A portable road evenness measuring device

Abstract

This application relates to a portable road smoothness measuring device, belonging to the technical field of highway inspection equipment. It includes a housing, with a top plate formed by two plates joined together. Rollers are provided at the bottom of the housing. A handle is rotatably connected to the housing. A detector body is slidably connected inside the housing, sliding vertically. A bidirectional threaded rod is provided inside the housing to support the movement of the two top plates towards or away from each other. A worm gear is provided inside the housing to drive the detector body upwards and downwards. This application provides a road smoothness measuring device that can be quickly opened and closed.

Description

Technical Field

[0001] This application relates to the technical field of highway inspection equipment, and in particular to a portable road smoothness measuring device. Background Technology

[0002] Currently, road surface roughness refers to the deviation of the longitudinal unevenness of the road surface. Road surface roughness is an important indicator in road evaluation and construction acceptance, primarily reflecting the smoothness of the road's longitudinal profile curve. A relatively smooth longitudinal profile curve indicates a relatively smooth road surface, or relatively good roughness; conversely, a rough surface indicates relatively poor roughness. Good road surfaces require good roughness.

[0003] Currently, this indicator is typically measured using a three-meter straightedge equipped with a level. The method involves placing the three-meter straightedge flat on the road surface, then using another straightedge to measure the gap between the bottom of the three-meter straightedge and the road surface. Since there can be multiple such gaps, the measurer needs to measure them sequentially and compare them, taking the maximum value as the flatness. The disadvantages of this method are that it requires numerous measurements, is time-consuming and labor-intensive, and has a significant human error, affecting the accuracy of the measurement.

[0004] To improve efficiency, existing measuring devices use trolleys with drive wheels. However, these devices are cumbersome to collect data, hindering the rapid measurement process and the ability to quickly move to the next measurement point, thus increasing the workload of operators. Summary of the Invention

[0005] In order to enable the road surface smoothness testing device to be quickly opened and closed, this application provides a portable road smoothness measuring device.

[0006] The portable road smoothness measuring device provided in this application adopts the following technical solution:

[0007] A portable road smoothness measuring device includes a detector body and a housing. The housing includes a top plate, a bottom plate, and side plates. The bottom plate is horizontally positioned, and multiple side plates are provided, which are perpendicular to the bottom plate and fixedly connected to its sides. Two top plates are slidably connected to the side plates and are joined together. The sliding direction of the top plates is parallel to the travel direction of the housing and they are horizontally positioned. When inspecting the road, the two top plates move away from each other. A bidirectional threaded rod is rotatably connected to the housing, and the bidirectional threaded rod has symmetrical reverse threads along its middle position. The ends of the two top plates that are close to each other... Each component is fixed with a slider, and a threaded sleeve is magnetically connected to the slider. The threaded sleeve is threaded onto a bidirectional threaded rod and connected to it. A horizontal groove is fixed on the side plate, and the threaded sleeve slides inside the groove. The detector body is located inside the housing and is slidably connected to the housing. The sliding direction is along the direction of approaching or moving away from the ground. A worm gear is provided inside the housing to drive the detector body to slide upward when the top plate moves away from the ground. A conveyor chain is vertically arranged on the side plate, and the top plate slides vertically under the transmission action of the conveyor chain. A transmission component is fixed on the housing to drive the top plate to move away from the ground.

[0008] By adopting the above technical solution, the housing is placed on the road to be inspected. Rotating the bidirectional threaded rod causes the threaded sleeve to rotate relative to the threaded rod. The threaded sleeve drives the slider to move, and the slider drives the top plate to move away from each other, thus opening the top plate. Simultaneously, the worm gear inside the housing lifts the detector body upwards, allowing the detector body to begin inspecting the road. When the top plate's slider moves to the side plate, the slider and threaded sleeve are magnetically released. The top plate then moves vertically downwards under the transmission of the conveyor chain until it is parallel to and fits against the side plate. After the detector body completes its inspection of the road, the transmission assembly drives the top plate to slide vertically upwards until the slider and threaded sleeve are magnetically attracted. The bidirectional threaded rod is then rotated in the opposite direction, moving the detector body back into the housing, and the top plate returns to its original position. This achieves the rapid deployment and storage of the road inspection device.

[0009] Optionally, a slide rail is vertically arranged on the side plate, the conveyor chain is located inside the slide rail, and a tray is fixed on the conveyor chain.

[0010] By adopting the above technical solution, when the detector body needs to detect, the two top plates slide in a direction away from each other until the slider slides onto the support plate. The support plate moves vertically under the transmission action of the conveyor chain. At this time, the top plate and the slider slide inside the slide rail, which increases the stability of the top plate sliding and reduces the shaking of the top plate during sliding.

[0011] Optionally, a baffle is horizontally fixed on the side plate.

[0012] By adopting the above technical solution, when the top plate slides vertically inside the slide rail, it is prevented from falling under its own weight, and the baffle can limit the sliding range of the top plate.

[0013] Optionally, a first gear is fixed at one end of the bidirectional threaded rod, and a rotating shaft is rotatably connected to the end of the side plate away from the top plate. A second gear is fixed on the rotating shaft, and the first gear and the second gear are connected in a transmission relationship. A handwheel is fixed on the rotating shaft.

[0014] By adopting the above technical solution, rotating the handwheel on the rotating shaft drives the second gear to rotate. The second gear is connected to the first gear, so the rotation of the bidirectional threaded rod can be controlled. That is, rotating the handwheel can adjust the opening of the top plate. After the top plate is opened, it will continue to move vertically along the side plate. Directly rotating the bidirectional threaded rod will affect the movement trajectory of the top plate. Rotating the handwheel can ensure that the movement of the top plate is not affected.

[0015] Optionally, the worm gear includes a one-way threaded rod, a rotating rod, a third gear, and a housing. A lifting plate is fixed to the bottom of the detector body, and the lifting plate abuts against the side plate of the housing. The one-way threaded rod is vertically arranged and passes through the lifting plate. The one-way threaded rod is rotatably connected to the bottom of the housing. The third gear is located inside the housing and is ringed on the one-way threaded rod, rotating with the one-way threaded rod. The rotating rod passes through the housing and meshes with the third gear. The rotating rod is drively connected to the rotating shaft.

[0016] By using the above technical solution, turning the handwheel causes the rotating rod to rotate because the rotating shaft and the rotating rod are connected by a transmission. The rotating rod rotates and meshes with the third gear. The third gear is connected to the one-way threaded rod by a thread, which drives the one-way threaded rod to rotate. The one-way threaded rod passes through the lifting plate. Under the unidirectional rotation of the one-way threaded rod, the lifting plate moves in the vertical direction. This means that turning the handwheel opens the top plate to both sides while the detector body is lifted upward.

[0017] Optionally, the bottom of the detector body is provided with multiple springs, which are distributed at intervals along the bottom area of ​​the detector body. One end of each spring is fixed to the detector body, and the other end is fixed to the lifting plate.

[0018] By adopting the above technical solution, the spring plays a role in shock absorption when the housing moves, which can effectively reduce the bumps of the detector body.

[0019] Optionally, the transmission assembly includes a first reversing wheel, a second reversing wheel, a third reversing wheel, and a fourth reversing wheel. The first reversing wheel is fixed coaxially with the rotating rod and meshes with the second reversing wheel for rotation. The second reversing wheel is fixedly connected to the third reversing wheel. A main drive wheel is connected to the transmission chain. The main drive wheel is fixed coaxially with the fourth reversing wheel, and the third reversing wheel and the fourth reversing wheel mesh for transmission.

[0020] By adopting the above technical solution, rotating the handwheel causes the rotating shaft to rotate, and the first reversing wheel on the rotating shaft meshes with the second reversing wheel to rotate. The second reversing wheel drives the third reversing wheel to rotate, and the third reversing wheel meshes with the fourth reversing wheel to rotate. The fourth reversing wheel drives the main drive wheel to rotate, thereby realizing the rotation of the conveyor chain. The rotation of the conveyor chain realizes the vertical movement of the top plate.

[0021] Optionally, a handle is rotatably connected to the housing, and the rotation axis of the handle is perpendicular to the travel direction of the housing and is horizontally arranged.

[0022] By adopting the above technical solution, the shell can be pushed and pulled by holding the handle, which facilitates the movement of the shell. Moreover, the handle can be reversed, which can realize bidirectional movement of the shell.

[0023] Optionally, a limiting rod is hinged to one end of the handle near the housing, and a limiting groove is provided on the side plate of the housing. When the housing is lifted, the limiting rod is limited in the limiting groove.

[0024] By adopting the above technical solution, when encountering roads with significant elevation differences or when it is necessary to retract the detection device, the housing needs to be lifted upwards to limit the limiting rod in the limiting groove, which can effectively prevent the housing from shaking and prevent damage to the internal structure of the housing.

[0025] Optionally, the two top plates are provided with a plug and a slot on their respective sides that are close to each other, and the plug and slot are inserted and connected.

[0026] By adopting the above technical solution, when the detector body is not used to detect the road, the two top plates are spliced ​​and inserted together, which can effectively protect the detector body from dust and prevent the two top plates from falling apart due to collisions during transportation.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Turning the handwheel causes the shaft to drive the first gear and the rotating rod to rotate. The rotation of the first gear drives the double-threaded rod to rotate, which allows the top plate to unfold to both sides while the detector body is lifted upward.

[0029] 2. Turn the handwheel, the shaft is connected to the transmission assembly, and the conveyor chain will move the top plate away from the bottom plate until the slider and the threaded sleeve are magnetically connected. The top plates will move towards each other, thus realizing the rapid retraction of the top plate and closing of the shell. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0031] Figure 2 This is a top view of an embodiment of the present application;

[0032] Figure 3 yes Figure 2 A magnified view of part D in the middle;

[0033] Figure 4 This is a cross-sectional structural diagram of an embodiment of this application;

[0034] Figure 5 yes Figure 1 A magnified view of part A in the middle;

[0035] Figure 6 yes Figure 1 A magnified view of part B in the middle section;

[0036] Figure 7 yes Figure 1 A magnified view of part C in the middle.

[0037] In the diagram, 1. Housing; 11. Base plate; 12. Side plate; 121. Slide rail; 122. Slide groove; 123. Sector groove; 1231. Limiting groove; 13. Top plate; 131. Slider; 132. Insert block; 133. Slot; 2. Detector body; 21. Spring; 3. Bidirectional threaded rod; 31. Threaded sleeve; 311. Thread; 32. First gear; 4. Transmission assembly; 41. First reversing wheel; 42. Second reversing wheel; 43. Third reversing wheel; 44. Fourth reversing wheel; 45. Support rod; 46. Connecting rod; 4 7. Conveyor chain; 471. Pallet; 472. Main drive wheel; 473. Driven wheel; 48. Support; 5. Baffle; 6. Shaft; 61. Second gear; 62. Fourth gear; 63. First conveyor belt; 64. Second conveyor belt; 65. Handwheel; 7. Worm gear; 71. One-way threaded rod; 72. Rotating rod; 721. Turbine; 722. Fifth gear; 73. Third gear; 74. Housing; 75. Lifting plate; 751. Guide rod; 8. Hand handle; 81. Rotating rod; 82. Limiting rod; 9. Roller. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0039] This application discloses a portable road smoothness measuring device.

[0040] refer to Figure 1A portable road smoothness measuring device includes a housing 1, which is generally square. The housing 1 includes a top plate 13, a bottom plate 11, and side plates 12. The bottom plate 11 is horizontally arranged, and there are four side plates 12. The four side plates 12 are perpendicular to the bottom plate 11 and fixedly connected to the side of the bottom plate 11. The top plate 13 is slidably connected to the side plates 12. There are two top plates 13, which are spliced ​​together. A handle 8 is rotatably connected to the housing 1, and four rollers 9 are rotatably connected to the bottom of the housing 1. The rotation axis of the rollers 9 is perpendicular to the travel direction of the housing 1 and is horizontally arranged.

[0041] refer to Figure 2 and Figure 3 A fan-shaped groove 123 is provided on the side plate 12 of the housing 1 near the bottom plate 11. A rotating rod 81 is fixed to one end of the handle 8 near the fan-shaped groove 123. The handle 8 rotates along the arc length of the fan shape. A limiting rod 82 is hinged on the handle 8. Three limiting grooves 1231 are provided on the fan-shaped groove 123 along the arc length direction. When the handle 8 is pulled up and pushed, the limiting rod 82 is limited in the limiting groove 1231, which can effectively prevent the housing 1 from shaking.

[0042] refer to Figure 2 and Figure 3 Two bidirectional threaded rods 3 are rotatably connected to the housing 1. The two bidirectional threaded rods are symmetrically arranged along the housing 1. The bidirectional threaded rods 3 are symmetrically provided with reverse threads 311 at the middle position. The two top plates 13 are respectively fixed with sliders 131 at their close ends. The sliders 131 are cylindrical. The sliders 131 are magnetically connected with threaded sleeves 31. The threaded sleeves 31 are wrapped around the bidirectional threaded rods 3 and threadedly connected to the bidirectional threaded rods 3. The side plate 12 is horizontally fixed with a straight slide groove 122. The threaded sleeves 31 slide inside the slide groove 122.

[0043] refer to Figure 1 , Figure 4 and Figure 5 One end of the bidirectional threaded rod 3 is fixed with a first gear 32. The side plate 12 is rotatably connected to a rotating shaft 6 near the bottom plate 11. The rotation axis of the rotating shaft 6 is parallel to the travel direction of the housing 1 and is set horizontally. A second gear 61 is fixed on the rotating shaft 6. A first conveyor belt 63 is connected to the first gear 32 and the second gear 61. The first gear 32 and the second gear 61 form a triangular transmission. A handwheel 65 is fixed on the rotating shaft 6. When the handwheel 65 is turned, the rotating shaft 6 rotates, which drives the second gear 61 to rotate. The second gear 61 is in transmission with the first gear 32. The rotation of the first gear 32 drives the bidirectional threaded rod 3 to rotate, thereby realizing the movement of the top plate 13 in opposite directions.

[0044] refer to Figure 4On the side of the two top plates 13 that are close to each other, there are rectangular inserts 132 and slots 133 respectively. The inserts 132 and slots 133 are inserted and connected. The inserts 132 and slots 133 are both set along the side length of the top plates 13. The side of the top plates 13 that are far apart from each other is provided with an arc shape.

[0045] refer to Figure 1 , Figure 4 and Figure 6 The detector body 2 is located inside the housing 1. A lifting plate 75 is horizontally fixed at the bottom of the detector body 2, and the lifting plate 75 abuts against the side plate 12 of the housing 1. Multiple springs 21 are fixed between the detector body 2 and the lifting plate 75. The multiple springs 21 are distributed at intervals along the bottom area of ​​the detector body 2 to dampen the detector body 2. A worm gear 7 is provided inside the housing 1. The worm gear 7 includes a one-way threaded rod 71, a rotating rod 72, a third gear 73, and a housing 74. The one-way threaded rod 71 is vertically arranged and passes through the lifting plate 75. The one-way threaded rod 71 is rotatably connected to the bottom plate 11 of the housing 1. The third gear 73 is ringed on the one-way threaded rod 71 and rotates with the one-way threaded rod 71. A turbine 721 is provided on the rotating rod 72. Rod 72 passes through housing 74 and turbine 721 meshes with third gear 73. One end of rotating rod 72 passes through side plate 12. Fifth gear 722 is coaxially fixed on rotating rod 72. Fourth gear 62 is coaxially fixed on rotating shaft 6 with second gear 61. Second conveyor belt 64 is connected to fourth gear 62 and fifth gear 722. Rotating handwheel 65 drives rotating shaft 6 to drive second gear 61 and fourth gear 62 to rotate. Rotation of second gear 61 drives bidirectional threaded rod 3 to rotate. Rotation of fourth gear 62 drives rotating rod 72 to rotate. This allows top plate 13 to open to both sides while detector body 2 rises. Rotating handwheel 65 in the opposite direction moves detector body 2 downward while top plate 13 moves closer together until housing 1 is sealed.

[0046] refer to Figure 1 , Figure 4 and Figure 7Both sides of the side plate 12 are vertically provided with slide rails 121. A main drive wheel 472 and a driven drive wheel 473 are rotatably connected inside the slide rails 121. A transmission chain 47 is driven by the main drive wheel 472 and the driven drive wheel 473. A support plate 471 is fixed on the transmission chain 47. When the slider 131 slides onto the support plate 471, the transmission chain 47 rotates, and the top plate 13 moves vertically downwards under its own weight. A transmission assembly 4 is provided on the side plate 12. The transmission assembly 4 includes a first reversing wheel 41, a second reversing wheel 42, a third reversing wheel 43, and a fourth reversing wheel 44. These reversing wheels are all helical gears, mainly serving the functions of reversing direction and transmission. The first reversing wheel 41 is coaxially fixed with the rotating rod 72, and the first reversing wheel 41 meshes with the second reversing wheel 42. A support 48 is fixed on the side plate 12, and the second reversing wheel 42 and the third reversing wheel 43 are fixed together. A support rod 45 is connected, and the support rod 45 is rotatably connected to the support 48. A main drive wheel 472 is connected to the transmission chain 47. A connecting rod 46 is coaxially fixed between the main drive wheel 472 and the fourth reversing wheel 44. The third reversing wheel 43 and the fourth reversing wheel 44 mesh and drive each other. The rotating rod 72 rotates, and the transmission chain 47 is driven by the transmission component 4. A support plate 471 is fixed on the side plate 12. When the top plate 13 moves vertically to the appropriate position on the side plate 12, the baffle 5 restricts the top plate 13 from continuing to slide downward. The sliding of the top plate 13 inside the slide rail 121 can effectively prevent the top plate 13 from shaking during the movement of the housing 1. When the detection is completed, the rotating shaft 6 is rotated. The rotating shaft 6 drives the bidirectional threaded rod 3, the rotating rod 72 and the connecting rod 46 to rotate at the same time. That is, while the detector body 2 moves into the housing 1, the top plate 13 moves upward until it returns to its original position.

[0047] The implementation principle of a portable road smoothness measuring device in this application embodiment is as follows: Push the handle 8 to move the housing 1 to the position where road testing is required, turn the handwheel 65, the top plate 13 moves away from each other, and at the same time the detector body 2 rises. After the top plate 13 moves to the position of the side plate 12, it moves vertically downward against the side plate 12. After the test is completed, turn the handwheel 65 in the opposite direction, and the transmission chain 47 drives the top plate 13 to move vertically upward until the slider 131 is magnetically connected to the threaded sleeve 31. The detector body 2 moves into the housing 1, and the top plates 13 move closer to each other until the top plate 13 seals the housing 1.

[0048] 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. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable road smoothness measuring device, comprising a detector body (2), characterized in that: It also includes a housing (1), which includes a top plate (13), a bottom plate (11), and side plates (12). The bottom plate (11) is horizontally arranged, and there are multiple side plates (12). The multiple side plates (12) are vertically arranged with the bottom plate (11) and fixedly connected to the side of the bottom plate (11). The top plate (13) is slidably connected to the side plates (12). There are two top plates (13), which are spliced ​​together. The sliding direction of the top plate (13) is parallel to the travel direction of the housing (1) and is horizontally arranged. When inspecting the road, the two top plates (13) are far apart from each other. A bidirectional threaded rod (3) is rotatably connected to the housing (1). A reverse thread (311) is symmetrically opened along the middle position on the bidirectional threaded rod (3). A slider (131) is fixed to one end of each of the two top plates (13) that is close to each other. A threaded sleeve (31) is magnetically connected to the slider (131). The threaded sleeve (31) is looped around the double... A threaded rod (3) is threaded to a double-threaded rod (3). A horizontal groove (122) is fixed on the side plate (12). The threaded sleeve (31) slides inside the groove (122). The detector body (2) is located inside the housing (1) and is slidably connected to the housing (1). The sliding direction is along the direction close to or away from the ground. A worm gear (7) is provided inside the housing (1) to drive the detector body (2) to slide upward when the top plate (13) moves away from each other. A transmission chain (47) is vertically arranged on the side plate (12). The top plate (13) slides vertically under the transmission action of the transmission chain (47). A transmission component (4) is fixed on the housing (1) to drive the top plate (13) to move in the direction away from the ground. A slide rail (121) is vertically arranged on the side plate (12). The transmission chain (47) is located inside the slide rail (121). A support plate (471) is fixed on the transmission chain (47).

2. The portable road smoothness measuring device according to claim 1, characterized in that: A baffle (5) is horizontally fixed on the side plate (12).

3. The portable road smoothness measuring device according to claim 1, characterized in that: One end of the bidirectional threaded rod (3) is fixed with a first gear (32), and the end of the side plate (12) away from the top plate (13) is rotatably connected with a rotating shaft (6). A second gear (61) is fixed on the rotating shaft (6), and the first gear (32) and the second gear (61) are connected in a transmission. A handwheel (65) is fixed on the rotating shaft (6).

4. The portable road smoothness measuring device according to claim 3, characterized in that: The worm gear (7) includes a one-way threaded rod (71), a rotating rod (72), a third gear (73), and a housing (74). A lifting plate (75) is fixed at the bottom of the detector body (2). The lifting plate (75) abuts against the side plate (12) of the housing. The one-way threaded rod (71) is vertically arranged and passes through the lifting plate (75). The one-way threaded rod (71) is rotatably connected to the bottom of the housing (74). The third gear (73) is located inside the housing (74). The third gear (73) is ringed on the one-way threaded rod (71) and rotates with the one-way threaded rod (71) threadedly. The rotating rod (72) passes through the housing (74) and meshes with the third gear (73). The rotating rod (72) is connected to the rotating shaft (6) for transmission.

5. A portable road smoothness measuring device according to claim 4, characterized in that: The bottom of the detector body (2) is provided with multiple springs (21). The multiple springs (21) are distributed at intervals along the bottom area of ​​the detector body (2). One end of the spring (21) is fixed to the detector body (2), and the other end is fixed to the lifting plate (75).

6. A portable road smoothness measuring device according to claim 5, characterized in that: The transmission assembly (4) includes a first reversing wheel (41), a second reversing wheel (42), a third reversing wheel (43), and a fourth reversing wheel (44). The first reversing wheel (41) is coaxially fixed with the rotating rod (72). The first reversing wheel (41) meshes with the second reversing wheel (42) and rotates. The second reversing wheel (42) is fixedly connected with the third reversing wheel (43). A main drive wheel (472) is connected to the transmission chain (47). The main drive wheel (472) is coaxially fixed with the fourth reversing wheel (44). The third reversing wheel (43) and the fourth reversing wheel (44) mesh and drive each other.

7. The portable road smoothness measuring device according to claim 1, characterized in that: A handle (8) is rotatably connected to the housing (1), and the rotation axis of the handle (8) is perpendicular to the travel direction of the housing (1) and is horizontally arranged.

8. A portable road smoothness measuring device according to claim 7, characterized in that: The handle (8) is hinged to a limiting rod (82) at one end near the housing (1). A limiting groove (1231) is provided on the side plate (12) of the housing (1). When the housing (1) is lifted, the limiting rod (82) is limited in the limiting groove (1231).

9. A portable road smoothness measuring device according to claim 1, characterized in that: The two top plates (13) are respectively provided with a plug (132) and a slot (133) on the side close to each other, and the plug (132) and the slot (133) are inserted and connected.

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