Highway topographic measurement device

Abstract

The utility model discloses a highway topographic measurement device, which is composed of a frame, the frame comprises an annular bottom ring, an upper outer ring and an upper inner ring, the upper outer ring and the upper inner ring are positioned above the annular bottom ring, and the upper outer ring and the upper inner ring are coaxially arranged to form an annular slot. A plurality of supporting rods are fixedly arranged on the bottom ring, and the tops of the supporting rods are inserted into the slots and fixedly connected with the upper outer ring and the upper inner ring but lower than the tops of the upper outer ring and the upper inner ring. A cylindrical wind shield is sleeved in the frame and can be inserted into the frame from top to bottom. A mounting plate is arranged at the top of the frame, fixedly connected with the upper inner ring and provided with distance measuring scale marks. A through hole is formed in the center of the mounting plate, the vertical shaft penetrates through the through hole, a cross rod is arranged at the top of the mounting plate, the bottom of the mounting plate is connected with a long-strip rectangular rotating plate, and the mounting plate and the rotating plate are connected through an overturning connecting structure capable of overturning by 180 degrees. A rubber strip is arranged at one end of the rotating plate, bristles are arranged at the other end of the rotating plate, and a lifting mechanism for adjusting lifting of the vertical shaft is further arranged on the mounting plate. According to the device, measuring tools can be integrated, sand can be efficiently and accurately laid, and the road terrain roughness measuring efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of topographic surveying technology, specifically to a highway topographic surveying device. Background Technology

[0002] After prolonged use and wear, the roughness of asphalt road surfaces gradually increases, so it is necessary to measure the road surface roughness regularly.

[0003] The current side-viewing method mainly uses the sand-laying method. First, the test point is shielded with a fence to prevent strong winds from affecting it. Then, the sand at the test point is cleaned with a brush. Then, standard sand grains are poured into the center. A rubber block is used to gently press the ground and draw circles from the inside out to flatten the standard sand into a circle. Finally, the diameter of the circular sand layer is measured to calculate the terrain roughness at the test point.

[0004] The tools used in the above methods are rather fragmented, including brushes, barriers, rubber blocks, and rulers, making them cumbersome to use and requiring a high level of skill from the operator. Because the sand-laying process requires starting lightly and gradually increasing pressure, lifting the sand off the ground before pressing it down, and creating a nearly circular sand layer, the measurement efficiency is not high. Experienced workers typically need 3-5 minutes to complete a measurement at a single point, and may even need to redo the sand if the layer isn't perfectly round. Since each measurement of road surface roughness requires testing multiple points, the measurement time is excessively long. Therefore, the efficiency of the existing measurement methods needs improvement.

[0005] Therefore, a highway topographic surveying device is designed that integrates the above-mentioned tools and has an efficient and accurate sand-laying structure, which can improve the efficiency of highway topographic roughness measurement. Utility Model Content

[0006] The purpose of this invention is to provide a highway topographic surveying device to solve the problems described in the background art.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A highway topographic surveying device includes a cylindrical frame. The frame includes an annular bottom ring, and an annular outer ring and an annular inner ring spaced above the bottom ring. The inner ring is located inside the outer ring and is coaxially aligned with it. An annular slot is formed between the outer and inner rings. Multiple vertically arranged support rods are fixedly fixed to the upper end face of the bottom ring at intervals. The tops of the support rods are inserted into the slot and fixedly connected to the outer and inner rings respectively. The tops of the support rods are lower than the tops of the outer and inner rings. A cylindrical windshield is fitted inside the frame. A limiting groove is formed at the bottom of the windshield wall. The windshield is inserted into the frame from top to bottom through the slot. Inserted into the limiting groove, the top of the frame is also horizontally provided with a long rectangular mounting plate. The two ends of the mounting plate are fixedly connected to the upper inner ring. The upper edge of the mounting plate is provided with a distance measuring scale line. A through hole is opened in the center of the mounting plate. A vertical shaft slides and rotates through the through hole. The top of the vertical shaft passes through the through hole and is provided with a crossbar. The upper part of the mounting plate is also provided with a lifting mechanism for adjusting the lifting of the vertical shaft. The bottom of the vertical shaft passes through the through hole and is provided with a long rectangular rotating plate. The rotating plate and the bottom of the vertical shaft are also connected by a flip connection structure. The rotating plate is set horizontally. The flip connection structure can fix the rotating plate to rotate 180°. One end of the rotating plate is provided with a long strip of rubber strip and the other end of the rotating plate is provided with bristles.

[0009] When using the above method, insert the windshield into the slot, lift the crossbar, and you can carry the entire device. After arriving at the measurement location, place the device on the road surface, pull the windshield upwards, and slightly rotate the windshield to misalign the limiting groove and the support rod, then place the windshield into the slot of the frame.

[0010] The rotating plate is flipped over by the flip connection structure so that the side of the rotating plate with bristles faces downward and the rotating plate is fixed. Then, by adjusting the lifting mechanism, the bristles are made to contact the road surface at a suitable height. The horizontal bar is rotated quickly, the horizontal bar drives the vertical shaft to rotate, and the vertical shaft drives the rotating plate. The rotating plate sweeps the road surface and removes dust from the rough road surface. Since the windshield is moved up to expose the frame, the dust thrown out can be discharged through the frame.

[0011] After the dust is cleaned, the rotating plate is flipped over using the flip-connecting structure, so that the side with the rubber strip faces downwards and the plate is fixed in place. Then, standard sand is poured directly below the vertical axis, piling up into a cone shape. The windshield is then lowered to cover the entire frame sidewall to prevent wind damage. The rubber strip is adjusted to maintain a first height relative to the ground using the lifting mechanism. The crossbar is slowly rotated, thus slowly moving the rotating plate. The rotating plate rotates circumferentially, pushing the standard sand from a cone shape to a cylindrical shape. The rubber strip is then adjusted to a second height using the lifting mechanism, which is lower than the first height. The rotating plate is then slowly driven at the second height, and so on, until the rubber strip touches the ground at the Nth height. The vertical axis is then lowered by 0.1–0.3 mm, allowing the rubber strip to lightly press against the road surface. The first height, second height… Nth height, and the set interval can be set to differ by 0.2–0.4 mm; that is, the first height is 30 mm, the second height is 29.6–29.8 mm, and so on.

[0012] By lowering the rotating plate evenly and keeping its height consistent during the leveling process, the standard sand can be accurately spread into a near-circular shape. Finally, the diameter of the circular sand layer can be directly read from the distance measuring scale on the mounting plate.

[0013] This device integrates the fragmented tools used in the sand-spreading method and, through its unique design structure, can efficiently and accurately spread sand into a circle, thereby improving the efficiency of highway terrain roughness measurement.

[0014] A further technical solution is that the lifting mechanism includes a slide rod vertically fixed to the upper surface of the mounting plate, with at least two slide rods spaced apart. The lifting mechanism also includes a screw rod vertically fixed to the upper surface of the mounting plate, with an adjusting nut screwed onto the screw rod. The lifting mechanism also includes a horizontally arranged lifting plate, with both the slide rod and the screw rod slidably passing through the lifting plate. The adjusting nut is located below the lifting plate. The top of the slide rod is also provided with a limiting block to prevent the lifting plate from detaching upwards. A horizontal bar is located above the lifting plate. The vertical shaft rotatably passes through the lifting plate, preventing the vertical shaft from sliding up and down within the lifting plate.

[0015] When using the above scheme, the vertical sliding of the lifting plate is limited by setting a sliding rod, and the height of the lifting plate is controlled by adjusting the structure of the nut and screw. Adjusting the nut's upward movement within the screw lifts the lifting plate upward, while adjusting the nut's downward movement allows the lifting plate to descend under gravity. The vertical lifting operation of the lifting plate can be converted into a rotational operation of the adjusting nut, enabling high-precision control of the lifting plate's movement.

[0016] A further technical solution is that a vertically installed height measuring ruler is fixed on the upper surface of the mounting plate, and the height measuring ruler is located next to the lifting plate.

[0017] When using the above method, by setting a height measuring ruler, the lifting height of the lifting platform can be accurately determined, which is beneficial for controlling the lifting accuracy.

[0018] A further technical solution is that the upper end face of the lifting plate is provided with a through hole, and a bearing is fixedly embedded in the through hole. The vertical shaft passes through the bearing and cannot move up and down in the bearing.

[0019] When using the above scheme, the bearing mounting structure is more conducive to the rotation of the vertical shaft.

[0020] A further technical solution is that the flip connection structure includes a vertical plate fixed to the bottom of the vertical shaft. The vertical plate is vertically arranged, and a threaded hole penetrating the vertical plate is opened in the lower middle section of the vertical plate. A bearing seat is fixed to the bottom of the vertical plate, and a horizontally arranged rotating shaft is fixed in the bearing seat. A bushing is fixed to the side wall of the rotating plate. The bushing is rotatably sleeved on the rotating shaft. The rotating plate is rotatably connected to the rotating shaft through the bushing. Two through positioning holes are also opened on the rotating plate. The positioning holes are symmetrically arranged with the central axis of the rotating shaft as the center of symmetry. When the rotating plate is rotated to the vertical state, the positioning holes are exactly aligned with the threaded holes, and the rotating plate is exactly in contact with the vertical plate. Positioning bolts are slidably inserted in the positioning holes and screwed into the threaded holes.

[0021] When using the above scheme, the position of the rotating plate is restricted by the mutual contact between the vertical plate and the rotating plate, and the rotating plate is fixed by the connection of the positioning hole and the threaded hole. This flip connection structure is simple, easy to implement and easy to use.

[0022] A further technical solution is to provide a handle on the upper end of the crossbar, away from the vertical axis.

[0023] A further technical solution is to mount the handle on the crossbar, with the handle's rotation axis set vertically.

[0024] A further technical solution is that the number of support rods is four, and the four support rods are arranged at equal angular intervals.

[0025] A further technical solution is to make the windshield from a transparent material.

[0026] The beneficial effects of this utility model are as follows:

[0027] 1. Precise sand spreading: By flipping the rotating plate, adjusting the lifting mechanism, and gradually lowering the height of the rotating plate, the spreading shape of the standard sand can be precisely controlled to ensure that the sand is spread in a circle, thus improving the accuracy of measurement.

[0028] 2. Integrated Design: The fragmented tools required for the sand-laying method are integrated into one unit, making it not only easy to carry but also standardizing the operating procedures.

[0029] 3. High-efficiency measurement: The special design structure makes the sand-laying process efficient and accurate, significantly improving the measurement efficiency of highway terrain roughness. Attached Figure Description

[0030] Figure 1 A 3D schematic diagram of the fit between the frame and the windshield (parts at the top of the mounting plate are hidden);

[0031] Figure 2 This is a front view of the device (windshield omitted);

[0032] Figure 3 for Figure 2 Rear view;

[0033] Figure 4 for Figure 2 Top view;

[0034] Figure 5 for Figure 2 Sectional view along line AA;

[0035] Figure 6 for Figure 5 A schematic diagram of the rotating plate after it has been flipped.

[0036] In the diagram, 1. bottom ring, 2. support rod, 3. upper outer ring, 4. upper inner ring, 5. slot, 6. windshield, 7. limiting groove, 8. mounting plate, 9. through hole, 10. sliding rod, 11. limiting block, 12. lifting plate, 13. screw, 14. adjusting nut, 15. bearing, 16. vertical shaft, 17. horizontal bar, 18. handle, 19. vertical plate, 20. rotating plate, 21. brush bristles, 22. rubber strip, 23. positioning hole, 24. positioning bolt, 25. height measuring ruler, 26. shaft seat, 27. rotating shaft, 28. bushing, 29. threaded hole, 30. distance measuring scale line. Detailed Implementation

[0037] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0038] See Figures 1 to 6 A highway topographic surveying device includes a cylindrical frame. The frame includes an annular bottom ring 1, and an annular upper outer ring 3 and an annular upper inner ring 4 spaced above the bottom ring 1. The upper inner ring 4 is disposed inside the upper outer ring 3 and is coaxially arranged with the upper outer ring 3. An annular slot 5 is formed between the upper outer ring 3 and the upper inner ring 4. Four vertically arranged support rods 2 are also fixedly fixed at equal angles on the upper end face of the bottom ring 1. The tops of the support rods 2 are inserted into the slot 5 and fixedly connected to the upper outer ring 3 and the upper inner ring 4 respectively. The tops of the support rods 2 are lower than the tops of the upper outer ring 3 and the upper inner ring 4.

[0039] The frame is also fitted with a cylindrical windshield 6. The bottom of the windshield 6 has a limiting groove 7. The windshield 6 is inserted into the frame from top to bottom through the slot 5, and the support rod 2 is inserted into the limiting groove 7.

[0040] Preferably, the windshield 6 is made of transparent material, preferably PC transparent plastic sheet.

[0041] The top of the frame is also horizontally provided with a long rectangular mounting plate 8. The two ends of the mounting plate 8 are fixedly connected to the upper inner ring 4 respectively. The upper edge of the mounting plate 8 is provided with a distance measuring scale line 30. A through hole 9 is opened in the center of the mounting plate 8. A vertical shaft 16 is slidably and rotatably inserted through the through hole 9. The top of the vertical shaft 16 extends upward through the through hole 9 and is provided with a horizontal bar 17. A handle 18 is also provided on the side of the upper end of the horizontal bar 17 away from the vertical shaft 16. The handle 18 is rotatably installed on the horizontal bar 17. The rotation axis of the handle 18 is set vertically.

[0042] The upper end of the mounting plate 8 is also equipped with a lifting mechanism for adjusting the vertical shaft 16.

[0043] Specifically, the lifting mechanism includes three vertically fixed sliding rods 10 on the upper surface of the mounting plate 8, and a screw rod 13 also vertically fixed on the upper surface of the mounting plate 8. The three sliding rods 10 and the screw rod 13 are arranged at equal angles. An adjusting nut 14 is screwed onto the screw rod 13. The lifting mechanism also includes a horizontally arranged lifting plate 12. The sliding rods 10 and the screw rod 13 are slidably inserted into the lifting plate 12. The adjusting nut 14 is located below the lifting plate 12. A limiting block 11 is provided at the top of the sliding rods 10 to prevent the lifting plate 12 from falling upward. A horizontal bar 17 is located above the lifting plate 12. A vertical shaft 16 is rotatably inserted into the lifting plate 12, but the vertical shaft 16 cannot slide up and down within the lifting plate 12.

[0044] Specifically, the upper end face of the lifting plate 12 is provided with a through hole, in which a bearing 15 is fixedly embedded. The vertical shaft 16 passes through the bearing 15. The vertical shaft 16 itself is driven into the bearing 15 with frictional resistance. Two limiting rings are also provided on the vertical shaft 16 to clamp the bearing 15. The vertical shaft 16 cannot move up and down in the bearing 15.

[0045] The upper surface of the mounting plate 8 is also fixed with a vertically installed height measuring ruler 25, which is located on the side of the lifting plate 12.

[0046] The bottom of the vertical shaft 16 has a through hole 9 extending downwards and is provided with a long rectangular rotating plate 20. The rotating plate 20 and the bottom of the vertical shaft 16 are also connected by a flip connection structure. The rotating plate 20 is set horizontally, and the flip connection structure can fix the rotating plate 20 to rotate 180°. One end of the rotating plate 20 is provided with a long strip of rubber strip 22, and the other end of the rotating plate 20 is provided with bristles 21.

[0047] Specifically, the flip connection structure includes a vertical plate 19 fixed to the bottom of the vertical shaft 16. The vertical plate 19 is vertically arranged. A threaded hole 29 is opened in the lower section of the vertical plate 19. A bearing seat 26 is fixed at the bottom of the vertical plate 19. A horizontally arranged rotating shaft 27 is fixed in the bearing seat 26. A bushing 28 is fixed on the side wall of the rotating plate 20. The bushing 28 is rotatably sleeved on the rotating shaft 27. The rotating plate 20 is rotatably connected to the rotating shaft 27 through the bushing 28. Two through positioning holes 23 are also opened on the rotating plate 20. The positioning holes 23 are symmetrically arranged with the central axis of the rotating shaft 27 as the center of symmetry. When the rotating plate 20 is rotated to the vertical state, the positioning holes 23 are exactly aligned with the threaded holes 29, and the rotating plate 20 is exactly in contact with the vertical plate 19. A positioning bolt 24 is slidably inserted in the positioning hole 23 and screwed into the threaded hole 29.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A highway topographic surveying device, characterized in that: The system includes a cylindrical frame, comprising a circular bottom ring, and two circular outer and inner rings spaced above the bottom ring. The inner ring is located within the outer ring and is coaxial with it. A circular slot is formed between the outer and inner rings. Multiple vertically arranged support rods are fixedly mounted at intervals on the upper surface of the bottom ring. The tops of the support rods are inserted into the slot and fixedly connected to the outer and inner rings respectively. The tops of the support rods are lower than the tops of the outer and inner rings. A circular cylindrical windshield is fitted within the frame. A limiting groove is formed at the bottom of the windshield wall. The windshield is inserted into the frame from top to bottom through the slot, and the support rods are inserted into the limiting groove. In the middle, a long rectangular mounting plate is horizontally installed at the top of the frame. The two ends of the mounting plate are fixedly connected to the upper inner ring. The upper edge of the mounting plate has a distance measuring scale line. A through hole is opened at the center of the mounting plate. A vertical shaft slides and rotates through the through hole. The top of the vertical shaft extends upward through the through hole and has a crossbar. The upper part of the mounting plate also has a lifting mechanism for adjusting the height of the vertical shaft. The bottom of the vertical shaft extends downward through the through hole and has a long rectangular rotating plate. The rotating plate and the bottom of the vertical shaft are connected by a flip connection structure. The rotating plate is set horizontally. The flip connection structure can fix the rotating plate to rotate 180°. One end of the rotating plate has a long strip of rubber strip and the other end of the rotating plate has bristles.

2. The highway topographic surveying device according to claim 1, characterized in that: The lifting mechanism includes a slide rod vertically fixed to the upper surface of the mounting plate, with at least two slide rods spaced apart. The lifting mechanism also includes a screw rod vertically fixed to the upper surface of the mounting plate, with an adjusting nut screwed onto the screw rod. The lifting mechanism also includes a horizontally arranged lifting plate. The slide rod and screw rod are slidably inserted into the lifting plate. The adjusting nut is located below the lifting plate. The top of the slide rod is also provided with a limiting block to prevent the lifting plate from falling upward. A horizontal bar is located above the lifting plate. The vertical shaft is rotatably inserted into the lifting plate and cannot slide up and down in the lifting plate.

3. The highway topographic surveying device according to claim 2, characterized in that: A vertically installed height measuring ruler is also fixed to the upper surface of the mounting plate, located next to the lifting plate.

4. The highway topographic surveying device according to claim 3, characterized in that: The upper end face of the lifting plate is also provided with a through hole, and a bearing is fixedly embedded in the through hole. The vertical shaft passes through the bearing and cannot move up and down in the bearing.

5. A highway topographic surveying device according to claim 4, characterized in that: The flip-connection structure includes a vertical plate fixed to the bottom of a vertical shaft. The vertical plate is vertically arranged, and a threaded hole is opened in the lower middle section of the vertical plate. A bearing seat is fixed to the bottom of the vertical plate, and a horizontally arranged rotating shaft is fixed in the bearing seat. A bushing is fixed to the side wall of the rotating plate. The bushing is rotatably sleeved on the rotating shaft. The rotating plate is rotatably connected to the rotating shaft through the bushing. Two through positioning holes are also opened on the rotating plate. The positioning holes are symmetrically arranged with the central axis of the rotating shaft as the center of symmetry. When the rotating plate is rotated to the vertical state, the positioning holes are exactly aligned with the threaded holes, and the rotating plate is exactly in contact with the vertical plate. Positioning bolts are slidably inserted in the positioning holes and screwed into the threaded holes.

6. A highway topographic surveying device according to claim 1, characterized in that: A handle is also provided on the upper end of the crossbar, away from the vertical axis.

7. A highway topographic surveying device according to claim 6, characterized in that: The handle is mounted on the crossbar and the shaft of the handle is vertical.

8. A highway topographic surveying device according to claim 1, characterized in that: The number of support rods is four, and the four support rods are arranged at equal angular intervals.

9. A highway topographic surveying device according to claim 1, characterized in that: The windshield is made of transparent material.

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