JPS6056793A - Climbing crane for assembling steel tower - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a climbing crane used for assembling steel towers, particularly small and medium-sized steel towers. The development of climbing cranes for industrial use has brought great benefits in shortening construction times and improving safety, but when using these climbing cranes for assembling small and medium-sized steel towers, the large scale of the machine makes it difficult to use them efficiently. descend. It is often constructed using conventional construction methods such as the metal rod method as shown in Figure 1 or the Guidelic method as shown in Figure 2.

The one shown in Figure 1 uses a part of the steel tower post material P,
It is a simple derrick that uses a jib 1 and a winch (not shown) on the ground, and the jib 1 can be rotated manually, and it is necessary to take the pack tension wire 2 from the ground.

In the case of such a lane, the equipment is simple and lightweight, so
Although the equipment cost is reduced, the following problems may occur.

■ Lifting jib 1'J+' Since it is attached to the post material P of the steel tower, the working range is limited and it is inconvenient to use.

■ Workability is poor because turning etc. are done manually.

■ Barafuchi/John wire 2 is required, but if the tower is high, installation is time consuming. There may also be site restrictions.

■ It takes time to set up the jib when climbing.

■ It is not equipped with safety devices such as overload prevention.

The one shown in Figure 2 is a square 3 erected in the center of the steel tower, a guideric crane 4 is placed on top of the mast 3 supported by a horizontal support device 6, and the mast is raised by a mast lifting device 5. A steel tower? Although this method was designed to improve the construction efficiency of steel towers, the equipment was large-scale and was not efficient for constructing small- to medium-sized steel towers.

Therefore, it is desired to develop a crane specifically for assembling small and medium-sized steel towers.

(Purpose of the Invention) This invention was proposed in view of the above circumstances, and its purpose is to provide a climbing crane that is small, lightweight, inexpensive, and has improved safety and operability. .

(Structure of the Invention) A climbing crane for assembling a steel tower according to the present invention is a climbing crane that constructs a steel tower while climbing using a lifting rail installed at the center of one side of the tower as a guide, and includes a jib crane and a jib crane. A mast of a predetermined length hangs vertically from the base of the tower, and a pair of vertical support beams whose ends are detachable from the tower post material, one is fixed to the mast and the other is attached to the mast so that it can be raised and lowered. The jib crane is also provided with an elevating device that moves these horizontal support beams relative to each other in the vertical direction, and the pair of horizontal support beams are raised alternately by the elevating device to raise the jib crane.

(Example) The present invention will be described below based on illustrated embodiments.

As shown in FIG. 3, the climbing crane can be raised and lowered by being guided by a lifting rail 10 erected at the center of one side of the constructed steel tower. A mast 12 of a predetermined length, horizontal support beams 13 and 14 attached to the mast 12 in a pair above and below, and these horizontal support beams 13.1.
4 and a safety support device 16.

The jib crane 11 has a swing device 17, a mechanical device 18 for luffing and hoisting, and a jib 19, and further includes an angle adjustment device 2 so as to be able to swing horizontally with respect to the slope of the side of the tower.
0.

The horizontal support beams 13, 14 are attached to the mast 12 via beam bases 21.22, the upper horizontal support beam 13 is fixed to the top of the mast 12, and the lower horizontal support beam 14 is attached to the mast 12 as a guide. It is said to be able to rise and fall freely. Furthermore, the horizontal support beams 13 and 14 have band-type support metal fittings 23 at their ends, which allow them to be removably fixed to the steel oak post material P and to be expandable and contractible to accommodate changes in the width of the steel tower. It is attached to the beam base 21.22. Therefore, the horizontal support beams 13, 14 each consist of two members:
As shown in FIGS. 3 and 4, they may be arranged alternately in the horizontal direction, or as shown in FIGS. 5 and 7, they may be arranged alternately in the vertical direction. In addition, the lifting rail 10
A guide roller 24 rolling on the beam base 21.22 is attached to the beam base 21.22.

The lifting device 15 is a device that moves the horizontal support beams 13 and 14 in a so-called scale-taking manner, and includes a lifting device 15A that lifts and lowers the lower horizontal support beam 14, and a lifting device that lifts and lowers the mast 12, that is, the upper horizontal support beam 13. It consists of 15B.

The lifting device 15A includes a winch 25A fixed to a lower beam base 22 and a pair of pulleys 2 attached to the beam base 22.
6A, 26A, a pair of pulleys 27A, 28A attached to the steel tower post material P, and a wire rope 29A of the winch 25A. This wire rope 29A is wound around pulleys 27A, 26A, 26A, and 28A in order from the winch 25, and the tip is fixed to the beam base 22. By winding up and lowering the wire rope 29A by the winch 25A, , the lower horizontal support beam 14 will move up and down.

The lifting device 15B is similar to the lifting device 15A, but pulleys 27B and 28B are attached to the lower end of the mast 12, and only one pulley 26B is required, so that the mast 12, that is, the upper horizontal support beam 13 and The jib crane 11 moves up and down.

As shown in FIGS. 6 and 7, the safety support device 16 includes a safety support wire rope 3o that connects the lower beam base 22 and the upper tower post material P, and a safety support wire rope 3o that connects the beam base 21.22 and the post material P. Horizontal support wire rope 31.32 horizontally connecting
It consists of The safety support wire rope 30 supports the crane's own weight and transmits it to the post material P, and the horizontal support wire ropes 31 and 32 are connected to the horizontal support beams 13 and 14.
The compressive force exerted on these cranes is effectively transmitted to the tower.

In the above configuration, since the lower horizontal support beam 14 can move up and down along the mast 12, the support beam 13.1
4 can be arbitrarily selected, and as shown in FIG. 7, the support beams 13, 14 can be located near the attachment points of the steel tower's place material. In this state, the crane is firmly supported by the steel tower by wire ropes 30, 31, 32, etc., and the post material P above the jib crane 1 is assembled.

Then, as shown in FIG. 8, the jib crane 11)
Move the pulleys 27A and 28A to the top of the assembled post material P, reposition the wire rope 29A, stand the jib 19 upright, and disconnect the end of the lower horizontal support beam 14.
The horizontal support beam 14 is lifted and lowered by the lifting device 15A onto the rail 1o.
rise along.

Subsequently, as shown in Fig. 9, after fixing the lower horizontal support beam 14 to the post material P and tensioning the wire rope 30°32, the upper horizontal support beam 13 is released from the post material P, and it is lifted and lowered. Device 15B mast 12 or horizontal support beam 13
And the jib crane 11 is raised along the lifting rail 10.

Next, as shown in FIG. 10, the upper horizontal support beam 13
is fixed to the post material P, the wire rope 31 is stretched, and the upper post material P is assembled.

The steel tower will be constructed by repeating the steps above in order. When descending, the operation is opposite to that when ascending.

Next, Fig. 11 shows a system in which the upper and lower horizontal support beams are not telescopic, but are fixed beams 13' and 14', and the band-type support hardware 23 is movable in the horizontal direction. be. As shown in FIGS. 12 and 13, the band type support hardware 23 is engaged with the horizontal support beam 13' or 14' and is slidable in the axial direction, and is attached to nine sliding support hardware 33. This sliding support metal fitting 33 is moved according to the width of the steel tower and fixed with a fixing metal fitting 34.

Further, a ring-shaped fall prevention hardware 35 is attached to the steel tower post material P in advance at a predetermined position. The fall prevention hardware 35 is not limited to a ring shape, but may be a lip, a protrusion, or the like.

Note that the upper horizontal support beam 13 is fixed and the lower horizontal support beam 14 is raised and lowered, but in contrast, the lower horizontal support beam 14 is fixed and the upper horizontal support beam 13 is raised and lowered. You can do it like this.

Also, both the upper and lower horizontal support beams 13 and 14 are attached to the mast 1.
2, overflowing the elevating rail 10 and raising and lowering it by a lifting device.

Further, the elevating device is composed of a winch, a pulley, and a wire quad, but is not limited thereto.
Any device may be used as long as it can relatively move the device 14 in the vertical direction, such as a rack and pinion system, a fluid pressure cylinder, etc.

(Effects of the Invention) Since the present invention has the above-described configuration, it has the following effects.

■ Since it is installed on the side of the steel tower, the working radius is small and there are no restrictions on the working range, making it easy to work.

■ Since the spacing between the upper and lower horizontal support beams can be adjusted, there are many restrictions on the number of steel towers that can be constructed.

(?) The force generated by cranes is effectively transmitted to the steel tower.

■ Easily adapts to changes in the width of the steel tower.

■ The climbing method is simple and safe, and since climbing is supported by a steel tower, the device is lightweight and inexpensive.

[Brief explanation of the drawing]

Figures 1 and 2 are schematic diagrams showing a conventional steel tower construction method, Figure 3 is a perspective view showing a climbing crane according to the present invention, and Figure 4 is a schematic plan view showing the base of a horizontal support beam. , FIG. 5 is a schematic plan view showing another aspect, FIG. 6 is a schematic diagram showing the lifting device, FIGS. 7, 8, 9,
Fig. 10 is a front view showing the raising process in order, Fig. 11 is a perspective view showing another aspect of the horizontal support beam, Fig. 12, Fig. 1
FIG. 3 is a partially enlarged sectional view and a partially enlarged plan view. 1. Jib, 2. Back tension wire. 3...Mast, 4...Guidelic crane, 5...Mast lifting device, 6...Horizontal support device, 10...Elevating rail, 11...Schiff crane, 12...Mast, 13.14...Horizontal support Beam, 15. Lifting device, 16. Safety support device, 17.
・Swivel device, 18・・Machine alignment device, 19・・Jib, 20・・Angle adjustment device, 21, 22°° beam base 123・
・Band type support hardware, 24...Guide roller, 25...Winch, 26.27
．． 28. Φ Shoulder wheel, 29.. Wire rope, 30.. Safety support wire rope, 31. 32.. Horizontal support wire rope, 33.. Sliding support hardware, 34.. Fixing hardware, 35.. Fall prevention hardware. Figure 1 Figure 2 Figure O 1d, 1n Figure 5 Figure 7 Figure 8 Figure 9 Figure 10 Procedure amendment ■Kun 1958 Japanese Patent Application No. 164343 2 Title of invention Climbing crane for steel tower assembly 3 Relationship with the case of the person making the amendment Patent applicant address Himeno Co., Ltd. Composition name Tomoe Gumi Giken Co., Ltd. 4, Agent 5 Date of amendment order Voluntary amendment (1) Specification, page 10, lines 14 to 16 is corrected as follows. ``■ Climbing cranes can be installed on the side of the steel tower, so the structural members inside the tower (diagonal members, flat members, etc.)
All can be installed. Conventional climbing cranes are attached to the inner surface of the steel tower and cannot attach all of the structural members. ”

Claims (1)

[Claims] (1) A climbing crane that builds a steel tower while climbing using a lifting rail erected at the center of one side of the tower as a guide, which includes a jib crane and a mast of a predetermined length hung vertically from the base of the jib crane. , a pair of vertical support beams whose ends are detachable from the steel tower post material, one of which is fixed to the mast and the other is attached to the mast so that it can be raised and lowered, and these horizontal support beams are moved relative to each other in the vertical direction. A climbing crane for assembling steel towers characterized by being equipped with a lifting device.