Auxiliary mounting device for main bearing of shield tunneling machine

Abstract

The invention relates to the technical field of shield tunneling machine main bearing installation, and discloses a shield tunneling machine main bearing auxiliary installation device which comprises a main body, two installation tables are fixedly connected to the top of the main body, an installation frame is rotatably connected to the outer surface of one installation table, and an inner bearing seat is slidably connected to the top of one installation table; and the top of the other mounting table is in sliding connection with an outer bearing seat. The arc-shaped plates make contact with the surfaces of the rollers, so that physical constraint can be formed on the vertical rollers to a certain degree, the situation that the rollers accidentally slip off from the inner bearing seat due to shaking or inclination in the process of hoisting the inner bearing seat is reduced, and the risk that the rollers fall off to cause damage or potential safety hazards is reduced; and the mounting efficiency of bearing mounting is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shield machine main bearing installation, and specifically relates to an auxiliary installation device for the main bearing of a shield machine. Background Technique

[0002] A shield machine is a mechanized device that integrates excavation, soil extraction, support, and lining in tunnel construction. The shield machine has a fast construction speed, high precision, and good safety. The shield machine has a wide range of applications in track construction due to its unique advantages. When the shield machine is operating, it bears complex forces and torques. The main bearing of the shield machine, as the main load-bearing component supporting the cutter head of the shield machine, has a quite high weight and precision. Generally, when installing the main bearing of a shield machine, it is necessary to install the horizontal rollers and vertical rollers inside it separately, and then install the inner bearing with the vertical rollers into the outer bearing by hoisting. Since the vertical rollers on the inner bearing are prone to sliding and falling during the hoisting process due to the shaking during hoisting, it not only affects the bearing installation efficiency but also easily poses accidental risks. Summary of the Invention

[0003] The purpose of the present invention is to provide an auxiliary installation device for the main bearing of a shield machine to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is an auxiliary installation device for the main bearing of a shield machine, including a main body. Two installation platforms are fixedly connected to the top of the main body. An installation frame is rotatably connected to the outer surface of one of the installation platforms. An inner bearing seat is slidably connected to the top of one of the installation platforms, and an outer bearing seat is slidably connected to the top of the other installation platform. It also includes; A lifting mechanism, which includes a lifting frame, several connecting chains for lifting the inner bearing seat, and a sliding mechanism for transmission; The sliding mechanism includes several piston cylinders and an L-shaped rod for driving the piston cylinders to slide; The bottom of the lifting frame is slidably connected to the outer wall of the top of the main body. The tops of several connecting chains are fixedly connected to the output end of the lifting frame. The end of the connecting chain away from the lifting frame is threadedly connected to the top of the inner bearing seat.

[0005] Furthermore, a cross frame is fixedly connected to the output end of the lifting frame. A hollow frame is fixedly connected to the bottom of the cross frame. Several rectangular grooves are opened on the outer surface of the hollow frame.

[0006] Furthermore, a connecting component is arranged inside the hollow frame. The connecting component includes a return spring fixedly connected to the inner wall of the top of the hollow frame, and a sliding plate is fixedly connected to the bottom of the return spring.

[0007] Further, several long rods are rotatably connected to the outer surface of the sliding plate. One end of the long rod away from the sliding plate slides through the outside of the rectangular groove. A sliding rod is rotatably connected to the bottom of the sliding plate.

[0008] Further, several L-shaped rods are slidably connected to the side walls of the cross-shaped frame. The top outer wall of the piston cylinder is fixedly connected with an L-shaped rod. Compression springs are fixedly connected to both the left and right sides of the L-shaped rod. The L-shaped rod is slidably connected to the side wall of the cross-shaped frame. One end of the L-shaped rod away from the piston cylinder is rotatably connected to the long rod. A hollow cylinder is fixedly connected to the outer surface of the piston cylinder. The hollow cylinder is communicated with the piston cylinder.

[0009] Further, a piston rod is slidably connected to the inside of the piston cylinder. A second tension spring is fixedly connected to the top of the piston rod. The top of the second tension spring is fixedly connected to the top inner wall of the piston cylinder. An active rod is slidably connected to the inside of the hollow cylinder. An auxiliary spring is fixedly connected to one end of the active rod close to the L-shaped rod. The end of the auxiliary spring away from the active rod is fixedly connected to the inside of the hollow cylinder.

[0010] Further, an auxiliary mechanism is arranged on the side wall of the piston cylinder. The auxiliary mechanism includes a short rod rotatably connected to one end of the active rod away from the L-shaped rod. One end of the short rod away from the active rod is rotatably connected to an arc-shaped plate. A spring hollow cylinder is slidably connected to the outer surface of the arc-shaped plate. One end of the spring hollow cylinder away from the arc-shaped plate is slidably connected to the inside of the piston cylinder.

[0011] Further, several air inlet holes are formed in the outer surface of the spring hollow cylinder. An airbag ring is fixedly connected to the side wall of the short rod. An air inlet hose is fixedly connected to one end of the spring hollow cylinder close to the airbag ring. The end of the air inlet hose away from the spring hollow cylinder is fixedly connected to the side wall of the airbag ring. The airbag ring is communicated with the spring hollow cylinder through the air inlet hose.

[0012] Further, a weight mechanism is arranged at the bottom of the cross-shaped frame. The weight mechanism includes an auxiliary rod rotatably connected to the bottom of the L-shaped rod. One end of the auxiliary rod away from the L-shaped rod is rotatably connected to an auxiliary disc. An L-shaped ring is rotatably connected to the outer surfaces of several auxiliary discs.

[0013] Further, a support mechanism is arranged on the inner wall of the L-shaped ring. The support mechanism includes a spherical rod rotatably connected to the inner wall of the L-shaped ring. A weight is rotatably connected between several spherical rods. The weight is slidably connected to the outer surface of the sliding rod.

[0014] The present invention has the following beneficial effects: 1. In the present invention, as the cross frame rises along with the lifting frame, the sliding plate and the sliding rod will slide downward under the elastic force of the return spring. At this time, when the sliding plate moves downward, multiple long rods will drive the L-shaped rod to slide. When the L-shaped rod slides, it will drive the piston cylinder and the arc plate to fit and press the rollers on the inner bearing seat. The contact of multiple arc plates with the surfaces of several rollers can, to a certain extent, physically constrain the vertical rollers, reducing the situation where the rollers accidentally slip off the inner bearing seat due to shaking or tilting during the lifting of the inner bearing seat, reducing the risk of damage or safety hazards caused by the falling of the rollers, and thus improving the installation efficiency of the bearing installation.

[0015] 2. In the present invention, when multiple L-shaped rods slide, the auxiliary disk will push the L-shaped ring to move downward. When the L-shaped ring moves downward, it will fit at the corner of the inner bearing seat and drive the counterweight block to slide downward through multiple spherical rods. When the counterweight block slides downward, the overall inner bearing seat will move downward again, and the weight of the lower part of the inner bearing seat can be increased when the counterweight block moves downward to offset the shaking generated by the inertia of the inner bearing seat during lifting and moving, reducing the shaking transmitted to the installation position during assembly installation due to movement, improving the stability of the inner bearing seat during assembly movement, reducing installation errors caused by shaking or tilting, and improving the stability during subsequent installation.

[0016] 3. In the present invention, when the inner bearing seat moves downward for assembly installation, the piston rod will contact the top outer wall of the outer bearing seat. When the cross frame continues to move downward, the piston rod will squeeze the gas inside the piston cylinder. At this time, after being squeezed, the gas will first push the spring hollow cylinder to slide. When the spring hollow cylinder slides, the gas between the spring hollow cylinder and the piston cylinder will enter the airbag ring through the air inlet hole and the air inlet hose and cause it to expand. Subsequently, when the airbag ring continues to slide, the gas in the piston cylinder will push the arc plate to slide on the surfaces of several rollers through the movable rod, causing the rollers to rotate on the surface of the inner bearing seat, which can reduce the situation where the local surface of the rollers is tilted in position on the surface of the inner bearing seat due to excessive local stress on the rollers when being squeezed by the arc plate, enhancing the accuracy during the downward installation of the inner bearing seat.

[0017] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic cross-sectional structure diagram of a local structure of the present invention; Figure 3 Schematic diagram of the main body of the present invention; Figure 4 Schematic partial cross-sectional view of the lifting mechanism of the present invention; Figure 5 Schematic diagram of the auxiliary mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram at position A in; Figure 7 Schematic diagram of a partial structure of the auxiliary mechanism of the present invention; Figure 8 Schematic diagram of the counterweight mechanism of the present invention; Figure 9 Schematic bottom view structure diagram of the cross frame of the present invention.

[0020] In the drawings, the list of components represented by each reference numeral is as follows: In the figure: 1, main body; 101, mounting table; 102, mounting frame; 103, inner bearing seat; 104, outer bearing seat; 2, lifting mechanism; 201, lifting frame; 202, cross frame; 203, hollow frame; 21, connecting assembly; 211, sliding plate; 212, sliding rod; 213, long rod; 3, sliding mechanism; 301, L-shaped rod; 302, piston cylinder; 303, hollow cylinder; 304, piston rod; 305, movable rod; 4, auxiliary mechanism; 401, arc-shaped plate; 402, short rod; 403, spring hollow cylinder; 404, airbag ring; 5, counterweight mechanism; 501, auxiliary rod; 502, auxiliary disk; 503, L-shaped ring; 51, support mechanism; 511, spherical rod; 512, counterweight block. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1 - Figure 8As shown in the figure, the present invention is an auxiliary installation device for the main bearing of a shield machine, including a main body 1. Two mounting platforms 101 are fixedly connected to the top of the main body 1. A mounting frame 102 is rotatably connected to the outer surface of one of the mounting platforms 101. An inner bearing seat 103 is slidably connected to the top of one of the mounting platforms 101, and an outer bearing seat 104 is slidably connected to the top of the other mounting platform 101. It also includes; A lifting mechanism 2, the lifting mechanism 2 includes a lifting frame 201, a plurality of connecting chains for lifting the inner bearing seat 103, and a sliding mechanism 3 for transmission; The sliding mechanism 3 includes a plurality of piston cylinders 302 and an L-shaped rod 301 for driving the piston cylinders 302 to slide; The bottom of the lifting frame 201 is slidably connected to the outer wall of the top of the main body 1. The tops of a plurality of connecting chains are fixedly connected to the output end of the lifting frame 201. The end of the connecting chain away from the lifting frame 201 is threadedly connected to the top of the inner bearing seat 103. First, both the outer bearing seat 104 and the inner bearing seat 103 are placed on the top of the mounting platform 101. Subsequently, the staff distributes the horizontally placed rollers into the outer bearing seat 104, and at the same time places the vertically placed rollers on the top of the mounting frame 102. Then, the mounting frame 102 is rotated to install the vertically placed rollers to be installed into the inner bearing seat 103.

[0023] A cross frame 202 is fixedly connected to the output end of the lifting frame 201. A hollow frame 203 is fixedly connected to the bottom of the cross frame 202. A plurality of rectangular grooves are formed on the outer surface of the hollow frame 203. As the cross frame 202 rises with the lifting frame 201, the sliding plate 211 and the sliding rod 212 will slide downward under the elastic force of the return spring.

[0024] A connecting component 21 is arranged inside the hollow frame 203. The connecting component 21 includes a return spring fixedly connected to the inner wall of the top of the hollow frame 203, and the bottom of the return spring is fixedly connected to a sliding plate 211.

[0025] A plurality of long rods 213 are rotatably connected to the outer surface of the sliding plate 211. The end of the long rod 213 away from the sliding plate 211 slides through the outside of the rectangular groove. A sliding rod 212 is rotatably connected to the bottom of the sliding plate 211. At this time, the plurality of long rods 213 will drive the L-shaped rod 301 to slide when the sliding plate 211 moves downward.

[0026] A plurality of L-shaped rods 301 are slidably connected to the side wall of the cross-shaped frame 202. The outer wall of the top of the piston cylinder 302 is fixedly connected to the L-shaped rod 301. Compression springs are fixedly connected to both the left and right sides of the L-shaped rod 301. The L-shaped rod 301 is slidably connected to the side wall of the cross-shaped frame 202. One end of the L-shaped rod 301 away from the piston cylinder 302 is rotatably connected to the long rod 213. The outer surface of the piston cylinder 302 is fixedly connected to a hollow cylinder 303. The hollow cylinder 303 is communicated with the piston cylinder 302. When the inner bearing seat 103 moves downward for assembly and installation, the piston rod 304 will contact the outer wall of the top of the outer bearing seat 104. When the cross-shaped frame 202 continues to move downward, the piston rod 304 will squeeze the gas inside the piston cylinder 302.

[0027] A piston rod 304 is slidably connected to the inside of the piston cylinder 302. A second tension spring is fixedly connected to the top of the piston rod 304. The top of the second tension spring is fixedly connected to the inner wall of the top of the piston cylinder 302. A movable rod 305 is slidably connected to the inside of the hollow cylinder 303. One end of the movable rod close to the L-shaped rod 301 is fixedly connected to an auxiliary spring. The end of the auxiliary spring away from the movable rod 305 is fixedly connected to the inside of the hollow cylinder 303. Subsequently, when the airbag ring 404 continues to slide, the gas in the piston cylinder 302 will push the arc-shaped plate 401 to slide on the surface of a plurality of rollers through the movable rod 305, causing the rollers to rotate on the surface of the inner bearing seat 103.

[0028] An auxiliary mechanism 4 is provided on the side wall of the piston cylinder 302. The auxiliary mechanism 4 includes a short rod 402 rotatably connected to one end of the movable rod 305 away from the L-shaped rod 301. One end of the short rod 402 away from the movable rod 305 is rotatably connected to an arc-shaped plate 401. The outer surface of the arc-shaped plate 401 is slidably connected to a spring hollow cylinder 403. One end of the spring hollow cylinder 403 away from the arc-shaped plate 401 is slidably connected to the inside of the piston cylinder 302. At this time, the gas after being squeezed will first push the spring hollow cylinder 403 to slide. When the spring hollow cylinder 403 slides, the gas between the spring hollow cylinder 403 and the piston cylinder 302 will enter the airbag ring 404 through the air inlet holes and the air inlet hose and cause it to expand.

[0029] A plurality of air inlet holes are formed on the outer surface of the spring hollow cylinder 403. An airbag ring 404 is fixedly connected to the side wall of the short rod 402. An air inlet hose is fixedly connected to one end of the spring hollow cylinder 403 close to the airbag ring 404. One end of the air inlet hose away from the spring hollow cylinder 403 is fixedly connected to the side wall of the airbag ring 404. The airbag ring 404 is communicated with the spring hollow cylinder 403 through the air inlet hose.

[0030] A counterweight mechanism 5 is provided at the bottom of the cross frame 202. The counterweight mechanism 5 includes an auxiliary rod 501 rotatably connected to the bottom of the L-shaped rod 301. One end of the auxiliary rod 501 away from the L-shaped rod 301 is rotatably connected to an auxiliary disk 502. The outer surfaces of a plurality of auxiliary disks 502 are rotatably connected to an L-shaped ring 503. When the plurality of L-shaped rods 301 slide, the auxiliary disk 502 will push the L-shaped ring 503 to move downward.

[0031] A support mechanism 51 is provided on the inner wall of the L-shaped ring 503. The support mechanism 51 includes a spherical rod 511 rotatably connected to the inner wall of the L-shaped ring 503. A counterweight block 512 is rotatably connected between a plurality of spherical rods 511. The counterweight block 512 is slidably connected to the outer surface of the sliding rod 212. The auxiliary disk 502 will push the L-shaped ring 503 to move downward. When the L-shaped ring 503 moves downward, it will fit against the corner of the inner bearing seat 103 and drive the counterweight block 512 to slide down through a plurality of spherical rods 511. When the counterweight block 512 slides down, it will cause the entire inner bearing seat 103 to move downward again.

[0032] During use, first place both the outer bearing seat 104 and the inner bearing seat 103 on the top of the mounting table 101. Then, the staff distributes the horizontally placed rollers into the outer bearing seat 104. At the same time, place the vertically placed rollers on the top of the mounting frame 102 and then rotate the mounting frame 102 to install the vertically placed rollers that need to be installed into the inner bearing seat 103. After installation, connect the connecting chain to the inner bearing seat 103 and then start the lifting frame 201. When the lifting frame 201 is working, it will drive the inner bearing seat 103 with the installed vertical rollers to rise. Then, the staff slides the lifting frame 201 to move it to the top of the outer bearing seat 104. After that, start the lifting frame 201 again to control the inner bearing seat 103 to slide down into the outer bearing seat 104 to complete the installation of the bearing.

[0033] When the lifting frame 201 drives the cross frame 202 to rise, the sliding plate 211 will push the sliding plate 211 and the sliding rod 212 to slide downward under the elastic force of the return spring. When the sliding plate 211 slides downward, it will drive the L-shaped rod 301 connected to it to slide towards the middle of the cross frame 202 through a plurality of long rods 213. When the L-shaped rod 301 slides, it will drive the piston cylinder 302 and the arc plate 401 to slide and squeeze the rollers on the inner bearing seat 103 during the sliding process, which can physically restrain the vertical rollers to a certain extent, reduce the situation that the rollers accidentally slide off the inner bearing seat 103 due to shaking or tilting during the process of the lifting frame 201 driving the inner bearing seat 103 to be lifted, reduce the risk of damage or safety hazards caused by the falling of the rollers, and thus improve the installation efficiency of the bearing installation.

[0034] When multiple L-shaped rods 301 slide towards the hollow frame 203, the sliding of the multiple L-shaped rods 301 will push the L-shaped ring 503 to slide downward through the auxiliary rod 501 and the auxiliary disc 502. When the L-shaped ring 503 slides, it will fit against the inner corner of the inner bearing seat 103. Subsequently, when the L-shaped ring 503 slides downward, it will drive the counterweight 512 to slide synchronously through multiple spherical rods 511. When the sliding rod 212 slides downward under the action of the return spring, it will rotate at the bottom of the sliding plate 211. Subsequently, when the spherical rod 511 pushes the counterweight 512 to slide downward on the sliding rod 212, the overall center of gravity of the inner bearing seat 103 will move downward. The downward movement of the counterweight 512 can offset the possible sway caused by inertia during lifting and moving by increasing the lower weight. The change in the center weight of the inner bearing seat 103 caused by the downward movement of the counterweight 512 can reduce the sway generated during the assembly movement, reduce the transfer of the sway generated during movement to the installation position during assembly and installation, improve the stability of the inner bearing seat 103 during the assembly movement, reduce the installation errors caused by sway or tilt, and improve the stability during subsequent installation.

[0035] When the lifting frame 201 drives the inner bearing seat 103 to move downward for assembly and installation, the downward movement of the cross frame 202 will cause the piston rod 304 to contact the top outer wall of the outer bearing seat 104. Subsequently, when the cross frame 202 continues to move downward, the piston rod 304 will slide inside the piston cylinder 302 and squeeze the gas inside the piston cylinder 302. When the piston rod 304 squeezes the gas inside the piston cylinder 302, it will first push the spring hollow cylinder 403 to slide inside the piston cylinder 302. When the spring hollow cylinder 403 slides, it will squeeze the gas between the spring hollow cylinder 403 and the piston cylinder 302 and make it enter the inside of the airbag ring 404 through the air inlet hole and the air inlet hose and cause it to expand. Subsequently, when the gas inside the piston cylinder 302 continues to be squeezed by the piston rod 304, the gas will push the movable rod 305 to slide. When the movable rod 305 slides, it will push the arc plate 401 to slide on the surface of several rollers through the short rod 402. The sliding of the arc plate 401 on the roller surface can reduce the situation where the local surface of the roller is inclined in position on the surface of the inner bearing seat 103 due to excessive local force on the roller when the arc plate 401 squeezes the roller, enhancing the accuracy during the downward installation of the inner bearing seat 103.

[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A shield machine main bearing auxiliary installation device, comprising a main body (1), wherein the top of the main body (1) is fixedly connected to two installation platforms (101), wherein the outer surface of one of the installation platforms (101) is rotatably connected to a mounting frame (102), wherein the top of one of the installation platforms (101) is slidably connected to an inner bearing seat (103), and the top of the other installation platform (101) is slidably connected to an outer bearing seat (104), wherein: Also includes; A lifting mechanism (2), the lifting mechanism (2) comprising a lifting frame (201), a plurality of connecting chains for lifting the inner bearing seat (103), and a sliding mechanism (3) for transmission; The sliding mechanism (3) comprises a plurality of piston cylinders (302) and an L-rod (301) for driving the piston cylinders (302) to slide; The bottom of the lifting frame (201) is slidably connected to the top outer wall of the main body (1), the tops of a plurality of connecting chains are fixedly connected to the output end of the lifting frame (201), and one end of the connecting chain away from the lifting frame (201) is threadedly connected to the top of the inner bearing seat (103).

2. The shield machine main bearing auxiliary installation device according to claim 1, characterized in that: The output end of the lifting frame (201) is fixedly connected to a cross frame (202), the bottom of the cross frame (202) is fixedly connected to a hollow frame (203), and the outer surface of the hollow frame (203) is provided with a plurality of rectangular grooves.

3. The shield machine main bearing auxiliary installation device according to claim 2 is characterized in that: A connecting assembly (21) is arranged inside the hollow frame (203), and the connecting assembly (21) comprises a return spring fixedly connected to the inner wall of the top of the hollow frame (203), and a sliding plate (211) is fixedly connected to the bottom of the return spring.

4. The shield machine main bearing auxiliary installation device according to claim 3 is characterized in that: The outer surface of the sliding plate (211) is rotatably connected to a plurality of long rods (213), one end of the long rod (213) away from the sliding plate (211) slides through the outside of the rectangular groove, and the bottom of the sliding plate (211) is rotatably connected to a sliding rod (212).

5. The shield machine main bearing auxiliary installation device according to claim 4, characterized in that: A plurality of L-rods (301) are slidably connected to the side wall of the cross frame (202); the top outer wall of the piston cylinder (302) is fixedly connected to the L-rod (301); the left and right sides of the L-rod (301) are fixedly connected to compression springs; the L-rod (301) is slidably connected to the side wall of the cross frame (202); one end of the L-rod (301) away from the piston cylinder (302) is rotatably connected to the long rod (213); the outer surface of the piston cylinder (302) is fixedly connected to a hollow cylinder (303); and the hollow cylinder (303) is connected to the piston cylinder (302).

6. The shield machine main bearing auxiliary installation device according to claim 5, characterized in that: The piston cylinder (302) is slidably connected to a piston rod (304) inside, the top of the piston rod (304) is fixedly connected to a second tension spring, the top of the second tension spring is fixedly connected to the top inner wall of the piston cylinder (302), the hollow cylinder (303) is slidably connected to a movable rod (305) inside, one end of the movable rod close to the L rod (301) is fixedly connected to an auxiliary spring, and one end of the auxiliary spring away from the movable rod (305) is fixedly connected to the inside of the hollow cylinder (303).

7. The shield machine main bearing auxiliary installation device according to claim 6, characterized in that: The side wall of the piston cylinder (302) is provided with an auxiliary mechanism (4), and the auxiliary mechanism (4) comprises a short rod (402) rotatably connected to an end of the movable rod (305) away from the L rod (301); the end of the short rod (402) away from the movable rod (305) is rotatably connected to an arc plate (401); the outer surface of the arc plate (401) is slidably connected to a spring hollow cylinder (403); and the end of the spring hollow cylinder (403) away from the arc plate (401) is slidably connected to the inside of the piston cylinder (302).

8. The shield machine main bearing auxiliary installation device according to claim 7, characterized in that: The outer surface of the spring hollow cylinder (403) is provided with a plurality of air inlet holes, the side wall of the short rod (402) is fixedly connected to an air bag ring (404), one end of the spring hollow cylinder (403) close to the air bag ring (404) is fixedly connected to an air inlet hose, one end of the air inlet hose away from the spring hollow cylinder (403) is fixedly connected to the side wall of the air bag ring (404), and the air bag ring (404) is connected to the spring hollow cylinder (403) via the air inlet hose.

9. The shield machine main bearing auxiliary installation device according to claim 8, characterized in that: A counterweight mechanism (5) is provided at the bottom of the cross frame (202), the counterweight mechanism (5) comprising an auxiliary rod (501) rotatably connected to the bottom of the L rod (301), one end of the auxiliary rod (501) away from the L rod (301) being rotatably connected to an auxiliary disk (502), and the outer surfaces of a plurality of the auxiliary disks (502) being rotatably connected to L rings (503).

10. The shield machine main bearing auxiliary installation device according to claim 8, characterized in that: The inner wall of the L-ring (503) is provided with a support mechanism (51), the support mechanism (51) comprising a spherical rod (511) rotatably connected to the inner wall of the L-ring (503), a counterweight block (512) rotatably connected between a plurality of the spherical rods (511), and the counterweight block (512) is slidably connected to the outer surface of the sliding rod (212).

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