Channel gate small opening operation slow vibration mechanism and arc gate
By adjusting the natural frequency of the gate and setting up vibration damping components, the resonance and vibration problems of the arc gate during small opening operation were solved, and safe and stable operation was achieved.
Patent Information
- Application Number
- CN202521927371.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-08
AI Technical Summary
The resonance problem caused by hydraulic jump when the arc gate is running at a small opening affects its safety and stability.
The gate's natural frequency is adjusted by a counterweight beam and drive assembly. Combined with a damping assembly, the gate floats up and down under the coupling effect of elastic expansion joints and hydraulic jump impact force, thus buffering water flow pulsation.
It effectively eliminates resonance, reduces vibration caused by hydraulic jump, and improves the safety and stability of the gate when operating at a small opening.
Smart Images
Figure CN224678634U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sluice gate technology, specifically relating to a damping mechanism for small opening operation of channel gates and an arc-shaped gate. Background Technology
[0002] For large-scale water conservancy projects such as the South-to-North Water Diversion Project, the use of arc-shaped gates is the most common. Structurally, an arc-shaped gate consists of an arc-shaped gate panel, swing arms connected to both sides of the gate panel, and a drive mechanism. The gate panel is opened by the swing arms being driven by the drive mechanism.
[0003] When an arc-shaped gate operates at a small opening, the water flow velocity decreases sharply over the distance from the gate to the downstream end, resulting in a common hydraulic jump on the downstream side. This hydraulic jump causes the pulsating water flow to continuously slap against the gate, causing gate vibration. Under normal circumstances, this vibration is weak and does not affect the safe operation of the gate. However, when the pulsating frequency of the water flow caused by the hydraulic jump approaches the gate's natural frequency, resonance will occur, leading to intensified gate vibration, which is highly detrimental to the safe operation of the gate. Utility Model Content
[0004] This utility model provides a vibration damping mechanism for channel gates operating at small openings and an arc-shaped gate, aiming to reduce the vibration that occurs when the channel gate operates at small openings and improve the safety and stability of gate operation.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Firstly, a damping mechanism for small-opening channel gate operation is provided, comprising: The counterweight beam is slidably connected at both ends to the two swing arms on both sides of the gate body; The drive assembly is located on the gate plate of the gate body and connected to the counterweight beam. It is used to drive the counterweight beam closer to or further away from the gate plate to adjust the natural frequency of the gate body. Multiple damping components are distributed sequentially at intervals on the bottom of the downstream side of the door panel. Each damping component includes a damping plate and an elastic telescopic member. One end of the damping plate is hinged to the door panel, and the other end extends towards the downstream side of the door panel. The two ends of the elastic telescopic member are respectively hinged to the damping plate and the door panel, and are used to drive the damping plate to float up and down when subjected to the hydraulic jump impact.
[0006] In conjunction with the first aspect, one possible implementation also includes a floating beam, which is slidably connected to the bottom of the downstream side of the gate panel and located above the lower water stop of the gate panel; each damping plate is hinged to the floating beam; wherein, when the gate body is opened to a small degree and a hydraulic jump occurs, the elastic expansion joint cooperates with the hydraulic jump impact to drive the damping plate to swing up and down and drive the floating beam to float up and down.
[0007] In some embodiments, the floating beam is provided with several sliding rods spaced apart along its axial direction, each sliding rod is slidably connected to the door panel, and each sliding rod and the door panel are provided with an elastic element.
[0008] For example, a guide ramp is provided on the upstream side of the floating beam.
[0009] In conjunction with the first aspect, in one possible implementation, the driving component includes: The rotary drive is fixedly connected to the downstream side of the door panel, and the output end of the rotary drive is connected to two sets of drums. Two sets of traction ropes are wound on two sets of drums respectively, and the winding directions are opposite. One set of traction ropes is connected to the upstream side of the counterweight beam, and the other set of traction ropes is connected to the downstream side of the counterweight beam.
[0010] For example, the drive assembly also includes two sets of guide wheels; one set of guide wheels is located on the gate body and upstream of the counterweight beam, and is used to guide one set of traction ropes to connect to the upstream side of the counterweight beam; the other set of guide wheels is located on the gate body and downstream of the counterweight beam, and is used to guide another set of traction ropes to connect to the downstream side of the counterweight beam.
[0011] In some embodiments, the bottom of the counterweight beam is provided with an inverted conical counterweight block.
[0012] For example, the small opening operation damping mechanism of the channel gate also includes two slides, which are respectively connected to the side walls of the two swing arms that are close to each other; the two ends of the counterweight beam are respectively connected to the two slides through sliding sleeves.
[0013] For example, a vibration sensor is installed on the gate panel, which is used to send vibration detection signals to the gate control system; the drive component is controlled by the gate control system.
[0014] The beneficial effects of the channel gate small-opening operation damping mechanism provided by this utility model are as follows: Compared with the prior art, the channel gate small-opening operation damping mechanism of this utility model drives the counterweight beam to move closer to or further away from the gate body through the drive component, thereby changing the overall structure and center of gravity of the gate body, thus changing the natural frequency of the gate body. When the gate body resonates due to the hydraulic jump in the small-opening operation state, the natural frequency of the gate body can be changed by adjusting the position of the counterweight beam, thereby eliminating the resonance and improving the safety and stability of the gate body in the small-opening operation. On this basis, the damping plates arranged at the bottom of the gate body float up and down under the coupling action of the elastic expansion member and the hydraulic jump impact force to buffer the water flow pulsation caused by the hydraulic jump, thereby reducing the vibration of the gate body caused by the hydraulic jump impact, which is conducive to further improving the safety and stability of the gate body in the small-opening operation.
[0015] Secondly, this utility model embodiment also provides an arc-shaped gate, including the above-mentioned channel gate small opening operation damping mechanism.
[0016] The beneficial effects of the channel gate provided by this utility model are as follows: Compared with the prior art, the arc-shaped gate of this utility model adopts the above-mentioned channel gate small opening operation damping mechanism. By adjusting the position of the counterweight beam, the natural frequency of the gate body is changed, thereby eliminating resonance; by utilizing the damping plates arranged at the bottom of the gate plate to float up and down under the coupling action of the elastic expansion member and the hydraulic jump impact force, the water flow pulsation caused by the hydraulic jump phenomenon is buffered, thereby reducing the vibration of the gate plate caused by the hydraulic jump impact; from the above two aspects of damping and eliminating resonance, the safety and stability of the gate body when operating at a small opening are improved. Attached Figure Description
[0017] Figure 1 A three-dimensional structural schematic diagram of the channel gate small opening operation damping mechanism provided in this embodiment of the utility model; Figure 2 A cross-sectional structural schematic diagram of the channel gate small opening operation damping mechanism provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the connection structure between the vibration damping component and the door panel used in an embodiment of this utility model.
[0018] In the diagram: 10. Counterweight beam; 11. Counterweight block; 20. Drive assembly; 21. Rotary drive component; 22. Drum; 23. Traction rope; 24. Guide wheel; 30. Vibration damping assembly; 31. Vibration damping plate; 32. Elastic telescopic component; 40. Floating beam; 41. Slide rod; 42. Elastic element; 43. Guide slope; 50. Slide carriage; 60. Vibration sensor; 70. Gate body; 71. Swing arm; 72. Gate panel. Detailed Implementation
[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0020] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.
[0021] It should be noted that the gate body in this embodiment can be an improvement on the commonly used arc-shaped gate in the prior art. A traditional arc-shaped gate includes a gate panel, swing arms, and a drive mechanism. The drive mechanism typically uses a hydraulic cylinder, which drives the swing arms connected to both sides of the gate panel to swing, thereby opening and closing the gate panel. For top-opening arc-shaped gates, the gate panel has water-stop structures on both sides and the bottom, using bottom and side water-stops to ensure the sealing between the gate panel and the channel. As this is a prior art construction, it will not be described in detail here.
[0022] It should be understood that when the gate body is opened at a small angle, i.e. in the small opening operation state, a narrow slit-like water passage is formed between the bottom of the gate plate and the bottom wall of the channel. Due to the higher water level, the upstream water flows into the downstream under the small opening gate plate under the action of water pressure. After entering the downstream, the water flow slows down quickly, so a water jump phenomenon will occur within one distance on the downstream side of the gate body.
[0023] The occurrence of hydraulic jump will cause pulsation of water flow on the downstream side of the gate body. Usually, the gate body is designed to take into account the vibration caused by water flow pulsation. Therefore, under normal circumstances, water flow pulsation will not affect the safe operation of the gate body. However, the gate body will be affected by hydraulic jump to some extent when operating at a small opening for a long time. Therefore, the impact of hydraulic jump on the gate body should be avoided as much as possible.
[0024] When the frequency of water flow pulsation caused by hydraulic jump is close to the natural frequency of the gate body, resonance is likely to occur. In this case, the operational safety and stability of the gate body will be greatly affected. In the existing technology, when the gate resonance problem is detected, it is usually necessary to adjust the opening of the gate body in time, so that the frequency of water flow pulsation deviates from the natural frequency of the gate body. However, this will undoubtedly cause changes in the flow rate, thereby changing the original plan of opening the gate for drainage from upstream to downstream, and causing a series of subsequent chain reactions, which is not conducive to the stability of the channel water conveyance operation.
[0025] Please refer to the following: Figures 1 to 3 The following describes the damping mechanism for small-opening operation of the channel gate provided by this utility model. The damping mechanism includes a counterweight beam 10, a drive assembly 20, and multiple damping assemblies 30. The two ends of the counterweight beam 10 are slidably connected to the swing arms 71 on both sides of the gate body 70. The drive assembly 20 is located on the gate plate 72 of the gate body 70 and connected to the counterweight beam 10, used to drive the counterweight beam 10 closer to or further away from the gate plate 72 to adjust the natural frequency of the gate body 70. Multiple damping assemblies 30 are sequentially and spaced apart at the bottom of the downstream side of the gate plate 72. Each damping assembly 30 includes a damping plate 31 and an elastic telescopic member 32. One end of the damping plate 31 is hinged to the gate plate 72, and the other end extends towards the downstream side of the gate plate 72. The two ends of the elastic telescopic member 32 are hinged to the damping plate 31 and the gate plate 72 respectively, used to drive the damping plate 31 to float up and down when subjected to hydraulic jump impact.
[0026] It is important to understand that the natural frequency of an object is also called its inherent frequency, which is only related to the object's inherent characteristics (such as mass, shape, material, etc.). In this embodiment, when the counterweight beam 10 slides on the swing arm 71 and its position relative to the gate plate 72 changes, the center of gravity and structure of the gate body 70 will change, thus causing a change in its natural frequency. By changing the natural frequency of the gate body 70, the current water flow pulsation frequency range can be avoided, thereby eliminating the resonance phenomenon.
[0027] The water flow pulsation caused by the water jump phenomenon will continuously impact the door panel 72. In this embodiment, a damping component 30 that can float up and down is provided on the downstream side of the door panel 72. The pulsating water flow first impacts the damping component 30, and most of the water flow impact is eliminated by the floating and swinging of the damping component 30. This can greatly reduce the impact force directly acting on the door panel 72, which is equivalent to establishing a buffer barrier on the downstream side of the door panel 72, thereby reducing the impact of water flow pulsation on the door panel 72.
[0028] In this embodiment, the floating process of the damping component 30 is as follows: while the damping plate 31 is hinged to the bottom of the door panel 72, the elastic telescopic component 32, such as a gas spring or a spring mounted on a telescopic cylinder, provides elastic support to the damping plate 31. When the pulsating water flow impacts the damping plate 31, the elastic telescopic component 32 will be compressed and the damping plate 31 will swing upward. As the compression of the elastic telescopic component 32 gradually increases and the pulsating water flow subsides, the damping plate 31 will start to swing downward. Thus, the damping plate 31 will continuously swing up and down as the pulsating water flow continues to impact.
[0029] Considering the ease of opening and closing the gate body 70, when it is necessary to open or close the gate body 70, the counterweight beam 10 can be driven away from the gate plate 72 by the drive component 20, so that the overall center of gravity of the gate body 70 is closer to its rotation center; when resonance occurs during small opening operation, the counterweight beam 10 can be driven closer to the gate plate 72 by the drive component 20 to change the overall natural frequency of the gate body 70.
[0030] The channel gate small-opening operation damping mechanism provided in this embodiment, compared with the prior art, drives the counterweight beam 10 to move closer to or further away from the gate plate 72 of the gate body 70 through the drive component 20. This changes the overall structure and center of gravity of the gate body 70, thereby changing the natural frequency of the gate body 70. When the gate body 70 resonates due to the hydraulic jump in the small-opening operation state, the natural frequency of the gate body 70 can be changed by adjusting the position of the counterweight beam 10, thereby eliminating the resonance and improving the safety and stability of the gate body 70 in the small-opening operation. On this basis, the damping plates 31 arranged at the bottom of the gate plate 72 float up and down under the coupling action of the elastic expansion member 32 and the hydraulic jump impact force to buffer the water flow pulsation caused by the hydraulic jump, thereby reducing the vibration of the gate plate 72 caused by the hydraulic jump impact, which is conducive to further improving the safety and stability of the gate body 70 in the small-opening operation.
[0031] In some embodiments, as a modified connection method between the aforementioned damping component 30 and the door panel 72, please refer to [link / reference]. Figure 2 and Figure 3 The damping mechanism for the small opening of the channel gate also includes a floating beam 40, which is slidably connected to the bottom of the downstream side of the gate plate 72 and located above the lower water stop of the gate plate 72; each damping plate 31 is hinged to the floating beam 40; when the gate body 70 is opened to a small degree and a water jump occurs, the elastic expansion member 32 cooperates with the water jump impact to drive the damping plate 31 to swing up and down and drive the floating beam 40 to float up and down.
[0032] Here, a floating beam 40 is set as the common connection base for each damping component 30, and then the floating beam 40 is slidably connected to the bottom of the door panel 72. This allows each damping component 30 to form an integral modular structure. On the one hand, this helps to improve the connection stability between each damping component 30 and the door panel 72. On the other hand, when the water flow pulsates and impacts each damping plate 31, causing the damping plate 31 to swing up and down, the floating beam 40 can also float up and down, thereby improving the buffering effect against the impact of the water flow pulsation.
[0033] Of course, considering the bottom water stop of the door panel 72 (i.e., the bottom water stop structure), the floating beam 40 needs to be positioned above the bottom water stop to ensure that the sealing between the bottom of the door panel 72 and the bottom wall of the channel is not affected after the door panel 72 is completely closed.
[0034] It should be noted that, as Figure 3 As shown, the floating beam 40 is provided with several sliding rods 41 spaced apart along its axial direction. Each sliding rod 41 is slidably connected to the door panel 72, and each sliding rod 41 and the door panel 72 are provided with an elastic element 42. Under normal circumstances, the connection relationship between the elastic expansion member 32 and the damping plate 31 can meet the needs of the floating beam 40 floating up and down under the impact of water flow pulsation. However, considering the stability of the floating beam 40's up and down movement, an elastic element 42, such as a spring, is used to establish an elastic connection relationship between the sliding rod 41 and the door panel 72. Specifically, the sliding rod 41 can be passed through the ear plate on the door panel 72, and springs can be provided on both sides of the ear plate, thus forming a form in which the sliding rod 41 is elastically connected to the door panel 72. Whether the floating beam 40 floats up or sinks down, it will be supported by the elastic spring, thereby indirectly sharing the force of the elastic expansion member 32 and improving the overall structural stability and service life.
[0035] To avoid excessive impact from the water flow on the floating beam 40, such as Figure 3 As shown, a guide slope 43 is provided on the upstream side of the floating beam 40. Since the water flow velocity passing through the bottom of the door panel 72 is high when the opening is small, the guide slope 43 is provided on the upstream side of the floating beam 40 to reduce the water flow impact force on the floating beam 40 and avoid the water flow impacting the floating beam 40 and affecting the stability of the door panel 72 in the small opening movement state.
[0036] As an optional implementation of the aforementioned driving component 20, please refer to Figure 1 and Figure 2 The drive assembly 20 includes a rotary drive component 21 and two sets of traction ropes 23. The rotary drive component 21 is fixedly connected to the downstream side of the door panel 72, and the output end of the rotary drive component 21 is connected to two sets of drums 22. The two sets of traction ropes 23 are respectively wound on the two sets of drums 22, and the winding directions are opposite. One set of traction ropes 23 is connected to the upstream side of the counterweight beam 10, and the other set of traction ropes 23 is connected to the downstream side of the counterweight beam 10.
[0037] Each set of traction ropes 23 can be two ropes connected to both sides of the counterweight beam 10, and each set of drums 22 is also configured as two coaxially connected to each traction rope 23. The rotary drive unit 21 can be a motor capable of forward and reverse rotation, and the rotary drive unit 21 is positioned at the top of the door panel 72 as much as possible to reduce its chance of contact with water.
[0038] When the rotary drive 21 rotates forward, it drives the two sets of drums 22 to rotate forward simultaneously. Since the winding directions of the two sets of traction ropes 23 are opposite, the traction rope 23 connected to the upstream side of the counterweight beam 10 is wound up, and the other set of traction ropes 23 is unwound, so that the counterweight beam 10 moves towards the door panel 72 under the traction of the traction rope 23 on its upstream side. When the rotary drive 21 rotates in reverse, the two sets of drums 22 rotate in reverse simultaneously. At this time, the traction rope 23 connected to the downstream side of the counterweight beam 10 begins to wind up, and the other set of traction ropes 23 begins to unwound, so that the counterweight beam 10 moves away from the door panel 72 under the traction of the traction rope 23 on its downstream side. The drive structure is simple and compact.
[0039] For some possible implementations, please refer to [link / reference]. Figure 1 and Figure 2 The drive assembly 20 also includes two sets of guide wheels 24; one set of guide wheels 24 is located on the gate body 70 and upstream of the counterweight beam 10, and is used to guide one set of traction ropes 23 to connect to the upstream side of the counterweight beam 10; the other set of guide wheels 24 is located on the gate body 70 and downstream of the counterweight beam 10, and is used to guide the other set of traction ropes 23 to connect to the downstream side of the counterweight beam 10. By setting two sets of guide wheels 24 on both sides of the counterweight beam 10 to guide the two sets of traction ropes 23 to connect on the upstream and downstream sides of the counterweight beam 10, it is ensured that the two sets of traction ropes 23 can pull the counterweight beam 10 in directions closer to and farther from the gate plate 72, respectively, thereby improving the stability of the counterweight beam 10's movement.
[0040] like Figure 2 As shown, to avoid excessive impact from water flow pulsations on the counterweight beam 10 and thus affecting the stability of the gate body 70, an inverted conical counterweight block 11 is provided at the bottom of the counterweight beam 10. The inverted conical structure of the counterweight block 11 enables the bottom surface of the counterweight beam 10 to form a conical surface, thereby preventing the pulsating water flow from directly impacting the counterweight beam 10 upwards; at the same time, it can also produce a certain cutting effect on the pulsating water flow, thereby dispersing the water waves and helping to reduce the impact force of the pulsating water flow.
[0041] In some embodiments, please refer to Figure 2The damping mechanism for the small opening of the channel gate also includes two slides 50, which are respectively connected to the side walls of the two swing arms 71 that are close to each other; the two ends of the counterweight beam 10 are respectively connected to the two slides 50 through sliding sleeves. By setting the slides 50 and the counterweight beam 10 to achieve sliding connection, the overall structure is simple and compact, and the smoothness of the movement of the counterweight beam 10 can be guaranteed.
[0042] For some possible implementation methods, please refer to [link / reference]. Figure 1 and Figure 2 A vibration sensor 60 is installed on the gate panel 72. The vibration sensor 60 is used to send vibration detection signals to the gate control system; the drive assembly 20 is controlled by the gate control system. Typically, the vibration sensor 60 used to detect gate vibration is a triaxial accelerometer, which can detect the vibration and acceleration of the gate in the X, Y, and Z directions. The data collected by the vibration sensor 60 forms a vibration detection signal, which is fed back to the gate control system via wired or wireless transmission. The gate control system evaluates the received vibration detection signal based on the existing safety evaluation index system, early warning database, and online monitoring database to determine whether the gate body 70 is resonating. This evaluation serves as the basis for controlling the start and stop of the drive assembly 20, ensuring the timely response of the gate resonance elimination action, thereby improving the safety and stability of the gate body 70 when operating at a small opening.
[0043] Of course, it should be noted that the signal transmission methods between the gate control system, vibration sensor 60 and drive assembly 20 and the gate control system can all adopt the methods in the prior art, which will not be described in detail here.
[0044] Based on the same inventive concept, combined with Figures 1 to 3 It is understood that this application embodiment also provides an arc-shaped gate, including the above-mentioned channel gate small opening operation damping mechanism.
[0045] Compared with the prior art, the arc-shaped gate provided in this embodiment adopts the above-mentioned channel gate small-opening operation damping mechanism, which can change the natural frequency of the gate body 70 by adjusting the position of the counterweight beam 10, thereby eliminating resonance; by using the damping plates 31 arranged at the bottom of the gate plate 72 to float up and down under the coupling action of the elastic expansion member 32 and the hydraulic jump impact force, the water flow pulsation caused by the hydraulic jump phenomenon is buffered, thereby reducing the vibration of the gate plate 72 caused by the hydraulic jump impact; from the above-mentioned damping and resonance elimination perspectives, the safety and stability of the gate body 70 during small-opening operation are improved together.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A damping mechanism for small-opening channel gates, characterized in that, include: The counterweight beam is slidably connected at both ends to the two swing arms on both sides of the gate body; A drive assembly is disposed on the gate plate of the gate body and connected to the counterweight beam, used to drive the counterweight beam closer to or further away from the gate plate to adjust the natural frequency of the gate body; Multiple damping components are distributed sequentially at intervals on the bottom of the downstream side of the door panel. Each damping component includes a damping plate and an elastic telescopic member. One end of the damping plate is hinged to the door panel, and the other end extends towards the downstream side of the door panel. The two ends of the elastic telescopic member are respectively hinged to the damping plate and the door panel, and are used to drive the damping plate to float up and down when subjected to the water jump impact.
2. The channel gate small opening operation damping mechanism as described in claim 1, characterized in that, It also includes a floating beam, which is slidably connected to the bottom of the downstream side of the door panel and located above the bottom waterstop of the door panel; each of the damping plates is hinged to the floating beam; When the gate body is opened to a small degree and a hydraulic jump occurs, the elastic telescopic member, in conjunction with the hydraulic jump impact, drives the damping plate to swing up and down and drives the floating beam to float up and down.
3. The channel gate small-opening operation damping mechanism as described in claim 2, characterized in that, The floating beam is provided with a number of sliding rods spaced apart along its axial direction. Each sliding rod is slidably connected to the door panel, and each sliding rod and the door panel are provided with an elastic element.
4. The channel gate small opening operation damping mechanism as described in claim 3, characterized in that, The upstream side of the floating beam is provided with a flow guiding slope.
5. The channel gate small-opening operation damping mechanism as described in claim 1, characterized in that, The driving component includes: A rotary drive unit is fixedly connected to the downstream side of the door panel, and the output end of the rotary drive unit is connected to two sets of drums; Two sets of traction ropes are wound on two sets of drums respectively, and the winding directions are opposite. One set of traction ropes is connected to the upstream side of the counterweight beam, and the other set of traction ropes is connected to the downstream side of the counterweight beam.
6. The channel gate small-opening operation damping mechanism as described in claim 5, characterized in that, The drive assembly further includes two sets of guide wheels; one set of guide wheels is located on the gate body and upstream of the counterweight beam, for guiding one set of traction ropes to connect to the upstream side of the counterweight beam; the other set of guide wheels is located on the gate body and downstream of the counterweight beam, for guiding the other set of traction ropes to connect to the downstream side of the counterweight beam.
7. The channel gate small-opening operation damping mechanism as described in claim 1, characterized in that, The bottom of the counterweight beam is provided with an inverted conical counterweight block.
8. The channel gate small-opening operation damping mechanism as described in claim 1, characterized in that, The channel gate's small opening operation damping mechanism also includes two slides, which are respectively connected to the side walls of the two swing arms that are close to each other; the two ends of the counterweight beam are respectively connected to the two slides through sliding sleeves.
9. The channel gate small-opening operation damping mechanism as described in any one of claims 1-8, characterized in that, The gate panel is equipped with a vibration sensor, which is used to send vibration detection signals to the gate control system; the drive component is controlled by the gate control system.
10. An arc-shaped gate, characterized in that, Includes the channel gate small opening operation damping mechanism as described in any one of claims 1-9.