JPH044054Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a power shovel, and is mainly concerned with a power shovel used for clamping work of moving blocks.

(Prior Art) Conventionally, the following devices have been used to pinch and transport machi blocks used for bank protection construction and the like. That is, as shown in FIG. 5, a pair of clamping rods 19 extending in parallel are fixed to an L-shaped clamping leg plate 18, and by opening and closing the pair of clamping rods 19, the clamping block can be clamped. They are made to leave. Note that this device is used by being suspended by a crane or the like.

(Problem to be solved by the invention) However, in the above-mentioned conventional device, a person is required to lock or release the lock in the closed state of the clamping rod, and as a result, an auxiliary worker is required. Therefore, there are problems of poor workability and increased labor costs. Also,
Since the auxiliary worker is always near the equipment, there is a risk that the auxiliary worker may be injured by the auxiliary worker if the block falls for some reason while it is being held between the machines. The problem is that it is highly sensitive.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems of the prior art. a boom, an arm pivotally attached to the tip of the boom and swung by an arm cylinder;
A power shovel comprising a bucket belt pivotally attached to the tip of the arm and rotated by a bucket cylinder, wherein a pair of bucket belts are pivotally attached to the bucket belt at both ends of the upper part of the opening of the bucket belt. a swinging rod, a clamping rod installed at the tips of the pair of swinging rods, and a base end rotatably attached to both sides of the back of the bucket, and a tip end attached to the base end of the swinging rod, respectively. A rotatably connected hydraulic cylinder is provided, and by expanding and contracting the hydraulic cylinder, the gap between the clamping rod and the lower edge of the bucket opening is opened and closed.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Figure 1 is a perspective view of the Doba bucket, Figure 2 is a perspective view of the Doba bucket seen from the rear in Figure 1, Figure 3 is a side view of the Doba bucket attached to the arm of a power shovel, and Figure 4 The figure is an explanatory view of a work in which a power shovel according to the present invention is used to pinch and carry a block.

As shown in Figures 1 and 2, Doba Bucket 1
The base end portions of swinging rods 3 and 4 are pivotally attached to both upper ends of the opening 2, and a clamping rod 5 is installed at the tips of the pair of swinging rods 3 and 4. . Further, the base ends of hydraulic cylinders 7 and 8 are rotatably attached to both sides of the back surface 12 of the Doba bucket cart 1, and the tips of the rods 7a and 8a of the hydraulic cylinders 7 and 8 are It is rotatably connected to the base end portions of the swinging rods 3 and 4. Here, when the rods 7a, 8a of the hydraulic cylinders 7, 8 are fully extended, the clamping rod 5 touches the lower edge 2a of the opening 2.
It is made to come into contact with. In other words, by extending the rods 7a, 8a of the hydraulic cylinders 7, 8, the gripping rod 5 and the lower edge 2a of the opening 2 can grip the block. Furthermore, connecting parts 9, 9 are provided at the center of the upper part of the Doba bucket 1, and the connecting parts 9, 9 connect the Doba bucket 1 to the tip of the arm 10a of the power shovel 10. (See Figure 3).

The Doba bucket 1 is provided with a pressure oil tank 11 on its upper part, and the pressure oil tank 11 is filled with oil as a hydraulic pressure source. In addition, the Doba bucket 1 has a known pressure oil supply section 1 equipped with a hydraulic pump, a solenoid valve, etc. (not shown) on its back surface 12.
3, and the pressure oil tank 11 is connected to the hydraulic cylinders 7 and 8 via the pressure oil supply section 13. Here, the pressure oil supply section 13 includes an arm 10a and a boom 10b of the power shovel 10.
A cable 14 arranged along the main body 10c of the power shovel 10 is connected to a battery 15 mounted on the main body 10c of the power shovel 10 and a control switch 16 provided on the driver's seat 10d (see FIG. 3). and,
By controlling the pressure oil supply section 13 by opening or closing the control switch 16, the rods 7a, 8a of the hydraulic cylinders 7, 8 can be sucked or extended.

By the way, installing new hydraulic piping requires a high cost. Here, as described above, by providing the pressure oil tank 11 for operating the hydraulic cylinders 7 and 8 and the pressure oil supply section 13 on the Doba bucket 1 side, the pressure oil supply section 13 and the main body 10c of the power shovel 10 are connected. Since it is only necessary to connect the mounted battery 15 with the cable 14, manufacturing costs can be kept low compared to installing new hydraulic piping.

Next, the operation of this embodiment will be explained.

First, the control switch 16 provided on the driver's seat 10d
By opening the rods 7a and 8a of the hydraulic cylinders 7 and 8, the swing rods 3 and 4 are lifted. Then, a gap 17 is created between the clamping rod 5 installed on the swinging rods 3 and 4 and the lower edge 2a of the opening 2, and a state is reached in which the interlocking block 20 can be clamped (see FIG. 4a). . Next, the posture of the Doba bucket 1 is controlled by normal operations, and the gap 17 is directed downward. Then, the Doba bucket 1 is lowered to a position where it can hold the block 20, and the hydraulic cylinder 7,
When the rods 7a, 8a of 8 are extended, the swinging rods 3, 4 are closed, and the clamping rod 5 installed on the swinging rods 3, 4 and the lower edge 2a of the opening 2 of the bucket bucket 1 The interlock block 20 is clamped by the (see FIG. 4b). In this state, raise Doba Bucket 1 by normal operation, and move Machi Block 2.
A power shovel 10 is moved to a place where 0 is to be transported. Then, the Doba bucket 1 is lowered by normal operation. Next, the control switch 1
Rod 7 of hydraulic cylinders 7 and 8 is opened by opening operation of 6.
By suctioning a and 8a and opening the clamping rod 5 installed on the swinging rods 3 and 4, the interlocking block 20 is removed (see FIG. 4c).

(Effects of the invention) In the present invention, by configuring the power shovel as described above, it is possible to carry out the work of pinching the machine block with only the operator's operation, so there is no need for an auxiliary worker as in the conventional case. As a result,
This has the excellent effect of making it possible to smoothly carry out the work of pinching the block and contributing to a reduction in personnel costs. Furthermore, since no auxiliary worker is required, even if the block falls for some reason while the block is being held, it will not cause a serious accident.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the Doba bucket, Figure 2 is a perspective view of the Doba bucket seen from the rear in Figure 1, Figure 3 is a side view of the Doba bucket attached to the arm of a power shovel, and Figure 4 The figure is an explanatory diagram of the operation when the power shovel according to the present invention performs the work of pinching a block, and FIG. 5 is a perspective view showing the prior art. 1... Doba bucket, 2... Opening, 2a...
Lower edge, 3, 4... Swinging rod, 5... Clamping rod, 7, 8
... Hydraulic cylinder, 7a, 8a ... Rod, 10
...Power shovel, 11...Pressure oil tank, 13
... Pressure oil supply section, 14 ... Cable, 15 ... Battery, 16 ... Control switch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A boom that is pivotally attached to the main body and lifted up by a boom cylinder, an arm that is pivoted to the tip of the boom and swings by an arm cylinder, and A power shovel comprising a bucket belt pivotally mounted and rotated by a bucket cylinder, a pair of swinging rods pivotally attached to the bucket belt at both ends of the upper part of the opening of the bucket belt; A clamping rod installed at the tips of the pair of swinging rods, the base end of which is rotatably attached to both sides of the back surface of the bucket, and the tips of which are rotatably connected to the base ends of the swinging rods, respectively. A power shovel, characterized in that a hydraulic cylinder is provided, and the gap between the clamping rod and the lower edge of the bucket opening is opened and closed by expanding and contracting the hydraulic cylinder. (2) A pressure oil supply section for operating a hydraulic cylinder and a pressure oil tank connected to the pressure oil supply section are provided on the bucket side, and the pressure oil supply section is connected to the battery and the main body side by electrical wiring. 2. The power shovel according to claim 1, wherein the power shovel is connected to a control switch.