A device for testing the skid resistance of a road surface

Abstract

The application discloses a kind of road surface skid resistance testing device, including pendulum instrument body, mounting plate and feed tank, the rear end of the feed tank is fixedly provided with mounting plate, the pendulum instrument body is fixedly arranged at the top of the mounting plate;Cavity for placing test sample is opened in the feed tank, the top of the feed tank is provided with the test window matched with the pendulum of the pendulum instrument body, the test window is communicated with the cavity in the feed tank, support mechanism matched with the lower surface of the test sample is arranged in the feed tank, and the test window is matched with the upper surface of the test sample.The road surface skid resistance testing device of the application is ingenious in design, practical in function, compact in structure, effectively solves the lack of fixing structure when pendulum instrument faces small road surface test sample in laboratory, and affects the use convenience of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of road surface testing equipment, in particular to a road surface skid resistance testing device. BACKGROUND

[0002] Skid resistance is one of the important indicators of road safety, and by testing the skid resistance of the road surface, the driving safety of the road can be evaluated, which helps the traffic management department to formulate corresponding traffic safety measures and reduce the occurrence of traffic accidents. In the prior art, a pendulum instrument is usually used to measure the friction coefficient to obtain the determination of the skid resistance of the road surface. However, the use of this device requires the equipment to be transported to the construction site for testing, and there is a lack of fixing structure when facing small road surface test samples in the laboratory, which affects the convenience of using the equipment. Therefore, how to develop a new type of road surface skid resistance testing device has become a problem to be solved by the technical personnel in the field. SUMMARY

[0003] The purpose of the present application is to provide a road surface skid resistance testing device to solve the problem of lack of fixing structure when facing small road surface test samples in the laboratory with a pendulum instrument, which affects the convenience of using the equipment.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] The road surface skid resistance testing device of the present application comprises a pendulum instrument body, a mounting plate and a feeding tank, the rear end of the feeding tank is fixedly provided with a mounting plate, and the pendulum instrument body is fixedly arranged at the top end of the mounting plate; a cavity for placing test samples is formed in the feeding tank, a test window matched with the pendulum bob of the pendulum instrument body is arranged at the top end of the feeding tank, the test window is in communication with the cavity in the feeding tank, a supporting mechanism matched with the lower surface of the test sample is arranged in the feeding tank, and the test window is matched with the upper surface of the test sample.

[0006] Further, a plurality of test samples are stacked in the cavity of the feeding tank.

[0007] Further, a door plate is hingedly connected to the front end face of the feeding tank, an outlet is formed in the upper end of the door plate, and the outlet is matched with the uppermost test sample in the feeding tank.

[0008] Further, a second extension bracket is welded to the rear end face of the feeding tank, a second air cylinder is fixedly arranged on the second extension bracket, a second pushing mechanism is arranged on the output end of the second air cylinder, and the second pushing mechanism is matched with the rear end face of the test sample after passing through the through hole of the feeding tank.

[0009] Further, the supporting mechanism comprises a first horizontal plate, a second horizontal plate and a supporting plate, the second horizontal plate is fixedly arranged in the cavity of the feeding box through a second supporting column, the first horizontal plate is fixedly arranged on the second horizontal plate through a first supporting column, a lead screw is rotatably arranged between the first horizontal plate and the second horizontal plate, a driving plate is movably arranged between the first horizontal plate and the second horizontal plate, the driving plate is threadedly matched with the lead screw, a connecting column is fixedly arranged on the driving plate, the connecting column passes through the first horizontal plate upwards and is provided with the supporting plate, and the supporting plate is matched with the lower surface of the test sample; and the lead screw is driven by a motor at the bottom end of the second horizontal plate.

[0010] Further, a first extension support is fixedly arranged on the side wall of the feeding box, a first air cylinder is fixedly arranged on the first extension support, a wedge block is arranged on the output end of the first air cylinder through a first pushing mechanism, the wedge block is matched with the lower surface of the highest layer of test sample, and the wedge block is matched with the upper surface of the second highest layer of test sample.

[0011] Further, the upper surface of the wedge block is a slope, and the lower surface of the wedge block is a plane.

[0012] Further, the lower surface of the test sample is provided with a slope clamping groove matched with the wedge block.

[0013] Further, the bottom end of the mounting plate is fixedly provided with a supporting leg, and the upper surface of the mounting plate is provided with a positioning groove matched with the supporting leg of the pendulum instrument body.

[0014] Further, the first pushing mechanism comprises a bottom plate, a guide rod, a spring and a buffer block, the bottom plate is fixed on the output shaft of the air cylinder, the guide rod is fixedly arranged on the bottom plate, the buffer block is movably arranged on the guide rod, and the spring is sleeved on the guide rod and matched with the buffer block and the bottom plate; and the first pushing mechanism and the second pushing mechanism are the same in structure.

[0015] The use process of the application is as follows:

[0016] Step one, slope clamping grooves are arranged on the lower surface of the test sample at left and right two side edges;

[0017] Step two, the door plate of the feeding box is opened, and a plurality of test samples to be tested are stacked on the supporting mechanism in the feeding box;

[0018] Step three, the motor on the supporting mechanism is actuated, the supporting plate is driven to move upwards through the lead screw, the supporting plate drives the whole stack of test samples to move upwards, and the test sample on the top layer approaches the test window at the top end of the feeding box;

[0019] Step four, the first cylinder on the first extension support inserts the wedge into the inclined clamping groove of the top layer of test sample through the first pushing mechanism, so that the upper surface of the top layer of test sample is close to the test window and is firmly fixed;

[0020] Step five, the pendulum completes the test work of the current test sample;

[0021] Step six, the first cylinder drives the wedge to retract, and the second cylinder on the second extension support pushes the top layer of test sample out of the discharge port on the door plate through the second pushing mechanism;

[0022] Step seven, the test sample at the discharge port is manually taken out, and the support mechanism is started again, so that the top surface of the remaining test sample is close to the test window for continuing the test.

[0023] Compared with the prior art, the beneficial technical effects of the present application are:

[0024] The pavement anti-skid performance testing device sets the existing pendulum body on the feeding box containing test samples through the mounting plate, so that the small test samples in the feeding box are fixed and tested by the pendulum body; the pavement anti-skid performance testing device can place multiple different test samples at a time, and the test samples are stacked in the cavity of the feeding box and are tested one by one; the door plate of the pavement anti-skid performance testing device is provided with a discharge port matched with the top layer of test sample, and the test sample after the test is pushed out of the discharge port by the second pushing mechanism, which is convenient for discharging; the feeding box of the pavement anti-skid performance testing device is provided with a support mechanism, which can lift the test sample, so that the test sample can cooperate with the test window at the top end of the feeding box; the pavement anti-skid performance testing device is provided with a wedge matched with the inclined clamping groove at the bottom of the top layer of test sample, which prevents the test sample from swinging accidentally during the test. In general, the pavement anti-skid performance testing device is ingenious in design, practical in function, compact in structure, and effectively solves the problem that the pendulum lacks a fixing structure when facing small pavement test samples in the laboratory, which affects the convenience of the use of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in conjunction with the drawings:

[0026] Figure 1 It is a front view of the pavement anti-skid performance testing device of the present application;

[0027] Figure 2 It is a top view of the pavement anti-skid performance testing device of the present application (without pendulum body);

[0028] Figure 3 It is a front view of the feeding box;

[0029] Figure 4 This is a side sectional view of the feed box (in test condition).

[0030] Figure 5 This is a side sectional view of the feeding box (discharge state);

[0031] Figure 6 This is an enlarged view of the first feeding mechanism;

[0032] Figure 7 This is an enlarged view of the second feeding mechanism;

[0033] Figure 8 This is a schematic diagram of the supporting mechanism structure;

[0034] Figure 9 Axonometric drawing of the test sample.

[0035] Explanation of reference numerals in the attached drawings: 1. Pendulum instrument body; 101. Support leg; 102. Pendulum; 2. Mounting plate; 201. Support leg; 202. Positioning groove; 3. Feed box; 301. Test window; 302. First extension bracket; 303. First cylinder; 304. First pushing mechanism; 30401. Base plate; 30402. Guide rod; 30403. Spring; 30404. Buffer block; 305. Wedge block; 306. Second extension bracket; 307. Second cylinder; 308. Second pushing mechanism; 309. Support mechanism; 30901. First horizontal plate; 30902. Second horizontal plate; 30903. Connecting column; 30904. Drive plate; 30905. Motor; 30906. Lead screw; 30907. First support column; 30908. Support plate; 30909. Second support column; 4. Test sample; 401. Inclined slot; 5. Door panel; 501. Discharge port. Detailed Implementation

[0036] like Figures 1 to 9 As shown, a road surface skid resistance testing device includes a pendulum instrument body 1, a mounting plate 2, and a feeding box 3.

[0037] The rear end of the feeding box 3 is fixedly provided with an mounting plate 2, and the pendulum instrument body 1 is fixedly provided at the top of the mounting plate 2.

[0038] Specifically, a support leg 201 is fixedly provided at the bottom of the mounting plate 2, making the structure of the mounting plate 2 more stable. A positioning groove 202 is provided on the upper surface of the mounting plate 2 to mate with the support leg 101 of the pendulum instrument body 1. This allows the support leg 101 of the pendulum instrument body 1 to fall into the positioning groove 202, making the positioning more accurate and the installation more secure when installing the pendulum instrument body 1.

[0039] The cavity in the feeding tank 3 is used for placing the test sample 4, the top end of the feeding tank 3 is provided with a test window 301 matched with the pendulum 102 of the pendulum body 1, the test window 301 is communicated with the cavity in the feeding tank 3, the feeding tank 3 is provided with a supporting mechanism 309 matched with the lower surface of the test sample 4, and the test window 301 is matched with the upper surface of the test sample 4.

[0040] Specifically, a plurality of test samples 4 are stacked in the cavity of the feeding tank 3. The front end surface of the feeding tank 3 is hingedly provided with a door plate 5, the upper end of the door plate 5 is provided with a discharge port 501 matched with the uppermost test sample 4 in the feeding tank 3. The rear end surface of the feeding tank 3 is welded with a second extension bracket 306, the second extension bracket 306 is fixedly provided with a second air cylinder 307, the output end of the second air cylinder 307 is provided with a second pushing mechanism 308, and the second pushing mechanism 308 is matched with the rear end surface of the test sample 4 after penetrating through the through hole of the feeding tank 3. The discharge port 501 matched with the top test sample 4 is arranged on the door plate 5 of the pavement skid resistance test device, the test sample 4 after the test is pushed out from the discharge port 501 by the second pushing mechanism 308, and the discharge is facilitated. In order to prevent the test sample 4 from falling from the discharge port 501, the maximum stroke of the second air cylinder 307 is limited, so that the test sample 4 can only be leaked out from the discharge port 501 by half.

[0041] The supporting mechanism 309 comprises a first horizontal plate 30901, a second horizontal plate 30902 and a supporting plate 30908, the second horizontal plate 30902 is fixedly arranged in the cavity of the feeding tank 3 through a second supporting column 30909, the first horizontal plate 30901 is fixedly arranged on the second horizontal plate 30902 through a first supporting column 30907, a lead screw 30906 is rotatably arranged between the first horizontal plate 30901 and the second horizontal plate 30902, and the number of the lead screw 30906 is two. A driving plate 30904 is movably arranged between the first horizontal plate 30901 and the second horizontal plate 30902, the driving plate 30904 is threadedly matched with the lead screw 30906, a connecting column 30903 is fixedly arranged on the driving plate 30904, the connecting column 30903 passes through the first horizontal plate 30901 upwards and is provided with the supporting plate 30908, and the supporting plate 30908 is matched with the lower surface of the test sample 4. The lead screw 30906 is driven by a motor 30905 at the bottom end of the second horizontal plate 30902. One of the lead screws 30906 can be replaced by a guide rod to save cost. The feeding tank 3 of the pavement skid resistance test device is provided with the supporting mechanism 309, the supporting mechanism 309 can lift the test sample 4, so that the test sample 4 can be matched with the test window 301 at the top end of the feeding tank 3.

[0042] The first extension support 302 is fixedly arranged on the side wall of the feeding box 3, and the first air cylinder 303 is fixedly arranged on the first extension support 302; the output end of the first air cylinder 303 is provided with a wedge block 305 through a first pushing mechanism 304, and the wedge block 305 is matched with the lower surface of the highest layer of test samples 4.

[0043] The upper surface of the wedge block 305 is a slope, and the lower surface of the wedge block 305 is a plane. The lower surface of the test sample 4 is provided with a slope clamping groove 401 matched with the wedge block 305.

[0044] The wedge block 305 matched with the slope clamping groove 401 at the bottom of the top layer of test samples 4 is arranged on the pavement anti-skid performance testing device, so that the test sample 4 is prevented from swinging accidentally during the test.

[0045] The first pushing mechanism 304 comprises a bottom plate 30401, a guide rod 30402, a spring 30403 and a buffer block 30404, the bottom plate 30401 is fixed on the output shaft of the air cylinder, the guide rod 30402 is fixedly arranged on the bottom plate 30401, the buffer block 30404 is movably arranged on the guide rod 30402, and the spring 30403 matched with the buffer block 30404 and the bottom plate 30401 is sleeved on the guide rod 30402; the first pushing mechanism 304 and the second pushing mechanism 308 are the same in structure. The first pushing mechanism 304 and the second pushing mechanism 308 have a certain buffering effect, so as to prevent the air cylinder from damaging the test sample 4.

[0046] The use process of the pavement anti-skid performance testing device is as follows:

[0047] Step one, the slope clamping groove 401 is arranged on the lower surface of the test sample 4;

[0048] Step two, the door plate 5 of the feeding box 3 is opened, and a plurality of test samples 4 to be tested are stacked on the supporting mechanism 309 in the feeding box 3;

[0049] Step three, the motor 30905 on the supporting mechanism 309 is actuated, the supporting plate 30908 is driven to move upwards through the lead screw 30906, the supporting plate 30908 drives the whole stack of test samples 4 to move upwards, so that the top layer of test samples 4 approaches the test window 301 at the top end of the feeding box 3;

[0050] Step four, the first air cylinder 303 on the first extension support 302 inserts the wedge block 305 into the slope clamping groove 401 of the top layer of test samples 4 through the first pushing mechanism 304, so that the upper surface of the top layer of test samples 4 is tightly attached to the test window 301 and is firmly fixed;

[0051] Step five, the test of the current test sample 4 is completed by the pendulum 102 of the pendulum instrument body 1;

[0052] Step six, the first cylinder 303 drives the wedge block 305 to retract, the second cylinder 307 on the second extension support 306 pushes the top test sample 4 out of the discharge port 501 on the door plate 5 through the second pushing mechanism 308;

[0053] Step seven, the test sample 4 at the discharge port 501 is manually taken out, the support mechanism 309 is started again, so that the top surface of the remaining test sample 4 approaches the test window 301 to continue the test.

[0054] The above-described embodiments are only used to describe the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A device for testing the skid resistance of a road surface, characterised in that: The utility model provides a swing type instrument, including swing type instrument body (1), mounting plate (2) and feed tank (3), the rear end of feed tank (3) is fixedly provided with mounting plate (2), swing type instrument body (1) is fixedly provided at the top of mounting plate (2), the cavity for placing test sample (4) is seted up in feed tank (3), the top of feed tank (3) is provided with the test window (301) of cooperation with the pendulum bob (102) of swing type instrument body (1), the test window (301) is communicated with the cavity in feed tank (3), support mechanism (309) is provided in feed tank (3) and is cooperated with the lower surface of test sample (4), the test window (301) is cooperated with the upper surface of test sample (4), a plurality of test samples (4) are stacked in the cavity of feed tank (3), the front end surface of feed tank (3) is hinged with door plate (5) through hinge, the upper of door plate (5) is provided with discharge port (501), the discharge port (501) is cooperated with the uppermost test sample (4) in feed tank (3), the rear end surface of feed tank (3) is welded with second extension support (306), second cylinder (307) is fixedly provided on second extension support (306), second pushing mechanism (308) is provided on the output end of second cylinder (307), second pushing mechanism (308) passes through the through -hole on feed tank (3) and is cooperated with the rear end surface of test sample (4), support mechanism (309) includes first horizontal plate (30901), second horizontal plate (30902) and support plate (30908), second horizontal plate (30902) is fixedly provided in the cavity of feed tank (3) through second support column (30909), first horizontal plate (30901) is fixedly provided on second horizontal plate (30902) through first support column (30907), first horizontal plate (30901) and second horizontal plate (30902) rotatably provided with lead screw (30906) between, first horizontal plate (30901) and second horizontal plate (30902) are movably provided with driving plate (30904) between, driving plate (30904) is cooperated with lead screw (30906) threadedly, connecting column (30903) is fixedly provided on driving plate (30904), connecting column (30903) is provided with support plate (30908) after passing through first horizontal plate (30901) upwards, support plate (30908) is cooperated with the lower surface of test sample (4), lead screw (30906) is driven through the motor (30905) of second horizontal plate (30902) bottom.The side wall of the feeding tank (3) is fixedly provided with a first extension support (302), and the first extension support (302) is fixedly provided with a first air cylinder (303). The output end of the first air cylinder (303) is provided with a wedge block (305) through a first pushing mechanism (304). The wedge block (305) cooperates with the lower surface of the highest layer of test samples (4), and the wedge block (305) cooperates with the upper surface of the second highest layer of test samples (4).

2. The pavement skid-resistance testing device of claim 1, wherein: The upper surface of the wedge (305) is inclined, and the lower surface of the wedge (305) is flat.

3. The pavement skid-resistance testing device of claim 2, wherein: The lower surface of the test sample (4) is provided with an inclined groove (401) matched with the wedge (305).

4. The pavement skid-resistance testing device of claim 1, wherein: The bottom end of the mounting plate (2) is fixedly provided with a supporting leg (201), and the upper surface of the mounting plate (2) is provided with a positioning groove (202) matched with the supporting leg (101) of the pendulum instrument body (1).

5. The pavement skid-resistance testing device of claim 1, wherein: The first pushing mechanism (304) comprises a bottom plate (30401), a guide rod (30402), a spring (30403) and a buffer block (30404), the bottom plate (30401) is fixed on the output shaft of the air cylinder, the guide rod (30402) is fixedly arranged on the bottom plate (30401), the buffer block (30404) is movably arranged on the guide rod (30402), and the spring (30403) matched with the buffer block (30404) and the bottom plate (30401) is sleeved on the guide rod (30402); the first pushing mechanism (304) and the second pushing mechanism (308) are the same in structure.

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