Double-leaf, same-direction, double-opening hydraulic automatic gate and its use method

Abstract

The present invention relates to a double-leaf, same-direction, double-opening hydraulically controlled gate and its use method. The double-leaf, same-direction, double-opening hydraulically controlled gate comprises a gate I rotatably connected between two adjacent gate piers via a vertically arranged gate shaft I. A float chamber, an inlet pipe connecting the float chamber with the upstream side of the gate pier, and a discharge pipe connecting the float chamber with the downstream side of the gate pier are provided within the gate pier between the two gates. The inlet end of the inlet pipe is provided with an inlet valve, and the outlet end of the discharge pipe is provided with a discharge valve. A float is provided within the float chamber, which drives the gate I for rotation via a first transmission system. The present invention utilizes a water source upstream of the gate as power, controls the water level within the float chamber via the inlet valve and the discharge valve, and thereby controls the rise and fall of the float, thereby achieving the opening and closing of the gate. The gate shaft is arranged in the center of the gate, so that the gate plates on both sides of the shaft are subjected to balanced forces, significantly reducing the control force required to open and close the gate. The gate utilizes its upstream water source as power, eliminating various proprietary facilities such as a hoist and close machine, thereby reducing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of water gates, and in particular to a double-leaf, same-direction, double-opening hydraulic automatic control gate and a method of using the same. Background Art

[0002] As a hydraulic structure, sluice gates have been widely used in practice. However, the opening and closing of sluice gates are mainly controlled by external power, such as various winches and screw-type hoists. Usually, sluice gates are opened and closed vertically. Due to the pressure of the water flow, the friction between the gate and the gate slot is large. At the same time, the gate is heavy and requires a large lifting force. In addition, a dedicated hoisting room is required, which is complex in structure, expensive, cumbersome to operate and maintain, and inconvenient to use. Summary of the Invention

[0003] In view of the current status of the existing technology, the present invention provides a double-leaf, same-direction, double-opening hydraulic automatic control gate and a method of using the same, so that when the gate is working, the water source upstream of the gate can be used as power, thereby realizing automatic control of the gate. There is no need for supporting electricity, power machines, various hoisting machines and other facilities, which is more convenient for field work.

[0004] The present invention is achieved through the following technical solution, which provides a double-leaf, same-direction, double-opening hydraulic self-controlled gate, including a gate Ⅰ that is rotatably connected between two adjacent gate piers through a vertically arranged gate shaft Ⅰ; a floating chamber is provided in the gate pier, an inlet pipe connecting the floating chamber with the upstream of the gate pier, and a discharge pipe connecting the floating chamber with the downstream of the gate pier, the inlet end of the inlet pipe is provided with an inlet valve, and the outlet end of the discharge pipe is provided with a discharge valve; a float is provided in the floating chamber, which drives the gate Ⅰ to rotate through a first transmission system.

[0005] This solution sets a gate I that rotates around a vertical gate shaft I. When the drain valve is closed and the inlet valve is opened, the water flow upstream of the gate is introduced into the floating chamber, so that the water level in the floating chamber rises, and the float gradually rises under the buoyancy of the water. At this time, the float drives the gate I to rotate through the first transmission system, so that the gate I opens. When the opening of the gate I increases to the required opening, the inlet valve is closed to keep the water level in the floating chamber unchanged, so that the gate I can maintain a certain opening unchanged; when the inlet valve is closed and the drain valve is opened, the float chamber The water in the float chamber is led out of the float chamber through the drain pipe, causing the water level in the float chamber to drop, the buoyancy of the float to decrease, and the float gradually drops under the action of its own gravity. When the float drops, the first transmission system drives gate I to rotate in the opposite direction, so that gate I is gradually closed. The opening of gate I gradually decreases as the water level in the float chamber and the float drop, until the water level drops to a certain elevation and the float drops to a certain position, the opening of gate I is reduced to zero. At this time, the drain valve is closed and the gate remains closed.

[0006] As an optimization, the first transmission system includes a second pulley mounted on gate shaft I, a sixth pulley located below the floating body, a fifth pulley located above the floating body, a fourth pulley located on the side of the fifth pulley closest to gate I, and first and third pulleys located on the side of the fourth pulley closest to gate I. The axles of the first and third pulleys are arranged vertically, while the axles of the sixth, fifth, and fourth pulleys are arranged horizontally. The system also includes a first pull rope, one end of which is connected to the floating body and the other end of which passes through the sixth, fourth, third, second, first, and fifth pulleys in sequence before being connected to the floating body. Each pulley in this optimization scheme can be mounted on a gate pier with a floating chamber. Power is transmitted using a tensioned first pull rope. As the floating body moves up and down, the friction between the first pull rope and the second pulley drives the rotation of gate shaft I, thereby achieving the rotational opening and closing of gate I.

[0007] As an optimization, a seventh pulley is also included, located below the fourth pulley and on the side of the sixth pulley closest to the fourth pulley. The first pull rope is passed around the sixth pulley, the seventh pulley, and the fourth pulley in that order. This optimization solution increases the angle of the first pull rope around the sixth pulley by adding the seventh pulley, reducing friction between the first pull rope and the sixth pulley while also effectively preventing interference between the float and the first pull rope.

[0008] As an optimization, a gate II is installed on the other side of the gate pier with the floating chamber. This gate II is rotatably connected between two adjacent gate piers via a vertically arranged gate shaft II. As the floating body moves up and down, a second transmission system drives the rotation of gate II. This optimized solution has three gate piers, with gates installed between two adjacent piers, and the floating body drives the rotation of both gates simultaneously.

[0009] As an optimization, the second transmission system includes an eighth pulley mounted on gate shaft II, a sixth pulley located below the floating body, a fifth pulley located above the floating body, a fourth pulley located on the side of the fifth pulley closest to gate I, and ninth and tenth pulleys located on the side of the fourth pulley closest to gate II. The axles of the ninth and tenth pulleys are arranged vertically, while the axles of the sixth, fifth, and fourth pulleys are arranged horizontally. The system also includes a second pulley, one end of which is connected to the floating body and the other end of which passes through the sixth, fourth, tenth, eighth, ninth, and fifth pulleys in sequence before being connected to the floating body. Each pulley in this optimization scheme can be mounted on a gate pier with a floating chamber. Power is transmitted using a tensioned second pulley. As the floating body moves up and down, the friction between the second pulley and the eighth pulley drives the rotation of gate shaft II, thereby achieving the rotational opening and closing of gate II.

[0010] As an optimization, the gate axis I is located in the middle of the gate I in the width direction. During the gate closing process, since the gate axis I is in the middle of the gate I, the water pressure acting on the gate I is distributed on both sides of the gate axis and is basically the same, so the force required to open the gate I is relatively small.

[0011] As an optimization, a bracket fixed to the gate pier is also included. The bracket consists of a crossbeam rotatably connected to the gate shaft I via a bearing, and a diagonal rod connected to the crossbeam, the lower end of which is connected to the top of the gate pier. During installation, the lower end of the gate shaft I can be mounted on the gate base plate via a bearing. This optimization solution facilitates the installation of the upper end of the gate shaft I by providing a bracket. The diagonal rod is fixed to the top of the gate pier, which not only facilitates installation and fixation, but also ensures sufficient structural strength.

[0012] As an optimization, a connecting rod II connected to the inlet valve and a connecting rod I connected to the drain valve are also included. These connecting rods I and II extend upward to the top of the gate pier. This optimization solution allows staff on the gate pier to control the opening and closing of the drain valve through connecting rod I and the opening and closing of the inlet valve through connecting rod II, greatly improving operation convenience and avoiding the risk of drowning when diving underwater.

[0013] As an optimization, both the upstream and downstream ends of the gate pier are arched outwards. This optimization scheme reduces water flow resistance and makes the water inflow and outflow of the floating chamber smoother.

[0014] This solution also provides a method for using a double-leaf, same-direction, double-opening hydraulic automatic gate, including the following aspects:

[0015] Three piers are set in the gate chamber: the left pier, the middle pier and the right pier. When the gate needs to be opened, the drain valve is closed and the water inlet valve is opened. The water flow upstream of the gate is introduced into the floating chamber through the water inlet pipe, so that the water level in the floating chamber rises, and the buoyancy of the water is used to gradually rise the floating body. When the floating body moves upward, the first pull rope is used to drive gate I to rotate, and the second pull rope is used to drive gate II to rotate, so that gates I and gate II are gradually opened. When the opening of gates I and gate II increases to the required opening, the water inlet valve is closed to keep the water level in the floating chamber unchanged; when the gate needs to be closed, the water inlet valve is closed, the drain valve is opened, and the water in the floating chamber is led out of the floating chamber through the drain pipe, so that the water level in the floating chamber drops. The floating body gradually drops under the action of its own gravity. When the floating body drops, gate I is driven to rotate in the opposite direction by the first pull rope, and gate II is driven to rotate in the opposite direction by the second pull rope, so that gates I and gate II are gradually closed.

[0016] The beneficial effects of the present invention are:

[0017] 1. Using the water source upstream of the gate as the power, the water level in the floating chamber is controlled by the water inlet valve and the water discharge valve to control the rise and fall of the floating body, thereby realizing the opening and closing of the gate;

[0018] 2. The gate adopts a double-leaf layout, and the gate shaft is arranged in the center of the gate, so that the gate plates on both sides of the gate shaft are stressed evenly, which greatly reduces the control force of gate opening and closing;

[0019] 3. The gate uses its upstream water source as power, eliminating the various proprietary facilities such as the hoist and its supporting hoist room required for the opening and closing of the gate, reducing investment and maintenance costs, and making it more suitable for field operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view of the structure of the present invention;

[0021] Figure 2 for Figure 1 Middle II view;

[0022] Figure 3 Schematic diagram of the bracket structure;

[0023] As shown in the figure:

[0024] 1-Inspection gate slot, 2-Axle of the first pulley, 3-First pulley, 4-Bracket I, 5-First bearing, 6-Gate axle I, 7-Second pulley, 8-Axle of the third pulley, 9-Third pulley, 10-Gate I, 11-Fourth pulley, 12-Axle of the fourth pulley, 13-First pull rope, 14-Fifth pulley, 15-Axle of the fifth pulley, 16-Floating body, 17-Floating body chamber, 18-Middle pier, 19-Gate bottom plate, 20-Sixth pulley, 21-Seventh pulley, 22-Second bearing, 23-Gate II, 24-Eighth pulley, 25-Ninth pulley, 26-Tenth pulley, 27-Second pull rope, 28-Left pier, 29-Right pier, 30-Drain valve handle, 31-Fixer I, 32-Connecting rod I, 33-Drain pipe, 34-Drain valve, 35-Water inlet valve, 36-Water inlet pipe, 37-Connecting rod II, 38-Fixer II, 39-Water inlet valve handle, 40-Door shaft II, 41-Third bearing, 42-Fourth bearing, 43-Bracket II. DETAILED DESCRIPTION

[0025] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0026] Three gate piers are arranged in the gate chamber, which are the left pier 28, the middle pier 18 and the right pier 29 along the width direction of the water flow. Gate I is arranged between the left pier and the middle pier, and gate II 23 is arranged between the middle pier and the right pier. A gate bottom plate 19 is arranged at the bottom of the gate pier, and a bracket fixed on the gate pier is arranged at the top of the gate pier.

[0027] Bracket I4 is installed on the tops of the left and middle piers, while Bracket II43 is installed on the tops of the right and middle piers. Bracket I comprises a crossbeam pivotally connected to gate shaft I via bearings, and a diagonal rod fixedly connected to the crossbeam. The crossbeam has an aperture in the middle for securing the bearings, and the lower end of the diagonal rod is fixedly connected to the top of the gate pier. Bracket II43 has the same structure as Bracket I4, with its two diagonal rods fixedly attached to the tops of the middle and right piers, respectively.

[0028] Specifically, the double-leaf, same-direction, double-opening hydraulic automatic gate includes a gate Ⅰ10 that is rotatably connected between the left pier and the middle pier through a vertically arranged gate shaft Ⅰ. The gate Ⅰ10 is rectangular, and the width of the gate Ⅰ is adapted to the distance from the left pier to the middle pier. The gate shaft Ⅰ6 is fixed to the middle position in the width direction of the gate Ⅰ. The upper end of the gate shaft Ⅰ is installed on the crossbeam of the bracket through the second bearing 22, and the lower end of the gate shaft Ⅰ is installed on the gate bottom plate 19 through the first bearing 5.

[0029] The middle pier houses a float chamber 17, an inlet pipe 36 connecting the float chamber to the upstream side of the gate pier, and a discharge pipe 33 connecting the float chamber to the downstream side of the gate pier. The inlet end of the inlet pipe is equipped with an inlet valve 35, and the outlet end of the discharge pipe is equipped with a discharge valve 34. The float chamber houses a float 16, which drives gate I via a first transmission system. The length and width of the float are smaller than the planar dimensions of the float chamber to facilitate its free rise and fall within the chamber. The float chamber is a cavity for accommodating the float. Its height is determined by the water level fluctuation required to open and close the gate. The upper portion of the float chamber is open. The sixth and seventh pulleys are installed within the float chamber.

[0030] The first transmission system includes a second pulley 7 mounted on gate shaft I, a sixth pulley 20 located below the floating body, a fifth pulley 14 located above the floating body, a fourth pulley 11 located on the side of the fifth pulley closest to gate I 10, and a first pulley 3 and a third pulley 9 located on the side of the fourth pulley closest to gate I. The axles 2 and 8 of the first pulley are arranged vertically, while the axles 12, 15, and 6th pulleys are arranged horizontally. The first transmission system also includes a first pull rope 13, one end of which is connected to the floating body and the other end of which passes through the sixth pulley 20, fourth pulley 11, third pulley 9, second pulley 7, first pulley 3, and fifth pulley 14 in sequence before being connected to the floating body. Each pulley is mounted on a gate pier with a floating chamber and rotates with the movement of the first pull rope. The first transmission system of this embodiment further includes a seventh pulley 21 located below the fourth pulley 11 and on the side of the sixth pulley 20 close to the fourth pulley. The first pull rope passes around the sixth pulley 20, the seventh pulley, and the fourth pulley in sequence.

[0031] Both the upstream and downstream ends of the gate pier are outwardly arched, and a fixing member I is fixedly installed at the downstream end of the pier. A connecting rod I 32 is inserted through the fixing member I. The lower end of the connecting rod I 32 is connected to the water discharge valve 34, and the upper end of the connecting rod I 32 extends upward to the top of the gate pier. A water discharge valve handle 30 is installed at the upper end of the connecting rod I 32. A fixing member II is fixedly installed at the upstream end of the gate pier. A connecting rod II 37 is inserted through the fixing member II. The lower end of the connecting rod II 37 is connected to the water inlet valve 35, and the upper end of the connecting rod II 37 extends upward to the top of the gate pier. A water inlet valve handle 39 is installed at the upper end of the connecting rod II 37. Specifically, the inlet pipe inlet is connected to the water inlet valve, and the water outlet of the water inlet pipe is arranged in the floating chamber. The water inlet valve and water inlet pipe are arranged in the middle of the gate pier in plan view and near the gate bottom plate in elevation. The drain valve is connected to the drain pipe, the drain pipe inlet is arranged in the floating chamber, and the outlet is connected to the drain valve. The drain pipe and drain valve are arranged in the middle of the gate pier in plane and close to the gate bottom plate in elevation.

[0032] The dual-leaf, same-direction, double-opening hydraulically controlled gate of this embodiment also includes gate II 23. Gate II 23 is rectangular and rotatably connected between the center and right piers via a vertically mounted gate shaft 240. A second transmission system drives gate II's rotation as the floating body moves up and down. The width of gate II matches the distance between the center and right piers. Shaft II 40 is fixedly attached to the center of gate II's width and is located directly in the center of the gate chamber, between the center and right piers. The upper end of shaft II is mounted on the crossbeam of bracket II via a third bearing 41, while the lower end is mounted on the gate base plate 19 via a fourth bearing 42. Gates I and II can rotate around shafts I and II, respectively, to open or close the gates.

[0033] Specifically, the second transmission system includes an eighth pulley 24 mounted on gate shaft II, a sixth pulley 20 located below the floating body, a fifth pulley 14 located above the floating body, a fourth pulley 11 located on the side of the fifth pulley closest to gate I, and a ninth pulley 25 and a tenth pulley 26 located on the side of the fourth pulley closest to gate II. The axles of the ninth pulley 25 and tenth pulley 26 are arranged vertically, while the axles of the sixth, fifth, and fourth pulleys are arranged horizontally. The ninth pulley 25, tenth pulley, eighth pulley, third pulley 9, second pulley 7, and first pulley are located at the same height. This embodiment also includes a second pulley 27, one end of which is connected to the floating body and the other end of which passes sequentially around the sixth pulley 20, seventh pulley 21, fourth pulley 11, tenth pulley 26, eighth pulley 24, ninth pulley 25, and fifth pulley 14 before being connected to the floating body. One end of the second draw rope and the first draw rope are tied to the same point just above the floating body, and the other end of the second draw rope and the first draw rope are tied to the same point just below the floating body.

[0034] In this embodiment, a maintenance gate groove 1 is provided on the side wall of the water inlet end of the left pier, the right pier and the middle pier to cut off the flow during gate maintenance. The top elevations of the two side piers and the middle pier are equal and slightly higher than the top elevation of the gate.

[0035] During actual production, the gate can be a rectangular double-layer flat steel gate with vertically and horizontally intersecting support partitions arranged inside. The gate is fixed to the gate bottom plate and the bracket crossbeam through bearings. The floating body is a square body welded from steel plates, and the structure is required to be symmetrical to ensure force balance. The pulleys can be purchased from the market, with the second and eighth pulleys fixed to the gate shaft I and the gate shaft II respectively, and the remaining pulleys are fixed to the gate pier by their pulley shafts respectively. The pull rope is a steel cable with sufficient strength and no elasticity. The steel cable is wrapped around the pulley to ensure appropriate tightness to prevent slippage between the steel cable and the pulley. The bracket is made of welded steel or reinforced concrete structure to ensure sufficient strength and rigidity and no deformation during operation. The gate chamber can be made of reinforced concrete structure. The gate design of the present invention is unique, and it has made a qualitative leap compared with the existing technology in terms of principle, technology, and performance.

[0036] The method for using the double-leaf same-direction double-opening hydraulic automatic gate of the present invention includes the following aspects:

[0037] There are three gate piers in the gate chamber: the left pier, the middle pier and the right pier. When the gate needs to be opened, the drain valve is closed, the inlet valve is opened, and the water flow upstream of the gate is introduced into the floating chamber through the inlet pipe, so that the water level in the floating chamber rises, and the floating body is gradually raised by the buoyancy of the water. When the floating body moves upward, the gate I is driven to rotate counterclockwise by the first pull rope, and the gate II is driven to rotate counterclockwise by the second pull rope, so that the gates I and II are gradually opened. The size of the opening of the gates I and II gradually increases with the rise of the water level in the floating chamber and the rise of the floating body. When the opening of the gates I and II increases to the required opening, the inlet valve is closed to keep the water level in the floating chamber unchanged, and the two gates can maintain a certain opening unchanged; moreover, the gates I and II keep rotating synchronously, and their openings are the same. If the opening is further increased, the inlet valve can be opened again to introduce water into the floating chamber, so that the water level in the floating chamber further rises, the floating body rises, and the opening can be further increased until the operation needs are met. During the opening process of the gate, since the gate axis is in the middle of the gate, the water pressure acting on the gate is distributed on both sides of the axis, and its magnitude is basically the same, so that the force required to open the gate is relatively small; at the same time, the two gates are opened synchronously, and the sum of all the forces of water pressure on the two gates acts on the float through the pull rope, but the directions of the two forces are opposite and can just offset each other. This further reduces the control force for opening the gate, making it easier to control the opening and closing of the gate, reducing the volume and weight of the float, reducing investment, and making the gate easy to control during operation. The gate is always operating in a force balance state, and the structure is safer and more stable; when the gate needs to be closed, the water inlet valve is closed and the water release valve is opened, and the water in the float chamber is led out of the float chamber through the water release pipe, so that the water level in the float chamber drops, and the float gradually drops under the action of its own gravity. When the float drops, the first pull rope drives gate I to rotate clockwise, and the second pull rope drives gate II to rotate clockwise, so that gates I and gate II are gradually closed. The openings of gates I and II gradually decrease as the water level in the float chamber drops and the float descends, until the water level drops to a certain elevation and the float descends to a certain position, at which point the openings are reduced to zero. At this point, the drain valve is closed and the gates remain closed. Since gates I and II rotate synchronously and have the same opening, during the closing process, since the gate axis is in the middle of the gate, the water pressure acting on the gate is distributed on both sides of the axis, and their magnitudes are basically the same, making the force required to open the gate smaller. At the same time, the two gates remain closed synchronously, and the sum of all the forces of water pressure on each gate acts on the float through the pull rope, but the directions of the two forces are opposite and can just offset each other. This further reduces the control force for opening the gate, making it easier to control the opening and closing of the gate, reducing the volume and weight of the float, reducing investment, and making it easier to control the gate during operation. The gate is always in a state of force balance, and the structure is safer and more stable.

[0038] When you need to work again in the future, you can repeat the above steps to achieve it.

[0039] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A double-leaf, same-direction, double-opening hydraulic automatic gate, characterized by: It includes a gate I (10) rotatably connected between two adjacent gate piers via a vertically arranged gate shaft I (6); A floating chamber (17), a water inlet pipe (36) connecting the floating chamber with the upstream of the gate pier, and a water discharge pipe (33) connecting the floating chamber with the downstream of the gate pier are provided in the gate pier. The water inlet end of the water inlet pipe is provided with a water inlet valve (35), and the water outlet end of the water discharge pipe is provided with a water discharge valve (34). A floating body (16) is provided in the floating chamber and is driven to rotate the gate I by a first transmission system. The first transmission system comprises a second pulley (7) mounted on the gate shaft I, a sixth pulley (20) located below the floating body, a fifth pulley (14) located above the floating body, a fourth pulley (11) located on the side of the fifth pulley close to the gate I (10), and a first pulley (3) and a third pulley (9) located on the side of the fourth pulley close to the gate I, wherein the axles of the first pulley (3) and the third pulley (9) are arranged vertically, and the axles of the sixth pulley, the fifth pulley and the fourth pulley are arranged horizontally; It also includes a first pull rope (13) having one end connected to the floating body and the other end connected to the floating body after passing through the sixth pulley (20), the fourth pulley (11), the third pulley (9), the second pulley (7), the first pulley (3) and the fifth pulley (14) in sequence; A gate II (23) is further provided on the other side of the gate pier provided with the floating body chamber. The gate II (23) is rotatably connected between two adjacent gate piers via a vertically arranged gate shaft II (40). When the floating body moves up and down, the gate II is driven to rotate via a second transmission system. There are three gate piers, namely the left pier, the middle pier and the right pier. Gate I is set between the left pier and the middle pier, and gate II is set between the middle pier and the right pier. The second transmission system comprises an eighth pulley (24) mounted on the gate shaft II, a sixth pulley (20) located below the floating body, a fifth pulley (14) located above the floating body, a fourth pulley (11) located on the side of the fifth pulley close to the gate I, and a ninth pulley (25) and a tenth pulley (26) located on the side of the fourth pulley close to the gate II, wherein the axles of the ninth pulley (25) and the tenth pulley (26) are arranged vertically, and the axles of the sixth pulley, the fifth pulley and the fourth pulley are arranged horizontally; It also includes a second pull rope (27) having one end connected to the floating body and the other end connected to the floating body after passing through the sixth pulley (20), the fourth pulley (11), the tenth pulley (26), the eighth pulley (24), the ninth pulley (25) and the fifth pulley (14) in sequence.

2. The double-leaf, same-direction, double-opening hydraulic automatic gate according to claim 1 is characterized by: It also includes a seventh pulley (21) located below the fourth pulley (11) and on the side of the sixth pulley (20) close to the fourth pulley, and the first pull rope passes around the sixth pulley (20), the seventh pulley (21), and the fourth pulley (11) in sequence.

3. The double-leaf, same-direction, double-opening hydraulic automatic gate according to claim 1 is characterized by: The door shaft I is located in the middle position of the width direction of the gate I.

4. The double-leaf, same-direction, double-opening hydraulic automatic gate according to claim 1 is characterized by: It also includes a bracket fixed on the gate pier, which includes a beam rotatably connected to the gate shaft I through a bearing, and an inclined rod connected to the beam, and the lower end of the inclined rod is connected to the top of the gate pier.

5. The double-leaf, same-direction, double-opening hydraulic automatic gate according to claim 1 is characterized by: It also includes a connecting rod II (37) connected to the water inlet valve (35) and a connecting rod I (32) connected to the water discharge valve (34), wherein the connecting rod I and the connecting rod II extend upward to the top of the gate pier.

6. The double-leaf, same-direction, double-opening hydraulic automatic gate according to claim 1 is characterized by: The upstream and downstream ends of the gate pier are both arc-shaped and arch outward.

7. The method for using the double-leaf, same-direction, double-opening hydraulic automatic gate according to any one of claims 1 to 6, characterized in that: Including the following aspects: There are three gate piers in the gate chamber: the left pier, the middle pier and the right pier. When the gate needs to be opened, the drain valve is closed and the inlet valve is opened. The water flow upstream of the gate is introduced into the floating chamber through the inlet pipe, so that the water level in the floating chamber rises. The buoyancy of the water gradually rises the floating body. When the floating body moves upward, the first pull rope drives the gate I to rotate, and the second pull rope drives the gate II to rotate, so that the gates I and II are gradually opened. When the opening of the gates I and II increases to the required opening, the inlet valve is closed to keep the water level in the floating chamber unchanged. When the gate needs to be closed, the water inlet valve is closed, the drain valve is opened, and the water in the float chamber is led out of the float chamber through the drain pipe, so that the water level in the float chamber drops, and the float gradually drops under the action of its own gravity. When the float drops, the first pull rope drives gate I to rotate in the opposite direction, and the second pull rope drives gate II to rotate in the opposite direction, so that gates I and II are gradually closed.

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