JPH079885Y2 - Swing crane temporarily installed inside a cylindrical structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a swing crane that is temporarily installed inside a cylindrical structure when it is constructed.

(Prior Art) Cylindrical structures, such as coal silos in thermal power plants, have stainless steel on the surface of concrete for laying a conveyor at the bottom for unloading coal or for gravity feeding coal to the conveyor. It is necessary to perform construction such as arranging mountain-shaped ridges with steel plates lined up vertically and horizontally.To move the materials used for this construction to the necessary places, conventionally, a large crane vehicle was installed outside the cylindrical structure. It was used by being placed stationary.

(Problems to be solved by the invention) If the above-mentioned large crane vehicle is used for a long period of time until the end of construction, enormous cost is required, which causes a rise in construction cost. In addition, a crane operator and a cylindrical structure are required for use. There was a problem that the internal construction worker was a different person and it was difficult to communicate between them.

In order to solve the above problems, this invention can be used by disassembling a swing crane, bringing it inside a cylindrical structure, temporarily assembling it, and disassembling it after the completion of construction to use it for the next construction. It is an object of the present invention to provide a swing crane that is temporarily installed inside a cylindrical structure that is easy to use.

(Means for Solving the Problems) The present invention for attaining the above-mentioned object is to provide a divisible main pillar installed upright at the circular center of a cylindrical structure and an inner circumference of the cylindrical structure, Attached at a plurality of divided positions of substantially the same height as the top of the main pillar, a plurality of turning circuit brackets, and a plurality of linear turning circuit dividing members having both ends attached across the turning circuit bracket are continuously formed, A turning circuit having a wide flat running surface formed in a regular polygonal shape along the inner circumference of the cylindrical structure, and one end of a turning trolley rotatably supported at the top of the main pillar and attached at the other end. A slewing beam extending in a radial direction with a wheel abutting on the upper surface of the slewing circuit, an electric hoist suspended movably on the slewing beam, an apex of the main column, and the cylindrical structure A plurality of anti-vibration wires that radially connect to the inner circumference It is a swing crane that is made up of, and is configured to be detachable from each component and is temporarily installed inside a cylindrical structure.

(Operation) This slewing crane is used for construction work inside a cylindrical structure, and has a decomposable structure that assembles and constructs small members. The metal fittings are brought in and assembled, and the mounting metal fittings for mounting the turning circuit bracket and the locking metal fittings for locking the ends of the vibration isolating wires are previously embedded in the inner circumference of the cylindrical structure.

When the work is completed, it is disassembled and taken out for use in the next work.

(Embodiment) The present invention will be described in detail below with reference to the embodiment shown in the drawings. FIG. 1 is a side view showing a main part of a swing crane according to the present invention in a state of being used in the construction of a coal silo,
Fig. 2 is also a plan view, in which (1) is a cylindrical structure, and phantom lines (1a) are mountain-shaped ridges made of concrete for gravity falling coal built inside. , A stainless steel plate (1b) is attached to the surface to make the coal slippery.

This stainless steel plate (1b) is stretched before pouring concrete and also serves as a concrete form. The main application of the swing crane in this embodiment is to stretch this stainless steel plate.

(2) is the main pillar, which is made of steel pipe with four joints and the first step is short.
The third stage is long, the third stage is slightly long, and the fourth stage is the shortest to rotatably support the base end of the turning beam, which will be described later, and each stage is flanged.

The lower end of the main pillar (2) is fixed to the center of the floor surface of the cylindrical structure (1) by anchor bolts and installed upright.

A reinforcing brace (2a) consisting of a filament is stretched from near the top to the lower end at four equally divided positions on a concentric circle slightly away from the outer circumference of the main pillar (2) to reinforce buckling. Reference numeral (2b) is a support arm for horizontally supporting the reinforcing brace (2a), which protrudes horizontally from the main pillar (2).

(3) is a turning circuit bracket, which is made of H-section steel cut into a predetermined length as shown in FIGS. 4, 5, and 6, and is a main part of the peripheral wall of the cylindrical structure (1). One end is attached with a bolt (5) to the mounting metal fittings (4) embedded at 30 equally divided positions on the circumference of the inner circumference having almost the same height as the top of the pillar (2), and the inner circumference is It is projected at 30 places.

(6) is a rotating circuit, and adjacent rotating circuit brackets (3),
(3) A top plate (6a) wider than this square pipe is attached to the upper surface of the square pipe having a length equal to the distance between them in order to widen the road surface width, and projects to both sides in the width direction below both ends. The mounting ear portions (6b) are fixed to each other, and the thirty linear winding circuit dividing members are passed over the adjacent rotating circuit brackets (3) and (3), respectively, and the mounting ear portions (6a) at both ends are attached. Attached to the rotating circuit brackets (3), (3) with bolts (7), the positive 30 along the inner circumference of the cylindrical structure (1).
It is formed in a rectangular shape.

Reference numeral (8) is a turning beam, and a hoist orbit (10) made of I-shaped steel for suspending an electric hoist (9) for traveling is attached to the lower surface of the tubular main body, and one end of the main body is attached. Is rotatably supported on the top of the main pillar (2), an electric trolley (11) is attached to the other end, and a wheel (11b) driven by a swing motor (11a) of this electric trolley has a turning circuit (6). The other end of the turning beam (8) moves on the turning circuit (6) by being driven on the turning trolley (11),
A swirl beam (8) swivels in the cylindrical structure (1) starting from the top of the main column (2).

Reference numeral (12) is a power supply cable, which is provided so as to be capable of expanding and contracting along the swivel beam (8), and passes through a power supply trolley duct (13) provided at the top of the main pillar (2), and then an electric hoist (9) and a swing electric motor (11a). ).

(14) is a hand switch, which is a 6-point push button switch attached to the lower end of the cord that hangs from the electric hoist (9) for lifting and lowering the load of the electric hoist (9) and traveling along the hoist track (10). , For turning the turning beam (8) by driving the turning trolley (11) from the floor.

Note that this driving operation may be performed by wireless remote operation in addition to the hand switch (14).

(15) is an anti-vibration wire, which is embedded in the apex of the main pillar (2) and the mounting metal fitting (4) on the inner circumference of the cylindrical structure (1) at a position equidistantly divided into 10 parts of the circumference. It is stretched with a turnpuckle (15a) between it and (16) to prevent the main pillar (2) from swaying and make it stand upright.

The main pillar (2), the turning circuit bracket (3), the turning circuit (6), the swing beam (8), and the electric hoist (9).
The anti-vibration wire (15) is constructed so that it can be disassembled, and is removed for the next use after the completion of construction. However, since the second step of the main pillar (2) is embedded in the chevron ridge (1a) in this embodiment, only the first step, the third step, and the fourth step can be removed. Is to make a new second stage and replenish it.

In this embodiment, the rotation circuit (6) is divided into 30 equal parts,
Although the vibration-proof wire (15) is shown as being provided at equally divided positions on the circumference 10, it is not limited to this number and may be another number.

(Effect of the Invention) According to the swing crane temporarily installed inside the cylindrical structure according to the present invention described above, the individual members become small due to the disassembling and assembling type, and the small entrance and exit of the cylindrical structure Since it can be put in and taken out, and can be easily assembled and used inside, the operation is more direct compared to the conventional joint work where the crane operator and the construction worker are separate when using a large crane vehicle from the outside. Therefore, only one worker is required, and the maneuverability is enhanced, so that the working efficiency can be significantly increased, and it is economical because it can be used many times.

In addition, since the tip of the swivel beam travels on a wide and wide turning circuit, it is possible to travel without trouble even if the main column is slightly off the circular center. Compared to the construction required, it does not require so much accuracy, so it is easy to install and can be turned smoothly, and it is not necessary to make an accurate circular shape in manufacturing. Since it can be connected to form a regular polygon, it is easy and inexpensive to install.

[Brief description of drawings]

FIG. 1 is a side view of an essential part showing an embodiment of a swing crane of the present invention in a state of use in the construction of a coal silo. FIG. 2 is a plan view of the main part of the same. FIG. 3 is an end view of the swirling beam taken along the line AA in FIG. FIG. 4 is an enlarged detailed view of part B in FIG. 2 showing a state in which the turning circuit is attached to the turning circuit bracket. FIG. 5 is a side view of FIG. FIG. 6 is a front view of FIG. 1 ... Cylindrical structure, 2 ... Main column, 3 ... Turning circuit bracket 6 ... Turning circuit, 8 ... Swivel beam, 9 ... Electric hoist, 10 ... Hoist orbit, 11 ... Swivel trolley, 15 ... … Vibration wire

Claims (1)

[Scope of utility model registration request] 1. Upright installation in the circular center of a cylindrical construct,
One main pillar that can be divided, a plurality of turning circuit brackets that are attached to the inner circumference of the cylindrical structure at a plurality of dividing positions at approximately the same height as the top of the main pillar, and a plurality of turning circuit brackets. And a plurality of straight circular circuit dividing members with both ends attached to form a regular polygonal shape along the inner circumference of the cylindrical structure, which has a wide flat running surface, and one end of which is described above. A wheel of a turning trolley, which is rotatably supported on the top of the main pillar and is attached to the other end, is brought into contact with the upper surface of the above-mentioned turning circuit, and a turning beam extending in the radial direction and a turning beam are movably suspended on the turning beam. An electric hoist to be suspended, a plurality of vibration isolation wires radially connecting the apex of the main pillar and the inner circumference of the cylindrical structure, and each component is configured to be removable. , A swing crane temporarily installed inside a cylindrical structure.