Automatic welding device for rigid directly-buried pipe

Abstract

The invention relates to an automatic welding device for a rigid directly-buried pipe, which comprises an automatic welding trolley, a control assembly, a pipe clamp, a rotating bearing, a telescopic mechanical arm, a walking wheel, an automatic welding device, an adjustable biting tool and a lifting unit, traveling wheels are arranged at the bottom of the automatic welding trolley, an automatic welding device is arranged at the top of the automatic welding trolley, telescopic mechanical arms are symmetrically arranged on the outer surfaces of the two sides of the automatic welding trolley, adjustable biting tools are arranged at the ends of the telescopic mechanical arms, and pipeline tongs are arranged on the two sides of the adjustable biting tools in the length direction. The method has the beneficial effects that the welding quality of the pipeline is effectively controlled, the welding quality of each section of pipeline is guaranteed, construction is facilitated, the working efficiency is improved, and therefore the purposes of saving time, reducing the labor intensity of workers and guaranteeing the construction quality are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of external direct buried pipe network, and in particular to an automatic welding device for rigid direct buried pipes. Background Art

[0002] At present, when constructing rigid direct buried pipes for external networks, manual or mechanical rotary welding of rigid direct buried pipes is usually adopted on site. If there is groundwater during the butt welding construction of rigid direct buried pipes, the working conditions on the construction site will cause inconvenience to manual welding and mechanical welding. At the same time, rigid direct buried pipes are usually long, and the horizontality of rigid straight-through pipes cannot be guaranteed. In addition, the terrain is complex, and large-scale lifting equipment cannot be stationary for a long time to assist in adjusting the welding construction, which affects the welding quality and also poses a safety hazard to the welding construction.

[0003] The Chinese invention patent with authorization announcement number CN113695807A discloses "a kind of automatic pipeline welding equipment and welding method". The patent adopts a machine to limit and clamp the square steel pipe and weld it after butt joint. During welding, it ensures that the welding position is always in a tight state, and there is no need to manually move the butt joint position, which reduces the burden on the staff. However, the patent cannot move freely, the equipment is not flexible, and it is not suitable for butt welding of rigid direct buried pipes in outdoor direct buried pipe networks. In addition, the clamping method in the patent is limited and only applies to small pipe fittings processed in factories. It cannot limit and clamp large pipes in outdoor pipe networks, and cannot perform butt welding on large pipes. The horizontality of large pipe welding cannot be guaranteed, and the welding effect of large pipes cannot be guaranteed. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a rigid direct buried pipe automatic welding device. The rigid direct buried pipe automatic welding device can automatically weld the joints of two steel pipes. At the same time, the direction and position of the pipeline can be adjusted by using the lifting device on the device, thereby effectively controlling the welding quality of the pipeline and ensuring the welding quality of each section of the pipeline. This not only facilitates construction but also improves work efficiency, thereby achieving the purpose of saving time, reducing manual labor intensity, and ensuring construction quality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rigid direct buried pipe automatic welding device comprises an automatic welding trolley, a control integration, a pipe clamp, a rotating bearing, a telescopic mechanical arm, a traveling wheel, an automatic welder, an adjustable bite and a lifting unit. The control integration controls the automatic welding trolley, the bottom of the automatic welding trolley is provided with traveling wheels, the top is provided with an automatic welder, and telescopic mechanical arms are symmetrically provided on the outer surfaces of both sides. The ends of the telescopic mechanical arms are provided with adjustable bites, and pipe clamps are provided on both sides of the length of the adjustable bite. The lifting unit is provided at the rear end of the automatic welding trolley.

[0007] Furthermore, the control integration controls the front and rear movement, left and right movement, and lifting and hoisting control assembly of the automatic welding device.

[0008] Furthermore, the lifting unit is divided into two parts, which are respectively arranged on both sides of the tail end of the automatic welding trolley, and the lifting units on both sides correspond to the telescopic mechanical arms on both sides.

[0009] Furthermore, the lifting unit includes a lifting boom, a lifting jib and a hook. The lifting boom is arranged at the tail end of the automatic welding trolley, the lifting jib is arranged on the top of the lifting boom, and the hook is arranged at the end of the lifting jib.

[0010] Furthermore, the automatic welder is arranged between the telescopic mechanical arms on both sides.

[0011] Furthermore, at least two of the pipe clamps are arranged on one side of the adjustable bite, and the spacing between the pipe clamps is adjustable on the adjustable bite.

[0012] Furthermore, a rotary bearing is arranged inside the pipe clamp.

[0013] Furthermore, the traveling wheel is a universal wheel with a brake.

[0014] Furthermore, the specific steps of the construction method of the rigid direct buried pipe automatic welding device are as follows:

[0015] S1. First, place the rigid direct buried pipe in the pipe pit, and drive the automatic welding device to the position of the rigid direct buried pipe through the control integration. Use the universal wheel with brake to reach the position where the rigid direct buried pipe needs to be welded regardless of the walking conditions in the foundation pit. The universal wheel brakes and stops the automatic welding device.

[0016] S2. The telescopic mechanical arms on both sides of the automatic welding trolley extend to both sides, adjust the distance between the pipe clamp and the adjustable bit, use the lifting units on both sides of the automatic welding trolley to lift the rigid direct buried pipes that need to be connected on both sides, place the rigid direct buried pipes on both sides into the pipe clamp, adjust the hook positions of the lifting units on both sides, move the hooks to the far end of the rigid direct buried pipe welding and fix them to ensure the horizontality of the rigid direct buried pipe;

[0017] S3. Align the welding part of the rigid direct buried pipe with the automatic welder, and adsorb the rubber leather block of the pipe clamp and the adjustable bite on the surface of the rigid direct buried pipe to fix the rigid direct buried pipe. The pipe clamp and the rubber leather block of the adjustable bite cooperate with each other, and the radius can be adjusted at any time for bite fixation without considering the diameter of the rigid direct buried pipe. The telescopic mechanical arm adjusts the distance between the automatic welding device and the rigid direct buried pipe for easy operation and construction;

[0018] S4. Horizontally butt-join two rigid direct buried pipes and use an automatic welder to automatically weld them. After welding 1 / 5 of the distance of the circular opening, adjust the direction of the rigid direct buried pipe by using a telescopic mechanical arm, pipe clamp, rotating bearing and adjustable bite, and rotate to complete the next 1 / 5 opening until all the welds of the rigid direct buried pipe are completed;

[0019] S5. After welding is completed, the automatic welding trolley is controlled by the integrated control system to place the welded pipe at the construction location, and then returns to carry out welding construction of the next section of the pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The automatic welding trolley can be used for seam welding, which is suitable for different terrain environments and has a wide range of applications. It has a built-in lifting unit to assist in welding construction, which can ensure the construction quality of direct buried pipe welding, improve the welding construction effect, and is easy for operators to operate;

[0022] 2) The device has a simple structure, convenient operation, integrated control, high welding construction flexibility, high welding efficiency, rapid welding, and high degree of automation;

[0023] 3) Automatic welding reduces the labor intensity of construction workers, reduces workload, improves work efficiency, and makes welding construction flexible and convenient, highly practical. It effectively guarantees the quality of welding welds and welding construction quality, and has high economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an automatic welding device for rigid direct buried pipes of the present invention.

[0025] Figure 2 It is a structural front view of an automatic welding device for rigid direct buried pipes according to the present invention.

[0026] In the figure: 1. Automatic welding trolley; 2. Control integration; 3. Pipe clamp; 4. Rotary bearing; 5. Telescopic mechanical arm; 6. Travel wheel; 7. Automatic welding device; 8. Adjustable bite; 9. Lifting boom; 10. Lifting jib; 11. Hook; 12. Rigid direct buried pipe. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figure 1-Figure 2As shown, the working principle of the structure of an automatic welding device for rigid direct buried pipes: the walking wheels 6 of the automatic welding device can move freely in the pipe pit under different working conditions, and the operation is flexible and convenient. The rigid direct buried pipes 12 that need to be welded on both sides are lifted by the lifting boom 9, the lifting arm 10 and the hook 11, and the rigid direct buried pipes 12 that need to be welded on both sides are rotated and fixed by using the telescopic mechanical arm 5, the pipe clamp 3, the rotating bearing 4 and the adjustable bite 8, and the butt welds of the rigid direct buried pipes 12 are welded by the automatic welder 7. The control integration completes the automatic control, and the welding efficiency is high. During the welding process, the lifting boom 9, the lifting arm 10 and the hook 11 clamp the welding distal end of the rigid direct buried pipe 12, and the rigid direct buried pipes 12 on both sides are guaranteed to be horizontal, thereby improving the welding quality, reducing the workload of the construction personnel, and improving the welding level. It is not affected by the terrain and construction environment, has strong practicality, a wide range of applications, and high economic value.

[0029] like Figure 1-Figure 2 As shown, an automatic welding device for rigid direct buried pipes includes an automatic welding trolley 1, a control integration 2, a pipe clamp 3, a rotating bearing 4, a telescopic mechanical arm 5, a walking wheel 6, an automatic welder 7, an adjustable bite 8, a lifting boom 9, a lifting jib 10 and a hook 11. The control integration 2 controls the automatic welding trolley 1. The bottom of the automatic welding trolley 1 is provided with a walking wheel 6, and the movement of the device is realized by the walking wheel. The top is provided with an automatic welder 7. After the rigid direct buried pipe 12 is fixed, the welding rod is filled for welding. A device is provided. The outer surfaces of both sides are symmetrically provided with telescopic mechanical arms 5. The telescopic mechanical arms 5 are a device for docking and fixing two rigid direct buried pipes 12 in combination with different diameters and different distances of the rigid direct buried pipes 12. The end face of the telescopic mechanical arm 5 is provided with an adjustable bite 8. The pipe clamp 3 is provided on both sides of the length of the adjustable bite 8. The pipe clamp 3 is used to fix rigid direct buried pipes 12 of different diameters. It is a clamp that effectively fixes the rigid direct buried pipe 12. The tail end of the automatic welding trolley 1 is provided with a lifting unit.

[0030] Furthermore, the control integration 2 controls the control assembly of the front and rear, left and right movement, and lifting and hoisting of the automatic welding device.

[0031] like Figure 2 As shown, further, the lifting unit is divided into two parts, which are respectively arranged on both sides of the tail end of the automatic welding trolley 1, and the lifting units on both sides correspond to the telescopic mechanical arms 5 on both sides. The lifting units, the telescopic mechanical arms 5, and the pipe clamps 3 cooperate to install and fix the rigid direct buried pipes 12 that need to be welded on both sides. During welding, the lifting units on both sides respectively clamp the distal ends of the rigid direct buried pipes 12, and cooperate with the telescopic mechanical arms 5 and the pipe clamps 3 on both sides to keep the rigid direct buried pipes 12 level during welding, thereby improving the welding quality.

[0032] like Figure 2As shown, further, the lifting unit includes a lifting boom 9, a lifting jib 10 and a hook 11, the lifting boom 9 is arranged at the tail end of the automatic welding trolley 1, the lifting jib 10 is arranged on the top of the lifting boom 9, and the hook 11 is arranged at the end of the lifting jib 10. The lifting unit composed of the lifting boom 9, the lifting jib 10 and the hook 11 is arranged on the automatic welding device, and cooperates with the automatic welding device to perform welding work. There is no need to consider the lifting construction conditions. The lifting work is flexible to operate, and the lifting and welding work are completed together, which saves the laying progress of the rigid direct buried pipe 12 and improves the construction efficiency.

[0033] like Figure 1 As shown, further, the automatic welder 7 is arranged in the middle of the telescopic mechanical arms 5 on both sides, and the automatic welder 7 is responsible for the butt welding of the two rigid direct buried pipes 12. The telescopic mechanical arms 5 on both sides fix the rigid direct buried pipes 12, and the automatic welder 7 welds the weld in the middle to achieve automatic welding.

[0034] Furthermore, at least two pipe clamps 3 are provided on one side of the adjustable bite 8, and the distance between the two pipe clamps 3 on the adjustable bite 8 can be freely adjusted to ensure that the welded rigid direct buried pipe 12 is balanced and stable at the proximal end of the welding, thereby improving the welding quality.

[0035] like Figure 1 As shown, further, a rotary bearing 4 is arranged on the inner side of the pipe clamp 3, and the rotary bearing 4 is a key component for connecting the pipe clamp 3 and the telescopic mechanical arm 5 to rotate the rigid direct buried pipe 12. When the rigid direct buried pipe 12 rotates to weld other weld positions, the rotary bearing 4 reduces friction and improves the surface quality of the rigid direct buried pipe.

[0036] Furthermore, the travel wheel 6 is a universal wheel with a brake, and the universal wheel with a brake can ignore the terrain requirements, so that the automatic welding device can move freely on the construction site.

[0037] like Figure 1-Figure 2 As shown, further, the construction method of the rigid direct buried pipe automatic welding device has the following specific steps:

[0038] S1. First, place the rigid direct buried pipe 12 in the pipe pit, and drive the automatic welding device to the position of the rigid direct buried pipe 12 through the control integration 2. Use the walking wheel 6 with brake to reach the position where the rigid direct buried pipe 12 needs to be welded without considering the walking conditions in the foundation pit. The walking wheel 6 is braked to stop, and the automatic welding device stops;

[0039] S2. The telescopic mechanical arms 5 on both sides of the automatic welding trolley 1 are extended to both sides, and the distance between the pipe clamp 3 and the adjustable bite 8 is adjusted. The lifting units on both sides of the automatic welding trolley 1 are used to lift the rigid direct buried pipes 12 that need to be docked on both sides, and the rigid direct buried pipes 12 on both sides are placed in the pipe clamp 3. The positions of the hooks 11 of the lifting units on both sides are adjusted, and the hooks 11 are moved to the far end of the rigid direct buried pipe 12 for welding and clamping. The lifting units cooperate with the pipe clamp 3 and the adjustable bite 8 to ensure the horizontality of the rigid direct buried pipe 12.

[0040] S3, align the welding part of the rigid direct buried pipe 12 with the automatic welding device 7, and adsorb the rubber leather block of the pipe clamp 3 and the adjustable bite 8 on the surface of the rigid direct buried pipe 12 to fix the rigid direct buried pipe 12. The pipe clamp 3 and the rubber leather block of the adjustable bite 8 are adsorbed and matched, and the diameter of the rigid direct buried pipe 12 can be adjusted at any time for bite fixation without considering the diameter of the rigid direct buried pipe 12. The telescopic mechanical arm 5 adjusts the distance between the automatic welding device and the rigid direct buried pipe 12 for easy operation and construction;

[0041] S4, horizontally butt-joint two rigid direct buried pipes 12, and automatically weld them using the automatic welder 7. After welding 1 / 5 of the distance of the circular opening, adjust the direction of the rigid direct buried pipe 12 by the telescopic mechanical arm 5, the pipe clamp 3, the rotating bearing 4 and the adjustable bite 8, and rotate to complete the next 1 / 5 opening until all the welds of the rigid direct buried pipe 12 are completed;

[0042] S5. After the welding is completed, the control integration 2 controls the automatic welding trolley 1 to place the welded rigid direct buried pipeline 12 at the construction position, and then returns to perform the welding construction of the next section of the rigid direct buried pipeline 12.

[0043] The above description is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic welding device for rigid direct buried pipes, comprising an automatic welding trolley, a control assembly, a pipe clamp, a rotary bearing, a telescopic mechanical arm, a traveling wheel, an automatic welder, an adjustable bite and a lifting unit, characterized in that: The control integratedly controls the automatic welding trolley, the automatic welding trolley is provided with walking wheels at the bottom, an automatic welder is provided at the top, telescopic mechanical arms are symmetrically provided on the outer surfaces of both sides, adjustable bites are provided at the ends of the telescopic mechanical arms, pipe clamps are provided on both sides of the adjustable bite length, and a lifting unit is provided at the rear end of the automatic welding trolley.

2. The automatic welding device for rigid direct buried pipe according to claim 1 is characterized in that: The control integration controls the front and rear movement, left and right movement, and lifting and hoisting control assembly of the automatic welding device.

3. The automatic welding device for rigid direct buried pipe according to claim 1 is characterized in that: The lifting unit is divided into two parts, which are respectively arranged on both sides of the tail end of the automatic welding trolley, and the lifting units on both sides correspond to the telescopic mechanical arms on both sides.

4. The automatic welding device for rigid direct buried pipe according to claim 1 or 3, characterized in that: The lifting unit comprises a lifting boom, a lifting jib and a hook. The lifting boom is arranged at the tail end of the automatic welding trolley, the lifting jib is arranged on the top of the lifting boom, and the hook is arranged at the end of the lifting jib.

5. The automatic welding device for rigid direct buried pipe according to claim 1 is characterized in that: The automatic welder is arranged between the telescopic mechanical arms on both sides.

6. The automatic welding device for rigid direct buried pipe according to claim 1 is characterized in that: At least two of the pipeline clamps are arranged on one side of the adjustable bite, and the distance between the pipeline clamps is adjustable on the adjustable bite.

7. The automatic welding device for rigid direct buried pipe according to claim 1 or 6, characterized in that: A rotating bearing is arranged inside the pipeline clamp.

8. The automatic welding device for rigid direct buried pipe according to claim 1 is characterized in that: The traveling wheel is a universal wheel with brakes.

9. The construction method of the rigid direct buried pipe automatic welding device according to claim 1 is characterized in that: The specific steps of the construction method of the rigid direct buried pipe automatic welding device are as follows: S1. First, place the rigid direct buried pipe in the pipe pit, and drive the automatic welding device to the position of the rigid direct buried pipe through the control integration. Use the universal wheel with brake to reach the position where the rigid direct buried pipe needs to be welded regardless of the walking conditions in the foundation pit. The universal wheel brakes and stops the automatic welding device. S2. The telescopic mechanical arms on both sides of the automatic welding trolley extend to both sides, adjust the distance between the pipe clamp and the adjustable bit, use the lifting units on both sides of the automatic welding trolley to lift the rigid direct buried pipes that need to be connected on both sides, place the rigid direct buried pipes on both sides into the pipe clamp, adjust the hook positions of the lifting units on both sides, move the hooks to the far end of the rigid direct buried pipe welding and fix them to ensure the horizontality of the rigid direct buried pipe; S3. Align the welding part of the rigid direct buried pipe with the automatic welder, and adsorb the rubber leather block of the pipe clamp and the adjustable bite on the surface of the rigid direct buried pipe to fix the rigid direct buried pipe. The pipe clamp and the rubber leather block of the adjustable bite cooperate with each other, and the radius can be adjusted at any time for bite fixation without considering the diameter of the rigid direct buried pipe. The telescopic mechanical arm adjusts the distance between the automatic welding device and the rigid direct buried pipe for easy operation and construction; S4. Horizontally butt-join two rigid direct buried pipes and use an automatic welder to automatically weld them. After welding 1 / 5 of the distance of the circular opening, adjust the direction of the rigid direct buried pipe by using a telescopic mechanical arm, pipe clamp, rotating bearing and adjustable bite, and rotate to complete the next 1 / 5 opening until all the welds of the rigid direct buried pipe are completed; S5. After welding is completed, the automatic welding trolley is controlled by the integrated control system to place the welded pipe at the construction location, and then returns to carry out welding construction of the next section of the pipe.

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