JPH10273289A - Cane suspension type power hoisting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suspend a suspended load such as a long steel assembly or the like in a state adjusted to an optional angle so as to permit inversion by individually controlling a plurality of chain winding devices installed in the lower part of a main body frame. SOLUTION: A hoisting device is used while being suspended by a hook 19 attached to the tip of a jib wire 18. In a beam-like main body frame 2, both end parts of a suspension chain 1 are surely attached to chain hooking holes 3 and 4. A control box 5 is attached to the center part of the main body frame 2, and a power motor for chain winding devices 6 and 7 is controlled so as to be rotated forward/backward. The winding devices 6 and 7 are attached to the symmetrical positions of the main body frame 2, but for preventing the inclining of the main body frame 2, one of attaching brackets 21 and 22 is fixed, and the upper part of the other bracket is supported in bracket attaching holes 12 and 13 so as to be rotated in a fixed range. Also, the winding devices 6 and 7 have housing cases 15 and 16 for housing the wound chains 8 and 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hoist apparatus for moving a suspended load, which is used while being suspended from a hook at the tip of a jib wire of a jib crane. In particular, the present invention relates to an electric hoist device capable of suspending or reversing a suspended load such as a long or flat steel frame or a plate at an arbitrary angle.

[0002]

2. Description of the Related Art Members such as steel frames and panels used for assembling structures such as buildings and steel towers are usually lifted or moved to a required place using a crane. Here, the crane superimposes or extends a steel crane structure that can be extended and contracted in multiple stages, changes the crane's rising angle, and sends out a jig wire with a hook attached to its tip. The lifting and lifting of the suspended load is performed by winding.

Accordingly, when a long member such as a steel frame is moved to a predetermined location with a predetermined angle and is to be installed and mounted, the length of each of the hanging wires tied to both ends of the member is determined. It is necessary to hook and move the wire on the hook of the crane in a state where the height is adjusted in advance, or suspend only one end of the member in a hanging state directly with the hook of the crane, and It has been necessary for an operator, who has arranged the member at the installation location, to attach it to a predetermined location while manually pulling the member to adjust the inclination angle of the outer member manually.

[0004]

As described above, since the work of mounting and adjusting such heavy members is ultimately performed by the manual work of the operator, there are many hazards to the work. And required a lot of time for installation.

In particular, when assembling a power transmission tower structure, are the four main legs assembled in a state in which each is inclined inward at a predetermined angle so as to form a quadrangular pyramid instead of an upright state? Since it is necessary to attach the members constituting the main leg, in the conventional method of hanging both ends of the member by a crane at two points, since the attachment angle of the members cannot be adjusted, it is extremely difficult to attach the members. It required a lot of time by many workers.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems in the prior art, the present application does not change the function or structure of the prior art crane, but hangs it on a hook at the tip of the crane using the conventional crane. An electric hoist device used in a suspended state, comprising: a main body frame, a suspension chain that is hung at a plurality of positions of the main body frame, and is hung on a hook at a tip of the crane to suspend the main body frame downward. And a plurality of chain winding devices mounted at symmetrical positions on the lower surface of the main body frame, and installed in a downward direction of the main body frame,
Each of the chain winding devices includes a chain having a hook for hanging a load at a tip thereof, an electric motor for feeding or winding the chain, and chain storage means for storing the wound chain, A crane-suspended electric hoist device capable of individually controlling a plurality of the chain winding devices so that a suspended load hung on the load suspending hook can be held in parallel, inverted, and the suspension angle can be freely adjusted. Is provided.

Further, each of the chain winding devices is attached below the main body frame in a state where the suspension angle is free, so that each chain winding device bears a suspension. Even if the weight is unbalanced, the main body frame does not greatly tilt toward the side with the larger burden weight, and secure and stable lifting and moving of the suspended weight is ensured.

Further, in the present application, the number of winding chain devices is selected in accordance with the shape of members mainly handled by the hoist device according to the present invention. For example, if it is a rod-shaped member, it is two winding chain devices, if it is a triangular braided steel member or the like, it is three, if it is a flat member such as a panel, it is three or four. With the use of the winding chain device, it is possible to invert these hanging members in any direction and adjust the angle of the members.

[0009]

As described above, the electric hoist of the present invention is
A conventional crane can be used as it is, and by controlling a plurality of take-up chain devices individually, it is possible to hang a suspended load such as a long or flat steel frame or plate at an arbitrary angle. , Can be inverted. Therefore, it can be said that the present apparatus is capable of exerting the same effect as increasing one crane to the number of take-up chain apparatuses.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the crane suspension type electric hoist of the present invention will be described below with reference to the drawings.

FIG. 1 shows a crane-suspended type electric hoist according to the present invention of the type in which two chain winding devices are mounted. This electric hoist apparatus suspended by a crane is used in a suspended state by a hook 19 attached to a tip of a jib wire 18 of the jib crane. FIG. 2 is a simplified perspective view of the electric hoist device of FIG.

In FIGS. 1 and 2, a beam-shaped main body frame 2 of the present apparatus has chain hook holes 3, 4 for hooking both ends of a hanging chain 1 at upper ends thereof.
Is provided. Both ends of the suspension chain 1 are attached to the chain hook holes 3 and 4 so as not to come off. Since a load of 1/2 of the total weight of the present device's own weight and the maximum hanging load is applied to each of the hanging portions with the hanging chain 1, a reinforcing ring or bracket is attached to both ends of the chain. It is good to hook it to the chain hook holes 3 and 4. Hanging chain 1
A ring 17 is attached to a central portion of the crane to be hooked on a hook 19 at a tip of a jib wire 18 of the crane.

A control box 5 is attached to the center of the main body frame 2. The control box 5 includes a power supply terminal for receiving power supply from the power supply cord 14, a voltage supply terminal for the electric motors of the chain winding devices 6, 7, and various limit switches for controlling the chain winding devices 6, 7. Relays and earth leakage and overcurrent breakers for safety measures are built in. In this embodiment, the power source is 3
A 200V phase is used. Accordingly, the forward and reverse rotation control of the electric motors of the chain winding devices 6 and 7 can be performed by an operation of exchanging any two of the three phases with each other. Use a higher voltage power supply in consideration of the voltage drop in the power cord 14 in consideration of the capacity of the motor, the length of the jig / crane (that is, the length of the power cord 14), etc. However, it is also possible to install a step-down transformer in the control box 5. When it is difficult to supply AC power, a battery is mounted on the main body frame 2 and a DC motor or a DC / DC converter for converting DC power to AC is used.
It is also possible to use an AC motor with an AC inverter.

The chain winding devices 6 and 7 are mounted at symmetrical positions on the lower plane of the main body frame 2 while being suspended from the main body frame 2. At the symmetrical position, both take-up chains 8, 9
This is to prevent the body frame 2 from tilting when the suspension load is applied on average. However, a load is not always applied to both winding chains 8 and 9 on average. When the hanging load is imbalanced applied to both chains 8, 9, the main body frame 2 is inclined in the direction of the heavier-loaded winding device. At this time, when the winding devices 6 and 7 are fixedly attached to the main body frame 2, the winding devices 6 and 7 themselves also tilt with the tilt of the main body frame 2. If the angle of inclination reaches a predetermined angle or more, there is a problem in the control of feeding and winding of the chains 8, 9 from the winding devices 6, 7.

Therefore, each of the chain winding devices 6 and 7 is mounted such that the downward suspension angle of the main body frame 4 is free. For this reason, in this embodiment, the chain winding devices 6 and 7 are fixed to one of the mounting brackets 21 and 22, and the other upper part of the mounting bracket is connected to the bracket mounting holes 12 and
13 is supported so as to be rotatable only within a certain range.

The chain winding devices 6 and 7 have a chain having hooks 10 and 11 at the end thereof, a motor for feeding or winding the chains 10 and 11 to a predetermined required length, and a winding device. And chain storage cases 15, 16 for storing the chains 10, 11. And, by controlling the individual chain winding devices, it is possible to hold the suspended load hung on the load suspending hook in parallel, invert, or adjust the hanging angle thereof arbitrarily. That is. The chains 8 and 9 are formed such that individual chain rings constituting the chains are twisted by a predetermined angle in one direction,
Since they are linked to each other, the chain winding devices 6 and 7 simply take up the chains 8 and 9 and sequentially feed the chains 8 and 9 to the chain storage cases 15 and 16 so that the chains are neatly placed in the chain storage cases 15 and 16. It will be stored.

The operation of the two chain winding devices 6, 7 is controlled by operating a control panel (not shown). The operation panel is usually operated by a crane operator or a worker who installs a hanging member on site. An operation signal transmitted from the operation panel to the control box 5 installed in the main frame of the main body device is transmitted by wire or wirelessly. Therefore, when using a wireless signal, a wireless transmitter such as an FM is connected to the operation panel, and a wireless receiver is connected to the control box 5.

FIG. 3 shows an example of an electric hoist device according to the present invention in which three chain winding devices are mounted.

In this embodiment, as compared with the above-described apparatus in which two chain winding devices are mounted, the length of the main body frame is slightly increased, and three chains are taken from the center of the main body frame 30 and both sides. Winding devices 31 and 3
2, 33 are suspended. Each of the chain winding devices includes a chain having a hook for hanging a load at a tip thereof, an electric motor for feeding or winding the chain to an arbitrary length within a predetermined range, and chain storage means for storing the wound chain. However, each of them can individually control the feeding and winding length of the chain. In this case, the hook at the tip of the chain can be hooked at any three places of the suspended load.

The three chain winding devices 31, 3
The elements 2 and 33 do not necessarily need to be arranged in series as in this example, and may be arranged in a planar shape, for example, at each vertex position of a triangle. In any case, the control panel is arranged at the center of the body frame.

As described above, the 3 mounted on the body frame is
By individually controlling the lengths of the chains fed from the chain take-up devices 31, 32, 33, the assembled steel frames and the flat panels assembled in a flat shape can be adjusted to an arbitrary angle. It can be suspended or inverted, moved to a predetermined location, and pulled down. The easiness of assembling work and the dramatic improvement in safety of a field worker who installs such members have been realized.

FIG. 4 shows an example of an electric hoist apparatus according to the present invention in which four chain winding devices are mounted.

In this embodiment, the body frame 40
Are assembled in a rhombus cross shape, and chain winding devices 41 to 44 are respectively arranged at predetermined positions from the center. As in the above-described example, each of the chain winding devices houses a chain having a hook for hanging a load at the tip thereof, an electric motor for feeding or winding to an arbitrary length within a predetermined range, and a chain that has been wound. And chain storage means, each of which can individually control the feeding and winding lengths of the chain. In this case, the hook at the end of the chain can be hooked at any four places of the suspended load, so that the planar or three-dimensional suspended load can be suspended at an arbitrary angle. By inverting, it is possible to move to a predetermined installation location and pull down. Note that the four chain winding devices 41 to 44 can be arranged at symmetrical apexes of an arbitrary square. The control panel is arranged at the center of the body frame.

As described above, in the electric hoist device of the present invention, a plurality of chain winding devices are installed at substantially symmetrical positions on a straight line or in a plane. However, since the individual chain winding devices do not necessarily bear the hanging load evenly, the main body frame may be inclined. In such a case, if each chain take-up device is fixedly attached to the main body frame, the chain take-up device itself is also inclined with the inclination of the main body frame, so that the chain can be fed or taken up. It may cause trouble. In order to prevent such a situation, in the present invention,
The individual chain winding devices are mounted below the main body frame so that the suspension angle is free.

Next, a specific application example of the crane suspension type electric hoist device according to the present invention will be described.

FIGS. 5 and 6 show an electric hoist device equipped with two chain hoisting devices 6 and 7 in a mountainous area, and lift a cylindrical rebar cage in a parallel state, and lift it vertically in the air. A usage example in which the body is turned upside down and installed in an excavation hole provided in a predetermined location is shown.

In FIG. 5, the electric hoist apparatus of the present invention suspended on a hook at the tip of a jib wire unreeled from a jib crane has two chain winding devices 6 and 7, one of which is a chain winding device. The chain hook unreeled from the take-up device 6 is attached to one end of a reinforcing bar basket, which is a suspended load, and the chain hook unreeled from the other chain take-up device 7 is attached to a top lifting hanger and two sling wires. And is hung on the other end of the rebar cage through a sling for sling. As shown in FIG.
In order to stabilize the reinforced basket when it is lifted, a wire may be hooked on one end of the reinforced basket and the wire may be hung on a chain hook from the chain winding device 6. In this way, the rebar cage moored to the two chain hooks is lifted by the jib crane in a parallel state by individually controlling the chain length from the two chain winding devices.

Next, FIG. 6 shows that the rebar basket thus lifted up takes up the chain from the chain take-up device 7 and unwinds the chain from the chain take-up device 6, thereby suspending the chain in the air. It shows that it is possible to vertically invert one end of the reinforced basket of the load so that one end is on the lower side and the other end is on the upper side, so that it can be dropped vertically into a predetermined excavation hole.

FIG. 7 shows three chain winding devices 3
An example of using a motor-driven hoist device of the present invention on which 1, 2, and 33 are mounted to tilt or invert a flat steel frame at an arbitrary tilt angle will be described. As shown in the figure, three chain hooks are attached to the three-dimensional hanging load.
By mooring to a point and controlling the unwinding or winding length of each chain, it is possible to control not only the inclination angle but also the inclination direction of the planar suspended load.

FIG. 8 shows three chain winding devices 3
An example in which a three-dimensional steel frame is adjusted and controlled to an arbitrary inclination angle and direction in the air using the electric hoist device of the present invention equipped with 1, 32, and 33 is shown.

[0031]

As described above, the crane-suspended electric hoist device according to the present invention controls the plurality of chain winding devices individually, so that the suspended load hung on the load suspending hook is controlled. , Parallel adjustment, and arbitrary adjustment of the hanging angle thereof.

Further, each of the chain winding devices can be attached in a downward direction of the main body frame so that the suspension angle thereof is free, so that each of the chain winding devices bears a suspension. Even if the weight is unbalanced, the main body frame does not greatly tilt toward the side with the larger burden weight, and secure and stable lifting and moving of the suspended weight is ensured.

Further, in terms of the shape of the members mainly handled by the hoist device of the present invention, 2, 3, or 4 winding chain devices are selected. For example, if the hoist device is a rod-shaped member, two winding chain devices are used. And three or four take-up chain devices if the member is a triangular braided steel member or a flat member such as a panel. Can be turned in any direction, the angle of the member can be adjusted, and the direction can be adjusted.

As described above, the electric hoist device of the present invention produces the same effect as that when one crane is substantially increased to the number of take-up chain devices.

[Brief description of the drawings]

FIG. 1 shows an example of an electric hoist device equipped with two chain winding devices according to the present invention.

FIG. 2 shows a perspective view of the electric hoist device shown in FIG.

FIG. 3 shows an example of an electric hoist device equipped with three chain winding devices.

FIG. 4 shows an example of an electric hoist device equipped with four chain winding devices.

FIG. 5 shows an example of use when hoisting a cylindrical rebar basket in a parallel state using an electric hoist device equipped with two chain hoisting devices.

FIG. 6 shows an example of use in which a suspended load suspended in a parallel state in FIG. 5 is installed in a digging hole provided at a predetermined location by being inverted in a vertical direction.

FIG. 7 shows an example of using a motor-driven hoist device equipped with three chain winding devices to incline or reverse a steel frame assembled in a plane at an arbitrary inclination angle.

FIG. 8 shows a use example in which a three-dimensionally assembled steel frame is tilted or inverted at an arbitrary tilt angle using an electric hoist device equipped with three chain winding devices.

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[Procedure amendment]

[Submission date] March 28, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

Claims (8)

[Claims] An electric hoist device used for hanging a suspended load on a hook at the tip of a crane for moving a suspended load, wherein the electric hoist device is hung at a plurality of positions of the main body frame and the crane. A hanging chain for hanging the main body frame downward by being hooked on a hook at a tip thereof; and a plurality of chains attached to symmetrical positions on a lower plane of the main body frame and installed downward in the main body frame. Each of the chain winding devices includes a chain having a hook for hanging a load at a tip thereof, an electric motor for feeding or winding the chain, and a chain storage unit for storing the wound chain. By controlling a plurality of the chain winding devices individually, Parallel holding of vignetting the suspended load, reversing and any adjustment is possible, crane hanging electric hoist apparatus of the hanging angle. 2. The chain winding device according to claim 1,
The suspended hoist of the crane according to claim 1, wherein the electric hoist is mounted below the main body frame so that the suspension angle is free. 3. The electric hoist according to claim 1, wherein the number of the chain winding devices is two. 4. The electric hoist according to claim 1, wherein the number of the chain winding devices is three. 5. The electric hoist according to claim 1, wherein the number of the chain winding devices is four. 6. The crane according to claim 1, wherein a control panel for controlling the electric motor is further mounted on the main body frame, and a control signal to the electric motor for the control panel is supplied by wire. Hanging type electric hoist device. 7. A crane-hanging electric hoist apparatus according to claim 6, wherein a wireless receiving device is installed on said control panel, and control signals to said electric motor are supplied wirelessly instead of said wire. . 8. The hoist apparatus according to claim 1, further comprising a battery mounted on the main body frame, wherein the motor operates by supplying energy from the battery.