JP6565647B2 - Hanging jig for slinging - Google Patents

Description

  The present invention relates to a hanging jig for slinging, and relates to a slinging jig for slinging that allows a crane hook to be attached and detached smoothly without contact by an operator during a slinging operation using two hanging wires. is there.

  At the site where steel products are manufactured, heavy objects are transported. The heavy objects to be conveyed include not only steel products but also manufacturing equipment such as spiral steel pipe forming stands. When transporting such a heavy object with a crane, if the shape of the heavy object is simple, one-point suspension is adopted, but a complicated shape is suspended by multi-point suspension. Multi-point hanging sling work is time-consuming work such as raising the center of gravity of heavy objects.

  Patent Document 1 discloses a construction iron plate that can be easily hooked to a hook without requiring a dangerous slinging work, but does not disclose the configuration of a sling hanging jig.

  Further, for example, Patent Document 2 and Patent Document 3 disclose a hanging jig for slinging when carrying a suspended load using two hanging wires. In Patent Document 2, when a hook is hooked on a transported object, a spring or rubber is pulled and stretched, so that the transported object is lifted without the hook being detached from the transported object. Further, Patent Document 3 is intended to suppress the application of excessive stress to the suspension frame and reduce the weight of the suspension frame.

JP-A-10-245805 JP 7-215656 A JP 2014-73908 A

  However, in the slinging work according to Patent Documents 2 and 3, when attaching the hanging wire to the crane hook, it is necessary to perform it manually.

  When the conveyed product is heavy, the lifting tool for conveying it is also heavy. For example, when transporting a forming stand of a spiral steel pipe to the pipe making process, two suspension tools may be used as a suspension for transportation in accordance with the structure of the forming stand. Each of them has a weight of, for example, 20 kg or more, and it is very hard work to lift them and hang them manually.

  The present invention has been made in view of the above-described problems, and smoothly attaches / detaches a crane hook to / from a hanging wire without the operator directly touching the hanging wire during a multi-point hanging slinging operation. An object of the present invention is to provide a hanging jig for slinging.

  In order to solve the above problems, the present invention is a slinging jig used when slung two hanging wires on a crane hook at the same time, and has two parallel struts standing on a floor surface. These two parallel struts are each attached with an arm portion projecting forward in parallel with each other, and a passing space through which a crane hook passes between the two parallel struts and between each arm portion. The upper surface of the arm portion is a first support portion that supports the ring at the tip of the first hanging wire that is previously slung on the crane hook, and the front surface of the column is slung on the crane hook later A suspending jig for hanging is provided as a second support portion that supports a ring at the tip of a second suspension wire.

  In the above hanging jig for hanging, it is preferable that an upper end of the ring supported by the first support portion is positioned below an upper end of the ring supported by the second support portion.

  The first support portion may be provided with a guide plate that guides the position in the width direction of the ring at the tip of the first suspension wire. In this case, the guide plates may be attached to the arm portions, respectively, so that the distance between the guide plates increases from the bottom to the top. Furthermore, the guide plate may be provided with a pressing member that prevents displacement of the ring supported by the first support portion toward the support column.

  The second support portion may be provided with a pressing member that prevents twisting of the ring at the tip of the second suspension wire.

  The two hanging wires may convey a spiral steel pipe forming stand. The ring at the tip of the first hanging wire may be made of a hard material that does not have elasticity, and the ring at the tip of the second hanging wire may have elasticity.

  According to the present invention, it is possible to smoothly attach and detach the crane hook to and from the hanging wire without directly touching the two hanging wires in the hanging operation of a heavy object or the like, and greatly reduce the burden on the slinging worker. be able to.

It is a perspective view which shows the example of the hanging jig | tool for slinging concerning embodiment of this invention. It is the figure which looked at the state by which the 1st ring was hold | maintained at the 1st support part of the hanging jig for sling shown in FIG. 1 from the top. It is the figure which looked at the state where the 2nd ring was hold | maintained at the 2nd support part of the hanging jig for sling shown in FIG. 1 from the front. It is a perspective view which shows the first process of the slinging operation | work using the slinging jig for slinging shown in FIG. FIG. 5 is a perspective view illustrating a process following FIG. 4. FIG. 6 is a perspective view illustrating a process following FIG. 5.

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

  FIG. 1 is an example of a slinging jig 1 for slinging according to an embodiment of the present invention, and is used, for example, during slinging when a spiral steel pipe forming stand is conveyed.

  The sling hanging jig 1 has two parallel support pillars 11 and 11 erected on a floor surface in a substantially vertical direction, and arm portions 12 and 12 attached to the support pillars 11 and 11, respectively. The arm parts 12 and 12 are joined to the support pillars 11 and 11 by, for example, welding or the like, project forward from the support pillars 11 and 11, and are parallel to each other. A space 10 through which a crane hook can freely pass is formed between the two struts 11 and 11 and between the arm portions 12 and 12. The distance between the columns 11 and 11 is set according to the size of the crane hook to be used. In order to allow the crane hook to pass stably, for example, 1.2 times or more of the maximum width of the crane hook. It is preferable that The support columns 11 and 11 are joined to a plate fixed to the floor surface with an anchor or the like, for example, and are installed so as to prevent falling or the like. The material and size of the column 11 and the arm portion 12 are determined so as to have sufficient mechanical strength with respect to a heavy wire hanging wire or a crane hook. In this specification, the direction in which the arm portion 12 is attached to the column 11 is referred to as the front, and the direction orthogonal to the front-rear direction in the horizontal direction is referred to as the width direction.

  As shown in FIG. 1, the arm portion 12 has a substantially V-shaped side surface, and the upper surface of the arm portion 12 has a ring (hereinafter referred to as a first ring) at the tip of a first hanging wire 21 that is previously slung on a crane hook. This is the first support portion 13 that supports a single ring 23). Further, the front surface of the support column 11, that is, the surface on which the arm portion 12 is attached, supports a ring (hereinafter referred to as a second ring 24) at the tip of the second suspension wire 22 that is subsequently slung on the crane hook. It becomes the 2nd support part 14 to do. When hanging the crane hook on each ring, the two rings can be slung smoothly one after another by moving the crane hook obliquely upward. Therefore, when the 1st ring 23 and the 2nd ring 24 are each supported by the 1st support part 13 and the 2nd support part 14, the position of the upper end of the 2nd ring 24 rather than the upper end of the 1st ring 23 Need to be high. Therefore, the position where the arm portion 12 is attached and the shape of the arm portion 12 are determined so as to satisfy this condition according to the dimensions of the rings 23 and 24.

  FIG. 2 is a view of the state in which the first ring 23 is held by the first support portion 13 as viewed from above. As shown in FIGS. 1 and 2, the first support portion 13 is provided with a guide plate 15 and a first ring pressing member 16 in each of the arm portions 12 and 12, respectively. The guide plate 15 is attached in the vicinity of the outer side in the width direction of each of the arm portions 12 and 12 and suppresses the positional deviation of the first ring 23 in the width direction and holds it within a predetermined range. When removing, it plays a role of guiding the first ring 23 to the first support portion 13. The distance between the left and right guide plates 15 and 15 may be appropriately determined according to the skill of the crane operator, and may be slightly larger than the maximum width of the first ring 23 when the skill level of the operator is high. . However, in order to facilitate the operation when removing the first ring 23 from the crane hook, the distance between the opposing guide plates 15 increases from the lower end to the upper end of the guide plate 15 fixed to the arm portion 12. It is preferable to make it. The first ring pressing member 16 is provided in a protruding shape at a position of each guide plate 15 near the column 11 on the opposing surface. The first ring pressing member 16 is provided to hold the first ring 23 that is pulled toward the support column 11 by the bending moment of the first suspension wire 21 in the first support portion 13.

  FIG. 3 is a front view of the state in which the second ring 24 is held by the second support portion 14. As shown in FIGS. 1 and 3, the second support portion 14 is provided with a second ring pressing member 17 between the two columns 11, 11. The second ring pressing member 17 is made of, for example, a cross member laid in the horizontal direction between the columns 11 and 11. In the second ring pressing member 17, the second ring 24 is pressed against the rear side of the support 11, that is, on the opposite side of the arm portion 12 with a non-uniform force, so that the second ring 24 is twisted or detached from the second support portion 14. This is to prevent this.

  Hereinafter, the procedure of the crane slinging operation using the sling hanging jig 1 according to the embodiment of the present invention will be described.

  FIGS. 4-6 shows the state which attaches two hanging wires to a crane hook using the above-mentioned sling hanging jig 1. FIG.

  First, as shown in FIG. 4, the rings (first ring 23 and second ring 24) of the two suspension wires 21 and 22 are connected to the first support portion 13 and the second support of the hanging jig 1 for slinging. Set in each part 14. In the present embodiment, the first ring 23 is a ring made of a hard material such as iron to which, for example, a suspension wire 21 made of two wires is connected, and the second ring 24 is made of a wire having elasticity, for example. It is a ring. Further, the maximum width of the first ring 23 and the second ring 24 is slightly larger than the interval between the columns 11 and 11 of the sling hanging jig 1. The first ring 23 is placed on the distal end side of the arm portion 12, the position shift in the width direction is prevented by the guide plate 15, and the position shift in the front-rear direction is prevented by the first ring pressing member 16. Are supported at predetermined positions. The second ring 24 is surrounded by the base end sides of the support columns 11 and 11 and the arm portions 12 and 12, and prevents the second ring pressing member 17 from twisting or detaching to the rear of the support column 11. It is supported by the support part 14. The upper end of the second ring 24 is supported at a position higher than the upper end of the first ring 23.

  In this state, the crane is operated, and as shown in FIG. 4, the crane hook 31 is disposed in front of the slinging jig 1 for slinging and below the first ring 23 that is slung first. Then, the crane hook 31 is moved obliquely upward and the first ring 23 is hung (FIG. 5). By moving the crane hook 31 further obliquely upward with the first ring 23 being hung, the direction of the first ring 23 placed on the first support portion 13 is raised, which is substantially the same as the second ring 24. Become parallel. Subsequently, the second ring 24 to be slung later is hung (FIG. 6). Thereafter, a transported object such as a molding stand is lifted and transported by the two suspension wires 21 and 22.

  When removing the first ring 23 and the second ring 24 from the crane hook 31, the crane is operated to place the crane hook 31 above the slinging jig 1 for slinging, and the crane hook 31 is opposite to that at the time of attachment. The second ring 24 and the first ring 23 are sequentially held in their original positions by being moved obliquely downward. Therefore, if the next transported item is attached to each of the suspension wires 21 and 22, the next slinging operation can be performed as it is. In this way, the two rings can be smoothly hung on the crane hook 31 when lifted, and the two rings can be returned to a predetermined position when removed.

  As described above, according to the present invention, in hanging work such as heavy objects or long objects, the operator does not directly touch the suspension wire or the crane hook, and the two suspension wires are simultaneously connected to the crane hook only by the crane operation. It can be attached and detached. Therefore, the labor of the slinging worker can be greatly reduced and the work can be performed by a small number of people.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to this example. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

  The present invention can be applied as a slinging jig for hanging not only steel-related heavy objects but also all heavy objects and long objects with two suspension wires.

DESCRIPTION OF SYMBOLS 1 Hanging hang | hanging jig | tool 10 Space 11 Support | pillar 12 Arm part 13 First support part 14 Second support part 15 Guide plate 16 First ring pressing member 17 Second ring pressing member 21 First hanging wire 22 Second Hanging wire 23 First ring 24 Second ring 31 Crane hook

Claims (8)

A hanging jig used to hang two hanging wires on a crane hook at the same time,
It has two parallel struts standing on the floor,
These two parallel struts are each attached with an arm portion projecting forward in parallel with each other,
Forming a passage space through which a crane hook passes between the two parallel struts and between the arm portions;
The upper surface of the arm portion is a first support portion that supports the ring at the tip of the first hanging wire that is first slung on the crane hook,
A slinging jig that uses the front surface of the support as a second support part that supports a ring at the tip of a second hanging wire that is slung on a crane hook later.   2. The sling hanging jig according to claim 1, wherein an upper end of the ring supported by the first support portion is positioned below an upper end of the ring supported by the second support portion.   The sling hanging jig according to claim 1 or 2, wherein the first support portion is provided with a guide plate for guiding a position in a width direction of a ring at a tip of the first hanging wire.   4. The sling hanging jig according to claim 3, wherein the guide plates are attached to the respective arm portions, and the distance between the guide plates is increased from below to above.   5. The sling hanging jig according to claim 3, wherein the guide plate is provided with a pressing member that prevents displacement of the ring supported by the first support portion toward the support column.   The sling hanging jig according to any one of claims 1 to 5, wherein a pressing member that prevents twisting of a ring at a tip of the second hanging wire is provided on the second support portion.   The suspending jig for slinging according to any one of claims 1 to 6, wherein the two suspending wires convey a forming stand of a spiral steel pipe.   The ring at the tip of the first hanging wire is made of a hard material having no elasticity, and the ring at the tip of the second hanging wire is elastic, according to any one of claims 1 to 7. Hanging jig.

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