Highway pavement flatness detection device

Abstract

The utility model discloses a highway pavement flatness detection device, and belongs to the technical field of highway pavement detection.The detection device comprises a pavement flatness detector vehicle body and an assembly frame installed on the pavement flatness detector vehicle body, and walking wheels are distributed at the lower end of the pavement flatness detector vehicle body at equal intervals; a wheel carrier is rotationally connected to the assembly frame, a measuring wheel is arranged at one end of the wheel carrier, a magnetic block is arranged at the other end of the wheel carrier, and a sensor corresponding to the magnetic block is arranged on the road surface flatness detector vehicle body; transverse movement of the clamping plates is achieved through rotation of the lead screw, the collection control box located between the two clamping plates is clamped or loosened, the surface of the positioning rod is plated with hard chromium, the positioning rod is matched with a linear bearing of the arm plate, it is ensured that the clamping plates move stably, and finally the two clamping plates get close to each other and clamp and fix the collection control box. If the acquisition control box needs to be taken down in the later period, the screw rod only needs to be manually and reversely rotated.

Description

Technical Field

[0001] This application relates to the field of highway pavement testing technology, specifically a highway pavement smoothness testing device. Background Technology

[0002] Road surface smoothness testing is one of the important means of evaluating road surface quality, which is directly related to road driving safety and comfort. In order to effectively measure road surface smoothness, the existing testing equipment usually uses an eight-wheel road surface smoothness tester. This equipment uses multiple wheels in conjunction with sensors to scan the road surface and collect data. Then, the data is recorded and processed through the acquisition control box to obtain the evaluation result of road surface smoothness.

[0003] Existing eight-wheel road surface evenness testers typically rely on a data acquisition and control box to record and transmit measurement data. This control box needs to be connected to the measuring wheel and sensors to collect and store the measurement data and transmit it to subsequent processing equipment. However, existing evenness testers often lack effective measures to secure the data acquisition and control box during use. Since there is no special design on the frame to fix the control box, it is easy for the control box to fall off due to frame vibration or external impact, resulting in equipment damage, data loss, or work interruption.

[0004] Therefore, this application provides a highway pavement smoothness testing device to solve the above problems. Utility Model Content

[0005] This application provides a highway pavement smoothness detection device, which aims to solve the problem mentioned in the background art that, since there is no special design on the vehicle frame to fix the acquisition control box, the acquisition control box is prone to falling off due to vehicle frame vibration or external impact, resulting in equipment damage, data loss or work interruption.

[0006] To achieve the above objectives, this application provides the following technical solution: a road surface smoothness testing device, comprising a road surface smoothness testing instrument vehicle body and an assembly frame mounted on the road surface smoothness testing instrument vehicle body, wherein the lower end of the road surface smoothness testing instrument vehicle body is provided with equidistant wheels, a wheel frame is rotatably connected to the assembly frame, a measuring wheel is provided at one end of the wheel frame, a magnetic block is provided at the other end of the wheel frame, a sensor corresponding to the magnetic block is provided on the road surface smoothness testing instrument vehicle body, and a connector is fixedly installed on one side of the road surface smoothness testing instrument vehicle body;

[0007] The upper part of the road surface smoothness testing instrument vehicle body has symmetrically distributed fixing mechanisms;

[0008] The fixing mechanism includes two sets of first fixing seats equidistantly installed on the vehicle body of the road surface smoothness detector, and a second fixing seat corresponding to the first fixing seats. A lead screw is rotatably connected between one set of the first fixing seats and the second fixing seat, and a positioning rod is fixedly installed between the other set of the first fixing seats and the second fixing seat. A clamping plate is connected to the lead screw. At the same time, the lead screw and positioning rod structure realizes the adjustable clamping of the acquisition control box to adapt to equipment of different sizes.

[0009] Preferably, arm plates are symmetrically installed on the side of the clamping plate near the lead screw. The arm plate on the side away from the positioning rod is threaded onto the lead screw, and the arm plate on the side away from the lead screw is movably sleeved onto the positioning rod. By using the cooperation of the arm plates and the positioning rod, the clamping plate is prevented from tilting when moving, thus ensuring clamping accuracy.

[0010] Preferably, both the first and second fixing seats are fixedly connected to the upper end of the road surface smoothness detector vehicle body by bolts to ensure the installation rigidity of the fixing mechanism and avoid clamping failure due to loosening of the base. The bolts are M6 stainless steel bolts, with anti-loosening washers.

[0011] Preferably, the end of the lead screw away from the clamping plate is connected to a worm gear seat. The housing of the worm gear seat is fixedly connected to the side of the first fixed seat. The worm gear inside the worm gear seat is fixedly connected to the lead screw. A wheel is fixedly installed on the worm inside the worm gear seat, providing a labor-saving clamping force adjustment method. At the same time, the self-locking characteristic of the worm gear prevents the clamping plate from loosening due to vibration.

[0012] Preferably, a plurality of buffer protrusions are equidistantly installed on the side of the clamping plate away from the arm plate, and the arm plate and the clamping plate are detachably connected by bolts.

[0013] In this testing device, the operator places the control box between two clamping plates. The lead screw and positioning rod are connected to two sets of first and second fixed seats respectively. The clamping plates are mounted on the lead screw, and the lateral movement of the clamping plates is achieved by rotating the lead screw, thus clamping or releasing the acquisition control box between the two clamping plates. The surface of the positioning rod is hard chrome plated and cooperates with the linear bearing of the arm plate to ensure the smooth movement of the clamping plates. Finally, the two clamping plates move closer to each other and provide clamping and fixation for the acquisition control box. If the acquisition control box needs to be removed later, the lead screw can be manually rotated in the opposite direction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a highway pavement smoothness testing device.

[0015] Figure 2 This is a schematic diagram of the arm plate structure;

[0016] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle.

[0017] In the picture:

[0018] 1. Road surface smoothness testing instrument vehicle body; 2. Traveling wheels; 3. Assembly frame; 4. Measuring wheels; 5. Sensor; 6. Connector; 7. Fixing mechanism; 71. First fixed seat; 72. Second fixed seat; 73. Lead screw; 74. Worm gear seat; 75. Clamping plate; 751. Arm plate; 752. Buffer protrusion; 76. Positioning rod. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This embodiment provides a highway pavement smoothness detection device, such as... Figure 1-3 As shown, the testing device includes a road surface smoothness testing instrument vehicle body 1 and an assembly frame 3 mounted on the road surface smoothness testing instrument vehicle body 1. The lower end of the road surface smoothness testing instrument vehicle body 1 is provided with equal-distance running wheels 2. A wheel frame is rotatably connected to the assembly frame 3. A measuring wheel 4 is provided at one end of the wheel frame, and a magnetic block is provided at the other end of the wheel frame. A sensor 5 corresponding to the magnetic block is provided on the road surface smoothness testing instrument vehicle body 1. A connector 6 is fixedly installed on one side of the road surface smoothness testing instrument vehicle body 1.

[0021] The upper part of the road surface smoothness testing instrument vehicle body 1 is symmetrically equipped with fixing mechanisms 7;

[0022] The fixing mechanism 7 includes two sets of first fixing seats 71 equidistantly installed on the vehicle body 1 of the road surface smoothness tester, and a second fixing seat 72 corresponding to the first fixing seat 71. A lead screw 73 is rotatably connected between one set of first fixing seats 71 and the second fixing seat 72. A positioning rod 76 is fixedly installed between the other set of first fixing seats 71 and the second fixing seat 72. A clamping plate 75 is connected to the lead screw 73.

[0023] Specifically, the road surface smoothness detector vehicle body 1 moves via the walking wheels 2, the measuring wheel 4 on the mounting frame 3 contacts the road surface, and the magnetic block at the other end of the wheel frame moves with the undulations of the road surface. The sensor 5 collects road surface smoothness data through the change in the position of the magnetic block. In the fixing mechanism 7, the lead screw 73 and the positioning rod 76 are respectively connected to two sets of first fixing seats 71 and second fixing seats 72 for cooperation. The clamping plate 75 is installed on the lead screw 73. The clamping plate 75 is moved laterally by rotating the lead screw 73, so that the acquisition control box located between the two clamping plates 75 can be clamped or released. The surface of the positioning rod 76 is plated with hard chrome and cooperates with the linear bearing of the arm plate 751 to ensure that the clamping plate 75 moves smoothly. The connections between the measuring wheel 4, sensor 5, connector 6, magnetic block and acquisition control box are all technologies disclosed in the prior art.

[0024] Arm plates 751 are symmetrically installed on the side of the clamping plate 75 near the lead screw 73. The arm plate 751 on the side away from the positioning rod 76 is threadedly sleeved with the lead screw 73, and the arm plate 751 on the side away from the lead screw 73 is movably sleeved with the positioning rod 76.

[0025] More specifically, the clamping plate 75 is connected to the lead screw 73 and the positioning rod 76 via two side arm plates 751. One side arm plate 751 is threadedly engaged with the lead screw 73 to achieve driving, while the other side arm plate 751 is slidably engaged with the positioning rod 76 to achieve limiting and guiding. When the lead screw 73 is rotated, the thread drives one side arm plate 751 to move laterally, and the positioning rod 76 restricts the deflection of the clamping plate 75 to ensure uniform clamping force on both sides. The threaded engagement between the arm plate 751 and the lead screw 73 adopts a backlash-free structure to eliminate thread gaps and prevent the clamping plate 75 from loosening during vibration.

[0026] Both the first fixed seat 71 and the second fixed seat 72 are fixedly connected to the upper end of the road surface smoothness testing instrument vehicle body 1 by bolts.

[0027] Furthermore, the first fixed seat 71 and the second fixed seat 72 are rigidly connected to the upper end of the road surface smoothness tester vehicle body 1 by bolts, providing a stable installation reference for the lead screw 73 and the positioning rod 76, and bearing the clamping force of the clamping plate 75.

[0028] The end of the lead screw 73 away from the clamping plate 75 is connected to a worm gear seat 74. The housing of the worm gear seat 74 is fixedly connected to the side of the first fixed seat 71. The worm gear inside the worm gear seat 74 is fixedly connected to the lead screw 73. A wheel is fixedly installed on the worm inside the worm gear seat 74.

[0029] It should be noted that the worm inside the worm gear seat 74 is driven by the manual rotation of the wheel disk to rotate the worm gear, which in turn drives the lead screw 73 to rotate. The worm gear transmission has a self-locking function to prevent the lead screw 73 from reversing when vibrating, thus ensuring stable clamping force.

[0030] Several buffer protrusions 752 are equidistantly installed on the side of the clamping plate 75 away from the arm plate 751. The arm plate 751 and the clamping plate 75 are detachably connected by bolts.

[0031] It is worth mentioning that the buffer bump 752 is made of elastic silicone material. When clamping the control box, it absorbs vibration energy through compression deformation. The arm plate 751 and the clamping plate 75 are detachably connected, which makes it easy to replace the worn buffer bump 752 or adapt to control boxes of different thicknesses.

[0032] In use, the operator places the control box between two clamping plates 75. The lead screw 73 and the positioning rod 76 are respectively connected to two sets of first fixed seats 71 and second fixed seats 72. The clamping plates 75 are installed on the lead screw 73. The clamping plates 75 move laterally by rotating the lead screw 73, so that the acquisition control box between the two clamping plates 75 can be clamped or released. The surface of the positioning rod 76 is plated with hard chrome and cooperates with the linear bearing of the arm plate 751 to ensure that the clamping plates 75 move smoothly. Finally, the two clamping plates 75 move closer to each other and provide clamping and fixing for the acquisition control box. If the acquisition control box needs to be removed later, the lead screw 73 can be manually rotated in the reverse direction.

[0033] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A road surface smoothness testing device, comprising a road surface smoothness testing instrument vehicle body (1) and an assembly frame (3) mounted on the road surface smoothness testing instrument vehicle body (1), wherein the lower end of the road surface smoothness testing instrument vehicle body (1) is provided with equidistant running wheels (2), a wheel frame is rotatably connected to the assembly frame (3), a measuring wheel (4) is provided at one end of the wheel frame, a magnetic block is provided at the other end of the wheel frame, a sensor (5) corresponding to the magnetic block is provided on the road surface smoothness testing instrument vehicle body (1), and a connector (6) is fixedly installed on one side of the road surface smoothness testing instrument vehicle body (1); Its features are: The upper end of the vehicle body (1) of the road surface smoothness tester is symmetrically equipped with fixing mechanisms (7). The fixing mechanism (7) includes two sets of first fixing seats (71) equidistantly installed on the vehicle body (1) of the road surface smoothness tester and a second fixing seat (72) corresponding to the first fixing seat (71). A lead screw (73) is rotatably connected between one set of first fixing seats (71) and the second fixing seat (72). A positioning rod (76) is fixedly installed between the other set of first fixing seats (71) and the second fixing seat (72). A clamping plate (75) is connected to the lead screw (73).

2. The highway pavement smoothness testing device according to claim 1, characterized in that: The clamping plate (75) has an arm plate (751) symmetrically installed on the side of the screw (73) near the clamping rod (75). The arm plate (751) on the side away from the positioning rod (76) is threaded onto the screw (73), and the arm plate (751) on the side away from the screw (73) is movably sleeved onto the positioning rod (76).

3. The highway pavement smoothness testing device according to claim 2, characterized in that: Both the first fixing seat (71) and the second fixing seat (72) are fixedly connected to the upper end of the road surface smoothness tester vehicle body (1) by bolts.

4. The highway pavement smoothness testing device according to claim 3, characterized in that: The end of the lead screw (73) away from the clamping plate (75) is connected to a worm gear seat (74). The housing of the worm gear seat (74) is fixedly connected to the side of the first fixed seat (71). The worm wheel inside the worm gear seat (74) is fixedly connected to the lead screw (73). A wheel is fixedly installed on the worm inside the worm gear seat (74).

5. The highway pavement smoothness testing device according to claim 4, characterized in that: The clamping plate (75) has several buffer protrusions (752) installed at equal intervals on the side away from the arm plate (751). The arm plate (751) and the clamping plate (75) are detachably connected by bolts.

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