JP2668338B2 - Water jet hose winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for winding a water jet hose for jetting jet water when a pile is pressed.

[0002]

2. Description of the Related Art When a pile is pressed into a hard ground or the like, a method of jetting jet water to the ground is used. The jet water has a jet nozzle attached to the tip of a water jet hose, and the jet nozzle is fixed to a pile. In this state, the jet nozzle is injected from the jet nozzle together with press-fitting of the pile. This pile is press-fitted by a pile press-in / pull-out machine, but it is necessary to collect the water jet hose at the end of press-fitting of this pile. Therefore, conventionally, as described in Japanese Utility Model Laid-Open No. 64-53239, a drum-shaped winding device is attached to a pile press-in / pull-out device, and the winding device is rotationally driven to wind a water jet hose. ing. FIG. 5 shows this conventional winding device 100, which is in the form of a drum as a whole and which is rotated by driving a rotary power source (not shown) such as a hydraulic motor to wind up a water jet hose 110. This winding is performed by winding a plurality of times according to the length of the water jet hose 110.

[0003]

A large rotational torque is required for winding the water jet hose. The jet nozzle at the tip of the water jet hose is fixed to the pile by welding, hooks, etc. It is necessary to overcome this fixing force and pull up the jet nozzle and water jet hose, and the water jet hose is long and heavy This is because. However, in order to obtain a large rotating torque, it is necessary to increase the drum diameter of the winding mounting itself or to increase the output of the rotating power source. For this reason, conventionally, the overall height of the winding device has been increased, not only hindering other mechanisms of the pile press-in / pull-out machine, but also the power transmission system has a complicated structure. Further, in the conventional winding device, since the entire drum shape rotates, the swivel joint 1 is inserted at the insertion portion where the water jet hose 110 is inserted.
It was necessary to arrange 20 to prevent the hose 110 from twisting. This made the structure complicated. The present invention has been made in consideration of the above circumstances, and a water jet hose having a structure in which a large winding force can be applied with a simple mechanism without increasing the overall height and a swivel joint is unnecessary. It aims at providing the winding device of this.

[0004]

According to the present invention, there is provided a water jet fixed to a pile to be cast.
A plurality of sheave hose nozzle is hung so as to be winding and drawers, rotatably supporting the sheave, horizontal
A shaft press-in / pull-out machine, which comprises a plurality of parallel shafts spaced apart in a direction, and a stretching member attached between the shafts and extending and contracting the distance between the shafts to control a winding force. It is attached to the.

[0005]

In the above construction, the water jet hose is helically wrapped around the plurality of sheaves, and the shaft body moves so as to be separated by extending the expandable member. The sheave is attached to this shaft body, and the water jet hose is wound up by the separating operation of the shaft body accompanying the extension of the elastic member. When winding this hose, the elastic member
Control the take-up force with the water jet nozzle
The sheave can be disengaged from the pile, and the sheave can act as a moving pulley to perform high-speed winding of the hose . In such a structure, since a drum shape is not used, the overall height can be reduced, and a swivel joint is not required.

[0006]

1 to 3 show an embodiment of the present invention.
As illustrated in FIG. 1, the winding device 1 includes a pair of left and right shafts 2 and 3 and a plurality of sheaves 4 and 5 attached to the shafts 2 and 3. Reference numeral 6 is an expansion / contraction member made up of a hydraulic cylinder or the like, and the shafts 2 and 3 described above are attached to both ends in the expansion / contraction direction so as to intersect at right angles. The shafts 2 and 3 penetrate the sheaves 4 and 5 to rotatably support the sheaves 4 and 5 respectively. A plurality of sheaves 4 and 5 are attached to each of the shafts 2 and 3 (three in the illustrated example). The sheaves 4, 5 are provided with a water jet hose 7, and recesses 4a, 5a into which the water jet hose 7 is fitted are formed on the outer peripheral portion of the sheaves 4, 5. The sheaves 4 and 5 on the shafts 2 and 3 face each other,
A water jet hose 7 is stretched over the facing sheaves 4, 5. Thereby, the water jet hose 7 is spirally wound around all the sheaves 4 and 5.

FIG. 3 shows a mounting structure of the sheave 5 on one shaft body 3, and is similarly applied to the sheave 4 on the other shaft body 2. The shaft body 3 supports the sheave 5 by penetrating the sheave 5. A bearing member 8 such as a bearing or a bush is provided in a portion of the sheave 5 that penetrates the shaft body 3, so that the sheave 5 can rotate with respect to the shaft body 3. This rotation follows the expansion and contraction of the elastic member 6. As shown in FIG. 2, a jet nozzle 9 for jetting jet water is attached to the tip of the water jet hose 7. Also,
Although illustration is omitted, the base end bent portion of the water jet hose is fixed by being connected to an appropriate sheave 4 or 5, or an external member.

FIG. 4 shows an operating state in which the winding device 1 of this embodiment is mounted on a pile press-in / pull-out machine 10. The pile press-in / pull-out machine 10 secures a reaction force at the time of press-fitting a new pile Pn by the plurality of clamps 12 hanging down from the saddle 11 sandwiching the pile P. A slide base 13 slidably movable in the pile row direction is mounted on the saddle 11, and a mast ( not shown) is erected on the slide base 13. A guide rail ( not shown) is provided on a front portion of the mast, and the elevating body 16 moves up and down along the guide rail. A chuck 17 for holding a new pile Pn is attached to the elevating body 16 so as to move up and down integrally with the elevating body 16. Is pulled out .

The winding device 1 is mounted on a slide base 13 for such a pile press-in / draw-out machine 10.
The winding device 1 is fixed on the slide base 13 via an appropriate fixing means (not shown).
The water jet hose 7 is pulled out from and extends along the new pile Pn. A jet nozzle 9 is attached to the tip of the water jet hose 7, and the jet nozzle 9 is fixed to the pile Pn by an appropriate fixing means 19 such as welding or a hook pin. In the above configuration, at the time of press-fitting the pile Pn, the elastic member 6 is shortened in accordance with the press-fitting speed of the pile Pn. As a result, the pile Pn
, The water jet hose 7 is gradually pulled out, jet water is jetted from the jet nozzle 9 at the tip end, and the press-fitting of the pile Pn is performed smoothly.

After the press-fitting of the pile Pn, the winding device 1 winds the water jet hose 7. This winding is performed by extending the elastic member 6. The extension of the elastic member 6 causes the pair of shafts 2 to move in the direction away from the shaft 3. The sheaves 4, 5 rotate following the movement of the shafts 2, 3, so that the water jet nozzle 7 is wound up. In the illustrated example, this operation is performed by moving the sheave 4 on the shaft body 2 away from the sheave 5 on the shaft body 3, so that the sheave 4 acts in the same manner as a moving pulley. Therefore, when the number of sheaves 4 or 5 is n and the stroke of the elastic member 6 is D, the winding length L of the water jet hose 7 is L = 2Dn, and long winding can be performed with a small amount of expansion and contraction. it can. Also, since the sheave 4 acts as a moving pulley, it operates as a speed increasing mechanism.
And the winding force is controlled by the expansion and contraction of the elastic member 6.
Can be Therefore, it is possible to easily overcome the fastening force of the jet nozzle 9 by the fastening means 19, and the water jet hose 8 can be reliably wound up. From the above, in the present embodiment, the total height of the winding device 1 can be lowered, and it does not interfere with the operation of other members of the pile press-fitting / pulling machine 10. Also, a swivel joint is not required. The present invention can be variously modified without being limited to the above embodiments. For example, the sheave 4 may be fixed and the sheave 5 may be moved to wind up the water jet hose 7. Further, the number of the sheaves 4 and 5 can be appropriately increased or decreased.

[0011]

According to the present invention, since the water jet hose is wound by moving the sheave apart by extending the elastic member, a long winding can be performed with a small amount of extension and the winding force can be controlled. it can. Therefore the structure is simple, overall height low and also unnecessary complicated swivel joints, and Waugh from pile after casting of the pile
Take off the target jet nozzle and wind the hose at high speed.
Can be .

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of the present invention.

FIG. 2 is a side view of one embodiment.

FIG. 3 is a sectional view showing attachment of a sheave to a shaft body.

FIG. 4 is a side view showing mounting on a pile press-in / pull-out machine.

FIG. 5 is a sectional view of a conventional winding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Winding device 2, 3 Shaft body 4, 5 Sheave 6 Elastic member 7 Water jet hose 10 Pile press-in and pull-out

Claims (1)

(57) [Claims] 1. A water jet fixed to a pile to be driven.
A plurality of sheaves around which the hose of the nozzle is wound and can be pulled out, and rotatably supporting the sheaves,
It is installed between parallel shafts that are separated in the horizontal direction and between these shafts, and the winding force is controlled by expanding and contracting the distance between the shafts.
That it consists of a telescopic member, the whole winding device of the water jet hose, characterized in that mounted on the pile press-drawing machine.