CN101294369B - Method and device for hanging and transferring bracket of movable mould frame - Google Patents

Abstract

The invention discloses a method and a device for hanging and transferring a movable mould frame bracket, which comprises the following steps: the detachable bracket main beam is separated from a pier column by using a carrying pole beam on a guide beam, and then the separated detachable bracket main beam is transposed to a lifting appliance on the guide beam; the lifting appliance conveys the detachable bracket main beam to the next pier column along the guide beam, the detachable bracket main beam is transposed to the carrying pole beam on the guide beam, and then the detachable bracket main beam is installed on the pier column by utilizing the hanging of the carrying pole beam. The invention adopts the carrying pole beam for hanging the bracket on the guide beam connected with the main beam, has simple structure, convenient operation and ingenious conception, and well solves the problems of disassembly, assembly, hanging and transportation of the bracket under the condition of no large-scale hoisting equipment, thereby using the movable formwork technology in the construction of the light single-column pier bridge with larger height. Is very suitable for mountainous and hilly areas, and can reduce the economic investment.

Description

Mobile formwork bracket hanging transfer method and device

technical field

The invention belongs to the mobile formwork bracket technology during bridge construction, and in particular relates to a mobile formwork bracket hanging transfer technology suitable for no need of large lifting equipment.

Background technique

The mobile formwork is a construction machine with its own formwork, which uses longitudinal beams to bear the load and cast concrete bridges on site. This technology originated in Western Europe in the 1950s and has now been promoted all over the world. Because the mobile formwork bridge construction method has many advantages compared with the previous bridge construction methods, it has become one of the most important bridge construction methods. The supporting forms of the mobile formwork include: supporting on the bridge deck, supporting on the cap, and supporting on the pier body (both are gravity piers). Because the bracket of the mobile formwork needs large-scale lifting equipment to realize when moving, and for the light single-column pier with a large height, especially in mountainous and hilly areas, due to the limitation of the construction site, large-scale lifting equipment cannot be used. Therefore, there is no way to adopt mobile formwork construction for the larger light-duty single-column pier at present.

Contents of the invention

The invention provides a mobile formwork bracket hanging device and a method for hanging and transporting the mobile formwork bracket that are suitable for use on a light single-column pier with a large height, so that the mobile formwork can It can also be used in bridges with single-column piers.

The technical scheme to solve the mobile formwork bracket hanging device of the present invention is: it comprises a guide beam connected with the main girder, a guide rail is arranged on the guide beam and the main girder along the longitudinal direction of the beam, a hanger movable along the guide rail is arranged on the guide rail, and the guide girder A shoulder pole beam is arranged on it, and the shoulder pole beam is connected with a bracket hoisting device.

The shoulder pole beam includes a horizontally telescopic and foldable lower pole beam arranged on the lower chord of the guide beam, an upper pole beam arranged on the upper chord of the guide beam, and an inverted chain is connected between one side or both sides of the upper pole beam and the lower pole beam.

The technical solution to solve the hanging and transshipment of the mobile formwork bracket of the present invention is: it uses the pole beam on the guide beam to separate the main beam of the detachable bracket from a pier column, and then separates the detachable bracket after separation. The main girder of the frame is transposed to the spreader on the guide beam; The pole beam on the beam, and then the detachable bracket main beam is installed on the pier column by hanging the pole beam.

The present invention adopts the pole beam used for hanging the bracket on the guide beam connected with the main beam, which has simple structure, convenient operation and ingenious conception, and solves the problem of dismantling the bracket without large-scale lifting equipment. Therefore, the mobile formwork technology is used in the construction of light single-column pier bridges with large heights. It is very suitable for mountain and hilly areas, and can also reduce economic investment.

Description of drawings

Figure 1 Schematic diagram of the mobile formwork system.

Figure 2 is a schematic diagram of the bracket in the mobile formwork.

Figure 3 is a schematic top view of the bracket structure.

Figure 4 is a schematic diagram of the structure of the pole beam and the bracket on the guide beam.

Figure 5 Schematic diagram of guide beam guide rail.

Figure 6 is a schematic diagram of the structure of the pole beam on the guide beam.

Figures 7 to 16 are schematic diagrams of the steps of assembly, disassembly and transfer of the bracket of the present invention.

Detailed ways

As shown in Figure 1, the mobile formwork system includes a bracket system 100 connected to the bridge pier column 500, a main girder mobile system 200 (including a mobile platform and a traverse jack) on the bridge pier column 500, a main girder mobile system 200 The main beam 300 supported on the top, the front guide beam 400 and the rear guide beam 401 connected to the two ends of the main beam 300, the formwork support system, the template and the main beam rear hanging facilities (not shown). The main beam 500 is a steel box girder structure welded by steel plates, and the front guide beam 400 and the rear guide beam 401 are truss structures welded by section steel. The bracket system 100 is mainly used to support and adjust the elevation of the main girder, to move laterally and separate the mobile formwork system, and to move the formwork system longitudinally through the holes. Bracket 101 is an important support system for the mobile formwork. The above-mentioned mobile formwork system is the same as the existing mobile formwork bracket technology, and the specific structure will not be repeated here.

As shown in Figure 2, the bracket system 100 includes a bracket 101, the bracket 101 is connected to the bridge pier column 500 through the corbel, the bracket 101 is provided with a lifting point 112, and the lifting point 112 is connected by the connecting rod 113 (threaded steel bar) and the bridge The section steel 120 embedded in the upper part of the pier column 500 is connected. External platforms 119 are arranged at both ends of the bracket system. The bracket system is connected to the pier column 500 through corbels 102, 103, 104, 105. As shown in FIG. 3, the bracket 101 includes interconnected bracket girders 106, 107 and interconnected bracket girders 108, 109; The ends of bracket main beams 106, 107 are provided with corbels 102, 103 extending into the holes on one side of bridge pier column 500; hole on one side. Between the bracket main beam 106 and the bracket main beam 108, detachably connect pull rods 110, 111; between the bracket main beam 107 and the bracket main beam 109, detachably connect pull rods 110, 111; thus constitute a detachable bracket rack system. Hanging holes 119 are provided on the bracket girders 106, 107, 108, 109. The bracket main beams 106 and 107 and the bracket main beams 108 and 109 are connected by a butt joint 118 , and the butt joint 118 includes a connecting plate and a pin 122 .

As shown in Figure 4, the guide beam is that the rear guide beam 401 is provided with a shoulder pole beam 600, and the shoulder pole beam 600 can pass through the bracket hoisting device arranged on the shoulder pole beam 600 when hanging and transferring, where the bracket hoisting device is 5t The electric hoist is connected with the bracket main beams 106, 107, 108, 109. The guide rail and the main beam are provided with guide rails along the longitudinal direction of the beam, and the guide rails are provided with a spreader which can move along the guide rails. In this embodiment, along the front guide beam 400, the rear guide beam 401 and the side of the main beam 300, the triangular frame 402 is welded longitudinally with section steel. The top surface of the triangular frame 402 is provided with a guide rail 421, and an electric hoist 416 is provided on the guide rail 421, as shown in the figure 5.

In this embodiment, the pole beam on the rear guide beam will be described; the structure of the pole beam on the front guide beam is the same as that on the rear guide beam; the pole beam is arranged at the bridge pier. As shown in Figure 6, an upper pole beam 615 is provided on the upper chord of the rear guide beam 401; a clamping column 601 is provided on the upper pole beam 615, and a bayonet 602 is formed between the clamping columns 601 to be positioned laterally with the upper chord of the guide beam, that is, the upper pole beam 615 It is stuck on the upper chord beam of the rear guide beam through the bayonet 602; in this way, the horizontal limit of the upper pole beam 615 is ensured, and the small vertical movement of the upper pole beam 615 is not hindered simultaneously.

A lower pole beam 614 is arranged on the lower chord of the rear guide beam 401, and the lower pole beam 614 can be folded horizontally. The lower shoulder pole beam 614 can have multiple structural forms for realizing horizontal telescopic folding, such as a horizontal telescopic structure composed of multi-section beams (like the structure of a telescopic rod), such as a rotating and folding structure composed of multi-section beams. This embodiment adopts multi-section beams to form The rotating folding structure. An inverted chain 617 is connected between the upper pole beam 615 and the lower pole beam 614 .

As shown in FIG. 6 ; the lower shoulder pole beam 614 includes a shoulder pole main beam 603 , and shoulder pole attachment beams 604 provided at both ends of the shoulder pole main beam 603 . The shoulder pole main beam 603 is arranged on the lower string beam 403 of the guide beam, and a U-shaped clamp 610 is connected between the shoulder pole main beam 603 and the lower string beam 403, and the U-shaped clamp acts as a temporary fixation to limit the longitudinal movement of the shoulder pole main beam 603. The shoulder pole main beam 603 and the shoulder pole attached beam 604 are connected by a pin shaft to realize the rotation and folding of the shoulder pole attached beam 604 , and 5 electric hoists are hung on the shoulder pole attached beam 604 . Specifically, the shoulder pole main beam 603 is connected with the fixed plate 605 up and down, the shoulder pole attached beam 604 is arranged between the two fixed plates 605, and the pin shaft 606 is connected between the fixed plate 605 and the shoulder pole attached beam 604. Beam 604 connection strength, two pin shafts 606 are connected between the fixed plate 605 and the pole-attached beam 604 . A pin shaft is drawn out during rotational folding. When hanging the bracket, a transverse connection and positioning device is also provided between the shoulder pole main beam 603 and the shoulder pole attached beam 604 and includes a connection positioning plate 607, a connection bolt 608 between the connection positioning plate 607 and the shoulder pole attachment beam, and the connection positioning plate 607 and the pole attachment beam. Bolts 608 are connected between the shoulder pole girders.

When the bracket is hung and transferred,

As shown in Figure 7:

Disassemble the bracket at the pier and open the lower pole beam 614 (expand and connect to the connection state as shown in Figure 6); and tighten the upper pole beam 615 and the lower pole beam 614 with a 5t reverse chain; simultaneously connect the front and rear guide beams to the pier copy dead between pillars;

Hang the bracket on the lower shoulder beam 614 respectively according to the four main beams 106, 107, 108, 109 of the bracket, and remove and hang the finished rolled threaded steel bar, that is, the connecting rod 113;

Remove the laterally moving external platform and bind it to the main beam of the bracket.

As shown in Figure 8

Remove the pins and bolts at the joint of the main beam of the bracket;

Then remove the detachably connected tie rods 110, 111 in order, that is, the pair of tie bars, chains, and diagonal braces, and separately bind the removed rods on the main beam of the bracket;

Finally, remove the connecting pin shafts of the connecting bracket main beams 106, 107, and remove the connecting pin shafts of the connecting bracket main beams 108, 109;

The upper pole beam 615 and the lower pole pole beam 614 move forward synchronously on the rear guide beam. Slowly and synchronously pull the bracket main beams 106, 107 forward out of the holes.

As shown in Figure 9 and 10

Bracket girders 106, 107 are pulled outward respectively;

Then bracket girders 106, 107 are hoisted respectively with the bracket hoisting device 5t electric hoist, and moved to the electric hoist 416, and the hoisting system is converted.

As shown in Figure 11 (refer to Figure 15)

1. Fold the outer end of the lower pole beam 614 inwardly (that is, fold inwardly);

2. Then use a 5t electric hoist to lift the bracket main beams 106, 107 higher than the bracket main beams 108, 109, and at the same time, the bracket main beams 106, 107 rotate outward by 90 degrees.

3. Use a 5t electric hoist 416 to transport the main beams 106 and 107 of the bracket to the next pier 502 .

As shown in Figure 12 (refer to Figure 17)

Lift the bracket main beams 106, 107 to the front of the next pier column 502; at the same time, lower and lift to the reserved hole 501;

The carrier beams 106, 107 are then rotated 90 degrees inwardly.

As shown in Figures 13 and 14 (refer to Figures 19 and 20)

Expand and connect the pole beam at the pier 502 place into the connection state as shown in Figure 6;

Then the bracket main beams 106, 107 are converted to the lower pole beam 614, and tightened, and the electric hoist 416 is loosely unloaded.

The bracket main beams 106, 107 slowly move laterally toward the pier column on the lower pole beam 614 as shown in the figure.

As shown in Figure 15 and 16 (refer to Figure 21 and 22)

After the main beams 106 and 107 of the bracket are aligned and closed, together with the lower pole beam 614 and the upper pole beam 615, they slowly move longitudinally on the leading beam toward the pier column;

Insert the corbels 102, 103 into the reserved holes 501 of the piers, and plug them tightly;

At the same time, the electric hoist 416 is returned to the pier 500.

Then the bracket girders 108, 109 are transferred from the pier column 500 to the pier column 502 according to the above method.

After aligning the joints of bracket main beams 106 and 107, 108 and 109, insert the pin shaft and tighten the bolts, install and stretch and hang the finish-rolled threaded steel bar, that is, the connecting rod 113.

Then the bracket main beams 106 and 108, 107 and 109 are connected to form the structural form shown in FIG. 3 . Finally, remove the inverted chain 617 between the lower pole beam 614 and the upper pole beam 615, and put the lower pole beam away.

Claims (9)

1. A mobile formwork bracket hanging device, which includes a guide beam connected to the main beam, a guide rail is set on the guide beam and the main beam along the longitudinal direction of the beam, and the guide rail is provided with a hanger that can move along the guide rail, and it is characterized in that the guide beam There is a pole beam on the top, and the pole beam is connected to a bracket hoisting device; the pole beam includes a lower pole beam set on the lower chord of the guide beam that can be stretched and folded horizontally, an upper pole beam set on the upper chord of the guide beam, the upper pole beam and the lower pole An inverted chain is connected between one or both sides of the beam. 2. Mobile formwork bracket hanging device as claimed in claim 1, characterized in that the horizontally telescopic and foldable lower shoulder pole beam comprises a shoulder pole main beam arranged on the lower chord of the guide beam, and the shoulder pole main beam is provided with a A shoulder pole attached to a beam that the beam moves or rotates. 3. The mobile formwork bracket hanging device as claimed in claim 2, characterized in that the shoulder pole main beam and the shoulder pole attached beam are connected with pin shafts, and the shoulder pole main beam and the shoulder pole attached beam are also connected with the shoulder pole main beam and the shoulder pole The lateral connection positioning device of the attached beam. 4. Mobile formwork bracket hanging device as claimed in claim 3, characterized in that said transverse connection positioning device comprises a connection positioning plate, connecting bolts between the connection positioning plate and the shoulder pole attached beam, connecting the positioning plate and the shoulder pole main beam connecting bolts. 5. The hanging device for mobile formwork brackets as claimed in claim 1, characterized in that clamping columns are set on the upper pole beam, and bayonets are formed between the clamping columns to be positioned laterally with the upper chord of the guide beam. 6. The mobile formwork bracket hanging device according to claim 1, characterized in that the U-shaped connection card is temporarily fixed between the lower chord of the guide beam and the lower shoulder beam. 7. The mobile formwork bracket hanging device as claimed in claim 3, characterized in that the shoulder pole main beam is connected with fixed plates up and down, the shoulder pole attached beams are arranged between the fixed plates, and the fixed plate and the shoulder pole attached beams are connected with pin shafts. 8. A method for hanging and transporting mobile formwork brackets, which uses the pole beam on the guide beam to separate the main girder of the detachable bracket from a pier column, and then separates the main girder of the detachable bracket after separation. After the beam is transposed to the spreader on the guide beam; the spreader transports the main girder of the detachable bracket to the next pier column along the guide beam, and transposes the main girder of the detachable bracket to the guide beam The pole beam on the pole, and then use the suspension of the pole beam to install the detachable bracket main beam on the pier column, the guide beam is connected with the main beam, and guide rails are arranged on the guide beam and the main beam along the longitudinal direction of the beam. A spreader that can move along the guide rail is provided, and a pole beam is arranged on the guide beam, and the pole beam is connected with a bracket hoisting device; The upper pole beam is connected with an inverted chain between one or both sides of the upper pole beam and the lower pole beam. 9. mobile formwork bracket hanging transshipment method as claimed in claim 8, it is characterized in that after the separated detachable bracket main girder is transposed on the spreader on the guide beam, the The detachable bracket girder is turned; after the detachable bracket girder is transported to the next pier column, the detachable bracket girder is turned on the spreader.

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