A road engineering construction damage repairing device

Abstract

The application relates to the technical field of road repair, in particular to a road engineering construction damage repair device, which comprises a vehicle body and a base, the vehicle body is provided with a lifting unit for driving the base to lift, the bottom of the base is provided with a material injection cavity, the material injection cavity is provided with a crushing unit capable of lifting relative to the base and a cooling unit capable of abutting against a road surface, the cooling unit has two forms of folding and separation and is used for controlling the opening and closing of a cavity opening of the material injection cavity; the vehicle body is provided with a grouting unit, the grouting unit is provided with a grouting pipe penetrating through the cooling unit, and an opening of one end of the grouting pipe away from the grouting unit is located at the bottom of the cooling unit; when the cooling unit is folded, the opening of the one end of the grouting pipe away from the grouting unit is located directly below the material injection cavity. The application can improve the repair efficiency of the road.

Description

Technical Field

[0001] This application relates to the technical field of road repair, and in particular to a road construction damage repair device. Background Technology

[0002] Municipal roads, due to long-term heavy operation and natural factors, are likely to be damaged before their scheduled maintenance period. Potholes caused by road damage will affect pedestrian travel and vehicle traffic. Therefore, workers need to carry out emergency repairs as soon as the road surface is damaged.

[0003] A search revealed Chinese Patent Publication No. CN208235286U, which discloses a rapid road surface repair machine. The machine includes a vehicle body, a fixed frame, and a vibration module. A roller is installed at the lower rear of the vehicle body, and a support frame is installed at the middle upper part of the vehicle body, with a mixing tank connected to the support frame. This invention features a reasonable structural design and high practicality. During operation, a hydraulic rod drives a rotating seat to move down to the damaged road surface via a transmission shaft. A first motor drives the rotating seat to rotate via the transmission shaft. A hard brush effectively cleans impurities from the damaged area, preventing them from affecting road surface repair. A waste collection box collects impurities, preventing environmental pollution and beautifying the cityscape. The crushing blades and reinforcing plates ensure the quality of asphalt or cement, preventing caking and solidification that could affect road repair quality. A feeding pipe allows for uniform and rapid material feeding. A vibration motor drives a vibrating plate to strengthen the bond between the asphalt or cement and the damaged road surface, effectively enhancing the quality of road surface repair. The roller effectively compacts the road surface.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: During road repair, workers need to push the vehicle multiple times to move the rotating seat, feeding disc, vibrating plate, and rolling roller sequentially to the pothole and align them with it. The multiple pushing and position adjustments of the vehicle take a considerable amount of time, resulting in low road repair efficiency. Therefore, improvements are needed. Summary of the Invention

[0005] In order to improve the efficiency of road repair, this application provides a road construction damage repair device.

[0006] This application provides a road construction damage repair device, which adopts the following technical solution: A road construction damage repair device includes a vehicle body and a base. The vehicle body is provided with a lifting unit for driving the base to rise and fall. The bottom of the base is provided with an injection chamber. The injection chamber is provided with a crushing unit that can rise and fall relative to the base and a cooling unit that can contact the road surface. The cooling unit has two forms: closing and opening and is used to control the opening and closing of the injection chamber.

[0007] The vehicle body is equipped with a grouting unit, and the grouting unit is equipped with a grouting pipe that passes through the cooling unit. The opening of the grouting pipe at the end away from the grouting unit is located at the bottom of the cooling unit. When the cooling unit is closed, the opening of the grouting pipe at the end away from the grouting unit is directly below the injection chamber.

[0008] Optionally, the lifting unit includes an electric cylinder mounted on the vehicle body. The piston rod of the electric cylinder extends vertically and is provided with a mounting seat. The mounting seat is connected to the base via a vertically arranged first elastic telescopic rod.

[0009] The crushing unit includes a first motor mounted on a mounting base. The output shaft of the first motor rotates through the base and is equipped with crushing blades. The crushing blades are rotated and embedded in the feeding chamber, which is cylindrical.

[0010] Optionally, it also includes a power supply unit, which includes a battery mounted on the vehicle body, a power supply block mounted on the mounting base, and a conductive block mounted on the base. The power supply block is connected to the battery via wires, and the conductive block is connected to the first motor via wires.

[0011] When the crushing blade extends to the outside of the injection chamber, the power supply block will continuously contact the conductive block; when the crushing blade sinks into the inside of the injection chamber, the power supply block will detach from the conductive block.

[0012] Optionally, it also includes a vacuuming unit, which includes a vacuum cleaner mounted on the vehicle body, a vacuum cleaner with a suction pipe connected to the injection chamber, and a conductive block connected to the vacuum cleaner via a wire.

[0013] Optionally, the grouting unit includes a material bucket and a pump mounted on the vehicle body, with the inlet end of the pump connected to the material bucket and the outlet end of the pump connected to the grouting pipe.

[0014] A second motor is installed on the material barrel, and the output shaft of the second motor rotates through the material barrel and is equipped with a stirring paddle that extends into the material barrel.

[0015] Optionally, the vehicle body is equipped with a processor, and the injection chamber is equipped with a contact sensor. The contact sensor, the pump, and the second motor are all coupled to the processor. The output shaft of the first motor is equipped with a pressure block that can abut against the contact sensor.

[0016] When the crushing blade extends to the outside of the feeding chamber, the briquette will detach from the contact sensor. The contact sensor will send a stirring signal to the processor, and the processor will control the second motor to start.

[0017] When the crushing blade sinks into the inside of the injection chamber, the crushing block will come into contact with the contact sensor. The contact sensor will send an injection signal to the processor, which will then control the second motor to shut down and control the pump to start for a specified duration.

[0018] Optionally, the bottom of the base is provided with a receiving cavity connected to the injection chamber, and the cooling unit includes several heat-conducting plates that can only slide horizontally within the receiving cavity. The lower surface of the heat-conducting plates is flush with the lower surface of the base, and the total area of ​​the lower surface of the heat-conducting plates after they are closed is greater than the area of ​​the cavity opening of the injection chamber.

[0019] Optionally, the mounting base is provided with a plurality of vertically arranged second elastic telescopic rods that correspond one-to-one with the heat-conducting plate. The end of the second elastic telescopic rod away from the mounting base is rotatably connected to the heat-conducting plate with the same rotating rod that flips in the vertical plane. The heat-conducting plate is connected to the base by a spring.

[0020] As the crushing blade descends and approaches the heat-conducting plate, the second elastic telescopic rod will drive the heat-conducting plate to move away from the injection chamber through the rotating rod, causing the spring to deform.

[0021] When the crushing blade extends to the outside of the injection chamber, the heat-conducting plate will abut against the cavity wall of the receiving cavity and remain stationary, and the second elastic telescopic rod will be compressed.

[0022] When the crushing blades that have sunk into the injection chamber rise away from the heat-conducting plate, the spring will return to its natural state and cause the heat-conducting plate to close.

[0023] In summary, this application includes the following beneficial technical effects:

[0024] 1. By extending and retracting the piston rod of the electric cylinder, the crushing blade can be lowered to crush the road surface in the pit, and the base can be pressed against the road surface to stabilize the vehicle body and block the debris and dust generated when the road surface is crushed, which facilitates road repair.

[0025] 2. The slurry in the crushing chamber can exchange heat directly with the road surface, or it can exchange heat with the road surface through the heat conduction plate, so that the slurry in the crushing chamber can cool and solidify quickly.

[0026] 3. The slurry can be mixed in advance during the road surface crushing process, and the slurry can be quantitatively injected into the crushing chamber after the road surface crushing is completed, so as to improve the road repair efficiency and repair effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0028] Figure 2 This is a schematic cross-sectional view of the overall structure in the embodiments of this application;

[0029] Figure 3 This is a cross-sectional view of the lifting unit and the base in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the structure of the lower surface of the base in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the upper surface of the base in an embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the cooling unit and the crushing unit in the embodiments of this application;

[0033] Figure 7 This is a cross-sectional structural diagram of the lifting unit and cooling unit in the embodiments of this application.

[0034] Reference numerals: 1. Vehicle body; 11. Processor; 2. Base; 21. Injection chamber; 22. Receiving chamber; 23. Crushing chamber; 24. Contact sensor; 3. Lifting unit; 31. Electric cylinder; 32. Mounting seat; 33. First elastic telescopic rod; 34. Second elastic telescopic rod; 35. Rotating rod; 4. Crushing unit; 41. First motor; 42. Crushing blade; 43. Press block; 5. Dust collection unit; 51. Dust collector; 52. Dust collection pipe; 6. Grouting unit; 61. Material bucket; 62. Pump; 63. Second motor; 64. Agitator; 65. Grouting pipe; 7. Cooling unit; 71. Heat-conducting plate; 72. Spring; 8. Power supply unit; 81. Battery; 82. Power supply block; 83. Conductive block; 84. Connecting rod; 85. Protective shell. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0036] This application discloses a road construction damage repair device. For example... Figure 1 and Figure 2 As shown, a road construction damage repair device includes a vehicle body 1, a base 2, a lifting unit 3, a crushing unit 4, a dust suction unit 5, a grouting unit 6, and a cooling unit 7. The bottom of the base 2 is provided with a material injection chamber 21.

[0037] During the repair of road potholes, workers push vehicle 1 to the pothole, positioning the injection chamber 21 directly above it. Lifting unit 3 then lowers base 2, connecting injection chamber 21 to the pothole. Crushing unit 4 crushes the road surface at the pothole, dust collection unit 5 collects debris and dust generated during crushing, grouting unit 6 injects grout into the crushed area, and cooling unit 7 rapidly cools and solidifies the grout. Lifting unit 3 then raises base 2, allowing the repair of the next pothole to proceed. Therefore, this repair method eliminates the need for repeated pushing and repositioning of vehicle 1, and enables the completion of crushing, dust collection, grouting, and cooling operations in a single operation, thereby improving road repair efficiency.

[0038] The lifting unit 3 includes an electric cylinder 31 mounted on the upper surface of the vehicle body 1. The piston rod of the electric cylinder 31 extends vertically and is mounted on a mounting base 32. The lower surface of the mounting base 32 is connected to the upper surface of the base 2 by a plurality of vertically arranged first elastic telescopic rods 33.

[0039] The crushing unit 4 includes a first motor 41 installed on the lower surface of the mounting base 32. The output shaft of the first motor 41 is rotatably inserted through the base 2 and multiple crushing blades 42 are installed thereon. The crushing blades 42 are rotatably embedded in the feeding chamber 21, which is cylindrical.

[0040] During the repair of road potholes, the electric cylinder 31 will drive the mounting base 32 to descend. The mounting base 32 will drive the base 2 to descend and contact the road surface through the first elastic telescopic rod 33. Then the first elastic telescopic rod 33 will be gradually compressed, and the base 2 will remain stationary and pressed against the road surface. The crushing blade 42 will gradually extend out of the injection chamber 21. The first motor 41 will drive the crushing blade 42 to rotate and crush the road surface. The crushing chamber 23 generated by the crushing blade 42 will correspond to the injection chamber 21 to facilitate the subsequent injection of slurry. The base 2 pressed against the road surface will keep the vehicle body 1 stable and prevent the debris and dust generated during the crushing of the road surface from splashing out of the injection chamber 21.

[0041] It is worth noting that by extending and retracting the piston rod of the electric cylinder 31, the breaking blade 42 can be lowered to break the road surface in the pit, and the base 2 can be pressed against the road surface to stabilize the vehicle body 1 and block the debris and dust generated when the road surface is broken, thus facilitating road repair.

[0042] The vacuum unit 5 includes a vacuum cleaner 51 mounted on the upper surface of the vehicle body 1. A vacuum cleaner 52 is installed on the vacuum cleaner 51. The vacuum cleaner 52 passes through the vehicle body 1 and is connected to the filling chamber 21. Therefore, the debris and dust blocked in the filling chamber 21 by the base 2 will enter the vacuum cleaner 51 through the vacuum cleaner 52.

[0043] like Figure 2 and Figure 3 As shown, a power supply unit 8 is provided on the vehicle body 1. The power supply unit 8 includes a battery 81 installed on the upper surface of the vehicle body 1, a power supply block 82 installed at the bottom of the mounting base 32, and a conductive block 83 connected to the top of the base 2 via a connecting rod 84. The power supply block 82 is connected to the battery 81 via a wire, and the conductive block 83 is connected to the first motor 41 and the vacuum cleaner 51 via a wire.

[0044] During the road surface crushing process, the crushing blade 42 will gradually extend downward to the outside of the injection chamber 21. At this time, the power supply block 82 will continuously contact the conductive block 83. The battery 81 will supply power to the first motor 41 and the vacuum cleaner 51 through the power supply block 82 and the conductive block 83. The first motor 41 will drive the crushing blade 42 to rotate and crush the road surface, and the vacuum cleaner 51 will collect the debris and dust generated during crushing.

[0045] After the road surface is broken up, the breaking blade 42 will gradually rise and detach from the breaking chamber 23 on the road surface and sink into the inside of the injection chamber 21. At this time, the power supply block 82 will detach from the conductive block 83, and the first motor 41 and the vacuum cleaner 51 will be de-energized.

[0046] Therefore, by using the electric cylinder 31 to drive the mounting base 32 to rise and fall, the road surface can be automatically broken up and the debris and dust can be automatically collected, making operation convenient.

[0047] A protective shell 85 is installed on the lower surface of the mounting base 32. The power supply block 82 and the conductive block 83 are both located inside the protective shell 85 to avoid leakage. The connecting rod 84 slides vertically through the protective shell 85 to ensure the normal lifting and lowering of the conductive block 83.

[0048] like Figure 3 and Figure 4 As shown, the bottom of the base 2 is provided with a receiving cavity 22 connected to the injection cavity 21. The cooling unit 7 includes several heat-conducting plates 71 located in the receiving cavity 22. The upper end of the heat-conducting plate 71 is slidably connected to the base 2 in the horizontal direction, so that the heat-conducting plate 71 can only slide horizontally within the receiving cavity 22.

[0049] like Figure 2 , Figure 5 and Figure 6 As shown, the grouting unit 6 includes a material tank 61 and a pump 62 installed on the upper surface of the vehicle body 1. The inlet end of the pump 62 is connected to the material tank 61, and the outlet end of the pump 62 is connected to the grouting pipe 65. The opening of the grouting pipe 65 away from the pump 62 is located at the bottom of one of the heat-conducting plates 71.

[0050] The cooling unit 7 has two forms: closed and separated. When all the heat-conducting plates 71 are separated, the heat-conducting plates 71 will be completely submerged in the receiving cavity 22 and detached from the injection cavity 21, so that the heat-conducting plates 71 will not easily affect the rotation of the crushing blade 42 in the injection cavity 21. When all the heat-conducting plates 71 are closed, the end of the grouting pipe 65 away from the pump 62 is located directly below the injection cavity 21. The pump 62 can draw slurry from the material box and inject the slurry into the crushing cavity 23 of the road surface through the grouting pipe 65.

[0051] It is worth noting that the closed heat-conducting plate 71 will seal the opening of the injection chamber 21, making it difficult for the slurry in the crushing chamber 23 to enter the injection chamber 21 and adhere to the crushing blade 42. In addition, the lower surface of the closed heat-conducting plate 71 is flush with the lower surface of the base 2, so that the heat-conducting plate 71 is sealed at the top opening of the crushing chamber 23, making it difficult for the slurry to overflow from the crushing chamber 23 and avoiding slurry waste. Moreover, the total area of ​​the lower surface of the closed heat-conducting plate 71 is larger than the opening area of ​​the injection chamber 21. Therefore, the lower surface of the heat-conducting plate 71 will be in contact with the road surface. The slurry in the crushing chamber 23 can exchange heat directly with the road surface and also exchange heat with the road surface through the heat-conducting plate 71, so that the slurry in the crushing chamber 23 can cool and solidify quickly.

[0052] like Figure 2 and Figure 3 As shown, a second motor 63 is installed on the top of the material barrel 61. The output shaft of the second motor 63 is rotatably inserted through the material barrel 61 and coaxially connected to a stirring paddle 64 that extends into the material barrel 61.

[0053] A processor 11 is installed on the upper surface of the vehicle body 1. A contact sensor 24 is installed on the top cavity wall of the injection chamber 21. The contact sensor 24, the pump 62, and the second motor 63 are all coupled to the processor 11. A pressure block 43 that can abut against the contact sensor 24 is fixedly sleeved on the output shaft of the first motor 41. The pressure block 43 is arranged in a ring.

[0054] During the road surface crushing process, the first motor 41 will drive the crushing blade 42 to descend and extend to the outside of the injection chamber 21. At this time, the pressing block 43 will detach from the contact sensor 24. The contact sensor 24 will send a stirring signal to the processor 11. The processor 11 will control the second motor 63 to start. The second motor 63 will drive the stirring paddle 64 to rotate and stir the slurry in the material bucket 61, so that the slurry has been mixed before injection.

[0055] After the road surface is broken up, the first motor 41 will drive the breaking blade 42 to rise and sink into the inside of the injection chamber 21. At this time, the pressing block 43 will re-abut against the contact sensor 24. The contact sensor 24 will send an injection signal to the processor 11. The processor 11 will control the second motor 63 to turn off, so that the mixing blade 64 will no longer mix the slurry. At the same time, the processor 11 will control the pump 62 to start for a specified time. The pump 62 will extract a certain amount of slurry and inject it into the road surface breaking chamber 23, thereby realizing the automatic mixing and quantitative injection of the slurry.

[0056] like Figures 5 to 7As shown, a number of vertically arranged second elastic telescopic rods 34 are installed on the lower surface of the mounting base 32 and correspond one-to-one with the heat-conducting plate 71. The end of the second elastic telescopic rod 34 away from the mounting base 32 is rotatably connected to the upper surface of the heat-conducting plate 71 with the same rotating rod 35 that flips in the vertical plane. The heat-conducting plate 71 is connected to the base 2 by a spring 72.

[0057] As the crushing blade 42 descends and approaches the heat-conducting plate 71, the second elastic telescopic rod 34 will cause the rotating rod 35 to flip in the vertical plane. The rotating rod 35 will cause the heat-conducting plate 71 to move away from the injection chamber 21. The heat-conducting plate 71 will cause the spring 72 to deform. At this time, the cooling unit 7 will separate, and the heat-conducting plate 71 will not affect the descent of the crushing blade 42 to extend to the outside of the injection chamber 21.

[0058] When the crushing blade 42 extends to the outside of the injection chamber 21, the crushing blade 42 will crush the road surface. At this time, the heat-conducting plate 71 will abut against the cavity wall of the receiving cavity 22 and remain stationary. The second elastic telescopic rod 34 will be compressed to ensure that the crushing blade 42 can continue to descend.

[0059] As the crushing blade 42 gradually rises and approaches the injection chamber 21, the second elastic telescopic rod 34 will gradually rebound; when the crushing blade 42, which has sunk into the injection chamber 21, rises away from the heat-conducting plate 71, the spring 72 will return to its natural state and cause the heat-conducting plate 71 to close and seal the opening of the injection chamber 21 so that the slurry can be injected into the crushing chamber 23.

[0060] The implementation principle of a road construction damage repair device according to an embodiment of this application is as follows: During the repair of road potholes, the worker will push the vehicle body 1 to the pothole and make the injection chamber 21 directly above the pothole. Then, the electric cylinder 31 will drive the mounting base 32 to descend. The mounting base 32 will cause the base 2 to press against the road surface through the first elastic telescopic rod 33, and the injection chamber 21 will be connected to the pothole.

[0061] Then, the mounting base 32 will drive the crushing blade 42 to descend in the injection chamber 21 via the first motor 41. At the same time, the mounting base 32 will drive the rotating rod 35 to flip in the vertical plane via the second elastic telescopic rod 34. The rotating rod 35 will drive the heat-conducting plate 71 to move away from the injection chamber 21, so that the crushing blade 42 can descend and extend to the outside of the injection chamber 21. At this time, the power supply block 82 will continuously contact the conductive block 83. The battery 81 will supply power to the first motor 41 and the vacuum cleaner 51 through the power supply block 82 and the conductive block 83. The first motor 41 will drive the crushing blade 42 to rotate and crush the road surface, and the vacuum cleaner 51 will collect the crushed debris and dust. At the same time, the first motor 41 will drive the pressing block 43 to detach from the contact sensor 24. The contact sensor 24 will send a stirring signal to the processor 11. The processor 11 will control the second motor 63 to start. The second motor 63 will drive the stirring paddle 64 to rotate and stir the slurry in the material tank 61, so that the slurry has been mixed before injection.

[0062] After the crushing blade 42 has broken up the road surface in the pit, the electric cylinder 31 will drive the mounting base 32 to rise. The mounting base 32 will then drive the stirring blade to rise and sink into the injection chamber 21 via the first motor 41. The power supply block 82 will detach from the conductive block 83, the first motor 41 and the vacuum cleaner 51 will be de-energized, the spring 72 will return to its natural state and cause the heat-conducting plate 71 to close and seal the opening of the injection chamber 21. At the same time, the first motor 41 will drive the pressure block 43 to re-apply to the contact sensor 24. Sensor 24 will send a grouting signal to processor 11. Processor 11 will control the second motor 63 to shut down and control the pump 62 to start for a specified duration. Pump 62 will extract a certain amount of grout and inject it into the road surface crushing chamber 23. At this time, the lower surface of heat-conducting plate 71 will come into contact with the road surface and the grout in the crushing chamber 23. The grout in the crushing chamber 23 can exchange heat directly with the road surface and also exchange heat with the road surface through heat-conducting plate 71, so that the grout in the crushing chamber 23 can cool and solidify quickly.

[0063] In summary, by controlling the lifting and lowering of the mounting base 32 via the electric cylinder 31, workers can sequentially achieve the following: road surface breaking at the pothole, collection of debris and dust, pre-mixing and quantitative injection of slurry, and rapid cooling and molding of slurry. This eliminates the need for workers to repeatedly push and calibrate the position of the vehicle body 1, thereby improving the efficiency of road repair.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A road construction damage repair device, characterized in that: Includes a vehicle body (1) and a base (2). The vehicle body (1) is equipped with a lifting unit (3) for lifting the base (2). The bottom of the base (2) is equipped with an injection chamber (21). The injection chamber (21) is equipped with a crushing unit (4) that can be lifted relative to the base (2) and a cooling unit (7) that can contact the road surface. The cooling unit (7) has two forms: closing and opening and is used to control the opening and closing of the injection chamber (21). The vehicle body (1) is provided with a grouting unit (6), and the grouting unit (6) is provided with a grouting pipe (65) that passes through the cooling unit (7). The opening of the grouting pipe (65) away from the grouting unit (6) is located at the bottom of the cooling unit (7). When the cooling unit (7) is closed, the opening of the grouting pipe (65) away from the grouting unit (6) is located directly below the injection chamber (21). The crushing unit (4) includes a first motor (41) mounted on a mounting base (32). The output shaft of the first motor (41) is rotatably inserted through the base (2) and has crushing blades (42). The crushing blades (42) are rotatably embedded in the feeding chamber (21), which is cylindrical. The bottom of the base (2) is provided with a receiving cavity (22) connected to the injection cavity (21). The cooling unit (7) includes several heat-conducting plates (71) that can only slide horizontally within the receiving cavity (22). The lower surface of the heat-conducting plates (71) is flush with the lower surface of the base (2). The total area of ​​the lower surface of the heat-conducting plates (71) after they are closed is greater than the area of ​​the cavity opening of the injection cavity (21). The mounting base (32) is provided with several vertically arranged second elastic telescopic rods (34) that correspond one-to-one with the heat-conducting plate (71). The end of the second elastic telescopic rod (34) away from the mounting base (32) is rotatably connected to the heat-conducting plate (71) with the same rotating rod (35) that flips in the vertical plane. The heat-conducting plate (71) is connected to the base (2) by a spring (72). As the crushing blade (42) descends and approaches the heat-conducting plate (71), the second elastic telescopic rod (34) will drive the heat-conducting plate (71) to move away from the injection chamber (21) through the rotating rod (35), causing the spring (72) to deform. When the crushing blade (42) extends to the outside of the injection chamber (21), the heat-conducting plate (71) will abut against the cavity wall of the receiving cavity (22) and remain stationary, and the second elastic telescopic rod (34) will be compressed; When the crushing blade (42) sinks into the injection chamber (21) and rises away from the heat-conducting plate (71), the spring (72) will return to its natural state and cause the heat-conducting plate (71) to close.

2. The road construction damage repair device according to claim 1, characterized in that: The lifting unit (3) includes an electric cylinder (31) mounted on the vehicle body (1). The piston rod of the electric cylinder (31) extends vertically and is provided with a mounting seat (32). The mounting seat (32) is connected to the base (2) by a first elastic telescopic rod (33) that is vertically arranged.

3. The road construction damage repair device according to claim 2, characterized in that: It also includes a power supply unit (8), which includes a battery (81) on the vehicle body (1), a power supply block (82) on the mounting base (32) and a conductive block (83) on the base (2). The power supply block (82) is connected to the battery (81) by a wire, and the conductive block (83) is connected to the first motor (41) by a wire. When the crushing blade (42) extends to the outside of the injection chamber (21), the power supply block (82) will continuously contact the conductive block (83); when the crushing blade (42) sinks into the inside of the injection chamber (21), the power supply block (82) will detach from the conductive block (83).

4. The road construction damage repair device according to claim 3, characterized in that: It also includes a vacuum unit (5), which includes a vacuum cleaner (51) mounted on the vehicle body (1), a vacuum cleaner (51) with a vacuum pipe (52) on it, the vacuum pipe (52) being connected to the injection chamber (21), and a conductive block (83) being connected to the vacuum cleaner (51) via a wire.

5. A road construction damage repair device according to claim 3, characterized in that: The grouting unit (6) includes a material bucket (61) and a pump (62) mounted on the vehicle body (1). The feed end of the pump (62) is connected to the material bucket (61), and the discharge end of the pump (62) is connected to the grouting pipe (65). The material barrel (61) is equipped with a second motor (63), the output shaft of the second motor (63) is rotated through the material barrel (61) and is equipped with a stirring paddle (64) extending into the material barrel (61).

6. A road construction damage repair device according to claim 5, characterized in that: The vehicle body (1) is equipped with a processor (11), and a contact sensor (24) is provided in the injection chamber (21). The contact sensor (24), the pump (62), and the second motor (63) are all coupled to the processor (11). The output shaft of the first motor (41) is equipped with a pressure block (43) that can abut against the contact sensor (24). When the crushing blade (42) extends to the outside of the feeding chamber (21), the pressing block (43) will detach from the contact sensor (24), the contact sensor (24) will send a stirring signal to the processor (11), and the processor (11) will control the second motor (63) to start. When the crushing blade (42) sinks into the inside of the injection chamber (21), the pressing block (43) will come into contact with the contact sensor (24), the contact sensor (24) will send an injection signal to the processor (11), and the processor (11) will control the second motor (63) to shut down and control the pump (62) to start for a specified duration.

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