JP2725025B2 - Construction machines for block masonry - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine used for a block masonry method such as a formwork concrete block or a reinforced concrete block.

2. Description of the Related Art Masonry work for houses and other buildings constructed by block masonry has conventionally been performed in the following procedure.

. Each block transported by truck while being placed on a pallet is manually dropped by a worker, or each pallet is dropped by a crane or the like.

. The worker transports the block that has been dropped as described above to the masonry position by manpower, and lifts the block to a predetermined masonry position and stacks it.

Such work is the same even when the construction position is at a high place, and basically, the movement of the blocks and the masonry work are performed mainly by human power. Although a lifting machine has been devised that only transports the block to the masonry position and further lifts the block to a predetermined height position (Japanese Utility Model Laid-Open No. 60-184944), the handling operation to the masonry position requires manual operation. Had to be done by

Problems to be Solved by the Invention As described above, in the conventional work, a large amount of manual work is required, and a large number of heavy blocks must be lifted or carried a day. There is a drawback that physical fatigue is extremely large and work efficiency cannot be said to be good.

The present invention has been made for the purpose of reducing the burden on an operator in such a conventional block construction work.

Means for Solving the Problems In order to achieve the above object, according to the present invention, a traveling vehicle on which a block is loaded, an elevating platform mounted on the traveling vehicle, a driving device for vertically driving the elevating platform, A first arm rotatably mounted on the table in a horizontal direction, a second arm rotatably mounted on the first arm in a horizontal direction, and a rod protruding downward while being mounted on a tip of the second arm; Vertical cylinder,
And a locking device for lifting the block attached to the tip of the rod.

The lifting platform is lifted in a state where the block is locked by the locking tool at the tip of the arm, so that the block is raised to a predetermined height position. Next, the arm is manually rotated in the horizontal direction to be positioned above the predetermined masonry position, and thereafter, the vertical movement cylinder is operated to lower the block to the masonry position, so that a large force is applied. Masonry work can be performed without need.

Embodiment Next, an embodiment of the present invention will be described. In FIGS. 1 and 3, (1) has two wheels (2) and (2) at its front end and a center at the rear end. This is a traveling vehicle in the form of a rectangular plate provided with one driving wheel (3). As shown in FIG. 3, a block (4) is provided on the upper surface of the traveling vehicle (1).
(4) ... are loaded. Traveling trolley (1)
A power unit (6) composed of a hydraulic pump for driving a lifting cylinder to be described later, a power supply device (7) such as a battery, and a driving wheel (3) A power transmission drive unit (8) for driving a drive cylinder or a lift cylinder described below is also mounted.

A pair of left and right outer masts (9) and (9) are erected at the rear end of the traveling vehicle (1), and the outer mast (9) is further provided.
The inner masts (10) and (10) are slidably mounted vertically so as to protrude upward from (9). (11) The upper connecting beam connecting the outer mast (9) and the upper end (9), (1)
2) also shows an intermediate connecting beam for connecting the intermediate portions. The upper ends of the inner masts (10) are connected by a similar upper connecting beam (13), and the lower ends thereof are connected by a lower connecting beam (14). At the center between the outer masts (9) and (9), lift cylinders (1
5) is mounted vertically and this lifting cylinder (1) protrudes above the upper connecting beam (11).
The upper end of the rod (16) of 5) is connected to the upper connecting beam (13) between the inner masts (10) (10).

On the inner masts (10) and (10), the elevating table (17) of the present invention is arranged so as to be vertically movable. Elevator (17)
One end of each of a pair of left and right chains (18) (18) is connected to the upper end of the chain. These chains (18) (18)
Is wound around a sprocket (19) (19) attached to the inside of the upper end of the inner mast (10) (10), and then the intermediate connecting beam (9) between the outer mast (9) (9) 1
2) is fixed to. These chains (18) (18)
Is similar to an elevating chain used in a general forklift. When the elevating cylinder (15) is operated to extend the rod (16), the inner mast (10) (10) Is pushed upward, but at the same time,
The lifting platform (17) can be lifted upward by the chains (18) (18).

The first arm (21) of the present invention is mounted on the upper surface of the lifting platform (17) via a bracket (20) so as to be rotatable in the horizontal direction. Similarly, a second arm (22) is similarly attached to the tip of the first arm (21) so as to be rotatable in the left-right direction. (23) is a vertically moving cylinder according to the present invention, which is horizontally rotatably attached to the distal ends of the second arms (22) and (22) such that the rod (24) faces downward. . A lock (25) for locking and lifting the block (4) is attached to a lower end of the rod (24). This vertical cylinder (2
3) is a so-called spring restoring type known in the art, and the rod (2) is fixed to the block (4) with the locking member (25).
When block 4) is contracted upward, block (4) is raised, and when block 4 is extended downward, block (4) is also lowered.
When the block (4) is unlocked and no load is applied,
The rod (24) is configured to be automatically contracted by a spring inside the cylinder to pull up the locking member (25). As shown in FIG. 2, the bracket (20) supporting the first arm (21) has rolling rollers (26) and (26) on its lower surface. )
(26) is mounted inside a lift frame (27) having a groove-shaped cross section so as to be movable in the left-right direction, so that, for example, when there is a block loading position on the left side in FIG. The bracket (20) is moved to the left, and when it is on the right, it is moved to the opposite side so that the bracket (20) can be installed closer to the block loading position side. (29)
Is a holding bolt screwed into the plate portion of the bracket (20) from above. When the holding bolt (29) is screwed down, and its tip abuts against the bottom of the lifting frame (27), Roller (26) (26) is frame (27)
It is pressed against the upper wall surface inside and fixed at that position.

Next, a procedure of a construction operation using the construction machine will be described. First, as shown in FIG. 1, with a large number of blocks (4), (4),.
The driving wheels (3) are driven to transfer to a predetermined loading position. Next, the elevating cylinder (15) is operated, the rod (16) is contracted to lower the elevating table (17), and the up-and-down moving cylinder (23) is placed directly above the target block (4) to be lifted. Position. In this state, when the vertical movement cylinder (23) is operated to extend the rod (24), the locking member (25) is lowered and inserted into the block (4) as shown in FIG. Next, the lock (25)
Rotate 90 ° to lock it on the lower surface of block (4). Thereafter, the rod (24) of the vertical movement cylinder (23) is contracted and lifted, and the lift (17) is moved upward to lift the block (4) to a predetermined height. Next, as shown in FIG. 4, the lifted block (4) is moved by hand to just above a predetermined loading position.
The arms (21) and (21) are rotated. Then, when the vertical movement cylinder (23) is operated again to extend the rod (24), the block (4) is gently set at a predetermined position. In this state, when the lock (25) is turned 90 ° in the opposite direction to release the lock, the cylinder (23)
The rod (24) automatically contracts and comes out of the block (4) by the force of the inner spring, so that the same operation as above is repeated again, and the blocks are sequentially stacked. FIG. 5 shows the range of rotation of the arms (21) and (22). As shown in FIG. 5, the first arm (21) and the second arm (22) are appropriately rotated. Accordingly, the locking tool (25) at the tip thereof can be engaged regardless of the position of the block (4) at any position within the rotation range of the first arm (21) and the rotation range of the second arm (22). The block (4) can be locked by moving the stopper (25), or the locked block (4) can be moved to a predetermined position, and it is not necessary to move the entire device finely.

As described above, according to the present invention, the phase shift from the block to the masonry position to the masonry operation can be performed with almost no need for a large force. Is significantly reduced compared to the conventional one, and
The effect of improving work efficiency is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a construction machine of the present invention, FIG. 2 is a longitudinal sectional view of a main part of FIG. 1, and FIG. , FIG.
Similarly, FIG. 5 is a perspective view showing a state in the middle of the concrete masonry work, and FIG. 5 is a plan view showing a rotation range of the arm. (1)… traveling trolley, (4)… concrete block, (6)… hydraulic pump (elevating drive), (17)… elevating platform, (21)… first arm, (22)… … Second arm, (23)… vertical cylinder, (25)… locking tool.

Claims (1)

(57) [Claims] 1. A traveling vehicle on which blocks are loaded, an elevator mounted on the traveling vehicle, a driving device for driving the elevator up and down, and a first arm mounted on the elevator to be rotatable in the horizontal direction. A second arm attached to the first arm so as to be freely rotatable in the horizontal direction, an up-down moving cylinder attached to the tip of the second arm and having a rod protruding downward, and attached to the tip of the rod. A construction machine for block masonry, comprising a lock for lifting a block.