JPH0664889A - Movable lifting jig device - Google Patents

Abstract

PURPOSE:To perform control of a posture so that a PC panel is easy to receive on the receiving side by providing a posture control tool having a brake mecha nism to apply brake during lowering of a chain driven by means of a drive source, in a moving lifting jig device to lift a building material with the aid of a crane in a way to sling the two end parts of the building material with the aid of a crane. CONSTITUTION:When handling of a PC panel 4 mounted on the body wall surface of a building is executed, the slinging wire 2b of a lifting jig 2 and a slinging wire 2d on the posture control part 3 side; are first hooked to the opposite sides in a longitudinal direction of the PC panel 4, and the PC panel 4 is brought into a horizontal state to lift it by means of a crane. In a posture control part 3 to receive a signal from an IR ray remote controller when the PC panel 4 is lifted up to a given height and an infrared ray remote controller 10 is operated by a worker, a sprocket is rotated with the aid of a DC motor incorporated in the posture control part 3 to lower a chain 3a. Simultaneously, a brake mechanism is operated, the PC panel 4 is slowly rotated to a down state around the hook part, serving as a fulcrum, of the wire 2b and brought into a vertical posture and mounted on a body wall surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable hoisting jig device in which a plate-shaped or rod-shaped building material is hoisted by a lifting machine and then the posture can be controlled on the receiving side so that the building material can be easily attached. It is a thing.

[0002]

2. Description of the Related Art At a construction site such as a building, for example, a PC board is lifted up to a predetermined height by a hoist as an outer wall material.
An operator waiting on the body receives the PC board and attaches it to the body to form an outer wall. in this case,
Since the PC boards are loaded horizontally and carried to the site by truck for unloading, the PC boards must be flipped to the vertical status when they are attached to the body. This reversing operation is not easy, and there is a risk that the PC board is vertically raised on the ground, and there is a problem that the end of the PC board is damaged. Also, in the case of erecting steel columns on the frame or attaching steel beams for underground frame construction, after hoisting with a lifting machine,
At the receiving side, it is necessary to control the posture so that it can be easily attached when it is unloaded, but in the past it could not be done easily.

In order to solve such a problem, the building material may be hung from the beginning in a posture suitable for mounting. However, if the PC board is hung in a vertical state, it will be strongly shaken due to strong wind and it will be dangerous. Yes, or if it is hoisted directly from the loading platform of a truck loaded horizontally, it is not easy to make the PC board vertical on a narrow loading platform, and it is difficult to sling and it is difficult to handle the load. Not only P
This causes inconvenience such as damage to the end of the C plate.

Even in the case of PC boards horizontally stacked on the site, it is usually lifted in a horizontal state as it is, and it is not impossible to temporarily lower the PC boards to stand vertically while hoisting them. As the work becomes complicated and the edge of the PC board is rubbed against the ground, a damage accident easily occurs,
Furthermore, slinging work becomes difficult.

[0005]

In order to solve such a conventional problem, the applicant first applied for a movable hanging jig device capable of controlling the attitude by raising and lowering a chain (actual application: No. 3-4606), but the mechanism is complicated and expensive because the chain is hoisted and hoisted during posture control, and the entire device is considerably heavy, so it cannot be used in the tower crane 200TM class. There was a problem.

The present invention has been made in order to solve such a problem, has a simple mechanism and is inexpensive, and has a mechanism for reducing the weight of the apparatus so that it can be sufficiently used even in a tower crane 200TM class. The challenge is to provide.

[0007]

Means for Solving the Problem As means for technically solving this problem, the present invention provides a drive source when a plate-shaped or rod-shaped building material is slung on both ends and lifted by a lifting machine. , A chain that is driven by this drive source, and an attitude control tool that includes a brake mechanism that applies braking when the chain descends, and is attached to the lifting machine while hanging the lower end of the chain on one of the slings, The gist is that the posture of the building material can be controlled by lowering the chain of the posture control tool after the plate-shaped or rod-shaped construction material is lifted by a lifting machine. Further, the gist is that the brake mechanism is an electromagnetic powder brake, or the brake mechanism is an electromagnetic powder clutch and an electromagnetic brake.

[0008]

[Operation] After hoisting a PC board or steel column with a hoist, when gradually lowering the chain while applying the brakes with the brake mechanism, the sling wire hooked on this chain lowers the PC board or steel column. The posture can be controlled from horizontal to vertical or from vertical to horizontal by rotating it by about 90 degrees.

[0009]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, 1 is a hook of a lifting machine,
The hanging jig 2 and the attitude control tool 3 are hooked and hung.

The hanging jig 2 has hanging wires 2a fixed to both ends of a rod-shaped body, and is hooked on the hook 1 of the lifting machine via the wires 2a. Further, two hanging wires 2b are provided. The lower ends of the levers are hooked on both ends of one side 4a, which is one of the opposing sides of the PC plate 4 in the longitudinal direction.

The attitude control tool 3 is hung on the hook 1 of the hoisting machine via the hanging wire 2c, and the hook 3b attached to the lower end of the chain 3a which is vertically moved is attached to the sling wire 2d. Is caught,
The lower end portion of the slinging wire 2d is hooked on both end portions of the other side 4b of the PC board 4 which faces the longitudinal direction.

As shown in FIG. 4, the attitude control tool 3 includes a drive source composed of a battery 5 and a DC motor 6, the chain 3a driven by the drive source via a sprocket 7, and the descent of the chain 3a. It has a brake mechanism 8 for applying braking at times.

An electromagnetic powder brake is used as the brake mechanism 8, and a magnetic powder called powder is interposed in the gap between the cylinder and the rotor, and the magnetic flux generated by energizing the coil causes the powder to connect the cylinder and the rotor. It connects in a chain along the path and solidifies, and the binding force stops the rotation of the rotor. Therefore, by engaging this electromagnetic powder brake with the sprocket 7, its rotation can be braked and the descending speed of the chain 3a can be controlled. On the other hand, when the energization of the coil is stopped, the magnetic flux disappears, and at the same time, the powder which has been linked and solidified in a chain is released from the linked state and the brake is released.

The electromagnetic powder brake acts as a kind of clutch because it changes the state of the powder depending on whether it is energized or de-energized to stop or move the rotor. Therefore, the brake mechanism 8 is an electromagnetic clutch. It can also consist of a powder clutch and an electromagnetic brake. In this case, the electromagnetic brake is released when the chain 3a is moving, and the electromagnetic powder clutch can be used for braking when the chain is moving. In other words, it is possible to normally use an electromagnetic brake for braking, and use an electromagnetic powder clutch for braking during posture control.
Note that the brake mechanism 8 can be implemented by only an electromagnetic brake.

Reference numeral 9 denotes a receiving section composed of an infrared sensor, which is attached to a main part of the attitude control tool 3 and receives a command signal from an infrared remote control 10 for remote control to operate the DC motor 6 and the brake mechanism 8. Control each. 1
Reference numeral 1 denotes a charger, which is connected to the battery 5 for charging when charging.

As shown in FIG. 3, in order to stop the chain 3a of the attitude control tool 3 at a certain position when the chain 3a is wound up, a detachable stopper piece 1 is provided at a key part of the chain 3a.
2 is inserted and fixed, and is formed so as to stop when it comes into contact with the limit switch portion 14.

The movable hoisting jig device according to the present invention is constructed as described above, and is used for mounting a plate-like or bar-like building material at a construction site when hoisting it and then lowering it at the receiving side. The posture can be controlled to a suitable state.

As shown in FIG. 1, the PC board 4 that has been carried in by a truck or is already stacked and stored at the site is hung in a horizontal state, and when a worker waiting on the frame receives it. The PC board 4 can be mounted on the wall surface of the body by controlling the attitude of the PC board 4 vertically and maintaining the vertical state.

In this case, the slinging wire 2b of the hanging jig 2 and the slinging wire 3c of the attitude control tool 3 are hooked on the opposing sides of the PC board 4 in the longitudinal direction, respectively,
The plate 4 is placed horizontally and is lifted by a lifting machine. After a worker standing by on the frame 13 operates the infrared remote controller 10 after hoisting to a required height, the receiver 9 attached to the attitude control tool 3 receives the signal and drives the DC motor 6. Then, the sprocket 7 is rotated to lower the chain 3a, and at the same time, the brake mechanism 8 is energized to apply the brake.

The reason for applying the brake is that the PC board 4 is held by the jig 2 when the chain 3a of the attitude control tool 3 is lowered.
It rotates downward with the hooking portion of the side slinging wire 2b as a fulcrum, and the chain 3a is prevented from being strongly pulled by the weight of the PC plate 4 accompanying this rotation. This is because the brake is applied so that the chain 3a of the attitude control tool 3 slowly descends at a constant speed, and the risk of the PC board 4 rapidly rotating is prevented.

In this way, when the PC board 4 is inverted 90 degrees downward while slowly lowering the chain 3a of the attitude control tool 3, the attitude of the PC board 4 can be controlled in a vertical state as shown in FIG. it can. At this point, the DC motor 6 is stopped, the PC board 4 is held in the vertical state, and the PC board 4 is moved to the wall surface of the skeleton 13 and attached at a predetermined position, and then P
The sling wires 2b and 2d are removed from the C plate 4.

After that, the brake is released by the infrared remote controller 10, and the DC motor 6 is driven again to raise the chain 3a of the attitude control tool 3. This return is stopped when the stopper piece 12 comes into contact with the limit switch portion 14, and is lowered to the ground together with the hook 1 of the lifting machine to lift the next PC board. In this way, it is possible to efficiently carry out the work of hoisting the PC boards 4 horizontally one by one and then inverting them vertically, maintaining the vertical state and attaching the PC boards 4 to the wall surface of the skeleton 13.

Next, the case of hoisting the steel column will be described. For example, as shown in FIG. 5, a slinging wire 16 is hooked on one end of the steel column 15, and the upper end of the wire is hooked on the hook 1 of the lifting machine. A short slinging wire 17 is attached to the other end of the steel pillar 15 for hooking, and the upper end of the wire 17 is attached to the lower end of the chain 3a of the attitude control tool 3, and the attitude control tool 3 is suspended. Via the hook 1 of the lifting machine.

When the hoist is hoisted, the steel pillars 15 are hoisted horizontally and the steel pillars 15 must be made vertical when they are received in order to stand upright on the skeleton 13. This can be easily done by the attitude control tool 3. . That is, when the chain 3a of the attitude control tool 3 is lowered by remote control operation, the steel column 1
This is because the 5 can be rotated 90 degrees downward to control the attitude vertically. Also at this time, when the chain 3a descends, the brake is applied so that the steel frame column 15 slowly rotates, so that the safety of work can be ensured.

As shown in FIG. 6, the posture control tool 3 can be effectively used even when attaching a steel beam for underground construction work. In this case, the slinging wire 20 is hooked on one end of the steel beam 19, the upper end thereof is hooked on the hook 1 of the lifting machine, and the shorter slinging wire 21 is attached to the other end of the steel beam 19. At the same time as attaching, attach the upper end to the lower end of the chain 3a of the attitude control tool 3,
The attitude control tool 3 is hooked on the hook 1 of the lifting machine via the hanging wire 22 so that the end on which the shorter slinging wire 21 is hooked is on the upper side.
Lift 9 almost vertically.

To hold the vertical state and lower it to the underground structure and attach it as a beam, the steel beam
However, when the chain 3a of the attitude control tool 3 is lowered, the steel beam 19 is moved downward by 90 degrees.
The posture can be controlled in a horizontal state by rotating the body once. Also at this time, the brake is applied when the chain 3a of the posture control tool 3 is lowered to slowly rotate the steel beam 19.

[0027]

As described above, according to the present invention,
After hoisting a plate-shaped or bar-shaped building material with a lifting machine, the receiving side can easily control the attitude of the building material from horizontal to vertical or from vertical to horizontal, and an attitude control tool for controlling the attitude. Since the structure is such that the chain is lowered while the brake is applied, the mechanism is simpler than the conventional one and it can be provided at a low cost, and since the weight can be reduced, the tower crane 200TM class can be used sufficiently, which is an excellent effect.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is an explanatory diagram when a PC board is suspended in a horizontal state.

FIG. 2 is an explanatory diagram when the PC plate is inverted to be in a vertical state after being lifted.

FIG. 3 is an explanatory view showing a stopper piece of the chain.

FIG. 4 is a configuration block diagram of a posture control tool.

FIG. 5 is an explanatory diagram when the steel column is suspended in a horizontal state.

FIG. 6 is an explanatory view showing a state in which a steel frame column is erected on the skeleton or a steel beam is attached to the underground skeleton.

[Explanation of symbols]

1 ... Hook of lifting machine 2 ... Hanging jig 2a ... Wire for hanging 2b ... Wire for sling 2c ... Wire for hanging 2d ... Wire for sling 3 ... Posture control tool 3a ... Chain 3b ... Hook
4 ... PC board 4a ... one side 4b ... other side
5 ... Battery 6 ... DC motor 7 ... Sprocket 8 ... Brake mechanism 9 ... Receiver 10 ... Infrared remote controller 11 ... Charger 12 ...
Stopper piece 13 ... Body 14 ... Limit switch part 15 ... Steel column 16, 17 ... Wire for slinging 18 ... Wire for hanging 19 ... Steel beam
20, 21 ... Wire for slinging 22 ... Wire for hanging

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshiyuki Saji 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (3)

[Claims] 1. A drive source, a chain driven by this drive source, and a brake mechanism for applying a brake when the chain descends when the plate-shaped or rod-shaped building material is slung on both ends and lifted by a lifting machine. Attitude control tool with, is attached to the lower end of the chain hooked to one of the slings while hanging on the lifting machine, after lifting the plate-shaped or rod-shaped building material with a lifting machine, A movable hanging jig device that allows the posture of the building material to be controlled by lowering the chain. 2. The movable hanging jig device according to claim 1, wherein the brake mechanism is an electromagnetic powder brake. 3. The movable hanging jig device according to claim 1, wherein the brake mechanism is an electromagnetic powder clutch and an electromagnetic brake.