Shield tunneling machine cutterhead single-linkage cutter box welding and fixing device

Abstract

The utility model belongs to the technical field of shield tunneling machine cutterhead connected cutter box welding, and particularly relates to a shield tunneling machine cutterhead single connected cutter box welding fixing device which comprises a fixing base and a box body to be welded, the fixing base is fixed through bolts, and a first supporting plate is arranged on one side of the upper surface of the fixing base. A first supporting plate is arranged on one side of the upper surface of the fixing base, a second supporting plate is arranged on the other side of the upper surface of the first supporting plate, the first supporting plate is parallel to the second supporting plate, a positioning groove is formed in the upper surface of the fixing base and located between the first supporting plate and the second supporting plate, and the box to be welded is placed on the inner side of the positioning groove. The left cutter box block and the right cutter box block are rapidly positioned through the positioning groove in the bottom of the fixing base, the left cutter box block and the right cutter box block are pressed through the jacking screw to guarantee the boundary dimension, the inner cavity dimension is adjusted by applying force outwards through the inner supporting mechanism, and the inner supporting mechanism is controlled through the threaded rod on the top to prevent operation.

Description

Technical Field

[0001] This utility model belongs to the field of shield machine cutterhead connecting box welding technology, specifically relating to a shield machine cutterhead single connecting box welding and fixing device. Background Technology

[0002] The single-unit cutterhead box of a tunnel boring machine (TBM) is mainly used to install single-unit roller cutters and other cutting tools, providing support and fixation for the tools. This ensures that the tools maintain the correct position and attitude during the TBM's tunneling process, enabling them to effectively cut the rock and soil in front of the tunnel face.

[0003] In existing technologies, the manufacturing process of a single cutterhead box for a tunnel boring machine (TBM) is complex, and deformation can occur during welding. It is difficult to control critical dimensions, and a significant amount of time is required for adjustments during splicing and welding. Furthermore, the large number of single cutterhead boxes typically makes it difficult to complete welding tasks on time and with high quality. This also hinders the improvement of welding speed and impacts large-scale welding operations. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a welding and fixing device for a single cutter box of a tunnel boring machine cutterhead, which can achieve stable clamping and fixing of the single cutter box during welding.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A welding and fixing device for a single cutterhead box of a tunnel boring machine includes a fixed base and a box to be welded. The fixed base is fixed by bolts. A first support plate is provided on one side of the upper surface of the fixed base, and a second support plate is provided on the other side of the upper surface of the first support plate. The first and second support plates are parallel. A positioning groove is formed on the upper surface of the fixed base, and the positioning groove is placed between the first and second support plates. The box to be welded is placed inside the positioning groove and between the first and second support plates. A plurality of internally threaded cylinders are evenly arranged on the surface of the second support plate. A tightening screw is screwed through the inner side of each internally threaded cylinder. The end of the tightening screw presses against the outer side of the box to be welded. Two internal support mechanisms are suspended inside the box to be welded, and the internal support mechanisms are used to support the internal space of the box to be welded.

[0007] Furthermore, multiple reinforcing ribs are evenly arranged on the outer sides of the first and second support plates.

[0008] Furthermore, the internal support mechanism includes a support bar that is horizontally suspended inside the box to be welded. T-shaped grooves are provided on both sides of the surface of the support bar, and a telescopic rod is slidably installed inside the T-shaped groove.

[0009] Furthermore, the telescopic rod extends beyond the end surface of the supporting crossbar, and protective grooves are provided on the opposite ends of the two telescopic rods. The ends of the two telescopic rods respectively abut against the inner walls of the two sides of the box to be welded.

[0010] Furthermore, a mounting cylinder is provided at the center of the upper surface of the support crossbar, a threaded rod is rotatably mounted at the end of the mounting cylinder, and a knob is provided at the top of the threaded rod.

[0011] Furthermore, a lifting block is screwed onto the surface of the threaded rod, and connecting rods are symmetrically hinged on both sides of the lifting block. The ends of the two connecting rods opposite to the lifting block are respectively hinged to two telescopic rods.

[0012] Compared with existing technologies, the advantages of this invention are as follows: This invention provides a method for effectively fixing a single-unit tool box during welding. The left and right tool box blocks are quickly positioned using a positioning groove at the bottom of the fixed base. Tightening screws press the left and right tool box blocks together to ensure their external dimensions. An internal support mechanism applies an outward force to adjust the internal cavity size, and a threaded rod at the top controls the internal support mechanism to prevent manipulation. The structure is stable and reliable, enabling rapid and stable welding of single-unit tool box blocks and improving welding efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation three-dimensional structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the base and support plate structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal support mechanism of this utility model;

[0016] Figure 4 For the present utility model Figure 3 A schematic diagram of the explosion structure.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Fixed base; 11. Positioning groove; 2. First support plate; 3. Second support plate; 31. Internal threaded cylinder; 4. Reinforcing rib plate; 5. Tightening screw; 6. Box to be welded; 7. Internal support mechanism; 71. Support crossbar; 72. T-shaped slide; 73. Mounting cylinder; 74. Telescopic rod; 741. Protective groove; 75. Threaded rod; 76. Knob; 77. Lifting block; 78. Connecting rod. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] refer to Figure 1 and Figure 2 As shown, a welding and fixing device for a single cutterhead box of a tunnel boring machine includes a fixed base 1 and a box 6 to be welded. The fixed base 1 is fixed by bolts and remains fixed during welding. A first support plate 2 is provided on one side of the upper surface of the fixed base 1, and a second support plate 3 is provided on the other side of the upper surface of the first support plate 2. The first support plate 2 and the second support plate 3 are parallel, and the space between the first support plate 2 and the second support plate 3 is larger than the size of the box 6 to be welded, so as to facilitate its placement. A positioning groove 11 is opened on the upper surface of the fixed base 1, and the positioning groove 11 is placed between the first support plate 2 and the second support plate 3. The box 6 to be welded is placed in the positioning groove. 11. Inside, the bottom of the box to be welded 6 is limited, and the box to be welded 6 is placed between the first support plate 2 and the second support plate 3. Multiple internal threaded cylinders 31 are evenly arranged on the surface of the second support plate 3. The internal threaded cylinders 31 are horizontally arranged. A tightening screw 5 is screwed through the inner side of the internal threaded cylinder 31. The end of the tightening screw 5 is pressed against the outer side of the box to be welded 6. The tightening screw 5 is rotated to control its axial dimension. Then, the outer side of the box to be welded 6 is pressed and fixed by the tightening screw 5. Two internal support mechanisms 7 are suspended inside the box to be welded 6. The internal support mechanisms 7 are used to support the internal space of the box to be welded 6 to ensure the internal space of the box.

[0021] refer to Figure 1 and Figure 2 As shown, multiple reinforcing ribs 4 are evenly arranged on the outer sides of the first support plate 2 and the second support plate 3 to increase the strength of the first support plate 2 and the second support plate 3.

[0022] refer to Figure 1 , Figure 3 and Figure 4 As shown, the inner support mechanism 7 includes a support bar 71 that is horizontally suspended inside the box 6 to be welded. T-shaped grooves 72 are provided on both sides of the surface of the support bar 71. A telescopic rod 74 is slidably installed inside the T-shaped grooves 72. The T-shaped grooves 72 can ensure that the support bar 71 can only extend and retract, so as to ensure its stable movement.

[0023] Among them, the telescopic rod 74 extends beyond the end surface of the supporting crossbar 71, and the two telescopic rods 74 are provided with protective grooves 741 on the opposite ends to increase friction with the inner wall of the box and achieve an anti-slip effect. The ends of the two telescopic rods 74 respectively abut against the inner walls on both sides of the box 6 to be welded in order to adjust the inner cavity size of the box 6 to be welded.

[0024] refer to Figure 3 and Figure 4 As shown, a mounting cylinder 73 is provided at the center of the upper surface of the support crossbar 71. A threaded rod 75 is rotatably mounted at the end of the mounting cylinder 73. A knob 76 is provided at the top of the threaded rod 75. The threaded rod 75 is vertically positioned above the support crossbar 71 so that it can be operated from the top.

[0025] The threaded rod 75 has a lifting block 77 screwed onto its surface. The lifting block 77 has connecting rods 78 symmetrically hinged on both sides. The ends of the two connecting rods 78 opposite to the lifting block 77 are respectively hinged to two telescopic rods 74. By rotating the threaded rod 75, the lifting block 77 is adjusted along the axis of the threaded rod 75. Then, by controlling the height of the lifting block 77, the extension and retraction of the two support crossbars 71 are controlled in sync with the connecting rods 78, so that their ends abut against the inner wall of the box and the force on both sides is even.

[0026] The working principle of this utility model is as follows: First, the fixed base 1 is fixed. Then, the box 6 to be welded is placed inside the positioning groove 11. The space between the first support plate 2 and the second support plate 3 is larger than the box 6 to be welded. Therefore, the box 6 to be welded can be smoothly placed between the first support plate 2 and the second support plate 3. Rotate the tightening screw 5 so that the end of the tightening screw 5 is pressed against the side of the box 6 to be welded through the thread engagement, thereby controlling the external dimensions of the box 6 to be welded. Then, the inner support mechanism 7 is suspended and placed inside the box 6 to be welded, so that the inner support mechanism 7 outputs a horizontal direction. Rotate the connecting rod 78 to drive the threaded rod 75 to rotate. The threaded rod 75 drives the lifting block 77 to move to adjust the height of the lifting block 77. Then, the connecting rod 78 controls the movement of the two telescopic rods 74 so that the two telescopic rods 74 move outward until the protective groove 741 can contact the inner wall of the box 6 to be welded, thereby adjusting the internal cavity dimensions of the box 6 to be welded. At this time, both the inside and outside of the box 6 to be welded are effectively controlled to ensure stability during welding.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A welding and fixing device for a single cutterhead box of a tunnel boring machine, comprising a fixing base (1) and a box body (6) to be welded, characterized in that: The fixed base (1) is fixed by bolts. A first support plate (2) is provided on one side of the upper surface of the fixed base (1), and a second support plate (3) is provided on the other side of the upper surface of the first support plate (2). The first support plate (2) and the second support plate (3) are parallel. A positioning groove (11) is provided on the upper surface of the fixed base (1). The positioning groove (11) is placed between the first support plate (2) and the second support plate (3). The box to be welded (6) is placed inside the positioning groove (11) and between the first support plate (2) and the second support plate (3). A plurality of internal threaded cylinders (31) are evenly provided on the surface of the second support plate (3). A tightening screw (5) is screwed through the inner side of the internal threaded cylinder (31). The end of the tightening screw (5) is pressed against the outside side of the box to be welded (6). Two internal support mechanisms (7) are suspended inside the box to be welded (6). The internal support mechanisms (7) are used to support the internal space of the box to be welded (6).

2. The shield tunneling machine cutterhead single-unit cutter box welding and fixing device according to claim 1, characterized in that: Multiple reinforcing ribs (4) are evenly arranged on the outer sides of the first support plate (2) and the second support plate (3).

3. The shield machine cutterhead single-unit cutter box welding and fixing device according to claim 1, characterized in that: The inner support mechanism (7) includes a support bar (71) that is horizontally suspended inside the box (6) to be welded. T-shaped grooves (72) are provided on both sides of the surface of the support bar (71). A telescopic rod (74) is slidably installed inside the T-shaped groove (72).

4. The shield machine cutterhead single-unit cutter box welding and fixing device according to claim 3, characterized in that: The telescopic rod (74) extends beyond the end surface of the supporting crossbar (71), and the two telescopic rods (74) are provided with protective grooves (741) on the opposite ends of their ends. The ends of the two telescopic rods (74) respectively abut against the inner walls of the two sides of the box to be welded (6).

5. The shield machine cutterhead single-unit cutter box welding and fixing device according to claim 4, characterized in that: An installation cylinder (73) is provided at the center of the upper surface of the support crossbar (71), and a threaded rod (75) is rotatably installed at the end of the installation cylinder (73), and a knob (76) is provided at the top of the threaded rod (75).

6. The shield machine cutterhead single-unit cutter box welding and fixing device according to claim 5, characterized in that: The threaded rod (75) has a lifting block (77) screwed onto its surface. The lifting block (77) has connecting rods (78) symmetrically hinged on both sides. The ends of the two connecting rods (78) opposite to the lifting block (77) are respectively hinged to two telescopic rods (74).

Images