A highway height limiting rod mounting and welding device

Abstract

The utility model relates to welding equipment technical field and disclose a kind of highway height limiting rod installation welding equipment, including roof, the roof outer wall front and rear both ends are fixed with fixed block, installation cavity is opened in the fixed block inside, two the installation cavity of fixed block is slidably connected with two slide bars and two round rods respectively, the welding equipment of the utility model, by driving motor is driven rotating block reciprocating rotation along arc trajectory by gear rack drive, make welding head automatic fit beam and column joint seam complete welding operation, operator can realize ground control without climbing, eliminate the security risk brought by aerial work;Meanwhile, the elastic pre-tightening force of spring makes welding head self-adapting joint surface change, guarantee welding process continuous stability, avoid the fatigue accumulation brought by artificial long time gun operation, significantly improve welding efficiency and construction continuity, reduce the labor intensity and health damage of operator.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a welding equipment for installing highway height restriction poles. Background Technology

[0002] Height restriction poles, as road traffic safety facilities, are widely used at the entrances of bridges, tunnels, culverts, and other structures to restrict vehicles exceeding their height limit. A typical height restriction pole consists of two upright posts and a horizontal beam erected between them. The bottom of the posts is fixed to foundation piles, and the ends of the beam are welded to the posts to form a rigid whole.

[0003] Currently, the installation and welding of height restriction poles mainly relies on operators carrying welding tools and manually working at height. Operators must use ladders, scaffolding, or aerial work platforms to climb to the top of the poles and then use welding torches to weld the joints between the beams and the poles. Because welders must maintain a specific posture for extended periods, prolonged hand-held welding tools lead to operator fatigue and a significant decrease in work efficiency over time. Furthermore, working at height poses certain safety risks, and wearing protective gear further exacerbates the inconvenience and physical exertion. In addition, the fumes, arc light, and high-temperature slag generated during welding pose a threat to the health of operators. Frequent personnel rotations under harsh conditions make it difficult to ensure the continuity and consistency of construction. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a highway height restriction pole installation and welding equipment, which has the advantages of automatically clamping and lifting the crossbeam and automatically welding the joint without the need for operators to climb to a height.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a highway height restriction pole installation and welding device, including a top plate, with fixing blocks fixed at both ends of the outer wall of the top plate, and an installation cavity opened inside the fixing block. Two sliding rods and two round rods are slidably connected in the installation cavities of the two fixing blocks respectively, and the ends of the two sliding rods and two round rods that are far apart from each other are located outside the fixing blocks. The ends of the two round rods that are close to each other are threaded with a bidirectional screw, and the bidirectional screw is rotatably connected to the inner wall of the installation cavity of the fixing block through a bearing.

[0006] Welding mechanisms are provided on both the left and right sides of the fixing block. Each welding mechanism includes a support plate. The ends of the sliding rod and the round rod located outside the fixing block are fixedly connected to the support plate. A drive motor is fixedly mounted on the surface of the support plate. A short shaft is fixedly sleeved on the output end of the drive motor. The short shaft passes through the inner wall of the support plate and is rotatably connected to it. A first gear is fixedly sleeved on the outer surface of the short shaft. An arc-shaped rack meshes with the side wall of the first gear. A rotating block is fixedly mounted on the outer surface of the arc-shaped rack. An arc-shaped groove is formed on the rotating block. A connecting block adapted to the arc-shaped groove is fixedly mounted on the outer surface of the support plate. The connecting block is slidably connected within the arc-shaped groove. A welding head is provided on the outer surface of the rotating block.

[0007] Furthermore, a drive mechanism is provided on the outer side of the bidirectional screw. The drive mechanism includes a fixed plate, which is fixedly connected to the upper outer surface of the fixed block. A power motor is fixedly installed on the outer surface of the fixed plate. A rotating shaft is fixedly sleeved on the output end of the power motor. The rotating shaft passes through the inner wall of the fixed plate and is rotatably connected to the inside of the fixed plate. A second gear for transmitting power is fixedly sleeved on the outer surface of the rotating shaft. The second gear is located inside the fixed plate, and a toothed ring is meshed with the side wall of the second gear. The toothed ring is fixedly sleeved on the outer surface of the bidirectional screw.

[0008] Furthermore, the top plate has an internal equipment cavity, and a clamping mechanism is provided inside the equipment cavity. The clamping mechanism includes a first cylinder fixedly installed inside the top plate. Two moving blocks are slidably connected inside the top plate. A clamping plate is fixedly installed at the top of each of the two moving blocks. Two connecting rods are hinged between the two moving blocks and the output end of the first cylinder.

[0009] Furthermore, a scissor arm assembly is rotatably connected to the bottom end of the top plate, and a bottom plate is rotatably connected to the end of the scissor arm assembly away from the top plate. Two sets of sliders are rotatably connected to the movable end of the scissor arm assembly, and the two sets of sliders are slidably connected to the bottom end of the top plate and the top end of the bottom plate, respectively.

[0010] Furthermore, a second cylinder is fixedly installed at the top of the base plate, and the output end of the second cylinder is rotatably connected to the movable end of the scissor arm assembly.

[0011] Furthermore, a caster wheel is fixedly installed at the bottom end of the base plate, and a handle is fixedly installed at the top end of the base plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The welding equipment of this utility model drives a rotating block to reciprocate along an arc trajectory via a drive motor and gear rack transmission, so that the welding head automatically fits into the joint between the crossbeam and the column to complete the welding operation. Operators can operate from the ground without having to climb to a height, eliminating the safety risks associated with working at height. At the same time, the elastic preload of the spring allows the welding head to adapt to changes in the curvature of the joint, ensuring a continuous and stable welding process. This avoids the fatigue accumulation caused by prolonged manual torch operation, significantly improving welding efficiency and construction continuity, and reducing the labor intensity and health damage of operators.

[0013] 2. The welding equipment of this utility model uses a first cylinder to drive a linkage mechanism to move two clamping plates toward each other, thereby achieving stable clamping of the crossbeam and laying the foundation for subsequent welding. At the same time, the second cylinder drives the scissor arm assembly to deform and smoothly lift the crossbeam to the target installation height. The positioning and height adjustment of the crossbeam can be completed without relying on external lifting equipment, reducing equipment coordination costs and site constraints. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the welding equipment structure of this utility model; Figure 2 This is a schematic diagram of the structure of the base plate of this utility model; Figure 3 This is a schematic diagram of the guide rail structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the top plate of this utility model; Figure 5 This is a schematic diagram of the clamping mechanism of this utility model; Figure 6 This is a schematic diagram of the toothed ring of this utility model; Figure 7 This is a schematic diagram of the welding mechanism of this utility model; Figure 8 This is an exploded structural diagram of the welding mechanism of this utility model.

[0015] In the diagram: 1. Top plate; 2. Fixed block; 3. Slide rod; 4. Round rod; 5. Bidirectional screw; 6. Support plate; 7. Drive motor; 8. Short shaft; 9. First gear; 10. Arc rack; 11. Rotating block; 12. Connecting block; 13. Fixed tube; 14. Welding head; 15. Spring; 16. Fixed plate; 17. Power motor; 18. Rotating shaft; 19. Second gear; 20. Gear ring; 21. First cylinder; 22. First hinge block; 23. Connecting rod; 24. Second hinge block; 25. Moving block; 26. Clamping plate; 27. Scissor arm assembly; 28. Slider; 29. ​​Guide rail; 30. Base plate; 31. Universal wheel; 32. Handle; 33. Arc block; 34. Second cylinder; 35. Movable block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 8 As shown, this utility model provides a welding equipment for installing highway height restriction poles, comprising: A top plate 1 has two fixed blocks 2 fixedly installed at both the front and rear ends of its outer wall. Each fixed block 2 has an internal mounting cavity. The mounting cavities of the two fixed blocks 2, arranged front and rear, are respectively equipped with a telescopic mechanism and a limiting mechanism. The telescopic mechanism includes two round rods 4, and the limiting mechanism includes two sliding rods 3. The two sliding rods 3 and the two round rods 4 are slidably connected within the mounting cavities of the two fixed blocks 2. The ends of the two sliding rods 3 that are far apart are outside the fixed blocks 2, and the ends of the two round rods 4 that are far apart are also outside the fixed blocks 2. The ends of the two round rods 4 that are close together are threaded with a bidirectional screw 5. The length of the bidirectional screw 5 is greater than the sum of the lengths of the two round rods 4. The bidirectional screw 5 is rotatably connected to the inner wall of the mounting cavity of the fixed block 2 via a bearing. A driving mechanism is provided on the outer side of the bidirectional screw 5. Welding mechanisms are provided on both the left and right sides of the fixed blocks 2. Each welding mechanism includes a support plate 6. The ends of the sliding rods 3 and round rods 4 located outside the fixed blocks 2 are fixedly connected to the support plate 6. A drive motor 7 is fixedly mounted on the outer surface of plate 6. A rotating block 11 is meshed with the output end of the drive motor 7. The rotating block 11 is slidably connected to the outer surface of the support plate 6. A welding head 14 is provided on the outer surface of the rotating block 11. Specifically, a short shaft 8 is fixedly sleeved on the output end of the drive motor 7. The short shaft 8 penetrates the inner wall of the support plate 6 and is rotatably connected to the interior of the support plate 6. A first gear 9 is fixedly sleeved on the outer surface of the short shaft 8. An arc-shaped rack 10 is meshed with the outer surface of the first gear 9. The arc-shaped rack 10... The outer surface is fixedly connected to the rotating block 11. A fixing tube 13 is fixedly installed on the outer surface of the rotating block 11. The welding head 14 is slidably connected to the inside of the fixing tube 13, and the end of the welding head 14 abuts against the joint between the height limit pole column and the crossbeam. A spring 15 is fixedly installed inside the fixing tube 13. The end of the spring 15 is fixedly connected to the welding head 14. An arc-shaped groove is opened on the rotating block 11. A connecting block 12 adapted to the arc-shaped groove is fixedly installed on the outer surface of the support plate 6. The connecting block 12 is slidably connected to the inside of the arc-shaped groove.

[0018] More specifically, the top plate 1 provides the top mounting base for the overall structure, and the two fixed blocks 2 on its outer wall are used to support the telescopic mechanism and the welding mechanism. In the telescopic mechanism, the bidirectional screw 5 cooperates with the drive mechanism to provide telescopic power, and the slide rod 3 plays a guiding and limiting role to prevent the round rod 4 from rotating with the bidirectional screw 5, ensuring that the round rod 4 drives the welding mechanism to slide smoothly and realize the alignment adjustment of the welding mechanism and the height limit bar joint. In the welding mechanism, the support plate 6 serves as the mounting carrier for the drive motor 7 and the rotating block 11. The drive motor 7 drives the first gear 9 to rotate through the short shaft 8. The first gear 9 meshes with the arc-shaped rack 10 to drive the rotating block 11 to rotate around the connecting block 12. The arc-shaped groove of the connecting block 12 and the rotating block 11 cooperates to ensure that the rotating block 11 rotates smoothly around the height limit bar crossbeam. The fixed tube 13 has a built-in spring 15 and constrains the radial displacement of the welding head 14. The spring 15 provides elastic preload to make the welding head 14 adapt to the change of the joint surface of the column and the crossbeam, so that the end of the welding head 14 fits the joint to perform welding.

[0019] The drive mechanism includes a fixed plate 16, which is fixedly connected to the outer surface of the fixed block 2. A power motor 17 is fixedly mounted on the outer surface of the fixed plate 16. The power motor 17 is meshed with the bidirectional screw 5. Specifically, a rotating shaft 18 is fixedly sleeved at the output end of the power motor 17. The rotating shaft 18 passes through the inner wall of the fixed plate 16 and is rotatably connected to the inside of the fixed plate 16. A second gear 19 for transmitting power is fixedly sleeved on the outer surface of the rotating shaft 18. The second gear 19 is located inside the fixed plate 16, and a gear ring 20 is meshed with the side wall of the second gear 19. The gear ring 20 is fixedly sleeved on the outer surface of the bidirectional screw 5.

[0020] More specifically, the fixing plate 16 is used to fix and install the power motor 17, providing a stable installation reference for the drive mechanism; the power motor 17 serves as a power source, driving the second gear 19 to rotate through the rotating shaft 18. The second gear 19 meshes with the gear ring 20 to achieve power transmission, thereby driving the bidirectional screw 5 to rotate smoothly inside the fixing block 2, providing stable power for the telescopic movement of the telescopic mechanism.

[0021] The top plate 1 has an internal equipment cavity containing a clamping mechanism. The clamping mechanism includes a first cylinder 21 fixedly installed inside the top plate 1. Two moving blocks 25 are slidably connected inside the top plate 1. Each of the two moving blocks 25 has a clamping plate 26 fixedly installed at its top. Two connecting rods 23 are hinged between the two moving blocks 25 and the output end of the first cylinder 21. Specifically, a first hinge block 22 is fixedly installed at the output end of the first cylinder 21. The ends of the two connecting rods 23 near the first cylinder 21 are rotatably connected to the first hinge block 22. The ends of the two connecting rods 23 away from the first hinge block 22 are rotatably connected to a second hinge block 24. There are two second hinge blocks 24, which are fixedly installed on the outer surfaces of the two moving blocks 25. The top plate 1 has a sliding groove adapted to the moving blocks 25, and the moving blocks 25 are slidably connected in the sliding groove.

[0022] More specifically, the clamping mechanism is used to fix the height limit bar beam and improve the stability during welding; the first cylinder 21 serves as the clamping power source, and its output end drives the first hinge block 22 to move. The first hinge block 22 cooperates with the second hinge block 24 through two connecting rods 23 to convert linear power into the opposite or opposite movement of two moving blocks 25. The sliding groove inside the top plate 1 provides guidance for the moving blocks 25 to ensure that the moving blocks 25 slide smoothly. The moving blocks 25 drive the clamping plate 26 at the top to move synchronously, realizing the clamping and releasing operation of the height limit bar beam.

[0023] The top plate 1 is rotatably connected to a scissor arm assembly 27 at its bottom end. The end of the scissor arm assembly 27 away from the top plate 1 is rotatably connected to a base plate 30. The movable end of the scissor arm assembly 27 is rotatably connected to two sets of sliders 28. The two sets of sliders 28 are slidably connected to the bottom end of the top plate 1 and the top end of the base plate 30, respectively. Specifically, the bottom end of the top plate 1 and the top end of the base plate 30 are both fixedly installed with guide rails 29 for guiding the sliders 28. There are two sets of guide rails 29. The interior of each set of guide rails 29 is provided with a groove that matches the sliders 28. The two sets of sliders 28 are slidably connected to the interior of the two sets of guide rails 29, respectively.

[0024] More specifically, the base plate 30 provides the bottom support foundation for the overall structure, and the scissor arm assembly 27 is used to connect the top plate 1 and the base plate 30 and realize the lifting and adjustment of the top plate 1, thereby driving the height limit bar beam to adjust to the target welding height; the two sets of guide rails 29 are respectively fixed to the bottom end of the top plate 1 and the top end of the base plate 30, and their internal grooves provide sliding guidance for the slider 28. The slider 28 is rotatably connected to the scissor arm assembly 27 to ensure smooth movement when the scissor arm assembly 27 is extended or retracted, thereby improving the stability and synchronization of the lifting process of the top plate 1.

[0025] The bottom plate 30 has a second cylinder 34 fixedly installed at its top end. The output end of the second cylinder 34 is rotatably connected to the movable end of the scissor arm assembly 27. Specifically, the bottom plate 30 has an arc-shaped block 33 fixedly installed at its top end. The second cylinder 34 is fixedly installed inside the arc-shaped block 33. The output end of the second cylinder 34 has a movable block 35 fixedly installed. The interior of the movable block 35 is rotatably connected to the movable end of the scissor arm assembly 27.

[0026] More specifically, the arc-shaped block 33 is used to fix the second cylinder 34. The second cylinder 34 serves as the lifting power source for the scissor arm assembly 27. Its output end is rotatably connected to the scissor arm assembly 27 through the movable block 35, ensuring that the power of the second cylinder 34 is stably transmitted to the scissor arm assembly 27, driving the scissor arm assembly 27 to extend or retract, thereby realizing the height adjustment of the top plate 1 and the height limit bar crossbeam.

[0027] The base plate 30 is fixedly equipped with casters 31 at its bottom end and a handle 32 at its top end. Specifically, the casters 31 are fixed to the bottom end of the base plate 30, providing mobility for the entire equipment and making it convenient for operators to push the equipment to the target welding position, and the orientation of the equipment can be flexibly adjusted. The handle 32 is fixed to the top end of the base plate 30, providing a force application point for operators, making it convenient for operators to push the equipment and adjust its position, thus improving the ease of movement of the equipment.

[0028] Working principle and usage process of this utility model: First, the operator places the height limit bar beam on the two support plates 6, and at this time the height limit bar beam will be located between the two clamping plates 26. Then the operator starts the first cylinder 21. At this time, the output end of the first cylinder 21 drives the first hinge block 22 to move. Since the two connecting rods 23 are respectively hinged to the first hinge block 22 and the two second hinge blocks 24, the first hinge block 22 will pull the second hinge block 24 through the connecting rods 23. At the same time, the two second hinge blocks 24 will respectively drive the two moving blocks 25 to slide towards each other along the internal sliding groove of the top plate 1. Then the two clamping plates 26 move synchronously with the moving blocks 25 and clamp and fix the beam.

[0029] The operator then pushes handle 32 to move the entire equipment to the target position. After that, the operator starts the second cylinder 34. At this time, the output end of the second cylinder 34 pulls the scissor arm assembly 27 through the movable block 35. Since the upper and lower ends of the scissor arm assembly 27 are rotatably connected to the top plate 1 and the bottom plate 30 respectively, and the two sets of sliders 28 slide along the guide rails 29 at the bottom end of the top plate 1 and the top end of the bottom plate 30 respectively, the scissor arm assembly 27 drives the top plate 1 to rise steadily during deformation. At the same time, the clamped crossbeam rises synchronously. After the crossbeam rises to the target height, the operator assembles the two side columns with the foundation pile and makes the outer surface of the column fit with the outer surface of the crossbeam. After completing the above operations, the operator starts the power motor 17. At this time, the rotating shaft 18 drives the second gear 19 to rotate. Since the second gear 19 meshes with the toothed ring 20 fixedly sleeved on the outer surface of the bidirectional screw 5, the bidirectional screw 5 rotates inside the fixed block 2. Since the two round rods 4 are threadedly sleeved with the bidirectional screw 5, and the round rods 4 and the sliding rods 3 are slidably connected to the fixed block 2 and jointly fixed to the support plate 6, when the bidirectional screw 5 rotates, the two round rods 4 drive the two side support plates 6 and the welding mechanism to move in opposite directions until the end of the welding head 14 abuts against the joint between the crossbeam and the column. The operator then simultaneously starts both drive motors 7. The output of drive motor 7 rotates forward, driving the short shaft 8 and the first gear 9 to rotate synchronously in the forward direction. Since the first gear 9 meshes with the arc-shaped rack 10, the arc-shaped rack 10 will drive the rotating block 11 to slide and rotate forward along the connecting block 12. When the rotating block 11 drives the welding head 14 to rotate 180 degrees in the forward direction, drive motor 7 immediately drives the short shaft 8 and the first gear 9 to rotate in the reverse direction. Because the first gear 9 rotates in the reverse direction, the arc-shaped rack 10 moves in the reverse direction, driving the rotating block 11 to slide and rotate in the reverse direction. At this point, the rotating block 11 will drive the welding head 14 to rotate 360 ​​degrees in the reverse direction. During this process, the welding head 14 will perform full-circumference welding on the joint between the crossbeam and the column. Due to the elastic pre-tightening effect of the spring 15, the welding head 14 will always be in contact with the curved surface of the joint. After the rotating block 11 drives the welding head 14 to rotate 360 ​​degrees in the opposite direction, the welding head 14 will stop welding. At the same time, the drive motor 7 will immediately drive the short shaft 8 and the first gear 9 to rotate forward again, so that the arc rack 10 drives the rotating block 11 to slide and rotate 180 degrees in the forward direction to complete the reset. Finally, the operator starts the first cylinder 21 to release the clamp 26, and then starts the second cylinder 34 to lower the top plate 1, thus completing the installation and welding operation of the height limit bar.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for installing highway height restriction poles, comprising a top plate (1), characterized in that: The top plate (1) has fixing blocks (2) at both the front and rear ends of its outer wall. The fixing blocks (2) have an installation cavity inside. Two sliding rods (3) and two round rods (4) are slidably connected in the installation cavities of the two fixing blocks (2). The ends of the two sliding rods (3) and the two round rods (4) that are far apart from each other are located outside the fixing blocks (2). The ends of the two round rods (4) that are close to each other are threaded with a bidirectional screw (5). The bidirectional screw (5) is rotatably connected to the inner wall of the installation cavity of the fixing block (2) through a bearing. Welding mechanisms are provided on both the left and right sides of the fixed block (2). The welding mechanism includes a support plate (6). The ends of the sliding rod (3) and the round rod (4) located outside the fixed block (2) are fixedly connected to the support plate (6). A drive motor (7) is fixed on the surface of the support plate (6). A short shaft (8) is fixedly sleeved on the output end of the drive motor (7). The short shaft (8) passes through the inner wall of the support plate (6) and is rotatably connected to it. A first gear (9) is fixedly sleeved on the outer surface of the short shaft (8). An arc-shaped rack (10) meshes with the side wall of the first gear (9). A rotating block (11) is fixed on the outer surface of the arc-shaped rack (10). An arc-shaped groove is opened on the rotating block (11). A connecting block (12) adapted to the arc-shaped groove is fixed on the outer surface of the support plate (6). The connecting block (12) is slidably connected in the arc-shaped groove. A welding head (14) is provided on the outer surface of the rotating block (11).

2. The highway height restriction pole installation and welding equipment according to claim 1, characterized in that: The bidirectional screw (5) is provided with a driving mechanism on its outer side. The driving mechanism includes a fixed plate (16). The fixed plate (16) is fixedly connected to the upper outer surface of the fixed block (2). A power motor (17) is fixedly installed on the outer surface of the fixed plate (16). A rotating shaft (18) is fixedly sleeved at the output end of the power motor (17). The rotating shaft (18) passes through the inner wall of the fixed plate (16) and is rotatably connected to the inside of the fixed plate (16). A second gear (19) for transmitting power is fixedly sleeved on the outer surface of the rotating shaft (18). The second gear (19) is located inside the fixed plate (16), and a toothed ring (20) is meshed with the side wall of the second gear (19). The toothed ring (20) is fixedly sleeved on the outer surface of the bidirectional screw (5).

3. The highway height restriction pole installation and welding equipment according to claim 1, characterized in that: The top plate (1) has an equipment cavity inside, and a clamping mechanism is provided inside the equipment cavity. The clamping mechanism includes a first cylinder (21) fixedly installed inside the top plate (1). Two moving blocks (25) are slidably connected inside the top plate (1). A clamping plate (26) is fixedly installed at the top of each of the two moving blocks (25). Two connecting rods (23) are hinged between the two moving blocks (25) and the output end of the first cylinder (21).

4. The highway height restriction pole installation and welding equipment according to claim 1, characterized in that: The bottom end of the top plate (1) is rotatably connected to a scissor arm assembly (27), and the end of the scissor arm assembly (27) away from the top plate (1) is rotatably connected to a bottom plate (30). The movable end of the scissor arm assembly (27) is rotatably connected to two sets of sliders (28), and the two sets of sliders (28) are slidably connected to the bottom end of the top plate (1) and the top end of the bottom plate (30) respectively.

5. The highway height restriction pole installation and welding equipment according to claim 4, characterized in that: The top of the base plate (30) is fixedly installed with a second cylinder (34), and the output end of the second cylinder (34) is rotatably connected to the movable end of the scissor arm assembly (27).

6. The highway height restriction pole installation and welding equipment according to claim 4, characterized in that: The bottom end of the base plate (30) is fixedly equipped with casters (31), and the top end of the base plate (30) is fixedly equipped with a handle (32).

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