Multifunctional municipal road crack detection device

Abstract

The invention relates to the technical field of road detection, in particular to a multifunctional municipal road crack detection device which comprises a sweeping board, a detection mechanism is arranged at the top end of the sweeping board, the detection mechanism comprises a damping tube mounted above the sweeping board, a pressing rod slides in the damping tube, a probe is arranged at the bottom end of the pressing rod, and the probe is connected with the sweeping board. Dust and sundries around a crack are removed through a dust suction pump, the accuracy of measuring the depth of the crack through a probe is improved, an operator pulls a grip manually, the depth of the crack is accurately measured through scale marks on a damping pipe, data support is provided for repairing work, meanwhile, a pressing rod and damping liquid are used for pushing a push rod in a sleeve to move, and the repairing efficiency is improved. The position of the blocking plate is adjusted, the pigment flow is accurately controlled, the color depth is marked according to the crack depth, the severity of the crack is visually reflected, clamping of the clamping block and the clamping strip is controlled through air pressure change when the dust suction pump works, the probe is prevented from being damaged due to collision, the service life is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of road detection, and in particular to a multifunctional municipal road crack detection device. Background Art

[0002] Roads sometimes develop cracks due to long-term traffic loads and environmental factors. These cracks will affect the strength of the road surface. If they are not detected and repaired in time, they may cause road depressions in the future. In order to ensure traffic efficiency and driving safety, it is usually necessary to detect road cracks.

[0003] However, when measuring crack depth, existing detection tools are often unable to effectively remove interference such as dust and stones in the cracks, resulting in inaccurate contact between the probe and the bottom of the crack, which is prone to misjudgment and greatly reduces the accuracy of the detection results.

[0004] In view of this, research and improvement are carried out to the existing problems, and a multifunctional municipal road crack detection device is provided, aiming to solve the problem and improve the practical value through this technology. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and a multifunctional municipal road crack detection device is proposed. The present invention uses a vacuum pump to remove dust and debris around the crack, thereby improving the accuracy of the probe in measuring the crack depth. The operator manually pulls the handle to accurately measure the crack depth through the scale line on the damping tube, providing data support for the repair work. At the same time, the pressure rod and damping fluid are used to push the push rod inside the casing to move, adjust the position of the blocking plate, accurately control the pigment flow, mark the color depth according to the crack depth, and intuitively reflect the severity of the crack. When the vacuum pump is working, the air pressure change is used to control the engagement of the card block and the card strip to prevent the probe from being damaged by collision, extend the service life, and reduce maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multifunctional municipal road crack detection device, comprising a vehicle plate, a detection mechanism provided at the top of the vehicle plate, the detection mechanism comprising a damping tube mounted above the vehicle plate, a pressure rod sliding inside the damping tube, and a probe provided at the bottom end of the pressure rod; A dust suction mechanism is provided on one side of the probe, and the dust suction mechanism includes a collection box installed above the vehicle plate, one side of the collection box is connected to a dust suction pipe, one side of the collection box is installed with a dust suction pump, one side of the dust suction pump is installed with an exhaust pipe, and one end of the exhaust pipe is installed with a tee pipe; A marking mechanism is provided on the top of the vehicle plate, and the marking mechanism includes a paint box installed above the vehicle plate, the bottom end of the paint box is connected to a spray pipe, and a pneumatic component is provided between the paint box and the tee pipe; The outer wall of the nozzle is provided with an adjustment mechanism, which includes a flow valve installed on the outer wall of the nozzle, a throttling cylinder is provided in the inner cavity of the flow valve, a blocking plate is slidably provided inside the throttling cylinder, a threaded cylinder is installed on the top of the blocking plate, the inner thread of the threaded cylinder is connected to a rotating shaft, a gear is sleeved on the outer wall of the rotating shaft, and a pushing assembly is provided below the damping tube; A braking mechanism is provided on one side of the pressure rod, and the braking mechanism includes a guide sleeve installed on the top of the vehicle plate, a sliding rod slides inside the guide sleeve, a clamping block is installed at one end of the sliding rod, and a clamping strip that cooperates with the clamping block is provided on one side of the pressure rod, and an air supply pipe B is connected between the pneumatic component and the guide sleeve.

[0007] Preferably, the detection mechanism further comprises two sets of slide rails installed on the top of the vehicle plate, wherein sliders slide in both sets of slide rails, one side of the sliders is connected to a connecting plate, and the top end of the pressure rod is fixedly connected to the bottom end of the connecting plate.

[0008] Preferably: a guide rod is provided inside the slide rail, a spring A is sleeved on the outer wall of the guide rod, the top end of the spring A is fixedly connected to the bottom end of the slider, the bottom end of the spring A is fixedly connected to the inner wall of the slide rail, and a handle is welded to the side wall of the connecting plate.

[0009] Preferably, damping fluid is provided inside the damping tube, and scale lines are provided on the outer wall of the damping tube.

[0010] Preferably, the pneumatic assembly includes a cylinder connected to the top of the paint box, a circular plate slides inside the cylinder, a spring B is provided between the top of the circular plate and the inner wall of the cylinder, and an air supply pipe A is connected above the tee.

[0011] Preferably: the pushing assembly includes a sleeve installed at the bottom end of the vehicle plate, a push rod slides inside the sleeve, one end of the push rod passing through the sleeve is fixedly connected to a rack, the gear is meshed with the rack, and the damping tube is connected to the sleeve through a connecting pipe.

[0012] Preferably, a spring C is provided inside the sleeve, one end of the spring C is fixedly connected to one side of the push rod, and the other end of the spring C is fixedly connected to the inner wall of the sleeve.

[0013] Preferably, a spring D is provided inside the guide sleeve, one end of the spring D is fixedly connected to one side of the slide rod, and the other end of the spring D is fixedly connected to the inner wall of the guide sleeve.

[0014] Preferably, the outer wall of the throttle cylinder is provided with multiple groups of through holes.

[0015] Preferably, a dust suction head is installed at the bottom end of the dust suction pipe, and a material spraying head is installed at one end of the spray pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention starts the vacuum pump as the probe moves downward, generating negative pressure. The negative pressure is transmitted to the vacuum head through the vacuum tube, sucking the dust, debris, and pebbles around the crack into the vacuum tube and finally transporting them to a collection box for centralized storage. By removing interference, the probe can more accurately measure the depth of the crack, avoiding misjudgment due to dust accumulation, thereby improving the accuracy and reliability of the detection results.

[0017] 2. In the present invention, the operator manually holds the handle and pulls it downward. The handle drives the pressure rod to slide along the inside of the damping tube through the connecting plate. As the pressure rod moves downward, the probe at its bottom gradually penetrates into the crack. When the bottom end of the probe touches the bottom of the crack, the operator stops pulling the handle. At this time, by observing the scale line on the damping tube, the depth of the probe inserted into the crack can be read, thereby determining the actual depth of the crack. The depth of the crack can be accurately measured, providing accurate data support for subsequent road repair work, avoiding insufficient or excessive repair due to inaccurate crack depth estimation.

[0018] 3. The present invention compresses the damping fluid inside the damping tube into the inside of the sleeve through the pressure rod, and uses the pressure transmitted by the compression of the damping fluid to push the push rod inside the sleeve to move, so that the push rod synchronously drives the rack to move, so that the rack drives the gear to rotate, and the rotation of the gear drives the rotating shaft to rotate, so that the rotating shaft drives the threaded barrel to move upward along the inside of the throttle barrel, and can adjust the position of the baffle in the throttle barrel. The position change of the baffle will change the flow area inside the throttle barrel, thereby controlling the flow rate of the pigment sprayed from the nozzle, and then can accurately control the amount of pigment used according to the height of the crack, avoid pigment waste, and reduce the cost of use. At the same time, the deeper the crack, the more pigment is sprayed, and the darker the color of the mark is. Therefore, according to the color depth of the pigment mark, the depth of the crack is intuitively reflected, which is convenient for on-site personnel to quickly identify and record the severity of the crack. On-site maintenance personnel can quickly judge the depth and priority of the crack by the color of the mark, thereby reasonably arranging the maintenance sequence, and improving the pertinence and efficiency of the maintenance work.

[0019] 4. When the vacuum pump is working, the present invention transmits a part of the discharged gas to the inside of the guide sleeve through the exhaust pipe, so that the air pressure inside the guide sleeve increases. The increased air pressure pushes the slide rod inside the guide sleeve to move, so that the slide rod synchronously drives the block to move, thereby freeing the block from the restriction of the card strip. At this time, the probe can move down normally to perform crack detection. When there are large stones inside the crack that block the vacuum head, the vacuum tube no longer generates negative pressure. Since the vacuum tube no longer generates negative pressure, the air pressure inside the guide sleeve decreases. Under the action of the elastic potential energy of the spring D, the spring D drives the slide rod to move in the opposite direction. The reverse movement of the slide rod causes the block to re-engage with the card strip, limiting the probe from continuing to move downward, preventing the probe from continuing to move downward when encountering large stones, avoiding bending or damage of the probe due to collision, extending the service life of the probe, and reducing equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the bottom structure of the present invention; Figure 3 It is a structural schematic diagram of the detection mechanism of the present invention; Figure 4 It is a side structural schematic diagram of the present invention; Figure 5 It is a schematic structural diagram of the dust collection and marking mechanism of the present invention; Figure 6 It is a schematic structural diagram of the regulating mechanism of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part A; Figure 8 It is a schematic structural diagram of the braking mechanism of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of part B.

[0021] Legend: 1. Car plate; 2. Detection mechanism; 201. Slide rail; 202. Guide rod; 203. Slider; 204. Connecting plate; 205. Pressure rod; 206. Damping tube; 207. Probe; 208. Spring A; 209. Handle; 3. Dust collection mechanism; 301. Collection box; 302. Dust pump; 303. Dust collection tube; 304. Dust collection head; 4. Marking mechanism; 401. Paint box; 402. Nozzle; 403. Spray head; 404. Cylinder; 405. Circular plate; 406. Spring B; 407. Gas pipe A; 5. Adjusting mechanism; 501. Flow valve; 502. Throttle cylinder; 503. Blocking plate; 504. Threaded cylinder; 505. Rotating shaft; 506. Gear; 507. Sleeve; 508. Push rod; 509. Rack; 510. Spring C; 6. Braking mechanism; 601. Guide sleeve; 602. Slide rod; 603. Block; 604. Blocking strip; 605. Spring D; 606. Gas pipe B; 7. Exhaust pipe; 8. Tee. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See Figures 1 to 9 As shown, the present invention provides a multifunctional municipal road crack detection device, comprising a vehicle plate 1, a detection mechanism 2 is provided at the top of the vehicle plate 1, the detection mechanism 2 comprises a damping tube 206 mounted above the vehicle plate 1, a pressure rod 205 slides inside the damping tube 206, and a probe 207 is provided at the bottom end of the pressure rod 205; It should be noted that when in use, the device is moved to the location of the municipal road that needs to be inspected, and the probe 207 is aligned with the road crack. The operator manually holds the handle 209 and pulls it downward. The handle 209 drives the pressure rod 205 to slide along the inside of the damping tube 206 through the connecting plate 204. As the pressure rod 205 moves downward, the probe 207 at its bottom end gradually penetrates into the crack. When the bottom end of the probe 207 touches the bottom of the crack, stop pulling the handle 209. At this time, by observing the scale line on the damping tube 206, the depth of the probe 207 inserted into the crack can be read, thereby determining the actual depth of the crack. The depth of the crack can be accurately measured to provide accurate data support for subsequent road repair work, avoiding insufficient or excessive repair due to inaccurate crack depth estimation.

[0024] A dust collection mechanism 3 is provided on one side of the probe 207. The dust collection mechanism 3 includes a collection box 301 installed above the vehicle plate 1. A dust collection pipe 303 is connected to one side of the collection box 301. A dust collection pump 302 is installed on one side of the collection box 301. An exhaust pipe 7 is installed on one side of the dust collection pump 302. A three-way pipe 8 is installed at one end of the exhaust pipe 7. It should be noted that when the probe 207 moves downward, the vacuum pump 302 is started to generate negative pressure, which is transmitted to the vacuum head 304 through the vacuum tube 303, sucking the dust, debris and pebbles around the crack into the vacuum tube 303, and finally transporting them to the collection box 301 for centralized storage. By removing interference, the probe 207 can measure the depth of the crack more accurately, avoid misjudgment due to dust accumulation, and thus improve the accuracy and reliability of the detection results.

[0025] A marking mechanism 4 is provided at the top of the vehicle plate 1. The marking mechanism 4 includes a paint box 401 installed above the vehicle plate 1. The bottom end of the paint box 401 is connected to a nozzle 402. A pneumatic component is provided between the paint box 401 and the tee pipe 8. It should be noted that when the vacuum pump 302 is working, the vacuum pump 302 discharges the sucked gas through the exhaust pipe 7. At the same time, a part of the discharged gas enters the air supply pipe A407 through the three-way pipe 8 and is transported to the inside of the cylinder 404 through the air supply pipe A407, so that the pressure inside the cylinder 404 increases. The increased air pressure pushes the circular plate 405 inside the cylinder 404 to move downward, so that the circular plate 405 is used to push the paint from the paint box 401 through the nozzle 402 to the spray head 403, and finally the paint is sprayed on the crack surface through the spray head 403, and the crack position is immediately marked, so that subsequent maintenance personnel can quickly locate the crack position, improve work efficiency, and avoid repeated detection or omissions due to unclear crack position.

[0026] The outer wall of the nozzle 402 is provided with an adjustment mechanism 5, which includes a flow valve 501 mounted on the outer wall of the nozzle 402. The inner cavity of the flow valve 501 is provided with a throttle cylinder 502. A blocking plate 503 slides inside the throttle cylinder 502. A threaded cylinder 504 is mounted on the top of the blocking plate 503. The inner thread of the threaded cylinder 504 is connected to a rotating shaft 505. The outer wall of the rotating shaft 505 is sleeved with a gear 506. A pushing assembly is provided below the damping tube 206. It should be noted that, when the probe 207 moves downward, the damping fluid inside the damping tube 206 is compressed into the inside of the sleeve 507 through the pressure rod 205 via the connecting pipe, and the pressure transmitted by the compression of the damping fluid is used to push the push rod 508 inside the sleeve 507 to move, so that the push rod 508 synchronously drives the rack 509 to move. Due to the meshing relationship between the rack 509 and the gear 506, the rack 509 drives the gear 506 to rotate, and the upper end of the rotating shaft (505) is rotatably connected to the vehicle plate (1). The rotation of the gear 506 drives the rotating shaft 505 to rotate, and the threaded cylinder (504) and the flow valve (501) are slidably sealed, so that the rotating shaft 505 drives the threaded cylinder 504 to move upward along the inside of the throttling cylinder 502. The position of the plugging plate 503 in the throttle cylinder 502 can be adjusted. The change in the position of the plugging plate 503 will change the flow area inside the throttle cylinder 502, thereby controlling the flow rate of the pigment sprayed from the nozzle 402, and then being able to accurately control the amount of pigment used according to the height of the crack, thereby avoiding pigment waste and reducing the cost of use. At the same time, the deeper the crack, the more pigment is sprayed and the darker the color of the mark. Therefore, the depth of the crack is intuitively reflected according to the color depth of the pigment mark, which is convenient for on-site personnel to quickly identify and record the severity of the crack. On-site maintenance personnel can quickly judge the depth and priority of the crack by the color of the mark, thereby reasonably arranging the maintenance sequence and improving the pertinence and efficiency of the maintenance work.

[0027] A braking mechanism 6 is provided on one side of the pressure rod 205. The braking mechanism 6 includes a guide sleeve 601 installed on the top of the vehicle plate 1. A slide rod 602 slides inside the guide sleeve 601. A clamping block 603 is installed at one end of the slide rod 602. A clamping strip 604 that cooperates with the clamping block 603 is provided on one side of the pressure rod 205. An air supply pipe B606 is connected between the pneumatic component and the guide sleeve 601.

[0028] It should be noted that during normal detection, when the vacuum pump 302 is working, part of the gas discharged from the exhaust pipe 7 is transported to the inside of the guide sleeve 601 through the gas pipe B606, so that the air pressure inside the guide sleeve 601 increases. The increased air pressure pushes the slide bar 602 inside the guide sleeve 601 to move, so that the slide bar 602 synchronously drives the block 603 to move, thereby freeing the block 603 from the restriction of the card strip 604. At this time, the probe 207 can move down normally to perform crack detection. When there is a large stone inside the crack that blocks the vacuum head 304, the vacuum tube 303 no longer generates negative pressure. Since the vacuum tube 303 no longer generates negative pressure, the air pressure inside the guide sleeve 601 decreases. Under the action of the elastic potential energy of the spring D605, the spring D605 drives the slide bar 602 to move in the opposite direction. The reverse movement of the slide bar 602 causes the block 603 to re-engage with the card strip 604, limiting the probe 207 from continuing to move downward, preventing the probe 207 from continuing to move downward when encountering large rocks, avoiding the probe 207 from bending or damage due to collision, extending the service life of the probe 207, and reducing equipment maintenance costs.

[0029] See Figures 1 to 3 As shown, the detection mechanism 2 also includes two sets of slide rails 201 installed on the top of the vehicle plate 1, and sliders 203 slide in the two sets of slide rails 201. A connecting plate 204 is connected to one side of the slider 203. The top of the pressure rod 205 is fixedly connected to the bottom end of the connecting plate 204. The design of the slide rails 201 and the slider 203 provides a stable guide for the up and down movement of the pressure rod 205.

[0030] See Figures 1 to 3 As shown, a guide rod 202 is provided inside the slide rail 201, and a spring A208 is provided on the outer wall of the guide rod 202. The top end of the spring A208 is fixedly connected to the bottom end of the slider 203, and the bottom end of the spring A208 is fixedly connected to the inner wall of the slide rail 201. The elastic force of the spring A208 facilitates the automatic reset of the probe 207 after the detection is completed. A handle 209 is welded on the side wall of the connecting plate 204, and the operator can manually control the up and down movement of the pressure rod 205 through the handle 209.

[0031] See Figure 3 As shown, the interior of the damping tube 206 is provided with a damping fluid, and the outer wall of the damping tube 206 is provided with scale lines. When the operator pulls the handle 209 to move the pressure rod 205 downward, the viscosity of the damping fluid will hinder the rapid downward movement of the pressure rod 205, thereby slowing down its movement speed, avoiding the operator from using too much force to cause the probe 207 to move downward too quickly, reducing the impact force when the probe 207 collides with the hard object at the bottom of the crack, and protecting the probe 207 from damage. The scale lines can intuitively display the distance the pressure rod 205 moves downward, thereby accurately measuring the depth of the crack.

[0032] See Figure 5 As shown, the pneumatic component includes a cylinder 404 connected to the top of the paint box 401, a circular plate 405 slides inside the cylinder 404, a spring B406 is provided between the top of the circular plate 405 and the inner wall of the cylinder 404, and an air supply pipe A407 is connected to the top of the tee pipe 8.

[0033] See Figures 6 and 7 As shown, the pushing assembly includes a sleeve 507 installed at the bottom end of the vehicle plate 1, a push rod 508 slides inside the sleeve 507, one end of the push rod 508 passing through the sleeve 507 is fixedly connected to a rack 509, the gear 506 is meshed with the rack 509, and the damping tube 206 is connected to the sleeve 507 through a connecting pipe.

[0034] See Figure 6 As shown, a spring C510 is provided inside the sleeve 507 , one end of the spring C510 is fixedly connected to one side of the push rod 508 , and the other end of the spring C510 is fixedly connected to the inner wall of the sleeve 507 .

[0035] See Figure 9 As shown, a spring D605 is provided inside the guide sleeve 601 , one end of the spring D605 is fixedly connected to one side of the slide bar 602 , and the other end of the spring D605 is fixedly connected to the inner wall of the guide sleeve 601 .

[0036] See Figure 7 As shown, the outer wall of the throttle cylinder 502 is provided with multiple groups of through holes.

[0037] See Figure 5 As shown, a dust suction head 304 is installed at the bottom end of the dust suction pipe 303 , a dust suction pump 302 is installed on one side of the collection box 301 , and a spray head 403 is installed at one end of the spray pipe 402 .

[0038] Working principle: When in use, the device is moved to the location of the municipal road that needs to be inspected, and the probe 207 is aligned with the road crack. The operator manually holds the handle 209 and pulls it downward. The handle 209 drives the pressure rod 205 to slide along the inside of the damping tube 206 through the connecting plate 204. As the pressure rod 205 moves downward, the probe 207 at its bottom end gradually penetrates into the crack. When the bottom end of the probe 207 touches the bottom of the crack, the pulling of the handle 209 is stopped. At this time, by observing the scale line on the damping tube 206, the depth of the probe 207 inserted into the crack can be read, thereby determining the actual depth of the crack. The depth of the crack can be accurately measured, providing accurate data support for subsequent road repair work, avoiding insufficient or excessive repair due to inaccurate crack depth estimation; As the probe 207 moves downward, the vacuum pump 302 is activated, generating negative pressure. This negative pressure is transmitted to the vacuum head 304 through the vacuum pipe 303, sucking dust, debris, and pebbles around the crack into the vacuum pipe 303 and ultimately transporting them to the collection box 301 for centralized storage. By removing interfering objects, the probe 207 can more accurately measure the depth of the crack, avoiding misjudgments caused by dust accumulation, thereby improving the accuracy and reliability of the detection results. Furthermore, when the vacuum pump 302 is working, the vacuum pump 302 discharges the sucked gas through the exhaust pipe 7, and at the same time, a part of the discharged gas enters the inside of the gas pipe A407 through the tee pipe 8, and is transported to the inside of the cylinder 404 through the gas pipe A407, so that the pressure inside the cylinder 404 increases. The increased air pressure pushes the circular plate 405 inside the cylinder 404 to move downward, so that the circular plate 405 pushes the paint from the paint box 401 to the spray head 403 through the nozzle 402, and finally the paint is sprayed on the crack surface through the spray head 403, marking the crack position immediately, so that subsequent maintenance personnel can quickly locate the crack position, improve work efficiency, and avoid repeated detection or omission due to unclear crack position; In addition, when the probe 207 moves downward, the damping fluid inside the damping tube 206 is compressed into the inside of the sleeve 507 through the pressure rod 205 through the connecting pipe, and the pressure transmitted by the compression of the damping fluid is used to push the push rod 508 inside the sleeve 507 to move, so that the push rod 508 synchronously drives the rack 509 to move. Due to the meshing relationship between the rack 509 and the gear 506, the rack 509 drives the gear 506 to rotate, and the rotation of the gear 506 drives the rotating shaft 505 to rotate, so that the rotating shaft 505 drives the threaded barrel 504 to move upward along the inside of the throttle barrel 502, which can adjust the position of the blocking plate 503 in the throttle barrel 502. The change in the position of the plate 503 will change the flow area inside the throttle cylinder 502, thereby controlling the flow rate of the pigment sprayed from the nozzle 402. This can then accurately control the amount of pigment used according to the height of the crack, avoiding pigment waste and reducing the cost of use. At the same time, the deeper the crack, the more pigment is sprayed and the darker the color of the mark. The depth of the crack is intuitively reflected according to the color depth of the pigment mark, making it easier for on-site personnel to quickly identify and record the severity of the crack. On-site maintenance personnel can quickly judge the depth and priority of the crack by the color of the mark, thereby rationally arranging the maintenance sequence and improving the pertinence and efficiency of the maintenance work. During normal detection, when the vacuum pump 302 is working, part of the gas discharged from the exhaust pipe 7 is transported to the inside of the guide sleeve 601 through the air pipe B606, so that the air pressure inside the guide sleeve 601 increases. The increased air pressure pushes the slide bar 602 inside the guide sleeve 601 to move, so that the slide bar 602 synchronously drives the block 603 to move, thereby freeing the block 603 from the restriction of the card strip 604. At this time, the probe 207 can move down normally to perform crack detection. When there is a large stone inside the crack blocking the vacuum head 304, , the dust suction tube 303 no longer generates negative pressure. Since the dust suction tube 303 no longer generates negative pressure, the air pressure inside the guide sleeve 601 is reduced. Under the action of the elastic potential energy of the spring D605, the spring D605 drives the slide bar 602 to move in the opposite direction. The reverse movement of the slide bar 602 causes the block 603 to re-engage with the card strip 604, limiting the probe 207 from continuing to move downward, preventing the probe 207 from continuing to move downward when encountering large rocks, avoiding the probe 207 from bending or damage due to collision, extending the service life of the probe 207, and reducing equipment maintenance costs.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional municipal road crack detection device, comprising a vehicle plate (1), characterized in that: A detection mechanism (2) is provided at the top of the vehicle plate (1), the detection mechanism (2) comprising a damping tube (206) mounted above the vehicle plate (1), a pressure rod (205) sliding inside the damping tube (206), and a probe (207) provided at the bottom end of the pressure rod (205); A dust suction mechanism (3) is provided on one side of the probe (207), and the dust suction mechanism (3) includes a collection box (301) installed above the vehicle plate (1), one side of the collection box (301) is connected to a dust suction pipe (303), one side of the collection box (301) is installed with a dust suction pump (302), one side of the dust suction pump (302) is installed with an exhaust pipe (7), and one end of the exhaust pipe (7) is installed with a three-way pipe (8); The top of the vehicle plate (1) is provided with a marking mechanism (4), the marking mechanism (4) comprises a paint box (401) installed above the vehicle plate (1), the bottom end of the paint box (401) is connected to a nozzle (402), and a pneumatic component is provided between the paint box (401) and the three-way pipe (8); The outer wall of the nozzle (402) is provided with an adjusting mechanism (5), and the adjusting mechanism (5) includes a flow valve (501) installed on the outer wall of the nozzle (402), the inner cavity of the flow valve (501) is provided with a throttling cylinder (502), a blocking plate (503) is slidably provided inside the throttling cylinder (502), a threaded cylinder (504) is installed on the top of the blocking plate (503), the inner thread of the threaded cylinder (504) is connected to a rotating shaft (505), the outer wall of the rotating shaft (505) is sleeved with a gear (506), and a pushing assembly is provided below the damping tube (206); A brake mechanism (6) is provided on one side of the pressure rod (205), and the brake mechanism (6) includes a guide sleeve (601) mounted on the top end of the vehicle plate (1), a slide rod (602) sliding inside the guide sleeve (601), a clamping block (603) mounted on one end of the slide rod (602), a clamping strip (604) cooperating with the clamping block (603) is provided on one side of the pressure rod (205), and an air supply pipe B (606) is connected between the pneumatic assembly and the guide sleeve (601).

2. A multifunctional municipal road crack detection device according to claim 1, characterized in that: The detection mechanism (2) further comprises two sets of slide rails (201) mounted on the top of the vehicle plate (1), wherein a slider (203) slides in each of the two sets of slide rails (201), a connecting plate (204) is connected to one side of the slider (203), and the top end of the pressure rod (205) is fixedly connected to the bottom end of the connecting plate (204).

3. The multifunctional municipal road crack detection device according to claim 2, characterized in that: A guide rod (202) is provided inside the slide rail (201), and a spring A (208) is sleeved on the outer wall of the guide rod (202). The top end of the spring A (208) is fixedly connected to the bottom end of the slider (203), and the bottom end of the spring A (208) is fixedly connected to the inner wall of the slide rail (201). A handle (209) is welded to the side wall of the connecting plate (204).

4. The multifunctional municipal road crack detection device according to claim 1, characterized in that: The damping tube (206) is provided with damping liquid inside, and the outer wall of the damping tube (206) is provided with scale lines.

5. The multifunctional municipal road crack detection device according to claim 1, characterized in that: The pneumatic assembly includes a cylinder (404) connected to the top of the paint box (401), a circular plate (405) sliding inside the cylinder (404), a spring B (406) provided between the top of the circular plate (405) and the inner wall of the cylinder (404), and an air supply pipe A (407) connected to the top of the three-way pipe (8).

6. The multifunctional municipal road crack detection device according to claim 1, characterized in that: The pushing assembly comprises a sleeve (507) mounted at the bottom end of the vehicle plate (1); a push rod (508) is slidably disposed inside the sleeve (507); one end of the push rod (508) extending through the sleeve (507) is fixedly connected to a rack (509); the gear (506) is meshedly connected to the rack (509); and the damping tube (206) is connected to the sleeve (507) via a connecting tube.

7. The multifunctional municipal road crack detection device according to claim 6, characterized in that: A spring C (510) is provided inside the sleeve (507), one end of the spring C (510) is fixedly connected to one side of the push rod (508), and the other end of the spring C (510) is fixedly connected to the inner wall of the sleeve (507).

8. The multifunctional municipal road crack detection device according to claim 1, characterized in that: A spring D (605) is provided inside the guide sleeve (601), one end of the spring D (605) is fixedly connected to one side of the slide rod (602), and the other end of the spring D (605) is fixedly connected to the inner wall of the guide sleeve (601).

9. The multifunctional municipal road crack detection device according to claim 1, characterized in that: The outer wall of the throttling cylinder (502) is provided with multiple groups of through holes.

10. The multifunctional municipal road crack detection device according to claim 1, characterized in that: A dust suction head (304) is installed at the bottom end of the dust suction pipe (303), and a material spraying head (403) is installed at one end of the spray pipe (402).

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