JPH04109987U - Climbing crane lower support - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work of sequentially reinstalling climbing cranes to upper floors as steel construction progresses. [Configuration] Lower support stand at the lower end of the mast 5 (6, 7, 8,
9) A manual winch 11 was attached to the bolt 10 for fixing the receiving frame 3 to the bolt 10 for hanging the bolt 10 and inserting and removing it into the hole.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is related to a climbing crane used for steel frame construction of high-rise buildings. In particular, as steel construction progresses, the lower support will be used to gradually move the crane upwards. Regarding the stand.

0002

[Conventional technology]

For example, Special Publication No. 50-39309 (B66C 23/32) and Utility Model Publication No. 1-15 As seen in Publication No. 2990, steel frame work for high-rise buildings generally requires the following: A climbing crane is used. This kind of climbing crane is A mast that is placed vertically and can be moved along this mast as a guide. It is equipped with a crane main body base to be combined. Crane main body base and mast are connected by a climbing drive means such as a jack mechanism. Also, mass At the bottom end of the crane, there is a lower support platform for supporting the entire crane on the steel hierarchical structure. It is integrated.

0003 The lower support at the lower end of the mast is placed and fixed on a support frame that spans the steel beam. determined. In this state, operate the climbing drive means and move the crane main body base. Can be raised along the mast. Adjust the raised crane base as appropriate. While the mast is placed on a steel beam via a supporting frame, the lower support stand at the lower end of the mast is By removing the support frame and operating the climbing drive means, the crane main The mast can be pulled upwards relative to the body base. Also, by some means The receiving frame of the lower support base is carried up to the upper floor and received on the reinforcing beam as specified. Hang the frame. Place the lower support of the mast that has been raised upwards on the receiving frame. Place it on top of the frame and fix it. In this way, as steel construction progresses, the entire crane is They will be installed upwards one after another.

0004

[Problem that the idea aims to solve] As mentioned above, each time the mast is relocated to an upper floor, the lower support and support frame must be removed. Remove the fixing from the lower support base and the receiving frame again at the upper floor part. Repeat this process. The receiving frame is made of H-shaped steel, etc., and the legs of the lower support stand The parts are placed on top of it, and both are secured using long bolts. Due to this bolt Installation and removal work is done manually, but there are multiple bolted locations. Moreover, since the bolts are quite long, it is difficult for workers to install and remove the bolts. It was always hard work.

[0005] This idea was devised in view of the conventional problems mentioned above, and its purpose was to Easily fix and unfasten the bottom support at the bottom end with long bolts. The aim is to make it possible to do so.

[0006]

[Means to solve the problem]

Therefore, in this design, the lower support at the lower end of the mast is placed either directly on the steel beam or on another It is mounted through a receiving frame and is secured by a long bolt inserted vertically into a designated hole. For structures in which the support base is fixed to a steel beam or support frame, the front At the upper part of the bolt installation position, hang the bolt from a rope and pull it out into the hole. A winch mechanism has been added for insertion.

[0007]

[Effect]

When fixing or removing the lower support with the bolts, , the bolt is suspended from the rope by the winch mechanism attached to the lower support base. It can be inserted into and removed from the hole in the open state. Installation of multiple long and heavy bolts During removal, each bolt is suspended from the rope of the winch mechanism, so this There is no risk of dropping the product, making the work much easier.

[0008]

【Example】

Figures 1 and 2 show the lower support base of the climbing crane according to the present invention, which has a steel frame hierarchical structure. It is shown fixed to the body. In both figures, 1 and 2 are the steel frames of the steel hierarchical structure. They are columns and steel beams. 3 is a receiving frame made of H-shaped steel, which is connected between the steel beams 2 and 2. It is fixed by hanging it over. A hanging scaffold 4 is attached to the receiving frame 3. Scaffold 4 can be used to perform the aforementioned bolting and removal work. .

[0009] 5 shown in Fig. 2 is the mast of the climbing crane, and the upper side of this mast 5 A crane body base (not shown) is combined with the crane body base. Below this mast 5 The following structure integrally provided at the end is the lower support.

0010 The basic structure of the lower support base is a drum-shaped fixed base 6 fixed to the lower end of the mast 5. and four support legs 8 attached radially around the fixed base 6. Fixed There are four boss parts 7 around the pedestal 6, and each support leg 8 has an axis perpendicular to the boss part 7. It is rotatably mounted on the shaft, and can be rotated horizontally around its axis. Ru. When pulling the mast 5 upward, make sure that the support legs 8 do not hit the steel beams 2, etc. Thus, the support leg 8 can be rotated in an appropriate direction.

[0011] Fixing members 9 are provided protrudingly on both sides of the tip portion of each support leg 8. In the fixed member 9 A hole is formed that passes through the top and bottom, and a long bolt 10 is inserted into the hole as shown in Fig. 2. Fasten the tip of the support leg 8 and the receiving frame 8 to secure the lower support base. It is designed to be set.

0012 In this embodiment, the bolt 10 is inserted into and removed from the hole in the fixing member 9 from above. To facilitate work, a manual winch 11 is installed on the upper surface of each support leg 8 from the base. is attached. The manual winch 11 has a support column 11a that is erected almost vertically, and a support column 11a. The pulley 11b attached to the upper end of the pillar 11a and the back of the middle part of the pillar 11a It consists of a winding drum 11c with a manual winding handle attached to the side. Wind it on the winding drum 11c. Pull out the suspended rope, make a U-turn using pulley 11b, and attach the rope to the end of the rope. Suspend bolt 10. In this state, if you wind the rope with the manual winch 11, When the bolt 10 is pulled up and the rope is unwound, the bolt 10 is lowered. bolt Perform this operation during the installation/removal work in step 10.

[0013]

[Effect of the idea]

In this idea, a winch mechanism is installed on the lower support base at the lower end of the mast, and the lower support base is bolted directly onto a steel beam or through another support frame; When removing the rope and releasing the lower support, the rope of the winch mechanism The structure is such that the bolt can be inserted and removed from the mounting hole while the bolt is suspended. This eliminates the need to hold bolts by hand when installing and removing bolts, making it easier to install and remove bolts. Therefore, there was no risk of accidentally dropping the bolt, and the bolt was pulled out of the hole again. It can also be inserted into holes by operating the winch mechanism. Therefore Fixing and releasing the lower support platform when reinstalling the climbing crane to the upper floor. The task becomes much easier than before.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a climbing crane lower support base according to an embodiment of the present invention attached to a steel hierarchical structure;

FIG. 2 is a plan view of the state shown in FIG. 1;

[Explanation of symbols]

2 Steel beam 3 Receiving frame 5 Mast 6 Fixed pedestal 8 Support legs 10 volts 11 Manual winch

Claims (1)

[Scope of utility model registration request] Claim 1: A vertically disposed mast, a crane main body base movable along the mast and placed on a steel hierarchical structure, and a crane body base that connects the main body base and the mast so that both a climbing drive means for relatively moving up and down the mast; and a lower support that is integrally provided at the lower end of the mast and is removably fixed directly to the steel beam or via another support frame to support the entire crane. In the climbing crane equipped with a platform, the lower support platform is fixed to the steel beam or the support frame by long bolts inserted vertically into predetermined holes, and the bolts are attached to the climbing crane. A lower support stand for a climbing crane, characterized in that an upper part thereof is equipped with a winch mechanism for suspending the bolt from a rope and inserting it into and removing it from the hole.