A zinc-aluminum-magnesium steel guardrail post pipe sealing device

Abstract

This application relates to a sealing device for zinc-aluminum-magnesium steel guardrail post tubes. It includes a conveyor, a lifting frame, a front-end sealing plate, a rear-end sealing plate, a hole sealing roller, and a laser rangefinder sensor. A vertically movable lifting frame is movably mounted below the conveyor. The front-end sealing plate is rotatably mounted at one end of the lifting frame, and a connecting rod is hinged to the other end, with the rear-end sealing plate rotatably mounted on the connecting rod. A laser rangefinder sensor is located above the conveyor, and the vertically movable hole sealing roller is mounted on the lifting frame. This application seals the cuts at both ends of the guardrail post using the front and rear sealing plates, respectively, and seals the cuts at the connecting holes on the guardrail post using the hole sealing roller. This achieves automated and mechanized application of sealant to all cuts on the guardrail post, effectively reducing the labor intensity of workers and improving the efficiency of sealant application to the cuts on the guardrail post.

Description

Technical Field

[0001] This application relates to the technical field of guardrail post tube processing equipment, and in particular to a zinc-aluminum-magnesium steel guardrail post tube edge sealing device. Background Technology

[0002] Zn-Al-Mg coated steel is a steel sheet with a Zn-Al-Mg coating obtained by adding appropriate amounts of Al, Mg, and other trace alloying elements to the zinc bath and using a fully enclosed continuous coating method (such as the modified Sendzimir process based on hydrogen reduction or the US Steel process). Extensive research and production applications have proven that Zn-Al-Mg coated steel is a fourth-generation corrosion-resistant alloy coating material, following Zn-5%Al and Zn-55% alloys, possessing high corrosion resistance. Furthermore, Zn-Al-Mg coated steel exhibits excellent plasticity and formability; in particular, it can be directly applied in engineering projects after forming without further hot-dip galvanizing, avoiding the various pollution problems associated with subsequent hot-dip galvanizing and demonstrating significant environmental advantages.

[0003] Engineering applications of Zn-Al-Mg coated steel sheet forming structural components have revealed that this type of steel, with a thickness of less than 3 mm, exhibits strong self-healing capabilities at its thin-walled cuts. The specific principle is that at the cut, due to the potential difference, the steel exposed to air undergoes an electrochemical reaction with the coating. Because the coating has sacrificial anode properties, it further accelerates the dissolution of the coating. As the dissolved coating products are generated, they gradually cover and seal the cut, effectively preventing further corrosion of the steel sheet. In the early stage of cut formation (5 days to 6 months), slight red rust will appear; in the middle stage (six months to several years), the dissolution products of the coating material will cover the cut, preventing further corrosion of the steel material and still providing better anti-corrosion effects. Currently, when using Zn-Al-Mg coated steel plates to make guardrail posts, the corrosion repair of weld seams has been resolved. However, because the thickness of the base steel plate is greater than 3 mm, the cut surfaces at the ends of the guardrail posts and the edges of the connecting holes cannot heal effectively. This leads to corrosion after installation, and even premature red rust, seriously affecting the reliability of traffic safety facilities and threatening the safety of pedestrians and vehicles. Therefore, it is necessary to seal the cut surfaces of the guardrail posts, that is, to apply or spray appropriate sealants to the cut surfaces at both ends of the guardrail post tube and the cut surfaces of the holes on the guardrail post tube, thereby preventing the technical problem of rusting at the cut surfaces. Currently, due to technical issues, most Zn-Al-Mg guardrail post tubes neglect the sealing of their cut surfaces, or use manual methods to apply sealant to both ends of the guardrail post tube, which is still ineffective for the connecting holes on the guardrail post tube. This not only causes high labor intensity for workers and poor sealing effect, but more importantly, it does not fundamentally solve the existing problems. Summary of the Invention

[0004] To address or partially address the problems existing in related technologies, this application provides a zinc-aluminum-magnesium steel guardrail post pipe sealing device, which aims to achieve mechanized application of sealant to both ends of the guardrail post pipe and the connecting holes above it, thereby reducing the labor intensity of workers.

[0005] This application provides a zinc-aluminum-magnesium steel guardrail post tube sealing device, including a conveyor, a lifting frame, a front-end cutting sealing plate, a rear-end cutting sealing plate, a hole cutting sealing roller, and a laser range sensor;

[0006] A vertically movable lifting frame is movably installed below the conveyor. The lifting frame is arranged parallel to the conveyor's conveying direction and is driven to move up and down by a first electric telescopic rod. A front-end cutting and sealing plate is rotatably installed at one end of the lifting frame, and the front-end cutting and sealing plate is driven to rotate by an adjusting motor. A connecting rod is hinged to the other end of the lifting frame, and the connecting rod is driven to rotate by a second electric telescopic rod. A rear-end cutting and sealing plate is rotatably installed on the connecting rod.

[0007] Above the conveyor is a laser rangefinder sensor for detecting the position of holes on the guardrail post tubes. The lifting frame is equipped with a hole-cutting and sealing roller that can move up and down. The hole-cutting and sealing roller is located directly below the laser rangefinder sensor and is driven to move up and down by a linear module.

[0008] The laser rangefinder is connected to the signal input terminal of the controller, and the signal output terminal of the controller is electrically connected to the first electric telescopic rod, the adjusting motor, and the second electric telescopic rod, respectively.

[0009] In some designs, the lifting frame is equipped with a sealant replenishment nozzle, and the liquid outlet direction of the sealant replenishment nozzle is directly facing the top of the front end sealing plate;

[0010] The sealant replenishment nozzle is connected in sequence to the replenishment pump and the sealant storage tank via pipes.

[0011] In some embodiments, a first recycling tray is provided below the lifting frame, the projection of the first recycling tray in the vertical direction at least covering the projection of the front end sealing tray in the vertical direction, and the first recycling tray is connected to the sealant storage tank through a pipe.

[0012] In some designs, a housing is fixedly mounted on the connecting rod, and a mounting groove is provided on one side of the housing. A limiting part is provided on the side wall of the mounting groove, and the rear end cut-edge sealing disc is rotatably mounted in the mounting groove and located between the limiting part and the bottom surface of the mounting groove.

[0013] In some solutions, the rear end cut-edge sealing disc is provided with a material replenishment hole, which is spaced apart around the circumference of the rear end cut-edge sealing disc;

[0014] The outer casing is provided with a feed pipe facing the feed hole, and the feed pipe is connected to the feed pump;

[0015] The bottom of the outer casing is connected to the sealant storage tank via a pipe.

[0016] In some designs, the perforated sealing roller is hollow, and its lower end is connected to the supplementary pump via a pipe.

[0017] The top of the perforated sealing roller is provided with a through hole communicating with its interior.

[0018] In some designs, the bottom of the perforated sealing roller is provided with a second recycling tray, the bottom of which is connected to the sealant storage tank via a pipe.

[0019] In some embodiments, the conveyor includes a frame and conveyor rollers; conveyor rollers are spaced apart on the frame along the conveying direction, and two rows of conveyor rollers are arranged parallel to each other, with the two rows of conveyor rollers inclined to each other.

[0020] In some designs, the included angle between the two rows of conveyor rollers is 60 to 120 degrees.

[0021] In some designs, the conveying roller is inclined toward the rear side in the conveying direction.

[0022] The technical solution provided in this application may include the following beneficial effects:

[0023] This application uses a front-end and rear-end sealing disc to seal the cuts at both ends of the guardrail post, and a perforated sealing roller to seal the cuts at the connecting holes on the guardrail post. This achieves automated and mechanized application of sealant to all cuts on the guardrail post, effectively reducing the labor intensity of workers and improving the efficiency of applying sealant to the cuts on the guardrail post.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0025] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0026] Figure 1This is a schematic diagram of the edge-sealing device shown in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of a guardrail post on a conveyor as shown in an embodiment of this application;

[0028] Figure 3 This is another schematic diagram showing the guardrail posts on the conveyor as illustrated in the embodiments of this application;

[0029] Figure 4 This is a top view schematic diagram of the conveyor of the edge-sealing device shown in the embodiments of this application;

[0030] Figure 5 This is an assembly schematic diagram of the two-cut edge-sealing discs of the edge-sealing device shown in the embodiments of this application;

[0031] Figure 6 This is another assembly schematic diagram of the two-cut edge-sealing discs of the edge-sealing device shown in the embodiments of this application;

[0032] Figure 7 This is an assembly schematic diagram of the rear end cut-out edge sealing disc of the edge sealing device shown in the embodiments of this application;

[0033] Figure 8 yes Figure 7 Enlarged view of point A;

[0034] Figure 9 This is a schematic diagram of the assembly of the sealing roller with holes cut in the sealing device shown in the embodiments of this application;

[0035] Figure 10 This is a control block diagram of the edge-sealing device shown in the embodiments of this application;

[0036] Figure label:

[0037] 1. Conveyor; 11. Frame; 12. Conveyor Roller; 2. Lifting Frame; 21. First Electric Telescopic Rod; 3. Front Cutting and Sealing Plate; 31. Adjusting Motor; 32. Sealant Replenishment Nozzle; 33. First Recycling Plate; 4. Rear Cutting and Sealing Plate; 41. Connecting Rod; 42. Second Electric Telescopic Rod; 43. Housing; 44. Mounting Slot; 45. Limiting Part; 46. Feeding Hole; 47. Feeding Pipe; 5. Hole Cutting and Sealing Roller; 51. Linear Module; 52. Through Hole; 53. Second Recycling Plate; 6. Laser Rangefinder Sensor; 7. Controller; 8. Replenishment Pump; 9. Sealant Storage Tank. Detailed Implementation

[0038] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0039] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] To seal the cut ends and connecting holes of the guardrail post tubes with sealant; please refer to [link / reference needed]. Figure 1 and Figure 10 This application provides a zinc-aluminum-magnesium steel guardrail post pipe sealing device, including a conveyor 1, a lifting frame 2, a front-end cutting sealing plate 3, a rear-end cutting sealing plate 4, a hole cutting sealing roller 5, and a laser range sensor 6.

[0043] Conveyor 1 is used to transport guardrail posts that require edge sealing. During transport, a single post is transported continuously, with a certain distance between adjacent guardrail posts.

[0044] like Figures 1-4 As shown, the conveyor 1 includes a frame 11, conveyor rollers 12, a conveyor motor, and a conveyor chain. The conveyor rollers 12 are spaced apart on the frame 11 along the conveying direction and are rotatably connected to the frame 11. The conveying direction of the conveyor 1 is defined as the front side of the conveyor 1. A row of conveyor rollers 12 is arranged on each of the left and right sides of the conveyor 1, with the two rows of rollers 12 corresponding one-to-one and inclined towards each other, forming an included angle. During conveying, the guardrail post is located between the two rows of conveyor rollers 12. In some specific embodiments, the included angle between the two rows of conveyor rollers 12 is 60 degrees to 120 degrees, such as 60 degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees, or any angle between 60 degrees and 120 degrees. Preferably, the included angle between the two rows of conveyor rollers 12 is 90 degrees, which is equal to the edge angle of the guardrail post with a square cross-section, ensuring that the center point height of the guardrail post is consistent regardless of whether it is a square or cylindrical guardrail post being conveyed.

[0045] One of the conveyor rollers 12 is connected to two adjacent uprights via a conveyor chain, and one of the conveyor rollers 12 is driven to rotate by a conveyor motor. During conveying, this row of conveyor rollers 12 serves as the power source, driving the guardrail uprights to move along the conveying direction. The conveyor motor is a stepper motor or a servo motor to facilitate the control of the conveyor 1's operation and stop. Simultaneously, the conveyor motor can be electrically connected to a controller 7, allowing for more precise control of the conveyor 1's operation and stop.

[0046] In some embodiments, the upper end of the conveyor roller 12, which serves as the power end, is also inclined rearward. This generates an upward component force when conveying the square guardrail post. When the guardrail post is placed on the conveyor 1, it forms... Figure 3 In the indicated state, drive the guardrail post to rotate until two sides of the guardrail post are in close contact with the conveyor rollers 12 on both sides, as shown. Figure 2 As shown, this effectively ensures the stability of the conveying process and also ensures that the center point height of the guardrail posts delivered to the designated location is consistent.

[0047] A movable lifting frame 2 is movably installed below the conveyor 1. The lifting frame 2 extends along the conveying direction. A vertically downward-extending guide rod is provided at the bottom of the lifting frame 2, and a vertically upward-extending guide tube is provided below the lifting frame 2. The lower end of the guide rod is inserted into the guide tube, forming a sliding connection. The vertical movement of the lifting frame 2 is guided by the guide tube and the guide rod. The lower end of the first electric telescopic rod 21 is fixed to the ground, and the upper end of the first electric telescopic rod 21 is fixed to the top of the lifting frame 2, so that when the first electric telescopic rod 21 is activated, it drives the lifting frame 2 to move up and down.

[0048] like Figure 5 As shown, a front-end cutting and sealing disc 3 is rotatably mounted on one end of the lifting frame 2. The front-end cutting and sealing disc 3 is used to seal the front-end cut of the guardrail post. The disc surface of the front-end cutting and sealing disc 3 is perpendicular to the conveying direction of the conveyor 1. An adjusting motor 31 is fixedly mounted on the lifting frame 2. The output shaft of the adjusting motor 31 is fixedly connected to the front-end cutting and sealing disc 3. Thus, during operation, the front-end cutting and sealing disc 3 can be driven to rotate by the adjusting motor 31. The adjusting motor 31 adopts a stepper motor or a servo motor to facilitate control of its rotation angle.

[0049] The other end of the lifting frame 2 is hinged to the lower end of the connecting rod 41. One end of the second electric telescopic rod 42 is hinged to the lifting frame 2, and the other end is hinged to the upper end of the connecting rod 41. The connecting rod 41, the second electric telescopic rod 42, and the lifting frame 2 together form a triangular structure, so that the connecting rod 41 can be rotated by the second electric telescopic rod 42, allowing the connecting rod 41 to switch between the horizontal and vertical directions. The rear end cutting edge sealing plate 4 is rotatably installed on the connecting rod 41 and is used to seal the front end cut of the guardrail post.

[0050] The conveyor roller 12 of the conveyor 1 located directly above the front end edge sealing plate 3 and the rear end edge sealing plate 4 is not provided, so that when the lifting frame 2 rises, the front end edge sealing plate 3 and the rear end edge sealing plate 4 can rise above the conveyor 1.

[0051] During operation, the rear end sealing plate 4 is in a horizontal position. The lifting frame 2 moves upward under the drive of the first electric telescopic rod 21, and the front end sealing plate 3 moves upward above the conveyor 1. The guardrail post tube is conveyed forward until the front end of the guardrail post tube abuts against the front end sealing plate 3 (the position detection of the guardrail post tube can be achieved by setting a proximity switch on the frame 11 of the conveyor 1, etc.), so as to achieve the application of sealant at the front end of the guardrail post tube. Then the conveyor 1 stops, and then the second electric telescopic rod 42 moves, and the rear end sealing plate 4 rotates to a vertical position. At this time, the rear end sealing plate 4 abuts against the rear end of the guardrail post tube, achieving the application of sealant at the rear end of the guardrail post tube while clamping the guardrail post tube between the front end sealing plate 3 and the rear end sealing plate 4.

[0052] Above the conveyor 1 is a laser range sensor 6 for detecting the position of the holes on the guardrail post tube. Specifically, when the front end of the guardrail post tube is against the front end sealing plate 3, if the connecting hole on the guardrail post tube is vertically upward, then the laser range sensor 6 will be illuminating the connecting hole.

[0053] like Figure 10As shown, the lifting frame 2 is equipped with a vertically movable perforated sealing roller 5, which is located directly below the laser rangefinder 6. A linear module 51 is fixedly mounted on the lifting frame 2, and the perforated sealing roller 5 is fixedly mounted on the slider of the linear module 51. Thus, the linear module 51 can drive the perforated sealing roller 5 to move vertically. The laser rangefinder 6 is connected to the signal input terminal of the controller 7, and the signal output terminal of the controller 7 is electrically connected to the first electric telescopic rod 21, the adjusting motor 31, and the second electric telescopic rod 42, respectively.

[0054] The process of sealing the connection holes of the guardrail post pipe is as follows:

[0055] During the forward conveying of the guardrail post tube, at the beginning, the front end of the guardrail post tube has not yet reached below the laser range sensor 6. At this time, the distance detected by the laser range sensor 6 is the distance between its detection head and the upper end face of the hole cutting sealing roller 5. This distance is relatively large and is recorded as A.

[0056] After the guardrail post tube is clamped between the front end sealing plate 3 and the rear end sealing plate 4, if the distance detected by the laser rangefinder 6 differs significantly from value A, it indicates that the connecting hole of the guardrail post is not vertically upward, meaning the connecting hole is not aligned with the hole sealing roller 5. If the guardrail post is square, the controller 7 controls the first electric telescopic rod 21 to extend, lifting the guardrail post upward a certain distance to separate it from the conveyor 1. Then, the controller controls the adjusting motor 31 to rotate until the distance detected by the laser rangefinder 6 is approximately equal to value A, meaning the connecting hole is aligned with the hole sealing roller 5. Subsequently, the controller 7 controls the linear module 51 to move the hole sealing roller 5 upward, passing through the connecting hole of the guardrail post, thus sealing the gap in the connecting hole. If the guardrail post is cylindrical, the controller 7 can directly control the adjusting motor 31 to rotate.

[0057] In this embodiment, it is conceivable that brush bristles are laid on the working surfaces of the front end cutting edge sealing disc 3, the rear end cutting edge sealing disc 4, and the hole cutting edge sealing roller 5 to improve the adhesion of the sealant and increase the contact area between the guardrail post cut and the sealant.

[0058] In some specific implementations, such as Figure 6As shown, the lifting frame 2 is equipped with a sealant replenishment nozzle 32, with the liquid outlet direction of the sealant replenishment nozzle 32 facing the top of the front end sealing plate 3. The sealant replenishment nozzle 32 is connected to the replenishment pump 8 and the sealant storage tank 9 in sequence through pipes. During operation, the replenishment pump 8 can be activated at intervals, and then the sealant is sprayed onto the top of the front end sealing plate 3 through the sealant replenishment nozzle 32. The sealant flows downward to wet the entire working surface, ensuring that the guardrail post is coated with sufficient sealant every time it comes into contact with the front end sealing plate 3.

[0059] In this embodiment, a first recycling tray 33 is provided below the lifting frame 2. The projection of the first recycling tray 33 in the vertical direction at least covers the projection of the front end sealing plate 3 in the vertical direction. The first recycling tray 33 is connected to the sealant storage tank 9 through a pipe. The first recycling tray 33 is bowl-shaped and is used to collect the sealant dripping from the front end sealing plate 3, and then return it to the sealant storage tank 9 through a pipe to reduce the waste of sealant and save costs.

[0060] In some specific implementations, such as Figure 7 and Figure 8 As shown, a housing 43 is fixedly mounted on the connecting rod 41. A mounting groove 44 is provided on the side of the housing 43 opposite to the front end cutting edge sealing disc 3. An inwardly extending limiting part 45 is provided on the side wall of the mounting groove 44. The rear end cutting edge sealing disc 4 is rotatably mounted within the mounting groove 44 and is located between the limiting part 45 and the bottom surface of the mounting groove 44. The rear end cutting edge sealing disc 4 is rotatably connected to the connecting rod 41 through the housing 43. Preferably, the rear end cutting edge sealing disc 4 and the bottom surface of the mounting groove 44 are rotatably connected by ball bearings to reduce friction between the rear end cutting edge sealing disc 4 and the housing 43.

[0061] In this embodiment, the rear end edge sealing disc 4 is provided with replenishment holes 46, which are spaced apart around the circumference of the rear end edge sealing disc 4 and located near the edge of the rear end edge sealing disc 4. The outer shell 43 is provided with a replenishment pipe 47 facing the replenishment holes 46, which is located near the upper end of the outer shell 43 and is connected to the replenishment pump 8. During operation, the replenishment pump 8 introduces the sealant into the replenishment pipe 47, and then the replenishment pipe 47 sprays the sealant from the replenishment holes 46 onto the working surface of the rear end edge sealing disc 4 to replenish the sealant on the rear end edge sealing disc 4, ensuring that there is sufficient sealant on the rear end edge sealing disc 4 each time it is coated. Furthermore, this method prevents sealant splashing, thus avoiding sealant waste. The bottom of the outer shell 43 is connected to the sealant storage tank 9 through a pipe to realize sealant recovery and reduce sealant waste.

[0062] In this embodiment, as Figure 9As shown, the perforated sealing roller 5 is hollow, and its lower end is connected to the replenishment pump 8 through a pipe. The top of the perforated sealing roller 5 is provided with a through hole 52 communicating with its interior. During operation, the sealant is introduced into the perforated sealing roller 5 through the replenishment pump 8 and then discharged through the through hole 52 to replenish the sealant on the perforated sealing roller 5, so as to ensure that there is sufficient sealant on the perforated sealing roller 5 every time it is coated.

[0063] In this embodiment, the bottom of the hole-cut sealing roller 5 is provided with a second recycling tray 53. The second recycling tray 53 is bowl-shaped, and the bottom of the second recycling tray 53 is connected to the sealant storage tank 9 through a pipe to realize the recycling of excess sealant, reduce the waste of sealant, and help save costs.

[0064] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A sealing device for zinc-aluminum-magnesium steel guardrail post tubes, characterized in that: Includes a conveyor (1), a lifting frame (2), a front-end cutting and sealing plate (3), a rear-end cutting and sealing plate (4), a hole cutting and sealing roller (5), and a laser rangefinder (6); A vertically movable lifting frame (2) is movably installed below the conveyor (1). The lifting frame (2) is set parallel to the conveying direction of the conveyor (1) and is driven to move up and down by a first electric telescopic rod (21). A front end cutting and sealing plate (3) is rotatably installed at one end of the lifting frame (2). The front end cutting and sealing plate (3) is driven to rotate by an adjusting motor (31). A connecting rod (41) is hinged to the other end of the lifting frame (2). The connecting rod (41) is driven to rotate by a second electric telescopic rod (42). A rear end cutting and sealing plate (4) is rotatably installed on the connecting rod (41). Above the conveyor (1) is a laser range sensor (6) for detecting the position of holes on the guardrail post tube. The lifting frame (2) is equipped with a hole cutting and sealing roller (5) that can move up and down. The hole cutting and sealing roller (5) is located directly below the laser range sensor (6) and is driven to move up and down by a linear module (51). The laser rangefinder (6) is connected to the signal input terminal of the controller (7), and the signal output terminal of the controller (7) is electrically connected to the first electric telescopic rod (21), the adjusting motor (31), and the second electric telescopic rod (42), respectively.

2. The edge sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 1, characterized in that: The lifting frame (2) is equipped with a sealant replenishing nozzle (32), and the liquid outlet direction of the sealant replenishing nozzle (32) is directly facing the top of the front end cutting sealing plate (3); The sealant replenishment nozzle (32) is connected in sequence to the replenishment pump (8) and the sealant storage tank (9) via pipes.

3. The edge-sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 2, characterized in that: The lifting frame (2) is provided with a first recycling tray (33) below it. The projection of the first recycling tray (33) in the vertical direction at least covers the projection of the front end sealing tray (3) in the vertical direction. The first recycling tray (33) is connected to the sealant storage tank (9) through a pipe.

4. The edge sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 2, characterized in that: A housing (43) is fixedly installed on the connecting rod (41). A mounting groove (44) is provided on one side of the housing (43). A limiting part (45) is provided on the side wall of the mounting groove (44). The rear end cut-edge sealing plate (4) is rotatably installed in the mounting groove (44) and located between the limiting part (45) and the bottom surface of the mounting groove (44).

5. The edge-sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 4, characterized in that: The rear end cut-edge sealing disc (4) is provided with a material replenishing hole (46), and the material replenishing hole (46) is spaced apart around the circumference of the rear end cut-edge sealing disc (4); The outer casing (43) is provided with a feed pipe (47) facing the feed hole (46), and the feed pipe (47) is connected to the feed pump (8); The bottom of the outer shell (43) is connected to the sealant storage tank (9) via a pipe.

6. The edge-sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 2, characterized in that: The hole-cut sealing roller (5) is hollow, and its lower end is connected to the supplementary pump (8) through a pipe; The top of the perforated sealing roller (5) is provided with a through hole (52) communicating with its interior.

7. The edge sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 6, characterized in that: The bottom of the hole-cut sealing roller (5) is provided with a second recycling tray (53), and the bottom of the second recycling tray (53) is connected to the sealant storage tank (9) through a pipe.

8. The edge sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 1, characterized in that: The conveyor (1) includes a frame (11) and conveying rollers (12); conveying rollers (12) are spaced apart on the frame (11) along the conveying direction, and two rows of conveying rollers (12) are arranged parallel to each other, with the two rows of conveying rollers (12) inclined to each other.

9. The edge-sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 8, characterized in that: The included angle between the two rows of conveyor rollers (12) is 60 to 120 degrees.

10. The edge-sealing device for zinc-aluminum-magnesium steel guardrail post tubes according to claim 9, characterized in that: The conveying roller (12) is inclined to the rear side in the conveying direction.

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