Highway engineering maintenance device and maintenance method

Abstract

The present invention discloses a highway engineering maintenance device and a maintenance method, which belong to the technical field of highway film covering maintenance devices, wherein the highway engineering maintenance device includes a reel wound with a protective film, and storage boxes are provided at positions on both sides of the protective film. A plurality of pressure plates are stacked in the storage box, and a pressure plate is connected to one side of the storage box through a driving component. When the storage box moves to the side of the pressure plate pressed on the protective film, the pressure plate on one side of the storage box can fall above the pressure plate at the protective film; the cooperation of the protrusion and the slot can drive the two pressure plates that are clamped to each other to deflect, so that the pressure plate originally connected to the insertion rod is in a horizontal state after being flipped 90 degrees and presses the overlapping parts of the two protective films, and the pressure plate originally pressed on the protective film and in a horizontal state is flipped to a vertical state and plugged into the insertion rod.

Description

Technical Field

[0001] The present invention relates to the technical field of highway film covering maintenance devices, and in particular to a highway engineering maintenance device and a maintenance method. Background Art

[0002] After the concrete pavement is poured, it can gradually solidify and harden mainly because of the hydration of cement, and hydration requires appropriate temperature and humidity conditions. Therefore, in order to ensure that the concrete has suitable hardening conditions and its strength continues to increase, it is necessary to cover the poured concrete pavement with plastic film and then maintain the concrete pavement.

[0003] Chinese invention patent CN115110385B discloses a pavement concrete curing device for highway engineering construction. By providing a connecting device, it can solve the problem of traditional pavement concrete curing devices for highway engineering construction requiring manual transport of water and replenishment of water into the device during plastic film covering.

[0004] The above-mentioned device fixes the plastic film by evenly dispersing the soil on both sides of the plastic film. Although this method can fix the plastic film, it will affect the overlap between the two adjacent plastic films. In order to avoid this problem, it is necessary to redisperse the soil in the overlapping area of ​​the two plastic films for fixation, but this will undoubtedly cause waste of materials. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a highway engineering maintenance device and maintenance method to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a highway engineering maintenance device and maintenance method to solve the problem that the existing device proposed in the above background technology fixes the plastic film by evenly distributing the soil to the positions on both sides of the plastic film. Although this method can fix the plastic film, it will affect the overlap between adjacent plastic films.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a highway engineering maintenance device, comprising a reel wound with a protective film, storage boxes provided at both sides of the protective film, a plurality of pressure plates stacked in the storage boxes, and a pressure plate connected to one side of the storage box via a drive assembly;

[0008] When the storage box moves to the side of the pressure plate pressed on the protective film, the pressure plate on one side of the storage box can fall above the pressure plate at the protective film, so that the two pressure plates are perpendicular to each other and are locked. In the process of the pressure plate being driven to move by the driving assembly, the two pressure plates that are locked to each other can be flipped, so that the pressure plate originally on one side of the storage box can be flipped to a horizontal state and fall on the area where the two protective films overlap.

[0009] As a further solution of the present invention: the driving assembly includes a lifting block arranged on one side of the storage box and elastically connected to the storage box, a fixed plate is fixedly arranged on the outside of the lifting block, a slide is arranged on the side of the fixed plate close to the pressure plate, two sliding rods are fixedly arranged on the slide, and the sliding rods pass through the fixed plate and elastically cooperate with the fixed plate, an insertion rod is elastically connected to one end of the sliding rod close to the pressure plate, slots that cooperate with the insertion rod are provided on both side surfaces of the pressure plate, the slots are T-shaped, two protrusions are elastically connected to the outside of the insertion rod, and a plurality of notches that cooperate with the protrusions are provided on the front and rear side walls inside the slot.

[0010] As a further solution of the present invention: a card slot is provided on one side of the pressure plate where the slot is provided, the card slot is arranged along the length direction of the pressure plate, and the card slot and the slot are perpendicular to each other, and card strips are slidingly provided on the upper and lower sides of the pressure plate. When the two pressure plates are in a state perpendicular to each other, the card strip on one of the pressure plates can be inserted into the card slot on the other pressure plate, so that the two pressure plates are clamped to each other.

[0011] As a further solution of the present invention: a through slot is provided on the insertion rod, the protrusion slides at both ends of the through slot, and a first electromagnet is fixedly provided at the center of the through slot, the protrusion is elastically connected to the first electromagnet, and a magnetic piece is fixedly embedded in one end of the protrusion close to the first electromagnet. When the first electromagnet is in an energized state, the first electromagnet has the same magnetic pole on the side opposite to the magnetic piece.

[0012] As a further solution of the present invention: a bottom plate is provided below the reel, and a bracket for supporting the reel is fixedly provided on the bottom plate.

[0013] As a further solution of the present invention: a cross bar is fixedly mounted on the bracket, two screw rods are threadedly connected to the cross bar, and the screw rods pass through one end of the cross bar and are rotatably connected to the storage box.

[0014] As a further solution of the present invention: a first spring is sleeved on the outer side of the slide bar, and the first spring is located between the slide plate and the fixed plate.

[0015] As a further solution of the present invention: a convex strip is fixedly provided on the outer peripheral wall of the slide rod, and the convex strip passes through the fixed plate and is slidably engaged with the fixed plate.

[0016] As a further solution of the present invention: one end of the card slot opening extends inwardly to form a card connection portion, and an end of the card strip away from the pressure plate is provided with an inserting portion that cooperates with the card connection portion.

[0017] A method for maintenance using the above-mentioned highway engineering maintenance device includes the following steps: covering the road surface with a protective film; pressing the protective film by releasing the pressure plates in the storage box one by one; when the storage box moves to the side of the pressure plate at the protective film, the pressure plate on one side of the storage box can be engaged with the pressure plate at the protective film, so that the driving component can drive the pressure plate to move and cause the two mutually engaged pressure plates to flip over, and the pressure plate originally on one side of the storage box flips to the area where the two protective films overlap.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: in the process of pulling the slide, the cooperation between the protrusion and the slot can drive the two pressure plates that are clamped to each other to deflect, so that the pressure plate originally connected to the insertion rod is in a horizontal state after flipping 90° and presses the overlapping part of the two protective films, and the pressure plate that was originally pressed on the top of the protective film and in a horizontal state is flipped to a vertical state and plugged with the insertion rod, and the above process is repeated. During the movement of the device, the pressure plate on one side of the storage box can be clamped with the pressure plate pressed on the protective film, and the two pressure plates clamped to each other can exchange positions after flipping 90°. In this process, the overlapping area of ​​the two protective films can be pressed, thereby improving the stability of the protective film covering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the rope loop structure of the present invention;

[0022] Figure 3 This invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] Figure 4 It is a schematic diagram of the position of the baffle of the present invention;

[0024] Figure 5 It is a schematic diagram of the two pressing plates of the present invention in a vertical state;

[0025] Figure 6 It is a schematic diagram of the structure of the drive assembly of the present invention;

[0026] Figure 7 is a schematic diagram of the overlapping area of ​​two protective films of the present invention;

[0027] Figure 8 This invention Figure 7 A schematic diagram of the enlarged structure at point B;

[0028] Figure 9 It is a schematic diagram of the structure of the insertion rod and the bump of the present invention;

[0029] Figure 10 This invention Figure 9 Schematic diagram of the enlarged structure at C;

[0030] Figure 11 This is a schematic diagram of the cooperation between the card strip and the card slot of the present invention;

[0031] Figure 12 It is a schematic diagram of the structure of the first electromagnet of the present invention;

[0032] Figure 13 It is a schematic diagram of the limit rod structure of the present invention;

[0033] Figure 14 This is a schematic diagram of the three-dimensional structure of the baffle of the present invention;

[0034] Figure 15 3 is a distribution diagram of the storage box of the present invention relative to the protective film.

[0035] In the figure: 1. bottom plate; 101. bracket; 2. storage box; 201. screw; 3. pull rope; 4. traction rope; 5. positioning roller; 6. fixed frame; 7. protective film; 8. rope loop; 9. pressure plate; 901. slot; 9011. notch; 902. card slot; 9021. clamping part; 903. limiting hole; 904. card strip; 9041. stop part; 9042. plug-in part; 905. accommodating groove; 10. lifting block; 11. slide bar; 1101. convex strip; 12. slide plate; 13. fixed plate; 14. stop bar; 1401. slide bar; 15. plug-in rod; 16. convex block; 1601. inclined plane; 17. first electromagnet; 18. limiting rod; 19. second electromagnet. DETAILED DESCRIPTION

[0036] like Figures 1-10 As shown, a highway engineering maintenance device and maintenance method includes a base plate 1, a reel is provided above the base plate 1, and a protective film 7 is wound around the outside of the reel. Figure 1 As shown, a bracket 101 is fixedly installed on the top of the base plate 1, the reel is rotatably installed between the two brackets 101, and the reel and the bracket 101 are detachably connected. A positioning roller 5 is provided on one side of the base plate 1, and a side guard bar is fixedly installed on the bracket 101, so that the positioning roller 5 is rotatably installed between the guard bars on both sides. In actual use, one end of the protective film 7 is pulled out and passed under the positioning roller 5, and then a heavy object is used to press one end of the protective film 7 to the road surface. A pull rod is fixedly installed on the top of the base plate 1. When the pulling device is moved as a whole by the pull rod, the protective film 7 can be unwound from the reel and laid on the ground, thereby preventing moisture on the road surface from evaporating.

[0037] Of course, in order to prevent the protective film 7 from being blown away by strong wind, pressure plates 9 can be placed on both sides of the protective film 7 to fix it. Therefore, this solution installs a storage box 2 on one side of the bottom plate 1, and multiple pressure plates 9 are stacked horizontally in the storage box 2. Figure 1 As shown, when the protective film 7 passes through the positioning roller 5 and is attached to the ground, the storage box 2 is located above the protective film 7, and the multiple pressure plates 9 in the storage box 2 can fall one by one from bottom to top. Therefore, the pressure plates 9 can press the protective film 7 to prevent it from being blown away by strong winds.

[0038] Although the above method can press the two sides of the protective film 7 tightly, during the laying process of the protective film 7, there needs to be an overlapping portion between the two adjacent protective films 7 to ensure complete coverage of the road surface. Therefore, when the pressure plates 9 are arranged on both sides of the protective film 7, it is bound to affect the covering effect of the protective film 7. Based on this, the present solution further arranges a pressure plate 9 on the side of the storage box 2 away from the positioning roller 5, and the storage box 2 is connected to the pressure plate 9 through a driving assembly. Figure 15 The figure shows the positions of two storage boxes 2 on one side of the bottom plate 1. One of the storage boxes 2 can be placed at the edge of the protective film 7 so that the pressing plate 9 dropped from the storage box 2 can press the edge of the protective film 7. The other storage box 2 is placed at a distance S from the side of the protective film 7. Figure 15 The area shown by S is the area where the two protective films 7 overlap when covered. When the pressure plate 9 on the outside of the storage box 2 moves to the top of the pressure plate 9 pressed against the protective film 7, the two pressure plates 9 can be in a vertical state and engage with each other. Figure 5 As shown;

[0039] The driving assembly can drive the pressure plate 9 on one side of the storage box 2 to move in the vertical direction and the horizontal direction. Specifically, when the pressure plate 9 on one side of the storage box 2 moves to the top of the pressure plate 9 at the protective film 7 and is engaged with it, the driving assembly drives the pressure plate 9 on one side of the storage box 2 to move, which can cause the two mutually engaged pressure plates 9 to flip over, so that the pressure plate 9 originally on the side of the storage box 2 can be flipped to a horizontal state and located at the S area, thereby pressing the two overlapping protective films 7 tightly.

[0040] Furthermore, Figure 7 The schematic diagram of two pressing plates 9 being perpendicular to each other is shown in FIG. Figure 7 The horizontal pressure plate 9 is outside the S area. When the vertical pressure plate 9 is moved by the driving assembly, the two pressure plates 9 that are locked together can be flipped 90°, so that the pressure plate 9 that was originally in the vertical state can be flipped to the S area and maintain a horizontal state, while the pressure plate 9 that was originally pressed on the protective film 7 and in a horizontal state is flipped to a vertical state and connected to the driving assembly on one side of the storage box 2.

[0041] The driving assembly includes a lifting block 10 disposed on a side of the storage box 2 away from the positioning roller 5, Figure 6 As shown, the storage box 2 is provided with a groove on the side thereof for slidingly cooperating with the lifting block 10, so that the lifting block 10 can move in the vertical direction relative to the storage box 2, and a fixing plate 13 is fixedly provided on the outside of the lifting block 10. Figure 6 As shown, a slide plate 12 is provided on one side of the fixed plate 13 close to the pressure plate 9, and two slide rods 11 are provided on the slide plate 12, and the slide rods 11 pass through the slide plate 12 and are fixedly connected thereto. In addition, the slide rods 11 pass through the fixed plate 13 and slide with it;

[0042] Combine Figure 6 、 Figure 9 As shown, the end of the slide rod 11 close to the pressure plate 9 is provided with an insertion rod 15. Specifically, an extrusion spring is fixedly provided between the inner end surface of the insertion rod 15 and the slide rod 11. Slots 901 are provided on both the left and right sides of the pressure plate 9. The cross section of the slot 901 is set to be T-shaped, and the outer side of the insertion rod 15 is elastically connected to two protrusions 16. The two protrusions 16 are provided at the end of the insertion rod 15 away from the slide rod 11 and are symmetrically distributed relative to the axis center of the insertion rod 15. Figure 9 As shown, a plurality of slots 9011 are evenly provided on the front and rear side walls inside the slot 901. Specifically, when the protrusion 16 at one end of the insertion rod 15 is inserted into the slot 901 and cooperates with the slot 9011, the pressure plate 9 is locked with the insertion rod 15. At this time, the pressure plate 9 is stably maintained on one side of the storage box 2.

[0043] Combined with 3, Figure 10 As shown, in order to clamp the pressure plate 9 on the protective film 7 with the pressure plate 9 on one side of the storage box 2, this solution has a clamping groove 902 on both the left and right sides of the pressure plate 9. Both ends of the clamping groove 902 extend to the end surface of the pressure plate 9, and L-shaped clamping strips 904 are slidably provided on the upper and lower sides of the pressure plate 9.

[0044] Reference Figure 8 As shown, one end of the opening of the slot 902 extends inward to form a clamping portion 9021, and the end of the clamping strip 904 away from the pressure plate 9 is configured as a horizontal plug-in portion 9042. Figure 8 In the embodiment, the end of the card strip 904 away from the pressure plate 9 is inserted into the card slot 902 and the plug-in portion 9042 cooperates with the plug-in portion 9042. At this time, when the pressure plate 9 is pulled by the insertion rod 15, the two pressure plates 9 that are clamped to each other can be flipped synchronously.

[0045] Working principle:

[0046] like Figures 1-13As shown, in actual use, the device is pulled as a whole by the pull rod to move, so that the protective film 7 covers the road surface, and the pressure plates 9 in the storage box 2 can be released one by one, and the protective film 7 can be pressed tightly by the pressure plates 9. For details, refer to Figure 15 As shown, the pressure plate 9 released from one storage box 2 is pressed against the edge of the protective film 7, while the pressure plate 9 released from the other storage box 2 is at a distance S from the edge of the protective film 7, thereby providing an overlapping area for the two adjacent protective films 7;

[0047] When the storage box 2 moves to the side of the pressure plate 9 pressed against the protective film 7, the lifting block 10 drives the fixed plate 13 to move upward, so that the pressure plate 9 connected with the insertion rod 15 can fall above the pressure plate 9 at the protective film 7. Then, the slide plate 12 is pulled to drive the slide bar 11 and the insertion rod 15 to move, so that the pressure plate 9 connected with the insertion rod 15 can move horizontally relative to the pressure plate 9 at the protective film 7. Figure 7-Figure 8 As shown, as the insertion rod 15 drives the pressure plate 9 on one side of the storage box 2 to gradually move, the card strip 904 on the pressure plate 9 will be aligned with the card slot 902 on the pressure plate 9 at the protective film 7, refer to Figure 8 As shown, when the card strip 904 falls into the card slot 902 due to gravity and the plug-in portion 9042 cooperates with the plug-in portion 9021, the two pressure plates 9 can be engaged with each other, and the two pressure plates 9 are in a mutually perpendicular state. At this time, in the process of pulling the slide 12, the cooperation between the protrusion 16 and the slot 901 can drive the two mutually engaged pressure plates 9 to deflect. According to the above analysis, the pressure plate 9 originally connected to the insertion rod 15 is in a horizontal state after turning 90° and falls to the S area, thereby pressing the overlapping part of the two protective films 7, and the protrusion 16 can in this process. Slide out of the slot 901, and the pressure plate 9 that was originally pressed on the top of the protective film 7 and in a horizontal state will flip to a vertical state and be plugged into the insertion rod 15, so that the pressure plate 9 in the vertical state can be moved synchronously with the storage box 2 through the insertion rod 15. Repeat the above process. During the movement of the device, the pressure plate 9 on one side of the storage box 2 can be engaged with the pressure plate 9 pressed on the protective film 7, and the two pressure plates 9 engaged with each other can exchange positions after flipping 90°. In this process, the overlapping area of ​​the two protective films 7 can be pressed, thereby improving the stability of the coverage of the protective film 7.

[0048] like Figure 1-Figure 3 As shown, in order to drive the lifting block 10 to move, the present invention is provided with a traction rope 4 and a pull rope 3. Specifically, one end of the pull rope 3 is fixedly connected to the slide plate 12, and the pull rope 3 passes through the fixed plate 13 and slides with it, while one end of the traction rope 4 is fixedly connected to the top surface of the lifting block 10, and the other end of the traction rope 4 passes upward through the storage box 2 and slides with it. Figure 2As shown, a rope loop 8 is fixedly installed on the pull rod, and the traction rope 4 and the pull rope 3 are both passed through the rope loop 8 and slidably cooperated with it. The traction rope 4 and the pull rope 3 are both fixedly provided with a pull ring at one end passing through the rope loop 8, which is convenient for the staff to operate. Of course, pulleys can be arranged at the turning points of the traction rope 4 and the pull rope 3 to ensure stable movement of the traction rope 4 and the pull rope 3.

[0049] Reference Figure 12 As shown, a through slot is provided on the insertion rod 15, and the above-mentioned protrusion 16 slides at the two end positions of the through slot, and a first electromagnet 17 is fixedly provided at the center of the through slot, and a spring is fixedly provided between the protrusion 16 and the shell outside the first electromagnet 17. In addition, a magnetic piece (not shown in the figure) is fixedly embedded in the end of the protrusion 16 close to the first electromagnet 17. When the first electromagnet 17 is in the energized state, the first electromagnet 17 and the side opposite to the magnetic piece have the same magnetic pole. In actual use, when the staff controls the first electromagnet 17 to be in the energized state, the repulsive force between the first electromagnet 17 and the magnetic piece can cause the protrusion 16 to pop outward, so that one end of the protrusion 16 is inserted into the slot 9011. At this time, the insertion rod 15 can drive the pressure plate 9 to move in the vertical and horizontal directions. Therefore, when the storage box 2 is close to the protective film When the two pressure plates 9 plugged into each other are flipped over, the pull rope 3 can be released to reset the slide 12 and the plug rod 15. Figure 12 As shown, the end of the protrusion 16 located on the outside of the insertion rod 15 is provided with a bevel 1601, so that when the protrusion 16 is inserted into the slot 901, the bevel 1601 can contact the side edge of the slot 901, thereby compressing the protrusion 16, which is conducive to the protrusion 16 entering the slot 901, and then drives the entire device to move, so that the card strip 904 on the two pressure plates 9 is separated from the card slot 902.

[0050] Reference Figure 1As shown, a roller is fixedly installed at the bottom of the base plate 1, and a cross bar is fixedly installed on the bracket 101. Two screws 201 are threadedly connected to the cross bar, and the screw 201 passes through one end of the cross bar and is rotatably connected to the storage box 2. Through this structure, the position of the storage box 2 can be adjusted, so that the pressure plate 9 in one of the storage boxes 2 can fall to the edge of the protective film 7, and the pressure plate 9 in the other storage box 2 can fall to a position at a distance S from the edge of the protective film 7.

[0051] The storage box 2 is fixedly provided with a fixing frame 6 on one side close to the positioning roller 5, and a second electromagnet 19 is fixedly provided on the inner end surface of the fixing frame 6. Figure 13 As shown, a limit rod 18 is also slidably provided in the fixed frame 6. The limit rod 18 is a T-shaped structure. One end of the limit rod 18 passes through the storage box 2 and slides with it. A limit spring is fixed between the limit rod 18 and the storage box 2. The limit rod 18 is made of iron and is combined with the storage box 2. Figure 6 、 Figure 13 As shown, a limiting hole 903 that cooperates with the limiting rod 18 is provided at the end face of the pressure plate 9. During actual use, the limiting rod 18 is located at the position of the bottom pressure plate 9. When the second electromagnet 19 is energized and adsorbs the limiting rod 18 so that one end of the limiting rod 18 moves out of the limiting hole 903, the bottom pressure plate 9 can fall out of the storage box 2 and fall onto the protective film 7. Of course, when the bottom pressure plate 9 moves out of the storage box 2, the penultimate pressure plate 9 can move to the limiting rod 18 and then be locked by the cooperation between the limiting rod 18 and the limiting hole 903.

[0052] Reference Figure 3 As shown, a first spring is sleeved on the outside of the slide bar 11 , and the first spring is located between the slide plate 12 and the fixed plate 13 . When the pull rope 3 is pulled, the first spring can be compressed.

[0053] A tension spring is fixedly provided between the inner bottom surface of the groove and the lifting block 10. In actual use, the lifting block 10 and the groove can both be T-shaped structures to improve the stability of the cooperation between the lifting block 10 and the groove.

[0054] Reference Figure 4 As shown, a stop bar 14 is provided on the side of the storage box 2 away from the positioning roller 5. The stop bar 14 can move in the vertical direction relative to the storage box 2. Specifically, a slide bar 1401 is fixedly installed on the stop bar 14, and a slide groove (not shown in the figure) is provided on the side of the storage box 2 to slide with the slide bar 1401. Similarly, in order to ensure the stability of the cooperation between the two, the slide bar 1401 and the slide groove are both T-shaped structures. Figure 4 、 Figure 14As shown, a second spring is fixedly arranged between the inner bottom surface of the slide groove and the slide bar 1401. In actual use, the blocking bar 14 can resist the pressure plate 9 on the protective film 7. Therefore, when the insertion rod 15 pulls the pressure plate 9, the two pressure plates 9 inserted into each other can flip more stably.

[0055] Reference Figure 3 、 Figure 9 As shown, a ridge 1101 is fixedly provided on the outer peripheral wall of the slide rod 11 , and the ridge 1101 passes through the fixed plate 13 and slides with it, so that the slide rod 11 cannot rotate relative to the fixed plate 13 .

[0056] Reference Figure 10 As shown, the pressure plate 9 is provided with a receiving groove 905 for accommodating the card strip 904. When the card strip 904 is received into the receiving groove 905, the card strip 904 is flush with the side surface of the pressure plate 9. The end of the card strip 904 located inside the pressure plate 9 is integrally formed with a stop portion 9041. The cooperation between the stop portion 9041 and the end face of the receiving groove 905 can prevent the card strip 904 from being separated from the pressure plate 9.

Claims

1. A highway engineering maintenance device, comprising a reel wound with a protective film, storage boxes disposed on both sides of the protective film, a plurality of pressure plates stacked in the storage boxes, and characterized in that: One side of the storage box is connected to a pressing plate via a driving assembly; When the storage box moves to the side of the pressure plate pressed on the protective film, the pressure plate on one side of the storage box can fall onto the pressure plate at the protective film, so that the two pressure plates are perpendicular to each other and locked; The driving assembly includes a lifting block arranged on one side of the storage box and elastically connected to the storage box, a fixed plate is fixedly provided on the outer side of the lifting block, a slide is provided on the side of the fixed plate close to the pressure plate, two sliding rods are fixedly provided on the slide plate, and the sliding rods pass through the fixed plate and elastically cooperate with the fixed plate, one end of the sliding rod close to the pressure plate is elastically connected to the insertion rod, slots that cooperate with the insertion rod are provided on both side surfaces of the pressure plate, the slots are T-shaped, two protrusions are elastically connected to the outer side of the insertion rod, and a plurality of notches that cooperate with the protrusions are provided on the front and rear side walls of the slot; The side of the pressing plate where the slot is opened is provided with a card slot, which is arranged along the length direction of the pressing plate and is perpendicular to the slot. Card strips are slidably provided on the upper and lower sides of the pressing plate. When the two pressing plates are in a mutually perpendicular state, the card strip on one pressing plate can be inserted into the card slot on the other pressing plate, so that the two pressing plates are clamped to each other. A through slot is provided on the insertion rod, the protrusion slides at both ends of the through slot, and a first electromagnet is fixedly provided at the center of the through slot, the protrusion is elastically connected to the first electromagnet, and a magnetic sheet is fixedly embedded at one end of the protrusion close to the first electromagnet. When the first electromagnet is in an energized state, the first electromagnet and the side opposite to the magnetic sheet have the same magnetic pole.

2. A highway engineering maintenance device according to claim 1, characterized in that: A bottom plate is provided below the reel, and a bracket for supporting the reel is fixedly provided on the bottom plate.

3. A highway engineering maintenance device according to claim 2, characterized in that: A cross bar is fixedly mounted on the bracket, and two screw rods are threadedly connected to the cross bar. The screw rod passes through one end of the cross bar and is rotatably connected to the storage box.

4. A highway engineering maintenance device according to claim 1, characterized in that: A first spring is sleeved on the outer side of the slide bar, and the first spring is located between the slide plate and the fixed plate.

5. A highway engineering maintenance device according to claim 1, characterized in that: A convex strip is fixedly provided on the outer peripheral wall of the slide rod, and the convex strip passes through the fixing plate and is slidably matched with the fixing plate.

6. A highway engineering maintenance device according to claim 1, characterized in that: One end of the card slot opening extends inwardly to form a card connection portion, and one end of the card strip away from the pressure plate is provided with an inserting portion that matches the card connection portion.

7. A method for performing maintenance using the highway engineering maintenance device according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: covering the road surface with a protective film; pressing the protective film by releasing the pressure plates in the storage box one by one; and when the storage box moves to one side of the pressure plate at the protective film, the pressure plate on one side of the storage box can be engaged with the pressure plate at the protective film.

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