Guardrail welding device for road maintenance

Abstract

The utility model relates to the technical field of welding, in particular to a guardrail welding device for road maintenance, which comprises a workbench, a clamping component is arranged on one side of the workbench, and the clamping component is used for clamping and fixing guardrails at different positions and at different angles and comprises a clamp. The two clamps are used for clamping and fixing the portions, with different sizes, of the guardrail, a five-axis mechanical arm is arranged at the top of the workbench, one end of the five-axis mechanical arm is fixedly connected with a welding gun, and the welding portions, with different sizes, heights and angle positions, of the guardrail can be stably clamped and fixed through the clamping assembly; according to the overall structure, the universal range of the device is widened, the practicability of the device is improved, then the welding gun is driven by the five-axis mechanical arm to conduct welding work on the multi-angle positions of the guardrail conveniently, the guardrail welding efficiency is improved, the manual labor intensity is reduced, and the manual operation risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, and specifically to a guardrail welding device for road maintenance. Background Art

[0002] With the acceleration of the urbanization process and the continuous expansion of the transportation network, the total mileage of highways in China has exceeded 5 million kilometers, including more than 1.7 million kilometers of expressways, and the scale of urban roads and national and provincial trunk roads is also increasing. As a key line of defense for road safety, guardrails play an important role in preventing vehicles from running off the road and reducing accident injuries. However, frequent traffic accidents, natural environmental erosion (such as rain corrosion and ultraviolet aging), and long-term heavy vehicle rolling have led to an increasing damage rate of guardrails year by year. According to statistics, the proportion of secondary accidents caused by damaged guardrails in the total number of road traffic accidents nationwide reaches 15%-20% every year.

[0003] Regarding guardrail welding devices, there are many existing technologies, for example:

[0004] According to the Chinese patent application number: CN202421310738.3, specifically a guardrail plate welding device. It includes a frame assembly and a welding assembly. The frame assembly includes a frame base and a guardrail plate body. The welding assembly includes a power box. The top of the frame base is connected with a support substrate, and the top of the frame base is connected with support columns. An installation top plate is arranged above the frame base, and the installation top plate is connected with the frame base through the support columns. The top of the positioning top plate is connected with a stable sliding rod. A limiting rod is arranged inside the power box, a sliding block is arranged on the outer circle of the limiting rod, and a linkage block is connected to the bottom of the sliding block. After placing the guardrail plate body on the support substrate, start the operation of the first push rod, and then the first push rod moves and drives the positioning top plate to gradually approach the guardrail plate body, and the guardrail plate body is pressed and fixed through the positioning top plate.

[0005] During a traffic accident, the guardrails vertically installed on the road may be deformed and damaged. Thereafter, it is necessary to manually hold a welding device to the roadside to weld the damaged part of the guardrail. During the welding process, in order to ensure the welding accuracy, it is necessary for manual support and adjustment to align the guardrail to be welded with the damaged part for welding. This process results in a relatively high manual labor intensity, and the stability during the guardrail welding process depends on the firmness of manual support, which is likely to affect the welding quality of the guardrail. Summary of the Utility Model

[0006] In view of the technical problems existing in the prior art, the utility model provides a guardrail welding device for road maintenance, which solves the problems of slow welding speed, poor weld consistency, potential safety hazards in the traditional technology for welding guardrails vertically assembled on the roadside (inconvenient disassembly and limited welding space), and the inconvenience of positioning and fixing the deformed welding end positions during the welding process, thus affecting the welding quality.

[0007] To achieve the above object, the utility model provides a guardrail welding device for road maintenance, including a workbench. A clamping assembly is arranged on one side of the workbench. The internal structure of the clamping assembly clamps and fixes part of the guardrail through horizontal movement, vertical movement and angular rotation, wherein: the clamping assembly includes two relatively moving jigs, and the openings of the two jigs face outward, which are used for adaptively clamping the guardrail in the vertically assembled state on the road and adapting to support the alignment of the welding parts of the guardrail to be welded.

[0008] The beneficial effects of the utility model are as follows:

[0009] 1. Before welding, the clamping assembly can stably clamp and fix, and position and align the welding parts of the guardrail with different sizes, heights and angular positions vertically assembled on the road, effectively ensuring the accurate positioning of the welding parts of the guardrail, reducing subsequent welding errors, and improving the welding quality of the guardrail.

[0010] 2. During the welding process, the five-axis robotic arm drives the welding gun to weld the guardrail at multiple angular positions. Through the automated operation of the robotic arm, the welding efficiency is improved, and the maintenance period is greatly shortened; at the same time, the dependence on highly skilled welders is reduced, and the labor cost is lowered.

[0011] On the basis of the above technical solutions, the utility model can be further improved as follows.

[0012] Preferably, a storage frame is fixedly connected to the top of the workbench, the bottom of the five-axis robotic arm is fixedly connected to the inside of the storage frame, a five-axis robotic arm is arranged on the top of the workbench, one end of the five-axis robotic arm is fixedly connected to a welding gun, and the five-axis robotic arm realizes the multi-directional welding work of the welding gun. The bottom of the five-axis robotic arm is fixedly connected to the inside of the storage frame.

[0013] The beneficial effect of adopting the above further solution is that when not in use, the five-axis robotic arm is folded and stored inside the storage frame, which is convenient for equipment transportation, saves space, is convenient for the device to be applied to emergency repairs in the wild, remote sections or urban power outage environments, extends the single operation time, and reduces the downtime waiting cost.

[0014] Preferably, one end inside the fixture is threadedly connected to a bidirectional threaded rod, the bidirectional threaded rod is rotatably connected inside a rotating seat, the upper end outside the bidirectional threaded rod is threadedly connected to a first nut, a second slider is arranged on one side of the rotating seat, a sleeve is fixedly connected to one side of the second slider, the rod part of the rotating seat rotates inside the sleeve, a pin is snap-fitted inside both the rod part of the rotating seat and the sleeve, a guide frame is arranged outside the second slider, the second slider slides inside the guide frame, a bolt is slidably connected inside the second slider, and a second nut is threadedly connected to one end outside the bolt.

[0015] The beneficial effect of adopting the above further scheme is that through the above structure, it is convenient to adjust the height and angular position of the fixture, so that the fixture can stably clamp and fix the welding parts of guardrails with different sizes, heights, and angular positions, increasing the versatility of the device.

[0016] Preferably, a first slider is fixedly connected to the bottom of the guide frame, a fixed seat is arranged outside the first slider, the first slider slides inside the fixed seat, a one-way threaded rod is rotatably connected to one side of the first slider, the one-way threaded rod is threadedly connected to the fixed seat, and the fixed seat is fixedly connected to one side of the workbench.

[0017] The beneficial effect of adopting the above further scheme is that it is convenient to laterally fine-tune the clamping position of the fixture, effectively improving the positioning accuracy of the welding end position of the guardrail, and thus improving the welding quality.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] By driving two fixtures to move towards or away from each other through the bidirectional threaded rod in the clamping assembly, the guardrail posts, crossbars or bent parts in the vertically assembled state on the roadside can be quickly clamped. By rotating one end of the rotating seat inside the sleeve, the clamping angle of the fixture can be adjusted, and the inclined and arc-shaped guardrails can be clamped at multiple angles to avoid welding positioning errors caused by the deviation of the installation angle of the guardrail. By sliding the second slider up and down inside the guide frame, guardrails of different heights can be adapted. The overall structure increases the general range of the device and improves the practicability of the device. Then, by driving the welding gun through a five-axis robotic arm, it is convenient to weld the guardrail at multiple angular positions, improving the welding efficiency of the guardrail, reducing the manual labor intensity, and reducing the manual operation risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Isometric schematic diagram of one side of the overall structure of the present utility model;

[0021] Figure 2 Isometric schematic diagram of the other side of the overall structure of the present utility model;

[0022] Figure 3 Schematic structural diagram of the clamping assembly of the present utility model;

[0023] Figure 4 Schematic side view structural diagram of the clamping assembly of the present utility model.

[0024] The meanings of each label in the figure are as follows:

[0025] 1. Workbench; 11. Storage frame;

[0026] 2. Clamping assembly; 21. Fixed seat; 22. First slider; 23. Guide frame; 24. Second slider; 25. Rotating seat; 26. Fixture; 27. Bidirectional threaded rod; 28. First nut; 29. Sleeve; 210. Plug pin; 211. Bolt; 212. Second nut; 213. Unidirectional threaded rod;

[0027] 3. Five-axis robotic arm; 4. Welding gun. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0029] Please refer to Figures 1-4 As shown, this embodiment provides a guardrail welding device for road maintenance, including a workbench 1. In order to maintain the stability of the guardrail and the accuracy of the welding position during the welding process, a clamping assembly 2 is provided on one side of the workbench 1. The internal structure of the clamping assembly 2 clamps and fixes some positions of the guardrail through horizontal movement, vertical movement, and angular rotation. Among them: The clamping assembly 2 includes a fixture 26. The openings of the two fixtures 26 are arranged outward, which are used to adapt to the clamping of the guardrail in the vertical assembly state of the road and to adapt to the alignment of the welding joints of the guardrail to be welded. The two fixtures 26 move relatively or away from each other at the same time to adjust the distance between the two fixtures 26, and clamp and fix different size parts of the guardrail. The clamping assembly 2 is suitable for the stable clamping work of most guardrails, and the overall structure increases the general range of the device and improves the practicability of the device.

[0030] In summary, the improvement of this embodiment lies in:

[0031] The clamping assembly 2 can position and fix the guardrails in the assembled state on the roadside at different angles, different sizes, and different height positions, and adjust and align the welding joints. There is no need to disassemble the assembled guardrails, saving the problem of large occupation of welding space caused by horizontal welding. The overall structure increases the general range of the device and improves the practicality of the device. Then, the five-axis robotic arm 3 drives the welding gun 4 to facilitate the welding work at multiple angles of the guardrail, improving the welding efficiency of the guardrail, reducing the labor intensity, and reducing the risk of manual operation. Through the core advantages of flexible clamping, intelligent welding, and portable movement, the device systematically solves the pain points such as low efficiency, poor adaptability, and high dependence on manual labor in traditional guardrail welding operations.

[0032] On this basis, other structures also need to be disclosed in detail, such as:

[0033] A storage box 11 is fixedly connected to the top of the workbench 1. A five-axis robotic arm 3 is arranged on the top of the workbench 1. The bottom of the five-axis robotic arm 3 is fixedly connected to the inside of the storage box 11. One end of the five-axis robotic arm 3 is fixedly connected to a welding gun 4. The five-axis robotic arm 3 is used to realize the multi-directional welding work of the welding gun 4. Through the automated operation of the robotic arm, the welding efficiency is improved, and the maintenance period is greatly shortened; at the same time, the dependence on highly skilled welders is reduced, and the labor cost is reduced. When not in use, the five-axis robotic arm 3 is folded and stored inside the storage box 11, which is convenient for equipment transportation and saves space.

[0034] One end inside the fixture 26 is threadedly connected to a bidirectional threaded rod 27. The bidirectional threaded rod 27 is rotatably connected to the inside of a rotating seat 25. The upper end on the outside of the bidirectional threaded rod 27 is threadedly connected to a first nut 28. By rotating the bidirectional threaded rod 27, the two fixtures 26 move towards or away from each other to adjust the distance between the two fixtures 26, and different-sized guardrail parts can be quickly clamped, solving the adaptation problem of the traditional fixture with a "one-size-fits-all" approach. By tightening the first nut 28, the bidirectional threaded rod 27 is locked to prevent the bidirectional threaded rod 27 from rotating due to vibration and affecting the clamping effect of the fixture 26.

[0035] A second slider 24 is arranged on one side of the rotating seat 25. One side of the second slider 24 is fixedly connected to a sleeve 29. The rod part of the rotating seat 25 rotates inside the sleeve 29. A pin 210 is snap-fitted inside both the rod part of the rotating seat 25 and the inside of the sleeve 29. By rotating one end of the rotating seat 25 inside the sleeve 29 and then inserting the pin 210 into the sleeve 29 and the rotating seat 25 to lock the angle of the rotating seat 25, the fixture 26 can be multi-angularly fitted and clamped to the guardrail column, crossbar, or bent part, avoiding welding positioning errors caused by the deviation of the installation angle of the guardrail.

[0036] A guide frame 23 is provided on the outside of the second slider 24. The second slider 24 slides inside the guide frame 23. A bolt 211 is slidably connected inside the second slider 24. One outer end of the bolt 211 is threadedly connected with a second nut 212. By sliding the second slider 24 inside the guide frame 23, the height of the fixture 26 is adjusted to clamp the guardrail parts at different height positions. The combined design of the bolt 211 and the second nut 212 can quickly lock the position of the second slider 24 after the fixture 26 is positioned, avoiding displacement caused by vibration during the welding process.

[0037] The bottom of the guide frame 23 is fixedly connected with a first slider 22. A fixed seat 21 is provided on the outside of the first slider 22. The first slider 22 slides inside the fixed seat 21. One side of the first slider 22 is rotatably connected with a one-way threaded rod 213. The one-way threaded rod 213 is threadedly connected with the fixed seat 21. The fixed seat 21 is fixedly connected to one side of the workbench 1. By rotating the one-way threaded rod 213, the first slider 22 is pushed to move horizontally inside the fixed seat 21, facilitating the horizontal fine-tuning of the clamping position of the fixture 26, effectively improving the positioning accuracy of the welding end position of the guardrail, and thus improving the welding quality.

[0038] The workbench 1 is equipped with an intelligent control system and an independent power supply. The equipped control system can automatically match parameters such as welding current, voltage, and speed according to the material and thickness of the guardrail, avoiding over-welding or under-welding problems caused by manual setting. At the same time, the weld quality is monitored in real time through sensors, and the welding path is dynamically adjusted. The independent power supply gets rid of the limitation of external power supply, is suitable for emergency repair in the wild, remote sections or urban power outage environments, extends the single operation time, and reduces the downtime waiting cost.

[0039] In summary, the working principle of this solution is as follows:

[0040] First, move the device to the desired position, and then place the two clamps 26 outside the part of the guardrail to be clamped. During this process, by rotating the bidirectional threaded rod 27, the two clamps 26 move towards or away from each other to adjust the distance between the two clamps 26, enabling quick clamping of guardrail parts of different sizes and solving the "one-size-fits-all" adaptation problem of traditional clamps. Then, tighten the first nut 28 to lock the bidirectional threaded rod 27. According to the angle of different clamping parts, rotate one end of the rotating seat 25 inside the sleeve 29, and then insert the pin 210 into the sleeve 29 and the rotating seat 25 to lock the angle of the rotating seat 25, so that the clamp 26 can perform multi-angle fitting clamping on the guardrail column, crossbar or bent part, avoiding welding positioning errors caused by deviation in the installation angle of the guardrail. For different height positions, adjust the height of the clamp 26 by sliding the second slider 24 inside the guide frame 23, enabling the clamp 26 to clamp the guardrail parts at different height positions. The combined design of the bolt 211 and the second nut 212 can quickly lock the position of the second slider 24 after the clamp 26 is positioned. After the clamp 26 clamps the object, rotate the unidirectional threaded rod 213 to push the first slider 22 to move horizontally inside the fixed seat 21, facilitating horizontal fine-tuning of the part driven by the clamp 26, effectively improving the positioning accuracy of the welding end position of the guardrail and thus improving the welding quality. Then, control the five-axis robotic arm 3 and the welding gun 4 through the control system in the workbench 1. The five-axis robotic arm 3 enables the welding gun 4 to achieve 360° rotation + multi-axis translation, easily covering complex welding positions such as the top surface, side surface, and corners of the guardrail. Then, the workbench 1 powers on the welding gun 4, and the guardrail is welded by the welding gun 4. With its core advantages such as flexible clamping, intelligent welding, and portable movement, this device systematically solves the pain points in traditional guardrail welding operations, such as low efficiency, poor adaptability, and high dependence on manual labor. It is applicable to the maintenance of guardrails in multiple scenarios such as urban roads, highways, and rural roads, and has significant engineering application value and market promotion potential.

[0041] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and do not serve to limit the present utility model. Without departing from the spirit and scope of the present utility model, various changes and improvements will occur to the present utility model, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A guardrail welding device for road maintenance, comprising a workbench (1), characterized in that: On one side of the workbench (1), a clamping assembly (2) is provided. The internal structure of the clamping assembly (2) clamps and fixes the position of the guardrail part through lateral movement, vertical movement, and angular rotation. Among them: The clamping assembly (2) includes two relatively moving jigs (26). The openings of the two jigs (26) face outward and are used to adaptively clamp the guardrail in the vertical assembly state of the road and to align the welding joints of the guardrail to be welded for support.

2. The guardrail welding device for road maintenance according to claim 1, wherein: A storage box (11) is fixedly connected to the top of the workbench (1).

3. The welding device for guardrails used in road maintenance according to claim 1, wherein: One end inside the jig (26) is threadedly connected to a bidirectional threaded rod (27). The bidirectional threaded rod (27) is rotatably connected inside a rotating seat (25). The upper end outside the bidirectional threaded rod (27) is threadedly connected to a first nut (28).

4. A guardrail welding device for road maintenance according to claim 3, characterized in that: On one side of the rotating seat (25), a second slider (24) is provided. One side of the second slider (24) is fixedly connected to a sleeve (29). The rod part of the rotating seat (25) rotates inside the sleeve (29). A pin (210) is snap-fitted inside both the rod part of the rotating seat (25) and the inside of the sleeve (29).

5. The guardrail welding device for road maintenance according to claim 4, characterized in that: Outside the second slider (24), a guide frame (23) is provided. The second slider (24) slides inside the guide frame (23). A bolt (211) is slidably connected inside the second slider (24). One end outside the bolt (211) is threadedly connected to a second nut (212).

6. The welding device for guardrails used in road maintenance according to claim 5, characterized in that: The bottom of the guide frame (23) is fixedly connected to a first slider (22). Outside the first slider (22), a fixed seat (21) is provided. The first slider (22) slides inside the fixed seat (21). One side of the first slider (22) is rotatably connected to a unidirectional threaded rod (213). The unidirectional threaded rod (213) is threadedly connected to the fixed seat (21). The fixed seat (21) is fixedly connected to one side of the workbench (1).

7. The welding device for guardrails used in road maintenance according to claim 1, characterized in that: On the top of the workbench (1), a five-axis robotic arm (3) is provided. One end of the five-axis robotic arm (3) is fixedly connected to a welding gun (4). The five-axis robotic arm (3) enables the welding gun (4) to perform multi-directional welding work. The bottom of the five-axis robotic arm (3) is fixedly connected inside the storage box (11).

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