A bridge deck concrete coating robot with an automatic coating and hot melt cutting mechanism

Abstract

This invention relates to the field of bridge deck construction equipment technology, specifically to a bridge deck concrete coating robot with an automatic coating and hot-melt cutting mechanism. The robot includes a mobile trolley and a coating device located at its rear. The coating device includes a pair of connecting parts, a drive unit located inside it, a placement part driven by the drive unit, a connecting rod and a protective film located between the pair of placement parts, and a cutting part located outside the connecting parts. This bridge deck concrete coating robot with an automatic coating and hot-melt cutting mechanism uses an electric actuator to drive a square plate, causing the square frame to shift. By using a rack and pinion to engage the end teeth, the support is lifted and flipped, lifting the protective film from the concrete surface. Simultaneously, the rotation of the end teeth engages the shaft teeth, driving the cam shaft to rotate the long rod and the hot-melt cutter at the end downwards, completing the hot-melt cutting of the lifted portion of the film. This achieves an integrated operation of automatic lifting and synchronous precise cutting of the protective film during the adjustment of the mobile trolley angle.

Description

Technical Field

[0001] This invention relates to the field of bridge deck construction equipment technology, and more specifically, to a bridge deck concrete coating robot with an automatic coating and hot melt cutting mechanism. Background Technology

[0002] A concrete film covering machine is a highly efficient auxiliary equipment for road and floor construction. It is mainly used for automatic film covering and curing operations after concrete pouring. It usually has a self-propelled function and is easy to operate. Its core components are the support frame that carries the curing film roll and the film pressing device. During operation, the machine moves at a uniform speed along the concrete surface and automatically lays the rolled plastic curing film flat on the fresh concrete. The film is then pressed tightly onto the surface by the pressure roller or its own weight, which effectively reduces moisture evaporation and inhibits the formation of surface cracks. This is crucial for ensuring the quality of early curing of concrete and improving its strength and durability.

[0003] Patent application number CN202510733073.X discloses a concrete curing device, including a fixed frame, a bogie rotatably connected to the bottom of the fixed frame, a fixed cylinder fixedly mounted on the inner wall of the bogie, a positive and negative threaded rod rotatably sleeved on the inner wall of the fixed cylinder, and a steering wheel fixedly mounted on the side of the positive and negative threaded rod passing through the inner wall of the bogie. Through the cooperation of the film-coating roller and the stop frame, the moving motor drives the docking cylinder to rotate through the synchronous wheel, thereby driving the film-coating roller to rotate, and then using the film-coating roller to assist in the release of the film. While assisting in the limiting of the film, the film can be stably unfolded.

[0004] Existing concrete covering equipment lacks an effective membrane handling mechanism when adjusting the travel angle. This often results in the protective membrane being dragged directly by the moving vehicle, easily causing tearing or displacement of the membrane and affecting the covering quality. Furthermore, the cutting process relies on manual assistance with auxiliary tools, which is not only inefficient and produces uneven cut edges, but also requires frequent work interruptions, severely restricting the continuity of the covering operation. Secondly, when the protective membrane is depleted and needs to be replaced, existing equipment generally lacks a quick-release mechanism for the roll. Operators must laboriously and manually disassemble the roller or related components to remove the empty roll and install a new one. The entire replacement process is cumbersome and time-consuming, significantly extending equipment downtime and greatly increasing the labor intensity of operators.

[0005] In view of this, we propose a bridge deck concrete coating robot with an automatic coating and hot melt cutting mechanism. Summary of the Invention

[0006] The purpose of this invention is to provide a bridge deck concrete coating robot with an automatic coating and hot-melt cutting mechanism. The robot uses an electric push rod to drive a square plate to move the square frame. By using a rack and pinion to mesh with the end teeth, the support is lifted and flipped. At the same time, the end teeth rotate and mesh with the shaft teeth, driving the cam shaft to drive the long rod and the hot-melt knife at the end to flip downward, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A bridge deck concrete coating robot with an automatic coating and hot melt cutting mechanism includes a mobile trolley and a coating device located at its rear. The coating device includes a pair of connecting parts, a drive part located inside it, a placement part driven by the drive part, a connecting rod and a protective film located between the pair of placement parts, and a cutting part located outside the connecting parts.

[0009] The drive unit includes an electric actuator, a round rod driven by it, a square plate and a first spring disposed at the end and outside of the round rod, a square frame sleeved on the outside of the square plate, and a pair of racks disposed on the bottom surface of the square plate.

[0010] This setting allows the electric actuator to drive the square frame to move through the square plate. After the square frame is limited, the square plate can compress the first spring and continue to move forward.

[0011] The placement part includes a bracket, an end tooth at its top, a sliding plate driven by a square plate, a transmission assembly inside the bracket, a slider sliding inside the bracket, and a rotating wheel at its end. The transmission assembly includes a connecting rod, and the slider has a guide groove inside.

[0012] This setting uses a rack and pinion meshing end teeth to drive the bracket to lift up. When the square plate squeezes the first spring to move forward, it causes the slide plate to move along with it and pulls the transmission group, allowing the connecting rod to move along the guide groove, causing the slider to move to the right and allowing the rotating wheel to move out of the inner cylinder of the protective film.

[0013] The cutting section includes a pair of long rods and a hot melt blade connected between the pair of long rods;

[0014] This feature allows the long rod to flip when the support is raised, using a hot melt knife to cut the protective film.

[0015] In the technical solution of the present invention, the connecting part includes a connecting frame that is fixedly connected to the rear wall support of the mobile trolley by bolts and a limiting frame that is welded and fixed to the inner wall of the connecting frame and has a concave cross section. Sliding grooves are provided on the inner walls of both the left and right ends of the connecting frame.

[0016] This setup, via a connecting frame, allows the drive unit and cutting unit to move with the mobile trolley, while the protective film is automatically laid on the concrete.

[0017] In the technical solution of the present invention, the electric actuator is fixedly connected to the inner wall of the connecting frame by screws, the round rod is snapped and fixed to the end of the electric actuator telescopic rod, the square plate is snapped and fixed to the end of the round rod, and the two ends of the first spring are welded and fixed to the outer wall of the square plate and the inner wall of the square frame, respectively. The elastic force provided by the first spring pushes the square plate to move backward.

[0018] In the technical solution of the present invention, the square frame is slidably connected to the inside of the connecting frame, and the outer walls of the left and right ends of the square frame are integrally formed with limiting protrusions that are slidably connected to the inside of the slide groove. The rack is welded and fixed to the bottom surface of the square frame.

[0019] The above setup limits the movement range of the box. In conjunction with the first spring, after the box has completed its displacement, the square plate can continue to move forward and drive the structure inside the placement section to move, thus achieving power transmission.

[0020] In the technical solution of the present invention, the bracket has an integrally formed partition inside, and the bottom end of the bracket has a through groove that runs through the left and right and provides a sliding range for the slider. The end teeth are snapped and fixed to the outside of the convex shaft at the top of the bracket.

[0021] In the technical solution of the present invention, the sliding plate is slidably connected to the inside of the limiting frame, and a stop rod is welded and fixed on the convex plate at the top of the sliding plate. The stop rod extends into the inside of the square frame and its horizontal height is the same as that of the square plate.

[0022] In the technical solution of the present invention, the transmission assembly further includes a transmission rod slidably connected inside the partition, a concave frame snapped and fixed to the bottom end of the transmission rod, and a limiting plate welded to the top end of the transmission rod, wherein the connecting rod is snapped and fixed to the inner wall of the concave frame.

[0023] In the technical solution of the present invention, a connecting rope is adhered between the limiting plate and the sliding plate, and a second spring is sleeved on the outer side of the transmission rod. The elastic force provided by the second spring pushes the concave frame to move downward, and the rotating wheel is rotatably connected to the convex shaft end of the outer wall of the slider.

[0024] The above setup utilizes a single drive source, an electric actuator, to achieve rapid and automated removal of the protective film roll, eliminating the need for laborious disassembly or operation of complex mechanisms and simplifying the film replacement process.

[0025] In the technical solution of the present invention, the two ends of the connecting rod are respectively snapped and fixed to the outer side of the two end bracket convex shafts, and the cylindrical part inside the protective film is sleeved on the outside of the rotating wheel.

[0026] This design utilizes a connecting rod to ensure the synchronous movement of a pair of placement units.

[0027] In the technical solution of the present invention, the cutting part further includes a convex shaft that is snapped onto the bottom end of the long rod and rotatably connected to the inside of the connecting frame, and a shaft tooth that is snapped onto and fixed on the outer wall of the convex shaft and meshes with the end tooth. The hot melt knife is fixedly connected to the end of the long rod by screws.

[0028] This feature enables the automatic lifting and simultaneous precise cutting of the protective film during the adjustment of the mobile trolley angle, without the need for manual intervention or additional tools, thus improving the continuity of the film coating operation.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. This bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism uses an electric actuator to drive a square plate to move the frame. By using a rack and pinion to mesh with the end teeth, the support is lifted and flipped, lifting the protective film from the concrete surface. At the same time, the rotation of the end teeth meshes with the shaft teeth, driving the cam shaft to drive the long rod and the hot-melt cutter at the end to flip downward, completing the hot-melt cutting of the lifted part of the film. This avoids dragging the film when the moving trolley turns, and realizes the integrated operation of automatic lifting and synchronous precise cutting of the protective film during the angle adjustment of the moving trolley. No manual intervention or additional tools are required, which significantly improves the continuity of the coating operation and the cutting quality.

[0031] 2. This bridge deck concrete coating robot with automatic film covering and hot-melt cutting mechanism, when the protective film is exhausted and needs to be replaced, uses the contact between the limiting protrusion and the front end of the slide as a trigger point to drive the electric push rod to move the square plate forward and push the abutment rod to drive the slide plate. Through the connecting rope, the transmission group is pulled, forcing the slider to move laterally in the support through groove, allowing the rotating wheel to move out of the inner cylinder of the protective film. This realizes the rapid and automated removal of the protective film roll, allowing the operator to directly replace it by simply holding a new protective film roll. This simplifies the film replacement process, shortens the downtime for replacement, and reduces the labor intensity of the operators. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the coating device in this invention;

[0034] Figure 3 This is a partial cross-sectional schematic diagram of the coating device in this invention;

[0035] Figure 4 This is a cross-sectional schematic diagram of the connecting part in this invention;

[0036] Figure 5 This is a schematic diagram of the drive unit in the present invention;

[0037] Figure 6 This is a cross-sectional schematic diagram of the placement part in this invention;

[0038] Figure 7 This is a cross-sectional schematic diagram of the support structure in this invention;

[0039] Figure 8 This is a schematic diagram of the transmission assembly in this invention;

[0040] Figure 9 This is a partial structural diagram of the placement part in the present invention;

[0041] Figure 10 This is a schematic diagram of the cutting part in this invention;

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Mobile cart;

[0044] 200. Coating device; 210. Connecting part; 211. Connecting frame; 2110. Slide groove; 212. Limiting frame; 220. Driving part; 221. Electric actuator; 222. Round rod; 223. Square plate; 224. First spring; 225. Square frame; 2250. Limiting protrusion; 226. Rack; 230. Placement part; 231. Support; 2310. Partition; 2311. Through groove; 232. End tooth; 233. 234. Slide plate; 235. Support rod; 236. Transmission assembly; 237. Transmission rod; 238. Concave frame; 239. Connecting rod; 200. Limiting plate; 201. Connecting rope; 202. Second spring; 230. Slider; 231. Guide groove; 240. Rotary wheel; 251. Connecting rod; 252. Cutting part; 253. Long rod; 254. Convex shaft; 255. Shaft tooth; 255. Hot melt knife; 260. Protective film. Detailed Implementation

[0045] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0046] Please see Figures 1-4 As shown, this embodiment provides a technical solution:

[0047] A bridge deck concrete coating robot with an automatic coating and hot melt cutting mechanism includes a mobile trolley 100 and a coating device 200 located at its rear. The coating device 200 includes a pair of connecting parts 210, a drive part 220 located inside it, a placement part 230 driven by the drive part 220, a connecting rod 240 located between the pair of placement parts 230, a protective film 260, and a cutting part 250 located outside the connecting parts 210.

[0048] Specifically, the connecting part 210 includes a connecting frame 211 that is fixedly connected to the rear wall support of the mobile trolley 100 by bolts, and a limiting frame 212 that is welded and fixed to the inner wall of the connecting frame 211 and has a concave longitudinal section. Sliding grooves 2110 are provided on the inner walls of both the left and right ends of the connecting frame 211.

[0049] Furthermore, the connecting frame 211 is used to fix the drive unit 220 and the cutting unit 250 to the rear support of the mobile trolley 100, the slide 2110 is used to limit the movement range of the internal structure in the drive unit 220, and the limiting frame 212 is used to limit the movement range of the internal structure in the placement unit 230. This arrangement, through the connecting frame 211, allows the drive unit 220 and the cutting unit 250 to move with the mobile trolley 100, and allows the protective film 260 to be automatically laid on the concrete.

[0050] Please see Figures 1-5 As shown, in this embodiment, the driving unit 220 includes an electric actuator 221, a round rod 222 driven by it, a square plate 223 and a first spring 224 disposed at the end and outside of the round rod 222, a square frame 225 sleeved on the square plate 223, and a pair of racks 226 disposed on the bottom surface of the square plate 223. The electric actuator 221 drives the square frame 225 to move through the square plate 223. After the square frame 225 is limited, the square plate 223 can compress the first spring 224 to move forward continuously.

[0051] Specifically, the electric actuator 221 is fixedly connected to the inner wall of the connecting frame 211 by screws, the round rod 222 is snapped and fixed to the end of the telescopic rod of the electric actuator 221, the square plate 223 is snapped and fixed to the end of the round rod 222, and the two ends of the first spring 224 are welded and fixed to the outer wall of the square plate 223 and the inner wall of the square frame 225 respectively. The elastic force provided by the first spring 224 pushes the square plate 223 to move backward.

[0052] Furthermore, the frame 225 is slidably connected to the inside of the connecting frame 211, and the outer walls of the left and right ends of the frame 225 are integrally formed with limiting protrusions 2250 that are slidably connected to the inside of the slide groove 2110. The rack 226 is welded and fixed to the bottom surface of the frame 225.

[0053] Furthermore, the electric actuator 221 drives the round rod 222 to move the square plate 223 forward, and through the first spring 224, drives the square frame 225 to move forward within the connecting frame 211. This setting limits the movement range of the square frame 225. In conjunction with the first spring 224, after the square frame 225 has completed its displacement, the square plate 223 can continue to move forward and drive the structure within the placement part 230 to move, thus realizing power transmission.

[0054] Please see Figures 3-9 As shown, in this embodiment, the placement part 230 includes a bracket 231, an end tooth 232 at its top, a sliding plate 233 driven by a square plate 223, a transmission assembly 235 in the bracket 231, a slider 238 sliding in the bracket 231, and a rotating wheel 239 at its end. The transmission assembly 235 includes a connecting rod 2352. The slider 238 has a guide groove 2380. The square frame 225 engages with the end tooth 232 through a rack 226, driving the bracket 231 to lift. When the square plate 223 squeezes the first spring 224 to move forward, it drives the sliding plate 233 to move together and pulls the transmission assembly 235, causing the connecting rod 2352 to move along the guide groove 2380, causing the slider 238 to move to the right and allowing the rotating wheel 239 to move out of the inner cylinder of the protective film 260.

[0055] Specifically, the bracket 231 has an integrally formed partition plate 2310 inside, and the bottom end of the bracket 231 has a through groove 2311 that runs through the left and right and provides a sliding range for the slider 238. The end teeth 232 are engaged and fixed to the outside of the convex shaft at the top of the bracket 231.

[0056] Furthermore, the slide plate 233 is slidably connected to the inside of the limiting frame 212, and a stop rod 234 is welded and fixed on the convex plate at the top of the slide plate 233. The stop rod 234 extends into the inside of the square frame 225 and its horizontal height is the same as that of the square plate 223.

[0057] Furthermore, the transmission assembly 235 also includes a transmission rod 2350 slidably connected inside the partition 2310, a concave frame 2351 snapped and fixed to the bottom end of the transmission rod 2350, and a limiting plate 2353 welded to the top end of the transmission rod 2350. The connecting rod 2352 is snapped and fixed to the inner wall of the concave frame 2351.

[0058] Furthermore, a connecting rope 236 is bonded between the limiting plate 2353 and the sliding plate 233, and a second spring 237 is sleeved on the outer side of the transmission rod 2350. The elastic force provided by the second spring 237 pushes the concave frame 2351 to move downward, and the rotating wheel 239 is rotatably connected to the convex shaft end of the outer wall of the slider 238.

[0059] Furthermore, the square frame 225 moves forward within the connecting frame 211, and the rack 226 engages with the end teeth 232 to drive the bracket 231 in the placement part 230 to lift and rotate. Then, the rotating wheel 239 at its end lifts the protective film 260 from the concrete surface. When the film on the protective film 260 is exhausted, the electric actuator 221 is continuously controlled to drive the square plate 223 to compress the first spring 224 and move forward, abutting against the abutment 234 on the sliding plate 233. This causes the sliding plate 233 to move forward within the limiting frame 212. The sliding plate 233 moves forward and is connected by the connecting rope 236. Pulling the entire transmission assembly 235 causes the transmission rod 2350 to slide within the partition 2310, which in turn causes the connecting rod 2352 to move along the guide groove 2380 of the slider 238 via the concave frame 2351. This drives the slider 238 to move to the right within the through groove 2311, thereby allowing the rotating wheel 239 to be removed from the inner cylinder of the protective film 260. The operator then holds a new protective film 260 for replacement. This setup utilizes the electric push rod 221 as a single drive source to achieve a rapid and automated removal function for the protective film roll, eliminating the need for laborious disassembly or operation of complex mechanisms and simplifying the film replacement process.

[0060] Please see Figure 2 As shown, in this embodiment, the two ends of the connecting rod 240 are respectively snapped and fixed to the outer side of the convex shaft of the two end brackets 231, and the cylindrical part inside the protective film 260 is sleeved on the outside of the rotating wheel 239.

[0061] Furthermore, the connecting rod 240 is used to enable the internal structures of the pair of placement parts 230 to move synchronously. The cylinder inside the protective membrane 260 cooperates with the rotating wheel 239. When the moving trolley 100 moves, the membrane of the protective membrane 260 can be laid flat on the concrete surface. This setting uses the connecting rod 240 to ensure the synchronicity of the movement of the pair of placement parts 230.

[0062] Please see Figures 3-10 As shown, in this embodiment, the cutting part 250 includes a pair of long rods 251 and a hot melt blade 254 connected between the pair of long rods 251. When the bracket 231 is lifted, the long rods 251 are driven to flip, and the hot melt blade 254 is used to cut the protective film 260.

[0063] Specifically, the cutting part 250 also includes a convex shaft 252 that is snapped into the bottom end of the long rod 251 and rotatably connected to the inside of the connecting frame 211, and a shaft tooth 253 that is snapped into and fixed on the outer wall of the convex shaft 252 and meshes with the end tooth 232. The hot melt knife 254 is fixedly connected to the end of the long rod 251 by screws.

[0064] Furthermore, after the support 231 is lifted and flipped, the rotating wheel 239 at its end lifts the protective film 260 from the concrete surface, while the rotation of the end tooth 232 meshes with the shaft tooth 253, driving the cam shaft 252 to drive the long rod 251 to flip downward, and then the film on the protective film 260 is cut by the hot melt knife 254 at its end. This setting realizes the integrated operation of automatic lifting and synchronous precise cutting of the protective film during the adjustment of the angle of the moving trolley, without the need for manual intervention or the use of additional tools, thus improving the continuity of the film covering operation.

[0065] Finally, it should be noted that the electric actuator 221 involved in this invention is a general standard part or a component known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, the electric actuator 221 is connected to an external power source through wires. The specific connection method should refer to the working principle in this invention. The electrical components are electrically connected in the order of operation. The detailed connection methods are all known technologies in the art.

[0066] When using the bridge deck concrete coating robot with automatic film covering and hot melt cutting mechanism of the present invention, the operator controls the moving trolley 100 to move on the vibrated concrete through a remote control device, and when it is necessary to adjust the angle of the moving trolley 100 to cut the protective film 260;

[0067] First, the electric actuator 221 drives the round rod 222 to move the square plate 223 forward, and through the first spring 224, drives the square frame 225 to move forward in the connecting frame 211. Meanwhile, the rack 226 engages with the end teeth 232 to drive the bracket 231 in the placement part 230 to lift and flip.

[0068] Next, after the support 231 is lifted and flipped, the rotating wheel 239 at its end lifts the protective film 260 from the concrete surface, and the rotation of the end tooth 232 will mesh with the shaft tooth 253, driving the cam shaft 252 to drive the long rod 251 to flip downward, and then the film on the protective film 260 is cut by the hot melt knife 254 at its end. After the angle of the moving trolley 100 is adjusted, the electric push rod 221 is controlled to drive the square plate 223 to reset.

[0069] Subsequently, after the film on the protective film 260 is exhausted, the above operation is repeated to lift and flip the bracket 231. At this time, the limiting protrusion 2250 abuts against the front wall of the slide 2110, and the electric push rod 221 is continuously controlled to drive the square plate 223 to squeeze the first spring 224 forward and abut against the abutment rod 234 on the slide plate 233, thereby driving the slide plate 233 to move forward inside the limiting frame 212.

[0070] Afterwards, the slide plate 233 moves forward and pulls the entire transmission assembly 235 through the connecting rope 236, which in turn pulls the transmission rod 2350 to slide within the partition plate 2310. This causes the connecting rod 2352 to move along the guide groove 2380 of the slider 238 through the concave frame 2351, driving the slider 238 to move to the right within the through groove 2311. This allows the rotating wheel 239 to be removed from the inner cylinder of the protective film 260, and the operator then replaces it with a new protective film 260.

[0071] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A bridge deck concrete coating robot with an automatic coating and hot-melt cutting mechanism, comprising a mobile trolley and a coating device located at the rear of the mobile trolley, characterized in that: The film coating device includes a pair of connecting parts, a driving part disposed inside the connecting parts, a placement part driven by the driving part, a connecting rod disposed between the pair of placement parts and a protective film, and a cutting part disposed outside the connecting parts. The connecting part includes a connecting frame that is fixedly connected to the rear wall support of the mobile trolley by bolts and a limiting frame that is welded and fixed to the inner wall of the connecting frame and has a concave cross section. Sliding grooves are provided on the inner walls of both the left and right ends of the connecting frame. The driving unit includes an electric actuator, a round rod driven by the electric actuator, a square plate at the end of the round rod, a first spring sleeved on the outside of the round rod, a square frame sleeved on the outside of the square plate, and a pair of racks on the bottom surface of the square plate. The electric actuator drives the square frame to move through the square plate. After the square frame is limited, the square plate squeezes the first spring and continues to move forward. Limiting protrusions that are slidably connected to the inside of the slide groove are integrally formed on the outer walls of the left and right ends of the square frame. The placement part includes a bracket, an end tooth at the top of the bracket, a sliding plate driven by a square plate, a transmission assembly inside the bracket, a slider sliding inside the bracket, and a rotating wheel at the end of the slider. The transmission assembly includes a connecting rod, and the slider has a guide groove. The square frame engages with the end tooth through a rack and pinion to drive the bracket to lift. When the square plate squeezes the first spring and moves forward, it causes the sliding plate to move along with it and pulls the transmission assembly, allowing the connecting rod to move along the guide groove, causing the slider to move to the right and allowing the rotating wheel to move out of the inner cylinder of the protective film. The sliding plate is slidably connected to the inside of the limiting frame. A stop bar is welded and fixed on the convex plate at the top of the sliding plate. The stop bar extends into the inside of the square frame and the horizontal height of the stop bar is the same as that of the square plate. A partition is integrally formed inside the bracket. The transmission assembly also includes a transmission rod slidably connected inside the partition, a concave frame snapped and fixed to the bottom end of the transmission rod, and a limiting plate welded to the top end of the transmission rod. The connecting rod is snapped and fixed to the inner wall of the concave frame. A connecting rope is adhered between the limiting plate and the sliding plate, and a second spring is sleeved on the outer side of the transmission rod; The cutting section includes a pair of long rods and a hot melt knife connected between the pair of long rods. When the bracket is lifted, the long rods are driven to flip, and the hot melt knife is used to cut the protective film. The cutting section also includes a cam shaft that is snapped onto the bottom end of the long rod and rotatably connected inside the connecting frame, and a shaft tooth that is snapped onto the outer wall of the cam shaft and meshes with the end tooth.

2. The bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism according to claim 1, characterized in that: The electric actuator is fixedly connected to the inner wall of the connecting frame by screws. The round rod is snapped and fixed to the end of the electric actuator telescopic rod. The square plate is snapped and fixed to the end of the round rod. The two ends of the first spring are welded and fixed to the outer wall of the square plate and the inner wall of the square frame, respectively. The elastic force provided by the first spring pushes the square plate to move backward.

3. The bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism according to claim 1, characterized in that: The square frame is slidably connected to the inside of the connecting frame, and the rack is welded and fixed to the bottom surface of the square frame.

4. The bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism according to claim 1, characterized in that: The bottom end of the bracket has a through groove that extends from left to right and provides a sliding range for the slider. The end teeth are engaged and fixed to the outside of the convex shaft at the top of the bracket.

5. The bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism according to claim 1, characterized in that: The elastic force provided by the second spring pushes the concave frame downward, and the rotating wheel is rotatably connected to the convex shaft end of the outer wall of the slider.

6. The bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism according to claim 1, characterized in that: The two ends of the connecting rod are respectively snapped and fixed to the outer side of the convex shaft of the two end brackets, and the cylindrical part inside the protective film is sleeved on the outside of the rotating wheel.

7. The bridge deck concrete coating robot with automatic coating and hot-melt cutting mechanism according to claim 1, characterized in that: The hot melt knife is fixedly connected to the end of the long rod by screws.

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