CN106638327A - Electric self-lifting beam transporting trolley for erecting suspension bridge girder - Google Patents

Abstract

The invention discloses an electric self-elevating girder transport trolley for erecting the main girder of a suspension bridge, which belongs to the technical field of bridge erecting equipment. The beam transport trolley is composed of two symmetrically arranged trolley assemblies, the distribution beams of the two symmetrically arranged trolley assemblies are connected by a first pin shaft, and the first pin shaft is connected to the beam segment; each of the The trolley assembly includes a distribution beam and a pulley mechanism. The pulley mechanism is arranged on both ends of the distribution beam. The track rollers of the pulley mechanism are located above the distribution beam and on the same level. The pulley mechanism is connected to the track cable ; The pulley mechanism is also provided with a worm gear screw lifter and an electric control box connected with the worm gear screw lifter. The present invention can not only realize horizontal transportation, but also realize vertical lifting of beam segments, and is designed as a two-half structure that can be easily and quickly separated and connected. segment of the boom interferes.

Description

An electric self-elevating girder trolley for erecting the main girder of a suspension bridge

technical field

The invention relates to the technical field of bridge erection equipment, in particular to an electric self-elevating girder transport trolley used for erecting the main girder of a suspension bridge.

Background technique

The main girder of the long-span suspension bridge is processed into segments by the factory or on the shore, and then segmentally assembled. Generally, the segment is transported to the position to be hoisted by means of water transportation (shipping), and then the construction is carried out by using the cable-loaded crane to move vertically or at a small angle. The current cable-mounted crane can only be positioned and hoisted on the main cable of the suspension bridge, but cannot lift the beam section and walk with the beam section, that is, it can only lift the height and cannot move in the horizontal plane.

When the canyon suspension bridge has no water transport conditions and cannot be transported by water, the Hunan Aizhai Bridge proposes to use the rail cable sliding method to erect the beam segment, and use the cable crane to lift vertically. The beam transport trolley of the rail cable sliding method has high cost because it only has the function of horizontal beam transport and does not integrate the vertical lifting function.

The traditional beam transport trolley only realizes the horizontal transportation. When the vertical lifting beam section is connected with the sling, the height is raised by an additional cable crane and other equipment, and then the lugs of the slings are connected with the lugs of the main beam. The beam transport trolley adopts an integral structure. After the sling is connected to the main beam, the beam transport trolley will be located in the middle of the two slings, and the influence of the sling can no longer be eliminated, and then it will return to the shore to transport the beam.

Contents of the invention

In view of the above problems, the object of the present invention is to provide an electric self-elevating beam transport trolley for the erection of the main girder of a suspension bridge. It is a two-half structure that is easy to quickly separate and connect. The two halves can be towed independently. After the beam section is installed in place, the trolley withdraws from the position of the installed beam section to avoid the interference of the installed boom.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An electric self-elevating girder transport trolley for erecting the main girder of a suspension bridge. The beam transport trolley slides on the rail cables using the rail cable sliding method to transport beam segments. The beam transport trolley consists of two symmetrically arranged Composed of trolley assemblies, the distribution beams of the two symmetrically arranged trolley assemblies are connected by a first pin shaft, and the first pin shaft is connected with the beam segment; each of the trolley assemblies includes a distribution beam and a pulley mechanism , the pulley mechanism is located on both ends of the distribution beam, the track rollers of the pulley mechanism are located above the distribution beam and on the same level, and the pulley mechanism is connected to the track cable; The pulley mechanism is also provided with a worm gear screw elevator and an electric control box connected with the worm gear screw elevator.

Further, each of the pulley mechanisms includes a pulley block and a load bearing block, the pulley set is located above the distribution beam, and the pulley set is connected to the load bearing block through a second pin shaft, and the load bearing block is connected to the load bearing block The distribution beams are connected, and the electric control box is arranged on the suspension block. The invention utilizes the cable bearing block to support the pulley block, improves the stability of the pulley block, and improves the stability of horizontal transportation when the beam transport trolley horizontally transports the beam.

Further, there are two sets of pulleys on each pulley mechanism, and the two sets of pulleys are connected to the cable-bearing blocks through the second pin shaft. Setting the pulley blocks into two groups increases the contact points between the track rollers and the track cables in the pulley block and improves the horizontal transport speed of the beam transport trolley.

Further, the pulley set includes two sets of track rollers, connecting plates and positioning rope rollers located between the two sets of track rollers, the two sets of track rollers are located above the distribution beam and pass through the The connecting plate is connected with the cable bearing block, the connecting plate is arranged on the side of the two sets of track rollers for connecting the two sets of track rollers, and the positioning rope rollers are passed through the second pin Above, the second pin shaft passes through the connecting plate and is connected with the cable bearing block. This structure of the pulley block of the present invention ensures the stability of the track rollers, thereby improving the stability of horizontal transportation.

Further, the sling block includes a support part connected to the distribution beam and two symmetrically arranged connecting parts located above the support part and connected to the support part, and the two symmetrically arranged connecting parts respectively pass through The second pin shaft is connected to the corresponding pulley block, and the worm gear screw lifter is arranged between the two symmetrically arranged connecting parts. The worm gear screw lifter is arranged between the two connecting parts, not only the structure is reasonable, but also the height of the distribution beam can be directly and vertically raised by the present invention after the horizontal transportation is in place, and then the beam section can be lifted, and the horizontal transportation and the vertical transportation can be simultaneously provided. Lifting effect.

Further, each set of the track rollers includes two track rollers, and the two track rollers are both threaded on the third pin shaft and connected to the connecting plate through the third pin shaft, and the Both track rollers are connected to the track. In the present invention, by arranging a plurality of rail cable rollers in contact with the rail cables, the horizontal transportation of the beam transport trolley of the present invention is more stable and the transportation speed is improved.

Further, the outer surface of the connecting plate is also provided with a rope-preventing side plate, and the side plate is connected to the connecting plate through a third pin shaft. By setting the anti-loosening side plate, during the transportation process of the beam transport trolley on the rail cable, it can prevent the misalignment of the rail cable and the detachment from the rail cable rollers on the beam transport trolley, so as to ensure the normal progress of horizontal transportation.

Further, the distribution beam is a rectangular distribution beam, and the rectangular distribution beam is connected to the cable bearing block of the pulley mechanism through the screw in the worm gear screw elevator. The rectangle is easy to design and has a reasonable structure, which reduces the design cost.

Further, a tray for placing the electric control box is also installed on the side of the sling block, so that the electric control box can be more stably arranged on the sling block.

In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

The invention can not only realize horizontal transportation, but also vertically elevate the beam segment through the worm gear screw lifter, so that after the beam segment is horizontally transported in place, it can be lifted vertically at the same time, so that the lug of the sling is connected with the lug of the main beam. The invention relates to self-lifting, which no longer needs the cooperation of a cable-loaded crane, greatly reduces the interference of steel wire ropes, and reduces the operating cost of beam segment lifting. Moreover, the self-elevating beam transport trolley of the present invention is designed as two halves that are easy to quickly separate and connect. The two halves can be independently towed. The interference of the boom between the two halves of the trolley.

Description of drawings

Fig. 1 is a structural schematic diagram of an electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to an embodiment of the present invention;

Fig. 2 is a left view of an electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to an embodiment of the present invention;

Fig. 3 is a top view of an electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to an embodiment of the present invention;

Fig. 4 is a side view of a trolley assembly in an electric self-elevating beam transport trolley for erecting the main girder of a suspension bridge according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of an electric self-elevating girder transporting trolley used for erecting the main girder of a suspension bridge according to an embodiment of the present invention when transporting the girder.

In the figure, 1- distribution beam, 2- pulley mechanism, 3- first pin, 4- beam segment, 5- boom, 6- electric control box, 7- second pin, 8- third pin , 9-anti-off rope side plate, 10-worm gear screw lift, 11-pallet, 12-track cable;

21-pulley block, 22-cable block, 211-track roller, 212-connecting plate, 213-positioning rope roller, 221-supporting part, 222-connecting part.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or there may be an intervening component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example

As shown in Figures 1 to 5, an electric self-elevating girder transport trolley is used for erecting the main girder of a suspension bridge. The beam transport trolley slides on the rail cables 12 using the rail cable sliding method to transport the beam segment 4. The beam transport trolley is composed of two symmetrically arranged trolley assemblies, the distribution beams 1 of the two symmetrically arranged trolley assemblies are connected by a first pin shaft 3, and the first pin shaft 3 is connected to the beam segment 4 connect. In this embodiment, the distribution beam 1 is a rectangular distribution beam, and the rectangular distribution beam is connected to the cable-bearing block 22 of the pulley mechanism 2 through the screw in the worm-wheel-screw lifter 10 .

Each trolley assembly includes a distribution beam 1 and a pulley mechanism 2, the pulley mechanism 2 is arranged on both ends of the distribution beam 1, and the track rollers 211 of the pulley mechanism 2 are located on the distribution beam 1 Above and on the same horizontal plane, the pulley mechanism 2 is connected to the rail cable 12; the pulley mechanism 2 is also provided with a worm screw lifter 10 and an electric control box 6 connected with the worm screw lifter 10. In the example, the electric control box 6 is equipped with a wireless controller, and the lifting of the worm screw elevator 10 is controlled by the wireless controller.

Each of the pulley mechanisms 2 includes a pulley block 21 and a bearing block 22, the pulley block 21 is located above the distribution beam 1, and the pulley block 21 is connected to the bearing block 22 through a second pin shaft 7, so The cable-bearing block 22 is connected to the distribution beam 1, and the electric control box 6 is arranged on the cable-bearing block 22. In this embodiment, the pulley blocks 21 on each pulley mechanism 2 are two groups, and the two groups of pulley blocks 21 are connected to the cable bearing blocks 22 through the second pin shaft 7 . A tray 11 is also installed on the side of the rigging block 22 , and the tray 11 is used to place the electric control box 6 .

Wherein the pulley block 21 comprises two groups of track rollers 211, connecting plates 212 and positioning rope rollers 213 between the two groups of track rollers 211, and the two groups of track rollers 211 are all located above the distribution beam 1 and The connecting plate 212 is connected to the cable-bearing block 22, and the connecting plate 212 is arranged on the sides of the two sets of track rollers 211 for connecting the two sets of track rollers 211. The positioning rope rollers 213 The second pin shaft 7 is passed through the saddle for positioning the supporting rail 12 , and the second pin shaft 7 passes through the connecting plate 212 to connect with the cable bearing block 22 . The outer surface of the connection plate 212 is also provided with a rope-off prevention side plate 9 , and the rope-off prevention side plate 9 is connected to the connection plate 212 through a third pin 8 . Each set of the track rollers 211 includes two track rollers 211, and the two track rollers 211 are passed through the third pin shaft 8 and connected to the connecting plate 212 through the third pin shaft 8, And the two track rollers 211 are connected with the track 12 .

Wherein the bearing block 22 comprises a supporting part 221 connected with the distribution beam 1 and two symmetrically arranged connecting parts 222 located above the supporting part 221 and connected with the supporting part 221, the two symmetrically arranged connecting parts 222 are respectively connected to the corresponding pulley block 21 through the second pin shaft 7 , and the worm gear screw lifter 10 is arranged between the two symmetrically arranged connecting parts 222 .

The electric self-elevating beam transport trolley of the present invention can not only realize horizontal transportation through the pulley mechanism 2, but also vertically lift the beam segment 4 through the worm gear screw elevator 10, so that after the beam segment 4 is horizontally transported in place, it can be lifted vertically at the same time, so that The lugs of the boom 5 are connected to the lugs of the beam segment 4 . The present invention is designed to self-elevate without the cooperation of a cable-loaded crane, which greatly reduces the interference of steel wire ropes and reduces the operating cost of lifting the beam segment 4 . Moreover, the self-elevating beam transport trolley of the present invention is designed as two halves (i.e. two trolley assemblies) that are easily and quickly separated and connected. The two halves can be independently towed. position, to avoid the interference of the installed boom 5 located in the middle of the two halves of the beam transport trolley, and the trolley cannot pass through.

The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not used to limit the scope of the patent application of the present invention. All equivalent changes or modifications completed under the technical spirit suggested by the present invention shall belong to The scope of patents covered by the present invention.

Claims (9)

1. An electric self-elevating beam transporting trolley for erecting the main girder of a suspension bridge, the beam transporting trolley utilizes the rail cable sliding method to slide on the rail cables, and is used to transport beam segments, it is characterized in that the beam transporting The trolley is composed of two symmetrically arranged trolley assemblies, the distribution beams of the two symmetrically arranged trolley assemblies are connected by a first pin shaft, and the first pin shaft is connected with the beam segment; each of the trolley assemblies It includes a distribution beam and a pulley mechanism. The pulley mechanism is arranged on both ends of the distribution beam. The track rollers of the pulley mechanism are located above the distribution beam and on the same level. The pulley mechanism and the Said track cable connection; said pulley mechanism is also provided with a worm gear screw lifter and an electric control box connected with said worm gear screw lifter. 2. The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 1, wherein each of the pulley mechanisms includes a pulley block and a cable block, and the pulley block is located above the distribution beam, In addition, the pulley block is connected to the cable-bearing block through a second pin shaft, the cable-bearing block is connected to the distribution beam, and the electric control box is arranged on the cable-bearing block. 3. The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 2, wherein the pulley blocks on each of the pulley mechanisms are two groups, and the two groups of pulley blocks pass through the second pin shaft Connect with the cradle block. 4. The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 2, wherein the pulley block includes two sets of track rollers, a connecting plate, and a pair of rollers between the two sets of track rollers. Locating the rope rollers, the two sets of track rollers are located above the distribution beam and connected to the cable bearing block through the connecting plate, and the connecting plate is arranged on the side of the two sets of track rollers for The two groups of track rollers are connected, the positioning rope rollers are passed through the second pin shaft, and the second pin shaft passes through the connecting plate and is connected with the cable bearing block. 5. The electric self-elevating girder transport trolley for erecting the main girder of a suspension bridge according to claim 2, wherein the sling block includes a support part connected to the distribution beam and a support part located above the support part and connected to the support part. Two symmetrically arranged connecting parts connected by the support part, the two symmetrically arranged connecting parts are respectively connected to the corresponding pulley blocks through the second pin shaft, and the worm gear screw lift is arranged between the two symmetrically arranged connecting parts . 6. The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 4, wherein each set of said track rollers comprises two track rollers, and said two track rollers are both worn through The third pin shaft is connected to the connecting plate through the third pin shaft, and the two track rollers are connected to the track cable. 7. The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 6, characterized in that, the outer surface of the connecting plate is also provided with an anti-stripping side plate, and the anti-stripping side plate passes through The third pin shaft is connected with the connecting plate. 8. The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 2, wherein the distribution beam is a rectangular distribution beam, and the rectangular distribution beam is connected to the The sling block connection of the pulley mechanism. 9 . The electric self-elevating girder trolley for erecting the main girder of a suspension bridge according to claim 2 , wherein a tray for placing the electric control box is installed on the side of the suspension bridge.