JPS6214069Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a crane for erecting tower-like structures.

Generally, creeper cranes are often used to erect steel tower structures. This type of conventional crane for erecting a tower-like structure is used to raise the crane one by one as the tower-like structure is being erected. This made the work easier and safer, but it required a lot of work to replace the guide rails, and depending on the block layout of the tower-like structure, a large amount of guide rails had to be used. It was necessary and extremely uneconomical.

In view of the above points, the object of the present invention is to provide an economical crane for erecting a tower-like structure, which can perform hoisting work easily and quickly.

That is, the present invention provides fixing blocks that are removably attached to the outer surface of a tower-like structure at appropriate intervals in the vertical direction, and a crane body on which a derrick crane is mounted has a length that spans at least three of the fixed blocks. a guide member that engages the block in a vertically movable manner; a fixing member that temporarily fixes the crane body to the fixed block; and an upper end of a tower-like structure for raising the crane body. The crane is characterized by being provided with a winding device that moves the crane body in the vertical direction by winding up the rope wound between the crane and the lifting support member detachably attached to the crane. Since the crane body is guided using a fixed block for temporarily fixing the crane, the conventional guide rail is not required, and it is extremely economical. Because it is small and lightweight, it is easy to reposition, and to raise the crane body, all you have to do is use the winding device to wind up the rope that is wound between the crane body and the lifting support member. This allows the crane to be hoisted easily and quickly.

An embodiment of the present invention will be described below based on the drawings. In FIGS. 1 and 2, 1 and 1 are tower-like structures under construction, and these tower-like structures 1 have a support member 2 for raising the ground removably attached to the upper end, and A plurality (four in this embodiment) of fixing blocks 3 having an H-shaped cross section are removably attached to one side of the part at appropriate intervals in the vertical direction. Reference numeral 4 denotes a crane body having a steel frame structure, and a guide member 7 having a U-shaped cross section is fixed between brackets 5 on both sides of the upper end and brackets 6 on both sides of the lower end. The brackets 5, 6 have recesses at one end, and the fixing block 3 fits into this recess, and as shown in detail in FIG. 3, the tip flange of the fixing block 3 is The guide member 7
It fits between both flanges. That is, the crane main body 4 is restricted in its movement in the front, back, left and right directions by the fixed block 3, and is only allowed to move in the up and down direction. As shown in detail in FIG. 4, the guide member 7 is connected to the steel frame 8 of the crane body 4 by a number of beams 15, and the crane body 4 passes through the bracket 5 and the fixed block 3. Pin 9 as an example of a fixing member
It is fixed to the fixed block 3 by. A derrick crane 10 is mounted on the crane main body 4, and the other end of the wire rope 13 is fixed to the lifting support member 2 and wound around the pulleys 11 and 12. A winding device 14 is installed to take up the material. The fixed blocks 3 are provided at a pitch that is approximately half the length of the guide member 7.

Next, we will explain the crane hoisting work. First, the fixing block 3 shown in phantom lines in FIG. 1 is removed and attached to the block 1a at the upper end of the already constructed part of the tower-like structure 1. This completes the work of replacing the fixed block 3. Next, the pin 9 fixing the crane body 4 is removed, and the wire rope 13 is wound up by the winding device 14. As a result, the crane body 4 rises, but since each guide member 7 is always engaged with at least two fixed blocks 3, the crane body 4 rises smoothly along the direction in which the fixed blocks 3 are arranged side by side. do. When the upper bracket 5 of the crane main body 4 reaches the position of the uppermost fixed block 3, the crane main body 4 is stopped and the pin 9 is attached to the upper and lower brackets 5 and 6.
is inserted to fix the crane main body 4 to the fixing block 3. In this way, the crane hoisting work is completed. After that, the lifting support member 2 is lifted up by the derrick crane 10 as shown in the imaginary line in Figure 1, another new block is constructed on top of the block 1a at the upper end of the tower-like structure 1, and the crane is lifted up again. Then, following the same procedure, the tower-like structure 1
is constructed one block at a time.

As explained above, according to the crane for erecting a tower-like structure according to the present invention, the crane body is provided with a guide member that engages with the fixing block for fixing the crane body, and the crane body is fixed using the fixing block. Since it is guided, there is no need to provide a guide rail as in the conventional case, which is extremely economical. Furthermore, the fixed block is smaller and lighter than conventional guide rails, and can be easily replaced, so that lifting the crane can be carried out easily and quickly.

Moreover, to raise the crane body, it is only necessary to wind up the cable wound between the crane body and the lifting support member using the winding device.
It becomes very easy.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic front view of the main parts, Fig. 2 is a schematic sectional view taken along the - line in Fig. 1, and Fig. 3 is a diagram showing the relationship between the fixed block and the guide member. FIG. 4 is an enlarged schematic plan view of the vicinity of the joint, and FIG. 4 is an enlarged schematic front view of the vicinity of the joint between the fixed block and the upper bracket of the crane body. 1... Tower-like structure, 3... Fixed block, 4...
... Crane body, 7 ... Guide member, 9 ... Pin (fixing member), 10 ... Derrick crane.

Claims (1)

[Scope of utility model registration request] Fixing blocks that are removably attached to the outer surface of the tower-like structure at appropriate intervals in the vertical direction are provided, and the crane body on which the derrick crane is mounted is provided with fixing blocks having a length that spans at least three of the fixing blocks. a guide member that engages in a vertically movable manner; a fixing member that temporarily fixes the crane body to the fixing block; and a fixing member that is detachably attached to the upper end of a tower-like structure for raising the crane body. 1. A crane for erecting a tower-like structure, comprising a winding device that moves a crane main body in the vertical direction by winding up a rope wound between a support member for raising a tower.