A road crack repairing device for traffic engineering

Abstract

The present invention discloses a road crack repair device for traffic engineering, and relates to the technical field of traffic engineering. The present invention comprises a carrier, a universal wheel is fixedly installed at the bottom of the carrier, a bracket is fixedly connected to the bottom of the carrier, a rotating shaft is connected to the bottom of the carrier through the rotation of the bracket, both ends of the rotating shaft are fixedly connected to load-bearing wheels, and a connecting frame, an asphalt barrel and a rear handrail are fixedly connected to the top of the carrier. The present invention uses the setting of a mobile spraying mechanism so that when the carrier is pushed forward, the load-bearing wheel contacts the ground and rotates counterclockwise, and the counterclockwise rotation of the load-bearing wheel drives the rotating shaft to rotate counterclockwise. At this time, the asphalt in the asphalt barrel is sucked into the pressure chamber by the cooperation of the rotating gear, the gear rod, the piston rod and other components, and then the asphalt is sprayed to the ground below the carrier for repair by the spraying pipe, and when the carrier stops moving, the asphalt will also stop spraying immediately, so as to prevent the asphalt from continuing to spray and accumulating at the stop point to cause waste.

Description

Technical Field

[0001] The invention relates to the technical field of traffic engineering, in particular to a road crack repairing device for traffic engineering. Background Art

[0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed into mineral materials. The asphalt binder improves the ability of paving aggregate to resist damage to the road surface caused by driving and natural factors, making the road surface smooth, dust-free, waterproof and durable. However, as the road surface is used for a longer time, cracks, irregular potholes, etc. will appear on the asphalt pavement. If it is not repaired in time, the damaged area will expand rapidly and affect the safe passage of vehicles.

[0003] The patent document with publication number CN216193896U discloses a highway crack repairing device for traffic engineering, including a base, a heating plate, a raw material barrel and a support plate are arranged on the base, an agitator, a discharge pipe and a discharge head are arranged on the raw material barrel, a telescopic column, a fixing frame and an extrusion plate are arranged on the support plate, a through hole is arranged on the extrusion plate, a limit groove and a hole groove are arranged in the through hole, a hole cover is arranged in the hole groove, a ring and a limit block are arranged on the hole cover, a warning column is arranged on the limit block, the discharge head is clamped and matched with the through hole, and a pulley seat is arranged on the lower surface of the base. In the above application document, the material is poured through the through hole to repair the crack by opening the material pump. When the repairing device stops moving, the material pump needs to be closed in time, otherwise it may cause the material to accumulate at the stop position and cause waste. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a road crack repairing device for traffic engineering, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a highway crack repair device for traffic engineering, comprising a carrier, a universal wheel is fixedly installed at the bottom of the carrier, a bracket is fixedly connected to the bottom of the carrier, a rotating shaft is connected to the bottom of the carrier through the rotation of the bracket, both ends of the rotating shaft are fixedly connected to load-bearing wheels, a connecting frame, an asphalt barrel and a rear handrail are fixedly connected to the top of the carrier, a front handrail is fixedly connected to the inner side of one end of the connecting frame, a flattening roller is rotatably connected to the inner side of the other end of the connecting frame, a feed pipe is passed through and fixedly connected to the top of the asphalt barrel, a motor is arranged on the top of the asphalt barrel, and the motor is driven by its output The output shaft is fixedly connected with a stirring shaft, and the stirring shaft penetrates and is rotatably connected to the asphalt barrel. A movable spraying mechanism is arranged on the top of the carrier, and a rotating cleaning mechanism is arranged on the bottom of the carrier. The movable spraying mechanism comprises a rotating gear and a pressure chamber, and the rotating gear is fixedly connected to the surface of the rotating shaft, and the pressure chamber penetrates and is fixedly connected to the top of the carrier. A return spring is arranged inside the pressure chamber, and a piston rod is slidably connected to the inside of the pressure chamber through a return spring piston, and a gear rod is fixedly connected to the bottom of the piston rod, and a suction pipe and a spraying pipe are respectively penetrated and fixedly connected on both sides of the pressure chamber, and both the suction pipe and the spraying pipe are provided with a one-way valve.

[0006] According to the above technical solution, the bottom of the universal wheel, the bottom of the load-bearing wheel and the bottom of the flattening roller are on the same horizontal plane. The universal wheel is used for steering the carrier, the load-bearing wheel is used for main load-bearing, and the flattening roller can flatten the sprayed asphalt.

[0007] According to the above technical solution, the rotating gear is an incomplete gear, and the teeth on the gear rod are matched with the teeth on the rotating gear. When the rotating gear rotates and meshes with the gear rod, it drives the gear rod to move upward.

[0008] According to the above technical solution, the one-way valve in the suction pipe is unidirectionally conductive toward the inside of the pressure chamber, and the one-way valve in the ejection pipe is unidirectionally conductive toward the outside of the pressure chamber. When negative pressure is formed in the pressure chamber, the asphalt in the asphalt barrel will be sucked into the pressure chamber through the suction pipe, and when the asphalt in the pressure chamber is squeezed, it will be ejected through the ejection pipe.

[0009] According to the above technical solution, the end of the ejection pipe away from the pressure chamber is located at the bottom of the carrier, and the end of the ejection pipe away from the pressure chamber is located in front of the flattening roller. Asphalt is sprayed through the ejection pipe to the ground under the carrier for repair, and then the flattening roller passes by to flatten it.

[0010] According to the above technical solution, the rotating cleaning mechanism includes a bevel gear A, a cross bar and a rotating rod, the bevel gear A is fixedly connected to the bottom of the stirring shaft, the cross bar passes through and is fixedly connected to the asphalt barrel, the two ends of the cross bar are respectively fixedly connected with a bevel gear B and a bevel gear C, the rotating rod passes through and is rotatably connected to the carrier, the top of the rotating rod is fixedly connected with a bevel gear D, the bottom of the rotating rod is fixedly connected with a cleaning brush, and the top of the cleaning brush is provided with an auxiliary cleaning component and an intermittent resistance mechanism.

[0011] According to the above technical solution, the auxiliary cleaning component includes a trough body, and two spring telescopic rods are fixedly connected to the inside of the trough body, the rear ends of the two spring telescopic rods are fixedly connected to moving blocks, and the bottoms of the two moving blocks are fixedly connected to brush heads, and the two brush heads are penetrated and slidably connected to the cleaning brush.

[0012] According to the above technical solution, the bevel gear C has only half of the teeth, the connection between the rotating rod and the cleaning brush is located at the top of the cleaning brush near the edge, and the trough body is A-shaped as a whole. When the cross bar rotates, the bevel gear C with half of the teeth cooperates with the bevel gear D to intermittently drive the rotating rod to rotate. When the rotating rod rotates, it drives the cleaning brush to rotate eccentrically to clean the ground.

[0013] According to the above technical solution, the intermittent resistance mechanism includes an air pressure chamber, which is penetrated by and fixedly connected to the cleaning brush. An internal piston at one end of the air pressure chamber is slidably connected to a push rod, and a resistance disk is fixedly connected to the bottom of the push rod. A protruding block is provided at the bottom of the resistance disk, and air bags are provided at the other two ends of the air pressure chamber.

[0014] According to the above technical solution, the airbag is in an expanded state in the initial state, and the resistance plate is located below the cleaning brush. When the moving block moves along the groove body, it will squeeze the airbag. The squeezed airbag and the air pressure inside it will enter the air pressure chamber to push the push rod to move downward, and the resistance plate will move downward and come into contact with the ground.

[0015] The present invention provides a road crack repair device for traffic engineering, which has the following beneficial effects:

[0016] (1) The present invention adopts the arrangement of a mobile spraying mechanism so that when the carrier is pushed forward, the load-bearing wheel contacts the ground and rotates counterclockwise. The counterclockwise rotation of the load-bearing wheel drives the rotating shaft to rotate counterclockwise. At this time, the asphalt in the asphalt barrel is sucked into the pressure chamber by the cooperation of the rotating gear, the gear rod, the piston rod and other components, and then the asphalt is sprayed to the ground below the carrier through the spraying pipe for repair. When the carrier stops moving, the asphalt will also stop spraying, thereby preventing the asphalt from continuing to be sprayed and accumulating at the stop point to cause waste.

[0017] (2) The present invention sets a rotating cleaning mechanism so that when the motor is turned on to drive the stirring shaft to rotate and stir the asphalt in the asphalt barrel, it will also drive the bevel gear A to rotate. The rotation of the bevel gear A cooperates with the bevel gear B to drive the cross bar to rotate. The rotation of the cross bar will intermittently drive the rotating rod to rotate through the cooperation of the bevel gear C and the bevel gear D. When the rotating rod rotates, it will drive the cleaning brush to rotate eccentrically to better clean the ground. The auxiliary cleaning component performs auxiliary cleaning and can also increase the cleaning range, effectively preventing the situation where there is too much dust on the ground that affects the asphalt repair effect.

[0018] (3) The present invention sets an intermittent resistance mechanism so that when the rotating rod intermittently rotates and drives the cleaning brush to rotate eccentrically to clean the floor, the moving block and the brush head are repeatedly thrown out to the outside of the cleaning brush due to centrifugal force and repeatedly squeeze the airbag. The air pressure inside the airbag is squeezed and enters the air pressure chamber to push the push rod to move downward. The downward movement of the push rod drives the resistance plate to move downward and contact the ground. The intermittent downward movement of the resistance plate and its contact with the ground increase the friction with the ground, preventing the push carrier from moving faster and faster and becoming difficult to stop due to inertia, thereby effectively improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional front view of the overall structure of the present invention;

[0020] Figure 2 It is a three-dimensional side view of the overall structure of the present invention;

[0021] Figure 3 A three-dimensional cross-sectional view of the overall structure of the present invention;

[0022] Figure 4 A three-dimensional schematic diagram of the structure of the mobile ejection mechanism of the present invention;

[0023] Figure 5 A three-dimensional cross-sectional view of the structure of the mobile ejection mechanism of the present invention;

[0024] Figure 6 A three-dimensional schematic diagram of the overall structure of the rotary cleaning mechanism of the present invention;

[0025] Figure 7 A three-dimensional schematic diagram of a partial structure of the rotary cleaning mechanism of the present invention;

[0026] Figure 8 A three-dimensional schematic diagram of the auxiliary cleaning component structure of the present invention;

[0027] Fig. 9 It is a three-dimensional schematic diagram of the intermittent resistance mechanism structure of the present invention.

[0028] In the figure: 1. carrier; 2. universal wheel; 3. bracket; 4. rotating shaft; 5. load-bearing wheel; 6. connecting frame; 7. front support rod; 8. flattening roller; 9. asphalt barrel; 10. feeding pipe; 11. motor; 12. stirring shaft; 13. rear handrail; 15. mobile spraying mechanism; 151. rotating gear; 152. pressure chamber; 153. reset spring; 154. piston rod; 155. gear rod; 156. suction pipe; 157. spraying pipe; 16. rotating cleaning Mechanism; 161, bevel gear A; 162, cross bar; 163, bevel gear C; 164, rotating rod; 165, bevel gear D; 166, cleaning brush; 167, auxiliary cleaning component; 1671, trough body; 1672, spring telescopic rod; 1673, moving block; 1674, brush head; 168, bevel gear B; 17, intermittent resistance mechanism; 171, air pressure chamber; 172, air bag; 173, push rod; 174, resistance plate; 175, raised block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figure 1-Figure 5One embodiment of the present invention is: a road crack repair device for traffic engineering, comprising a carrier 1, a universal wheel 2 is fixedly installed at the bottom of the carrier 1, a bracket 3 is fixedly connected to the bottom of the carrier 1, a rotating shaft 4 is connected to the bottom of the carrier 1 through the rotation of the bracket 3, both ends of the rotating shaft 4 are fixedly connected to load-bearing wheels 5, a connecting frame 6, an asphalt barrel 9 and a rear handrail 13 are fixedly connected to the top of the carrier 1, a front support rod 7 is fixedly connected to the inner side of one end of the connecting frame 6, and a flattening roller 8 is rotatably connected to the inner side of the other end of the connecting frame 6, the bottom of the wheel body of the universal wheel 2 is on the same horizontal plane as the bottom of the load-bearing wheel 5 and the bottom of the flattening roller 8, and the universal wheel 2 is fixedly connected to the bottom of the load-bearing wheel 5 and the bottom of the flattening roller 8. The carrier 1 is used for steering, the load-bearing wheel 5 is used for main load-bearing, the flattening roller 8 can flatten the sprayed asphalt, the top of the asphalt barrel 9 is penetrated and fixedly connected with a feed pipe 10, the top of the asphalt barrel 9 is provided with a motor 11, the motor 11 is fixedly connected with a stirring shaft 12 through its output shaft, the stirring shaft 12 is penetrated and rotatably connected with the asphalt barrel 9, the top of the carrier 1 is provided with a mobile spraying mechanism 15, and the bottom of the carrier 1 is provided with a rotating cleaning mechanism 16; the mobile spraying mechanism 15 includes a rotating gear 151 and a pressure chamber 152, the rotating gear 151 is fixedly connected to the surface of the rotating shaft 4, the pressure chamber 152 is penetrated and fixedly connected to the carrier 1 At the top, a return spring 153 is arranged inside the pressure chamber 152, and a piston rod 154 is slidably connected to the pressure chamber 152 through the return spring 153 piston, and a gear rod 155 is fixedly connected to the bottom of the piston rod 154, and the rotating gear 151 is an incomplete gear, and the teeth on the gear rod 155 are adapted to the teeth on the rotating gear 151, and when the rotating gear 151 rotates and meshes with the gear rod 155, the gear rod 155 will be driven to move upward, and the two sides of the pressure chamber 152 are respectively penetrated and fixedly connected with a suction pipe 156 and a spray pipe 157, and the end of the spray pipe 157 away from the pressure chamber 152 is located at the bottom of the carrier 1, and the spray pipe 157 is fixedly connected to the pressure chamber 152. The end of 57 away from the pressure bin 152 is located in front of the flattening roller 8. The asphalt is sprayed through the spray pipe 157 to the ground below the carrier 1 for repair, and then the flattening roller 8 passes through to flatten it. Both the suction pipe 156 and the spray pipe 157 are provided with a one-way valve. The one-way valve in the suction pipe 156 is one-way conductive toward the inside of the pressure bin 152, and the one-way valve in the spray pipe 157 is one-way conductive toward the outside of the pressure bin 152. When negative pressure is formed in the pressure bin 152, the asphalt in the asphalt barrel 9 is sucked into the pressure bin 152 through the suction pipe 156, and when the asphalt in the pressure bin 152 is squeezed, it will be sprayed out through the spray pipe 157.

[0031] When in use, after moving the device to the target ground, asphalt is added into the asphalt barrel 9 through the feed pipe 10, the motor 11 is turned on to drive the stirring shaft 12 to rotate and stir the asphalt in the asphalt barrel 9, and the carrier 1 is pushed forward by the rear handrail 13. The universal wheel 2 can be used for steering. When the carrier 1 moves forward, the load-bearing wheel 5 contacts the ground and rotates counterclockwise. The counterclockwise rotation of the load-bearing wheel 5 drives the rotating shaft 4 to rotate counterclockwise. The counterclockwise rotation of the rotating shaft 4 drives the rotating gear 151 to rotate counterclockwise. When the rotating gear 151 rotates counterclockwise and meshes with the gear rod 155, it drives the gear rod 155 to move downward. The downward movement of the gear rod 155 drives the piston rod 154 to move downward, and the reset spring 153 is stretched. The downward movement of the piston rod 154 will form a negative pressure in the pressure chamber 152. When negative pressure is formed in the pressure chamber 152, the asphalt in the asphalt barrel 9 will be sucked into the pressure chamber 152 through the suction pipe 156. When the rotating gear 151 rotates to the point where the toothless part is out of mesh with the gear rod 155, the return spring 153 rebounds and drives the piston rod 154 and the gear rod 155 to move upward and restore. At this time, the piston rod 154 will squeeze the asphalt in the pressure chamber 152 and spray it out through the spray pipe 157. The asphalt is sprayed through the spray pipe 157 to the ground under the carrier 1 for repair. Then the flattening roller 8 passes by to flatten the ground, thereby completing the repair work on the ground. When the carrier 1 stops moving, the spray pipe 157 will also stop spraying asphalt immediately to prevent the asphalt from continuing to spray and accumulate at the stop point. It is simple to use and does not cause waste of asphalt.

[0032] See also Figure 1-Figure 9On the basis of the above embodiment, in another embodiment of the present invention, the rotating cleaning mechanism 16 includes a bevel gear A161, a cross bar 162 and a rotating rod 164. The bevel gear A161 is fixedly connected to the bottom of the stirring shaft 12. The cross bar 162 penetrates and is fixedly connected to the asphalt barrel 9. The two ends of the cross bar 162 are respectively fixedly connected with a bevel gear B168 and a bevel gear C163. The rotating rod 164 penetrates and is rotatably connected to the carrier 1. The top of the rotating rod 164 is fixedly connected with a bevel gear D165. The bottom of the rotating rod 164 is fixedly connected with a cleaning brush 166. There are only half teeth on the bevel gear C163. The connection between the rotating rod 164 and the cleaning brush 166 is located at the top of the cleaning brush 166 near the edge. The groove body 1671 is A-shaped as a whole. When the cross bar 162 rotates, the half-toothed bevel gear C163 cooperates with the bevel gear D165 to intermittently drive the rotating rod 164 to rotate. The rotating rod 164 rotates When cleaning the floor, the cleaning brush 166 is driven to rotate eccentrically to clean the floor. An auxiliary cleaning assembly 167 and an intermittent resistance mechanism 17 are provided on the top of the cleaning brush 166. The auxiliary cleaning assembly 167 includes a groove body 1671. Two spring telescopic rods 1672 are fixedly connected inside the groove body 1671. The rear ends of the two spring telescopic rods 1672 are fixedly connected with moving blocks 1673. The bottoms of the two moving blocks 1673 are fixedly connected with brush heads 1674. The two brush heads 1674 penetrate and are slidably connected to the cleaning brush 166. The intermittent resistance mechanism 17 includes an air pressure chamber 171. The air pressure chamber 171 penetrates and is fixedly connected to the cleaning brush 166. A push rod 173 is slidably connected to the internal piston at one end of the air pressure chamber 171. A resistance disk 174 is fixedly connected to the bottom of the push rod 173. A protruding block 175 is provided at the bottom of the resistance disk 174. Air bags 172 are provided at the other two ends of the air pressure chamber 171. The airbag 172 is in an expanded state in the initial state, and the resistance disk 174 is located below the cleaning brush 166. When the moving block 1673 moves along the groove body 1671, it will squeeze the airbag 172. The squeezed airbag 172 and the air pressure inside it will enter the air pressure chamber 171 to push the push rod 173 to move downward, and the resistance disk 174 will move downward and come into contact with the ground.

[0033] When in use, the motor 11 is turned on to drive the stirring shaft 12 to rotate and stir the asphalt barrel 9. The rotation of the stirring shaft 12 will also drive the bevel gear A161 to rotate. The rotation of the bevel gear A161 will drive the cross bar 162 to rotate through the bevel gear B168 that is vertically meshed with it. When the cross bar 162 rotates, it will intermittently drive the rotating rod 164 to rotate through the bevel gear C163 with half of the teeth and the bevel gear D165. When the rotating rod 164 rotates, it will drive the cleaning brush 166 to rotate eccentrically to clean the ground. The centrifugal force generated when the rotating rod 164 rotates to drive the cleaning brush 166 to rotate eccentrically will cause the two brush heads 1674 to be thrown out to the outside of the cleaning brush 166 for auxiliary cleaning, and at the same time will also expand the cleaning range. When the cleaning brush 166 stops rotating, the spring telescopic rod 1672 drives the moving block 1673 and the brush head 1674 to retract and restore, and the two brush heads 1674 are thrown out to the cleaning brush 1 During the process of retraction and restoration driven by the outer side of 66 and the subsequent spring telescopic rod 1672, the two moving blocks 1673 will repeatedly squeeze the two air bags 172 respectively. The two air bags 172 are squeezed and the air pressure inside them will enter the air pressure chamber 171 to push the push rod 173 to move downward. The downward movement of the push rod 173 will drive the resistance plate 174 to move downward. The resistance plate 174 moves downward and will contact the ground. At this time, the resistance plate 174 and the bottom raised block 175 will increase the friction with the ground. When the two moving blocks 1673 leave the two air bags 172, the two air bags 172 rebound, and the air pressure returns to the two air bags 172. At this time, the push rod 173 drives the resistance plate 174 to move upward and leave the ground. The intermittent downward movement of the resistance plate 174 and the contact with the ground increase the friction with the ground, thereby preventing the carrier 1 from moving faster and faster and becoming difficult to stop due to inertia, thereby effectively improving safety.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A road crack repair device for traffic engineering, comprising a carrier (1), characterized in that: A universal wheel (2) is fixedly mounted on the bottom of the carrier (1), a bracket (3) is fixedly connected to the bottom of the carrier (1), a rotating shaft (4) is rotatably connected to the bracket (3), and both ends of the rotating shaft (4) are fixedly connected to load-bearing wheels (5). A connecting frame (6), an asphalt barrel (9) and a rear handrail (13) are fixedly connected to the top of the carrier (1), a front handrail (7) is fixedly connected to the inner side of one end of the connecting frame (6), and a flattening roller (8) is rotatably connected to the inner side of the other end of the connecting frame (6). A feed pipe (10) passes through and is fixedly connected to the top of the asphalt barrel (9). A motor (11) is provided on the top of the asphalt barrel (9), and the motor (11) is fixedly connected to a stirring shaft (12) via its output shaft. The stirring shaft (12) passes through and is rotatably connected to the asphalt barrel (9). A movable ejection mechanism (15) is provided on the top of the carrier (1), and a rotating cleaning mechanism (16) is provided on the bottom of the carrier (1); The movable ejection mechanism (15) comprises a rotating gear (151) and a pressure chamber (152), wherein the rotating gear (151) is fixedly connected to the surface of the rotating shaft (4), the pressure chamber (152) penetrates and is fixedly connected to the top of the carrier (1), a return spring (153) is arranged inside the pressure chamber (152), a piston rod (154) is slidably connected to the inside of the pressure chamber (152) through the return spring (153), a gear rod (155) is fixedly connected to the bottom of the piston rod (154), and a suction pipe (156) and an ejection pipe (157) are respectively penetrated and fixedly connected on both sides of the pressure chamber (152), and a one-way valve is arranged inside each of the suction pipe (156) and the ejection pipe (157); The rotating cleaning mechanism (16) comprises a bevel gear A (161), a cross bar (162) and a rotating rod (164); the bevel gear A (161) is fixedly connected to the bottom of the stirring shaft (12); the cross bar (162) penetrates and is fixedly connected to the asphalt barrel (9); two ends of the cross bar (162) are respectively fixedly connected to a bevel gear B (168) and a bevel gear C (163); the rotating rod (164) penetrates and is rotatably connected to the carrier (1); the top of the rotating rod (164) is fixedly connected to a bevel gear D (165); the bottom of the rotating rod (164) is fixedly connected to a cleaning brush (166); the top of the cleaning brush (166) is provided with an auxiliary cleaning component (167) and an intermittent resistance mechanism (17); The auxiliary cleaning component (167) comprises a trough body (1671), the interior of the trough body (1671) is fixedly connected with two spring telescopic rods (1672), the rear ends of the two spring telescopic rods (1672) are fixedly connected with a moving block (1673), the bottoms of the two moving blocks (1673) are fixedly connected with a brush head (1674), and the two brush heads (1674) are penetrated and slidably connected with the cleaning brush (166); The intermittent resistance mechanism (17) comprises an air pressure chamber (171), the air pressure chamber (171) and the cleaning brush (166) penetrate and are fixedly connected, a push rod (173) is slidably connected to an internal piston at one end of the air pressure chamber (171), a resistance plate (174) is fixedly connected to the bottom of the push rod (173), a protrusion (175) is provided at the bottom of the resistance plate (174), and air bags (172) are provided at the other two ends of the air pressure chamber (171); The airbag (172) is in an expanded state in an initial state, and the resistance disk (174) is located below the cleaning brush (166); When the moving block (1673) moves along the groove body (1671), it will squeeze the airbag (172). When the airbag (172) is squeezed, the air pressure inside it will enter the air pressure chamber (171) to push the push rod (173) to move downward, and the resistance plate (174) will move downward and contact the ground.

2. A road crack repairing device for traffic engineering according to claim 1, characterized in that: The bottom of the wheel body of the universal wheel (2) is on the same horizontal plane as the bottom of the load-bearing wheel (5) and the bottom of the flattening roller (8).

3. A road crack repairing device for traffic engineering according to claim 2, characterized in that: The rotating gear (151) is an incomplete gear, and the teeth on the gear rod (155) are matched with the teeth on the rotating gear (151).

4. A road crack repairing device for traffic engineering according to claim 3, characterized in that: The one-way valve in the suction pipe (156) is one-way conductive toward the inside of the pressure chamber (152), and the one-way valve in the discharge pipe (157) is one-way conductive toward the outside of the pressure chamber (152).

5. A road crack repairing device for traffic engineering according to claim 4, characterized in that: One end of the ejection pipe (157) away from the pressure chamber (152) is located at the bottom of the carrier (1), and one end of the ejection pipe (157) away from the pressure chamber (152) is located in front of the flattening roller (8).

6. A road crack repairing device for traffic engineering according to claim 5, characterized in that: The connection between the rotating rod (164) and the cleaning brush (166) is located at the top of the cleaning brush (166) close to the edge, and the groove body (1671) is generally A-shaped.

Images