JPH0575678B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a handling device that is effective for handling shaped steel plates such as angle iron and steel sheet piles.

(Prior art and its problems) Several to dozens of sections are bundled and piled up on the ground via rootstocks, and when shipped, they are slinged using wire and hoisted by a crane. It was posted on trucks, etc. For this purpose, a wire is hung on the shaped steel and hung on the lifting hook of the crane.
~3 workers are required. Workers are exposed to dangers such as the load collapsing and the lifted shaped steel falling. It was necessary to secure enough space between the sections for the sling work to allow the worker to fit in, and the problem of having to enlarge the planar space to accommodate the sections was unavoidable.

(Purpose of the Invention) The present invention was devised to solve the above-mentioned conventional problems, and is designed to save labor and improve safety in handling work, and to significantly reduce the storage space compared to the conventional method. The purpose is to

(Structure of the Invention) The handling device of the present invention synchronously approaches each other on hanging beams suspended by an overhead crane or the like.
A pair of hanging tools that can be separated from each other are provided, a hanging frame is rotatably attached to the hanging tools, and both ends of the hanging frame have sloped surfaces that extend downward, and the pair of hanging tools face each other. a centering guide is provided, and furthermore, at both ends of the hanging frame, hanging load forks extending in the horizontal direction are movable up and down, and
It is characterized by being hung so that it can rotate.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

Drawing 1 shows a hanging frame, and fork support outer cylinders 2 are fixed to both ends of the hanging frame 1 along the vertical direction perpendicular to the hanging frame. Fork support outer cylinder 2
Inside, a fork support inner cylinder 3 is rotatably supported by bearings 4 and 5.

A link 6 is provided above the fork support outer cylinder 2.
are fixed to each other in parallel, and the tips of the links 6 are connected to each other by a connecting link 7. A link 8 is further fixed to one of the fork support inner cylinders 3,
The tip of the ring 8 is connected to the tip of a rod of a fork swing cylinder 9 provided on the suspension frame 1. Thus, the fork rotation cylinder 9 is configured to allow the fork support inner cylinder 3 to rotate forward and backward through 90 degrees via the link mechanisms 6, 7, and 8. At the upper end of these fork support inner cylinders 3, there are provided a screw jack 10, a drive device 11, and limit switches LS9 and LS12 for stopping the fork lifting end, which are operated by a striker 12 provided on the screw jack 10. Further, on the inner surface of the fork support inner cylinder 3, an upper support protrusion 13 and a lower support protrusion 15 provided with a groove 14 opening on the top surface are fixedly provided. Further, a plate-shaped centering guide 17 having side ends with inclined surfaces 16 that are opposed to each other and that expand in the magnetic downward direction is connected to the lower end side of the lower support protrusion 15, and is connected to the lower end of the hanging frame 1. It stands out. On the other hand, the fork support outer cylinder 2 is provided with a frame rotation cylinder 18 and limit switches LS7 and LS8 for stopping the fork rotation end, which are operated by a striker 19 provided on the link 8.

Reference numeral 20 denotes a fork support rod with a rectangular cross section, and the lower end of the fork support rod 20 is connected with a hoisting fork 21 that protrudes in the horizontal direction, and the side opposite to the fork at the lower end has a protrusion that continues in the vertical direction. A strip 22 is provided. The fork support rod 20 is attached to the screw jack 1 within the fork support inner cylinder 3.
It is connected to the lower end of the vertically moving member 10A of No. 0, and is supported by the upper support protrusion 13 by surface contact,
Moreover, it is engaged and supported by the groove 14 of the lower support protrusion 15 . A limit switch LS10 for stopping the fork from descending to the ground is provided at the bottom of the fork 21, and a limit switch LS11 for confirming fork setting is provided at the tip.

Reference numeral 23 denotes a hanging tool, which is composed of an upper tube 24, a lower tube 25, and a connecting shaft 26. Lower pipe body 25
is concentrically connected to the upper tube body 24 by a flange joint 27, and the inner circumference of the upper end surface of the lower tube body 25 is inwardly from the inner surface of the upper tube body 24 due to the difference in inner diameter of both tube bodies 24 and 25. It's overhanging. The connecting shaft 26 is fitted into the lower tube body 25 via a sliding key mechanism 28 or a spline mechanism and a metal bearing 29 so as to be able to move only in the axial direction. A retainer 30 is provided to be secured to the inner circumferential portion of the upper end surface of 25. At the lower end (connection shaft 26) of the upper tube body 24, the suspension frame 1 is rotatably mounted by a bearing 31 provided at the center of the upper part, and a link 32 is fixed.
The tip of the link 32 is connected to the rod tip of the frame rotation cylinder 18 . In this way, when the hanging frame 1 is lifted up via the hanging tool 23, the frame rotation cylinder 18 rotates the lifting tool 23 as a center via the link 32.
It is configured to rotate 90 degrees forward and backward.

On the hanging frame 1, there are a limit switch LS4 for emergency stop of frame lowering which operates with the lower end of the lower tube 25 of the hanging tool 23 as a striker, a limit switch LS5 for stopping the end of frame rotation which operates with a striker 32A provided on the link 32;
LS6 is provided.

Reference numeral 33 is a hanging type trolley, and the upper part of the trolley 33 is provided with a hanging roller 34 and a female threaded part 35.
The upper end of the upper tube body 24 of the hanging tool 23 is connected to the lower part via a universal joint 36. On the other hand, at the lower part of the suspension beam 37 that supports the trolley 33, there are a guide rail 38, threaded rods 39, 40 with opposite threads extending from the center of the beam to the ends, and threaded rods 39, 40 at the center of the beam. A driving device 41 for rotating the cable 40 is provided, and a pair of mounting portions 43 provided with hanging wire mounting pins 42 protrude from the upper part. The suspension beam 37 is connected to a suspension wire 45 lowered from an overhead crane 44 by a shackle or the like at a mounting portion 43, and is supported by the overhead crane 44 via the suspension wire 45 so as to be movable up and down. On this hanging beam 37, threaded rod 3
Two trolleys 33 are disposed symmetrically with respect to the center of the beam, and are movably supported on a guide rail 38 via a hanging roller 34, with a female screw portion 35 screwed into the trolleys 9 and 40. At the lower part of the hanging beam 37, there are a limit switch LS1 for stopping the trolley moving end, which operates the trolley 33 as a striker, and a limit switch LS1 for stopping the trolley moving end.
LS2 is provided.

Reference numeral 46 denotes a detection piece for detecting the upper end level of a suspended load, which is constructed by connecting end pieces 48 to both ends of an intermediate piece 47 and extending at right angles to opposite sides. A rod 49 is erected on a bent portion of the detection piece 46, which is made up of, for example, an intermediate piece 47 and an end piece 48. On the other hand, a guide pipe 50 and a guide plate are provided below the central portion of the hanging frame 1. and intermediate piece 47
is along the width direction of the frame at the center of the hanging frame 1, and the end piece 48 is along the longitudinal direction of the frame, and the rod 49 is fitted into the guide pipe 50 and supported via a retaining mechanism (not shown). and the end piece 48 engages the guide plate. Thus, the detection piece 46 is configured to be able to move up and down below the central portion of the suspension frame 1 by the guide mechanisms 49 and 50. At the lower part of the hanging frame 1, a limit switch LS3 for detecting the upper end level of the suspended load is provided which is operated by a striker 52 provided on the rod 49 to detect the upper end of the suspended load by the upward movement of the detection piece 46.

(Function) In FIG. 7, several to dozens of shaped steels are bundled together and stacked on the ground via rootstocks 53.
4 is handled in the following procedure using two of the apparatuses suspended by an overhead crane 44 as a set.

Note that this device is equipped with a fork 21 as shown in FIG.
It is assumed that the hanging frame is at the swing end position perpendicular to the longitudinal direction of the hanging frame and at the upper moving end position, and is suspended from the overhead crane 44 in parallel to the girder direction.

(1) Visually align the forks 21 of this device so that they are positioned above both sides of the section steel 54 by running and stopping the overhead crane 44.

(2) The drive device 41 rotates the threaded rods 39 and 40 to which the trolley 33 is screwed to move the trolley 33 along the guide rail 38 or approach it, thereby setting the limit switch LS1 for stopping the trolley moving end. The spacing of this device is adjusted to correspond to the length of the section steel 54 within the range set by LS2.

(3) When the entire device is lowered by unwinding the hanging wire 45 and lowering the hanging beam 37 by operation on the crane side, the detection piece 46 will surely come into contact with the upper end of the shaped steel 54 due to its shape. As the device moves upward with respect to the hanging frame 1 as it descends, the limit switch LS3 for detecting the upper end level of the suspended load is activated and the lowering is stopped.

In addition, if limit switch LS3 breaks down,
When the detection piece 46 comes into contact with the guide pipe 50 due to the lowering of this device and its upward movement with respect to the hanging frame 1 stops, the lowering of the hanging frame 1 stops, but the lowering of the hanging beam 37 continues. , the connecting shaft 26 of the hanging tool 23 enters into the lower tube body 25. For this reason, the frame lowering emergency stop limit switch LS4 is
Since the hoist is operated at the lower end and the lowering is stopped, no overload is applied to the hoist 23 or the like.

(4) When the lowering of this device stops, the detection piece 46
and the inclined surface 16 of the centering guide 17 on the upper end side of the shaped steel 54 with which it came into contact are at a height position where they can come into contact with each other. Furthermore, since the width of the shaped steel 54 varies depending on the type of shaped steel, the distance between the base ends of the forks 21 is matched to the maximum width of the shaped steel 54. Therefore, the longitudinal direction of the suspension frame 1 (the traveling direction of the overhead crane 44) is made to match the width direction of the section steel 54 having the maximum width (see FIGS. 9 and 11).
In the case of a narrower width section steel 54, the rod retracting operation of the frame turning cylinder 18 causes the hanging frame to pivot in a counterclockwise direction in plan view about the hanging tool 23, making it oblique with respect to the longitudinal direction of the section steel 54. If the fork 21 is rotated in the clockwise direction in plan view by the rod retraction operation of the fork turning cylinder 9 to match the longitudinal direction of the section steel 54 (see FIG. 10), the inclined surface 16 of the guide 17 will be aligned with the section steel 54. The fork 21 is brought into contact with both upper side edges of the section steel 54, and the fork 21 is centered with respect to the section steel 54.

(5) After inputting and setting the downward stroke amount of the fork 21 (stroke amount of the screw jack 10) from the height of the shaped steel 54 using the digital switch, the drive device 11 moves the screw jack 10
When the fork 21 is activated, the fork 21 descends, and the limit switch LS9 for stopping the fork lowering end and/or the limit switch LS9 for stopping the fork lowering and grounding are activated.
The fork 21 stops lowering when the LS 10 is activated.

(6) Limit switch for stopping the fork rotation end by retracting the rod of the fork rotation cylinder 9.
Rotate the Fork 21 until the LS8 operates,
Match the longitudinal direction of the hanging frame 1 (12th
(see figure). At this time, limit switch LS11 for fork set confirmation is operated, and fork 2
1 is set below the shaped steel 54.

(7) After confirming the fork set, the whole device is raised by winding up the hanging wire 45 and hoisting the hanging beam 37 using the slane side operation, and the shaped steel 54 moves between the two devices and the hanging beam. 3
7 and is suspended by an overhead crane 44 with both ends supported. At this time, the overturning moment acting on the fork 21 supporting the section steel 54 is supported by the fork support inner cylinder 3 supported on the suspension frame 1 via the fork support outer cylinder 2 via the upper and lower support protrusions 13 and 15. and Foke 21
will not tilt.

Therefore, handling work can be performed safely and reliably.

When lowering the shaped steel 54 to the ground, use the suspension beam 3
7 lowers the device, and sets the limit switch LS10 for fork lowering and grounding stop and the limit switch LS4 for frame lowering emergency stop.
After confirming the grounding of the fork 21, the fork 21 is rotated outward from below the section steel 54 supported by the rootstock 53 by the rod extension operation of the fork rotation cylinder 9 until the limit switch LS7 for stopping the fork rotation end is activated. let Next, the screwdriver 10 and the drive device 11 operate the limit switch for stopping the fork rising end.
After the fork 21 is raised until the LS 12 operates, the hanging beam 37 is raised and the device is removed from the section steel 54.

(Effects of the Invention) As described above, the present invention allows a pair of hanging tools of a hanging beam to approach or move together, rotates a hanging frame, aligns the hanging load with a guide, and then moves two forks. The fork is placed under the suspended load by passing through the fork on both sides, and the suspended load can be stably supported through the fork, making handling work mechanically reliable, saving labor and improving safety. can be achieved. Furthermore, since it is sufficient to have a gap on both sides of the hanging load that is slightly larger than the width of the fork, the storage space for the hanging load can be significantly reduced compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing an embodiment of the present invention, and FIGS. 2, 3, 4, and 5 are cross sections taken along the lines ~, ~, ~, and Figure 6 is a right side view of Figure 1, Figure 7 is a schematic diagram showing the situation in which the device of the present invention is mounted on an overhead crane, and Figure 8 is a right side view of Figure 1.
The figure is a sectional view taken along the - line in Fig. 7, Fig. 9 is a plan view showing the arrangement of suspended loads with respect to the overhead crane, and Fig. 1
0, 11, and 12 are plan views for explaining the operation of the device of the present invention. 1... Hanging frame, 2... Fork support outer cylinder,
3...Fork support inner cylinder, 4, 5... Bearing, 6,
7, 8... Link, 9... Fork turning cylinder, 10... Screw jack, 11... Drive device, 13... Upper support protrusion, 15... Lower support protrusion, 16... Inclined surface, 17... Center alignment guide, 18... Frame rotation cylinder, 20... Fork support rod, 21... Fork, 23... Hanging tool, 31, 32... Link, 33... Trolley, 3
5... Female threaded portion, 36... Universal joint, 37... Hanging beam, 39, 40... Threaded rod, 41... Drive device, 44... Overhead crane, 45... Hanging wire,
46...Detection piece for detecting the upper end level of suspended load, LS1,
LS2...Limit switch for stopping the trolley moving end,
LS3...Limit switch for detecting the upper end level of a suspended load, LS4...Limit switch for frame lowering emergency stop, LS5, LS6...Limit switch for stopping frame rotation end, LS7, LS8...Limit switch for stopping fork rotation end, LS9, LS12
...Limit switch for stopping fork lifting end,
LS10...Limit switch for fork descent grounding stop, LS11...Limit switch for fork set confirmation.

Claims (1)

[Claims] 1. A pair of hanging tools that can approach and separate from each other in synchronization are provided on a hanging beam suspended by an overhead crane, etc., and a hanging frame is rotatably attached to the hanging tools,
At both ends of the hanging frame, a pair of centering guides having sloped surfaces extending downward and facing each other are provided, and at both ends of the hanging frame, forks for hanging loads extending in the horizontal direction are provided. A handling device characterized in that it is movable up and down and is suspended so that it can rotate.