JPH05155580A - Method and device for climbing tower crane - Google Patents

Abstract

PURPOSE:To reduce the number of workers and enhance the safety and efficiency of work by drawing the pins of pivotally attaching portions without turning crane supporting members to the upper floor, and then hoisting a mast using a crane lift. CONSTITUTION:An upper supporting member 15 freely movably and pivotally attached 16 by angle braces 19 to a crane lift 13 attached to a mast 2 is held in a horizontally supporting state and a lower supporting member 3 freely movably and pivotally attached 4 by angle braces 7 to the lower end of the mast 2 is released from its supporting state and then the mast 2 is hoisted by the crane lift 13. Next, the lower supporting member 3 is held in a horizontally supporting state and is supported to the upper floor and then the upper supporting member 15 is released from its supporting state and then the mast 2 is hoisted by the crane lift 13 and the upper supporting member 15 is held in a horizontally supporting state and is supported to the upper floor. The above operations are repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a climbing method and a climbing method for raising a tower crane by using a support material that can be opened and closed without refilling the support material such as H-section steel used as a reaction member. It relates to the device.

[0002]

2. Description of the Related Art Conventionally, in order to perform climbing of a floor climbing type tower crane, as shown in FIG. 5, a frame 33 at the lower end of the mast 32 of the crane body 31 and a steel frame of the floor 1F on the first floor therebelow are used. A crane elevating device in which a tower crane main body 31 is supported by interposing a supporting member 35 such as an H-shaped steel horizontally placed between the crane 34 and a hydraulic jack 36 above the mast 32. 37 is loosely inserted, and a supporting member 40 such as H-shaped steel is interposed between the upper frame 38 of the crane lifting device 37 and the steel beam 39 on the floor of the upper floor 4F, and the upper frame 8 is interposed by the supporting member 40. The mast 32 is raised by the hydraulic jack 36 using the steel beam 39 as a reaction force, and then the support member 35 after the lower end portion of the mast 32 is raised is carried from the position of the chain line to the position of the upper floor 3F as shown in FIG. Re-raise Steel beam 41 via a support member 35
Climbing is performed by repeating the operation of raising the crane main body 31 by using as a reaction force.

[0003]

In the conventional climbing method for a tower crane described above, it is necessary to carry a supporting material for supporting the weight of the crane main body and the mast to the upper floor every time climbing and replace the supporting material. It takes several workers to carry heavy support materials to the upper floors, and because it carries heavy objects, the work is dangerous, and it is very troublesome and time-consuming, and climbing work is quick. There was a drawback that I could not do. This invention
It is an object of the present invention to solve the above-mentioned drawbacks and to obtain a climbing method and a climbing method that can perform work safely and promptly without requiring human power.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides an upper support member pivotally attached to a crane lifting device mounted on a mast so as to be openable and closable horizontally.
After releasing the support state of the lower support member that is pivotally attached to the lower end of the mast, the mast is raised by the crane lifting device, and then the lower support member is supported horizontally on the floor of the upper floor, A climbing method for a tower crane, in which the operation of releasing the supporting state of the upper support member and raising the mast by the crane lifting device and then supporting the upper support member in the horizontal support state on the floor of the upper floor is repeated, and the mast. A lower support member is pivotally attached to the lower end of the crane so that it can be opened and closed, and a lower end of a cane pivotally attached to the upper end of the lower support member is detachably pivoted to the tip of the lower support member, and the crane lifting device is attached to the upper part of the mast. A means comprising a climbing device for a tower crane in which a tip of a cane pivotally attached to the upper end of an upper support material pivotally attached to the lower end of the tower is detachably attached. It is intended Jill.

[0005]

Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, lower supporting members 3 and 3 are pivotally attached to the lower ends of both side edges of a mast 2 of a tower crane main body 1 and 4, and base portions of the mast 2 are pivotally attached 6 and 6 to tip portions 5 and 5, respectively. Steel beams 8a, 8 with the tips of the canes 7, 7 on the first floor floor 1F
It is pivotally mounted on the plate a so that it can be detached in the horizontal direction. A crane lifting device 13 having a hydraulic jack 12 mounted between an upper frame 10 and a middle frame 11 is provided at an upper portion of the mast 2, and an upper support member 15 is pivotally attached to the lower frame 14 thereof. The base portion of the cane 19, which is pivotally attached to the middle frame 11 at its tip portions 17, 17, has its tip portion over the steel beams 8b, 8b of the floor 2F on the second floor.
The steel beams 8c, 8c of the floor 3F of the floor are detachably pivoted 20, 20 from the horizontal direction shown by the chain line to the vertical direction shown by the solid line, and the pivotal connection above the cane 7 of the mast 2 is made. An electric winch 21 and an electric winch 22 are attached to the upper part of the six points and to the middle frame 11 of the crane lifting device 13, and between the electric winch 21 and the tip portions 5 and 5 of the lower support members 3, 3 and between the electric winch 22 and the upper support. Wires 23 and 24 are connected between the tip portions 17, 17 of the members 15, 15 respectively. In addition to the electric winch, a hydraulic jack or the like can be used to open and close the lower support member 3 and the upper support member 15.

In order to climb the tower crane body 1 from this state, the electric winch 22 as shown in FIG.
The wire 24 is loosened and the upper support members 15, 15 are tilted in the horizontal direction, and the tips 17 and 17 and the tips of the canes 19 and 19 are inserted into the pins 20 and 20 to bring them into a supported state. , Tip portions 5 and 5 of the lower support members 3 and 3 and the cane 7,
The pivot support 8 to the tip of 7 and the pin of 8 part are pulled out and removed, and the wire 23 is wound up by the electric winch 21 and the lower support member 3,
After erecting 3 to release the supporting state, the hydraulic jack 12 of the crane lifting device 13 is operated to raise the mast 2. After further raising it, loosen the wire 23 with the electric winch 21 as shown in FIG.
3 is opened on the steel beams 8b, 8b of the floor on the second floor so as to be almost horizontal, and then, as shown in FIG. 4, the tip portions 5, 5 of the lower support members 3, 3 and the cane 7, Pins are inserted into the pivotal attachments 9 and 9 at the tip of 7, and the steel beam 8b of the floor 2F on the second floor,
8b and the upper support 1
5. Pull out the pin of pivoting 20, 20 from the tip of the cane 19, 19 pivotally attached to the tip 17, 17 of 5, 15 and wind the wires 24, 24 with the electric winch 22. After the upper support members 15 and 15 are uprighted by the above and the supporting state is released, the lower support members 3 and 3 cause the steel beam 8b,
The tower crane main body can be climbed by repeating the process of operating the hydraulic jack 12 of the crane lifting device 13 with 8b as a reaction force to bring the hydraulic jack 12 into the state of FIGS.

[0007]

According to the first aspect of the present invention, it is not necessary to remount the support material on the floor to the upper floor by a large number of workers in order to climb the tower crane body as in the conventional case, and the worker does not need to mount the pivoting portion. All you have to do is insert or remove the pin and then lift the mast with a normal crane lifting device, which can significantly reduce the number of workers and improve work safety. Work efficiency is also improved.
According to the invention of claim 2, the structure is simple and the effect of claim 1 can be obtained because only the structure in which the upper support member and the lower support member are pivotally mounted to be openable and closable is added to the mast.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a climbing method for a tower crane according to the present invention, which is an explanatory view with a diagram.

FIG. 2 is a front view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a front view of the same.

FIG. 5 shows a conventional method and is a front view similar to the embodiment.

FIG. 6 is a front view of the same.

[Explanation of symbols]

 1 Tower Crane Main Body 2 Mast 3 Lower Support Material 4 Pivot Attachment 5 Tip Part 6 Pivot Attachment 7 Claw 9 Pivot Attachment 13 Crane Lifting Device 15 Top Support Material 16 Pivot Attachment 17 Tip Part 18 Pivot Attachment 19 Pole Attachment 20 Pivot Attachment

Claims (2)

[Claims] 1. An upper support member (15) pivotably attached (16) to a crane lifting device (13) attached to a mast (2) in a horizontally supported state and opened and closed at a lower end of the mast (2). After releasing the supporting state of the lower support member (3) pivotally attached (4), the mast (2) is raised by the crane lifting device (13), and then the lower support member (3) is placed in a horizontal supporting state. The upper support (15) is supported horizontally, the upper support (15) is released from the support state and the crane lifting device (13) is used to raise the mast (2), and then the upper support (15) is horizontally supported. A climbing method for a tower crane in which the operation of supporting the floor on the upper floor is repeated. 2. A lower support (3) at the lower end of the mast (2).
Is pivoted (4) so that it can be opened and closed, and the lower end of a cane (7) pivotally mounted (6) above it is detachably pivoted (9) to the tip (5) of the lower support (3). And the tip end (1) of the upper support member (15) pivotally attached (16) to the lower end of the crane lifting device (13) attached to the upper part of the mast (2).
7) A climbing device for a tower crane, in which a tip of a cane (19) pivotally attached (18) to the upper side is detachably pivotally attached (20).