Folding pavement flatness tester

Abstract

The utility model discloses a folding type road surface flatness tester which comprises a base, a cross rod, a folding part for reducing the volume and an adjusting part for measuring different road surfaces, the folding part comprises a supporting frame, a rotating shaft connected with the supporting frame, a locking disc fixedly connected with the outer side of one end of the rotating shaft, a groove formed in one side of the locking disc, a guide rod connected with the groove, a first spring connected with one end of the guide rod and a movable plate connected with the other end of the guide rod. Through the arrangement of the base, the cross rod and the folding part, the problems that when an existing tester is used, although the tester can measure the flatness of a road surface, the cross rod cannot be folded, the flatness of the road surface cannot be measured, the flatness of the road surface cannot be folded, and the flatness of the road surface cannot be measured are solved. And the problems that the whole tester occupies a relatively large transportation space when being transported, the transportation is not convenient enough, and the practicability is insufficient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface detection equipment, in particular to a foldable road surface flatness measuring instrument. Background Art

[0002] Flatness is one of the important indicators of road construction quality and service level. Uneven road surface will increase driving resistance and cause additional vibration to the vehicle. This vibration will cause driving bumps, affecting driving speed and safety, driving stability and passenger comfort. The road surface flatness meter is mainly used for construction inspection, completion acceptance, and road maintenance of high-grade highways, urban roads, airport runways and other road projects.

[0003] The existing patent CN217922966U discloses a new type of roadbed and pavement flatness measuring instrument, including a vertical plate, a crossbar fixed vertically to the side wall of the vertical plate, a horizontally arranged limit groove is provided on the crossbar, a limit block is slidably provided inside the limit groove, a positioning column is fixedly connected to the front end of the limit block, a positioning groove is provided on the positioning column, and a guide rod is slidably provided inside the positioning groove. The new type of roadbed and pavement flatness measuring instrument, by providing the vertical plate, the crossbar, the limit block, and the positioning column, when the device is needed, only the vertical plate needs to be carried by hand to transfer the device to the designated working position, and the measurement is fast and efficient. At this time, the vertical plate is set on the ground, the roller contacts the ground, the horizontal indicator line corresponds to the vertical scale, and the vertical position can be read. By moving the limit block and the positioning column in the horizontal direction, the roller rolls on the ground at this time, and data measurement at different positions is realized.

[0004] Based on the search of the above patents and in combination with the measuring instruments in the prior art, it was found that although the above measuring instruments can measure the flatness of the road surface when in use, the cross bar cannot be folded, resulting in the entire measuring instrument occupying a relatively large transportation space during transportation, which is not convenient to transport and thus leads to insufficient practicality. Utility Model Content

[0005] The purpose of the utility model is to provide a foldable road surface roughness measuring instrument to solve the problem that the existing measuring instrument proposed in the above background technology can measure the road surface roughness when in use, but the cross bar cannot be folded, resulting in the entire measuring instrument occupying a relatively large transportation space during transportation, which is not convenient to transport and thus leads to the problem of insufficient practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foldable road surface flatness measuring instrument, comprising a base, a cross bar, a folding component for reducing the volume and an adjusting component for measuring different road surfaces, the folding component comprising a support frame, a rotating shaft connected to the support frame, a locking plate fixedly connected to the outer side of one end of the rotating shaft, a groove opened on one side of the locking plate, a guide rod connected to the groove, a first spring connected to one end of the guide rod, a movable plate connected to the other end of the guide rod, a locking rod fixedly connected to one side of the movable plate, and a plurality of locking holes arranged in a circle opened on one side of the support frame, the rotating shaft is rotatably connected to the support frame, the rotating shaft is fixedly connected to the cross bar, the guide rod is slidably connected to the groove, the locking rod is slidably connected to the locking hole, and the locking rod passes through the locking plate and is slidably connected to the locking plate.

[0007] Preferably, the adjusting component includes a vertical plate connected to the top of the base, a slide groove opened on the vertical plate, a slider connected to the slide groove and a screw rod connected to the slider, the screw rod passes through the slider and is threadedly connected to the slider, the screw rod passes through the vertical plate and is rotatably connected to the vertical plate, the slider is slidably connected to the slide groove, and the support frame is fixedly connected to the slider.

[0008] Preferably, rotation grooves are respectively opened on both sides of the support frame, and rotation plates are respectively fixedly connected to both outer sides of the rotating shaft, and the rotating plates are slidably connected to the rotation grooves.

[0009] Preferably, limiting grooves are respectively provided on both sides of the groove, limiting plates are respectively fixedly connected to both sides of the guide rod, and the limiting plates are slidably connected to the limiting grooves.

[0010] Preferably, a connecting plate is fixedly connected to the top of the screw rod, and a rotating handle is fixedly connected to one side of the top of the connecting plate.

[0011] Preferably, a movable groove is provided on the top of the cross bar, a movable block is slidably connected in the movable groove, a vertical indication line is provided on one side of the movable block, a horizontal scale is provided on the cross bar, a positioning groove is provided on the top of the movable block, a positioning block is slidably connected in the positioning groove, a second spring is fixedly connected to the bottom of the positioning block, a push rod is fixedly connected to the bottom of the positioning block, a roller is fixedly connected to the bottom of the push rod, a vertical scale is provided on the other side of the movable block, and a horizontal indication line is provided on the positioning block.

[0012] Preferably, a non-slip pad is provided at the bottom of the base, and the non-slip pad is adhered to the base.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting a base, a cross bar and a folding component, the guide rod and the locking rod can be driven to move by pulling the moving plate, the movement of the guide rod can pull the first spring to deform it, the movement of the locking rod can be separated from the lock hole, and then the rotating shaft can be released, and then the cross bar can be rotated, and the cross bar can be folded, and the first spring can be reset to allow the locking rod to be inserted into the lock hole, and the folded cross bar can be fixed, which can reduce the volume of the instrument, and then reduce the space occupied, and then it can be convenient to carry and transport, greatly improving practicality and efficiency;

[0015] 2. By setting up an adjustment component, by twisting the screw, the rotation of the screw can drive the slider to move up and down in the slide groove, and then drive the cross bar to move. The height of the roller can be adjusted according to needs, so that the roller can better contact with the ground, which can increase the measurement application range and further improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure provided by the utility model;

[0017] Figure 2 A left side view provided for the utility model;

[0018] Figure 3 The utility model provides Figure 2 The three-dimensional cross-section view at AA in the middle;

[0019] Figure 4 The utility model provides Figure 3 Enlarged view of point C in the middle;

[0020] Figure 5 The utility model provides Figure 2 Three-dimensional cross-section view at the middle BB.

[0021] In the figure: 1, base; 11, cross bar; 21, support frame; 22, rotating shaft; 23, locking plate; 24, groove; 25, guide rod; 26, first spring; 27, moving plate; 28, locking rod; 29, locking hole; 31, vertical plate; 32, slide groove; 33, slider; 34, screw rod; 41, rotating groove; 42, rotating plate; 51, limit groove; 52, limit plate; 61, connecting plate; 62, rotating handle; 71, moving groove; 72, moving block; 73, vertical indicator line; 74, horizontal scale; 75, positioning groove; 76, positioning block; 77, second spring; 78, push rod; 79, roller; 80, vertical scale; 81, horizontal indicator line; 111, anti-slip pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5The utility model provides a technical solution: a foldable road surface flatness measuring instrument, comprising a base 1, a cross bar 11, a folding component for reducing the volume and an adjusting component for measuring different road surfaces, the folding component comprises a support frame 21, a rotating shaft 22 connected to the support frame 21, a locking plate 23 fixedly connected to the outer side of one end of the rotating shaft 22, a groove 24 opened on one side of the locking plate 23, a guide rod 25 connected to the groove 24, a first spring 26 connected to one end of the guide rod 25, a moving plate 27 connected to the other end of the guide rod 25, a locking rod 28 fixedly connected to one side of the moving plate 27, and a plurality of locking holes 29 arranged in a circle opened on one side of the support frame 21, the rotating shaft 22 is rotatably connected to the support frame 21, the rotating shaft 22 is fixedly connected to the cross bar 11, the guide rod 25 is connected to the cross bar 11, and the guide rod 25 is connected to the cross bar 11. The rod 25 is slidably connected with the groove 24, and the locking rod 28 is slidably connected with the locking hole 29. The locking rod 28 penetrates the locking plate 23 and is slidably connected with the locking plate 23. The guide rod 25 and the locking rod 28 can be driven to move by pulling the movable plate 27. The guide rod 25 moves to pull the first spring 26 to deform it, and the locking rod 28 moves out of the locking hole 29, which can facilitate the rotation of the rotating shaft 22. The rotating shaft 22 can drive the cross bar 11 to fold. The elasticity of the first spring 26 can be used to push the locking rod 28 to be inserted into other locking holes 29, so that the folded cross bar 11 can be fixed, thereby reducing the volume of the instrument, reducing its occupied space, and facilitating transportation. Rotation grooves 41 are respectively provided on both sides of the support frame 21, and rotating plates 42 are respectively fixedly connected to the outer sides of the rotating shaft 22. The plate 42 is slidably connected with the rotating groove 41, and the rotating plate 42 can rotate together with the rotating shaft 22, and can support and guide the rotation of the rotating shaft 22, so as to improve the rotation stability of the rotating shaft 22 and prevent the rotating shaft 22 from swinging. Limiting grooves 51 are respectively provided on both sides of the groove 24, and limiting plates 52 are respectively fixedly connected on both sides of the guide rod 25. The limiting plates 52 are slidably connected with the limiting grooves 51, and the limiting plates 52 can move simultaneously with the guide rod 25, so as to limit the moving distance of the guide rod 25, thereby preventing the guide rod 25 from escaping from the groove 24, and preventing the first spring 26 from being damaged by excessive deformation. A moving groove 71 is provided on the top of the cross bar 11, and a moving block 72 is slidably connected in the moving groove 71. A vertical indicating line 73 is provided on one side of the moving block 72. A horizontal scale 74 is provided, a positioning groove 75 is provided on the top of the moving block 72, a positioning block 76 is slidably connected in the positioning groove 75, a second spring 77 is fixedly connected to the bottom of the positioning block 76, a push rod 78 is fixedly connected to the bottom of the positioning block 76, a roller 79 is fixedly connected to the bottom of the push rod 78, a vertical scale 80 is provided on the other side of the moving block 72, and a horizontal indication line 81 is provided on the positioning block 76. When the base 1 contacts the road surface, the positioning block 76 moves in the positioning groove 75, and can push the roller 79 to contact the ground. The horizontal indication line 81 corresponds to the vertical scale 80, and the vertical position can be read. By moving the moving block 72 and the positioning block 76 in the horizontal direction, the roller 79 rolls on the ground at this time, and data measurement at different positions is realized.The bottom of the base 1 is provided with an anti-skid pad 111, which is adhered to the base 1. The anti-skid pad 111 can increase the friction between the base 1 and the road surface, improve the stability of the base 1, and prevent the base 1 from shifting during measurement.

[0024] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 5 The adjusting component includes a vertical plate 31 connected to the top of the base 1, a slide groove 32 opened on the vertical plate 31, a slider 33 connected to the slide groove 32 and a screw rod 34 connected to the slider 33, the screw rod 34 passes through the slider 33 and is screwed with the slider 33, the screw rod 34 passes through the vertical plate 31 and is rotatably connected to the vertical plate 31, the slider 33 is slidably connected to the slide groove 32, the support frame 21 is fixedly connected to the slider 33, and when the screw rod 34 rotates, it can drive the slider 33 to slide in the slide groove 32, and the sliding of the slider 33 can drive the cross bar 11 to adjust the height at the same time, so that the height of the roller 79 can be adjusted according to needs, and the measurement application range can be improved. The top of the screw rod 34 is fixedly connected to a connecting plate 61, and a rotating handle 62 is fixedly connected to one side of the top of the connecting plate 61. The rotating handle 62 can drive the connecting plate 61 to rotate synchronously, so that it is convenient to drive the screw rod 34 to rotate, and the cross bar 11 and the roller 79 can be better driven to adjust the height.

[0025] Working principle: When working, first pull the moving plate 27. The movement of the moving plate 27 can drive the guide rod 25 and the locking rod 28 to move. The movement of the guide rod 25 pulls the first spring 26 to deform it, and the locking rod 28 moves out of the current locking hole 29. Then rotate the moving plate 27, which can drive the rotating shaft 22 to rotate, and then drive the cross bar 11 to rotate, so that the cross bar 11 rotates to a horizontal position. Then release the moving plate 27, and the first spring 26 resets to make the locking rod 28 snap into the locking hole 29, so that the adjusted cross bar 11 can be fixed. Then place the base 1 on the road surface, and the anti-skid pad 111 contacts the road surface to increase friction and improve the stability of the base 1. Then, according to the height of the road surface, rotate the rotating handle 62. The rotating handle 62 can drive the connecting plate 61 to rotate. The rotation of the connecting plate 61 can drive the screw rod 34 to rotate. The rotation of the screw rod 34 can drive the slider 33 The roller 79 can slide in the slide groove 32, and then the height of the roller 79 can be driven. After adjusting to the appropriate position, the positioning block 76 can be pushed to move in the positioning groove 75 so that the roller 79 contacts the ground. The horizontal indicator line 81 corresponds to the vertical scale 80, and the vertical position can be read. By moving the movable block 72 and the positioning block 76 in the horizontal direction, the roller 79 rolls on the ground to achieve data measurement at different positions. After the measurement is completed, the movable plate 27 is pulled again to disengage the locking rod 28 from the locking hole 29, and then the movable plate 27 is released after the cross bar 11 is folded 90 degrees, so that the locking rod 28 is stuck in the locking hole 29, and the folded cross bar 11 can be fixed, which is convenient for transportation to different positions for measurement. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foldable road surface roughness measuring instrument, comprising a base (1), a crossbar (11), a folding component for reducing the volume, and an adjustment component for measuring different road surfaces, characterized in that: The folding component comprises a support frame (21), a rotating shaft (22) connected to the support frame (21), a locking plate (23) fixedly connected to the outer side of one end of the rotating shaft (22), a groove (24) provided at one side of the locking plate (23), a guide rod (25) connected to the groove (24), a first spring (26) connected to one end of the guide rod (25), a moving plate (27) connected to the other end of the guide rod (25), a locking rod (28) fixedly connected to one side of the moving plate (27), and a plurality of locking holes (29) arranged in a circumference provided at one side of the support frame (21), wherein the rotating shaft (22) is rotatably connected to the support frame (21), the rotating shaft (22) is fixedly connected to the cross bar (11), the guide rod (25) is slidably connected to the groove (24), the locking rod (28) is slidably connected to the locking hole (29), and the locking rod (28) passes through the locking plate (23) and is slidably connected to the locking plate (23).

2. A foldable road surface roughness measuring instrument according to claim 1, characterized in that: The adjusting component comprises a vertical plate (31) connected to the top of the base (1), a slide groove (32) provided on the vertical plate (31), a slider (33) connected to the slide groove (32), and a screw rod (34) connected to the slider (33); the screw rod (34) passes through the slider (33) and is screwed to the slider (33); the screw rod (34) passes through the vertical plate (31) and is rotationally connected to the vertical plate (31); the slider (33) is slidably connected to the slide groove (32); and the support frame (21) is fixedly connected to the slider (33).

3. The foldable road surface roughness measuring instrument according to claim 1, characterized in that: Rotation grooves (41) are respectively provided on both sides of the support frame (21), and rotation plates (42) are respectively fixedly connected to both outer sides of the rotation shaft (22), and the rotation plates (42) are slidably connected to the rotation grooves (41).

4. The foldable road surface roughness measuring instrument according to claim 1, characterized in that: Limiting grooves (51) are respectively provided on both sides of the groove (24), and limiting plates (52) are respectively fixedly connected to both sides of the guide rod (25), and the limiting plates (52) are slidably connected to the limiting grooves (51).

5. The foldable road surface roughness measuring instrument according to claim 2, characterized in that: A connecting plate (61) is fixedly connected to the top of the screw rod (34), and a rotating handle (62) is fixedly connected to one side of the top of the connecting plate (61).

6. The foldable road surface roughness measuring instrument according to claim 1, characterized in that: The cross bar (11) is provided with a moving groove (71) at the top, a moving block (72) is slidably connected in the moving groove (71), a vertical indication line (73) is provided on one side of the moving block (72), a horizontal scale (74) is provided on the cross bar (11), a positioning groove (75) is provided at the top of the moving block (72), a positioning block (76) is slidably connected in the positioning groove (75), a second spring (77) is fixedly connected at the bottom of the positioning block (76), a push rod (78) is fixedly connected at the bottom of the positioning block (76), a roller (79) is fixedly connected at the bottom of the push rod (78), a vertical scale (80) is provided on the other side of the moving block (72), and a horizontal indication line (81) is provided on the positioning block (76).

7. The foldable road surface roughness measuring instrument according to claim 1, characterized in that: An anti-skid pad (111) is provided at the bottom of the base (1), and the anti-skid pad (111) is adhered to the base (1).

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