CN116464111A - A telescopic desilting ship for change of depth of water - Google Patents

Abstract

The invention relates to the technical field of river dredging, and particularly discloses a telescopic dredging ship for water depth change, which comprises a ship body and a propulsion displacement system, wherein the propulsion displacement system comprises a telescopic walking frame, walking wheels and a first driving piece, one end of the telescopic walking frame is rotatably connected with the ship body, and the telescopic walking frame can be lengthened and shortened; the travelling wheel is arranged at the other end of the travelling frame; the first driving piece is connected with the travelling wheel and used for driving the travelling wheel to rotate. The ship body is moved through the walking wheels, compared with the ship body moving through pile replacement in the prior art, the ship body moving method is small in occupied space, and the telescopic dredging ship for water depth change can be used for construction conditions with limited construction space and is high in universality.

Description

A telescopic desilting ship for change of depth of water

Technical Field

The invention relates to the technical field of river dredging, in particular to a telescopic dredging ship for water depth change.

Background

The cutter suction dredger is used for construction of inland river, lake areas and coastal ports, and is one of the main types of the existing dredgers. The cutter suction dredger is generally non-motorized, is widely used in hydraulic filling engineering, is suitable for dredging relatively loose river bottoms such as sandy soil, silt and the like, and can also be used for dredging relatively hard gravel clay. Two steel columns are arranged at the stern of the cutter suction dredger, one of the steel columns is inserted into the river bottom to serve as a positioning pile when dredging, the dredger is pulled by an anchor cable, and the dredging is swung left and right by taking the positioning pile as the center. When moving forward, like walking with two legs, the piles are alternately replaced by another steel column, and the reamer dredges in a fan shape.

Because the current cutter suction dredger needs to realize the removal of boats and ships through removing the spud in the work progress, and partial foundation sludge dredging engineering is because its unique construction area leads to dredger construction space limited, can't adopt the spud of traditional cutter suction dredger to realize fixedly to traditional cutter suction dredger's excavation scope is less, is not applicable to the construction condition that there is great change in the depth of water.

Therefore, there is a need to provide a telescopic dredging vessel for water depth variation to solve the above problems.

Disclosure of Invention

The invention provides a telescopic dredging ship for water depth change, which can be used for construction working conditions with smaller construction space and has higher universality.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a telescoping dredging vessel for water depth variations, comprising a hull and a propulsion displacement system, the propulsion displacement system comprising:

the telescopic walking frame is rotatably connected with the ship body at one end, and can be lengthened and shortened;

the travelling wheel is arranged at the other end of the travelling frame;

the first driving piece is connected with the travelling wheel and used for driving the travelling wheel to rotate.

Optionally, the travelling wheel is provided with a barb, and the barb is used for grabbing the ground.

Optionally, the telescopic walking frame includes:

the sliding cavity is arranged in the first bracket;

one end of the second bracket is connected with the sliding cavity in a sliding way;

the second driving piece is arranged on the first support, and the output end of the second driving piece is connected with the second support and used for driving the second support to slide so that the second support stretches out of or retracts back into the first support.

Optionally, the telescopic walking frame includes:

the sliding cavity is arranged in the first bracket;

one end of the second bracket is connected with the sliding cavity in a sliding way;

the telescopic adjusting mechanism comprises a third driving piece, a screw and a nut, wherein the third driving piece is arranged on the first bracket, the output end of the third driving piece is connected with the screw and used for driving the screw to rotate, the nut is in threaded connection with the screw, and the second bracket is connected with the nut.

Optionally, the propulsion displacement system further comprises water spraying propellers, the water spraying propellers are symmetrically arranged on two sides of the central axis of the ship body, and the angle of the water spraying propellers relative to the ship body is adjustable.

Optionally, the telescopic dredging ship for water depth change further comprises:

the buffering system comprises a buffering platform and a lifting mechanism, wherein the lifting mechanism is arranged on the ship body and connected with the buffering platform and used for driving the buffering platform to lift, and the buffering platform is used for being abutted with a pile foundation of a wharf so as to fix the ship body.

Optionally, the telescopic dredging vessel for water depth variation further comprises an excavating and conveying system, the excavating and conveying system comprises:

one end of the telescopic bridge is rotatably connected with the ship body, and the telescopic bridge can be lengthened and shortened;

the mud suction pump is arranged on the telescopic bridge;

the reamer is arranged at the other end of the telescopic bridge;

one end of the mud suction pipe is communicated with the mud suction channel of the reamer, and the other end of the mud suction pipe is communicated with the inlet of the mud suction pump;

and one end of the sludge discharge pipe is communicated with the outlet of the sludge suction pump.

Optionally, the reamer includes:

the shell, one end of the said shell has dredging cavity, the said suction channel communicates with said dredging cavity;

the rotating shaft is arranged in the dredging cavity;

the cutter heads are arranged on the rotating shaft at intervals along the length direction of the rotating shaft, and the cutter heads are spiral;

and the fourth driving piece is connected with the rotating shaft and used for driving the rotating shaft to rotate.

Optionally, the excavation conveying system further includes:

the winch comprises a winding wheel, the winding wheel is rotationally connected with the ship body, and the mud discharging pipe is wound on the winding wheel.

Optionally, the telescopic dredging vessel for water depth variation further comprises a trolley system, the trolley system comprising:

the propelling trolley is in sliding connection with the ship body, and one end of the telescopic bridge is rotatably connected with the propelling trolley;

and the fifth driving piece is arranged on the ship body and connected with the propulsion trolley and used for driving the propulsion trolley to slide.

The beneficial effects of the invention are as follows:

the invention provides a telescopic dredging ship for water depth change, which comprises a ship body and a propulsion displacement system, wherein the propulsion displacement system comprises a telescopic walking frame, walking wheels and a first driving piece. When the ship body does not need to move, the telescopic walking frame stretches to insert the walking wheels into the river bottom, and at the moment, the telescopic walking frame and the walking wheels jointly play a role of positioning piles; when the ship body needs to be moved, the telescopic walking frame is shortened, the walking wheels are pulled out from the river bottom, and the first driving piece is started to enable the walking wheels to rotate, so that the movement of the ship body can be realized. Compared with the prior art that the cutter suction dredger realizes the movement of the ship body by exchanging the replacement piles, on one hand, the space occupied by the telescopic travelling frame and the travelling wheels is smaller, so that the telescopic dredging ship for water depth change can be used for construction conditions with limited construction space, and has higher universality; on the other hand, the operation is simple, the time for realizing the movement of the ship body is short, and the dredging efficiency is improved.

Drawings

FIG. 1 is a schematic view of a telescopic dredging ship for water depth change according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a telescopic dredging ship for water depth change according to the second embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a top view of a telescoping dredger for varying water depths according to one embodiment of the present invention (showing a fifth driving member);

fig. 5 is a schematic structural diagram of a reamer according to an embodiment of the present invention;

FIG. 6 is a top view II (illustrating winch) of the telescopic dredging vessel for water depth change according to the embodiment of the present invention;

fig. 7 is a partial enlarged view of fig. 2 at B.

In the figure:

100. a hull;

200. a propulsion displacement system; 210. a walking frame; 211. a first bracket; 212. a second bracket; 213. a second driving member; 220. a walking wheel; 230. a water jet propeller;

300. a buffer system; 310. a buffer platform; 320. a lifting mechanism;

400. excavating and conveying systems; 410. a telescopic bridge; 411. a first bridge; 412. a second bridge; 413. a sixth driving member; 420. a suction pump; 430. a reamer; 431. a housing; 432. a dredging cavity; 433. a suction channel; 434. a rotating shaft; 435. a cutter head; 440. a suction pipe; 450. a mud pipe; 460. a winch;

500. a trolley system; 510. propelling the trolley; 520. a fifth driving member;

600. mud surface.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

The stern of the traditional cutter suction dredger is provided with two steel columns, one of which is inserted into the river bottom to serve as a positioning pile during dredging, and the dredger is pulled by an anchor cable to swing left and right by taking the positioning pile as the center. When moving forward, like walking with two legs, the piles are alternately replaced by another steel column, and the reamer dredges in a fan shape. The traditional cutter suction dredger occupies larger space when walking, and cannot walk under the construction working condition of smaller construction space, so the cutter suction dredger is not suitable for the construction working condition of limited construction space.

Based on the above problems, the embodiment provides a telescopic dredging ship for water depth change, which can be used for construction conditions with smaller construction space and has higher universality.

Specifically, as shown in fig. 1 and 2, the telescopic dredging vessel for water depth variation comprises a hull 100 and a propulsion and displacement system 200, wherein the propulsion and displacement system 200 is used for pushing the hull 100 to move, the propulsion and displacement system 200 comprises a telescopic walking frame 210, a walking wheel 220 and a first driving member (not shown in the drawings), wherein one end of the telescopic walking frame 210 is rotatably connected with the hull 100, and the telescopic walking frame 210 can be lengthened and shortened. The traveling wheel 220 is disposed at the other end of the traveling frame 210. The first driving member is connected to the road wheel 220 for driving the road wheel 220 to rotate. By arranging one end of the telescopic walking frame 210 to be rotatably connected with the hull 100, when the telescopic dredging ship for water depth change moves from a shallow water area to a deep water area, the telescopic walking frame 210 can rotate relative to the hull 100 under the action of gravity, so that the walking wheel 220 is always contacted with the mud surface 600 of the river bottom to adapt to different water depths; when the telescopic dredging ship for water depth change moves from a deep water area to a shallow water area, the riverbed of the shallow water area can push the telescopic travelling frame 210 to rotate, so that the travelling wheel 220 is always in contact with the mud surface 600 of the river bottom, and the application range of the telescopic dredging ship for water depth change is improved. When the hull 100 does not need to move, the telescopic walking frame 210 stretches to insert the walking wheels 220 into the river bottom, and at the moment, the telescopic walking frame 210 and the walking wheels 220 jointly play a role of positioning piles, so that the hull 100 can be reliably fixed; when the hull 100 needs to be moved, the telescopic travelling frame 210 is shortened, the travelling wheel 220 is pulled out from the river bottom, and the first driving piece is started to rotate the travelling wheel 220, so that the movement of the hull 100 can be realized. Compared with the prior art that the cutter suction dredger realizes the movement of the ship body 100 by exchanging piles, on one hand, the space occupied by the telescopic travelling frame 210 and the travelling wheels 220 is smaller, so that the telescopic dredging ship for water depth change can be used for construction conditions with limited construction space, and has higher universality; on the other hand, the operation is simple, the time for realizing the movement of the ship body 100 is short, and the dredging efficiency is improved.

Preferably, the travelling wheel 220 is provided with a barb, the barb is used for grabbing the ground, and by arranging the barb, the friction force between the travelling wheel 220 and the mud surface 600 of the river bottom can be improved, so that the connection strength between the travelling wheel 220 and the mud surface 600 of the river bottom can be improved when the ship body 100 is fixed, and the position stability of the telescopic dredging ship for water depth change during dredging can be improved; when the hull 100 moves, the traveling wheels 220 can be ensured to reliably travel, and the reliability of the movement of the hull 100 is improved. Alternatively, the barb can be arc-shaped or claw-shaped, and the barb can be arranged according to actual needs.

Alternatively, the road wheel 220 may be a blade-type road wheel and the first driving member may be, but is not limited to, a motor.

Alternatively, the telescopic walking frame 210 may be lifted by a wire rope of the bridge winch 460, and when the telescopic walking frame 210 is horizontally placed, the walking wheel 220 may be used as a propulsion device for the hull 100, and when the mud surface 600 is lowered, the walking wheel 220 may provide power for the hull 100.

Further, with continued reference to fig. 1 and 2, the telescopic dredging vessel for water depth change further includes a buffer system 300, the buffer system 300 includes a buffer platform 310 and a lifting mechanism 320, the lifting mechanism 320 is disposed on the hull 100, the lifting mechanism 320 is connected to the buffer platform 310 and is used for driving the buffer platform 310 to lift, and the buffer platform 310 is used for abutting against a pile foundation of a wharf to fix the hull 100. When the telescopic dredging ship for the water depth change is constructed near a wharf, if large sea waves are encountered, the impact on the ship body 100 is large, the ship body 100 is easy to push to move, the buffer system 300 is arranged, the buffer platform 310 is pressed on a pile foundation (or a fixing frame of the wharf), the ship body 100 can be fixed between the pile foundation and the water surface, the impact of the sea waves on the ship body 100 is buffered, and the construction reliability of the telescopic dredging ship for the water depth change is further ensured. By arranging the buffer system 300, the telescopic dredging ship for water depth change can work more reliably under the construction working condition that the upper space is limited. Alternatively, lift mechanism 320 is optionally, but not limited to, a scissor mechanism.

Alternatively, in the present embodiment, the size of the buffer deck 310 is 2000mmX800mm and the lifting distance of the lifting mechanism 320 is 25000mm. In other embodiments, the size of the buffer platform 310 and the lifting distance of the lifting mechanism 320 may be set to be different, and may be set according to actual needs.

Alternatively, as shown in fig. 3, in the present embodiment, the telescopic walking frame 210 includes a first bracket 211, a second bracket 212, and a second driving member 213, where a sliding cavity is disposed in the first bracket 211, and one end of the second bracket 212 is slidably connected to the sliding cavity. The second driving piece 213 is disposed on the first bracket 211, and an output end of the second driving piece 213 is connected with the second bracket 212, so as to drive the second bracket 212 to slide, so that the second bracket 212 extends or retracts from the first bracket 211, and further, the extension and shortening of the telescopic walking frame 210 are realized, and the telescopic walking frame has a simple structure, is convenient to operate, and has lower cost. The second driving member 213 is optionally but not limited to a cylinder. Preferably, the telescopic walking frame 210 may further include a third bracket, a fourth bracket, etc. for implementing multi-stage adjustment of the telescopic walking frame 210, and increasing a length adjustment range of the telescopic walking frame 210, so as to be suitable for a construction area with a greater depth of water.

Optionally, in another embodiment, the telescopic walking frame 210 includes a first bracket 211, a second bracket 212, and a telescopic adjustment mechanism, where a sliding cavity is disposed in the first bracket 211, and one end of the second bracket 212 is slidably connected to the sliding cavity. The telescopic adjusting mechanism comprises a third driving piece, a screw and a nut, wherein the third driving piece is arranged on the first bracket 211, the output end of the third driving piece is connected with the screw and used for driving the screw to rotate, the nut is in threaded connection with the screw, the second bracket 212 is connected with the nut, the rotation of the third driving piece is converted into the sliding of the second bracket 212 through the screw-nut mechanism, and the structure is favorable for improving the sliding stability of the second bracket 212. The third drive member is optionally but not limited to a motor. Of course, in other embodiments, the structure for realizing the extension and retraction of the extension and retraction walking frame 210 may be other, and may be set according to actual needs.

Preferably, as shown in fig. 4, the propulsion displacement system 200 further includes water jet propellers 230, where the water jet propellers 230 are symmetrically disposed on two sides of the central axis a of the hull 100, for example, two water jet propellers 230 may be disposed, and two water jet propellers 230 are symmetrically disposed on two sides of the central axis a of the hull 100; or the four water spraying propellers 230 are arranged, the four water spraying propellers 230 are divided into two pairs, the two pairs of water spraying propellers 230 are symmetrically arranged on two sides of the central axis a of the ship body 100 respectively, and the angle of the water spraying propellers 230 relative to the ship body 100 is adjustable. The angle of the hull 100 is adjusted by using the reverse thrust by adjusting the water spray direction of the water spray propeller 230, so that the moving direction of the hull 100 can be conveniently adjusted as required when the hull 100 moves; when the hull 100 is fixed, the direction of the hull 100 can be adjusted, which is beneficial to expanding the dredging range. The hull 100 can travel along a straight line by symmetrically disposing the water jet propulsion devices 230 at both sides of the central axis a of the hull 100. Since the water jet propulsion device 230 is the prior art, the structure thereof will not be described in detail.

Further, with continued reference to fig. 1, 2 and 5, the aforementioned telescopic dredging vessel for varying the depth of water further comprises a dredging and transporting system 400 for dredging out the mud at the river bottom, wherein the dredging and transporting system 400 comprises a telescopic bridge 410, a mud pump 420, a reamer 430, a mud pipe 440 and a mud pipe 450, wherein one end of the telescopic bridge is rotatably connected to the hull 100, and the telescopic bridge 410 is capable of being extended and shortened. A suction pump 420 is provided on the telescopic bridge 410 for providing power to pump the dredged mud away. The reamer 430 is disposed at the other end of the telescopic bridge 410 for dredging; one end of the suction pipe 440 is communicated with the suction channel 433 of the reamer 430, the other end is communicated with the inlet of the suction pump 420, one end of the discharge pipe 450 is communicated with the outlet of the suction pump 420, and the other end of the discharge pipe 450 may extend to a mud storage compartment or a shore in the hull 100 to convey the dredged mud away. When the excavating and conveying system 400 works, the reamer 430 is lowered to the mud surface 600 through the rotation of the telescopic bridge frame 410, mud at the bottom of the river is excavated through the reamer 430 to form mud, and the mud pump 420 pumps the mud excavated by the reamer 430 into the mud pipe 450 through the mud pipe 440 and conveys the mud away through the mud pipe 450. Through setting up the extension and shortening of telescopic crane span structure 410, when the depth of water changed, can adjust the length of telescopic crane span structure 410 according to the depth of water to guarantee the reliability of dredging, make above-mentioned a telescopic dredging ship for depth of water changes be applicable to the construction operating mode that the depth of water has great change, the universality is higher.

Optionally, with continued reference to fig. 5, the reamer 430 includes a housing 431, a shaft 434, a fourth driving member (not shown) and a plurality of cutters 435, wherein one end of the housing 431 is provided with a mud-sucking cavity 432, and the mud-sucking channel 433 communicates with the mud-sucking cavity 432. The rotating shaft 434 is disposed in the dredging cavity 432, the plurality of tool bits 435 are disposed on the rotating shaft 434 along the length direction of the rotating shaft 434 at intervals, and the plurality of tool bits 435 are spiral. The fourth driving member is connected to the rotating shaft 434 for driving the rotating shaft 434 to rotate. When dredging, the fourth driving member drives the rotating shaft 434 to rotate, the rotating shaft 434 rotates to enable the tool bit 435 to dredge out the sludge, and the tool bit 435 is arranged in a spiral shape, so that the dredged sludge is conveniently conveyed into the sludge suction channel 433, and the reliability of the dredging and conveying system 400 in sludge conveying operation is improved. The fourth drive member is optionally but not limited to a motor. Preferably, in the present embodiment, the plurality of cutter heads 435 are divided into two groups, and the rotation directions of the cutter heads 435 in the two groups are opposite, so as to form a double-spiral structure, and the dredging effect is better.

Further, as shown in fig. 6, the excavating and conveying system 400 further comprises a winch 460, the winch 460 comprises a winding wheel, the winding wheel is rotationally connected with the ship body 100, the mud pipe 450 is wound on the winding wheel, the length of the mud pipe 450 can be adjusted according to the water depth by arranging the winding wheel, and meanwhile unnecessary waste caused by overlong placement of the mud pipe 450 at the river bottom can be avoided. Preferably, the mud pipe 450 can be supported on the telescopic bridge 410, so that the telescopic bridge 410 can support the mud pipe 450, which is also beneficial to improving the compactness of the excavating and conveying system 400.

Preferably, with continued reference to fig. 4 and 6, the aforementioned telescopic dredging vessel for water depth variation further comprises a trolley system 500 for adjusting the position of the dredging transporting system 400, in particular, the trolley system 500 comprises a propulsion trolley 510 and a fifth driving member 520, wherein the propulsion trolley 510 is slidingly connected with the hull 100, and one end of the telescopic bridge 410 is rotatably connected with the propulsion trolley 510; a fifth driving member 520 is provided on the hull 100, and the fifth driving member 520 is connected to the push cart 510 for driving the push cart 510 to slide. The fifth driver 520 is optionally but not limited to a cylinder. In this embodiment, the propulsion trolley 510 slides along the central axis of the hull 100. In other embodiments, the sliding direction of the pushing trolley 510 may be set to be different according to the actual needs, and the pushing trolley 510 is pushed to slide by the fifth driving member 520, and the pushing trolley 510 slides to drive the telescopic bridge 410 connected with the pushing trolley to move, so as to change the position of the dredger 430, and improve the dredger dredging range of the telescopic dredging vessel for water depth change.

Alternatively, the propulsion trolley 510 may be slidably connected to the hull 100 through wheels, or may be slidably connected to the hull 100 through a structure of a sliding rail and a sliding block, and may be set according to actual needs.

Alternatively, as shown in fig. 7, the telescopic bridge 410 includes a first bridge 411, a second bridge 412, and a sixth driving member 413, where the first bridge 411 is slidably connected to the second bridge 412, the sixth driving member 413 is disposed on the first bridge 411, and an output end of the sixth driving member 413 is connected to the second bridge 412, so as to drive the second bridge 412 to slide, thereby implementing extension and shortening of the telescopic bridge 410. The sixth driving member 413 is optional but not limited to an air cylinder, and has a simple structure and convenient operation. Of course, the telescopic bridge 410 may further include a third bridge, a fourth bridge, etc. to increase the length adjustment range of the telescopic bridge 410, and may be set according to actual needs.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. A telescopic dredging vessel for water depth variations, comprising a hull (100) and a propulsion displacement system (200), the propulsion displacement system (200) comprising:

the telescopic walking frame (210), one end of the telescopic walking frame (210) is rotatably connected with the ship body (100), and the telescopic walking frame (210) can be lengthened and shortened;

a traveling wheel (220), wherein the traveling wheel (220) is arranged at the other end of the traveling frame (210);

the first driving piece is connected with the travelling wheel (220) and used for driving the travelling wheel (220) to rotate.

2. The telescopic dredging vessel for water depth variation according to claim 1, wherein the travelling wheel (220) is provided with barbs for gripping the ground.

3. The telescopic dredging vessel for water depth variation according to claim 1, wherein the telescopic travelling frame (210) comprises:

a first bracket (211), wherein a sliding cavity is arranged in the first bracket (211);

a second bracket (212), wherein one end of the second bracket (212) is connected with the sliding cavity in a sliding way;

the second driving piece (213), the second driving piece (213) is arranged on the first support (211), and the output end of the second driving piece (213) is connected with the second support (212) and is used for driving the second support (212) to slide so that the second support (212) stretches out of or retracts into the first support (211).

4. The telescopic dredging vessel for water depth variation according to claim 1, wherein the telescopic travelling frame (210) comprises:

a first bracket (211), wherein a sliding cavity is arranged in the first bracket (211);

a second bracket (212), wherein one end of the second bracket (212) is connected with the sliding cavity in a sliding way;

the telescopic adjusting mechanism comprises a third driving piece, a screw and a nut, wherein the third driving piece is arranged on the first bracket (211), the output end of the third driving piece is connected with the screw and used for driving the screw to rotate, the nut is in threaded connection with the screw, and the second bracket (212) is connected with the nut.

5. The telescopic dredging vessel for water depth variation according to claim 1, wherein the propulsion displacement system (200) further comprises water jet propellers (230), the water jet propellers (230) are symmetrically arranged at both sides of the central axis of the hull (100), and the angle of the water jet propellers (230) relative to the hull (100) is adjustable.

6. The telescopic dredging vessel for water depth variations according to claim 1, further comprising:

the buffering system (300), the buffering system (300) includes buffering platform (310) and elevating system (320), elevating system (320) set up on hull (100), elevating system (320) with buffering platform (310) link to each other, are used for the drive buffering platform (310) go up and down, buffering platform (310) are used for with the pile foundation butt of pier, in order to fix hull (100).

7. The telescopic dredging vessel for water depth variations according to any one of claims 1-6, further comprising an dredging transportation system (400), the dredging transportation system (400) comprising:

a telescopic bridge (410), wherein one end of the telescopic bridge (410) is rotatably connected to the hull (100), and the telescopic bridge (410) can be lengthened and shortened;

a suction pump (420), the suction pump (420) being arranged on the telescopic bridge (410);

a reamer (430), wherein the reamer (430) is arranged at the other end of the telescopic bridge (410);

a suction pipe (440), wherein one end of the suction pipe (440) is communicated with a suction channel (433) of the reamer (430), and the other end of the suction pipe is communicated with an inlet of the suction pump (420);

and one end of the mud discharging pipe (450) is communicated with the outlet of the mud sucking pump (420).

8. The telescopic dredging vessel for a water depth variation according to claim 7, wherein the reamer (430) comprises:

a casing (431), wherein a dredging cavity (432) is arranged at one end of the casing (431), and the dredging channel (433) is communicated with the dredging cavity (432);

a rotating shaft (434), the rotating shaft (434) being disposed within the dredging chamber (432);

the cutter heads (435), the cutter heads (435) are arranged on the rotating shaft (434) at intervals along the length direction of the rotating shaft (434), and the cutter heads (435) are in a spiral shape;

and the fourth driving piece is connected with the rotating shaft (434) and is used for driving the rotating shaft (434) to rotate.

9. The telescoping dredging vessel for water depth variations as claimed in claim 7, wherein the dredging transportation system (400) further comprises:

winch (460), winch (460) include the reel, the reel with hull (100) rotate to be connected, mud pipe (450) are convoluteed on the reel.

10. The telescopic dredging vessel for water depth variations according to claim 7, further comprising a trolley system (500), the trolley system (500) comprising:

the propelling trolley (510), the propelling trolley (510) is in sliding connection with the ship body (100), and one end of the telescopic bridge frame (410) is rotatably connected with the propelling trolley (510);

and the fifth driving piece (520), the fifth driving piece (520) is arranged on the ship body (100), and the fifth driving piece (520) is connected with the propulsion trolley (510) and is used for driving the propulsion trolley (510) to slide.