JPH0796437B2 - Lifting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a concrete U-shaped groove for a gutter, a concrete gutter lid for the gutter, a long iron material, and other materials and equipment. The present invention relates to a hoisting tool for various articles that is used for hoisting and transporting items and the like, or for aligning and arranging them at a predetermined position.

"Conventional technology" Generally, crane trucks and tow trucks are used when hoisting and moving various heavy materials, hoisting them to a predetermined position, or unloading them at construction sites or construction material storage sites. A predetermined work is performed by hoisting various materials using an arbitrary hoisting tool.

In general, hoisting wires that can be used universally for hoisting objects of various shapes are often used, and the hoisting wire is individually wound around the U-shaped groove and hoisted, and the wire is removed after the hoisting movement. Has been done.

On the other hand, in the case of the specified common shape such as the concrete U-shaped groove described above, a structure having a pressure contact leg that is pressed against the inside of the U-shaped groove by a lifting force using the common shape, or a lifting shape For example, a dedicated hoisting tool provided with an L-shaped hoisting piece that holds the lower end corner of the object is used.

[Problems to be Solved by the Invention] Among the above conventional means, the former lifting wire means requires the work of winding and removing the wire one by one for each object to be lifted, and the lower side of a heavy U-shaped groove or the like. The work of winding the wire through the wire or removing the wire from the U-shaped groove that is grounded wholesale is extremely complicated and the workability is poor. Moreover, if the wire is not wound properly, there is a risk of falling off during lifting. .

On the other hand, the latter dedicated hoisting tool can improve workability by omitting the wire work, but there is a risk of falling due to some shock during hoisting, which is not suitable for lifting long objects, and further There is a problem in that it is troublesome to accurately insert and remove the L-shaped lifting piece under the lifting object by using a burl.

The present invention provides a novel hoisting tool that solves the above-mentioned drawbacks of the conventional means.

"Means for Solving the Problems" The lifting device of the present invention for solving the above technical problems has an inverted L in which the right horizontal piece and the vertical piece intersect at an obtuse angle, or the left horizontal piece and the vertical piece intersect at an acute angle.
A vertical beam having a character shape and having a lifting portion at the upper end, a right lateral beam that is pivotally supported below the vertical beam, and regulates downward rotation, and is pivotally supported above the right lateral beam, and It is composed of a combination of left horizontal beams whose downward rotation is restricted, and is provided with a clamping piece at the front ends of the left and right horizontal beams, and a tightening rod provided between the vertical beams and the horizontal beams, or between the vertical beams and the horizontal beams. A tightening lock unit for the vertical beam and the horizontal beam, which is composed of a wedge body that is detachably inserted, is provided at the inner side of the crossing angle, and the pair of left and right clasping pieces are brought into contact with the inside of the hoisted object, and the self-weight of the hoisted object. A hoisting tool characterized by a structure in which the hoisting piece is hoisted by being pressure-held. And a vertical beam having an inverted L shape in which the right horizontal piece and the vertical piece intersect at an obtuse angle, or the left horizontal piece and the vertical piece intersect at an acute angle, and has a lifting portion at the upper end, A horizontal beam which is pivotally supported below the beam and whose downward rotation is restricted, is provided with a sandwiching piece facing the lower end of the vertical beam and the horizontal beam, and further provided between the vertical beam and the horizontal beam. A hoisting tool having a structure in which a tightening lock means for the vertical beam and the horizontal beam, which comprises a tightening rod or a wedge body that is detachably inserted at an intersection inner side portion of the vertical beam and the horizontal beam, is provided. Of the second invention.

And, in the above first and second inventions, the lateral beam and the wedge body are provided with a buoyancy releasing means provided with a float body having a required buoyancy, or the horizontal piece of the vertical beam has a detachable connection structure. At the same time, an embodiment is adopted in which a combination beam structure is provided in which an auxiliary lateral piece which is detachably connected to the tip of the lateral piece so as to intersect with the lateral piece and to which the lifting portion can be attached is formed.

"Operation" In the hoisting tool of the first invention, when the pair of clasping pieces are applied to the inside of a hoisting object such as a U-shaped groove and pulled up, the vertical beam and the horizontal beam function as a "lever" due to the weight of the hoisting object. Since these pivot points act as action points and force points, a strong clinging force in the direction of expanding the span is generated between the pair of clasping pieces, and the hoisting object is hoisted as it is due to the pressure clinging force.
Then, if it is wholesaled as it is, the clinging piece disappears due to the disappearance of the clinging force due to the elimination of its own weight, and the lifting and unloading work of the article becomes extremely simple. Since the tightening lock means is present at the time of hoisting and unloading, the clamping force is stable, and the hoisting action is extremely stable without the risk of dropping or slipping due to the impact during hoisting.

Further, in the hoisting tool of the second invention, when a rectangular plate object or the like is sandwiched between the holding pieces and pulled up, the vertical beams and the horizontal beams similarly function as a lever, and the pivot point and the holding pieces serve as fulcrums and points of action. As a result, the pair of clasping pieces generate a clinging force that shortens the clinging span, so that the same effect as the first aspect of the invention is obtained. In addition, in the aspect in which the float body is provided, when the hoisted object is put into water, the float body floats and the clinging piece is automatically loosened.

Further, in the hoisting tool having the assembled beam configuration of the above aspect, the pair of holding pieces can be arranged vertically by the combined connection of the horizontal piece and the auxiliary horizontal piece, and the lifting portion can be positioned above the holding piece. Therefore, it is possible to vertically or diagonally suspend a rectangular plate object or the like.

"Example" Hereinafter, it demonstrates in detail based on an Example. First, with reference to FIG. 1 showing a lifting tool of one embodiment of the first invention,
The right horizontal piece 10 and the vertical piece 12 intersect with each other at an obtuse angle θ ₁ , and the vertical beam 1 having the lifting portion 5 at the upper part, and the vertical beam 1 at the pivot point 6A at the lower end of the vertical beam 1
And the right lateral beam 2 whose downward rotation is restricted by the stopper 7 and the pivot point 6B located above the right lateral beam 2 and the vertical beam 1 in a crossing manner. The left lateral beam 3 whose downward rotation is restricted by the stopper 7 forms the main part, and the right lateral beam 2 and the left lateral beam 3 are provided at their tips with the center line 2A of the right lateral beam 2 and the center line of the left lateral beam 3. An attachment piece 9A9B having an attachment surface 14 orthogonal to 3A is provided. Then, the clasping piece 9A9B is applied to the inside of the U-shaped groove 8 made of concrete, the lifting portion 5 is hooked on the hook of the mobile crane and pulled up, and the clasping piece 9A9B is inside the U-shaped groove 8 by the weight of the U-shaped groove 8. It is crimped to and lifted as it is.

Specifically, the vertical beam 1 has an inverted L shape with a right horizontal piece 10 at the upper end in order to stabilize the lifting center of gravity and the "lever action" when it is lifted.
In addition to forming a letter shape, the L-shaped angle is made obtuse and slightly opened downward, so that the lifting portion 5 can be slid on the right lateral piece 10 and set at an arbitrary position for gravity balance.

As shown in FIG. 1 (B), the right horizontal beam 2 is made of a plate material that is attached to the vertical beam 1 of the square timber, and has an advancing / retreating shaft 13 between the plate materials, and is attached to the front end of the advancing / retreating shaft 13. The piece 9A is replaceably attached, and the holding surface 14 of the holding piece 9A is the center line 2A of the right lateral beam 2.
Is orthogonal to. The right horizontal beam 2 is restricted from rotating downward in the figure by a stopper 7 at the lower end of the vertical beam 1, and the inside of the lower end of the vertical beam 1 is formed in an arc shape as shown by the dotted line in the figure. 2 can be folded by relatively rotating in the direction of arrow A in the figure.

A tightening rod 19 having a turnbuckle 18 is provided between the vertical beam 1 and the right horizontal beam 2, and the clasp piece 9A9B.
When it is crimped inside the U-shaped groove 8, the turnbuckle 18
Is tightened to tightly lock the intersecting posture of the vertical beam 1 and the right lateral beam 2.

Further, the advancing / retreating shaft 13 of this embodiment has several locking holes 15A penetrating therethrough, and an arbitrary locking hole 15A and a locking hole 15B of the right lateral beam 2 are formed in accordance with the standard size of the U-shaped groove 8. When the locking pin 16 is also inserted and attached, the span L ₁ of the attachment piece 9A9B can be adjusted and set with one touch.

On the other hand, as shown in FIG. 1 (C), the left horizontal beam 3 is formed of a plate that sandwiches the vertical beam 1, and the stopper 7 restricts downward rotation of the vertical beam 1 and a clamping surface orthogonal to the center line 3A. An attachment piece 9B having 14 is attached exchangeably. It should be noted that the attached piece
The gripping surface 14 of 9A9B is provided with a high friction rubber lining, etc., and between the pivot points 6A6B, there is a "leverage" described later.
There is an interval L ₂ required for. Reference numeral 17 in the figure is a positioning stopper.

In the hoisting tool of the embodiment shown in FIG. ₁ , the span L ₁ of the holding piece 9A9B is preset according to the size of the U-shaped groove 8 to be lifted, and the holding piece 9A9B is placed inside the U-shaped groove 8. When they are brought into contact with each other and lifted up as they are, the vertical beam 1 and the right horizontal beam 2 function as a "lever" due to the weight of the U-shaped groove 8, and the pivot point 6A acts as an action point and a pivot point.
Since 6B acts as a fulcrum, a strong clamping force P in the direction of expanding the span L ₁ of the clamping piece 9A9B is generated, and the U-shaped groove 8 has a clamping force P.
Is hung up by. Then, when the U-shaped groove 8 is placed at a predetermined position, the "leverage" action is canceled by the elimination of its own weight, and the clasping piece 9A9B is freely removed.

Further, the tightening locking means locks the holding position of the holding piece 9A9B by the vertical beam 1 and the left and right horizontal beams 2.3 that act as a lever, so that a shock is applied during lifting or a long object being lifted. Even if one end comes into contact with other equipment or the ground and a shock is transmitted, there is no risk of falling and slipping due to collapsed posture, and the lifting action is more stable.

Next, another embodiment of the first invention will be described with reference to FIGS. First, FIGS. 2 (A) and 2 (B) show tightening lock means instead of the turnbuckle 18 described above.
20 is provided, and when the holding piece 9A9B is in the holding posture, the wedge body 20
Is mounted to lock the crossed posture of the vertical beam 1 and the right lateral beam 2 tightly. 2 (B) is a structure for manually attaching / detaching the wedge body 20 connected to the cord body 21, and FIG. 2 (A) is a biasing spring 22.
The wedge body 20 is urged and attached by means of the above. When the wedge body 20 is removed, the wedge body 20 is manually pulled up and the upper end is hooked on the locking piece 23.

Further, FIG. 2 (C) shows another means for advancing / retreating the advancing / retreating shaft 13 described above, in which the advancing / retreating amount is set by the screwing advancing / retreating shaft 13 so that the span L ₁ of the sandwiching piece 9A9B is stepless. It can be set.

On the other hand, FIG. 3 shows a modification of the embodiment shown in FIG. 1, which comprises a vertical beam 1 in which a left horizontal piece 11 and a vertical piece 12 intersect at an acute angle θ ₂ , and the vertical beam 1 is connected to the right horizontal beam 2 described above. A left cross beam 3 is provided and has the same operation as that shown in the first illustration. It should be noted that the one shown in FIG. 3 is also provided with the above-mentioned tightening lock means composed of the tightening rod 19 or the wedge body 20.

Next, with reference to FIG. 4 and FIG. 5, an embodiment of the above-mentioned second invention applied to the lifting of the square groove lid 25 made of concrete and the like will be described. This lifting tool is a vertical piece as above.
Inverted L-shaped longitudinal beams 1 12 and Migiyokohen 10 intersect at an obtuse angle theta ₁
And a horizontal beam 4 which has a pivot point 6A below the vertical beam 1 and extends in the same direction as the right horizontal piece 10 and whose tip is inclined downward. Opposite inverted L-shaped clamping pieces 9A9B are provided, and the lateral beam 4 is restricted from downward rotation by a stopper 7.

And the lifting device of this FIG. 4 embodiment is also shown in FIG. 2 (A).
A wedge body 20 similar to the one shown in FIG. 5 or, as shown in FIG. 5 (A), tightening lock means composed of a tightening rod 19 having a turnbuckle 18 is provided between the vertical beam 1 and the horizontal beam 4. .

In the embodiment of FIG. 4, when the clasping piece 9A9B is applied to the upper end corner of the groove lid 25 and lifted as it is, the vertical beam 1 functions as a "lever" due to the weight of the groove lid 25, and the pivot point 6A is a fulcrum. The attachment piece 9A of the vertical beam 1 acts as a point of action, and the span between the attachment pieces 9A and 9B
Since the clamping force P in the direction of contracting L ₁ is generated, the groove lid 25 is lifted by the clamping piece 9A9B. Then, if it is wholesaled as it is, the clinging force is canceled by releasing its own weight, and the groove lid 25 is lifted and transported because it is removed as it is.

Further, by the above-mentioned tightening lock means, it is possible to tighten and lock the holding of the groove lid 25 by the holding piece 9A9B,
There is no risk of dropping the groove lid 25 that is lifted and transported.

Further, in FIG. 5 (B), similar to the embodiment of FIG. 1 described above, the tip of the cross beam 4 is made into the advancing / retreating axis 13, and the span L ₁ of the sandwiching piece 9A9B can be arbitrarily adjusted and set. it can.

Next, FIG. 6 exemplifies a shape change of the attachment piece 9A9B of the lifting device of the present invention, which has an arbitrary shape such as an opposed V shape, an opposed arc shape, and an opposed inverted V shape according to the side shape of the lifting article. Will be adopted.

Next, FIG. 7 shows a modification of the embodiment shown in FIG.
The vertical beam 1 consisting of the left horizontal piece 11 and the vertical piece 12 intersects at an acute angle θ ₂ ,
The cross beam 4 extends in the direction opposite to the left cross piece 11.

On the other hand, FIG. 8 shows another embodiment of the second invention used for loading and hoisting articles into water.
In the suspending tool composed of the vertical beam 1 and the horizontal beam 4 having the locking means composed of the wedge body 20, the float body 24 is provided on the wedge body 20 and the horizontal wedge 4.

According to the one shown in FIG. 8, when the sandwiching pieces 9A9B are lifted up by sandwiching and suspended in water, when the sandwiching force is removed by releasing the weight of the suspended object, the buoyancy of the float body 24 causes the wedge body 20 to move.
The horizontal beam 4 is lifted up as it goes out and becomes free, so it is possible to automatically release the lifting object carried in the water.

Next, a lifting tool according to another embodiment of the present invention will be described with reference to FIG. This embodiment is for vertically hanging the groove lid and the like, and includes the vertical beam 1, the horizontal beam 4 and the sandwiching piece 9A of the second invention.
In the hanging device having 9B, the right horizontal piece 10 and the vertical piece of the vertical beam 1
12 and 12 have a detachable connection structure as a separate body, and at the tip of the right lateral piece 10 are detachable orthogonal to the right lateral piece 10 and the hanging part 5 can be attached. An auxiliary horizontal piece 26 of the article is connected.

According to this FIG. 9 embodiment, it can be used in the same manner as described above as shown in FIG. 9 (A), and as shown in FIG.
When 10 is connected to the vertical piece 12 in the opposite direction and the hanging portion 5 is attached to the auxiliary horizontal piece 26, the sandwich beam 9A9B which is vertically opposed to the hanging portion 5 is positioned below the hanging portion 5. It has a structure that allows the groove lid to be in a vertical position, or can be lifted, transported and moved in an oblique position by gravity balance.

Finally, with reference to FIG. 10, another embodiment common to those shown in FIGS. 1 to 9 will be described. Lifting tool 28 of each of the above-described embodiments
May be mounted on a common lifting bar 27 and used for lifting a long object. Further, although not shown, the float body 24 of the embodiment shown in FIG. 8 may be attached to the lifting tool shown in FIG. 2 (B). Further, the sandwiching pieces 9A9B may be lengthened to sandwich a plurality of hoisting objects at the same time.

"Effects of the Invention" As described above, the hoisting tool of the present invention lifts a pair of sandwiching pieces against a hoisting object and pulls them up, and the loosening of the sandwiching piece causes the article to come loose. Since the work is extremely simple and the safety during lifting can be secured, the workability and safety of lifting, transporting and transferring various articles are improved. Further, there are various effects such as simple structure, low cost, and high practicality.

[Brief description of drawings]

FIG. 1: A lifting tool of one embodiment of the first invention, (A) is a front view thereof, (B) is a sectional view taken along the line AA of (A), (C) is a sectional view taken along the line BB of (A), and (D). ) Is a side view of FIG.
Figure: Shows another embodiment of the first invention, (A) is a front view thereof, (B) (C) is a partial front view thereof, and Figure 3: Front view of another embodiment of the first invention, Fig. 4: Front view of the lifting device of the second invention one embodiment, Figs. 5 (A) and (B): Front view of another embodiment of the second invention, Fig. 6: Other embodiment of the present invention. Front view of the clasping piece, FIGS. 7 and 8: Front view of another embodiment of the second invention, FIGS. 9 (A) and (B): Front view of a lifting device of another embodiment of the present invention, Fig. 10: Side view of usage example of lifting device of the present invention Main symbols, 1: Vertical beam, 2: Right horizontal beam, 3: Left horizontal beam, 4: Horizontal beam, 5: Lifting device, 6A6B: Pivot point, 7: Stopper , 8: U-shaped groove, 9A9B:
Clipping piece, 10: right horizontal piece, 11: left horizontal piece, 12: vertical piece, 13: forward / backward axis,
14: Clamping surface, 15A15B: Locking hole, 16: Locking pin, 18: Turn buckle, 19: Tightening rod, 20: Wedge body, 21: String, 22: Energizing spring, 24: Float body, 25: Groove lid, 26: Auxiliary horizontal piece, 27: Lifting bar, 28: Lifting tool

Claims (4)

[Claims] 1. A vertical beam having an inverted L shape in which a right horizontal piece and a vertical piece intersect at an obtuse angle, or a left horizontal piece and a vertical piece intersect at an acute angle, and a vertical beam having a hanging portion at an upper end, and below the vertical beam. It consists of a combination of a right lateral beam that is pivotally supported and regulates downward rotation, and a left lateral beam that is pivotally supported above the right lateral beam and regulates downward rotation, and is sandwiched between the front ends of the left and right lateral beams. The vertical beam and the horizontal beam, each of which includes a fastening rod that is provided between the vertical beam and the horizontal beam, or a wedge body that is detachably attached to an inside portion of an intersection of the vertical beam and the horizontal beam, together with a wearing piece. The lifting tool is characterized in that the tightening lock means is provided, the pair of right and left holding pieces are brought into contact with the inside of the hoisting object, and the hoisting piece is pressed and held by the self-weight of the hoisting object. 2. A vertical beam having an inverted L shape in which a right horizontal piece and a vertical piece intersect with each other at an obtuse angle, or a left horizontal piece and a vertical piece intersect with each other at an acute angle, and a vertical beam having a hanging portion at an upper end, and a lower portion of the vertical beam. Is pivoted to, and
It is composed of a horizontal beam whose downward rotation is restricted, and is provided with a sandwiching piece facing the lower end of the vertical beam and the horizontal beam, and further, a tightening rod provided between the vertical beam and the horizontal beam, or the vertical beam. A lifting tool having a structure in which a tightening lock means for the vertical beam and the horizontal beam, which is composed of a wedge body that is detachably inserted, is provided inside the cross beam inside the cross beam. 3. The hoisting tool according to claim 1, further comprising buoyancy releasing means in which a float having a required buoyancy is provided on the cross beam and the wedge. 4. A horizontal beam of a vertical beam is constructed in a detachable connection structure, and is detachably connected to the tip of the horizontal strip so as to intersect with the horizontal strip, and a lifting portion can be attached. The lifting tool according to claim (1), (2) or (3), characterized by a combined beam structure provided with the auxiliary horizontal piece.