JP3055841B2 - Casing press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing press-fitting machine for constructing a shaft or foundation using a casing.

[0002]

2. Description of the Related Art Earth augers and various other devices have been conventionally used for constructing shafts and foundations, and the applicant of the present invention has particularly excellent workability and can easily perform work by one worker. A casing press-fitting machine is disclosed in
No. 19, JP-A-4-5314 and the like.

[0003] The basic structure of this device is that a bogie is attached to a bogie so as to be pivotable, an excavator is suspended from the tip of the boom by a wire or the like, and a rocking press fit for rocking a casing tube into a front portion of the bogie. It has a mechanism.

At the time of construction, the casing tube is clamped by the swing band of the swing press-fitting mechanism, and the casing tube is swung by operating the press-in pull-out cylinder and the swing cylinder for applying a downward pressing force to the casing tube. Press into the ground. As a result, work efficiency can be improved that is not available in various conventional methods.

[0005]

However, the casing press-fitting machine described in the above publication has one end of a press-fitting / pulling-out cylinder directly attached to a swing band, and operates the press-fitting / pulling-out cylinder while swinging the swinging band. At this time, the cutting edge of the casing is slightly moved up and down simultaneously with the rotational movement. For this reason, efficient press-fitting is difficult, the entire apparatus also moves up and down, and the installation pressure of the outriggers and the like also changes, causing the entire apparatus to move. In addition, since the press-fitting / pulling-out cylinder swings in accordance with the swing of the casing tube, it causes loosening of parts and contact with workers and parts.

An object of the present invention is to solve the above-mentioned problems in a casing press-fitting machine, and to improve a conventional casing press-fitting machine to further improve workability.

[0007]

In order to achieve the above object, a casing press-fitting machine according to the present invention provides a casing press-fitting machine provided with a swing press-fitting mechanism for clamping and swing-pressing a casing tube into the ground in a base machine. A rocking band for clamping the casing tube, a rocking cylinder for rocking the rocking band, and a rocking band casing for slidably holding the rocking band. A support guide for holding the base end of the swing band casing so as to be able to move up and down, wherein the support guide is provided with a press-fitting extraction cylinder for vertically moving the swing band casing.

[0008]

In the casing press-fitting machine according to the present invention, the press-fitting / pulling-out cylinder is not directly attached to the swing band, but a press input is applied to the casing tube via the outer casing which slidably holds the swing band. ing. For this reason, the pressing force of the press-fitting / pulling-out cylinder can be efficiently input as a pressure without being influenced by the swinging of the swinging band.

[0009]

FIG. 1 is a side view of a casing press-fitting machine according to the present invention.
FIG. 2 is a plan view partially showing the casing press-fitting machine shown in FIG.

Reference numeral 1 denotes a movable base machine, and an arm 2
A clamshell-type excavator 3 is hung at the tip of the base machine 1, and a swing press-fitting mechanism 4 for swing-press-fitting the casing tube T into the ground is provided on the front surface of the base machine 1. Reference numeral 5 denotes an outrigger, and reference numeral 6 denotes an up / down cylinder for tilting the swing press-fitting device.

The swing press-fitting mechanism 4 is shown in FIG.
As shown in the vertical sectional view of FIG. 5, a swing band 7 having a U-shaped cross section for clamping a casing tube T, and a swing band casing also having a U-shaped cross section for slidably holding the swing band 7 from the outer periphery. 8, a pair of oscillating cylinders 9 for oscillating the oscillating band 7, and a support guide 10 for supporting the base end of the oscillating band casing 8 movably up and down.

As shown in FIG. 3, the oscillating band 7 is composed of four divided rings 7a, 7b, 7c and 7d, and these divided rings 7a to 7d are pin-connected at three places, and Are connected to be able to expand and contract by a clamping cylinder 11 for clamping. The split rings 7a and 7c are further provided with connecting protrusions 7e projecting from connecting protrusion through windows 8a formed on both sides of the swing band casing 8, and the swing cylinder 9 is connected to the connecting protrusions 7e. The swing band 7 can be moved in the radial direction and the circumferential direction while being held by the swing band casing 8, and the swing band 7 can be moved while the swing band casing 8 is fixed.
Can be swung.

Reference numeral 12 denotes a bracket fixed to the base end of the swing band casing 8. Further, a distal end of the bracket 12 is disposed in a hollow support guide 10 as shown in a sectional view of FIG. The cylinder guide 13 is fixed.

A press-in / draw-out cylinder 14 having one end attached to the support guide 10 and the other end attached to the cylinder guide 13 is provided inside the support guide 10.

The operation using the casing press-fitting machine includes the outrigger 5 and the swing press-fitting device 6 according to the inclination of the construction position.
To adjust the front-back and left-right inclination. Next, the casing tube T is mounted on the swing band of the swing press-fitting device 4, and the fastening cylinder 11 is fastened and clamped.

In this state, the press-in / pull-out cylinder 14 is operated to apply a downward pressing force to the casing tube T while giving the reciprocating swinging motion to the casing tube T by the swing cylinder 9. These press-fit pull-out cylinders 14
The casing tube T is press-fitted into the ground by the pressure input by the pressure and the rocking power of the rocking cylinder 9.

At the same time, the excavator 3 is lowered to be fed into the casing tube T to excavate the inside. This press-fitting and excavation are repeated to complete the work. After the construction of the shaft, etc., the casing is pulled out by the swinging cylinder 9 and the press-in / draw-out cylinder 14.

As described above, in the casing press-fitting machine according to the present embodiment, the pressing band is pressed by the press-fitting / pulling-out cylinder 14 while the swing band 7 is held by the swinging band casing 8. Rocking band 7
Does not move even if it swings, all the pressing force can be directed downward, and efficient press-fitting becomes possible. In addition, since the swing band 7 swings while being guided by the swing band casing 8 in a fixed state, stable swing without wobble becomes possible.

FIG. 6 shows another embodiment of the casing press-fitting machine, in which a well-known forklift is used as the base machine 20. With such a structure, the casing press-fitting machine can be made compact, and construction can be performed particularly on narrow roads. In addition, what corresponds to the previous embodiment is:
The same numbers are assigned and the description is omitted.

FIG. 7 shows still another embodiment of the casing press-fitting machine, in which a tire traveling truck crane is used as the base machine 25. Reference numeral 26 denotes a crane boom for suspending the excavator 3.

This embodiment makes it possible, in particular, to use a conventional type of excavator in which a winch is suspended by a wire.

[0022]

According to the present invention, the following effects can be obtained.

(1) Since the pressing force is applied by the press-in / draw-out cylinder while the swing band is held in the swing band casing, all the pressing forces can be directed downward, and efficient press-fitting is possible. Becomes

(2) Since the swing band swings while being guided by the fixed swing band casing, stable swing without wobble is possible.

(3) Since the swing is performed in the swing band casing, the swing is performed horizontally.

(4) Since it is a cantilever type, the upper part of the swing band can be widely used, and the casing can be easily suspended.

[Brief description of the drawings]

FIG. 1 is a side view of a casing press-fitting machine according to one embodiment of the present invention.

FIG. 2 is a plan view partially showing the casing press-fitting machine shown in FIG. 1;

FIG. 3 is a cross-sectional view of the swing press-fitting mechanism of the casing press-fitting machine shown in FIG.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a longitudinal sectional view of a support guide.

FIG. 6 shows another embodiment of the casing press-fitting machine, and (a)
Is a side view, and (b) is a plan view partially omitted.

FIG. 7 shows another embodiment of the casing press-fitting machine, and (a)
Is a side view, and (b) is a plan view partially omitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base machine 2 Arm 3 Excavator 4 Oscillating press-fitting mechanism 5 Outrigger 6 Undulating cylinder 7 Oscillating band 7a, 7b, 7c, 7d Split ring 7e Connecting projection 8 Oscillating band casing 9 Oscillating cylinder 10 Supporting guide 11 Tightening cylinder 12 Bracket 13 Cylinder guide 14 Press-in / draw-out cylinder T Casing tube

Claims (1)

(57) [Claims] 1. A casing press-fitting machine provided with a swing press-fitting mechanism for clamping and press-fitting a casing tube into the ground in a base machine, wherein the swing press-fitting mechanism includes a swing band for clamping the casing tube. A swing cylinder for swinging the swing band, a swing band casing for slidably holding the swing band, and a support guide for holding a base end of the swing band casing to be vertically movable. Wherein the support guide includes a press-fitting extraction cylinder for vertically moving the swing band casing.