Height-adjustable roadbed and pavement flatness detection device

Abstract

The utility model discloses a height-adjustable roadbed pavement flatness detection device, which comprises a mounting rod, the mounting rod is transversely arranged, a plurality of guide rods are mounted at the front end of the mounting rod, the guide rods are longitudinally arranged, driving screw rods are arranged on the inner sides of the guide rods, the driving screw rods are connected with sliding blocks, and the sliding blocks are connected with the mounting rod. The driving screw can drive the sliding block to move up and down along the guide rod, a laser flatness instrument is installed at the front end of the sliding block, and the laser flatness instrument is detachably connected with the sliding block. According to the laser flatness instrument, the guide rod is arranged on the mounting rod, the adjusting screw rod is mounted in the guide rod, and the height of the sliding block can be adjusted through the adjusting screw rod, so that the height of the laser flatness instrument on the sliding block can be conveniently adjusted, and the use flexibility of the laser flatness instrument is improved; and a worker can conveniently adjust the height of the laser flatness instrument according to detection requirements. Meanwhile, the flatness detection device with the structure can be fixed on a front beam or a rear beam of a vehicle.

Description

Technical Field

[0001] This utility model relates to the field of flatness detection technology, specifically to a roadbed and pavement flatness detection device with adjustable height. Background Technology

[0002] Accurate detection of roadbed and pavement smoothness is crucial during road construction and maintenance. Traditional methods for detecting roadbed smoothness include the 3-meter straightedge method, the continuous smoothness meter method, and the laser smoothness meter method, each with its own advantages and disadvantages.

[0003] In the prior art, Chinese patent publication number CN215857085U discloses a roadbed pavement smoothness testing device, including a base plate. Two L-shaped mounting plates are symmetrically fixedly connected to the upper end of the base plate. A U-shaped bracket is fixedly connected to the center of the lower end of the base plate. The same rotating block is rotatably connected to the inner wall of opposite sides of the U-shaped bracket via a pin. A U-shaped fixing plate is fixedly connected to the lower end of the rotating block. Two electric push rods are symmetrically rotatably connected to the lower end of the base plate and the upper end of the U-shaped fixing plate. The same reciprocating screw is rotatably connected to the inner wall of opposite sides of the U-shaped fixing plate via a ball bearing. A rotary motor is fixedly installed on the outer side of the U-shaped fixing plate. The output shaft of the rotary motor passes through the side wall of the U-shaped fixing plate and is fixedly connected to one end of the reciprocating screw. A driving block is threaded onto the rod wall of the reciprocating screw. A laser rangefinder is fixedly connected to the lower end of the driving block.

[0004] The roadbed and pavement smoothness testing device provided in the aforementioned patent is a device that uses a laser smoothness meter to detect the smoothness of the roadbed and pavement. However, the existing smoothness testing device is not convenient to adjust its height according to usage requirements, resulting in insufficient flexibility in its use and making it inconvenient to adjust the height of the laser smoothness meter according to usage needs. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable height roadbed and pavement smoothness testing device, which aims to improve the problem that existing smoothness testing devices are inconvenient to adjust the height according to usage requirements, and that the height of laser smoothness meters is inconvenient to adjust according to usage requirements.

[0006] This utility model is implemented as follows:

[0007] An adjustable-height roadbed pavement smoothness testing device includes a mounting rod arranged laterally. Multiple guide rods are mounted on the front end of the mounting rod, arranged longitudinally, and a drive screw is provided on the inner side of each guide rod. A slider is connected to the drive screw, which can drive the slider to move up and down along the guide rods. A laser smoothness meter is mounted on the front end of the slider, and the laser smoothness meter is detachably connected to the slider.

[0008] Preferably, the mounting rod has symmetrical fixing feet on both sides of its rear end, a fixing plate at the rear end of each fixing foot, and fixing holes at the corners of the fixing plate.

[0009] Preferably, the guide rod has a guide opening at its front end, the guide opening is arranged longitudinally, and bearings are provided at both the top and bottom ends of the guide opening.

[0010] Preferably, both ends of the drive screw are provided with connecting shafts, the connecting shafts are interference-fitted with bearings, and the top end of the drive screw extends out with a guide rod. One end of the drive screw extending out with the guide rod is provided with a rotating handle, and the rotating handle is provided with a rocker arm.

[0011] Preferably, the slider has a threaded hole in the middle and a support plate at the front end of the slider. The support plate is L-shaped and has multiple through holes.

[0012] Preferably, the laser flatness gauge has a laser emitting end at the front end of its bottom surface, and a connecting groove is provided at the rear end of the bottom surface of the laser flatness gauge aligned with the position of the through hole. The laser flatness gauge is connected to the support plate by bolts. The top end of the laser flatness gauge has a connecting wire, and the end of the connecting wire has a connecting plug.

[0013] Preferably, the mounting rod has a slide rail at its front end, the guide rod has a connecting rod at its rear end, and the connecting rod has a sliding joint at its rear end. The sliding joint is engaged in the slide rail, allowing the guide rod to be adjusted laterally along the slide rail.

[0014] Preferably, a positioning plate is provided at the top of the rear end of the connecting rod. The positioning plate is engaged with the upper surface of the mounting rod and is disposed in close contact with the upper surface of the mounting rod. A set screw is provided in the middle of the positioning plate and the set screw abuts against the mounting rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model features a guide rod on the mounting rod, with an adjusting screw installed inside. The height of the slider can be adjusted by the adjusting screw, facilitating height adjustment of the laser flatness gauge on the slider. This improves the flexibility of the laser flatness gauge and allows operators to easily adjust its height according to testing needs. Furthermore, this flatness testing device can be fixed to the front or rear beam of a vehicle, offering stable operation and ease of use.

[0017] 2. This utility model provides a slide rail on the mounting rod, on which multiple guide rods can be installed, thereby facilitating the installation of multiple laser flatness gauges and allowing for the selective installation of multiple laser flatness gauges according to usage requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the mounting rod of this utility model;

[0020] Figure 3 This is a schematic diagram of the guide rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the drive screw of this utility model;

[0022] Figure 5 This is a schematic diagram of the slider of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the laser flatness meter of this utility model.

[0024] In the diagram: 1. Mounting rod; 11. Slide rail; 12. Fixing foot; 13. Fixing plate; 14. Fixing hole; 2. Guide rod; 21. Guide opening; 22. Bearing; 23. Connecting rod; 24. Sliding joint; 25. Positioning plate; 26. Set screw; 3. Drive screw; 31. Connecting shaft; 32. Rotating handle; 33. Crank handle; 4. Slider; 41. Support plate; 42. Through hole; 43. Threaded hole; 5. Laser flatness gauge; 51. Laser emitting end; 52. Connecting groove; 53. Connecting wire; 54. Connecting plug. Detailed Implementation

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0027] Example 1

[0028] like Figure 1As shown, an adjustable-height roadbed and pavement smoothness testing device includes a mounting rod 1. The mounting rod 1 is horizontally arranged, facilitating installation at the front or rear of a vehicle, thus providing a convenient mounting position for a laser smoothness meter 5 on the vehicle. Multiple guide rods 2 are mounted at the front end of the mounting rod 1, arranged longitudinally, and a drive screw 3 is provided on the inner side of each guide rod 2. The drive screw 3 is connected to a slider 4, which can move the slider 4 up and down along the guide rod 2. This allows for flexible use of the slider 4 by moving the slider 4 according to usage requirements. A laser smoothness meter 5 is mounted at the front end of the slider 4, and the laser smoothness meter 5 is detachably connected to the slider 4. The laser smoothness meter 5 emits a laser beam onto the roadbed to detect its smoothness.

[0029] like Figure 2 As shown, mounting rod 1 has symmetrical fixing feet 12 on both sides of its rear end, and a fixing plate 13 at the rear end of the fixing feet 12. The fixing plate 13 has fixing holes 14 at its corners. This structure facilitates fixing the mounting rod 1 to the front or rear beam of the car with bolts, ensuring the stable use of the mounting rod 1.

[0030] like Figure 3 As shown, the guide rod 2 has a guide opening 21 at its front end, which is arranged longitudinally. This structure facilitates the guide rod 2 to stably guide the slider 4, making it easy for the slider 4 to move up and down and to be used. Furthermore, bearings 22 are provided at both the top and bottom of the guide opening 21, allowing for easy connection with the drive screw 3 and facilitating a rotatable connection between the drive screw 3 and the bearings 22.

[0031] like Figure 4 As shown, the drive screw 3 has connecting shafts 31 at both ends, which are interference-fitted with bearings 22. A guide rod 2 extends from the top of the drive screw 3, and a rotating handle 32 is located at one end of the drive screw 3 extending from the guide rod 2. A rocker arm 33 is mounted on the rotating handle 32. The efficient rotation of the drive screw 3 through the cooperation of the rotating handle 32 and the rocker arm 33 facilitates its flexible rotation and use.

[0032] like Figure 5 As shown, the slider 4 has a threaded hole 43 in the middle, which facilitates the threaded connection between the slider 4 and the drive screw 3. The front end of the slider 4 has a support plate 41, which is L-shaped and facilitates connection to the laser flatness meter 5, making the use of the laser flatness meter 5 easier. The support plate 41 also has multiple through holes 42, which allow bolts to pass through the support plate 41, facilitating the fixing of the laser flatness meter 5 with bolts.

[0033] like Figure 6As shown, the laser leveling instrument 5 has a laser emitting end 51 at the front of its bottom surface. This structure facilitates the laser leveling instrument 5 to emit laser light, thereby facilitating the measurement of its distance from the roadbed surface. Furthermore, a connecting groove 52 is provided at the rear of the bottom surface of the laser leveling instrument 5, aligned with the through hole 42. The connecting groove 52 facilitates the fixing of the laser leveling instrument 5 with bolts. The laser leveling instrument 5 is connected to the support plate 41 by bolts. A connecting wire 53 is provided at the top of the laser leveling instrument 5, and a connecting plug 54 is provided at the end of the connecting wire 53. The connecting wire 53 and the connecting plug 54 facilitate the connection of the laser leveling instrument 5 to power.

[0034] Example 2

[0035] like Figure 1 As shown, an adjustable-height roadbed and pavement smoothness testing device includes a mounting rod 1. The mounting rod 1 is horizontally arranged, facilitating installation at the front or rear of a vehicle, thus providing a convenient mounting position for a laser smoothness meter 5 on the vehicle. Multiple guide rods 2 are mounted at the front end of the mounting rod 1, arranged longitudinally, and a drive screw 3 is provided on the inner side of each guide rod 2. The drive screw 3 is connected to a slider 4, which can move the slider 4 up and down along the guide rod 2. This allows for flexible use of the slider 4 by moving the slider 4 according to usage requirements. A laser smoothness meter 5 is mounted at the front end of the slider 4, and the laser smoothness meter 5 is detachably connected to the slider 4. The laser smoothness meter 5 emits a laser beam onto the roadbed to detect its smoothness.

[0036] like Figure 2 As shown, mounting rod 1 has symmetrical fixing feet 12 on both sides of its rear end, and a fixing plate 13 at the rear end of the fixing feet 12. The fixing plate 13 has fixing holes 14 at its corners. This structure facilitates fixing the mounting rod 1 to the front or rear beam of the car with bolts, ensuring the stable use of the mounting rod 1.

[0037] like Figure 3 As shown, the guide rod 2 has a guide opening 21 at its front end, which is arranged longitudinally. This structure facilitates the guide rod 2 to stably guide the slider 4, making it easy for the slider 4 to move up and down and to be used. Furthermore, bearings 22 are provided at both the top and bottom of the guide opening 21, allowing for easy connection with the drive screw 3 and facilitating a rotatable connection between the drive screw 3 and the bearings 22.

[0038] like Figure 4 As shown, both ends of the drive screw 3 are provided with connecting shafts 31, which are interference-fitted with bearings 22. The top of the drive screw 3 extends out of the guide rod 2, and one end of the drive screw 3 extending out of the guide rod 2 is provided with a rotating handle 32, which is provided with a rocker arm 33. The drive screw 3 can be rotated efficiently by the cooperation of the rotating handle 32 and the rocker arm 33, thus facilitating the flexible rotation and use of the drive screw 3.

[0039] like Figure 5 As shown, the slider 4 has a threaded hole 43 in the middle, which facilitates the threaded connection between the slider 4 and the drive screw 3. The front end of the slider 4 has a support plate 41, which is L-shaped and facilitates connection to the laser flatness meter 5, making the use of the laser flatness meter 5 easier. The support plate 41 also has multiple through holes 42, which allow bolts to pass through the support plate 41, facilitating the fixing of the laser flatness meter 5 with bolts.

[0040] like Figure 6 As shown, the laser leveling instrument 5 has a laser emitting end 51 at the front of its bottom surface. This structure facilitates the laser leveling instrument 5 to emit laser light, thereby facilitating the measurement of its distance from the roadbed surface. Furthermore, a connecting groove 52 is provided at the rear of the bottom surface of the laser leveling instrument 5, aligned with the through hole 42. The connecting groove 52 facilitates the fixing of the laser leveling instrument 5 with bolts. The laser leveling instrument 5 is connected to the support plate 41 by bolts. A connecting wire 53 is provided at the top of the laser leveling instrument 5, and a connecting plug 54 is provided at the end of the connecting wire 53. The connecting wire 53 and the connecting plug 54 facilitate the connection of the laser leveling instrument 5 to power.

[0041] like Figure 2 and Figure 3 As shown, the front end of the mounting rod 1 has a slide rail 11, and the rear end of the guide rod 2 has a connecting rod 23. The rear end of the connecting rod 23 has a sliding joint 24, which engages with the slide rail 11, allowing the guide rod 2 to be adjusted laterally along the slide rail 11. This structure facilitates the sliding connection between the guide rod 2 and the mounting rod 1, allowing the guide rod 2 to move left and right along the mounting rod 1, thus facilitating its flexible use. The top of the rear end of the connecting rod 23 has a positioning plate 25, which engages with the upper surface of the mounting rod 1. The positioning plate 25 is fitted against the upper surface of the mounting rod 1, and a set screw 26 is located in the middle of the positioning plate 25, abutting against the mounting rod 1. This mechanism facilitates fixing the position of the guide rod 2 using the set screw 26, enabling flexible installation and use of the guide rod 2.

[0042] Working Principle: In use, the mounting rod 1 is installed on the front or rear beam of the vehicle. Then, multiple guide rods 2 are selectively installed according to the testing requirements, and their positions are adjusted. The set screw 26 is then tightened to secure the guide rods 2. Next, the laser flatness meter 5 is fixed to the support plate 41, ensuring a stable connection between the laser flatness meter 5 and the support plate 41. The laser flatness meter 5 is then powered on. It emits a laser beam towards the roadbed surface and receives the reflected light, calculating the distance from the instrument to the roadbed surface based on the round-trip time of the laser beam. As the vehicle moves, the distance data is continuously measured, and the flatness information of the roadbed is obtained through analysis of this data.

[0043] In summary, by providing a guide rod 2 on the mounting rod 1, and installing an adjusting screw inside the guide rod 2, the height of the slider 4 can be adjusted by adjusting the screw. This facilitates the height adjustment of the laser flatness gauge 5 on the slider 4, improving the flexibility of the laser flatness gauge 5 and allowing operators to easily adjust its height according to testing needs. Furthermore, this flatness testing device can be fixed to the front or rear beam of a vehicle, offering stable operation and ease of use.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A height-adjustable roadbed and pavement smoothness testing device, comprising a mounting rod (1), characterized in that, The mounting rod (1) is arranged horizontally, and a plurality of guide rods (2) are installed at the front end of the mounting rod (1). The guide rods (2) are arranged vertically, and a drive screw (3) is provided on the inner side of the guide rod (2). The drive screw (3) is connected to a slider (4). The drive screw (3) can drive the slider (4) to move up and down along the guide rod (2). A laser flatness gauge (5) is installed at the front end of the slider (4). The laser flatness gauge (5) and the slider (4) are detachably connected.

2. The adjustable-height roadbed and pavement smoothness testing device according to claim 1, characterized in that, The mounting rod (1) has symmetrical fixing feet (12) on both sides of its rear end. The fixing feet (12) have a fixing plate (13) at their rear ends. The fixing plate (13) has fixing holes (14) at its corners.

3. The adjustable-height roadbed and pavement smoothness testing device according to claim 1, characterized in that, The guide rod (2) has a guide opening (21) at its front end. The guide opening (21) is arranged longitudinally, and bearings (22) are provided at both the top and bottom of the guide opening (21).

4. The adjustable-height roadbed and pavement smoothness testing device according to claim 3, characterized in that, Both ends of the drive screw (3) are provided with connecting shafts (31), the connecting shafts (31) are interference-fitted with the bearings (22), and the top of the drive screw (3) extends out of the guide rod (2). One end of the drive screw (3) extending out of the guide rod (2) is provided with a rotating handle (32), and the rotating handle (32) is provided with a rocker arm (33).

5. The adjustable-height roadbed and pavement smoothness testing device according to claim 1, characterized in that, The slider (4) has a threaded hole (43) in the middle and a support plate (41) at the front end. The support plate (41) is L-shaped and has multiple through holes (42).

6. The adjustable-height roadbed and pavement smoothness testing device according to claim 5, characterized in that, The laser flatness meter (5) has a laser emitting end (51) at the front end of its bottom surface, and a connecting groove (52) is provided at the rear end of the bottom surface of the laser flatness meter (5) aligned with the position of the through hole (42). The laser flatness meter (5) is connected to the support plate (41) by bolts. The top end of the laser flatness meter (5) is provided with a connecting wire (53), and the end of the connecting wire (53) is provided with a connecting plug (54).

7. A height-adjustable roadbed and pavement smoothness testing device according to any one of claims 1-6, characterized in that, The mounting rod (1) has a slide rail (11) at its front end, and the guide rod (2) has a connecting rod (23) at its rear end. The connecting rod (23) has a sliding joint (24) at its rear end. The sliding joint (24) is inserted into the slide rail (11), so that the guide rod (2) can be adjusted laterally along the slide rail (11).

8. The adjustable-height roadbed and pavement smoothness testing device according to claim 7, characterized in that, The rear end of the connecting rod (23) is provided with a positioning plate (25), which is engaged with the upper surface of the mounting rod (1). The positioning plate (25) is set against the upper surface of the mounting rod (1), and a set screw (26) is provided in the middle of the positioning plate (25). The set screw (26) abuts against the mounting rod (1).

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