JPH10194662A - Hoisting accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoisting accessory to prevent deviation of an anchor bolt and to safely work by providing pressure contact means on an anchor bolt deviation prevention device. SOLUTION: A head end 12a of a pin 2 is drawn into the side of a spring 13 from the side of an introducing output part 8 and a sufficient space free to insert a connection head 6 of an anchor bolt 5 is secured on the introduction cutout part 8 by manually drawing the pin 12 in a direction to part from a pin 11 against pressure force of the spring 13 of pressure contact means 10. When the connection head 6 is inserted to a specified position, a connecting piece 3 is revolved thereafter. When the manually drawn pin 12 is released at a proper position in the middle of revolution of the connecting piece 3, the pin 12 stops in a state where it is pressure contacted on the stop pin 11 by pressure force of the spring 13, and the anchor bolt 5 is connected to the connecting piece 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor bolt generally having a mandrel and a connecting head embedded in concrete or the like, a connecting piece attachable to the anchor bolt, and a suspension for hanging the connecting piece by a crane or the like. It relates to the lowering shackle.

[0002]

2. Description of the Related Art In general, when a concrete block or the like is suspended and transported in civil engineering or construction work, it is generally carried out by a hoist or a crane using a wire or a rope. In this case, the work can be performed efficiently if the concrete block or the like is formed into a shape that can be easily suspended by inserting a wire or a rope. However, the work is usually simply a block. In such a case,
Not only does it take time to fix the wire or rope to the concrete block or the like, but it is dangerous from the viewpoint of safety.

[0003] As a remedy, various suspension methods and conveying devices have been proposed recently. One example is disclosed in Japanese Patent Publication No. 1-52315. FIG. 7 shows an apparatus for suspending a concrete production member in the lifting apparatus disclosed in this publication. An anchor bolt 51 having a mandrel 52 (replaced by the reference numerals in the figures of the publication), a coupling head 53 and provided for embedding in a concrete manufacturing member, and a spherical connecting piece 54 connected thereto are provided. The operating arm 55 projects from the connecting piece 54, and the connecting piece 54 has a slit groove 56 guided in an arc shape, and the cross section of the slit groove 56 matches the shape of the coupling head 53. And one end of the slit groove 56 is provided with an introduction notch 57 for the coupling head.
The mandrel 52 of the anchor bolt 51 is guided in the slit groove, the connecting piece 54 further having a joint hole 58 in the central region, which hole 58
And a hanging shackle 59 having a hanging hole for stopping the lifting device is inserted into the hole 58 in a joint shape. In this case, a slit groove 56 is formed. In a device for suspending a concrete production member on a lifting device, which can be closed by a movable safety pin 60 in the area of the introduction cut-out 57, the suspension shackle 59 is configured as a bridging shackle, and the bridging piece 61 of this shackle is Joint hole 62 and hanging hole 63
And the operating arm 55 is formed substantially integrally with the connecting piece 54 in a substantially tangential manner, and is constituted by two operating arm side walls 65.
0 is formed in an arc shape, is guided in the arc-shaped notch 64 in the connecting piece 54, and has a safety pin 60
Can be inserted between the operation arm side wall 65 during the release movement, and the operation arm 55 of the connection piece 54 and the safety pin 60 can be inserted.
The upper end has a dimension capable of swinging through the joint hole 62, and is a device for suspending a concrete production member on a lifting device.

[0004]

However, the safety pin 60 can simply be inserted between the operation arm side walls 65 during the releasing movement, and the operation arm 55 of the connecting piece 54 and the upper end of the safety pin 60 are It only has dimensions that allow it to swing through the joint hole 62. Therefore, when suspending
After inserting the coupling head 53 of the anchor bolt 51 into the slit groove 56 of the connection piece 54, the safety pin 60 is manually operated.
Is required to close the introduction notch 57 with the safety pin 60. On the other hand, if it is forgotten to close by the manual operation before the suspension, the safety pin 60 is useless and has no effect as a safety pin, which is a problem in terms of safety.

[0005]

As a result of research on the detailed shape, the inventor has found that the anchor bolt can be prevented from deviating without a manual closing operation before the suspension, and the suspension can be operated safely. I arrived at the mechanism of the tool.

The hanging tool of the present invention comprises a hanging shackle and a connecting piece, the connecting piece having a joint hole through which the hanging shackle can be inserted, a slit groove provided on an anchor bolt for mounting a connecting head, It comprises an introduction notch and an anchor bolt deviation prevention device, and the deviation prevention device is provided with a crimping means. The hanging shackle is used as a shackle for suspending the connection piece with a crane etc., and the connection piece is inserted into the slit groove through the cutout part by introducing the coupling head of the anchor bolt embedded in concrete etc. It allows suspension. In addition, the anchor bolt deviation prevention device is a device for preventing the coupling head of the anchor bolt from deviating from the connecting piece due to an accident or the like during suspension or transportation work.

The anchor bolt deviation prevention device comprises a crimping means and a stopper pin, and the crimping means comprises a movable pin and a spring. The anchor bolt deviation prevention device is composed of a crimping means and a fixing pin, and usually has a mechanism in which the pin of the crimping means is pressed (pressed) by a spring and received by the fixing pin. When the pin of the crimping means is crimped to the side of the pin with a spring, the coupling head of the anchor bolt is located at the position of the pin of the pin of the crimping means when the pin of the crimping means is crimped to the side of the pin. When the coupling head is inserted into the slit groove side from the introduction notch, the coupling head pushes up the position of the pin of the crimping means against the pressing of the spring, or The pin is pulled up by human power to a position where the coupling head can pass from the cut-out notch to the slit groove side.

Further, the pin of the crimping means is configured to be pulled up by the pulling means so that the pin can be pushed up against the pressing force of the spring. For example, a hole or a notch groove or the like is provided at the tip of the pin, and by pulling with a pulling means such as a rope, the deviation prevention release operation when the coupling head of the anchor bolt is pulled out from the introduction notch portion of the connection piece as a remote operation. Make it possible.

Further, the connecting piece is configured as a mechanism that can be rotated by the traction means. A protrusion or an open hole is provided near the anchor bolt deviation prevention device of the connection piece, and the connection piece is pulled by a pulling means such as a rope, and is rotatable around a joint hole provided at or near the center of the connection piece. The turning operation of the connection piece at the time of the departure prevention releasing operation can be remotely operated, and the work is further facilitated.

In addition, a bridging piece is provided near the center of the suspension shackle, and the joint hole and the suspension hole are provided separately. By providing the bridging pieces, the vicinity of the center of the suspended shackle is reinforced, and the shackle is less likely to be deformed. Further, by inserting a rope or the like used for the pin pulling means of the crimping means or the pulling means for rotating the connecting piece through the joint hole and pulling the hook, a hook such as a crane is inserted into the hanging hole and the suspension is hung. In this case, there is no need to worry about a rope or the like getting caught in the hook portion, and the structure is excellent in that the work can be performed more safely and smoothly.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail, but the present invention is not limited to these embodiments.

[0012]

Embodiment 1 FIGS. 1 to 6 show an embodiment of the present invention. FIG. 1 is a front view of the hanger of the present invention, and FIG. 2 is a side view of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 4 is a cross-sectional view showing a situation when the coupling head of the anchor bolt is inserted through the introduction notch of the connection piece, and FIG. It is sectional drawing which shows the state which pulled the pin of the crimping | compression-bonding means, and the connection piece by the traction means, respectively, in order to complete | finish the coupling head of an anchor bolt from the introduction cutout part of a connection piece. FIG. 6 is a side view of a hanging shackle in which a bridging piece is provided on a hanging shackle, and a joint hole and a hanging hole are separately provided.

1 to 3, a hanging tool 1 of the present invention comprises a hanging shackle 2 and a connecting piece 3. The basic shape of the hanging shackle 2 was a circle in cross section, and the shape as viewed from the side was an ellipse as shown in FIG. Because of the elliptical shape, hooks such as cranes can be easily inserted, and the weight can be reduced compared to a circular shape. The small hanging tool 1 may be circular because the handling weight is light.

Further, a joint hole 4 for inserting the hanging shackle 2 is opened at the center of the connecting piece 3. Connection piece 3 is joint hole 4
The connecting piece 3 can be freely rotated about the joint hole 4 because the connecting shackle 2 is assembled with the hanging shackle 2 with a sufficient hole size via the through hole.

Further, the connecting piece 3 has a slit groove 7 provided at the top of the anchor bolt 5 into which a coupling head 6 can be inserted, and a notch formed at one end thereof (upper left side of the slit groove 7 in FIGS. 1 and 3). 8 were provided. Further, the connection piece 3 has a joint hole 4.
A device 9 for preventing the anchor bolt 5 from deviating is provided on the opposite side of the slit groove 7 with the center as the center. The departure prevention device 9 comprises a crimping means 10 and a stopper pin 11, and the crimping means 10 comprises a pin 12 and a spring 13.
And the structure was pressed against the stopper pin 11. The pressing strength of the spring 13 is designed to be movable enough when the pin 12 is pulled by a human force in the opposite direction to the pressing pin 11 against the pressing force of the spring 13.

FIG. 4 is a cross-sectional view showing a state where the coupling head 6 of the anchor bolt 5 is inserted into the cutout 8 of the connecting piece 3. By manually pulling the pin 12 in a direction away from the stop pin 11 against the pressing force of the spring 13, the tip 12 a of the pin 12 is pulled from the introduction notch portion 8 side to the spring 13 side, and is inserted into the introduction notch portion 8. A sufficient space in which the coupling head 6 can be inserted is secured. After the coupling head 6 is inserted to a predetermined position, the connecting piece 3 is rotated next. That is, when the connection piece 3 is rotated clockwise by about 105 degrees in FIG. 4, the state shown in FIG. 3 is obtained. If the pin 12 that has been pulled by human power is released at an appropriate position during the rotation of the connection piece 3, the pin 12 stops by being pressed against the stop pin 11 by the pressing force of the spring 13, and the state shown in FIG. 3 is obtained.

When a series of hanging and carrying operations are completed, it is necessary to separate the connecting pieces 3 from the anchor bolts 5. FIG. 5 shows a state in which the pin 12 of the crimping means 10 and the connecting piece 3 are pulled by the pulling means 17 and 18 in order to remove the connecting head 6 of the anchor bolt 5 from the cutout 8 of the connecting piece 3 at this time. FIG. The connecting piece 3 in FIG. 5 is a position rotated about 105 degrees counterclockwise around the joint hole 4 from the position of the connecting piece 3 in FIG. In other words, this position is the same as the position when the coupling head 6 of the anchor bolt 5 is inserted into the introduction notch 8 of the connecting piece 3 at the start of the suspension work.

When the connecting piece 3 is manufactured in advance, FIG.
The projection 14 is provided integrally with the connection piece 3 at the position shown in FIG. On the other hand, pin 1
2 has a small hole 16 on the opposite side to the stop pin 11. After that, the holes 15 and the small holes 16 are provided with pulling means (ropes) 17 and 18 so that the pulling operation can be performed from a remote position.

After a series of hanging and carrying operations is completed, first, the pulling means (rope) 17 is pulled, and the connecting piece 3 is turned to a position close to the position shown in FIG. Thereafter, when the traction means 18 is pulled, the tip 1 of the pin 12 is opposed to the pressing of the spring 13.
2 a is pulled away from the locking pin 11. This operation eliminates interference between the distal end 12a and the coupling head 6 of the anchor bolt 5, and the position of the coupling head 6 is as shown in FIG. In this state, when the hanging shackle 2 is hung by a crane hook or the like (not shown), the separation of the connecting piece 3 from the coupling head 6 is completed.

A bridging piece 19 is provided on the hanging shackle 2,
FIG. 6 shows a shape in which the joint hole 20 and the suspension hole 21 are provided separately. The size of the bridging piece 19 is a hanging shackle 2
Although the shape and the size are hardly deformed, the shape is not particularly limited to this shape, and may be a flat plate having a constant width. The size of the joint hole 20 is such that when the connecting piece 3 is rotated in the direction perpendicular to the drawing, the pin 12 or the projection 1
4 has a size that does not interfere with the bridging piece 19. Further, the hanging portion hole 21 is sized so that it can be attached with a sufficient margin when a hook such as a crane is inserted. Since the pulling means (ropes) 17 and 18 for pulling or rotating the pins 12 of the crimping means 10 and the connecting pieces 3 provided on the connecting pieces 3 are inserted into the joint hole 20 and pulled, the hanging holes 21 Even if a hook such as a crane is inserted through the hook and suspended, there is no need to worry about the towing means (ropes) 17 and 18 being bitten by this hook.
The work was safe and smooth.

[0021]

As described above, according to the present invention, the crimping means is provided in the device for preventing the deviation of the anchor bolt, the crimping means is constituted by a pin and a spring, and the pin of the crimping means and the projection of the connecting piece are movable by the traction means. It is possible to provide a hanger that can be operated safely and smoothly because a bridging piece is provided on the hanging shackle.

[Brief description of the drawings]

FIG. 1 is a front view of a hanger of the present invention.

FIG. 2 is a side view of the hanger of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a cross-sectional view showing a state in which the coupling head is inserted into an introduction notch of a connection piece.

FIG. 5 is a cross-sectional view showing a state in which a pin and a connection piece of a crimping unit are pulled by a pulling unit.

FIG. 6 is a side view of a hanging shackle provided with bridging pieces.

FIG. 7 is a cross-sectional view of a conventional apparatus for suspending a concrete production member on a lifting apparatus.

[Explanation of symbols]

 1: Hanging tool 2: Hanging shackle 3: Connection piece 4: Joint hole 5: Anchor bolt 6: Coupling head 7: Slit groove 8: Introducing notch 9: Departure prevention device 10: Crimping means 11: Stop pin 12: Pin 12a: Tip 13: Spring 14: Projection 15: Hole 16: Small hole 17, 18: Traction means 19: Bridge piece 20: Joint hole 21: Suspension hole

Claims (5)

[Claims] 1. A hanging shackle and a connecting piece,
The connection piece comprises a joint hole through which a hanging shackle can be inserted, a slit groove in which a coupling head provided on an anchor bolt can be mounted, an introduction notch, and an anchor bolt deviation prevention device. A hanging tool provided with a crimping means. 2. The hanging tool according to claim 1, wherein the crimping means comprises a pin and a spring. 3. The hanging device according to claim 1, wherein the pin of the crimping means is movable by the traction means. 4. The hanging tool according to claim 1, wherein the connecting piece is configured to be rotatable by a pulling means. 5. The hanging tool according to claim 1, wherein a bridging piece is provided on the hanging shackle, and the joint hole and the hanging hole are provided separately.