JP2001055736A - Bearing device of hose for pile driver, and mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing device for bearing hoses connecting between an excavation device boring in the ground and a base machine with simple constitution and a method easily mounting the bearing device to the pile driver. SOLUTION: This bearing device of hoses for a pile driver is constituted of a hanger 8 suspending the hoses from a base machine 1 provided to an approximately middle height position of a leader 2, an upper guide 11 hung down to a winch by interlocking with a guide rail 2a of the leader 2 in a slidable manner and a lower guide 12 fixed to the lower part of the leader 2 and rotated with the movement of the hoses, and the upper guide 11 is constituted of a fixed guide section 26 suspending the hoses from the hanger 8 and a rotatable guide section 27 leading the hoses from the fixed guide section 26 to an excavation device 5 by way of the lower guide 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose and cable supporting device for connecting a drilling tool guided by a leader of a pile driving machine and digging into the ground and a base machine, and a pile driving device for the hose and cable. The present invention relates to a method for easily assembling the apparatus.

[0002]

2. Description of the Related Art As shown in FIG. 7, in a pile driving machine, a leader 2 is erected in front of a base machine 1 running on a crawler belt, and a drive device for an earth auger or an excavator is moved up and down on a guide rail 2a of the leader 2. FIG. 7 shows a state in which a drilling tool 5 equipped with a hydraulic motor is attached to a multi-stage type kelly bar 4 and the kelly bar 4 is engaged with a guide rail 2a and hung. ing.

As the digging tool 5 digs into the ground, a hydraulic hose 7 and a signal cable 6 connected to a hydraulic source provided in the base machine 1 and the like extend deep into the ground together with the digging tool 5. I do. Conventionally, hoses such as a hydraulic hose 7 and a signal cable 6 are wound around a hose reel 51 and a cable reel 50 rotatably supported by the reader 2, and the hose and the cable are entangled when the drilling tool 5 is moved up and down. Rubbing with each part of the base machine 1 and the wire rope, and the like.

[0004]

However, in such a conventional apparatus, when a hose or a cable is long or has a plurality of hoses, the hose reel or the cable reel becomes large and heavy, and it is difficult to attach it to the reader. Or when the reader is turned, it interferes with another device, for example, the pendant rope 9. When attaching a hose reel or a cable reel to a pile driver, it is necessary to prepare a crane separately and perform the work at a high place.

Accordingly, the present invention provides a hose supporting device for supporting a hose for connecting between a drilling tool for excavating into the ground and a base machine with a simple configuration, and the supporting device for a pile driving machine. It is intended to provide a simple assembling method.

[0006]

In order to achieve the above object, the present invention employs the following means. That is, in a hose-supporting device for a pile driver that supports a hose that connects between a base tool and an excavator that is guided by a guide rail of a leader of the standing pile driver and excavates into the ground, A hanger that is provided at a substantially intermediate height of the base machine to suspend hoses from the base machine, an upper guide slidably engaged with a guide rail of the reader and suspended by a winch, and fixed to a lower portion of the reader. The upper guide is provided with a fixed guide portion for suspending the hoses from the hanger, and excavating hoses from the fixed guide portion via the lower guide. And a rotatable rotation guide portion for guiding to the tool.

The pile driving machine referred to here is not a pile driving hammer such as a hydraulic hammer or a pile hammer, but has a leader standing in front of a base machine and an earth auger or a ground improvement device mounted on a guide rail of the leader. To guide the engagement and to perform excavation and the like. The present invention is applied to an excavator on which a hydraulic motor or an electric motor is mounted and which goes deep into the ground.

[0008] Therefore, a device such as an earth auger or a hydraulic hammer in which a driving device (a hydraulic motor, an electric motor, or the like) simply moves over the entire length of the reader is excluded. The hoses from the base machine are once suspended by a hanger provided substantially in the middle of the reader, and further suspended by a fixed guide portion of an upper guide above the reader. Then, it is passed over the rotation guide portion of the upper guide via the lower guide below the leader, and is connected to the excavator. The upper guide is suspended by engaging with the guide rail of the leader, and descends along the leader as the drilling tool excavates. That is,
The hoses do not move from the base machine to the fixed guide portion even when the digging tool digs, and the lower guide and the rotating guide portion move as the digging tool moves up and down. for that reason,
The lower guide and the rotation guide portion are rotatable guides,
Avoid sliding with hoses.

It is preferable to lower the upper guide in synchronism with the excavation of the excavator since no tensile force acts on the hoses. However, in order to lower the upper guide in synchronization with the excavation of the excavator, complicated control is required. Therefore, it is convenient to always suspend the upper guide with a small lifting force. In this case, the hoses are pulled along with the excavation of the digging tool, and the upper guide descends. Therefore, it is necessary to use hoses that can withstand this pulling force.

As means for preventing the hoses from receiving a pulling force, one end of the chain is locked to the upper guide, and the other end is pivotally guided by the lower guide and the upper guide. The chain is provided with a clamp for locking the hoses at predetermined intervals at predetermined intervals so that the chain receives the tensile force applied to the hoses as the drilling tool advances. It is better to The same effect can be obtained by using a wire instead of a chain,
The present invention does not exclude this.

When the hose supporting device of the present invention is assembled to a pile driving machine, the upper guide and the lower guide are connected and suspended by a winch of a base machine. If the lower guide is fixed to the leader by lifting it up and engaging it with the guide rail of the leader, and then the upper guide and lower guide are disconnected and the upper guide is raised, another crane is not required. It is easy to assemble without the need.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same components as those in FIG. 7 described in the conventional example are denoted by the same reference numerals. As shown in FIG. 1, the pile driving machine has a leader 2 supported by a back stay 3 standing in front of a base machine 1 and a guide rail 2a of the leader 2 having a kelly bar 4 having an excavation tool 5 attached to a lower end thereof. As shown in FIG. 2, it is suspended by a main wire 17 laid over a main winch 13 provided on the base machine 1 via a top sheave 15. The kelly bar 4 is a multi-stage type having an outer kelly bar and an inner kelly bar, and the excavating tool 5 has a cutting blade which is driven to rotate by two built-in hydraulic motors (not shown).

The plurality of hydraulic hoses connected to the hydraulic motor are connected to a hydraulic unit of the base machine 1. In addition, a hose and a signal cable for supplying a ground improvement agent are also connected to the excavator 5, and these hoses are also connected to the base machine 1.

An apparatus for supporting these hoses includes a hanger 8 suspended from a mounting portion of the back stay 3 on the back of the leader 2, an upper guide 11 which engages with a guide rail 2a of the leader 2 and moves up and down. And a lower guide 12 fixed to the lower portion of the lower guide. And upper guide 1
1 is suspended by a wire 14 laid over a winch 16 provided on the base machine 1 via a top sheave 15.

The hanger 8 is a semicircular member having an appropriate diameter so that the hose is not bent. The hoses drawn from the base machine 1 are first suspended by the hanger 8. As shown in FIG. 3, the upper guide 11 is provided with connecting members 22 on both upper sides of an upper guide body 21, and fixed guide portions 26 are fixed to the connecting members 22. A shaft 23 is provided at a lower portion of the shaft 23, and a rotation guide 27 is provided on the shaft 23.

A winch 16 is provided above the upper guide body 21.
Pulley 30 for hanging with the wire 14 drawn out of the pulley
Are provided, and a guide rail 2a of the reader 2 is provided.
And a guide roller 25 that engages with the guide rail 2a and rolls below the guide 24.

The fixed guide portion 26 is formed by connecting two plate members 26a with a plurality of connecting rods 26b.
A hose is hung over the outside of the. The rotation guide 27 is
A pair of sprockets 29 is rotatably provided on the shaft 23, and a chain 35 is bridged over the sprocket 29, as shown in FIG. The clamps 28 are fixed to the chain 35 at a pitch of about 1 m. One end 37 of the chain 35 is connected to the plate member 27a, and the other end is connected to the excavator 5.

Reference numeral 27b is the same as the connecting rod 26b, and is the end of the fixed guide portion 26. Next, as shown in FIG. 3, the lower guide 12 has a pair of sprockets 34 rotatably provided on the shaft 32, and has a configuration similar to that of the above-mentioned rotary guide 27. A chain 35 is hung over the sprocket 34. Reference numeral 33 denotes a locking member fixed to the reader 2. 40 is an upper guide 11 and a lower guide 12
This is a connecting bracket that is used for transporting and attaching to a pile driver.

As shown in FIG. 4, both ends of the clamp 28 are attached to the link 35a of the chain 35, and the clamp 28 is fastened by bolts 47 with the clamp members 43 and 44 being sandwiched between the plates 41 and 42. Clamp materials 43, 44
Are formed with a locking hole 46 for inserting and fixing a cable, and a locking hole 45 for inserting and fixing a hydraulic hose.

Next, the operation of the thus configured hose supporting device will be described. First, FIGS. 1 and 2
As shown in the figure, hoses such as a hydraulic hose 7 and a cable 6 are connected to a hanger 8 suspended in the middle of the reader 2 from a hydraulic drive source and a power supply of the base machine 1 via a control valve and an operation panel. Passed and fixed. Then, from the hanger 8, it is bridged over the fixed guide portion 26 of the upper guide 11, then is bridged over the sprocket 34 of the lower guide 12, and further upward, the sprocket of the rotation guide portion 27 of the upper guide 11. It is connected to the excavating tool 5 after being bridged over 29.

The hoses are connected to the upper guide 1 described above.
From the one fixed guide portion 26 onward, it is locked by a clamp 28 attached to a chain 35 so that a tensile force is not applied. When the digging tool 5 digs in the ground, the winch 13 is free on the side from which the wire is drawn out, and the keriba 4 descends as the digging tool 5 digs.

On the other hand, the winch 16 for suspending the upper guide 11 is suspended by such a small force that the upper guide 11 does not descend. Therefore, when the excavator 5 excavates and descends, the chain 35 is pulled, and the upper guide 11 descends along the leader 2. With this,
The sprocket 34 of the lower guide 12 is rotated by the movement of the chain 35, and the rotation guide 27 of the upper guide 11 is rotated.
Also rotates.

The lowering amount of the upper guide 11 is determined by the
About 1/3 of the excavation amount. On the other hand, when the excavator 5 is raised, the chain 35 tries to loosen, but the winch 16
The upper guide 11 rises along the reader 2 because the is always in a suspended state. Next, a method of assembling the support device such as a hose of the present invention to a pile driver will be described with reference to FIG.

First, as shown in FIG. 6 (a), the upper guide 11 and the lower guide 12 are connected by a connecting fitting 40, and a hose or the like laid over the upper guide 11 and the lower guide 12 is transferred to the reader 2 side. The hose and the like extended from the base machine 1 to the hanger 8 are connected to the hose and the like extended to the upper guide 11 and the lower guide 12 by a joint or the like. Next, the winch 16 is operated to suspend the wire 14 from the top sheave 15 and engage with the pulley 30 of the upper guide 11, and another winch is operated to move the wire 55 to the rotation guide of the upper guide 11. 27 and lift.

Next, as shown in FIG. 6B, the guide 24 of the upper guide 11 is engaged with and attached to the guide rail 2a of the reader 2, and the wires 14 and 55
Hoist. Then, as shown in FIG. 6C, when the lower guide 12 is lifted to a position where it is almost fixed to the reader 2, only the wire 14 is lifted, and the upper guide 1 is lifted.
The first guide roller 25 is engaged with the guide rail 2 a of the reader 2, and the lower guide 12 is engaged with the fixed position of the reader 2 and is fixed with the lock metal 33. Then, the connecting bracket 40
Is released, and only the upper guide 11 is lifted.

As described above, if the supporting device for hoses is assembled to the pile driving machine, the pile driving machine can be easily operated by itself without using another crane. In the above-described embodiment, the chain receives the pulling force when the digging tool excavates, but it may be a wire. In this case, the sprockets 29 and 34 use sheaves. Further, even when a chain is used, the sprockets 29 and 34 are not necessarily required, and may be discs. Further, if a hose or the like having a strength enough to withstand a tensile force is used, a chain or a wire may not be used.

As described above, the present invention is not limited to the above embodiment, and can be implemented in various modes without departing from the gist of the present invention.

[0028]

As described above, the apparatus for supporting hoses of a pile driver according to the present invention is provided at a position approximately at an intermediate height of the leader, a hanger for suspending the hoses from the base machine, and a guide for the leader. An upper guide slidably engaged with the rail and suspended from the winch, and a lower guide fixed to the lower portion of the leader and rotated with the movement of hoses, the upper guide is provided from the hanger. And a rotatable rotating guide that guides the hoses through the lower guide from the fixed guide to the excavator, without the need for a hose reel. ,
The drilling rig can be advanced into the ground to a depth of approximately three times the leader length.

Also, one end of the chain is locked to the upper guide, and the other end is locked to the excavating tool via the lower guide and the rotation guide portion of the upper guide. By providing a locked clamp and receiving the tensile force applied to the hoses with the chain as the drilling tool excavates, the upper guide can be always suspended,
It is not necessary to perform control such as lowering the excavator in synchronization with the excavation of the excavator.

Further, when the present apparatus is mounted on a pile driver, no crane is required, so that the assembling work at the work site is simplified.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration as an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state in which the hoses are bridged.

FIG. 3 is a front view and a side view showing details of an upper guide 11 and a lower guide 12;

FIG. 4 is a front view showing details of the clamp 28;

FIG. 5 is a side view showing a state in which the chain 35 is bridged.

FIG. 6 shows an upper guide 11 and a lower guide 12 of the present invention.
FIG. 6 is a state diagram of assembling the pile driving machine.

FIG. 7 is a side view showing a conventional hose supporting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base machine 2 ... Leader 2a ... Guide rail 3 ... Back stay 4 ... Keriva 5 ... Drilling tool 6 ... Cable 7 ... Hydraulic hose 8 ... Hanger 9 ... Pendant rope 11 ... Upper guide 12 ... Lower guide 13 ... Winch 14 ... Wire 15 top sheave 16 winch 17 wire 21 upper guide 22 connecting member 23 shaft 24 guide 25 guide roller 26 fixed guide 26a outer plate 26b guide rod 27 rotation guide 27a Outer plate 28 Clamp 29 Sprocket 31 Lower guide body 32 Shaft 33 Locking member 34 Sprocket 35 Chain 35a Chain link 37 End 40 Connection metal 41, 42 Plate 43, 44 Clamp material 45, 46: locking hole 47: bolt 50: cable Le 51 ... hose reel

Claims (3)

[Claims] An apparatus for supporting a hose of a pile driving machine for supporting a hose connected between a drilling tool and a base machine guided by a guide rail of a leader of an standing pile driving machine and digging into the ground. , A hanger provided at a substantially intermediate height position of the leader to suspend hoses from the base machine, an upper guide slidably engaged with a guide rail of the leader and suspended by a winch, A lower guide fixed to a lower portion and rotating with movement of the hoses, the upper guide being a fixed guide portion for suspending the hoses from the hanger; and a hose passing from the fixed guide portion to the lower guide. A supporting device for a hose of a pile driver, comprising: a rotatable rotation guide portion for guiding the rocks to the drilling tool. 2. An end of a chain is locked to the upper guide, and the other end is locked to a digging tool via a rotation guide portion of the lower guide and the upper guide. 2. A supporting device for hoses of a pile driving machine according to claim 1, wherein a clamp is provided for locking the hooks, and the chain receives tensile force applied to the hoses as the drilling tool advances. 3. The upper guide and the lower guide are connected, hung by a winch of a base machine, the upper guide is engaged with a guide rail of the reader, and further lifted to fix the lower guide to the reader, and thereafter the upper guide is fixed. A method of assembling a hose driving device for a pile driver, wherein the connection between the guide and the lower guide is released to raise the upper guide.