JPS617122A - Mud hoist for dredger - Google Patents

Abstract

PURPOSE:To make miniaturization and lightweightiness come to fruition, by constituting mud conveying part with a belt conveyor and a cover member being set up adjacently at the upper side, while forming a sand and earth conveying space capable of conveying these sand and earth as held between both. CONSTITUTION:A belt conveyor support ladder 21 is rockably supported on the hull 20 of a dredger via a ladder wire 27, and a bucket wheel 24 as a dredging part is set up at the tip end part. A belt conveyor 7 constituting a mud conveying part and a cover member 12 to be installed as adjoining with the upper side both are set up inside the ladder 27. The belt conveyor 7 is turned round in an (a) direction by a drive pulley 4. And, an upper belt 3 of the belt conveyor 7 is bent by dint of carrier rollers 5a-5c, and both these side end parts is made contact with the cover member 2 whereby a sand and earth conveying space 8 is made formable mutually between the cover member 2 and the upper belt 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for lifting earth and sand from a dredging section to a hull of a dredger.

[Conventional technology]

When transporting earth and sand from the dredging part to the hull of a dredger and lifting the earth, conventionally, a dredging pump sucks up the earth and sand and transports a water slurry, or a packet conveyor transports the earth.

[Problem that the invention seeks to solve]

However, dredgers that transport water slurry in front of stations need to be equipped with large dredging pumps with high horsepower, and dredgers that use packet conveyors in the latter case have large rudders to support the packet conveyor, and both Dredgers using soil lifting and transporting means also have problems in that the hull becomes large and a large amount of power is required.

The present invention aims to solve these problems, and by using a belt conveyor in the unloaded soil conveyance section of a dredger, the dredger can be made smaller and lighter, and the unloaded soil can be efficiently conveyed with less power. The purpose of the present invention is to provide a dredging device for dredging.

[Means for solving problems]

For this reason, the earth lifting device for a dredger of the present invention is equipped with a lifting earth conveying part that conveys earth and sand from the dredging part to the hull and lifting the soil, and the earth lifting apparatus is arranged adjacent to the belt conveyor and above the belt conveyor. A soil transport space is formed between the cover member N and the belt of the belt conveyor, and the earth and sand can be sandwiched and transported. There is.

[Effect]

In the above-described earth and sand lifting device for a dredger of the present invention, the earth and sand from the dredging section is held in the earth and sand conveying space formed between the belt conveyor and the cover member, and is lifted and conveyed onto the hull of the dredger. Ru.

〔Example〕

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
Figures 1 and 2 show an earth lifting device for a dredger as a first embodiment of the present invention. Figure 1 is a schematic vertical cross-sectional view thereof, and Figure 2 is a view taken in the direction of the ■-■ arrow in Figure 1. It is an enlarged sectional view, and the third and fourth
The figures show an earth lifting device for a dredger as a second embodiment of the present invention, FIG. 3 is a schematic side view showing a partially cutaway view, and FIG. 4 shows a partially cutaway side view. IV-IV in Figure 3
It is an enlarged sectional view in the direction of arrows, and FIGS. 5 and 6 show a dredger's earth lifting device as a third embodiment of the present invention. FIG. 5 is a schematic longitudinal sectional view thereof, and FIG. The fifth part is shown broken away.
FIG. 7 is an enlarged sectional view taken along the line Vl-Vl in the figure, and FIG. 7 is a side view of a dredger as an example equipped with the present device.

First, a description will be given of a dredger equipped with the device of the present invention.As shown in FIG.
A trunnion truck 22 to which the trunnion truck 2a is attached is mounted movably on a pair of rails 29 laid in the operator's direction of the hull 20 by a hydraulic cylinder 25.

Further, a belt conveyor support lug 21 has its base rotatably connected to a trunnion truck 22 via a trunnion 23, and the hull 2 is formed between a pair of rails 29.
It is arranged so that it can pass through a slit portion (not shown) of 0 and move along with the trunnion cart 22 in the direction of the operator's direction of the hull 20.

Furthermore, this belt conveyor support lug-21c, the hull 2
With the rudder gantry 26 installed at the bow of the 0,
It is supported via a rudder wire 27 and a lug-sheave 28, and a packet wheel 24 serving as a dredging unit for excavating the seabed is attached to its tip.

Note that the reference numeral 24a in FIG. 7 indicates a packet of the packet wheel 24.

Next, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. Inside the belt conveyor support lug 21 described above, a lifted soil conveying section is arranged adjacent to the belt conveyor 7 and the upper side thereof. It is composed of a cover member 2 that is

This belt conveyor 7 is driven by a drive pulley 4 in the direction indicated by arrow a in FIG.

The upper belt 3 of the belt conveyor 7 is bent by a plurality of sets of carrier rollers 5a, 5b, and Sc, and both ends thereof are in contact with the cover member 2, so that between the cover member 2 and the upper belt 3, packet wheel 2
An earth and sand transport space 8 is formed for transporting earth and sand 1 from 4 to the hull 20.

In addition, in FIG. 1, carrier rollers 5a, Sb, 5c
is omitted from illustration.

Since the first embodiment of the present invention is configured as described above, the earth and sand 1 dredged by the packet wheel 24 is
When the bucket) 24a reaches the upper position, the bucket
4a to the upper bell) 3h of the belt conveyor 7. Since the upper belt 3 is driven by the drive pulley 4 in the direction indicated by arrow a in FIG.
is quickly inserted into the earth and sand conveying space 8 formed between the upper belt 3 and the cover member 2.

In addition, the earth and sand transport space 8 is sealed from surrounding seawater because both ends of the belt 3 and the cover member 2 are in contact with each other and slide.

As described above, in the first embodiment of the present invention, the belt conveyor 7 can lift up and transport the earth and sand 1, so there is no need for a large horsepower dredging pump or a large rag to support a large packet conveyor. , the hull 20 can be made smaller and lighter.

In addition, since the earth and sand 1 in the earth and sand transport space 8 is sealed from the surrounding seawater, the earth and sand 1 are transported to the earth and sand transport space 8.
Transport efficiency can be increased without escaping.

Next, the second embodiment of the present invention will be explained. The second embodiment is configured almost the same as the first embodiment, but the third and fourth embodiments are similar to the first embodiment.
As shown in the figure, inside the belt conveyor support ladder 21 shown in FIG. 7, the upper belt 3 of the belt conveyor 7 is supported while being kept flat by a plurality of carrier rollers 5. At both ends of the upper belt 3, continuous side plates 9 are erected along the circumference of the upper belt 3 with their upper ends in contact with the cover member 2. An earth and sand transport space 8 is formed.

Further, a large number of fins 6 extending perpendicularly to the longitudinal direction of the upper belt 3 are provided in a protruding manner so as to be sandwiched between the side plates 12 to define an earth and sand conveyance space 8 .

Note that the carrier roller 5 is not shown in FIG. 3.

Since the second embodiment of the present invention is configured as described above, it has almost the same functions and effects as the first embodiment, and in addition, the fins 6 can absorb soil caused by water remaining in the soil transport space 8. sand 1
In order to prevent the backflow of the earth and sand 1, the earth and sand 1 are lifted and conveyed onto the hull 20 without slipping between the belts 3 and the belt 3.

Therefore, in the second embodiment of the present invention, the fins 6
Sediment 1 does not allow backflow of water conveyed with earth and sand 1
Since the backflow of the soil is prevented, the volumetric efficiency of the earth and sand 1 in the earth and sand transport space 8 is increased, and the soil transport section of the hull 20 can be made smaller and lighter, and the soil transport section is not steeply sloped. However, the earth and sand 1 is reliably lifted and conveyed onto the hull 20. Furthermore, the earth and sand 1 does not flow backward at the entrance of the earth and sand transport space 8 near the dredging part, and the earth and sand 1 are smoothly received and transferred from the packet wheel 24.

Next, the third embodiment of the present invention will be explained. The third embodiment is configured almost the same as the first and second embodiments, but the fifth embodiment is similar to the first and second embodiments.
, 6, inside the belt conveyor support ladder 21 shown in FIG. An earth and sand conveyance space 8 is formed such that the portion is in contact with the cover member 2.

Further, the upper belt 3 has a plurality of pairs of triangular fins 6', 6' extending perpendicularly to the longitudinal direction of the belt 3, and these pairs of fins 6', 6' When the earth and sand conveyance space 8 of No. 3 is formed, it is arranged so as to come into contact with the earth and sand conveyance space 8 to partition the earth and sand conveyance space 8.

Note that the carrier roller 5' is not shown in FIG. 5.

Since the third embodiment of the present invention is constructed as described above, substantially the same operation and effect as the second embodiment can be obtained.

〔Effect of the invention〕

As described in detail above, the dredger's soil lifting device of the present invention is provided with a lifted soil transport section that transports earth and sand from the dredging section to the hull and lifts the soil, and the lifted soil transport section is connected to the belt conveyor and the same belt. and a cover member disposed adjacent to the upper side of the conveyor, and an earth and sand conveying space is formed between the cover member and the belt of the belt conveyor, in which the earth and sand can be held and conveyed. With this extremely simple configuration, the soil can be transported using a belt conveyor, making it possible to make the dredger smaller and lighter, and to transport the soil with less power.

In addition, the sealing properties between the earth and the surrounding seawater are good, and the earth and sand do not escape from the earth and sand transport space formed between the upper belt and the cover member, making it possible to carry out extremely efficient soil lifting and transport. It also has the advantage of preventing sediment from scattering into the surrounding seawater, contributing to the prevention of marine pollution.

[Brief explanation of the drawing]

Figures 1 and 2 show an earth lifting device for a dredger as a first embodiment of the present invention. Figure 1 is a schematic vertical cross-sectional view thereof, and Figure 2 is a view taken in the direction of the ■-■ arrow in Figure 1. It is an enlarged sectional view, and the third and fourth
The figures show an earth lifting device for a dredger as a second embodiment of the present invention, FIG. 3 is a schematic side view showing a partially cutaway view, and FIG. 4 shows a partially cutaway side view. FIG. 3 is an enlarged sectional view taken along the line IV-n in FIG. 6 is an enlarged sectional view taken along the line VI-Vl in FIG. 5, partially cut away, and FIG. 7 is a side view of a dredger as an example equipped with the present device. 1. Earth and sand, 2. Cover member as a lifting soil transport section, 3.
・・Upper belt as lifting soil conveyance unit, 4・・Drive pulley, 5.5′ +5a+5b+5c′ H carrier roller, 6.6′・・Fin, 7・・Belt conveyor, 8
・・Sediment transport space, 9.・Side plate, 20.・Hull,
21... Belt conveyor support ladder, 22... Trunnion cart, 22a... Wheels, 23... Trunnion, 24...
・Bucket wheel, 24a...Baken), 25...
Hydraulic cylinder, 26...Ladder gantry, 27...U□
Dah wire, 28... Rudder sheave, 29... Rail. Sub-Agent Patent Attorney Yoshi Iinuma 4 Figure 1 Figure 3

Claims (1)

[Claims] It is provided with an unloaded soil transport section that transports earth and sand from the dredging section to the ship's hull and lifts the soil, and the unloaded soil transport section is composed of a belt conveyor and a cover member disposed adjacent to the upper side of the belt conveyor, An earth lifting device for a dredger, characterized in that an earth and sand conveying space is formed between the cover member and the belt of the belt conveyor, in which the earth and sand can be held and conveyed.