A device and method for disassembling and assembling a pinion of a shield machine in a hole

Abstract

The present invention provides an in-hole disassembly and assembly device and method for a pinion of a shield machine, comprising a first tool and a second tool, wherein the first tool comprises a sliding rod, a spline shaft is fixedly mounted on the end of the sliding rod, and a positioning through hole is provided in the middle of the spline shaft along its axial direction; the second tool comprises a connecting cylinder and a plurality of connecting plates connected in sequence, a second positioning flange is fixedly provided at the end face of the connecting plate away from the connecting cylinder, a through hole is provided in the middle of the second positioning flange along its axial direction, and a sliding hole is provided in the middle of the connecting cylinder along its axial direction. This in-hole disassembly and assembly device and method for a pinion of a shield machine achieves the purpose of disassembling and assembling the pinion in the countersunk hole of the main drive box in a horizontal state, making the disassembly and assembly operation of the pinion simpler and more convenient; the cooperation between the sliding hole of the second tool and the sliding rod of the first tool ensures the accuracy of the movement displacement of the pinion when disassembling; the disassembled pinion can be directly towed away by the first tool and the second tool, avoiding damage caused by secondary shipment or affecting work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel shield machine excavation construction, and in particular to an in-hole disassembly and assembly device and method for a pinion gear of a shield machine. Background Art

[0002] The shield machine is a special construction equipment with a metal shell, which performs tunnel soil excavation, soil removal, machine propulsion and segment installation under the protection of the shield shell. It is widely used in tunnel projects such as subways, railways, highways, municipal engineering, and hydropower.

[0003] The main drive system of the shield machine is the core drive component of the shield machine, which directly plays the role of power conversion and output. In the actual shield construction process, main drive failure is an extremely common situation, and the damage of the pinion gear is one of the more difficult to deal with these failures. Because the main drive is in a vertical state during the tunneling of the shield machine, and the pinion gear is installed inside the drive box, the axis needs to be kept horizontal during installation. The weight of the pinion gear is very high, and the space of the installation hole is very limited, and the internal hoisting operation cannot be performed. In this case, the installation operation of the pinion gear is very difficult. Therefore, it is very necessary to design a device and method for disassembling and assembling the pinion gear in the main drive countersunk hole in a horizontal state. Summary of the invention

[0004] In view of this, the present invention aims to overcome the defects existing in the above-mentioned prior art and provide an in-hole disassembly and assembly device and method for the pinion of a shield machine, which can remove the pinion in the main drive countersunk hole of the shield machine when the hole is horizontal.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A shield machine pinion in-hole disassembly and assembly device comprises a first tool and a second tool, wherein the first tool comprises a slide bar, a spline shaft is fixedly mounted on the end of the slide bar, and a positioning through hole is arranged in the middle of the spline shaft along its axial direction;

[0007] The second tooling includes a connecting tube and a plurality of connecting plates connected in sequence, wherein the plurality of connecting plates are vertically fixed to the end surface of the connecting tube, a second positioning flange is fixed to the end surface of the connecting plate away from the connecting tube, a through hole is provided in the middle portion of the second positioning flange along its axial direction, a sliding hole is provided in the middle portion of the connecting tube along its axial direction, and an inner diameter dimension of the sliding hole corresponds to an outer diameter dimension of the sliding rod.

[0008] Furthermore, a first positioning flange is fixedly provided at the end of the spline shaft, a connecting flange is fixedly provided at the end of the slide rod, and mounting holes corresponding in position are provided on the first positioning flange and the connecting flange.

[0009] Furthermore, a spline is provided on the circumferential outer wall of the spline shaft, and the spline extends along the axial direction of the spline shaft.

[0010] Furthermore, a cover is sleeved on the end of the slide rod away from the spline shaft, a fixing through hole is provided in the middle of the cover along its axial direction, and a first threaded hole is provided at the end of the slide rod along its axial direction, and the first threaded hole is opposite to the fixing through hole.

[0011] Furthermore, a first lifting ear is provided on the circumferential side wall of the cover.

[0012] Furthermore, a second lifting ear is provided on the circumferential side wall of the connecting tube.

[0013] A method for removing a pinion gear of a shield machine in a hole comprises the following steps:

[0014] 1) Insert the spline shaft into the cavity of the bearing gland at the rear end of the pinion gear, then pass the bolt through the positioning hole set on the spline shaft and screw it into the third threaded hole set on the end of the pinion gear to connect and fix the spline shaft to the pinion gear;

[0015] 2) Use a suitable screw to push the pinion out a certain distance through the several screw holes on the bearing gland;

[0016] 3) Assembling and fixing the spline shaft and the slide rod through the first positioning flange and the connecting flange;

[0017] 4) Align the second positioning flange of the second tooling with the second threaded hole of the end of the drive box, assemble and fix them with bolts, and pass the slide rod through the slide hole of the second tooling;

[0018] 5) Fix the cover to the end of the slide rod;

[0019] 6) Use the chain hook to hook the first lifting ear of the cover, and slowly drag the pinion gear to the inner cavity of the second tooling;

[0020] 7) Lift the pinion together with the first and second tooling to a suitable location for disassembly.

[0021] A method for installing a pinion gear of a shield machine in a hole comprises the following steps:

[0022] 1) Insert the spline shaft into the cavity of the bearing gland at the rear end of the pinion gear, then pass the bolt through the positioning hole set on the spline shaft and screw it into the third threaded hole set on the end of the pinion gear to connect and fix the spline shaft to the pinion gear;

[0023] 2) Assembling and fixing the spline shaft and the slide rod through the first positioning flange and the connecting flange;

[0024] 3) Pass the slide rod through the slide hole of the second tooling and pull the pinion into the cavity of the second tooling;

[0025] 4) Hoist the pinion together with the first fixture and the second fixture to the corresponding mounting countersunk hole of the drive box, align the second positioning flange mounting hole of the second fixture with the second threaded hole provided at the end of the drive box, and use bolts to connect and fix the second fixture to the drive box;

[0026] 5) Mark the end face of the end slot and the outer ring of the front bearing respectively, and insert wooden wedges with wires into the gap between the front bearing and the pinion gear. The number of wooden wedges should be greater than or equal to three;

[0027] 6) Slowly push the first tooling slide bar to make the front bearing at the front end of the pinion enter the end groove and be installed in place. During this process, adjust the position of the pinion and the bearing gland by pulling the slide bar in multiple directions through the chain to ensure that all mating surfaces can fit normally;

[0028] 7) Insert the screw into the mounting hole on the first positioning flange of the second tooling, move the screw forward and rotate the bearing gland so that the front end of the screw is inserted into the fourth threaded hole of the bearing gland, and continue to push the slide rod;

[0029] 8) Pull out the wooden wedge with the wire before the front bearing is in place, and continue to push the slide bar to push the pinion into the end slot;

[0030] 9) After installing the pinion, check the axial dimension chain to ensure that there is an axial clearance between the front bearing and the pinion after installation to avoid tilting of the front bearing during installation;

[0031] 10) Remove the second tooling and the first tooling, and fix the bearing cover to the fifth threaded hole on the inner side of the drive box with bolts. The installation of the pinion is completed.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] (1) The device and method for disassembling and assembling the pinion gear of the shield machine in the hole achieves the purpose of disassembling and assembling the pinion gear in the countersunk hole of the main drive box in a horizontal state, making the disassembly and assembly operation of the pinion gear simpler and more convenient.

[0034] (2) The device and method for disassembling and assembling the pinion gear of the shield machine in the hole ensures the accuracy of the movement and displacement of the pinion gear when it is disassembled, thereby reducing the occurrence of jamming and damage to the pinion gear, through the cooperation between the sliding hole of the second tooling and the sliding rod of the first tooling.

[0035] (3) The device and method for disassembling and assembling the pinion gear of the shield machine in the hole, the disassembled pinion gear can be directly towed away by the first tooling and the second tooling, avoiding damage caused by secondary shipment or affecting work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 It is a schematic diagram of the positional relationship between a drive box and a pinion gear of a shield machine pinion gear disassembly and assembly device and method in a hole according to the present invention;

[0038] Figure 2 It is a schematic diagram of the overall structure of the first tooling of a device and method for disassembling and assembling a pinion of a shield machine in a hole according to the present invention;

[0039] Figure 3 It is a schematic diagram of the overall structure of the first tooling of a device and method for disassembling and assembling a pinion of a shield machine in a hole according to the present invention;

[0040] Figure 4 It is a schematic diagram of the cross-sectional structure of the first tooling of a device and method for disassembling and assembling a pinion of a shield machine in a hole according to the present invention;

[0041] Figure 5 It is a schematic diagram of the overall structure of the second tooling of a device and method for disassembling and assembling a pinion of a shield machine in a hole according to the present invention;

[0042] Figure 6 It is a schematic diagram of the overall structure of the second tooling of a device and method for disassembling and assembling a pinion of a shield machine in a hole according to the present invention;

[0043] Figure 7 It is a schematic diagram of the cross-sectional structure of the second tooling of the device and method for disassembling and assembling a pinion of a shield machine in a hole according to the present invention;

[0044] Figure 8 It is a schematic diagram of the disassembly process of the in-hole disassembly and assembly device and method of the pinion gear of a shield machine according to the present invention;

[0045] Fig. 9 It is a schematic diagram of the disassembly process of the in-hole disassembly and assembly device and method of the pinion gear of a shield machine according to the present invention;

[0046] Fig.10 It is a schematic diagram of the disassembly process of the in-hole disassembly and assembly device and method of the pinion gear of a shield machine according to the present invention;

[0047] Fig.11 It is a schematic diagram of the disassembly process of the in-hole disassembly and assembly device and method of the pinion gear of a shield machine according to the present invention;

[0048] Fig.12 It is a schematic diagram of the disassembly process of the in-hole disassembly and assembly device and method of the pinion gear of a shield machine according to the present invention;

[0049] Fig.13It is a schematic diagram of the disassembly process of the in-hole disassembly and assembly device and method of the pinion gear of a shield machine according to the present invention;

[0050] Fig.14 The present invention is a schematic diagram of the installation structure of an in-hole disassembly and assembly device and method for a pinion of a shield machine.

[0051] Description of reference numerals:

[0052] 11-spline shaft; 111-spline; 112-positioning through hole; 12-first positioning flange; 13-connecting flange; 15-slide rod; 151-first threaded hole; 16-cover; 161-fixing through hole; 17-first lifting ear; 21-second positioning flange; 22-connecting plate; 24-connecting cylinder; 241-slide hole; 242-second lifting ear; 3-drive box; 31-end cover; 311-end groove; 32-box cylinder; 321-second threaded hole; 322-fifth threaded hole; 323-observation hole; 4-pinion; 41-bearing pressure cover; 42-third threaded hole; 43-fourth threaded hole; 44-front bearing; 45-rear bearing; 451-embedded groove. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments:

[0057] like Figure 1 to Figure 14 As shown, a device for disassembling and assembling a pinion gear of a shield machine in a hole, wherein the hole is a countersunk hole of a main drive box 3, and a pinion gear 4 is assembled in the countersunk hole. The countersunk hole is a semi-enclosed cavity composed of a surrounding box barrel 32 and an end cover 31 fixed to the end of the box barrel 32. An observation hole 323 is provided at the bottom of the box barrel 32, and an end groove 311 is provided on the end cover 31. A plurality of second threaded holes 321 are provided on the end surface of the open end of the box barrel 32 along its opening direction, and an annular protrusion is provided in the middle of the box barrel 32, and a plurality of fifth threaded holes 322 are provided on the rear end surface of the annular protrusion along its axial direction;

[0058] The front and rear ends of the pinion 4 are respectively provided with a front bearing 44 and a rear bearing 45. The middle part of the rear bearing 45 is provided with an embedding groove 451 along its axial direction, and a plurality of key grooves are provided on the circumferential side wall of the embedding groove 451. The outer cover of the rear bearing 45 is provided with a bearing gland 41. The end surface of the opening end of the bearing gland 41 is provided with a plurality of fourth threaded holes 43, and a plurality of top screw holes are provided at intervals between the fourth threaded holes 43. The rear end surface of the pinion 4 is provided with a third threaded hole 42 along its axial direction. In the assembled state, the front spline shaft 11 of the pinion 4 is socket-connected in the end groove 311, and the fourth threaded hole 43 is fixed to the fifth threaded hole 322 provided in the middle of the housing 32 by bolts.

[0059] The pinion removal device includes a first tool and a second tool. The first tool includes a slide bar 15. A spline shaft 11 is fixedly mounted on the end of the slide bar 15. A first positioning flange 12 is fixedly mounted on the end of the spline shaft 11. A connecting flange 13 is fixedly mounted on the end of the slide bar 15. The first positioning flange 12 and the connecting flange 13 are provided with mounting holes corresponding to the positions. The mounting holes are through holes. The spline shaft 11 and the slide bar 15 are assembled and fixed by bolts inserted into the through holes. A positioning through hole 112 is provided in the middle of the spline shaft 11 along its axial direction.

[0060] In order to position the pinion 4 more accurately, a spline 111 is provided on the circumferential outer wall of the spline shaft 11. The spline 111 extends along the axial direction of the spline shaft 11, and its position and size match the keyway provided on the rear bearing 45 of the pinion 4.

[0061] In order to facilitate the installation of the slide bar 15, a removable cover 16 is sleeved on the end of the slide bar 15 away from the spline shaft 11. A fixing through hole 161 is provided in the middle of the cover 16 along its axial direction. A first threaded hole 151 is provided at the end of the slide bar 15 along its axial direction. The first threaded hole 151 is opposite to the fixing through hole 161. The cover 16 is assembled and fixed to the end of the slide bar 15 by bolts. A first lifting ear 17 is provided on the circumferential side wall of the cover 16 for fixing the position of the fall chain hook.

[0062] The second tooling includes a connecting tube 24 and a plurality of connecting plates 22 connected in sequence. The plurality of connecting plates 22 are vertically fixed to the end surface of the connecting tube 24. An annular second positioning flange 21 is fixed to the end surface of the connecting plate 22 away from the connecting tube 24. A sliding hole 241 is provided in the middle portion of the connecting tube 24 along its axial direction. The inner diameter of the sliding hole 241 corresponds to the outer diameter of the sliding rod 15. A second lifting ear 242 is provided on the circumferential side wall of the connecting tube 24 for overall lifting of the second tooling.

[0063] In order to reduce the overall weight of the first tooling and the second tooling, the interiors of the sliding rod 15 and the connecting tube 24 are both hollow.

[0064] A method for removing a pinion gear of a shield machine in a hole comprises the following steps:

[0065] 1) Remove the bolts tightened in the fourth threaded hole 43 and the fifth threaded hole 322, insert the spline shaft 11 into the embedding groove 451 set at the rear end of the pinion 4, and the spline 111 of the spline shaft 11 and the keyway set on the inner wall of the embedding groove 451 are engaged with each other to determine the circumferential position between the two, and then use a long rod bolt to pass through the positioning through hole 112 set on the spline shaft 11 and screw it into the third threaded hole 42 set at the end of the pinion 4 to connect and fix the spline shaft 11 and the pinion 4 to determine the axial position between the two; (such as Figure 8 (shown)

[0066] 2) Use a suitable screw rod to push the pinion 4 out for a certain distance through the plurality of screw holes provided on the bearing cover 41, so as to reduce the resistance generated by the mutual fit between the end surface of the front bearing 44 of the gear and the bottom surface of the end groove 311, so as to facilitate the pinion 4 to be pulled out; (such as Fig. 9 (shown)

[0067] 3) Use bolts and nuts to assemble and fix the first positioning flange 12 and the connecting flange 13, so that the spline shaft 11 is fixedly connected to the sliding rod 15; (such as Fig.10 (shown)

[0068] 4) Push the second positioning flange 21 of the second tooling toward the pinion 4, pass the slide rod 15 through the second tooling slide hole 241, align the second positioning flange 21 of the second tooling with the second threaded hole 321 provided at the end of the drive box 3, and then use bolts to pass through the mounting holes provided on the outer edge of the second positioning flange 21 and screw into the second threaded hole 321 provided at the rear end of the box tube 32 to assemble and fix the second tooling and the drive box 3; (such as Fig.11 (shown)

[0069] 5) The cover 16 is buckled onto the free end of the slide bar 15, and a bolt is passed through the fixing through hole 161 of the cover 16 and screwed into the first threaded hole 151 of the cover 16, so that the cover 16 is fixedly assembled to the end of the slide bar 15;

[0070] 6) Use the chain hook to hook the first lifting ear 17 of the cover 16, and drag the first tooling and the pinion 4 outward as a whole. During the movement, the slide bar 15 slides along the slide hole 241 of the connecting tube 24 to provide a guide for the pinion 4 until the pinion 4 is slowly dragged into the inner cavity of the second tooling; (such as Fig.12 (shown)

[0071] 7) Use a lifting device to hook the second lifting lug 242 of the second tooling, lift the pinion 4 together with the first tooling and the second tooling to a suitable position for disassembly. Fig.13 (shown)

[0072] A method for installing a pinion gear of a shield machine in a hole (such as Fig.14 As shown), comprising the following steps:

[0073] 1) Insert the spline shaft 11 into the embedding groove 451 provided at the rear end of the pinion gear 4, and the spline 111 of the spline shaft 11 and the keyway provided on the inner wall of the embedding groove 451 engage with each other to determine the circumferential position between the two. Then, use a long-rod bolt to pass through the positioning through hole 112 provided on the spline shaft 11 and screw it into the third threaded hole 42 provided at the end of the pinion gear 4 to connect and fix the spline shaft 11 and the pinion gear 4 to determine the axial position between the two.

[0074] 2) Use bolts and nuts to assemble and fix the first positioning flange 12 and the connecting flange 13, so that the spline shaft 11 is fixedly connected to the sliding rod 15;

[0075] 3) Pass the slide rod 15 through the slide hole 241 provided in the second tooling, and pull the pinion 4 into the cavity of the second tooling;

[0076] 4) hoist the pinion 4 together with the first fixture and the second fixture to the corresponding mounting countersunk hole of the drive box 3, align the mounting hole of the second positioning flange 21 of the second fixture with the second threaded hole 321 provided at the end of the drive box 3, and use bolts to connect and fix the second fixture to the drive box 3;

[0077] 5) Since the position of the positioning pin cannot be directly observed through the observation hole 323, marks are made on the end surface of the end groove 311 and the outer ring of the front bearing 44 before advancement to determine the installation position of the front bearing 44, so that the positioning groove of the outer ring of the front bearing 44 of the pinion 4 is relative to the positioning pin set in the end groove 311 of the drive box 3, and several wooden wedges with lines are inserted into the gap between the front bearing 44 and the pinion 4. The number of wooden wedges is greater than or equal to three, so that the front bearing 44 is more stable during installation and will not deviate due to swinging;

[0078] 6) Slowly push the first tooling slide bar 15 to allow the front bearing 44 provided at the front end of the pinion 4 to enter the end groove 311 and be installed in place. During this process, the slide bar 15 is pulled in multiple directions by the chain to adjust the position of the pinion 4 and the bearing cover 41 to ensure that the mating surfaces can fit normally;

[0079] 7) Insert a screw into the mounting hole on the first positioning flange 12 of the second tooling, move the screw forward and rotate the bearing cover 41, so that the front end of the screw is inserted into the fourth threaded hole 43 of the bearing cover 41 to determine the positioning of the bearing cover 41, and continue to push the slide rod 15;

[0080] 8) Before the front bearing 44 is installed in place, pull out the wooden wedge with a wire, continue to push the slide bar 15, and push the pinion 4 into the end groove 311;

[0081] 9) After installing the pinion 4, check the axial dimension chain to ensure that there is an axial clearance between the installed front bearing 44 and the pinion 4 to avoid the front bearing 44 from being installed tilted;

[0082] 10) The second tooling and the first tooling are removed, and the bearing cover 41 is fixed to the fifth threaded hole 322 provided on the inner side of the drive box 3 by bolts, and the installation of the pinion 4 is completed.

[0083] Note: For fixing methods not explicitly stated in the text, common fixing connection methods such as threaded connection, bonding or welding can be selected as needed.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An in-hole disassembly and assembly device for a pinion gear of a shield machine, characterized in that: The invention comprises a first tool and a second tool, wherein the first tool comprises a slide bar (15), the end of the slide bar (15) is fixedly equipped with a spline shaft (11), and a positioning through hole (112) is arranged in the middle of the spline shaft (11) along its axial direction; the second tool comprises a connecting tube (24) and a plurality of connecting plates (22) connected in sequence, the plurality of connecting plates (22) are vertically fixed to the end surface of the connecting tube (24), a second positioning flange (21) is fixed at the end surface of the connecting plate (22) away from the connecting tube (24), a through hole is arranged in the middle of the second positioning flange (21) along its axial direction, and a sliding hole (241) is arranged in the middle of the connecting tube (24) along its axial direction, and the inner diameter of the sliding hole (241) corresponds to the outer diameter of the slide bar (15); a method for removing a pinion gear of a shield machine in a hole using the above device comprises the following steps: 1) inserting the spline shaft (11) into the cavity of the bearing cover (41) provided at the rear end of the pinion gear (4), then passing the bolt through the positioning through hole (112) provided on the spline shaft (11), and screwing it into the third threaded hole (42) provided at the end of the pinion gear (4), so that the spline shaft (11) and the pinion gear (4) are connected and fixed; 2) Using a suitable screw rod, push the pinion (4) out a certain distance through a plurality of screw holes provided on the bearing gland (41); 3) Assembling and fixing the spline shaft (11) and the slide rod (15) through the first positioning flange (12) and the connecting flange (13); 4) aligning the second positioning flange (21) provided on the second tooling with the second threaded hole (321) provided on the end of the drive box (3), and fixing them by bolts, and passing the slide rod (15) through the slide hole (241) provided on the second tooling; 5) The cover (16) is fixedly mounted on the end of the slide rod (15); 6) Use the chain hook to hook the first lifting ear (17) provided on the cover (16), and slowly drag the pinion (4) to the inner cavity of the second tooling; 7) Lift the pinion (4) together with the first fixture and the second fixture to a suitable location for disassembly.

2. The device for disassembling and assembling a pinion of a shield machine in a hole according to claim 1, characterized in that: A first positioning flange (12) is fixedly provided at the end of the spline shaft (11), and a connecting flange (13) is fixedly provided at the end of the slide rod (15). The first positioning flange (12) and the connecting flange (13) are provided with mounting holes at corresponding positions.

3. The device for disassembling and assembling a pinion of a shield machine in a hole according to claim 1, characterized in that: A spline (111) is provided on the circumferential outer wall of the spline shaft (11), and the spline (111) extends in the axial direction of the spline shaft (11).

4. The device for disassembling and assembling a pinion of a shield machine in a hole according to claim 1, characterized in that: The end of the slide rod (15) away from the spline shaft (11) is sleeved with a cover (16), the middle part of the cover (16) is provided with a fixing through hole (161) along its axial direction, and the end of the slide rod (15) is provided with a first threaded hole (151) along its axial direction, and the first threaded hole (151) is opposite to the fixing through hole (161).

5. The device for disassembling and assembling a pinion gear of a shield machine in a hole according to claim 4, characterized in that: A first lifting ear (17) is provided on the circumferential side wall of the cover (16).

6. The device for disassembling and assembling a pinion of a shield machine in a hole according to claim 1, characterized in that: A second lifting ear (242) is provided on the circumferential side wall of the connecting tube (24).

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