JP2001233581A - Block suspending device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change the posture of a block suspended. SOLUTION: A rotational shaft 5 is mounted to a suspending frame 1, and the shaft 5 and a pair of holding members 7, 8 which hold a block 30 are connected to each other by a parallel link mechanism 15. By rotating the shaft through turning a handle 20, the members 7, 8 are turned. Accordingly, the block 30 suspended from the frame 1 can be changed in its posture into arbitral one.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block lifting apparatus used for constructing a concrete block on a river, a slope, or a mountain, for example.

[0002]

2. Description of the Related Art Conventionally, as a method of lifting a concrete block, for example, a method of embedding an anchor bolt in a concrete block and hooking a wire rope or the like on the anchor bolt to lift the concrete block is known. However, in such a method of hanging the anchor bolt with a rope and lifting it, the posture of the lifted block cannot be changed. Therefore, for example, when molding a block,
If the block is molded in an unstable shape, that is, if the center of gravity of the block is offset, etc., after removing the block, lift the block, place it on it, and If you remove the rope, the block will fall and it is extremely dangerous. Also, in the construction of the block, the posture of the block at the time of molding and the posture in which the block is laid do not always match. For example, even when a block is molded in a substantially vertical posture, it may be laid in a horizontal posture during construction. However, as described above, the method of simply hanging a wire rope or the like on the anchor bolt and lifting the block cannot not only change the posture of the block, but also lift the anchor bolt embedded in the concrete block with the rope. In this case, it is difficult to lift a plurality of blocks at the same time, and it is inefficient to lift and pile one block at a time on concrete blocks. Worse.

[0003] The present invention provides a block lifting apparatus capable of easily changing the position of a block to be lifted by solving such a problem and simultaneously lifting a plurality of blocks to change the position of the block. The purpose is to provide.

[0004]

According to a first aspect of the present invention, there is provided a lifting apparatus for a block, comprising: a pair of holding members for holding the blocks across a plurality of blocks aligned with each other; and a lifting frame for supporting each of the holding members. And a lifting mechanism for a block provided with a hanging portion provided on the lifting frame, wherein a rotation mechanism for changing the posture of the block suspended by the lifting frame by rotating each of the holding members is provided.

[0005] With the above configuration, it is possible to mount the lifting frame on the aligned blocks, hold the block by the holding member, and then lift the blocks all at once via the lifting frame. Thereafter, the posture of the block suspended by the lifting frame can be changed by rotating the block held by the holding member by a rotation mechanism.

According to a second aspect of the present invention, there is provided the lifting device for a block according to the first aspect, wherein the rotating mechanism includes a rotating shaft pivotally attached to the lifting frame, and a driving means for rotating the rotating shaft. Since the rotation shaft and the respective holding members are constituted by a parallel link mechanism, the rotation of the rotation shaft causes the rotation of the rotation shaft to block the block with the parallel link mechanism interposed therebetween. The suspended holding member rotates. Thereby, the block held by the holding member rotates, and the posture of the suspended block can be changed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a block lifting device according to the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a lifting frame having an H-shaped cross section, and a pair of left and right lifting plates 3 for connecting a lifting wire 2 is integrally connected to the upper side of the lifting frame 1, and both sides of the lifting frame 1 The four support plates 4 are integrally connected to the two central portions downward by appropriate means such as welding. Further, a rotary shaft 5 is supported on the support plate 4 so as to extend horizontally. The rotary shaft 5 protrudes from the left and right support plates 4, 4, and first link arms 6 are fixed to both ends of the rotary shaft 5 protruding from the support plates 4, 4.

Reference numerals 7 and 8 denote a pair of left and right holding members formed of a hollow pipe. Each of the holding members 7 and 8 is connected to the first link arm 6 by a pair of left and right connection arms 10 and 11, respectively. Further, the holding members 7, 8 are connected to each other by a second link arm 12. In addition,
A second link arm 12 connecting the holding members 7 and 8 has one end pivotally connected to one second link arm 12 so as to be rotatable, and a hook-shaped hook formed at the other end of the second link arm 12.
13 is locked to the other holding member 8, and the holding members 7, 8 are connected. The first and second link arms 6 and 9 and the connecting arms 10 and 11 provide a parallel link mechanism 1.
Make up five.

A handle 20 for operating the rotary shaft 5 is pivotally supported at the center of the lifting frame 1. A worm 22 fixed to the handle shaft 21 meshes with a worm wheel 23 fixed to the rotary shaft 5. A drive mechanism 25 for rotating the rotating shaft 5 by the handle 20, the worm 22, and the worm wheel 23 is configured. Then, the rotating shaft 5 is rotated by the driving mechanism 25 and the rotating shaft 5 is rotated.
With the rotation of the rotating shaft 5, the holding members 7, 8 rotate in conjunction with the rotating shaft 5 and are held by the holding members 7, 8 by the parallel link mechanism 15 connecting the rotating shaft 5 and the holding members 7, 8. The drive mechanism 25 and the parallel link mechanism 15 constitute a rotation mechanism.

The block 30 lifted by the lifting frame 1 is formed by a concrete form not shown in FIG.
As shown in the figure, a plurality (six in this embodiment) are molded at the same time, the front surface is a pattern portion 31 imitating natural stone, and the upper and lower surfaces of the block 30 are block
When the 30 is laid, a projection 32 and a recess 33 are formed to fit each other. Further, the upper surface and the lower surface of the block 30 are inclined with respect to the front pattern portion 31 imitating natural stone. And
The block 30 is lifted by hooking the holding members 7 and 8 on the projection 32 and the recess 33 of the block 30. In addition,
These blocks 30 are integrated by a horizontal streak 33 penetrating in the horizontal direction.

The operation and effect of the lifting device of the block 30 configured as described above will be described. First, lifting of the block 30 after molding will be described. Open the side frame of the concrete mold (not shown) and open the mold. At this time, the pattern portion 31 on the front surface is molded by the bottom frame of the concrete formwork, and is molded in a state where the pattern portion 31 to be the front surface is arranged on the back surface side during construction. Then, the lifting frame 1 is mounted on the block 30. That is, one of the holding members 7 pivotally attached to the rotating shaft 5 via the first link arm 6 and the left and right connecting arms 10 and 11 is hooked on the protrusion 32 formed on one side surface of the block 30. The other holding member 8 is hooked on the concave portion 33 formed on the other side surface of the 30. Thereafter, the hook 13 of the second link arm 9 pivotally attached to one of the holding members 7 is hooked on the other holding member 8, so that the lifting frames 1 are mounted on the aligned blocks 30. Thereafter, the lifting wires 2 connected to the lifting plate 3 are pulled up, whereby the blocks 30 are lifted all at once, and the pattern portion 31 of the block 30 is released from the bottom frame of the concrete formwork (not shown). After removing each block 30 from the concrete form in this way, handle
By rotating 20, the rotating shaft 5 is rotated by the engagement between the worm 22 and the worm wheel 23. As a result, the second link connected via the first link arm 6 and the connecting arms 10 and 11 is
Link 9 is inclined, and the block 30 held by the holding members 7, 8 is inclined in an arbitrary direction. That is, each block 30 shown in FIG. 1 can be lifted from a substantially vertical posture to a substantially horizontal posture as shown in FIG. After each block 30 is lifted in a vertical position and removed from the mold, each block 30
Can be changed to a horizontal position and lifted. For this reason, the block 30 can be raised and lowered in a substantially horizontal state when storing, transporting or laying the block 30 after removal from the mold. Although FIG. 3 shows a case where the block 30 is rotated to a horizontal state, the posture of the block 30 can be arbitrarily set by rotating the handle 20.

As described above, in this embodiment, the holding members 7, 8 for holding the block 30 can be changed to an arbitrary angle by rotating the handle 20. In particular, in this embodiment, the block 30 is a deformed square type, and the center of gravity of the block 30 is extremely unstable in a vertical state at the time of molding, but it is extremely unstable, but it is turned horizontally. Can be done. Also, when the block 30 is constructed, the blocks 30 can be stacked and laid in the horizontal direction. Therefore, when the block 30 is laid, the posture of the block 30 can be set arbitrarily according to the inclination of the installation surface. Further, since the plurality of blocks 30 arranged in an aligned state can be simultaneously lifted as they are by the holding members 7 and 8 bridged over the lifting frame 1, it is extremely efficient.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments.
Various modifications can be made within the scope of the present invention.
For example, the shape of the block is not limited to the above embodiment. Further, the connection structure between the movable holding member and the lifting frame may be appropriately selected. Further, in the above-described embodiment, the example in which the block is rotated by the manual operation of the handle is shown. However, the block may be rotated by an electric means such as a motor.

[0014]

According to the block lifting device of the first aspect, a pair of holding members for holding the blocks across a plurality of blocks aligned with each other, a lifting frame for supporting each of the holding members, In the lifting device for a block provided with a hanging portion provided on the lifting frame, a rotation mechanism for rotating each of the holding members to change a posture of the block suspended by the lifting frame is provided. , It is possible to easily change the posture of the block to be lifted.

According to a second aspect of the present invention, there is provided the lifting apparatus for a block according to the first aspect, wherein the rotating mechanism comprises: a rotating shaft pivotally attached to the lifting frame; and a driving means for rotating the rotating shaft. Since the rotating shaft and the parallel link mechanism that pivotally connects the respective holding members, the holding member that suspends the block via the parallel link mechanism is rotated by the rotation of the rotating shaft, The block held by the holding member can rotate.

[Brief description of the drawings]

FIG. 1 is a side view showing a lifting device according to a first embodiment of the present invention, and has a handle shaft as a cross section.

FIG. 2 is a front view of the lifting device.

FIG. 3 is a side view of the lifting device showing a state in which the above-mentioned block is horizontally lifted, and a handle shaft is a cross section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lifting frame 5 Rotating shaft 6 First link arm 7, 8 Holding member 9 Second link arm 10, 11 Connecting arm 15 Parallel link mechanism 20 Handle (drive mechanism) 22 Worm (drive mechanism) 23 Worm wheel (drive mechanism) ) 30 blocks

Claims (2)

[Claims] 1. A block comprising: a pair of holding members that hold blocks across a plurality of blocks aligned with each other, a lifting frame that supports each of the holding members, and a hanging portion provided on the lifting frame. The lifting device for a block according to any one of claims 1 to 3, further comprising a rotation mechanism configured to rotate the holding members to change a posture of the block suspended by the lifting frame. 2. The rotating mechanism comprises a rotating shaft pivotally attached to the lifting frame, a driving unit for rotating the rotating shaft, and a parallel link mechanism for pivotally connecting the rotating shaft to each of the holding members. The lifting device according to claim 1, wherein the lifting device is provided.