Rake arm pipe with coral reef stone crushing device

Abstract

The invention provides a rake arm pipe with a coral reef stone crushing device, and relates to the technical field of rake arm pipes of drag suction dredgers, which comprises a mud inlet pipe and an arm pipe arranged at the input end of the mud inlet pipe, the rolling mechanism comprises a rotating sleeve rotationally arranged between the mud inlet pipe and the arm pipe, a fixing column arranged on the rotating sleeve, a fixing rod arranged on the end face of the fixing column, a plurality of pressing plates movably arranged on the outer side of the fixing column and a pushing assembly arranged in the arm pipe, and the rotating mechanism is arranged outside the mud inlet pipe. The pushing assembly is arranged in the mud inlet pipe and used for driving the rolling mechanism to rotate in the arm pipe, a sliding sleeve is arranged on the inner wall of the mud inlet pipe, a filter screen is arranged on the inner wall of the sliding sleeve, and the pulling mechanism is arranged between the filter screen and the pushing assembly and used for driving the filter screen to bounce back and forth. According to the coral reef crushing device, coral reefs sucked into the handle arm pipe can be thoroughly crushed, and the situation that the coral reefs are accumulated to cause pipeline blockage, and work of a suction ship is affected is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of a rake arm pipe of a hopper vessel, in particular to a rake arm pipe with a coral reef stone crushing device. Background Art

[0002] Trailing suction hopper dredger and cutter suction hopper dredger are the two most widely used types of dredging construction vessels. Among them, the trailing suction hopper dredger is flexible, strong in wind and wave resistance, and has a wide range of operating water depths. During operation, the rake head connected to it is placed underwater through the rake arm. The ship sails and drags the rake head through the rake arm to cut the soil layer. The dredged material is sucked into the rake head fixed body and transported to the mud tank by the rake pipe in the rake arm. The rake arm includes a rake head winch, a rake middle winch, an upper rake pipe, a lower rake pipe and a universal joint.

[0003] At present, when a trailing suction hopper vessel performs bow blowing construction in dredging backfill and coastal protection engineering filling construction projects, due to the thin sand layer and the brittleness of the coral reef itself, it is inevitable that a large number of coral reef stones will be sucked into the cabin through the suction pipe of the trailing suction port, resulting in a large number of coral reef stones accumulating in the cabin. It is difficult to pump the stones out of the cabin during bow blowing construction, which easily causes pipe blockage, greatly affecting the efficiency of bow blowing construction. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the existing rake arm pipe cannot crush the coral reefs when sucking them into the pipe, resulting in blockage inside the pipe and affecting the dredging work of the rake suction hopper ship.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] The rake arm pipe with a coral reef stone crushing device comprises a mud inlet pipe and an arm pipe arranged at the input end of the mud inlet pipe, and also comprises:

[0007] The rolling mechanism includes a rotating sleeve rotatably arranged between the mud inlet pipe and the arm pipe, a fixed column arranged on the rotating sleeve, a fixed rod arranged on the end surface of the fixed column, a plurality of pressing plates movably arranged outside the fixed column, and a propulsion assembly arranged inside the arm pipe;

[0008] A rotating mechanism, which is arranged outside the mud inlet pipe and is used to drive the rolling mechanism to rotate inside the arm pipe;

[0009] The pulling mechanism is provided with a sliding sleeve on the inner wall of the mud inlet pipe, a filter screen is provided on the inner wall of the sliding sleeve, and the pulling mechanism is arranged between the filter screen and the propulsion component to drive the filter screen to reciprocate.

[0010] As a preferred technical solution of the present application, a fixed seat is provided on the outer wall of the fixed column, a sliding seat is slidably connected to the wall of the fixed rod, a pressure rod is movably connected between the fixed seat and the sliding seat and the inner wall of the pressure plate, the outer wall of the pressure plate is provided with evenly distributed rolling grooves, the inner wall of the rotating sleeve is provided with a fixed plate, and a connecting rod is provided between the fixed plate and the fixed rod.

[0011] As a preferred technical solution of the present application, the propulsion assembly includes a rotating rod rotatably arranged on the wall of the mud inlet pipe, a disc arranged at one end of the rotating rod located inside the mud inlet pipe, a push cylinder slidably arranged on the wall of the fixed rod and abutting against the sliding seat, a push rod arranged on the outer wall of the push cylinder, a square frame arranged at the end of the push rod away from the push cylinder, and a crank arranged at the center position of the bottom of the disc, and the end of the crank away from the disc is slidably connected to the inner wall of the square frame.

[0012] As a preferred technical solution of the present application, the rotating mechanism includes a box body arranged on the outer wall of the mud inlet pipe, a rotating shaft rotatably arranged on the side wall of the box body, a gear arranged at the end of the rotating shaft away from the box body, and a gear ring arranged on the outer wall of the rotating sleeve and meshing with the gear.

[0013] As a preferred technical solution of the present application, an intermittent mechanism is also provided inside the box, and the intermittent mechanism includes a motor arranged on the inner wall of the box, an incomplete gear arranged at the output end of the motor, a complete gear arranged on the rod wall of the rotating shaft located inside the box and meshing with the incomplete gear, and a torsion spring sleeved on the rod wall of the rotating shaft located between the complete gear and the inner wall of the box, and an active bevel gear is provided on the rod wall of the rotating shaft located inside the box, and the top of the rotating rod extends to the inside of the box and is provided with a driven bevel gear.

[0014] As a preferred technical solution of the present application, sealing rings are provided on both side end faces of the rotating sleeve, rotating grooves matching with the sealing rings are provided on the end faces of the mud inlet pipe and the arm pipe, and a protective shell is also provided between the mud inlet pipe and the arm pipe.

[0015] As a preferred technical solution of the present application, a guide block is provided on the inner wall of the arm tube, and the guide block has a conical structure on the side away from the mud inlet pipe, and the width of the guide block is smaller than the inner diameter of the arm tube.

[0016] As a preferred technical solution of the present application, a stirring rod extending outward through the guide block is provided at one end of the fixed plate away from the connecting rod, and spiral blades evenly distributed are provided on the rod wall of the stirring rod.

[0017] As a preferred technical solution of the present application, the pulling mechanism includes a reel arranged on the rod wall of the rotating rod located inside the mud inlet pipe and a cable wound on the reel, and the end of the cable away from the reel is connected to the surface of the filter screen.

[0018] As a preferred technical solution of the present application, the inner wall of the mud inlet pipe is also provided with a fixing ring, the side wall of the fixing ring is provided with a fixing cylinder, a sliding rod is slidably connected inside the fixing cylinder, a spring is provided between the sliding rod and the inner bottom wall of the fixing cylinder, and the end of the sliding rod away from the fixing cylinder is connected to the side wall of the sliding sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the sludge is sucked into the arm pipe and the mud inlet pipe through the rake head, the propulsion assembly can drive the push cylinder to slide back and forth on the fixed rod. At this time, the fixed column, fixed seat, sliding seat and pressure rod can drive the pressure plate to expand back and forth, and continuously resist the inner wall of the mud inlet pipe, so that the coral reefs mixed in the sludge can be crushed, which solves the problem in the prior art that the coral reefs cannot be crushed as the sludge is sucked into the rake arm pipe, causing the pipe body to be blocked and affecting the dredging work of the rake suction vessel.

[0021] 2. When the propulsion component is working, the fixed column, fixed rod and pressure plate can be driven to rotate through the set rotating shaft, gear and gear ring, so that the sludge and coral reefs inside the suction pipe body can be crushed more evenly, and the rotating sleeve will also drive the guide block and the stirring rod to rotate. The set guide block can make the sludge and coral reefs flow along the inner wall of the pipe body, making it convenient for the pressure plate to crush the coral reefs thoroughly, and the stirring rod will also drive the spiral blade to rotate to cut and crush the coral reefs, further avoiding the problem of blockage in the pipe body.

[0022] 3. The filter net can be used to filter and block the gravel in the sludge. At this time, the intermittent mechanism can cooperate with the propulsion component to drive the reel to rotate back and forth, and the reel will reel in the cable back and forth, thereby pulling the filter net to bounce continuously, so as to shake off the sludge accumulated on the surface of the filter net and avoid the filter being blocked by the accumulated sludge. The intermittent mechanism can also drive the pressure plate and the spiral blade to rotate back and forth, further improving the effect of crushing the coral reefs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the present invention;

[0024] Figure 2 It is a partial cross-sectional structural diagram of the present invention;

[0025] Figure 3 It is a bottom-view cross-sectional structural diagram of the present invention;

[0026] Figure 4 It is a front cross-sectional structural diagram of the present invention;

[0027] Figure 5 This is a structural diagram of the mud inlet pipe and the arm pipe of the present invention;

[0028] Figure 6 It is a structural diagram of the rolling mechanism of the present invention;

[0029] Figure 7 It is a structural diagram of the propulsion assembly of the present invention;

[0030] Figure 8 It is a structural diagram of the guide block of the present invention;

[0031] Fig. 9 It is a structural diagram of the filter screen of the present invention;

[0032] Fig.10 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0033] Fig.11 For the present invention Figure 4 Enlarged structural diagram at point B in the middle.

[0034] Indicated in the figure:

[0035] 1. Mud inlet pipe; 101. Box body; 2. Arm pipe; 201. Protective shell; 3. Rotating sleeve; 301. Fixed plate; 302. Connecting rod; 303. Sealing ring; 304. Gear ring; 4. Fixed column; 401. Fixed seat; 5. Fixed rod; 501. Sliding seat; 6. Press rod; 7. Press plate; 8. Push cylinder; 9. Rotating rod; 901. Disc; 902. Crank; 903. Square frame; 904. Push rod; 905. Driven bevel gear wheel; 10, motor; 1001, incomplete gear; 11, rotating shaft; 1101, complete gear; 1102, gear; 1103, torsion spring; 1104, active bevel gear; 12, guide block; 13, stirring rod; 1301, spiral blade; 14, sliding sleeve; 1401, filter screen; 15, reel; 1501, cable; 16, fixing ring; 1601, fixing cylinder; 1602, sliding rod; 1603, spring. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0037] like Figures 1 to 4As shown, the present embodiment proposes a rake arm tube with a coral reef stone crushing device, including a mud inlet pipe 1 and an arm tube 2 arranged at the input end of the mud inlet pipe 1, and also includes a rolling mechanism, a rotating mechanism and a pulling mechanism. The rolling mechanism includes a rotating sleeve 3 rotatably arranged between the mud inlet pipe 1 and the arm tube 2, a fixed column 4 arranged on the rotating sleeve 3, a fixed rod 5 arranged on the end surface of the fixed column 4, a plurality of pressure plates 7 movably arranged on the outside of the fixed column 4, and a propulsion assembly arranged inside the arm tube 2. The rotating mechanism is arranged outside the mud inlet pipe 1 to drive the rolling mechanism to rotate inside the arm tube 2. A sliding sleeve 14 is arranged on the inner wall of the mud inlet pipe 1, and a filter screen 1401 is arranged on the inner wall of the sliding sleeve 14. The pulling mechanism is arranged between the filter screen 1401 and the propulsion assembly to drive the filter screen 1401 to reciprocate.

[0038] First, the sludge is sucked into the arm pipe 2 and the mud inlet pipe 1 and flows into the cabin through the rake head installed on the rake arm pipe. At this time, the propulsion assembly can drive the multiple pressure plates 7 on the outside of the fixed column 4 and the fixed rod 5 to expand reciprocatingly, and continuously resist the inner wall of the mud inlet pipe 1, so that the coral reefs that are sucked into the pipe body along with the sludge can be crushed to prevent the coral reefs from accumulating inside the pipe body and causing blockage. At the same time, the rotating mechanism can also drive the reciprocatingly expanding pressure plate 7 to rotate axially along the mud inlet pipe 1, so that the coral reefs can be crushed more evenly. The filter net 1401 can filter and block impurities and stones in the sludge, and the pulling mechanism can continuously pull the filter net 1401 to make the filter net 1401 bounce back and forth, shake off the sludge impurities accumulated on its surface, and prevent the concentrated accumulation of sludge impurities from clogging the filter net 1401.

[0039] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a fixed seat 401 is provided on the outer wall of the fixed column 4, a sliding seat 501 is slidably connected to the rod wall of the fixed rod 5, a pressing rod 6 is movably connected between the fixed seat 401 and the sliding seat 501 and the inner wall of the pressing plate 7, the outer wall of the pressing plate 7 is provided with evenly distributed rolling grooves, a fixed plate 301 is provided on the inner wall of the rotating sleeve 3, and a connecting rod 302 is provided between the fixed plate 301 and the fixed rod 5;

[0040] The propulsion assembly includes a rotating rod 9 rotatably arranged on the wall of the mud inlet pipe 1, a disc 901 arranged at one end of the rotating rod 9 located inside the mud inlet pipe 1, a push cylinder 8 slidably arranged on the wall of the fixed rod 5 and abutting against the sliding seat 501, a push rod 904 arranged on the outer wall of the push cylinder 8, a square frame 903 arranged at one end of the push rod 904 away from the push cylinder 8, and a crank 902 arranged at the center of the bottom of the disc 901, and the end of the crank 902 away from the disc 901 is slidably connected to the inner wall of the square frame 903;

[0041] The rotating rod 9 can drive the disc 901 to rotate, and the disc 901 will move back and forth by the crank 902 to move the square frame 903 and the push rod 904. At this time, the push rod 904 will drive the push cylinder 8 to slide back and forth on the fixed rod 5, and the push cylinder 8 will push the slide 501 to slide back and forth on the fixed rod 5. At this time, the slide 501 will squeeze the pressure plate 7 on the outside of the fixed column 4 back and forth through the pressure rod 6, so that the pressure plate 7 will continue to expand and contract. Therefore, the reciprocatingly expanding pressure plate 7 will continuously resist the inner wall of the mud inlet pipe 1, thereby being able to crush the coral reefs mixed in the sludge.

[0042] like Figure 2 , Figure 4 , Figure 5 and Fig.11 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the rotating mechanism includes a box body 101 arranged on the outer wall of the mud inlet pipe 1, a rotating shaft 11 rotatably arranged on the side wall of the box body 101, a gear 1102 arranged at one end of the rotating shaft 11 away from the box body 101, and a gear ring 304 arranged on the outer wall of the rotating sleeve 3 and meshing with the gear 1102;

[0043] The rotating shaft 11 can drive the gear 1102 to rotate, and then drive the rotating sleeve 3 provided with the gear ring 304 to rotate. Therefore, the rotating sleeve 3 will drive the fixed column 4 to rotate, thereby driving the pressure plate 7 to rotate, so as to crush the inner wall of the mud inlet pipe 1 at different positions, so as to crush the coral reef more thoroughly.

[0044] Among them, sealing rings 303 are provided on the end faces of both sides of the rotating sleeve 3, and rotating grooves matched with the sealing rings 303 are provided on the end faces of the mud inlet pipe 1 and the arm pipe 2, and a protective shell 201 is also provided between the mud inlet pipe 1 and the arm pipe 2; the sealing ring 303 is matched with the sealing groove to facilitate the rotating sleeve 3 to be stably connected to the mud inlet pipe 1 and the arm pipe 2 for rotation, and the protective shell 201 can shield and protect the ring gear 304 and the gear 1102 to prevent the ring gear 304 and the gear 1102 from being touched by foreign objects and affecting the setting and operation.

[0045] like Fig.10As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, an intermittent mechanism is further provided inside the box 101, the intermittent mechanism comprises a motor 10 arranged on the inner wall of the box 101, an incomplete gear 1001 arranged at the output end of the motor 10, a complete gear 1101 arranged on the rod wall inside the box 101 and meshing with the incomplete gear 1001, and a torsion spring 1103 sleeved on the rod wall between the complete gear 1101 and the inner wall of the box 101 of the rotating shaft 11, and a driving bevel gear 1104 is provided on the rod wall inside the box 101 of the rotating shaft 11, and the top of the rotating rod 9 extends to the inside of the box 101 and is provided with a driven bevel gear 905;

[0046] The starting motor 10 can drive the incomplete gear 1001 connected to its output end to rotate. When the incomplete gear 1001 rotates to the side with teeth and contacts with the complete gear 1101, it will drive the complete gear 1101 and the rotating shaft 11 to rotate and make the torsion spring 1103 rotate. When the incomplete gear 1001 rotates to the side without teeth and contacts with the complete gear 1101, the torsion spring 1103 will be released from the force and drive the complete gear 1101 and the rotating shaft 11 to reverse and reset. Therefore, the rotating shaft 11 can drive the rotating sleeve 3 to reciprocate through the gear 304 and the ring gear 1102, and the rotating shaft 11 can also drive the rotating rod 9 provided with the driven bevel gear 905 to reciprocate through the active bevel gear 1104, so as to further facilitate the complete crushing of the coral reefs sucked into the mud inlet pipe 1.

[0047] like Figure 8 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a guide block 12 is provided on the inner wall of the arm tube 2, and the guide block 12 has a conical structure on the side away from the mud inlet pipe 1, and the width of the guide block 12 is smaller than the inner diameter of the arm tube 2;

[0048] An end of the fixed plate 301 away from the connecting rod 302 is provided with a stirring rod 13 passing through the guide block 12 and extending outwards, and a rod wall of the stirring rod 13 is provided with evenly distributed spiral blades 1301;

[0049] The guide block 12 is provided to make the sludge and coral reefs flow along the inner wall of the arm pipe 2 and the mud inlet pipe 1, so that the pressure plate 7 can evenly squeeze the coral reefs, and the rotating sleeve 3 can also drive the stirring rod 13 to rotate, and the stirring rod 13 can crush the sludge and coral reefs sucked into the arm pipe 2 through the spiral blade 1301 on its outer wall, thereby further improving the effect of crushing the coral reefs.

[0050] like Figure 4 , Figure 7 and Fig. 9As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the pulling mechanism includes a reel 15 arranged on the rod wall of the rotating rod 9 located inside the mud inlet pipe 1 and a cable 1501 wound on the reel 15, and one end of the cable 1501 away from the reel 15 is connected to the surface of the filter screen 1401;

[0051] The inner wall of the mud inlet pipe 1 is also provided with a fixing ring 16, and the side wall of the fixing ring 16 is provided with a fixing cylinder 1601, and a sliding rod 1602 is slidably connected inside the fixing cylinder 1601, and a spring 1603 is provided between the sliding rod 1602 and the inner bottom wall of the fixing cylinder 1601, and the end of the sliding rod 1602 away from the fixing cylinder 1601 is connected to the side wall of the sliding sleeve 14;

[0052] When the rotating rod 9 rotates back and forth, it can also drive the reel 15 to rotate back and forth together, continuously winding up and releasing the cable 1501. Therefore, when the cable 1501 is wound up, it will pull the filter screen 1401 to slide. At this time, the filter screen 1401 will drive the slide rod 1602 to slide and stretch the spring 1603 through the sliding sleeve 14. When the cable 1501 is released, the spring 1603 will be released from the force and drive the slide rod 1602 and the sliding sleeve 14 to rebound and reset, thereby driving the filter screen 1401 to bounce continuously, so as to shake off the sludge and gravel accumulated on the surface of the filter screen 1401, and prevent the accumulated sludge impurities from accelerating the clogging of the filter screen 1401.

[0053] The working principle of the present invention is as follows: first, the sludge is sucked into the arm pipe 2 and the mud inlet pipe 1 and flows into the cabin through the rake head installed on the rake arm pipe, and then the motor 10 is started to work to drive the incomplete gear 1001 connected to its output end to rotate. When the incomplete gear 1001 rotates to the toothed side and contacts the complete gear 1101, it will drive the complete gear 1101 and the rotating shaft 11 to rotate and make the torsion spring 1103 rotate. When the incomplete gear 1001 rotates to the toothless side and contacts the complete gear 1101, the torsion spring 1103 will be released from the force and drive the complete gear 1101 and the rotating shaft 11 to reverse and reset, so the rotating shaft 11 can also be rotated by The active bevel gear 1104 drives the rotating rod 9 with the driven bevel gear 905 to rotate reciprocatingly, and the rotating rotating rod 9 can drive the disc 901 to rotate. The disc 901 will move the square frame 903 and the push rod 904 back and forth through the crank 902. At this time, the push rod 904 will drive the push cylinder 8 to slide back and forth on the fixed rod 5, and the push cylinder 8 will push the slide 501 to slide on the fixed rod 5 back and forth. At this time, the slide 501 will squeeze the pressure plate 7 on the outside of the fixed column 4 back and forth through the pressure rod 6, so that the pressure plate 7 is continuously expanded and contracted. Therefore, the reciprocatingly expanding pressure plate 7 will continuously resist the inner wall of the mud inlet pipe 1, thereby being able to crush the coral reefs mixed in the sludge. Moreover, the rotating shaft 11 can drive the gear 1102 to rotate, and then drive the rotating sleeve 3 provided with the gear ring 304 to rotate. Therefore, the rotating sleeve 3 will drive the fixed column 4 to rotate, thereby driving the pressure plate 7 to rotate, so as to crush the inner wall of the mud inlet pipe 1 at different positions, so as to crush the coral reef more thoroughly. The filter screen 1401 is provided to filter and block impurities and stones in the sludge, and the rotating rod 9 can also drive the reel 15 to rotate reciprocally when revolving, and continuously reel in and release the cable 1501. Therefore, when the cable 1501 is reeled in, it will pull the filter screen 1401 to slide. At this time, the filter screen 1401 will drive the slide rod 1602 to slide and stretch the spring 1603 through the sliding sleeve 14. When the cable 1501 is released, the spring 1603 will be released from the force and drive the slide rod 1602 and the sliding sleeve 14 to rebound and reset, thereby driving the filter screen 1401 to bounce continuously, so as to shake off the sludge and gravel accumulated on the surface of the filter screen 1401, and prevent the accumulated sludge impurities from accelerating the clogging of the filter screen 1401.

[0054] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; all technical solutions and improvements that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A rake arm pipe with a coral reef rock crushing device, comprising a mud inlet pipe (1) and an arm pipe (2) arranged at the input end of the mud inlet pipe (1), characterized in that: Also includes: A rolling mechanism, the rolling mechanism comprising a rotating sleeve (3) rotatably arranged between a mud inlet pipe (1) and an arm pipe (2), a fixed column (4) arranged on the rotating sleeve (3), a fixed rod (5) arranged on the end surface of the fixed column (4), a plurality of pressing plates (7) movably arranged outside the fixed column (4), and a propulsion assembly arranged inside the arm pipe (2); A rotating mechanism, the rotating mechanism being arranged outside the mud inlet pipe (1) and being used for driving the rolling mechanism to rotate inside the arm pipe (2); A pulling mechanism, wherein the inner wall of the mud inlet pipe (1) is provided with a sliding sleeve (14), the inner wall of the sliding sleeve (14) is provided with a filter screen (1401), and the pulling mechanism is arranged between the filter screen (1401) and the propulsion assembly, and is used to drive the filter screen (1401) to reciprocate.

2. The rake arm tube with a coral reef stone crushing device according to claim 1, characterized in that: The outer wall of the fixed column (4) is provided with a fixed seat (401), the rod wall of the fixed rod (5) is slidably connected with a sliding seat (501), a pressing rod (6) is movably connected between the fixed seat (401) and the sliding seat (501) and the inner wall of the pressing plate (7), the outer wall of the pressing plate (7) is provided with evenly distributed rolling grooves, the inner wall of the rotating sleeve (3) is provided with a fixed plate (301), and a connecting rod (302) is provided between the fixed plate (301) and the fixed rod (5).

3. The rake arm tube with a coral reef stone crushing device according to claim 1, characterized in that: The propulsion assembly comprises a rotating rod (9) rotatably arranged on the wall of the mud inlet pipe (1), a disc (901) arranged at one end of the rotating rod (9) located inside the mud inlet pipe (1), a push cylinder (8) slidably arranged on the wall of the fixed rod (5) and abutting against the sliding seat (501), a push rod (904) arranged on the outer wall of the push cylinder (8), a square frame (903) arranged at one end of the push rod (904) away from the push cylinder (8), and a crank (902) arranged at the center position of the bottom of the disc (901), and the end of the crank (902) away from the disc (901) is slidably connected to the inner wall of the square frame (903).

4. The rake arm tube with a coral reef stone crushing device according to claim 3, characterized in that: The rotating mechanism comprises a box body (101) arranged on the outer wall of the mud inlet pipe (1), a rotating shaft (11) rotatably arranged on the side wall of the box body (101), a gear (1102) arranged at an end of the rotating shaft (11) away from the box body (101), and a gear ring (304) arranged on the outer wall of the rotating sleeve (3) and meshing with the gear (1102).

5. The rake arm tube with a coral reef stone crushing device according to claim 4, characterized in that: An intermittent mechanism is also provided inside the box (101), the intermittent mechanism comprising a motor (10) arranged on the inner wall of the box (101), an incomplete gear (1001) arranged at the output end of the motor (10), a complete gear (1101) arranged on the rotating shaft (11) on the rod wall inside the box (101) and meshing with the incomplete gear (1001), and a torsion spring (1103) sleeved on the rod wall of the rotating shaft (11) between the complete gear (1101) and the inner wall of the box (101), and a driving bevel gear (1104) is provided on the rod wall of the rotating shaft (11) located inside the box (101), and the top of the rotating rod (9) extends into the inside of the box (101) and is provided with a driven bevel gear (905).

6. The rake arm tube with a coral reef stone crushing device according to claim 1, characterized in that: The end surfaces of both sides of the rotating sleeve (3) are provided with sealing rings (303), the end surfaces of the mud inlet pipe (1) and the arm pipe (2) are provided with rotating grooves matching with the sealing rings (303), and a protective shell (201) is also provided between the mud inlet pipe (1) and the arm pipe (2).

7. The rake arm tube with a coral reef stone crushing device according to claim 2, characterized in that: The inner wall of the arm tube (2) is provided with a guide block (12); the side of the guide block (12) away from the mud inlet pipe (1) is in a conical structure, and the width of the guide block (12) is smaller than the inner diameter of the arm tube (2).

8. The rake arm tube with a coral reef stone crushing device according to claim 7, characterized in that: An end of the fixed plate (301) away from the connecting rod (302) is provided with a stirring rod (13) that passes through the guide block (12) and extends outwards, and a rod wall of the stirring rod (13) is provided with evenly distributed spiral blades (1301).

9. The rake arm tube with a coral reef stone crushing device according to claim 1, characterized in that: The pulling mechanism comprises a reel (15) arranged on the inner rod wall of the rotating rod (9) located in the mud inlet pipe (1) and a cable (1501) wound around the reel (15); an end of the cable (1501) away from the reel (15) is connected to the surface of the filter screen (1401).

10. The rake arm tube with a coral reef stone crushing device according to claim 1, characterized in that: The inner wall of the mud inlet pipe (1) is further provided with a fixing ring (16), the side wall of the fixing ring (16) is provided with a fixing cylinder (1601), the interior of the fixing cylinder (1601) is slidably connected with a sliding rod (1602), a spring (1603) is provided between the sliding rod (1602) and the inner bottom wall of the fixing cylinder (1601), and one end of the sliding rod (1602) away from the fixing cylinder (1601) is connected to the side wall of the sliding sleeve (14).

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