CN117144801A - Construction device and method for installing plate girder in sliding manner on track under height limiting environment - Google Patents

Abstract

The invention discloses a construction device and a construction method for installing a plate girder in a sliding way of a track in a height-limited environment, wherein the construction device comprises a track trolley, a plurality of section tracks and a lifting device which are spliced in sequence; the plurality of section tracks which are spliced in sequence are a long section track group and a short section track group, the long section track group is a plurality of long section tracks which are spliced in sequence, the short section track group is a plurality of short section tracks which are spliced in sequence, and the last long section track in the long section track group is spliced with the first short section track in the short section track group; the length of the long section track is N times of that of the short section track, and N is a positive integer; the length of the short section track is consistent with the bottom width of the plate girder. The advantages are that: the girder is put in place by utilizing the spliced sectional track and the track trolley and the movable plate girder and utilizing the lifting device, so that the girder can be erected in a limited height space, mechanical operations such as a bridge girder erection machine and the like are avoided, and the construction cost is saved; the device can also work in dangerous areas such as high-voltage lines and the like where a crane and large equipment cannot work, and the safety risk is reduced.

Description

A construction device and method for track sliding installation of plate beams in a height-restricted environment

Technical field

The invention relates to a construction device and method for track sliding installation of plate beams in a height-limited environment, and belongs to the technical field of plate beam installation and construction.

Background technique

When installing and constructing urban bridge plate girders, sometimes due to height restrictions such as high-voltage lines above and existing bridges, it is difficult to use truck cranes for construction. Choosing construction machinery such as bridge erecting machines or gantry cranes is often more costly and difficult to construct.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the existing technology and provide a construction device and method for track sliding installation of plate beams in a height-restricted environment.

In order to solve the above technical problems, the present invention provides a construction device for track sliding installation of plate beams in a height-restricted environment, including: a track trolley, several segmented tracks that are spliced in sequence, and a lifting device;

The track trolley is placed on the segmented track and can move on the segmented track;

Plate beams are placed on the rail trolley;

The lifting device is used to lift the plate beam on the track trolley, and after lifting the plate beam, the height of the plate beam is lower than the height limit of the height-limited environment;

The plurality of segmented rails spliced in sequence are a long segmented rail group and a short segmented rail group. The long segmented rail group is a plurality of long segmented rails spliced in sequence. The short segmented rail group is a plurality of long segmented rails spliced in sequence. short segmented tracks that are spliced in sequence, the last long segmented track in the long segmented track group is spliced with the first short segmented track in the short segmented track group; the length of the long segmented track is the length of the short segmented track N times the length, N is a positive integer; the length of the short segmented track is consistent with the bottom width of the plate girder.

Further, each of the segmented rails is connected through rail connecting splints.

Further, the length of the segmented track is the sum of the length of the segmented track itself and the length of the rail connecting splints on both sides.

Furthermore, wooden boots for leveling are provided under the segmented track.

Further, when the plate beam is lifted and placed on the track trolley, first wooden wedges for fixing the trolley are provided at the front and rear wheels of the track trolley; after the plate beam is lifted and placed on the track trolley, the plate beam and the track trolley are A second wooden wedge is placed between them for fixing the plate beams.

Further, after the plate beam is lifted and placed on the rail trolley, the plate beam and the rail trolley are fixed by a wire rope tie.

Further, the lifting device adopts a jack.

A construction method for track sliding installation of plate beams in a height-restricted environment, including:

Tracks are laid sequentially along the direction of the cover beam, and the tracks include several segmented tracks that are spliced in sequence;

Install the track trolley on the track outside the restricted space of the cover beam;

Lift the plate beam and place it on the track trolley;

Move the track trolley on the track to the designated position within the restricted space of the cover beam;

Use a jack to lift the plate beam from the top of the track trolley, remove the trolley, remove the segmented track below the plate beam, release the jack lifting action, lower the plate beam to the designated position, and drop the beam into place;

Repeat the drop beam placement until all plate beams within the restricted space of the cover beam are in place.

Further, the hoist inverted chain is used to slide the rail car carrying the plate beam laterally along the direction of the cover beam to a designated position in the restricted space.

Further, the designated positions are selected from far to near along the direction of the cover beam, and each time a plate beam is installed, the corresponding segmented track is removed.

Beneficial effects achieved by the present invention:

The present invention uses spliced segmented rails and track trolleys to move the plate beams into place, and then uses jacks to lower the beams into place. This invention can erect beams in a limited height space, avoid mechanical operations such as bridge erecting machines, and save construction costs; it can also be used in Work in dangerous areas such as high-voltage lines where cranes and large equipment cannot operate to reduce safety risks.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the track sliding installation plate beam of the present invention;

Figure 2 is a schematic diagram of the rail car and plate beam combination of the present invention;

Figure 3 is a schematic diagram of the ultra-thin hydraulic jack lifting plate beam assembly of the present invention;

Figure 4 is a schematic diagram of the ultra-thin hydraulic jack of the present invention.

In the picture, 1. Long segmented track, 2. Short segmented track, 3. Rail connecting plywood, 4. Wooden boots, 5. Track trolley, 6. Plate beam, 7. First wooden wedge, 8. Second wooden wedge , 9. Wire rope, 10. Steel plate, 11. Jack, 12. Bearing, 13. Padstone, 14. Bridge pier, 15. Segmented track 15.

Implementation

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, but cannot be used to limit the scope of the present invention.

Embodiment 1, as shown in Figures 1 and 2, the present invention discloses a construction device for track sliding installation of plate beams in a height-restricted environment, including: a track trolley 5, several segmented tracks 15 that are spliced in sequence, and a jack;

The track trolley 5 is placed on the segmented track and can move on the segmented track;

Plate beams 6 are placed on the rail car 5;

The jack is used to lift the plate beam 6 on the rail car 5, and after lifting the plate beam 6, the height of the plate beam 6 is lower than the height limit of the height-limited environment;

The plurality of segmented rails spliced in sequence are a long segmented rail group and a short segmented rail group. The long segmented rail group is a plurality of long segmented rails 1 spliced in sequence. The short segmented rail group is Several short segmented rails 2 are spliced in sequence, and the last long segmented rail 1 in the long segmented rail group is spliced with the first short segmented rail 2 of the short segmented rail group; the length of the long segmented track 1 is N times the length of the short segmented track 2, N is a positive integer; the length of the short segmented track 2 is consistent with the bottom width of the plate beam 6.

Each of the segmented rails is connected by a rail connecting splint 3 .

The length of the segmented track is the sum of the length of the segmented track itself and the length of the rail connecting splints 3 on both sides.

Wooden boots 4 for leveling are provided below the segmented track.

When the plate beam 6 is hoisted and placed on the track trolley 5, first wooden wedges 7 for fixing the trolley are provided at the front and rear wheels of the track trolley 5.

After the plate beam 6 is lifted and placed on the rail car 5 , a second wooden wedge 8 for fixing the plate beam 6 is provided between the plate beam 6 and the rail car 5 .

After the plate beam 6 is hoisted and placed on the rail car 5 , the plate beam 6 and the rail car 5 are tied and fixed by a wire rope 9 .

Embodiment 2, the present invention provides a construction method for track sliding installation of plate beams in a height-restricted environment, including:

1. Lay segmented tracks separately along the direction of the cap beam. Each track is connected by a rail connecting splint 3. The track is placed on the padding stone 13 of the same span cap beam and is leveled with wooden boots 4. The padding stone 13 is located on the pier.

2. Install the track trolley 5 at the corresponding position of the track outside the restricted space of the cover beam. The front and rear wheels of the track trolley 5 are fixed with the first wooden wedge 7.

3. After the track trolley 5 is installed, the plate beam 6 is lifted from the outside of the cast-in-place beam projection surface and both ends are placed on the track trolley 5. Two hoist inverted chains are used to slide the plate beam 6 laterally along the cover beam direction. The plate beam 6 is placed behind the track car 5 and fixed with a steel wire rope 9. Steel plates 10 are provided at both ends of the track car for blocking. A second wooden wedge 8 is used between the plate beam 6 and the steel plate 10 to further support the plate beam 6. Fix it to ensure that the plate beam 6 does not shift during movement.

4. After the slide is in place and the fixation is released, use the jack 11 to lift the plate beam 6 from above the track trolley, remove the track trolley 5, remove the segmented track below the plate beam 6, and put the falling beam in place. In this embodiment As shown in Figures 3 and 4, the jack 11 is an ultra-thin hydraulic jack, the lower end of which is placed on the bridge pier, and the upper end is used to lift the plate beam 6.

5. In this embodiment, the track is assembled using three 1-meter short segmented rails 2 and two 3-meter long segmented rails 1. The three 1-meter short segmented rails 2 are placed in the restricted space of the cover beam. In the farthest section, after each plate beam 6 is erected at the farthest end, a corresponding 1-meter short segmented track 2 is dismantled. After three plate beams 6 are erected, three 1-meter short segmented track 2 is dismantled. When erecting the fourth piece, remove one 3-meter long segmented track 1 and install three 1-meter short segmented tracks 2. Repeat the previous operation and remove one short segmented track 2 for each piece installed. When erecting the seventh beam, dismantle the second 3-meter long segmented track 1 and repeat the previous operation. Remove one short segmented track 2 for each piece installed until all plate beams 6 in the restricted space of the cover beam are covered. The installation is completed; through the combination of the short segmented track 2 and the long segmented track 1, the plate beam 6 can be installed quickly and accurately with a limited number of segmented tracks.

The above are only preferred embodiments of the present invention. It should be noted that those of ordinary skill in the art can also make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (10)

1. A construction device for track sliding installation of plate beams in a height-restricted environment, which is characterized in that it includes: a track trolley, several segmented tracks that are spliced in sequence, and a lifting device; The track trolley is placed on the segmented track and can move on the segmented track; Plate beams are placed on the rail trolley; The lifting device is used to lift the plate beam on the track trolley, and after lifting the plate beam, the height of the plate beam is lower than the height limit of the height-limited environment; The plurality of segmented rails spliced in sequence are a long segmented rail group and a short segmented rail group. The long segmented rail group is a plurality of long segmented rails spliced in sequence. The short segmented rail group is a plurality of long segmented rails spliced in sequence. short segmented tracks that are spliced in sequence, the last long segmented track in the long segmented track group is spliced with the first short segmented track in the short segmented track group; the length of the long segmented track is the length of the short segmented track N times the length, N is a positive integer; the length of the short segmented track is consistent with the bottom width of the plate girder. 2. The construction device for track sliding installation of plate beams in a height-restricted environment according to claim 1, characterized in that each of the segmented tracks is connected by a rail connecting splint. 3. The construction device for track sliding installation of plate beams in a height-limited environment according to claim 2, characterized in that the length of the segmented track is the length of the segmented track itself and the length of the rail connecting splints on both sides of the track. Sum. 4. The construction device for track sliding installation of plate beams in a height-restricted environment according to claim 1, characterized in that wooden boots for flattening are provided below the segmented track. 5. The construction device for track sliding installation of plate beams in a height-restricted environment according to claim 1, characterized in that: When lifting the plate beam and placing it on the track trolley, first wooden wedges for fixing the trolley are provided at the front and rear wheels of the track trolley; After the plate beam is lifted and placed on the rail trolley, a second wooden wedge for fixing the plate beam is set between the plate beam and the rail trolley. 6. The construction device for track sliding installation of plate beams in a height-restricted environment according to claim 1, characterized in that after the plate beams are hoisted and placed on the track trolley, a steel wire rope is passed between the plate beam and the track trolley. Fastened with tie. 7. The construction device for track sliding installation of plate beams in a height-restricted environment according to claim 1, characterized in that the lifting device adopts a jack. 8. A construction method for track sliding installation of plate beams in a height-restricted environment, which is characterized by including: Tracks are laid sequentially along the direction of the cover beam, and the tracks include several segmented tracks that are spliced in sequence; Install the track trolley on the track outside the restricted space of the cover beam; Lift the plate beam and place it on the track trolley; Move the track trolley on the track to the designated position within the restricted space of the cover beam; Use a jack to lift the plate beam from the top of the track trolley, remove the trolley, remove the segmented track below the plate beam, release the jack lifting action, lower the plate beam to the designated position, and drop the beam into place; Repeat the drop beam placement until all plate beams within the restricted space of the cover beam are in place. 9. The construction method for track sliding installation of plate beams in a height-restricted environment according to claim 8, characterized in that a hoist inverted chain is used to slide the track trolley carrying the plate beam laterally into the restricted space along the direction of the cover beam. Specify location. 10. The construction method for track sliding installation of plate beams in a height-restricted environment according to claim 8, characterized in that the designated positions are selected from far to near in the direction of the cover beam, and each plate beam is installed and removed. The corresponding segmented track.