JPS6044230B2 - Load lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides wire rope slinging work that was conventionally performed by ground workers when lifting and transporting single H-beams, strips, etc. or bundles thereof. The present invention relates to a load lifting device for automating.

Furthermore, the present invention can be used for slinging with wire ropes even in extremely dense storage conditions where all long objects such as steel materials, sashes, and piles are stacked together via sleepers. The present invention relates to a load lifting device with a simple configuration that can automate work. Conventionally, an overhead crane with a hook has been used to transfer H-shaped steel, steel top plates, etc. onto trucks or freight cars, or to store them in layers in a yard. It is necessary to sling work by turning the rope onto a hook and removing the wire rope.

This kind of slinging work is carried out by several ground workers in collaboration with the crane driver, but there are problems with safety and work efficiency, and it is important to automate the slinging work and even automate the loading machinery. The most rational solution is to reduce the number of ground workers.

Due to these circumstances, for example, Japanese Patent Application Laid-Open No. 50-1357
Automatic slinging devices have been proposed as shown in the Japanese Patent Laid-Open No. 52-1844.

However, the automatic slinging device disclosed in the former publication is unsuitable for hoisting long objects stacked via sleepers because the wire feed-out throttle and draw-out throttle move in an arc. Furthermore, the automatic slinging device disclosed in the latter publication is constructed so that a cargo receiving chain designed to prevent downward sagging is stretched between the lower parts of the gate-shaped frame, and this cargo receiving chain portion has a long length. Since the length of the chain is supported, it is difficult to manufacture the receiving chain, and there is a limit to the strength of the receiving chain. In consideration of the above points, Mokuinvention has developed a load hoisting device that can automate the slinging work of long materials using wire lobes to improve its flexibility, safety, and reliability, as well as improve the ability to stack and store long materials. The main objective is to provide this information.

The present invention provides a load lifting device equipped with a slinging device for slinging stacked long materials using ear ropes. Two sub-members extending from the main member are provided so as to be movable in the longitudinal direction of the main member as well as pivotable, frames extending downward are provided at both ends of the sub-members, and the end of the sling wire is suspended from the lower end of the one frame. The other end of the sling wire is passed through a guide pulley provided on one frame and wound around the wire winding structure in the sub-member, and the tip of the sling wire is wrapped around the lower end of the other frame. The other end of the arm having a length facing the lower end is attached so as to be pivotable in a horizontal plane, and a wire catching part that engages with the end hanging ring part of the sling wire is movable in the longitudinal direction of this arm. The second arm is inserted into the gap between the long objects by rotating the arm in a horizontal plane, and the tip of the sling wire is caught by the wire catching part provided on the arm. The sling wire is stored by a wire winding mechanism by catching the end hanging loop, stretching the sling wire between frames, and releasing the wire catching part.

The following drawings show an embodiment of the load lifting device of the present invention. Explain.

FIG. 1 shows an example in which the load lifting device of the present invention is attached to cargo handling equipment such as a crane.

Hanging wire 1 hoisted up and down by a crane etc.
And the main member 3 is held in a horizontal position by the fixture 2! has been done. A plurality of movable bodies 4 are mounted on the main member 3 so as to be movable in the longitudinal direction of the main member 3. The movable body 4 is driven by a pulley 5, a wire 6, and a moving electric motor 7 installed on the main member 3, and the longitudinal arrangement of the elongated material K is variable. This moving body 4
A sub-member 8 that is orthogonal to the main member 3 is rotatably installed at the lower part of the main member 3. This sub-member 8 and the frames 9a and 9b installed at both ends thereof are rotated by an electric motor 10 provided on the movable body, making the angle variable. By adjusting these arrangements, long materials K of various lengths and widths can be suspended with the configuration described below. In the figure, 11 is a hanging wire. In addition, in the figure, main member 3
Although it is assumed that the length is fixed, it can also be made into a spreader type and the above-mentioned items can be placed at both ends.

Expanded detailed views of the sub-member 8 and frames 9a and 9b will be described with reference to FIGS. 2 and 3.

A wire winder 12 for winding and storing the sling wire 11 is mounted on one frame attached to the sub-member 8;
A plurality of guide pulleys 13 for guiding the forward and backward movement of the sling wire 11 and a guide frame 14 for locking the hanging ring portion 11a at the tip of the sling wire 11 in a fixed direction and at a fixed position are arranged. . In a state in which the sling wire 11 is wound up by the wire winding mechanism 12 and its end suspension ring portion 11a is guided to a proper position within the guide frame 14, an arm pivotally supported at the bottom of the other frame 9b 1
5 is rotated and locked in the closed position as shown in FIG. 2, the wire catching portion 16 at the end of the arm 15 is in a position to be engaged with the hanging ring portion 11a. The above-mentioned closed position and the position along the longitudinal direction of the elongated material K, that is, the open position, of the arm 15 are carried out by the pivoting movement of the arm 15 in a horizontal plane by an electric motor 17 and a rotary shaft 18 provided on the frame 9b. The wire winding machine 12 includes an electric motor 19
The sling wire 11 is wound up by being driven in the forward and reverse directions by the
There are things that are emitted. The electric motor 10 for rotating the secondary member shown in FIG. 1, the motor for arm turning and the electric motor 17 for wire winding shown in FIG. It controls the Furthermore, it is possible to replace everything including these electric motors with hydraulic or pneumatic actuators. Details of the guide frame 14 of the hanging ring portion 11a at the tip of the sling wire 11 at the lower part of the frame 9a will be explained with reference to FIG.

The sling wire 11 is provided within the guide frame 14 with a smooth curve or a guide roller as shown in the figure.
The internal dimensions and shape of the hanging ring part 11a are formed into a square square shape so that the hanging ring part 11a can move smoothly forward and backward, and the hanging ring part 11a can be locked in a fixed direction and a fixed position as shown in the figure. Therefore, when the sling wire 11 is wound up and the arm 15 is located in the closed position, the wire catching portion 16 is accurately aligned within the hanging ring portion 11a of the sling wire 11. Said arm 1
Expanded details of 5 will be explained with reference to FIGS. 5 and 6. The arm 15 is rotated around the rotating shaft 18, and in the position shown in FIG. An L-shaped catching claw 21 that projects horizontally from the wire catching part 16 that moves without rotating due to the eel 20 is inserted. Thereafter, by rotating the screw shaft 21 screwed into the wire catching part 16, the wire catching part 16 is moved in the direction of the rotation axis 18 of the arm 15,
The sling wire 11 hooked into the catching claw 21 moves along the arm 15. Then, as shown by the two-dot chain line in FIG. 6, the catching claw 20 engages with the hole 23a of the claw supporting member 23 that projects horizontally from the base of the arm 15, and the sling wire 11 is attached. Complete. After this, even if the arm 15 is returned to the open position and rotated, the sling wire 11
The hanging ring portion 11a will not fall off from the claw support member 23. In the example shown in the figure, the wire catching part 16 is rotated by an electric motor 24 provided at one end of the screw shaft 22, so that the wire catching part 16 is freely moved in forward and reverse directions, and the sling wire 11 is rotated.
The operation of passing the wire under the long material K, and the action of spooling the sling wire 11,
Although we have attempted to perform the detachment actions together, it is also possible to implement this using separate mechanisms. Ru. In this case, the height H of the arm 15 must be set below the height of the sleeper inserted between the long objects K, and must be able to reliably support the guide frame and wire catcher at both ends of the sling wire 11. be. Next, the operation of the embodiment of the present invention described above will be explained.

FIG. 7 is an explanatory diagram showing a case where a long material K placed on a sleeper H is lifted up, transported to another position, and then unloaded to a predetermined position.

FIG. 7A shows the state before the long material K is lifted.

In this state, the arm 15 is opened in the direction along the elongated material K, as shown in FIG. Further, the sling wire 11 is wound up and locked as shown in FIG. Next, in the state shown in FIG. 7A, the frames 9a and 9b are lowered to a position where they straddle the predetermined long material K, and the arm 15 is stopped at a height where it can be taken in and out in the space between the upper and lower long materials. Thereafter, the arm 15 is rotated, and as shown in FIG.
position. After that, the sling wire 1 is attached to the catching claw 21.
1 and pull the catching claw 21 back to the position of the other frame 9b while making it follow the arm 15. This state is shown in FIG. 7B. When the wire catching part 16 is pulled back to connect the catching claw 21 and the claw support member 23 and the hanging ring part 11a of the sling wire 11 is moored, the arm 15
Rotate it to the open position and return it to its original position.

As a result, only the sling wire 11 passed between the frames 9a and 9b is left under the elongated material K, so that the elongated material K can be supported. This state is shown in FIG. 7C. Next, by winding up the entire device while appropriately discharging the sling wire 11 from the wire winding machine 12, the long material K is wound at two points by the sling wire 11 as shown in FIG. 7D and FIG. Hanged.

The length of the sling wire 11 can be made flexible and versatile by controlling the motor for the winding machine in forward and reverse directions and stopping it so that it can be finely controlled depending on the shape, weight and working conditions of the long material K. can be given gender. Next, the sling wire 11
After the entire device is positioned at a predetermined position, the elongated material 11 lifted by the sling can be placed on the sleeper H by releasing the sling wire 11 or lowering the entire device.

Thereafter, the wire catching section 16 is attached to the screw shaft 22.
The sling wire 11 is separated from the claw support part 23 by the rotation of the sling wire 11.
As shown in FIG. 7E, the hanging ring portion 11a itself
break away from it and fall. The work is then completed by winding up the sling wire 11 with the wire winding machine 12. At the same time, the device returns to its original state. Note that it is possible to use a normal sling wire as it is as the sling wire 11, but since it is easily deformed by the catching claw 21 and the wire winder 12, as shown in FIG. It is also possible to use the O-shaped locking rod 25 connected to the sling wire 11, and it is clear that the same effect as described above can be obtained in this case as well.

Further, it is easy to provide a control device so that these operations can be performed by remote control by a crane driver or by automatic operation control.

As described above, according to the present invention, it is possible to automate the work of slinging a long material using a wire lobe to improve its flexibility, safety, and reliability, and the horizontal rotation structure of the arm equipped with a wire catching section As a result, the gap between the stacked long materials can be set to correspond to the height of the arm, thereby improving the storage capacity of the long materials.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the load lifting device, FIG. 2 is a view taken along the line ■-■ in FIG. 1, and FIG. 3 is a view taken along the line ■-■ in FIG. 4 is a cross-sectional view of the guide frame of the sling wire, FIG. 5 is an enlarged front view showing a partial cross section of the arm portion, and FIG. 6 is a view taken along the line ■-■ in FIG. 5. The upper part of FIG. 7A is an explanatory diagram of the operation, and FIG. 8 is a diagram showing another example of the sling wire. 3... Main member, 4... Moving body, 8... Sub-member, 9
a, 9b... Frame, 11... Sling wire, 11
a... Suspension ring portion of sling wire, 12... Wire winding mechanism, 14... Guide frame, 15... Arm, 1
6... Wire catching part, 21... Catching claw, 22...
Screw shaft, 23...claw support part.

Claims (1)

[Claims] 1 In a load lifting device equipped with a slinging device for slinging stacked long materials with wire ropes, the main member is lifted and lowered by cargo handling equipment such as a crane, and two sub-members extending horizontally are attached to the main member. The members are provided to be movable in the longitudinal direction of the main member as well as to be pivotable, frames extending downward are provided at both ends of these sub-members, and a suspension ring portion at the tip of the sling wire is positioned at the lower end of the one frame. Then, the other end of this sling wire is passed through a guide pulley provided on one frame and wound around the wire winding mechanism in the sub-member.
The other end of an arm having a length such that its tip faces the bottom end of the one frame is attached to the lower end of the other frame so as to be pivotable in a horizontal plane, and the arm is engaged with the end suspension ring portion of the sling wire. A load lifting device characterized in that a wire catching section is provided movably along the longitudinal direction of the arm.