A road surface evenness measuring instrument

Abstract

The application relates to a flatness measuring instrument for a road surface and relates to the technical field of measuring instruments, which comprises a bottom plate and a level meter, rotating rings are arranged at the bottom ends of the outer walls of four guide pipes, worm wheels are fixedly connected to the outer walls of the four rotating rings, worm gears are rotatably arranged between every two groups of the first rotating seats, driven gears are fixedly connected to one ends of the worm gears, driving gears are fixedly connected to one ends of the outer walls of the four rotating shafts, and first screws are threadedly arranged in the interiors of the four rotating rings. The application has the advantages that four rectangular array distributed guide pipes are combined with the first screws, the height of each supporting leg can be independently adjusted, different slopes and local concave-convex road surfaces can be adapted, when the supporting legs need to be adjusted, the driving gears, the driven gears, the worm gears and the worm wheels are mechanically driven, the screws are vertically lifted through the threads in the interiors of the rotating rings, and the height adjustment effect of the first screws is realized.

Description

Technical Field

[0001] This application relates to the field of measuring instrument technology, and in particular to a road surface smoothness measuring instrument. Background Technology

[0002] The smoothness of a road surface is related to the smoothness of its various structural layers. The smoothness of each layer will be cumulatively reflected on the road surface. Smoothness testing is a standardized measurement tool used to intermittently or continuously measure the unevenness of the road surface, which is an indicator of unevenness. It is an important part of road acceptance and maintenance.

[0003] However, the road surface smoothness measuring devices commonly available on the market lack an effective adjustment mechanism when faced with road surfaces of different slopes. Since different road sections may have various slope conditions such as uphill, downhill, or incline, the existing measuring devices cannot be adjusted accordingly based on the actual slope. In complex terrain, they are unable to meet the measurement needs of diverse slopes and cannot accurately reflect the actual smoothness of the road surface, thus affecting the road acceptance results. Utility Model Content

[0004] The purpose of this application is to provide a road surface smoothness measuring instrument with the advantages of easy adjustment of the measuring instrument angle, which makes it suitable for use in complex terrain. This solves the problem that existing measuring devices cannot be adjusted according to the actual slope, making it difficult to meet the measurement needs of diverse slopes in complex terrain, and thus failing to accurately reflect the actual smoothness of the road surface, thereby affecting the road acceptance results.

[0005] The road surface smoothness measuring instrument provided in this application adopts the following technical solution: A road surface smoothness measuring instrument includes a base plate and a level gauge. Four guide tubes arranged in a rectangular array are fixedly connected inside the base plate. Each of the four guide tubes has a groove at its bottom outer wall. A rotating ring is rotatably mounted at the bottom outer wall of each of the four guide tubes. A sliding strip is fixedly connected to the inner wall of each of the four rotating rings. A worm gear is fixedly connected to the outer wall of each of the four rotating rings. Multiple first rotating seats arranged in a rectangular array are fixedly connected to the bottom of the base plate. Each pair of worm gears is rotatably connected to one end of each worm gear. Four second rotating seats are fixedly connected to the outer wall of the base plate. Each of the four second rotating seats has a rotating shaft rotatably connected inside. Each of the four rotating shafts has a driving gear fixedly connected to one end of its outer wall. A rotating knob is fixedly connected to the end of each of the four rotating shafts away from the driving gear. Each of the four rotating rings has a first lead screw threaded inside. Each of the four first lead screws has a ball head fixedly connected to its bottom end. Each of the four ball heads has a grounding block rotatably connected to its bottom end. The level gauge is located at the upper end of the base plate.

[0006] By adopting the above technical solution, the guide tubes arranged in a rectangular array are combined with the first lead screw. Each outrigger can be independently adjusted in height to adapt to different slopes and local uneven road surfaces. When the outrigger needs to be adjusted, the rotary knob drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear drives the worm gear to rotate, and the rotation of the worm gear drives the rotation of the worm wheel. The rotation of the rotary knob is converted into the rotation of the worm wheel, which drives the rotation of the rotating ring. The internal thread of the rotating ring drives the lead screw to rise and fall vertically, realizing the height adjustment of the first lead screw. The ball head is rotated and connected to the grounding block, allowing the grounding block to be freely adjusted, thereby enhancing the grounding of the device and ensuring stability during use. The rectangular distribution of the four first lead screws forms a stable support, reducing swaying and ensuring the accuracy of measurements. The rotary knob is located on the outside of the base plate, allowing the operator to easily rotate and adjust it. The device converts rotational motion into the vertical rise and fall of the lead screw through mechanical transmission of the drive gear, driven gear, worm gear, and worm wheel, allowing the operator to easily adjust it to adapt to different road measurement operations.

[0007] Preferably, the upper end of the base plate has four guide grooves arranged in a rectangular array. Both sides of the upper end of the base plate are fixedly connected to third fixing seats. The two third fixing seats are threaded with second lead screws. One end of each of the two second lead screws is rotatably connected to a clamping plate. The bottom ends of the two clamping plates are fixedly connected to two guide blocks arranged in a mirror distribution. The ends of the two second lead screws away from the clamping plates are fixedly connected to a throttle handle.

[0008] By adopting the above technical solution, the threaded connection between the second lead screw and the third fixed seat forms a helical transmission mechanism. By rotating the handle, the clamping plate can be moved on the upper part of the base plate, which is compatible with different models of level gauges, improving the versatility of the equipment. Operators can fix and disassemble the level gauge by rotating the handle without the need for tools, thereby shortening the equipment debugging time.

[0009] Preferably, the level gauge includes a housing, a first level tube fixedly connected to the upper end of the housing, through holes provided on both sides of the housing, a second level tube fixedly connected to each of the two through holes, two mounting slots arranged in a mirror image on the upper end of the housing, a third level tube fixedly connected to each of the two mounting slots, and a laser emitter fixedly connected to both sides of the housing.

[0010] By adopting the above technical solution, the first horizontal tube is horizontally installed on the upper end of the shell and is used to measure the front and rear tilt of the base plate. The second horizontal tube is installed at an angle inside the through holes on both sides and is used to measure the horizontal angle of the device on the inclined road surface. The third horizontal tube is installed horizontally in the mounting groove and is used to measure the left and right tilt of the base plate. The laser emitters on both sides can emit laser lines, and the light is parallel to the ground and is used to measure the distance between the road surface and the light, thereby determining whether there are potholes on the road surface.

[0011] Preferably, all four sliders are slidably disposed inside the slide groove.

[0012] By adopting the above technical solution, the slide bar inside the rotating ring is rotatably set in the slide groove on the outer wall of the guide tube. Through the restriction of the slide groove and the slide bar, the rotating ring remains stable when rotating.

[0013] Preferably, the ends of the four rotating shafts away from the second rotating seat are rotatably connected to the base plate, the four driving gears mesh with the driven gears, and the four worms mesh with the worm wheel.

[0014] By adopting the above technical solution, the operator rotates a knob, which in turn drives the drive gear through a rotating shaft. The drive gear meshes with the driven gear, which in turn drives the driven gear. The driven gear is fixedly installed at one end of the worm, and its rotation simultaneously drives the worm. The worm meshes with a worm wheel, which in turn drives the worm wheel. The worm wheel is fixedly installed on the outer wall of the rotating ring, and its rotation drives the rotating ring. The rotation of the rotating ring, through its internal threads, drives the first lead screw, thereby completing the adjustment of the outrigger.

[0015] Preferably, all four first lead screws are slidably disposed inside the guide tube.

[0016] By adopting the above technical solution, all four first lead screws are slidably set inside the guide tube. The guide tube restricts the vertical stability of the first lead screws when they move up and down, thus ensuring the accuracy of the adjustment.

[0017] Preferably, all four guide blocks are slidably disposed inside the guide groove.

[0018] By adopting the above technical solution, four guide blocks are slidably set inside the guide groove to limit the left and right displacement of the clamping plate during movement, so that the level gauge can be kept in the center position at the top of the base plate during installation.

[0019] Preferably, the level gauge is fixedly mounted between two clamping plates, and the two clamping plates are in contact with both sides of the level gauge.

[0020] By adopting the above technical solution, when installing the level gauge, first place the level gauge on the upper part of the base plate and between the two clamping plates. Then, by rotating the handle, the two clamping plates are moved in opposite directions through the threaded rod and come into contact with both sides of the level gauge, thereby clamping the level gauge between the two clamping plates.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This road surface smoothness measuring instrument uses four independently adjustable lead screws to achieve rapid leveling of the instrument on roads with different slopes. The operator simply rotates a knob, which drives a worm gear mechanism via gear transmission to rotate the rotating ring, thereby controlling the raising and lowering of the lead screws. This ensures the level gauge remains horizontal, and the grounding block adapts to changes in road surface unevenness, ensuring support stability. The level gauge on the base plate uses a combination of a first, second, and third level tube and a laser emitter, capable of simultaneously detecting horizontal angles in the front-back, left-right, and tilt directions. Combined with the laser emitters on both sides, it emits laser lines parallel to the ground to measure the distance between the road surface and the light source, thus determining whether potholes exist. The device achieves fine-tuning of height through mechanical transmission, simplifying the operation process while improving measurement efficiency and accuracy. It is suitable for measuring the smoothness of various complex road surfaces in the field or construction sites. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the adjustment device structure of this application; Figure 3 This is a schematic diagram of the transmission device structure of this application; Figure 4 This is a schematic diagram of the support leg structure of the present application; Figure 5 This is a schematic diagram of the level gauge fixing device structure of this application; Figure 6 This is a schematic diagram of the level gauge structure of this application.

[0023] In the picture: 1. Base plate; 2. Level gauge; 201. Housing; 202. First level tube; 203. Through hole; 204. Second level tube; 205. Mounting groove; 206. Third level tube; 207. Laser emitter; 3. Guide tube; 4. Slide groove; 5. Rotating ring; 6. Sliding bar; 7. Worm gear; 8. First rotating seat; 9. Worm; 10. Driven gear; 11. Second rotating seat; 12. Rotating shaft; 13. Driving gear; 14. Rotary knob; 15. First lead screw; 16. Ball head; 17. Grounding block; 18. Guide groove; 19. Third fixed seat; 20. Second lead screw; 21. Clamping plate; 22. Guide block; 23. Turn handle. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0025] Example 1: A road surface smoothness measuring instrument, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a base plate 1 and a level gauge 2. Four guide tubes 3 arranged in a rectangular array are fixedly connected inside the base plate 1. These guide tubes 3 limit the stability of the outriggers during adjustment. Each guide tube 3 has a groove 4 at its bottom outer wall. A rotating ring 5 is rotatably mounted at the bottom outer wall of each guide tube 3. Sliding strips 6 are fixedly connected to the inner walls of each rotating ring 5. Worm gears 7 are fixedly connected to the outer walls of each rotating ring 5. Multiple first rotating seats 8 arranged in a rectangular array are fixedly connected to the bottom of the base plate 1. Worms 9 are rotatably mounted between each pair of first rotating seats 8. These pairs of first rotating seats 8 fix the position of the worm gears 9. A driven gear 10 is fixedly connected to one end of each worm gear 9. The outer wall of the base plate 1 is fixed... Four second rotating seats 11 are connected, and each of the four second rotating seats 11 is rotatably connected to a rotating shaft 12. The rotating shaft 12 is fixed to both sides of the base plate 1 through the four second rotating seats 11. One end of the outer wall of each of the four rotating shafts 12 is fixedly connected to a drive gear 13, and the end of each of the four rotating shafts 12 away from the drive gear 13 is fixedly connected to a rotating knob 14. By rotating the rotating knob 14, the drive gear 13 is driven to rotate, which in turn drives the driven gear 10 to rotate. The driven gear 10 drives the worm 9 to rotate, and the rotation of the worm 9 drives the rotation of the worm wheel 7, converting the rotational motion of the rotating knob 14 into the rotation of the worm wheel 7. The worm wheel 7 drives the rotation of the rotating ring 5, and the thread inside the rotating ring 5 drives the lead screw to rise and fall vertically, thereby realizing the height adjustment of the first lead screw 15.

[0026] Reference Figure 1 , Figure 4 and Figure 5Each of the four rotating rings 5 ​​has a first lead screw 15 threaded inside. A ball head 16 is fixedly connected to the bottom of each of the four first lead screws 15, and a grounding block 17 is rotatably connected to the bottom of each of the four ball heads 16. This rotatable connection between the ball head and the grounding block 17 allows the grounding block 17 to be freely adjusted, thereby increasing the grounding capability of the device and ensuring stability during use. A level gauge 2 is mounted on the upper end of the base plate 1. The upper end of the base plate 1 has four guide grooves 18 arranged in a rectangular array. Third fixing seats 19 are fixedly connected to both sides of the upper end of the base plate 1. A second lead screw 20 is threaded inside each of the two third fixing seats 19. Each of the two second lead screws 20 has a clamping plate 21 rotatably connected to one end. Each of the two clamping plates 21 has two guide blocks 22 fixedly connected to its bottom end in a mirror-like arrangement. The ends of the two second lead screws 20 away from the clamping plates 21 are fixedly connected to a handle 23. The threaded connection between the second lead screws 20 and the third fixed seat 19 forms a helical transmission mechanism. By rotating the handle 23, the clamping plate 21 can be moved on the upper end of the base plate 1, which is compatible with different models of level gauges 2, improving the versatility of the equipment. Operators can fix and disassemble the level gauge 2 by rotating the handle 23 without the need for tools, thereby shortening the equipment debugging time.

[0027] Example 2: A road surface smoothness measuring instrument, referring to... Figure 2 , Figure 3 and Figure 6The level gauge 2 includes a housing 201. A first level tube 202 is fixedly connected to the upper end of the housing 201. The first level tube 202 is horizontally installed on the upper end of the housing 201 and is used to measure the front-back tilt of the base plate 1. Through holes 203 are provided on both sides of the interior of the housing 201. A second level tube 204 is fixedly connected inside each of the two through holes 203. The second level tube 204 is installed at an angle inside the two through holes 203 and is used to measure the horizontal angle of the device on a sloping road surface. Two mirror-distributed mounting slots 205 are provided on the upper end of the housing 201. Each mounting slot 205 has a third horizontal tube 206 fixedly connected inside. The third horizontal tube 206 is installed horizontally inside the mounting slot 205 and is used to measure the left and right tilt of the base plate 1. Laser emitters 207 are fixedly connected to both sides of the outer casing 201. The laser emitters 207 on both sides can emit laser lines. The light beams are parallel to the ground and are used to measure the distance between the road surface and the light beams, thereby determining whether there are potholes on the road surface. Four sliding strips 6 are slidably set inside the sliding grooves 4. The sliding strips 6 inside the rotating ring 5 are rotatably set inside the sliding grooves 4 on the outer wall of the guide tube 3. The constraint of the slide bar 6 ensures the stability of the rotating ring 5 during rotation. The ends of the four rotating shafts 12 furthest from the second rotating seat 11 are rotatably connected to the base plate 1. All four driving gears 13 mesh with driven gears 10, and all four worms 9 mesh with worm wheels 7. The operator rotates the rotary knob 14, which in turn drives the driving gears 13 via the rotating shafts 12. The rotation of the driving gears 13, through meshing with the driven gears 10, further drives the rotation of the driven gears 10. The driven gears 10 are fixedly mounted on one end of the worms 9. The rotation of the driven gears 10... The movement simultaneously drives the worm 9 to rotate. The rotation of the worm 9, through meshing with the worm wheel 7, further drives the rotation of the worm wheel 7. The worm wheel 7 is fixedly mounted on the outer wall of the rotating ring 5. As the worm wheel 7 rotates, it drives the rotation of the rotating ring 5. The rotation of the rotating ring 5, through its internal threads, drives the rotation of the first lead screw 15, thereby completing the adjustment of the support leg. All four first lead screws 15 are slidably mounted inside the guide tube 3. The guide tube 3 restricts the vertical stability of the first lead screws 15 during up-and-down movement, ensuring the accuracy of the adjustment.

[0028] Reference Figure 1 , Figure 5 and Figure 6Four guide blocks 22 are slidably disposed inside the guide groove 18. The four guide blocks 22 are slidably disposed inside the guide groove 18 to limit the left and right displacement of the clamping plate 21 during movement, so that the level gauge 2 can be kept in the center position at the top of the base plate 1 during installation. The level gauge 2 is fixedly disposed between the two clamping plates 21. The two clamping plates 21 are in contact with the two sides of the level gauge 2. When installing the level gauge 2, first place the level gauge 2 on the top of the base plate 1 and between the two clamping plates 21. Then, by rotating the handle 23, the two clamping plates 21 are moved in opposite directions through the threaded rod and come into contact with the two sides of the level gauge 2, thereby clamping the level gauge 2 between the two clamping plates 21.

[0029] The implementation principle of this application embodiment is as follows: First, place the level gauge 2 between the two clamping plates 21 on the base plate 1. Rotate the handle 23, and the screw drive between the second lead screw 20 and the third fixed seat 19 will cause the clamping plates 21 to slide along the guide groove 18. The guide block 22 will limit the offset of the clamping plates 21, thus clamping the level gauge 2 and fixing it. Next, place the instrument on the road surface to be measured. The operator will turn the knob 14, which will drive the drive gear 13 to rotate through the rotating shaft 12. Through the meshing transmission between the drive gear 13 and the driven gear 10, the worm gear 9 will rotate, and the worm gear 9 will drive the worm wheel 7 to rotate, thereby causing the rotating ring 5 to rotate. The internal thread of the rotating ring 5 engages with the first lead screw 15. Under the constraint of the guide tube 3, it drives the first lead screw 15 to rise and fall vertically. The rotational connection between the ball head 16 and the grounding block 17 ensures that the grounding block 17 is in contact with the ground, realizing the horizontal adjustment and stable support of the instrument. During measurement, the first horizontal tube 202, the second horizontal tube 204 and the third horizontal tube 206 in the level gauge 2 measure the inclination of the base plate 1 in the front and back, the angle of the inclined road surface and the left and right directions, respectively, to check whether it is in a horizontal state. The laser emitters 207 on both sides emit laser lines, and the distance between the light and the road surface is measured to determine whether there are potholes on the road surface.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A road surface smoothness measuring instrument, comprising a base plate (1) and a levelness meter (2), characterized in that: The base plate (1) is fixedly connected to four guide tubes (3) arranged in a rectangular array. Each of the four guide tubes (3) has a groove (4) at the bottom of its outer wall. Each of the four guide tubes (3) has a rotating ring (5) rotatably arranged at the bottom of its outer wall. Each of the four rotating rings (5) has a slide bar (6) fixedly connected to its inner wall. Each of the four rotating rings (5) has a worm gear (7) fixedly connected to its outer wall. Each of the base plate (1) has a plurality of first rotating seats (8) arranged in a rectangular array fixedly connected to its bottom end. Each of the plurality of first rotating seats (8) has a worm gear (9) rotatably arranged between each pair of first rotating seats (8). Each of the plurality of worm gears (9) has a driven gear (10) fixedly connected to one end. The base plate (1) has four second rotating seats (11) fixedly connected to its outer wall. Each of the four second rotating seats (11) has a rotating shaft (12) rotatably connected inside. Each of the four rotating shafts (12) has a driving gear (13) fixedly connected to one end of its outer wall. Each of the four rotating shafts (12) has a rotating knob (14) fixedly connected to the end away from the driving gear (13). Each of the four rotating rings (5) has a first lead screw (15) threaded inside. Each of the four first lead screws (15) has a ball head (16) fixedly connected to its bottom end. Each of the four ball heads (16) has a grounding block (17) rotatably connected to its bottom end. The level gauge (2) is located on the upper end of the base plate (1).

2. A road surface evenness measuring instrument according to claim 1, characterized in that: The base plate (1) has four guide grooves (18) arranged in a rectangular array at its upper end. The base plate (1) has three fixed seats (19) fixedly connected to both sides of its upper end. The two third fixed seats (19) are threaded with second lead screws (20). The two second lead screws (20) are rotatably connected to one end of each of the two second lead screws (21). The two clamps (21) are fixedly connected to the bottom of each of the two clamps (21) with two guide blocks (22) arranged in a mirror distribution. The two second lead screws (20) are fixedly connected to a throttle (23) at the end away from the clamps (21).

3. The instrument for measuring the flatness of a road surface according to claim 1, characterized in that: The level gauge (2) includes a housing (201), a first level tube (202) is fixedly connected to the upper end of the housing (201), through holes (203) are provided on both sides of the housing (201), a second level tube (204) is fixedly connected to the two through holes (203), two mounting slots (205) are provided on the upper end of the housing (201) in a mirror arrangement, a third level tube (206) is fixedly connected to the two mounting slots (205), and a laser emitter (207) is fixedly connected to both sides of the housing (201).

4. The road surface smoothness measuring instrument according to claim 1, characterized in that: All four sliders (6) are slidably disposed inside the slide groove (4).

5. The instrument for measuring the flatness of a road surface according to claim 1, characterized in that: The ends of the four rotating shafts (12) away from the second rotating seat (11) are rotatably connected to the base plate (1), the four driving gears (13) are all meshed with the driven gears (10), and the four worms (9) are all meshed with the worm wheel (7).

6. The instrument for measuring the flatness of a road surface according to claim 1, characterized in that: All four first lead screws (15) are slidably disposed inside the guide tube (3).

7. A road surface smoothness measuring instrument according to claim 2, characterized in that: All four guide blocks (22) are slidably disposed inside the guide groove (18).

8. The road surface smoothness measuring instrument according to claim 1, characterized in that: The level gauge (2) is fixedly installed between two clamps (21), and the two clamps (21) are in contact with the two sides of the level gauge (2).

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