Pavement flatness tester

Abstract

The utility model relates to the technical field of pavement detection, and discloses a pavement flatness tester which comprises an outer box, connecting blocks are fixedly connected to the periphery of the top surface of the outer box, and an inner box is slidably connected to the interior of the outer box. According to the pavement flatness tester, through the arrangement of the connecting rod, the limiting ring, the measuring column, the limiting rod and the U-shaped frame, when other areas need to be measured, the limiting rod is pulled out firstly, then the connecting rod is manually and vertically lifted, the measuring column is lifted to a proper position under the action of manpower and the limiting ring, and then the limiting rod is inserted, so that the effect of adjusting the height of the measuring column firstly is achieved; then through the arrangement of an inner box, a connecting block, a screw rod and a U-shaped frame, the inner box is moved left and right, the U-shaped frame is driven by the inner box to move, and when the U-shaped frame moves to a designated position, the screw rod on the connecting block is tightened for fixation, so that the effect of measuring areas on the left side and the right side is achieved, the whole device does not need to be moved repeatedly, and the measurement efficiency is improved.

Description

Technical Field

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

[0002] The on-site detection of the flatness of subgrade and pavement is a very important part of road engineering. In road engineering, the on-site detection technology of subgrade and pavement flatness has been continuously developed and improved to meet the increasingly strict requirements for road flatness and quality, and to improve the safety, comfort and service life of roads.

[0003] The commonly used road surface flatness tester at present is a spirit level. The test method is to place the spirit level horizontally on the ground, and gently push the vernier feeler gauge along the gap between the ruler and the ground. The error value can be read according to the scale. However, in actual operation, it is necessary to bend down and lower the head to find the drop area first, and then use the vernier feeler gauge to measure. When measuring the next place, it is also necessary to place the spirit level again and repeat the operation, which is rather troublesome.

[0004] A road surface flatness tester disclosed in the publication number CN218443704U, although it is a road surface flatness tester, includes a road surface flatness measuring instrument body, and a bubble spirit level is fixedly connected to the middle of the top of the road surface flatness measuring instrument body. The advantages of the utility model are as follows: Place the road surface flatness measuring instrument body close to the road surface, and ensure that the bottom of the road surface flatness measuring instrument body is flat and fits the road surface, and press the road surface flatness measuring instrument body firmly. Since a dense array of measuring head structures is arranged in the groove body of the road surface flatness measuring instrument body, if there is a depression at the road surface corresponding to the measuring head, the measuring head will enter the depression under the action of the spring. At this time, the indicator board corresponding to this measuring head drops, and the drop amount is displayed on the height scale. The height of the indicator board here is significantly different from the height of the indicator boards at other flat positions, so as to achieve the purpose of obtaining the drop value by placing the spirit level, achieve the purpose of rapid reading, no need to insert the vernier feeler gauge anymore, and it is convenient to use, solving the disadvantages existing in the prior art.

[0005] Although the above patent can achieve the purpose of obtaining the drop value by placing the spirit level, achieve the purpose of rapid reading, no need to insert the vernier feeler gauge anymore, and is convenient to use, solving the disadvantages existing in the prior art. However, after the measurement is completed, the entire tester still needs to be moved to the next measurement point, and the efficiency is relatively low.

[0006] Therefore, it is very necessary to propose a road surface flatness tester to solve the above problems. Content of the Utility Model

[0007] (1) Technical Problems to be Solved

[0008] The technical problem solved by the utility model is to provide a road surface flatness tester with high practicability, simple operation and relatively simple structure, which solves the problem that in actual operation in the above-mentioned background technology, it is necessary to bend down and lower the head to find the falling area first, and then use a vernier caliper to measure. When measuring the next place, it is also necessary to place the spirit level again and repeat the operation, which is rather troublesome.

[0009] (II) Technical solution

[0010] To achieve the above object, the utility model is realized through the following technical solutions: A road surface flatness tester includes an outer box. Connecting blocks are fixedly connected to the four sides of the top surface of the outer box. An inner box is slidably connected inside the outer box. U-shaped frames are fixedly connected to both sides of the top surface of the inner box. A connecting rod is slidably connected inside the U-shaped frames. A plurality of measuring columns are slidably connected to the surface of the connecting rod. A group of limiting rings are fixedly connected to the outside of each measuring column. A measuring mechanism is slidably connected to one side of the top surface of the inner box. A spirit level is fixedly connected to the other side of the top surface of the inner box. Supporting mechanisms are fixedly connected to the four sides of the bottom surface of the outer box.

[0011] Optionally, the measuring mechanism includes a sliding block slidably connected to one side of the top surface of the inner box. A graduated rod is rotatably connected to the outside of the sliding block. A group of limiting blocks A are fixedly connected to the top surface of the sliding block. A limiting block B is fixedly connected to the top surface of the sliding block. Slide columns are slidably connected inside the limiting blocks A, and the slide columns play a role in limiting.

[0012] Optionally, a threaded hole is opened in the middle of the connecting block, and a screw rod is threadedly connected inside the threaded hole. The screw rod plays a role in fixing.

[0013] Optionally, a plurality of limiting holes are opened on the surface of the U-shaped frame, and limiting rods are slidably connected inside the limiting holes. The limiting rods play a role in limiting.

[0014] Optionally, counterweight boxes are fixedly connected to the four sides of the bottom surface of the outer box, and counterweight blocks are placed inside the counterweight boxes. The counterweight blocks play a role in balancing.

[0015] Optionally, a plurality of through holes are opened inside the outer box and the inner box, and a chute is opened on one side of the top surface of the inner box. The chute plays a guiding role.

[0016] (III) Beneficial effects

[0017] The utility model provides a road surface flatness tester, which has the following beneficial effects:

[0018] 1. For this road surface flatness tester, through the settings of the connecting rod, limit ring, measuring column, limit rod, and U-shaped frame, when measuring other areas, first pull out the limit rod, and then manually lift the connecting rod vertically. Under the action of human force and the limit ring, the measuring column rises to an appropriate position and then the limit rod is inserted, which plays the role of adjusting the height of the measuring column first. Then, through the settings of the inner box, connecting block, screw, and U-shaped frame, move the inner box left and right. The inner box drives the U-shaped frame to move. When the U-shaped frame moves to the designated position, tighten the screw on the connecting block for fixation, which achieves the effect of measuring the areas on both left and right sides, without repeatedly moving the entire device, thus improving the measurement efficiency.

[0019] 2. For this road surface flatness tester, through the settings of the measuring mechanism and the measuring column, the measuring column contacts the ground under the action of gravity. Since the road surface flatness is uneven, the heights of the measuring columns are also different. The flatness trend of the ground can be clearly seen from the heights of the measuring columns. Then, rotate the scale rod to the vertical position and fix it with the limit block B and the sliding column. Moreover, the scale rod can move horizontally under the action of the sliding block, eliminating the need to lower the head to find the position and then use a vernier caliper for detection, which is convenient to use and allows for quick reading. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the measuring mechanism of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the support structure of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the thread structure of the present utility model.

[0024] In the figure: 1. Outer box; 2. Connecting block; 3. Inner box; 4. U-shaped frame; 5. Connecting rod; 6. Measuring column; 7. Limit ring; 8. Measuring mechanism; 801. Sliding block; 802. Scale rod; 803. Limit block A; 804. Limit block B; 805. Sliding column; 9. Level; 10. Support mechanism; 1001. Support frame A; 1002. Bolt A; 1003. Support frame B; 1004. Support tube; 1005. Bolt B; 11. Screw; 12. Limit rod; 13. Counterweight box; 14. Counterweight block. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a road surface flatness tester, which includes an outer box 1. Connecting blocks 2 are fixedly connected to the four peripheries of the top surface of the outer box 1. An inner box 3 is slidably connected inside the outer box 1. U-shaped frames 4 are fixedly connected to both sides of the top surface of the inner box 3. A connecting rod 5 is slidably connected inside the U-shaped frames 4. A plurality of measuring columns 6 are slidably connected to the surface of the connecting rod 5. A group of limit rings 7 are fixedly connected to the outside of the measuring columns 6. Through the settings of the connecting rod 5, the limit rings 7, the measuring columns 6, the limit rods 12 and the U-shaped frames 4, the function of adjusting the height of the measuring columns 6 first is achieved. Through the settings of the inner box 3, the connecting blocks 2, the screw rod 11 and the U-shaped frames 4, the effect of measuring the left and right regions is achieved, without repeatedly moving the entire device, improving the measurement efficiency. A measuring mechanism 8 is slidably connected to one side of the top surface of the inner box 3. Through the settings of the measuring mechanism 8 and the measuring columns 6, there is no need to lower the head to find the position and then use a vernier feeler gauge for detection, which is convenient to use and read. A level 9 is fixedly connected to the other side of the top surface of the inner box 3. Support mechanisms 10 are fixedly connected to the four peripheries of the bottom surface of the outer box 1.

[0027] Please refer to Figure 2 , the measuring mechanism 8 includes a sliding block 801 slidably connected to one side of the top surface of the inner box 3. A scale rod 802 is rotatably connected to the outside of the sliding block 801. A group of limit blocks A 803 are fixedly connected to the top surface of the sliding block 801. A limit block B 804 is fixedly connected to the top surface of the sliding block 801. Slide columns 805 are slidably connected inside the limit blocks A 803. The slide columns 805 play a role in limiting.

[0028] Please refer to Figure 1 , a threaded hole is opened in the middle of the connecting block 2, and a screw rod 11 is threadedly connected inside the threaded hole. The screw rod 11 plays a fixing role.

[0029] Please refer to Figure 1 , a plurality of limit holes are opened on the surface of the U-shaped frame 4, and limit rods 12 are slidably connected inside the limit holes. The limit rods 12 play a role in limiting.

[0030] Please refer to Figure 1 , counterweight boxes 13 are fixedly connected to the four peripheries of the bottom surface of the outer box 1. Counterweight blocks 14 are placed inside the counterweight boxes 13. The counterweight blocks 14 play a role in balancing.

[0031] Please refer to Figure 1 , a plurality of through holes are opened inside the outer box 1 and the inner box 3. A chute is opened on one side of the top surface of the inner box 3. The chute plays a guiding role.

[0032] Embodiment 1:

[0033] Please refer to Figure 3, the support mechanism 10 includes a support frame A1001 fixedly connected to the periphery of the bottom surface of the outer box 1. Threaded holes are provided on the surface of the support frame A1001, and a bolt A1002 is threadedly connected inside the threaded holes. Through the setting of the support mechanism 10, the tester can be measured without contacting the ground, maintaining environmental hygiene;

[0034] Embodiment 2:

[0035] Please refer to Figure 4 , the support mechanism 10 includes a support frame B1003 fixedly connected to the periphery of the bottom surface of the outer box 1. A support tube 1004 is slidably connected inside the support frame B1003. Threaded holes are provided on the surfaces of the support frame B1003 and the support tube 1004, and a bolt B1005 is threadedly connected inside the threaded holes. Through the setting of the bolt B1005, it plays a role in adjusting the height of the tester and facilitating the leveling instrument 9 to find the correct position.

[0036] In the present utility model, the working steps of the device are as follows:

[0037] The first step: The measuring column 6 contacts the ground under the action of gravity. Since the ground flatness is different, the height of the measuring column 6 is also different. The flatness trend of the ground can be clearly seen through the height of the measuring column 6. Then rotate the scale rod 802 to the vertical position and fix it with the limit block B804 and the sliding column 805. Moreover, the scale rod 802 can move horizontally under the action of the sliding block 801;

[0038] The second step: When measuring other areas, first pull out the limit rod 12, and then manually lift the connecting rod 5 vertically. After the measuring column 6 rises to an appropriate position under the action of human force and the limit ring 7, insert the limit rod 12 again;

[0039] The third step: Move the inner box 3 left and right. The inner box 3 drives the U-shaped frame 4 to move. When the U-shaped frame 4 moves to the designated position, tighten the screw 11 on the connecting block 2 to fix it.

[0040] It should be noted that the device structure and drawings of the present utility model mainly describe the principle of the present utility model. In terms of the technical principle of this design, the settings of the power mechanism, power supply system, control system, etc. of the device are not fully described clearly. However, on the premise that those skilled in the art understand the principle of the above-mentioned utility model, the specific power mechanism, power supply system, and control system can be clearly known. The control method of the application document is automatically controlled through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art;

[0041] The standard parts used therein can all be purchased from the market, and can all be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the components known to those skilled in the art, their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A road surface roughness tester, comprising an outer box (1), characterized in that: The top surface of the outer box (1) is fixedly connected with a connecting block (2) around the periphery, the inner box (3) is slidably connected inside the outer box (1), the top surface of the inner box (3) is fixedly connected with a U-shaped frame (4) on both sides, the U-shaped frame (4) is slidably connected inside with a connecting rod (5), the surface of the connecting rod (5) is slidably connected with a plurality of measuring columns (6), the outside of each of the measuring columns (6) is fixedly connected with a group of limiting rings (7), one side of the top surface of the inner box (3) is slidably connected with a measuring mechanism (8), the other side of the top surface of the inner box (3) is fixedly connected with a level (9), and the bottom surface of the outer box (1) is fixedly connected with a supporting mechanism (10) around the periphery.

2. A road surface roughness tester according to claim 1, characterized in that: The measuring mechanism (8) comprises a sliding block (801) slidably connected to one side of the top surface of the inner box (3); the outside of the sliding block (801) is rotatably connected to a scale rod (802); the top surface of the sliding block (801) is fixedly connected to a group of limit blocks A (803); the top surface of the sliding block (801) is fixedly connected to a limit block B (804); and the inside of each of the limit blocks A (803) is slidably connected to a sliding column (805).

3. A road surface roughness tester according to claim 1, characterized in that: A threaded hole is provided in the middle of the connection block (2), and a screw rod (11) is threadedly connected inside the threaded hole.

4. A road surface roughness tester according to claim 1, characterized in that: A plurality of limiting holes are provided on the surface of the U-shaped frame (4), and the inside of the limiting holes is slidably connected to the limiting rods (12).

5. A road surface roughness tester according to claim 1, characterized in that: The bottom surface of the outer box (1) is fixedly connected to a counterweight box (13) at all four sides, and a counterweight block (14) is placed inside the counterweight box (13).

6. A road surface roughness tester according to claim 1, characterized in that: A plurality of through holes are provided inside the outer box (1) and the inner box (3), and a sliding groove is provided on one side of the top surface of the inner box (3).

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