CN115772878A - An adjustable drainage safety gate for farmland drainage ditches - Google Patents

Abstract

The present invention is applicable to agricultural drainage, and provides an adjustable drainage safety gate for farmland drainage ditches, including a gate pier, a gate beam, a bottom weir and a gate body, and the gate body includes a gate cylinder, a gate body, a floating plate and a linkage assembly , an installation groove is opened on the outer wall of the gate pier, an auxiliary pier is arranged in the installation groove, an adjustment mechanism for driving the movement of the auxiliary pier is installed in the gate pier, and a stabilizing component is installed on the gate pier, The stabilizing assembly includes a piston cavity, a third piston, a second connecting rod, a first spring, a single-stage flywheel, a driving rod and a driving pin. The adjustable drainage safety gate of the farmland drainage ditch provided by the present invention is provided by setting gate piers, The sluice beam, bottom weir and gate body, when a flood disaster occurs, make the drainage outlet larger, so as to quickly drain the water in the gate; Stable components to ensure the stability of the gate.

Description

An adjustable drainage safety gate for farmland drainage ditches

technical field

The invention belongs to agricultural drainage, in particular to an adjustable safety gate for drainage of farmland drainage ditches.

Background technique

Farmland drainage ditches refer to water channels that are naturally formed or artificially excavated to assist farmland drainage; farmland drainage ditches mainly have three functions: one is the function of reducing waterlogging and drainage; the other is the function of water storage; The function of nutrient loss and pollution reduction; in order to give full play to the various functions of farmland drainage ditches, it is usually necessary to set water weirs or gates in the ditches;

Chinese patent CN103938599B discloses an adjustable self-drainage safety gate suitable for farmland drainage ditches, which consists of a gate body, a gate, a gate opening device and a gate reset device. The gate body includes a gate pier and a beam, and a permeable pipe is installed on the gate pier. The gate includes a bottom weir, a movable gate, a hinge, a horizontal bar, a support rod and an adjustable hinge, the bottom weir is connected with the movable gate through a hinge, and the support rod is connected with the movable gate through an adjustable hinge. The gate opening device includes a water tank, a counterweight, a swing rod and a support, and the swing rod is fixed on the gate pier through a rotating shaft. The gate reset device includes a drum, a drum bracket, a reduction box, a hand wheel and a cable, the reduction box is connected to the drum bracket through an output shaft, and the drum and the movable gate are connected through a cable.

In the above-mentioned patents, when a flood occurs, the gate is directly released to make the gate fall to the outside of the gate under the action of its own gravity and water thrust to perform rapid drainage. On the one hand, the gate is directly dumped, which is easy to cause damage to the ditches and the gate. On the other hand, when the gate is opened to the maximum extent, the instantaneous water flow is very large, which has a great impact on the ditch. Moreover, after drainage, the gate needs to be reset manually, which is troublesome to operate.

Contents of the invention

The invention provides an adjustable drainage safety gate for farmland drainage ditches, aiming to solve the above problems.

The present invention is achieved in this way, an adjustable drainage safety gate for farmland drainage ditches, comprising:

Two gate piers are symmetrically arranged, and the top and bottom of the two gate piers are respectively fixedly connected with gate beams and bottom weirs;

The gate body installed between the gate beam and the bottom weir, the gate body includes:

A sluice barrel, the top and bottom of the sluice barrel are in contact with the sluice beam and the bottom weir respectively, and both sides of the sluice barrel are open;

Two door bodies installed in the sluice barrel and opposite up and down, with a water outlet between the two door bodies, the door body is arc-shaped and slidably connected with the wall of the sluice barrel;

The floating plate installed on the gate beam, one end of the floating plate is rotatably connected with the gate beam, and the other end of the floating plate is equipped with an air bag;

The linkage assembly connected between the floating plate and the two door bodies. When the floating plate rotates upward, the linkage assembly drives the two door bodies away from each other. When the floating plate rotates downward, the linkage assembly drives the two door bodies to move toward each other. near.

Preferably, the brake cylinder is rotatably installed between two gate piers, and a power motor for driving the brake cylinder to rotate is installed on the gate piers.

Preferably, the airbag is provided with an air nozzle.

Preferably, the linkage assembly includes:

The sector gear fixed on the end of the floating plate away from the airbag, the center of the sector gear coincides with the rotation center of the floating plate;

The first cylinder body fixed on the gate beam, the first cylinder body slides up and down with a first piston, the first piston is fixed with a first connecting rod, and the first connecting rod is provided with a fan-shaped Rack and gear meshing;

The second cylinder fixed in the brake cylinder, the bottom end of the first cylinder communicates with the end of the second cylinder close to the door through the air pipe, the second cylinder is provided with a fourth piston, the fourth A threaded rod is installed on the side of the piston close to the door body, and the threaded rod is located in the middle of the two door bodies;

The connecting shaft fixed on the end wall of the brake cylinder, the axis of the connecting shaft coincides with the center line of the brake cylinder, and two third connecting rods are installed on the connecting shaft, and the two third connecting rods are respectively connected with the two door hinge;

The threaded rod is threaded with a second internal thread sleeve, and the second internal thread sleeve is hinged with two second connecting rods, and the two second connecting rods are respectively hinged with two third connecting rods;

A strut is fixed on the other side of the fourth piston, and the end of the strut away from the fourth piston passes through the second cylinder and extends to the outside, and a third spring is connected between the strut and the second cylinder , the force of the third spring on the pole is towards the side of the door body.

Preferably, an installation groove is opened on the outer wall of the gate pier, an auxiliary pier is arranged in the installation groove, and the auxiliary pier is horizontally slidably connected with the gate pier, and an installation for driving the auxiliary pier to move is installed in the gate pier. Regulating mechanism.

Preferably, the adjustment mechanism includes:

Vertically rotate the two-way screw installed in the gate pier;

Two first internal threaded sleeves threadedly connected to the two threaded sections of the two-way screw rod;

The first connecting rod is connected between the first internal thread sleeve and the auxiliary pier, and the two ends of the first connecting rod are respectively hinged with the first internal thread sleeve and the auxiliary pier.

Preferably, a stabilizing component is installed on the gate pier, and the stabilizing component includes:

A piston chamber set in the side wall of the gate pier close to the water flow direction, the length direction of the piston chamber is parallel to the water flow direction, and a third piston is arranged in the piston chamber;

The second connecting rod fixed on the third piston, the first spring is set on the second connecting rod in the piston chamber, and the two ends of the first spring are respectively in conflict with the third piston and one end of the piston chamber, and the first spring is opposite to the second connecting rod. The force of the three pistons is opposite to the direction of water flow;

A single-stage flywheel installed on a two-way screw rod, an arc track is fixed on the outer wall of the single-stage flywheel;

Rotate the drive rod connected to the two-way screw rod and located on one side of the single-stage flywheel. A pin shaft is fixed at one end of the second connecting rod close to the drive rod. A movable slot for the pin shaft to pass through and slide is opened on the drive rod ;

The drive pin is fixed on the drive rod, the drive pin is inserted into the arc track, the arc track is provided with a second spring, the two ends of the second spring are respectively connected with the drive pin and one end of the arc track, and the second spring The force on the drive pin is counterclockwise.

Preferably, a plurality of connection anchors are fixed at intervals on the outer wall of the auxiliary pier, and the connection anchors are inserted into the side slope of the ditch.

Preferably, a second piston is provided inside the connection anchor, and a plurality of arc-shaped expansion sheets are connected between the second piston and the end of the connection anchor away from the auxiliary pier, and a plurality of arc-shaped expansion sheets are arranged on the outer wall of the expansion sheet. The side wall on the connection anchor is provided with a through groove for the movement of the arc-shaped expansion sheet, and the piston cavity communicates with the end of the connection anchor provided with the second piston through the first communication pipe.

Preferably, the gate pier is fixedly connected to the side slope of the ditch, and the bottom weir is fixedly connected to the bed of the ditch.

Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

The adjustable drainage safety gate of the farmland drainage ditches provided by the present invention is provided with gate piers, gate beams, bottom weirs and gate bodies, and the gate bodies include gate cylinders, gate bodies, floating plates and linkage components. At that time, the water level in the farmland and the ditch rises rapidly, and the buoyancy of the water on the floating plate and the air bag pushes the floating plate to rotate upwards gradually. The water in the ditch effectively prevents the loss caused by the high water level of the farmland and the long flooding time; after the drainage is completed, the water level in the ditch drops, the floating plate rotates downward under the gravity, and the two gates are driven by the linkage assembly Close to each other, restore the initial state, and keep the water level in the ditch stable.

The adjustable drainage safety gate of the farmland drainage ditches provided by the present invention is provided with a stabilizing assembly, the stabilizing assembly includes a piston cavity, a third piston, a second connecting rod, a first spring, a single-stage flywheel, a drive rod and The driving pin makes the auxiliary pier and the side slope of the ditch further close together to ensure the stability of the gate when a flood disaster occurs.

Description of drawings

Fig. 1 is a structural schematic diagram of an adjustable drainage safety gate of a farmland drainage ditch provided by the present invention;

Figure 2 is an enlarged view of A in Figure 1;

Fig. 3 is a structural schematic diagram of the gate body in an adjustable safety gate for drainage of farmland drainage ditches provided by the present invention;

Fig. 4 is a structural schematic diagram of a stable component in an adjustable drainage safety gate of a farmland drainage ditch provided by the present invention;

Fig. 5 is an enlarged view at B place in Fig. 4;

Fig. 6 is a structural schematic diagram of a single-stage flywheel in an adjustable drainage safety gate of a farmland drainage ditch provided by the present invention;

Fig. 7 is a structural schematic diagram of the connecting anchor in the adjustable flood drainage safety gate of the farmland drainage ditches provided by the present invention.

Notes on reference signs: 1. Gate beam; 2. Air bag; 3. Floating plate; 4. Sector gear; 5. First cylinder; 6. First piston; 7. First connecting rod; 8. Two-way screw rod; 9. Gate pier; 10. Auxiliary pier; 11. Ditch; 12. Connecting anchor; 13. First connecting rod; 14. First internal thread sleeve; 15. Single-stage flywheel; 16. Gate body; 17. Bottom weir; 18, expansion plate; 19, second piston; 20, first spring; 21, second connecting rod; 22, driving rod; 23, driving pin; 24, arc track; 25, second spring; 26, third Piston; 27, the first connecting pipe; 28, the brake cylinder; 29, the door body; 30, the third connecting rod; 31, the threaded rod; 32, the second internal thread sleeve; 33, the second connecting rod; 34, the second Cylinder body; 35, the third spring; 36, the fourth piston; 37, the gas nozzle.

Detailed ways

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the application; the terms used herein in the description of the application are only for the purpose of describing specific embodiments , is not intended to limit the present application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and the description of the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the description and claims of the present application or the above drawings are used to distinguish different objects, rather than to describe a specific order.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

An embodiment of the present invention provides an adjustable drainage safety gate for farmland drainage ditches, as shown in Figures 1-7, including:

The two gate piers 9 are arranged symmetrically, the gate beam 1 and the bottom weir 17 are respectively fixedly connected between the top and the bottom of the two gate piers 9, which can be fixed by welding, and the gate piers 9 are fixed to the side slope of the ditch 11 Connected, the bottom weir 17 is fixedly connected with the ditch bed of the ditch 11, and can be fixed by pouring concrete;

The gate body 16 installed between the gate beam 1 and the bottom weir 17, the gate body 16 includes:

A brake cylinder 28, the top and bottom of the brake cylinder 28 are in contact with the gate beam 1 and the bottom weir 17 respectively, and the cylinder walls on both sides of the brake cylinder 28 are open;

The sluice cylinder 28 can be rotatably installed between the two sluice piers 9, and can be rotatably installed through the rotating shaft, bearing and bearing seat, and the position of the opening can be adjusted by rotating the sluice cylinder 28, and can be installed on the sluice pier 9 to drive the sluice cylinder 28 The rotating power motor, of course, can also drive the brake drum 28 to rotate manually;

There are two door bodies 29 installed in the brake cylinder 28 and facing up and down. There is a water outlet between the two door bodies 29. The door body 29 is arc-shaped and is slidingly connected with the cylinder wall of the brake cylinder 28. The slide rail is fixed by screws on the outer wall of the 29, and a chute that is slidingly connected with the slide rail is opened on the cylinder wall of the brake cylinder 28;

The floating plate 3 installed on the gate beam 1, one end of the floating plate 3 is rotatably connected with the gate beam 1, the other end of the floating plate 3 is equipped with an air bag 2, and an air nozzle 37 can be set on the air bag 2, and the air nozzle can be connected by an air pump 37 inflate the air bag 2, and the air nozzle 37 can also be opened to deflate the air bag 2 to adjust the buoyancy;

The linkage assembly connected between the floating plate 3 and the two door bodies 29, when the floating plate 3 rotates upward, the two door bodies 29 are driven away by the linkage assembly, and when the floating plate 3 rotates downward, the linkage assembly drives Two door bodies 29 are close to each other.

It can be understood that, under normal circumstances, the water level in the ditch 11 is low, and the water flows downstream from the outlet, and the water level in the ditch 11 is stable. When a flood disaster occurs, the water level in the farmland and the ditch 11 rises rapidly, and the water The buoyancy of the floating plate 3 and the airbag 2 pushes the floating plate 3 to gradually rotate upwards, and the floating plate 3 drives the two door bodies 29 away from each other through the linkage assembly, so that the drain port becomes larger, thereby quickly draining the water in the gate, effectively preventing The losses caused by the high water level of the farmland and the long flooding time are eliminated; after the drainage is completed, the water level in the ditch 11 drops, and the floating plate 3 rotates downward under the gravity, and the two door bodies 29 are driven close to each other through the linkage assembly. Restore the initial state and keep the water level in the ditch 11 stable.

Wherein, the linkage assembly includes:

The sector gear 4 fixed on the end of the floating plate 3 away from the airbag 2 can be fixed by welding, and the center of circle of the sector gear 4 coincides with the rotation center of the floating plate 3;

The first cylinder body 5 fixed on the sluice beam 1 can be fixed by bolts, the first cylinder body 5 is provided with a first piston 6 sliding up and down, and the first piston 6 is fixed with a first connecting rod 7, It can be fixed by welding, and the first connecting rod 7 is provided with a rack meshed with the sector gear 4;

The second cylinder body 34 fixed in the brake cylinder 28 can be welded and fixed to the end wall of the second cylinder body 34 and the brake cylinder 28. The bottom end of the first cylinder body 5 and the second cylinder body 34 are close to the door body 29. One end communicates with the air pipe, and the second cylinder 34 is provided with a fourth piston 36, and the side of the fourth piston 36 close to the door body 29 is rotatably mounted with a threaded rod 31, which can be rotatably installed through a bearing and a bearing seat. The threaded rod 31 is located in the middle of the two door bodies 29;

The connecting shaft fixed on the end wall of the brake drum 28 can be fixed by welding, the axis of the connecting shaft coincides with the center line of the brake drum 28, and two third connecting rods 30 are mounted on the connecting shaft for rotation. The third connecting rod 30 is respectively hinged with the two door bodies 29;

The threaded rod 31 is threaded with a second internal thread sleeve 32, and the second internal thread sleeve 32 is hinged with two second connecting rods 33, and the two second connecting rods 33 are connected with two third connecting rods respectively. The connecting rod 30 is hinged;

The other side of the fourth piston 36 is fixed with a strut, and the end of the strut away from the fourth piston 36 passes through the second cylinder 34 and extends to the outside thereof, and the strut is connected to the second cylinder 34 There is a third spring 35, the third spring 35 can be sleeved on the pole and the two ends are respectively hooked to the pole and the second cylinder 34, and the force of the third spring 35 on the pole is towards the side of the door body 29 , the third spring 35 can be a tension spring, which is designed to have excellent properties such as tension, strength, and stiffness;

It should be explained that under normal circumstances, the third spring 35 can apply a force A to the side of the door body 29 to the fourth piston 36 through the strut, and the door body 29 can pass through the third connecting rod 30 and the second connecting rod 33 , The second internal thread sleeve 32 and the threaded rod 31 exert an active force B on the fourth piston 36 to the side away from the door body 29, and an active force C of the water flow received by each component, and the active force A is greater than the active force B and the active force The sum of the force C supports the two door bodies 29 through the two third connecting rods 30, so that the drain port is in an open state. By rotating the threaded rod 31, the threaded rod 31 drives the second internal thread sleeve 32 to move, and the second internal thread The sleeve 32 drives the third connecting rod 30 to move through the second connecting rod 33, and the third connecting rod 30 drives the door body 29 to move, which can manually adjust the size of the drain port to meet different drainage requirements;

Furthermore, when a flood disaster occurs, the water level in the farmland and the ditch 11 rises rapidly, and the buoyancy of the water on the floating plate 3 and the airbag 2 pushes the floating plate 3 to gradually rotate upwards. The weight and length of the force arm of the floating plate 3 can be designed according to requirements , the longer the force arm, the more labor-saving, the floating plate 3 drives the sector gear 4 to rotate, the sector gear 4 drives the first connecting rod 7 to move downward through the rack, the first connecting rod 7 drives the first piston 6 to move downward, and the first piston 6 Press the medium in the first cylinder 5 into the second cylinder 34 through the air pipe, and then push the fourth piston 36 to move away from the door body 29, and the fourth piston 36 drives the threaded rod 31 and the second internal thread sleeve 32 moves away from the side of the door body 29, the second internal thread sleeve 32 drives the two door bodies 29 away from each other through the second connecting rod 33 and the third connecting rod 30, and the drain port becomes larger, quickly draining the water in the gate, With the progress of waterlogging, the water level in the ditch 11 gradually drops, and the floating plate 3 gradually rotates downward. The floating plate 3 drives the sector gear 4 to reverse, and the sector gear 4 drives the first piston 6 to move upward through the first connecting rod 7. The medium in the second cylinder 34 returns to the first cylinder 5, and under the action of the third spring 35, the fourth piston 36, the threaded rod 31 and the second internal thread sleeve 32 are driven to move toward the door body 29 through the support rod. , the second internal thread sleeve 32 drives the two door bodies 29 to reset through the second connecting rod 33 and the third connecting rod 30, and the drain port returns to a normal state;

Furthermore, by turning the sluice 28, the height position of the drain outlet can be changed, that is, the lowest position of the drain outlet can be adjusted, so that the water level in the ditch 11 can be adjusted under normal conditions to meet different agricultural planting needs;

In this embodiment, an installation groove is provided on the outer wall of the gate pier 9, and an auxiliary pier 10 is arranged in the installation groove. The sliding connection method, the gate pier 9 is equipped with an adjustment mechanism for driving the auxiliary pier 10 to move, so that the gate can adapt to ditches 11 of different widths and sizes;

Wherein, the adjustment mechanism includes:

The two-way screw rod 8 installed in the gate pier 9 is rotated vertically and installed through the bearing and the bearing seat. The top end of the two-way screw rod 8 extends to the top of the gate beam 1 and is welded and fixed with a hand wheel. The two-way wire rod can be driven by the hand wheel. Rod 8 rotates;

Two first internal thread sleeves 14 threadedly connected to the two threaded sections of the two-way screw rod 8;

The first connecting rod 13 connected between the first internal thread sleeve 14 and the auxiliary pier 10, the two ends of the first connecting rod 13 are respectively hinged with the first internal thread sleeve 14 and the auxiliary pier 10;

By rotating the two-way screw rod 8, the two-way screw rod 8 drives the first internal thread sleeve 14 to move, the first internal thread sleeve 14 drives the first connecting rod 13 to move, and the first connecting rod 13 drives the auxiliary pier 10 to move until the auxiliary pier 10 and The side slopes of the ditches 11 are in conflict, and the gates can be installed in ditches 11 of different widths to improve adaptability and practicability;

In this embodiment, a plurality of connection anchors 12 are fixed at intervals on the outer wall of the auxiliary pier 10, and the connection anchors 12 are inserted into the side slope of the ditch 11;

In a specific implementation, a stabilizing component is installed on the gate pier 9 to improve the stability of the gate, and the stabilizing component includes:

A piston chamber set in the side wall of the gate pier 9 close to the water flow direction, the length direction of the piston chamber is parallel to the water flow direction, and a third piston 26 is arranged in the piston chamber;

The second connecting rod 21 fixed on the third piston 26, the first spring 20 is set on the second connecting rod 21 in the piston chamber, and the two ends of the first spring 20 are in conflict with the third piston 26 and one end of the piston chamber respectively , the force of the first spring 20 on the third piston 26 is opposite to the direction of water flow;

The single-stage flywheel 15 installed on the two-way screw mandrel 8, the outer wall of the single-stage flywheel 15 is fixed with an arc track 24;

Rotate the drive rod 22 that is connected to the two-way screw mandrel 8 and is positioned at one side of the single-stage flywheel 15. The second connecting rod 21 is fixed with a pin near one end of the drive rod 22. The drive rod 22 is provided with a pin for the pin to pass through. Pass and slide movable slot;

The driving pin 23 is fixed on the driving rod 22, and the driving pin 23 is inserted in the arc track 24, and the second spring 25 is arranged in the arc track 24, and the two ends of the second spring 25 are connected with the driving pin 23 and the circle respectively. One end of the arc track 24 is connected, and the active force of the second spring 25 on the drive pin 23 is counterclockwise. The second spring 25 can be selected as a tension spring, and the two ends of the second spring 25 are respectively connected to the drive pin 23 and one end of the arc track 24. Hook even.

When a flood disaster occurs, the water level in the ditch 11 rises, and the impact force and pressure of the water on the third piston 26 increase, pushing the third piston 26 to move into the gate pier 9, and the third piston 26 drives the second connecting rod 21 Moving inwardly, the second connecting rod 21 drives the driving rod 22 to rotate, and the driving rod 22 drives the driving pin 23 to move in the arc track 24, and the driving pin 23 pulls the arc track 24 through the second spring 25, and the arc track 24 drives the single The outer ring of the stage flywheel 15 rotates, and the outer ring of the single-stage flywheel 15 drives the two-way screw rod 8 to rotate further or has a tendency to rotate through the inner ring, so that the two first internal thread sleeves 14 are further approached or have a tendency to approach, so that The auxiliary pier 10 is further pressed against the side slope of the ditch 11 to increase the force between the gate and the ditch 11 to further ensure the stability of the gate;

Further, the connection anchor 12 is provided with a second piston 19, and a plurality of arc-shaped expansion sheets 18 are connected between the second piston 19 and the end of the connection anchor 12 away from the auxiliary pier 10, and the arc-shaped expansion pieces 18 The sheet 18 protrudes outward, and the outer wall of the expansion sheet 18 is provided with a plurality of protrusions, and the side wall on the connecting anchor 12 is provided with a channel for the movement of the arc-shaped expansion sheet 18, and the piston chamber passes through The first connecting pipe 27 communicates with the end of the connecting anchor 12 provided with the second piston 19;

When the third piston 26 moves into the gate pier 9, the third piston 26 presses the medium in the piston chamber into the connecting anchor 12, so that the second piston 19 moves to the right, and the second piston 19 squeezes the expansion plate 18, and the expansion plate The outward expansion of 18 is further closely connected with the side slope of the ditch 11, further improving the connection stability between the gate and the side slope.

In summary, the present invention provides an adjustable drainage safety gate for farmland drainage ditches, the working principle of which is as follows:

Under normal circumstances, the water level in the ditch 11 is relatively low, and the water flows downstream from the outlet. The buoyancy force of 2 pushes the floating plate 3 to rotate upward gradually, the floating plate 3 drives the sector gear 4 to rotate, the sector gear 4 drives the first connecting rod 7 to move downward through the rack, and the first connecting rod 7 drives the first piston 6 to move downward, The first piston 6 presses the medium in the first cylinder 5 into the second cylinder 34 through the air pipe, and then pushes the fourth piston 36 to move away from the door body 29, and the fourth piston 36 drives the threaded rod 31 and the second The inner thread sleeve 32 moves away from the side of the door body 29, the second inner thread sleeve 32 drives the two door bodies 29 away from each other through the second connecting rod 33 and the third connecting rod 30, the drain port becomes larger, and quickly drains the gate body. With the progress of drainage, the water level in the ditch 11 gradually drops, and the floating plate 3 also gradually rotates downward. The floating plate 3 drives the sector gear 4 to reverse, and the sector gear 4 drives the first piston 6 through the first connecting rod 7. Moving upward, the medium in the second cylinder 34 returns to the first cylinder 5, and under the action of the third spring 35, the fourth piston 36, the threaded rod 31 and the second internal thread sleeve 32 are driven to the door body 29 through the strut. One side moves, and the second internal thread sleeve 32 drives the two door bodies 29 to reset by the second connecting rod 33 and the third connecting rod 30, and the drain outlet returns to a normal state; The impact force and pressure on the third piston 26 increase, pushing the third piston 26 to move inwards to the gate pier 9, the third piston 26 drives the second connecting rod 21 to move inward, and the second connecting rod 21 drives the driving rod 22 to rotate, The drive rod 22 drives the drive pin 23 to move in the arc track 24, the drive pin 23 pulls the arc track 24 through the second spring 25, and the arc track 24 drives the outer ring of the single-stage flywheel 15 to rotate, and the outer ring of the single-stage flywheel 15 passes through the inner ring. The ring drives the two-way screw rod 8 to further rotate or has a tendency to rotate, so that the two first internal threaded sleeves 14 are further approached or have a tendency to approach, so that the auxiliary pier 10 and the slope of the ditch 11 are further pressed against each other, and the gate is increased. The force between the ditch 11 further ensures the stability of the gate;

It should be noted that, for the foregoing embodiments, for the sake of simple description, they are expressed as a series of action combinations, and the present invention is not limited by the described action order, because according to the present invention, some steps may adopt other sequences or simultaneously. Secondly, the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

The above examples are only used to illustrate the technical solution of the present invention, but not to limit the protection scope of the invention. The described embodiments are only some, not all, embodiments of the present invention. Based on these embodiments, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above-mentioned embodiments, those skilled in the art can still combine, add, delete, or make other adjustments to the features in the various embodiments of the present invention according to the situation without any conflicts. Thereby, other technical solutions that are different and do not depart from the conception of the present invention in essence are obtained, and these technical solutions also belong to the protection scope of the present invention.

Claims (10)

1. An adjustable drainage safety gate for farmland drainage ditches, comprising: Two gate piers are symmetrically arranged, and the top and bottom of the two gate piers are respectively fixedly connected with gate beams and bottom weirs; The gate body installed between the gate beam and the bottom weir is characterized in that the gate body includes: A sluice barrel, the top and bottom of the sluice barrel are in contact with the sluice beam and the bottom weir respectively, and both sides of the sluice barrel are open; Two door bodies installed in the sluice barrel and opposite up and down, with a water outlet between the two door bodies, the door body is arc-shaped and slidably connected with the wall of the sluice barrel; The floating plate installed on the gate beam, one end of the floating plate is rotatably connected with the gate beam, and the other end of the floating plate is equipped with an air bag; The linkage assembly connected between the floating plate and the two door bodies. When the floating plate rotates upward, the linkage assembly drives the two door bodies away from each other. When the floating plate rotates downward, the linkage assembly drives the two door bodies to move toward each other. near. 2. The adjustable drainage safety gate of farmland drainage ditches as claimed in claim 1, characterized in that, the gate cylinder is rotatably installed between two gate piers, and a power motor for driving the gate cylinder to rotate is installed on the gate piers . 3. The adjustable flood drainage safety gate of farmland drainage ditch according to claim 1, characterized in that, the air bag is provided with an air nozzle. 4. The adjustable drainage safety gate of farmland drainage ditches according to claim 1, wherein the linkage assembly comprises: The sector gear fixed on the end of the floating plate away from the airbag, the center of the sector gear coincides with the rotation center of the floating plate; The first cylinder body fixed on the gate beam, the first cylinder body slides up and down with a first piston, the first piston is fixed with a first connecting rod, and the first connecting rod is provided with a fan-shaped Rack and gear meshing; The second cylinder fixed in the brake cylinder, the bottom end of the first cylinder communicates with the end of the second cylinder close to the door through the air pipe, the second cylinder is provided with a fourth piston, the fourth A threaded rod is installed on the side of the piston close to the door body, and the threaded rod is located in the middle of the two door bodies; The connecting shaft fixed on the end wall of the brake cylinder, the axis of the connecting shaft coincides with the center line of the brake cylinder, and two third connecting rods are installed on the connecting shaft, and the two third connecting rods are respectively connected with the two door hinge; The threaded rod is threaded with a second internal thread sleeve, and the second internal thread sleeve is hinged with two second connecting rods, and the two second connecting rods are respectively hinged with two third connecting rods; A strut is fixed on the other side of the fourth piston, and the end of the strut away from the fourth piston passes through the second cylinder and extends to the outside, and a third spring is connected between the strut and the second cylinder , the force of the third spring on the pole is towards the side of the door body. 5. The adjustable drainage safety gate of farmland drainage ditch according to claim 1, characterized in that, an installation groove is opened on the outer wall of the gate pier, and an auxiliary pier is arranged in the installation groove, and the auxiliary pier It is horizontally slidingly connected with the gate pier, and an adjustment mechanism for driving the auxiliary pier to move is installed in the gate pier. 6. The adjustable drainage safety gate of farmland drainage ditches as claimed in claim 5, wherein the adjustment mechanism comprises: Vertically rotate the two-way screw installed in the gate pier; Two first internal threaded sleeves threadedly connected to the two threaded sections of the two-way screw rod; The first connecting rod is connected between the first internal thread sleeve and the auxiliary pier, and the two ends of the first connecting rod are respectively hinged with the first internal thread sleeve and the auxiliary pier. 7. The adjustable drainage safety gate of farmland drainage ditch according to claim 6, characterized in that, a stabilizing component is installed on the gate pier, and the stabilizing component comprises: A piston chamber set in the side wall of the gate pier close to the water flow direction, the length direction of the piston chamber is parallel to the water flow direction, and a third piston is arranged in the piston chamber; The second connecting rod fixed on the third piston, the first spring is set on the second connecting rod in the piston chamber, and the two ends of the first spring are respectively in conflict with the third piston and one end of the piston chamber, and the first spring is opposite to the second connecting rod. The force of the three pistons is opposite to the direction of water flow; A single-stage flywheel installed on a two-way screw rod, an arc track is fixed on the outer wall of the single-stage flywheel; Rotate the drive rod connected to the two-way screw rod and located on one side of the single-stage flywheel. A pin shaft is fixed at one end of the second connecting rod close to the drive rod. A movable slot for the pin shaft to pass through and slide is opened on the drive rod ; The driving pin is fixed on the driving rod, and the driving pin is inserted into the arc track, and the second spring is arranged in the arc track, and the two ends of the second spring are respectively connected with the driving pin and one end of the roundness track, and the second spring The force on the drive pin is counterclockwise. 8 . The adjustable drainage safety gate of farmland drainage ditches according to claim 7 , wherein a plurality of connection anchors are fixed at intervals on the outer wall of the auxiliary pier, and the connection anchors are inserted into the side slope of the ditch. 9. The adjustable drainage safety gate of farmland drainage ditch according to claim 8, characterized in that, a second piston is arranged inside the connecting anchor, and the second piston is connected to the end of the connecting anchor away from the auxiliary pier. There are a plurality of arc-shaped expansion sheets, and a plurality of protrusions are provided on the outer wall of the expansion sheet, and a channel for the movement of the arc-shaped expansion sheet is opened on the side wall of the connecting anchor, and the piston chamber passes through The first communication pipe communicates with the end of the connection anchor provided with the second piston. 10. The adjustable drainage safety gate of farmland drainage ditch according to claim 1, characterized in that, the gate pier is fixedly connected to the side slope of the ditch, and the bottom weir is fixedly connected to the ditch bed.

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