A shield machine cutter box replacement positioning device

Abstract

The utility model relates to the technical field of shield machine maintenance discloses a kind of shield machine cutter box replacement positioning device, including support seat, and the positioning mechanism for the limit of shield machine cutter box is slidably matched and arranged on support seat, and support seat is provided with middle seat below, and the adjusting mechanism is rotatably connected and arranged on middle seat, and two support frames are symmetrically arranged on the both sides of middle seat.In the arc-shaped seat on the middle seat is suitable for the support of shield machine cutter, and by setting multiple spring-connected movable positioning rods on the positioning seat on both sides, automatic adjustment can be made according to the cutter profile, providing stable, accurate pre-positioning and reliable support during cutter box replacement, achieving rapid alignment and installation, significantly improving the safety, accuracy and efficiency of the replacement operation, and reducing labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine maintenance technology, specifically to a tunnel boring machine cutterhead and cutter box replacement and positioning device. Background Technology

[0002] The cutterhead and cutterbox of a tunnel boring machine (TBM) are key components, primarily used for cutting through the soil layers within the tunnel and transporting the cut soil to the subsequent earthmoving system. Their role in tunnel construction is crucial, directly impacting the TBM's operational efficiency, stability, and construction safety. Replacing and repositioning the cutterhead and cutterbox is a critical aspect of TBM maintenance and repair, typically occurring when the cutterhead and cutterbox show signs of wear, damage, or performance degradation after prolonged use. Accurate positioning and operation are essential during cutterhead and cutterbox replacement to ensure a smooth process and maintain the TBM's operational performance.

[0003] When replacing heavy cutterhead boxes in the confined space of a tunnel, the process mainly relies on manual labor and simple tools for positioning and support, which suffers from poor positioning accuracy, installation difficulties, significant safety hazards, and low efficiency. Therefore, those skilled in the art provide a positioning device for replacing cutterhead boxes on a tunnel boring machine to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this utility model is to provide a replacement and positioning device for the cutterhead and cutter box of a tunnel boring machine, so as to solve the problems mentioned in the background art above.

[0005] This utility model provides the following technical solution: a shield machine cutterhead and cutter box replacement and positioning device, including a support base, on which a positioning mechanism for limiting the cutterhead and cutter box of the shield machine is slidably configured, and a middle seat is provided below the support base, on which an adjustment mechanism is rotatably connected, and two support frames are symmetrically arranged on both sides of the middle seat.

[0006] As a preferred embodiment of the above technical solution, an arc-shaped seat is fixedly connected to the support base, and two guide rods are fixedly connected to both sides of the arc-shaped seat in a symmetrical structure. A positioning sleeve is fixedly connected to the bottom of the support base, and the positioning sleeve is movably inserted into the intermediate seat. Multiple T-shaped positioning feet are fixedly connected to the bottom of the support base.

[0007] As a preferred embodiment of the above technical solution, the positioning mechanism includes a positioning seat, and guide sleeves are fixedly connected to both sides of the positioning seat. The inner wall of the guide sleeve is slidably fitted with the outer wall of the guide rod. A hydraulic cylinder is fixedly connected to the side of the positioning seat facing the arc-shaped seat, and the other end of the hydraulic cylinder is fixedly connected to the inner wall of the arc-shaped seat.

[0008] As a preferred embodiment of the above technical solution, the positioning seat is provided with multiple sleeve holes, and a movable positioning rod is slidably fitted through the sleeve holes. A spring is fixedly connected to the inner end of the movable positioning rod, and the other end of the spring is fixedly connected to the inner wall of the sleeve hole.

[0009] As a preferred embodiment of the above technical solution, the adjustment mechanism includes a drive wheel, one end of which is rotatably connected to the inner wall of the intermediate seat via a pin, and a driven wheel is meshed and driven on one side of the drive wheel. A bidirectional lead screw is fixedly connected to the driven wheel, and the bidirectional lead screw is rotatably connected to the inner wall of the intermediate seat.

[0010] As a preferred embodiment of the above technical solution, both ends of the bidirectional lead screw are threadedly connected to adjusting seats, and both sides of the adjusting seats are rotatably connected to adjusting rods, with the other end of the adjusting rods rotatably connected to the support frame.

[0011] As a preferred embodiment of the above technical solution, the support frame is provided with mounting holes, the inner wall of the mounting holes is movably inserted into the T-shaped positioning feet, a positioning pin is threaded through the inner wall of one side of the mounting holes, and a hydraulic support foot is fixedly connected to one end of the support frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features an arc-shaped seat on the middle seat, suitable for supporting the cutterhead of a tunnel boring machine. At the same time, by setting multiple spring-connected movable positioning rods on the positioning seats on both sides, it can automatically adjust according to the shape of the cutterhead, providing stable and accurate pre-positioning and reliable support when replacing the cutterhead and cutter box. This enables rapid alignment and installation, significantly improving the safety, accuracy and efficiency of replacement operations, and reducing labor intensity. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of a replacement positioning device for the cutterhead and cutter box of a tunnel boring machine;

[0015] Figure 2 A schematic diagram of a support base structure for a positioning device for replacing the cutterhead and cutter box of a tunnel boring machine;

[0016] Figure 3 A partial unfolded schematic diagram of the positioning mechanism structure of a positioning device for changing the positioning device of the cutterhead and cutterbox of a tunnel boring machine;

[0017] Figure 4 A partial cross-sectional schematic diagram of the structure, including the adjustment mechanism, of a positioning device for replacing the cutterhead and cutterbox of a tunnel boring machine.

[0018] Figure 5 This is a schematic diagram of the support frame structure for a tunnel boring machine cutterhead and cutter box replacement positioning device.

[0019] In the diagram: 1. Support seat; 2. Positioning mechanism; 3. Intermediate seat; 4. Adjustment mechanism; 5. Support frame; 101. Arc-shaped seat; 102. Guide rod; 103. Positioning sleeve; 104. T-shaped positioning foot; 201. Positioning seat; 202. Guide sleeve; 203. Hydraulic cylinder; 204. Sleeve hole; 205. Movable positioning rod; 206. Spring; 401. Drive wheel; 402. Driven wheel; 403. Double-acting screw; 404. Adjustment seat; 405. Adjustment rod; 501. Mounting hole; 502. Positioning pin; 503. Hydraulic support foot. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figures 1-5 As shown, this utility model provides a technical solution: a shield tunneling machine cutterhead and cutter box replacement and positioning device, including a support base 1, a positioning mechanism 2 for limiting the position of the shield tunneling machine cutterhead and cutter box slidably mounted on the support base 1, an intermediate base 3 below the support base 1, an adjustment mechanism 4 rotatably connected to the intermediate base 3, and two support frames 5 symmetrically arranged on both sides of the intermediate base 3. The support base 1 is made of high-strength alloy steel welded together, with high overall rigidity and a load-bearing capacity ≥100t, suitable for the support requirements of heavy-duty shield tunneling machine cutterheads.

[0022] An arc-shaped seat 101 is set on the intermediate seat 3 to support the cutterhead of the tunnel boring machine. At the same time, by setting multiple movable positioning rods 205 connected by springs 206 on the positioning seats 201 on both sides, it can automatically adjust according to the shape of the cutterhead, so as to provide stable, accurate pre-positioning and reliable support when the cutterhead and cutter box are replaced, realizing rapid alignment and installation, significantly improving the safety, accuracy and efficiency of replacement operations, and reducing labor intensity.

[0023] As one implementation method in this embodiment, please refer to Figure 2 As shown, an arc-shaped seat 101 is fixedly connected to the support base 1. Two guide rods 102 are fixedly connected to both sides of the arc-shaped seat 101 in a symmetrical structure. A positioning sleeve 103 is fixedly connected to the bottom of the support base 1, and the positioning sleeve 103 is movably inserted into the intermediate seat 3. Multiple T-shaped positioning feet 104 are fixedly connected to the bottom of the support base 1. The curvature of the arc-shaped seat 101 matches the contour of the outer wall of the tunnel boring machine cutterhead, ensuring a high degree of fit and strong support stability. The surface of the arc-shaped seat 101 is covered with a highly elastic anti-slip rubber pad with a friction coefficient ≥0.8, preventing the cutterhead from sliding. The dual positioning design of the positioning sleeve 103 and the T-shaped positioning feet 104 makes the connection between the support base 1, the intermediate seat 3, and the support frame 5 more reliable, avoiding relative displacement during operation and ensuring positioning accuracy.

[0024] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, the positioning mechanism 2 includes a positioning seat 201. Guide sleeves 202 are fixedly connected to both sides of the positioning seat 201. The inner wall of the guide sleeve 202 is slidably fitted with the outer wall of the guide rod 102. A hydraulic cylinder 203 is fixedly connected to the side of the positioning seat 201 facing the arc-shaped seat 101. The other end of the hydraulic cylinder 203 is fixedly connected to the inner wall of the arc-shaped seat 101.

[0025] The hydraulic cylinder 203 provides a stable driving force, which, together with the guiding action of the guide rod 102 and the guide sleeve 202, enables the positioning seat 201 to move precisely along the preset trajectory, ensuring that the movable positioning rod 205 can accurately fit against the outer wall of the cutter head and achieve precise positioning.

[0026] The positioning seat 201 has multiple sleeve holes 204. A movable positioning rod 205 is slidably fitted through the sleeve hole 204. A spring 206 is fixedly connected to the inner end of the movable positioning rod 205. The other end of the spring 206 is fixedly connected to the inner wall of the sleeve hole 204.

[0027] Meanwhile, by setting multiple movable positioning rods 205 connected by springs 206 on the positioning seats 201 on both sides, the contact position and pressure can be automatically adjusted according to the shape of the cutter head. This provides stable and accurate pre-positioning and reliable support during cutter head and cutter box replacement, enabling rapid alignment and installation. This significantly improves the safety, accuracy, and efficiency of the replacement operation and reduces labor intensity. The multiple movable positioning rods 205 are distributed in a matrix, forming multi-point uniform clamping, avoiding deformation caused by localized force concentration on the cutter head. At the same time, the elastic buffering effect of the springs 206 can absorb the impact load when the cutter head is placed, further improving the support stability.

[0028] As one implementation method in this embodiment, please refer to Figure 4 As shown, the adjustment mechanism 4 includes a drive wheel 401. One end of the drive wheel 401 is rotatably connected to the inner wall of the intermediate seat 3 via a pin. A driven wheel 402 is meshed and driven on one side of the drive wheel 401. A bidirectional lead screw 403 is fixedly connected to the driven wheel 402. The bidirectional lead screw 403 is rotatably connected to the inner wall of the intermediate seat 3.

[0029] By manually rotating the drive wheel 401, the driven wheel 402 drives the bidirectional lead screw 403 to rotate smoothly, which is labor-saving and enables the support frame 5 to be quickly deployed and retracted, adapting to the transportation and installation needs of the limited space in the tunnel.

[0030] Both ends of the bidirectional lead screw 403 are threadedly connected to adjusting seats 404. Adjusting rods 405 are rotatably connected to both sides of the adjusting seats 404. The other end of the adjusting rods 405 is rotatably connected to the support frame 5.

[0031] As one implementation method in this embodiment, please refer to Figures 2-5 As shown, the support frame 5 has a mounting hole 501. The inner wall of the mounting hole 501 is movably connected to the T-shaped positioning foot 104. A positioning pin 502 is threaded through the inner wall of one side of the mounting hole 501. A hydraulic support foot 503 is fixedly connected to one end of the support frame 5.

[0032] The hydraulic outrigger 503 can quickly adjust the support height to adapt the device to the uneven ground in the tunnel and ensure that the support base 1 remains horizontal. At the same time, the positioning pin 502 can firmly lock the T-shaped positioning foot 104 in the mounting hole 501 to prevent the support base 1 from falling off during operation and improve the safety of the device.

[0033] Working principle: When it is necessary to replace the cutterhead and cutter box of the tunnel boring machine, first place the device in a suitable position, and then rotate the drive wheel 401 so that the drive wheel 401 can drive the double-acting screw 403 connected to the driven wheel 402 to rotate. At this time, the double-acting screw 403 will drive the two adjusting seats 404 to move, so that the adjusting seats 404 can drive the folded support frame 5 to unfold through the adjusting rod 405 to support the device. Then, the positioning sleeve 103 at the bottom of the support seat 1 is aligned with the intermediate seat 3 and fitted onto the intermediate seat 3. At this time, the multiple T-shaped positioning feet 1 at the bottom of the support seat 1 04 can be inserted into the mounting hole 501, and then the positioning pin 502 is rotated so that the positioning pin 502 can limit the T-shaped positioning foot 104. Then, the height of the support base 1 can be adjusted by the hydraulic support foot 503 so that the arc-shaped seat 101 on the support base 1 can support the cutter head and tool holder. At the same time, the hydraulic cylinder 203 can drive the connected positioning base 201 to move. At this time, the movable positioning rod 205 on the positioning base 201 will contact various positions of the cutter head and tool holder under the action of the spring 206 to realize the positioning of the cutter head and tool holder, which facilitates its replacement and installation.

[0034] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A shield tunneling machine cutterhead and cutter box replacement and positioning device, characterized in that: Includes a support base (1), on which a positioning mechanism (2) for limiting the cutterhead and cutter box of the tunnel boring machine is slidably fitted, and an intermediate seat (3) is provided below the support base (1). An adjustment mechanism (4) is rotatably connected to the intermediate seat (3), and two support frames (5) are provided on both sides of the intermediate seat (3) in a symmetrical structure.

2. The shield machine cutterhead and cutter box replacement and positioning device according to claim 1, characterized in that: An arc-shaped seat (101) is fixedly connected to the support base (1). Two guide rods (102) are fixedly connected to both sides of the arc-shaped seat (101) in a symmetrical structure. A positioning sleeve (103) is fixedly connected to the bottom of the support base (1). The positioning sleeve (103) is movably inserted into the intermediate seat (3). Multiple T-shaped positioning feet (104) are fixedly connected to the bottom of the support base (1).

3. The shield machine cutterhead and cutter box replacement and positioning device according to claim 2, characterized in that: The positioning mechanism (2) includes a positioning seat (201), and guide sleeves (202) are fixedly connected to both sides of the positioning seat (201). The inner wall of the guide sleeve (202) is slidably engaged with the outer wall of the guide rod (102). A hydraulic cylinder (203) is fixedly connected to the side of the positioning seat (201) facing the arc-shaped seat (101), and the other end of the hydraulic cylinder (203) is fixedly connected to the inner wall of the arc-shaped seat (101).

4. The shield machine cutterhead and cutter box replacement and positioning device according to claim 3, characterized in that: The positioning seat (201) has multiple sleeve holes (204), and a movable positioning rod (205) is slidably fitted through the sleeve hole (204). A spring (206) is fixedly connected to the inner end of the movable positioning rod (205), and the other end of the spring (206) is fixedly connected to the inner wall of the sleeve hole (204).

5. A shield machine cutterhead and cutter box replacement and positioning device according to claim 1, characterized in that: The adjustment mechanism (4) includes a drive wheel (401), one end of which is rotatably connected to the inner wall of the intermediate seat (3) via a pin. A driven wheel (402) is meshed and driven on one side of the drive wheel (401). A bidirectional lead screw (403) is fixedly connected to the driven wheel (402), and the bidirectional lead screw (403) is rotatably connected to the inner wall of the intermediate seat (3).

6. A shield machine cutterhead and cutter box replacement and positioning device according to claim 5, characterized in that: The two-way lead screw (403) has an adjusting seat (404) threadedly connected to the outer wall at both ends. An adjusting rod (405) is rotatably connected to both sides of the adjusting seat (404). The other end of the adjusting rod (405) is rotatably connected to the support frame (5).

7. A shield machine cutterhead and cutter box replacement and positioning device according to claim 2, characterized in that: The support frame (5) has an installation hole (501). The inner wall of the installation hole (501) is movably connected to the T-shaped positioning foot (104). A positioning pin (502) is threaded through the inner wall of one side of the installation hole (501). A hydraulic support foot (503) is fixedly connected to one end of the support frame (5).

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