JP2933110B2 - Hanging and sling removal equipment for suspended loads - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging load slinging / unballing device which is hung up by a hoisting wire wound around a sheave and rotatably supports the hanging load.

[0002]

2. Description of the Related Art When a suspended load is lifted by a sling wire for a crane, a method of winding a wire rope, a method of using a shackle, a method of using various clamps, and the like have been used.

In recent years, for example, Mighty Schall Ace (trade name: manufactured by Eagle Clamp Co.), Renflow Clamp (trade name: Renflow Japan Co., Ltd.), in order to improve the safety of slinging work and to save labor. ) And Tsuru Taro (trade name: manufactured by Yoshinaga Machinery) are known.

Further, as disclosed in JP-A-58-1686, JP-A-63-87493, and JP-A-3-195693, a cylinder for generating a fluid pressure by a bucket load is provided, There has been proposed a device that opens and closes a bucket gate using pressure.However, these technologies merely connect a gate opening / closing cylinder originally provided to a fluid pressure cylinder, and thus the load of a suspended load is reduced. It is not a technology that can be immediately adopted in a slinging / ball removing device.

[0005]

However, each of these slinging / ball removing devices uses a battery as a power source, and therefore has a heavy own weight, so that the rated load is reduced accordingly. It becomes necessary.

In addition, there is a problem that a lot of labor is spent for charging work during a use period and maintenance and storage during a period of no use.

[0007] Further, although it is possible to remove balls by remote control using radio waves, slinging is manual, which is a bottleneck for automation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sling / ball removing device for a suspended load which is light in weight, requires no man-hour and cost for maintenance management, and can automate the sling / ball removing operation.

[0009]

According to the present invention, a sheave is mounted on a hoisting / unballing device for a hoisting load which is hung by a hoisting wire wound around a sheave and rotatably supports the hoisting load. A cylinder is rotatably connected to the suspended hanging body via its piston lot, and a base is attached to the lower part of the cylinder, and the fluid pressure of the cylinder due to the weight of the suspended load is accumulated on the base. An accumulator, an oil tank, and a control unit are provided, a load hanging clamp is attached to the base via a chain, and an opening / closing cylinder is provided on the clamp, and the cylinder is connected via a hydraulic hose. The opening / closing cylinder is connected to the accumulator for accumulating pressure, and the opening / closing cylinder includes a lot that penetrates a holding portion of the suspended load and supports the suspended load with the clamp. Cage, and a radio operating device for opening and closing the opening-closing cylinder by wireless is provided.

[0010] According to the present invention, in a hanging load slinging / ball removing device for lifting a load by a hoisting wire wound around a sheave and rotatably supporting the suspended load, the hanging member main body to which the sheave is attached. A cylinder is rotatably connected to the cylinder via the piston / lot, and a base is attached to a lower part of the cylinder, and an accumulator and an oil tank for accumulating fluid pressure of the cylinder by the weight of the suspended load on the base. And a control unit, and a lower part of the base is fixedly provided with a gripper body pivotally supported by a load suspending adapter adapted to the shape of the suspended load, and the piston / lot is fixed to the main body. An opening / closing cylinder pivotally connected to the adapter, the cylinder being connected to the pressure accumulator through a hydraulic hose, and Radio operating device for opening and closing a cylinder by radio is provided.

[0011]

In the hanging and slinging device for a suspended load constructed as described above, a fluid pressure is generated by the weight of the suspended load in a cylinder rotatably connected to the lifting tool body via its piston / lot. The cylinder for opening / closing the load hanging clamp or the load hanging adapter is operated by the fluid pressure to open / close the load hanging clamp or the load hanging adapter. At this time, the opening / closing operation of the opening / closing cylinder is performed by remote control using a wireless operation device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG.
The hoisting wires 9 of a crane (not shown) are wound around the sheave 10.

A rotary shaft 12a is provided on the hanging body 12 via a bearing 11, and a rod 1b of a piston 1a of the cylinder 1 is directly connected to the rotary shaft 12a by a coupling 1c.

Referring also to FIGS. 2 and 3, around the cylinder 1, there is an accumulator 2 for accumulating pressure, a tank 3 of the working fluid of the cylinder, for example, an oil, a control device, a battery, and a radio for remote control. A control unit 6 for storing the machine and the like is provided, and a base 5 forming a base is attached below the control unit 6. Reference numeral 8 denotes a wireless operating device having the antenna 7.

The accumulator 2 for accumulating pressure is equipped with solenoid valves and hose couplers 4a and 4b.

FIG. 4 shows an example of a gripping means for a load hanging operation connected to the hanging tool main body 12 shown in FIG. 1 described above. A plurality of load hanging clamps 22 are provided on the base 5 by chains 25, 25. It is connected to the hole 27. The open / close cylinders 21, 21 attached to the clamp 22 are connected to the solenoid valve / hose couplers 4a, 4b by hydraulic hoses 28, 28, respectively.

The rod 2 directly connected to the cylinder 21
The reference numeral 1a penetrates the holding portions 26a and 26b of the suspended load 26, and the clamp 22 grips the suspended load.

An operation switch 23 attached to the clamp 22 is connected to a control device by a cable (not shown).

Accordingly, if the load suspending clamp 22 is set at the grip portion 26a of the suspended load 26 and the operation switch 23 is turned on, the rod 21a of the opening / closing cylinder 21 is opened in the opening direction by the hydraulic pressure accumulated in the accumulator 2. When the operation switch 23 is turned off, the opening / closing cylinder 2
One rod 21a operates in the closing direction to grip the grip portion 26a. In this case, the operation of each of the clamps 22 may be operated by the switch 23 of the clamp, and the operation of opening and closing all the clamps 22 may be instructed by the wireless device 8.

Further, if the switch 23 is instructed only with an open signal, a normally closed signal is output, so that a more secure load hanging clamp can be obtained. Then, if the weight of the suspended load 26 is applied, the hydraulic pressure rises and is accumulated in the accumulator 2.

FIG. 5 shows another embodiment of a means for gripping a suspended load. A suspension adapter 32 (an adapter adapted to an H-shaped steel in the illustrated example) adapted to the shape of the suspended load is pivotally moved by a pivot 34a. The main body 3 is attached to the gripper main body 34.
4 is fixed to the base 5 on the side of the hanging tool main body. An opening / closing cylinder 31 for closing the adapter 32 is provided at the other end of the adapter 32 having a bent portion for gripping the suspended load (H-shaped steel) 36.
The rod 31a of the opening / closing cylinder 31 is pivotally attached to the adapter 32, and the cylinder side engages with a ball seat provided on the adapter 32, and the cylinder 31 and the adapter 32 are pressed against each other by a spring (not shown). Has been energized.

Hose couplers provided at both ends of the cylinder 31 are connected to solenoid valves / hose couplers 4a and 4b of the accumulator 2 for accumulating pressure, respectively.

Therefore, if an instruction to open or close is given by the wireless operating device 8 shown in FIG. 3, the load suspending adapter 32 opens and closes to grip the suspended load. In the example shown, it is for H-shaped steel,
If this is adjusted to a shape such as a circle, a square, or a triangle, the wireless operation device 8 can be used as a remote control slinging / ball removing device.

[0024]

According to the present invention, a fluid pressure is generated by the weight of a suspended load in a cylinder rotatably connected via a piston / lot to a hanging body having a sheave over which a winding wire is wound. Then, the cylinder for opening / closing the load hanging clamp or the load hanging adapter is operated by the fluid pressure to open / close the load hanging clamp or the load hanging adapter. Therefore, the opening / closing cylinder of the load hanging clamp or the load hanging adapter is operated. It does not require a battery as a power source, does not cause a reduction in the rated load due to the weight of the battery, and does not require any special effort for charging work during use or maintenance and storage when not in use.

Further, since the load hanging clamp or the load hanging adapter is provided rotatably with respect to the hanging tool main body, the position of the hanging load can be easily determined without slinging when hanging the hanging load. Slinging can be performed. Further, the operation of the opening / closing cylinder of the load suspending clamp or the load suspending adapter is performed by remote control using a wireless operating device, so that the operation is easy and the safety of work can be measured.

[Brief description of the drawings]

FIG. 1 is a front view showing a cylinder portion of a hanging tool main body according to an embodiment of the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a perspective view showing an example of a wireless operating device.

FIG. 4 is a front view showing an embodiment of a grip unit connected to the cylinder unit of FIG. 1;

FIG. 5 is a front view showing another embodiment of the grip portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cylinder 2 ... Accumulator for accumulating pressure 3 ... Tank 4 ... Solenoid valve / hose coupler 5 ... Base 6 ... Control part 8 ... Wireless operating device 9 ... Winding wire DESCRIPTION OF SYMBOLS 10 ... Sheave 21 ... Opening / closing cylinder 22 ... Load suspension clamp 23 ... Operation switch 25 ... Chain 26 ... Suspended load 28 ... Hydraulic hose 31 ... Opening / closing cylinder 32 ... Hanging adapter 35 ... Hydraulic hose 36 ... Hanging load

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-87493 (JP, A) JP-A-58-1686 (JP, A) JP-A-3-195693 (JP, A) JP-A-60-1985 122683 (JP, A) JP 4-16395 (JP, B2) JP 3-30390 (JP, Y2) JP 4 27909 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁶ , DB name) B66C 1/00 B66C 13/00

Claims (2)

(57) [Claims] 1. A hoisting / ball removing device for a suspended load which is lifted by a hoisting wire wound around a sheave and rotatably supports the suspended load. The cylinder is rotatably connected via a cylinder, and a base is attached to the lower part of the cylinder. An accumulator for accumulating the fluid pressure of the cylinder by the weight of the suspended load, an oil tank, and a control unit are provided on the base. A load hanging clamp is attached to the base via a chain, an open / close cylinder is provided on the clamp, and the cylinder is connected to the pressure accumulator via a hydraulic hose,
The opening / closing cylinder is provided with a lot that penetrates a holding portion of the suspended load and supports the suspended load with the clamp, and a wireless operating device that wirelessly opens and closes the opening / closing cylinder is provided. And sling removal equipment for hanging loads. 2. A hoisting / unballing device for a suspended load which is lifted by a hoisting wire wound around a sheave and rotatably supports the suspended load. A cylinder is rotatably connected via a base, a base is attached to a lower part of the cylinder, and an accumulator for accumulating fluid pressure of the cylinder due to the weight of the suspended load on the base, an oil tank, and a control unit are provided. A grip portion main body that pivotally supports a load suspending adapter adapted to the shape of the suspended load is fixed to a lower portion of the base.
An opening / closing cylinder pivotally connected to the adapter is provided, the cylinder is connected to the accumulator for accumulator through a hydraulic hose, and a wireless operating device for opening and closing the opening / closing cylinder wirelessly is provided. A sling / unballing device for hanging loads, which is provided.