Pavement flatness detector for highway design

Abstract

The utility model relates to the technical field of flatness detectors, in particular to a pavement flatness detector for highway design, which comprises a first support frame and a second support frame, and the adjacent end parts of the first support frame and the second support frame are rotationally connected through a hinge. Compared with the prior art, the road surface flatness measuring device has the advantages that the first supporting frame, the second supporting frame, the two first horizontal blocks and the two second horizontal blocks are arranged, the first supporting frame and the second supporting frame rotate relatively through the hinge, the butt joint rods are installed in the two second horizontal blocks in a sliding mode, and after the road surface flatness is measured, the butt joint rods are connected with the butt joint rods in a sliding mode. The storage rack is detached, then two blocking rods slide along limiting grooves, a butt joint rod slides out of the interior of a first horizontal block, accordingly, a first supporting frame is pushed to turn to the top end position of a second supporting frame, the overall length size is reduced, folding transportation is facilitated, and therefore the problems existing in the prior art are effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of road surface smoothness testing instruments, and in particular to a road surface smoothness testing instrument for highway design. Background Technology

[0002] The road surface smoothness tester is a specialized instrument used to measure the degree of undulation of paved surfaces such as roads and airport runways, and to evaluate their construction quality, performance or maintenance requirements using quantitative indicators (such as the International Roughness Index and standard deviation σ value). The instrument consists of a traction frame, front and rear axles, a measuring frame composed of eight inflatable wheels, displacement sensors, distance sensors and a main control unit.

[0003] Traditional road surface evenness testing instruments are usually integral structures. After the road surface evenness test is completed, they are not convenient to fold and store, and they occupy a lot of space, which has a certain impact on the transportation stage. At the same time, the evenness testing instrument is placed directly on the top of the tow frame, which is prone to falling during the testing stage. Based on this, a road surface evenness testing instrument for highway design is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a road surface smoothness testing instrument for highway design, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a road surface smoothness testing instrument for highway design, including a first support frame and a second support frame, which are rotatably connected at adjacent ends by a hinge. Two first horizontal blocks and two second horizontal blocks with hollow structures are respectively installed inside the adjacent ends of the first and second support frames. A limiting groove is formed on the bottom surface of each of the two second horizontal blocks, and the limiting groove extends downward through the second support frame. A horizontally sliding connecting rod is installed inside each of the two second horizontal blocks, and the other end of each connecting rod is inserted into the two first horizontal blocks. A placement frame is installed at the top of the second support frame, and the testing instrument body is installed inside the placement frame. A horizontally sliding blocking rod is installed at one end of the placement frame, and hooks for limiting the movement of the testing instrument body are installed on one side of the top of the placement frame and the top surface of the blocking rod.

[0006] Preferably, in any of the above solutions, the first support frame and the second support frame have the same external dimensions. In this solution, both the first support frame and the second support frame adopt a hollow structure to minimize their relative weight. Rotating wheels are rotatably installed at the two corners of the second support frame away from the end of the first support frame. These wheels are connected to external vehicles via metal connecting rods, thereby facilitating the overall steering of the flatness detector.

[0007] Preferably, in any of the above solutions, a protruding rod is installed in the middle of both connecting rods, and the bottom end of both protruding rods protrudes from the limiting groove. This solution facilitates the fixed connection between the protruding rod and the connecting rod. The bottom end of the protruding rod protrudes outward, which provides a holding position for the operator to slide the connecting rod horizontally. At the same time, after the connecting frame and the placement frame are fixedly connected, one end of the connecting frame pushes the protruding rod, thereby limiting the position of the protruding rod and the connecting rod.

[0008] Preferably, in any of the above solutions, the placement frame adopts a hollow design, and connecting frames covering the outer wall of the second support frame are installed on both sides of the bottom surface of the placement frame. The same end of both connecting frames protrudes outward and blocks the protruding rod. By using this solution, it is easy to make the connecting frame fit tightly against the outer wall of the second support frame, and the two ends of the connecting frame are fixedly connected to the placement frame by bolts, which facilitates the position locking of the placement frame. At the same time, the protruding rod is limited, so that the placement frame is in a stable state, providing a placement position for the detector body.

[0009] Preferably, in any of the above solutions, two guide brackets are installed on both sides of the placement frame near the blocking rod, and the four guide brackets are slidably connected to both ends of the blocking rod. By using this solution, it is convenient to limit the blocking rod so that the blocking rod can only slide horizontally, thereby facilitating the later pulling of the blocking rod to place or remove the detector body.

[0010] Preferably, in any of the above solutions, the two ends of the blocking rod are bent and fit against the side of the placement frame. Tension springs are installed at both ends of the blocking rod and at the middle of both sides of the placement frame. This solution facilitates the pulling of the ends of the blocking rod, causing the blocking rod to be close to the opening of the placement frame, thus limiting the detection instrument body and preventing the detection instrument body from falling.

[0011] This utility model has the following advantages:

[0012] 1. This road surface smoothness testing instrument for highway design comprises a first support frame, a second support frame, two first horizontal blocks, and two second horizontal blocks. The first and second support frames rotate relative to each other via hinges. Connecting rods are slidably installed inside each of the two second horizontal blocks. After measuring the road surface smoothness, the mounting frame is disassembled. Then, two blocking rods slide along limiting grooves, causing the connecting rods to slide out from inside the first horizontal blocks. This pushes the first support frame to the top position of the second support frame, reducing the overall length and facilitating folding and transportation, thus effectively solving the problems existing in the prior art.

[0013] 2. This road surface smoothness testing instrument for highway design comprises a mounting frame, four guide seats, a blocking rod, and two tension springs. The tension springs are installed at both ends of the blocking rod and in the middle of the mounting frame. The guide seats limit the horizontal sliding of the blocking rod. At the same time, two hooks are installed on the top surface of the blocking rod and one side of the top surface of the mounting frame. The two tension springs facilitate the pulling of the blocking rod, so that the testing instrument body is stably confined inside the mounting frame, preventing the testing instrument body from shaking during the testing process, thereby effectively solving the problems existing in the prior art. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall unfolded structure of this utility model;

[0015] Figure 2 This is a partial cross-sectional view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall folding structure of this utility model;

[0017] Figure 4 This is an exploded structural diagram of the placement rack and connecting rack of this utility model;

[0018] Figure 5 This is a schematic diagram of the exploded structure of the first horizontal block and the second horizontal block of this utility model.

[0019] In the diagram: 1-First support frame, 2-Second support frame, 3-Placement frame, 4-Detector body, 5-Blocking rod, 6-Connecting frame, 7-Dialing rod, 8-First horizontal block, 9-Limiting groove, 10-Second horizontal block, 12-Hook, 13-Guide seat, 14-Tension spring, 15-Protruding rod. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0021] like Figures 1 to 5 As shown, a road surface smoothness testing instrument for highway design includes a first support frame 1 and a second support frame 2, which are rotatably connected at adjacent ends by hinges. Two first horizontal blocks 8 and two second horizontal blocks 10 with hollow structures are respectively installed inside the adjacent ends of the first support frame 1 and the second support frame 2. The bottom surface of each of the two second horizontal blocks 10 is provided with a limiting groove 9, which extends downward through the second support frame 2. The interior of each of the two second horizontal blocks 10 is equipped with a horizontally sliding connecting rod 7, and the other end of each connecting rod 7 is inserted into the two first horizontal blocks 8 respectively.

[0022] The top of the second support frame 2 is equipped with a placement frame 3, and the detector body 4 is installed inside the placement frame 3. A rotatable detection wheel is installed in the middle of the bottom surface of the first support frame 1, and a coil spring is installed at the rotation position of the detection wheel and the first support frame 1 to provide a certain pressure to the detection wheel, so that the detection wheel can be in close contact with the road surface and generate vertical displacement with the undulation of the road surface. In addition, a sensor is installed on the first support frame 1 near the detection wheel. The sensor is electrically connected to the detector body 4 through a wire to enable the detector body 4 to collect and record the changes in road surface undulation.

[0023] One end of the placement rack 3 is equipped with a horizontally sliding stop bar 5. The top side of the top of the placement rack 3 and the top surface of the stop bar 5 are equipped with hooks 12 to limit the detection instrument body 4. The four hooks 12 are locked on both sides of the detection instrument body 4, thereby limiting the detection instrument body 4.

[0024] The first support frame 1 and the second support frame 2 have the same external dimensions. As an optional technical solution of this utility model, both the first support frame 1 and the second support frame 2 adopt a hollow structure to minimize their relative weight. Rotating wheels are rotatably installed at the two corners of the second support frame 2 away from the end of the first support frame 1. They are connected to external vehicles through metal connecting rods, which facilitates the overall steering of the flatness detector.

[0025] Both connecting rods 7 have protruding rods 15 installed in the middle. The bottom ends of both protruding rods 15 protrude from the limiting grooves 9. As an optional technical solution of this utility model, this facilitates the fixed connection between the protruding rods 15 and the connecting rods 7. The bottom ends of the protruding rods 15 protrude outward to provide a holding position for the operator to slide the connecting rods 7 horizontally. At the same time, after the connecting frame 6 is fixedly connected to the placement frame 3, one end of the connecting frame 6 pushes the protruding rods 15, thereby limiting the position of the protruding rods 15 and the connecting rods 7.

[0026] The placement frame 3 adopts a hollow design. Both sides of the bottom surface of the placement frame 3 are equipped with connecting frames 6 that cover the outer wall of the second support frame 2. The same end of the two connecting frames 6 protrudes outward and blocks the protruding rod 15. As an optional technical solution of this utility model, this makes it easy for the connecting frame 6 to fit tightly against the outer wall of the second support frame 2. The two ends of the connecting frame 6 are fixedly connected to the placement frame 3 by bolts, which facilitates the position locking of the placement frame 3. At the same time, the protruding rod 15 is limited, so that the placement frame 3 is in a stable state, providing a placement position for the detector body 4.

[0027] Two guide brackets 13 are installed on both sides of the placement frame 3 near the blocking rod 5. The four guide brackets 13 are slidably connected to both ends of the blocking rod 5. As an optional technical solution of this utility model, this makes it easier to limit the blocking rod 5 so that the blocking rod 5 can only slide horizontally, thereby facilitating the later pulling of the blocking rod 5 to place or remove the detector body 4.

[0028] The two ends of the blocking rod 5 are bent and fit against the side of the placement frame 3. Tension springs 14 are installed at both ends of the blocking rod 5 and the middle of both sides of the placement frame 3. As an optional technical solution of this utility model, this makes it easy to pull the end of the blocking rod 5, so that the blocking rod 5 is close to the opening of the placement frame 3, limiting the detection instrument body 5 and preventing the detection instrument body 5 from falling.

[0029] The following steps are required when using this road surface smoothness testing instrument for highway design:

[0030] 1) During disassembly, remove the two connecting brackets 6 from the placement bracket 3, and take all three off separately;

[0031] 2) Then, the protruding rod 15 slides along the limiting groove 9, while the connecting rod 7 slides from the inside of the first horizontal block 8;

[0032] 3) Push the first support frame 1 to rotate between the hinge and the end of the second support frame 2, so that the first support frame 1 rotates to the position above the second support frame 2.

[0033] In summary, when in use, the user sets up a first support frame 1, a second support frame 2, two first horizontal blocks 8, and two second horizontal blocks 10. The first support frame 1 and the second support frame 2 rotate relative to each other via hinges. Connecting rods 7 are slidably installed inside each of the two second horizontal blocks 10. After measuring the road surface flatness, the placement frame 3 is disassembled. Then, the two blocking rods 5 slide along the limiting grooves 9, causing the connecting rods 7 to slide out from inside the first horizontal blocks 8. This pushes the first support frame 1 to the top position of the second support frame 2, reducing the overall length and facilitating folding. The transportation method effectively solves the problems existing in the prior art. Furthermore, the system utilizes a placement frame 3, four guide seats 13, a blocking rod 5, and two tension springs 14. The tension springs 14 are installed at both ends of the blocking rod 5 and in the middle of the placement frame 3. The guide seats 13 limit the horizontal sliding of the blocking rod 5. Simultaneously, two hooks 12 are installed on the top surface of the blocking rod 5 and one side of the top surface of the placement frame 3. The two tension springs 14 then facilitate the pulling of the blocking rod 5, ensuring the detector body 4 is stably confined within the placement frame 3, preventing the detector body 4 from shaking during the testing process. This effectively solves the problems existing in the prior art.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A road surface smoothness testing instrument for highway design, characterized in that: The device includes a first support frame (1) and a second support frame (2), which are rotatably connected at their adjacent ends by a hinge. The first support frame (1) and the second support frame (2) are respectively equipped with two first horizontal blocks (8) and two second horizontal blocks (10) with hollow structures at their adjacent ends. The bottom surfaces of the two second horizontal blocks (10) are provided with limiting grooves (9), which penetrate downward through the second support frame (2). The two second horizontal blocks (10) are each equipped with a horizontally sliding connecting rod (7), and the other ends of the two connecting rods (7) are respectively inserted into the two first horizontal blocks (8). The top of the second support frame (2) is equipped with a placement frame (3), and the inside of the placement frame (3) is equipped with a detector body (4). One end of the placement frame (3) is equipped with a horizontally sliding blocking rod (5), and the top side of the top of the placement frame (3) and the top surface of the blocking rod (5) are equipped with hooks (12) to limit the detector body (4).

2. The road surface smoothness testing instrument for highway design according to claim 1, characterized in that: The first support frame (1) and the second support frame (2) have the same external dimensions.

3. The road surface smoothness testing instrument for highway design according to claim 2, characterized in that: Both of the two connecting rods (7) are equipped with protruding rods (15) in the middle, and the bottom ends of the two protruding rods (15) protrude from the limiting groove (9).

4. A road surface smoothness testing instrument for highway design according to claim 3, characterized in that: The placement rack (3) adopts a hollow design. Both sides of the bottom surface of the placement rack (3) are equipped with connecting racks (6) covering the outer wall of the second support rack (2). The same end of the two connecting racks (6) protrudes outward and blocks the protruding rod (15).

5. A road surface smoothness testing instrument for highway design according to claim 4, characterized in that: The placement rack (3) is equipped with two guide brackets (13) on both sides near the blocking rod (5), and the four guide brackets (13) are slidably connected to both ends of the blocking rod (5).

6. A road surface smoothness testing instrument for highway design according to claim 5, characterized in that: The two ends of the blocking rod (5) are bent and fit against the side of the placement frame (3). Tension springs (14) are installed at both ends of the blocking rod (5) and at the middle of both sides of the placement frame (3).

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