JPH10182059A - Long member hanging rope lateral extension tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency of long member slinging work by means of a crane hook and a balance. SOLUTION: A freely extensible sheath mechanism is constituted of a pipe 11 provided with a pin hole 15 and pipes 12, 13, which are inserted into the both sides of the pipe 11 so as to be nested and are provided with a plurality of pin holes 16, 17. When the pins are inserted into the pin holes 15, 16, 17, the pipes are fixed mutually and the length of the sheath mechanism is decided. The overall length of a lateral extension tool A is decided according to the overall length of a long member, and in the position about 1m above a hanging hook in the lower end of a hanging rope, the lateral extension tool A is installed in the hanging rope parallelly to a balance by means of a connecting mechanism 18. As a distance from the hanging hook to a worker in the long material end is 400-500mm desirably, the overall length of the lateral extension tool A is adjusted. Since the hanging hook in the lower end of the hanging rope is lowered to the vicinity of the end part of the long member by means of the lateral extension tool A, the hanging hook is positioned within the reach of the worker at that position, so that the worker can carry out slinging work without moving on the long member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long member hanging rope horizontal tensioning device for improving the efficiency of a cargo handling operation of lifting a long member such as a steel pipe using a hanging balance.

[0002]

2. Description of the Related Art A suspended balance suspended by a crane as shown in FIG. 10 is used for moving long materials such as steel tubes loaded on a ship to the ground or vice versa. ing. The balance 3 is connected to the crane hook 1 via the rope 2.
Is suspended. At both ends of the balance 3, long material hanging ropes 4 are suspended. At the lower end of the long rope 4
A long material 9, for example, a hanging hook 8 for hanging a steel pipe is attached. If the hanging hook 8 is shown in detail,
As shown in FIG. 11, a hook 5 at the lower end of the rope 4, a hook 7 for engaging with the hook 5, a hanging hook 8, and a rope 6 having the hook 7 at the upper end and the hanging hook 8 at the lower end. , A plurality of ropes 6 (and hooks 7 and 8) are arranged, and when performing slinging work, a rope is attached to both ends of each of the plurality of long members 9 arranged manually by a worker. Each of the hanging hooks 8 is locked, and a plurality of long members 9 are simultaneously lifted by a crane. The length of the balance 3 is about 1 to 11 m,
The length of the long material 9 becomes approximately 5 to 18 m,
The length of the balance 3 used is changed according to the length of the balance.

[0003]

However, in the above operation, the length 1L of the balance 3 is changed to the length 2L of the long material 9.
As shown in FIG. 10, there is a problem that even if the worker 10 at the end of the pipe reaches his hand, the hanging hook 8 cannot be reached. For example, in FIG. 10, when the long material 9 having a length of 4 m is hung by the balance 3 having a length of 1 m, the crane hook 1 is located at the center of the long material 9. The distance 3L from the position of the suspension hook 8 at the tip of the suspended rope 4 (rope 6) to the pipe end of the long material 9 is about 1.5 m, which is inaccessible to the worker 10. Therefore, the worker 10 has to walk on the long material 9 to the position of the hanging hook 8. When applied to a long member of the 18 m class, the difference in length between the balance 3 and the long member 9 becomes larger, and the walking distance becomes longer.

[0004] However, there is a problem that it is difficult to walk especially on a round steel pipe or the like, and it is dangerous, and there is a problem that workers are severely fatigued. Further, since a number of long members 9 are lifted at the same time, a large number of the long members 9 are arranged and must be reciprocated thereon many times, which further amplifies the above problem.

As a lifting device for automating such a slinging operation, Japanese Patent Application Laid-Open No. 7-309580 discloses a lifting device with a tilt correction function (hereinafter referred to as "prior art 1") and Japanese Patent Application Laid-Open No. 8-91770. The gazette discloses a long material lifting device (hereinafter, referred to as “prior art 2”).

However, prior arts 1 and 2 include:
There is a problem that it takes time to install the long material, the weight is large, the power is required, the cost is high, and a large space is required for operation, and the load cannot be sufficiently loaded.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problem and provide a long material hanging rope horizontal tensioning device which can reach a hanging hook at the tip of a rope if an operator at a pipe end reaches his hand. To provide.

[0008]

According to the first aspect of the present invention,
A central tube having a pin hole, and a single or a plurality of tubes having a plurality of pin holes which are nested at both ends of the tube from the tube ends and are continuously provided at predetermined intervals in the longitudinal direction. The sheath mechanism is connected to a stretchable sheath mechanism, a pin inserted into the pin hole to fix the tubes, and a long material hanging rope provided on the tubes at both ends of the sheath mechanism. And a connecting mechanism for the connection.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a side view showing a contracted state. As shown in the drawing, a pipe 12 is inserted into the both ends of the central pipe 11 from the pipe end of the pipe 11. Furthermore,
A tube 13 is inserted into the tube 12 from its end.
The nested central tube 11 and tubes 12, 13 thus form a telescopically nestable sheath mechanism. Pin holes 15 are provided at both ends of the tube 11, and a plurality of pin holes 16, 17 are continuously provided in the tubes 12 and 13 at predetermined intervals in the longitudinal direction. Although not shown, pins can be inserted into the pin holes 15, 16 and 17. By inserting the pins into the pin holes 15 and 16, the tubes 11 and 12 are fixed immovably. By inserting a pin into the tube, the tube 12 and the tube 13 are fixed immovably, whereby the total length is determined.

A connecting mechanism 18 for connecting a sheath mechanism to the long material hanging rope 4 is provided at the tip of the pipe 13. 3 is a cross-sectional view taken along line AA of FIG. 4, FIG. 4 is a cross-sectional view showing a connecting mechanism according to an embodiment of the present invention, and FIG. 5 is a perspective view showing a connecting tool. The connection mechanism shown in FIGS. 3 to 5 is suitable when the tube of the sheath mechanism is a round tube. As shown in the drawing, a tubular stopper 13b protruding outward is provided at the tip of the tube 13. At the tip of the tube 13,
The connector mounting seat 19 is fitted. Mounting seat 19
Is a side trapezoidal plate-shaped mounting seat 19a having a bolt hole.
And a cylindrical outer insertion portion 19b inserted outside the tube 13
And a cylindrical inner insertion portion 19 inserted inside the tube 13.
c. Further, a cylindrical stopper 19d protruding inward is provided at the tip of the outer insertion portion 19b. The connector mounting seat 19 fitted in the tube 13 is slidable in the axial direction of the tube 13 so that the stopper 13b and the stopper 19d abut against the tube 13 so as not to fall off. A closing portion 13a is provided slightly toward the center from the end of the tube 13, and a coil spring 20 is disposed between the distal end of the insertion portion 19c of the connecting member mounting seat 19 and the closing portion 13a. The spring 21 has a function of buffering an impact received by the horizontal stretching tool A (sheath mechanism) from the rope 4 when the long material 9 is lifted. Mounting seat 19
At a, a connector 21 for holding the rope 4 is fixed by a bolt 22 and a nut 23.

FIG. 6 is a sectional view showing a connecting mechanism according to another embodiment of the present invention, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a perspective view showing a stopper plate. The coupling mechanism 24 shown in FIGS.
Is suitable when the tube of the sheath mechanism is a square tube.
As shown in the drawing, the rope 4 is clamped from both sides by two half-shaped stopper plates 25 inside the mounting seat 26, and is fixed by bolts 27 and nuts 28.

Next, the cargo handling process according to the present invention will be described. As shown in FIG. 9, the overall length of the horizontal stretching tool A of the present invention is determined according to the overall length of the long material 9, and the horizontal stretching tool A is connected to the connecting mechanism 18 at a position about 1 m above the hanging hook 8 at the lower end. Is attached to the suspension rope 4 in parallel with the balance 3. The hook pull-in allowance by the worker 10 is preferably 400 to 500 mm, and the total length of the horizontal stretching tool A is about 1 mm longer than the entire length of the long material 9.
The length is about m shorter. A horizontal strap A attached in this way
As a result, the hanging hook 8 at the lower end of the rope 4 descends near the end of the long material 9, so that the distance at which the worker 10 pulls the hanging hook is within reach, and the worker 10 is long. The slinging operation can be performed without moving by holding the hanging hook 8 on the length member 9.

[0013]

As described above, according to the present invention, the following industrially useful effects are provided.

[0014] The slinging operation can be performed without the worker moving on the long material by holding the hanging hook, and the working efficiency is improved. It is safe because workers do not need to walk on long materials,
Fatigue is reduced.

[0015] Thus, labor saving is achieved. The length can be easily adjusted by the overhang operation by the sheath mechanism, and no power is required for the overhang.

It is lightweight and slim due to a simple mechanism, can be easily attached to a hanging rope, requires little space during work and storage, and is advantageous in manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a side view showing one embodiment of the present invention in a contracted state.

FIG. 3 is a sectional view taken along line AA of FIG. 4;

FIG. 4 is a sectional view showing a connecting mechanism according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a connector.

FIG. 6 is a cross-sectional view showing a connecting mechanism according to another embodiment of the present invention.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a perspective view showing a stopper plate.

FIG. 9 is a side view showing a slinging operation using the horizontal stretching tool of the present invention.

FIG. 10 is a side view showing a conventional slinging operation.

FIG. 11 is a perspective view showing in detail a hanging hook portion at a lower end of the long material hanging rope.

[Explanation of symbols]

 A Long material hanging rope horizontal stretching tool 1 Crane hook 2 Rope 3 Balance 4 Rope 5 Hook 6 Rope 7 Hook 8 Long material hanging hook 9 Long material (steel pipe) 11, 12, 13 Tube 13a Closed portion 13b Stopper 15, 16 , 17 pin hole 18 connecting mechanism 19 connecting member mounting seat 19a mounting seat portion 19b outer inserting portion 19c inner inserting portion 19d stopper 20 coil spring 21 connecting member 22 bolt 23 nut 24 connecting mechanism 25 stopper plate 26 mounting seat 27 bolt 28 nut

Claims (1)

[Claims] 1. A single tube having a central tube having a pin hole, and a plurality of pin holes which are nested on both sides of the tube from the tube ends and are continuously provided at predetermined intervals in a longitudinal direction. Or a plurality of tubes, a telescopic sheath mechanism, a pin inserted into the pin hole to fix the tubes, and a long material hanging rope provided on the tubes at both ends of the sheath mechanism. And a connecting mechanism for connecting the sheath mechanism.