JPH0940356A - Concrete block lifting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lay a concrete block neighboring an existing concrete block by interposing a prescribed joint interval, by making a clamping plate at the fixing side coincident to the thickness of the joint, as well as clamping both side surfaces of the concrete block. SOLUTION: A pivoting shaft 4 is erected to two sheets of main plates 2 provided in parallel placing an interval, the bending part 5' of an L-shape bending arm 5 is journalled to the pivoting shaft 4, the installing hole 7 of a shackle 6 is provided to the upper tip of the bending arm 5, and a slide shaft 8 is erected to the lower side near the lower end of the bending arm 5. And parallel slide shafts 12 are provided slidable to parallel horizontal guide windows 13 provided to the main plates 2, and a right side clamping plate 14 is provided at the right end of a slide plate 10, movable laterally by hanging downward, while a left side clamping plate 15 is fixed by hanging downward at a specific position at the left end of the main plates 2 opposing to the right side clamping plate 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block hoisting tool used when laying square plate-shaped concrete blocks in order.

[0002]

2. Description of the Related Art Various concrete block hoisting tools for holding and hoisting concrete blocks and hanging them down at a predetermined place to be laid have been proposed, but the present invention merely hoists. In addition to hanging or hanging, both sides of the concrete block can be held, and at the same time, the holding plate on the fixed side can be laid next to the existing concrete block with a predetermined joint gap, depending on the joint thickness. The concrete block hoisting tool is proposed.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

Two main plates 2 arranged side by side with a gap 1 in between.
The pivot shaft 4 is installed on the right upper part of 3, and the pivot shaft 4 is
The bent portion 5 ′ of the bent arm 5 is attached to the shaft, and the mounting hole 7 of the shackle 6 is provided at the upper end portion of the bent arm 5,
A slide shaft 8 is installed near the lower end of the slide shaft 8, and both front and rear ends of the slide shaft 8 are slidably provided in horizontal guide windows 9 provided on the main plates 2 and 3, and two slide plates are provided on both front and rear sides of the slide shaft 8. Pivot the left end of 10/11 and slide plate 10
・ The right end of 11 is pivotally attached to the parallel slide shaft 12, and the parallel slide shaft 12 is slidably provided in the parallel horizontal guide window 13 provided in the main plates 2 and 3, and the right end of the slide plates 10 and 11 is provided. The right holding plate 14 is provided so as to extend downward, and the right holding plate 14 is provided so as to be movable left and right. The left holding plate 15 is provided at the left end of the main plates 2 and 3 so as to face the right holding plate 14 downward. The present invention relates to a concrete block hoisting tool which is vertically fixed at a fixed position.

Further, in the concrete block hoisting tool according to claim 1, the left holding plate 15 is a left holding plate having a different thickness.
15. The concrete block hoisting tool according to claim 1, characterized in that it is provided so as to be replaceable.

Further, in the concrete block hoisting tool according to claim 1, gripping window holes are provided in the upper left and right portions of the main plates 2 and 3.
16. The concrete block hoisting tool according to any one of claims 1 and 2, wherein 16 are provided, and a gripping portion 17 is provided on each of the gripping window holes 16.

Further, the lower end of the lock plate 18 is pivotally attached to the lower part of the central part of the main plates 2 and 3 on the left side, and the upper end part of the slide square tube 19 fitted on the lock plate 18 is attached to the tip part of the bending arm 5. The piece 21 is mounted inside the piece receiving opening window 20 that is pivotally attached to the 5 "and opened on the lock plate 18, and the shapes of the piece receiving opening window 20 and the piece 21 are locked when the bending arm 5 is lowered and the body a is The concrete block hoisting tool according to any one of claims 1 to 3, wherein the shape is selected such that the lock is released when the bending arm 5 is lifted up and lowered again.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention, which is considered to be the best, will be described with reference to the drawings, which are examples of the embodiment, by briefly showing its function and effect.

When the shackle 6 is lifted by applying the left holding plate 15 and the right holding plate 14 to the left and right sides of the concrete block b, the bending arm 5 is pulled up and rotated, and the right holding plate 15 is moved to the right to move the concrete block b. Hold in.

When the bending arm 5 is pulled up via the shackle 6 in this sandwiched state, the heavier the concrete block b is, the more it is sandwiched and the lower the concrete laying position is.

At this time, since the right holding plate 15 is set and set to a thickness corresponding to a predetermined joint interval, the right holding plate 14 is moved to the concrete block b by pushing the tip portion 5 "of the bending arm 5 downward. In this state, when the right holding plate 14 is lifted and the left holding plate 14 is pulled out, the concrete block b is laid at a predetermined position with a predetermined joint interval.

At this time, the left holding plate 15 is provided so that it can be replaced, and a plurality of left holding plates 15 having different thicknesses are prepared. What joints are used if the left holding plate 15 is adapted to the joint space? It can be installed even at intervals.

Further, since the gripping window holes 16 are opened in the upper left and right portions of the body a to form the gripping portion 17, when the body a is pulled out from the concrete block b, the left holding plate which serves as a joint ruler. When the left and right grips 17 are held when pulling up the joints 15 so as not to pry the joint space apart, the operation becomes easy, and it is convenient when carrying the body a.

Further, since the bending mechanism 5 is provided with the lock mechanism c in which the lock plate 18 and the slide square tube 19 are combined, the bending arm 5 does not rotate arbitrarily, but rotates only when necessary and the concrete block. It is an excellent concrete block hoisting tool that has practicality to hold b.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an example of a preferred embodiment of the present invention, in which a pivot shaft 4 is erected on the upper right side of two main plates 2 and 3 arranged side by side with a gap 1 therebetween. The bending portion 5'of the L-shaped bending arm 5 is axially attached to the attachment shaft 4, the mounting hole 7 of the shackle 6 is provided at the upper end of the bending arm 5, and the slide shaft 8 is provided near the lower lower end of the bending arm 5. The slide shaft 8 is slidably mounted on the front and rear ends of the slide shaft 8 in the horizontal guide windows 9 provided on the main plates 2 and 3, and the left end portions of the two slide plates 10 and 11 are pivoted on both front and rear sides of the slide shaft 8. The slide plates 10 and 11 at the right end, and the parallel slide shaft 12 is pivotally attached to the parallel slide shaft 12.
12 is slidably provided in a parallel horizontal guide window 13 provided on the main plates 2 and 3, and a right holding plate 14 is vertically installed at the right end portion of the slide plates 10 and 11 so that the right holding plate 14 is moved to the left and right. The present invention relates to a concrete block hoisting tool that is movably provided, faces the right holding plate 14 and is downwardly fixed to the left end portions of the main plates 2 and 3 downwardly at a fixed position.

The left holding plate 15 has a tapered lower surface 22 on the outer side surface.
When it is formed and placed, the defect that the adjacent concrete blocks b are pry open at the lower end of the left holding plate 15 when the body a is pulled out is corrected. The right holding plate 14 shows the case where an angle member is adopted.

Further, the left holding plate 15 is a left holding plate having a different thickness.
It is replaceable with 15.

To replace the left holding plate 15, a nut 23 is attached to the inside of the left side surface of the body a, and a bolt hole 24 is attached to the outside of the left side surface.
The left holding plate 15 provided with is attached, and the bolt 26 is screwed through the seat plate 25 so as to be replaceable.

Further, window holes for gripping are provided on the upper left and right sides of the main plates 2 and 3.
16 are provided, and a grip portion 17 is provided on each of the grip window holes 16. The grip window hole 16 is selected to have a shape that is easy to grip.

Further, the lower end of the lock plate 18 is pivotally attached to the lower part of the main plates 2 and 3 near the center of the left side, and the upper end of the slide square tube 19 fitted on the lock plate 18 is attached to the distal end of the bending arm 5. The piece 21 is mounted inside the piece receiving opening window 20 that is pivotally attached to the 5 "and opened on the lock plate 18, and the shapes of the piece receiving opening window 20 and the piece 21 are locked when the bending arm 5 is lowered and the body a is The shape is selected so that the lock is released when lifted up and the bent arm 5 is lowered again.

As shown in FIG. 10, the shape of the piece 21 is provided with V-shaped recesses 27 in opposite short pieces of a rectangular plate, and the shape of the piece receiving opening window 20 is vertically long and spreads to both sides of the bottom as shown in FIG. 28
・ 29, there are inner protrusions 30 and 31 diagonally above and below, and the piece 21 rotates counterclockwise as shown in FIG. 11b, turning vertically at the inner protrusion 30 and gradually climbing upward, and then descending. The same inward protruding portion 30 is tilted to the left and locked, but the position of the piece 21 in that state is at the center of the lower drawing (FIG. 11f), and the bending arm 5 does not rotate even if the shackle 6 is raised. When the bending arm 5 is pushed down in this state, the locked state is released, and the state shown in FIG. 11a is restored.

[0022]

Since the present invention is constructed as described above, concrete blocks can be laid with a correct joint spacing, and in the case of claim 2, the desired joint is provided by the replaceable left holding plate. It is also easy to form a space, and in the case of claim 3, since the body can be lifted with both hands, the above work can be easily performed. In the case of claim 4, the bending arm of the body can be The concrete block hoisting tool is extremely practical because it allows the right claw plate to move only when necessary due to the locking action of the hoisting rotation.

[Brief description of drawings]

FIG. 1 is a front view of a concrete block hoisting tool according to claim 1.

FIG. 2 is a plan view of the concrete block hoisting tool according to claim 1.

FIG. 3 is a front view of the concrete block lifting device according to claims 3 and 4.

FIG. 4 is a front view of the block laying operation according to the third and fourth aspects.

FIG. 5 is a front sectional view of the concrete block hoisting tool according to claims 3 and 4.

6 is a cross-sectional view taken along the line AA in FIG.

7 is a cross-sectional view taken along the line BB in FIG.

8 is a cross-sectional view taken along line CC in FIG.

9 is a cross-sectional view taken along the line DD in FIG.

FIG. 10 is a cross-sectional view of a slide rectangular tube.

11 is an explanatory view of the movement of the piece showing the locked state, FIG.
b is a lock state diagram.

[Explanation of symbols]

 a Body b Concrete block 1 Gap 2,3 Main plate 4 Pivot shaft 5 Bending arm 5'Bend 5 "Tip 6 Shackle 7 Mounting hole 8 Sliding shaft 9 Horizontal guide window 10, 11 Sliding plate 12 Parallel sliding shaft 13 Parallel Horizontal guide window 14 Right gripping plate 15 Left gripping plate 16 Gripping window hole 17 Gripping part 18 Lock plate 19 Sliding square tube 20 Piece receiving window 21 piece

Claims (4)

[Claims] 1. A pivot shaft is erected on the upper right side of two main plates that are arranged side by side with a gap therebetween, and the flex portion of an L-shaped bending arm is pivotally attached to this pivot shaft, and the flex portion is bent. A shackle mounting hole is provided at the upper tip of the arm, a slide shaft is installed near the lower end of the bending arm, and both front and rear ends of this slide shaft are slidably provided in horizontal guide windows provided on the main plate. The left ends of the two slide plates are pivotally attached to both front and rear sides, the right ends of the slide plates are pivotally attached to the parallel slide shafts, and the parallel slide shafts are slidably provided on the parallel horizontal guide windows provided on the main plate. A right holding plate is vertically provided at the right end of the slide plate so as to be movable left and right, and a left holding plate is provided at the left end of the main plate so as to face downward with the right holding plate facing the right holding plate. Concrete block suspension characterized by being fixed vertically at a fixed position Ingredient 2. The concrete block lifting device according to claim 1, wherein the left holding plate is provided so as to be replaceable with a left holding plate having a different thickness. 3. The concrete block hoisting tool according to claim 1, wherein gripping window holes are provided in the upper and left upper portions of the main plate, and gripping portions are respectively provided on the gripping window holes. The concrete block hoisting tool according to claim 1. 4. The lower end of the lock plate is pivotally attached to the lower part of the main plate toward the left side of the central portion of the main plate, and the upper end of a slide square tube fitted to the lock plate is pivotally attached to the tip of the bending arm. The piece is placed inside the piece receiving opening window opened at, and the shape of the piece receiving opening window and the piece is bent when the arm is lowered, the body is lifted and lifted,
The concrete block hoisting tool according to any one of claims 1 to 3, wherein the shape is selected such that the lock is released when the bending arm is lowered again.