CN106120940A - A kind of silt-cleaning vessel for river way - Google Patents
A kind of silt-cleaning vessel for river way Download PDFInfo
- Publication number
- CN106120940A CN106120940A CN201610761155.6A CN201610761155A CN106120940A CN 106120940 A CN106120940 A CN 106120940A CN 201610761155 A CN201610761155 A CN 201610761155A CN 106120940 A CN106120940 A CN 106120940A
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- ship
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- shaped floating
- slideway
- river
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- 238000004140 cleaning Methods 0.000 title abstract 3
- 238000003756 stirring Methods 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 30
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 14
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 238000005553 drilling Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
- E02F5/282—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with rotating cutting or digging tools
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The present invention is about a kind of silt-cleaning vessel for river way, including: ship type floating body, skidding type cutting stirring unit, elevator unit, electromotor and distribution board, wherein, skidding type cutting stirring unit includes slideway, flat board skating car, blender, drilling rod and spiral head, and wherein, slideway is vertically set on ship type floating body, flat board skating car is fixed on slideway and slides up and down along slideway, blender is fixed in flat board skating car, and one end of drilling rod arranges spiral head, and the drilling rod other end is connected with blender；Elevator unit includes hoist engine, reel and head sheave, and wherein, hoist engine drives spool turns, and reel is connected by steel wire with flat board skating car, and head sheave is arranged on the top of slideway, and steel wire rack is located in head sheave；Electromotor electrically connects with distribution board, and distribution board electrically connects with blender and hoist engine respectively.Silt-cleaning vessel for river way disclosed by the invention is not limited by weather and flow velocity, simple to operation.
Description
Technical Field
The invention relates to the technical field of river channel dredging, in particular to a river channel dredging boat.
Background
The riverbed rises continuously year by year due to the fact that a large amount of silt of yellow river, big canal, Huai river and the like is deposited, and residents on two banks face the threat of flood in each flood season. For a long time, residents on both banks use a way of building dams to restrain flood, but the method raises the river bed, so that the height difference between the river bed and the ground on both banks is larger and larger.
Among the prior art, water spray formula river course desilting ship utilizes the rainy day river velocity of water to be greater than and carries out work when 20 meters per second, utilizes ship power to drive the water pump, produces high-pressure rivers and gets into the spray pipe, jets out rivers through the spray gun of installing on the spray pipe, and the silt of depositing the river bottom is stirred into the muddy form, flows away along with the river water to realize the effect of desilting.
However, the water-jet type river dredging ship can normally work only when the weather and the speed of the river ship meet the requirements, and the restriction on dredging work is large.
Disclosure of Invention
In order to overcome the problems in the related art, the invention provides a river channel dredging ship, which comprises: a ship-shaped floating body, a roller-type cutting and stirring unit, a winch unit, a generator and a distribution board, wherein,
the wheel sliding type cutting and stirring unit comprises a slideway, a flat wheel pulley, a stirrer, a drill rod and a spiral head, wherein the slideway is vertically arranged on the ship-shaped floating body, the flat wheel pulley is clamped on the slideway in a sliding manner and slides up and down along the slideway, the stirrer is fixed on the flat wheel pulley, one end of the drill rod is provided with the spiral head, and the other end of the drill rod is connected with the stirrer;
the hoisting unit comprises a hoisting machine, a winding drum and a head sheave, wherein the hoisting machine drives the winding drum to rotate, the winding drum is connected with the flat plate pulley through a steel wire, the head sheave is arranged at the top end of the slideway, and the steel wire is wound on the head sheave;
the generator is electrically connected with the distribution board, and the distribution board is electrically connected with the stirrer and the winch respectively.
Preferably, the river dredging ship comprises five groups of the roller-skating type cutting and stirring units;
two sets of the wheel-sliding type cutting and stirring units are symmetrically arranged on two sides of the ship-shaped floating body, and the other three sets of the wheel-sliding type cutting and stirring units are arranged at the stern of the ship-shaped floating body;
the distance between the three groups of the roller-skating type cutting and stirring units arranged at the stern of the ship-shaped floating body is set to be 30 cm.
Preferably, the slideway is configured as butt-welded channel steel;
a 15 cm gap is formed between the butt welding channel steel;
the butt welding channel steel is vertically arranged on the ship-shaped floating body, one end of the butt welding channel steel is fixed on the ship-shaped floating body, and the other end of the butt welding channel steel extends upwards.
Preferably, the flat wheel pulley comprises two groups of pulleys and a flat car;
the two groups of pulleys are respectively arranged in the slideway and outside the slideway;
the two groups of pulleys are coaxial pulleys, and each group of pulleys is fixedly connected with each other;
and the flat car is fixedly connected with the wheel shafts of the two groups of pulleys.
Preferably, the drill rod is set to have a length of 30-40 cm.
Preferably, the edge of the screw head is provided with a hard blade.
Preferably, a solar generator set is further arranged on the boat-shaped floating body and electrically connected with the stirrer.
Preferably, two propellers are symmetrically arranged at the stern of the ship-shaped floating body.
Preferably, the bottom of the ship-shaped floating body is a flat bottom structure, a triangular groove is formed in the bottom of the ship-shaped floating body, and a balancing weight is arranged in the triangular groove.
Preferably, stabilizing plates are arranged on two sides of the bottom of the ship-shaped floating body, and the angle between each stabilizing plate and the bottom of the ship-shaped floating body is 135 degrees;
the width of the stabilizing plate is 30 cm, and the length of the stabilizing plate is matched with that of the ship-shaped floating body.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the invention discloses a river dredging ship, which comprises: the device comprises a ship-shaped floating body, a roller-type cutting and stirring unit, a winch unit, a generator and a distribution board, wherein the roller-type cutting and stirring unit comprises a slide way, a flat plate roller pulley, a stirrer, a drill rod and a spiral head, the slide way is vertically arranged on the ship-shaped floating body, the flat plate roller pulley is clamped on the slide way in a sliding manner and slides up and down along the slide way, the stirrer is fixed on the flat plate roller pulley, one end of the drill rod is provided with the spiral head, and the other end of the drill rod is connected with the stirrer; the hoisting unit comprises a hoisting machine, a winding drum and a head sheave, wherein the hoisting machine drives the winding drum to rotate, the winding drum is connected with the flat plate pulley through a steel wire, the head sheave is arranged at the top end of the slideway, and the steel wire is wound on the head sheave; the generator is electrically connected with the distribution board, and the distribution board is electrically connected with the stirrer and the winch respectively. From the above description, the river channel dredging ship disclosed by the invention utilizes the buoyancy of the ship-shaped floating body and the cutting and stirring force of the stirrer, so that the silt with high silt in the river channel flows to the downstream after being cut and stirred by the river channel dredging ship. Meanwhile, the river channel dredging ship disclosed by the invention is not limited by weather and rivers, and the running direction of the ship body can be controlled by using the generator on the ship.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural view of a river dredging vessel provided by an embodiment of the invention;
fig. 2 is a schematic cross-sectional structure view of a river dredging vessel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a partial structure according to an embodiment of the present invention;
in fig. 1 to 3, the symbols represent:
1-ship-shaped floating body, 2-roller-type cutting and stirring unit, 21-slideway, 22-flat wheel pulley, 221-pulley, 222-flat wheel, 23-stirrer, 24-drill rod, 25-screw head, 3-winch unit, 31-winch, 32-winding drum, 33-head pulley, 4-generator, 5-switchboard, 6-solar generator unit, 7-propeller, 8-triangular groove, 9-counterweight block and 10-stabilizing plate.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The river channel dredging ship provided by the embodiment of the invention can be applied to river channels such as yellow river, big canal, Huai river and the like, and the mud stirring principle is utilized to cut and stir the silt above the ground part, so that the stirred silt flows down along with the river, and the river bed is lowered.
Referring to fig. 1, fig. 1 is a schematic structural view of a river dredging vessel provided by an embodiment of the invention.
As shown in fig. 1, the river dredging vessel according to the embodiment of the present invention includes a boat-shaped floating body 1, a roller-type cutting and stirring unit 2, a hoisting unit 3, a generator 4, and a distribution board 5. Wherein,
the ship-shaped floating body 1 is provided with a ship-shaped floating body, but the bow of the ship-shaped floating body 1 is provided with a cone, the stern of the ship-shaped floating body 1 is provided with a rectangular plane, and the bow is provided with a bow rudder for controlling the running direction of the ship-shaped floating body 1. Meanwhile, a work and rest room is also arranged at the position of the ship bow, and the work and rest room is a control room and is used for controlling the work of the generator 4 and the switchboard 5.
The skidding type cutting and stirring unit 2 is arranged on the ship type floating body 1, generally, in order to make the effect of cutting and stirring silt better, a plurality of skidding type cutting and stirring units 2 are arranged on the ship type floating body 1, and the plurality of skidding type cutting and stirring units 2 are symmetrically arranged on the ship type floating body 1, so that the balance of the ship type floating body 1 on a river can be ensured. Five groups of roller-skating type cutting and stirring units 2 are arranged on the river dredging ship provided by the embodiment of the invention, wherein two groups of the roller-skating type cutting and stirring units are symmetrically arranged at two sides of the ship-shaped floating body 1, the other three groups of the roller-skating type cutting and stirring units are symmetrically arranged at the stern of the ship-shaped floating body 1, and the five groups of roller-skating type cutting and stirring units 2 are symmetrically arranged on the ship-shaped floating body 1, so that the river dredging ship can keep balance. The distance between the three sets of the roller cutting and stirring units 2 arranged at the stern is set to be 30 cm, and of course, a person skilled in the art can adjust the distance according to the size of the stern of the boat-shaped floating body 1.
The wheel sliding type cutting and stirring machine unit comprises a slideway 21, a flat wheel pulley 22, a stirrer 23, a drill rod 24 and a spiral head 25, wherein the slideway 21 is used for the flat wheel pulley 22 to slide up and down on the slideway 21, so the slideway 21 is vertically arranged on the ship-shaped floating body 1. The slideway 21 provided by the embodiment of the invention is composed of butt welding channel steel, two channel steel are oppositely welded on the boat-shaped floating body 1, wherein one end of the butt welding channel steel is fixedly welded on the boat-shaped floating body 1, and the other end of the butt welding channel steel extends upwards. The butt welding channel steel is composed of two channel steels which are fixed relatively, a gap between the two channel steels is set to be 15 cm, and the pulley 221 on the flat-plate pulley trolley 22 slides in the gap.
Referring to fig. 2, fig. 2 is a schematic cross-sectional structure provided in the embodiment of the present invention.
As shown in fig. 2, a slide rail 21 formed of butt-welded steel channels is fixed to the boat-shaped floating body 1 at one end and extends upward at the other end, so that the roller-type cutting and stirring unit 2 can slide up and down on the slide rail 21. The flat wheel pulley 22 comprises two groups of pulleys 221 and a flat car 222, each group of pulleys 221 comprises two idler wheels, the two idler wheels are connected through wheel shafts to form a coaxial pulley, a group of pulleys 221 is respectively arranged in the slideway 21 and outside the slideway 21, the two groups of pulleys 221 are fixedly connected, namely a group of pulleys 221 is respectively arranged in a gap between the butt welding channel steel and outside the gap, and the two groups of pulley sliding intelligence are guaranteed to slide in the up-down direction of the slideway 21.
The flat car 222 is fixedly connected to the axles of the two sets of pulleys 221, and when the two sets of pulleys 221 slide on the slide rail 21, the flat car 222 is driven to slide up and down. The agitator 23 is fixed to the flat car 222, and when the flat car 222 slides up and down, the agitator 23 is driven to slide up and down. Fig. 3 is a partial schematic structural view provided in the embodiment of the present invention, and as shown in the drawing, a screw head 25 is provided at one end of the drill pipe 24, and the other end of the drill pipe 24 is connected to the agitator 23. The stirring machine 23 drives the drill rod 24 to rotate, the drill rod 24 drives the spiral head 25 to rotate, so that silt is stirred, and when the stirring machine 23 moves up and down under the driving of the flat-plate pulley 22, the stirring depth is controlled. Wherein the length of the drill rod 24 is set to be 30-40 cm, and the edge of the screw head 25 is provided with a hard blade, so that the silt can be conveniently cut. The screw head 25 is made of 45-gauge steel, and alloy blocks are welded to the edges to cut hardwares.
The winch unit 3 comprises a winch 31, a winding drum 32 and a head sheave 33, wherein the winch 31 drives the winding drum 32 to rotate the winding drum 32, a steel wire rope is wound on the winding drum 32, one end of the steel wire rope is connected with the flat plate pulley 221, the other end of the steel wire rope is wound on the winding drum 32, when the winding drum 32 rotates, the steel wire rope is wound on the winding drum 32, and meanwhile the steel wire rope drives the flat plate pulley 222 to slide upwards. The head sheave 33 is fixed at the top end of the sliding part, that is, the top end of the butt welding channel steel, the steel wire rope is wound on the head sheave 33, and the winding machine 31 drives the steel wire rope to slide on the head sheave 33 in the process of rolling the winding drum 32.
The ship-shaped floating body 1 is further provided with a generator 4 and a distribution board 5, the generator 4 supplies power to the stirrer 23 and the winch 31, respectively, and the distribution board 5 distributes the electric energy generated by the generator 4 and controls the operation of the winch 31 and the stirrer 23. When two sets of the roller-skating type cutting and stirring units 2 need to work in the dredging process, the two winches 31 and the stirrer 23 are controlled to work. In addition, the hoist 31 is automatically controlled to be lifted and lowered, and may be adjusted to be lifted and lowered automatically to the same height. The generator 4 adopts a 100KW diesel generator 4 to meet the requirements of each unit.
In order to fully utilize the ship surface of the ship-shaped floating body 1, a solar generator set 6 can be arranged on the ship-shaped floating body 1 to supplement or replace part of the set for power supply.
Two propellers 7 are arranged at the stern of the boat-shaped floating body 1, and the propellers 7 rotate to push the boat body to slide. The propeller 7 is powered by the generator 4 or the solar generator set 6. For example, after the dredging is completed, the power consumption of the dredging ship is reduced, and at the moment, the solar unit is only used for supplying power to the propeller 7.
Because of the unevenness of the riverbed and the uneven flow, the ship body must be stable to ensure the smooth dredging operation. Therefore, a triangular groove 8 structure is provided in the middle of the bottom of the ship, a stabilizing plate 10 is provided on each side of the bottom of the ship, the length of the stabilizing plate 10 is matched with the length of the ship, the width of the stabilizing plate is set to be 30 cm, the angle between the stabilizing plate 10 and the bottom of the ship is set to be 135 degrees, and the stabilizing plate 10 is expanded to the outer side of the ship. Therefore, the swinging of the ship body can be reduced, and the ship body is more stable. In addition, the balance weight 9 is arranged in the triangular groove 8, so that the stability of the ship body can be improved.
When the river dredging ship is used, the manufactured and installed ship body is transported to a preset place, the generator 4 is started, the winch 31 is started, the spiral head 25 moves to a preset stirring position, the stirrer 23 is started, the stirrer 23 drives the drill rod 24 to rotate, the spiral head 25 starts to stir silt under the driving of the drill rod 24, and the stirred silt flows down along with water flow under the driving of the water flow. The dredging boat stirs the silt, slides downwards along with the water flow and stirs the next section of silt.
The long deposition river reach can be operated in a segmented mode in the dredging process, and meanwhile, a plurality of river dredging ships can be used for dredging at the river reach, all the dredging ships are uniformly commanded, and silt is stirred by all the dredging ships at the same time. The operation is repeated in this way, so that the sediment height of the river reach in the river reach is gradually reduced until reaching the ideal height.
As can be seen from the above description, the river dredging vessel disclosed in the embodiment of the present invention can carry out dredging at any time, and is not limited by weather and rivers. The river channel dredging ship is simple in structure and convenient to operate. During assembly, the optional product is assembled, so that the manufacturing cost is reduced.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. The utility model provides a river course desilting ship which characterized in that includes: a ship-shaped floating body, a roller-type cutting and stirring unit, a winch unit, a generator and a distribution board, wherein,
the wheel sliding type cutting and stirring unit comprises a slideway, a flat wheel pulley, a stirrer, a drill rod and a spiral head, wherein the slideway is vertically arranged on the ship-shaped floating body, the flat wheel pulley is clamped on the slideway in a sliding manner and slides up and down along the slideway, the stirrer is fixed on the flat wheel pulley, one end of the drill rod is provided with the spiral head, and the other end of the drill rod is connected with the stirrer;
the hoisting unit comprises a hoisting machine, a winding drum and a head sheave, wherein the hoisting machine drives the winding drum to rotate, the winding drum is connected with the flat plate pulley through a steel wire, the head sheave is arranged at the top end of the slideway, and the steel wire is wound on the head sheave;
the generator is electrically connected with the distribution board, and the distribution board is electrically connected with the stirrer and the winch respectively.
2. The river dredging vessel of claim 1, wherein the river dredging vessel comprises five sets of the roller-skating type cutting-stirring units;
two sets of the wheel-sliding type cutting and stirring units are symmetrically arranged on two sides of the ship-shaped floating body, and the other three sets of the wheel-sliding type cutting and stirring units are arranged at the stern of the ship-shaped floating body;
the distance between the three groups of the roller-skating type cutting and stirring units arranged at the stern of the ship-shaped floating body is set to be 30 cm.
3. The river channel dredging vessel of claim 1, wherein the chute is configured as butt-welded channel steel;
a 15 cm gap is formed between the butt welding channel steel;
the butt welding channel steel is vertically arranged on the ship-shaped floating body, one end of the butt welding channel steel is fixed on the ship-shaped floating body, and the other end of the butt welding channel steel extends upwards.
4. The river channel dredging ship of claim 1, wherein the flat wheel trolley comprises two sets of pulleys and a flat car;
the two groups of pulleys are respectively arranged in the slideway and outside the slideway;
the two groups of pulleys are coaxial pulleys, and each group of pulleys is fixedly connected with each other;
and the flat car is fixedly connected with the wheel shafts of the two groups of pulleys.
5. The river dredging vessel of claim 1, wherein the drill rod is set to have a length of 30-40 cm.
6. A river dredging vessel according to claim 1, wherein the edge of the screw head is provided with hard blades.
7. The river channel dredging ship of claim 1, wherein a solar generator set is further arranged on the ship-shaped floating body, and the solar generator set is electrically connected with the stirring machine.
8. The river channel dredging ship of claim 1, wherein two propellers are symmetrically arranged at the stern of the ship-shaped floating body.
9. The river channel dredging ship of claim 1, wherein the bottom of the ship-shaped floating body is a flat bottom structure, a triangular groove is formed in the bottom of the ship-shaped floating body, and a balancing weight is arranged in the triangular groove.
10. The river channel dredging ship according to claim 1, wherein stabilizing plates are arranged on two sides of the bottom of the ship-shaped floating body, and the angle between each stabilizing plate and the bottom of the ship-shaped floating body is 135 degrees;
the width of the stabilizing plate is 30 cm, and the length of the stabilizing plate is matched with that of the ship-shaped floating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761155.6A CN106120940A (en) | 2016-08-29 | 2016-08-29 | A kind of silt-cleaning vessel for river way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761155.6A CN106120940A (en) | 2016-08-29 | 2016-08-29 | A kind of silt-cleaning vessel for river way |
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| CN106120940A true CN106120940A (en) | 2016-11-16 |
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| CN201610761155.6A Pending CN106120940A (en) | 2016-08-29 | 2016-08-29 | A kind of silt-cleaning vessel for river way |
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| CN108867732A (en) * | 2018-08-15 | 2018-11-23 | 温利军 | A kind of Accrete clearing device applied to hydraulic engineering |
| CN115126031A (en) * | 2022-07-19 | 2022-09-30 | 滨州学院 | Self-propelled cutter suction type lake and sea multipurpose dredger |
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| CN108867732A (en) * | 2018-08-15 | 2018-11-23 | 温利军 | A kind of Accrete clearing device applied to hydraulic engineering |
| CN115126031A (en) * | 2022-07-19 | 2022-09-30 | 滨州学院 | Self-propelled cutter suction type lake and sea multipurpose dredger |
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