JPS61235391A - Block gripper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a block gripping device for stacking blocks when constructing a retaining wall such as a retaining wall.

An analysis of the block stacking work in the construction of conventional earth retaining walls shows that the time required to transport the blocks accounts for 20 to 30% of the total work. In this block transportation work, two workers load the blocks that are collected at the base by truck into Power Syllabel packets, and this worker moves with Power Syllabel to the block loading site, and then In reality, the blocks were temporarily placed in a predetermined location from inside the packet according to the mason's instructions.

With the conventional methods described above, it takes a lot of effort to move and transport the blocks, and the workers are forced to do heavy work all the time (the footing is poor and they have to use their hands and feet to handle heavy objects). There were problems in that accidents such as pinching easily occurred and were dangerous.

Furthermore, in recent years the masonry workforce has been aging, making it difficult to secure skilled workers in the future.

In order to solve the above-mentioned problems of the conventional block stacking work, the inventors of the present invention aim to mechanize and automate the work, thereby freeing the workers from heavy labor and dangerous work, and making the work easier. The company has continued to research and develop equipment that can save labor, reduce the number of personnel, and reduce costs.

By the way, the block collection place and hemming place are 20 to 30
In many cases, the blocks are separated from each other by about +, and when mechanically gripping and transporting the blocks between them, it is preferable in terms of work efficiency to grip and transport the blocks in groups of about 5 blocks, for example.

Further, in the case of a block such as a sub-britton, for example, there is a variation in the dimensions of about ±20I11.

An object of the present invention is to provide a block gripping device that can reliably and quickly grip blocks having size variations as described above, especially as a group of blocks, and can perform work safely and efficiently. There it is.

[Configuration 1 of the Invention] The block gripping device of the present invention is such that a fixed side frame is detachably attached to the arm of a base machine such as a power shovel, and the fixed side frame is attached to the arm of a base machine such as a power shovel, and the fixed side frame is attached to the arm of a base machine such as a power shovel, and the fixed side frame is attached to the arm of a base machine such as a power shovel. A movable side frame is attached to the fixed side frame, and a backing plate that contacts the front side of the block is attached to the above-mentioned fixed side frame, and a presser plate that presses the rear side of the block is attached to the movable side frame. The blocks are opposed to each other in a downwardly narrowed state to prevent the block from falling, and the gripping member that grips the block from the front and rear faces has a side part to prevent the block from falling off. The lever is rotatably mounted, and when gripping a part of the aligned blocks, it hits an adjacent non-grasped block and rotates back upwards, and when the gripped block is pulled up, an elastic lever is attached to the outside of the block. This feature is characterized in that the block is returned to the original state and the block being gripped is held from the side.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

ff In FIG. 11, reference numeral 1 denotes a fixed frame, which can be detachably attached to the arm of a base machine such as a power shovel, as will be described later.

A backing plate 3 is attached to the inside of the fixed side frame 1 via a horizontal pin 2. The corresponding plate 3 can be rotated slightly around the horizontal pin 2, and the block B
It is possible to follow the unevenness of the surface and the variation in dimensions. Further, a non-slip plate 4 made of a rubber plate is attached to the surface of the backing plate 3 to prevent the block B from slipping.

A telescopic driving means 5 consisting of a hydraulic cylinder or the like is attached to the upper part of the fixed frame 1, and is configured to reciprocate the movable frame 6 in the direction of the arrow.

A presser plate 8 is also attached to the inside of the movable frame 6 (on the fixed frame side) via an inclined pin 7. The presser plate 8 can be slightly rotated laterally around the pin 7, so that it can follow variations in the dimensions of the block B. Further, the inclined pin 7 is
Its lower side is inclined in the direction approaching block B,
The presser plate 8, which is pivotally connected thereto, forms a taper so that the lower part of the presser plate 8 narrows between the presser plate 3 and the backing plate 3, so that the block B will never fall. Note that even if the backing plate 3 is rotated to the maximum angle of inclination, the downward taper is ensured, so the block B will never fall.

In addition, an anti-slip plate 9 such as a rubber plate is also provided on the front surface of the presser plate 8.
is attached to prevent block B from slipping.

As is clear from FIG. 2, in this embodiment, the presser plate 8 is divided into three pieces so that five blocks B can be gripped at the same time, and the left and right presser plates 8 each hold two blocks. B, and the center presser plate 8 is one block B in the middle.
It is designed to hold down.

In FIG. 1, reference numeral 10 denotes a drop-off prevention lever, which is pivotally attached to the side of the fixed side frame 1, and is configured to rotate between a solid line state and an imaginary line state. A torsion spring 11 is attached to the fall prevention lever 10,
The lever 10 is elastically biased in the direction of the solid line position.

Next, the operation of the apparatus of the above embodiment will be explained.

First, the gripping device is attached to the arm 13 of a base machine 12 such as a power sitable bell as shown in FIG. 4 via a hydraulic sill 14 or the like.

Next, the base machine 12 is moved to the block collection place, and the blocks B are arranged as shown in FIG. Adjust the orientation of the gripping device.

Next, the movable frame 6 is moved backward! ! ! (1st
Figure and Figure 3 virtual line! ! Lower it by pressing the button. When the gripping device is lowered, the drop-off prevention lever 10 moves back against the twist/N screw 11 while coming into contact with the adjacent non-gripping block B'.

When the backing plate 3 and the holding plate 8 are lowered to the front and back positions of the block B, the telescopic drive means 5 is activated to move the movable frame 6
is moved in the gripping direction (toward the fixed side frame), and the block B is gripped with the front side pressed against the back plate 3 and the rear side pressed against the press plate 8.

The irregularities on the surface of block B and the variations in dimensions should be
The holding plate 8 follows this movement and rotates slightly to securely grip it.

Next, when the gripping device is raised by the arm 13 and the Prodec B is lifted, the fall prevention lever 10 that was in elastic contact with the upper side of the adjacent block B' returns to the horizontal state, and the block being gripped It is located on the side of block B and holds block B so that it does not tilt to the side and fall.

Next, move the base machine 12 to the installation site,
With the block B being held facing the correct direction, press the fourth
Open the movable frame 6 as shown in the figure.

When the movable frame 6 opens and the presser plate 8 retreats, the block B is released so as to fall backward as shown in FIG. At this time, the fixed side frame 1 and the backing plate 3 remain stationary and do not move, so the block B never rolls down to the outside of the wall surface during the above-mentioned opening, and is placed extremely safely.

When the block B is released, the arm 13 is raised to move the gripping device upward, and the user returns to the block collection location and repeats the above operation.

[Effects of the invention] 1) The backing plate that contacts the front surface of the block and the presser plate that presses the rear surface of the block are made to face each other in a downwardly narrowed state to prevent the block from falling. There is absolutely no need to worry about it falling, so you can work extremely safely.

2) The backing plate and presser plate that grip the block are attached via pins so that they can rotate slightly, so even if there are irregularities on the block surface or variations in size, it can follow these and securely grip the block. This is particularly effective when gripping multiple blocks at the same time.

3) Since the holding plate is divided into parts, it is possible to reliably grip a plurality of blocks by following variations in their dimensions.

4) Since a drop-off prevention lever is provided on the side of the gripping member that grips the front and rear surfaces of the block, there is no need to worry about the block slipping laterally.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the block gripping device of the present invention, Fig. 2 is a perspective view showing the movable 11 frame and divided pushing plates, and Fig. 3 shows the gripping action at the block collection location. FIG. 4 is an explanatory diagram showing the working condition of the block installation at the location. 1...Fixed 1+11 frame, 2...Horizontal pin, 3
... Backing plate, 4... Anti-slip plate, 5... Telescopic drive means, 6... Movable side frame, 7... Inclined pin, 8...
... Pressing plate, 9... Anti-slip plate, 10... Fall-off prevention lever, 11... Torsion spring, 12... Base machine, 13... Arm, B... Block.

Claims (4)

[Claims] (1) A fixed frame is removably attached to the arm of a base machine such as a power shovel, a movable frame is attached to the fixed frame via a telescopic drive means such as a hydraulic cylinder, and a block is attached to the fixed frame. In addition to installing a backing plate that comes into contact with the front side, a holding plate that presses the rear face of the block is also installed on the movable side frame, and these backing plates and the holding plate are arranged to face each other in a downwardly narrowing state, so that the block can be moved. A block gripping device characterized by being designed to prevent falling. (2) Attach the above-mentioned backing plate and presser plate to the above-mentioned fixed side frame and movable side frame respectively through pins oriented in directions substantially perpendicular to each other, and hold them in a slightly downwardly constricted state. The block gripping device according to claim 1, wherein the block gripping device is rotatable. (3) The above-mentioned claim 1 or 2 is characterized in that the presser plate is horizontally divided and disposed so that it can grip the plurality of blocks by following variations in their dimensions.
The block gripping device described in Section 1. (4) A drop-off prevention lever is rotatably attached to the side part of the gripping member that grips the blocks from the front and rear surfaces, so that when gripping a part of the aligned blocks, it hits an adjacent non-grasped block and moves upward. What is claimed is: 1. A block gripping device characterized in that it rotates backward and elastically returns to the outside of the gripped block when the block is pulled up to hold the block being gripped from the side.