JPH10218553A - Hoisting accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suspend a concrete member with an anchor bolt in a simple form of undamaging the concrete member and being strong enough by forming a hanging shackle and a connecting piece integrally as one body, and installing a slit groove capable of a connective head installed in this anchor bolt and an induced notch part in the connecting piece. SOLUTION: A hoisting accessory 1 is integrally composed of a hanging shackle 2 hanging down from the hook of a crane and a connecting piece 3 as one body. This connecting piece 3 is provided with a slit groove 6 where a connective head 5 installed in the top of a solid bar-form anchor bolt embedded in concrete, and an induced notch part 7 at the one end, while a hole 9 is opened in a lowering auxiliary means 8 installed in a side face of the connecting piece 3, making it into a form being suspendible by a wire rope. With this constitution, the connective head 5 of the anchor bolt 4 is inserted into the induced notch part 7 of the connecting piece 3, and when the hanging shackle 2 is rotated, the connective head 5 installed in the anchor bolt 4 is made easily insertable into the slit groove 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger for hanging or transporting an anchor bolt having a mandrel and a coupling head, which is generally buried in concrete or the like, using a crane or the like.

[0002]

2. Description of the Related Art In general, when a concrete block or the like is suspended or 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 such a case, the work can be carried out efficiently if the concrete block or the like is formed into a shape that is easy to suspend by inserting a wire or a rope, but it is usually a simple block in many cases. In such a case, it takes time to fix the wire or the rope to the concrete block or the like, and 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 Application Laid-Open No. 54-118048. FIG.
1 shows an apparatus for transporting a finished concrete part disclosed in this publication. What is claimed is: 1. A device for transporting a finished concrete part comprising a fixed member surrounded by concrete, said fixed member comprising a detachable hook-shaped member for coupling with a lifting device in a recess of the finished concrete part. And a hook-shaped member 51 made of cast steel (having a different number from that of the official gazette) has a lower hook portion 52 and an upper eye portion 53, In this case hook part 52
Of the hook portion 52 for the annulus 55 to be gripped by the hook is curved about a center point 57 of curvature in the lower sphere. An eye portion 53 connected to the hook portion 52 and formed by a plate 59 provided with a through hole 58 for a lifting device, the device for conveying a finished concrete part 60 being characterized in that It is. Further, the annular portion 55 of the wire rope
Is formed as a part of the wire rope loop 61 and is embedded in the finished concrete component 60.

[0004]

The wire rope loop 61 buried in the finished concrete part 60 has an annular portion 55.
It is important not only to withstand the load but also to prevent deformation when the is suspended by the hook portion 52 of the hook-shaped member 51. However, the wire rope loop 61
Is a rope unlike solid anchor bolts and the like, and is easily deformed.
It is also difficult to bury them at zero. Even if it can be buried in a predetermined shape, the annular portion 55 of the wire rope is pulled along the shape of the hook portion 52 when the completed concrete component 60 is suspended, so that the annular portion 55 is The surrounding concrete finished part 60 is likely to be damaged or broken by losing tensile strength. Further, the annular portion 55 is in a state of being stretched and stretched, and it is not easy to repair the damaged portion of the concrete after the completion of the transportation.

[0005]

As a result of studying the detailed shape, the inventor has found that a simple shape that does not damage the concrete material can be suspended using a strong rod-shaped anchor bolt. We have come up with a mechanism for hanging brackets that can prevent deviation and operate safely.

First, the shape of the anchor bolt used in the hanging metal fitting of the present invention is a solid mandrel, and a coupling head for suspension is provided at an upper end thereof, and an anchor head for fixing concrete is provided at a lower end thereof. The coupling head and anchor head
The same shape eliminates misjudgment when embedding in concrete and simplifies the work. The shape of the hanging bracket is such that a hanging shackle for hanging with a hook such as a crane and a connecting piece for connecting to the connecting head of the anchor bolt are integrally formed, and the connecting piece is further provided with a connecting head provided on the anchor bolt. Are provided, and an introduction notch is provided. The width of the slit groove is a width in which the mandrel of the anchor bolt can be mounted, and the introduction cutout has a width in which the coupling head can be inserted. In addition, the material of the hanging fitting may be forged, but it is cheaper and easier to manufacture the casting, such as cast steel or spheroidal graphite cast iron, in order to integrally form the hanging shackle and the connecting piece.

Next, the hanging side of the hanging shackle with the hook is configured to have a round cross-section, and the connection side is configured to have a cross-sectional angle. Since the suspension side has a round cross section, it is easy to hang a hook such as a crane and the like, and the hook and the hook are well adapted. On the other hand, when the connection side is configured to have a cross-sectional angle, the value of the cross-sectional modulus can be increased as compared with a round cross-section, and deformation due to bending load or the like is less likely to occur.
When the magnitude of the load is small, both the cross section on the suspension side and the cross section on the connection piece side may be round or square. Further, it may be a U-shaped hanging shackle shape.

[0008] Further, a suspension assisting means is provided on the connecting piece.
If an auxiliary means is provided and the crane hook side and the connecting piece are auxiliary connected by a wire rope or the like, the hanging bracket alone falls even if the hanging shackle comes off from the hook due to unexpected causes during the work It is preferable from the viewpoint of safety.

Further, the connecting piece is provided with an anchor bolt deviation preventing mechanism. In this mechanism, the coupling head of the anchor bolt is inserted into the introduction notch of the connection piece, and after moving the coupling head to the slit groove side and moving to the introduction notch again, the coupling head deviates from the introduction notch. No mechanism.
By providing the deviation prevention mechanism, the anchor bolt does not come off from the connecting piece except when necessary, and it is safe.

[0010] A crimping means is further provided to the anchor bolt deviation prevention mechanism provided on the connecting piece. A coil-shaped spring may be used for the crimping mechanism, or a plate-shaped spring may be used. If the crimping means is provided so that the coupling head of the anchor bolt does not always deviate from the introduction cutout portion, there is no need to worry about unnecessarily coming off when the connecting piece and the coupling head are coupled, which is more secure. .

Further, the crimping means is constituted by a pin and a spring, and the pin is formed so as to be movable by a traction means. A slidable pin is incorporated in the connection piece, and this pin is normally pressed by a coil spring. When the coupling head of the anchor bolt is introduced into the introduction notch, the tip of the coupling head pushes up the pin and inserts the pin into the introduction notch against the pressing (pressing) of the spring. Further, a traction means for traction by a wire rope or the like is provided at the position of the pin opposite to the coupling head. The traction means opens a groove or a hole around which a rope or the like is wound around the tip of the pin, and pulls the rope or the like to make it movable. After a series of operations are completed, the operation of detaching the coupling head from the introduction cutout portion of the connection piece can be remotely operated by pulling the pin with the traction means against crimping of the spring, thereby improving workability.

Further, a bridging piece is provided on the hanging shackle,
Provide joint holes and suspension holes. When the hanging shackle is manufactured in a circular shape unlike the U-shape, the circular shape is naturally large for a large load, and the weight of the shackle portion becomes unnecessarily heavy, and deformation is liable to occur. In such a case, it is preferable that the basic shape be a U-shape or an elliptical shape rather than a circular shape. Further, a bridging piece is provided to separate the joint hole and the suspension hole. It is important to determine the position and shape of the bridge piece in consideration of the size of the hook of the crane and the like and the direction and size of the load applied to the shackle.

[0013]

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.

[0014]

Embodiment 1 FIGS. 1 to 4 show an embodiment of the present invention. FIG. 1 is a front view of the hanging fitting 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, and is a reduced view showing a state in which the coupling head of the anchor bolt is inserted into the cut-out portion of the joining piece. FIG. FIG. 9 is a reduced view of a cross section showing a situation at the time.

First, in FIG. 1 and FIG. 2, the hanging bracket 1 of the present invention comprises a hanging shackle 2 and a connecting piece 3 integrally. The connecting piece 3 has a slit groove 6 provided at the top of a solid rod-shaped anchor bolt 4 into which a coupling head 5 can be inserted, and one end thereof (in FIG. 1, a left side of the slit groove 6 and the anchor bolt 4) is notched. Part 7 was provided. Further, auxiliary means 8 for suspension are provided on the side surface of the connection piece 3 (the upper right side of the slit groove 6 in FIG. 1). A hole 9 was opened in the auxiliary means 8 so that the auxiliary means 8 could be suspended by a wire rope.

The basic shape of the hanging shackle 2 is such that the hanging side 2a by the hook has a circular cross section,
b was set to the cross-sectional angle. Since the hanging side 2a has a circular cross-section, it can be easily fitted with the hook of the crane, and the connecting side 2b has a cross-sectional angle. I have. In addition, since the entire handling weight of the small hanging bracket 1 is light, the section of the hanging shackle 2 may be all circular.

FIG. 3 is a view showing a state in which the coupling head 5 of the anchor bolt 4 is inserted into the introduction notch 7 of the joining piece 3. When the hanging shackle 2 is rotated rightward (the direction indicated by the arrow in the drawing) from the state shown in the figure, the coupling head 5 provided on the anchor bolt 4 can be easily inserted into the slit groove 6. FIG. 4 is a cross-sectional view showing a situation when the coupling head 5 of the anchor bolt 4 is inserted into the slit groove 6.
By suspending the suspension shackle 2 with a crane hook (not shown) in this state, the concrete material 10 can be easily transported, and the concrete material 10 around the anchor bolt 4 does not break or break. .

[0018]

Embodiment 2 FIGS. 5 and 6 show a second embodiment. FIG. 5 shows that the connecting piece 3 has an anchor bolt deviation prevention mechanism 11.
FIG. 6 is a cross-sectional view showing a state in which the crimping means 12 is provided.
FIG. 3 is a cross-sectional view showing a state where the pin 13 is pulled by a pulling means 15.

First, FIG. 5 will be described. On the hanging shackle 2 side of the connection piece 3, a mechanism 11 for preventing the anchor bolt 4 from deviating is provided. This departure prevention mechanism 11 is
And a retaining pin 16 provided on the introduction notch 7 side. The crimping means 12 is composed of a pin 13 and a spring 14 which can slide in a stepped cylindrical hole. Usually, the pin 13 is crimped to the retaining pin 16 by the crimping force (pressing force) of the spring 14. Structured. When the connecting piece 3 and the anchor bolt 4 are connected by this mechanism, the coupling head 5 removes the tip 13a of the pin 13 on the side of the retaining prevention pin 16 with the spring 1
4, the coupling head 5 provided on the anchor bolt 4 can be inserted into the slit groove 6 from the introduction cutout 7. Note that once the coupling head 5 moves to the slit groove 6 side, the tip 13a of the pin 13 is automatically pressed against the retaining pin 16 by the pressing force of the spring 14, so that the anchor bolt 4 deviates from the connection piece 3. Never.

FIG. 6 is a view showing a state in which the connecting piece 3 and the anchor bolt 4 are separated after a series of carrying operations are completed. First, when the operation is completed, the hanging shackle 2 is tilted leftward in the left direction of the connection piece 3 (FIG. 6 shows a state in which the connection shackle 2 is tilted leftward in the left direction). Next, pin 13
Is pulled by the pulling means 15 against the pressing force of the spring 14. By this operation, the tip 13a of the pin 13 is pulled away from the retaining pin 16, and the interference between the tip 13a and the coupling head 5 of the anchor bolt 4 is eliminated.
The positional relationship between the and the coupling head 5 is as shown in FIG.
That is, the state in which the prevention of the anchor bolt from deviating is released. In this state, when the traction means 17 previously connected to the suspension assisting means 8 is pulled, the coupling head 5 is released from the introduction notch 7 and the connecting piece 3 and the anchor bolt 4 are released.
The disconnection is completed.

Although the traction means 15 and 17 are operated by manually pulling them, they may be operated using a power source. Further, by alternately using the towing means 15 and 17 for towing, rotation of the hanging metal, release of prevention of departure, and disconnection of the connecting piece from the anchor bolt can be remotely controlled, thereby further improving work efficiency.

[0022]

Embodiment 3 FIG. 7 shows a suspension shackle 2 and a bridging piece 1 attached thereto.
8 is an embodiment in which the number 8 is provided. The basic shape of the hanging shackle 2 is a hanging side 2a for hanging with a hook such as a crane.
Was formed into a large arc shape so that the hook could be easily attached and detached, the connection side 2b was formed into a small arc shape in consideration of the size of the connection piece 3, and the cross section was round.

The bridging piece 18 is provided at a position where the size of the hanging portion hole 19 for attaching and detaching a hook of a crane or the like is larger than that of the joint portion hole 20 so that the hook can be attached and detached. Care was taken to make it easier. Hanging shackle 2
Since the basic shape of (1) is elongated in the hanging direction and the bridging pieces 18 are provided, it is lighter and stronger than a simple circular shape.

[0024]

As described above, according to the present invention, it is possible to suspend concrete using a simple and strong rod-shaped anchor bolt without damaging the concrete. Since the means is provided and the bridging piece is provided on the hanging shackle, it is possible to provide a hanging metal fitting which can perform work safely and smoothly.

[Brief description of the drawings]

FIG. 1 is a front view of a hanger according to a first embodiment of the present invention.

FIG. 2 is a side view of the hanging fitting of FIG. 1 of the present invention.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 and is a reduced view showing a state where a coupling head is inserted into an introduction notch;

FIG. 4 is a reduced cross-sectional view showing a state in which a coupling head is inserted into a slit groove.

FIG. 5 is a cross-sectional view showing a state in which an anchor bolt deviation prevention mechanism is provided on a connection piece in the hanging fitting according to the second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a state in which a pin of a crimping unit is pulled by a traction unit.

FIG. 7 is a side view of a hanging bracket according to a third embodiment of the present invention, in which a bridging piece is provided on a hanging shackle.

FIG. 8 is a front view showing a conventional apparatus for transporting a finished concrete part.

FIG. 9 is a front view showing an example of breakage of a finished concrete component after completion of transport according to the conventional technique.

[Explanation of symbols]

 1: Suspension fitting 2: Hanging shackle 2a: Hanging side 2b: Connecting piece side 3: Connecting piece 4: Anchor bolt 5: Coupling head 6: Slit groove 7: Introduction cutout 8: Auxiliary means 9: Hole 10: Concrete Material 11: departure prevention device 12: crimping means 13: pin 14: spring 15: traction means 16: retaining pin 17: traction means 18: bridging piece 19: suspension hole 20: joint hole

Claims (7)

[Claims] 1. A hanging shackle and a connecting piece are integrally formed, and the connecting piece is further provided with a slit groove capable of mounting a coupling head provided on an anchor bolt and an introduction cutout. Hanging metal fittings. 2. The hanging metal fitting according to claim 1, wherein the hanging side of the hanging shackle is configured to have a round cross section and the connecting side is configured to have a cross sectional angle. 3. The hanging metal fitting according to claim 1, wherein the connecting piece is provided with a hanging auxiliary means. 4. The hanging metal fitting according to claim 1, wherein an anchor bolt deviation prevention mechanism is provided on the connecting piece. 5. The hanging metal fitting according to claim 4, wherein a crimping means is provided on the anchor bolt deviation prevention mechanism provided on the connecting piece. 6. The hanging metal fitting according to claim 5, wherein the crimping means comprises a pin and a spring, and the pin is movable by a traction means. 7. The hanging metal fitting according to claim 1, wherein a bridging piece is provided on the hanging shackle, and a joint hole and a hanging hole are provided.