CN111794779A - A kind of assembled trolley for tunnel shield segment support and using method thereof - Google Patents

Abstract

An assembled trolley for tunnel shield segment support and a method of using the same, comprising a movable chassis, a supporting arch, a hydraulic support system, a slide rail and a traction frame; the arches supporting the arch are arranged across the left and right On the two main beams, the hydraulic jacks of the hydraulic support system are arranged vertically on the outer surface of the arched frame, the bottom of which is fixedly connected to the arched frame through the mounting seat, and the top is provided with rubber gaskets in contact with the shield segment; At the bottom of the dome; a transport hook is arranged in the downwardly opening rail of the sliding rail; the traction frame is a horizontal frame beam fixed on one end of the movable chassis, and is connected with the traction equipment to drive the trolley to move. The invention is simple in structure and convenient in construction. The radially arranged jacks provide necessary support for the shield segment, the jacks can be freely replaced according to different pressures, and the support strength meets the design requirements; the traction device and the chassis are connected by a cross to avoid The main force-bearing components are locally deformed, and the components can be replaced at any time, with strong adaptability.

Description

A kind of assembled trolley for tunnel shield segment support and using method thereof

technical field

The invention belongs to the technical field of tunnel engineering construction, and in particular relates to an assembled trolley for supporting tunnel shield segments and a method of using the same.

Background technique

With the expansion of urban scale and the rapid development of urban construction in China, the status of urban underground transportation is prominent, and more and more cities are participating in the construction of urban underground transportation. In the construction of tunnel engineering, the shield method is generally used for construction, which is a fully mechanized construction method in the construction of the underground excavation method. To prevent the collapse into the tunnel, at the same time, use a cutting device to excavate the soil in front of the excavation front, transport it out of the hole through the excavation machine, pressurize it at the back with a jack, and assemble the precast concrete segments to form a tunnel A mechanized construction method for structures. Therefore, the shield segment is the main force-bearing component, and it is necessary to provide necessary temporary support for the shield segment after the construction is completed. At present, there are few special temporary support equipment for shield tunnel segments. To solve this problem, an assembled support trolley for tunnel shield segment support is proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an assembled trolley for supporting tunnel shield segments and a method of using the same, so as to solve the problem of temporary support of shield segments in the prior art.

For realizing the above-mentioned technical purpose, the present invention adopts following technical scheme:

An assembled trolley for tunnel shield segment support, characterized in that: from bottom to top, it includes a movable chassis, a support arch, a hydraulic support system, a slide rail and a traction frame;

The movable chassis includes two left and right main beams arranged in parallel longitudinally, and a roller group is arranged at the bottom of the main beam;

The supporting arch includes a group of arches spaced along the extending direction of the main beam; the arched frame is spanned on the left and right main beams, and the bottom ends of the legs are fixedly connected with the top panel of the main beam;

The hydraulic support system includes a series of hydraulic jacks arranged at intervals along the outer surface of the arched frame, the hydraulic jacks are arranged perpendicular to the outer surface of the arched frame, the bottom of the hydraulic jack is fixedly connected to the arched frame through the mounting seat, and the top is provided with a rubber gasket to connect with the arched frame. Shield segment contact;

The sliding rail is vertically and horizontally arranged at the bottom of the dome of the supporting arch, and is fixedly connected with the dome bottom plate of each arch to connect all the arches as a whole; There are transport hooks;

The traction frame is a horizontal frame beam fixed on one end of the movable chassis, and is connected with the traction equipment to drive the trolley to move.

As a preferred technical solution of the present invention, the mounting base includes a jack bottom plate and a mounting plate, the mounting plate is arranged on the outer surface of the arch frame, and the three are connected by bolts.

Further preferably, the arched frame is in the shape of a door as a whole, including an arched part at the top and a vertical part on both sides; the cross section of the bottom end of the vertical part is narrowed to match the width of the flange of the main beam; correspondingly, the The installation plate includes a flat installation plate and a curved installation plate; the flat installation plate is installed on the outer side of the vertical part of the arch frame, and its bottom surface is flat; the curved installation plate is installed on the outer side of the arch part of the arch frame, Its bottom surface is an arc surface with the curvature of the outer side surface of the arched part adapted to it.

Further preferably, the traction frame is a horizontal frame beam, including a bending-resistant bottom beam, a tensile column, an inclined side beam, a cross-shaped connector and a towing hook, and the bending-resistant bottom beam is provided at the end of the movable chassis, The two ends are respectively fixed with the ends of the two main beams by cross-shaped connecting pieces. The bent bottom beam forms an isosceles triangle frame, and its two ends are respectively fixed with the anti-bending bottom beam and the side panel of the anti-tensile column; the traction hook is a T-shaped plate, including an end plate and a hook, and the end plate is connected with the cross-shaped connecting piece. The outer ends of the tensile columns are fastened.

Further preferably, the cross-shaped connecting piece is a short steel column assembly with a cross-shaped cross steel plate in the center, and includes vertical end plates on both sides and a cross-shaped rib plate arranged in the middle. Bolt hole.

Further preferably, a spacer is arranged between the bottom plate of the slide rail and the bottom plate of the dome of the arch frame, and the three are connected by bolts.

Further preferably, along the extension direction of the arch frame, the top of the middle part of the mounting plate is flat, and the blind holes for bolts are arranged on it to connect with the jack bottom plate with bolt through holes; the tops of the two sides are sloped, and the slopes Some of the corresponding bottom surfaces are provided with blind bolt holes for bolt connection with the upper flange plate of the arch erection bolt through holes.

Further preferably, the arched frame is an I-beam, stiffeners are arranged between the upper and lower flange plates, end plates are arranged at the bottom of the two legs, and the end plates are bolted to the main beam; the main beam is an I-beam. The steel beam is provided with reinforcing ribs between the upper and lower flange plates; the anti-bending bottom beam, the tensile column and the inclined side beam are all I-beam beams with end plates on both sides, and the upper and lower flange plates are provided with Ribs.

Further preferably, a reinforcing rib is correspondingly provided at the bottom of the fixed connection position of the hydraulic jack and the arched frame; a reinforcing rib is correspondingly provided at the bottom of the fixed connection position of the arched frame and the main beam; the top of the roller set is provided with a reinforcing rib. Arched frame.

In addition, the present invention also provides the above-mentioned construction method of the assembled trolley for tunnel shield segment support, which is characterized in that it includes the following steps:

Step 1: Assembly of the movable chassis: connect the main beam and the pulley block through the bolt holes;

Step 2: Connect the movable chassis to the arch frame: connect the arch frame and the main beam with bolts;

Step 3: Install the mounting seat: connect the mounting seat and the arched frame through the bolt holes;

Step 4: Installation of the hydraulic support system: connect the hydraulic jack and the mounting seat with bolts;

Step 5. Put the trolley in place: move the trolley assembled in step 4 to the designated construction position;

Step 6. Adjust the top tightness: adjust the hydraulic jack to tighten the shield segment, and pressurize it to reach the predetermined pressure;

Step 7. Installation of the traction device: connect and fix the traction frame and the movable chassis, and connect the traction device to the traction hook at the end of the traction frame;

Step 8. Installation of the slide rail device: install the slide rail and the transport hook in the middle of the bottom of the arch frame;

Step 9, switch positions; start the traction device, and drive the entire trolley to move to the next station through the traction frame until the construction is completed.

Compared with the prior art, the technical advantages of the present invention are:

1. The structure of the present invention is simple, the production and construction are convenient, the required components can be prefabricated and transported to the site for assembly operations, and after the assembly is completed in the safe area, it can be moved to the shield segment to be supported, and then the jack can be pressurized, Provide necessary support for shield segments through radially arranged jacks, and the support strength meets the design requirements;

2. The traction device and the movable chassis are connected by cross connectors, which can effectively avoid local deformation of the main force-bearing components. If the cross components are deformed, they can be replaced at any time;

3. The space in the middle of the arch frame can be used for daily operations by the construction personnel, which is more convenient than the general tunnel support;

4. Set up a movable base, the shield segments that need to be supported not far away can be moved by the roller group, and the shield segments that need to be supported for a long time can be disassembled and fixed for a long time;

5. The jacks can be freely replaced according to different pressure needs, and the number of arch frames and the number of jacks can be selected according to different support needs. The adjustment method is flexible and adaptable.

Description of drawings

1 is a schematic diagram of the overall structure of the assembled trolley involved in the present invention;

2 is a schematic diagram of the overall structure of the movable chassis involved in the present invention;

Fig. 3 is the structural schematic diagram of the main beam involved in the present invention;

Fig. 4 is the partial enlarged structure schematic diagram of A in Fig. 3;

5 is a schematic diagram of the overall structure of the arch frame involved in the present invention;

6 is a schematic diagram of the assembly structure of the movable chassis and the supporting arch frame involved in the present invention;

7 is a schematic top plan view of the plane mounting plate involved in the present invention;

FIG. 8 is a schematic plan view of the lower side of the plane mounting plate involved in the present invention;

FIG. 9 is a schematic top plan view of the curved mounting plate involved in the present invention;

Figure 10 is a schematic diagram of the lower side arc surface of the curved mounting plate involved in the present invention;

FIG. 11 is a schematic diagram of the state of the installation seat involved in the present invention after installation;

12 is a schematic structural diagram of the hydraulic jack involved in the present invention;

13 is a schematic diagram of the state of the hydraulic jack involved in the present invention after installation;

14 is a schematic structural diagram of a slide rail and a pad according to the present invention;

15 is a schematic structural diagram of the transport hook involved in the present invention;

16 is a schematic structural diagram of a traction frame involved in the present invention;

17 is a schematic structural diagram of the anti-bending bottom beam involved in the present invention;

18 is a schematic structural diagram of a tensile column involved in the present invention;

19 is a schematic structural diagram of the inclined side beam involved in the present invention;

20 is a schematic structural diagram of a cross-shaped connector involved in the present invention;

Figure 21 is a schematic structural diagram of the towing hook involved in the present invention;

FIG. 22 is a schematic diagram of the use state of the assembled trolley according to the present invention.

Reference numerals: 1-movable chassis, 1.1-main beam, 1.2-roller group, 1.3-reinforcing rib, 2-support arch, 2.1-arch, 2.11-arch, 2.12-vertical, 2.2 -Stiffener, 2.3-End Plate, 3-Hydraulic Support System, 3.1-Hydraulic Jack, 3.2-Mounting Base, 3.21-Jack Bottom Plate, 3.22-Flat Mounting Plate, 3.23-Surface Mounting Plate, 3.3-Rubber Gasket, 4- Bolt blind hole, 5-bolt through hole, 6-slide rail, 7-spacer, 8-transport hook, 9-traction frame, 9.1-flexural bottom beam, 9.2-tensile column, 9.3-inclined side beam, 9.4 - Cross connection, 9.5 - tow hook, 9.6 - rib.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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, but not all of 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.

As shown in Figure 1, an assembled trolley for tunnel shield segment support is specifically composed of five parts: a movable chassis 1, a support arch 2, a hydraulic support system 3, a slide rail 6 and a traction frame 9.

As shown in Figure 2-4, the movable chassis 1 includes two left and right main beams 1.1 arranged in parallel longitudinally. The bottom of the main beam 1.1 is provided with a roller group 1.2; the main beam 1.1 is a large-sized I-beam with stiffeners. The beam is used as one of the main stress-bearing components in the prefabricated support trolley. The large-sized I-shaped steel has good bending resistance and saves materials. The bolt through hole 5 and the bolt through hole 5 used to connect the lower flange plate of the main girder and the roller group 1.2 are provided with reinforcing ribs 1.3 between the upper and lower flange plates, and the layout positions of the reinforcing ribs 1 and 3 are concentrated near the bolt holes; The bottom of the main beam 1.1 is provided with 2 to 4 roller groups 1.2 at intervals. The roller group 1.2 includes a simple steering device and rollers to meet the steering radius required when the assembled support trolley moves forward, which is consistent with the lower flange of the main beam 1.1. Plate bolt connection.

5 and 6, the support arch 2 includes a group of arches 2.1 spaced along the extending direction of the main beam 1.1; The top panel of the beam 1.1 is fixed; the arch frame 2.1 is gate-shaped as a whole, including the arched part 2.11 on the top and the vertical part 2.12 on both sides; the bottom section of the vertical part 2.12 is narrowed and the flange width of the main beam 1.1 match. The supporting arch 2 is a curved I-beam beam with stiffening ribs, and the I-beam has good bending resistance and is an ideal cross-sectional form of an arched structure. Stiffeners 2.2 are arranged between the upper and lower flange plates, and the stiffeners 2.2 are arranged in the support arch to reduce the local deformation of the support arch due to the jack pressure, and the bottom section of the support arch is narrowed to match the main beam. The width of the flange, and there are bolt through holes 5 for connecting the support arch and the main beam; the bottom of the two legs is provided with an end plate 2.3, and the end plate 2.3 is bolted to the main beam 1.1.

As shown in Figure 7-13, the hydraulic support system 3 includes a series of hydraulic jacks 3.1 spaced along the outer surface of the arched frame 2.1. The hydraulic jacks 3.1 are arranged vertically on the outer surface of the arched frame 2.1, and the bottom of the hydraulic jack 3.1 is connected to the arched frame 2.1 through the mounting seat 3.2. Fixed connection, the top is provided with rubber gasket 3.3 to contact the shield tunnel segment, the rubber gasket 3.3 is used to reduce the local deformation of the shield tunnel segment when the force of the hydraulic jack is transmitted to the shield tunnel segment. The mounting seat 3.2 includes a jack bottom plate 3.21 and a mounting plate, the mounting plate is arranged on the outer surface of the arched frame 2.1, and the three are connected by bolts. The mounting plate includes a plane mounting plate 3.22 and a curved mounting plate 3.23; the plane mounting plate 3.22 is installed on the outer side of the vertical part 2.12 of the arch frame 2.1, and connects the hydraulic jacks on both sides to the supporting arch frame, and its bottom surface is flat, The overall side is trapezoidal; the curved mounting plate 3.23 is installed on the outer side of the arched part 2.11 of the arched frame 2.1, and connects the hydraulic jack at the upper arch to the supporting arch. The connecting side of the arch frame is an arc surface that fits together, and the bottom surface is an arc surface that is adapted to the curvature of the outer surface of the arched portion 2.11.

Preferably, the mounting plate 3.22 is along the extension direction of the arched frame 2.1, the top of the middle part is flat, and the blind bolt holes 4 are set on it and the jack bottom plate 3.21 with the bolt through holes 5 is bolted; The corresponding bottom surface is provided with blind bolt holes 4 for bolt connection with the upper flange plate of the arch frame 2.1 provided with bolt through holes 5.

As shown in Figure 14 and Figure 15, the slide rail 6 is vertically and horizontally arranged at the bottom of the dome of the supporting arch 2. It is a slender steel, and its two sides can pass through pulleys and the middle can pass through the transport hook 8, and each arch 2.1. The bottom of the vault is fixedly connected, and all the arched frames 2.1 are connected as a whole; there is a transport hook 8 in the track with the downward opening of the slide rail 6; Block 7, the three are connected by bolts. One side of the cushion block 7 is an arc surface, the arc is consistent with the arched support, and there are bolt holes connected with the arched support. The other side of the cushion block is flat, which is used to connect the slide rail; It is also possible to strengthen the overall rigidity, which is an optional component, and can also be modified to form steel to play a role in strengthening the overall rigidity of the structure.

As shown in Figures 16-21, the traction frame 9 is a horizontal frame beam fixed on one end of the movable chassis 1, and is connected with the traction equipment to drive the trolley to move. The traction frame 9 is a horizontal frame beam, including the anti-bending bottom beam 9.1, the tensile column 9.2, the inclined side beam 9.3, the cross-shaped connecting piece 9.4 and the towing hook 9.5, and the anti-bending bottom beam 9.1 is arranged at the end of the movable chassis 1, The two ends are respectively fixed with the ends of the two main beams 1.1 through the cross-shaped connecting piece 9.4, the tensile column 9.2 is vertically arranged in the middle position of the anti-bending bottom beam 9.1, and its two sides are respectively arranged on an inclined side beam 9.3, and the inclined side beam 9.3 It forms an isosceles triangular frame with the anti-bending bottom beam 9.1, and its two ends are respectively fixed with the anti-bending bottom beam 9.1 and the side panels of the anti-tension column 9.2; the traction hook 9.5 is a T-shaped plate, including end plates and hooks, and the end plates pass through ten The zigzag connector 9.4 is fixedly connected with the outer end of the tensile column 9.2.

The cross-shaped connector 9.4 is an integrally formed structure, which is a short steel column assembly with a cross-shaped cross steel plate in the center, including vertical end plates on both sides and a cross-shaped rib plate arranged in the middle. Bolt holes, one side of the vertical end plate is connected to the main beam 1.1, one side of the vertical end plate is connected to the anti-bending bottom beam 9.1.

The anti-bending bottom beam 9.1 is an I-shaped steel beam with a wide flange. The flange part on one side has bolt holes connected to the main beam, and the flange on one side is connected with the tensile column and the lateral reinforcement column. Connected bolt holes, and there are stiffeners at the bolt holes, and the web part is horizontal to the moving direction to exert its bending resistance; the tensile column 9.2 is an I-shaped steel beam, and the two sides are left with lateral reinforcement columns. Connected bolt holes, one side of the end bolt holes is connected to the anti-bending beam body, and one side is connected to the cross-shaped connector 9.4;

The inclined side beams 9.3 are all I-beam beams with end plates on both sides, and rib plates 9.6 are arranged between the upper and lower flange plates.

In addition, in order to further strengthen the overall structural strength, a reinforcing rib 2.2 is correspondingly provided at the bottom of the fixed connection position of the hydraulic jack 3.1 and the arch frame 2.1; the bottom of the fixed connection position of the arch frame 2.1 and the main beam 1.1 is correspondingly provided with a reinforcing rib 1.3; The top of the roller set 1.2 is provided with an arch 2.1.

The specific construction, as shown in Figure 22, includes the following steps:

Step 1: Assembly of the movable chassis 1: Connect the main beam 1.1 and the pulley block 1.2 through the bolt holes;

Step 2: The movable chassis 1 and the arch frame 2 are fixedly connected: the arch frame 1 and the main beam 1.1 are connected by bolts;

Step 3: Install the mounting seat 3.2: Connect the mounting seat 3.2 and the arch frame 2 through the bolt holes;

Step 4: Installation of the hydraulic support system 3: Connect the hydraulic jack 3.1 and the mounting seat 3.2 with bolts;

Step 5. Put the trolley in place: move the trolley assembled in step 4 to the designated construction position;

Step 6. Adjust the top tightness: adjust the hydraulic jack 3.1 to tighten the shield segment, and pressurize it to reach the predetermined pressure;

Step 7. Installation of the traction device: connect the two cross-shaped connecting pieces 9.4 to the bolt holes reserved for the main beam respectively, and then connect the anti-bending bottom beam 9.1 to the cross connecting piece with bolts. 9.2 is connected to the flexural bottom beam 9.1 as a tension module, and two inclined side beams 9.3 are added from both sides as lateral supports. After connecting another cross-shaped connector 9.4 to the tension column 9.2, the tow hook is 9.5 Connect to it.

Step 8. Installation of the slide rail device: Install the slide rail 6 and the transport hook 8 in the middle of the bottom of the arch frame 2; the bolt holes above the pad 7 are connected to the arch support, and the bolt holes below are connected to the slide rail 6 for transportation. Both sides of the hook 8 are designed with bearings, which can slide along the groove of the slide rail 6;

Step 9, switch positions; start the traction device, and drive the entire trolley to move to the next station through the traction frame 9 until the construction is completed.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes that come within the meaning and range of equivalents of , are intended to be embraced within the invention, and any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. The utility model provides an assembled platform truck that is used for tunnel shield to construct section of jurisdiction to support which characterized in that: the device comprises a movable chassis (1), a supporting arch frame (2), a hydraulic supporting system (3), a sliding rail (6) and a traction frame (9) from bottom to top;

the movable chassis (1) comprises a left main beam (1.1) and a right main beam (1.1) which are longitudinally arranged in parallel, and the bottom of each main beam (1.1) is provided with a roller group (1.2);

the supporting arch frame (2) comprises a group of arch frames (2.1) arranged at intervals along the extending direction of the main beam (1.1); the arch-shaped frames (2.1) are spanned on the left main beam (1.1) and the right main beam (1.1), and the bottom ends of the supporting legs are fixedly connected with the top panels of the main beams (1.1);

the hydraulic support system (3) comprises a series of hydraulic jacks (3.1) arranged at intervals along the outer surface of the arch frame (2.1), the hydraulic jacks (3.1) are arranged perpendicular to the outer surface of the arch frame (2.1), the bottoms of the hydraulic jacks are fixedly connected with the arch frame (2.1) through mounting seats (3.2), and the tops of the hydraulic jacks are provided with rubber gaskets (3.3) which are contacted with shield segments;

the slide rail (6) is longitudinally and horizontally arranged at the bottom of the arch crown of the supporting arch frame (2) in a penetrating way, is fixedly connected with the arch crown bottom plate of each arch frame (2.1), and connects all the arch frames (2.1) into a whole; a transportation hook (8) is arranged in the track with the downward opening of the slide rail (6);

the traction frame (9) is a horizontal frame beam fixed at one side end part of the movable chassis (1) and is connected with traction equipment to drive the trolley to move.

2. The assembly trolley for tunnel shield segment support according to claim 1, wherein: the mounting base (3.2) comprises a jack base plate (3.21) and a mounting plate, the mounting plate is arranged on the outer side surface of the arch-shaped frame (2.1), and the jack base plate, the mounting plate and the mounting plate are connected through bolts.

3. The assembly trolley for tunnel shield segment support according to claim 2, wherein: the arch-shaped frame (2.1) is door-shaped as a whole and comprises an arch-shaped part (2.11) at the top and vertical parts (2.12) at two sides; the narrowing of the section at the bottom end of the vertical part (2.12) is matched with the width of the flange of the main beam (1.1); correspondingly, the mounting plates comprise a plane mounting plate (3.22) and a curved mounting plate (3.23); the plane mounting plate (3.22) is mounted on the outer side surface of the vertical part (2.12) of the arch frame (2.1), and the bottom surface of the plane mounting plate is a plane; the curved surface mounting plate (3.23) is arranged on the outer side surface of the arched part (2.11) of the arch frame (2.1), and the bottom surface of the curved surface mounting plate is an arc surface with the curvature of the outer side surface of the arched part (2.11) adapted.

4. The assembly trolley for tunnel shield segment support according to claim 1, wherein: the traction frame (9) is a horizontal frame beam and comprises a bending-resistant bottom beam (9.1), a tensile-resistant column (9.2), oblique side beams (9.3), a cross-shaped connecting piece (9.4) and a traction hook (9.5), the bending-resistant bottom beam (9.1) is arranged at the end part of the movable chassis (1), two ends of the bending-resistant bottom beam are respectively fixed with the end parts of the two main beams (1.1) through the cross-shaped connecting piece (9.4), the tensile-resistant column (9.2) is vertically arranged at the middle position of the bending-resistant bottom beam (9.1), two sides of the tensile-resistant column are respectively arranged on one oblique side beam (9.3), the oblique side beams (9.3) and the bending-resistant bottom beam (9.1) form an isosceles triangular frame, and two ends of the oblique side beams are respectively fixedly connected with the bending-resistant; the traction hook (9.5) is a T-shaped plate and comprises an end plate and a hook, and the end plate is fixedly connected with the outer side end of the tensile column (9.2) through a cross-shaped connecting piece (9.4).

5. The fabricated trolley for tunnel shield segment support according to claim 4, wherein: the cross-shaped connecting piece (9.4) is a short steel column assembly with a cross-shaped crossed steel plate at the center, and comprises vertical end plates on two sides and cross-shaped rib plates arranged in the middle, and bolt holes are formed in the vertical end plates.

6. The assembly trolley for tunnel shield segment support according to claim 1, wherein: and a cushion block (7) is arranged between the bottom plate of the slide rail (6) and the arch crown bottom plate of the arch frame (2.1), and the bottom plate, the arch crown bottom plate and the arch crown bottom plate are connected through bolts.

7. The assembly trolley for tunnel shield segment support according to claim 1, wherein: the top of the middle part of the mounting plate (3.22) is a plane along the extension direction of the arch frame (2.1), and a bolt blind hole (4) is arranged on the plane and is connected with a jack base plate (3.21) provided with a bolt through hole (5) through a bolt; the tops of the two side parts are slopes, and the bottom surfaces corresponding to the slope parts are provided with bolt blind holes (4) which are connected with upper flange plate bolts of arch frames (2.1) provided with bolt through holes (5).

8. The assembly trolley for tunnel shield segment support according to claim 5, wherein: the arch-shaped frame (2.1) is an I-shaped steel beam, a stiffening rib (2.2) is arranged between an upper flange plate and a lower flange plate of the arch-shaped frame, end plates (2.3) are arranged at the bottoms of the two supporting legs, and the end plates (2.3) are connected with the main beam (1.1) through bolts; the main beam (1.1) is an I-shaped steel beam, and reinforcing ribs (1.3) are arranged between the upper flange plate and the lower flange plate of the main beam; the bending-resistant bottom beam (9.1), the tensile-resistant column (9.2) and the oblique side beam (9.3) are all I-shaped steel beams with end plates on two sides, and rib plates (9.6) are arranged between upper and lower flange plates.

9. The assembly trolley for tunnel shield segment support according to claim 1, wherein: stiffening ribs (2.2) are correspondingly arranged at the bottoms of the fixedly connected positions of the hydraulic jacks (3.1) and the arch frames (2.1); reinforcing ribs (1.3) are correspondingly arranged at the bottoms of the fixedly connected positions of the arch frames (2.1) and the main beams (1.1); and an arch frame (2.1) is arranged at the top of the roller group (1.2).

10. A construction method of the fabricated trolley for tunnel shield segment support according to any one of claims 1 to 9, comprising the steps of:

the method comprises the following steps: assembling the movable chassis (1): connecting the main beam (1.1) with the pulley block (1.2) through a bolt hole;

step two: the movable chassis (1) is fixedly connected with the arch frame (2): the arch frame (1) is connected with the main beam (1.1) through bolts;

step three: mounting a mounting seat (3.2): connecting the mounting seat (3.2) with the arch frame (2) through bolt holes;

step four: installation of the hydraulic support system (3): connecting the hydraulic jack (3.1) with the mounting seat (3.2) through a bolt;

step five, positioning the trolley: moving the trolley assembled in the fourth step to a specified construction position;

step six, adjusting jacking: adjusting a hydraulic jack (3.1) to tightly push the shield segment, and pressurizing to reach a preset pressure;

step seven, installing a traction device: the traction frame (9) is fixedly connected with the movable chassis (1), and a traction device is connected on a traction hook (9.5) at the end part of the traction frame (9);

step eight, mounting a slide rail device: a sliding rail (6) and a transportation hook (8) are arranged in the middle of the bottom of the arch frame (2);

step nine, switching positions as required; and starting the traction device, and driving the whole trolley to move to the next station through the traction frame (9) until the construction is finished.

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