JPS5955926A - Dredging mechanism and dredger - Google Patents

Abstract

PURPOSE:To perform effectively dredging work according to the condition of the deposits as well as to prevent the muddling of water by a method in which a screw drill provided in a cylinder is turned and the cylinder is also turned by a driver. CONSTITUTION:When a screw drill 1 is turned at an angular speed omegaA in the direction of A and a outer cylinder 2 is turned at an angular speed omegaB in the directin of B, the relative angular speed omegaE of the screw drill 1 and the outer cylinder 2 becomes omegaA-omegaD=omegaE (where omegaD is angular speed of deposits), and the speed VE of deposits 9 moving along the slope of the blade of the drill 1 becomes VE=K1.omegaE (where K1 is proportional constant). Since the rotation number NE of the deposits 9 in the outer cylinder 9 can be represented as NE= K2/VE (where K2 is proportional constant), if angular speeds omegaA and omegaB are chosen in proper values, centrifugal separation time according to the conditions of deposits 9 can be determined and the moisture content of the deposits 9 taken out of the discharge port 6 can also be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for dredging underwater deposits such as earth and sand and sludge.

In dredging using a conventional earth auger drill, as shown in Figure 6, when the screw drill (1) is rotated in the direction of the arrow (A) by the screw drive device (5), the deposits (9) are removed. It rises while rotating in the direction of arrow (A) along the inner wall of the outer cylinder (2), and is taken out from the discharge port (6) and placed in the container UO+, but the deposits (9) become sludge. In the case of deposits with small particles, such as those in the field, the moisture content is high, significantly reducing dredging efficiency.

Furthermore, if the sediment is relatively large, such as gravel, the rotational speed of the screw drill is limited, so the extraction efficiency is poor, and if the rotational speed is increased unnecessarily, the water becomes heavily polluted.゜Therefore, the purpose of the present invention is to
The purpose of the present invention is to provide a dredging device that is extremely efficient depending on the condition and properties of deposits and that significantly reduces water pollution.

Hereinafter, details of embodiments of the present invention will be explained with reference to the drawings.

In Fig. 4, (1) is a screw drill, (2) is an outer cylinder, (3) is an outer cylinder drive device, (4) is an outer cylinder rotation transmission device, (5) is a screw drill drive device, and (6) is an outer cylinder drive device. is the outlet, (7) is the mounting base, (8) is the water surface, (9) is the sediment,
0 old container, (III is cylindrical cover, 112 is shatterproof cuckoo, u3 is guide leader, (1ω is winch,
The mark is a wire lobe (I61 is a pulley).

When the drill drill (1) is simultaneously rotated in the direction of arrow A at an angular velocity ωA and the outer cylinder (2) is simultaneously rotated in the direction of arrow B at an angular velocity ωB, the inner wall of the outer cylinder (2) is pressed by centrifugal force. san
The deposit (9) moves in the direction of arrow A (arrow B) at an angular velocity ωD.
direction), but there is a relationship between the angular velocity ω and the angular velocity (I)B, which is ωA≧ω1≧ω9.
Since the relative angular velocity of 2) can be expressed as ωA−ωD=ωZ, the deposit (9) is
) 1] Does it float along the slope of the roots? 11 degrees 1 ma, K
, iJ: As an example, it can be expressed as v, = i <, ω8.

Here, if outside [°11 (2) without full rotation) time 0] 1 E i: t41 is shifted from ■A, then KO will be proportionally saved, V, -K. ω.

Since it can be expressed as, ■A>Tanaru Seki 1 system is R), then Gaisho (2) is indicated by arrow (A).
ノ511'il + this time 1 (if you let it be 1.1lIi
Product (9) θ) In the foreign quotient (2), θ〕11111p,,mo〢(Nε is defined as 2, and t can be expressed as N, = K2 / VP.Kakuren 1?ゝ^-6) B is J4 correct I+i
The centrifugation time can be determined according to the condition of the sediment (so), and the discharge port (6)
The total moisture content of the sediment (9) to be taken out will be lowered.

In the conventional earth auger, the moisture content was 80% or more, but in the embodiment according to the present invention, the moisture content was 50% or more.
From X to F and 7.

Furthermore, the outer cylinder (2) is moved at an angular velocity ωC in the direction of the arrow (C).
When rotated at , the angular velocity of the screw drill (1) is ω
Since A, the relative velocity ωF can be expressed as ω6+(υC−ωF), but since the direction of the tangential force acting on the deposit (9) in the outer cylinder (2) changes by 1'80 degrees, the centrifugal force However, if the rising speed VF is a proportionality constant of 3, there is a relationship as follows: V, = K2O2 7, and depending on the state of the deposit (9), the angular velocity ω8・ω8 becomes appropriate. If the angular velocity is set to ωF, the digging efficiency will increase.

Traditionally, screw drills (
1) If you increase the transmission, the screw drill (1)
) is scattered by the water flow, so increasing the rotation speed above a certain level has little effect.

In the embodiment of the present invention, since the rotation speed of the screw drill (1) can be appropriately determined and the rotation speed of the outer cylinder (2) can be arbitrarily selected, the scattering of the sediment (9) into the water can be increased. When the sediment (9) is gravel or the like, it can be excavated very efficiently [7].

Furthermore, as shown in Fig. 2, a screw drill (1) is attached to the cylindrical cover fixed to the J stand (7).
When the dredging mechanism consisting of the outer cylinder (2) is installed internally, the rotation of the outer cylinder (2) eliminates the scattering of deposits (9) into the water, making it possible to extremely reduce water pollution without reducing dredging efficiency. .

Also, as shown in Figure 6 I, installing the scattering prevention cover flZ on the side of the cylindrical cover UL+ can limit the scattering range of the deposit (9) by the screw drill (1). Water pollution will be further reduced.

In the dredging apparatus according to the present invention as explained above, as shown in FIG.
fl(t), wire rope 05 via pulley (1υ) connects the winch (1 core and handle (= 1 unit (7) Yf: When the winch circle is rotated, the mounting base (7) moves up and down. From the dredging le old a fi'L inserted into the deposit (9)
You can adjust the dredging depth, so you can adjust the dredging depth.
can be limited.

Furthermore, as shown in FIG.
Imperial cover (124.7+ dredging from 11I to F side)
When 'j is made to protrude, the rotation of the outer cylinder (2) will agitate the material (9) and cause an avalanche phenomenon in the deposit (9), so keep it in a fixed position! , - It is possible to expand the dredging range.

However, in this case, the water pollution will increase significantly, but if the actual persimmon is J, then as shown in Fig. However, the dredged Clo hair 111? If you make it protrude from the circle 1;
Y', the dredging device will need to be moved less frequently when dredging a wide area.

As explained above, according to the present invention, extremely efficient dredging work can be carried out practically and easily, and there is little environmental pollution.

[Brief explanation of drawings]

Figure 1 is a partial cutaway of the present invention.
Fig. 2 is a side view of the dredging device of the present invention with a cylindrical cover added by 1 inch, Fig. 6 is a side view with a shatterproof cover added, and Figs. 4 and 5 are the dredging device of the present invention. Fig. 6 is a side view of the present invention in which a lifting device is added to the dredging device, and Fig. 6 is a partially sectional side view of the conventional dredging device. 1 is a screw drill, 2 is an outer cylinder, 10 is a container, 11 is a cylindrical cover, 12 is a scattering prevention cover, 1'5 is a guide leader, and 14 is a winch. Patent Applicant: Daio Construction Co., Ltd. Representative Director Takeki Nakatani Figure 1 Figure 2

Claims (1)

[Claims] 1. A rotatable cylindrical body, a rotatable screw drill installed in the cylindrical body, a drive device for rotating the cylindrical body, and a rotatable screw drill for rotating the screw drill. A dredging mechanism characterized by being equipped with a driving device and a spool. 2. A dredging mechanism consisting of a rotatable screw drill installed inside a rotatable cylindrical body is approximately concentric with the cylindrical body fixed to the mounting base and has approximately the same length. A dredging device 3 for carrying out the invention according to claim 1, characterized in that it is loosely fitted into a cylinder cover, and the inside of the cylinder is rotatable. A dredging device in which a dredging mechanism including a screw drill is loosely fitted into a substantially concentric curved cover having approximately the same length as the cylindrical body fixed to a mounting base, the dredging mechanism , the cylindrical cover independently moves up and down = r
Claim 2, characterized in that the dredging mechanism is provided with a guide leader installed upright, a drive device that raises and lowers the dredging mechanism, and a drive device that raises and lowers the nuclear guide cover.
A dredging device for carrying out the invention described in paragraph 1.