Reinforcement cage lowering device

Abstract

The utility model relates to hoisting equipment, and provides a reinforcement cage lowering device which comprises a frame, a positioning device arranged on the side edge of the frame and a traction device arranged at the upper end of the frame. The positioning device comprises a fixing plate connected with the side edge of the frame, an air bag arranged on the fixing plate, an inflation and deflation device communicated with the air bag and a positioning plate arranged on the side, away from the fixing plate, of the air bag. According to the steel reinforcement cage lowering device, the steel reinforcement cage can be lowered and lengthened more efficiently and safely.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, in particular to a steel cage lowering device. Background Art

[0002] Suspension bridges are the most ideal bridge type for crossing obstacles over a kilometer. Their main structures include main beams, bridge towers, cable saddles, anchors, and slings. Most of the main tower foundations are large-diameter and ultra-long piles. The total weight of the steel cage of a single pile foundation can easily reach tens of tons, or even more than a hundred tons, and some have multiple layers of steel cages. The use of lifting equipment such as gantry cranes and crawler cranes can no longer meet the requirements for extending and lowering the pile foundation steel cage.

[0003] Bored cast-in-place pile foundation is a common foundation form for large bridge foundations. During the construction of large-diameter and extra-long pile foundations, the steel cage needs to be manufactured in sections, extended and lowered. After the single-section steel cage is lowered into place, it needs to be temporarily fixed to facilitate the extension of the steel cage. Traditional small-diameter pile foundation construction mostly uses shoulder pole beams or on-site I-beams to insert the steel cage and then place it on a platform for fixation. However, for large-diameter and extra-long pile foundations, the total weight of the steel cage of a single pile foundation is generally heavy, reaching more than 100 tons. Especially for the lowering of some double-layer steel cages, the use of shoulder pole beams or on-site I-beams cannot meet the force requirements and is not convenient for the extension of the inner ring steel cage, so they need to be improved and optimized. Utility Model Content

[0004] The utility model aims to provide a reinforcement cage lowering device, which can perform the lowering and lengthening operation of the reinforcement cage more efficiently and safely.

[0005] The embodiments of the utility model are realized through the following technical scheme: the steel cage lowering device of the utility model includes a frame, a positioning device arranged on the side of the frame, and a traction device arranged on the upper end of the frame; the positioning device includes a fixing plate connected to the side of the frame, an airbag arranged on the fixing plate, an inflation and deflation device connected to the airbag, and a positioning plate arranged on the side of the airbag away from the fixing plate.

[0006] Furthermore, the frame is a cubic structure.

[0007] Furthermore, the positioning device is arranged in the middle of the frame.

[0008] Furthermore, the airbags are provided in pair, and the pair of airbags are respectively arranged at the upper and lower ends of the fixing plate; and the pair of airbags are both connected to the positioning plate.

[0009] Furthermore, a pair of the positioning devices is provided, and the pair of the positioning devices is arranged on two adjacent sides of the frame.

[0010] Furthermore, the traction device includes a pulley arranged at the upper end of the frame, a traction machine arranged on the frame, and a traction rope connected to the traction machine; the movable end of the traction rope passes around the pulley and is arranged inside the frame.

[0011] Furthermore, a plurality of hanging rings are provided on the upper end of the frame.

[0012] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the steel cage lowering device of the utility model uses a lifting machine to lift the frame when in use, and then puts it on the steel cage, and connects the steel cage with the traction device, and then uses the lifting machine to lift the frame and the steel cage together, move it to the top of the steel cage that has been fixed on the pile foundation, and lower the frame so that the frame also puts the fixed steel cage in it (so that there are two steel cages in the frame), when the two steel cages are about to contact, use the inflation and deflation device in the positioning device to inflate the airbag, and the airbag squeezes the positioning plate after inflation, and the positioning plate simultaneously pushes the two steel cages to the inner side of the frame, so that the two steel cages can be better aligned, and then the traction device is adjusted to make the two steel cages completely contact, and then the two steel cages are manually connected, and finally the airbag shrinks, and the lifting machine lifts the frame, and the subsequent steel cage installation work can be carried out, so that even for double-layer or more-layer steel cages, it can also be well connected and installed, and the alignment and connection can be faster and more accurate during installation, and the safety is also better, and the production efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of a reinforcement cage lowering device provided in an embodiment of the utility model;

[0015] Figure 2 A schematic structural diagram of the positioning device part provided in an embodiment of the utility model.

[0016] Icon: 1-frame, 2-fixed plate, 3-airbag, 4-positioning plate, 5-traction machine, 6-pulley, 7-traction rope, 8-connecting ring. DETAILED DESCRIPTION

[0017] Example

[0018] The following is further described in conjunction with specific embodiments. Figure 1 -Attached Figure 2 As shown, the steel cage lowering device of this embodiment includes a frame 1, a positioning device arranged on the side of the frame 1, and a traction device arranged on the upper end of the frame 1; the positioning device includes a fixing plate 2 connected to the side of the frame 1, an air bag 3 arranged on the fixing plate 2, an inflation and deflation device connected to the air bag 3, and a positioning plate 4 arranged on the side of the air bag 3 away from the fixing plate 2. Specifically, during use, the frame 1 is lifted up by a lifting machine, and then put on the steel cage, and the steel cage is connected to the traction device, and then the frame 1 and the steel cage are lifted up by a lifting machine, and moved to the top of the steel cage that has been fixed on the pile foundation, and the frame 1 is lowered, so that the frame 1 also puts the fixed steel cage in it (so that there are two steel cages in the frame 1). When the two steel cages are about to contact, the air filling and deflation device in the positioning device is used to inflate the airbag 3. After the airbag 3 is inflated, it squeezes the positioning plate 4, and the positioning plate 4 simultaneously pushes the two steel cages to the inner side of the frame 1, so that the two steel cages can be better aligned, and then the traction device is adjusted to make the two steel cages completely contact, and then the two steel cages are manually connected, and finally the airbag 3 shrinks, and the lifting machine lifts the frame 1, and the subsequent steel cage installation work can be carried out. In this way, even for double-layer or more-layer steel cages, it can also be well connected and installed, and the alignment and connection can be faster and more accurate during installation, and the safety is also better, and the production efficiency is higher.

[0019] The frame 1 in this embodiment is a cubic structure. The positioning device is arranged in the middle of the frame 1. A pair of airbags 3 are provided, and the pair of airbags 3 are respectively arranged at the upper and lower ends of the fixing plate 2; the pair of airbags 3 are connected to the positioning plate 4. A pair of positioning devices are provided, and a pair of positioning devices are arranged on two adjacent sides of the frame 1. Specifically, the cubic frame 1 is easier to design and manufacture, and the cost is also lower. And a pair of airbags 3 can better keep the upper and lower ends of the positioning plate 4 under the same force. The ground positioning device can better align the two steel cages completely.

[0020] The traction device in this embodiment includes a pulley 6 disposed at the upper end of the frame 1, a traction machine 5 disposed on the frame 1, and a traction rope 7 connected to the traction machine 5; the movable end of the traction rope 7 passes over the pulley 6 and is disposed inside the frame 1. Specifically, the traction device is mainly equipment such as a wire drawing machine, which is mainly used to finely adjust the position of the steel cage.

[0021] The upper end of the frame 1 in this embodiment is provided with a plurality of hanging rings. Specifically, the hanging rings are mainly used to connect with the lifting machinery to facilitate lifting.

[0022] In summary, the steel cage lowering device of this embodiment uses a lifting machine to lift the frame 1 when in use, and then puts it on the steel cage, and connects the steel cage to the traction device, and then uses the lifting machine to lift the frame 1 and the steel cage together, move them to the top of the steel cage that has been fixed on the pile foundation, and lower the frame 1 so that the frame 1 also puts the fixed steel cage in it (so that there are two steel cages in the frame 1). When the two steel cages are about to contact, the air filling and deflation device in the positioning device is used to inflate the airbag 3. After the airbag 3 is inflated, it squeezes the positioning plate 4, and the positioning plate 4 simultaneously pushes the two steel cages to the inner side of the frame 1, so that the two steel cages can be better aligned, and then the traction device is adjusted to make the two steel cages completely contact, and then the two steel cages are manually connected, and finally the airbag 3 shrinks, and the lifting machine lifts the frame 1, and the subsequent steel cage installation work can be carried out. In this way, even for double-layer or more-layer steel cages, it can also be well connected and installed, and the alignment and connection can be faster and more accurate during installation, and the safety is also better, and the production efficiency is higher.

[0023] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel cage lowering device, characterized in that: It comprises a frame (1), a positioning device arranged on the side of the frame (1), and a traction device arranged on the upper end of the frame (1); The positioning device comprises a fixing plate (2) connected to the side of the frame (1), an air bag (3) arranged on the fixing plate (2), an inflation and deflation device connected to the air bag (3), and a positioning plate (4) arranged on a side of the air bag (3) away from the fixing plate (2).

2. The steel cage lowering device according to claim 1 is characterized in that: The frame (1) is a cubic structure.

3. The steel cage lowering device according to claim 1 is characterized in that: The positioning device is arranged in the middle of the frame (1).

4. The steel cage lowering device according to claim 1 is characterized in that: The airbags (3) are provided in pair, and the pair of airbags (3) are respectively arranged at the upper and lower ends of the fixing plate (2); the pair of airbags (3) are both connected to the positioning plate (4).

5. The reinforcement cage lowering device according to any one of claims 1 to 4, characterized in that: A pair of positioning devices are provided, and the pair of positioning devices are arranged on two adjacent sides of the frame (1).

6. The steel cage lowering device according to claim 1 is characterized in that: The traction device comprises a pulley (6) arranged at the upper end of the frame (1), a traction machine (5) arranged on the frame (1), and a traction rope (7) connected to the traction machine (5); the movable end of the traction rope (7) passes around the pulley (6) and is arranged inside the frame (1).

7. The steel cage lowering device according to claim 1 is characterized in that: The upper end of the frame (1) is provided with a plurality of hanging rings.

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