JPS6346552Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a hose holding device for a drilling machine.
In particular, in a drilling machine equipped with a telescoping boom that supports a guide shell, a movable hose terminal is provided to prevent the hose in the telescoping section of the boom from sagging.

[Conventional technology]

In recent years, with the advent of hydraulic rock drills, the drilling speed has increased significantly compared to pneumatic rock drills, making it possible to drill holes with the same cross-section using fewer rock drills. This necessitates a boom that covers a large area, and telescopic booms are widely used today. In drilling machines equipped with such telescoping booms, hydraulic hoses for driving the rock drill mounted on the guide shell and other hoses are arranged around the boom. In order to accommodate this, the piping was installed to match the length of the boom when it was extended, and the boom was installed in such a way that there was slack in the telescopic section of the boom when it was shortened.

[Problem that the invention attempts to solve]

However, such slack in the hose
When drilling the lower part of the face, it is dragged on the ground, and as shown in Figure 3, in the case of a boom with a guide shell rotary function, there is interference with the guide shell when the guide shell is rotated downward. This reduces the workability of the boom. In addition, the hose is prone to wear and breakage, and once breakage occurs, it takes time to repair it, reducing the efficiency of the drilling operation.

This invention solves this problem in drilling machines with telescoping booms.

Therefore, the purpose of this invention is to provide a hose holding device for a drilling machine that prevents interference between the hose of a drilling machine equipped with a telescoping boom and the ground or a guide shell, and improves work efficiency. Another object of this invention is to provide a hose holding device for a drilling machine that can prevent hose wear and damage and improve drilling efficiency.

[Means for solving problems]

The hose holding device for a drilling machine of this invention is a drilling machine equipped with a telescoping boom that supports a guide shell, and has a movable hose terminal on the fixed side of the boom that can be moved as the telescoping side of the boom moves. ing.

[Effect]

When the boom is extended or retracted, the movable hose terminal moves back and forth as the telescoping side of the boom moves, and the distance between the telescoping side of the boom and the movable hose terminal is always kept constant. There is no slack in the hose, and the slack in the hose occurs near the base to which the boom base is pivoted. Therefore, the work is not hindered by the slack in the hose.

〔Example〕

Hereinafter, embodiments of this invention will be described with reference to the drawings.

Fig. 1 is a side view of a telescoping boom equipped with a hose holding device, which is an embodiment of this invention, and Fig. 2 is a plan view thereof, with both Figs. , B shows the boom in its extended state.

In this embodiment, a boom receiver 2 is pivotally attached to a base 1 by a pivot shaft 3, and the base end of a fixed side 5a of a telescoping boom 5 is pivoted to the boom receiver 2 by an elevation shaft 6. It is worn. A swing cylinder 4 is provided between the base 1 and the boom receiver 2, and an elevation cylinder 7 is provided between the boom receiver 2 and the fixed side 5a of the boom 5, and the boom 5 can be rotated and elevated by expanding and contracting the cylinder. It's getting old.

A tilt arm 8 is attached to the tip of the telescopic side 5b of the boom 5.
is pivotally connected by a tilt shaft 9, and a tilt cylinder 10 is provided between the boom 5 and the movable side 5b so that the boom 5 can be tilted. A swing arm 11 is pivotally attached to the tilt arm 8 by a swing shaft 12, and a swing cylinder 13 is provided between the tilt arm 8 and the swing arm 8, so that the swing arm 11 can swing.

A guide mounting 14 is provided on the swing arm 11.
The guide shell 15 is supported via the guide shell 15. A rock drill 16 is mounted on the guide shell 15, and the rock drill 16 impacts and rotates the rod 17 mounted thereon to drill holes. The guide mounting 14 has a built-in rotary mechanism, and the guide shell 15 can be rotated to the position shown by the chain line. 18 is a guide slide cylinder that moves the guide shell 15 back and forth.

Here, a guide rail 19 is fixed to the fixed side 5a of the boom 5 in the direction of expansion and contraction of the boom, and a movable hose terminal 20 is provided so as to be movable while being guided by the guide rail 19. on the other hand,
A fixed hose terminal 21 is fixed to the telescopic side 5b of the boom 5, and various hoses 22 each having one end connected to a hydraulic power source or the like (not shown) are connected to the movable hose terminal 20 and the fixed hose terminal 21.
It is arranged so as not to cause any slack between the hoses, and further, piping (not shown) is provided from the fixed hose terminal 21 to the rock drill 16 and other parts around the boom. The movable hose terminal 20 is connected to the telescopic side 5b of the boom 5 by a drive arm 23, and when the boom 5 extends or contracts, it moves back and forth by the same distance as the telescopic side 5b of the boom 5 moves. Therefore, the distance between the telescopic side 5b of the boom 5 and the movable hose terminal is always kept constant, and the hose 22 does not slacken at the telescopic portion of the boom 5. The slack in the hose 22 occurs at the base 1 as shown in the figure, but since the base 1 is fixed, even if the hose 22 slacks here, it will not drag on the base or interfere with the guide shell. There is no problem with drilling work, and there is no risk of hose wear or damage.

Note that in this embodiment, the drive arm 23 is used to move the movable hose terminal 20;
As the moving means, any other drive device such as a chain, rope, or hydraulic cylinder may be used as long as it moves in synchronization with the expansion and contraction of the boom 5. Further, since the distance between the movable hose terminal 20 and the fixed hose terminal 21 is always constant, it is also possible to use a rigid conduit instead of a flexible tube such as a hose.

[Effect of the invention]

Since the hose holding device of this invention is constructed as described above, there is no slack in the hose at the front of the telescopic boom of the drilling machine, so interference between the hose and the ground or guide shell is prevented, and boom work is prevented. It is possible to improve performance, prevent wear and damage of the hose, and obtain high drilling efficiency.

[Brief explanation of the drawing]

Fig. 1 is a side view of a telescoping boom equipped with a hose holding device that is an embodiment of this invention, Fig. 2 is a plan view thereof, and Fig. 3 shows the state of slack in the hose in a conventional telescoping boom. It is a diagram. In the figure, 1 is the base, 5 is the boom, 5a is the fixed side of the boom, 5b is the telescopic side of the boom, 15 is the guide shell, 16 is the rock drill, 19 is the guide rail, 2
0 is a movable hose terminal, 21 is a fixed hose terminal, 22 is a hose, and 23 is a drive arm.

Claims (1)

[Scope of utility model registration request] A hose holding device for a drilling machine equipped with a telescoping boom that supports a guide shell, characterized in that a movable hose terminal is provided on the fixed side of the boom and is movable as the telescoping side of the boom moves. Device.