Road maintenance device

Abstract

The invention belongs to the technical field of road maintenance, and particularly relates to a road maintenance device which comprises a bottom plate and two groups of wheels, a storage tank is arranged on the bottom plate, one group of wheels are rotatably mounted on one side of the bottom plate, a handle is arranged at the tail of the bottom plate, universal wheels are arranged at the lower end of the tail of the bottom plate, and a crack pouring mechanism is arranged on the other side of the bottom plate. The crack pouring mechanism comprises a fixing sleeve and a material containing box, the fixing sleeve is fixedly connected with the other side of the bottom plate, the other set of wheels are rotationally installed on the fixing sleeve, the material containing box is movably connected with the fixing sleeve in an inserted mode, rectangular grooves are formed in the two sides of the fixing sleeve, bearing strips are arranged on the two sides of the material containing box and slidably connected with the rectangular grooves, and screw rods are in threaded connection with the two sides of the fixing sleeve. Due to the fact that the lower end of the material containing box is tightly attached to the road surface, in the moving process of the material containing box, repairing materials can be poured into road seams, meanwhile, redundant repairing materials are taken away, the repairing materials coated on the road surface are more uniform, and the purpose of saving the repairing materials is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of highway maintenance and repair, in particular to a highway maintenance and repair device. Background Art

[0002] Highway maintenance and repair refers to the regular inspection, upkeep and repair of existing highways to ensure the safety and traffic capacity of the highways. Highway maintenance methods include highway maintenance, micro-surfacing and grouting. Grouting is the process of applying repair materials to cracks in the road surface through grouting equipment so that the cracks in the road surface are filled and repaired.

[0003] The patent with announcement number CN221276278U discloses a highway maintenance and repair device, including a highway maintenance cart, four sets of universal wheels are arranged at the bottom of the highway maintenance cart, and a highway maintenance mixing tank is arranged on the highway maintenance cart, a sealing door is engaged at the lower port of the highway maintenance mixing tank, a feed pipe is arranged on one side of the highway maintenance mixing tank, and a stirring structure with a scraping function is arranged inside the road maintenance mixing tank, and the stirring structure is driven by a driving device. This scheme drives the stirring structure to operate inside the road maintenance mixing tank through the driving device, which not only realizes the stirring of the repair material inside the road maintenance mixing tank, but also can scrape off the repair material attached to the inner wall of the road maintenance mixing tank.

[0004] In the above scheme, when grouting the road surface, it is necessary to remove the sealing door of the lower port of the highway maintenance mixing tank. After the sealing door is removed, the repair material will flow out from the lower port. At this time, because the highway maintenance cart does not move with the flow of the repair material, too much repair material is applied at the starting point, resulting in waste of repair material. Secondly, in the process of grouting the road surface, the worker must push the highway maintenance cart to move at a speed that matches the rate at which the repair material will flow out from the lower port, so as to ensure that the repair material applied on the crack is uniform. However, the worker cannot accurately control the moving speed of the highway maintenance cart, resulting in uneven application of the repair material on the crack and further waste of the repair material. For this reason, the present invention provides a highway maintenance and repair device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a highway maintenance and repair device described in the present invention includes a base plate and two sets of wheels, a material storage tank is arranged on the base plate, one set of wheels is rotatably mounted on one side of the base plate, a handle is arranged at the rear of the base plate, a universal wheel is arranged at the lower end of the rear of the base plate, a caulking mechanism is arranged on the other side of the base plate, the caulking mechanism includes a fixed sleeve, the fixed sleeve is fixedly connected to the other side of the base plate, and the other set of wheels is rotatably mounted on the fixed sleeve, a material storage box of the fixed sleeve is movably plugged, and rectangular grooves are arranged on both sides of the fixed sleeve , receiving strips are provided on both sides of the material holding box, the receiving strips are slidably connected to the rectangular groove, screws are screwed on both sides of the fixed sleeve, a U-shaped elastic strip is provided on the screw, the lower end of the screw passes through the receiving strip, a baffle is provided above the material holding box, the upper end of the baffle is fixedly connected to one end of the first spring, the other end of the first spring is fixedly connected to the upper end of the blocking plate, the blocking plate is hinged to the bracket, the baffle and the bracket are fixedly connected to one side of the storage tank, the U-shaped elastic strip is located in the rectangular groove, the U-shaped elastic strip is close to the receiving strip, a discharge nozzle is provided at the lower side of one side of the storage tank, and the blocking plate is used to block the discharge nozzle; Since the lower end of the material box is close to the road surface, during the movement of the material box, not only will the repair material be poured into the road crack, but also the excess repair material will be taken away, so that the repair material coated on the road surface is more evenly applied, thereby achieving the purpose of saving repair materials.

[0007] Preferably, the caulking mechanism further includes an adjusting mechanism, which includes a brake rope, the lower end of which is connected to the upper end of the blocking plate, two sets of fixing parts are arranged on the brake rope, the upper end of the brake rope is connected to the pressure rod, the pressure rod is hinged on the handle, the handle is composed of a rope tube and a steel wire, the upper end of the steel wire is connected to the pressure rod, the lower end of the steel wire is connected to the upper end of the blocking plate, one set of fixing parts is fixedly installed on one side of the storage tank, and the other set of fixing parts is fixedly installed on the handle; The pressure rod is held and pressed to rotate. The rotating pressure rod drags the steel wire, which drives the sealing plate to rotate, and the sealing plate stretches the first spring, thereby realizing the above-mentioned addition of repair material to the material box. Since the operation is simple and fast, it is convenient for the staff to add repair material to the material box. Secondly, the operation can be carried out during the movement of the device, so as not to interrupt the repair of the road seam, thereby improving the repair efficiency of the road seam.

[0008] Preferably, a mounting groove is provided on the side of the blocking plate facing away from the discharge nozzle, the mounting groove is rotatably connected to the rotary tube, a scraper plate is fixedly connected to one end of the rotary tube, a touch pressure head is movably plugged on the other end of the rotary tube, a second spring is arranged in the rotary tube, two groups of pins are arranged on the outer ring of the touch pressure head, two groups of spiral slide grooves are provided on the rotary tube, the two groups of pins are respectively located in the two groups of spiral slide grooves, one end of the pin is fixedly connected to a guide block, two groups of guide grooves are provided on the inner wall of the mounting groove, the guide block is slidably connected to the guide groove, the scraper plate is closely attached to a side of the blocking plate facing the discharge nozzle, and a fixing plate for squeezing the touch pressure head is provided on the baffle plate; When the sealing plate releases the blockage of the discharge nozzle, the touch pressure head on the back of the sealing plate will be squeezed by the fixed plate, causing the touch pressure head to slide along the inner cavity of the rotary tube toward the scraper and compress the second spring. At the same time, the touch pressure head drives the pin shaft and the guide block to move. The guide block slides along the guide groove, and the pin shaft squeezes the groove wall of the spiral groove, causing the rotary tube and the scraper to rotate. The rotating scraper will scrape off the repair material attached to the sealing plate. Therefore, each time the sealing plate is opened, the repair material on the sealing plate will be scraped off to ensure that the sealing plate can be flush with the discharge nozzle to avoid leakage of the repair material.

[0009] The beneficial effects of the present invention are as follows: 1. Since the lower end of the material box is close to the road surface, during the movement of the material box, not only will the repair material be poured into the road crack, but the excess repair material will also be taken away, so that the repair material coated on the road surface is more even, achieving the purpose of saving repair materials.

[0010] 2. Use your fingers to hold and press the pressure rod to rotate it. The rotating pressure rod drags the steel wire, which drives the sealing plate to rotate, and the sealing plate stretches the first spring, thereby realizing the above-mentioned addition of repair material to the material box. When the material box is full of repair material, release the grip on the pressure rod. Under the action of the rebound force of the first spring, the sealing plate will block the discharge nozzle again, thereby realizing the opening and closing of the discharge nozzle. Since the operation is simple and fast, it is convenient for the staff to add repair material to the material box. Secondly, it can be operated during the movement of the device, so as not to interrupt the repair of the road seam, thereby improving the repair efficiency of the road seam.

[0011] 3. When the sealing plate releases the blockage of the discharge nozzle, the touch pressure head on the back of the sealing plate will be squeezed by the fixed plate, causing the touch pressure head to slide along the inner cavity of the rotary tube toward the scraper and compress the second spring. At the same time, the touch pressure head drives the pin shaft and the guide block to move. The guide block slides along the guide groove, and the pin shaft squeezes the groove wall of the spiral groove, causing the rotary tube and the scraper to rotate. The rotating scraper will scrape off the repair material attached to the sealing plate until the sealing plate is parallel to the fixed plate. Therefore, each time the sealing plate is opened, the repair material on the sealing plate will be scraped off to ensure that the sealing plate can be flush with the discharge nozzle to avoid leakage of the repair material. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the bottom plate, storage tank and wheel assembly of the present invention.

[0015] Figure 3It is a schematic diagram of the combination of the caulking mechanism and the discharge nozzle of the present invention.

[0016] Figure 4 It is a schematic diagram of the combination of the storage tank, handle and caulking mechanism of the present invention.

[0017] Figure 5 It is a schematic diagram of the sealing plate, brake rope and pressure rod assembly of the present invention.

[0018] Figure 6 It is a schematic diagram of the assembly of the discharge nozzle, the material containing box, the baffle, the first spring, the blocking plate and the bracket of the present invention.

[0019] Figure 7 It is a cross-sectional schematic diagram of the sealing plate of the present invention.

[0020] Figure 8 It is a schematic diagram of the assembly of the rotary tube contact pressure head, the second spring, the pin shaft, the guide block and the spiral slide groove of the present invention.

[0021] In the figure: 1, bottom plate; 2, storage tank; 201, discharge nozzle; 3, handle; 4, universal wheel; 5, caulking mechanism; 6, wheel; 501, fixing sleeve; 502, material box; 503, rectangular groove; 504, receiving strip; 505, U-shaped elastic strip; 506, screw; 507, baffle; 5071, fixing plate; 508, first spring; 509, blocking plate; 91, mounting groove; 92, guide groove; 510, bracket; 511, adjustment mechanism; 5111, brake rope; 11, rope tube; 12, steel wire; 5112, pressure rod; 5113, fixing piece; 5091, rotating tube; 5092, scraper; 5093, contact pressure head; 5094, second spring; 5095, pin; 5096, guide block; 5097, spiral slide. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Embodiment 1 like Figures 1 to 3As shown, a highway maintenance and repair device according to an embodiment of the present invention comprises a base plate 1 and two sets of wheels 6, a storage tank 2 is provided on the base plate 1, a repair material is placed in the storage tank 2, one set of wheels 6 is rotatably mounted on one side of the base plate 1, a handle 3 is provided at the rear of the base plate 1, a universal wheel 4 is provided at the lower end of the rear of the base plate 1, a caulking mechanism 5 is provided on the other side of the base plate 1, the caulking mechanism 5 comprises a fixing sleeve 501, the fixing sleeve 501 is fixedly connected to the other side of the base plate 1, and the other set of wheels 6 is rotatably mounted on the fixing sleeve 501, a material box 502 movably plugged into the fixing sleeve 501, rectangular grooves 503 are provided on both sides of the fixing sleeve 501, receiving strips 504 are provided on both sides of the material box 502, and the receiving strips 504 are provided on both sides of the material box 502. 04 is slidably connected to a rectangular groove 503, screws 506 are screwed on both sides of the fixed sleeve 501, a U-shaped elastic strip 505 is sleeved on the screw 506, the lower end of the screw 506 passes through the receiving strip 504, a baffle 507 is arranged above the material box 502, the upper end of the baffle 507 is fixedly connected to one end of a first spring 508, the other end of the first spring 508 is fixedly connected to the upper end of a blocking plate 509, the blocking plate 509 is hinged to a bracket 510, the baffle 507 and the bracket 510 are fixedly connected to one side of the storage tank 2, the U-shaped elastic strip 505 is located in the rectangular groove 503, the U-shaped elastic strip 505 is close to the receiving strip 504, a discharge nozzle 201 is arranged at the lower side of the storage tank 2, and the sealing plate 509 is used to block the discharge nozzle 201.

[0024] Specifically, a resistance wire heater is provided on the storage tank 2, and the resistance wire heater is used to keep the repair material in the storage tank 2 warm to prevent the repair material from solidifying. The repair material is hot asphalt. In the initial state, the material box 502 is higher than the ground, and the U-shaped elastic bar 505 is in a compressed state. When the road seam needs to be repaired, the handle 3 is pushed to move the device to the initial end of the road seam, and the material box 502 is located directly above the initial end, and then the two sets of screws 506 are screwed to screw the screws 506 downward. At the same time, under the action of gravity, the receiving strip 504 moves downward together with the material box 502 until the lower end of the material box 502 is close to the road surface under the rebound force of the U-shaped elastic bar 505, and then the upper end of the blocking plate 509 is moved to rotate the blocking plate 509, and the blocking plate 509 stretches the first spring 508, thereby releasing the The sealing plate 509 blocks the discharge nozzle 201, and the repair material in the storage tank 2 flows into the material box 502 through the discharge nozzle 201 until the material box 502 is full of the repair material, and then the sealing plate 509 is loosened, and under the action of the rebound force of the first spring 508, the discharge nozzle 201 is blocked by the sealing plate 509 again. At this time, the handle 3 is pushed, and with the cooperation of the two sets of wheels 6 and the universal wheel 4, the material box 502 is moved along the road seam, so that the repair material in the material box 502 penetrates into the road seam to achieve the repair of the road seam. Compared with the prior art, since the lower end of the material box 502 is in close contact with the road surface, during the movement of the material box 502, not only will the repair material be poured into the road seam, but also the excess repair material will be taken away, so that the repair material coated on the road surface is more evenly distributed, thereby achieving the purpose of saving repair materials.

[0025] like Figure 4 and Figure 5 As shown, the grouting mechanism 5 also includes an adjusting mechanism 511, which includes a brake rope 5111. The lower end of the brake rope 5111 is connected to the upper end of the blocking plate 509. Two groups of fixing parts 5113 are arranged on the brake rope 5111. The upper end of the brake rope 5111 is connected to the pressure rod 5112. The pressure rod 5112 is hinged on the handle 3. The handle 3 consists of a rope tube 11 and a steel wire 12. The upper end of the steel wire 12 is connected to the pressure rod 5112, and the lower end of the steel wire 12 is connected to the upper end of the blocking plate 509. One group of fixing parts 5113 is fixedly installed on one side of the storage tank 2, and the other group of fixing parts 5113 is fixedly installed on the handle 3.

[0026] Specifically, when adding repair material to the material box 502, the staff needs to stop pushing the device to move, and then approach the caulking mechanism 5 to operate, which is inefficient and time-consuming, and reduces the efficiency of road seam repair. Therefore, when adding repair material to the material box 502 during the process of pushing the device to move, the staff uses fingers to press the pressure rod 5112 to rotate the pressure rod 5112, and the rotating pressure rod 5112 drags the steel wire 12, and the steel wire 12 drives the blocking plate 509 to rotate, and the blocking plate 509 stretches the first spring 5 08, thereby realizing the above-mentioned adding of repair material to the material box 502. When the material box 502 is full of repair material, the grip of the pressure rod 5112 is released, and under the action of the rebound force of the first spring 508, the blocking plate 509 will block the discharge nozzle 201 again, thereby realizing the opening and closing of the discharge nozzle 201. Since the operation is simple and fast, it is convenient for the staff to add repair material to the material box 502. Secondly, the operation can be carried out during the movement of the device, so as not to interrupt the repair of the road seam, thereby improving the repair efficiency of the road seam.

[0027] Embodiment 2 like Figures 6 to 8 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a sealing plate 509 is provided with a mounting groove 91 on the side facing away from the discharge nozzle 201, the mounting groove 91 is rotatably connected to a rotary tube 5091, a scraper 5092 is fixedly connected to one end of the rotary tube 5091, a contact pressure head 5093 is movably plugged into the other end of the rotary tube 5091, a second spring 5094 is arranged in the rotary tube 5091, and two sets of pins 5095 are arranged on the outer ring of the contact pressure head 5093. Two groups of spiral grooves 5097 are provided on the rotary tube 5091, and two groups of pins 5095 are respectively located in the two groups of spiral grooves 5097. One end of the pin 5095 is fixedly connected to the guide block 5096. Two groups of guide grooves 92 are provided on the inner wall of the mounting groove 91. The guide block 5096 is slidably connected to the guide groove 92. The scraper 5092 is close to the side of the blocking plate facing the discharge nozzle 201. A fixing plate 5071 for squeezing the contact pressure head 5093 is provided on the baffle 507.

[0028] Specifically, when the sealing plate 509 is in the process of opening and closing the discharge nozzle 201, a repair material will be attached to the side of the sealing plate 509 facing the discharge nozzle 201. The repair material will solidify after being attached to the sealing plate 509 for a long time. As the amount of repair material attached to the sealing plate 509 increases, the solidified repair material will make the side of the sealing plate 509 facing the discharge nozzle 201 uneven, making it impossible for the sealing plate 509 to be flush with the discharge nozzle 201, causing leakage of the repair material. Therefore, when the sealing plate 509 is released from the process of blocking the discharge nozzle 201, the contact pressure head 5093 on the back side of the sealing plate 509 will be squeezed by the fixed plate 5071, causing the contact pressure head 5093 to slide along the inner cavity of the rotary tube 5091 toward the scraper 5092, and compressing the second spring 5094. At the same time, the contact pressure head 5093 The pin shaft 5095 is driven to move together with the guide block 5096, and the guide block 5096 slides along the guide groove 92. The pin shaft 5095 squeezes the groove wall of the spiral slide groove 5097, so that the rotary tube 5091 and the scraper 5092 rotate, and the rotating scraper 5092 scrapes off the repair material attached to the sealing plate 509 until the sealing plate 509 is parallel to the fixed plate 5071. When the sealing plate 509 blocks the discharge nozzle 201, the fixed plate 5071 will release the squeeze on the contact pressure head 5093, and under the action of the rebound force of the second spring 5094, the scraper 5092 returns to its original position. Therefore, each time the sealing plate 509 is opened, the repair material on the sealing plate 509 will be scraped off to ensure that the sealing plate 509 can be flush with the discharge nozzle 201 to avoid leakage of the repair material.

[0029] Working principle: By pushing the handle 3, the device is moved to the initial end of the road gap, and the material box 502 is located just above the initial end, and then the two sets of screws 506 are screwed to make the screws 506 screw downward, and at the same time, under the action of gravity, the receiving bar 504 moves downward together with the material box 502 until the lower end of the material box 502 is close to the road surface under the rebound force of the U-shaped elastic bar 505, and then the upper end of the blocking plate 509 is moved to make the blocking plate 509 rotate, and the blocking plate 509 stretches the first spring 508, thereby releasing the blocking plate 509 blocks the discharge nozzle 201, and the repair material in the storage tank 2 flows into the material box 502 through the discharge nozzle 201 until the material box 502 is full of the repair material, and then the blocking plate 509 is loosened, and the discharge nozzle 201 is blocked by the blocking plate 509 again under the rebound force of the first spring 508. At this time, the handle 3 is pushed, and the material box 502 moves along the road gap under the cooperation of the two sets of wheels 6 and the universal wheel 4, so that the repair material in the material box 502 penetrates into the road gap, thereby repairing the road gap; When it is necessary to add repair material to the material box 502 during the process of pushing the device to move, the pressure rod 5112 is gripped and pressed by fingers to rotate the pressure rod 5112. The rotating pressure rod 5112 drags the steel wire 12, and the steel wire 12 drives the blocking plate 509 to rotate, and the blocking plate 509 stretches the first spring 508, thereby realizing the above-mentioned addition of repair material to the material box 502. When the material box 502 is full of repair material, the grip on the pressure rod 5112 is released, and under the action of the rebound force of the first spring 508, the blocking plate 509 will block the discharge nozzle 201 again, thereby realizing the opening and closing of the discharge nozzle 201. When the blocking plate 509 is released from blocking the discharge nozzle 201, the contact pressure head 5093 on the back side of the blocking plate 509 is squeezed by the fixed plate 5071, so that the contact pressure head 5093 slides along the inner cavity of the rotary tube 5091 toward the scraper 5092 and compresses the second spring 5094. At the same time, the contact pressure head 5093 drives the pin shaft 5095 and the guide block 5096 to move. The guide block 5096 slides along the guide groove 92, and the pin shaft 5095 moves. 95 squeezes the groove wall of the spiral slide groove 5097, causing the rotary tube 5091 to rotate together with the scraper 5092, and the rotating scraper 5092 scrapes off the repair material attached to the blocking plate 509 until the blocking plate 509 is parallel to the fixed plate 5071. When the blocking plate 509 blocks the discharge nozzle 201, the fixed plate 5071 will release the squeezing of the contact pressure head 5093, and under the rebound force of the second spring 5094, the scraper 5092 returns to its original position.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A road maintenance and repair device, comprising a base plate (1) and two sets of wheels (6), characterized in that: A material storage tank (2) is provided on the bottom plate (1), a group of wheels (6) are rotatably mounted on one side of the bottom plate (1), a handle (3) is provided at the rear of the bottom plate (1), a universal wheel (4) is provided at the lower end of the rear of the bottom plate (1), and a caulking mechanism (5) is provided on the other side of the bottom plate (1); The seam filling mechanism (5) comprises: A fixing sleeve (501), the fixing sleeve (501) being fixedly connected to the other side of the base plate (1), and another set of wheels (6) being rotatably mounted on the fixing sleeve (501); A material containing box (502) movably plugged into the fixed sleeve (501); Rectangular grooves (503) are provided on both sides of the fixing sleeve (501), receiving strips (504) are provided on both sides of the material containing box (502), the receiving strips (504) are slidably connected to the rectangular grooves (503), screw rods (506) are screwed on both sides of the fixing sleeve (501), a U-shaped elastic strip (505) is sleeved on the screw rods (506), and the lower end of the screw rods (506) passes through the receiving strips (504); A baffle (507) is provided above the material holding box (502); the upper end of the baffle (507) is fixedly connected to one end of a first spring (508); the other end of the first spring (508) is fixedly connected to the upper end of a blocking plate (509); and the blocking plate (509) is hinged to a bracket (510).

2. A road maintenance and repair device according to claim 1, characterized in that: The baffle (507) and the bracket (510) are both fixedly connected to one side of the storage tank (2); the U-shaped elastic bar (505) is located in the rectangular groove (503); and the U-shaped elastic bar (505) is closely attached to the receiving bar (504).

3. A road maintenance and repair device according to claim 2, characterized in that: A discharge nozzle (201) is provided at the lower side of the storage tank (2), and the blocking plate (509) is used to block the discharge nozzle (201).

4. A road maintenance and repair device according to claim 3, characterized in that: The caulking mechanism (5) further comprises an adjusting mechanism (501), wherein the adjusting mechanism (501) comprises a brake rope (5111), wherein the lower end of the brake rope (5111) is connected to the upper end of the blocking plate (509); Two groups of fixing parts (5113) are arranged on the brake rope (5111); The upper end of the brake rope (5111) is connected to a pressure rod (5112), and the pressure rod (5112) is hinged on the handle (3).

5. A road maintenance and repair device according to claim 4, characterized in that: The handle (3) is composed of a rope tube (11) and a steel wire (12); the upper end of the steel wire (12) is connected to the pressure rod (5112), and the lower end of the steel wire (12) is connected to the upper end of the blocking plate (509).

6. A road maintenance and repair device according to claim 5, characterized in that: One group of the fixing parts (5113) is fixedly mounted on one side of the material storage tank (2), and another group of the fixing parts (5113) is fixedly mounted on the handle (3).

7. A road maintenance and repair device according to claim 6, characterized in that: The sealing plate (509) is provided with a mounting groove (91) on a side facing away from the discharge nozzle (201), and the mounting groove (91) is rotatably connected to the rotary tube (5091); A scraper (5092) fixedly connected to one end of the rotary tube (5091); A contact pressure head (5093) movably plugged into another end of the rotary tube (5091); A second spring (5094) is disposed in the rotary tube (5091).

8. A road maintenance and repair device according to claim 7, characterized in that: Two groups of pins (5095) are arranged on the outer ring of the touch pressure head (5093), and two groups of spiral grooves (5097) are opened on the rotary tube (5091). The two groups of pins (5095) are respectively located in the two groups of spiral grooves (5097).

9. A road maintenance and repair device according to claim 8, characterized in that: One end of the pin shaft (5095) is fixedly connected to a guide block (5096); two groups of guide grooves (92) are provided on the inner wall of the mounting groove (91); and the guide block (5096) is slidably connected to the guide grooves (92).

10. A road maintenance and repair device according to claim 9, characterized in that: The scraper (5092) is in close contact with a side of the blocking plate that faces the discharge nozzle (201), and a fixing plate (5071) for pressing the contact pressure head (5093) is provided on the baffle plate (507).

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