JP2021102516A - Hanging jig for tubular object - Google Patents

Abstract

To provide a hanging jig for tubular objects, which is easy to manufacture and is inexpensive.SOLUTION: A hanging jig 10 for tubular objects has: a beam part 20 slung directly or indirectly on a crane hook; multiple arm parts 30 installed on the beam part 20 and arranged so as to surround a straight pipe 1 of the tubular object; and a claw part 40 installed detachably on the arm parts 30 and configured to receive a load of the suspended straight pipe 1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hanging jig for a tubular object.

Pipes used for steel pipe piles, steel pipe sheet piles, water and sewage pipes, etc. may be required to have a length of several tens of meters to several kilometers or more. However, it is practically difficult to manufacture or transport such a long pipe, so it is necessary to manufacture a standard length pipe material of several meters at the factory, carry it to the site by truck, and connect it. To construct a tube of a desired length.

By the way, such pipe materials are loaded and unloaded on the truck bed and moved at the construction site by a crane. At that time, as a hanging jig for a tubular object such as a pipe material, an article gripping tool as disclosed in Patent Document 1 is used.

The article gripper is formed to have at least one set of openable / claw portions and a body portion that supports the claw portions. Since the article gripping tool has a complicated mechanism such that the claw portion opens and closes around the support shaft for gripping the article, there is a problem that it takes time to manufacture and the manufacturing cost is high.

Japanese Unexamined Patent Publication No. 11-314879

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a hanging jig for a tubular object that is easy to manufacture and inexpensive.

The characteristic configuration of the suspension jig for a tubular object according to the present invention for achieving the above-mentioned object is a suspension jig for a tubular object, which is slung directly or indirectly on a hook of a crane. A beam portion, a plurality of arm portions provided in the beam portion and arranged so as to surround the tubular object, and a plurality of arm portions in between which serve as a storage space for the tubular object, and a plurality of arm portions detachably provided and lifted with respect to the arm portion. The point is that the claw portion is configured to receive the load of the tubular object.

According to the above configuration, the beam portion is hung from above the tubular object so that the tubular object is located between the arm portions, and the claw portion is attached to the arm portion. Since the load can be received by the attached claw portion, a complicated configuration such as an opening / closing mechanism of the claw portion axially supported by the body portion is not required as in the conventional article gripper. Therefore, it has become possible to provide a hanging jig that is easy to manufacture and inexpensive. The term "crane" in the description of the hanging jig according to the present invention includes not only a crane but also a derrick and a lifting device.

In the present invention, the arm portion is provided with a through hole from the outside to the inside of the accommodating space and diagonally downward, and the claw portion is provided with the accommodating space with respect to the through hole. It is preferable that the structure is such that it can be inserted freely from the outside to the inside of the.

According to the above configuration, the claw portion comes into contact with the tubular object simply by forming a through hole in the arm portion and inserting the claw portion into the through hole. When the tubular object is lifted, the load of the tubular object is applied to the claw portion, and the claw portion is pressed against the inner peripheral surface of the through hole, so that the claw portion is greatly displaced with respect to the through hole. Hateful.

If the tubular object is not provided with hanging bolts, a pillow may be provided between the tubular object and the mounting surface of the tubular object when attempting to half-hang or wrap the wire rope. It is necessary to secure a space for passing the wire rope. However, in the above configuration, the claw portion is inserted diagonally downward into the lower part of the outer peripheral surface of the tubular object, and the tubular object is held at the contact portion with the tubular object. There is no need to secure space.

In the present invention, the arm portion and the claw portion are provided with an extraction prevention mechanism for preventing the claw portion from coming out of the through hole when the claw portion is inserted into the through hole. It is preferable to have.

According to the above configuration, the pull-out prevention mechanism prevents the claw portion inserted into the through hole of the arm portion from coming out, so that the possibility that the claw portion will come out unintentionally is avoided.

In the present invention, it is preferable that the claw portion is configured so that the insertion length with respect to the arm portion can be changed.

According to the above configuration, the insertion length of the claw portion with respect to the arm portion can be changed according to the size of the tubular object, so that the tubular object can be held in a stable posture.

In the present invention, it is preferable that the arm portion is configured so that the mounting position with respect to the beam portion can be changed.

According to the above configuration, the mounting position of the arm portion with respect to the beam portion can be changed according to the size of the tubular object, so that the tubular object can be held in a stable posture.

In the present invention, the tubular object is composed of a single pipe material, the beam portion is configured to be dispositionable along the axial center of the pipe material, and the beam portion has at least two in the axial direction of the pipe material. At the place, the arm portions facing each other across the pipe material are arranged so as to surround the outer peripheral surface of the pipe material, and the claw portion in each of the arm portions contacts the outer peripheral surface below the axial center of the pipe material. It is preferable that it is arranged so that it can be used. At that time, the pipe material is preferably a straight pipe or a curved pipe.

According to the above configuration, a tubular body such as a pipe material is stably maintained in posture by claws attached to each of the arm parts facing each other with the pipe material in between, which are arranged at at least two places of the beam part. can do.

In the present invention, the tubular object is composed of a connecting pipe in which a plurality of pipe materials are connected, and the beam portion is configured to be dispositionable along the axis of the pipe material constituting the connecting pipe, and is formed on the beam portion. Is arranged so that the arm portions facing each other across the pipe material can surround the outer peripheral surface of the pipe material at at least two places in the axial direction of each pipe material, and the claw portion is arranged in each of the arm portions. It is preferable that the pipe material is arranged so that it can come into contact with the outer peripheral surface below the axis of the pipe material. At that time, the pipe material is preferably a straight pipe or a curved pipe.

For example, when a connecting pipe in a state where two pipe materials are connected is lifted, a load that is not originally expected may be applied to the connecting portion between the pipe materials. Since such a load is not preferable, it has been difficult to lift a plurality of pipe materials while they are connected in the past.

According to the above configuration, since each arm portion is arranged with its relative position fixed to the common beam portion, each pipe material constituting the connecting tube is arranged at at least two places of the beam portion. , It can be stably held by the claws attached to each of the arm portions facing each other across the pipe material, and at that time, the relative positions of the pipe materials constituting the connecting pipe are fixedly held. Relative misalignment of each pipe material does not occur. Therefore, even if the connecting pipe is formed by connecting a plurality of pipe materials like a connecting pipe, there is no possibility that an unexpected load is applied to the connecting portion. Since it is possible to lift a plurality of pipe materials in a connected state, it is possible to shorten the working time.

It is explanatory drawing of the hanging jig which concerns on this invention. It is explanatory drawing of the main part of an arm part. It is explanatory drawing of the hanging jig which concerns on another embodiment. It is explanatory drawing of the hanging jig which concerns on another embodiment. It is explanatory drawing of the hanging jig which concerns on another embodiment. It is explanatory drawing of the hanging jig which concerns on another embodiment. It is explanatory drawing of the arm part which concerns on another embodiment. It is explanatory drawing of the claw part which concerns on another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 discloses, as an example of a suspension jig for a tubular object according to the present invention, a suspension jig 10 for suspending a single tubular object, specifically, a straight pipe 1.

The hanging jig 10 includes a beam portion 20, a plurality of arm portions 30, and a claw portion 40. Each part of the beam part 20, the arm part 30, and the claw part 40 is formed by cutting or welding a steel material having an appropriate size and thickness, for example, a square steel pipe or a steel plate, according to the size and weight of the straight pipe 1. ing. At that time, ribs are provided in each part to reinforce it.

The beam unit 20 includes a main beam 21 arranged along the axis of the straight tube 1 and sub-beams 22 provided at both ends of the main beam 21 in the longitudinal direction so as to be orthogonal to the main beam 21. ..

The main beam 21 has a length of not more than half of the total length of the straight pipe 1 and not more than the total length. The main beam 21 is provided with eyebolts 23 at two locations in the longitudinal direction. The hanging jig 10 is slinged by passing a wire rope through the eyebolt 23 and hooking it on a hook of a crane.

As shown in FIG. 2, the sub-beam 22 is provided with an arm portion 30 facing downward. Therefore, the arm portions 30 provided on the same sub-beam 22 and facing each other across the straight tube 1 are arranged so as to surround the outer peripheral surface of the straight tube 1. The sub-beam 22 has a length sufficient to provide some clearance in addition to the accommodating space of the straight tube 1 formed between the arm portions 30 facing each other across the straight tube 1.

The arm portion 30 has a length equal to or greater than the radius of the straight pipe 1 and less than or equal to the diameter. The arm portion 30 is provided with a through hole 31 from the outside to the inside of the accommodation space and at an angle of about 45 degrees diagonally, for example, vertically. On the outward surface of each arm portion 30, a guide cylinder portion 32 that communicates with the through hole 31 and extends outward and diagonally upward is provided.

The claw portion 40 is provided at the insertion portion 41 that can be inserted into the through hole 31 via the guide cylinder portion 32 of the arm portion 30 and at the rear end of the insertion portion 41 in the insertion direction, and is not inserted into the guide cylinder portion 32. It is provided with a flange portion 42 having a possible size.

When the insertion portion 41 of the claw portion 40 is inserted into the through hole 31 via the guide cylinder portion 32 from the outside to the inside of the accommodation space and diagonally downward, the flange The portion 42 comes into contact with the guide cylinder portion 32, and further insertion of the claw portion 40 is restricted.

The actual usage mode of the hanging jig 10 configured in this way is as follows. Using a crane, as shown in FIG. 2, a hanging jig 10 is hung from above the straight pipe 1 so that the straight pipe 1 is accommodated in the accommodating space. To install. As a result, the claw portion 40 inserted into each of the arm portions 30 is arranged so as to be able to come into contact with the outer peripheral surface below the axial center of the straight pipe 1.

When the hanging jig 10 is lifted in this state, the load of the straight pipe 1 is evenly applied to each claw portion 40, and the straight pipe 1 is held by each of the claw portions 40. At that time, since the claw portion 40 is pressed against the inner peripheral surfaces of the through hole 31 and the guide cylinder portion 32, the claw portion 40 does not deviate significantly from the through hole 31.

As described above, the straight pipe 1, that is, the tubular material, is attached to each of the two pairs of arm portions 30 that are arranged at the two locations of the beam portion 20 and that face each other with the straight pipe 1 in between. The posture can be stably maintained by the one claw portion 40.

In the above-described embodiment, the hanging jig 10 when the single pipe material which is a tubular material is a straight pipe 1 has been described, but the hanging jig 10 for a tubular material according to the present invention has the following configuration. It is also possible to do.

For example, as shown in FIG. 3, the single tubular material may be a curved tube 2. In this case, the main beam 21 of the suspension jig 10 is configured in the same manner as described above, and the extending direction of the sub-beam 22 is determined by the arm portions 30 provided on the sub-beam 22 and facing each other with the curved tube 2 in between. It is arranged so as to be orthogonal to the axis of the portion of the curved pipe 2 to be held. As shown in FIG. 4, the angle of the sub beam 22 with respect to the main beam 21 may be adjustable.

Further, when the tubular object is a curved tube 2, the main beam 21 may be configured to be bent according to the bending of the axial center of the curved tube 2. In this case, the sub-beam 22 is arranged orthogonal to the main beam 21 at the position where the sub-beam 22 is provided. The main beam 21 may be configured to be appropriately bent along the axis of the curved tube 2.

Further, the tubular object is not limited to a single straight tube 1 or curved tube 2. The tubular object is, for example, a connecting pipe 3 formed by connecting two straight pipes 1 and 1 by welding, a flange joint, or the like as shown in FIG. 5, or a single straight pipe as shown in FIG. A connecting pipe 4 in which the pipe 1 and one curved pipe 2 are connected by welding, a flange joint, or the like may be used.

For example, in the case of the connecting pipe 3 shown in FIG. 5, the hanging jig 10 is configured as follows, for example. Here, a configuration different from that of the hanging jig 10 shown in FIG. 1 will be mainly described.

The beam portion 20 is arranged along the axis of the straight pipes 1 and 1 constituting the connecting pipe 3. At that time, the main beam 21 of the beam unit 20 has a length of not more than half of the total length of the connecting pipe 3 and not more than the total length. The main beam 21 is provided with sub-beams 22 at two locations in the axial direction of each of the straight pipes 1 and 1, and an arm portion 30 is arranged on each sub-beam 22 so as to surround the outer peripheral surface of the straight pipe 1. To. Therefore, each straight pipe 1 is surrounded by four arm portions 30. The four claw portions 40 provided on each of the arm portions 30 are arranged so as to be able to come into contact with the outer peripheral surface below the axial center of the straight pipes 1 and 1.

With such a configuration, the respective arm portions 30 are arranged so that their relative positions are fixed to the common beam portion 20, so that the straight pipes 1 and 1 constituting the connecting pipe 3 correspond to the beam portion 20. It is stably held by a total of four claws 40 attached to each of the arm portions 30 arranged at two locations for each of the straight pipes 1 and 1. At that time, since the relative positions of the straight pipes 1 and 1 constituting the connecting pipe 3 are fixedly held, the relative positional deviation of the straight pipes 1 and 1 does not occur.

Therefore, even if the tubular object is formed by connecting a plurality of straight pipes 1 and 1 such as the connecting pipe 3, there is no possibility that an unexpected load is applied to the connecting portion, for example, the welded portion or the joint portion. ..

Further, as shown in FIG. 6, if the straight pipe 1 and the curved pipe 2 are connected to each other by welding, a flange joint, or the like to form a connecting pipe 4, the suspension jig 10 is configured as follows. Here, a configuration different from that of the hanging jig 10 shown in FIG. 5 will be mainly described. In this case, the main beam 21 of the suspension jig 10 is configured such that the portion of the connecting pipe 4 corresponding to the curved pipe 2 is appropriately bent along the axis of the curved pipe 2. In this case, the sub-beam 22 is arranged orthogonal to the main beam 21 at the position where the sub-beam 22 is provided. The main beam 21 may be configured to be appropriately bendable along the axial centers of the straight pipe 1 and the curved pipe 2.

The number of pipe materials constituting the connecting pipe 3 and the connecting pipe 4 is an example. Therefore, the connecting pipe 3 may be configured by connecting three or more straight pipes 1, and the connecting pipe 4 may be configured by connecting three or more straight pipes 1 and curved pipes 2. May be good. In any case, as the number of the connecting pipes 3 and the pipe materials constituting the connecting pipe 4 increases, the beam portion 20 has an appropriate shape along the axis of each of the connecting pipes 3 and the connecting pipes 4. It suffices that at least four arm portions 30, and therefore four claw portions 40, are provided for each pipe material.

The suspension jig 10 for a tubular object of any of the above-described embodiments can further adopt the following configuration.

As shown in FIG. 7, the arm portion 30 may be configured so that the mounting position of the arm portion 30 can be changed by bolts and nuts with respect to the sub beam 22. Since the mounting position of the arm portion 30 with respect to the beam portion 20 can be changed according to the size of the tubular object, the tubular object can be held in a stable posture.

Further, the claw portion 40 may be configured so that the insertion length with respect to the arm portion 30 can be changed. Since the insertion length of the claw portion 40 with respect to the arm portion 30 can be changed according to the size of the tubular object, for example, the diameter of the straight pipe 1, the tubular object can be held in a stable posture.

Further, the arm portion 30 and the claw portion 40 are provided with an extraction prevention mechanism for preventing the claw portion 40 from coming out of the through hole 31 when the claw portion 40 is inserted into the through hole 31. May be good. The retaining mechanism is composed of a pin-shaped member that commonly penetrates the arm portion 30 and the claw portion 40 and a member that holds the pin-shaped member, and for example, bolts and nuts can be preferably exemplified.

As shown in FIG. 8, the claw portion 40 may be formed in a wedge shape having a narrow tip in the insertion direction and a thick rear end. In this case, it is preferable that the shape of the through hole 31 provided in the arm portion 30 also corresponds to the wedge shape. When the claw portion 40 is inserted into the through hole 31 from the outside to the inside of the accommodation space and diagonally downward, the claw portion 40 becomes thicker toward the rear end, so that insertion is restricted in the middle. Will be done.

The above-described embodiments are all examples of the present invention, and the description does not limit the present invention, and the specific configuration of each part can be appropriately modified and designed within the range in which the effects of the present invention are exhibited. is there.

1: Straight pipe 2: Curved pipe 3: Connecting pipe 4: Connecting pipe 10: Hanging jig 20: Beam part 21: Main beam 22: Sub beam 23: Eyebolt 30: Arm part 31: Through hole 32: Guide tube part 40 : Claw part 41: Insertion part 42: Flange part

Claims (8)

A hanging jig for tubular objects
A beam part that is slung directly or indirectly on the hook of the crane,
A plurality of arm portions provided in the beam portion, arranged so as to surround the tubular object, and having a space between them serving as a storage space for the tubular object.
A hanging jig for a tubular object having a claw portion that is detachably provided to the arm portion and is configured to receive the load of the suspended tubular object. The arm portion is provided with a through hole from the outside to the inside of the accommodation space and diagonally downward.
The hanging jig for a tubular object according to claim 1, wherein the claw portion is freely inserted into the through hole from the outside to the inside of the accommodation space. 2. The arm portion and the claw portion are provided with an extraction prevention mechanism for preventing the claw portion from coming out of the through hole when the claw portion is inserted into the through hole. A hanging jig for a tubular object as described in. The hanging jig for a tubular object according to claim 2 or 3, wherein the claw portion is configured so that the insertion length with respect to the arm portion can be changed. The hanging jig for a tubular object according to any one of claims 1 to 4, wherein the arm portion is configured so that the mounting position with respect to the beam portion can be changed. The tubular material is composed of a single tube material
The beam portion is configured so that it can be arranged along the axis of the pipe material.
The beam portion is arranged at at least two locations in the axial direction of the pipe material so that the arm portions facing each other across the pipe material can surround the outer peripheral surface of the pipe material.
The hanging jig for a tubular object according to any one of claims 1 to 5, wherein the claw portion is arranged so as to be able to contact the outer peripheral surface below the axial center of the pipe material in each of the arm portions. .. The tubular object is composed of a connecting pipe in which a plurality of pipe materials are connected.
The beam portion is configured to be dispositionable along the axis of the pipe material constituting the connecting pipe.
The beam portion is arranged at at least two locations in the axial direction of each pipe material so that the arm portions facing each other with the pipe material in between can surround the outer peripheral surface of the pipe material.
The hanging jig for a tubular object according to any one of claims 1 to 5, wherein the claw portion is arranged so as to be able to contact the outer peripheral surface below the axial center of the pipe material in each of the arm portions. .. The hanging jig for a tubular object according to claim 6 or 7, wherein the pipe material is a straight pipe or a curved pipe.

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