CN112921718B - Light rail track beam continuous jacking installation device and its use method - Google Patents

Abstract

The invention discloses a light rail track beam continuous lifting installation device and a method for using the same. The upper jacking oil cylinder is fixed upside down on both ends of the slide rail II; the fine adjustment device is installed on the base of the sliding support; the fine adjustment device includes a set of jacks I , a group of jacks II, a group of jacks III, plate I, plate II and plate III; one end of the hydraulic crawler is connected with the fine-tuning device, and the other end is installed on the slider of the slide rail II; the hydraulic pump controls The system includes a main console, a controller and a pump station; the controller is respectively connected with the main console, the hydraulic crawler and the pump station. The invention can reduce high-altitude operations, ensure construction safety, and has the advantages of prefabricated construction and installation, short construction period, suitable for construction and installation of high-voltage line height-limited areas, and installation of prefabricated and assembled track beams in place.

Description

Light rail track beam continuous jacking installation device and its use method

technical field

The invention relates to the technical field of rail transit, in particular to a light rail track beam continuous jacking installation device and a use method thereof.

Background technique

The track beam erection adopts the on-site decentralized construction scheme. The track beam is transported from the beam yard to the erection site by car and hoisted by a truck crane. A steel truss support system is installed at the interface of each hoisting unit for track beam positioning and linear adjustment support. After the three-dimensional alignment adjustment of the track beam is completed, the post-cast steel plate welding and the post-cast concrete pouring are carried out, and finally the auxiliary steel structure of the evacuation platform in the track beam section is installed. The above construction process: installation of steel truss support system - hoisting of track beams - alignment adjustment of track beams - welding of post-cast steel plates - post-cast concrete pouring - installation of auxiliary steel structures for evacuation platforms, it can be seen that there are deficiencies in the existing construction technology: first , decentralized construction and installation, low construction efficiency and long construction period; second, each hoisting unit is equipped with a steel truss beam support system, and the cost is high; third, a large number of high-altitude operations have many construction safety hazards; fourth, a large number of high-altitude Construction work is difficult to control the quality and progress of the project; fifth, the investment in hoisting machinery and equipment and installation equipment is high, and the cost of construction is high; sixth, the construction occupies a large area, which is likely to cause traffic congestion and affect urban traffic; seventh , High-voltage line height limit area, the construction is difficult.

Contents of the invention

The purpose of the present invention is to address the deficiencies in the prior art, and propose a method to reduce the traditional construction procedures such as high-altitude hoisting, high-altitude tying of steel bars, high-altitude erection of supports, and high-altitude pouring of concrete, so as to ensure construction safety to a greater extent and reduce the support of steel truss girders. System use, prefabricated construction and installation, high construction efficiency, short construction period, less investment in hoisting machinery and installation equipment, small construction area, not easy to cause traffic congestion, suitable for construction and installation in areas with high-voltage line height restrictions, prefabricated the ground The assembled track beam is a continuous jacking and installation device for the light rail track beam that is installed in place by jacking and translation.

In order to achieve the above object, the present invention adopts the following technical solutions:

A light rail track beam continuous jacking installation device, including slide rail I, slide rail II, upper jacking oil cylinder, lower jacking oil cylinder, sliding support, fine-tuning device, hydraulic crawler, bearing platform and hydraulic pump control system;

The side of the slide rail II is provided with a chute I matching the slide rail I; the top of the slide rail II is provided with a slide bar;

The upper jacking cylinder is fixed upside down at both ends of the slide rail II;

The sliding support includes a base, and baffles are provided on both sides of the base; the bottom of the base is provided with a chute II that matches the sliding bar;

The fine-tuning device is installed on the base of the sliding support; the fine-tuning device includes a set of jack I, a set of jack II, a set of jack III, plate I, plate II and plate III;

The plate I is provided with two sets of fixing devices; the fixing device includes two L-shaped plates, and the vertical sections of the L-shaped plates are facing each other; the plate I is provided with a bump between the two sets of fixing devices ;

Both the middle part of the plate II and the middle part of the plate III are provided with a hole I, and the size of the hole I is larger than the size of the protrusion; the two ends of the plate II are provided with a straight arm I; the straight arm I is provided with a U-shaped Plate I; the bottom of the U-shaped plate I is provided with a hole II;

Both sides of the plate III are provided with a straight arm II matching the hole II; two ends of the plate III on the same side as the straight arm II are respectively provided with a set of hollow columns; the hollow columns of the two groups are both Connected with U-shaped plate II;

The hole I on the plate II is socketed on the bump of the plate I; the plate III is on the plate II; the hole I on the plate III is socketed on the bump of the plate I; The straight arms II at both ends of the plate III pass through the holes II on both sides of the plate III;

The fixed end of the jack I is fixed on the bump, and the movable end is facing the bottom of the U-shaped plate II; the jack II is located between the hollow columns and its fixed end is fixed on the plate III; the jack III is fixed The end is fixed on the vertical section of the L-shaped plate, and the movable end is facing the side of the U-shaped plate I;

One end of the hydraulic crawler is connected to the fine-tuning device, and the other end is installed on the sliding bar of the slide rail II;

The platform includes a platform; the bottom of the platform is provided with a platform rod matched with the hollow column;

The hydraulic pump control system includes a main console, a controller and a pumping station; the controller is connected to the main console, the hydraulic crawler and the pumping station respectively; the pumping station is connected to jack I, jack II and Jack III is connected.

Further, the two sides of the two ends of the slide rail I are provided with fixing plates, and several holes are arranged on the fixing plates. The fixed plate and slide rail I can be fixed on both sides of the pier by large bolts, which is convenient for disassembly and installation.

Further, the two sides of the U-shaped plate I are provided with a card slot I. The provided card slot makes it difficult to shift and slip when the jack is extended and pushed.

Further, the bottom of the U-shaped plate II is provided with a slot II. The provided card slot makes it difficult to shift and slip when the jack is extended and pushed.

Furthermore, several semicircular grooves are provided on the upper surfaces of the plates I and II; each of the semicircular grooves is equipped with a ball. The balls reduce the friction between the plates, making it easier to slide between the plates.

The working method of the light rail track beam continuous jacking installation device:

1) Fix the slide rail Ⅰ on both sides of the pier through the fixing plate on the slide rail Ⅰ;

2) Put the slide rail II on the bottom of the pier, and the slide groove I is used in conjunction with the slide rail I; there are two sliding supports on the slide rail II, and the slide groove II of the base of the slide support is placed on the slide bar for use together;

3) Insert the cap rods of the caps into the hollow columns, respectively erect the two ends of the two track beams on the cap plates and bases at the two piers, install steel structures between the two track girders and pour concrete , forming a bridge;

4) By starting the upper jacking cylinders at both ends of the slide rail II, the two ends of the slide rail II rise synchronously, rise to the original height of the lower jacking cylinder, stop the upper jacking cylinder, and install the lower jacking cylinder on the bottom of the slide rail II, Remove the upper jacking cylinder to complete the force system conversion;

5) Start the lower jacking cylinder to raise the slide rail Ⅱ to the top of the pier, and control the hydraulic crawler through the controller. When the cylinder of the hydraulic crawler is stretched out, its clamping block clamps the slide bar; when the cylinder of the hydraulic crawler shrinks , the clamp block releases the slide bar and moves in the same direction as the oil cylinder;

6) When the hydraulic crawler moves the bridge to the vicinity of the support on the pier, adjust the main console parameters of the hydraulic pump control system, control the fine-tuning device through the controller of the hydraulic pump control system, start the jack II on the plate III, and pump The station supplies pressure to the jack Ⅱ to move the cap and the bridge vertically;

7) Start the jack I on the bump through the controller of the hydraulic pump control system, the telescopic end of the jack I snaps into the slot II of the U-shaped plate II, the jack I pushes the U-shaped plate II, and the U-shaped plate II drives the plate III in the The ball on the plate II moves laterally, and the straight arm II on both sides of the plate III moves laterally in the hole II of the U-shaped plate I, and the caps and bridges on the hollow column also move laterally;

8) Start the jack III on the vertical section of the L-shaped plate through the controller of the hydraulic pump control system. The telescopic end of the jack III is inserted into the slot Ⅰ on both sides of the U-shaped plate Ⅰ, and the jack III pushes the U-shaped plate Ⅰ. Plate Ⅰ drives plate Ⅱ and plate Ⅲ to move back and forth on the balls of plate Ⅰ, and the caps and bridges on the hollow column of plate Ⅲ also move forward and backward;

9) After adjusting the position of the bridge vertically, horizontally and forward and backward to make it correspond to the support, the jacking cylinder is controlled by the controller to shrink, and the bridge is placed on the support to complete the installation work.

The technical solution of the present invention has the following beneficial effects:

1. In the present invention, slide rail I and slide rail II are used together. Slide rail I can be positioned and guided to ensure that the bridge does not overturn when slide rail II rises.

2. In the present invention, the upper jacking oil cylinder is installed upside down, which is convenient for the slide rail and track beam to work on the ground without installing the oil cylinder first, and then performing the force conversion between the lower jacking oil cylinder and the upper jacking oil cylinder, avoiding the upper jacking oil cylinder If the jacking is too high, the pressure at the bottom end will be too high, resulting in deformation and damage of the oil cylinder, resulting in safety accidents.

3. The present invention utilizes a hydraulic crawler to push the track beam into place on the platform beam, which is convenient for moving and positioning.

4. Use jack Ⅰ, jack Ⅱ and jack Ⅲ to cooperate with the hydraulic pump control system, and perform fine-tuning in different directions through calculation to make the installation position more accurate.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the slide rail II of the present invention.

Fig. 2 is a schematic diagram of the structure of the sliding bearing of the present invention.

Fig. 3 is a structural schematic diagram of the trimming device of the present invention.

Fig. 4 is a schematic diagram of the structure of plate I of the present invention.

Fig. 5 is a schematic diagram of the structure of plate II of the present invention.

Fig. 6 is a schematic diagram of the structure of plate III of the present invention.

Fig. 7 is a structural schematic diagram of the platform of the present invention.

Fig. 8 is a schematic diagram of the initial installation of the method of using the device of the present invention.

Fig. 9 is a schematic diagram of replacing the lower jacking oil cylinder in the method of using the device of the present invention.

Fig. 10 is a schematic diagram of the top of the rising pier of the bridge in the method of using the device of the present invention.

Fig. 11 is a schematic diagram of the installation of the bridge on the support in the method of using the device of the present invention.

Reference signs: 1-sliding rail Ⅰ, 2-sliding rail Ⅱ, 21-sliding groove Ⅰ, 22-sliding bar, 3-upper jacking cylinder, 4-lower jacking cylinder, 5-sliding support, 501-base , 502-baffle plate, 503-chute Ⅱ, 6-fine adjustment device, 601-jack Ⅰ, 602-jack Ⅱ, 603-jack Ⅲ, 604-plate Ⅰ, 6041-L type plate, 6042-bump, 605- Plate II, 6051-U-shaped plate I, 606-plate III, 6061-hollow column, 6062-U-shaped plate II, 7-hydraulic crawler, 8-cap, 9-hydraulic pump control system.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

Example 1:

A light rail track beam continuous jacking installation device, including slide rail I1, slide rail II2, upper jacking cylinder 3, lower jacking cylinder 4, sliding support 5, fine-tuning device 6, hydraulic crawler 7, bearing platform 8 and Hydraulic pump control system 9;

One side of the slide rail II2 is provided with a slide groove I21 matching the slide rail I1; the top of the slide rail II2 is provided with a slide bar 22;

The upper jacking cylinder 3 is fixed upside down at both ends of the slide rail II2;

The sliding support 5 includes a base 501, and both sides of the base 501 are provided with baffles 502; the bottom of the base 501 is provided with a chute II 503 matching the slide bar 22;

The fine-tuning device 6 is installed on the base 501 of the sliding support 5; the fine-tuning device 6 includes a set of jacks I 601, a set of jacks II 602, a set of jacks III 603, plates I 604, plates II 605 and plates III 606;

There are two sets of fixing devices on the plate I604; the fixing devices include two L-shaped plates 6041, and the vertical sections of the L-shaped plates 6041 are facing each other; the plate I604 is provided between the two sets of fixing devices Bump 6042;

Both the middle part of the plate II 605 and the middle part of the plate III 606 are provided with a hole I, and the size of the hole I is larger than the size of the protrusion 6042; the two ends of the plate II 605 are provided with a straight arm I; the straight arm I is provided with a U Type plate I6051; the bottom of the U-shaped plate I6051 is provided with hole II;

The two sides of the plate III 606 are provided with a straight arm II matching the hole II; the two ends of the plate III 606 on the same side as the straight arm II are respectively provided with a set of hollow columns 6061; the two sets of hollow columns 6061 are connected with U-shaped plate Ⅱ 6062;

The hole I on the plate II 605 is socketed on the bump 6042 of the plate I 604; the plate III is on the 606 plate II 605; the hole I on the plate III 606 is socketed on the bump 6042 of the plate I 604 ; The straight arms II at both ends of the plate III 606 pass through the holes II on both sides of the plate III 606;

The fixed end of the jack I 601 is fixed on the bump 6042, and the movable end is facing the bottom of the U-shaped plate II 6062; the jack II 602 is located between the hollow columns 6061 and its fixed end is fixed on the plate III 606; the jack The fixed end of Ⅲ603 is fixed on the vertical section of L-shaped plate 6041, and the movable end is facing the side of U-shaped plate Ⅰ6051;

One end of the hydraulic crawler 7 is connected to the fine-tuning device 6, and the other end is installed on the slide bar 22 of the slide rail II2;

The platform 8 includes a platform plate 801 ; a platform rod 802 is provided at the bottom of the platform plate ( 801 ) to match with the hollow column 6061 .

The hydraulic pump control system 9 includes a main console, a controller and a pumping station; the controller is connected to the main console, the hydraulic crawler 7 and the pumping station respectively; the pumping station is connected to the jack I601, the jack II602 is connected with jack III603.

Example 2:

The only difference between this embodiment and Embodiment 1 is that the two sides of the two ends of the slide rail I1 are provided with a fixed plate, and the fixed plate is provided with several holes; the bolts pass through the holes to fix the fixed plate and the slide rail I1 on the Both sides of the pier.

Example 3:

The only difference between this embodiment and the second embodiment is that the two sides of the U-shaped plate I 6051 are provided with slots I; when the telescopic end of the jack III 603 is extended, it is inserted into the slot I at the U-shaped plate I 6051.

Example 4:

The only difference between this embodiment and Embodiment 3 is that the bottom of the U-shaped plate II 6062 is provided with a slot II;

Example 5:

The only difference between this embodiment and Embodiment 4 is that several semicircular grooves are provided on the top of the plate I604 and plate II605; a ball is matched in the semicircular groove; plate I604, plate II605 and plate III606 When relative sliding occurs between the balls, the rolling of the balls reduces the frictional resistance.

The method of using the light rail track beam continuous jacking installation device of the above embodiment:

Initial installation: fix the slide rail Ⅰ1 on both sides of the pier; place the slide rail Ⅱ2 at the bottom of the pier, and use the chute Ⅰ21 with the slide rail Ⅰ1; there are two sliding supports 5 on the slide rail Ⅱ2, and place the sliding support 5 The chute II 503 of the base 501 is placed on the slide bar 22 for use together;

Bridge pouring and forming: insert the cap rod 802 of the cap 8 into the hollow column 6061, put the two ends of the two track beams on the cap plate 801 and the base 501 at the two bridge piers respectively, and place them between the two track beams. Install steel structures and pour concrete between them to form bridges;

Replace the lower jacking cylinder: start the upper jacking cylinder 3 at both ends of the slide rail Ⅱ2, so that both ends of the slide rail Ⅱ2 rise synchronously, rise to the original height of the lower jacking cylinder 4, stop the upper jacking cylinder 3, and put the lower jacking cylinder 4 Installed at the bottom of the slide rail Ⅱ2, remove the upper jacking cylinder 3 to complete the force system conversion;

Lifting the top of the pier of the bridge: start the lower jacking cylinder 4 to raise the slide rail Ⅱ2 to the top of the pier, and control the hydraulic crawler 7 through the controller. When the oil cylinder of the crawler 7 shrinks, its clamp block releases the slide bar and moves in the same direction as the oil cylinder;

Bridge positioning: when the hydraulic crawler 7 moves the bridge to the vicinity of the support on the pier, adjust the parameters of the main console of the hydraulic pump control system 9, control the fine-tuning device 6 through the controller of the hydraulic pump control system 9, and start the board III 606 Jack II 602, the controller controls the pumping station to deliver pressure to the jack II 602, moves the cap 8 and the bridge vertically, and starts the jack I 601 on the bump 6042 through the controller of the hydraulic pump control system 9, and pushes U when the jack I 601 is extended. The plate II 6062 and the U-shaped plate II 6062 drive the plate III 606 to move laterally on the plate II 605, and the straight arms II on both sides of the plate III 606 move laterally in the hole II of the U-shaped plate I 6051, so the cap 8 and the bridge on the hollow column 6061 also Then move laterally; start the jack III 603 on the vertical section of the L-shaped plate 6041 through the controller of the hydraulic pump control system 9, and push the U-shaped plate I 6051 when the jack III 603 extends, and the U-shaped plate I 6051 drives the plate II 605 and the plate III 606 on the plate If I604 moves back and forth, the cap 8 and the bridge on the hollow column 6061 of plate III606 also move back and forth;

The bridge is installed on the support: through the calculation of the hydraulic pump control system, adjust the vertical, horizontal and front and rear positions of the bridge to correspond to the support, and then the jacking cylinder 4 is controlled by the controller to shrink, and the bridge is lowered and placed on the support. Installation works.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the spirit and protection scope of the present invention, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the present invention.

Claims (4)

1. The utility model provides a continuous jacking installation device of light rail track roof beam which characterized in that: the hydraulic climbing device comprises a sliding rail I (1), a sliding rail II (2), an upper jacking oil cylinder (3), a lower jacking oil cylinder (4), a sliding support (5), a fine adjustment device (6), a hydraulic crawler (7), a bearing platform (8) and a hydraulic pump control system (9);

one side of the sliding rail II (2) is provided with a sliding chute I (21) matched with the sliding rail I (1); the top of the sliding rail II (2) is provided with a sliding strip (22);

the lifting oil cylinder (3) is fixed at two ends of the sliding rail II (2) in an inverted manner;

the sliding support (5) comprises a base (501), and baffles (502) are arranged on two sides of the base (501); the bottom of the base (501) is provided with a sliding groove II (503) matched with the sliding strip (22);

the fine adjustment device (6) is arranged on a base (501) of the sliding support (5); the fine adjustment device (6) comprises a group of jacks I (601), a group of jacks II (602), a group of jacks III (603), a plate I (604), a plate II (605) and a plate III (606);

two groups of fixing devices are arranged on the plate I (604); the fixing device comprises two L-shaped plates (6041), and the vertical sections of the L-shaped plates (6041) are opposite; a convex block (6042) is arranged between the two groups of fixing devices on the plate I (604);

the middle part of the plate II (605) and the middle part of the plate III (606) are both provided with a hole I, and the size of the hole I is larger than that of the bump (6042); two ends of the plate II (605) are provided with straight arms I; the straight arm I is provided with a U-shaped plate I (6051); the bottom of the U-shaped plate I (6051) is provided with a hole II;

two sides of the plate III (606) are provided with straight arms II matched with the holes II; two ends of the plate III (606) on the same side as the straight arm II are respectively provided with a group of hollow columns (6061); the two groups of hollow columns (6061) are connected with a U-shaped plate II (6062);

the hole I on the plate II (605) is sleeved on a convex block (6042) of the plate I (604); the plate III (606) is arranged on the plate II (605); the hole I on the plate III (606) is sleeved on a convex block (6042) of the plate I (604); the straight arms II at the two ends of the plate III (606) penetrate through the holes II at the two sides of the plate III (606);

the fixed end of the jack I (601) is fixedly connected to the bump (6042), and the movable end of the jack I is opposite to the bottom of the U-shaped plate II (6062); the jack II (602) is positioned between the hollow columns (6061) and the fixed end of the jack II is fixed on the plate III (606); the fixed end of the jack III (603) is fixed on the vertical section of the L-shaped plate (6041), and the movable end of the jack III (603) is over against the side part of the U-shaped plate I (6051);

one end of the hydraulic crawler (7) is connected with the fine adjustment device (6), and the other end of the hydraulic crawler is installed on a sliding strip (22) of the sliding rail II (2);

the bearing platform (8) comprises a bearing platform plate (801); the bottom of the bearing plate (801) is provided with a bearing plate rod (802) which is matched and sleeved with the hollow column (6061);

the hydraulic pump control system (9) comprises a main control platform, a controller and a pump station; the controller is respectively connected with the main control console, the hydraulic crawler (7) and the pump station; the pump station is respectively connected with the jack I (601), the jack II (602) and the jack III (603),

two sides of two ends of the sliding rail I (1) are provided with fixing plates which are provided with a plurality of holes,

and clamping grooves I are formed in two sides of the U-shaped plate I (6051).

2. The continuous jacking and installing device of the light rail track beam as claimed in claim 1, characterized in that: and a clamping groove II is formed in the bottom of the U-shaped plate II (6062).

3. The continuous jacking and installing device of the light rail track beam as claimed in claim 1, characterized in that: a plurality of semicircular grooves are formed in the plate I (604) and the plate II (605); and one ball is matched in each semicircular groove.

4. Use of the continuous jacking installation device of a light rail track beam according to any one of claims 1 to 3, characterized in that it comprises the following steps:

1) The slide rails I (1) are fixed on two sides of the bridge pier through fixing plates on the slide rails I (1);

2) The sliding rail II (2) is arranged at the bottom of the pier, and the sliding groove I (21) is matched with the sliding rail I (1) for use; two sliding supports (5) are arranged on the sliding rail II (2), and a sliding groove II (503) of a base (501) of each sliding support (5) is arranged on the sliding strip (22) to be matched for use;

3) Sleeving a bearing platform rod (802) of a bearing platform (8) into a hollow column (6061), respectively erecting two ends of two track beams on a bearing platform plate (801) and a base (501) of two piers, installing a steel structure between the two track beams and pouring concrete to form a bridge;

4) The two ends of the sliding rail II (2) are synchronously lifted by starting the upper jacking oil cylinders (3) at the two ends of the sliding rail II (2), the upper jacking oil cylinders (3) are stopped when the two ends of the sliding rail II (2) are lifted to the original height of the lower jacking oil cylinder (4), the lower jacking oil cylinder (4) is installed at the bottom of the sliding rail II (2), and the upper jacking oil cylinders (3) are removed to finish the force system conversion;

5) Starting a lower jacking oil cylinder (4) to lift the sliding rail II (2) to the top of the pier, controlling a hydraulic crawler (7) through a controller, and clamping the sliding strip by a clamping block of the hydraulic crawler (7) when the oil cylinder of the hydraulic crawler (7) extends out; when an oil cylinder of the hydraulic crawler (7) contracts, the clamping block loosens the slide bar and moves in the same direction as the oil cylinder;

6) When the hydraulic crawler (7) moves the bridge to the position near the support on the pier, the parameters of a main control platform of a hydraulic pump control system (9) are adjusted, a controller of the hydraulic pump control system (9) controls a fine adjustment device (6), a jack II (602) on a plate III (606) is started, a pump station transmits pressure to the jack II (602), and a bearing platform (8) and the bridge are moved vertically;

7) Starting a jack I (601) on a convex block (6042) through a controller of a hydraulic pump control system (9), clamping a telescopic end of the jack I (601) into a clamping groove II of a U-shaped plate II (6062), pushing the U-shaped plate II (6062) by the jack I (601), driving a plate III (606) to transversely move on a ball of the plate II (605) by the U-shaped plate II (6062), transversely moving straight arms II on two sides of the plate III (606) in a hole II of the U-shaped plate I (6051), and then transversely moving a bearing platform (8) on a hollow column (6061) and a bridge;

8) Starting a jack III (603) on a vertical section of an L-shaped plate (6041) through a controller of a hydraulic pump control system (9), clamping a telescopic end of the jack III (603) into a clamping groove I on two sides of a U-shaped plate I (6051), pushing the U-shaped plate I (6051) by the jack III (603), driving a plate II (605) and a plate III (606) to move back and forth on a ball of the plate I (604) by the U-shaped plate I (6051), and then moving a bearing platform (8) on a hollow column (6061) of the plate III (606) and a bridge back and forth along with the plate II (605) and the plate III (606);

9) Through the calculation of a hydraulic pump control system, after the vertical position, the horizontal position and the front and back position of the bridge are adjusted to enable the bridge to correspond to the support, the jacking oil cylinder (4) is controlled by the controller to contract, and the bridge descends and is arranged on the support to complete the installation work.

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