. Screw 1; 306. Sliding plate; 307. Electric push rod 3; 308. Support plate; 309. Push plate; 310. Moving block; 311. Limit rod ; 312, stopper; 313, electric push rod four; 4, moving mechanism; 401, installation box; 402, electric push rod five; 403, placement plate; 404, guide block; 405, sliding rod; 406, feeding hole one; 407, U-shaped plate; 408, storage box; 409, screw rod two; 410, pull-out box; 411, extrusion plate; 412, feeding hole two; 413, screw motor two; 5, control console; 6, detection mechanism; 601, screw; 602, support sleeve; 603, electric push rod six; 604, cylinder; 605, pressure sensor; 605a, ceramic plate; 605b, sensor; 605c, signal processor; 605d, support block; 606, annular plate; 607, arc plate; 608, superposition plate; 609, feeding plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] When road glass beads are actually used, they are mostly laid on the road, and generally only 40%-50% are exposed on the ground. When the existing testing device performs pressure testing on the road glass beads, it is difficult to clamp and fix the road glass beads, resulting in the inability to stably transmit the test pressure to the glass beads. At the same time, the most commonly used pressure head shape in the existing testing of glass beads is usually a flat pressure head, and the force-bearing area is much smaller than the force-bearing area in actual application, and the pressure direction is from top to bottom, which does not conform to the force direction of the road glass beads when they are actually used. In the process of using this equipment for pressure testing, it is necessary to adjust the number of superimposed plates 608 according to needs, so as to simulate different degrees of coating of glass beads, and then move the road glass beads to the inside of the storage box 408 through the pull-out box 410, so as to perform batch sampling.

[0038] The semi-arc plate and the arc plate 607 are used to wrap and fix the road glass beads so that they can stably bear the glass beads and avoid the test pressure from being unable to be stably transmitted to the glass beads. The pressure roller and the rubber layer are used to simulate the force direction of the road glass beads during actual use. At the same time, the rubber is used to increase its force area.

[0039] like Figure 1-Figure 10 As shown, the present invention provides a technical solution: a testing device for the compressive performance of glass beads for roads, comprising a moving mechanism 4, an oil supply mechanism 1 is arranged on the side of the moving mechanism 4, the moving mechanism 4 comprises an installation box 401, a screw rod 409 is arranged inside the installation box 401 for rotation, a U-shaped plate 407 is threadedly connected to the screw rod 409, a placement plate 403 is fixed above the U-shaped plate 407, a screw motor 413 is fixed at the end of the installation box 401, the output shaft of the screw motor 413 is connected to the screw rod 409 through a coupling, and also comprises a detection mechanism 6 and a pressure mechanism 2, the pressure mechanism 2 is The pressing mechanism 2 includes a plurality of support columns 204, the plurality of support columns 204 are fixed above the mounting box 401, a mounting plate 202 is fixed above the plurality of support columns 204, a hydraulic cylinder 201 is fixed above the mounting plate 202, a lifting plate 203 is connected to the end of the hydraulic cylinder 201, two fixed plates 205 are fixed below the lifting plate 203, baffles 206 are fixed on both sides of the fixed plate 205, a pressing roller 208 is rotatably arranged between the two fixed plates 205, the pressing roller 208 is coated with a rubber layer 213, a rotating motor is fixed on the fixed plate 205, and the output shaft of the rotating motor passes through The coupling is connected to the pressure roller 208. The roller necks on both sides of the pressure roller 208 are installed with hydrostatic bearings 210. The hydrostatic bearings 210 are provided with mounting blocks 211. The mounting blocks 211 are provided with two symmetrical electric push rods 209. The ends of the electric push rods 209 on the same side are fixed with a pressure plate 207. The pressure plate 207 is provided with an arc plate 212. The detection mechanism 6 includes two electric push rods 603 and a plurality of superimposed plates 608. The two electric push rods 603 are fixed above the U-shaped plate 407. The ends of the two electric push rods 603 are fixed with a feeding plate 609. The upper part of the feeding plate 609 is fixed with a There are several cylinders 604, on which screws 601 are threadedly connected, and a semi-circular plate is fixed at the end of the screw 601. A support sleeve 602 for providing supporting force is sleeved on the screw 601. A stacking plate 608 is placed on the placement plate 403. The stacking plate 608 is provided with several circular holes, inside which circular ring plates 606 are fixed, inside which circular ring plates 606 are fixed a circular plate 607, and the inner walls of the circular plate 607 and the semi-circular plate are evenly distributed around the circumference with several pressure sensors 605, a replacement mechanism 3 is provided at the end of the moving mechanism 4, and a control console 5 is provided on the side of the installation box 401.

[0040] It should be noted that the arc plate 607 is a shape obtained by cutting a semi-arc plate. Both the arc plate 607 and the semi-arc plate can assist in attaching a plurality of pressure sensors 605 to the glass beads.

[0041] The moving mechanism 4 also includes two sliding rods 405, a U-shaped plate 407 is slidably arranged on the two sliding rods 405, a plurality of feeding holes 412 are opened on the placement plate 403, a plurality of electric push rods 402 are fixed above the U-shaped plate 407, an extrusion plate 411 is fixed to the end of the electric push rods 402, a storage box 408 is fixed below the placement plate 403, a plurality of openings are arranged below the storage box 408, a pull-out box 410 is slidably arranged inside the storage box 408, a plurality of feeding holes 406 are opened inside the pull-out box 410, and a guide block 404 is fixed inside the pull-out box 410.

[0042] It should be noted that after the pull-out box 410 is pulled out, the several feeding holes 406 inside the storage box 408 are staggered with the several openings below the storage box 408, thereby preventing the glass beads from falling through the feeding holes 406 and the openings. When the pull-out box 410 is pushed into the storage box 408, the feeding holes 406 and the openings overlap, and the semi-circular arc plate contacts the bottom of the storage box 408, preventing the glass beads from falling after the feeding holes 406 and the openings overlap.

[0043] The oil supply mechanism 1 includes an oil drop pipe 102 and an oil storage tank 104. The oil storage tank 104 is located on the side of the installation box 401. An oil pump 103 is arranged above the oil storage tank 104. The oil pump 103 is connected to an oil extraction pipe 105 extending into the oil storage tank 104. The oil pump 103 is connected to an oil delivery pipe 101. The end of the oil delivery pipe 101 is connected to the hydraulic cylinder 201. One end of the oil drop pipe 102 is connected to the hydraulic cylinder 201, and the other end of the oil drop pipe 102 is connected to the oil storage tank 104.

[0044] The replacement mechanism 3 includes a storage box 304, two electric push rods 2 303 and two electric push rods 4 313. The storage box 304 is located at the end of the installation box 401. An electric push rod 3 307 is fixed inside the storage box 304. A support plate 308 is fixed above the electric push rod 307. A sliding plate 306 is provided on the storage box 304. A discharge port is provided on the sliding plate 306. Two stoppers 312 are fixed on the side of the sliding plate 306. The two electric push rods 4 313 are fixed on the side of the oil storage tank 104. The two electric push rods 2 303 are fixed on the storage box 30 4, a T-plate 301 is fixed above the two electric push rods 2 303 and the two electric push rods 4 313, two vertical plates are fixed below the T-plate 301, a screw rod 1 305 is rotatably arranged between the two vertical plates, two limit rods 311 are fixed between the two vertical plates, a moving block 310 is threadedly connected to the screw rod 1 305, the moving block 310 is slidably arranged on the two limit rods 311, a push plate 309 is arranged below the moving block 310, a screw motor 1 302 is fixed on the vertical plate, and the output shaft of the screw motor 1 302 is connected to the screw rod 1 305 through a coupling.

[0045] It should be noted that the discharge port is an open slot, which does not affect the movement of the push plate 309. The push plate 309 can be replaced with push plates 309 of different lengths as needed. The two blocks 312 can limit the height of the top stacking plate 608 so that it is located at the discharge port for easy pushing.

[0046] The pressure sensor 605 includes a ceramic sheet 605a, a receptor 605b, a signal processor 605c and a support block 605d. The support block 605d is arranged on the detection component. A signal processor 605c is arranged above the support block 605d. The signal processor 605c is connected to the console 5 through a transmission line. A receptor 605b is arranged above the signal processor 605c, and the ceramic sheet 605a is arranged on the receptor 605b.

[0047] It should be noted that the ceramic sheet 605a has an arc-shaped structure so that it can completely fit the surface of the glass beads.

[0048] The test method comprises the following steps:

[0049] Step 1: Test equipment preparation, the electric push rod 307 extends to drive the push plate 309 to rise, the push plate 309 drives the plurality of support plates 308 to rise, the support plates 308 drive the plurality of stacking plates 608 to rise, the top stacking plate 608 drives the two stoppers 312 to rise, the two stoppers 312 drive the sliding plate 306 to rise, the two electric push rods 2 303 and the two electric push rods 4 313 contract to drive the T-plate 301 to descend, the T-plate 301 drives the two vertical plates to descend, the two vertical plates drive the screw rod 1 3 05 descends, the screw rod 305 drives the moving block 310 to descend, the moving block 310 drives the push plate 309 to descend, the screw motor 302 drives the screw rod 305 to rotate through the output shaft, the screw rod 305 drives the moving block 310 to move, the moving block 310 drives the push plate 309 to move, the push plate 309 pushes the superimposed plate 608 to move from the discharge port to the placement plate 403, and the plurality of electric push rods 402 extend to drive the extrusion plate 411 to descend, and the extrusion plate 411 extrudes and fixes the placement plate 403;

[0050] Step 2: Check the loading in batches, take out a certain amount of glass beads from each batch of glass beads produced, the amount should be large enough, pull out the pull-out box 410, take out a certain amount of road glass beads and put them into the pull-out box 410, push the pull-out box 410 to move the road glass beads into the storage box 408;

[0051] Step 3: Sampling and fixing, a number of road glass beads are guided by a number of guide blocks 404, so that a number of road glass beads fall into a loading hole 406, and two electric push rods 603 reciprocate to extend and contract, thereby driving a loading plate 609 to reciprocate and lift, and the loading plate 609 drives a number of cylinders 604 to move, and a number of cylinders 604 drive screws 601 to move, and screws 601 drive the semi-circular plate to reciprocate and lift, and randomly place the road glass beads inside the semi-circular plate, and the semi-circular plate drives the road glass beads to rise to the bottom of the superimposed plate 608, so that the semi-circular plate and the circular plate 607 are connected, and the road glass beads are limited and fixed;

[0052] Step 4: Pressure test, the hydraulic cylinder 201 extends to drive the lifting plate 203 to descend, the lifting plate 203 drives the two fixed plates 205 to descend, the two fixed plates 205 drive the pressure roller 208 to descend, the pressure roller 208 drives the rubber layer 213 to descend onto the superimposed plate 608, the rotary motor drives the pressure roller 208 to rotate through the output shaft, the screw motor 2 413 drives the screw 2 409 to rotate through the output shaft, the screw 2 409 drives the U-shaped plate 407 to move, the U-shaped plate 407 drives the placement plate 403 to move, the placement plate 403 drives the superimposed plate 608 to move, and the superimposed plate 608 drives the road glass beads to move from one side of the pressure roller 208 to the other side, simulating the rolling of car tires;

[0053] Step 5: When it is necessary to change the pressure mode, the electric push rod 209 on the same side contracts to drive the pressure plate 207 to move, and the pressure plate 207 drives the arc plate 212 to move, so that the arc plate 212 fits on the rubber layer 213, and the rotating motor drives the pressure roller 208 to rotate through the output shaft, and the pressure roller 208 drives the static pressure bearing 210 to rotate through the roller neck, and the static pressure bearing 210 drives the mounting block 211 to rotate, and the mounting block 211 drives the electric push rod 209 to rotate, and the electric push rod 209 drives the pressure plate 207 to rotate, and adjusts the angle of the pressure plate 207. The hydraulic cylinder 201 extends to drive the lifting plate 203 to descend, and the lifting plate 203 drives the two fixed plates 205 to descend, and the two fixed plates 205 drive the pressure roller 208 to descend, and the pressure roller 208 drives the pressure plate 207 to descend, and the glass beads for the road are pressed from different angles;

[0054] Step six: data collection. When the road glass beads are subjected to applied pressure, the road glass beads transfer the pressure to the pressure sensor 605 inside the semi-circular plate and the circular plate 607. The pressure is transferred to the receptor 605b through the ceramic sheet 605a. The receptor 605b transfers the pressure signal to the signal processor 605c. The signal processor 605c transmits the signal to the console 5 through the transmission line. The console 5 collects and processes the pressure signal.

[0055] The test device and method for the compressive performance of the glass beads for road use are used to test the compressive performance of the glass beads for road use by simulating tire rolling and static extrusion. At the same time, the compressive performance of the glass beads for road use under different conditions is measured by changing the angle and coverage of the pressure applied to the glass beads for road use, and the following Table 1 is obtained;

[0056] Table 1:

[0057] ;

[0058] This verifies that there is a certain error between the compressive resistance measured by the actual use environment of the glass beads and the existing pressure test conditions. In the horizontal static extrusion pressure test on the glass beads, the coverage of the glass beads has basically no effect on their compressive resistance. In the 45° inclined direction static extrusion pressure test on the glass beads, the higher the coverage of the glass beads, the worse the compressive resistance of the glass beads. It can be seen that during static extrusion, the greater the coverage of the glass beads, the greater the shear force they are subjected to when they are squeezed from the side, resulting in lower compressive performance. In the 45° inclined direction simulated wheel rolling pressure test on the glass beads, the glass beads have the strongest compressive resistance when the coverage is 55%. It can be seen that the coverage of the glass beads has a certain influence on its compressive performance. However, the area of ​​pressure applied during wheel rolling is larger, and the direction of the shear force on the glass beads is different, so that the compressive performance reaches the maximum when the coverage is 55%.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A device for testing the compressive performance of glass beads for road use, comprising a moving mechanism (4), an oil supply mechanism (1) being arranged on the side of the moving mechanism (4), the moving mechanism (4) comprising a mounting box (401), a second screw rod (409) being rotatably arranged inside the mounting box (401), a U-shaped plate (407) being threadedly connected to the second screw rod (409), a placement plate (403) being fixed above the U-shaped plate (407), a second screw rod motor (413) being fixed at the end of the mounting box (401), an output shaft of the second screw rod motor (413) being connected to the second screw rod (409) via a coupling, characterized in that: The pressure applying mechanism (2) further comprises a plurality of support columns (204), the plurality of support columns (204) being fixed above the installation box (401), a mounting plate (202) being fixed above the plurality of support columns (204), a hydraulic cylinder (201) being fixed above the mounting plate (202), an end of the hydraulic cylinder (201) being connected to a lifting plate (203), two fixed plates (205) being fixed below the lifting plate (203), baffles (206) being fixed on both sides of the fixed plates (205), a pressure roller (208) being rotatably arranged between the two fixed plates (205), the pressure roller (208) being coated with a rubber layer (213) for simulating a car tire, a rotating motor being fixed on the fixed plate (205), and a rotating motor being fixed on the rotating plate (205). The output shaft of the rotating motor is connected to the pressure roller (208) through a coupling. The roller necks on both sides of the pressure roller (208) are both installed with hydrostatic bearings (210). A mounting block (211) is provided on the hydrostatic bearing (210). Two symmetrical electric push rods (209) are provided on the mounting block (211). A pressure plate (207) is fixed at the end of the electric push rod (209) on the same side. The hydrostatic bearing (210) is used to assist in adjusting the angle of the pressure plate (207). An arc plate (212) is provided on the pressure plate (207). The arc plate (212) increases the friction between the pressure roller (208) and the pressure roller (208) through the arc structure. A control console (5) is provided on the side of the installation box (401). A replacement mechanism (3) is provided at the end of the moving mechanism (4). The moving mechanism ( 4) is provided with a detection mechanism (6), the detection mechanism (6) comprising two electric push rods six (603) and a plurality of superimposed plates (608), the two electric push rods six (603) are fixed above the U-shaped plate (407), the superimposed plates (608) are placed on the placement plate (403), a plurality of circular holes are opened on the superimposed plates (608), a circular ring plate (606) is fixed inside the circular hole, a circular arc plate (607) is fixed inside the circular ring plate (606), the inner walls of the circular arc plate (607) and the semi-circular arc plate are evenly distributed around the circumference and are provided with a plurality of pressure sensors (605) for collecting multiple angle data, the replacement mechanism (3) comprises a storage box (304), two electric push rods two (303) and two electric push rods four (313), The storage box (304) is located at the end of the installation box (401), an electric push rod 3 (307) is fixed inside the storage box (304), a support plate (308) is fixed above the electric push rod 3 (307), a sliding plate (306) is arranged on the storage box (304), two electric push rods 4 (313) are fixed to the side of the oil storage tank (104), two electric push rods 2 (303) are fixed to the end of the storage box (304), a T-shaped plate (301) is fixed above the two electric push rods 2 (303) and the two electric push rods 4 (313), two vertical plates are fixed below the T-shaped plate (301), a screw rod 1 (305) is rotatably arranged between the two vertical plates, and two limit rods (311) are fixed between the two vertical plates.A moving block (310) is threadedly connected to the screw rod 1 (305), and the moving block (310) is slidably arranged on two limit rods (311). A push plate (309) is arranged below the moving block (310), and a screw motor 1 (302) is fixed on the vertical plate. The output shaft of the screw motor 1 (302) is connected to the screw rod 1 (305) through a coupling.

2. A device for testing the compressive performance of road glass beads according to claim 1, characterized in that: A loading plate (609) is fixed at the end of the electric push rod six (603), a plurality of cylinders (604) for facilitating pressure transmission are fixed above the loading plate (609), a screw rod (601) is threadedly connected to the cylinder (604), a semi-circular arc plate is fixed at the end of the screw rod (601), and a support sleeve (602) for facilitating pressure transmission is sleeved on the screw rod (601).

3. A device for testing the compressive performance of road glass beads according to claim 2, characterized in that: The moving mechanism (4) further comprises two sliding rods (405), a U-shaped plate (407) is slidably arranged on the two sliding rods (405), a plurality of second feeding holes (412) are provided on the placement plate (403), a plurality of electric push rods (402) are fixed above the U-shaped plate (407), an extrusion plate (411) for fixing is fixed at the end of the electric push rods (402), a storage box (408) is fixed below the placement plate (403), a plurality of openings are provided below the storage box (408), a pull-out box (410) is slidably arranged inside the storage box (408), a plurality of first feeding holes (406) are provided inside the pull-out box (410), and a guide block (404) is fixed inside the pull-out box (410).

4. A device for testing the compressive performance of road glass beads according to claim 1, characterized in that: The oil supply mechanism (1) comprises an oil drop pipe (102) and an oil storage tank (104); the oil storage tank (104) is located on the side of the installation box (401); an oil pump (103) is arranged above the oil storage tank (104); the oil pump (103) is connected to an oil extraction pipe (105) extending into the interior of the oil storage tank (104); the oil pump (103) is connected to an oil delivery pipe (101); the end of the oil delivery pipe (101) is connected to a hydraulic cylinder (201); one end of the oil drop pipe (102) is connected to the hydraulic cylinder (201); and the other end of the oil drop pipe (102) is connected to the oil storage tank (104).

5. The device for testing the compressive performance of road glass beads according to claim 1, characterized in that: The sliding plate (306) is provided with a material discharging port for limiting the amount of material discharging, and two stoppers (312) are fixed to the side of the sliding plate (306).

6. A device for testing the compressive performance of road glass beads according to claim 2, characterized in that: The pressure sensor (605) comprises a ceramic sheet (605a), a sensor (605b), a signal processor (605c) and a support block (605d); the support block (605d) is arranged on the detection component; a signal processor (605c) is arranged above the support block (605d); the signal processor (605c) is connected to the control console (5) via a transmission line; a sensor (605b) is arranged above the signal processor (605c); and the ceramic sheet (605a) is arranged on the sensor (605b).

7. A method for testing the compressive performance of road glass beads, using the device for testing the compressive performance of road glass beads according to claim 3, characterized in that: The test method comprises the following steps: Step 1: Prepare the test equipment, and replace the mechanism (3) to sequentially move the multiple stacking plates (608) to the top of the placement plate (403) according to the requirements; Step 2: Testing and loading in batches, taking out a certain number of glass beads from each batch of glass beads produced, the number should be large enough, taking out a certain number of glass beads for road use and putting them into the pull-out box (410), and moving the glass beads for road use into the storage box (408) through the pull-out box (410); Step 3: Sampling and fixing, two electric push rods 6 (603) extend, drive the semi-circular arc plate to move up and down, randomly place the road glass beads inside the semi-circular arc plate, and the semi-circular arc plate drives the road glass beads to rise to the inside of the circular arc plate (607) of the superimposed plate (608), and the road glass beads are limited and fixed; Step 4: Pressure test 1, the pressure mechanism (2) simulates the rotation of the car tire, and the moving mechanism (4) drives the wrapped and fixed road glass beads to move from one side of the pressure mechanism (2) to the other side, simulating the rolling of the car; Step 5: Pressure test 2, switching the pressure mode of the pressure mechanism (2) so that it adjusts the angle of the pressure plate (207), and the moving mechanism (4) drives the wrapped and fixed road glass beads to move from one side of the pressure mechanism (2) to the other side, so that the road glass beads are pressurized at different angles, and the influence of pressure at different angles on the compressive performance of the road glass beads is tested; Step 6: Data collection. When the road glass beads are subjected to pressures applied at different angles and in different ways, the road glass beads transmit the pressures to all directions. The pressure sensors (605) inside the semi-circular plate and the circular plate (607) convert the pressures in all directions into signal data, and then transmit the signal data to the control console (5) through the transmission line. The control console (5) collects the pressure signal data for collection and processing.

8. The method for testing the compressive performance of road glass beads according to claim 7, characterized in that: In the fourth step, the pressure roller (208) applies pressure to the road glass beads from different directions, and the rolling direction of the pressure roller (208) is switched to simulate the rolling of a car tire through the rubber layer (213).

9. The method for testing the compressive performance of road glass beads according to claim 7, characterized in that: In the fourth step, the pressure plate (207) applies pressure to the road glass beads from different directions, and the inclination angle of the pressure plate (207) is adjusted to apply pressure to the road glass beads from multiple angles, thereby improving the detection accuracy of the road glass beads.

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