JPH09221979A - Power shovel boring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of bending without imposing heavy load on a guide shell when a power shovel boring device is installed on the ground. SOLUTION: This boring device 1 us equipped with a guide shell 3 mounting a drill 2 thereon, a guide mounting 4 bearing the guide shell 3 and a bracket 7 mounting the guide mounting 4 to the front end of an arm 6 of a power shovel 5. Then, a protect arm 20 for bearing load when the power shovel boring device 1 is installed on the ground is provided to the bracket 7, and a balance arm 21 for preventing inversion is provided to the guide shell 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power shovel drilling device for mounting on a power shovel and drilling rock or concrete.

[0002]

2. Description of the Related Art In a power shovel, a boom is provided on a turntable of a traveling carriage, an arm is attached to the tip of the boom, and a bucket is pivotally attached to the tip of the arm. The boom cylinder, the arm cylinder, and the bucket cylinder are attached to the boom. By operating, the boom and arms are raised and lowered, and the bucket is rotated back and forth to excavate earth and sand and the like.

When the work is stopped, the power shovel is required to lower the boom and the arm so that the bucket comes into contact with the ground in order to ensure safety. The boom and arm are configured to descend. Therefore, as shown in FIG. 4, when the power shovel punching device 1 is attached to the tip of the arm 6 of the power shovel 5 and used, the boom 10 and the arm 6 are automatically stopped when the work is stopped. Since there is a risk that the guide shell 3 will fall down due to the drop, the boom 10 and the arm 6 must be lowered in advance and the power shovel punching device 1 placed on the ground before stopping.

Conventionally, when the power shovel punching device 1 is placed on the ground, the support base 30 is placed on the ground, and the front and rear portions of the guide shell 3 are supported by the support base 30.

[0005]

However, since the guide shell 3 of the drilling device guides and moves the drilling machine 2 in the drilling direction, it has an elongated shell structure. When the guide shell 3 is supported by the support base 30, the boom 6 and the arm 10 of the power shovel 5 are supported.
Since the guide shell 3 supports the load of the drilling device 1 for a power shovel and the power shovel, a large load may be applied to the guide shell 3 and bending may occur. If the guide shell 3 has a strong structure to prevent the guide shell 3 from bending, the weight of the guide shell 3 increases and the cost increases.

The present invention solves the above problem in the power shovel drilling device. When the power shovel drilling device is placed on the ground, a large load is not applied to the guide shell, and the guide shell is not loaded. An object of the present invention is to provide a punching device for a power shovel that does not cause bending of the shell.

[0007]

According to the present invention, a guide shell equipped with a rock drill, a guide shell mounted with the rock drill supporting the guide shell, a guide mounting for supporting the guide shell, and a guide are provided. In a power shovel drilling device equipped with a bracket that attaches the mounting to the tip of the power shovel arm, a protect arm supporting the load when the power shovel drilling device is placed on the ground is provided on the bracket, and the guide is provided. The above problem is solved by providing a balance arm on the shell to prevent the shell from falling over.

When the power shovel drilling device is mounted on the tip of the arm of the power shovel for use, the boom and arm are lowered in advance and the power shovel drilling device is placed on the ground before stopping. At this time, the punching device for the power shovel is lowered so that the protect arm and the balance arm are on the lower side. When the power shovel drilling device descends, the protect arm grounds to support the boom, arm and power shovel drilling device load of the power shovel. The balance arm is lightly grounded to maintain stability and prevent falls.

The load when the power shovel drilling device is placed on the ground is supported by the protect arm provided on the bracket, and the balance arm is lightly grounded to maintain stability and prevent the fall of the guide shell. Is not subject to a large load and there is no risk of bending the guide shell.

[0010]

1 is a front view showing a state in which a power shovel punching device according to an embodiment of the present invention is attached to a power shovel, and FIG. 2 is a side view of the power shovel punching device. FIG. 3 is an explanatory view showing a state in which the power shovel drilling device is placed on the ground.

A drilling device 1 for a power shovel comprises a guide shell 3 on which a rock drill 2 is mounted, and the guide shell 3
And a bracket 7 for mounting the guide mounting 4 on the tip of the arm 6 of the power shovel 5. The power shovel 5 has a well-known structure, in which a boom 10 is provided on a swivel base 9 of a traveling carriage 8 and an arm 6 is pivotally supported at the tip of the boom 10. The boom cylinder 11 and the arm cylinder 12 can be raised and lowered.

A bracket 7 of the power shovel punching device 1 is attached to the tip of the arm 6. The bracket 7 is tilted by a bucket cylinder 16 provided on the arm 6, and the guide shell 3 is tilted via the guide mounting 4. A swing cylinder 17 is provided between the bracket 7 and the guide mounting 4.
Is provided, and the guide shell 3 is swung via the guide mounting 4 by the expansion and contraction of the swing cylinder 17. On the side opposite to the side where the bracket 7 is attached to the arm 6, in order to support the load when the power shovel drilling device 1 is placed on the ground, the tip of the grounding member 2 is attached.
A T-shaped protect arm 20 having 0t is fixed. A balance arm 21 is provided on the lateral side of the guide shell 3 to prevent it from falling.

When performing a drilling operation, a bucket (not shown) is removed from the tip of the arm 6 of the power shovel 5, the bracket 7 of the power shovel punching device 1 is attached to the tip of the arm 6, and the power shovel is mounted. 5 is moved to a position near a predetermined hole position and stopped.

Next, the swivel base 9 of the power shovel 5 is swung to operate the boom cylinder 11, the arm cylinder 12, and the bucket cylinder 16 to move the boom 10, the arm 6 and the bracket 7, and the swing cylinder 17 is expanded and contracted. While adjusting the swing angle of the guide mounting 4, the foot pad 1 at the tip of the guide mounting 4 is adjusted.
5 is pressed at a predetermined position on the bedrock 20, the guide slide cylinder 14 is contracted, the guide shell 3 is moved forward on the guide mounting 4, and the foot pad 13 at the front end of the guide shell 3 is pressed on the bedrock 20 to power the shovel. The drilling device 1 is positioned at the drilling position.

When the positioning is completed, the power shovel drilling device 1 drives the rock drilling machine 2 to guide it in the drilling direction by the guide shell 3 to move it forward to carry out drilling. When the drilling is completed, the boom 10 and the arm 6 are lowered in advance and the power shovel drilling device 1 is placed on the ground before stopping. At this time, the power shovel punching device 1 is lowered so that the protect arm 20 and the balance arm 21 are on the lower side. When the power shovel drilling device 1 descends, the grounding member 20t of the protect arm 20 grounds and the load of the boom 10, the arm 6 of the power shovel 5 and the power shovel drilling device 1 is supported by the protect arm 20. The balance arm 20 is lightly grounded to keep the guide shell 3 stable and prevent it from falling.

The load when the power shovel punching device 1 is placed on the ground is supported by the protect arm 20 provided on the bracket 7, and the balance arm 21 is lightly grounded to maintain stability and prevent tipping. Therefore, a large load is not applied to the guide shell 3, and the guide shell 3 is not bent.

[0017]

As described above, the punching device for a power shovel according to the present invention does not apply a large load to the guide shell when placed on the ground, and the guide shell is not likely to bend.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a power shovel punching device according to an embodiment of the present invention is attached to a power shovel.

FIG. 2 is a side view of a punching device for a power shovel.

FIG. 3 is an explanatory view showing a state in which the power shovel drilling device is placed on the ground.

FIG. 4 is an explanatory view showing a state in which a conventional power shovel drilling device is placed on the ground.

[Explanation of symbols]

 1 Punching device for power shovel 2 Drilling machine 3 Guide shell 4 Guide mounting 5 Power shovel 6 Arm 7 Bracket 8 Traveling trolley 9 Revolving base 10 Boom 11 Boom cylinder 12 Arm cylinder 13 Foot pad 14 Guide slide cylinder 15 Foot pad 16 Bucket cylinder 17 Swing cylinder 20 Protect arm 21 Balance arm

Claims (1)

[Claims] 1. A drilling device for a power shovel, comprising a guide shell equipped with a rock drill, a guide mounting for supporting the guide shell, and a bracket for mounting the guide mounting on the tip of the arm of the power shovel. The power shovel drilling device is mounted on the ground with a protect arm for supporting the load, and the guide shell is equipped with a balance arm for preventing the power shovel from falling. apparatus.