Deflection detection equipment for highway subgrade pavement design

Abstract

The utility model discloses deflection detection equipment for highway subgrade pavement design. The deflection detection equipment comprises a rear lever; the supporting seat is hinged to the middle of the rear lever; the horizontal plate is fixedly connected to the bottom of the rear lever; the supporting legs are arranged on the horizontal plate in a threaded mode and used for adjusting the overall levelness and height of the equipment; the contact rod is arranged at the rear end of the rear lever; and the front lever is arranged at the front end of the rear lever. According to the deflection detection equipment for highway subgrade and pavement design, the clamping plate I and the clamping plate II are additionally arranged on the gauge stand, and the gauge stand is fixed to the rear lever through clamping of the clamping plate I and the clamping plate II, so that rapid assembly is achieved, overall transfer of subsequent equipment is facilitated, and the detection efficiency is greatly improved; and the front lever and the rear lever are hinged, so that a traditional bolt fixing mode is replaced, and the equipment can be folded and stored so as to be quickly stored.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface detection equipment, in particular to a deflection detection device for highway roadbed and pavement design. Background Art

[0002] During highway construction and maintenance, the quality of the roadbed and pavement directly affects the service life of the road and driving safety. Deflection detection is one of the important means to evaluate the bearing capacity and structural integrity of the pavement, and is crucial to ensuring road quality.

[0003] Currently, traditional deflection detection equipment, such as the Beckmann beam pavement deflectometer, mainly consists of a Beckmann beam, a dial indicator and a meter stand. Although it can provide accurate detection results, due to its design limitations, namely the meter stand is separated from the pavement deflectometer body, when switching between different measuring points on the same road, the meter stand needs to be frequently relocated and adjusted, which not only prolongs the detection time but also reduces work efficiency.

[0004] Therefore, there is an urgent need to provide a deflection detection device for assembled highway subgrade and pavement design. Utility Model Content

[0005] In order to overcome the shortcomings of the traditional Beckmann beam method pavement deflectometer, in which the meter frame is separated from the pavement deflectometer body, and each test requires relocation and debugging, which prolongs the time required for testing and thus affects work efficiency, the utility model provides an assembled deflection detection device for highway subgrade and pavement design.

[0006] To solve the above-mentioned problem, the present invention adopts the following technical solution: a deflection detection device for highway subgrade and pavement design, comprising a rear lever; a support seat, the support seat being hinged to the middle part of the rear lever; a horizontal plate, the horizontal plate being fixedly connected to the bottom of the rear lever; a support foot, the support foot being threadedly arranged on the horizontal plate for adjusting the overall level and height of the device; a contact rod, the contact rod being arranged at the rear end of the rear lever; a front lever, the front lever being arranged at the front end of the rear lever, and the same fixing hole being provided at the junction of the front lever and the rear lever; a probe, the probe being mounted at the front end of the front lever; and a meter stand, the meter stand being arranged behind the rear lever. ; an adjustment frame, the adjustment frame is arranged on the table frame; a dial indicator, the dial indicator is assembled on the adjustment frame; it also includes a support plate, the support plate is arranged at the front end of the rear lever; a connecting shaft, the connecting shaft is fixedly connected to the support plate; a connecting plate, the connecting plate is arranged at the rear end of the front lever, and the front lever and the rear lever are hinged by cooperating with the connecting plate and the connecting shaft; a threaded column, the threaded column is arranged at the lower end of the table frame; a splint I and a splint II, the splint I and the splint II are respectively rotatably mounted on the threaded column, and the splint I and the splint II can be fixed together by snapping, so as to fix the table frame on the rear lever.

[0007] Furthermore, it also includes a connecting plate, which is slidably mounted on the rear lever; a moving wheel, which is mounted at both ends of the connecting plate to assist in moving the equipment; and a threaded rod, which is rotatably arranged on the rear lever and threadedly connected to the connecting plate, so that the position of the connecting plate can be adjusted by rotating the threaded rod.

[0008] Furthermore, it also includes a fixing plate, which is located on both sides of the threaded rod; and a handle, which is installed on the fixing plate.

[0009] Furthermore, it also includes two screw rods, which are rotatably mounted on the sides of the rear lever and the front lever respectively; a support plate, which is threadedly mounted on the screw rods, and a clamping rod matching the fixing hole is fixedly connected to the support plate; and a knob, which is arranged on the screw rod.

[0010] Furthermore, a rubber sleeve is included, and the rubber sleeve is arranged on the surface of the handle.

[0011] Furthermore, a level is also included, and the level is arranged in the middle of the rear lever.

[0012] Furthermore, an anti-skid pad is included, and the anti-skid pad is arranged on the side of the supporting foot that contacts the road surface.

[0013] Compared with the prior art, the utility model has the following technical effects: 1. The deflection detection equipment for highway subgrade and pavement design, by adding splint I and splint II to the meter frame, uses splint I and splint II to engage with the meter frame to fix the meter frame to the rear lever, thereby achieving quick assembly, facilitating subsequent overall transfer of the equipment, and greatly improving the detection efficiency. In addition, the front lever and the rear lever are articulated by cooperating with the connecting plate and the connecting shaft, thereby replacing the traditional bolt fixing method, so that the equipment can be folded and stowed for quick storage.

[0014] 2. By adding lifting wheels, the equipment can be moved without additional manpower, making it easy to quickly transfer the equipment between different measuring points.

[0015] 3. Use the knob, screw, support plate and clamping rod to form a fixed assembly to fix the rear lever and the front lever together to ensure the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the rear lever, front lever and measuring head of the utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the support seat, horizontal plate and support legs of the utility model.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the support plate, clamping rod and knob of the utility model.

[0021] Figure 6 It is a three-dimensional cross-sectional view of the support plate, connecting shaft and connecting plate of the utility model.

[0022] Figure 7 It is a three-dimensional cross-sectional view of the watch frame, splint I and splint II of the utility model.

[0023] In the above drawings: 1: rear lever, 2: support base, 3: horizontal plate, 4: support foot, 5: contact rod, 6: front lever, 7: measuring head, 8: fixing hole, 9: table stand, 10: adjustment stand, 11: dial indicator, 12: support plate, 13: connecting shaft, 14: connecting plate, 15: threaded column, 16: splint I, 17: splint II, 18: connecting plate, 19: moving wheel, 20: threaded rod, 21: fixing plate, 22: handle, 23: support plate, 24: clamping rod, 25: knob, 26: screw rod, 27: rubber sleeve, 28: spirit level, 29: anti-slip pad. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 , a deflection detection device for highway roadbed and pavement design, comprising: a rear lever 1, the support seat 2 is hinged at the middle of the rear lever 1, the horizontal plate 3 is fixedly connected to the bottom of the rear lever 1, the three support feet 4 are threadedly arranged on the horizontal plate 3, for adjusting the overall level and height of the device, the anti-slip pad 29 is arranged on the side of the support foot 4 in contact with the road surface, for increasing the friction between the support foot 4 and the road surface to prevent the device from sliding during the detection process, the spirit level 28 is arranged in the middle of the rear lever 1, for helping the operator to adjust the device to a horizontal state, by observing the state of the spirit level 28, the support foot 4 can be quickly adjusted to put the device in the best detection position, the contact rod 5 is arranged at the rear end of the rear lever 1, the front lever 6 is arranged at the front end of the rear lever 1, and the front lever 6 is provided with the same fixing hole 8 at the junction of the rear lever 1, and the probe 7 is installed at the front end of the front lever 6; table The frame 9 is provided at the rear of the rear lever 1, the adjustment frame 10 is provided on the frame 9, the dial indicator 11 is assembled on the adjustment frame 10, the support plate 12 is provided at the front end of the rear lever 1, the connecting shaft 13 is fixedly connected to the support plate 12, and the connecting plate 14 is provided at the rear end of the front lever 6. The connecting plate 14 cooperates with the connecting shaft 13 to realize the hinge connection between the front lever 6 and the rear lever 1, thereby replacing the traditional bolt fixing method, so that the equipment can be folded and quickly stored, and is more convenient to use. The threaded column 15 is provided at the lower end of the frame 9; the splint I 16 and the splint II 17, the splint I 16 and the splint II 17 are respectively rotatably mounted on the threaded column 15, and the splint I 16 and the splint II 17 can be fixed together by snapping, thereby fixing the frame 9 on the rear lever 1, realizing quick assembly, which is convenient for subsequent movement of the entire equipment.

[0026] After the measuring point is selected, ensure that the center distance of the measured rear axle double wheel gap of the car is no more than 10 cm from the measuring point. Then, move the deflection detection equipment to the road surface so that the probe 7 is located at the center of the double tire gap, ensuring that it is perpendicular to the center point of the axle, and rotate the support foot 4 to adjust the equipment to a horizontal state. Next, use the clamping plate I 16 and the clamping plate II 17 to fix the meter frame 9 to the rear end of the rear lever 1. Then, adjust the dial indicator 11 to the appropriate height so that the contact of the dial indicator 11 is against the contact rod 5, and adjust the dial indicator 11 to zero. The assembly and adjustment of the deflection detection equipment are completed. After the test, let the car move forward. As the deformation of the road surface increases, the dial indicator 11 moves accordingly. When the needle rotates to the maximum value, quickly read the initial reading. The car continues to move forward and the needle will rotate in the opposite direction. After the car drives out of the deflection influence radius and the needle rotates stably, read the final reading. Based on the recorded reading, calculate the road surface elastic deflection value. When the equipment needs to be moved to the next road surface measuring point later, since the meter frame 9 is fixed to the rear lever 1 through the splint I 16 and the splint II 17, the detection equipment can be directly transferred as a whole, without the need for reassembly and debugging.

[0027] Example 2: Based on Example 1, please refer to Figure 2 and Figure 3 , also includes: a connecting plate 18, which is slidably mounted on the rear lever 1, and the moving wheels 19 are mounted on the front and rear ends of the connecting plate 18 to assist in moving the equipment, the threaded rod 20 is rotatably set on the rear lever 1 and is threadedly connected to the connecting plate 18, so that the position of the connecting plate 18 can be adjusted by rotating the threaded rod 20, the fixed plate 21 is located on the front and rear sides of the threaded rod 20, and the handle 22 is mounted on the fixed plate 21, providing a better grip point for carrying the entire equipment, and the rubber sleeve 27 is provided on the surface of the handle 22 to increase the grip comfort of the handle 22, prevent the hand from sliding, provide a better grip, and reduce hand fatigue during transportation.

[0028] When the device needs to be moved to the next road surface measuring point, the threaded rod 20 is rotated to lower the connecting plate 18 so that the moving wheel 19 contacts the road surface to assist the movement of the device. Then, the handle 22 is pulled up to pull the device to move to the next measuring point, which greatly improves work efficiency. In subsequent inspections, the moving wheel 19 can be retracted by rotating the threaded rod 20 in the opposite direction.

[0029] See also Figure 4 and Figure 5, and also includes: two screw rods 26, the two screw rods 26 are rotatably installed on the sides of the rear lever 1 and the front lever 6 respectively, a support plate 23, the support plate 23 is threadedly installed on the screw rod 26, and the support plate 23 is fixedly connected with a clamping rod 24 matching the fixing hole 8; a knob 25, the knob 25 is set on the screw rod 26, and by rotating the knob 25, the screw rod 26 drives the support plate 23 to approach the fixing hole 8 until the clamping rod 24 is inserted into the fixing hole 8, thereby fixing the rear lever 1 and the front lever 6 together to ensure the stability of the equipment.

[0030] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A deflection detection device for highway subgrade and pavement design, comprising: rear lever (1); A support seat (2), wherein the support seat (2) is hinged to the middle portion of the rear lever (1); A horizontal plate (3), the horizontal plate (3) being fixedly connected to the bottom of the rear lever (1); Support legs (4), the support legs (4) being threadedly mounted on the horizontal plate (3) to adjust the overall level and height of the equipment; A contact rod (5), the contact rod (5) being arranged at the rear end of the rear lever (1); A front lever (6), the front lever (6) being arranged at the front end of the rear lever (1), and a same fixing hole (8) being provided at the junction of the front lever (6) and the rear lever (1); A probe (7), the probe (7) being mounted on the front end of the front lever (6); A meter frame (9), the meter frame (9) being arranged behind the rear lever (1); an adjustment frame (10), the adjustment frame (10) being arranged on the meter frame (9); a dial indicator (11), wherein the dial indicator (11) is mounted on the adjustment frame (10); Its characteristics include: A support plate (12), the support plate (12) being arranged at the front end of the rear lever (1); A connecting shaft (13), wherein the connecting shaft (13) is fixedly connected to the supporting plate (12); A connecting disk (14) is provided at the rear end of the front lever (6), and the front lever (6) and the rear lever (1) are hingedly connected by the connecting disk (14) and the connecting shaft (13); A threaded column (15), the threaded column (15) being arranged at the lower end of the watch frame (9); Clamp I (16) and clamp II (17), said clamp I (16) and said clamp II (17) are respectively rotatably mounted on said threaded column (15), said clamp I (16) and said clamp II (17) can be fixed together by snapping, thereby fixing said watch frame (9) on said rear lever (1).

2. A deflection detection device for highway subgrade and pavement design according to claim 1, characterized in that include: a connecting plate (18), wherein the connecting plate (18) is slidably mounted on the rear lever (1); Moving wheels (19), the moving wheels (19) are installed at both ends of the connecting plate (18) to assist the movement of the equipment; A threaded rod (20) is rotatably arranged on the rear lever (1) and is threadably connected to the connecting plate (18), so that the position of the connecting plate (18) can be adjusted by rotating the threaded rod (20).

3. A deflection detection device for highway subgrade and pavement design according to claim 2, characterized in that include: A fixing plate (21), the fixing plate (21) being located on both sides of the threaded rod (20); A handle (22), wherein the handle (22) is mounted on the fixing plate (21).

4. A deflection detection device for highway subgrade and pavement design according to claim 3, characterized in that include: Two screw rods (26), the two screw rods (26) are rotatably mounted on the sides of the rear lever (1) and the front lever (6) respectively; A support plate (23), wherein the support plate (23) is threadedly mounted on the screw rod (26), and a clamping rod (24) matching the fixing hole (8) is fixedly connected to the support plate (23); A knob (25) is provided on the screw rod (26).

5. A deflection detection device for highway subgrade and pavement design according to claim 4, characterized in that include: A rubber sleeve (27) is provided on the surface of the handle (22).

6. A deflection detection device for highway subgrade and pavement design according to claim 5, characterized in that include: A level (28) is provided in the middle of the rear lever (1).

7. A deflection detection device for highway subgrade and pavement design according to claim 6, characterized in that include: An anti-skid pad (29) is provided on a side of the support foot (4) in contact with the road surface.

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