Water gate opening and closing equipment capable of automatically adjusting opening degree of gate

Abstract

The utility model discloses water gate opening and closing equipment capable of automatically adjusting the opening degree of a gate, and particularly relates to the field of water gate opening and closing equipment, the water gate opening and closing equipment comprises a dam body, a first gate, a second gate, a hydraulic opening and closing assembly, a gear opening and closing assembly and an automatic adjusting assembly, the first gate is installed on the inner side of the dam body, and the second gate is arranged on one side of the first gate; hydraulic opening and closing assemblies are arranged on the side end faces of the first gate and the second gate, gear opening and closing assemblies are arranged on the bottom end faces of the first gate and the second gate, and automatic adjusting assemblies are arranged on the contact faces of the first gate and the second gate with the hydraulic opening and closing assemblies and the gear opening and closing assemblies. After the moving angles of the first gate and the second gate are detected through the angle detection mechanism, when the first gate and the second gate are opened, the opening and closing angle of the water gate is changed due to the impact of water flow; and then the first gate and the second gate can be accurately controlled to be adjusted within a proper angle range through the steel wire rope adjusting mechanism.

Description

Technical Field

[0001] The utility model relates to the field of water gate opening and closing equipment, and more specifically, to a water gate opening and closing equipment which can automatically adjust the gate opening. Background Art

[0002] Sluice gate opening and closing equipment refers to mechanical, hydraulic or electric devices used to control the opening and closing of sluice gates. These devices can be remotely or automatically controlled to adjust water flow and water level to meet various water conservancy needs such as flood control, irrigation, and shipping;

[0003] For example, application number CN201721745800.1 discloses an easy-to-operate sluice for water conservancy projects. When operating the hand wheel, the handle can be used to increase the length of the lever arm to help the worm to move so as to operate the opening and closing of the gate. An oil bottle is provided on the upper side of the worm, and the oil bottle is connected to a blowing ball. The worm can be sprayed with lubricating oil by pressing the blowing ball, which is convenient for operators to maintain the equipment and increase the life of the equipment. In addition, a pulley is provided in the gate frame to reduce the friction resistance during the opening and closing of the gate, and a sealing groove with a sewage discharge channel is provided at the bottom of the gate frame, which not only increases the closing capacity of the gate, but also facilitates the drainage of sewage from the sealing groove. In the prior art, there are many ways to open and close the gate. After the sluice is opened, the opening and closing angle of the sluice will change due to the impact of the water flow, and thus the opening of the gate cannot be accurately controlled.

[0004] Therefore, in view of the above problems, a sluice gate opening and closing device which can automatically adjust the gate opening is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a water gate opening and closing device which automatically adjusts the gate opening, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water gate opening and closing device for automatically adjusting the gate opening, comprising a dam body, a first gate, a second gate, a hydraulic opening and closing assembly, a gear opening and closing assembly and an automatic adjustment assembly, wherein the first gate is installed on the inner side of the dam body, and the second gate is arranged on one side of the first gate, the side end surfaces of the first gate and the second gate are provided with the hydraulic opening and closing assembly, the bottom end surfaces of the first gate and the second gate are provided with the gear opening and closing assembly, and the contact surfaces of the first gate and the second gate with the hydraulic opening and closing assembly and the gear opening and closing assembly are provided with the automatic adjustment assembly;

[0007] The automatic adjustment component includes an angle detection mechanism and a wire rope adjustment mechanism. The contact surfaces of the first gate and the second gate with the dam body are provided with a rotating shaft. The angle detection mechanism includes a limit clamp and a detection gear. The limit clamp is limitedly installed on the outer diameter surface of the rotating shaft, and the outer diameter surface of the limit clamp is provided with teeth. The limit clamp is meshed and connected with the detection gear, and a transmission shaft is penetrated through the center of the detection gear, and a grating encoder is provided on the outer diameter surface of the transmission shaft. The wire rope adjustment mechanism includes a first servo motor and a first torque multiplier. The output end of the first servo motor is provided with a first torque multiplier, and the output end of the first torque multiplier is provided with a wire rope take-up drum, and the wire rope take-up drum is fixedly connected with one end of the adjustment steel rope, and the other end of the adjustment steel rope is fixedly connected with a limit block through a guide wheel group, and the limit block is installed on the side end surface of the first gate and the second gate.

[0008] Preferably, the first gate is in a "<" shape, the second gate is in a ">" shape, and the first gate and the second gate are arranged opposite to each other. Two groups of automatic adjustment components are provided, and the automatic adjustment components are installed on the same side of the first gate and the second gate. The hydraulic opening and closing component is installed on one side of the first gate. The hydraulic opening and closing component includes a fixed block and a hydraulic cylinder. Two groups of fixed blocks are provided, and the two groups of fixed blocks are respectively installed at both ends of the hydraulic cylinder. One end of the hydraulic cylinder is installed on one side of the first gate through the fixed block, and the other end of the hydraulic cylinder is installed on the side end surface of the first gate through the fixed block. The contact surface between the fixed block and the hydraulic cylinder is provided with a bearing.

[0009] Preferably, the gear opening and closing assembly includes a second servo motor and a second torque multiplier, the output end of the second servo motor is provided with a second torque multiplier, and the output end of the second torque multiplier is provided with a first transmission gear, the first transmission gear is meshedly connected with the second transmission gear, and the second transmission gear is specifically installed at one end of the rotating shaft.

[0010] Preferably, the limit clamp and the detection gear form a gear meshing structure, the grating encoder and the first servo motor are electrically connected to a controller, the contact surface between the adjustment steel rope and the limit block is provided with a bearing, and the adjustment steel rope is fixedly connected to the limit block along the tangent of the guide wheel group.

[0011] Preferably, the first gate and the second gate form a rotating structure rotating around the center of the rotating shaft with the dam body through the rotating shaft, the hydraulic opening and closing assembly and the gear opening and closing assembly are both installed inside the protective cover, and the hydraulic cylinder fixes the rotating structure rotating around the center of the bearing through the bearing and the fixing block.

[0012] Preferably, the limit clamp and the rotating shaft form a fixed limit connection, the first transmission gear and the second transmission gear form a gear meshing structure, the second servo motor is electrically connected to a controller, and the controller is installed inside the protective cover.

[0013] Technical effects and advantages of the utility model:

[0014] Compared with the prior art, this sluice gate opening and closing device that automatically adjusts the gate opening is in use, wherein the direction of water flow is from the first gate to the second gate, wherein the hydraulic opening and closing component and the gear opening and closing component are used to control the opening and closing of the first gate to the second gate, wherein one group of hydraulic opening and closing components are provided, and two groups of gear opening and closing components are provided, and automatic adjustment components are installed on one side of the first gate and the second gate, and the automatic adjustment component includes an angle detection mechanism and a wire rope adjustment mechanism. After the angle of movement of the first gate and the second gate is detected by the angle detection mechanism, when the first gate and the second gate are opened, the opening and closing angles of the first gate and the second gate change due to the impact of the water flow, and the opening and closing angles of the sluice gates are changed, the wire rope adjustment mechanism can accurately control the first gate and the second gate to be adjusted within an appropriate angle range, thereby achieving the effect of automatically adjusting the opening and closing angles of the gates.

[0015] Compared with the prior art, the sluice gate opening and closing device which automatically adjusts the gate opening is used, wherein the direction of water flow is from the first gate to the second gate, so that the water flow flows, wherein the hydraulic opening and closing component and the gear opening and closing component are used to control the opening and closing of the first gate to the second gate, wherein the hydraulic opening and closing component is provided in one group, and the gear opening and closing component is provided in two groups, the two groups of gear opening and closing components are respectively installed on the bottom end surfaces of the first gate and the second gate, and one group of hydraulic opening and closing components is installed on the side end surface of the first gate, and the hydraulic opening and closing components play a supporting role for the first gate, wherein when the first gate is opened When the gate and the second gate are opened, the hydraulic cylinder in the hydraulic opening and closing assembly is started, and the second servo motor in the gear opening and closing assembly is started at the same time. The second servo motor drives the first transmission gear to rotate through the second torque multiplier, and the first transmission gear is meshed with the second transmission gear to drive the first gate and the second gate to rotate, so that the first gate and the second gate are rotated around the center of the rotating shaft, and then the first gate and the second gate are controlled to open and close. Through the above structure and the support opening and closing method, a stable supporting force is exerted on the first gate so that the first gate can be opened and closed.

[0016] Compared with the prior art, during use, the sluice gate opening and closing device for automatically adjusting the gate opening utilizes an automatic adjustment component to fine-tune the opening and closing angles of the first gate and the second gate, thereby preventing the opening and closing angles of the first gate and the second gate from changing due to the impact of water flow, wherein an angle detection mechanism is used to detect the opening and closing angles of the first gate and the second gate, wherein a limit clamp in the angle detection mechanism is fixedly mounted on the outer diameter surface of the rotating shaft, and when the first gate and the second gate rotate, the rotating shaft rotates with the rotation of the first gate and the second gate, so that the limit clamp rotates, and since the detection gear is meshedly connected with the limit clamp gear, the detection gear rotates, and the detection gear is provided with a grating encoder through the transmission shaft, so that the transmission shaft can be detected by the grating encoder The rotation angle of the first gate and the second gate is monitored in real time due to the synchronous rotation of the detection gear and the limit clamp, and after the detection, the first gate and the second gate are adjusted within a suitable angle range through the wire rope adjustment mechanism, wherein the first servo motor is started, and the first servo motor drives the wire rope take-up drum to rotate through the first torque multiplier, thereby contracting the adjustment steel rope, and one end of the adjustment steel rope is fixedly connected to the wire rope take-up drum, and the other end of the adjustment steel rope is fixedly connected to the limit block along the tangent of the guide wheel group, and the adjustment steel rope is contracted, so that the first gate and the second gate are adjusted within a suitable angle range, thereby avoiding the opening and closing angles of the first gate and the second gate being changed due to the impact of water flow, thereby affecting the requirements of water conservancy needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a partial top view of the structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the top view of the gear opening and closing assembly of the utility model.

[0019] Figure 3 This is a front view structural diagram of the automatic adjustment component of the utility model.

[0020] Figure 4 It is a schematic diagram of the side structure of the first torque multiplier of the utility model.

[0021] Figure 5 This is a schematic diagram of the top view of the grating encoder of the utility model.

[0022] Figure 6 This is a front view structural diagram of the gear opening and closing assembly of the utility model.

[0023] Figure 7 This is a side structural diagram of the gear opening and closing assembly of the utility model.

[0024] The accompanying drawings are marked as follows: 1. dam body; 2. first gate; 3. second gate; 4. hydraulic opening and closing assembly; 41. fixing block; 42. hydraulic cylinder; 5. gear opening and closing assembly; 51. second servo motor; 52. second torque multiplier; 53. first transmission gear; 54. second transmission gear; 6. automatic adjustment assembly; 61. angle detection mechanism; 611. limit clamp; 612. detection gear; 613. grating encoder; 62. wire rope adjustment mechanism; 621. first servo motor; 622. first torque multiplier; 623. wire rope take-up drum; 624. adjustment rope; 625. guide wheel group; 626. limit block; 63. rotating shaft. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0026] As attached Figures 1 to 7 A water gate opening and closing device for automatically adjusting the gate opening shown in the figure comprises a dam body 1, a first gate 2, a second gate 3, a hydraulic opening and closing assembly 4, a gear opening and closing assembly 5 and an automatic adjustment assembly 6, wherein the first gate 2 is installed on the inner side of the dam body 1, and the second gate 3 is arranged on one side of the first gate 2, the side end surfaces of the first gate 2 and the second gate 3 are provided with the hydraulic opening and closing assembly 4, the bottom end surfaces of the first gate 2 and the second gate 3 are provided with the gear opening and closing assembly 5, and the contact surfaces of the first gate 2 and the second gate 3 with the hydraulic opening and closing assembly 4 and the gear opening and closing assembly 5 are provided with the automatic adjustment assembly 6;

[0027] The automatic adjustment component 6 includes an angle detection mechanism 61 and a wire rope adjustment mechanism 62. The contact surfaces of the first gate 2 and the second gate 3 with the dam body 1 are provided with a rotating shaft 63. The angle detection mechanism 61 includes a limit clamp 611 and a detection gear 612. The limit clamp 611 is limitedly installed on the outer diameter surface of the rotating shaft 63, and the outer diameter surface of the limit clamp 611 is provided with teeth. The limit clamp 611 is meshedly connected with the detection gear 612, and a transmission shaft is provided through the center of the detection gear 612, and the outer diameter surface of the transmission shaft is provided with a light The gate encoder 613, the wire rope adjustment mechanism 62 includes a first servo motor 621 and a first torque multiplier 622, the output end of the first servo motor 621 is provided with the first torque multiplier 622, the output end of the first torque multiplier 622 is provided with a wire rope take-up drum 623, the wire rope take-up drum 623 is fixedly connected with one end of an adjustment steel rope 624, the other end of the adjustment steel rope 624 is fixedly connected with a limit block 626 through a guide wheel group 625, and the limit block 626 is installed on the side end surface of the first gate 2 and the second gate 3.

[0028] Wherein: the opening and closing angles of the first gate 2 and the second gate 3 are fine-tuned by the automatic adjustment component 6, and the angle detection mechanism 61 is used to detect the opening and closing angles of the first gate 2 and the second gate 3, wherein the limit clamp 611 in the angle detection mechanism 61 is fixedly installed on the outer diameter surface of the rotating shaft 63, and when the first gate 2 and the second gate 3 rotate, the rotating shaft 63 will rotate with the rotation of the first gate 2 and the second gate 3, so that the limit clamp 611 rotates, and because the detection gear 612 is meshed with the limit clamp 611, so that the detection gear 612 rotates, and the detection gear 612 is provided with a grating encoder 613 through the transmission shaft, so that the rotation angle of the transmission shaft can be detected by the grating encoder 613, and because the detection gear 612 and the limit clamp 611 rotate synchronously, the first The rotation angle of the gate 2 and the second gate 3 is determined, and after detection, the wire rope adjustment mechanism 62 is used to adjust the first gate 2 and the second gate 3 within a suitable angle range, wherein the first servo motor 621 is started, and the first servo motor 621 drives the wire rope take-up drum 623 to rotate through the first torque multiplier 622, thereby contracting the adjustment rope 624, and one end of the adjustment rope 624 is fixedly connected to the wire rope take-up drum 623, and the other end of the adjustment rope 624 is fixedly connected to the limit block 626 along the tangent of the guide wheel group 625, and by contracting the adjustment rope 624, the first gate 2 and the second gate 3 are adjusted within a suitable angle range, so as to avoid the opening and closing angles of the first gate 2 and the second gate 3 changing due to the impact of water flow, thereby avoiding affecting the requirements of water conservancy. Example 2

[0029] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 7 As shown, see the following description for details:

[0030] As a preferred embodiment, the first gate 2 is in a "<" shape, the second gate 3 is in a ">" shape, and the first gate 2 and the second gate 3 are arranged opposite to each other. Two groups of automatic adjustment components 6 are provided, and the automatic adjustment components 6 are installed on the same side of the first gate 2 and the second gate 3. The hydraulic opening and closing component 4 is installed on one side of the first gate 2. The hydraulic opening and closing component 4 includes a fixed block 41 and a hydraulic cylinder 42. The fixed block 41 is provided with two groups, and the two groups of fixed blocks 41 are respectively installed at both ends of the hydraulic cylinder 42. One end of the hydraulic cylinder 42 is installed on one side of the first gate 2 by using the fixed block 41, and the other end of the hydraulic cylinder 42 is installed on the side end surface of the first gate 2 through the fixed block 41. The contact surface between the fixed block 41 and the hydraulic cylinder 42 is provided with a bearing, wherein the water The direction of water flow is from the first gate 2 to the second gate 3 so that the water flows, wherein the hydraulic opening and closing component 4 and the gear opening and closing component 5 are used to control the opening and closing of the first gate 2 to the second gate 3, one group of hydraulic opening and closing components 4 is provided, and two groups of gear opening and closing components 5 are provided, the two groups of gear opening and closing components 5 are respectively installed on the bottom end surfaces of the first gate 2 and the second gate 3, and one group of hydraulic opening and closing components 4 is installed on the side end surface of the first gate 2, and the hydraulic opening and closing components 4 play a supporting role for the first gate 2, wherein when the first gate 2 and the second gate 3 are opened, the hydraulic cylinder 42 in the hydraulic opening and closing component 4 is started, and the supporting opening and closing method is used to provide a stable supporting force for the first gate 2 so that the first gate 2 can be opened and closed.

[0031] As a preferred embodiment, the gear opening and closing assembly 5 includes a second servo motor 51 and a second torque multiplier 52, the output end of the second servo motor 51 is provided with a second torque multiplier 52, and the output end of the second torque multiplier 52 is provided with a first transmission gear 53, the first transmission gear 53 is meshedly connected with the second transmission gear 54, and the second transmission gear 54 is specifically installed at one end of the rotating shaft 63, and the second servo motor 51 in the gear opening and closing assembly 5 is started at the same time, and the second servo motor 51 uses the second torque multiplier 52 to drive the first transmission gear 53 to rotate, and because the first transmission gear 53 is meshedly connected with the second transmission gear 54, so as to drive the first gate 2 and the second gate 3 to rotate, so that the first gate 2 and the second gate 3 rotate around the center of the rotating shaft 63, so as to control the opening and closing of the first gate 2 and the second gate 3.

[0032] As a preferred embodiment, the limit clamp 611 and the detection gear 612 form a gear meshing structure, the grating encoder 613 and the first servo motor 621 are electrically connected to a controller, the contact surface between the adjustment steel rope 624 and the limit block 626 is provided with a bearing, and the adjustment steel rope 624 is fixedly connected to the limit block 626 along the tangent of the guide wheel group 625.

[0033] As a preferred embodiment, the first gate 2 and the second gate 3 form a rotating structure that rotates around the center of the rotating shaft 63 with the dam body 1 through the rotating shaft 63, the hydraulic opening and closing assembly 4 and the gear opening and closing assembly 5 are both installed inside the protective cover, and the hydraulic cylinder 42 fixes the rotating structure that rotates around the center of the bearing through the bearing and the fixed block 41.

[0034] As a preferred embodiment, the limit clamp 611 and the rotating shaft 63 form a fixed limit connection, the first transmission gear 53 and the second transmission gear 54 form a gear meshing structure, the second servo motor 51 is electrically connected to the controller, and the controller is installed inside the protective cover.

[0035] The working process of the utility model is as follows: the direction of water flow is from the first gate 2 to the second gate 3, and the hydraulic opening and closing component 4 is used to support the first gate 2. When the first gate 2 and the second gate 3 are opened, the hydraulic cylinder 42 in the hydraulic opening and closing component 4 is started, and the second servo motor 51 in the gear opening and closing component 5 is started at the same time. The second servo motor 51 drives the first transmission gear 53 to rotate by the second torque multiplier 52, and the first transmission gear 53 is meshed and connected with the second transmission gear 54 to drive the first gate 2 and the second gate 3 to rotate, so that the first gate 2 and the second gate 3 rotate around the center of the rotating shaft 63, thereby controlling the opening and closing of the first gate 2 and the second gate 3. During use, the angle detection mechanism 61 is used to detect the opening and closing angles of the first gate 2 and the second gate 3, and the limit clamp 611 in the angle detection mechanism 61 is fixedly installed on the outer diameter surface of the rotating shaft 63;

[0036] When the first gate 2 and the second gate 3 rotate, the rotating shaft 63 rotates with the rotation of the first gate 2 and the second gate 3, and the limit clamp 611 rotates. Since the detection gear 612 is meshed with the limit clamp 611, the detection gear 612 rotates. The detection gear 612 is provided with a grating encoder 613 through the transmission shaft. The grating encoder 613 is used to detect the rotation angle of the transmission shaft. The detection gear 612 and the limit clamp 611 rotate synchronously to detect the rotation angle of the first gate 2 and the second gate 3. After the detection, the wire rope is used to adjust the machine. The structure 62 adjusts the first gate 2 and the second gate 3 within a suitable angle range, wherein the first servo motor 621 is started, and the first servo motor 621 uses the first torque multiplier 622 to drive the wire rope take-up drum 623 to rotate, and the adjustment rope 624 is contracted, and one end of the adjustment rope 624 is fixedly connected to the wire rope take-up drum 623, and the other end of the adjustment rope 624 is fixedly connected to the limit block 626 along the tangent of the guide wheel group 625, and the adjustment rope 624 is contracted to adjust the first gate 2 and the second gate 3 within a suitable angle range.

Claims

1. A sluice gate opening and closing device for automatically adjusting the gate opening, comprising a dam body (1), a first gate (2), a second gate (3), a hydraulic opening and closing component (4), a gear opening and closing component (5) and an automatic adjustment component (6), characterized in that: The first gate (2) is installed on the inner side of the dam body (1), and a second gate (3) is arranged on one side of the first gate (2); the side end surfaces of the first gate (2) and the second gate (3) are provided with a hydraulic opening and closing component (4); the bottom end surfaces of the first gate (2) and the second gate (3) are provided with a gear opening and closing component (5); and the contact surfaces of the first gate (2) and the second gate (3) with the hydraulic opening and closing component (4) and the gear opening and closing component (5) are provided with an automatic adjustment component (6); The automatic adjustment component (6) comprises an angle detection mechanism (61) and a wire rope adjustment mechanism (62); a rotating shaft (63) is provided on the contact surfaces of the first gate (2) and the second gate (3) with the dam body (1); the angle detection mechanism (61) comprises a limit clamp (611) and a detection gear (612); the limit clamp (611) is limitably mounted on the outer diameter surface of the rotating shaft (63); the outer diameter surface of the limit clamp (611) is provided with teeth; the limit clamp (611) is meshingly connected with the detection gear (612); a transmission shaft is provided through the center of the detection gear (612); and the outer diameter surface of the transmission shaft is provided with a light guide. A gate encoder (613), the wire rope adjustment mechanism (62) comprising a first servo motor (621) and a first torque multiplier (622), the output end of the first servo motor (621) being provided with the first torque multiplier (622), the output end of the first torque multiplier (622) being provided with a wire rope take-up drum (623), the wire rope take-up drum (623) being fixedly connected to one end of an adjustment steel rope (624), the other end of the adjustment steel rope (624) being fixedly connected to a limit block (626) via a guide wheel assembly (625), and the limit block (626) being mounted on the side end surfaces of the first gate (2) and the second gate (3).

2. A water gate opening and closing device for automatically adjusting the gate opening according to claim 1, characterized in that: The first gate (2) is in a "<" shape, the second gate (3) is in a ">" shape, and the first gate (2) and the second gate (3) are arranged opposite to each other. Two groups of the automatic adjustment components (6) are provided, and the automatic adjustment components (6) are both installed on the same side of the first gate (2) and the second gate (3). The hydraulic opening and closing component (4) is installed on one side of the first gate (2). The hydraulic opening and closing component (4) comprises a fixed block (41) and a hydraulic cylinder (42). Two groups of the fixed blocks (41) are provided, and the two groups of the fixed blocks (41) are respectively installed at both ends of the hydraulic cylinder (42). One end of the hydraulic cylinder (42) is installed on one side of the first gate (2) through the fixed block (41), and the other end of the hydraulic cylinder (42) is installed on the side end surface of the first gate (2) through the fixed block (41). A bearing is provided on the contact surface between the fixed block (41) and the hydraulic cylinder (42).

3. A water gate opening and closing device for automatically adjusting the gate opening according to claim 2, characterized in that: The gear opening and closing assembly (5) comprises a second servo motor (51) and a second torque multiplier (52); the output end of the second servo motor (51) is provided with the second torque multiplier (52); the output end of the second torque multiplier (52) is provided with a first transmission gear (53); the first transmission gear (53) is meshingly connected with a second transmission gear (54); and the second transmission gear (54) is specifically mounted on one end of the rotating shaft (63).

4. A water gate opening and closing device for automatically adjusting the gate opening according to claim 3, characterized in that: The limit clamp (611) and the detection gear (612) form a gear meshing structure, the grating encoder (613) and the first servo motor (621) are electrically connected to a controller, the contact surface between the adjustment steel rope (624) and the limit block (626) is provided with a bearing, and the adjustment steel rope (624) is fixedly connected to the limit block (626) along the tangent of the guide wheel group (625).

5. The water gate opening and closing device for automatically adjusting the gate opening according to claim 3 is characterized in that: The first gate (2) and the second gate (3) form a rotating structure rotating around the center of the rotating shaft (63) with the dam body (1) via the rotating shaft (63); the hydraulic opening and closing assembly (4) and the gear opening and closing assembly (5) are both installed inside the protective cover; and the hydraulic cylinder (42) fixes the rotating structure rotating around the center of the bearing via the bearing and the fixing block (41).

6. The water gate opening and closing device for automatically adjusting the gate opening according to claim 3 is characterized in that: The limiting clamp (611) and the rotating shaft (63) form a fixed limiting connection, the first transmission gear (53) and the second transmission gear (54) form a gear meshing structure, and the second servo motor (51) is electrically connected to a controller, and the controller is installed inside the protective cover.

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