KR20200102688A - Cutter for dredger - Google Patents

Abstract

An objective of the present invention is to provide a hydraulic cutter for a dredger which blocks the dispersion of floating objects to the surroundings when performing dredging work of a dredger, and prevents a cutter rotation blade and a driving means for rotating the cutter rotation blade from being overloaded to effectively perform the dredging work. To achieve the objective, the hydraulic cutter for a dredger comprises: a link member separably fastened to an end of a boom of a dredger; a pollution prevention cover mounted on the front end of the link member to cover a dredging area when dredging; a suction pipe mounted on an upper portion of the pollution prevention cover to suck dredged objects; a driving means case hung and mounted on sides of the pollution prevention cover and the link member; and a cutter assembly arranged on a lower portion of the pollution prevention cover and rotatably connected to a driving means installed in the driving means case to cut and rotate to dredge objects to be dredged.

Description

Hydraulic cutter for dredger {CUTTER FOR DREDGER}

The present invention relates to a hydraulic cutter for a dredger, and more specifically, it prevents the spread of floating matters to the surroundings during the dredging operation of a dredger, and at the same time prevents overloading of the cutter rotary blade and the driving means for rotating it, thereby making dredging work. It relates to a hydraulic cutter for a dredger that allows it to proceed smoothly.

In general, sludge is deposited on the bottom of the water surface such as rivers or lakes by various wastewater flowing from the land when it rains, or sludge is accumulated by artificial throwing.These sludges accelerate water pollution and destroy the ecological environment. It is causing.

Therefore, a dredger is used to remove and dredge the sludge accumulated on the bottom surface of a river or lake.

The dredger is equipped with appropriate facilities and equipment according to the depth of the water body to be dredged, the type of soil at the bottom, the transport distance of the dredged material, etc., and dredging works to deepen the depth of rivers, canals, ports, and routes, It is used for collecting soil, sand, minerals, etc., including sludge under water, for the foundation construction of underwater structures, and for lifting and removing seabed waste.

To this end, the dredger is equipped with a cutter for crushing the dredging object, that is, soil, sand, rock, and the like.

However, when a conventional cutter is rotated to dredge an object to be dredged, it cannot block the diffusion of the floating material generated during cutting to the surroundings, so the working environment is contaminated by the floating material, and the view of the dredging area due to the floating material becomes very cloudy. There is a problem that interferes with the dredging operation.

In addition, when the object to be dredged is a hard material when the cutter is rotated (eg, rock, stone, etc.), there is a disadvantage that the dredging operation cannot proceed smoothly due to an overload on the cutter rotating blade and the driving means for rotating it.

Korean Patent Application Publication No. 10-2016-0087126 (2016.07.21)

The present invention was devised in consideration of the above points, and it is possible to block the diffusion of floating matter to the surroundings during dredging, and even if the object to be dredged is a hard material (e.g., rock, stone, etc.) when the cutter is rotated, the cutter rotates. It is an object of the present invention to provide a hydraulic cutter for a dredger that prevents overload from being applied to a blade and a driving means that rotates it so that the dredging operation can proceed smoothly.

In order to achieve the above object, the present invention includes: a link member detachably fastened to an end of a boom of a dredger; An anti-pollution cover mounted on the front end of the link member to cover the dredging area during dredging; A suction pipe mounted on the upper part of the pollution prevention cover to suck dredged material; A driving means case mounted across the side of the link member and the pollution prevention cover; A cutter assembly disposed at the bottom of the anti-pollution cover and rotatably connected to a driving means installed in the driving means case, and rotating by cutting for dredging of a dredging object; And a driving means installed in the driving means case to generate a rotational driving force for the cutter assembly. It provides a hydraulic cutter for a dredger, characterized in that configured to include.

Preferably, the cutter assembly comprises: a drum connected to the output gear of the driving means so as to rotate forward and backward; A plurality of adapters provided in a structure having a cutter insertion hole, formed at equal intervals along the circumferential direction on the surface of the drum and mounted in an alternating arrangement along the left and right directions; A cutter made of a clamp inserted into each adapter and a cutting blade integrally formed at the outer end of the clamp; It consists of, and as the adapters are alternately arranged in the left and right directions of the drum, it is characterized in that the cutter forms an alternate arrangement along the left and right directions of the drum.

More preferably, in the adapter, the first, second, and third adapters are mounted along the left and right direction of the drum, the first and third adapters are located on the same line, and the second adapter is compared with the first and third adapters. The cutters that are located further back along the circumferential direction are also adopted as the first, second, and third cutters to form the same arrangement as the first, second, and third adapters, while It is characterized in that the blade angles of the two cutters are set differently.

In addition, a damper cover is mounted to be opened and closed inside the suction pipe, and a damper cover hinge receiving space is formed at one side of the inner diameter of the suction pipe so that the inner diameter of the suction pipe is not reduced due to the damper cover when the damper cover is opened. And, a damper cover receiving space is formed on both sides of the damper cover hinge receiving space to accommodate the damper cover when the damper cover is opened.

Further, the driving means mounted in the driving means case includes: a hydraulic motor mounted inside the rear end of the driving case; Two or more reduction gears engaged with the input gear of the hydraulic motor and rotatably embedded in the intermediate space of the drive case; It is characterized in that it consists of an output gear that is engaged with the reduction gear and is mounted inside the front end of the drive case and is connected coaxially with the rotating shaft of the drum.

Through the above-described problem solving means, the present invention provides the following effects.

First, during the dredging operation by the cutter, as the anti-pollution cover is in close contact with the surface of the dredging part, the dredging floating material generated by the driving of the cutter is blocked by the anti-polluting cover and can be prevented from spreading to the surroundings.

Second, by installing the array of cutters in an alternating arrangement along the left and right directions, when the object to be dredged is a hard material (e.g., rock, stone, etc.) when the cutter rotates, the load is applied to only some of the cutters. It can prevent overloading.

Third, when the damper cover for opening and closing the suction pipe is opened, an area occupied by the damper cover occupying the inner diameter of the suction pipe can be minimized, thereby preventing a decrease in the efficiency of the vacuum suction pump.

1 and 2 are perspective views showing a hydraulic cutter for a dredger according to the present invention,
3 is a front view showing a hydraulic cutter for a dredger according to the present invention,
Figure 4 is a side view showing a hydraulic cutter for a dredger according to the present invention,
Figure 5 is an image showing a damper cover opening and closing structure of the configuration of the hydraulic cutter for a dredger according to the present invention,
6 is an exploded perspective view showing a driving means of the hydraulic cutter for a dredger according to the present invention,
Figure 7 is a side view of the entire dredger showing the mounting state and operating state of the hydraulic cutter for the dredger according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Attached Figures 1 to 4 shows a hydraulic cutter for a dredger according to the present invention, Figure 7 shows a state in which the hydraulic cutter according to the present invention is installed on the dredger.

1 to 4, reference numeral 10 designates a link member that is detachably fastened to a boom (eg, a forkrain boom) included in a dredger.

The link member 10 of the hydraulic cutter according to the present invention becomes a part connected to the boom unit 102 of the dredger 100 as shown in FIG. 7.

For example, the link member 10 separates the hydraulic cutter of the present invention from the boom 102 of the dredger 100, as can be interchangeably connected to various tools (buckets, crusher, etc.) It becomes the part that connects possible.

Accordingly, after the link member 10 is in close contact with the end of the boom stand 102, the hydraulic cutter of the present invention including the link member 10 is attached to the boom stand 102 by inserting a pin into a hole that matches each other. It is assembled.

An anti-pollution cover 20 that covers the dredging area during dredging is integrally mounted at the front end of the link member 10 through welding or the like.

Therefore, when the cutter 46 of the cutter assembly 40 to be described later rotates and dredges the dredging object, the pollution prevention cover 20 is in close contact with the surrounding surface including the dredging object, thereby driving the cutter. Dredging can be prevented from spreading to the periphery by blocking the generated dredging float by the anti-pollution cover. Accordingly, the work environment is contaminated by the floating material, and the field of view of the dredging area due to the floating material becomes cloudy. It can proceed smoothly.

A suction pipe 30 is mounted on the upper part of the pollution prevention cover 20 to suck dredged material, and a suction hose connected to the suction vacuum suction pump is connected to the suction pipe 30.

Accordingly, semi-gifts and floating materials generated during dredging may be transferred to a desired location through the suction pipe 30 and the suction hose and collected.

In this case, a damper cover 31 is mounted to be openable and closed inside the suction pipe 30.

The damper cover 31 is in a closed position at normal times and just before the suction operation (when water for a smooth suction operation is supplied to the position before the damper cover of the suction hose and suction pipe), and during suction, the dredged material and the floating material are in the suction pipe. (30) It is operated open to be sucked and conveyed toward the suction hose.

However, if the damper cover 31 is present in the inner diameter of the suction pipe 30 when the damper cover 31 is opened, the diameter of the suction pipe 30 decreases due to the damper cover 31, and thus the damper cover 31 is a semi-gift It may be a disturbing factor in the suction action of overburdens, etc., and the suction efficiency of the vacuum suction pump may be lowered.

Thus, as shown in the accompanying image diagram of FIG. 5, a damper cover hinge receiving space 32 is formed at one side of the inner diameter of the suction pipe 30, and both sides of the damper cover hinge receiving space 32 A damper cover receiving space 33 in which the damper cover 31 is accommodated when the damper cover 31 is opened is formed separately.

Therefore, when the damper cover 31 is opened, the hinge portion of the damper cover 31 is accommodated in the damper cover hinge receiving space 32 formed on one side of the inner diameter of the suction pipe 30, and at the same time, the damper cover 31 is By being accommodated in the damper cover receiving space 33 formed on both sides of the hinge receiving space 32, the diameter of the suction pipe 30 is maintained when the damper cover 31 is opened, so that the suction efficiency of the vacuum suction pump can be maintained. It can be, and due to this, the suction action of semi-gifts and floating objects can be made smoothly.

On the other hand, the drive means case 60 is integrally mounted over the side of the link member 10 and the anti-pollution cover 20 through welding, etc., and the inside of the drive means case 60 has a cutter assembly 40 Driving means 50 for generating a rotational driving force for are mounted in a predetermined arrangement.

Preferably, the driving means 50 includes a hydraulic motor 51 capable of forward and reverse rotation mounted inside the rear end of the driving means case 60, as shown in FIG. 6, and the hydraulic motor 51 The input gear 52 mounted on the output shaft of the input gear 52 and two or more reduction gears 53 that are meshed with the input gear 52 and are rotatably embedded in the intermediate space of the driving means case 60, and the reduction gear ( 53) and is mounted inside the front end of the driving means case 60 while being engaged with the output gear 54 which is connected coaxially with the rotational shaft of the drum 41 included in the cutter assembly 40.

This drive means 50 can easily provide rotational driving force for the cutter assembly 40 by using the hydraulic motor 51 to enable separate forward and reverse rotation, and a reduction gear connected to the hydraulic motor 51 The heat can be changed in various ways.

According to the present invention, the cutter assembly 40 is mounted on the bottom of the anti-pollution cover 20 while rotatably connected to the driving means installed in the driving means case 60.

The cutter assembly 40 is a configuration that cuts and rotates for dredging of a dredging object, and has a drum 41 connected to the output gear 54 of the driving means 50 so as to be rotated forward and backward as a rotating body.

In particular, a plurality of adapters 43 and cutters 46 are mounted on the surface of the drum 41 at equal intervals along the circumferential direction and alternately arranged along the left and right directions.

At this time, the adapter 43 is provided in a structure having a cutter insertion hole 42, is formed at equal intervals along the circumferential direction on the surface of the drum 41, and at the same time is formed in an alternating arrangement along the left and right directions, and is mounted by welding.

In addition, the cutter 46 is composed of a fixture 44 inserted and fixed to the cutter insertion hole 42 of each adapter 43, and a pointed cutting blade portion 45 integrally formed at the outer end of the fixture 44. .

Accordingly, the cutter 46 is inserted and fixed to each of the adapters 43, so that the adapters 43 form equal intervals along the circumferential direction on the surface of the drum 41 and are alternately arranged in the left and right directions, the cutter Similarly, the surface of the drum 41 is equally spaced along the circumferential direction and is alternately arranged in the left and right directions.

As an embodiment, in the adapter 43, the first, second, and third adapters 43-1, 43-2, and 43-2 are mounted along the left and right directions of the drum 41, and the first and third adapters (43-1, 43-3) are located on the same line, and the second adapter (42-2) is located further back along the circumferential direction compared to the first and third adapters (43-1, 43-2) do.

Similarly, the cutter 46 inserted into the adapter 43 is also adopted as the first, second, and third cutters 46-1, 46-2, 46-3, as in the arrangement of the first to third adapters, The first and third cutters 46-1 and 46-3 are located on the same line along the left and right direction on the surface of the drum, and the second cutter 46-2 is the first and third cutters 46-1, It is located further back along the circumferential direction compared to 46-2), and the blade angles of the first and third cutters (46-1, 46-2) and the blade angle of the second cutter (46-2) are set differently. do.

On the other hand, when the drum 41 rotates by the hydraulic motor 51, if all of the cutters 46 for dredging the dredging object exist on the same line, all the cutters 46 for the dredging object (eg, rock, etc.) A load may be applied by contacting at the same time, and accordingly, the hydraulic motor 51 may be overloaded, resulting in damage to the hydraulic motor.

However, in the present invention, since the cutters 46 have an alternating arrangement in the left and right directions on the surface of the drum 41, for example, the first and third cutters 46-1 and 46-3 are left and right on the surface of the drum. It is located on the same line along the direction, and the second cutter (46-2) is located further back along the circumferential direction than the first and third cutters (46-1, 46-2), so only some cutters are dredged. Since the load is applied by contacting the object (eg, rock, etc.), it is possible to prevent overloading the hydraulic motor 51 accordingly.

In other words, each of the cutters 46 mounted on the drum 41 can be rotated sequentially when cutting the dredged object, and accordingly, a load is sequentially applied to each of the cutters 46, so in the end, the hydraulic motor Overloading phenomenon can be easily prevented.

Here, looking at the operating process of the hydraulic cutter for a dredger of the present invention made of the above configuration is as follows.

First, the hydraulic cutter according to the present invention is connected to the boom unit 102 of the dredger 100 through the link member 10.

Along with this, by adjusting the boom stand 102, the pollution prevention cover 20 is in close contact with the ground in the water surface of the dredging area during dredging.

Subsequently, by driving the hydraulic motor 51, the cutter assembly 40 through the input gear 52 mounted on the output shaft of the hydraulic motor 51 and the reduction gear 53 meshed with the input gear 52 Rotation power is applied to the rotating shaft of the drum 41 included in the.

Subsequently, when the drum 41 rotates by the hydraulic motor 51, each adapter 43 and the cutter 46 rotate while cutting the dredging object and dredging.

At the same time, water is supplied to the inside of the suction pipe 30 for ease of vacuum suction of water while the damper cover 31 is closed, and then the vacuum suction pump (not shown) is driven, whereby the water is vacuum sucked. At the same time, after the damper cover 31 is opened by vacuum suction, dredged soil and suspended matter including water are sucked and transferred to a desired place through the suction pipe 30 and the suction hose.

At this time, when the damper cover 31 is opened as described above, the hinge portion of the damper cover 31 is accommodated in the damper cover hinge receiving space 32 formed on one side of the inner diameter of the suction pipe 30, and at the same time, the damper cover 31 ) Is accommodated in the damper cover receiving space 33 formed on both sides of the hinge receiving space 32, so that the diameter of the suction pipe 30 is maintained when the damper cover 31 is opened, so that the suction efficiency of the vacuum suction pump is increased. It can be maintained, and due to this, the suction action of semi-gifts and floating objects can be made smoothly.

In addition, when the cutter 46 of the cutter assembly 40 rotates and dredges the dredging object, the pollution prevention cover 20 is in close contact with the surrounding surface including the dredging object, thereby occurring according to the cutter driving. The dredging float is blocked by the pollution prevention cover 20 and can be prevented from spreading to the surroundings.

On the other hand, since the cutters 46 have an alternating arrangement in the left-right direction on the surface of the drum 41, for example, the first and third cutters 46-1 and 46-3 are arranged in the left-right direction on the surface of the drum. And the second cutter 46-2 is located further back along the circumferential direction than the first and third cutters 46-1 and 46-2, so that only some of the cutters are dredged ( For example, it is possible to prevent the hydraulic motor 51 from overloading accordingly, since the load is applied by contacting with rocks, etc.).

That is, if the entire cutter 46 is in a straight line, the load (load) acting on the cutter during dredging is inevitably increased, and accordingly, an overload may be applied to the hydraulic motor 51 that provides rotational force to the cutter. In the present invention, since the cutters 46 have an alternating arrangement in the left-right direction on the surface of the drum 41, for example, the first and third cutters 46-1 and 46-3 are arranged in the left-right direction on the surface of the drum. Is located on the same line along the line, and the second cutter 46-2 is located further back along the circumferential direction compared to the first and third cutters 46-1 and 46-2. The installed cutters 46 can be rotated sequentially when cutting the dredging object, and accordingly, loads are sequentially applied to each of the cutters 46, so that the phenomenon of overloading the hydraulic motor can be easily prevented. I can.

If a load is continuously generated on some of the cutters 46, the hydraulic motor 51 may be temporarily reversely rotated to relieve the load acting on the cutter.

As seen above, during the dredging operation using the cutter of the present invention, it is possible to prevent the dredging float from spreading to the surroundings, to prevent overloading of the hydraulic motor rotating the cutter, and to suck the vacuum suction pump. The dredging operation can be performed smoothly without reducing the efficiency.

On the other hand, the cutter 46 may be coated with an anti-corrosion coating layer to prevent corrosion on the metal surface, and the coating material of the anti-corrosion coating layer is 20% by weight of guanadino benzoimidazole and 15% by weight of oxycarboxylic acid leaves. , Imidazoline thione 10% by weight, hafnium 15% by weight, molybdenum emulsified (MoS2) 10% by weight, aluminum oxide 25% by weight, diglycidyl aniline 5% by weight, the coating thickness can be formed to 7㎛ have.

Guanadino benzoimidazole, oxycarboxylic acid leaves, imidazoline thione and diglycidyl aniline play a role in preventing corrosion and discoloration.

Hafnium is a transition metal element with corrosion resistance and plays a role in having excellent waterproof and corrosion resistance.

Molybdenum emulsified plays a role of imparting wetness and lubricity to the surface of the coating film.

Aluminum oxide is added for the purpose of fire resistance and chemical stability.

The reason why the ratio of the constituent components and the coating thickness were numerically limited as described above, as a result of the inventor's analysis through the test results several times, showed the optimum anti-corrosion effect at the ratio.

In addition, the contamination prevention cover 20 may be coated with a contamination prevention coating layer made of a contamination prevention coating composition to effectively achieve the adhesion prevention and removal of contaminants.

The anti-fouling coating composition contains amphodiglycinate and sorbitol ester in a molar ratio of 1:0.01 to 1:2, and the total content of amphodiglycinate and sorbitol ester is 1 to 10% by weight based on the total aqueous solution. to be.

The molar ratio of the amphodiglycinate and sorbitol ester is preferably 1:0.01 to 1:2.If the molar ratio is out of the above range, the coating property of the substrate decreases or the surface moisture adsorption increases after application to remove the coating film. There is a problem.

The amphodiglycinate and sorbitol ester is preferably 1 to 10% by weight in the total aqueous solution of the composition, and if it is less than 1% by weight, there is a problem that the applicability of the antifouling cover 20 decreases, and if it exceeds 10% by weight Crystal precipitation is liable to occur due to an increase in the coating film thickness.

On the other hand, as a method of applying the present antifouling coating composition to the antifouling cover 20, it is preferable to apply it by a spray method. In addition, the final coating film thickness of the anti-pollution cover 20 is preferably 500 to 2000Å, and more preferably 1000 to 2000Å. If the thickness of the coating film is less than 500 Å, there is a problem of deterioration in the case of high temperature heat treatment, and if it exceeds 2000 Å, crystal precipitation on the coated surface is liable to occur.

In addition, the present antifouling coating composition may be prepared by adding 0.1 mol of amphodiglycinate and 0.05 mol of sorbitol ester to 1000 ml of distilled water, followed by stirring.

In addition, a packing may be inserted between the drive means case 60 in which the drive means 50 is embedded and the cover of the drive means case 60, and the raw material content ratio of this packing is 60% by weight of rubber, carbon black 33 to 36% by weight, 2 to 5% by weight of antioxidant, and 1 to 3% by weight of sulfur as an accelerator are mixed.

Carbon black is to increase abrasion resistance, so it is added, but if the content is less than 33% by weight, elasticity and abrasion resistance decrease, and if it exceeds 36% by weight, the content of rubber, which is the main component, is relatively small, so the elasticity may decrease. , 33 to 36% by weight are mixed.

Antioxidant is 3C (N-PHENYL-N'-ISOPROPYL- P-PHENYLENEDIAMINE) or RD (POLYMERIZED 2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE) to add 2 to 5% by weight, 2 If it is less than% by weight, the product is liable to be oxidized, and if too much is added and exceeds 5% by weight, the content of rubber, which is the main component, is relatively small, and there is a fear that the elasticity may decrease, and the price of the antioxidant is expensive. ~5% by weight is appropriate.

Sulfur, which is an accelerator, is mixed with 1 to 3% by weight. If less than 1% by weight, the vulcanization effect in the heating process during molding is insignificant, so 1% by weight or more is added. If it exceeds 3% by weight, since the content of the rubber as the main component is relatively small, the elasticity may be lowered, so 1 to 3% by weight is appropriate.

Accordingly, since the present invention is reinforced with synthetic rubber having elasticity in various directions, the elasticity, toughness and rigidity of the packing are increased, so that durability is improved, and thus the life of the packing is increased.

In addition, a temperature change measuring unit whose color changes according to temperature may be applied around the hydraulic motor 51. The temperature change measuring unit determines the stepwise temperature change by applying two or more temperature-chromic materials that change color when the temperature reaches a predetermined temperature or higher and separated into two or more sections according to the temperature change. In addition, a protective layer is applied on the temperature change measurement unit to prevent damage to the temperature change measurement unit.

Here, the temperature change measurement unit may be formed by applying a temperature change material having a color change temperature of 40°C or more and 60°C or more, respectively. The temperature change measurement unit is for detecting a temperature change of the paint by changing color according to the temperature of the hydraulic motor 51.

Such a temperature change measuring unit may be formed by applying a temperature change material that changes color when the temperature reaches a predetermined temperature or higher on the surface of the hydraulic motor 51. In addition, the thermochromic material is generally composed of a microcapsule structure of 1 to 10 μm, and can be colored and transparent due to the binding and separation phenomena of the electron donor and the electron acceptor according to the temperature in the microcapsule.

In addition, the temperature discoloration material has a rapid color change and may have various discoloration temperatures such as 40°C, 60°C, 70°C, 80°C, and the like, and the color change temperature can be easily adjusted in various ways. As such a thermochromic material, various types of thermochromic materials may be used based on the principle of molecular rearrangement of organic compounds and spatial rearrangement of atomic groups.

To this end, it is preferable that the temperature change measuring unit is formed to be separated into two or more sections according to the temperature change by applying two or more kinds of thermochromic materials having different discoloration temperatures. It is preferable to use a thermochromic material having a relatively low discoloration temperature and a thermochromic material having a relatively high discoloration temperature, and more preferably, a discoloration temperature of 40℃ or more and 60℃ or more. A temperature change measuring unit can be formed by using a temperature change material.

Through this, it is possible to check the temperature change of the hydraulic motor 51 in stages, so that the temperature change of the paint can be sensed, and accordingly, the hydraulic motor 51 can be operated in an optimal state, and the hydraulic motor ( 51) can be prevented in advance.

In addition, the protective film layer is applied on the temperature change measuring part to prevent damage to the temperature change measuring part due to external impact, and it is easy to check whether the temperature change measuring part is discolored, and at the same time consider that the temperature change material is weak to heat, it has an insulating effect. It is preferable to use a transparent coating material having.

In order to observe the temperature change measurement unit of the hydraulic motor 51 from the outside, it is preferable that the driving means case 60 and the case of the driving means 50 are provided with a transparent viewing window through which the temperature change measurement unit can be observed.

10: link member
20: anti-pollution cover
30: suction pipe
31: damper cover
32: damper cover hinge receiving space
33: damper cover accommodation space
40: cutter assembly
41: drum
42: cutter insertion port
43: adapter
43-1: first adapter
43-2: second adapter
43-3: 3rd adapter
44: fixture
45: cutting blade
46: cutter
46-1: 1st cutter
46-2: 2nd cutter
46-3: 3rd cutter
50: drive means
51: hydraulic motor
52: input gear
53: reduction gear
54: output gear
60: drive means case
100: dredger
102: boom

Claims (4)

A link member 10 detachably fastened to the end of the boom unit 102 of the dredger 100;
An anti-pollution cover 20 mounted on the front end of the link member 10 to cover the dredging area during dredging;
A suction pipe 30 mounted on the top of the pollution prevention cover 20 to suck the dredged material;
A driving means case (60) mounted over the side of the link member (10) and the pollution prevention cover (20);
A cutter assembly 40 which is disposed at the bottom of the anti-pollution cover 20 and is rotatably connected to a driving means installed in the driving means case 60, and rotates cutting for dredging of a dredging object; And
A driving means 50 installed in the driving means case 60 to generate a rotational driving force for the cutter assembly 40;
Hydraulic cutter for a dredger, characterized in that configured to include.
The method according to claim 1,
The cutter assembly 40 is:
A drum 41 connected to the output gear of the driving means so as to rotate forward and backward;
A plurality of adapters 43 provided in a structure having a cutter insertion hole 42, formed at equal intervals along the circumferential direction and mounted in an alternating arrangement along the left and right directions on the surface of the drum 41;
A cutter 46 consisting of a fixing member 44 inserted and fixed into the cutter insertion hole 42 of each adapter 43, and a cutting blade portion 45 integrally formed at the outer end of the fixing member 44;
Consists of,
As the adapters 43 are alternately arranged in the left and right directions of the drum 41, the cutters 46 are also alternately arranged along the left and right directions of the drum 41;
In the adapter 43, the first, second, and third adapters 43-1, 43-2, 43-2 are mounted along the left and right directions of the drum 41, the first and third adapters 43-1, 43-3) is located on the same line, and the second adapter 42-2 is located further rearward along the circumferential direction than the first and third adapters 43-1 and 43-2, and the adapter ( The cutter 46 inserted into 43) is also adopted as the first, second, and third cutters 46-1, 46-2, 46-3, and the first, second, and third adapters 43-1, 43-2, A hydraulic type for a dredger, characterized in that the blade angles of the first and third cutters 46-1 and 46-2 and the blade angles of the second cutter 46-2 are set differently while forming the same arrangement as 43-2). Cutter machine.
The method according to claim 1,
The inside of the suction pipe 30 is equipped with a damper cover 31 so as to be able to open and close, and when the damper cover 31 is opened, the suction pipe 30 so that the inner diameter of the suction pipe 30 does not decrease due to the damper cover 31. A damper cover hinge receiving space 32 is formed on one side of the inner diameter of 30, and both sides of the damper cover hinge receiving space 32 accommodate the damper cover 31 when the damper cover 31 is opened. A hydraulic cutter for a dredger, characterized in that a damper cover receiving space (33) is formed.
The method according to claim 1,
The driving means 50 is:
A hydraulic motor 51 mounted inside the rear end of the driving means case 60;
Two or more reduction gears 53 engaged with the input gear 52 of the hydraulic motor 51 and rotatably embedded in the intermediate space of the driving means case 60;
An output gear 54 engaged with the reduction gear 53 and mounted inside the front end of the driving means case 60 and connected coaxially with the rotating shaft of the drum 41;
Hydraulic cutter for dredger, characterized in that consisting of.

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