Modularized measuring device for road construction

Abstract

The invention discloses a modular measuring device for road construction, which relates to the technical field of modular measuring equipment and comprises a detection vehicle, a mounting frame mounted on one side of the detection vehicle and a bearing plate mounted on one side of the mounting frame. The first sealing cylinder is fixedly installed on the bearing plate, and the dynamic balance component is installed on the first sealing cylinder and used for adjusting the ground clearance in a self-adaptive mode according to the jolting condition. When the roller jolts, hydraulic oil in the first sealing cylinder is squeezed into the second sealing cylinder through the control rod; the driving lifting rod drives the probe and the control rod to move by the same distance in the opposite directions, so that the downward moving distance of the measuring probe is equal to the upward moving distance of the radar probe when the detection vehicle bumps, and the radar probe can adaptively adjust the ground clearance when the detection vehicle bumps; compared with the prior art, the method has the advantages that the radar probe can be adaptively adjusted to an initial position during radar detection, and the accuracy of a measurement structure is improved.

Description

Technical Field

[0001] This invention relates to the field of modular measurement equipment technology, specifically a modular measurement device for road construction. Background Technology

[0002] Modular measuring devices for road construction are integrated with multiple measuring functions. They are mainly used to collect key data in road construction in real time, supporting rapid deployment and functional expansion. The modular measuring devices are mainly composed of radar systems, camera devices, etc. The modular measuring equipment is installed at the rear of the inspection vehicle. The inspection vehicle travels on the road to be measured, and the modular measuring equipment can measure the degree of potholes and bumps of the road through the radar system. The camera device can take pictures of the damaged parts. The data is analyzed by AI or processed by professional software to generate an inspection report and transmit the report to the computer set up inside the inspection vehicle. The staff inside the inspection vehicle can observe the road condition in real time.

[0003] Existing modular measuring devices for road construction collect data such as road smoothness and depression depth by moving the vehicle and scanning the road. The main principle is that when the radar system passes over a bump or depression in the road surface, the protruding end of the bump is brought closer to the radar system's probe, which increases the signal intensity reflected by the bump. The radar system can then analyze this signal intensity to determine the size, slope, and other data of the bump. Similarly, when passing over a depression, the radar system's probe moves away from the solid surface (i.e., the inner wall of the depression), and the signal reflected by the inner wall of the depression is weaker. Therefore, the radar system can analyze this signal to determine the depth, width, and other data of the depression.

[0004] The existing equipment is adapted to different vehicle models via a mounting bracket and supports customized functional modules. It is widely used in road construction, road maintenance, and environmental sanitation assessment, offering advantages such as higher measurement accuracy and efficiency. The device is fixedly mounted at the rear of the inspection vehicle via the mounting bracket, and the measuring device moves with the vehicle. Therefore, the measuring device is always synchronized with the vehicle's movement. However, when the vehicle's tires traverse bumpy roads, both the vehicle and the measuring device experience shared bumps. Specifically, when passing over higher protrusions, the measuring device moves upwards; when passing over deeper depressions, it moves downwards. The measuring device moves above the protrusion or depression and simultaneously performs radar detection on that area. Because the measuring device's height changes due to the vehicle's bumps, it is no longer at its original height when detecting higher protrusions or deeper depressions. The probe moves further away from or closer to the road surface than before, causing a deviation in the intensity of the reflected signal received by the radar system due to the change in probe height, thus reducing measurement accuracy.

[0005] In summary, existing technologies struggle to ensure that the radar probe in the measuring device maintains its original height when the inspection vehicle traverses bumpy roads. Therefore, this invention innovatively designs a modular measuring device for road construction. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a modular measuring device for road construction, thereby solving the problem mentioned in the background art where it is difficult to ensure that the radar probe in the measuring device remains at its original height when the inspection vehicle is traveling over bumpy roads.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular measuring device for road construction, comprising an inspection vehicle, a mounting frame installed on one side of the inspection vehicle, and a support plate installed on one side of the mounting frame, further comprising a first sealing cylinder fixedly installed on the support plate, a dynamic balancing component installed on the first sealing cylinder to adaptively adjust the ground clearance according to bump conditions, a roller installed at the bottom of the first sealing cylinder for driving the dynamic balancing component to adaptively adjust the ground clearance, and a drive rod distributed at equal angles on the roller for telescopically adjusting positive and negative pressure for pre-measurement dust suction and post-measurement dust discharge; The dynamic balancing component includes a lifting rod that adaptively adjusts the distance to maintain the original height according to the roller's vibration. One end of the lifting rod is equipped with a movable block for measuring the front dust suction and the rear dust discharge, and a sealing plate installed inside the movable block to adaptively adjust the positive and negative pressure.

[0008] Preferably, a connecting frame is slidably sleeved on the outer wall of the first sealing cylinder, and a support rod is rotatably connected to the inner wall of the connecting frame, the support rod being fixedly sleeved with the roller.

[0009] Preferably, the dynamic balancing component further includes a control rod slidably connected inside the first sealing cylinder, and an annular connecting block is fixedly installed at the bottom of the control rod, and the annular connecting block is installed on the outer wall of the support rod through a bearing; A first spring is fixedly installed at the bottom of the first sealing cylinder, and the bottom of the first spring is fixedly connected to the outer wall of the annular connecting block.

[0010] Preferably, a U-shaped frame is fixedly installed on the top of the first sealing cylinder, and a second sealing cylinder is fixedly connected to one end of the U-shaped frame, and the lifting rod is slidably installed inside the second sealing cylinder; Both the lifting rod and the control rod are fixedly equipped with sealing pistons at their tops, and the two sealing pistons are slidably installed inside the first sealing cylinder and the second sealing cylinder, respectively.

[0011] Preferably, two oil pipes are installed on the outer wall of the first sealing cylinder, and one end of the two oil pipes extends into the interior of the second sealing cylinder.

[0012] Preferably, the movable block has a measuring groove inside, and a radar probe is installed on the inner wall of the measuring groove.

[0013] Preferably, an air cylinder is fixedly installed at equal angles on the outer wall of the support rod, and a sealing plug is slidably installed on the inner wall of the air cylinder, with the drive rod fixedly connected to the sealing plug; One end of the drive rod passes through the air cylinder and extends to the outside of the drum; the drive rod is slidably connected to both the air cylinder and the drum. A second spring is fixedly installed on one side of the sealing plug, and one end of the second spring is fixedly connected to the inner wall of the air cylinder.

[0014] Preferably, an arc-shaped plate is fixedly connected to one end of the drive rod extending to the outside of the drum; The outer wall of the roller is provided with a groove, and the shape and size of the groove are the same as those of the arc plate.

[0015] Preferably, the connecting frame has a U-shaped channel inside, and the two ends of the support rod are sealed to the U-shaped channel through a rotary joint.

[0016] Preferably, the dust collection component further includes an air chamber opened inside the movable block, a one-way exhaust valve fixedly installed on the side wall of the air chamber, and a one-way intake valve fixedly installed at the bottom of the air chamber. The movable block has a dust collection channel inside, and the one-way intake valve is fixedly connected to the dust collection channel. A dust discharge pipe is fixedly installed on the outer wall of the movable block, and one end of the dust discharge pipe extends into the air chamber. The one-way exhaust valve is fixedly connected to the dust discharge pipe. A flexible air tube is installed on one side of the connecting frame, with one end of the flexible air tube extending into the interior of the U-shaped channel and the other end extending into the interior of the air chamber. The sealing plate is slidably installed inside the air chamber. A third spring is fixedly installed at one end of the sealing plate, and one end of the third spring is fixedly connected to the inner wall of the air chamber.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a control rod to force hydraulic oil from the first sealing cylinder into the second sealing cylinder during roller vibration. This causes the driving lifting rod to move the probe in the opposite direction of the control rod by the same distance. Therefore, the downward movement of the measuring probe is equal to the upward movement of the radar probe caused by the vibration of the detection vehicle. This allows the radar probe to adaptively adjust its ground clearance when subjected to vibration. Compared with existing technologies, this invention has the advantage of allowing the radar probe to adaptively adjust to its initial position during radar detection, thus improving the accuracy of the measurement structure.

[0018] In addition, a telescopic drive rod is installed on the roller to adjust the positive and negative pressure for dust suction before measurement and dust discharge after measurement. The positive and negative pressure is adjusted by the drive rod to drive the moving block to discharge dust after measurement. Compared with the existing technology, it has the effect of dust suction before the camera equipment shoots the road surface, avoiding the situation where the road surface condition cannot be observed due to dust covering it. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the dynamic balancing component of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the rear of the connecting frame and the roller of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the first sealing cylinder and the second sealing cylinder of the present invention.

[0023] Figure 5 This is a cross-sectional structural diagram of the first and second sealing cylinders of the present invention.

[0024] Figure 6 This is a schematic cross-sectional view of the roller structure of the present invention.

[0025] Figure 7 This is a cross-sectional structural diagram of the air cylinder of the present invention.

[0026] Figure 8 This is a front sectional view of the connecting frame in this invention.

[0027] Figure 9 This is a cross-sectional structural diagram of the movable block in this invention.

[0028] Figure 10 This is a schematic diagram of the structure of the present invention when the drive rod is not in contact with the ground.

[0029] Figure 11 This is a schematic diagram of the structure of the drive rod of the present invention when it is in contact with the ground.

[0030] In the diagram: 1. Inspection vehicle; 2. Mounting frame; 3. Bearing plate; 4. First sealing cylinder; 41. Control rod; 42. First spring; 43. Second sealing cylinder; 44. Lifting rod; 5. Connecting frame; 6. Support rod; 7. Roller; 8. Air cylinder; 81. Sealing plug; 82. Drive rod; 83. Second spring; 9. Moving block; 91. One-way air inlet valve; 92. One-way air outlet valve; 93. Sealing plate; 94. Third spring; 10. Radar probe. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 11 The present invention provides a technical solution: a modular measuring device for road construction, including a testing vehicle 1, a mounting frame 2 installed on one side of the testing vehicle 1 and a bearing plate 3 installed on one side of the mounting frame 2, and further including a first sealing cylinder 4 fixedly installed on the bearing plate 3, a dynamic balancing component installed on the first sealing cylinder 4 to adaptively adjust the distance from the ground according to the bumps, a roller 7 installed at the bottom of the first sealing cylinder 4 for driving the dynamic balancing component to adaptively adjust the distance from the ground, and a drive rod 82 equally distributed on the roller 7 for telescopically adjusting positive and negative pressure to perform dust suction before measurement and dust discharge after measurement; The dynamic balancing components include a lifting rod 44 that adaptively adjusts the distance to maintain the original height based on the vibration of the roller 7; One end of the lifting rod 44 is equipped with a movable block 9 for measuring the pre-dust suction and the post-dust discharge, and a sealing plate 93 installed inside the movable block 9 to adaptively adjust the positive and negative pressure.

[0033] In this embodiment, the mounting bracket 2 can be adapted to be installed at the rear of different vehicle models, improving the applicability of the device. The moving block 9 is equipped with a camera device, which will drive the moving block 9 to move synchronously when the inspection vehicle 1 is driving on the road. The camera device can take pictures of the road surface it passes through and transmit them to the computer inside the inspection vehicle 1 through the existing dedicated system. The staff inside the inspection vehicle 1 can view the surface condition of the road in real time.

[0034] The outer wall of the first sealing cylinder 4 is slidably sleeved with a connecting frame 5, and the inner wall of the connecting frame 5 is rotatably connected with a support rod 6, which is fixedly sleeved with the roller 7.

[0035] In this embodiment, the connecting frame 5 is an inverted "U" shaped structure. The connecting frame 5 can support and connect the roller 7. The support rod 6 can rotate inside the connecting frame 5. The bottom of the roller 7 is located on the road surface and will roll on the road when driven by the detection vehicle 1.

[0036] The dynamic balancing component also includes a control rod 41 that is slidably connected inside the first sealed cylinder 4. An annular connecting block is fixedly installed at the bottom of the control rod 41, and the annular connecting block is installed on the outer wall of the support rod 6 through a bearing. A first spring 42 is fixedly installed at the bottom of the first sealing cylinder 4, and the bottom of the first spring 42 is fixedly connected to the outer wall of the annular connecting block.

[0037] In this embodiment, the first spring 42 is in a compressed state. When the roller 7 passes through the protruding part, it will drive the support rod 6 to move upward a certain distance, which will further compress the first spring 42. When the roller 7 is on a flat road after passing through the protruding part, the elastic force of the first spring 42 will drive the control rod 41 to return to its original position. When the roller 7 passes through a deeper recessed part, the roller 7 will move downward a certain distance. At this time, the elastic force of the first spring 42 will press down the support rod 6, and the support rod 6 will drive the control rod 41 to move downward a certain distance.

[0038] A U-shaped frame is fixedly installed on the top of the first sealing cylinder 4, and a second sealing cylinder 43 is fixedly connected to one end of the U-shaped frame. The lifting rod 44 is slidably installed inside the second sealing cylinder 43. Both the lifting rod 44 and the control rod 41 are fixedly installed with sealing pistons, and the two sealing pistons are slidably installed inside the first sealing cylinder 4 and the second sealing cylinder 43, respectively.

[0039] In this embodiment, the U-shaped frame can support and fix the second sealing cylinder 43.

[0040] Two oil pipes are installed on the outer wall of the first sealing cylinder 4, and one end of the two oil pipes extends into the interior of the second sealing cylinder 43.

[0041] In this embodiment, both the first sealing cylinder 4 and the second sealing cylinder 43 are filled with hydraulic oil. Through the connection of two oil pipes, the hydraulic oil inside the first sealing cylinder 4 and the second sealing cylinder 43 is in a balanced state.

[0042] The moving block 9 has a measuring slot inside, and a radar probe 10 is installed on the inner wall of the measuring slot.

[0043] In this embodiment, the radar probe 10 is an existing device and will not be explained in detail here. When the moving block 9 passes through the road, the radar probe 10 will perform radar detection on the road and generate relevant data through AI analysis or professional software processing, which will be transmitted to the computer inside the detection vehicle 1 so that the staff can know the road conditions in real time.

[0044] An air cylinder 8 is fixedly installed at equal angles on the outer wall of the support rod 6, and a sealing plug 81 is slidably installed on the inner wall of the air cylinder 8. The drive rod 82 is fixedly connected to the sealing plug 81. One end of the drive rod 82 passes through the air cylinder 8 and extends to the outside of the drum 7. The drive rod 82 is slidably connected to both the air cylinder 8 and the drum 7. A second spring 83 is fixedly installed on one side of the sealing plug 81, and one end of the second spring 83 is fixedly connected to the inner wall of the air cylinder 8.

[0045] In this embodiment, when the roller 7 rotates, the drive rod 82 in contact with the ground will move into the air cylinder 8 due to resistance. After the drive rod 82 is separated from the ground, it will be reset by the second spring 83.

[0046] An arc-shaped plate is fixedly connected to one end of the drive rod 82 that extends to the outside of the roller 7; The outer wall of the roller 7 has a groove, and the shape and size of the groove are the same as those of the arc plate.

[0047] In this embodiment, when the drive rod 82 passes over the ground, the arc plate can increase the force-bearing area at the end of the drive rod 82, providing protection for the drive rod 82. The arc plate will move into the inside of the groove, so that the roller 7 will not bounce or vibrate due to the arc plate when it rolls on the road.

[0048] The connecting frame 5 has a U-shaped channel inside, and the two ends of the support rod 6 are sealed to the U-shaped channel through a rotary joint.

[0049] In this embodiment, when the drive rod 82 contacts the ground, it will be resisted and drive the sealing plug 81 to move into the air cylinder 8. The inside of the support rod 6 is hollow. Since the U-shaped channel, soft air tube and air chamber inside the air cylinder 8, support rod 6, connecting frame 5 and moving block 9 are all connected, the air cylinder 8 will deliver gas into the air chamber through the action of air pressure.

[0050] The dust collection component also includes an air chamber opened inside the movable block 9, a one-way exhaust valve 92 fixedly installed on the side wall of the air chamber, and a one-way intake valve 91 fixedly installed at the bottom of the air chamber. A dust collection channel is opened inside the movable block 9, and the one-way intake valve 91 is fixedly connected to the dust collection channel. A dust discharge pipe is fixedly installed on the outer wall of the movable block 9, and one end of the dust discharge pipe extends into the interior of the air chamber. The one-way exhaust valve 92 is fixedly connected to the dust discharge pipe. A flexible air tube is installed on one side of the connecting frame 5, with one end of the flexible air tube extending into the interior of the U-shaped channel and the other end of the flexible air tube extending into the interior of the air chamber. The sealing plate 93 is slidably installed inside the air chamber. A third spring 94 is fixedly installed at one end of the sealing plate 93, and one end of the third spring 94 is fixedly connected to the inner wall of the air chamber.

[0051] In this embodiment, by setting a one-way air intake valve 91 and a one-way air outlet valve 92, the air chamber can only be drawn in through the dust suction channel and can only be exhausted through the dust exhaust pipe. The dust suction channel is set in front of the radar probe 10 and the dust exhaust pipe is set behind the radar probe 10, so that the dust suction channel can be used to suction dust before measurement and the dust exhaust pipe can be used to exhaust dust after measurement.

[0052] Working principle: When using this modular measuring device for road construction, the inspection vehicle 1 travels on the road, and the roller 7 rolls on the road driven by the inspection vehicle 1. When the inspection vehicle 1 passes over a relatively raised part of the road surface, the roller 7 and the moving block 9 move upward a certain distance due to the bumps. After the inspection vehicle 1 passes over the raised part, the roller 7 will fall on the raised part. The roller 7 will move upward due to the obstruction of the raised part. At this time, the roller 7 will drive the control rod 41 and the connecting frame 5 to move upward as a whole and compress the first spring 42. The control rod 41 squeezes upward inside the first sealing cylinder 4 through the sealing piston. Hydraulic oil is pumped into the first sealing cylinder 4, and the hydraulic oil inside the first sealing cylinder 4 is squeezed into the second sealing cylinder 43. Since both the first sealing cylinder 4 and the second sealing cylinder 43 are filled with hydraulic oil, when the hydraulic oil inside the first sealing cylinder 4 is squeezed into the second sealing cylinder 43, it will squeeze the sealing piston inside the second sealing cylinder 43 and make it move downward. Meanwhile, the hydraulic oil in the lower part of the second sealing cylinder 43 enters the lower part of the first sealing cylinder 4, thereby achieving a balance of hydraulic oil between the first sealing cylinder 4 and the second sealing cylinder 43. The lifting rod 44 moves downward with the sealing piston and drives the moving block 9 to move downward. Since the hydraulic oil capacity entering the second sealing cylinder 43 from the upper part of the first sealing cylinder 4 is the same as the hydraulic oil capacity entering the first sealing cylinder 4 from the lower part of the second sealing cylinder 43, it means that the two sealing pistons move the same distance, and the downward movement distance of the radar probe 10 is equal to the upward movement distance of the roller 7. Therefore, the downward movement distance of the radar probe 10 is equal to the upward movement distance of the radar probe 10 when the detection vehicle 1 bumps, so that the radar probe 10 has moved to the initial position when performing radar detection on the protruding part. Similarly, when the roller 7 passes through a deeper recessed area, the roller 7 will move downward a certain distance. Since the first spring 42 is in a compressed state, the elastic force of the first spring 42 will press down on the support rod 6, and the support rod 6 will drive the control rod 41 to move downward a certain distance. Therefore, the control rod 41 will squeeze the hydraulic oil downward through the top sealing piston, causing the lifting rod 44 to move upward, so that the moving block 9 will move upward by the same distance, so that the radar probe 10 has moved to the initial position when performing radar detection on the recessed area.

[0053] When the roller 7 rotates, the drive rod 82 in contact with the ground is resisted and drives the sealing plug 81 to move into the air cylinder 8. The sealing plug 81 compresses the gas inside the air cylinder 8. Since the U-shaped channel, soft air tube and moving block 9 inside the air cylinder 8, support rod 6, connecting frame 5 are all connected, the air cylinder 8 will deliver the gas into the air chamber through the action of air pressure. The air pressure inside the air chamber will drive the sealing plate 93 to move towards the one-way air valve 92. This process will discharge the gas in the air chamber located on the side of the sealing plate 93 near the one-way air valve 92 through the one-way air valve 92. After the drive rod 82, which is in contact with the ground, is separated from the ground, the second spring 83 will drive the sealing plug 81 to reset. At this time, the inside of the air cylinder 8 is in a positive pressure state. Through the same principle, the sealing plate 93 moves to its original position. At this time, the space on the side of the sealing plate 93 near the one-way air outlet valve 92 in the air chamber is in a negative pressure state. The one-way air inlet valve 91 will take in air through the dust suction channel, so that the dust suction channel has an adsorption force on the bottom. The dust located below the dust suction channel will be sucked into the air chamber through the dust suction channel. Since the radar probe 10 is located on the rear side of the dust suction channel, the moving block 9 can perform dust suction before measurement. When the drive rod 82 contacts the ground due to the rotation of the roller 7, the gas in the air chamber located on the side of the sealing plate 93 near the one-way exhaust valve 92 will be discharged through the one-way exhaust valve 92. Therefore, the dust absorbed by the air chamber can be discharged through the one-way exhaust valve 92. The outlet of the exhaust pipe is located on the rear side of the radar probe 10, so that the moving block 9 can discharge the dust after measurement.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular measuring device for road construction, comprising an inspection vehicle (1), a mounting frame (2) installed on one side of the inspection vehicle (1), and a support plate (3) installed on one side of the mounting frame (2), characterized in that: It also includes a first sealing cylinder (4) fixedly installed on the support plate (3), a dynamic balancing component installed on the first sealing cylinder (4) to adaptively adjust the distance from the ground according to the bumpy conditions, a roller (7) installed at the bottom of the first sealing cylinder (4) to drive the dynamic balancing component to adaptively adjust the distance from the ground, and a drive rod (82) distributed at equal angles on the roller (7) to telescopically adjust the positive and negative pressure for dust suction before measurement and dust discharge after measurement. The dynamic balancing component includes a lifting rod (44) that adaptively adjusts the distance to maintain the original height according to the bumping of the roller (7). One end of the lifting rod (44) is equipped with a movable block (9) for measuring the front dust suction and the rear dust discharge, and a sealing plate (93) installed inside the movable block (9) to adaptively adjust the positive and negative pressure.

2. The modular measuring device for road construction according to claim 1, characterized in that: The outer wall of the first sealing cylinder (4) is slidably sleeved with a connecting frame (5), and the inner wall of the connecting frame (5) is rotatably connected with a support rod (6), which is fixedly sleeved with the roller (7).

3. A modular measuring device for road construction according to claim 2, characterized in that: The dynamic balancing component also includes a control rod (41) that is slidably connected inside the first sealing cylinder (4). An annular connecting block is fixedly installed at the bottom of the control rod (41), and the annular connecting block is installed on the outer wall of the support rod (6) through a bearing. A first spring (42) is fixedly installed at the bottom of the first sealing cylinder (4), and the bottom of the first spring (42) is fixedly connected to the outer wall of the annular connecting block.

4. A modular measuring device for road construction according to claim 3, characterized in that: A U-shaped frame is fixedly installed on the top of the first sealing cylinder (4), and a second sealing cylinder (43) is fixedly connected to one end of the U-shaped frame. The lifting rod (44) is slidably installed inside the second sealing cylinder (43). The top of the lifting rod (44) and the control rod (41) are both fixedly installed with sealing pistons, and the two sealing pistons are slidably installed inside the first sealing cylinder (4) and the second sealing cylinder (43) respectively.

5. A modular measuring device for road construction according to claim 4, characterized in that: Two oil pipes are installed on the outer wall of the first sealing cylinder (4), and one end of the two oil pipes extends into the interior of the second sealing cylinder (43).

6. A modular measuring device for road construction according to claim 1, characterized in that: The moving block (9) has a measuring slot inside, and a radar probe (10) is installed on the inner wall of the measuring slot.

7. A modular measuring device for road construction according to claim 5, characterized in that: An air cylinder (8) is fixedly installed at equal angles on the outer wall of the support rod (6), and a sealing plug (81) is slidably installed on the inner wall of the air cylinder (8). The sealing plug (81) is fixedly connected to the drive rod (82). One end of the drive rod (82) passes through the air cylinder (8) and extends to the outside of the drum (7). The drive rod (82) is slidably connected to both the air cylinder (8) and the drum (7). A second spring (83) is fixedly installed on one side of the sealing plug (81), and one end of the second spring (83) is fixedly connected to the inner wall of the air cylinder (8).

8. A modular measuring device for road construction according to claim 7, characterized in that: An arc-shaped plate is fixedly connected to one end of the drive rod (82) extending to the outside of the drum (7); The outer wall of the roller (7) is provided with a groove, and the shape and size of the groove are the same as the shape and size of the arc plate.

9. A modular measuring device for road construction according to claim 2, characterized in that: The connecting frame (5) has a U-shaped channel inside, and the two ends of the support rod (6) are sealed to the U-shaped channel through a rotary joint.

10. A modular measuring device for road construction according to claim 2, characterized in that: The dust collection component also includes an air chamber opened inside the movable block (9), a one-way exhaust valve (92) fixedly installed on the side wall of the air chamber, and a one-way intake valve (91) fixedly installed at the bottom of the air chamber. The movable block (9) has a dust collection channel inside, and the one-way intake valve (91) is fixedly connected to the dust collection channel. The outer wall of the movable block (9) is fixedly installed with a dust discharge pipe, and one end of the dust discharge pipe extends into the air chamber. The one-way exhaust valve (92) is fixedly connected to the dust discharge pipe. A flexible air tube is installed on one side of the connecting frame (5), and one end of the flexible air tube extends into the interior of the U-shaped channel, while the other end of the flexible air tube extends into the interior of the air chamber. The sealing plate (93) is slidably installed inside the air chamber. A third spring (94) is fixedly installed at one end of the sealing plate (93), and one end of the third spring (94) is fixedly connected to the inner wall of the air chamber.

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