Excavator for a ditch and excavating method therefor

Details Excavator for a ditch and excavating method therefor Excavator for a ditch and excavating method therefor

2001-06-07

2003-03-25

Batson, Victor (Department: 3671)

Excavating

Ditcher

Having endless digger

C037S906000, C037S462000

Reexamination Certificate

active

06536142

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an excavator for excavating a ditch under the ground and a method for excavating a ditch.
2. Description of the Related Art
There are works for excavating a ditch under the ground in basic civil engineering work. And, there was a problem regarding a flatness of ditch wall of ditch as excavating the ditch.
An example to object an improvement of the flatness is disclosed in Japanese Patent Application Laid-Open No. hei 11-93202. Hereinafter, the conventional excavator is explained by the case of excavating the underground ditch vertical to the ground, referring to
FIG. 5
showing a front view of the excavator,
FIG. 6
a
showing a status connecting a underground clinometer to a connection rod,
FIG. 6
b
showing a cross-sectional plan view of a cutter post included in a ditch excavating body,
FIG. 7
showing a block diagram of the clinometers and data processing means respectively, and
FIG. 8
showing an example of a display screen.
An excavator
1
comprises an excavating device main body
2
consisting of a traveling body
2
a
and a revolving body
2
b
disposed on the traveling body
2
a
. The revolving body
2
b
is equipped with a gate-shaped frame
3
. The frame
3
is supported with a leader
4
being slide in the approximately horizontal direction by a slide cylinder
4
a
. The leader
4
is installed to a rotation-driving device
7
ascended and descended by an oil pressure cylinder, and the driving device
7
is installed to a driving sprocket
6
b
driving in clockwise and counterclockwise.
A housing bottom end of said device
7
is connected with a cutter post
6
a
having a plurality of elements, and in the bottom end, a driven sprocket
6
c
is installed. Also, an excavating body
6
is formed with an endless-typed excavating chain
6
d
installed between said driving and driven sprockets. The excavating chain
6
d
equipped with an excavating blade or an excavating edge
6
e
is driven together with the driving and the driven sprockets, then, the excavating body
6
is moved to the transverse direction in the underground to excavate a ditch
100
.
Underground clinometers
11
-
14
are disposed on said cutter post
6
a
, a ground clinometer
15
is disposed on the traveling body
2
a
. The underground clinometers, as shown in
FIG. 6
a
, consist a clinometers assembly connecting up and down through a connecting rod
16
, a length scale of each connecting rod
16
becomes a spaced scale between the underground clinometers. An electric wire
17
connecting them electrically is wired along said connecting rod
16
.
On the other hand, as shown in
FIG. 6
b
, the cutter post
6
a
is formed with not only a supply hole
18
of air, etc., extended to the up and down directions (the depth direction in
FIG. 6
b
), but also a clinometer insert hole
19
, parallel to the supply hole, and in the inset hole
19
, the clinometers assembly is inserted, as shown in
FIG. 6
a.
A data processing means
40
as shown in
FIG. 7
is disposed on an operating chamber
2
c
of said revolving body
2
b
. The data processing means
40
consists of a data logger
41
and a personal computer
42
(hereinafter referred to as PC). Said data logger
41
is connected with the underground and the ground clinometers
11
-
15
through the electric wire
17
, and inputs an output analogue signal of the clinometers respectively. Said PC
42
calculates an inclination or a bent status of the cutter post
6
a
from a data recorded in the data logger
41
to display it on a monitor screen every moment.
A display screen of said PC
42
is explained referring to FIG.
8
. The display screen is displayed with a depth factor numerical value
51
, a bent curve
52
of the cutter post
6
a
, inclination angles
53
A,
53
B of inner surface direction and outer surface direction in predetermined depth, and bent amounts
54
A,
54
B and so on of the cutter post
6
a
to the inner surface direction and outer surface direction. With this, the current inclination status or bent status of the cutter post
6
a
can be known.
However, said conventional excavator can measure an inclination or a displacement of ditch wall only in a hole unit rather than the whole ditch wall. And it does not have a function to process an inclination data of the whole ditch wall in real time.
In order to excavate a ditch having high precision ditch wall with more excellent verticality under the ground, it is necessary to obtain not only the inclination of ditch wall in the present position of excavating body but also the whole shape of the ditch wall (history of inclination). However, in the conventional excavator, it is difficult to excavate the ditch with the ditch wall of high precision because it cannot comprehend the whole shape of ditch wall.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide an excavator for a ditch and an excavating method capable of excavating the ditch having the ditch wall of high precision with more excellent flatness by comprehending the whole shape of the ditch wall.
The excavator of the invention comprises as follows:
an excavating body having an excavating element and a clinometer for detecting an inclination angle of ditch wall of excavated ditch;
a traveling distance recorder for measuring a moving distance of the excavator;
a calculator for calculating and accumulating an inclination signal of every moving distance of said excavator on the basis of the inclination signal outputted from said clinometer and a moving distance signal outputted from said traveling distance recorder; and
a display device for displaying said inclination signal accumulated outputted from said calculator.
In this case, an operator can operate the excavator recognizing the whole shape of ditch wall shape changed every moment by a monitor because accumulated inclination signal, for example, is displayed as a ditch wall shape on the monitor. Accordingly, it is possible to excavate the ditch with high precision flatness of the ditch wall.


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patent: 5247743 (1993-09-01), Holloway et al.
patent: 5249379 (1993-10-01), Baker et al.
patent: 5559725 (1996-09-01), Nielson et al.
patent: 5572809 (1996-11-01), Steenwyk et al.
patent: 6085445 (2000-07-01), Kanzler
patent: 6336077 (2002-01-01), Boucher
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patent: 6381882 (2002-05-01), Mizutani et al.
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patent: 56-105030 (1981-08-01), None
patent: 10-317870 (1998-12-01), None
patent: 11-93202 (1999-04-01), None
Patent Abstracts of Japan, JP 2001-003383, Jan. 9, 2001.
Patent Abstracts of Japan, JP 07-048838, Feb. 21, 1995.
Patent Abstracts of Japan, JP 06-108456, Apr. 19, 1994.
Patent Abstracts of Japan, JP 11-200403, Jul. 27, 1999.
U.S. patent application Ser. No. 09/468,909, Docket No. 0023-1748-3X, filed Dec. 22, 1999, Status Allowed.
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