CN110668385B

CN110668385B - A mud propelling movement subassembly for lake desilting

Info

Publication number: CN110668385B
Application number: CN201910951601.3A
Authority: CN
Inventors: 潘显敏
Original assignee: Henan Xinghe Hydropower Engineering Co ltd
Current assignee: Henan Xinghe Hydropower Engineering Co.,Ltd.
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2021-10-22
Anticipated expiration: 2039-10-09
Also published as: CN110668385A

Abstract

The invention provides a mud pushing assembly for lake dredging, which comprises a pushing device (300) arranged in a fixed shell (100), wherein the pushing device (300) is used for receiving mud and pushing and outputting the mud to storage equipment for storing the mud, the pushing device (300) comprises a mud pushing mechanism (310) and a one-way conveying mechanism (320), the mud pushing mechanism (310) is connected and communicated with a suction mechanism (200) for pumping the mud, the mud is pumped and conveyed to the mud pushing mechanism (310) through the suction mechanism (200), the mud pushing mechanism (310) is used for pushing the mud to the one-way conveying mechanism (320), and the one-way conveying mechanism (320) is used for conveying the mud to the storage equipment; it can constitute a mud and absorb the reciprocal cycle process of carrying, mud propelling movement to storage facilities in, and whole mud absorbs the process more convenient quick.

Description

A mud propelling movement subassembly for lake desilting

Technical Field

The invention relates to the field of dredging equipment, in particular to a slurry pushing assembly for lake dredging.

Background

With the rapid development of national comprehensive traffic network construction and tunnel engineering construction scale and scientific level accelerated in recent years, mountain tunnels emerge in expressways in large quantities, and because the longitudinal slopes of the mountain tunnels are small and the water inflow amount in the holes is large, sludge in the central drainage ditch is large and cannot be discharged normally, in order to implement standardized construction, ensure the environment-friendly water conservation work to be in place and avoid the sludge from blocking the water ditch, a special person is required to be arranged to take charge of the sludge cleaning work in the water ditch, at present, the central water ditch cleaning work is mainly operated manually, a constructor is required to shovel the sludge from the water ditch to a small cart by using a shovel and to transport the sludge to a fixed place outside the holes by using a small cart, but the traditional cleaning mode has low efficiency, high labor intensity of the constructor, poor construction conditions in the holes and severe operation environment, the invention provides a slurry extraction device which is characterized in that a packing auger suction and conveying mode is adopted to suck slurry and a pushing mode is adopted to convey the slurry into a storage device, a reciprocating cycle process of slurry suction and conveying and slurry pushing into the storage device can be formed, the whole slurry suction process is more convenient and faster, in addition, the slurry extraction device can be installed on a traveling vehicle such as a tractor and the like for use, can also be manually lifted by an operator for use, and is more convenient for complex environment work.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a slurry pushing assembly for lake dredging, which can form a reciprocating cycle process of slurry suction and conveying and slurry pushing to a storage device, and the whole slurry suction process is more convenient and faster.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The mud pushing assembly for lake dredging comprises a pushing device (300) arranged in a fixed shell (100), wherein the pushing device (300) is used for receiving mud and pushing and outputting the mud to storage equipment for storing the mud, the pushing device (300) comprises a mud pushing mechanism (310) and a one-way conveying mechanism (320), the mud pushing mechanism (310) is connected and communicated with a suction mechanism (200) for pumping the mud, the mud is pumped and conveyed into the mud pushing mechanism (310) through the suction mechanism (200), the mud pushing mechanism (310) is used for pushing the mud to the one-way conveying mechanism (320), and the one-way conveying mechanism (320) is used for conveying the mud to the storage equipment;

the mud pushing mechanism (310) comprises a pushing pump (3110) and a pushing member (3120), the pushing pump (3110) is used for receiving the mud sucked and conveyed by the sucking and conveying mechanism (200) and pushing the mud into the one-way conveying mechanism (320), and the pushing member (3120) is used for driving the pushing pump (3110) to do the action of pushing the mud;

the one-way conveying mechanism (320) comprises a one-way valve (3210) and an opening and closing member (3220), the one-way valve (3210) is used for receiving slurry pushed by the pushing pump (3110), the operation state of the one-way valve (3210) can be divided into an opening state in which the slurry can smoothly pass through and a closing state in which the slurry cannot pass through and the inside is blocked, and the opening and closing member (3220) is used for being triggered by the pushing member (3120) and controlling the operation state switching of the one-way valve (3210).

The technical scheme is further improved and optimized.

Push pump (3110) including a support part, the propelling movement pump body, a support part includes fixed bolster (3111), movable support (3112), fixed bolster (3111) fixed mounting just fixes being provided with guide post (3113) that the direction of guidance is perpendicular to ground in fixed casing (100) on it, movable support (3112) movable mounting constitutes the sliding guide cooperation in guide post (3113) outside and between the two.

The technical scheme is further improved and optimized.

The push pump body comprises a pump shell (3114), a sliding cylinder (3116), a piston (3117) and a piston rod (3118), the pump shell (3114) is of a vertically-arranged cylindrical structure with an opening at the upper end and a closed lower end, the closed end of the pump shell (3114) is fixedly mounted at the top of a fixed support (3111), a communicating nozzle (3115) is further arranged outside the pump shell (3114), the communicating nozzle (3115) is close to the opening end of the pump shell (3114), the communicating nozzle (3115) is communicated with the suction and delivery mechanism (200), and a first through hole is coaxially formed in the closed end of the pump shell (3114);

the sliding cylinder (3116) is of a vertically-arranged cylindrical structure with an opening at the upper end and a closed lower end, the sliding cylinder (3116) is coaxially arranged in the pump shell (3114) and forms sealed sliding guide fit between the sliding cylinder and the pump shell, the initial position of the sliding cylinder (3116) is located between the connection nozzle (3115) and the closed end of the pump shell (3114), and the closed end of the sliding cylinder (3116) is coaxially provided with a second through hole;

the piston (3117) is coaxially arranged in the sliding cylinder (3116) and a sealed sliding guide fit is formed between the piston and the sliding cylinder, the piston rod (3118) and the pump shell (3114) are coaxially arranged, one end of the piston rod (3118) is fixedly connected with the piston (3117), and the other end of the piston rod (3118) penetrates through the two/one of the through holes and is fixedly connected with the sliding support (3112);

the part of the piston rod (3118) below the pump shell (3114) is externally provided with a touch block in a threaded connection mode, the outside of the piston rod (3118) is further sleeved with a stroke spring (3119), one end of the stroke spring (3119) abuts against the touch block, the other end of the stroke spring (3119) penetrates through the through hole and abuts against the closed end of the sliding barrel (3116), and the elastic force of the stroke spring (3119) drives the sliding barrel (3116) to move upwards;

the one-way conveying mechanism (320) is communicated with the opening end of the pump shell (3114).

The technical scheme is further improved and optimized.

The pushing member (3120) comprises a fastening support (3121), a sliding plate (3122) and a belt transmission assembly (3127), the fastening support (3121) is fixed on the fixed support (3111), the fastening support (3121) is provided with a guide rod (3123) with a guide direction perpendicular to the ground, the sliding plate (3122) is horizontally movably mounted outside the guide rod (3123) and forms a sliding guide fit between the two groups, and the sliding plate (3122) is provided with a traction hole (3124) with a guide direction parallel to the extension direction of the sliding plate;

slide (3122) and sliding support (3112) between be provided with the connecting piece and connect through the connecting piece between the two, the connecting piece includes guide arm (3125), buffer spring (3126), guide arm (3125) are vertical to be fixed in on sliding support (3112), guide arm (3125) outside is located through the guide hole movable sleeve to slide (3122) and guide arm (3125) top seted up guide hole and slide (3122) on slide (3122), and guide arm (3125) bottom is provided with spacing bolt, constitute the slip guide cooperation between guide hole and guide arm (3125), guide arm (3125) outside is located to buffer spring (3126) cover, buffer spring's (3126) top and sliding support (3112) are contradicted, the bottom is contradicted with slide (3122), the elastic force of buffer spring (3126) slide (3122) is descending motion, the connecting piece is provided with two sets and is located slide (3122) respectively and orders about the one end of self extending direction.

The technical scheme is further improved and optimized.

The belt transmission assembly (3127) comprises a driving/driven belt pulley and a transmission belt, the driving belt pulley is positioned above the driven belt pulley, the diameters of the driving belt pulley and the driven belt pulley are consistent, the axial direction of the driving/driven belt pulley is parallel to the ground and perpendicular to the extending direction of the sliding plate (3122), the driving/driven belt pulley and the driven belt pulley are movably mounted on the fastening support (3121) and can axially rotate around the driving/driven belt pulley, the transmission belt is arranged between the driving/driven belt pulley, a traction pin (3128) is horizontally arranged on the transmission belt, and the free end of the traction pin (3128) penetrates through the traction hole (3124);

the contact point on the tangential direction perpendicular to ground of driving pulley and drive belt have two sets and be respectively last contact point one, go up contact point three, the tangential direction of driving pulley and drive belt has a set of and be last contact point two with the contact point on ground, the tangential direction perpendicular to ground of driven pulley and drive belt has two sets and be respectively lower contact point one, lower contact point three, the tangential direction of driven pulley and drive belt has a set of and be lower contact point two with the contact point on ground, in the operation of belt drive assembly (3127), towing pin (3128) can be in proper order through lower contact point one, lower contact point two, lower contact point three, go up contact point one, go up contact point two, go up contact point three.

The technical scheme is further improved and optimized.

The check valve (3210) comprises a valve housing (3211), a discharge pipeline (3212), a valve core (3213) and a valve rod (3214), wherein the valve housing (3211) is of a cylindrical structure with openings at both ends, the two openings are both matched with a valve cover, the axial direction of the valve housing (3211) is parallel to the axial direction of a driving pulley of the belt transmission assembly (3127), the valve housing (3211) is fixedly installed in the fixed housing (100), and the bottom of the valve housing (3211) is provided with a fixed nozzle which is communicated with the opening end of the pump housing (3114);

the discharge pipeline (3212), the pump shell (3114) and the fixed nozzle are coaxially arranged, the bottom end of the discharge pipeline (3212) is connected and communicated with the top of the valve casing (3211), the top end of the discharge pipeline penetrates through the fixed end cover and extends out of the fixed casing (100), a connecting pipe is arranged between the top end of the discharge pipeline (3212) and the storage equipment, and slurry is conveyed between the discharge pipeline (3212) and the storage equipment through the connecting pipe;

the valve core (3213) is a cylinder structure, the valve core (3213) is coaxially arranged in the valve casing (3211) and forms a sealed rotation fit with the valve casing, a valve hole (3215) penetrating through the radial thickness of the valve core (3213) is arranged on the outer circumferential surface of the valve core (3213), when the valve hole (3215) is communicated with the fixed nozzle/discharge pipeline (3212), the check valve (3210) is in an open state, and when the valve hole (3215) is not in contact with the fixed nozzle/discharge pipeline (3212), the check valve (3210) is in a closed state;

the valve rod (3214) and the valve core (3213) are coaxially arranged, one end of the valve rod (3214) is fixedly connected with the valve core (3213), and the other end extends out of the valve housing (3211).

The technical scheme is further improved and optimized.

The opening and closing component (3220) comprises guide posts (3221) and a linkage plate (3222), the guide direction of the guide posts (3221) is parallel to the extending direction of the sliding plate (3122), the guide posts (3221) are fixedly mounted on the fastening support (3121), and two groups of guide posts (3221) are arranged in the direction perpendicular to the ground and are respectively positioned on one side of the fastening support (3121) in the direction perpendicular to the ground;

the extending direction of the linkage plate (3222) is perpendicular to the ground, the linkage plate (3222) is movably mounted outside the guide pillar (3221) and forms sliding guide fit between the guide pillar and the guide pillar, a linkage hole (3223) with the guiding direction perpendicular to the ground is further formed in the linkage plate (3222), the free end of the traction pin (3128) penetrates through the traction hole (3124) and is located in the linkage hole (3223), and the traction pin (3128) runs and can drive the linkage plate (3222) to displace along the guiding direction of the guide pillar (3221) through the fit with the linkage hole (3223).

The technical scheme is further improved and optimized.

The opening and closing component (3220) further comprises a housing, a gear shaft and an opening and closing plate (3224), the housing is of a shell structure provided with an inner cavity and is fixedly installed at the top of the fastening support (3121), and the free end of the valve rod (3214) extends into the housing;

the axial direction of the gear shaft is parallel to the extending direction of the valve rod (3214), the gear shaft is movably arranged in the housing and can rotate around the self axial direction, two groups of gear shafts are arranged along the direction vertical to the ground and are a first gear shaft and a second gear shaft from bottom to top in sequence, and the power input end of the first gear shaft extends out of the housing;

a first power transmission part (3225) is arranged between the first gear shaft and the second gear shaft, power is transmitted and connected through the first power transmission part (3225), a second power transmission part (3226) is arranged between the second gear shaft and the valve rod (3214), power is transmitted and connected through the second power transmission part (3226), and the first power transmission part (3225) and the second power transmission part (3226) are both gear speed increasing structures;

the extending direction of the opening and closing plate (3224) is perpendicular to the axial direction of the gear shaft, a swinging hole with the guiding direction parallel to the extending direction of the opening and closing plate (3224) is further arranged on the opening and closing plate, a rotating hole is formed in the top end of the opening and closing plate (3224), and the rotating hole is fixedly sleeved outside the power input end of the first gear shaft;

the top end of the linkage plate (3222) is provided with a swing protrusion, the free end of the swing protrusion is positioned in a swing hole arranged at the top end of the opening and closing plate (3224), and when the linkage plate (3222) displaces along the guiding direction of the guide post (3221), the linkage plate drives the opening and closing plate (3224) to axially rotate around the gear shaft through the matching between the swing protrusion and the swing hole;

when the traction pin (3128) moves between the lower contact point three and the upper contact point one, the check valve (3210) is in an open state, when the traction pin (3128) moves between the upper contact point one and the upper contact point three, the check valve (3210) is switched from the open state to the closed state, when the traction pin (3218) moves between the upper contact point three and the lower contact point one, the check valve (3210) is in the closed state, and when the traction pin (3218) moves between the lower contact point one and the lower contact point three, the check valve (3210) is switched from the closed state to the open state.

Compared with the prior art, the invention has the advantages that the sucking and delivering mechanism adopts a packing auger sucking and delivering mode to suck and deliver the slurry into the pushing device, the pushing device adopts a pushing mode to deliver the slurry into the storage equipment, and the power connecting mechanism arranged between the sucking and delivering mechanism and the pushing device can enable the sucking and delivering mechanism and the pushing device to form a reciprocating cycle process of sucking and delivering the slurry and pushing the slurry into the storage equipment, so that the whole slurry sucking process is more convenient and faster; the gathering plate arranged at the bottom end of the packing auger can gather the slurry to the position near the bottom end of the packing auger, so that the packing auger can conveniently absorb the slurry; the protective cover frame arranged at the bottom end of the suction and delivery cylinder can prevent the auger/gathering plate from being damaged by contact collision with the wall part of the pit; in addition, the equipment can be installed on running vehicles such as tractors for use, and can also be manually lifted by operators for use, so that the equipment is more convenient for complex environment work.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic structural view of the suction mechanism of the present invention.

Fig. 4 is a schematic structural view of the suction mechanism of the present invention.

Fig. 5 is a schematic structural view of the suction member of the present invention.

Fig. 6 is a schematic structural diagram of the pushing device of the present invention.

Fig. 7 is a schematic structural diagram of the slurry pushing mechanism of the present invention.

Fig. 8 is a schematic structural view of the push pump of the present invention.

Fig. 9 is a schematic structural diagram of the stent body of the present invention.

Fig. 10 is a schematic structural view of the push pump body of the present invention.

FIG. 11 is a schematic cross-sectional view of the thrust pump body of the present invention.

Fig. 12 is a schematic structural view of the pushing member of the present invention.

Fig. 13 is a schematic view of the sliding plate, the sliding bracket and the connecting member of the present invention.

FIG. 14 is a schematic view of the engagement between the belt drive assembly and the slide plate of the present invention.

Fig. 15 is a schematic structural view of the unidirectional conveying mechanism of the present invention.

Fig. 16 is a schematic view of the structure of the check valve of the present invention.

FIG. 17 is a schematic cross-sectional view of a check valve of the present invention.

Fig. 18 is a schematic structural view of the opening/closing member of the present invention.

Fig. 19 is a schematic structural view of the power transmission member i/ii of the present invention.

FIG. 20 is a schematic diagram of the combination of the auger, the power connection mechanism and the belt drive assembly of the present invention.

Fig. 21 is a schematic structural view of the power connection mechanism of the present invention.

Detailed Description

The invention has the advantages that the suction and delivery mechanism adopts a packing auger suction and delivery mode to suck and deliver the slurry into the pushing device, the pushing device adopts a pushing mode to deliver the slurry into the storage equipment, and the power connecting mechanism arranged between the suction and delivery mechanism and the pushing device can enable the suction and delivery mechanism and the pushing device to form a reciprocating cycle process of slurry suction and delivery and slurry pushing into the storage equipment, so that the whole slurry suction process is more convenient and faster; the gathering plate arranged at the bottom end of the packing auger can gather the slurry to the position near the bottom end of the packing auger, so that the packing auger can conveniently absorb the slurry; the protective cover frame arranged at the bottom end of the suction and delivery cylinder can prevent the auger/gathering plate from being damaged by contact collision with the wall part of the pit; in addition, the equipment can be installed on running vehicles such as tractors for use, and can also be manually lifted by operators for use, so that the equipment is more convenient for complex environment work.

The double-pressurization slurry suction and conveying equipment comprises a fixed shell 100, wherein the fixed shell 100 is of a shell structure with one open end and one closed end, a fixed end cover is installed at the open end of the fixed shell 100 in a matching manner, the fixed shell 100 can be vertically hung and installed on a tractor and other advancing equipment, a handle 110 convenient for an installer to manually lift is arranged outside the fixed shell 100, a suction and delivery mechanism 200 and a pushing device 300 are arranged in the fixed shell 100, a sludge suction end of the suction and delivery mechanism 200 penetrates through the closed end of the fixed shell 100 and extends out of the fixed shell 100, the suction and delivery mechanism 200 is used for sucking and conveying slurry into the pushing device 300, a sludge discharge end of the pushing device 300 penetrates through the fixed end cover and extends out of the fixed shell 100 and is communicated with storage equipment for storing slurry, the pushing device 300 is used for pushing the slurry into the storage equipment, a power connecting mechanism 400 is arranged between the suction and delivery mechanism 200 and the pushing device 300, the power connection mechanism 400 is used for receiving the power generated by the operation of the suction mechanism 200 and transmitting the power to the pushing device 300, so that a reciprocating cycle process of sucking and conveying the slurry and pushing the slurry into the storage device is formed between the suction mechanism 200 and the pushing device 300.

The staff makes the mud end of inhaling of mechanism 200 stretch into inside the mud, inhale mechanism 200 operation and absorb mud and finally carry mud to pusher 300 in, pusher 300 operates and with mud propelling movement to storage facilities in, wherein power coupling mechanism 400 makes and constitutes a mud between mechanism 200 and the pusher 300 and absorbs the reciprocal cycle process of carrying, mud propelling movement to storage facilities, in addition, this equipment can hang and install on advancing equipment such as tractor, also can directly carry by operating personnel and move the use.

The suction and delivery mechanism 200 comprises a motor 210, an installation shell 220, a suction and delivery cylinder 230 and a suction and delivery piece 240, wherein the installation shell 220 is a shell structure provided with an inner cavity and is fixedly installed in the fixed shell 100, the motor 210 is fixedly installed in the fixed shell 100 and is positioned above the installation shell 220, the axial direction of an output shaft of the motor is vertical to the ground, and the power output end of the motor extends into the installation shell 100.

The suction and delivery cylinder 230 is a circular pipe structure with openings at two ends, the suction and delivery cylinder 230 is fixedly installed at the bottom of the installation shell 220, the suction and delivery cylinder 230 and the motor 210 are coaxially arranged, the bottom end of the suction and delivery cylinder 230 penetrates through the closed end of the fixed shell 100 and extends out of the fixed shell 100, a connecting nozzle 231 is arranged outside the suction and delivery cylinder 230, and the connecting nozzle 231 is close to the installation shell 220.

The sucking and sending part 240 comprises an auger 241, the auger 241 is coaxially and movably arranged in the sucking and sending cylinder 230, the top end of the auger 241 extends into the mounting shell 220 and is coaxially and fixedly connected with the motor 210, the bottom end of the auger 241 extends out of the sucking and sending cylinder 230, and the auger 241 rotates and can convey slurry towards the direction of the connecting nozzle 231.

An operator extends the bottom end of the packing auger 241 into the slurry, then the motor 210 operates and pulls the packing auger 241 to rotate around the axial direction of the packing auger 241, and the packing auger 241 rotates and conveys the slurry towards the connecting nozzle 231.

Preferably, in the process that the packing auger 241 rotates and conveys the slurry to the direction of the connecting nozzle 231, in order to enable the packing auger 241 to absorb the slurry more conveniently, the bottom end of the packing auger 241 is provided with the gathering plate 242, the large surface of the gathering plate 242 is parallel to the axial direction of the packing auger 241 and is fixed at the bottom end of the packing auger 241, the distance between the gathering plate 242 and the axial core line of the packing auger 241 is increased progressively along the rotating direction of the packing auger 241 absorbing the slurry, the gathering plate 242 is arrayed vertically for a plurality of groups along the circumferential direction of the packing auger 241, and when the packing auger 241 rotates to absorb the slurry, the gathering plate 242 synchronously rotates and gathers the slurry near the bottom end of the packing auger 241.

Preferably, in order to prevent the wall of the pit or pond where the slurry is located from contacting and colliding with the collecting plate 242 and the bottom end of the packing auger 241 and damaging the collecting plate 242 and the bottom end of the packing auger 241, the bottom end of the suction and delivery cylinder 230 is provided with a protective cover frame 243, and the bottom end of the packing auger 241 and the collecting plate 242 are both located in the protective cover frame 243.

The pushing device 300 comprises a mud pushing mechanism 310 and a one-way conveying mechanism 320, the mud pushing mechanism 310 is connected and communicated with the connecting nozzle 231, the mud pushing mechanism 310 is used for receiving the mud sucked and conveyed by the sucking and conveying mechanism 200 and pushing the mud into the one-way conveying mechanism 320, and the one-way conveying mechanism 320 is used for conveying the mud into the storage equipment in a one-way mode.

The mud pushing mechanism 310 includes a pushing pump 3110 and a pushing member 3120, the pushing pump 3110 is configured to receive the mud sucked and conveyed by the sucking mechanism 200 and push the mud into the one-way conveying mechanism 320, and the pushing member 3120 is configured to drive the pushing pump 3110 to perform a mud pushing operation.

The propelling movement pump 3110 include the support spare, the propelling movement pump body, the support spare includes fixed bolster 3111, movable support 3112, fixed bolster 3111 fixed mounting is in fixed casing 100 and on it fixed guide post 3113 that is provided with direction of guidance perpendicular to ground, movable support 3112 movable mounting constitutes the sliding guide cooperation in guide post 3113 outside and between the two.

The propelling movement pump body include pump case 3114, sliding barrel 3116, piston 3117, piston rod 3118, pump case 3114 is vertical arrangement and upper end opening, lower extreme confined cylindrical structure, the blind end fixed mounting of pump case 3114 is in the top of fixed bolster 3111, the outside of pump case 3114 still is provided with switch-on mouth 3115 and switch-on mouth 3115 is close to the open end of pump case 3114, switch-on mouth 3115 is connected the switch-on with connecting mouth 231, the blind end of pump case 3114 has still seted up wear-to-establish hole one coaxially.

The sliding barrel 3116 is a vertically arranged cylindrical structure with an open upper end and a closed lower end, the sliding barrel 3116 is coaxially arranged in the pump housing 3114, a sealed sliding guide fit is formed between the sliding barrel 3116 and the pump housing 3114, the initial position of the sliding barrel 3116 is located between the switch-on nozzle 3115 and the closed end of the pump housing 3114, and a second through hole is coaxially formed in the closed end of the sliding barrel 3116.

The piston 3117 is coaxially arranged in the sliding barrel 3116, a sealed sliding guide fit is formed between the piston 3118 and the sliding barrel 3116, the piston 3118 and the pump housing 3114 are coaxially arranged, one end of the piston 3118 is fixedly connected with the piston 3117, and the other end of the piston 3118 penetrates through the two or one of the through holes and is fixedly connected with the sliding support 3112.

The partial outside that the piston rod 3118 is located pump case 3114 below installs the conflict piece with threaded connection, the outside of piston rod 3118 still overlaps and is equipped with stroke spring 3119, the one end of stroke spring 3119 is contradicted with the conflict piece, the other end passes the perforation and is contradicted with smooth section of thick bamboo 3116 blind end together, the elasticity of stroke spring 3119 orders about smooth section of thick bamboo 3116 and makes ascending motion.

The one-way conveying mechanism 320 is connected to the open end of the pump housing 3114.

When the motor 210 operates and rotates the packing auger 241 and conveys the slurry into the sliding barrel 3116 through the connecting nozzle 231 and the connecting nozzle 3115, the power connecting mechanism 400 operates the pushing member 3120 and drives the piston rod 3118 to move up and down, wherein during the process that the piston rod 3118 moves up, the piston rod 3118 firstly pulls the sliding barrel 3116/the piston 3117 to move up synchronously, and during the process, the sliding barrel 3116 closes the connecting position between the connecting nozzle 3115 and the pump housing 3114, when the open end of the sliding barrel 3116 rises to be in contact with the one-way conveying mechanism 320 and cannot rise continuously, the piston rod 3118 moves up and continues to pull the piston 3117 to move up synchronously and push the slurry into the one-way conveying mechanism 311320 through the open end of the pump housing 3114, and simultaneously because the sliding barrel 3116 cannot rise, the piston rod 3117 moves up to make the stroke spring 9 in a compressed state; during the descending process of the piston rod 3118, the sliding barrel 3116 is at rest first, when the piston 3117 descends and returns to its position relationship with the sliding barrel 3116, the stroke spring 3119 returns to normal state, and then the piston rod 3118 descends to pull the sliding barrel 3116/piston 3117 to descend synchronously and finally return to the initial position, and so on.

The pushing member 3120 comprises a fastening support 3121, a sliding plate 3122 and a belt transmission assembly 3127, the fastening support 3121 is fixed on the fixed support 3111, a guide rod 3123 with a guide direction perpendicular to the ground is arranged on the fastening support 3121, the sliding plate 3122 is horizontally movably mounted outside the guide rod 3123, the two groups of the guide rod 3123 form a sliding guide fit, and the sliding plate 3122 is provided with a traction hole 3124 with a guide direction parallel to the extending direction of the sliding plate 3122.

Slide 3122 and sliding support 3112 between be provided with the connecting piece and be connected through the connecting piece between the two, it is specific, the connecting piece includes guide arm 3125, buffer spring 3126, guide arm 3125 is vertical to be fixed in on the sliding support 3112, the guide hole has been seted up on slide 3122 and slide 3122 locates the guide arm 3125 outside through the guide hole movable sleeve, and the guide arm 3125 bottom is provided with limit bolt, constitute the slip guide cooperation between guide hole and the guide arm 3125, buffer spring 3126 overlaps locates the guide arm 3125 outside, buffer spring 3126's top is contradicted with sliding support 3112, the bottom is contradicted with slide 3122, buffer spring 3126's elasticity orders about slide 3122 and is descending motion, preferably, the connecting piece is provided with two sets ofly and is located slide 3122 along the one end of self extending direction respectively.

The belt transmission assembly 3127 includes a driving/driven belt wheel and a transmission belt, the driving belt wheel is located above the driven belt wheel, the diameters of the driving belt wheel and the driven belt wheel are the same, the axial direction of the driving/driven belt wheel is parallel to the ground and perpendicular to the extending direction of the sliding plate 3122, both the driving belt wheel and the driven belt wheel are movably mounted on the fastening support 3121 and can rotate around the self axial direction, the transmission belt is arranged between the driving/driven belt wheel, a traction pin 3128 is horizontally arranged on the transmission belt, and the free end of the traction pin 3128 passes through the traction hole 3124.

The contact point of the tangential direction perpendicular to the ground of the driving belt wheel and the driving belt has two groups and is an upper contact point I and an upper contact point III respectively, the contact point of the tangential direction parallel to the ground of the driving belt wheel and the driving belt has one group and is an upper contact point II, the contact point of the tangential direction perpendicular to the ground of the driven belt wheel and the driving belt has two groups and is a lower contact point I and a lower contact point III respectively, the contact point of the tangential direction parallel to the ground of the driven belt wheel and the driving belt has one group and is a lower contact point II, and in the operation process of the belt transmission assembly 3127, the traction pin 3128 can pass through the lower contact point I, the lower contact point II, the lower contact point III, the upper contact point I, the upper contact point II and the upper contact point III in sequence.

While the motor 210 is running, the power connection mechanism 400 receives the power of the motor and synchronously runs the belt transmission assembly 3127, and the belt transmission assembly 3127 runs and synchronously moves the traction pin 3128 along with the transmission belt;

in the process that the traction pin 3128 moves from the lower contact point two to the upper contact point two, the traction pin 3128 is matched with the traction hole 3124 and makes the sliding plate 3122 move upward, wherein between the lower contact point two and the lower contact point three, the sliding plate 3122 moves upward and makes the buffer spring 3126 in a compressed state and the sliding support 3112/the piston rod 3118 is stationary, between the lower contact point three and the upper contact point one, the sliding plate 3122 moves upward and pulls the sliding support 3112/the piston rod 3118 to move synchronously upward, and while the traction pin 3128 moves to the upper contact point one, the piston 3117 is contacted with the one-way conveying mechanism 320, that is, the piston rod 3118 cannot move upward continuously, between the upper contact point one and the upper contact point two, the sliding plate 3122 moves upward and makes the buffer spring 3126 in a compressed state and the sliding support 3112/the piston rod 3118 is stationary;

during the process that the traction pin 3128 moves from the upper contact point two to the lower contact point two, the traction pin 3128 is engaged with the traction hole 3124 and the sliding plate 3122 moves downward, wherein between the upper contact point two and the upper contact point three, the sliding plate 3122 moves downward and reduces the compression amount of the buffer spring 3126 and the sliding support 3112/the piston 3118 is stationary, between the upper contact point three and the lower contact point one, the sliding plate 3122 moves downward and draws the sliding support 3112/the piston 3118 to move downward synchronously, and while the traction pin 3128 moves to the lower contact point one, the sliding support 3112 has descended to the lowest point and the sliding cylinder 3116/the piston 3117 descends to the initial position, between the lower contact point one and the lower contact point two, the sliding plate 3122 moves downward and reduces the compression amount of the buffer spring 3126 continuously and finally returns the buffer spring 3126 to the normal state, and the sliding support 3122/the piston 3118 is stationary.

The one-way conveying mechanism 320 comprises a one-way valve 3210 and an opening and closing member 3220, the one-way valve 3210 is configured to receive the slurry pushed by the pushing member 3120, an operation state of the one-way valve 3210 can be divided into an open state in which the slurry flows inside and can smoothly pass through, and a closed state in which the inside is blocked and the slurry cannot pass through, and the opening and closing member 3220 is configured to be triggered by the pushing member 3120 and control the operation state switching of the one-way valve 3210.

The check valve 3210 includes a valve housing 3211, a discharge pipeline 3212, a valve core 3213, and a valve rod 3214, the valve housing 3211 is a cylindrical structure with openings at both ends, and the two open ends are all matched with each other to install a valve cover, the axial direction of the valve housing 3211 is parallel to the axial direction of the driving pulley of the belt transmission assembly 3127, the valve housing 3211 is fixedly installed in the fixed housing 100, and the bottom of the valve housing 3211 is provided with a fixed nozzle and the fixed nozzle is connected and communicated with the open end of the pump housing 3114.

The discharge pipeline 3212, the pump casing 3114 and the fixed nozzle are coaxially arranged, the bottom end of the discharge pipeline 3212 is connected and communicated with the top of the valve casing 3211, the top end of the discharge pipeline penetrates through the fixed end cover and extends out of the fixed casing 100, a connecting pipe is arranged between the top end of the discharge pipeline 3212 and the storage device, and slurry is conveyed through the connecting pipe.

The valve core 3213 is a cylindrical structure, the valve core 3213 is coaxially disposed in the valve housing 3211, and a sealed rotation fit is formed between the valve core and the valve housing 3211, a valve hole 3215 penetrating through the radial thickness of the valve core 3213 is disposed on the outer circumferential surface of the valve core 3213, when the valve hole 3215 is connected to the fixed nozzle/discharge pipe 3212, the check valve 3210 is opened, and when the valve hole 3215 is not in contact with the fixed nozzle/discharge pipe 3212, the check valve 3210 is closed.

The valve rod 3214 and the valve core 3213 are coaxially arranged, one end of the valve rod 3214 is fixedly connected with the valve core 3213, and the other end extends out of the valve housing 3211.

The opening and closing member 3220 is triggered by the pushing member 3120 to rotate the valve rod 3214, and the valve rod 3214 rotates to pull the valve core 3213 to rotate synchronously, so that the communication state between the valve hole 3215 and the fixed nozzle/discharge pipe 3212 changes, i.e., the movement state of the check valve 3210 is changed.

The opening and closing member 3220 includes two guide posts 3221 and a linkage plate 3222, a guiding direction of the guide posts 3221 is parallel to an extending direction of the sliding plate 3122, and the guide posts 3221 are fixedly mounted on the fastening support 3121, and two sets of the guide posts 3221 are disposed along a direction perpendicular to the ground and are respectively located at one side of the fastening support 3121 along the direction perpendicular to the ground.

The extending direction of the linkage plate 3222 is perpendicular to the ground, the linkage plate 3222 is movably mounted outside the guide pillar 3221, and a sliding guiding cooperation is formed between the guide pillar 3221 and the linkage plate 3222, a linkage hole 3223 is further formed in the linkage plate 3222, the guiding direction of the linkage hole 3223 is perpendicular to the ground, the free end of the traction pin 3128 passes through the traction hole 3124 and is located in the linkage hole 3223, and the traction pin 3128 operates and can drive the linkage plate 3222 to displace along the guiding direction of the guide pillar 3221 by cooperation with the linkage hole 3223.

The opening and closing member 3220 further includes a casing, a gear shaft, and an opening and closing plate 3224, the casing is a casing structure provided with an inner cavity and is fixedly mounted on the top of the fastening support 3121, and the free end of the valve rod 3214 extends into the casing.

The axial direction of the gear shaft is parallel to the extending direction of the valve rod 3214, the gear shaft is movably arranged in the housing and can rotate around the self axial direction, two groups of gear shafts are arranged along the direction perpendicular to the ground and are a first gear shaft and a second gear shaft from bottom to top in sequence, and the power input end of the first gear shaft extends out of the housing.

A first power transmission part 3225 is arranged between the first gear shaft and the second gear shaft, power connection transmission is performed between the first power transmission part 3225 and the second gear shaft, a second power transmission part 3226 is arranged between the second gear shaft and the valve rod 3214, power connection transmission is performed between the second gear shaft and the valve rod through the second power transmission part 3226, and particularly, the first power transmission part 3225 and the second power transmission part 3226 are both gear speed increasing structures.

The extending direction of the opening and closing plate 3224 is perpendicular to the axial direction of the gear shaft, the opening and closing plate 3224 is further provided with a swing hole, the guiding direction of which is parallel to the extending direction of the opening and closing plate 3224, and the top end of the opening and closing plate 3224 is provided with a rotary hole and is fixedly sleeved outside the power input end of the first gear shaft through the rotary hole.

The top end of the linkage plate 3222 is provided with a swing protrusion, and the free end of the swing protrusion is located in a swing hole formed in the top end of the opening and closing plate 3224, and when the linkage plate 3222 is displaced along the guiding direction of the guide pillar 3221, the linkage plate 3222 drives the opening and closing plate 3224 to axially rotate around the gear shaft through the cooperation between the swing protrusion and the swing hole.

When the towing pin 3128 moves between the first lower contact point three and the first upper contact point, the check valve 3210 is in an open state, when the towing pin 3128 moves between the first upper contact point three and the third upper contact point, the check valve 3210 is switched from the open state to the closed state, when the towing pin 3218 moves between the third upper contact point and the first lower contact point, the check valve 3210 is in the closed state, and when the towing pin 3218 moves between the first lower contact point and the third lower contact point, the check valve 3210 is switched from the closed state to the open state.

When the traction pin 3128 moves between the first lower contact point and the third lower contact point, the traction pin 3128 cooperates with the linkage hole 3223 and drives the linkage plate 3222 to synchronously displace along the guiding direction of the guide post 3221 and the displacement direction is directed to the third lower contact point from the first lower contact point, the linkage plate 3222 moves and drives the opening and closing plate 3224 to axially rotate around the gear shaft through the cooperation between the swing protrusion and the swing hole, so that the valve rod 3214 is driven to rotate through the first power transmission part 3225/the second power transmission part 3226, the valve rod 3214 rotates and finally the check valve 3210 is switched from the closed state to the open state, and when the traction pin 3128 is located at the third lower contact point, the check valve 3210 is switched to the open state;

when the towing pin 3128 moves between the third lower contact point and the first upper contact point, the one-way valve 3210 is always in an open state because the guiding direction of the linkage hole 3223 is consistent with the displacement direction of the towing pin 3128;

when the traction pin 3128 moves between the upper contact point one and the upper contact point three, the traction pin 3128 cooperates with the linkage hole 3223 and drives the linkage plate 3222 to synchronously displace along the guiding direction of the guide post 3221 and the displacement direction is directed from the upper contact point one to the upper contact point three, finally the valve rod 3214 rotates and the rotation direction is opposite to the rotation direction of the valve rod 3214 when the traction pin 3128 moves between the lower contact point one and the lower contact point three, so that the check valve 3210 is switched from the open state to the closed state, and when the traction pin 3128 is located at the upper contact point three, the check valve 3210 is switched to the closed state;

when the traction pin 3218 moves between the upper contact point three and the lower contact point one, the check valve 3210 is always in a closed state.

The power connection mechanism 400 is arranged between the packing auger 241 and the belt transmission component 3127, the power connection mechanism 400 includes a first transmission shaft 410 and a second transmission shaft 420, the axial direction of the first transmission shaft 410 is parallel to the ground and perpendicular to the axial direction of the driving belt pulley of the belt transmission component 3127, the first transmission shaft 410 is movably installed in the installation housing 220 and can rotate around the axial direction of the first transmission shaft, the axial direction of the second transmission shaft 420 is parallel to the axial direction of the driving belt pulley of the belt transmission component 3127, the second transmission shaft 420 is movably installed in the installation housing 220 and can rotate around the axial direction of the second transmission shaft, and the power output end of the second transmission shaft 420 extends out of the installation housing 220 and is located on one side of the installation housing 220 facing the belt transmission component 3127.

The device comprises a transmission assembly 3127, and is characterized in that a first power connecting piece 430 is arranged between the first transmission shaft 410 and the auger 241, power connection transmission is performed between the first transmission shaft 430 and the auger 241 through the first power connecting piece 430, a second power connecting piece 440 is arranged between the first transmission shaft 410 and the second transmission shaft 420, power connection transmission is performed between the first transmission shaft 440 and the second transmission shaft 440 through the second power connecting piece 440, a third power connecting piece 450 is arranged between the second transmission shaft 420 and a pulley shaft of a driving pulley of the belt transmission assembly 3127, power connection transmission is performed between the third power connecting piece 450 and the pulley shaft of the driving pulley of the belt transmission assembly 3127, specifically, the first power connecting piece 430 and the second power connecting piece 440 are both in an oblique gear structure, and the third power connecting piece 450 is in a belt transmission structure.

When the motor 210 operates and drives the packing auger 241 to rotate, the packing auger 241 rotates and finally pulls the driving pulley of the belt transmission assembly 3127 to rotate through the first power connector 430, the first transmission shaft 410, the second power connector 440, the second transmission shaft 420 and the third power connector 450, namely the belt transmission assembly 3127 operates synchronously with the packing auger 241.

During actual work, an operator enables the bottom end of the packing auger 241 to extend into slurry, then the motor 210 operates and pulls the packing auger 241 to rotate around the self axial direction, the packing auger 241 rotates and conveys the slurry towards the direction of the connecting nozzle 231, in the process, the packing auger 241 rotates and pulls the collecting plate 242 to synchronously rotate and collect the slurry near the bottom end of the packing auger 241, the packing auger 241 is convenient to suck and convey the slurry, and the slurry is finally conveyed into the sliding barrel 3116 through the connecting nozzle 231 and the connecting nozzle 3115;

the auger 241 rotates and simultaneously pulls the belt transmission assembly 3127 to operate through the power connection mechanism 400, the belt transmission assembly 3127 operates and enables the traction pin 3128 to follow the belt to move synchronously, wherein:

when the traction pin 3128 is between the first lower contact point and the third lower contact point, the piston rod 3118 is stationary, the check valve 3210 is switched from the closed state to the open state, and when the traction pin 3128 is at the third lower contact point, the check valve 3210 is switched to the open state;

when the traction pin 3128 is between the third lower contact point and the first upper contact point, the state of the check valve 3210 is unchanged and is always in the open state, the piston rod 3118 will make the ascending movement, during the ascending process of the piston rod 3118, the piston rod 3118 first pulls the sliding barrel 3116/the piston 3117 to ascend synchronously, and during the process, the sliding barrel 3116 will close the connection between the connection nozzle 3115 and the pump housing 3114, when the open end of the sliding barrel 3116 ascends to contact the check valve 3210 and cannot ascend continuously, the piston rod 3118 ascends and continuously pulls the piston 3117 to ascend synchronously and push the slurry into the discharge pipe 3212 through the open end of the pump housing 3114 and the valve hole 3215;

then when the traction pin 3128 is between the first upper contact point and the third upper contact point, the piston rod 3118 is stationary, the check valve 3210 switches from the open state to the closed state, and when the traction pin 3128 is at the third upper contact point, the check valve 3210 switches to the closed state;

when the traction pin 3128 is between the upper contact point three and the lower contact point one, the state of the check valve 3210 is unchanged and is always in a closed state, the piston rod 3118 will make a descending movement, the movable rod 3218 descends and finally the sliding barrel 3116 and the piston 3117 will be restored to the initial position, the slurry will continue to be transported into the sliding barrel 3116, and the sliding barrel 3116 will be filled with the slurry when the traction pin 3128 is at the next contact point one;

in addition, in the process of conveying the slurry into the sliding barrel 3116, the one-way valve 3210 is in a closed state, the slurry in the discharging pipe 3212 does not backflow, and in the process of pushing the slurry into the discharging pipe 3212 by the piston 3117, the one-way valve 3210 is in an open state, in the process, part of the slurry in the discharging pipe 3212 flows back into the sliding barrel 3116 but is finally pushed back into the discharging pipe 3212 along with the slurry in the sliding barrel 3116, so that the pushing of the slurry is not affected.

Claims

1. The mud pushing assembly for lake dredging is characterized by comprising a pushing device (300) arranged in a fixed shell (100), wherein the pushing device (300) is used for receiving mud and pushing and outputting the mud to storage equipment for storing the mud, the pushing device (300) comprises a mud pushing mechanism (310) and a one-way conveying mechanism (320), the mud pushing mechanism (310) is connected and communicated with a suction mechanism (200) for pumping the mud, the mud is pumped and conveyed to the mud pushing mechanism (310) through the suction mechanism (200), the mud pushing mechanism (310) is used for pushing the mud to the one-way conveying mechanism (320), and the one-way conveying mechanism (320) is used for conveying the mud to the storage equipment;

the one-way conveying mechanism (320) comprises a one-way valve (3210) and an opening and closing member (3220), the one-way valve (3210) is used for receiving slurry pushed by the pushing pump (3110), the operation state of the one-way valve (3210) can be divided into an opening state in which the slurry can smoothly pass through and a closing state in which the slurry can not pass through and the inside is blocked, and the opening and closing member (3220) is used for being triggered by the pushing member (3120) and controlling the operation state switching of the one-way valve (3210);

the push pump (3110) comprises a support part and a push pump body, the support part comprises a fixed support (3111) and a movable support (3112), the fixed support (3111) is fixedly arranged in the fixed shell (100) and is fixedly provided with a guide post (3113) with a guide direction perpendicular to the ground, the movable support (3112) is movably arranged outside the guide post (3113) and forms sliding guide fit between the guide post and the guide post;

the piston (3117) is coaxially arranged in the sliding cylinder (3116) and a sealed sliding guide fit is formed between the piston and the sliding cylinder, the piston rod (3118) and the pump shell (3114) are coaxially arranged, one end of the piston rod (3118) is fixedly connected with the piston (3117), and the other end of the piston rod (3118) penetrates through the second through hole and the through hole and is fixedly connected with the sliding support (3112);

2. The mud pushing assembly for lake dredging according to claim 1, wherein the pushing member (3120) comprises a fastening bracket (3121), a sliding plate (3122) and a belt transmission assembly (3127), the fastening bracket (3121) is fixed on the fixed bracket (3111), a guide rod (3123) with a guide direction perpendicular to the ground is provided on the fastening bracket (3121), the sliding plate (3122) is horizontally movably installed outside the guide rod (3123) and forms a sliding guide fit between the two groups, a drawing hole (3124) with a guide direction parallel to the extending direction of the sliding plate (3122) is provided on the sliding plate (3122);

3. The mud pushing assembly for lake dredging according to claim 2, wherein the belt driving assembly (3127) comprises a driving pulley, a driven pulley, and a driving belt, the driving pulley is located above the driven pulley and has a uniform diameter, the driving pulley and the driven pulley are axially parallel to the ground and perpendicular to the extending direction of the sliding plate (3122), both are movably mounted on the fastening bracket (3121) and can axially rotate around the driving pulley and the driven pulley, the driving belt is disposed between the driving pulley and the driven pulley, a traction pin (3128) is horizontally disposed on the driving belt, and the free end of the traction pin (3128) passes through the traction hole (3124);

4. The mud pushing assembly for lake dredging according to claim 3, wherein the check valve (3210) comprises a valve housing (3211), a discharge pipe (3212), a valve core (3213) and a valve rod (3214), the valve housing (3211) is a cylindrical structure with two open ends, the two open ends are respectively and fittingly provided with a valve cover, the axial direction of the valve housing (3211) is parallel to the axial direction of the driving pulley of the belt transmission assembly (3127), the valve housing (3211) is fixedly arranged in the fixed housing (100), the bottom of the valve housing (3211) is provided with a fixed nozzle, and the fixed nozzle is communicated with the open end of the pump housing (3114);

the valve core (3213) is a cylinder structure, the valve core (3213) is coaxially arranged in the valve casing (3211) and forms a sealed rotation fit with the valve casing, a valve hole (3215) penetrating through the radial thickness of the valve core (3213) is arranged on the outer circumferential surface of the valve core (3213), when the valve hole (3215) is communicated with the fixed nozzle and the discharge pipeline (3212), the check valve (3210) is in an open state, and when the valve hole (3215) is not in contact with the fixed nozzle and the discharge pipeline (3212), the check valve (3210) is in a closed state;

5. The mud pushing assembly for dredging the lake according to claim 4, wherein the opening and closing member (3220) comprises guide posts (3221) and a linkage plate (3222), the guiding direction of the guide posts (3221) is parallel to the extending direction of the sliding plate (3122), the guide posts (3221) are fixedly mounted on the fastening bracket (3121), and two groups of the guide posts (3221) are arranged in the direction perpendicular to the ground and are respectively positioned at one side of the fastening bracket (3121) in the direction perpendicular to the ground;

6. The mud pushing assembly for lake dredging according to claim 5, wherein the opening and closing member (3220) further comprises a housing, a gear shaft and an opening and closing plate (3224), the housing is a shell structure provided with an inner cavity and is fixedly arranged at the top of the fastening bracket (3121), and the free end of the valve rod (3214) extends into the housing;

the axial direction of the gear shaft is parallel to the extending direction of the valve rod (3214), the gear shaft is movably arranged in the housing and can rotate around the self axial direction, two groups of gear shafts are arranged along the direction perpendicular to the ground and are a first gear shaft and a second gear shaft from bottom to top in sequence, and the power input end of the first gear shaft extends out of the housing.

7. The mud pushing assembly for lake dredging according to claim 6, wherein a first power transmission member (3225) is arranged between the first gear shaft and the second gear shaft, power connection transmission is performed between the first power transmission member (3225) and the first gear shaft and the second gear shaft, a second power transmission member (3226) is arranged between the second gear shaft and the valve rod (3214), power connection transmission is performed between the second gear shaft and the valve rod through the second power transmission member (3226), and the first power transmission member (3225) and the second power transmission member (3226) are both gear speed increasing structures;

the extending direction of the opening and closing plate (3224) is perpendicular to the axial direction of the gear shaft, a swinging hole with the guiding direction parallel to the extending direction of the opening and closing plate (3224) is further arranged on the opening and closing plate, a rotating hole is formed in the top end of the opening and closing plate (3224), and the power input end of the first gear shaft is fixedly sleeved outside the rotating hole.

8. The mud pushing assembly for lake dredging according to claim 7, wherein the top end of the linkage plate (3222) is provided with a swing protrusion, the free end of the swing protrusion is located in a swing hole formed in the top end of the opening and closing plate (3224), and when the linkage plate (3222) is displaced along the guiding direction of the guide post (3221), the linkage plate (3222) drives the opening and closing plate (3224) to rotate axially around the gear shaft through the cooperation between the swing protrusion and the swing hole;