JP3072587B2 - Long object gripping swing hanging tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long object turning swivel used for loading and unloading a long object such as a mast of a building tower crane in a stock yard of the building tower crane. .

[0002]

2. Description of the Related Art Masts for building tower cranes are support columns (frames) used to stack several cranes to set the cranes at a desired height. Are stored in piles, etc., and are taken out of the stockyard and brought to the construction site when used. Note that these masts have a square or round cross-sectional shape, and also have various sizes, such as lengths, cross-sectional dimensions, and the like. In the past, many such masts were stored in a stock yard in a state of being piled up.When using this mast, hooks were manually applied to both ends of the mast, and slings were performed using wires and one One was loaded on a truck, transported to the site of use, and unloaded from the truck and picked up again at the site of use by a similar slinging operation.

[0003]

However, when loading and unloading such a mast, such a sling operation by human power must be carried out by raising the mast to a high place where many masts are stacked. It was a very dangerous operation, and it was sometimes stopped, especially on rainy and windy days. Also, such a slinging operation is a very inefficient operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-described problems. A mast for a tower crane for building that enables safe and efficient lifting work by eliminating dangerous sling work at high places. It is an object of the present invention to provide a long swinging tool for gripping a long object.

[0005]

In order to achieve the above-mentioned object, a long object gripping swivel hanger of the present invention has the following features. (1) It has an axis which can be hung by a hoist and extends in a longitudinal direction. A lifting tool main body including a lifting plate having a grip portion which is attached to both ends in the axial direction so as to be movable in the axial direction by a movement driving device and which can grip an end of a long object to be gripped; A swing propulsion device attached to the hanging device main body and configured to generate a propulsion force in a horizontal direction opposite to the direction intersecting with the axis of the hanging device main body. A configuration in which the gripper is engaged with each of the engagement portions at both ends of the long object so that the long object can be gripped and suspended.
At the same time, an anti-slip member is attached to the lower surface of the hanging tool body.
The anti-slip member is used to hold the grounding plate
Attached vertically to the top of a long object so that it can touch the ground
Hang it with a lifting machine and grab it.
When dropping above the object and grasping the object to be grasped with the lifting plate
The grounding plate for the object to be gripped is grounded on the upper surface of the object to be gripped, and
It was configured to prevent the body from turning

[0006]

[0007] ( 2 ) In the above-mentioned (1) long object gripping swivel hanger, the position of the engaging portion at both ends of the long object to be gripped is placed on the gripping portion of the lifting plate. An attachment having a grip portion having a shape that can be adapted to the shape or size is configured to be detachably attached.

( 3 ) Further, in the above-mentioned (1) or (2), the long object gripping swivel hanger, the gripping portions of the lifting plates at both ends of the hanger main body are the long object which is the object to be gripped. The structure is such that it is provided at a plurality of different positions on the lifting plate so as to be adaptable to the positions of both ends of the object or the engaging portions having different shapes or sizes.

[0009]

In the long object gripping swivel hanger of the above configuration (1),
A long object which is a long object to be grasped, for example, a long crane which is a lifting machine, is used to suspend a long object to be swung, and the swiveling blower is positioned just above an object to be lifted by a tower crane mast. And the like, to generate a propulsive force in a horizontal direction facing the hanging device main body, thereby turning the hanging device left and right in a top view, so that the axis direction of the hanging device coincides with the axial direction of the mast. When the swivel hanger is positioned directly above the object to be hoisted by the crane, the hanger plates at both ends of the swivel hanger are respectively moved to both end sides of the hanger by a moving drive device such as a hydraulic cylinder. It is opened and set at a position away from both ends of the mast of the object to be lifted.

In this state, the moving driving device is operated to move the two hanging plates toward the center of the hanging device, and the two hanging plates are closed to each other so as to approach both ends of the mast. The claw as a gripping portion attached to the lifting plate so as to sandwich both end surfaces of the mast with the upper plate is engaged with the engaging portions formed on both end surfaces of the mast and is hooked. And grab the mast. Thereafter, the swivel hanger is lifted by the crane and loaded on the truck.

After being placed on the truck bed, the lifting plate moving drive device is operated to move the lifting plates on both sides to both ends of the lifting device, and the lifting plates are opened to each other. Disengage the joint. Then, the mast to be lifted next in the stockyard is gripped and lifted by the same operation as described above, and loaded on the truck. Hereinafter, the same loading operation is repeated to load the truck. After that, they are transported to the site of use by truck. When unloading the mast from the truck at the site of use, a similar gripping action is carried out by a long object gripping swivel and the unloading is performed.

Thus, the positioning of the lifting tool with respect to the mast of the object to be lifted is performed by the turning propulsion device, and the work of gripping the mast is performed by the lifting device driven by the moving drive device. It is not necessary to perform a slinging operation by human power, for example, by hooking the end of the mast, and the mast can be gripped safely and efficiently. Furthermore, since the lifting plate is attached to the lifting device so as to be movable in the axial direction, even masts having different lengths can be gripped.

[0013] Then, the swivel hanger is hung above the mast to be hoisted by a crane and positioned above the mast to be hoisted. With the directions of
In a state where the longitudinal axis of the mast is aligned with the longitudinal axis of the lifting gear, the height of the grip of the lifting plate attached to the lifting gear and the engaging part of the mast to be lifted is set. It is lowered to the same height, and an anti-slip member such as a rubber plate on the lower surface of the holding plate is grounded to the upper surface of the mast. Then, even if the hanger suspended by the crane tries to turn left and right due to the influence of the wind or the like, it can be prevented by the frictional force between the anti-slip member and the upper surface of the mast. The state in which the direction of the mast and the direction of the mast are matched can be maintained. In this state, the moving drive device is operated to close the lifting plate, thereby smoothly engaging the gripping portion of the lifting plate and the engaging portion of the mast. The mast can be grasped smoothly with the lifting plate.

In the above configuration ( 2 ), the attachment is mounted using the grip portion already attached to the lifting plate, and the grip portion of the attachment is engaged with the engagement portion of the long object to suspend the attachment. Since a long object can be gripped and lifted by the upper plate, there is no need to remove the lifting plate from the lifting device body and replace it by preparing various attachments. Long objects can be lifted.

Also, by using the attachment, for example, when gripping objects of different sizes having similar engaging portions on the end surfaces, the lifting plate having a minimum width By attaching a gripping portion having a width suitable for the engaging portion of the object and forming the lifting plate on a lifting plate having a width corresponding to the width of the gripping portion, the minimum width is provided. When grasping a grasped object having a larger width than the engaging portion of the grasped object, use an attachment formed with a wider grasping portion to grasp the grasped object having a larger engaging portion. It is also possible to use a gripping portion that is formed to have a large width and that is adapted to the engaging portion of the object to be gripped having the large width without using a large lifting plate. In addition to the grip portion having a width suitable for the engagement portion of the small-width object to be gripped, When grasping the small-width objects to be gripped arranged side by side with the lifting plate, the wide grip portion may also grab the object next to the object to be gripped. The phenomenon that the lifting plate interferes with the next gripping object can be eliminated, and the lifting operation can be performed efficiently by preventing the gripping operation from being disturbed.

In the configuration of the above ( 3 ), the gripping portions are formed on the lifting plate in advance in accordance with the engaging portions having different shapes, positions or sizes of both ends of the gripped object (lifted object). A long object such as a mast having a different shape, position, or size of the engaging portion can be gripped by the same single lifting plate, and the work can be streamlined.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the drawings. Each of the drawings shows an embodiment of the present invention. FIG. 1 is a front view of a long object gripping swivel hanger, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a right side view of FIG. FIG. 5 is a front view taken along the line IV of FIG. 1 showing a lifting plate, and FIG. 5 is a right side view of FIG.

As shown in FIGS. 1 to 3, the long object gripping and swinging hanger has a swinging hanger main body A having an axis extending in the longitudinal direction.
And a turning propulsion unit B integrally attached thereto. The main body A of the revolving suspension main body A is formed by integrally connecting the center part of the main body A with its central part aligned with a joint 2 by a joint 2.
A slide shaft 3 formed to be connected to the left and right ends of the main body shaft 1 so as to have the same length as the main body shaft 1 and having a predetermined length, and an upper boss 31 sliding on the left and right slide shafts 3 and And a hanging plate 30 which is movably fitted, extends downward a predetermined length, and hangs down.

In the vicinity of the point where the slide shaft 3 of the main body shaft 1 is formed, a support boss 10 having a suspension fitting 11 mounted thereon is press-fitted and is integrally attached to the main body shaft 1.
The bracket 12 is attached to the lower part of the bracket. A guide rod 4 is mounted between the upper end of the upper portion of the support boss 10 on the slide shaft side and the end of the slide shaft, between the brackets protruding upward, with the slide shaft 3 and the axis parallel to each other.

The bracket 12 below the spindle boss 10
A trunnion-type hydraulic cylinder 13 as a lifting plate moving drive device is pivotally supported and mounted so that its axial direction coincides with that of the main body shaft 1 and the slide shaft 3 and is located directly below the main body shaft 1. The distal end of the piston rod of the hydraulic cylinder 13 is pivotally connected to a bracket 33 mounted on the inside of the upper part of the lifting plate 30 on the center side of the hanging body. As a result, the hydraulic cylinder 13 is actuated to extend and retract the piston rod so that the lifting plate 3
0 is supported on the slide shaft 3 and along the shaft boss 1
No. 0 is configured to be movable in the axial direction of the hanging body between the slide shaft end and the slide shaft end. At the upper end of the boss 31 of the lifting plate 30, two guide plates 32 project in parallel with each other so as to sandwich the guide rod 4, and the lifting plate 30 extends along the slide shaft 3. It is configured to prevent rotation of the slide shaft 3 around the axis when sliding.

A mast grounding plate 21 as a gripping grounding plate having a rectangular flat surface is positioned directly below the main body shaft 1 below the central portion of the hanging device main body, and is attached to the main body shaft 1 to be suspended therefrom. Is provided. In other words, the mast grounding plate 21 has a guide / support shaft 22 that extends vertically upward with a lower end fixed to the grounding plate 21 at the four corners of the rectangular mast grounding plate 21 and a stopper formed at the upper end. It is mounted on a guide tube 23 attached to the branch portion 5b of the support metal fitting 5 which is fixedly attached, and is supported so as to be movable vertically in a hanging state. A rubber plate 21a as an anti-slip member is attached to the entire lower surface of the mast ground plate 21.

With this configuration, when the lifting tool main body A is lowered to a predetermined position in parallel with the lifting tool main body A above the mast, which is the object to be lifted, the rubber plate 21a on the lower surface of the mast grounding plate 21 is raised. The mast is grounded on the upper surface of the mast to prevent turning of the hanging tool body A suspended by a crane, which is a lifting machine, due to wind and the like. can do.

As shown in FIGS. 1 to 4, a rectangular mast (1) 70 as an object to be grasped is provided on the lifting plate 30 as a slope 72 of a substantially triangular plate at four corners of the mast 70 as an engaging portion thereof.
(See FIG. 3) A claw 34 as a gripping portion for engaging and gripping with (see FIG. 3) is attached at a symmetrical position with respect to the vertical center line of the lifting plate 30. At the lowermost portion on the vertical center line of the lifting plate 30, another hollow portion is formed by hollowing out an interior for forming another grip portion (an additional grip portion is formed by attaching the attachment 60 or 90 described later). A cylindrical bracket 35 is attached. On both sides of the bracket 35, metal fittings 36 for mounting a retaining member for a pin type attachment 90 described later are mounted.

On the other hand, a turning propulsion section B is integrally attached to the turning hanging tool main body A at the rear portion of the turning hanging tool main body A. In FIGS. 1 to 3, the turning propulsion unit B is indicated by a two-dot chain line. The turning propulsion unit B is connected by a branching portion 5b of the support fitting 5 to which the base (frame) 40 is fixedly attached to the main body shaft 1 of the turning hanging tool main body A. The base 40 of the turning propulsion unit B is formed so as to extend in the same direction as the longitudinal direction of the main body shaft 1 of the turning hanging tool main body A. A turning blower 41 and a left turning blower 43 are mounted.

A hydraulic motor 42 for driving the blower 41 is mounted near the center of the base of the right-turning blower 41, and the blower 43 is positioned near the center of the base of the left-turning blower 43. A hydraulic motor 44 for driving is attached. The hydraulic motor 42 for use with the shaft end of the right-turn blower 41
V-pulleys 45 and 46 between the shaft ends of the left turning blower 43 and the shaft end of the hydraulic motor 44, respectively.
, A V belt 47 is wound therearound.

A gasoline engine 50 for driving a hydraulic pump is provided substantially in front of the center of the base 40, and a hydraulic pump 5 driven by the engine 50 is provided behind the gasoline engine 50.
1 is installed. An oil tank 53 is attached next to the engine 50, and a hydraulic unit 52 is installed behind the oil tank 53. The hydraulic unit 52 includes an electromagnetic switching valve for switching the driving of the left and right hydraulic motors 44 and 42, a pressure control valve for adjusting the hydraulic motor driving pressure, and a left and right for driving the lifting plate moving of the lifting tool body A. An electromagnetic switching valve and a pressure control valve for driving the hydraulic cylinder 13 and an oil pipe and an oil path for supplying pressure oil for controlling the operation of each device such as the hydraulic motors 44 and 42 and the hydraulic cylinder 13 are configured. The required hydraulic equipment such as a built-in manifold is provided.

A battery (rechargeable battery) 54 is installed at a position adjacent to the hydraulic unit 52, and serves as a power source for starting the engine 50 and operating the hydraulic motors 44 and 42 and the hydraulic cylinder 13 by operating the engine and operating the hydraulic control devices. ,
13 is used as a power source for a wireless device for remotely controlling the device 13. An operation panel / receiver panel 55 is provided on the right side of the engine 50. A hanging bracket 56 is attached substantially at the rear of the center of the base 40.

In the long object gripping swivel hanger constructed as described above, as shown in FIGS.
1 and R2 are respectively attached to the left and right suspension fittings 11, and another wire rope R3 is attached to the suspension
The hydraulic motor 42 is driven in a state of being lifted by a crane as a lifting machine as the final suspension, and the blower 4 for the right turn is driven.
2 is driven, wind is blown in the direction indicated by arrow C in FIG. 2, and a propulsive force is generated in the horizontal direction in the forward direction, which is opposite to the direction of arrow C perpendicular to the longitudinal axis of the hanger. As shown by an arrow D in the drawing, the swinging tool for grasping a ruled object is turned rightward in plan view. When the hydraulic motor 44 is driven to drive the left-turning blower 43, wind is blown in the direction indicated by arrow E in FIG. 2 and the direction is opposite to the direction of arrow E orthogonal to the longitudinal axis of the hanger. A propulsive force is generated in the horizontal direction in the forward direction, and the long object gripping and turning hanger is turned leftward in plan view as shown by an arrow F in the figure.

For example, in order to stop the rotation when the hanging tool is turning in the direction indicated by arrow D, the hydraulic motor 44 may be driven to drive the left-turning blower 43. To stop the turning when the tool is turning in the direction indicated by the arrow F, the hydraulic motor 42 may be driven to drive the blower 41 for right turning.

However, a mast which is a large number of objects to be gripped in the stock yard in the horizontal and vertical directions [Here, a case where the square mast (1) 70 is gripped as the mast will be described. ], The left and right lifting plates 30 are lifted by a crane to lift the left and right lifting plates 30 larger than the axial length of the mast 70 to be lifted, and a right-turn blower. 41 or the left swing blower 43 is driven to swing the hanger rightward or leftward in a top view so that the longitudinal axis direction of the hanger coincides with the longitudinal axis direction of the mast 70 to be lifted. Then, a long object is gripped by a crane and the swinging hanger is lowered from directly above the mast 70 toward the upper surface of the mast 70.

Then, the swinging hanger is rotated until the heights of the engaging portions 72 formed on both end surfaces of the mast 70 and the claw 34 as the gripping portion attached to the lifting plate 30 of the swinging hanger coincide with each other. When the is lowered, the mast ground plate 21, which is pivotally attached to the swinging hanger and is suspended, is placed on the upper surface of the mast 70 with the rubber plate 21 a on the lower surface thereof being grounded. In this state, the preparation for starting gripping is completed, but in this state, the lower surface of the mast grounding plate 21 is in contact with the upper surface of the mast 70, so that the swinging hanger suspended by the wire ropes R1, R2, R3 by the crane. If you try to turn by wind or other external force alone, it will be prevented. Therefore, the state in which the preparation for grasping has been completed can be once maintained.

When the left and right hydraulic cylinders 13 and 13 are driven to move the left and right lifting plates 30 to the inside of the lifting tool and close each other, the left and right claws 34 and 34 of the lifting plate 30 The mast 70 is engaged with and matched with the left and right slopes 72, 72 as the engaging portions, and is held by the lifting plate 30. FIGS. 1 to 3 show a state in which the lifting plates 30 on both sides are closed and the mast 70 is gripped. In the present embodiment, the mast 70 [square mast (1)] has substantially triangular ribs 71 attached to the four corners of both end surfaces, and the slopes 72 of the ribs 71 are used as engaging portions. Things. The ribs 71 serve as joint surfaces between masts when assembling a tower crane by stacking a plurality of masts 72 of the same shape and size in a building construction site in a vertical direction. As shown in FIG. 3, in this embodiment, the inclined upper surface 34a of the claw 34 of the lifting plate 30 (see FIG. 4) is engaged with the inclined surface 72 of the rib 71. In addition, the swing control and the gripping operation of the hanging tool can be remotely controlled by radio from the ground.

After the mast 70 is gripped by the swinging hanger in this manner, the swinging hanger is lifted by a crane and loaded on a truck. After being placed on the bed of the truck, the hydraulic cylinder 13 is operated to move the lifting plates 30 on both sides to both ends of the lifting tool to open the lifting plates 30 together, and the claws 34 and the mast 70 are opened.
Is disengaged from the engaging portion 72. Then, the mast 70 to be lifted next in the stockyard is gripped and lifted by the same operation as described above, and loaded on the truck.

In the lifting plate 30 of this embodiment, as shown in FIG. 3, the maximum width of the lifting plate 30 in the horizontal direction is smaller than the width of the rectangular mast (1) 70 to be gripped. In the process of suspending the swinging hanger with a crane and gripping the mast 70, the lifting plate 30 is used to lift the mast 70 to be lifted.
Is prevented from contacting or interfering with the mast 70 stored next to and stabilizing the gripping action.

Hereinafter, the same loading operation is repeated to load the truck. After that, they are transported by truck to a use site such as a building construction site. When unloading the mast 70 from the truck at the site of use, a similar gripping action is performed by the long object gripping and swinging hanger to unload the mast 70.

In the turning hanger of this embodiment, the directional positioning of the turning hanger with respect to the mast 70 to be lifted is performed by the right and left turning blowers 41 as the turning propulsion devices.
43, and the mast 70 is gripped by the lifting plates 30, 30 by the operation of the left and right hydraulic cylinders 13, 13 as a moving drive device. Then, it is not necessary to perform the slinging operation by human power, and the mast 70 can be safely and efficiently gripped.

Since the lifting plate 30 is attached to the lifting tool so as to be movable in the axial direction, the lifting plate 30 is configured so that even masts having different lengths can be gripped. Further, since the mast grounding plate 21 is attached to the hanger of this embodiment, the mast 70 and the hanger are maintained in the same state by the operation of the right / left swivel blowers 41 and 43, and the left and right sides are maintained. When the lifting plates 30 are moved and closed to grip the mast 70, the engaging operation between the claw 34 and the engaging portion 72 can be performed smoothly and easily.

In this embodiment, the case where the mast grounding plate 21 as the grounding object to be grasped is pivotally mounted on the hanging tool as described above is provided, but the mast grounding plate 21 is provided. Even without this, it is also possible to perform the gripping work by closing the lifting plates 30 on both sides while adjusting the operation of the right or left turning blowers 41 and 43 so that the directions of the hanging tool and the mast 70 coincide.

Further, in the above embodiment, two left and right swing blowers 4 are used as the swing propulsion units in the swing propulsion unit B of the swing hanger.
Although 3, 41 are mounted, it is also possible to mount only one of the swirling blowers and drive this in the forward and reverse directions with a hydraulic motor.

Next, the structure of the attachment (1) and the case where the mast is gripped using the attachment will be described with reference to FIGS. In addition, this attachment (1)
Is a rectangular mast (1) 70 whose end face is similar to the rectangular mast (1) 70 shown in FIGS.
The square mast (2) 70A (or 70) having a larger end face dimension (width × height) than the engagement part and a large width of the engagement part.
This is used when grasping B).

The structure of the attachment (1) will be described with reference to FIGS.
The main body member 61 is formed by bending both sides of a flat plate downward to form an oblique portion and forming the entire shape substantially in a figure of eight in front view.
And a leg member 62 having an inner cylindrical pin 63 attached to a central portion in a front view and both ends integrally joined to a main body member 61 when viewed from the front. A mast end surface contact plate 64a is attached along the oblique portion at a position behind the oblique portion, and a guide plate 65 is attached to join the side surface of the lifting plate 30 in the up-down direction. A mounting plate 66 having a connecting bolt hole 67 formed therein, which is in contact with the front surface of the lifting plate 30, is mounted between the lower portion of the base member and the leg member 62. An inner diameter enlarged portion 63a is connected to the front surface of the pin 63.

FIG. 9 shows a state in which the attachment (1) 60 thus configured is attached to the suspension plate 30.
As shown in FIG. The attachment (1) 60 is provided on the upper surface 34a of the hanging plate 30 by using the pawls 34, 34 already attached to the hanging plate 30 shown in FIGS.
Of the main body member 61 of the attachment (1) 60, and a hollow cylindrical bracket 35 attached to the lower center of the lifting plate 30 is used. The cylindrical pin 63 of the leg member 62 of the attachment (1) is fitted into the hollow hole and attached. Then, a bolt is inserted into the connection bolt hole 67 between the attachment plate 66 of the attachment (1) and the suspension plate 30 and tightened with a nut so that the attachment (1) does not detach from the suspension plate 30. Note that the attachment (1) can be removed from the suspension plate 30 when not in use.

By attaching the attachment (1) 60 to the suspension plate 30 in this manner, the upper surface 61a of the oblique portion of the main body member 61 of the attachment (1) 60 is formed as a new grip portion of the suspension plate 30. . The attachment (1) 60 has a larger end face dimension (width W × height H) than the square mast (1) 70 shown in FIGS. 1 and 3 and a width between the engaging portions 72. FIG. 11 shows a state in which the large square mast (2) 70A or 70B is gripped. Even when this attachment (1) 60 is used, the width of the attachment (1) 60 is formed smaller than the width W of the square mast (2) 70A or 70B, and the adjacent square mast (2) 70A or 70A when gripping. 70B can be prevented.

As described above, by using the attachment (1) 60 attached to the suspension plate 30,
It is not necessary to replace with a lifting plate having a different size, such as by removing from the slide shaft 3 of the hanging tool body A and manufacturing separately. As in the case of gripping 1), if the lifting plate 30 is formed in accordance with the rectangular mast (1) having the minimum width to be lifted by gripping the horizontal width of the lifting plate, the lifting plate can be used for a large-width suspension. When the rectangular mast (1) having the minimum width is to be gripped as shown in FIG. 3 without using the upper plate, the attachment (1) 60 is detached from the suspension plate 30 and attached to the suspension plate 30. By using certain claws 34, 34, when a large number of masts are laterally contacted and juxtaposed next to each other, for example, as in the case of using the lifting plate of the embodiment shown in FIG. Of the mast is also grabbed or hung Can plate 30 is prevented from hindering the action gripping and such contact or interfere with the mast of the both neighboring can perform gripping operations reliably and smoothly well efficiency.

Next, an embodiment in which a round mast is gripped by using another attachment (2) will be described with reference to FIGS. In FIG. 12, an attachment (2) is attached to the hollow cylindrical bracket 35 at the lower center of the lifting plate 30.
Flange 90a at the end of the hollow cylindrical main body
The figure shows a state in which a lifting pin 90, which is attached with a, is fitted and mounted. The tip end of the pin 90 is mounted to the center of the hanging body from the surface of the lifting plate 30 so as to protrude by a predetermined length, and the upper surface of the protruding portion of the pin 90 constitutes a grip portion. A split pin 91 is inserted radially outside the flange 90a of the pin 90 into a hole of the metal fitting 36 attached to the lifting plate 30 to prevent the pin 90 from coming off. When the attachment (1) 60 is not used, the lifting pin 90 as the attachment (2) is always attached to the lifting plate 30 and is different from the claws 34, 34 as the gripping portions. You may comprise as another grip part.

As shown in FIG. 13, the inner peripheral surface which is the engaging portion of the round mast 80 as the object to be gripped, as shown in FIG. 13, by the hanging plate 30 on which the pin 90 is attached as the attachment (2). The round mast 80 is grasped by being engaged with the top portion 81, and is lifted by a hanging tool.

With such a pin-structured attachment, even a cylindrical round mast of various sizes having different diameters can be gripped by one pin. Also, by using the bracket 35 to attach a pin 90 as an attachment (2) to the lowermost portion in the center of the suspension plate 30 so as to grip the round mast 80 as a gripping portion, the round mast 80 is positioned above it. Is prevented from contacting or abutting on the pair of claws 34, 34, which are gripping portions for the square mast, and the round mast 80 can be gripped smoothly.

Next, based on FIGS. 14 to 19, a case where the lifting plate is a lifting plate 30A having a shape different from that of the lifting plate 30 and a plurality of types of gripping portions are attached to a plurality of locations will be described. An example will be described. 14 to 19 are front views of the suspension plate shown in FIG. 4 and the description of the upper part is omitted.

As shown in FIG. 14, the lower portion of the lifting plate 30A of this embodiment has a bifurcated shape. A substantially rectangular claw 38 provided horizontally in front view is attached,
A pair of diagonal claws 34A, 34A are attached to the lower part on the left and right sides symmetrically with respect to the vertical center line. Claws 37, 37 are attached. And
As shown in FIG. 15 or FIG. 16, the lateral width of the forked leg portion of the lifting plate 30A of this embodiment has a width corresponding to the largest mast of the various rectangular masts to be lifted. ing. Although not shown, these three types of claws are inserted into the engaging portions of the mast and protrude by a predetermined distance in a direction perpendicular to the plane of FIG. 14 (longitudinal direction of the hanging tool) so that the mast can be grasped and lifted. It has been formed.

Then, using the revolving hanger to which the hoisting plate 30A is attached, a rectangular mast (1) 70 having the smallest end face dimension (width W × height H) [1. Is a mast having the same dimensions as the square mast shown in FIGS. 14, a pair of left and right diagonal claws 34A attached at an intermediate height, as shown in FIG.
34A is a rib 71 at the upper two corners which is an engagement portion of the mast 70.
Can be gripped by engaging with the inclined surface 72. FIG.
4 to 19, the claws of the gripping portions to be gripped by the mast are hatched.

The rectangular mast (2) 7 having an end face dimension (width W × height H) larger than that of the rectangular mast (1) 70
When the user grips 0A, as shown in FIG.
A pair of right and left claws 37, 37 attached to the lowermost stage of A are engaged with the lower part of the slope 72 of the rib 71 at the upper two corners of the mast 70A and the parallel part of the rib 71 connected thereto as the engaging part. You can grab them together.

Further, when gripping the square mast (3) 70B having the same end face dimensions (width W × height H) as the square mast (2) 70 shown in FIG. As shown in FIG. 16, a pair of right and left claws 37, 37 attached to the lowermost stage of the lifting plate 30A are used to grip the slopes of the upper two corner ribs 71 of the mast 70A as in the case of gripping the square mast (2) 70. The lower portion 72 and the parallel portion of the rib 71 connected to the lower portion 72 can be engaged with the engaging portion to be gripped. In this case, since the height of the rib 71 is small, the lifting plate 30A is provided with the rectangular mast (2) 70 shown in FIG.
It is located above as compared with the case of grasping.

On the other hand, when the round mast is gripped by using the revolving hanger to which the hoisting plate 30A is attached, it is performed as shown in FIGS. FIG. 17 shows a case in which the round mast 80A having the minimum diameter is gripped, and the claw 38 is attached to the end of the round mast 80A by using a horizontal and substantially rectangular claw 38 attached to the top of the lifting plate 30A. The top portion of the inner peripheral surface is
As it is engaged here. The nail 38
The length of the protrusion in the longitudinal direction of the hook is longer than the length of the pair of right and left claws 34A, 34A located below the claws 38, so that the end of the mast 80A contacts the end of the claws 34A. The claw 38 is formed so as to enter inside the axial direction (longitudinal direction) of the 80A.

Also, as shown in FIG. 18, when the round mast 80B having a diameter larger than the round mast 80A by a predetermined amount is gripped, the claw 38 is similarly used to engage the engaging portion 83 of the mast 80B. Combine. Then, as shown in FIG. 19, when grasping a round mast 80C having a diameter larger than the round mast 80B by a predetermined amount, an attachment (3) 100 is attached to the upper part of the claw 38, and this is engaged with the mast 80C. It is engaged with the joint portion 84 and grasped. By doing so, the lower claws 37, 3 on the outer peripheral surface on the end face side of the round mast 80C are formed.
7 can be prevented from interfering with the inner portion and smooth lifting can be performed.

As described above, a plurality of types of claws 3 are provided on the lifting plate 30A in advance as gripping portions in accordance with the engaging portions having different shapes, positions, or sizes of both end surfaces of the mast as the object to be gripped.
8, 34A, 37 are attached to different places, so that the square masts 70, 70A, 70B and the round masts 80A, 8A with different shapes, positions or sizes of the engaging portions are provided.
The long objects 0B and 80C can be gripped by the same single lifting plate 30A, and the work efficiency can be improved.

The lifting plate 3 shown in FIGS.
In the case of 0A, as shown in FIG. 3, FIG. 11, or FIG. 11, when a large number of masts as objects to be gripped are juxtaposed side by side, the mast placed next to the claw not to be used is also used. Although it may be grasped (for example, in the case shown in FIG. 14, when the square masts (1) are in contact with and arranged on both sides of the square mast 70, the lifting plates 30A on both sides are provided).
Is closed, and the claws 37, 37 located on the left and right sides of the lowermost portion when entering the end face of the mast 70 also enter the inside of the end face of the mast 70 at the same time as the claw 34A. Then the left and right masts are hooked and lifted. ), If the masts 70 are side by side, separated from each other,
It is possible to effectively grip and lift various objects to be gripped having engagement portions of different shapes, sizes and positions.

In the above embodiment, the case where the gripping object of the long object is the mast for the tower crane has been described. However, the present invention is applicable to various other different long objects.

[0058]

As is evident from the above description, the long object gripping swivel hanger of the present invention has the following excellent effects.

According to the first aspect of the present invention, the directional positioning of the lifting tool with respect to the object to be gripped, for example, a mast for a tower crane, is performed by the rotary propulsion device.
Since the mast gripping operation can be gripped by the lifting plates on both sides by the operation of the moving drive device, for example,
Even if it is stacked in many layers, it is not necessary for workers to climb on the stacked mast and hook the end of the mast and perform sling work by human power, so it is safe. In addition, the mast can be gripped efficiently. Furthermore, since the lifting plate is attached to the lifting device so as to be movable in the axial direction, even masts having different lengths can be gripped.

The object to be gripped is attached to the main body of the hanging tool so as to be vertically movable so that the state of the hanging tool and the direction of the mast can be once maintained. Since the driving device is operated to close the lifting plates on both sides to engage the gripping portion of the lifting plate and the engaging portion of the mast, the mast can be smoothly gripped and lifted.

According to the second aspect of the present invention, the attachment can be attached using the grip portion already attached to the lifting plate, and another different long object can be grasped and lifted by the attachment. Therefore, it is not necessary to remove the lifting plate from the lifting tool main body and replace it, for example, by preparing various attachments, and it is possible to lift a long object having engaging portions of various sizes and shapes.

Also, by using the attachment, for example, when gripping objects of different sizes having similar engaging portions on the end surfaces, the lifting plate having the minimum width dimension By attaching a gripping portion having a width suitable for the engaging portion of the object and forming the lifting plate on a lifting plate having a width corresponding to the width of the gripping portion, the minimum width is provided. When grasping a grasped object having a larger width than the engaging portion of the grasped object, use an attachment formed with a wider grasping portion to grasp the grasped object having a larger engaging portion. It is also possible to use a gripping portion that is formed to have a large width and that is adapted to the engaging portion of the object to be gripped having the large width without using a large lifting plate. In addition to the grip portion having a width suitable for the engagement portion of the small-width object to be gripped, When grasping the small-width objects to be gripped arranged side by side with the lifting plate, the wide grip portion may also grab the object next to the object to be gripped. The phenomenon that the lifting plate interferes with the next gripping object can be eliminated, and the lifting operation can be performed efficiently by preventing the gripping operation from being disturbed.

According to the third aspect of the present invention, the gripping portion is formed on the lifting plate in advance in accordance with the engagement portions having different shapes, positions or sizes of both ends of the object to be gripped. ,
Long objects such as masts having different shapes, positions, or sizes of the engaging portions can be gripped by the same single lifting plate, and work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a long object turning swivel according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a front elevational view taken along a line IV in FIG. 1 showing a lifting plate;

FIG. 5 is a right side view of FIG.

FIG. 6 is a front view showing the attachment (1).

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

FIG. 8 is a right side view of FIG.

FIG. 9 is a front view showing a state where the attachment (1) is mounted on the suspension plate.

FIG. 10 is a right side view of FIG. 9;

FIG. 11 is a front view showing a state where a rectangular mast is gripped by a suspension plate to which the attachment (1) shown in FIG. 9 is attached.

FIG. 12 is a lower partial side view showing a state where another attachment (2) is attached to the lifting plate.

FIG. 13 is a front view showing a state where a round mast is gripped by a suspension plate to which an attachment (2) is attached.

FIG. 14 shows another embodiment of a hanging plate in which a plurality of types of claws are attached to a plurality of different places on differently shaped hanging plates, and the width and height dimensions of the hanging plate are different. FIG. 4 is a diagram showing a state in which the smallest square mast is gripped.

FIG. 15 is a view showing a state in which the lifting plate shown in FIG. 14 grips a rectangular mast having a larger width and height than the rectangular mast of FIG. 14 and a larger width of an engaging portion thereof.

16 is a diagram showing a state where the rectangular mast having the same width and height dimensions as the rectangular mast of FIG. 15 but having a small size of the engaging portion is gripped by the lifting plate shown in FIG. 14; .

17 is a view showing a state in which a round mast having a minimum diameter is gripped by the lifting plate shown in FIG. 14;

18 is a view showing a state in which a round mast having a larger diameter than the round mast of FIG. 17 is gripped by the lifting plate shown in FIG. 14;

FIG. 19 is a view showing a state in which a round mast having a larger diameter than the round mast of FIG. 18 is gripped by the lifting plate shown in FIG. 14;

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS A Swivel hanging tool main body B Swiveling propulsion unit 1 Main body shaft 2 Main body shaft joint 3 Slide shaft 13 Hydraulic cylinder (lifting plate moving drive device) 21 Mast grounding plate (gripping grounding plate) 30, 30A Lifting plate 31 Lifting Plate boss 34 Claw (gripping portion) 35 Hollow cylindrical bracket (for forming another grasping portion) 34A, 37, 38 Claw (gripping portion) 40 Turning propulsion unit base (frame) 41 Right turning blower (turning propulsion device) 43 Left-turning blower (turning propulsion device) 50 Engine 60 Attachment (1) [Frame structure] 70, 70A, 70B Square mast (grabbed object) 71 Mast end face rib 72 Rib slope (engagement part) 80 Round mast (covered) 81) Engaging part 80A, 80B, 80C Round mast (object to be gripped) 82, 83, 84 Engaging part 90 Attachment (2) [pin structure] 100 Attachment ( ) [Plate structure]

──────────────────────────────────────────────────続 き Continuing on the front page (72) Takayoshi Higashito, Inventor 4-1-1-13 Honcho, Chuo-ku, Osaka-shi, Osaka Inside Takenaka Corporation, Osaka Main Store (72) Inventor Mitsunori Nishimura Honmachi-4, Chuo-ku, Osaka-shi, Osaka No. 1-113 Takenaka Corporation Osaka Main Store (72) Inventor Katsuhiko Ansai 9-80 Mikawakita-cho, Fukushima-shi, Fukushima Fukushima Manufacturing Co., Ltd. (56) References JP-A-7-2485 (JP) JP-A-4-179695 (JP, A) JP-A-7-206374 (JP, A) JP-A-59-74987 (JP, U) JP-A-5-95977 (JP, U) JP-A 62-1557884 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66C 1 / 10,1 / 28,1 / 30 B66C 1 / 42,1 / 44,13 / 08

Claims (3)

(57) [Claims] An elongated object which has an axis which can be suspended by a hoist and which extends in a longitudinal direction, and which is attached to both ends in the axial direction so as to be movable in the axial direction by a movement driving device, and which is a long object to be gripped. A hanging body provided with a lifting plate having a gripping portion capable of gripping an end of an object, and a propulsion force generated in a horizontal direction opposite to the axis of the hanging body attached to the hanging body. A swing propulsion device that engages the gripping portions of the respective lifting plates at both ends of the hanging tool main body with the respective engaging portions at both ends of the long object to grip and suspend the long object. The lifting device body has a slip-preventive member on the lower surface.
The anti-slip member covers the grounding object to be gripped
Move vertically so that it can touch the top of a long object
The hanging body is suspended by a lifting machine.
Lower the object above the object to be gripped, and grasp the object
The grounding plate of the object to be gripped on the upper surface of the object to be gripped.
A long object gripping and swinging hanger characterized in that it is configured to prevent rotation of the hanger main body . 2. An object to be gripped is provided on a gripping portion of the lifting plate.
Suitable for the position, shape or size of the engaging portions at both ends of the long object
Attachment with a grip that has a shape that can fit
Claims characterized in that it can be detachably attached.
Item 2. A long object turning swivel according to Item 1. 3. A gripping portion of a lifting plate at both ends of the lifting tool main body.
Is the position, shape or position of both ends of the long object to be grasped.
Has different lifting plates so that it can be
Claims characterized by being provided at a plurality of positions.
3. A long object turning swivel according to 1 or 2.