JP2517995Y2 - Pipe hanger - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pipe lifting tool used when a metal, plastics or concrete pipe used in various industries is transported by a crane, and is particularly rigid. Suitable for transporting long steel pipes of high cost, and strengthening the mounting base of the telescopic cylinder in consideration of the weight saving of the lifting equipment. Furthermore, the stirrup hook is suitable even for cylinders with relatively small output. The present invention relates to a pipe suspending tool capable of preventing the detachment of a pipe and preventing the telescopic cylinder from being damaged due to a suspending load of the pipe hanging on the pipe suspending wire rope.

[Conventional technology]

There are many purposes in various industries, such as various gases,
Many pipes of various materials and forms are used for liquid transportation and structural materials, but large cranes are often used for pipe manufacturing, mounting, transportation, storage, etc. Various pipe hangers have been devised to improve the safety and efficiency of the.

For example, Japanese Patent Publication No. 51-47219 discloses a lifting tool that automatically suspends and suspends the hanging rope from the pipe by an arm expansion / contraction device when the pipe is lifted by a hanging rope having a hook hook suspended on a beam hook. (Hereinafter referred to as "A device") is disclosed in Japanese Patent Laid-Open No. 52-1.
In 33653 publication, a self-propelled hook car is attached to the suspension beam,
A device for automatically slinging a pipe (hereinafter referred to as device B) has been proposed.

[Problems to be solved by the device]

The inventors of the present invention have been engaged in the work of transferring various pipes, in particular, large diameter long steel pipes (hereinafter simply referred to as pipes) using an overhead traveling crane. I found that I couldn't find a suitable device to transfer it.

For example, the device A is an efficient device for sprinkling a few pipes having a relatively small diameter as in the embodiment, but the device becomes complicated when a large number of large pipes are targeted. At the same time, there is a problem that the operation becomes difficult.

Further, the device B is a device that is capable of automatic slinging regardless of the pipe size and has excellent labor-saving effect. However, this device also requires complicated equipment in order to transfer many pipes simultaneously. There are also many problems with remote operation, such as the difficulty of synchronous lifting work.

The "crane hoist" in Japanese Utility Model Publication No. 61-119579 has
In FIG. 1 and FIG. 2, a cubic cylinder holder provided on a cylindrical column is used as a mounting member for the telescopic cylinder. However, when the suspended object has a large weight, structurally, A large load is applied to the base of the telescopic cylinder fixed to the side surface of the cylinder holder, which may cause damage such as cracking in the fixed portion.

In addition, since the telescopic cylinder of this conventional means directly supports the guide arm that supports the pipe suspension wire rope from the inside at the tip of the rod, the horizontal direction of the wire rope depending on the suspended object during suspension. Most of the load is applied to the rod, which causes the cylinder to break unless a large telescopic cylinder, which is considerably heavy and expensive, is used.

In addition, in the "Sliding wire rope" of Japanese Utility Model Publication No. 59-30073, the hung rope is narrowed inward by a spring so that the pipe hanging wire rope does not come off from the object to be hung. However, in this case, since only the elastic force of the spring is used, the engaging force is weak, and there is a risk that the spring will stretch and the rope will come off and the suspended object will drop due to shaking during suspension transfer. Included.

The purpose of the present invention is to have a simple structure and low equipment cost, and it is possible to transfer not only individual pipes but also many pipes simultaneously and safely and efficiently. It is intended to provide a pipe hanger in which the slinging work can be easily performed, the stirrup hook once attached can be prevented from coming off, and the slinging work can be labor-saving.

[Means for solving the problem]

The pipe hanger according to claim 1 according to the above object,
A crane hook hanging metal fitting is provided on the upper surface, a frame-shaped telescopic cylinder bearing metal fitting having a cross beam is further provided at the center of the lower surface, and wire hooks are provided at both ends, and the telescopic cylinder bearing metal fitting is provided. A horizontal suspension beam having guide arm bearing fittings provided between the wire rope hooks, and a stirrup-shaped hook attached to the tip of each of the wire rope hooks, and the wire rope hooks are suspended so as to be freely detachable. A pipe-hanging wire rope, a pair of guide arms that are bent in a V shape toward the center of the horizontal suspension beam, and are pivotally attached to the respective guide arm bearing fittings, and the pair. Each of which is fixed to the tip of the guide arm, and slidably contacts the pipe suspension wire rope from the center side of the horizontal suspension beam. , A guide for guiding each of the pipe suspension wire ropes, a hook disengagement prevention spring stretched between the guide and the stirrup hook, both sides of the telescopic cylinder bearing fitting and each of the guide arms. The pipe-hanging wire ropes are axially attached to the bent portions, respectively, and when extended, urge the pipe-hanging wire ropes outwardly through the guides, and when shortening, the guides are separated from the pipe-hanging wire ropes, and the stirrup-shaped hooks are provided. And a telescopic cylinder for urging the inside of the hook via the hook detachment prevention spring.

A pipe hanger according to a second aspect is the pipe hanger according to the first aspect, wherein the guide is a rod-shaped body.

The pipe suspension according to claim 3 is the pipe suspension according to claim 1, wherein a plurality of pipe suspension wire ropes are attached to each wire rope hook, and the guide individually separates the respective pipe suspension wire ropes. It is composed of a frame-shaped guide that guides to, and a hook detachment prevention spring is arranged in parallel for each wire rope for pipe suspension.

A pipe hanger according to a fourth aspect is the pipe hanger according to the first aspect, wherein a part or the whole of the guide is made of an elastic body that is deformable.

The pipe hanger according to a fifth aspect is the pipe hanger according to the third aspect, wherein a part or the whole of the frame-shaped guide is formed of an elastic body.

[Action]

INDUSTRIAL APPLICABILITY The pipe lifting device of the present invention has a horizontal suspension beam provided with a crane hook hanging metal fitting on the upper portion, so that it can be easily hung and removed from the hook of an overhead traveling crane, for example.
Store and store in the desired location, move quickly if needed,
Can be used.

Further, since wire rope hooks are attached to both ends of the horizontal suspension beam, it is possible to freely hang and remove a desired number of pipe suspension wire ropes in accordance with the number of pipes to be transferred to enhance transport efficiency. .

Further, since the horizontal suspension beam is provided with a telescopic cylinder bearing fitting in the center of the lower surface and further has a structure for attaching a guide arm bearing fitting between the wire rope hook and the telescopic cylinder bearing fitting, the extension cylinder and the guide arm can be attached and detached. Is easy to perform and maintenance is easy.

Next, the base end of the guide arm is rotatably attached to the guide arm bearing fitting, and a telescopic cylinder is mounted between the guide arm and the telescopic cylinder bearing fitting. Since a guide for slidably abutting and guiding the pipe suspension wire rope from the center side of the horizontal suspension beam is fixed to the guide arm, the guide arm is centered on the guide arm bearing metal fitting due to expansion and contraction of the telescopic cylinder. As a guide, so as to freely swing the pipe suspension wire rope through a guide in a direction that is a combination of the horizontal and vertical directions, that is, in an oblique direction, and through the stirrup hook of the pipe suspension wire rope to the pipe. You can freely hang it.

Further, in the present invention, the telescopic cylinders as the operation sources are rotatably pivotally mounted at their base ends to telescopic cylinder bearing fittings mounted at the center of the lower surface of the horizontal suspension beam, and at the other end are mounted on the guide arms. Since the guide arms can be operated symmetrically in synchronism with each other, work efficiency is high and safety is high.

Moreover, since the telescopic cylinder bearing fitting is in the shape of a frame having a horizontal beam, a great rigidity can be obtained as a machine base.

When suspending the pipe, shorten the telescopic cylinder and pull the guide arm toward the center of the horizontal suspension beam.
This pulls the hook detachment prevention spring in the same direction, and positively prevents the stirrup hook from coming off the pipe.

The guide is fixed to the tip of the guide arm as described above, and is configured to guide the pipe suspension wire rope slidably. Therefore, when the pipe is unhooked, the guide is twisted to the pipe suspension wire rope. There is no danger of causing damage such as kinks, kinks, and kinks. Furthermore, when lifting, it withstands the acting force transmitted from the pipe, maintains the rope position, accurately holds the pipe transportation posture, and smoothly moves to the desired place. It can be transferred.

In addition, since a hook disengagement prevention spring is stretched between the guide and the stirrup-shaped hook, tension is generated between the stirrup-shaped hook and the pipe during hoisting work. There is no risk of the stirrup hook coming off and the pipe falling.

Furthermore, when the pipe is suspended, the telescopic cylinder is shortened, and the pipe suspension wire rope that receives the pipe suspension load separates from the guide that has rotated in the central direction of the horizontal suspension beam and becomes in a non-contact state. Since the pipe suspension wire rope is entirely received and the guide arm is not subjected to the load, the fear that the telescopic cylinder is broken by the pipe suspension load is eliminated.

Next, when hoisting a pipe, use a plurality of pipe hoisting wire ropes, and if you use a frame-shaped guide that individually guides them individually, use the pipe hoisting wire rope to hang the hanging pipe. There is no risk of causing damage such as twisting, crimping, or kinking. Furthermore, during lifting, it withstands the horizontal component force transmitted from the pipe in particular, and while maintaining the horizontal transporting posture of the pipe accurately, Can be transferred to a place.

Furthermore, if a part or all of the guide is made of a deformable elastic body such as a spring or rubber,
Since there is very little risk of damaging the rope when it comes into contact with the pipe suspension wire rope, maintenance costs can be greatly reduced.

Therefore, the guide arm may be formed as an integral body as described above, or may be configured as an articulated type. For example, it is possible to design it appropriately such as a link arm form consisting of original and follower arms and a tension wire, both can be freely rotated and are easy to operate, and the guide function is high.

〔Example〕

FIG. 1 is a schematic front view of a pipe hoisting tool according to an embodiment of the present invention. 1a and 1b are crane hook hanging metal fittings fixed to an upper surface 2a of a horizontal hoisting beam 2, and 3 is a horizontal hoisting beam 2 thereof. Telescopic cylinder bearing fittings fixed to the center of the lower surface 2b, 4a and 4b are wire rope hooks fixed to both ends of the lower surface 2b of the horizontal suspension beam 2, and 5a and 5b are centered around the telescopic cylinder bearing fitting 3. The guide arm bearing fittings fixed between the wire rope hooks 4a and 4b, respectively.

Now, the pipe hanging wire ropes 6a, 6b have stirrup hooks 7a, 7b at the tip, and the wire rope hooks 4a,
It is suspended so that it can be hung and removed from 4b, and the guide arm
8a and 8b are rotatably attached to the guide arm bearing fittings 5a and 5b, and the pipe suspension wire ropes 6a and 6b are attached to the ends of the pipe suspension wire ropes 6a and 6b at the center side of the horizontal suspension beam 2, that is, the pipe 12 to be transported. Frame type guides 9a, 9b are fixedly attached to slidably abut and guide from the center side in the length direction.

Further, 10a, 10b is a hook disengagement prevention spring stretched between the frame-shaped guides 9a, 9b and the stirrup hooks 7a, 7b,
Reference numerals 11a and 11b denote telescopic cylinders engaged between the telescopic cylinder bearing fitting 3 and the guide arms 8a and 8b.

FIG. 1 shows the state immediately before lifting the pipe 12 to be conveyed. From this state, the extension arms 11a and 11b are actuated in the direction of contraction and the guide arms 8a and 8b are rotated as shown in FIG. When moved, the pipe-hanging wire ropes 6a and 6b approach the center of the transported pipe 12 in the longitudinal direction, so that the slinging operator can easily attach the stirrup hooks 7a and 7b to the transported pipe 12.
It can be hung on the pipe end.

Further, at this time, the tension caused by the hook disengagement prevention springs 10a and 10b acts on the stirrup hooks 7a and 7b, so that the hooks can be reliably hooked.

In this way, the pipe hanging device of the present invention simplifies the construction of the device by allowing the hook removing work to be performed manually, but the hook removing work, which is likely to be dangerous, can be automatically performed. The main point is to improve the practical efficiency and safety of the.

FIG. 3 shows that the telescopic cylinders 11a and 11b are actuated in a further contracting direction to rotate the guide arms 8a and 8b to loosen the constraint of the pipe suspension wire ropes 6a and 6b by the frame-shaped guides 9a and 9b. It shows a state in which the transported pipe 12 is lifted, and in this posture, since the frame-shaped guides 9a, 9b further approach the center of the transported pipe 12 in the longitudinal direction, the hook detachment prevention spring 10a, As a result of the tension exerted by the stirrup hooks 7a, 7b being strongly applied, the pipe 12 to be transported is not likely to fall off the stirrup hooks 7a, 7b and fall to the ground.

Moreover, since the telescopic cylinder bearing fitting 3 has a frame shape with a horizontal beam, a large rigidity can be obtained as a machine base, and especially the telescopic cylinders 11a and 11b are inclined downward to the outside at both ends of the telescopic cylinder bearing fitting 3. Since the rods are attached and taken in and out synchronously, when both rods are retracted while the pipe 12 to be conveyed is suspended, a large load is applied to both ends of the telescopic cylinder bearing fitting 3 in the outward opening direction, Since the cylinder bearing fitting 3 is of a frame shape connected by horizontal beams, even if a relatively thin and lightweight plate material is used, the load can be sufficiently received.

In addition, when suspending the transported pipe 12, the telescopic cylinder
The guide arms 8a and 8b are horizontally suspended by the beams 11a and 11b.
The pull-off prevention springs 10a and 10b are pulled in the same direction, and the pipe 12
Prevent the stirrup hooks 7a, 7b from coming off.

Furthermore, when the transported pipe 12 is suspended, the transported pipe 12
Pipe wire ropes 6a, 6b that receive the suspension load of
Is separated from the frame-shaped guides 9a, 9b rotated in the central direction of the horizontal suspension beam 2 by the telescopic cylinders 11a, 11b, that is, the pipe suspension wire ropes 6a, 6b are located in the inner space of the frame-shaped guides 9a, 9b. Therefore, it is possible to eliminate the fear that the pipe suspending wire ropes 6a and 6b receive all the load of the transported pipe 12 and the telescopic cylinders 11a and 11b are broken.

Next, when lowering the transported pipe 12 to the intended work floor, the operation of the telescopic cylinders 11a and 11b is carried out in the procedure of extending in the opposite direction to the above-mentioned lifting. At this time, the frame-shaped guides 9a and 9b push the pipe suspension wire ropes 6a and 6b outward to pull out the stirrup-shaped hooks 7a and 7b from the pipe 12 to be conveyed, but in this case, no manual labor is required.

Well-known pneumatic and hydraulic cylinders are used as the telescopic cylinders 11a and 11b, but their operating sources, pipes, and remote control devices are well known, and therefore their illustration and description are omitted.

Usually, the remote control is performed by the operator of the crane, but it goes without saying that wireless operation is also possible.

Next, details of the guide, the pipe hanging wire rope, and the hook detachment prevention spring will be described with reference to FIG.

In this example, the guide is formed in a frame shape, and the frame-shaped guide 9b is composed of horizontal frames 14a and 14b and vertical frames 15a to 15d forming windows 13a to 13c in this embodiment as shown in the figure. It is composed of a frame, and the windows 13a to 13c are pipe hanging wire ropes 6c, 6
Guide through d and 6e freely.

Further, the frame-shaped guide 9b is fixed to the contact plate 16 fixed to the front surface of the guide arm 8b via a holding metal fitting 17, and the lateral frame 14b and the contact plate 16 of the frame-shaped guide 9b are fixed. Support fittings 18a to 18c for the hook detachment prevention springs 10c to 10e are fixed.

In addition, at the base of the stirrup hooks 7c to 7e, hooks 19a to 1
9c is projected, and the hook detachment prevention springs 10c to 10e
Is stretched between the support fittings 18a to 18c and the hanging fittings 19a to 19c.

For the frame-shaped guide 9b, in addition to the use of a metal frame, a frame such as rubber or plastics and an elastic body such as a metal spring are appropriately adopted, but a part or the whole of the main body is a deformable elastic body. Since the possibility that the rope will be damaged when it comes into contact with the pipe suspension wire rope is extremely small, the maintenance cost can be greatly reduced.

Further, although the frame-shaped guide 9b is in the form of a rectangular window frame, it is not limited to this and may be round or oval, and a part of the main body, that is, the vertical frames 15a to 15d.
Flexible ropes may be used for the horizontal frames 14a, 14b, etc. The frame guide in the present invention is
It includes the above-mentioned configurations and materials.

Further, regarding the frame-shaped guides 9a, 9b, the windows 13a-1
Although the number of windows is 3 such as 3c, the number of windows is 1 or more, and the inventors have manufactured up to 8 and obtained good results.

Next, FIG. 5 is a perspective view illustrating a sliding guide condition of the guide 9c and the pipe suspension wire ropes 6f to 6i according to different embodiments of the present invention. Metal rod 21 with hooks 20a, 20b
And is fixed to the guide arm 8b via the support arm 22. In addition, the hook 20 for preventing the wire from coming off
It may be a simple long rod-shaped guide without providing a and 20b.

Thus, the guide has a function of slidably guiding the pipe suspension wire rope, and may be designed in an appropriate form without departing from the object of the present invention.

In FIG. 5, stirrup-shaped hooks 7f to 7i and hook detachment prevention springs 10f to 10i are the same members as those in FIG.

FIG. 6 is a schematic explanatory view showing a state in which the pipes 12a to 12e to be conveyed are suspended in parallel by using the frame-shaped guide 9d having five windows.

Next, FIG. 7 shows a guide pipe 26a, 26b including a source arm 23a, 23b and a follower arm 24a, 24b, and a tension wire 25a, 25b in another embodiment of the present invention. FIG. 7 is an explanatory view of an operating procedure showing a situation where 12 is lifted.

The guide arms 26a and 26b have a wide operation range functionally,
Further, by replacing the original arm 23a, 23b, the follower arm 24a, 24b, the tension wire 25a, 25b, etc. with those having an appropriate length, there is an advantage that pipes of various sizes can be transported.

[Effect of device]

In the pipe suspending device according to the present invention, the hooking work is performed manually, but it is possible to simplify the structure of the device by automatically performing the hook removing work which is highly dangerous and difficult to work. It has succeeded in improving the practical efficiency of work and increasing safety, and its simple structure and high safety make it easy to operate, and the equipment cost is low, and maintenance inspection is also possible. It is also easy, and since not only individual pipes but also many pipes can be transferred safely and efficiently at the same time, a great labor saving of slinging work is possible, and its economical effect is great.

Moreover, since the telescopic cylinder bearing fittings are frame-shaped with horizontal beams, a great rigidity can be obtained as a machine stand.Especially, the telescopic cylinders have both ends at the end of the telescopic cylinder bearing fittings when suspending a pipe. Although a large load is applied to the part, since the expandable cylinder bearing fittings are frame-shaped with horizontal beams connected to each other, the horizontal loads on both sides cancel each other out and a large bending moment is applied to each component of the expandable cylinder bearing fittings. Even if a relatively thin and lightweight plate material is used, the load can be sufficiently received.

Further, when the pipe is suspended, the telescopic cylinder pulls the guide arm toward the center of the horizontal suspension beam, which pulls the hook detachment prevention spring in the same direction to prevent detachment of the stirrup hook from the pipe.

Furthermore, when the pipe suspension wire rope that receives the suspension load of the pipe is shortened when the pipe is suspended, the guide that biased the pipe suspension wire rope outward is moved to the inside to suspend the pipe suspension wire rope. Since the wire rope and the guide are not in contact with each other, the pipe suspension wire rope receives all the load of the pipe and the guide arm does not receive the load, so the guide arm, telescopic cylinder and telescopic cylinder bearing fittings should be small and lightweight. You can

[Brief description of drawings]

FIG. 1 is a schematic front view of a pipe suspension according to an embodiment of the present invention, and FIGS. 2 and 3 are schematic front views for explaining the operation procedure of the pipe suspension according to the present invention. FIG. 5 is a partial perspective view of a guide, a wire suspension wire rope, and a hook detachment prevention spring according to the present invention, FIG. 6 is a schematic explanatory view of parallel suspension in the present invention, and FIG. 7 is an original arm and a follower arm. FIG. 8 is a front view showing a pipe lifting state by a link type guide arm including a pipe. [Explanation of symbols] 1a, 1b …… Crane hook hanging metal fittings, 2 …… Horizontal suspension beam, 2a …… Upper surface, 2b …… Lower surface, 3 …… Extensible cylinder bearing fittings, 4a, 4b …… Wire rope hook, 5a, 5b
...... Bearing arm for guide arm, 6a to 6i …… Pipe hanging wire rope, 7a to 7i …… Stirrup type hook, 8a, 8b …… Guide arm, 9a, 9b, 9d …… Frame type guide, 9c …… Guide , 10a
~ 10i …… Hook disengagement prevention spring, 11a, 11b …… Expansion cylinder, 12,12a ～ 12e …… Conveyed pipe, 13a ～ 1
3c ... window, 14a, 14b ... horizontal frame, 15a-15d ... vertical frame, 16 ...
… Abutment plate, 17 …… Holding bracket, 18a-18c …… Supporting bracket, 19
a to 19c …… Hooks, 20a, 20b …… Hook shape for preventing wire disconnection, 21 …… Stick, 22 …… Support arm, 23a, 23b ……
Master arm, 24a, 24b ... follower arm, 25a, 25b ... tension wire, 26a, 26b ... guide arm

Claims (5)

(57) [Scope of utility model registration request] 1. A crane hook hanging fitting is provided on the upper surface, a frame-shaped telescopic cylinder bearing fitting having a cross beam is provided at the center of the lower surface, and wire hooks are provided at both ends, and A horizontal suspension beam having guide arm bearing fittings provided between the telescopic cylinder bearing fittings and the wire rope hooks, and a stirrup hook attached at the tip, and hung on each wire rope hook. A pipe-hanging wire rope suspended so as to be detachable, and a pair of guide arms that are bent in a V shape toward the center of the horizontal suspension beam and are pivotally attached to the respective guide arm bearing fittings. And fixed to the tips of the pair of guide arms,
A guide slidably in contact with the pipe suspension wire rope from the center side of the horizontal suspension beam, and a guide for guiding the respective pipe suspension wire ropes, and tensioned between the guide and the stirrup hook. The hook disengagement prevention springs are axially mounted between the side portions of the telescopic cylinder bearing fitting and the bent portions of the guide arms, respectively, and when extended, the pipe suspension wire rope is urged outward through the guides. A pipe lifting device is provided with a retractable cylinder for urging the stirrup hook inward through the hook detachment prevention spring while separating the guide from the pipe hanging wire rope when shortened. 2. The pipe hanger according to claim 1, wherein the guide is a rod-shaped body. 3. A plurality of pipe suspension wire ropes are attached to each wire rope hook, and a guide is constituted by a frame-shaped guide for individually guiding each pipe suspension wire rope. Further, a hook detachment prevention spring is provided. The pipe suspending device according to claim 1, wherein the pipe suspending devices are arranged in parallel for each wire rope for suspending a pipe. 4. The pipe hanger according to claim 1, wherein a part or the whole of the guide is made of a deformable elastic body. 5. The pipe hanger according to claim 3, wherein a part or the whole of the frame-shaped guide is made of a deformable elastic body.