Repair device for road maintenance and use method thereof

Abstract

The invention discloses a repairing device for road maintenance and a using method thereof, relates to the field of road repairing devices, and mainly aims at solving the problem that the discharging width of an existing repairing device is inconvenient to adjust. A cover body of a material box of the vehicle body is hinged to the vehicle body. The handle is connected to the rear end of the support. The first baffle plate is in sliding contact with the discharge hole of the material box; an opening is formed in the lower end of a box body on the lower portion of the trolley body, a second baffle at the opening is installed in a sliding rail, the sliding rail is fixed to the trolley body, a first transmission shaft and a second transmission shaft are connected with a gearbox, and a first gear on the second transmission shaft is meshed with a rack on the second baffle. A second bevel gear on the second screw rod is meshed with a first bevel gear on the second transmission shaft; the other bearing seat is slidably connected with a sliding rod, the bearing seat connected with the second screw is slidably arranged in the sliding groove of the second baffle, and the bearing seat connected with the sliding rod is fixed to the first baffle. The method is suitable for repairing ground gaps with different widths.

Description

Technical field:

[0001] The invention relates to the field of road repair devices, and in particular to a repair device for highway maintenance and a use method thereof. Background technology:

[0002] When a car is driving on the road, in addition to overcoming various resistances, it also transmits vertical and horizontal forces to the road through the wheels. The horizontal forces are divided into two types: longitudinal and lateral. In addition, the road surface is also affected by the impact force of the vehicle, and a vacuum suction effect is generated behind the vehicle body. From the above situations, it can be easily understood that when the road surface is used, various forms of forces will act on it, such as tension, pressure, and other shear forces. If these pressures exceed the bearing capacity of the entire road surface structure or a certain component, the road will be cracked, collapsed, wavy, loose and damaged.

[0003] The pavement structure is exposed to the atmosphere and natural environment, and is often affected by changes in temperature and moisture. Its mechanical properties are constantly changing, and its strength and stiffness are unstable, and the road conditions are sometimes good and sometimes bad. The pavement structure has to withstand repeated effects of driving loads and factors such as hot and cold, dry and wet climates, which gradually produce fatigue damage and plastic deformation accumulation. In addition, the pavement material may be damaged due to aging and decay, shortening the service life of the pavement.

[0004] The quality of roads is directly related to their later maintenance work, so we must take scientific and reasonable maintenance measures to ensure that the road surface has sufficient strength, rigidity and stability. Only in this way can the road surface be prevented from deformation under the action of vehicle loads. The road surface should be flat and intact, with moderate road humps, unobstructed drainage, and smooth and safe driving. The original road surface should be improved in a planned manner to improve the technical conditions to meet the development of the transportation industry.

[0005] In the prior art, for crack repair work that can be directly filled with asphalt, the staff pours the stirred asphalt into an asphalt repair cart, and moves the repair cart to pour the asphalt into the gaps in the ground, thereby repairing the ground. Since the width of the trolley's discharge chute is fixed, when repairing cracks of different widths, it is necessary to replace discharge chutes of different widths. There is a defect that the discharge width is not convenient for flexible adjustment, thereby reducing the repair efficiency. Summary of the invention:

[0006] The technical problem to be solved by the present invention is to provide a repair device for highway maintenance and a method of using the same; the device has the advantage of easy adjustment of discharge, and solves the problem of inflexible adjustment of discharge in the prior art, thereby reducing the repair efficiency.

[0007] The object of the present invention is achieved in that:

[0008] The vehicle comprises a vehicle body, the bottom of which is provided with running wheels, a material box is arranged at the front half of the vehicle body, the rear end of a cover body at the top of the material box is hinged to the top of the vehicle body, a groove is arranged at the rear half of the vehicle body, the opening of the groove is located at the upper surface of the vehicle body, a through hole is arranged at the rear side surface of the vehicle body, and the through hole is connected with the groove;

[0009] A handle is arranged at the rear of the vehicle body, and the handle is connected to the rear ends of the two brackets, and the front ends of the two brackets are respectively hinged on the left side wall and the right side wall of the vehicle body.

[0010] It also includes an operation limit assembly, which includes two support rods respectively fixed on two brackets;

[0011] Two bases are symmetrically fixed on the top of the cover body, the front ends of the two first connecting rods are rotatably connected to the front end tops of the two bases, the rear ends of the two first connecting rods are connected together by a cross bar, the rear parts of the two first connecting rods are placed on the support rod, the two bases are provided with sliding grooves, the two sliding grooves are slidably connected with the second connecting rods, the rear part of the second connecting rod is also provided with a sliding groove, the slider is slidably connected in the sliding groove at the rear of the second connecting rod, the slider is provided with a threaded hole, the sliding groove at the rear of the second connecting rod is also provided with a first screw rod installed in cooperation with the slider, the front end of the first screw rod is threadedly connected to the second connecting rod, and screwing the first screw rod can drive the slider rod to move forward and backward in the sliding groove of the second connecting rod; the first arc plate and the second arc plate are provided in the groove at the rear of the box body, the second arc plate is fixed on the front side wall of the groove, and the two sliders are rotatably connected to the two side surfaces of the first arc plate.

[0012] It also includes a discharge port arranged at the bottom of the material box, a discharge assembly is arranged on the vehicle body at the discharge port, the discharge assembly includes a first baffle plate arranged at the discharge port, slideways are arranged on the front and rear side walls of the discharge port at the bottom of the material box, and both sides of the first baffle plate are in sliding contact with the slideways on both sides of the discharge port; it also includes a box body, and the top of the box body is slidably connected to a top plate;

[0013] The lower end of the box body has an opening, the inner ends of the front side plate and the rear side plate of the box body are fixed to the vehicle body on both sides of the first baffle, the inside of the box body is connected with the discharge port of the material box, and the raw materials in the material box can enter the box body through the discharge port at the bottom thereof;

[0014] It also includes a material blocking assembly, which includes a second baffle plate arranged at the opening at the lower end of the box body. The front and rear sides of the second baffle plate are slidably installed in the slide rail, and the slide rail is fixed on the lower surface of the vehicle body. The size of the opening at the lower end of the box body can be changed by the sliding position of the second baffle plate in the slide rail.

[0015] There are two racks on the second baffle plate located outside the box body, and the two racks are respectively fixed to the upper surfaces of the second baffle plate at the front and rear of the box body;

[0016] It also includes a transmission assembly, which includes a vertical first transmission shaft, which is installed at the rear of the vehicle body through a bearing, and the lower end of the first transmission shaft is connected to the input end of the gear box, and the gear box is fixed on the vehicle body. A horizontal second transmission shaft is installed at the bottom of the vehicle body through a bearing, and the rear end of the second transmission shaft is connected to the output end of the gear box, and the front end of the second transmission shaft passes through the box body. The second transmission shaft is respectively fixed with first gears at positions corresponding to the two racks, and the two first gears are respectively meshed with the two racks.

[0017] The invention also includes an adjustment component, which includes two bearing seats, which are respectively arranged on the front and rear side surfaces of the first baffle, one of which is threadedly connected with a second screw, the lower end of the second screw is fixed with a second bevel gear, the front end of the second transmission shaft is fixed with a first bevel gear, and the first bevel gear and the second bevel gear are meshed; the other bearing seat is slidably connected with a slide bar, the front end surface of the first baffle facing the second screw is provided with an axial slide groove, the bearing seat threadedly connected with the second screw is slidably arranged in the slide groove, a spring is connected between the bottom wall of the slide groove and the bearing seat, the bearing seat slidably connected with the slide bar is fixed on the rear end surface of the first baffle, the lower part of the second screw is rotatably connected to the side surface of the vehicle body, and the lower part of the slide bar is fixedly connected to the side surface of the vehicle body. The lower ends of the second screw and the slide bar are both spaced apart from the second baffle, so that the movement of the second baffle is not hindered.

[0018] Two bearing seats, one inner side wall of which has internal threads, and the other inner side wall of which is a smooth surface.

[0019] A card block is fixed on the vehicle body above the first baffle, and the card block includes a horizontal side and a vertical side fixed at the front and rear ends of the horizontal side and extending downward. When the first baffle moves upward, the upper end of the first baffle can run between the two vertical sides of the card block and contact the horizontal side. Through holes are correspondingly provided on the two vertical sides of the card block, and a through hole that runs horizontally through the entire first baffle is provided on the upper end of the first baffle. When the first baffle contacts the horizontal side of the card block, the through holes on the two vertical sides of the card block and the through holes on the first baffle are on the same horizontal line, and pins can be inserted into the through holes of the card block and the first baffle to achieve the limiting of the first baffle.

[0020] It also includes a pressing assembly, which includes a first cross bar, a first cross bar fixed to the bottom of the second baffle, a second cross bar fixed to the outer end of the slide rail, and a first pressing plate and a second pressing plate slidably connected between the two cross bars, that is, a sliding groove is opened on the first pressing plate, and a sliding block is fixed on the second pressing plate, the sliding block is installed in the sliding groove, the first pressing plate is fixed on the first cross bar, and the second pressing plate is fixed on the second cross bar.

[0021] A method for using a repair device for highway maintenance comprises the following steps:

[0022] Operate the limit assembly to change the opening and closing angle of the cover body, and pour the mixed asphalt into the material box of the vehicle body;

[0023] The transmission component is controlled to change the position of the second baffle to change the size of the opening at the bottom of the box body. The transmission component can drive the adjustment component to open the first baffle to allow the raw materials in the box body to be discharged;

[0024] The vehicle body is moved, and the raw materials are guided out of the box body into the gaps on the ground.

[0025] The advantages of the present invention are:

[0026] 1. The road maintenance repair device controls the transmission component, which drives the rack to move, so that the second baffle on the rack slides in the two slide rails at the bottom of the box body, thereby changing the width of the discharge port at the bottom of the box body, so as to be suitable for ground gaps of different widths.

[0027] 2. The road maintenance repair device can also change the height of the first baffle on the vehicle body when the transmission assembly is operated, so that the first baffle rises or falls. When the first baffle rises, the discharge port of the material box on the vehicle body is opened, and the raw materials are introduced into the box body through the discharge port, and the first baffle is easy to open.

[0028] 3. The road maintenance repair device changes the width of the two pressing plates during the movement of the second baffle plate, so that it is suitable for road surfaces with gaps of different widths. Users can also observe the width of the pressing plates and then the opening length of the second baffle plate, so as to facilitate alignment with the gap width on the ground.

[0029] 4. When the cover on the vehicle body needs to be opened, the road maintenance repair device can change the opening and closing angle of the cover by operating the limit assembly. When the cover is opened, the distance between the two arc plates is opened, so that the user can place the gas tank between the two arc plates. After the cover is closed, one of the arc plates is squeezed against the outer wall of the gas tank through the work of the limit assembly, thereby fixing the gas tank in the vehicle body. Description of the drawings:

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another angle;

[0032] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention from another angle;

[0033] Figure 4 It is a structural schematic diagram of the limiting component in the present invention;

[0034] Figure 5for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0035] Figure 6 It is a partial structural schematic diagram of the transmission assembly and the pressing assembly in the present invention;

[0036] Figure 7 It is a schematic diagram of the local structure of the transmission component in the present invention. Specific implementation method:

[0037] Combine the following Figure 1-7 The present invention is further described;

[0038] It comprises a vehicle body 1, a running wheel 2 is arranged at the bottom of the vehicle body, a material box is arranged at the front half of the vehicle body, a cover body 3 at the top of the material box is hinged at the rear end to the top of the vehicle body, a groove 4 is arranged at the rear half of the vehicle body, the opening of the groove is located at the upper surface of the vehicle body, a through hole 5 is arranged at the rear side surface of the vehicle body, and the through hole is connected with the groove;

[0039] A handle 6 is provided at the rear of the vehicle body, and the handle is connected to the rear ends of two brackets 7, and the front ends of the two brackets are respectively hinged on the left and right walls of the vehicle body.

[0040] It also includes an operation limit assembly, which includes two support rods 8 respectively fixed on two brackets;

[0041] Two bases 9 are symmetrically fixed on the top of the cover body, the front ends of the two first connecting rods 10 are rotatably connected to the front end tops of the two bases 9, the rear ends of the two first connecting rods are connected together by a cross bar 11, the rear parts of the two first connecting rods are placed on the support rod 8, the two bases are provided with slide grooves, the two slide grooves are slidably connected with the second connecting rods 12, the rear part of the second connecting rod is also provided with a slide groove, the slider 13 is slidably connected in the slide groove at the rear of the second connecting rod, the slider is provided with a threaded hole, and the slide groove at the rear of the second connecting rod is also provided with a first screw 14 installed in cooperation with the slider, the front end of the first screw is threadedly connected to the second connecting rod, and screwing the first screw can drive the slider to move forward and backward in the slide groove of the second connecting rod; a first arc plate 15 and a second arc plate 16 are provided in the groove at the rear of the box body, the second arc plate is fixed on the front side wall of the groove, and the two sliders are rotatably connected to the two side surfaces of the first arc plate.

[0042] A gas tank can be placed in the groove between the two arc plates. The first screw rod is turned to drive the first arc plate to move through the slider, so that gas tanks of different specifications can be placed in the space between the two arc plates. The pipeline connected to the gas tank can pass through the through hole to avoid the clutter of the pipeline. The raw materials are introduced into the material box, and the gas tank is placed in the groove between the two arc plates. After the gas tank is connected, the raw materials in the material box can be heated by the gas tank. A furnace plate is set at the bottom of the vehicle body, and the gas tank is connected by the furnace plate. The furnace plate can be controlled to heat the material box, thereby keeping the raw material asphalt warm. The heating principle is similar to that of a gas stove. By operating the first connecting rod, the opening and closing angle of the cover body can be changed. When the cover body is opened, the distance between the two arc plates increases, so that it is convenient for the user to place the gas tank in the groove between the two arc plates. After the cover body is closed, the first arc plate is squeezed on the outer wall of the gas tank by the first screw rod and the second connecting rod, and then the gas tank is fixed in the groove of the vehicle body.

[0043] It also includes a discharge port arranged at the bottom of the material box, a discharge assembly is arranged on the vehicle body at the discharge port, the discharge assembly includes a first baffle 17 arranged at the discharge port, slideways are arranged on the front and rear side walls of the discharge port at the bottom of the material box, and both sides of the first baffle are in sliding contact with the slideways on both sides of the discharge port; it also includes a box body 18, the top of the box body is slidably connected to a top plate 19, and the operator can clean the raw materials inside the box body by sliding the top plate;

[0044] The lower end of the box body has an opening, the inner ends of the front side plate and the rear side plate of the box body are fixed to the vehicle body on both sides of the first baffle, the inside of the box body is connected with the discharge port of the material box, and the raw materials in the material box can enter the box body through the discharge port at the bottom thereof;

[0045] It also includes a material blocking assembly, which includes a second baffle 20 arranged at the opening at the lower end of the box body. The front and rear sides of the second baffle are slidably installed in the slide rail 21, and the slide rail is fixed on the lower surface of the vehicle body. The size of the opening at the lower end of the box body can be changed by the sliding position of the second baffle in the slide rail, thereby adapting to road surfaces with gaps of different widths.

[0046] There are two racks 22 on the second baffle plate outside the box body, and the two racks are respectively fixed on the upper surfaces of the second baffle plate at the front and rear of the box body;

[0047] It also includes a transmission assembly, which includes a vertical first transmission shaft 23, which is installed at the rear of the vehicle body through a bearing, and the lower end of the first transmission shaft is connected to the input end of a gear box 24, and the gear box is fixed on the vehicle body. A horizontal second transmission shaft 25 is installed at the bottom of the vehicle body through a bearing, and the rear end of the second transmission shaft is connected to the output end of the gear box, and the front end of the second transmission shaft passes through the box body. The second transmission shaft is respectively fixed with first gears 26 at positions corresponding to the two racks, and the two first gears are respectively engaged with the two racks. The first transmission shaft is rotated to drive the second transmission shaft to rotate, and then the second baffle is driven to change its position through the first gear, so that the second baffle slides out or slides into the bottom of the vehicle body.

[0048] The adjusting assembly also includes two bearing seats 27, which are respectively arranged on the front and rear side surfaces of the first baffle, one of which is threadedly connected with a second screw 28, a second bevel gear 29 is fixed at the lower end of the second screw, a first bevel gear 30 is fixed at the front end of the second transmission shaft, and the first bevel gear and the second bevel gear are meshed; the other bearing seat is slidably connected with a slide bar 31, an axial slide groove is provided on the front end surface of the first baffle facing the second screw, the bearing seat threadedly connected with the second screw is slidably arranged in the slide groove, a spring 32 is connected between the bottom wall of the slide groove and the bearing seat, the bearing seat slidably connected with the slide bar is fixed on the rear end surface of the first baffle, the lower part of the second screw is rotatably connected to the side surface of the vehicle body, and the lower part of the slide bar is fixedly connected to the side surface of the vehicle body. The lower ends of the second screw and the slide bar are both spaced apart from the second baffle, so that the movement of the second baffle is not hindered.

[0049] The two bearing seats 27 have one inner side wall with internal threads and the other inner side wall with a smooth surface.

[0050] A block 33 is fixed on the vehicle body above the first baffle, and the block includes a horizontal side and vertical sides fixed at the front and rear ends of the horizontal side and extending downward. When the first baffle moves upward, the upper end of the first baffle can run between the two vertical sides of the block and contact the horizontal side. Through holes are correspondingly provided on the two vertical sides of the block, and a through hole that runs horizontally through the entire first baffle is provided at the upper end of the first baffle. When the first baffle contacts the horizontal side of the block, the through holes on the two vertical sides of the block and the through holes on the first baffle are on the same horizontal line, and the pins 34 can be inserted into the through holes of the block and the first baffle to achieve the limiting of the first baffle.

[0051] When the second transmission shaft rotates, the first bevel gear is driven to rotate, the first bevel gear drives the second bevel gear to rotate, and then drives the second screw to rotate, thereby driving the first baffle to move up and down. When the second transmission shaft rotates, the first baffle and the second baffle can be driven to move.

[0052] The operator can drive the first baffle to move upward or downward by rotating the second screw rod, and during the movement, the bearing seat slides on the slide rod.

[0053] When the second baffle is adjusted to the moving position and the height of the first baffle is not fully opened, the first baffle can be directly pulled to compress the spring. When the first baffle moves to the bottom of the block, the pin penetrates the block and the first baffle to limit the positions of the two.

[0054] It also includes a pressing assembly, which includes a first cross bar 35, the first cross bar 35 is fixed to the bottom of the second baffle, the second cross bar 36 is fixed to the outer end of the slide rail, and a first pressing plate 37 and a second pressing plate 38 are slidably connected between the two cross bars, that is, a slide groove is opened on the first pressing plate, and a slider is fixed to the second pressing plate, and the slider is installed in the slide groove, the first pressing plate is fixed on the first cross bar, and the second pressing plate is fixed on the second cross bar.

[0055] During the movement of the second baffle, the first pressing plate 37 is driven to move, so that the sum of the widths of the two pressing plates also changes accordingly, so that it is suitable for road surfaces with gaps of different widths. The user can also observe the width of the pressing plate and then the opening length of the second baffle, which makes it easier to align the gap width with the ground.

[0056] A method for using a repair device for highway maintenance comprises the following steps:

[0057] Operate the limit assembly to change the opening and closing angle of the cover body, and pour the mixed asphalt into the material box of the vehicle body;

[0058] The transmission component is controlled to change the position of the second baffle to change the size of the opening at the bottom of the box body. The transmission component can drive the adjustment component to open the first baffle to allow the raw materials in the box body to be discharged;

[0059] The vehicle body is moved, and the raw materials are guided out of the box body into the gaps on the ground.

[0060] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A road maintenance repair device, comprising a vehicle body (1), a running wheel (2) at the bottom of the vehicle body, a material box at the front half of the vehicle body, a cover (3) at the top of the material box having a rear end hinged to the top of the vehicle body, a groove (4) at the rear half of the vehicle body, and an opening of the groove located on the upper surface of the vehicle body; wherein: A handle (6) is provided at the rear of the vehicle body, and the handle is connected to the rear ends of two brackets (7), and the front ends of the two brackets are respectively hinged on the left and right walls of the vehicle body; It also includes a discharge port arranged at the bottom of the material box, a discharge assembly arranged on the vehicle body at the discharge port, the discharge assembly including a first baffle (17) arranged at the discharge port, slideways are arranged on the front and rear side walls of the discharge port at the bottom of the material box, and both sides of the first baffle are in sliding contact with the slideways on both sides of the discharge port; it also includes a box body (18), and the top of the box body is slidably connected to a top plate (19); The lower end of the box body is opened, the inner ends of the front side plate and the rear side plate of the box body are fixed to the vehicle body on both sides of the first baffle, and the inside of the box body is connected with the discharge port of the material box; The vehicle also includes a material blocking assembly, which includes a second baffle (20) provided at the opening at the lower end of the box body, the front and rear sides of the second baffle being slidably mounted in a slide rail (21), the slide rail being fixed on the lower surface of the vehicle body, and the size of the opening at the lower end of the box body being changeable by the sliding position of the second baffle in the slide rail; Two racks (22) are arranged on the second baffle plate located outside the box body, and the two racks are respectively fixed on the upper surfaces of the second baffle plate at the front and rear of the box body; The vehicle also includes a transmission assembly, which includes a vertical first transmission shaft (23), which is mounted on the rear of the vehicle body via a bearing, the lower end of the first transmission shaft is connected to the input end of a gear box (24), the gear box is fixed to the vehicle body, and a horizontal second transmission shaft (25) is mounted on the bottom of the vehicle body via a bearing, the rear end of the second transmission shaft is connected to the output end of the gear box, the front end of the second transmission shaft passes through the box body, and the second transmission shaft is respectively fixed with first gears (26) at positions corresponding to the two racks, and the two first gears are respectively meshed with the two racks; The invention also includes an adjustment component, which includes two bearing seats (27), which are respectively arranged on the front and rear side surfaces of the first baffle, one of which is threadedly connected to a second screw rod (28), a second bevel gear (29) is fixed to the lower end of the second screw rod, and a first bevel gear (30) is fixed to the front end of the second transmission shaft, and the first bevel gear and the second bevel gear are meshed; the other bearing seat is slidably connected to a slide rod (31), the bearing seat slidably connected to the slide rod is fixed to the rear end surface of the first baffle, an axial slide groove is provided on the front end surface of the first baffle facing the second screw rod, the bearing seat threadedly connected to the second screw rod is slidably arranged in the slide groove, the lower part of the second screw rod is rotatably connected to the side surface of the vehicle body, and the lower part of the slide rod is fixedly connected to the side surface of the vehicle body.

2. The road maintenance repair device according to claim 1, characterized in that: A block (33) is fixed on the vehicle body above the first baffle, and the block includes a horizontal side and vertical sides fixed at the front and rear ends of the horizontal side and extending downward. When the first baffle moves upward, the upper end of the first baffle can move between the two vertical sides of the block and contact the horizontal side. The two vertical sides of the block are correspondingly provided with through holes. The upper end of the first baffle is provided with a through hole that runs horizontally through the entire first baffle. When the first baffle contacts the horizontal side of the block, the through holes on the two vertical sides of the block and the through holes on the first baffle are on the same horizontal line. A latch (34) is inserted into the through holes of the block and the first baffle to achieve the limiting of the first baffle.

3. The road maintenance repair device according to claim 1, characterized in that: The material pressing assembly also includes a first cross bar (35), the first cross bar is fixed to the bottom of the second baffle, the second cross bar (36) is fixed to the outer end of the slide rail, and a first material pressing plate (37) and a second material pressing plate (38) are slidably connected between the two cross bars, that is, a slide groove is opened on the first material pressing plate, and a slider is fixed on the second material pressing plate, and the slider is installed in the slide groove, the first material pressing plate is fixed on the first cross bar, and the second material pressing plate is fixed on the second cross bar.

4. The road maintenance repair device according to claim 1, characterized in that: It also includes an operation limit assembly, which includes two support rods (8) respectively fixed on two brackets; Two bases (9) are symmetrically fixed on the top of the cover body, the front ends of the two first connecting rods (10) are rotatably connected to the front end tops of the two bases (9), the rear ends of the two first connecting rods are connected together through a cross bar (11), the rear parts of the two first connecting rods are placed on the support rod (8), the two bases are provided with sliding grooves, the two sliding grooves are slidably connected with the second connecting rod (12), the rear part of the second connecting rod is also provided with a sliding groove, the slider (13) is slidably connected in the sliding groove at the rear of the second connecting rod, the slider is provided with a threaded hole, the sliding groove at the rear of the second connecting rod is also provided with a first screw (14) installed in cooperation with the slider, the front end of the first screw is threadedly connected to the second connecting rod, and screwing the first screw can drive the slider to move forward and backward in the sliding groove of the second connecting rod; a first arc plate (15) and a second arc plate (16) are provided in the groove at the rear of the box body, the second arc plate is fixed on the front side wall of the groove, and the two sliders are rotatably connected to the two side surfaces of the first arc plate.

5. The road maintenance repair device according to claim 1, characterized in that: A spring (32) is connected between the bottom wall of the slide groove and the bearing seat threadably connected to the second screw rod.

6. The road maintenance repair device according to claim 1, characterized in that: Two bearing seats (27), one inner side wall of which has an internal thread, and the other inner side wall of which is a smooth surface.

7. The road maintenance repair device according to claim 1, characterized in that: A through hole (5) is provided on the rear side surface of the vehicle body, and the through hole is communicated with the groove of the vehicle body.

8. A method for using a repair device for highway maintenance, characterized by: The following steps are involved: Operate the limit assembly to change the opening and closing angle of the cover, and pour the mixed asphalt into the material box of the vehicle body; The transmission component is controlled to change the position of the second baffle to change the size of the opening at the bottom of the box body. The transmission component can drive the adjustment component to open the first baffle to allow the raw materials in the box body to be discharged; The vehicle body is moved, and the raw materials are guided out of the box body into the gaps on the ground.

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