CN112177083A

CN112177083A - Movable river sludge dredging device

Info

Publication number: CN112177083A
Application number: CN202011076563.0A
Authority: CN
Inventors: 徐湛元
Original assignee: Guangdong Green Run Environmental Technology Co ltd
Current assignee: Guangdong Green Run Environmental Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-01-05
Anticipated expiration: 2040-10-10
Also published as: CN112177083B

Abstract

The invention discloses a mobile river sludge dredging device, belongs to the technical field of river sludge dredging, solves the problem of poor sludge dredging effect of the conventional river sludge dredging device, and has the technical key points that: including removing the hull, it removes on the river to remove the hull, the cylinder starts, it is no longer spacing to shrink, first motor starts, make the protection casing whereabouts, the two-shaft motor of second starts, make drill bit and the broken sword of second remove about and carry out the desilting operation, first two-shaft motor starts, order about the rotatory desilting operation that carries out of the broken sword of the epaxial second of third commentaries on classics, first two-shaft motor drive spline housing on the integral key shaft is rotatory, make incomplete gear rotatory, realize the reciprocal desilting operation of drill bit and the broken sword of second ascending orientation from top to bottom, the second pumper starts, extract mud and get into the agitator tank in, the second motor starts, drive first broken sword and stir the breakage, it carries out subsequent collection and processing to be got by first pumper, it dredges effectual advantage to have mud.

Description

Movable river sludge dredging device

Technical Field

The invention relates to the field of river sludge dredging, in particular to a mobile river sludge dredging device.

Background

River sludge dredging generally refers to harnessing river courses, and belongs to hydraulic engineering. The silt deposited at the river bottom is blown and stirred into turbid water through mechanical equipment and flows away along with river water, so that the dredging function is achieved. River channel siltation has increasingly influenced the normal performance of various functions such as flood control, waterlogging drainage, irrigation, water supply, navigation and the like, and river channel dredging engineering is carried out for recovering the normal functions of the river channel. The river course becomes deep and wide through treatment, the river water becomes clear, the production conditions and the living environment of the masses are obviously improved, and the aims of 'clear water, smooth river, green bank and beautiful landscape' are achieved.

In the traditional sludge dredging process, loose bottom mud is generally required to be changed into slurry by devices such as a reamer and a water gun, but the loose bottom mud is easy to diffuse along with the flowing of water, the diffusion of the bottom mud with pollutants in the water can enlarge the pollution range, the diffusion of the loose bottom mud can increase the turbidity degree of a river channel, the treatment difficulty of rivers and lakes is increased, and the traditional river channel sludge dredging device has the defect of poor sludge dredging effect and is difficult to popularize and apply.

Therefore, it is necessary to provide a mobile river sludge dredging apparatus, which aims to solve the above problems.

Disclosure of Invention

In view of the defects in the prior art, an embodiment of the present invention provides a mobile river sludge dredging apparatus, so as to solve the problems in the background art.

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

the utility model provides a device is dredged to portable river mud, includes and removes the hull, the bottom of removal hull is provided with the protection casing of being convenient for the protection, be provided with the broken subassembly of drill bit and the broken cutter unit spare of being convenient for the desilting in the protection casing, the broken subassembly of drill bit includes drill bit and the broken sword of second, drill bit and the broken sword of second are connected with first drive assembly, first drive assembly includes second double-shaft motor, screw rod cover and second screw rod, screw rod cover threaded connection is on the second screw rod, broken cutter unit spare includes broken sword of second and third pivot, broken sword of second and third pivot are connected with second drive assembly, second drive assembly includes first double-shaft motor, the top of first double-shaft motor is connected with first lifting unit, first lifting unit spare fixed connection is in the fixed incasement of second, first lifting unit spare includes the spline housing, The device comprises a spline shaft, an incomplete gear, a lifting block and a spring, wherein the incomplete gear is rotatably connected inside the lifting block, limiting plate components are arranged on two sides of a protective cover, each limiting plate component comprises an air cylinder and a limiting plate, two sides of a second fixed box are connected with a second lifting component through a driving block and a sliding block, each second lifting component comprises a first motor, a first screw and a sliding rod, a first fixed box is arranged above the corresponding second fixed box, the first fixed box is fixedly connected in a movable ship body, a second pump convenient for pumping sludge is arranged in the first fixed box, the second pump is communicated with a stirring box through a second pipeline, a stirring and crushing component is arranged in the stirring box and comprises a first rotating shaft, a first crushing cutter, a second rotating shaft and a second motor, a filter screen convenient for filtering is arranged above the first crushing cutter, the agitator tank is connected with a first pump convenient for pumping sludge through a first pipeline.

As a further scheme of the invention, the second crushing cutter and the drill bit are both fixedly connected to an output shaft at one end of a second double-shaft motor, the second double-shaft motor is fixedly connected to a third fixed box, an output shaft at the other end of the second double-shaft motor is fixedly connected with a fourth bevel gear, the fourth bevel gear is meshed with a third bevel gear, the third bevel gear is fixedly connected to a screw rod sleeve, the screw rod sleeve is rotatably connected to the third fixed box through a bearing, the second screw rod is fixedly connected to the inside of the protective cover, and the second double-shaft motor is a positive and negative double-shaft motor.

As a further scheme of the invention, a plurality of second crushing cutters are fixedly connected to the third rotating shaft, one end of the third rotating shaft is rotatably connected to the inside of the protective cover, the other end of the third rotating shaft is fixedly connected with a fifth bevel gear, the fifth bevel gear is meshed with a sixth bevel gear, the sixth bevel gear is fixedly connected with an output shaft at one end of a first double-shaft motor, the first double-shaft motor is fixedly connected to the inside of the protective cover through a protective box, and a fourth pipeline convenient for sludge extraction is fixedly connected to the protective cover.

As a further scheme of the invention, an output shaft at the other end of the first double-shaft motor is fixedly connected with a spline shaft, the spline shaft is slidably connected in a spline sleeve, the spline sleeve is rotatably connected in a second fixed box through a bearing, the outer side of the spline sleeve is fixedly connected with a first bevel gear, and the first bevel gear is meshed with a second bevel gear.

As a further scheme of the present invention, the second bevel gear is fixedly connected to one end of a third rotating shaft, the third rotating shaft is rotatably connected to the inside of a second fixed box, the other end of the third rotating shaft is fixedly connected to an incomplete gear, the inner side of the lifting block is fixedly connected to a plurality of teeth engaged with the incomplete gear, the lifting block is slidably connected to the inside of the second fixed box, a spring is fixedly connected to a joint of the lifting block and the second fixed box, an elastic hose is arranged in the second fixed box, and the elastic hose is fixedly connected to a fourth pipeline.

As a further scheme of the invention, one end of the second pump is fixedly connected with a third pipeline, the third pipeline is communicated with the elastic hose, the first rotating shaft and the second rotating shaft are both fixedly connected with a plurality of first crushing cutters convenient for stirring and crushing, the first rotating shaft is fixedly connected with an output shaft of a second motor, the first rotating shaft and the second rotating shaft penetrate through the outer side of the stirring box and are rotatably connected with a synchronous belt, and the second motor is fixedly connected to the stirring box.

As a further scheme of the present invention, the first motor is fixedly connected to the outer side of the first fixed box through the protection box, the first screw is fixedly connected to an output shaft of the first motor, the first screw is rotatably connected to the inside of the movable hull, the first screw is in threaded connection with a driving block, the driving block and the sliding block are both fixedly connected to the outer side of the second fixed box, the sliding block is slidably connected to the sliding rod, and the sliding rod is fixedly connected to the inside of the movable hull through the mounting plate.

As a further scheme of the invention, grooves for avoiding position limiting plates are formed on two sides of the protective cover, the limiting plates are fixedly connected with piston rods of air cylinders, and the air cylinders are fixedly connected to the bottom of the movable ship body through protective boxes.

In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:

the invention moves a ship body above a river by moving, an air cylinder is started to drive a limiting plate to contract, so that two sides of a protective cover are not limited any more, a first motor is started to drive a first screw rod to rotate, a second fixed box drives the protective cover to fall under the guiding action of a sliding rod, when the bottom of the protective cover is contacted with the bottom of the river, a second double-shaft motor is started to drive a drill bit and a second crushing knife to stir and crush sludge at the river bottom, the second double-shaft motor drives a fourth conical gear to rotate simultaneously, so that a screw rod sleeve rotates, under the relationship of threaded connection, a third fixed box is driven to drive the drill bit and the second crushing knife to move left and right on the second screw rod, the reciprocating dredging operation on the river bottom sludge line is realized, meanwhile, the first double-shaft motor is started to drive a sixth conical gear to rotate, under the relationship of gear meshing, the second crushing knife on a third rotating shaft is driven to rotate, meanwhile, the spline sleeve on the spline shaft is driven to rotate by the first double-shaft motor, so that the incomplete gear on the third rotating shaft is driven to rotate, the lifting block is driven to drive the protective cover to ascend under the meshing relationship of the gears, when the incomplete gear rotates to a gearless area, the protective cover is driven to descend under the action of gravity and the elastic force of the spring, the reciprocating dredging operation in the up-and-down direction of the drill bit and the second crushing cutter is realized, the second pump is started, the crushed sludge is extracted by the fourth pipeline, the elastic hose and the third pipeline and enters the stirring tank, the second motor is started, the first crushing cutters on the first rotating shaft and the second rotating shaft are driven to stir and crush, the crushed stone and the like of the sludge can pass through the filter screen more easily, the sludge is finally extracted by the first pump for subsequent collection and treatment, and the sludge dredging effect is good.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the invention.

Fig. 2 is a schematic view of the internal structure of the first fixing box in the embodiment of the invention.

Fig. 3 is a schematic view of the internal structure of the second fixing case and the protection cover in the embodiment of the invention.

FIG. 4 is an enlarged view of A in the example of the present invention.

Fig. 5 is a schematic view of the internal structure of the lifting block in the embodiment of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of the shield in the embodiment of the invention.

FIG. 7 is a schematic axial structure view of the spline shaft in the embodiment of the invention.

Reference numerals: 1-moving ship body, 2-first pump, 3-first pipeline, 4-first motor, 5-first screw, 6-driving block, 7-cylinder, 8-limiting plate, 9-sliding block, 10-sliding rod, 11-first fixed box, 12-second fixed box, 13-protective cover, 14-stirring box, 15-filter screen, 16-second motor, 17-first rotating shaft, 18-first crushing knife, 19-second rotating shaft, 20-synchronous belt, 21-second pump, 22-second pipeline, 23-third pipeline, 24-elastic hose, 25-spline sleeve, 26-spline shaft, 27-first conical gear, 28-second conical gear, 29-third rotating shaft, 30-incomplete gear, 31-lifting block, 32-spring, 33-first double-shaft motor, 34-second screw, 35-screw sleeve, 36-third bevel gear, 37-fourth bevel gear, 38-second double-shaft motor, 39-drill, 40-second crushing cutter, 41-third rotating shaft, 42-fifth bevel gear, 43-sixth bevel gear, 44-third fixed box and 45-fourth pipeline.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

Example 1

Referring to fig. 1 to 7, a mobile river sludge dredging device comprises a mobile hull 1, and further comprises a first fixed box 11, a second fixed box 12 and a protective cover 13, wherein the bottom of the mobile hull 1 is provided with the protective cover 13 convenient for protection, a drill bit crushing assembly and a crushing cutter assembly convenient for dredging are arranged in the protective cover 13, the drill bit crushing assembly comprises a drill bit 39 and a second crushing cutter 40, the drill bit 39 and the second crushing cutter 40 are connected with a first driving assembly, the first driving assembly comprises a second double-shaft motor 38, a screw sleeve 35 and a second screw 34, the screw sleeve 35 is in threaded connection with the second screw 34, the crushing cutter assembly comprises a second crushing cutter 40 and a third rotating shaft 41, the second crushing cutter 40 and the third rotating shaft 41 are connected with a second driving assembly, the second driving assembly comprises a first double-shaft motor 33, the top of first double-shaft motor 33 is connected with first elevating assembly, first elevating assembly fixed connection is in the fixed case 12 of second, first elevating assembly includes spline housing 25, integral key shaft 26, incomplete gear 30, elevator 31 and spring 32, incomplete gear 30 rotates and connects in the inside of elevator 31, the both sides of protection casing 13 are provided with the limiting plate subassembly, the limiting plate subassembly includes cylinder 7 and limiting plate 8, the both sides of the fixed case 12 of second are connected with second elevating assembly through driving piece 6 and slider 9, second elevating assembly includes first motor 4, first screw rod 5 and slide bar 10, the top of the fixed case 12 of second is provided with first fixed case 11, first fixed case 11 fixed connection is in removing hull 1.

Further, the second crushing cutter 40 and the drill bit 39 are both fixedly connected to an output shaft at one end of a second double-shaft motor 38, the second double-shaft motor 38 is fixedly connected to a third fixing box 44, an output shaft at the other end of the second double-shaft motor 38 is fixedly connected to a fourth bevel gear 37, the fourth bevel gear 37 is meshed with a third bevel gear 36, the third bevel gear 36 is fixedly connected to a screw sleeve 35, the screw sleeve 35 is rotatably connected to the third fixing box 44 through a bearing, the second screw 34 is fixedly connected to the inside of the protective cover 13, and the second double-shaft motor 38 is a forward and reverse double-shaft motor.

Further, a plurality of second crushing knives 40 are fixedly connected to the third rotating shaft 41, one end of the third rotating shaft 41 is rotatably connected to the inside of the protective cover 13, a fifth bevel gear 42 is fixedly connected to the other end of the third rotating shaft 41, the fifth bevel gear 42 is meshed with a sixth bevel gear 43, an output shaft at one end of a first double-shaft motor 33 is fixedly connected to the sixth bevel gear 43, the first double-shaft motor 33 is fixedly connected to the inside of the protective cover 13 through a protective box, and a fourth pipeline 45 for conveniently extracting sludge is fixedly connected to the protective cover 13.

Further, an output shaft at the other end of the first double-shaft motor 33 is fixedly connected with a spline shaft 26, the spline shaft 26 is slidably connected in a spline housing 25, the spline housing 25 is rotatably connected in the second fixed box 12 through a bearing, the outer side of the spline housing 25 is fixedly connected with a first bevel gear 27, and the first bevel gear 27 is meshed with a second bevel gear 28.

Further, the one end of second bevel gear 28 fixedly connected with third pivot 29, third pivot 29 rotates and connects in the fixed case 12 of second, the other end fixedly connected with incomplete gear 30 of third pivot 29, the inboard fixedly connected with of elevator 31 a plurality of teeth with incomplete gear 30 engaged with, elevator 31 sliding connection is in the fixed case 12 of second, the junction fixedly connected with spring 32 of elevator 31 and the fixed case 12 of second, be provided with flexible hose 24 in the fixed case 12 of second, flexible hose 24 fixedly connected with fourth pipeline 45.

Further, first motor 4 passes through guard box fixed connection in the outside of first fixed case 11, the output shaft of first motor 4 of 5 fixedly connected with of first screw rod, first screw rod 5 rotates to be connected in removing hull 1, threaded connection has drive block 6 on the first screw rod 5, drive block 6 and the equal fixed connection in the outside of second fixed case 12 of slider 9, slider 9 sliding connection is on slide bar 10, slide bar 10 passes through mounting panel fixed connection in removing hull 1.

Further, the both sides of protection casing 13 are seted up and are used for keeping away the recess of a limiting plate 8, limiting plate 8 fixedly connected with cylinder 7's piston rod, cylinder 7 passes through guard box fixed connection in the bottom of removing hull 1.

Preferably, the cylinder 7 is started by moving the ship body 1 above the river to drive the limit plate 8 to contract, so that the two sides of the protective cover 13 are not limited any more.

Preferably, the first motor 4 is started to drive the first screw 5 to rotate, the second fixed box 12 drives the protective cover 13 to fall under the guiding action of the slide bar 10, and when the bottom of the protective cover 13 is contacted with the bottom of a river, the second double-shaft motor 38 is started to drive the drill bit 39 and the second crushing knife 40 to rotate to stir and crush the sludge at the bottom of the river.

Preferably, the second double-shaft motor 38 drives the fourth bevel gear 37 to rotate, so that the screw sleeve 35 rotates, and under the threaded connection, the third fixed box 44 is driven to drive the drill bit 39 and the second crushing knife 40 to move left and right on the second screw 34, so as to realize the linear reciprocating dredging operation of the river bottom sludge.

Preferably, the first double-shaft motor 33 is started to drive the sixth bevel gear 43 to rotate, and the second crushing cutter 40 on the third rotating shaft 41 is driven to rotate to perform the dredging operation under the gear meshing relationship.

Preferably, the first double-shaft motor 33 drives the spline housing 25 on the spline shaft 26 to rotate, so as to drive the incomplete gear 30 on the third rotating shaft 29 to rotate, drive the lifting block 31 to drive the protective cover 13 to lift in a gear meshing relationship, and drive the protective cover 13 to descend under the action of gravity and the elastic force of the spring 32 when the incomplete gear 30 rotates to a gearless area, so as to realize reciprocating desilting operation of the drill bit 39 and the second crushing cutter 40 in the up-and-down direction.

Example 2

Referring to fig. 1 to 7, a mobile river sludge dredging device includes a mobile hull 1, and further includes a first fixed tank 11, a second fixed tank 12, and a protective cover 13, a second pump 21 convenient for pumping sludge is disposed in the first fixed tank 11, the second pump 21 is communicated with a stirring tank 14 through a second pipeline 22, a stirring and crushing assembly is disposed in the stirring tank 14, the stirring and crushing assembly includes a first rotating shaft 17, a first crushing knife 18, a second rotating shaft 19, and a second motor 16, a filter screen 15 convenient for filtering is disposed above the first crushing knife 18, and the stirring tank 14 is connected with a first pump 2 convenient for pumping sludge through a first pipeline 3.

Further, one end fixedly connected with third pipeline 23 of second suction pump 21, third pipeline 23 is linked together with elastic hose 24, equal fixedly connected with a plurality of broken first sword 18 of being convenient for stir the breakage on first pivot 17 and the second pivot 19, first pivot 17 fixedly connected with second motor 16's output shaft, first pivot 17 and second pivot 19 run through the outside department rotation that agitator tank 14 is connected with hold-in range 20, second motor 16 fixed connection is on agitator tank 14.

Preferably, the second suction pump 21 is started, the crushed sludge is sucked into the stirring tank 14 through the fourth pipeline 45, the elastic hose 24 and the third pipeline 23, the second motor 16 is started to drive the first crushing cutter 18 on the first rotating shaft 17 and the second rotating shaft 19 to stir and crush, so that the crushed stone and the like of the sludge can pass through the filter screen 15 more easily, and the sludge is finally sucked by the first suction pump 2 to be collected and treated subsequently.

The rest of the structure of this example is the same as example 1.

The working principle of the invention is as follows: the ship body 1 is moved above a river by moving, the air cylinder 7 is started to drive the limit plate 8 to contract, so that two sides of the protective cover 13 are not limited any more, the first motor 4 is started to drive the first screw rod 5 to rotate, the second fixed box 12 drives the protective cover 13 to fall under the guiding action of the slide rod 10, when the bottom of the protective cover 13 is contacted with the bottom of the river, the second double-shaft motor 38 is started to drive the drill bit 39 and the second crushing knife 40 to rotate to stir and crush sludge at the river bottom, meanwhile, the second double-shaft motor 38 drives the fourth bevel gear 37 to rotate, so that the screw sleeve 35 rotates, under the threaded connection relationship, the third fixed box 44 is driven to drive the drill bit 39 and the second crushing knife 40 to move left and right on the second screw rod 34, the reciprocating dredging operation on the river bottom sludge line is realized, meanwhile, the first double-shaft motor 33 is started to drive the sixth bevel gear 43 to rotate, under the gear, the second crushing cutter 40 on the third rotating shaft 41 is driven to rotate for dredging operation, simultaneously the first double-shaft motor 33 drives the spline housing 25 on the spline shaft 26 to rotate, so that the incomplete gear 30 on the third rotating shaft 29 is driven to rotate, the lifting block 31 is driven to drive the protective cover 13 to ascend under the meshing relationship of gears, when the incomplete gear 30 rotates to a gearless area, the protective cover 13 is driven to descend under the action of gravity and the elastic force of the spring 32, the reciprocating dredging operation of the drill 39 and the second crushing cutter 40 in the up-and-down direction is realized, the second pump 21 is started, the crushed sludge is pumped into the stirring tank 14 through the fourth pipeline 45, the elastic hose 24 and the third pipeline 23, the second motor 16 is started to drive the first crushing cutter 18 on the first rotating shaft 17 and the second rotating shaft 19 to stir and crush, so that the crushed sludge and the like can pass through the filter screen 15 more easily, the sludge is finally pumped by the first pump 2 for subsequent collection and treatment.

It should be particularly noted that all the components in the present application are common standard components or components known to those skilled in the art, and the design of the drill bit crushing assembly, the crushing cutter assembly, the first driving assembly, the second driving assembly, the first lifting assembly, the limiting plate assembly, the second lifting assembly, the second suction pump 21, the stirring crushing assembly and the first suction pump 2 is applied to a mobile river sludge dredging device in combination, which is an innovative point of the present application, and effectively solves the problem of poor sludge dredging effect of the existing river sludge dredging device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The movable river sludge dredging device comprises a movable ship body (1), and is characterized in that a protective cover (13) convenient for protection is arranged at the bottom of the movable ship body (1), a drill bit crushing assembly and a crushing cutter assembly convenient for dredging are arranged in the protective cover (13), the drill bit crushing assembly comprises a drill bit (39) and a second crushing cutter (40), the drill bit (39) and the second crushing cutter (40) are connected with a first driving assembly, the first driving assembly comprises a second double-shaft motor (38), a screw sleeve (35) and a second screw (34), the screw sleeve (35) is in threaded connection with the second screw (34), the crushing cutter assembly comprises a second crushing cutter (40) and a third rotating shaft (41), the second crushing cutter (40) and the third rotating shaft (41) are connected with a second driving assembly, and the second driving assembly comprises a first double-shaft motor (33), the top of first double-shaft motor (33) is connected with first lifting assembly, first lifting assembly fixed connection is in fixed case (12) of second, first lifting assembly includes spline housing (25), integral key shaft (26), incomplete gear (30), elevator (31) and spring (32), incomplete gear (30) rotate to be connected in the inside of elevator (31), the both sides of protection casing (13) are provided with the limiting plate subassembly, the limiting plate subassembly includes cylinder (7) and limiting plate (8), the both sides of the fixed case of second (12) are connected with second lifting assembly through drive block (6) and slider (9), second lifting assembly includes first motor (4), first screw rod (5) and slide bar (10), the top of the fixed case of second (12) is provided with first fixed case (11), first fixed case (11) fixed connection is in removing (1), be provided with second pumper (21) of being convenient for extract mud in first fixed case (11), second pumper (21) have agitator tank (14) through second pipeline (22) intercommunication, be provided with the broken subassembly of stirring in agitator tank (14), the broken subassembly of stirring includes first pivot (17), first broken sword (18), second pivot (19) and second motor (16), the top of first broken sword (18) is provided with filter screen (15) of being convenient for to filter, agitator tank (14) are connected with first pumper (2) of being convenient for extract mud through first pipeline (3).

2. The mobile riverway sludge dredging device according to claim 1, wherein the second crushing cutter (40) and the drill bit (39) are both fixedly connected to an output shaft at one end of a second double-shaft motor (38), the second double-shaft motor (38) is fixedly connected to a third fixed box (44), an output shaft at the other end of the second double-shaft motor (38) is fixedly connected with a fourth bevel gear (37), the fourth bevel gear (37) is engaged with a third bevel gear (36), the third bevel gear (36) is fixedly connected to a screw sleeve (35), the screw sleeve (35) is rotatably connected to the third fixed box (44) through a bearing, the second screw (34) is fixedly connected to a protective cover (13), and the second double-shaft motor (38) is a positive and negative double-shaft motor.

3. The mobile riverway sludge dredging device according to claim 2, wherein a plurality of second crushing knives (40) are fixedly connected to the third rotating shaft (41), one end of the third rotating shaft (41) is rotatably connected to the inside of the protective cover (13), the other end of the third rotating shaft (41) is fixedly connected to a fifth bevel gear (42), the fifth bevel gear (42) is engaged with a sixth bevel gear (43), the sixth bevel gear (43) is fixedly connected to an output shaft at one end of a first double-shaft motor (33), the first double-shaft motor (33) is fixedly connected to the inside of the protective cover (13) through a protective box, and a fourth pipeline (45) convenient for sludge extraction is fixedly connected to the protective cover (13).

4. The mobile river sludge dredging device according to claim 3, wherein the output shaft at the other end of the first double-shaft motor (33) is fixedly connected with a spline shaft (26), the spline shaft (26) is slidably connected in a spline housing (25), the spline housing (25) is rotatably connected in the second fixed box (12) through a bearing, the outer side of the spline housing (25) is fixedly connected with a first bevel gear (27), and the first bevel gear (27) is meshed with a second bevel gear (28).

5. The mobile riverway sludge dredging device according to claim 4, wherein the second bevel gear (28) is fixedly connected with one end of a third rotating shaft (29), the third rotating shaft (29) is rotatably connected in the second fixed box (12), the other end of the third rotating shaft (29) is fixedly connected with an incomplete gear (30), the inner side of the lifting block (31) is fixedly connected with a plurality of teeth engaged with the incomplete gear (30), the lifting block (31) is slidably connected in the second fixed box (12), a spring (32) is fixedly connected at the joint of the lifting block (31) and the second fixed box (12), an elastic hose (24) is arranged in the second fixed box (12), and a fourth pipeline (45) is fixedly connected with the elastic hose (24).

6. The mobile riverway sludge dredging device according to claim 1, wherein a third pipeline (23) is fixedly connected to one end of the second pump (21), the third pipeline (23) is communicated with an elastic hose (24), a plurality of first crushing knives (18) convenient for stirring and crushing are fixedly connected to the first rotating shaft (17) and the second rotating shaft (19), an output shaft of a second motor (16) is fixedly connected to the first rotating shaft (17), a synchronous belt (20) is rotatably connected to the first rotating shaft (17) and the second rotating shaft (19) penetrating through the outer side of the stirring box (14), and the second motor (16) is fixedly connected to the stirring box (14).

7. The mobile river sludge dredging device according to claim 6, wherein the first motor (4) is fixedly connected to the outer side of the first fixed box (11) through a protective box, the first screw (5) is fixedly connected with an output shaft of the first motor (4), the first screw (5) is rotatably connected to the inside of the mobile hull (1), a driving block (6) is connected to the first screw (5) in a threaded manner, the driving block (6) and a sliding block (9) are both fixedly connected to the outer side of the second fixed box (12), the sliding block (9) is connected to a sliding rod (10) in a sliding manner, and the sliding rod (10) is fixedly connected to the inside of the mobile hull (1) through a mounting plate.

8. The mobile riverway sludge dredging device according to claim 1, wherein grooves for the position-avoiding limiting plates (8) are formed in two sides of the protective cover (13), the limiting plates (8) are fixedly connected with piston rods of the cylinders (7), and the cylinders (7) are fixedly connected to the bottom of the movable hull (1) through protective boxes.