CN104213513B - A high-altitude construction device after the bridge rotates - Google Patents

Abstract

A high-altitude construction device behind a bridge swivel comprises a bridge main tower and is characterized in that a plurality of adsorption devices are uniformly and symmetrically arranged on the bridge main tower from top to bottom, a plurality of short beams are connected between the adsorption devices which are symmetrically arranged to form an adsorption seat, and a track is arranged on the short beams from top to bottom along the radian of the bridge main tower; tooth grooves are arranged on one side or two sides of the track, the lifting machine moves down on the track by controlling the rotation of a gear meshed with the tooth grooves, and a construction platform is arranged above the lifting machine. The invention has the beneficial effects that: by utilizing the strong magnet to attract the bridge body and installing the track, the construction operation platform can move up and down on the main body of the bridge tower to meet various construction requirements, thereby realizing good treatment effect and filling the technical blank in China.

Description

A high-altitude construction device after the bridge rotates

technical field

The invention relates to a bridge construction operation device, in particular to a high-altitude construction device after the bridge is rotated and an installation and use method thereof.

Background technique

At present, the vertical swivel construction method of the bridge body has been applied in bridge construction. For example, the Chinese invention patent with the authorized announcement number CN102635070B discloses a vertical swivel construction method of the steel tower of a cable-stayed bridge:

(1) Install the left steel tower base and the right steel tower base on the existing main pier of the left bridge and the main pier of the right bridge respectively, and use the completed steel girder deck as a welding construction platform. The left steel tower and the right steel tower are respectively welded on both sides of the bridge deck, and then the left tie rod and the left pressure rod are installed on the left steel tower, and the left steel tower, the left tie rod and the left pressure rod form the left side. The tripod, correspondingly, the right tie rod and the right pressure rod are set on the right steel tower, the right steel tower, the right tie rod and the right pressure rod form the right tripod, and the two ends of the flexible load-bearing steel strand are respectively connected The apex of the triangle on the top of the left tripod and the right tripod, and the flexible load-bearing steel strands pass through the swivel oil cylinder.

(2) The steel tower counterweight is placed on the right steel tower to prepare for the swivel construction of the left steel tower. Using the computer to control the hydraulic synchronous lifting system, the flexible load-bearing steel strand is tensioned through the swivel cylinder, and the left steel tower is gradually lifted, so that the left steel tower rotates at a certain angle, and the flexible load-bearing steel strand continues to be tensioned to complete the left side. The swivel construction of the steel tower makes the left steel tower 3 close up, and then the load of the flexible load-bearing steel strand is unloaded, and the back steel strand is stretched on the left steel tower.

(3) Remove the steel tower counterweight on the right steel tower to prepare for the rotation of the right steel tower, tension the flexible load-bearing steel strands through the swivel cylinder, and gradually lift the right steel tower to make the right Rotate the steel tower at a certain angle, continue to tension the flexible load-bearing steel strand, and complete the rotation construction of the right steel tower, so that the right steel tower is closed, then unload the load of the flexible load-bearing steel strand, and remove the Back steel strands, remove the left tie rod and left compression bar, the right pull rod and right compression bar, and the flexible load-bearing steel strands. Complete the swivel construction of the steel tower of the cable-stayed bridge.

After the construction method completes the bridge rotation, the main tower of the bridge still needs to be cleaned, the installation of detection points, and high-altitude operations such as passing steel cables. Due to the high height of the main tower of the bridge, such operations are very dangerous, and the monitoring points are arranged at the same time. Anywhere of the main tower of the bridge is possible, but the existing construction hanging basket is difficult to complete the above difficult and dangerous construction operations. For this high-altitude operation, it is possible to carry out construction work on the whole body of the main body of the swivel bridge tower. At present, there is no such device in China.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art above, and provide a high-altitude construction device after the bridge is rotated and its installation and use method. The track enables the construction work platform to move up and down on the main body of the bridge tower to meet various construction needs and achieve good construction results.

For realizing the purpose of the present invention, the technical scheme that the present invention adopts is:

A high-altitude construction device after the bridge is rotated, including the main tower of the bridge body. The suction seat is formed between the adsorption devices, and the track is installed on the short beam from top to bottom along the arc of the main tower of the bridge body; cogging is installed on one or both sides of the track, and the lifting machinery is connected with the cogging through control. The meshed gears rotate to move up and down on the track, and a construction platform is installed above the lifting machine.

Preferably, the adsorption device includes an outer frame, one side of the degaussing material protective shell is movably mounted on the back edge of the outer frame through a hinge, the powerful magnet is fixed in the degaussing material protective shell through fasteners, and the connecting piece is arranged inside the degaussing material protective shell.

Preferably, it also includes an opening and closing disk, the opening and closing disk is semi-elliptical, and its upper side edge is fixedly connected with the bottom of the other side of the degaussing material protective shell through a connecting pin, and the adjusting wrench is installed on the opening and closing disk for rotating degaussing Material protective case.

For an improvement of the present invention, a construction platform 2 that can be adjusted left and right is provided below the construction platform, and pin holes are evenly arranged on the track.

Based on the above structure, the present invention also provides a method for installing and using a high-altitude construction device after the bridge is rotated, which is characterized in that it includes the following steps:

1) Before the bridge turns, install the adsorption device and the short beams in sequence on the main tower of the bridge body, and install the track on the short beams;

2) Fixed pulleys are installed on the top of the main tower of the bridge body and at the position with the largest corner arc, and steel cables are wound on them;

3) After the main tower of the vertical bridge body is rotated successfully, the lifting machinery, construction platform and construction platform 2 are installed on the track;

4) Install the electric winch at the bottom of the main tower of the bridge body, and connect one end of the steel cable wound on the fixed pulley to the construction platform or the second adjustment construction platform, and connect the other end to the electric winch;

5) Start the lifting machinery and start to move up and down on the track for construction work. When the lifting machinery is lifted to the maximum angle arc, the electric winch is used to rotate the steel cable through the fixed pulley so that the lifting machinery is tightened and fixed. After the lifting machinery continues to rise steadily Pass through the arc of the corner and then loosen the cable;

6) After the construction is completed, disassemble the lifting machinery, construction platform and adjustment construction platform 2 in sequence, and use a crane to remove the fixed pulley and short beam;

7) Use the crane again to manually lift up the adjusting wrench to separate the powerful magnet on the adsorption device from the main tower of the bridge body and remove the adsorption device to complete the overall construction.

The beneficial effects of the present invention are: by using a strong magnet to attract the bridge body, the construction work platform can move up and down on the main body of the bridge tower to meet various construction needs in the installation track, and a good construction effect is achieved in terms of disassembly, and at the same time Filled the domestic technical gap.

Description of drawings

The invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments are shown.

Fig. 1 is the construction diagram when the high-altitude construction device after the bridge of the present invention is swiveled is in use;

Fig. 2 is the structural representation of the high-altitude construction device behind the bridge rotation of the present invention;

Fig. 3 is a schematic structural view of the adsorption device of the present invention.

In the figure: 2, tooth groove, 3, bolt, 4, gear, 5, pin hole, 6, lifting machinery, 7, construction platform, 8, construction platform 2, 9, degaussing material protective shell, 10, outer frame, 11, hinge, 12, opening and closing disc, 13, powerful magnet, 14, track, 15, fastener, 16, connecting pin, 17, adjusting wrench, 19, electric winch wheel, 20, main tower of bridge body, 21, Fixed pulley one, 22, fixed pulley two, 23, short beam, 24, adsorption device, 25, connecting piece.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

Example 1

As shown in Fig. 1, a kind of high-altitude construction device after the bridge body rotates, comprises bridge body main tower 20, on the bridge body main tower 20 uniformly and symmetrically installed with a plurality of adsorption devices 24 from top to bottom, a plurality of short girders 23 Connect between the symmetrically installed adsorption devices 24 to form a suction seat, and the track 14 is installed on the short beam 23 from top to bottom along the arc of the main tower 20 of the bridge body; Also be provided with piercing pin hole 5 evenly above, when construction platform needs to stay in a certain position for a long time, can pierce pin hole 5 to insert retaining pin again and construction platform is positioned.

The lifting machine 6 moves up and down on the track 14 by controlling the rotation of the gear 4 meshed with the tooth groove 2. A construction platform 7 is installed above the lifting machine 6, and a construction platform 2 that can be adjusted left and right is also provided below the construction platform 7. 8. The construction platform 28 can move left and right to meet different construction requirements.

Fixed pulley two 22 and fixed pulley one 21 are respectively installed at the top of the main tower 20 of the bridge body and the place where the turning angle is the largest, and an electric winch 19 is installed at the bottom end of the main tower 20 of the bridge body, and two steel cables walk around the second fixed pulley respectively 22 and fixed pulley one 21, its one end is connected above the construction platform 7, and the other end connects electric winch 19.

As shown in Figures 2 and 3, the adsorption device 24 includes an outer frame 10, one side of the two degaussing material protective shells 9 is movably installed on the back edge of the outer frame 10 through a hinge 11, and the powerful magnet 13 is fixed on the degaussing material protection by a fastener 15. Inside the shell 9 , the connecting piece 25 is arranged inside the protective shell 9 . In addition, it also includes an opening and closing disk 12, the opening and closing disk 12 is semi-elliptical, and its upper side edge is fixedly connected with the bottom of the other side of the degaussing material degaussing material protective shell 9 through a connecting pin 16, and the adjustment wrench 17 is installed on the opening and closing The disk 12 is used to rotate the degaussing material protection 9 above.

Based on the above-mentioned device, the installation and use method of the present invention includes the following steps:

1) Install the adsorption device 24 and the short beam 23 uniformly in sequence on the main tower 20 of the bridge body before the bridge rotation, and install the track 14 on the short beam 23, and absorb the strong magnet 13 on the adsorption device 24 during installation On the main tower 20 of the bridge body, the two sides of the short beam 23 are fixed in the holes of the connecting piece 25 through bolts 3 , so that the short beam 23 is installed between the adsorption devices 24 .

2) Fixed pulley two 22 and fixed pulley one 21 are installed on the top of the main tower 20 of the bridge body and at the position with the largest corner radian, and steel cables are wound on them respectively;

3) After the main tower 20 of the vertical bridge body is rotated successfully, the lifting machine 6, the construction platform 7 and the construction platform 2 8 are installed on the track 14;

4) Install the electric winch 19 at the bottom of the main tower 20 of the bridge body, and connect one end of the steel cable wound around the fixed pulley two 22 and the fixed pulley one 21 on the construction platform 7, and connect the electric winch 19 at the other end;

5) Start the hoisting machine 6 and start to move up and down on the track 14 to carry out construction operations. Any one of the bridge main tower 20 can be installed with monitoring points, construction operations such as welding and transporting building materials. Simultaneously, in order to ensure safety when hoisting machinery 6 is lifted to the maximum point of corner radian, electric winch 19 can be utilized to rotate steel cable by fixed pulley two 22 and fixed pulley one 21 so that hoisting machinery 6 is tightened and fixed, and hoisting machinery 6 Continue to rise steadily and pass through the arc of the corner, and then relax the cable, which greatly improves the safety factor;

6) After the construction is completed, the lifting machine 6, the construction platform 7 and the adjustment construction platform 2 8 are dismantled in sequence, and the fixed pulley and the short beam 23 are dismantled by a crane;

7) Use the crane again to lift up the adjusting wrench 17 manually, so that the powerful magnet 13 above the adsorption device 24 is separated from the main tower 20 of the bridge body, and the adsorption device 24 is removed to complete the overall construction.

Claims (3)

1. a high-altitude construction device behind the bridge swivel, comprising bridge body main tower (20), it is characterized in that, on the described bridge body main tower (20), a plurality of adsorption devices ( 24), a plurality of short beams (23) are connected between symmetrically installed adsorption devices (24) to form a suction seat, and the track (14) is installed on the short beams (23) from top to bottom along the arc of the main tower (20) of the bridge body. ) on one side or both sides of the track (14) is equipped with cogs (2), and the lifting machine (6) is realized on the track (14) by controlling the rotation of the gear (4) meshed with the cogs (2). ) moves up and down, and a construction platform (7) is installed above the lifting machine (6); a construction platform two (8) that can be adjusted left and right is also provided below the construction platform (7), and the track (14) is also equipped with Pin holes (5) are arranged; fixed pulley two (22) and fixed pulley one (21) are respectively installed on the top of the main tower (20) of the bridge body and at the place with the largest turning angle, and fixed pulley one (21) is installed at the bottom of the main tower (20) of the bridge body Electric winch (19), two steel cables walk around fixed pulley two (22) and fixed pulley one (21) respectively, and its one end is connected on the construction platform (7), and the other end connects electric winch (19). 2. The high-altitude construction device after bridge rotation according to claim 1, characterized in that: the adsorption device (24) includes an outer frame (10), and one side of the degaussing material protective shell (9) passes through the hinge (11) Movably installed on outer frame (10) back edge, powerful magnet (13) is fixed in the degaussing material protective shell (9) by fastener (15), and connecting piece (25) is located at the inboard of degaussing material protective shell (9). 3. The high-altitude construction device after the bridge is rotated according to claim 2, characterized in that: it also includes a opening and closing plate (12), and the opening and closing plate (12) is semi-elliptical, and its upper side edge and demagnetization The other side bottom of material protection shell (9) is fixedly connected by connecting pin (16), and adjusting wrench (17) is installed on the opening and closing disk (12) and is used for rotating degaussing material protection shell (9).