CN111926781A

CN111926781A - Reduce water sluicegate device of keeping mediation of gate slot influence

Info

Publication number: CN111926781A
Application number: CN202010879707.XA
Authority: CN
Inventors: 肖文弯
Original assignee: Lishui Liandu Crystal Intelligent Technology Co ltd
Current assignee: JIANGXI DINGHAI WATER MACHINERY EQUIPMENT Co.,Ltd.
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-11-13
Anticipated expiration: 2040-08-27
Also published as: CN111926781B

Abstract

The invention discloses a water conservancy gate device capable of keeping dredging and reducing influence of a gate slot, which comprises a building body, wherein a water channel with an upward opening is arranged at the top end of the building body, a gate door frame is fixedly arranged at the front end of the water channel, gate slots with openings towards the water channel are symmetrically arranged on the left side and the right side of the inner wall of the gate door frame, a gate track is fixedly arranged on the end wall of the gate slot far away from the water channel, a gate is connected in the gate door frame in a sliding manner and is in power connection with the bottom end of a gate opening device, upper pull ropes are fixedly arranged on the left side and the right side of the top surface of the gate in a bilateral symmetry manner, one end of each upper pull rope far away from the water channel sequentially bypasses reels arranged in the bilateral symmetry manner and is fixedly connected with the top surface of a sliding block, the sliding block is positioned in the.

Description

Reduce water sluicegate device of keeping mediation of gate slot influence

Technical Field

The invention relates to the related technical field of water conservancy gates, in particular to a device for keeping dredging a water conservancy gate, which reduces the influence of a gate slot.

Background

The gate is used for closing and opening the control facility of the drainage (discharging) water channel. The important components of hydraulic buildings can be used for intercepting water flow, controlling water level, regulating flow, discharging silt and floating objects and the like.

The lower pressure vortex is generated at the gate slot by the lower drainage flow, the flood discharge capacity is influenced, the water flow cavitation is promoted, the gate slot is easily subjected to cavitation erosion, more impurities are contained in the lower drainage flow, the gate is easily blocked due to untimely dredging, and the flood discharge capacity is reduced.

Disclosure of Invention

Aiming at the technical defects, the invention provides a device for keeping dredging of a water conservancy gate, which reduces the influence of a gate slot and can overcome the defects.

The invention relates to a water conservancy gate device capable of keeping dredging and reducing influence of a gate slot, which comprises a building body, wherein a water channel with an upward opening is arranged at the top end of the building body, a gate door frame is fixedly arranged at the front end of the water channel, gate slots with openings towards the water channel are symmetrically arranged on the left side and the right side of the inner wall of the gate door frame, a gate track is fixedly arranged on the end wall of each gate slot far away from the water channel, a gate is connected in the gate door frame in a sliding manner and is in power connection with the bottom end of a gate opening device, upper pull ropes are symmetrically and fixedly arranged on the top surface of the gate, one ends of the upper pull ropes far away from the water channel sequentially bypass reels symmetrically arranged on the left side and the right side and are fixedly connected with the top surface of a sliding block, the sliding block is positioned in the sliding manner and is in sliding connection with the sliding block, a, the piston is located the atmospheric pressure intracavity and rather than sliding connection, atmospheric pressure chamber bottom end is fixed and is provided with the trachea, the trachea is close to the one end and the flexible gasbag bottom fixed connection of dog of water course, the flexible gasbag bottom surface of dog is fixed to be set up on dog spout diapire, sliding connection has the dog in the dog spout, the dog bottom surface with the flexible gasbag top fixed connection of dog.

Preferably, the gate is slidably connected with the left gate track and the right gate track, the reels are arranged in reel grooves in a bilateral symmetry manner, the reel grooves are arranged at the top ends of the supporting blocks, the openings of the reel grooves are upward, the supporting blocks are fixedly arranged on the top surface of the outer frame of the gate frame in a bilateral symmetry manner, the top surfaces of the sliding blocks are connected with the sliding block chutes through sliding block springs, and the top surfaces of the pistons are connected with the air pressure cavities through piston springs.

Preferably, the dredging starting mechanism comprises a tensioning inclined block arranged at the bottom end of the sliding block sliding groove, the tensioning inclined block can be connected with the sliding block in a sliding manner, a belt cavity is arranged at one end, away from the brake opening device, of the tensioning inclined block, the end face, away from the brake opening device, of the tensioning inclined block is connected with the belt cavity through a tensioning inclined block spring, a lower belt wheel is arranged at the bottom end of the belt cavity, the lower belt wheel is fixedly connected with a front motor shaft, the front motor shaft is rotatably connected with the building body, one end, away from the brake opening device, of the front motor shaft is in power connection with a front motor, an upper belt wheel positioned on the upper side of the lower belt wheel is arranged in the belt cavity, the upper belt wheel is connected with the lower belt wheel through a belt, the upper belt wheel is fixedly connected with a winder shaft, and the winder shaft is connected with the, the winder shaft is far away from one end of the switching-off device, a winder is fixedly arranged at one end of the winding-off device, the winder is located in a winder cavity, and a switching-off starting mechanism is arranged on the rear side of the winder cavity.

Preferably, the starting mechanism that opens the floodgate include with the back stay cord that the spooler chamber is connected, back stay cord rear end is walked around in proper order the wire winding pole that the longitudinal symmetry set up and is kept away from with the sliding door the terminal surface fixed connection of water course, the wire winding pole is located the wire winding pole intracavity, the sliding door be located the opening to in the sliding door spout of water course and rather than sliding connection, the sliding door is kept away from the terminal surface of water course with through sliding door spring coupling between the sliding door spout, sliding door spout rear end wall is provided with the forward sloping block spout of opening, the sloping block spout is kept away from the fixed metal block that is provided with of end wall of water course, be provided with dredging mechanism in the sloping block spout.

Preferably, the dredging mechanism comprises an inclined block which is arranged in the inclined block chute and is in sliding connection with the inclined block chute, the rear end face of the inclined block is connected with the inclined block chute through an inclined block spring, one end of the inclined block, which is close to the water channel, is provided with a dredging brush rod groove which is opened towards the water channel, a dredging brush rod is arranged in the dredging brush rod groove, the rear end wall of the dredging brush rod groove is provided with a push block chute which is opened towards the water channel, a push block is in sliding connection with the push block chute, the end face of the push block, which is far away from the water channel, is connected with the push block chute through a push block spring, the end wall of the push block chute, which is far away from the water channel, is fixedly provided with an electromagnet, the metal block can be connected with a circuit between the electromagnet and a power supply thereof, the front end face of the push block, which, the annular groove is connected with an annular column in a sliding mode, the rear end face of the dredging brush rod is fixedly connected with the front end face of the annular column, a telescopic air bag groove with a forward opening is formed in the supporting rod, a reciprocating telescopic air bag is fixedly connected between the telescopic air bag groove and the dredging brush rod, and a pneumatic reciprocating mechanism is arranged on the rear side of the reciprocating telescopic air bag.

Preferably, pneumatic reciprocating mechanism include with reciprocal flexible gasbag rear end fixed connection's hose, the hose be located the opening to the hose inslot of water course, the hose rear end is fixed to be provided with the cam chamber, cam intracavity sliding connection has reciprocating piston, reciprocating piston preceding terminal surface with through reciprocating piston spring coupling between the cam chamber, cam chamber rear end bilateral symmetry is provided with two cams, the cam with reciprocating piston rear end face sliding connection controls the cam all with camshaft fixed connection, the camshaft with the sloping block rotates and connects, the camshaft is close to the one end power connection of water course has the rear motor.

The beneficial effects are that: the device can automatically block the gate slot with the corresponding height when the gate is opened, thereby reducing low-pressure vortex generated by the downward-discharging water flow at the gate slot, reducing the influence on the flood discharging capacity, slowing or avoiding water flow cavitation, protecting the gate slot from cavitation damage, prolonging the service life of the water conservancy gate device, dredging the gate in time, avoiding gate blockage caused by pushing impurities contained in the downward-discharging water flow, and further ensuring the flood discharging capacity.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a device for maintaining dredging of a water gate according to the present invention, which reduces the influence of a gate slot;

FIG. 2 is a partial schematic view of A-A of FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a partial schematic view of B-B in FIG. 2 according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view of the structure at C in fig. 2 according to the embodiment of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a water conservancy gate device capable of keeping dredging and reducing gate slot influence, which comprises a building body 10, wherein a water channel 51 with an upward opening is arranged at the top end of the building body 10, a gate door frame 19 is fixedly arranged at the front end of the water channel 51, gate slots 40 with openings towards the water channel 51 are symmetrically arranged on the left side and the right side of the inner wall of the gate door frame 19, a gate track 31 is fixedly arranged on the end wall of the gate slot 40 far away from the water channel 51, a gate 32 is connected in the gate door frame 19 in a sliding manner, the gate 32 is in power connection with the bottom end of a gate opening device 17, upper pull ropes 14 are fixedly arranged on the top surface of the gate 32 in a bilaterally symmetrical manner, one end of the upper pull ropes 14 far away from the water channel 51 sequentially bypasses winding wheels 15 symmetrically arranged on the left side and the right side to be fixedly connected with the top surface of a slide block 21, the bottom surface of the sliding block 21 is fixedly provided with a lower pulling rope 22, the bottom end of the lower pulling rope 22 is fixedly connected with the top surface of a piston 38, the piston 38 is positioned in a pneumatic cavity 34 and is in sliding connection with the pneumatic cavity, the bottom end of the pneumatic cavity 34 is fixedly provided with an air pipe 35, one end, close to the water channel 51, of the air pipe 35 is fixedly connected with the bottom end of a stopper telescopic air bag 37, the bottom surface of the stopper telescopic air bag 37 is fixedly arranged on the bottom wall of a stopper sliding groove 36, a stopper 33 is slidably connected with the stopper sliding groove 36, and the bottom surface of the stopper 33 is fixedly.

Advantageously, the gate 32 is slidably connected to the left and right gate tracks 31, the reels 15 are symmetrically arranged in the reel grooves 16, the reel grooves 16 are arranged at the top end of the supporting block 18 and open upward, the supporting block 18 is fixedly arranged on the top surface of the outer frame of the gate frame 19 in a bilaterally symmetrical manner, the top surface of the slider 21 is connected to the slider sliding groove 13 through the slider spring 20, and the top surface of the piston 38 is connected to the pneumatic chamber 34 through the piston spring 39.

Beneficially, the dredging starting mechanism comprises a tensioning inclined block 41 arranged at the bottom end of the sliding block sliding groove 13, the tensioning inclined block 41 can be slidably connected with the sliding block 21, a belt cavity 12 is arranged at one end of the tensioning inclined block 41 far away from the opening device 17, an end face of the tensioning inclined block 41 far away from the opening device 17 is connected with the belt cavity 12 through a tensioning inclined block spring 42, a lower belt wheel 30 is arranged at the bottom end of the belt cavity 12, the lower belt wheel 30 is fixedly connected with a front motor shaft 29, the front motor shaft 29 is rotatably connected with the building 10, a front motor 28 is dynamically connected at one end of the front motor shaft 29 far away from the opening device 17, an upper belt wheel 23 positioned at the upper side of the lower belt wheel 30 is arranged in the belt cavity 12, the upper belt wheel 23 is connected with the lower belt wheel 30 through a belt 27, and the upper belt wheel 23 is fixedly connected with the winder shaft 26, the winder shaft 26 with connect through torsional spring 24 between the belt chamber 12, winder shaft 26 keeps away from the fixed winder 25 that is provided with of one end of switching-off device 17, winder 25 is located winder chamber 11, 11 rear sides in winder chamber are provided with switching-off actuating mechanism.

Beneficially, the brake opening starting mechanism includes a rear pull rope 54 connected to the winder cavity 11, the rear end of the rear pull rope 54 sequentially bypasses winding rods 52 arranged in an up-down symmetry manner and is fixedly connected to end faces, far away from the water channel 51, of the sliding doors 50, the winding rods 52 are located in winding rod cavities 53, the sliding doors 50 are located in sliding door sliding grooves 43 opening towards the water channel 51 and are connected with the sliding door sliding grooves 43 in a sliding manner, the end faces, far away from the water channel 51, of the sliding doors 50 are connected with the sliding door sliding grooves 43 through sliding door springs 44, rear end walls of the sliding door sliding grooves 43 are provided with inclined block sliding grooves 46 opening forwards, end walls, far away from the water channel 51, of the inclined block sliding grooves 46 are fixedly provided with metal blocks 45, and dredging mechanisms are arranged in the inclined block sliding grooves 46.

Beneficially, the dredging mechanism includes a sloping block 47 disposed in the sloping block sliding groove 46 and slidably connected thereto, a rear end face of the sloping block 47 is connected with the sloping block sliding groove 46 through a sloping block spring 55, one end of the sloping block 47 close to the water channel 51 is provided with a dredging brush rod groove 49 with an opening towards the water channel 51, a dredging brush rod 48 is disposed in the dredging brush rod groove 49, a pushing block sliding groove 63 with an opening towards the water channel 51 is disposed on a rear end wall of the dredging brush rod groove 49, a pushing block 69 is slidably connected in the pushing block sliding groove 63, an end face of the pushing block 69 far away from the water channel 51 is connected with the pushing block sliding groove 63 through a pushing block spring 70, an electromagnet 71 is fixedly disposed on an end wall of the pushing block sliding groove 63 far away from the water channel 51, the metal block 45 can be connected with a circuit between the electromagnet 71 and a power supply thereof, a support rod 68 is fixedly disposed on a front end face of the pushing block 69 close, the pneumatic reciprocating type dredging brush rod is characterized in that an annular groove 64 with a forward opening is formed in the supporting rod 68, an annular column 65 is connected in the annular groove 64 in a sliding mode, the rear end face of the dredging brush rod 48 is fixedly connected with the front end face of the annular column 65, a telescopic air bag groove 66 with a forward opening is formed in the supporting rod 68, a reciprocating telescopic air bag 67 is fixedly connected between the telescopic air bag groove 66 and the dredging brush rod 48, and a pneumatic reciprocating mechanism is arranged on the rear side of the reciprocating telescopic air bag 67.

Beneficially, the pneumatic reciprocating mechanism comprises a hose 72 fixedly connected with the rear end of the reciprocating telescopic air bag 67, the hose 72 is located in a hose groove 62 opening to the water channel 51, a cam cavity 56 is fixedly arranged at the rear end of the hose 72, a reciprocating piston 60 is slidably connected in the cam cavity 56, the front end face of the reciprocating piston 60 is connected with the cam cavity 56 through a reciprocating piston spring 61, two cams 57 are symmetrically arranged at the rear end of the cam cavity 56 in a left-right mode, the cams 57 are slidably connected with the rear end face of the reciprocating piston 60, the left cam 57 and the right cam 57 are both fixedly connected with a cam shaft 58, the cam shaft 58 is rotatably connected with the swash block 47, and a rear motor 59 is dynamically connected to one end of the cam shaft 58 close to the water channel 51.

In the initial state, the slider spring 20, the piston spring 39, the sloping block spring 55 and the push block spring 70 are in the compressed state, and the stopper expanding air bag 37, the belt 27, the torsion spring 24, the sliding door spring 44, the reciprocating expanding air bag 67 and the reciprocating piston spring 61 are in the normal stretched state; sequence of mechanical actions of the whole device: 1. the gate opening device 17 is started, so that the gate 32 is lifted, the upper pulling rope 14 loosens the drawing of the sliding block 21, the sliding block 21 moves downwards under the reset action of the sliding block spring 20, the lower pulling rope 22 loosens the drawing of the piston 38, the piston 38 moves downwards under the reset action of the piston spring 39, the gas in the gas pressure cavity 34 is squeezed into the stopper telescopic air bag 37 through the gas pipe 35, the stopper telescopic air bag 37 is expanded, and the stopper 33 blocks the exposed part of the gate slot 40 along with the slow upward movement of the gate 32; 2. the front motor 28 is activated to rotate the front motor shaft 29 and thus the lower pulley 30, the slider 21 moves downwards to slidingly engage the end face of the tensioning ramp 41 adjacent to the opening device 17, thereby pushing the tensioning ramp 41 back towards the opening device 17, thereby tensioning the belt 27, thus rotating the upper pulley 23, thus rotating the winder shaft 26, thus rotating the winder 25, thus pulling the rear pull cord 54 against the sliding door 50 and moving it back towards the water channel 51, thus moving the ramp 47 forward under the return action of the ramp spring 55, moving the ramp 47 forward to the forwardmost position, thus stopping the metal block 45 from connecting the circuit between the electromagnet 71 and its power supply, thus disconnecting the electromagnet 71, thus moving the push block 69 towards the water channel 51 under the return action of the push block spring 70, thus moving the support bar 68, the annular post 65 and the dredging brush bar 48 towards the water channel 51, after the push block 69 stops moving, the rear motor 59 is started, so that the cam shaft 58 rotates, the cam 57 rotates, the reciprocating piston 60 repeatedly moves back and forth under the combined action of the cam 57 and the reciprocating piston spring 61, the reciprocating piston 60 moves forward to extrude the gas in the cam cavity 56 into the reciprocating telescopic air bag 67 through the hose 72, so that the reciprocating telescopic air bag 67 extends, the annular column 65 and the dredging brush rod 48 move forward to dredge through the frame of the gate door frame 19, the reciprocating piston 60 moves backward to pump the gas in the reciprocating telescopic air bag 67 into the cam cavity 56 through the hose 72, so that the reciprocating telescopic air bag 67 is compressed, and the annular column 65 and the dredging brush rod 48 move backward to dredge through the frame of the gate door frame 19; 3. when the device needs to be reset, the gate opening device 17 controls the gate 32 to move downwards, so that the upper pull rope 14 pulls the slide block 21 to move upwards, the lower pull rope 22 pulls the piston 38 to move upwards, so that the gas in the block telescopic air bag 37 is sucked into the air pressure cavity 34 through the air pipe 35, so that the block telescopic air bag 37 is compressed, the block 33 blocks the gate slot 40 of the exposed part to reach the bottommost position along with the slow downward movement of the gate 32, the slide block 21 moves upwards to be separated from the sliding connection with the tensioning inclined block 41, so that the tensioning inclined block 41 moves towards the gate opening device 17 under the resetting action of the tensioning inclined block spring 42, so that the belt 27 is loosened, the upper belt wheel 23 is reversed, the bobbin shaft 26 is reversed, the bobbin 25 is reversed, so that the sliding door 50 moves towards the water channel 51 under the resetting action of the sliding door spring 44, so that the sliding door 50 is connected with the inclined block 47 in a sliding way, the inclined block 47 moves backwards, so that the metal block 45 is connected with a circuit between the electromagnet 71 and a power supply thereof, the electromagnet 71 is switched on, the pushing block 69 is attracted to move back to the water channel 51, the rear motor 59 is switched off, the cam shaft 58 stops rotating, the cam 57 stops rotating, the reciprocating piston 60 stops moving back and forth, the annular column 65 and the dredging brush rod 48 move backwards under the reset action of the reciprocating telescopic air bag 67, the pushing block 69 moves back to the water channel 51, the supporting rod 68, the annular column 65 and the dredging brush rod 48 move back to the water channel 51, the sliding door 50 continues moving to the nearest position to the water channel 51, the inclined block 47 moves back to the rearmost position, the front motor 28 is switched off, the moving parts stop moving, the elastic elements play a reset action, and the device is reset.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a reduce retaining mediation water sluicegate device of gate slot influence, includes the building body, its characterized in that: the top end of the building body is provided with a water channel with an upward opening, the front end of the water channel is fixedly provided with a gate frame, the inner wall of the gate frame is bilaterally symmetrical to be provided with gate slots with openings towards the water channel, the end wall of the gate slot far away from the water channel is fixedly provided with a gate track, the gate frame is connected with a gate in a sliding way, the gate is in power connection with the bottom end of the opening device, the top surface of the gate is bilaterally symmetrical and fixedly provided with upper pull ropes, one end of the upper pull ropes far away from the water channel sequentially bypasses the reels which are bilaterally symmetrical to be fixedly connected with the top surface of the sliding block, the sliding block is positioned in the sliding groove of the sliding block and is in sliding connection with the sliding groove of the sliding block, one side of the sliding groove of the sliding block far away from the water channel, the bottom end of the air pressure cavity is fixedly provided with an air pipe, the air pipe is close to one end of the water channel and fixedly connected with the bottom end of the stop block telescopic air bag, the bottom surface of the stop block telescopic air bag is fixedly arranged on the bottom wall of the stop block chute, the stop block is slidably connected with the stop block in the stop block chute, and the bottom surface of the stop block is fixedly connected with the top end of the stop block telescopic air bag.

2. The device of claim 1, wherein the means for maintaining the passage of the sluice gate comprises: the gate is connected with the left gate track and the right gate track in a sliding mode, the reels are arranged in reel grooves in a bilateral symmetry mode, the reel grooves are formed in the top ends of supporting blocks, the openings of the reel grooves are upward, the supporting blocks are fixedly arranged on the top surface of the outer frame of the gate frame in a bilateral symmetry mode, the top surfaces of the sliding blocks are connected with the sliding block grooves through sliding block springs, and the top surfaces of the pistons are connected with the air pressure cavities through piston springs.

3. The device of claim 1, wherein the means for maintaining the passage of the sluice gate comprises: the dredging starting mechanism comprises a tensioning inclined block arranged at the bottom end of the sliding groove of the sliding block, the tensioning inclined block can be in sliding connection with the sliding block, a belt cavity is arranged at one end, away from the brake-opening device, of the tensioning inclined block, the end face, away from the brake-opening device, of the tensioning inclined block is connected with the belt cavity through a tensioning inclined block spring, a lower belt wheel is arranged at the bottom end of the belt cavity and fixedly connected with a front motor shaft, the front motor shaft is rotatably connected with the building body, one end, away from the brake-opening device, of the front motor shaft is in power connection with a front motor, an upper belt wheel positioned on the upper side of the lower belt wheel is arranged in the belt cavity, the upper belt wheel is connected with the lower belt wheel through a belt, the upper belt wheel is fixedly connected with a winder shaft, the winder shaft is connected with the belt cavity through a torsion spring, and a winder is fixedly arranged at one end, away, the winder is located the winder intracavity, winder chamber rear side is provided with switching-off actuating mechanism.

4. A device for maintaining the dredging of a water sluicegate with reduced gate slot influence according to claim 3, wherein: the switching-on starting mechanism comprises a rear pull rope connected with the winder cavity, the rear pull rope rear end sequentially bypasses a winding rod and a sliding door which are symmetrically arranged from top to bottom and is kept away from the end face of the water channel, the winding rod is located in the winding rod cavity, the sliding door is located in a sliding door chute of the water channel and is in sliding connection with the sliding door, the sliding door is kept away from the end face of the water channel and is connected with the sliding door chute through a sliding door spring, the rear end wall of the sliding door chute is provided with an inclined block chute with a forward opening, the inclined block chute is kept away from the end wall of the water channel, and a metal block is fixedly arranged in the inclined block chute and is provided with a dredging mechanism.

5. The device of claim 4, wherein the means for maintaining the passage of the sluice gate comprises: the dredging mechanism comprises an inclined block which is arranged in the inclined block chute and is in sliding connection with the inclined block chute, the rear end face of the inclined block is connected with the inclined block chute through an inclined block spring, one end of the inclined block, which is close to the water channel, is provided with a dredging brush rod groove which is opened towards the water channel, a dredging brush rod is arranged in the dredging brush rod groove, the rear end wall of the dredging brush rod groove is provided with a push block chute which is opened towards the water channel, a push block is in sliding connection with the push block chute, the end face of the push block, which is far away from the water channel, is connected with the push block chute through a push block spring, the end wall of the push block chute, which is far away from the water channel, is fixedly provided with an electromagnet, the metal block can be connected with a circuit between the electromagnet and a power supply thereof, the front end face of the push block, the annular groove is connected with an annular column in a sliding mode, the rear end face of the dredging brush rod is fixedly connected with the front end face of the annular column, a telescopic air bag groove with a forward opening is formed in the supporting rod, a reciprocating telescopic air bag is fixedly connected between the telescopic air bag groove and the dredging brush rod, and a pneumatic reciprocating mechanism is arranged on the rear side of the reciprocating telescopic air bag.

6. The device of claim 5, wherein the means for maintaining the passage of the sluice gate comprises: pneumatic reciprocating mechanism include with reciprocal flexible gasbag rear end fixed connection's hose, the hose be located the opening to the hose inslot of water course, the hose rear end is fixed to be provided with the cam chamber, cam intracavity sliding connection has reciprocating piston, before the reciprocating piston terminal surface with through reciprocating piston spring coupling between the cam chamber, cam chamber rear end bilateral symmetry is provided with two cams, the cam with reciprocating piston rear end face sliding connection controls the cam all with camshaft fixed connection, the camshaft with the sloping block rotates and connects, the camshaft is close to the one end power of water course is connected with the rear motor.