A hydraulic assembly platform for a main drive pinion gear of a shield tunneling machine and a method of use

Abstract

The application discloses a shield machine main drive pinion hydraulic assembly platform and a use method thereof. The assembly platform comprises a pinion loading platform, a gripping sleeve and a pinion adjusting device. The application is of an integrated structure, high integrity, firm structure, strong compression resistance, tensile resistance and deformation resistance. The gripping sleeve can simply and efficiently fix the pinion. When in use, the pinion is only needed to be installed on the platform, and the pinion loading platform is used for accommodating and horizontally installing the pinion, so that the main drive maintenance work is facilitated, the number of personnel required during assembly is reduced, the difficulty of adjusting the posture of the pinion during horizontal installation is reduced, the labor time is reduced, the labor intensity is reduced, the maintenance efficiency is improved, the rework period is ensured, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to a hydraulic assembly platform for the main drive pinion of a tunnel boring machine and its usage method, belonging to the field of tunnel boring machine main drive pinion maintenance technology. Background Technology

[0002] Currently, tunnel boring machines (TBMs) are widely used in various underground tunnel construction projects. The installation quality and accuracy of the main drive pinion, as well as its subsequent maintenance, directly affect the equipment's operating efficiency and service life. When the main drive pinion of a TBM is damaged underground, the main problems in its disassembly, assembly, and maintenance are as follows: 1) When the TBM is underground, the main drive pinion changes from being installed axially perpendicular to the ground to being axially parallel to the ground. Since one end of the pinion is a self-aligning roller bearing, bumps or vibrations during installation can cause axial displacement of the bearing's outer ring, greatly increasing the difficulty of positioning during installation; 2) Traditional disassembly and installation require manual operation using hoists and other lifting tools to adjust the axial and radial orientation of the main drive pinion, and the installation of the workpiece using methods such as hammering. This easily causes scratches and damage to the workpiece, is labor-intensive, and has low installation efficiency; 3) Because the main drive pinion cannot be effectively fixed axially during hoisting, and the installation space is extremely confined, imbalance of the center of gravity can easily occur during disassembly or installation, causing the workpiece to fall and damage other workpieces, posing a safety risk. Therefore, it is particularly important to develop a tooling that can improve the installation accuracy and efficiency of the main drive pinion in downhole horizontal assembly while ensuring assembly safety. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the existing technology by providing a hydraulic assembly platform for the main drive pinion of a tunnel boring machine and a method for using it, thereby improving the efficiency of disassembly, assembly and maintenance, and ensuring the safety of personnel and equipment.

[0004] To solve this technical problem, the present invention provides a hydraulic assembly platform for the main drive pinion of a tunnel boring machine, including a pinion loading platform, a gripping sleeve, and a pinion adjusting device. One end of the pinion is provided with a pinion fixing shaft, and the other end with a pinion spline shaft. A pinion bearing is provided on the pinion fixing shaft, and a pinion adjusting device is provided between the pinion bearing and the pinion. The gripping sleeve includes a pinion fastening flange, a clamping plate fastening flange, a clamping plate connecting pipe, and a clamping plate. The pinion fastening flange is welded to one end face of the clamping plate connecting pipe, and one end face of the clamping plate fastening flange is welded to the end face of the clamping plate connecting pipe opposite to the pinion fastening flange. The clamping plate fastening flange is engaged with the clamping plate using clamping plate screws. The cylinder connecting flange is engaged with the pinion fastening flange using connecting flange screws. The pinion loading platform includes an end plate, a cylinder seat arc plate, a cylinder, a cylinder seat connecting flange, a pinion seat connecting flange, a pinion seat arc plate, a connecting sleeve, and a cylinder connecting flange. The pinion seat connecting flange is connected via cylinder seat connecting screws. The pinion is mounted on the pinion seat arc plate. The pinion spline shaft passes axially through the pinion fastening flange, clamp fastening flange, and clamp connecting pipe, and the clamp fastening flange meshes with the pinion spline shaft. The pinion connecting screws are screwed into the pinion lifting hole along the center through hole of the pinion fastening flange and tightened. The clamp is radially inserted into the pinion relief groove along the pinion spline shaft, aligning the threaded hole of the clamp with the through hole of the clamp fastening flange. The clamp screws are screwed into the threaded hole of the clamp fastening flange along the through hole of the clamp fastening flange and tightened. The hydraulic cylinder is operated to bring the hydraulic cylinder connecting flange closer to the pinion fastening flange, and the hydraulic cylinder connecting flange is connected to the pinion fastening flange via connecting flange screws. The hydraulic cylinder slowly moves the pinion forward. When it approaches the large gear ring, the movement stops, and a tool is used to clamp the connecting sleeve to adjust the circumferential angle of the pinion. When it is in the meshing position with the inner teeth of the large gear ring, it continues to move forward and the pinion bearing enters the drive box pinion seat until it is installed in place.

[0005] The inner diameter of the pinion fastening flange, the clamping plate fastening flange, and the clamping plate connecting pipe is determined by adjusting the diameter of different pinion spline shafts, and the number of teeth and module of the internal gear ring of the clamping plate fastening flange are matched with those of the pinion spline shaft.

[0006] The pinion adjustment device includes a pad and a fixing magnet. The pad is placed between the pinion bearing and the pinion, and the fixing magnet is used to attract the pad onto the pinion.

[0007] The pinion loading platform adopts an arc plate structure, which can effectively accommodate the pinion and prevent the pinion from sliding radially; the base of the pinion loading platform is a segmented and integrated structure.

[0008] The cylinder is a single-stage hydraulic cylinder, controlled by the shield machine's own hydraulic system; the cylinder body diameter is slightly smaller than the diameter of the upper and lower fixed arc plates, and the cylinder body length is slightly smaller than the cylinder seat arc plate; during the propulsion process, a support is added at the drive box spacer connecting flange position to adjust the position of the pinion bearing and the drive box pinion seat.

[0009] The pinion loading platform also includes an upper arc plate for fixing the hydraulic cylinder, a connecting plate, lifting lugs, an angle steel for fixing the hydraulic cylinder, and a lower arc plate for fixing the hydraulic cylinder. The hydraulic cylinder seat arc plate and the pinion seat arc plate are made by rolling steel plates into a single circle and then cutting them into rectangular arc plates. The axial length of the pinion seat arc plate is determined according to the length of the pinion. The end plate is composed of two semi-circular steel plates of different diameters spliced ​​together. The smaller circle diameter is the same as the diameter of the hydraulic cylinder, and the larger circle diameter is the same as the outer diameter of the hydraulic cylinder seat arc plate. The larger semi-circle of the end plate is welded to one end face of the hydraulic cylinder seat arc plate. The hydraulic cylinder seat connecting flange is welded to the opposite end face of the hydraulic cylinder seat arc plate and the end plate. The pinion seat connecting flange is welded to one end face of the pinion seat arc plate. The drive box connecting flange is welded to the opposite end face of the pinion seat arc plate and the pinion seat connecting flange. Two lower arc plates for fixing the hydraulic cylinder are also included. Arranged on the side of the semi-cylindrical part inside the cylinder seat arc plate, one piece is near the end plate and the other piece is near the cylinder seat connecting flange; the cylinder is placed on the inner circular surface of the two cylinder fixing lower arc plates, with the rodless end face in contact with the end plate plane, and the cylinder fixing upper arc plate is placed at the corresponding position on the cylinder fixing lower arc plate, and the cylinder is fastened by cylinder fixing screws and cylinder fixing nuts; the cylinder piston rod is fitted into the larger circular hole of the connecting sleeve and welded and fixed, and the cylinder connecting flange is welded to the other end face of the connecting sleeve opposite to the cylinder piston rod; there are a total of eight lifting lugs, four of which are evenly welded to the four corners of the side cross-section of the semi-cylindrical part of the cylinder seat arc plate and the pinion seat arc plate; the cylinder seat connecting flange and the pinion seat connecting flange are connected by cylinder seat connecting screws, and the drive box connecting flange and the drive box are connected by drive box connecting screws.

[0010] The cylinder seat connecting flange and the pinion seat connecting flange are both circular sector-shaped steel plates divided into a single ring. Their inner diameters are the same as the inner diameters of the cylinder seat arc plate and the pinion seat arc plate, respectively. The cylinder seat connecting flange has eight through holes machined near its outer circumference, while the pinion seat connecting flange has eight threaded through holes machined at the pitch circle diameter and angle corresponding to the through holes of the cylinder seat connecting flange. The drive box connecting flange is also a circular sector-shaped steel plate divided into a single ring. Its inner diameter is the same as the inner diameter of the pinion seat arc plate, and it has threaded through holes machined at the pitch circle diameter and angle corresponding to the threaded holes in the lower half of the drive box spacer connecting flange. There are eight through holes; the connecting sleeve is a cylindrical steel bar with a stepped through hole at its axial center, wherein the diameter of the small circle is the same as the inner diameter of the cylinder connecting flange, and the diameter of the large circle is slightly larger than the diameter of the cylinder piston rod, and its outer circle is knurled; the cylinder connecting flange is a circular steel plate with sixteen through holes machined near its outer circle; the pinion fastening flange is a circular steel plate with sixteen threaded through holes machined near its outer circle, the pitch circle diameter of the threaded through holes is the same as that of the cylinder connecting flange and is evenly distributed, its outer circle diameter is the same as that of the cylinder connecting flange, and a through hole is machined in the center of the steel plate.

[0011] The clamping flange is a circular annular steel plate with sixteen through holes machined near its outer circumference. A gear ring is machined into its inner hole to mesh with the splined shaft of the pinion. The clamping connecting pipe is a circular hollow steel pipe with an inner diameter slightly larger than the maximum diameter of the pinion splined shaft, and its length plus the thickness of the clamping flange equals the length of the pinion splined shaft. The clamping plate is a circular sector-shaped steel plate divided into two parts. Before division, sixteen threaded through holes are machined near its outer circumference. Its outer diameter is the same as the clamping flange, and its inner diameter is slightly smaller than the diameter of the pinion relief groove. The pad is a circular sector-shaped steel plate divided into two parts. Its inner diameter is slightly smaller than the diameter of the pinion fixing shaft, its outer diameter is slightly larger than the maximum diameter of the pinion, and its thickness is slightly smaller than the distance between the pinion and the pinion bearing. The fixing magnet is a rectangular permanent magnet.

[0012] The present invention also provides a method for using the above-described shield machine main drive pinion hydraulic assembly platform, comprising the following steps:

[0013] 1) First, hoist the pinion so that the pinion fixed shaft faces upward. Heat-install the pinion bearing until the pinion fixed shaft is in place. Insert two pads into the gap between the pinion bearing and the pinion to fix the pinion bearing and prevent axial displacement. Use two fixing magnets to attract the two pads to the pinion.

[0014] 2) Flip the hoisting pinion so that the pinion spline shaft faces upward. Insert the pinion fastening flange, clamp fastening flange, and clamp connecting pipe along the pinion spline shaft to the bottom. The clamp fastening flange engages with the pinion spline shaft. Use the pinion connecting screw to screw into the pinion hoisting hole along the center through hole of the pinion fastening flange and tighten it.

[0015] 3) Insert the two clamping plates radially into the pinion relief groove along the spline shaft of the pinion, so that the threaded holes of the clamping plates are aligned with the through holes of the clamping plate fastening flange. Take the clamping plate screws and screw them into the threaded holes of the clamping plates along the through holes of the clamping plate fastening flange and tighten them.

[0016] 4) Lift the lifting lug, pinion seat connecting flange, pinion seat arc plate and drive box connecting flange welded parts horizontally to the drive box spacer connecting flange, align the eight through holes of the drive box connecting flange with the threaded holes of the lower half of the drive box spacer connecting flange, and then screw the drive box connecting screws into the threaded holes of the lower half of the drive box spacer connecting flange through the through holes and tighten them.

[0017] 5) Hoist the end plate, cylinder seat arc plate, cylinder, upper cylinder fixing arc plate, connecting plate, lifting lug, cylinder fixing screw, cylinder fixing nut, cylinder fixing angle steel, lower cylinder fixing arc plate, cylinder seat connecting flange, connecting sleeve and cylinder connecting flange assembly to the pinion seat connecting flange, align the eight through holes of the cylinder seat connecting flange with the threaded holes of the pinion seat connecting flange, and then screw the cylinder seat connecting screws into the threaded holes of the pinion seat connecting flange along the through holes of the cylinder seat connecting flange and tighten them.

[0018] 6) Hoist the pinion onto the pinion seat arc plate, with the splined shaft side of the pinion facing the oil cylinder. Operate the oil cylinder to bring the oil cylinder connecting flange close to the pinion fastening flange. Rotate the pinion to align the through hole of the oil cylinder connecting flange with the threaded hole of the pinion fastening flange. Then, use the connecting flange bolts to screw into the threaded hole of the pinion fastening flange along the through hole of the oil cylinder connecting flange and tighten them.

[0019] 7) Operate the hydraulic cylinder to slowly move the pinion forward. When it approaches the large gear ring, stop moving and use a tool to clamp the connecting sleeve. Adjust the circumferential angle of the pinion. When it is in the meshing position with the inner teeth of the large gear ring, continue to move forward and let the pinion bearing enter the pinion seat of the drive box. Stop pushing after entering 10mm. Take out the fixing magnet and pad through the observation port of the drive box and continue to push until it is installed in place.

[0020] 8) After the pinion is installed, remove the clamping plate screws, connecting flange screws, pinion connecting screws, cylinder seat connecting screws and drive box connecting screws in sequence. Remove the gripping sleeve and pinion loading platform components, and repeat steps 1)-7) to install the remaining pinion.

[0021] The inner diameter of the pinion fastening flange, the clamping plate fastening flange, and the clamping plate connecting pipe welded parts described in step 2) is adjusted according to the diameter of different pinion spline shafts, and the internal gear ring of the clamping plate fastening flange is adjusted according to the number of teeth and module of the pinion spline shaft.

[0022] The hydraulic cylinder described in step 7) is controlled by the shield machine's own hydraulic system; during the propulsion process, a support is added at the drive box spacer connecting flange position to adjust the position of the pinion bearing and the drive box pinion seat, making the adjustment more precise.

[0023] Beneficial effects: This invention features a one-piece structure with high integrity and robustness, exhibiting strong resistance to compression, tension, and deformation. The gripping sleeve provides simple and efficient fixation of the pinion, while the pinion loading platform facilitates its storage and lateral installation, simplifying main drive maintenance. Using this invention, the pinion is simply mounted on the platform, enabling rapid lateral assembly within the cavity. This reduces the number of personnel required for assembly, simplifies pinion posture adjustment during lateral installation, reduces labor time and intensity, improves maintenance efficiency, ensures timely resumption of work, and lowers costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic diagram of direction AA;

[0026] Figure 3 For the present invention Figure 1 BB-direction diagram;

[0027] Figure 4 For the present invention Figure 1 CC-direction schematic diagram;

[0028] Figure 5 For the present invention Figure 1 DD-direction schematic diagram;

[0029] Figure 6 For the present invention Figure 1 EE direction diagram;

[0030] Figure 7 For the present invention Figure 1 FF-direction schematic diagram;

[0031] Figure 8 For the present invention Figure 1 A schematic diagram of the G direction;

[0032] Figure 9 This is a schematic diagram of the structure of the connecting flange bolt of the present invention;

[0033] Figure 10 This is a cross-sectional schematic diagram of the pinion of the present invention.

[0034] In the diagram: 1. End plate; 2. Cylinder seat arc plate; 3. Cylinder; 4. Upper arc plate for cylinder fixing; 5. Connecting plate; 6. Lifting lug; 7. Cylinder fixing screw; 8. Cylinder fixing nut; 9. Cylinder fixing angle steel; 10. Lower arc plate for cylinder fixing; 11. Cylinder seat connecting screw; 12. Cylinder seat connecting flange; 13. Pinion seat connecting flange; 14. Pinion seat arc plate; 15. Drive box connecting screw; 16. Drive box connecting flange; 17. Connecting sleeve; 18. Connecting flange screw; 19. Cylinder connecting flange; 20. Pinion connecting screw ; 21. Pinion fastening flange; 22. Clamping plate screw; 23. Clamping plate fastening flange; 24. Clamping plate connecting pipe; 25. Clamping plate; 26. Fixing magnet; 27. Pad plate; 28. Pinion loading platform; 29. ​​Grip sleeve; 30. Pinion adjusting device; 31. Drive box; 32. Pinion; 33. Pinion bearing; 34. Pinion spline shaft; 35. Pinion fixed shaft; 36. Pinion relief groove; 37. Pinion lifting hole; 38. Drive box observation port; 39. Drive box spacer connecting flange; 40. Drive box pinion seat. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] like Figures 1-10As shown, this invention provides a hydraulic assembly platform for the main drive pinion of a tunnel boring machine, including a pinion loading platform 28, a gripping sleeve 29, and a pinion adjusting device 30. One end of the pinion 32 is provided with a pinion fixing shaft 35, and the other end with a pinion spline shaft 34. A pinion bearing 33 is provided on the pinion fixing shaft 35, and a pinion adjusting device 30 is provided between the pinion bearing 33 and the pinion 32. The gripping sleeve 29 includes a pinion fastening flange 21, a clamping plate fastening flange 23, a clamping plate connecting pipe 24, and a clamping plate 25. The pinion fastening flange 21 is welded to one end face of the clamping plate connecting pipe 24, and its axial centerline coincides with the axial centerline of the clamping plate connecting pipe 24. The clamping plate 25 is located near the outer... The axial center lines of each threaded hole at the outer circle coincide with the axial center lines of each through hole near the outer circle of the clamping plate fastening flange 23; one end face of the clamping plate fastening flange 23 is welded to the end face opposite to the clamping plate connecting pipe 24 and the pinion fastening flange 21, and its axial center line coincides with the axial center line of the clamping plate connecting pipe 24. The clamping plate fastening flange 23 and the clamping plate 25 are engaged by the clamping plate screws 22; the connecting flange screws 18 are inserted into each through hole near the outer circle of the cylinder connecting flange 19, aligning the threaded holes of the pinion fastening flange 21 with the through holes of the cylinder connecting flange 19, and screwing the connecting flange screws 18 inserted into the cylinder connecting flange 19 into the threaded holes of the pinion fastening flange 21 to engage the two; the pinion fastening flange 23 is engaged by the connecting flange screws 18 inserted into the cylinder connecting flange 19. The gear loading platform 28 includes an end plate 1, a cylinder seat arc plate 2, a cylinder 3, a cylinder seat connecting flange 12, a pinion seat connecting flange 13, a pinion seat arc plate 14, a connecting sleeve 17, and a cylinder connecting flange 19. The cylinder seat connecting flange 12 and the pinion seat connecting flange 13 are connected by cylinder seat connecting screws 11. The pinion 32 is mounted on the pinion seat arc plate 14. The pinion spline shaft 34 passes axially through the pinion fastening flange 21, the clamp fastening flange 23, and the clamp connecting pipe 24. The clamp fastening flange 23 meshes with the pinion spline shaft 34. The pinion connecting screw 20 is screwed into the pinion lifting hole 37 along the central through hole of the pinion fastening flange 21 and tightened. The clamp 25 is connected along the pinion spline shaft 34. The key shaft 34 is radially inserted into the pinion relief groove 36, aligning the threaded hole of the clamping plate 25 with the through hole of the clamping plate fastening flange 23. The clamping plate screw 22 is screwed into the threaded hole of the clamping plate 25 along the through hole of the clamping plate fastening flange 23 and tightened. The hydraulic cylinder 3 is operated to bring the hydraulic cylinder connecting flange 19 close to the pinion fastening flange 21, and the hydraulic cylinder connecting flange 19 is connected to the pinion fastening flange 21 by the connecting flange screw 18. The hydraulic cylinder 3 slowly moves the pinion 32 forward. When it approaches the large gear ring, it stops moving and uses a pipe wrench to clamp the connecting sleeve 17 to adjust the circumferential angle of the pinion 32. When it is in the meshing position with the inner teeth of the large gear ring, it continues to move forward and the pinion bearing 33 enters the drive box pinion seat 40 until it is installed in place.

[0037] The inner diameter of the pinion fastening flange 21, the clamp fastening flange 23, and the clamp connecting pipe 24 is determined by adjusting the diameter of the different pinion spline shafts 34, and the internal gear ring of the clamp fastening flange 23 matches the number of teeth and module of the pinion spline shaft 34.

[0038] The pinion adjustment device 30 includes a pad 27 and a fixing magnet 26. The pad 27 is disposed in the gap between the pinion bearing 33 and the pinion 32, and the fixing magnet 26 is used to attract the pad 27 onto the pinion 32.

[0039] The pinion loading platform 28 adopts an arc plate structure, which can effectively accommodate the pinion 32 and prevent the pinion 32 from sliding radially, thereby further avoiding safety hazards such as workpiece damage caused by workpiece instability and object impact. The base of the pinion loading platform 28 is a segmented and integrated structure with high integrity and a solid structure. It has strong resistance to compression, tension and deformation, which can effectively fix the pinion 32. Moreover, the segmented structure of the base can be conveniently and quickly arranged in the limited space underground.

[0040] The cylinder 3 is a single-stage hydraulic cylinder, controlled by the shield machine's own hydraulic system; the cylinder body diameter of the cylinder 3 is slightly smaller than the diameter of the upper arc plate 4 and the lower arc plate 10 fixed by the cylinder, and the cylinder body length is slightly smaller than the cylinder seat arc plate 2; during the propulsion process, a support is added at the drive box spacer connecting flange 39 to adjust the position of the pinion bearing 33 and the drive box pinion seat 40, making the position adjustment more precise.

[0041] The pinion loading platform 28 also includes an upper cylinder fixing arc plate 4, a connecting plate 5, a lifting lug 6, a cylinder fixing angle steel 9, and a lower cylinder fixing arc plate 10; the cylinder seat arc plate 2 and the pinion seat arc plate 14 are made of steel plates rolled into a whole circle and then cut into rectangular arc plates, and the axial length of the pinion seat arc plate 14 is determined according to the length of the pinion 32; the end plate 1 is spliced ​​from two semi-circular steel plates with different diameters, the smaller circle diameter is the same as the diameter of the cylinder 3, and the larger circle diameter is the same as the outer diameter of the cylinder seat arc plate 2; the larger semicircle of the end plate 1 is welded to one end face of the cylinder seat arc plate 2, and its semi-cylindrical side is aligned with the semi-cylindrical side of the cylinder seat arc plate 2; the cylinder seat connecting flange 12 is welded to the other end face of the cylinder seat arc plate 2 opposite to the end plate 1, and its inner semi-cylindrical side is aligned with the... The inner semi-cylindrical sides of the cylinder seat arc plate 2 are aligned. The pinion seat connecting flange 13 is welded to one end face of the pinion seat arc plate 14, with its inner semi-cylindrical side aligned with the inner semi-cylindrical side of the pinion seat arc plate 14. The drive box connecting flange 16 is welded to the other end face opposite to the pinion seat arc plate 14 and the pinion seat connecting flange 13, with its inner semi-cylindrical side aligned with the inner semi-cylindrical side of the pinion seat arc plate 14. Two cylinder fixing lower arc plates 10 are arranged on the inner semi-cylindrical side of the cylinder seat arc plate 2, one near the end plate 1 and the other near the cylinder seat connecting flange 12. The axes of the cylinder seat arc plate 2 and the cylinder fixing lower arc plate 10 coincide and the side profiles of the semi-cylinders are parallel. There are six cylinder fixing angle steels 9 in total. Three pieces are welded perpendicular to the outer circular surface between the cylinder base arc plates 2, one of which is perpendicular to the ground, and the other two are arranged at 45° to the first piece on both sides; the hydraulic cylinder 3 is placed on the inner circular surface of the two hydraulic cylinder fixing lower arc plates 10, with its axis coinciding with the hydraulic cylinder fixing lower arc plate 10, and its rodless end face fitting against the plane of the end plate 1; the hydraulic cylinder fixing upper arc plate 4 is placed at the corresponding position of the hydraulic cylinder fixing lower arc plate 10, and the through holes on the two connecting plates 5 are aligned, and the hydraulic cylinder 3 is fastened by hydraulic cylinder fixing screws 7 and hydraulic cylinder fixing nuts 8; there are two of each of the hydraulic cylinder fixing upper arc plate 4 and hydraulic cylinder fixing lower arc plate 10, which are made by rolling a whole circle of steel plate and cutting it into rectangular arc plates, and a certain fastening gap should be cut between the two plates during the cutting process; the connecting plate 5 is a rectangular steel plate, and a... Two φ14 through holes are drilled. The long side of the steel plate has the same axial length as the upper arc plate 4 and the lower arc plate 10 of the cylinder fixing. The steel plate is welded to the upper arc plate 4 and the lower arc plate 10 of the cylinder fixing. The larger circular hole of the connecting sleeve 17 is fitted into the piston rod of the cylinder 3 and welded to it. The cylinder connecting flange 19 is welded to the other end face of the connecting sleeve 17 opposite to the piston rod of the cylinder 3, and its axis coincides with the connecting sleeve 17. There are eight lifting lugs 6 in total. They are made of steel plate and their thickness is the same as that of the cylinder seat arc plate 2 and the pinion seat arc plate 14. Four lifting lugs 6 are evenly welded to the four corners of the side cross section of the semi-cylinder of the cylinder seat arc plate 2 and the pinion seat arc plate 14, and the axial center line of the circular hole on the upper part is perpendicular to the axial center line of the cylinder seat arc plate 2 and the pinion seat arc plate 14.The length of the cylinder fixing angle steel is slightly less than the radial distance between the cylinder fixing lower arc plate 10 and the cylinder seat arc plate 2; the cylinder seat connecting flange 12 and the pinion seat connecting flange 13 are connected by the cylinder seat connecting screw 11, and the drive box connecting flange 16 and the drive box 31 are connected by the drive box connecting screw 15.

[0042] The cylinder seat connecting flange 12 and the pinion seat connecting flange 13 are circular sector-shaped steel plates divided into a full circle. Their inner diameters are the same as the inner diameters of the cylinder seat arc plate 2 and the pinion seat arc plate 14. The cylinder seat connecting flange 12 has eight φ14 through holes machined near its outer circle, and the through holes are evenly distributed. The pinion seat connecting flange 13 has eight M12 threaded through holes machined at the pitch circle diameter and angle corresponding to the through holes of the cylinder seat connecting flange 12. The drive box connecting flange 16 is a circular sector-shaped steel plate divided into a full circle. Its inner diameter is the same as the inner diameter of the pinion seat arc plate 14. It has a pitch circle diameter and angle corresponding to the threaded holes in the lower half of the drive box spacer connecting flange 39. There are eight φ14 through holes; the connecting sleeve 17 is a cylindrical steel bar with a stepped through hole at its axial center, wherein the small circle diameter is the same as the inner diameter of the cylinder connecting flange 19, and the large circle diameter is slightly larger than the piston rod diameter of the cylinder 3, and its outer circle is knurled; the cylinder connecting flange 19 is a circular steel plate with sixteen φ14 through holes machined near its outer circle, and the through holes are evenly distributed; the pinion fastening flange 21 is a circular steel plate with sixteen M12 threaded through holes machined near its outer circle, the pitch circle diameter of the threaded through holes is the same as that of the cylinder connecting flange 19 and is evenly distributed, its outer circle diameter is the same as that of the cylinder connecting flange 19, and a φ18 through hole is machined in the center of the steel plate.

[0043] The clamping flange 23 is a circular annular steel plate with sixteen φ14 through holes machined near its outer circumference. These through holes are evenly distributed, and a gear ring is machined into its inner hole to mesh with the pinion spline shaft 34. The clamping connecting pipe 24 is a circular hollow steel pipe with an inner diameter slightly larger than the maximum diameter of the pinion spline shaft 34, and its length plus the thickness of the clamping flange 23 equals the length of the pinion spline shaft 34. The clamping plate 25 is a circular sector-shaped steel plate divided into two parts before being split. It has sixteen M12 threaded through holes machined near its outer circle. The through holes are evenly distributed. Its outer circle diameter is the same as that of the clamp fastening flange 23, and its inner circle diameter is slightly smaller than that of the pinion relief groove 36. The pad 27 is a circular fan-shaped steel plate divided into two parts. Its inner diameter is slightly smaller than that of the pinion fixing shaft 35, its outer diameter is slightly larger than that of the pinion 32, and its thickness is slightly smaller than that of the distance between the pinion 32 and the pinion bearing 33. The fixing magnet 26 is a rectangular permanent magnet.

[0044] The cylinder fixing screw 7, cylinder seat connecting screw 11, drive box connecting screw 15, connecting flange screw 18, pinion connecting screw 20 and clamping plate screw 22 described in this invention are all standard screws of national standard GB / T70.1-2008; the cylinder fixing nut 8 is a standard nut of national standard GB / T6170-2000.

[0045] The present invention also provides a method for using the above-described shield machine main drive pinion hydraulic assembly platform, comprising the following steps:

[0046] 1) First, hoist the pinion 32 so that the pinion fixed shaft 35 faces upward. Heat-install the pinion bearing 33 until the pinion fixed shaft 35 is in place. Insert the two pads 27 into the gap between the pinion bearing 33 and the pinion 32 to fix the pinion bearing 33 and prevent axial displacement. Use the two fixing magnets 26 to attract the two pads 27 onto the pinion 32.

[0047] 2) Flip the hoisting pinion 32 so that the pinion spline shaft 34 faces upward. Insert the welded parts of the pinion fastening flange 21, clamp fastening flange 23 and clamp connecting pipe 24 into the pinion spline shaft 34 along the axial direction to the bottom. The clamp fastening flange 23 engages with the pinion spline shaft 34. Use the pinion connecting screw 20 to screw into the pinion hoisting hole 37 through the φ18 through hole in the center of the pinion fastening flange 21 and tighten it.

[0048] 3) Insert the two clamping plates 25 radially into the pinion relief groove 36 along the spline shaft 34 of the pinion, so that the threaded hole of the clamping plate 25 is aligned with the through hole of the clamping plate fastening flange 23. Take the clamping plate screw 22 and screw it into the threaded hole of the clamping plate 25 along the through hole of the clamping plate fastening flange 23 and tighten it.

[0049] 4) Lift the welded parts of the lifting lug 6, pinion seat connecting flange 13, pinion seat arc plate 14 and drive box connecting flange 16 laterally to the drive box spacer connecting flange 39, align the eight through holes of the drive box connecting flange 16 with the threaded holes of the lower half of the drive box spacer connecting flange 39, and then screw the drive box connecting screws 15 into the threaded holes of the lower half of the drive box spacer connecting flange 39 through the through holes of the drive box connecting flange 16 and tighten them.

[0050] 5) Hoist the assembly of end plate 1, cylinder seat arc plate 2, cylinder 3, cylinder fixing upper arc plate 4, connecting plate 5, lifting lug 6, cylinder fixing screw 7, cylinder fixing nut 8, cylinder fixing angle steel 9, cylinder fixing lower arc plate 10, cylinder seat connecting flange 12, connecting sleeve 17 and cylinder connecting flange 19 to pinion seat connecting flange 13, align the eight through holes of cylinder seat connecting flange 12 with the threaded holes of pinion seat connecting flange 13, and then screw cylinder seat connecting screw 11 into the threaded holes of pinion seat connecting flange 13 through the through holes of cylinder seat connecting flange 12 and tighten it.

[0051] 6) Hoist the pinion 32 onto the pinion seat arc plate 14, with the side of the pinion spline shaft 34 facing the cylinder 3. Operate the cylinder 3 to bring the cylinder connecting flange 19 close to the pinion fastening flange 21. Rotate the pinion 32 to align the through hole of the cylinder connecting flange 19 with the threaded hole of the pinion fastening flange 21. Then, use the connecting flange bolts 18 to screw into the threaded hole of the pinion fastening flange 21 along the through hole of the cylinder connecting flange 19 and tighten them.

[0052] 7) Operate the hydraulic cylinder 3 to slowly move the pinion 32 forward. When it approaches the large gear ring, stop moving and use tools such as pipe wrenches to clamp the connecting sleeve 17. Adjust the circumferential angle of the pinion 32. When it is in the meshing position with the inner teeth of the large gear ring, continue to move forward and let the pinion bearing 33 enter the pinion seat 40 of the drive box. Stop pushing after entering 10mm. Take out the fixing magnet 26 and the pad 27 through the observation port 38 of the drive box, and continue to push until it is installed in place.

[0053] 8) After the pinion 32 is installed, remove the clamping plate screw 22, connecting flange screw 18, pinion connecting screw 20, cylinder seat connecting screw 11 and drive box connecting screw 15 in sequence. Remove the gripping sleeve 29 and the pinion loading platform 28 and repeat steps 1)-7) to install the remaining pinion 32.

[0054] The inner diameter of the welded parts of the pinion fastening flange 21, clamp fastening flange 23 and clamp connecting pipe 24 mentioned in step 2) is adjusted according to the diameter of different pinion spline shafts 34, and the internal gear ring of the clamp fastening flange 23 is adjusted according to the design data such as the number of teeth and module of the pinion spline shaft 34.

[0055] In step 7), the hydraulic cylinder 3 is controlled by the shield machine's own hydraulic system. During the propulsion process, a support is added at the drive box spacer connecting flange 39 to adjust the position of the pinion bearing 33 and the drive box pinion seat 40, making the adjustment more precise.

[0056] This invention effectively fixes the pinion and uses a hydraulic cylinder to propel it, enabling efficient and rapid lateral positioning and installation of the pinion downhole. The pinion loading platform base is a segmented, integrated structure with high integrity and robust construction, exhibiting strong resistance to compression, tension, and deformation, effectively securing the pinion. The segmented structure allows for convenient and quick arrangement within limited downhole space. Compared to traditional assembly methods using simple tooling and manual hammering, this invention uses a gripping sleeve to completely fix the pinion spline shaft and a pinion adjustment device to fix the pinion bearing, preventing axial and radial offset. This makes the assembly... The timing accuracy is greatly improved. At the same time, the use of hydraulic cylinders for pressure assembly of the pinion makes it easier for the pinion, which was originally difficult to position and assemble, to enter the pinion seat of the drive box. The pressure of the hydraulic cylinder is more concentrated, which can avoid assembly damage to the pinion and pinion bearing caused by uneven force due to blunt force. The assembly efficiency and accuracy are improved, reducing labor time and labor intensity, and reducing workpiece damage. The pinion loading platform of this invention adopts an arc plate structure, which can effectively accommodate the pinion and avoid radial sliding of the pinion, thereby further avoiding workpiece damage caused by workpiece instability and other safety hazards such as impact damage from objects.

[0057] The platform of this invention is easy to operate, and the number of personnel required for assembly is greatly reduced compared to the past. This reduces labor time and labor intensity, improves assembly efficiency, and lowers costs. At the same time, it enables rapid assembly of small gears underground, minimizing the impact on the underground construction schedule.

[0058] The above embodiments of the present invention are merely illustrative examples and are not the only ones. All modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A hydraulic assembly platform for the main drive pinion of a tunnel boring machine, characterized in that: The system includes a pinion loading platform (28), a gripping sleeve (29), and a pinion adjusting device (30). One end of the pinion (32) is provided with a pinion fixing shaft (35), and the other end is provided with a pinion spline shaft (34). A pinion bearing (33) is provided on the pinion fixing shaft (35), and a pinion adjusting device (30) is provided between the pinion bearing (33) and the pinion (32). The gripping sleeve (29) includes a pinion fastening flange (21), a clamping plate fastening flange (23), a clamping plate connecting pipe (24), and a clamping plate (25). The pinion fastening flange (21) is welded to the end face of one side of the clamping plate connecting pipe (24), and the clamping plate fastening flange (23) is welded to the end face of the clamping plate connecting pipe (24). One end face is welded to the end face opposite to the pinion fastening flange (21) of the clamping plate connecting pipe (24). The clamping plate fastening flange (23) and the clamping plate (25) are engaged by clamping plate screws (22); the cylinder connecting flange (19) and the pinion fastening flange (21) are engaged by connecting flange screws (18); the pinion loading platform (28) includes an end plate (1), a cylinder seat arc plate (2), a cylinder (3), a cylinder seat connecting flange (12), a pinion seat connecting flange (13), a pinion seat arc plate (14), a connecting sleeve (17), and a cylinder connecting flange (19). The cylinder seat connecting flange (12) and the pinion seat connecting flange (13) Connected by cylinder seat connecting screw (11); the pinion (32) is set on the pinion seat arc plate (14), the pinion spline shaft (34) is axially inserted into the pinion fastening flange (21), the clamp fastening flange (23) and the clamp connecting pipe (24), the clamp fastening flange (23) meshes with the pinion spline shaft (34); the pinion connecting screw (20) is screwed into the pinion lifting hole (37) along the central through hole of the pinion fastening flange (21) and tightened; the clamp (25) is radially inserted into the pinion relief groove (36) along the pinion spline shaft (34), so that the threaded hole of the clamp (25) is aligned with the through hole of the clamp fastening flange (23), and the clamp is clamped. Screws (22) are screwed into the threaded hole of the clamp plate (25) through the through hole of the clamp plate fastening flange (23) and tightened; the hydraulic cylinder (3) is operated to bring the hydraulic cylinder connecting flange (19) close to the pinion fastening flange (21), and the hydraulic cylinder connecting flange (19) is connected to the pinion fastening flange (21) by connecting flange screws (18); the hydraulic cylinder (3) moves the pinion (32) slowly forward, and when it is close to the large gear ring, it stops moving and uses a tool to clamp the connecting sleeve (17) to adjust the circumferential angle of the pinion (32). When it is in the meshing position with the inner teeth of the large gear ring, it continues to move forward and makes the pinion bearing (33) enter the drive box pinion seat (40) until it is installed in place.

2. The shield machine main drive pinion hydraulic assembly platform according to claim 1, characterized in that: The inner diameter of the pinion fastening flange (21), the clamp fastening flange (23) and the clamp connecting pipe (24) is determined according to the diameter of different pinion spline shafts (34), and the number of teeth and module of the internal gear ring of the clamp fastening flange (23) are matched with those of the pinion spline shaft (34).

3. The shield machine main drive pinion hydraulic assembly platform according to claim 1, characterized in that: The pinion adjustment device (30) includes a pad (27) and a fixing magnet (26). The pad (27) is placed between the pinion bearing (33) and the pinion (32). The fixing magnet (26) is used to attract the pad (27) onto the pinion (32).

4. The shield machine main drive pinion hydraulic assembly platform according to claim 1, characterized in that: The pinion loading platform (28) adopts an arc plate structure, which can effectively accommodate the pinion (32) and prevent the pinion (32) from sliding radially; the base of the pinion loading platform (28) is a segmented and integrated structure.

5. The shield machine main drive pinion hydraulic assembly platform according to claim 3, characterized in that: The cylinder (3) is a single-stage hydraulic cylinder, controlled by the hydraulic system of the tunnel boring machine. The cylinder body diameter of the cylinder (3) is slightly smaller than the diameter of the upper arc plate (4) and the lower arc plate (10) of the cylinder fixing, and the cylinder body length is slightly smaller than the cylinder seat arc plate (2). During the propulsion process, a support is added at the position of the drive box spacer connecting flange (39) to adjust the position of the pinion bearing (33) and the drive box pinion seat (40).

6. The shield machine main drive pinion hydraulic assembly platform according to claim 5, characterized in that: The pinion loading platform (28) also includes an upper arc plate (4) for fixing the hydraulic cylinder, a connecting plate (5), a lifting lug (6), an angle steel (9) for fixing the hydraulic cylinder, and a lower arc plate (10) for fixing the hydraulic cylinder; the hydraulic cylinder seat arc plate (2) and the pinion seat arc plate (14) are made by rolling steel plates into a whole circle and then cutting them into rectangular arc plates. The axial length of the pinion seat arc plate (14) is determined according to the length of the pinion (32); the end plate (1) is made by splicing two semi-circular steel plates with different diameters. The diameter of the smaller circle is the same as the diameter of the hydraulic cylinder (3), and the diameter of the larger circle is the same as the diameter of the smaller circle. The diameter is the same as the outer diameter of the cylinder seat arc plate (2); the large semicircle of the end plate (1) is welded to one side end face of the cylinder seat arc plate (2); the cylinder seat connecting flange (12) is welded to the other side end face opposite to the end plate (1); the pinion seat connecting flange (13) is welded to one side end face of the pinion seat arc plate (14); the drive box connecting flange (16) is welded to the other side end face opposite to the pinion seat arc plate (14) and the pinion seat connecting flange (13); the two cylinders are fixed to the lower arc plate (10) arrangement. On the inner semi-cylindrical side of the cylinder seat arc plate (2), one piece is close to the end plate (1), and the other piece is close to the cylinder seat connecting flange (12); the cylinder (3) is placed on the inner circular surface of the two cylinder fixing lower arc plates (10), with the rodless end face in contact with the plane of the end plate (1), and the cylinder fixing upper arc plate (4) is placed at the corresponding position on the cylinder fixing lower arc plate (10). The cylinder (3) is fastened by the cylinder fixing screw (7) and the cylinder fixing nut (8); the larger circular hole of the connecting sleeve (17) is fitted into the cylinder (3). The piston rod is welded and fixed. The cylinder connecting flange (19) is welded to the connecting sleeve (17) on the opposite side of the piston rod of the cylinder (3). There are eight lifting lugs (6). Four lugs are evenly welded to the four corners of the side profile of the semi-cylinder of the cylinder seat arc plate (2) and the pinion seat arc plate (14). The cylinder seat connecting flange (12) and the pinion seat connecting flange (13) are connected by the cylinder seat connecting screw (11). The drive box connecting flange (16) and the drive box (31) are connected by the drive box connecting screw (15).

7. The shield machine main drive pinion hydraulic assembly platform according to claim 6, characterized in that: The cylinder seat connecting flange (12) and the pinion seat connecting flange (13) are circular sector-shaped steel plates divided into a whole ring. Their inner diameters are the same as the inner diameters of the cylinder seat arc plate (2) and the pinion seat arc plate (14). The cylinder seat connecting flange (12) has eight through holes machined near its outer circle, and the pinion seat connecting flange (13) has eight threaded through holes machined at the pitch circle diameter and angle corresponding to the through holes of the cylinder seat connecting flange (12). The drive box connecting flange (16) is a circular sector-shaped steel plate divided into a whole ring. Its inner diameter is the same as the inner diameter of the pinion seat arc plate (14). The pitch circle diameter corresponding to the threaded hole of the lower half of the drive box spacer connecting flange (39) is... The diameter and angle are machined with eight through holes; the connecting sleeve (17) is a cylindrical steel bar with a stepped through hole at its axial center, wherein the small circle diameter is the same as the inner diameter of the oil cylinder connecting flange (19), the large circle diameter is slightly larger than the piston rod diameter of the oil cylinder (3), and its outer circle is knurled; the oil cylinder connecting flange (19) is a circular steel plate with sixteen through holes machined near its outer circle; the small gear fastening flange (21) is a circular steel plate with sixteen threaded through holes machined near its outer circle, the pitch circle diameter of the threaded through holes is the same as that of the oil cylinder connecting flange (19) and is evenly distributed, its outer circle diameter is the same as that of the oil cylinder connecting flange (19), and a through hole is machined in the center of the steel plate.

8. The shield machine main drive pinion hydraulic assembly platform according to claim 3, characterized in that: The clamp fastening flange (23) is a circular annular steel plate with sixteen through holes machined near its outer circle. A gear ring is machined into its inner hole to mesh with the small gear spline shaft (34). The clamp connecting pipe (24) is a circular hollow steel pipe with an inner diameter slightly larger than the maximum diameter of the small gear spline shaft (34), and its length plus the thickness of the clamp fastening flange (23) equals the length of the small gear spline shaft (34). The clamp (25) is a circular sector-shaped steel plate divided into two parts before being split. Sixteen threaded through holes are machined near the outer circle. The outer circle diameter is the same as that of the clamp fastening flange (23), and the inner circle diameter is slightly smaller than that of the pinion relief groove (36). The pad (27) is a circular fan-shaped steel plate divided into two parts. Its inner diameter is slightly smaller than that of the pinion fixing shaft (35), its outer diameter is slightly larger than that of the pinion (32), and its thickness is slightly smaller than that between the pinion (32) and the pinion bearing (33). The fixing magnet (26) is a rectangular permanent magnet.

9. A method of using the hydraulic assembly platform for the main drive pinion of a tunnel boring machine as described in claim 6, characterized in that, Includes the following steps: 1) First, hoist the pinion (32) so that the pinion fixed shaft (35) faces upward. Heat install the pinion bearing (33) until the pinion fixed shaft (35) is in place. Insert the two pads (27) into the gap between the pinion bearing (33) and the pinion (32) to fix the pinion bearing (33) and prevent axial displacement. Use two fixing magnets (26) to attract the two pads (27) onto the pinion (32). 2) Flip the hoisting pinion (32) so that the pinion spline shaft (34) faces upward. Insert the pinion fastening flange (21), clamp fastening flange (23) and clamp connecting pipe (24) into the pinion spline shaft (34) along the axial direction to the bottom. The clamp fastening flange (23) meshes with the pinion spline shaft (34). Use the pinion connecting screw (20) to screw into the pinion hoisting hole (37) along the center through hole of the pinion fastening flange (21) and tighten it. 3) Insert the two clamping plates (25) radially into the pinion relief groove (36) along the pinion spline shaft (34) so ​​that the threaded hole of the clamping plate (25) is aligned with the through hole of the clamping plate fastening flange (23). Take the clamping plate screw (22) and screw it into the threaded hole of the clamping plate (25) along the through hole of the clamping plate fastening flange (23) and tighten it. 4) Lift the welded parts of the lifting lug (6), pinion seat connecting flange (13), pinion seat arc plate (14) and drive box connecting flange (16) horizontally to the drive box spacer connecting flange (39), align the eight through holes of the drive box connecting flange (16) with the threaded holes of the lower half of the drive box spacer connecting flange (39), and then screw the drive box connecting screws (15) into the threaded holes of the lower half of the drive box spacer connecting flange (39) through the through holes of the drive box connecting flange (16) and tighten them. 5) Hoist the end plate (1), cylinder seat arc plate (2), cylinder (3), cylinder fixing upper arc plate (4), connecting plate (5), lifting lug (6), cylinder fixing screw (7), cylinder fixing nut (8), cylinder fixing angle steel (9), cylinder fixing lower arc plate (10), cylinder seat connecting flange (12), connecting sleeve (17) and cylinder connecting flange (19) assembly to the pinion seat connecting flange (13), align the eight through holes of the cylinder seat connecting flange (12) with the threaded holes of the pinion seat connecting flange (13), and then screw the cylinder seat connecting screw (11) into the threaded holes of the pinion seat connecting flange (13) along the through holes of the cylinder seat connecting flange (12) and tighten it. 6) Hoist the pinion (32) onto the pinion seat arc plate (14), with the side of the pinion spline shaft (34) facing the cylinder (3). Operate the cylinder (3) to bring the cylinder connecting flange (19) close to the pinion fastening flange (21). Rotate the pinion (32) to align the through hole of the cylinder connecting flange (19) with the threaded hole of the pinion fastening flange (21). Then, use the connecting flange bolt (18) to screw into the threaded hole of the pinion fastening flange (21) along the through hole of the cylinder connecting flange (19) and tighten it. 7) Operate the cylinder (3) to move the pinion (32) forward slowly. When it gets close to the large gear ring, stop moving and use a tool to clamp the connecting sleeve (17) to adjust the circumferential angle of the pinion (32). When it is in meshing position with the inner teeth of the large gear ring, continue to move forward and let the pinion bearing (33) enter the pinion seat (40) of the drive box. Stop pushing after it has entered 10mm. Take out the fixing magnet (26) and pad (27) through the observation port (38) of the drive box and continue to push until it is installed in place. 8) After the pinion (32) is installed, remove the clamping plate screw (22), connecting flange screw (18), pinion connecting screw (20), cylinder seat connecting screw (11) and drive box connecting screw (15) in sequence, remove the gripping sleeve (29) and pinion loading platform (28) and repeat steps 1) to 7) to install the remaining pinion (32).

10. The method of using the hydraulic assembly platform for the main drive pinion of a tunnel boring machine according to claim 9, characterized in that, The inner diameter of the welded parts of the pinion fastening flange (21), clamp fastening flange (23) and clamp connecting pipe (24) mentioned in step 2) is adjusted according to the diameter of different pinion spline shafts (34), and the internal gear ring of the clamp fastening flange (23) is adjusted according to the number of teeth and module of the pinion spline shaft (34); The cylinder (3) mentioned in step 7) is controlled by the hydraulic system of the tunnel boring machine; during the propulsion process, a support is added at the position of the drive box spacer connecting flange (39) to adjust the position of the pinion bearing (33) and the drive box pinion seat (40) for more precise adjustment.

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