Welding device for a shield cutter head and method of use thereof

Abstract

The present application relates to the technical field of welding device for tunnel construction, in particular to a welding device for shield cutterhead and its using method. It comprises: a movable base, a vertical support rod is fixed on the base; a movable rod is arranged on the support rod, the movable rod is horizontally arranged, a first driving mechanism is arranged on the support rod for driving the movable rod to move along the length direction of the support rod; a mounting frame is arranged on the movable rod, a second driving mechanism is arranged on the movable rod for driving the mounting frame to move along the length direction of the movable rod, a welding torch is hinged to the mounting frame, and a third driving mechanism is arranged for driving the welding torch to rotate around the hinge. The height and left-right position of the welding torch can be adjusted by the first driving mechanism and the second driving mechanism, so that the welding torch moves along the track of the weld, and the weld is welded. The up-down angle of the welding torch can be adjusted by the third driving mechanism, and the weld on different welding surfaces can be welded.

Description

Technical Field

[0001] This invention relates to the technical field of welding equipment for tunnel construction, and specifically to a welding device for shield tunnel cutterheads and its usage method. Background Technology

[0002] As a crucial piece of construction equipment in underground engineering, the shield tunneling cutterhead plays an increasingly important role in tunnel construction. Because the cutterhead is an ultra-large and ultra-heavy structural component, it is generally manufactured using a modular process, where the cutterhead is divided into sections and then assembled and welded on-site at the tunnel construction site. This assembly process involves a large amount of welding work and requires high welding quality. While manual welding is unavoidable due to the complex structure of the cutterhead's modular components, many welded areas with long welds and large weld bevel sizes can still be welded automatically.

[0003] However, existing automated shield welding equipment cannot adjust the position and angle of the welding torch according to the welding position of the shield cutterhead, thus affecting the welding efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a welding device for tunnel boring machine cutterheads and its usage method, solving the problem that existing welding devices cannot adjust the position and angle of the welding torch, resulting in low welding efficiency.

[0005] The technical solution to achieve the above objectives is:

[0006] This invention provides a welding device for a tunnel boring machine cutterhead, comprising:

[0007] A movable base, on which a support rod is vertically fixed;

[0008] A movable rod is provided on the support rod, the movable rod is horizontally arranged, and the support rod is also provided with a first driving mechanism for driving the movable rod to move along the length direction of the support rod;

[0009] A mounting bracket is provided on the movable rod, and the movable rod is further provided with a second drive mechanism for driving the mounting bracket to move along the length direction of the movable rod, and

[0010] A welding torch hinged to the mounting bracket and a third drive mechanism for driving the welding torch to rotate about the hinge.

[0011] Furthermore, the first driving component includes:

[0012] The first lead screw has a first groove along its length on one side of the support rod, and the first lead screw is disposed in the first groove.

[0013] A first motor is mounted on the base and driven by the first lead screw, used to drive the first lead screw to rotate around its own axis.

[0014] The first movable block is disposed in the first slide groove and threaded onto the outer surface of the first lead screw. The first lead screw can be rotated to drive the first movable block to move in the first slide groove. The movable rod is connected to the first movable block.

[0015] Furthermore, it also includes a guide rod and an auxiliary component that is slidably sleeved on the guide rod. The guide rod is vertically fixed on the base, and the auxiliary component is fixed on the movable rod.

[0016] Furthermore, the second drive mechanism includes:

[0017] The second lead screw has a second sliding groove on one side of the moving rod along the length direction, and the second lead screw is disposed in the second sliding groove;

[0018] A second motor is mounted on the moving rod and driven by the second lead screw, used to drive the second lead screw to rotate around its own axis;

[0019] The second movable block is disposed in the second slide groove and threaded onto the outer surface of the second lead screw. The second lead screw drives the second movable block to move within the second slide groove by rotation. The mounting bracket is fixed on the second movable block.

[0020] Furthermore, the third drive mechanism includes:

[0021] A slidable support frame is mounted on the movable rod, and the sliding direction of the support frame is parallel to the sliding direction of the mounting frame.

[0022] An electric telescopic rod is hinged at one end to the support frame. The telescopic end of the electric telescopic rod is hinged to the bottom surface of the welding torch. The electric telescopic rod controls the tilt angle of the welding torch by adjusting the telescopic length of the telescopic end.

[0023] Furthermore, the movable rod has a limiting groove along its length, and the support frame is provided with a sliding plate, which is slidably disposed in the limiting groove so that the sliding plate can move along the length of the movable rod;

[0024] Both the limiting groove and the sliding plate have a cross-shaped cross section.

[0025] The present invention also provides a method for using a welding device for a tunnel boring machine cutterhead, which specifically includes the following steps:

[0026] Move the welding device to one side of the shield cutterhead to be welded;

[0027] Determine the trajectory, initial position, and end position of the weld seam on the shield cutterhead welding surface;

[0028] The height and left-right position of the mounting frame are adjusted by the first drive mechanism and the second drive mechanism so that the welding gun on the mounting frame corresponds to the initial position of the weld.

[0029] Then, the welding torch is started, and the position of the mounting frame is adjusted by the first and second drive mechanisms so that the welding torch performs welding operations along the weld seam trajectory.

[0030] Once the welding torch has moved along the weld seam to the end position, turn off the welding torch.

[0031] Then repeat the above steps until all welds are completed.

[0032] Furthermore, when the welding surface of the shield cutterhead has an inclination angle, the welding torch is driven by the third driving mechanism to rotate around the hinge point with the mounting frame, so that the welding torch and the welding surface are perpendicular to each other.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] By setting up the first and second drive mechanisms, the height and lateral position of the welding torch can be adjusted, allowing the torch to move along the weld seam trajectory for welding. Furthermore, by setting up the third drive mechanism, the vertical tilt angle of the welding torch can be adjusted, enabling welding on different welding surfaces. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the welding device for the shield cutterhead of the present invention.

[0036] Figure 2 This is a schematic diagram of the first drive mechanism of the welding device for the shield cutterhead of the present invention.

[0037] Figure 3 This is a schematic diagram of the second drive mechanism of the welding device for the shield cutterhead of the present invention.

[0038] Figure 4 This is a schematic diagram of the third drive mechanism of the welding device for the shield cutterhead of the present invention.

[0039] Figure 5 The present invention relates to a welding device for shield tunnel cutterheads. Figure 4 Enlarged view of section A.

[0040] Figure 6 This is a schematic diagram of the auxiliary component structure of the welding device for the shield cutterhead of the present invention.

[0041] Legend: 1. Base; 2. First drive mechanism; 21. Support rod; 210. Groove; 22. First motor; 23. Pulley; 24. Belt; 25. First lead screw; 26. First bearing; 27. First moving block; 3. Second drive mechanism; 31. Moving rod; 310. Limiting groove; 32. Second motor; 33. Second lead screw; 34. Second bearing; 35. Second moving block; 4. Connecting plate; 5. Mounting bracket; 6. 61. Welding torch; 62. Third bearing; 63. Mounting base; 7. Insert rod; 7. Third drive mechanism; 71. Support frame; 72. Positioning plate; 73. Electric telescopic rod; 74. Mounting block; 75. Rotating rod; 76. Slide plate; 761. Limiting plate; 7610. Slot; 762. Ball bearing; 8. Guide rod; 9. Auxiliary components; 91. Slider; 92. Roller frame; 93. Roller; 10. Mounting plate; 11. Self-locking caster wheel; 12. Rotating shaft. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] See Figure 1 This invention provides a welding device and its method for using a tunnel boring machine (TBM) cutterhead, solving the problem of low welding efficiency caused by the inability to adjust the position and angle of the welding torch in existing welding devices. To address this issue, this invention uses a first driving mechanism to adjust the height of the welding torch and a second driving mechanism to adjust its lateral position. The combination of these two mechanisms allows the welding torch to move along the weld seam trajectory on the TBM cutterhead welding surface, thereby welding the seam. When the welding surface of the TBM cutterhead has an inclination angle, a third driving mechanism adjusts the vertical inclination angle of the welding torch, ensuring that the welding torch is perpendicular to the welding surface and guaranteeing welding quality.

[0044] The following description, in conjunction with the accompanying drawings, illustrates a welding device for a tunnel boring machine cutterhead and its method of use.

[0045] See Figure 1 This diagram shows the overall structure of the welding device for the shield tunnel cutterhead of the present invention. (See attached diagram.) Figure 2 This diagram shows a schematic of the first drive mechanism of the welding device for the shield tunnel cutterhead of the present invention. (See also...) Figure 3 This diagram shows a schematic of the second drive mechanism of the welding device for the shield tunnel cutterhead of the present invention. (See also...) Figure 4 This diagram shows the third drive mechanism of the welding device for the shield cutterhead of the present invention. The following is in conjunction with... Figures 1 to 4 This invention describes a welding device for a tunnel boring machine cutterhead and its usage method.

[0046] like Figures 1 to 4 As shown, a welding device for a tunnel boring machine cutterhead according to the present invention includes:

[0047] A movable base 1, on which a support rod 21 is vertically fixed;

[0048] A movable rod 31 is provided on the support rod 21, the movable rod 31 is horizontally arranged, and the support rod 21 is also provided with a first driving mechanism 2 for driving the movable rod 31 to move along the length direction of the support rod 21;

[0049] A mounting bracket 5 is provided on the movable rod 31, and the movable rod 31 is further provided with a second drive mechanism 3 for driving the mounting bracket 5 to move along the length direction of the movable rod 31, and

[0050] The welding torch 6 is hinged to the mounting bracket 5, and a third drive mechanism 7 is used to drive the welding torch 6 to rotate around the hinge. The welding torch 6 can be an integrated welding machine or a separate welding machine. For a separate welding machine, only the welding torch head needs to be installed at the position of the welding torch 6.

[0051] In one specific embodiment, the first driving component 2 includes:

[0052] The first lead screw 25 is provided in the first sliding groove along the length direction on one side of the support rod 21;

[0053] The first motor 22 is mounted on the base 1 and drivenly connected to the first lead screw 25, and is used to drive the first lead screw 25 to rotate around its own axis.

[0054] The first movable block 27 is disposed in the first slide groove and threaded onto the outer surface of the first lead screw 25. The first lead screw 25 can be rotated to drive the first movable block 27 to move in the first slide groove. The movable rod 31 is connected to the first movable block 27.

[0055] In one specific embodiment, it further includes a guide rod 8 and an auxiliary component 9 slidably sleeved on the guide rod 8. The guide rod 8 is vertically fixed on the base 1, and the auxiliary component 9 is fixed on the movable rod 31.

[0056] In one specific embodiment, there are two support rods 2, spaced apart on the base 1. Correspondingly, there are also two first lead screws 25 and two first moving blocks 27.

[0057] Specifically, the base 1 is equipped with at least four self-locking casters 11 at its bottom to ensure that the base 1 can move on the ground. When moved to the construction position, the self-locking casters 11 are locked to prevent the device from moving during the construction welding process and affecting the welding effect.

[0058] Specifically, the base 1 is an inverted U-shape, with mounting plates 10 horizontally positioned at both ends. The base 1 and mounting plates 10 together form a "Z" shape, and four self-locking casters 11 are located at the bottom of their respective mounting plates 10. The bottom of the base 1 has a stepped connecting plate 4, including a vertical surface and two horizontal surfaces, one higher than the other. The first motor 22 is fixed to one of the corresponding horizontal surfaces. The lower ends of two first lead screws 25 pass through the base 1 and extend above the connecting plate 4. Pulleys 23 are fixed to the lower ends of the two first lead screws 25. The two pulleys 23 are at the same height and connected by a belt 24. One pulley 23 is driven by the output of the first motor 22, and the lower end of the other pulley 23 has a rotating shaft 24, which is rotatably connected to the connecting plate 4.

[0059] Specifically, there are two guide rods 8 and auxiliary components 9, with the two guide rods 8 spaced apart and located on one side of the corresponding support rod 2.

[0060] Specifically, the auxiliary component 9 includes: a slider 91 slidably mounted on the guide rod 8, the slider 91 being fixed to the corresponding side of the moving rod 31; a roller frame 92 fixed to the corresponding side of the slider 91; and a rotatable roller 93 mounted on the roller frame 92. A groove 210 is provided on the corresponding side of the support rod 21, the groove 210 being arranged along the length direction of the support rod 21. The roller 93 is embedded in the groove 210 and can roll along the trajectory of the groove 210. By setting the auxiliary mechanism 9 and the guide rod 8, the stability of the moving rod 31's up-and-down movement is increased. By setting the roller 93, the roller 93 rolls along the trajectory of the groove 210 on the support rod 21, further increasing the stability of the moving rod 31.

[0061] In one specific embodiment, the second drive mechanism 3 includes:

[0062] The second lead screw 33 is provided in the second sliding groove along the length direction on one side of the moving rod 31;

[0063] The second motor 32 is mounted on the moving rod 31 and drivenly connected to the second lead screw 33, and is used to drive the second lead screw 33 to rotate around its own axis.

[0064] The second movable block 35 is disposed in the second slide groove and threaded onto the outer surface of the second lead screw 33. The second lead screw 33 drives the second movable block 35 to move in the second slide groove by rotating. The mounting bracket 5 is fixed on the second movable block 35.

[0065] In one specific embodiment, the third drive mechanism 7 includes:

[0066] A slidable support frame 71 is mounted on the movable rod 31, and the sliding direction of the support frame 71 is parallel to the sliding direction of the mounting frame 5.

[0067] An electric telescopic rod 73 is hinged at one end to the support frame 71. The telescopic end of the electric telescopic rod 73 is hinged to the bottom surface of the welding torch 6. The electric telescopic rod 73 controls the tilt angle of the welding torch 6 by adjusting the telescopic length of the telescopic end.

[0068] In one specific embodiment, the movable rod 31 has a limiting groove 310 along its length direction, and the support frame 71 is provided with a sliding plate 76. The sliding plate 76 is slidably disposed in the limiting groove 301 so that the sliding plate 76 can move along the length direction of the movable rod 31.

[0069] Both the limiting groove 310 and the sliding plate 76 have cross-shaped cross sections.

[0070] Specifically, it also includes a mounting base 62 fixed to the bottom of the welding torch 6 and a rotatable insert rod 63 mounted on the mounting base 62. The mounting base 62 is inverted U-shape, and the telescopic end of the electric telescopic rod 73 is connected to the insert rod 63 to achieve a hinged connection between the telescopic end and the welding torch 6.

[0071] Specifically, the limiting groove 310 is formed on the bottom surface of the moving rod 31, and correspondingly, the support frame 71 is also located on the bottom surface of the moving rod 31. The support frame 71 is inverted L-shape, and the sliding plate 76 is set at the top of the horizontal section of the support frame 71. Two positioning plates 72 are spaced apart on the vertical section of the support frame 71, and a rotating rod 75 is rotatably provided between the two positioning plates 72. A mounting block 74 is fixed on the rotating rod 75, and an electric telescopic rod 73 is fixed on the mounting block 74.

[0072] Specifically, the skateboard 76 includes a skateboard body and two limiting plates 761 on its sides. Several slots 7610 are provided on the side of the limiting plates 761 away from the skateboard body, spaced apart along the length of the limiting plates 761. Rolling balls 762 are provided within each 7610, conforming to the inner wall of the limiting groove 310 and rolling within it. By providing the rolling balls 762, the friction between the skateboard 76 and the limiting groove 310 is reduced, thereby ensuring smoother movement of the positioning plate 71.

[0073] Specifically, the first motor 22 and the second motor 32 can rotate in either the forward or reverse direction.

[0074] The present invention also provides a method for using a welding device for a tunnel boring machine cutterhead, specifically including the following steps:

[0075] Move the welding device to one side of the shield cutterhead to be welded;

[0076] Determine the trajectory, initial position, and end position of the weld seam on the shield cutterhead welding surface;

[0077] The height and left and right positions of the mounting frame 5 are adjusted by the first drive mechanism 2 and the second drive mechanism 3 so that the welding gun 6 on the mounting frame 5 corresponds to the initial position of the weld.

[0078] Then, the welding torch 6 is started, and the position of the mounting frame 5 is adjusted by the first drive mechanism 2 and the second drive mechanism 3 so that the welding torch 6 can perform welding operations along the weld seam trajectory.

[0079] After the welding torch 6 moves along the weld seam to the end position, the welding torch 6 is turned off;

[0080] Then repeat the above steps until all welds are completed.

[0081] In one specific embodiment, when the welding surface of the shield cutterhead has an inclination angle, the welding torch 6 is driven by the third driving mechanism 7 to rotate around the hinge point with the mounting frame 5, so that the welding torch 6 is perpendicular to the welding surface.

[0082] The following is a detailed description of the usage process and working principle of a welding device for tunnel cutterheads according to the present invention.

[0083] First, release the lock of the self-locking caster 11, and then push the welding device to move it to the side of the shield cutterhead to be welded.

[0084] The welding torch 6 is moved to the initial position of the weld seam by the first drive mechanism 2 and the second drive mechanism 3, and then activated. Following the weld seam trajectory, the first drive mechanism 2 and the second drive mechanism 3 drive the welding torch to move along the weld seam trajectory, thereby performing welding. This continues until the welding torch 6 reaches the end position of the weld seam. Finally, the welding torch 6 is turned off and moved to the initial position of the next weld seam.

[0085] When welding, the welding torch 6 is perpendicular to the welding surface of the shield cutterhead. The tilt angle of the welding torch 6 is driven by the third drive mechanism 7 to make the welding torch 6 perpendicular to the welding surface.

[0086] The specific method for adjusting the position of the welding torch 6 is as follows: Start the first motor 22, causing it to drive the first lead screw 25 to rotate in the forward or reverse direction. This causes the first moving block 27 to move upward or downward along the axis of the first lead screw 25, thereby moving the moving rod 31 upward or downward, thus adjusting the height of the welding torch 6. Start the second motor 32, causing it to drive the second lead screw 33 to rotate in the forward or reverse direction. This causes the second moving block 35 to move left or right along the axis of the second lead screw 33, thus adjusting the left and right position of the welding torch 6.

[0087] The specific method for adjusting the vertical tilt angle of the welding torch 6 is as follows: Activate the electric telescopic rod 73, extending its telescopic end to push the welding torch 6 upward around the hinge, thus adjusting the tilt angle of the welding torch 6 upward. Then, shorten the telescopic end of the electric telescopic rod 73 to pull the welding torch 6 downward around the hinge, thus adjusting the tilt angle of the welding torch 6 downward.

[0088] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A welding device for a tunnel boring machine cutterhead, characterized in that, include: A movable base (1) on which a support rod (21) is vertically fixed. A movable rod (31) is provided on the support rod (21), the movable rod (31) is horizontally arranged, and the support rod (21) is also provided with a first driving mechanism (2) for driving the movable rod (31) to move along the length direction of the support rod (21). A mounting bracket (5) is provided on the movable rod (31), and the movable rod (31) is further provided with a second drive mechanism (3) for driving the mounting bracket (5) to move along the length direction of the movable rod (31), and A welding torch (6) hinged to the mounting bracket (5) and a third drive mechanism (7) for driving the welding torch (6) to rotate about the hinge.

2. The welding device for a shield tunnel cutterhead according to claim 1, characterized in that, The first driving component (2) includes: The first lead screw (25) is provided with a first groove along the length direction on one side of the support rod (21), and the first lead screw (25) is provided in the first groove; The first motor (22) is mounted on the base (1) and driven to connect with the first lead screw (25), and is used to drive the first lead screw (25) to rotate around its own axis; The first movable block (27) is disposed in the first slide groove and threaded onto the outer surface of the first lead screw (25). The first lead screw (25) can be rotated to drive the first movable block (27) to move in the first slide groove. The movable rod (31) is connected to the first movable block (27).

3. The welding device for a shield tunnel cutterhead according to claim 2, characterized in that, It also includes a guide rod (8) and an auxiliary component (9) that is slidably sleeved on the guide rod (8). The guide rod (8) is vertically fixed on the base (1), and the auxiliary component (9) is fixed on the moving rod (31).

4. The welding device for a shield tunnel cutterhead according to claim 1, characterized in that, The second drive mechanism (3) includes: The second lead screw (33) is provided with a second sliding groove along the length direction on one side of the corresponding side of the moving rod (31), and the second lead screw (33) is provided in the second sliding groove; The second motor (32) is mounted on the moving rod (31) and drivenly connected to the second lead screw (33) for driving the second lead screw (33) to rotate around its own axis; The second movable block (35) is disposed in the second slide groove and threaded onto the outer surface of the second lead screw (33). The second lead screw (33) drives the second movable block (35) to move in the second slide groove by rotating. The mounting bracket (5) is fixed on the second movable block (35).

5. The welding device for a shield tunnel cutterhead according to claim 1, characterized in that, The third drive mechanism (7) includes: A slidable support frame (71) is provided on the moving rod (31), and the sliding direction of the support frame (71) is parallel to the sliding direction of the mounting frame (5). An electric telescopic rod (73) is hinged at one end to the support frame (71). The telescopic end of the electric telescopic rod (73) is hinged to the bottom surface of the welding torch (6). The electric telescopic rod (73) controls the tilt angle of the welding torch (6) by adjusting the telescopic length of the telescopic end.

6. The welding device for a shield tunnel cutterhead according to claim 5, characterized in that, The moving rod (31) has a limiting groove (310) along its length direction, and the support frame (71) is provided with a sliding plate (76). The sliding plate (76) is slidably disposed in the limiting groove (301) so that the sliding plate (76) can move along the length direction of the moving rod (31). The cross-sections of the limiting groove (310) and the sliding plate (76) are both cross-shaped.

7. A method of using the welding device for a tunnel boring machine cutterhead according to claim 1, characterized in that, Specifically, the steps include the following: Move the welding device to one side of the shield cutterhead to be welded; Determine the trajectory, initial position, and end position of the weld seam on the shield cutterhead welding surface; The height and left and right positions of the mounting frame (5) are adjusted by the first drive mechanism (2) and the second drive mechanism (3) so that the welding gun (6) on the mounting frame (5) corresponds to the initial position of the weld. Then start the welding torch (6), and adjust the position of the mounting frame (5) through the first drive mechanism (2) and the second drive mechanism (3) so that the welding torch (6) can perform welding operations along the weld seam trajectory; After the welding torch (6) moves along the weld seam to the end position, the welding torch (6) is turned off. Then repeat the above steps until all welds are completed.

8. The method of using the welding device for the shield cutterhead according to claim 7, characterized in that, When the welding surface of the shield cutterhead has an inclination angle, the welding torch (6) is driven to rotate around the hinge with the mounting frame (5) by the third driving mechanism (7), so that the welding torch (6) is perpendicular to the welding surface.

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