A shield machine cutter positioning tool

Abstract

The utility model relates to tool positioning tooling technical field, especially a kind of shield machine cutter positioning tooling, including cutter and rear disc, cutter is installed in rear disc end, and rear disc end is equipped with fixed ring.The utility model is positioned bolt and locating nut by setting, and it is convenient for operator to carry out pre-positioning fixed cutter, reduce operator positioning installation time, by setting multiple rubber washers and multiple fixed bolts, fixed bolt is connected by rubber washer and fixed groove thread, so that rubber washer and cutter outside wall meet, reduce the situation due to vibration and lead to positioning accuracy decline, by setting transmission assembly, servo motor drives screw rod rotation, screw rod is driven two connecting rods to move by moving block, two connecting rods are driven two T-shaped sliders to move oppositely by two T-shaped sliders, cutter is fixed by limiting bolt and limiting groove, improve the positioning fixed effect of cutter, improve the work efficiency when positioning installation.

Description

Technical Field

[0001] This utility model relates to the field of tool positioning fixture technology, and in particular to a tool positioning fixture for the cutterhead of a tunnel boring machine. Background Technology

[0002] The shield tunneling machine cutterhead positioning fixture is a specially designed and precision-manufactured auxiliary installation tool. Its core function is to quickly and accurately position and install the shield tunneling machine cutterhead.

[0003] The installation process for the cutterhead of a tunnel boring machine (TBM) is cumbersome. Operators spend a long time positioning the cutterhead, resulting in low efficiency and increased overall project time. Furthermore, after installation, the cutterhead vibrates during prolonged operation, causing a decrease in tension and positioning accuracy, which in turn affects the stability of subsequent equipment operation. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of low efficiency in positioning and installation work in the prior art, and to propose a positioning fixture for the cutterhead of a tunnel boring machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tooling for positioning cutters on a tunnel boring machine (TBM) includes a cutterhead and a rear plate. The cutterhead is mounted on the end of the rear plate, and the end of the rear plate has a fixing ring. The end of the cutterhead has a sliding groove, and multiple cutters are arranged circumferentially on the end of the cutterhead. Two symmetrically arranged positioning combination holes are opened on the cutterhead. Two symmetrically arranged positioning bolts are arranged on the end of the rear plate. A support plate is provided on the end of the support plate, and a servo motor is provided on the end of the support plate. A transmission component is provided at the output end of the servo motor. Two limiting plates for limiting the cutterhead are symmetrically arranged inside the rear plate. Two limiting holes are symmetrically opened on the cutterhead, and limiting bolts are coaxially inserted into the limiting holes. Multiple rubber gaskets are arranged circumferentially above the rear plate.

[0007] Preferably, a positioning nut is coaxially provided on the outer wall of the positioning bolt, and the positioning nut and the positioning bolt are provided in a one-to-one correspondence. The positioning combination hole is provided with a positioning hole and a positioning groove respectively, and the positioning hole and the positioning groove are coaxially provided.

[0008] Preferably, the transmission assembly includes a threaded rod and a moving block, the support plate has a groove at its end, the threaded rod is disposed on the inner side wall of the groove, and the moving block is coaxially disposed on the outer side wall of the threaded rod.

[0009] Preferably, a T-shaped groove is provided at the end of the rear disc, and two T-shaped sliders are symmetrically arranged in the T-shaped groove. A connecting rod is provided between the end of the T-shaped slider and the end of the moving block.

[0010] Preferably, the end of the T-shaped slider is connected to the end of the limiting plate, the limiting plate and the T-shaped slider are arranged in a one-to-one correspondence, the end of the limiting plate is provided with a limiting groove, and the limiting groove and the limiting hole are coaxially arranged.

[0011] Preferably, the rear disc end has multiple circumferential grooves, a slider is slidably disposed in the grooves, the end of the slider is connected to the end of the rubber pad, a fixing bolt is inserted into the end of the rubber pad, and the cutter disc sidewall has multiple circumferential fixing grooves.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. This utility model facilitates the pre-positioning and fixing of the cutter head by setting positioning bolts and positioning nuts, reducing the positioning and installation time of the operator. By setting multiple rubber pads and multiple fixing bolts, the fixing bolts are connected to the fixing grooves through the rubber pads, so that the rubber pads are in contact with the outer wall of the cutter head, reducing the possibility of a decrease in positioning accuracy due to vibration.

[0014] 2. This utility model, by setting up a transmission component, uses a servo motor to drive the threaded rod to rotate. The threaded rod drives two connecting rods to move through a moving block. The two connecting rods drive the two side limit plates to move in opposite directions through two T-shaped sliders. The cutter head is limited and fixed by limit bolts and limit grooves, which improves the positioning and fixing effect of the cutter head and improves the work efficiency during positioning and installation. Attached Figure Description

[0015] Figure 1 This is an isometric view of a shield tunneling machine cutterhead tool positioning fixture proposed in this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of a portion of region A in the middle;

[0017] Figure 3 This is a side view of the cutter head during cutting.

[0018] Figure 4 This is a top view of the cutter head during cutting;

[0019] Figure 5 This is a top view of the fixed ring cut out.

[0020] In the diagram: 1. Cutter head; 2. Rear plate; 3. Fixing ring; 4. Limiting bolt; 5. Limiting hole; 6. Cutter; 7. Positioning nut; 8. Positioning bolt; 9. Positioning combination hole; 10. Rubber gasket; 11. Slider; 12. Slide groove; 13. Fixing bolt; 14. Limiting plate; 15. Limiting groove; 16. T-shaped slider; 17. T-shaped slide groove; 18. Servo motor; 19. Support plate; 20. Threaded rod; 21. Connecting rod; 22. Moving block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-5 A tooling for positioning cutters on a tunnel boring machine cutterhead includes a cutterhead 1 and a rear plate 2. The cutterhead 1 is installed at the end of the rear plate 2, and a fixing ring 3 is fixedly installed at the end of the rear plate 2. A sliding groove is provided at the end of the cutterhead 1, and the two sides of the sliding groove are convex. The sliding groove is adapted to two limiting plates 14. This arrangement improves the fixing effect on the cutterhead 1.

[0023] Multiple cutting tools 6 are fixedly arranged in a circular pattern at the end of the cutter head 1. Two symmetrical positioning combination holes 9 are provided on the cutter head 1. The positioning combination holes 9 are respectively provided with positioning holes and positioning grooves. The positioning holes and positioning grooves are coaxially arranged. Two positioning bolts 8 are symmetrically fixedly arranged at the end of the rear plate 2, and the ends of the two positioning bolts 8 extend into the positioning combination holes 9. The positioning nuts 7 are coaxially arranged on the outer wall of the positioning bolts 8. The external thread of the shank of the positioning bolt 8 is engaged with the internal thread of the positioning nut 7. The positioning nuts 7 and positioning bolts 8 are arranged one-to-one, so that the ends of the positioning nuts 7 are connected to the ends of the positioning grooves. This facilitates the operator's initial positioning and fixing of the cutter head 1, reduces human positioning errors, and improves the operator's work efficiency during positioning and installation.

[0024] The support plate 19 is fixedly mounted at the end of the rear plate 2, and the servo motor 18 is fixedly mounted at the end of the support plate 19. A shock-absorbing pad is provided between the servo motor 18 and the support plate 19. A servo controller is provided on the servo motor 18. By adjusting the rotation direction and rotation angle of the output end of the servo motor 18 through the operation program of the servo controller, the direction of rotation can be effectively controlled to provide driving force for the threaded rod 20. This operation program is existing technology and will not be described in detail here.

[0025] The output end of the servo motor 18 is provided with a transmission component, which includes a threaded rod 20 and a moving block 22. The end of the support plate 19 is provided with a groove. The threaded rod 20 is rotatably disposed on the inner side wall of the groove. The moving block 22 is coaxially disposed on the outer side wall of the threaded rod 20. The moving block 22 is provided with a threaded hole that matches the threaded rod 20. The moving block 22 moves on the outer side wall of the threaded rod 20 through the threaded hole. This configuration provides the power transmission to the limiting plate 14.

[0026] The rear disc 2 has a T-shaped groove 17 at its end. Two T-shaped sliders 16 are symmetrically slidably arranged in the T-shaped groove 17. A connecting rod 21 is provided between the end of the T-shaped slider 16 and the end of the moving block 22. The end of the connecting rod 21 and the end of the moving block 22 are fixedly connected by a shaft. The other end of the connecting rod 21 and the end of the T-shaped slider 16 are fixedly connected by a shaft. The connecting rod 21 and the T-shaped slider 16 are arranged in a one-to-one correspondence, so that the two connecting rods 21 drive the two T-shaped sliders 16 to move in opposite directions in the T-shaped groove 17. This arrangement improves the working efficiency of secondary positioning of the cutter head 1 and reduces the operation time of positioning and fixing.

[0027] The rear disc 2 is symmetrically provided with two limiting plates 14 for limiting the cutter head 1. The ends of the T-shaped sliders 16 and the ends of the limiting plates 14 are fixedly connected. The limiting plates 14 and the T-shaped sliders 16 are set one-to-one. The two limiting plates 14 slide in opposite directions in the T-shaped groove 17 through the two T-shaped sliders 16, so that the two limiting plates 14 are in contact with the inner side wall of the groove. This arrangement enables the two limiting plates 14 to play a secondary positioning role for the cutter head 1.

[0028] Two limiting holes 5 are symmetrically opened on the cutter head 1. A limiting bolt 4 is coaxially inserted into the limiting hole 5. The external thread of the limiting bolt 4 is engaged with the internal thread of the limiting hole 5. A limiting groove 15 is opened at the end of the limiting plate 14. The external thread of the limiting bolt 4 is engaged with the internal thread of the limiting groove 15. The limiting groove 15 and the limiting hole 5 are coaxially arranged. This arrangement allows the limiting bolt 4 to be threadedly connected through the limiting hole 5 and the limiting groove 15, which improves the fixing effect of the limiting plate 14 and enhances the stability of the overall equipment during operation.

[0029] Multiple rubber pads 10 are arranged circumferentially above the rear plate 2. Multiple sliding grooves 12 are circumferentially formed at the end of the rear plate 2. A slider 11 is slidably disposed on the inner side wall of the sliding groove 12. The end of the slider 11 is fixedly connected to the end of the rubber pad 10. A fixing bolt 13 is inserted into the end of the rubber pad 10. Multiple fixing grooves are circumferentially formed on the side wall of the cutter head 1. The external thread of the fixing bolt 13 is engaged with the internal thread of the fixing groove. By connecting the end of the rubber pad 10 to the outer side wall of the cutter head 1, the positioning accuracy is reduced due to vibration. By connecting the fixing bolt 13 to the fixing groove, the loosening force is prevented from decreasing, thus improving the positioning and fixing effect around the cutter head 1.

[0030] The functional principle of this utility model can be explained through the following operation methods:

[0031] The operator aligns the two positioning combination holes 9 at the end of the cutter head 1 and the two positioning bolts 8 at the end of the rear plate 2 coaxially, and connects the positioning nut 7 and the positioning bolt 8 by thread, so that the end of the positioning groove in the positioning combination hole 9 abuts against the positioning nut 7, thereby reducing the operator's initial positioning operation time.

[0032] By driving the servo motor 18, the servo motor 18 drives the threaded rod 20 to rotate. The moving block 22 moves on the outer wall of the threaded rod 20 through the threaded hole, causing the moving block 22 to drive the two connecting rods 21 to move. The two connecting rods 21 drive the two T-shaped sliders 16 to slide in opposite directions in the T-shaped slide groove 17. The two T-shaped sliders 16 drive the two limiting plates 14 to abut against the inner wall of the slide groove of the cutter head 1. The limiting bolt 4 is threadedly connected to the limiting hole 5 and the limiting groove 15, so as to reposition and adjust the cutter head 1 and improve the fixing effect of the positioning and installation of the cutter head 1.

[0033] The fixing bolt 13 drives the slider 11 to slide in the groove 12 through the rubber gasket 10. The end of the fixing bolt 13 abuts against the side wall of the fixing groove, and the fixing bolt 13 is threadedly connected to the fixing groove. The end of the rubber gasket 10 is connected to the outer wall of the cutter head 1, which reduces the decrease in positioning accuracy caused by running vibration.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tooling for positioning cutters on a tunnel boring machine cutterhead, comprising a cutterhead and a rear plate, wherein the cutterhead is mounted on the end of the rear plate, characterized in that, The rear plate has a fixing ring at its end, the cutter head has a sliding groove at its end, and multiple cutters are arranged circumferentially at the end of the cutter head. Two symmetrical positioning combination holes are opened on the cutter head. Two positioning bolts are symmetrically arranged at the end of the rear plate. A support plate is provided at the end of the rear plate, and a servo motor is provided at the end of the support plate. A transmission component is provided at the output end of the servo motor. Two limiting plates are symmetrically arranged inside the rear plate to limit the movement of the cutter head. Two limiting holes are symmetrically opened on the cutter head, and limiting bolts are coaxially inserted into the limiting holes. Multiple rubber gaskets are arranged circumferentially above the rear plate.

2. The shield machine cutterhead positioning fixture according to claim 1, characterized in that, The outer wall of the positioning bolt is coaxially provided with a positioning nut, and the positioning nut and the positioning bolt are set one to one. The positioning combination hole is provided with a positioning hole and a positioning groove respectively, and the positioning hole and the positioning groove are coaxially set.

3. The shield machine cutterhead positioning fixture according to claim 2, characterized in that, The transmission assembly includes a threaded rod and a moving block. A groove is provided at the end of the support plate, the threaded rod is disposed on the inner side wall of the groove, and the moving block is coaxially disposed on the outer side wall of the threaded rod.

4. The shield machine cutterhead positioning fixture according to claim 3, characterized in that, The rear plate has a T-shaped groove at the end, and two T-shaped sliders are symmetrically arranged in the T-shaped groove. A connecting rod is provided between the end of the T-shaped slider and the end of the moving block.

5. The shield machine cutterhead positioning fixture according to claim 4, characterized in that, The end of the T-shaped slider is connected to the end of the limiting plate. The limiting plate and the T-shaped slider are set in a one-to-one correspondence. The end of the limiting plate is provided with a limiting groove, and the limiting groove and the limiting hole are set coaxially.

6. The shield machine cutterhead positioning fixture according to claim 5, characterized in that, The rear disc end has multiple circumferential grooves, and a slider slides in the grooves. The end of the slider is connected to the end of the rubber pad, and a fixing bolt is inserted into the end of the rubber pad. The side wall of the cutter disc has multiple circumferential fixing grooves.

Images