A device for installing a main drive pinion of a shield tunneling machine underground and a method of use

Abstract

The application provides a device and a method for installing a main drive pinion of a shield tunneling machine underground, a spline plate is installed at the center of a support disc, the center of the support disc is provided with a bolt hole for fixing with the spline of a main bearing pinion, the spline plate is provided with a connecting sleeve corresponding to the spline of the main bearing pinion, the support disc is fixed with the spline of the main bearing pinion through the bolt hole and a first fixing bolt, the support disc is provided with a plurality of positioning bolt holes corresponding to the flange bolt positions of the front shield body for installing a speed reducer, a lead screw is installed in the positioning bolt holes and the flange bolt positions for alignment and fixing, and a moving nut is arranged at the front and back positions of the connection between the lead screw and the support disc. The application realizes the stable and slow horizontal movement of the main drive pinion towards the installation position by slowly rotating the moving nuts at the corresponding inner and outer sides, and realizes the horizontal installation of the main drive pinion.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, and in particular to a device and method for installing the main drive pinion in the underground shaft of a TBM. Background Technology

[0002] Tunnel boring machines (TBMs) are widely used in the construction of urban subway tunnels. As large-scale mechanical equipment for underground construction, during the tunneling process, the cutterhead of the TBM scrapes and breaks up the soil in front of it by cutting rollers, and then uses segments to support the tunnel and discharge the excavated soil. The TBM then pushes the rear segments to propel itself forward, thus realizing the tunneling work.

[0003] The cutting rotation power of the tunnel boring machine cutterhead comes from the output power of multiple main drive motors or main drive motors and is transmitted to the main drive pinion by the reducer. The main drive pinion then drives the large gear ring to rotate. The large gear ring is rigidly connected to the cutterhead by bolts. With the support of bearings, the cutterhead can rotate. Combined with the forward propulsion of the tunnel boring machine, the cutterhead can perform cutting and rolling operations on the soil in front.

[0004] Since the main bearing of a tunnel boring machine (TBM) is a crucial component for the rotation and core support of the cutterhead, a main drive failure during TBM construction could lead to a series of construction risks, necessitating timely repairs of the main drive. Due to the limited space in the main drive area of ​​the front shield, previous disassembly and installation of the main bearing pinion were hampered by insufficient workspace, hindering high-quality and rapid operations. This often resulted in secondary damage to critical structural components, causing injuries to personnel and long-term disruptions to propulsion operations, posing significant safety hazards.

[0005] In the past, the maintenance of the main drive pinion of a tunnel boring machine (TBM) was usually carried out at the TBM maintenance site. The front shield of the TBM was placed vertically, and the pinion could be vertically hoisted into place through the installation holes. However, during the tunneling process, the front shield is placed horizontally, and the installation of the pinion needs to be pushed horizontally into the main drive. Due to the large weight of the pinion and the small working space of the front shield, the installation of the pinion needs to extend into the main drive, making it impossible to install the main drive pinion by vertical hoisting. As a result, the task of installing the main drive pinion during TBM construction cannot be carried out. Summary of the Invention

[0006] To address the aforementioned problems, this invention aims to provide a device and method for installing the main drive pinion gear underground in a tunnel boring machine. The device comprises a support plate and a keyway. The keyway is installed at the center of the support plate, which has bolt holes for fixing to the spline of the main drive pinion gear. The keyway has connecting sleeves that mate with the spline of the main drive pinion gear. The support plate and the spline of the main drive pinion gear, positioned within the connecting sleeve, are fixed together by bolt holes and first fixing bolts. The support plate has several positioning bolt holes on its circumference that correspond to the flange bolt positions on the front shield body used for mounting the reducer. Lead screws are installed in the positioning bolt holes and flange bolt positions for alignment and fixing. Moving nuts are provided at both the front and rear positions of the lead screw connection to the support plate. By slowly rotating the corresponding inner and outer moving nuts, the main drive pinion gear moves horizontally and stably towards the installation position, thus achieving horizontal installation of the main drive pinion gear underground.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A device for installing a main drive pinion gear underground in a tunnel boring machine includes a support plate and a keyway. The keyway is installed at the center of the support plate. The center of the support plate has bolt holes for fixing to the spline of the main drive pinion gear. The keyway has a connecting sleeve that corresponds to the spline of the main drive pinion gear. The support plate and the spline of the main drive pinion gear, which is positioned and installed in the connecting sleeve, are fixed together by bolt holes and first fixing bolts. The support plate has several positioning bolt holes on its circumference that correspond to the flange bolt positions on the front shield body for installing the reducer. Screws are installed in the positioning bolt holes and flange bolt positions for alignment and fixing. Moving nuts are provided at the front and rear positions of the connection between the screws and the support plate.

[0009] Furthermore, the main drive pinion is equipped with a bearing and a bearing housing, and the support plate is provided with two arc-shaped fixing grooves for the bearing housing that correspond to and cooperate with the bearing housing.

[0010] Furthermore, a positioning screw is also installed between the bearing housing and the two arc-shaped fixing grooves of the bearing housing.

[0011] Furthermore, the connecting sleeve is provided with spline teeth corresponding to the spline of the pinion gear of the main bearing.

[0012] Furthermore, the connecting sleeve of the keyboard is provided with a fixed flange in the circumferential direction, and the fixed flange is fixedly connected to the support plate.

[0013] Furthermore, the fixed flange and the support plate are respectively provided with a number of corresponding matching bolt mounting holes in the circumferential direction, and a rigid connection is achieved by installing a second fixing bolt in the bolt mounting holes.

[0014] Furthermore, two rotating holes are symmetrically provided between the bolt mounting holes on the support plate.

[0015] Furthermore, the lead screw is a high-strength threaded lead screw used to fix the support plate.

[0016] To achieve the above objectives, the present invention also discloses a method for using a device for installing a main drive pinion in the underground shaft of a tunnel boring machine, comprising the following steps:

[0017] S1: After connecting the main drive pinion to the bearing and bearing housing, the spline of the main bearing pinion is inserted into the spline key. Then, the support plate is rotated through the two rotating holes to align the bolt mounting holes of the support plate with the bolt mounting holes of the spline key. The effective connection between the two is completed by installing the second fixing bolt.

[0018] S2: The support plate is fixed to the spline of the main bearing pinion by the first fixing bolt, and the spline and the support plate are connected and fixed tightly by the second fixing bolt;

[0019] S3: Pass the positioning screw of the appropriate size through the arc-shaped fixing groove of the bearing seat of the support plate and connect it to the bearing seat. At this time, the preparation work before the installation of the main drive pinion is completed.

[0020] S4: Fix the screw rods on the bolt holes on the front shield body for mounting the reducer mounting flange, and screw a movable nut into the outer end of each screw rod. Screw the movable nut into the fixed screw rod 2-3 cm in the same vertical direction.

[0021] S5: Use slings to lift the prepared pinion assembly. After lifting, adjust the axial orientation of the main drive pinion to the horizontal direction, with the support plate at the rear. Then, slowly push it into the mounting hole of the main drive pinion and make all the positioning bolt holes on the circumferential direction of the support plate correspond to the lead screw one by one. Then, screw the moving bolt into the lead screw on the outside of the support plate again.

[0022] S6: Using the top sling support, slowly loosen the movable nuts at the front end of the support plate one by one, and then tighten the movable nuts at the rear end of the support plate one by one. At this time, keep the direction of the support plate parallel to the flange mounting surface of the reducer.

[0023] S7: By adjusting the tightness of the nut by moving it back and forth, the main drive pinion can be moved forward slowly. After several operations, the main drive pinion is pushed into the installation position. After confirming that the pinion is effectively supported longitudinally, the device is removed in sequence and the bearing seat is fixed, thus enabling the horizontal installation of the main drive pinion in the well.

[0024] Beneficial effects: This invention features a support plate and a keyway. The keyway is installed at the center of the support plate, which has bolt holes for fixing to the spline of the main bearing pinion. The keyway has connecting sleeves that mate with the spline of the main bearing pinion. The support plate and the spline of the main bearing pinion, which is positioned and installed in the connecting sleeve, are fixed together by bolt holes and first fixing bolts. The support plate has several positioning bolt holes on its circumference that correspond to the flange bolt positions on the front shield body for mounting the reducer. Screws are installed in the positioning bolt holes and flange bolt positions for alignment and fixing. Moving nuts are provided at the front and rear positions of the connection between the screws and the support plate. By slowly rotating the corresponding inner and outer moving nuts, the main driving pinion moves horizontally and stably toward the installation position, thus achieving the horizontal installation of the main driving pinion underground. Attached Figure Description

[0025] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0026] Figure 1 This is a top view of the device for installing the main drive pinion in the shaft of a tunnel boring machine, as described in an embodiment of the present invention.

[0027] Figure 2 for Figure 1 Sectional view of AA;

[0028] Figure 3 This is a schematic diagram of the device and bearing housing for installing the main drive pinion in the underground shaft of a tunnel boring machine, as described in an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram illustrating the installation of the device for installing the main drive pinion in the underground shaft of a tunnel boring machine, as described in an embodiment of the present invention, along with the bearing housing, bearing, and main drive pinion.

[0030] Figure 5 This is a schematic diagram of the working state of the device for installing the main drive pinion in the underground shaft of a tunnel boring machine, as described in an embodiment of the present invention. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] See Figure 1-5 A device for installing a main drive pinion gear in a tunnel boring machine (TBM) includes a support plate 1 and a keyway 2. The keyway 2 is installed at the center of the support plate 1. The support plate 1 has bolt holes 101 at its center for fixing to the spline 301 of the main drive pinion gear. The keyway 2 has a connecting sleeve 201 that corresponds to the spline 301 of the main drive pinion gear 3. The support plate 1 and the spline 301 of the main drive pinion gear 3 are fixed together by bolt holes 101 and first fixing bolts 4. The support plate 1 has several positioning bolt holes 102 on its circumference that correspond to the positions of the flange bolts on the front shield body for installing the reducer. Screws 103 are installed in the positioning bolt holes 102 and the flange bolt positions for alignment and fixing. Moving nuts 104 are provided at the front and rear positions of the connection between the screws 103 and the support plate 1.

[0035] This embodiment uses a support plate and a keyway. The keyway is installed at the center of the support plate. The center of the support plate has bolt holes for fixing to the spline of the main bearing pinion. The keyway has a connecting sleeve that corresponds to the spline of the main bearing pinion. The support plate and the spline of the main bearing pinion, which is positioned and installed in the connecting sleeve, are fixed together by the bolt holes and the first fixing bolt. The support plate has several positioning bolt holes on its circumference that correspond to the flange bolt positions on the front shield body for mounting the reducer. Screws are installed in the positioning bolt holes and flange bolt positions for alignment and fixing. Moving nuts are provided at the front and rear positions of the connection between the screw and the support plate. By slowly rotating the corresponding inner and outer moving nuts, the main driving pinion moves steadily and slowly horizontally toward the installation position, thereby achieving the horizontal installation of the main driving pinion underground.

[0036] In a specific example, the main drive pinion 3 is equipped with a bearing 302 and a bearing housing 303, and the support plate 1 is provided with two bearing housing arc-shaped fixing grooves 105 that correspond to and cooperate with the bearing housing 303.

[0037] In this embodiment, the support plate is provided with two arc-shaped fixing grooves for bearing seats that correspond to and cooperate with the bearing seats. The support plate and bearing seats are positioned and installed through the two arc-shaped fixing grooves, which further improves the firmness of the positioning connection between the support plate and the main drive pinion, thereby improving the accuracy, safety and stability of the horizontal installation of the main drive pinion.

[0038] In a specific example, a positioning screw 5 is also installed between the bearing housing 303 and the two bearing housing arc-shaped fixing grooves 105.

[0039] This embodiment uses a positioning screw to prevent the bearing housing from disengaging from the support plate and to position it, thereby improving the accuracy and safety of the horizontal installation of the main drive pinion.

[0040] In a specific example, the connecting sleeve 201 is provided with spline teeth corresponding to the spline 301 of the main bearing pinion.

[0041] In this embodiment, the connecting sleeve is provided with spline teeth corresponding to the spline of the main bearing pinion, thereby improving the accuracy of the positioning and installation of the connecting sleeve and the spline of the main bearing pinion and preventing rotation.

[0042] In a specific example, the connecting sleeve 201 of the keyboard 2 is provided with a fixed flange 202 in the circumferential direction, and the fixed flange 202 is fixedly connected to the support plate 1.

[0043] In this embodiment, the connecting sleeve is integrally formed with the circumferential fixing flange, and the fixing flange is used to achieve the fixed installation between the keypad and the support plate.

[0044] In a specific example, the fixed flange 202 and the support plate 1 are respectively provided with a number of corresponding matching bolt mounting holes in the circumferential direction, and a rigid connection is achieved by installing a second fixing bolt 6 in the bolt mounting holes.

[0045] In this embodiment, the fixed flange and the support plate are connected by a second fixing bolt to achieve a detachable rigid connection, which makes the structure robust and easy to install and disassemble.

[0046] In a specific example, two rotating holes 106 are also symmetrically provided between the bolt mounting holes on the support plate 1.

[0047] This embodiment uses two rotating holes to facilitate the rotation and adjustment of the support plate, making it easier to align the bolt mounting holes between the support plate and the fixed flange, thus facilitating installation.

[0048] In a specific example, the lead screw 103 is a high-strength threaded lead screw used to fix the support plate 1.

[0049] It should be noted that, since the main drive pinion weighs several hundred kilograms or more, the support plate in this embodiment can be equipped with up to 16 sets of high-strength threaded screws in the circumferential direction to improve the support connection between the support plate and the front shield body, thereby better supporting the main drive pinion.

[0050] In this specific implementation, the fixing bolts are high-strength bolts, used to achieve rigid connection between various components; the moving nut is a high-strength nut, whose size matches the thread size of the lead screw, and is nested on the lead screw to provide support, fixation, adjustment, and movement functions for the support plate.

[0051] Example 2

[0052] To achieve the above objectives, this embodiment also discloses a method for using a device for installing a main drive pinion in the shaft of a tunnel boring machine, comprising the following steps:

[0053] S1: Connect the main drive pinion 3 to the bearing 302 and bearing seat 303, then fit the spline 2 onto the spline 301 of the main bearing pinion, and then rotate the support plate 1 through the two rotating holes 106 to align the bolt mounting holes of the support plate 1 with the bolt mounting holes of the spline 2. Complete the effective connection between the two by installing the second fixing bolt 6.

[0054] S2: The support plate 1 is fixed to the main bearing pinion spline 301 by the first fixing bolt 4, and the spline 2 is connected and fixed tightly to the support plate 1 by the second fixing bolt 6.

[0055] S3 passes the positioning screw 5 of appropriate size through the bearing seat arc-shaped fixing groove 105 of the support plate 1 and connects it to the bearing seat 303. At this time, the preparation work before the installation of the main drive pinion 3 is completed.

[0056] S4: Fix screw rods 103 on the bolt holes on the front shield body for mounting the reducer mounting flange, and screw a movable nut 104 into the outer end of each screw rod 103. Screw the movable nut 104 into the fixed screw rod 103 2-3 cm in. At this time, the movable nuts 104 are in the same vertical direction.

[0057] S5: Use slings to lift the prepared small gear kit. After lifting, adjust the axial orientation of the main drive small gear 3 to the horizontal direction. The support plate 1 is located at the rear. Then slowly push it into the mounting hole of the main drive small gear and make all the positioning bolt holes 102 on the circumferential direction of the support plate 1 nested with the lead screw 103 one by one. Then screw the moving bolt 104 into the lead screw on the outside of the support plate 1 again.

[0058] S6: Using the top sling support, slowly loosen the movable nuts 104 located at the front end of the support plate 1 one by one, and then tighten the movable nuts 104 at the rear end of the support plate one by one. At this time, keep the direction of the support plate 1 parallel to the flange mounting surface of the reducer.

[0059] S7 can move the main drive pinion 3 forward slowly by adjusting the tightness of the nut 104. After multiple operations, the main drive pinion 3 is pushed into the installation position. After confirming that the pinion is effectively supported longitudinally, the device is removed in sequence, and the bearing seat 303 is fixed, thus realizing the operation of horizontally installing the main drive pinion downhole.

[0060] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for installing a main drive pinion in the shaft of a tunnel boring machine, characterized in that, The device includes a support plate (1) and a keypad (2). The keypad (2) is installed at the center of the support plate (1). The center of the support plate (1) is provided with bolt holes (101) for fixing with the main bearing pinion spline (301). The keypad (2) is provided with a connecting sleeve (201) that corresponds to the main bearing pinion spline (301) of the main drive pinion (3). The support plate (1) and the main bearing pinion spline (301) positioned and installed in the connecting sleeve (201) are fixed by the bolt holes (101) and the first fixing bolt (4). The support plate (1) is provided with several positioning bolt holes (102) on the circumference that correspond to the flange bolt positions on the front shield body for installing the reducer. The screw rod (103) is installed in the positioning bolt holes (102) and the flange bolt positions for positioning and fixing. The screw rod (103) is provided with moving nuts (104) at the front and rear positions of the connection between the support plate (1) and the screw rod (103).

2. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 1, characterized in that, The main drive pinion (3) is equipped with a bearing (302) and a bearing seat (303), and the support plate (1) is provided with two bearing seat arc-shaped fixing grooves (105) that correspond to and cooperate with the bearing seat (303).

3. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 2, characterized in that, A positioning screw (5) is also installed between the bearing housing (303) and the two bearing housing arc-shaped fixing grooves (105).

4. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 1, characterized in that, The connecting sleeve (201) is provided with spline teeth corresponding to the spline (301) of the main bearing pinion.

5. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 2, characterized in that, The connecting sleeve (201) of the keypad (2) is provided with a fixed flange (202) in the circumferential direction, and the fixed flange (202) is fixedly connected to the support plate (1).

6. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 5, characterized in that, The fixed flange (202) and the support plate (1) are respectively provided with a number of corresponding matching bolt mounting holes in the circumferential direction. A rigid connection is achieved by installing a second fixing bolt (6) in the bolt mounting hole.

7. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 6, characterized in that, Two rotating holes (106) are symmetrically provided between the bolt mounting holes on the support plate (1).

8. The device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 1, characterized in that, The lead screw (103) is a high-strength threaded lead screw used to fix the support plate (1).

9. A method of using the device for installing the main drive pinion in the shaft of a tunnel boring machine according to claim 7, characterized in that, Includes the following steps: S1: Connect the main drive pinion (3) to the bearing (302) and bearing housing (303), then fit the spline (2) onto the spline (301) of the main bearing pinion, and then rotate the support plate (1) through the two rotating holes (106) to align the bolt mounting holes of the support plate (1) with the bolt mounting holes of the spline (2), and complete the effective connection between the two by installing the second fixing bolt (6); S2: The support plate (1) is fixed to the main bearing pinion spline (301) by the first fixing bolt (4), and the spline (2) is connected and fixed to the support plate (1) by the second fixing bolt (6); S3: Pass the positioning screw (5) of appropriate size through the bearing seat arc-shaped fixing groove (105) of the support plate (1) and connect it to the bearing seat (303). At this time, the preparation work before the installation of the main drive pinion (3) is completed. S4: Fix screw rods (103) on the bolt holes of the front shield body for mounting the reducer mounting flange, and screw a movable nut (104) into the outer end of each screw rod (103). Screw the movable nut (104) into the fixed screw rod (103) 2-3 cm in. At this time, the movable nut (104) is in the same vertical direction. S5: Use slings to lift the prepared small gear kit. After lifting, adjust the axial orientation of the main drive small gear (3) to the horizontal direction. The support plate (1) is located at the rear. Then slowly push it into the mounting hole of the main drive small gear and make all the positioning bolt holes (102) on the circumferential direction of the support plate (1) nested with the lead screw (103) one by one. Then screw the moving nut (104) into the lead screw on the outside of the support plate (1). S6: Using the top sling support, slowly loosen the movable nuts (104) located at the front end of the support plate (1), and then tighten the movable nuts (104) at the rear end of the support plate. At this time, keep the direction of the support plate (1) parallel to the flange mounting surface of the reducer. S7: By adjusting the tightness of the nut (104) by moving it back and forth, the main drive pinion (3) can be moved forward slowly. After multiple operations, the main drive pinion (3) is pushed into the installation position. After confirming that the pinion is effectively supported longitudinally, the device is removed in sequence and the bearing seat (303) is fixed. This enables the horizontal installation of the main drive pinion in the well.

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