JPH0526110Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hose guide device for a pile driver.

[Prior art] As shown in Fig. 4, a conventional pile driver has a leader 1.
The lower part of the leader 1 is attached to a revolving body 3 on a traveling body 2 so as to be able to raise and lower, and when the leader 1 is raised from a horizontal state to a vertical position by a raising and lowering cylinder 4, it is fixedly supported by a back stay 5. Further, as shown in FIG. 4, the leader 1 includes an auger screw 6 for digging a pile hole and a hammer (not shown) for driving a pile into the pile hole, which are attached to a guide pipe 7, respectively. They are equipped with different phases so that they can be raised and lowered along the same line.

Therefore, when digging a pile hole with the auger screw 6, as shown in Fig. 4, the auger screw 6
Wire rope 9 tied to the upper end bracket 8 of
is passed through the thrust sheave 11 attached to the overhang bracket 10 at the front of the revolving structure 8
winds up and applies a downward load to the auger screw 6.

On the other hand, when pulling out the auger screw 6 from the pile hole, as shown in FIG. , and further top sheave group 1 of leader 1
5, and is then wound up by a winch 12 via a sheave 16 of the revolving structure 3, and the auger screw 6 is pulled up.

[Problems to be solved by the invention] However, in the case of such a pile driver, the sixth
As shown in the figure, a hydraulic hose 18 connected to a hydraulic motor 17 for driving the auger screw 6 is exposed in a hanging state between the motor 17 and a midway portion of the leader 1. The length of the hose 18 is such that it can follow the vertical movement of the auger screw 6, that is, the vertical displacement of the motor 17.
If it swings in a slack state, there is a risk that it will come into contact with the auger screw 6 and cause damage.
In addition, 19 is a hydraulic pipe led out from the motor 17,
20 is a hydraulic pipe connected to a hose fed out from the revolving body 3 and laid along the leader 1 at a predetermined height; 21 and 22 are connection portions of the hose 18, respectively.

[Means for Solving the Problems] The present invention provides a state in which a hydraulic hose for the auger screw drive motor protrudes below the support frame of the auger screw drive motor that moves up and down along the leader. a guide frame that can be moved up and down along the leader, and the other end of the guide wire having one end fixed to the support frame;
After being hung around a sheave provided on the guide frame, the hydraulic hose is fixed at a predetermined position on the leader, and the guide frame is suspended and supported by a support frame, and the hydraulic hose is attached with the hanging curved portion thereof protruding downward. The upper part near the hanging curved part is movably inserted into the guide frame.

[Function] When the motor moves up and down, the guide frame also moves up and down.
As the hanging curved part of the hydraulic hose shifts, the position near the hanging curved part is always held in the guide frame without applying any special force with the hanging curved part protruding from the lower surface of the guide frame. , the swinging of the hydraulic hose will be prevented.

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

As shown in FIGS. 1 and 2, the guide frame 23 is movable up and down at a position below the motor 17 of the leader 1 so as to extend toward the hanging portion of the hose 18 through engagement with the guide pipe 7. In addition to providing
One end of the guide wire 25 is fixed to the lower part of the frame 24 that supports the motor 17, and the other end of the guide wire 25 is wrapped around a sheave 26 provided on the guide frame 23, and then fixed to a position near the hose connection part 22 on the outside of the leader 1. Then, the guide frame 23 is suspended and supported from the frame 24 that supports the motor 17. or,
The hose 18 is movably inserted into the guide frame 23 near the hanging curved part, and the insertion part of the hose 18 is connected to two sets of guide rollers 27, 27 and 28, 2.
Guide from the surrounding area at 8. As shown in FIG. 2, the hoses 18 are made up of two sets, one on the oil pressure supply side and one on the return side.

In this configuration, in order to dig a pile hole using the auger screw 6, when the frame 24 supporting the motor 17 is lowered as shown in FIG.
The guide frame 23 suspended from the frame 24 via the guide wire 25 also descends. At this time, since one end of the guide wire 25 is fixed to the leader 1, the amount of descent of the guide frame 23 is half the amount of descent of the frame 24. Also frame 24
The hose connection part 21 on the motor 17 side
Since the position of the hose 18 is lowered, the position of the hanging curved portion of the hose 18 also moves downward. At this time, since the amount of movement of the hanging curved portion of the hose 18 is equal to the amount of descent of the guide frame 23, the guide frame 2
3, the position near the hanging curved portion of the hose 18 can be maintained smoothly at all times by the respective guide rollers 27 and 28.

In this way, the hose 18 is held without applying any special force, with the position near the hanging curved part always inserted into the guide frame 23 and the vertical curved part protruding from the lower surface of the guide frame 23.
There is no interference with the auger screw 6 due to vibrations, etc., and there is no need to provide special specifications to the connection part of the hose 18.

Incidentally, in the above embodiment, only the hydraulic hose 18 was targeted, but it goes without saying that the same method can be applied to cables of attached equipment, cab tire cables of electric motors, and the like.

[Effects of the invention] As explained above, according to the hose guide device of the pile driver of the invention, the position near the hanging curved part of the hydraulic hose can be positioned with the guide frame in such a way that the vertical curved part always protrudes from the bottom surface. Since the hydraulic hose can be held without applying special force (maintaining a natural state), the hydraulic hose will not interfere with the auger screw due to vibrations, etc., and damage accidents can be prevented. Moreover, since no special force is applied to hold the hydraulic hose (by keeping it in a naturally hanging state), there is no need to make any special specifications for the hydraulic hose, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is an explanatory view showing the hose guide device of the pile driver of the present invention, Fig. 2 is an enlarged view of Fig. 1 in the - arrow direction, Fig. 3 is an explanatory view of the operating state, Figs.
Each figure is an explanatory diagram of the working state of the pile driver, and FIG. 6 is a partial diagram for explaining the problems of the conventional pile driver. 1 is a leader, 6 is an auger screw, 7 is a guide pipe, 17 is a hydraulic motor, 18 is a hydraulic hose, 23 is a guide frame, 24 is a frame, 2
5 is a guide wire, and 26 is a sheave.

Claims (1)

[Scope of utility model registration request] A guide frame that can be moved up and down along the leader is provided below the support frame of the auger screw drive motor that moves up and down along the leader, and protrudes toward the hanging side of the hydraulic hose to the auger screw drive motor. , the other end of the guide wire having one end fixed to the support frame is hung around a sheave provided on the guide frame, and then fixed to a desired position of the leader, so that the guide frame is suspended and supported by the support frame; A hose guide device for a pile driving machine, characterized in that an upper portion of the hydraulic hose near the drooping curved portion is movably inserted into the guide frame with the drooping curved portion protruding downward.