JPH08208176A - Lifting sling - Google Patents

Abstract

PURPOSE: To hold an article in utilizing an opening part formed in it by making a pair of lifting metal fittings open toward the outside of respective ends of a horizontal member 2, while installing a turning fulcrum of the lifting metal fittings in the inside end of an upper end member of the lifting metal fittings, and connecting two lifting ropes to both outer ends. CONSTITUTION: Two lifting metal fittings 4a and 4b are opened toward the outside of respective ends of a horizontal member 2, and further each turning fulcrum of these lifting metal fittings 4a and 4b is set to an inside end of the upper end member, connecting lifting topes 5a and 5b to respective outer ends. With this constitution, a lifting sling 1 is merely hung up or down to the opening part of an article by an operation of a crane or the like, these lifting metal fittings 4a and 4b are able to be engaged with the article and/or removed from it automatically. Accordingly, since there is no need of man power, conveyance of the article is safely performable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger suitable for carrying concrete products having openings.

[0002]

2. Description of the Related Art Hitherto, various types of suspenders have been used for carrying concrete U-shaped grooves. From the point of view of the lifting mechanism, these conventional lifting devices are
It is mainly used for a mechanism for holding and lifting the side wall of the U-shaped groove with a holding tool, a mechanism for pressing and lifting the inner wall of the U-shaped groove with a pressing member, and a mechanism for locking and lifting the locking tool on the outside of the side wall of the U-shaped groove. Be separated.

A mechanism for holding and lifting the side wall of the U-shaped groove with a holding tool is disclosed in Japanese Examined Patent Publication No. 2-59116 and Japanese Utility Model Laid-Open No. 59-.
No. 190784, No. 60-130278, No. 3-200692, and No. 5-449.
As described in Japanese Patent Publication No. 86, etc., the upper part of the side wall of the U-shaped groove is gripped by a U-shaped gripping tool and lifted by using a crane.

A mechanism for pressing the inner wall of the U-shaped groove by a pressing member to lift the U-shaped groove is disclosed in Japanese Patent Laid-Open No. 80439/1992.
As described in JP-A No. 40784, JP-A-5-95973, JP-A No. 4-101995, JP-B-62-40965, etc., the pressing member is pressed against the inner wall of the U-shaped groove by the link mechanism. , It is lifted using a crane.

A mechanism in which a locking tool is locked on the outside of a side wall of a U-shaped groove and lifted is disclosed in Japanese Examined Patent Publication No. 6583 / 6-1583.
As described in Japanese Patent Laid-Open No. 2-176180, Japanese Utility Model Publication No. 2-25831, etc., a locking tool is inserted into a hole in a side wall of a U-shaped groove and lifted by using a crane.

[0006]

However, the gripping tool U
A conventional lifting device having a mechanism for gripping and lifting the side wall of the U-shaped groove and a mechanism for pressing and lifting the inner wall of the U-shaped groove with a pressing member can lift and lower the U-shaped groove only in the U position. When laying the groove in reverse U,
There is a problem that the U-shaped groove that has been transported must be first laid down on the ground, and then the U-shaped groove must be inverted using a reversing machine before being laid.

For example, in the case of a concrete block for drainage gutters in which an opening for grating arrangement is formed on the top plate,
In the posture with the top plate up, although there is an opening at the top,
Since the side wall of the block cannot be gripped by the conventional gripping tool or the inner wall of the block can be pressed by the pressing mechanism using this opening, it cannot be transported in the laid posture.

Further, the lifting tool of the mechanism for lifting the locking tool by locking the locking tool to the outside of the side wall can be lifted regardless of whether the U-shaped groove is in the U posture or the inverted U posture. There are problems that it is necessary to drill a hole for insertion in the side wall in advance, it is necessary to backfill this hole after laying, and the strength of the side wall is reduced due to the hole.

In view of the above problems, the present invention makes it possible to grip an article using an opening formed in the article when carrying an article having the opening without performing any special processing on the article. The purpose is to provide hanging equipment.

[0010]

SUMMARY OF THE INVENTION A suspender according to the present invention comprises a horizontal member for attaching a hanging metal fitting, and a pair of U-shaped cross-section hanging members which are rotatably attached to the lower portion of the horizontal member at intervals. The hanging members of the same pair are opened toward the outside of each end of the horizontal member, and the pivot of the hanging member is provided at the inner end of the upper member of the hanging member. It is characterized in that a lifting rope is connected to the end portion.

Here, the pair of hanging metal fittings can be attached to the lateral member via a hinge pin.

Further, it is possible to adjust the distance between the pair of hanging fittings by constructing the lateral member so as to be capable of expanding and contracting in the longitudinal direction.

The horizontal member is a suspender main body to which a suspending metal fitting is attached, and is made of steel pipe or shaped steel. The length of the cross member is a length corresponding to the size of the opening of the object to be transported. For example, in the case of a hanging tool for a concrete block for drainage channels in which an opening for grating arrangement is formed on the top plate, the length of the lateral member is set to about 1.0 to 1.2 m. A lifting wire locking tool is provided on the upper portion of the lateral member so that the entire lifting tool can be lifted by a crane or the like.

The hanging bracket having a U-shaped cross section is manufactured by cutting a grooved steel or the like. The opening size of the hanging metal fitting should correspond to the thickness of the edge of the opening of the transported object. For example, in the case of the above-mentioned hanging tool for the concrete block for drainage, the opening size of the hanging fitting is 100 to 150 mm.

The hanging metal fitting is attached to the horizontal member rotatably on the lower portion of the horizontal member made of steel pipe or shaped steel, for example, via a hinge pin. Here, in the case where one suspender is used as a suspender exclusively for articles having a specific opening size, the mounting positions of both suspending metal fittings are fixed, and the interval between both suspending metal fittings is equal to the opening of the transported object. Attach the hanging metal fittings through the hinge pins at positions that are almost the same size. Also, 1
When it is possible to carry articles having different opening sizes with the base suspender, the lateral member can be expanded and contracted in the longitudinal direction by configuring the lateral member with a main lateral member and a sub lateral member. The structure makes it possible to adjust the spacing between both suspension fittings.

Further, the hanging metal fittings are mounted in such a manner that the openings of the respective hanging metal fittings are oriented outwards of the respective end portions of the lateral members, and the hinge pins serving as pivot points are provided at the inner ends of the upper end members of the hanging metal fittings. Is provided, and the lifting rope is connected to the outer end through a connecting tool or the like. In this posture, the hanging metal fitting is rotatably attached to the horizontal member so that when the hanging material is lifted by a crane, the hanging metal fitting is rotated by its own weight toward the center of the horizontal material with the hinge pin serving as a fulcrum. In addition, when the hoisting rope is pulled upward by a crane or the like, the hoisting metal fitting rotates about the hinge pin toward the outer end of the lateral member.

When an article such as a concrete block is transported using the suspending tool of the present invention, a suspending tool dedicated to the article or a suspension in which the interval of the suspending metal fittings is adjusted according to the size of the opening of the article. Use ingredients.

The hoisting tool of the present invention is a hoisting tool suitable for transporting a concrete block for drainage grooves, in which an opening for grating arrangement is formed on a top plate, but is not limited to such a concrete block for drainage grooves. Applicable to other concrete products, synthetic resin products, steel products, etc. as long as the product has an opening and the edge of the shape of the hanging bracket with a U-shaped cross section is covered in the opening. be able to.

[0019]

In the hoisting tool of the present invention, when the hoisting tool is hoisted, the hoisting tool is rotated by its own weight toward the center of the lateral member with the hinge pin serving as a fulcrum. When the object is hung down toward the opening of the carried object, the lower end of the hanging metal fitting automatically enters the opening along the edge of the opening of the carried object. If you continue to lower the hanger, when the lower end of the hanging bracket comes to the lower end of the edge of the opening,
When the upper end of the hanging metal fitting comes into contact with the upper surface of the edge of the opening of the carried object, and further the hanging tool is lowered, the U-shaped hanging metal fitting is put on the edge of the opening of the carried material. In this way, simply lower the sling toward the opening of the transported object,
The suspending metal is automatically locked to the edge of the opening of the transported object.

After the suspending metal is locked to the edge of the opening of the transported object, when lifting the transported object, the lifting rope connected to the upper end member of the suspending metal is directed diagonally toward the center of the lateral member. When the lifting tool is lifted while being pulled upward, the object can be lifted while the hanging metal fitting is locked to the edge of the opening of the object.

When the object to be transported is transported to a predetermined place and is laid down on the ground, and when the lifting tool is removed, the lifting tool connected to the lifting tool is loosened and the lifting tool is lifted. When the hinge pin is pivoted toward the center of the horizontal member as a fulcrum, the lower end member of the hanging bracket is disengaged from the lower end of the edge of the opening of the transported object, and the hanging device is further lifted,
The lower end of the hanging metal fitting is lifted up along with the lateral member along the edge of the opening of the object to be transported, and is removed from the opening. In this way, the lifting metal fitting is automatically lifted from the opening of the transported object only by lifting the lifting equipment while loosening the lifting rope connected to the hanging metal fitting.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a hoisting tool which is a first embodiment of the present invention, and FIG. 2 is a view showing a procedure of hoisting work by the hoisting tool of FIG. The sling 1 of the present embodiment is a sling suitable for carrying a concrete block 50 for drainage gutters in which an opening 52 for grating arrangement is formed in a top plate 51 as shown in FIG. , A pair of hanging fittings 4a, 4b rotatably attached to the lower portion of the lateral member 2 via hinge pins 3a, 3b and lifting ropes 5a, 5b connected to the hanging fittings 4a, 4b. Become.

The horizontal member 2 is a suspending tool main body to which the suspending metal fittings 4a and 4b are attached, and is made of a square steel pipe. The length of the lateral member 2 is the concrete block 5 which is the object to be transported.
It is set to 1,160 mm, which corresponds to the size of the opening 52 of 0. A wire suspension ring 6 for lifting the horizontal member 2 with a crane or the like on the upper surface of the central portion of the horizontal member 2 in the longitudinal direction.
Is provided.

The hanging metal fittings 4a and 4b are for locking to the edge of the opening 52 of the concrete block 50, and are manufactured by cutting a channel steel. The opening size of the U-shaped cross section is 140 mm, which corresponds to the thickness of the edge of the opening 52 of the concrete block 50.

The hanging metal fittings 4a and 4b are attached to the horizontal member 2 by attaching hinge pins 3a and 3b to the lower portions of both ends of the horizontal member 2.
It is attached rotatably via. Hanging metal fittings 4a, 4
The mounting position of b is a position where the interval between the hanging metal fittings 4a and 4b is substantially the same as the distance between the opposing edges of the opening 52 of the concrete block 50.

The hanging metal fittings 4a and 4b are mounted in such a manner that the opening having a U-shaped cross section is directed to the outside of the end of the lateral member 2, and the hinge pins 3a and 3a are attached to the inner ends of the upper members of the hanging metal fittings 4a and 4b. 3b is provided, and a lifting rope 5 is provided at the outer end.
a and 5b are connected. In this position, the hanging metal fittings 4a, 4
By rotatably attaching b to the horizontal member 2, when the lifting device 1 is lifted by a crane or the like, in a state where the lifting ropes 5a and 5b are loosened, as shown in FIG. The hanging metal fittings 4a and 4b are rotated by their own weights toward the center of the lateral member 2 with the hinge pins 3a and 3b as fulcrums. When the hoisting ropes 5a and 5b are pulled upward by a crane or the like, the hanging metal fittings 4a and 4b move outward from the end of the lateral member 2 from the state of FIG. 2A with the hinge pins 3a and 3b as fulcrums. 1 and the state shown in FIG. 1 is obtained.

FIG. 2 shows a case where the concrete block 50 shown in FIG.
Will be described with reference to.

First, the suspension wire 6 is hung on the suspension ring 6 of the horizontal member 2 of the suspension 1, and the suspension ropes 5a and 5b are loosened, and the suspension 1 is suspended by a crane (not shown) to make concrete. It is brought above the opening 52 of the block 50 ((a) of FIG. 2).

Next, the hanging tool 1 is lowered toward the opening 52 in the state as it is. At this time, the hanging metal fitting 4
Since the a and 4b are rotated toward the center of the lateral member 2 by the weight of the hinge pins 3a and 3b as the fulcrum, the lower ends of the suspension fittings 4a and 4b are the concrete blocks 50.
The opening 52 is automatically entered along the edge of the opening 52 (FIG. 2B).

When the hanging device 1 is subsequently lowered, the hanging metal member 4
The lower end of a and 4b is the opening 5 of the concrete block 50.
When reaching the lower end of the edge of 2, the upper ends of the hanging metal fittings 4a and 4b come into contact with the upper surface of the edge of the opening 52 of the concrete block 50, and when the hanging tool 1 is further lowered, the U-shaped hanging metal fittings 4a and 4b. Becomes a posture of covering the edge of the opening 52 of the concrete block 50 ((c) of FIG. 2).

In this way, the hanging fittings 4a and 4b are automatically locked to the edge of the opening 52 of the concrete block 50 only by lowering the hanging tool 1 toward the opening 52 of the concrete block 50. become.

After suspending the metal fittings 4a, 4b on the edge of the opening 52 of the concrete block 50, when lifting the concrete block 50, the suspension ring 6 of the lateral member 2 is used.
Remove the hanging wire 7 from the hanging metal fittings 4a, 4b
When the hoisting ropes 5a and 5b connected to the upper end member of the concrete block 50 are hoisted in a state where the hoisting ropes 5a and 5b are pulled obliquely upward toward the center of the lateral member 2 (state of (d) of FIG. 2), Without suspending the hanging metal fittings 4a, 4b locked to the edge of the opening 52, the concrete block 5
0 can be lifted.

When the concrete block 50 is transported to a predetermined place and lowered to the ground, and then the lifting device 1 is removed, the lifting rope 5 connected to the hanging metal fittings 4a and 4b.
Loosen a and 5b, hang the hanging wire 7 on the hanging ring 6, and lift the hanging tool 1. When the suspending tool 1 is lifted, the suspending metal fittings 4a and 4b rotate by their own weights toward the center of the lateral member 2 with the hinge pins 3a and 3b as fulcrums, and the suspending metal fitting 4
When the lower end members of a and 4b are disengaged from the lower end of the edge of the opening 52 of the concrete block 50 and the hanging tool 1 is further lifted, the hanging metal fittings 4a and 4b are lifted together with the lateral member 2 and come off the edge of the opening 52 ( 2 (b) state). In this way, the lifting metal fittings 4a and 4b are automatically lifted from the opening 52 of the concrete block 50 only by lifting the lifting tool 1 with the lifting ropes 5a and 5b connected to the lifting metal fittings 4a and 4b being loosened. Come off. After that, the hanging tool 1 may be lifted as it is, and the hanging tool 1 may be carried to a predetermined place.

As described above, according to the hanging tool 1 of this embodiment, the hanging members 4a and 4b having a U-shaped cross section are attached to the lower portion of the lateral member 2 so as to be rotatable with respect to the lateral member 2.
The hanging metal fittings 4a and 4b can be locked to the article by utilizing the opening of the article, and it is necessary to re-grasp the article, reverse it, or process the article during transportation or movement. There is no. For example, in the work of laying a concrete block for drainage channels in which an opening for grating arrangement is formed on the top plate, the concrete block in the storage place is hung up with the hanging tool 1 in the posture as it is, and next to the concrete block already laid, Carry the following concrete block with it suspended by the hanger 1,
The next concrete block can be laid by just lowering it, and the efficiency of the laying work can be improved.

Further, the hanging metal fittings 4a and 4b are opened toward the outer ends of the respective lateral members 2, and the hanging metal fitting 4 is further provided.
Since the turning fulcrums of a and 4b are the inner ends of the upper end members of the hanging fittings 4a and 4b, and the lifting ropes 5a and 5b are connected to the outer ends thereof, the lifting device 1 can be operated by a crane or the like. The hanging metal fittings 4a and 4b can be automatically locked or removed from the article simply by hanging the hanging fitting from the opening and lifting it.

Further, since the hanging metal fittings 4a and 4b are not required to engage and disengage with the article, it is possible to carry the article safely.

FIG. 3 is a perspective view showing a suspender according to a second embodiment of the present invention, and FIG. 4 is an exploded perspective view of a part of the suspender of FIG. 3, showing a telescopic structure of a lateral member. . The suspending tool 11 of the present embodiment is a suspending tool capable of carrying articles having different opening sizes with one suspending tool, and includes the main lateral member 12, the sub lateral members 12a and 12b, and the sub lateral member. 12
A pair of hanging metal fittings 14a, 14b rotatably attached to the lower part of a, 12b via hinge pins 13a, 13b.
And lifting ropes 15a and 15b connected to the hanging fittings 14a and 14b. In this suspender 11, the horizontal member is configured to be extendable / contractible in the longitudinal direction by the main horizontal member 12 and the sub-horizontal members 12a and 12b, and the interval between the hanging fittings 14a and 14b can be adjusted.

The suspending tool 11 is basically the same as the suspending tool 1 of the first embodiment except that the interval between the suspending fittings 14a and 14b can be adjusted. Therefore, in this embodiment, the suspending fitting 14a is used. , 14b will be mainly described.

In the present embodiment, the hanging metal fittings 14a, 1
In order to make the interval of 4b adjustable, as shown in FIGS. 3 and 4, the lateral member is configured to be extendable / contractible in the longitudinal direction by the main lateral member 12 and the sub lateral members 12a and 12b. The sub lateral members 12a and 12b are inserted into the main lateral member 12 from the ends of the main lateral member 12, respectively.
By moving b into and out of the main lateral member 12, the length of the entire lateral member can be adjusted. Sub-lateral member 12
Since the hanging metal fittings 14a and 14b are attached to a and 12b, the space between the hanging metal fittings 14a and 14b can be adjusted by taking in and out the sub lateral members 12a and 12b.

In the hanging tool 11 of this embodiment, the main transverse member 12
At both ends of the holes 16a and 16b (hole 16 in FIG. 4).
(only b is shown), four holes 17a and 17b are provided in the sub-lateral members 12a and 12b, and holes 16a and 1 of the main lateral member 12 are provided.
6b and the four holes 17a, 17 of the sub-lateral members 12a, 12b
By inserting the pins 18a, 18b into either of the b's, the sub lateral members 12a, 12b are fixed so as not to move with respect to the main lateral member 12, and the hanging metal fittings 14a, 1b are attached.
The distance of 4b is adjusted.

When the suspending tool 11 is used, the spacing between the suspending metal fittings 14a and 14b is adjusted to the spacing corresponding to the size of the opening of the object to be transported by the above method.
Since the method of using the hanging tool 11 is the same as the method of using the hanging tool 1 of the first embodiment, the description thereof will be omitted.

As described above, according to the suspending tool 11 of the second embodiment, the distance between the pair of suspending metal fittings 14a, 14b can be adjusted, which is in addition to the effect of the suspending tool 1 of the first embodiment. As a result, it is possible to carry articles having different sizes of openings with a single suspender.

[0043]

According to the present invention, the following effects can be obtained.

(1) By attaching a hanging bracket having a U-shaped cross section to the lower part of the horizontal member so as to be rotatable with respect to the horizontal member,
Since the hanging metal fitting can be locked to the article by utilizing the opening of the article, there is no need to re-grasp the article, invert it, or process the article during transportation or movement.

(2) The hanging metal fittings are opened to the outside of the respective end portions of the horizontal member, and the pivot point of the hanging metal fitting is the inner end portion of the upper end member of the hanging metal fitting, and the lifting rope is attached to the outer end portion. By connecting the strips, the hanging metal fittings can be automatically locked or removed from the article simply by hoisting the hoisting tool to the opening of the article and hoisting it by operating a crane or the like.

(3) Since the hanging metal fitting does not require manpower to engage with or dismount the article, the article can be transported safely.

(4) By making the interval between the pair of hanging fittings adjustable, articles having different opening sizes can be carried by one hanging tool.

[Brief description of drawings]

FIG. 1 is a perspective view showing a suspender which is a first embodiment of the present invention.

FIG. 2 is a diagram showing a procedure of hoisting work by the hoisting device of FIG.

FIG. 3 is a perspective view showing a suspender which is a second embodiment of the present invention.

4 is an exploded perspective view of a portion of the sling of FIG. 3,
It is a figure which shows the expansion-contraction structure of a horizontal member.

FIG. 5 is a perspective view of a concrete block for a drainage gutter, which is an example of a transported object.

[Explanation of symbols]

 1,11 Hanging device 2 Horizontal member 3a, 3b, 13a, 13b Hinge pin 4a, 4b, 14a, 14b Hanging metal fittings 5a, 5b, 15a, 15b Lifting rope 6 Wire hanging ring 7 Hanging wire 12 Main horizontal member 12a, 12b Sub-lateral member 16a, 16b, 17a, 17b Hole 18a, 18b Pin

Claims (3)

[Claims] 1. A lateral member for attaching a hanging metal fitting,
And a pair of hanging brackets having a U-shaped cross section, which are rotatably attached to the lower part of the horizontal member at intervals, and the hanging brackets of the same pair open toward the outer ends of the respective lateral members. Then
Further, the lifting tool is characterized in that a turning fulcrum of the hanging fitting is provided at an inner end portion of an upper end member of the hanging fitting, and a lifting rope is connected to an outer end portion. 2. The hanging tool according to claim 1, wherein the pair of hanging metal fittings are attached to the lateral member via hinge pins. 3. The hanger according to claim 1, wherein the lateral member has a structure capable of expanding and contracting in a longitudinal direction, and an interval between the pair of hanger fittings is adjustable.