Two-way water retaining string roller type table hole radial gate

Abstract

The application discloses a bidirectional water-stopping string-roller type radial gate for a gate hole, which comprises a civil foundation, a gate body and a hydraulic hoist, a plurality of torsion rod cantilever wheels are arranged on the gate body, the rollers of the torsion rod cantilever wheels are arranged on the two sides of the gate body, the rollers move along the arc track of the civil foundation, the hydraulic hoist oil cylinder hinge base is arranged on the civil foundation, the hydraulic hoist hanger head is hingedly connected to the gate body, and the gate body moves upwards or downwards under the drive of the hydraulic hoist when the gate is opened or fully closed. The application realizes dynamic adjustment of multiple pairs of rollers in the working process, can realize uniform loading of the multiple pairs of rollers under different load conditions and different track constraint conditions, solves the problem that the multiple pairs of rollers are difficult to be applied to the bidirectional water-stopping radial gate, and provides a novel gate which can be light in supporting structure, adapt to large load and bidirectionally stop water.

Description

Technical Field

[0001] This invention relates to the design of gates in water conservancy projects, and more specifically, to a roller-type arc gate that can block water in both directions. Background Technology

[0002] Arc-shaped gates are one of the most commonly used gate types in water conservancy and hydropower projects. They are characterized by strong load-bearing capacity, simple structure, small opening and closing force, and good water flow conditions, and are widely used in various hydraulic structures.

[0003] Traditional arc-shaped gates typically use a support arm and hinge as their support and travel mechanism. The reasonable range for the support arm length is generally 1.2 to 1.5 times the gate height; therefore, sluice gates using arc-shaped gates as their working gates are generally quite long. Analyzing the forces acting on a traditional arc-shaped gate, the force transmission process is as follows: water pressure acts on the gate panel, then converges at the base of the support arm through a crisscrossing beam system, then is concentrated and transmitted to the hinge, and finally from the hinge to the concrete foundation. In this process, the portion of the force transmitted from the support arm to the concrete is a very large concentrated load, requiring the construction of sufficiently strong support arms, hinges, and concrete foundations. Since the support arm is bolted to the main beam, and the hinge seat is bolted to the concrete foundation, both the connecting bolts and the concrete foundation bear enormous tensile forces when the gate is subjected to reverse water pressure. Therefore, arc-shaped gates often can only withstand large unidirectional loads and are difficult to simultaneously withstand large bidirectional loads.

[0004] While multiple pairs of rollers can distribute the load on a gate, they are difficult to use on curved gates. This is because traditional rollers are difficult to dynamically adjust during operation. Once the multiple pairs of rollers on a particular gate are installed, all roller axes are fixed, and there is no possibility of adjustment. When traditional, non-dynamically adjustable multiple pairs of rollers are applied to bidirectional, water-retaining curved gates, a gap must exist between the track and the rollers for installation and movement. This results in the rollers being partially detached from the inner track and partially subjected to extremely high loads.

[0005] Please see Figure 1 The diagram shows a comparison of roller operation in the forward and reverse water-blocking conditions when traditional multiple roller pairs are directly applied to an arc-shaped gate. In the diagram, A represents the traditional multiple rollers, B1 represents the inner track of the roller mounting rail, and B2 represents the outer track. According to the existing design, the inner and outer tracks are located on circles with the same center but different radii. Figure 1As shown in the left figure, under the forward water-blocking condition, the water level on the front of the gate is higher than the water level on the back, and the water pressure pushes the gate body towards the inner track B1. At this time, the front of the arc-shaped gate body is under force, and roller A is close to the inner track B1. The inner side of each roller of roller A is tangent to the inner track B1, while the outer side of roller A is not in contact with the outer track B2 due to installation and movement clearances. Thus, under the forward water-blocking condition, the arc-shaped gate using traditional rollers operates without problems. Please refer to [further details]. Figure 1 As shown in the right figure, under the reverse water-blocking condition, the water level on the front of the gate is lower than the water level on the back, and the water pressure pushes the gate body towards the inner track B2. At this time, because roller A cannot be dynamically adjusted, each roller cannot be completely in contact with the outer track B2, and most rollers are in a state of being detached. The only two pairs of rollers bear almost all the load.

[0006] In summary, traditional arc-shaped gates with multiple pairs of rollers can only block water in one direction and are difficult to block water in both directions. If traditional multi-pair rollers that cannot be dynamically adjusted are easily applied to arc-shaped gates that block water in both directions, it will result in gate jamming and roller damage at best, and structural failure and gate destruction at worst. Summary of the Invention

[0007] Due to the aforementioned problems in the existing technology, this application proposes a bidirectional water-blocking roller-type surface-hole arc gate. The purpose is to solve the serious problems caused by the direct application of multiple pairs of non-dynamically adjustable rollers to bidirectional water-blocking arc gates, such as gate jamming, roller damage, structural failure, and gate destruction. The application provides a new type of gate that can balance lightweight structure, adapt to large loads, and bidirectional water blocking.

[0008] The bidirectional water-blocking roller-type surface-hole arc gate includes: a civil engineering foundation, a gate body, and a hydraulic hoist. The gate body is equipped with several torsion bar cantilever wheels, and the rollers of the torsion bar cantilever wheels extend to both sides of the gate body. The rollers move along the arc-shaped track of the civil engineering foundation. The hydraulic hoist cylinder hinge seat is installed on the civil engineering foundation, and the hoist head is hinged to the gate body. When the gate is opened or fully closed, the gate body moves upward or downward under the drive of the hydraulic hoist.

[0009] Ideally, the civil engineering foundation has gate piers on both the left and right sides, with two pairs of inner and outer arc-shaped tracks on the gate piers. The treads of the inner and outer tracks face each other, and the lower ends of the inner and outer tracks are flush. The length of the outer track is half that of the inner track, and the outer track is fully open in sections where there is no corresponding inner track.

[0010] Preferably, the gate body includes a gate leaf structure and several torsion bar cantilever wheels, wherein: the panel of the gate leaf structure is arc-shaped; the axis of the transverse web of the gate leaf structure coincides with the radius of the arc-shaped panel, and the extension lines intersect at the center of the circle; the longitudinal webs of the gate leaf structure are parallel to each other, and a series of shaft holes for installing the torsion bar cantilever wheels are opened at corresponding positions; a pair of triangular lifting lugs for connecting with the hydraulic hoist are provided on one side of the flange near the upper position; the torsion bar cantilever wheels are installed in pairs on the left and right sides of the gate leaf structure, and the main axes of the wheel axles of each torsion bar cantilever wheel are parallel to each other. The center line of the connection between the wheel axle and the gate leaf structure is defined as the main axis, and all of them are the generatrix of a virtual cylindrical surface with the arc-shaped center of the panel of the gate leaf structure as the axis.

[0011] Preferably, the torsion bar cantilever wheel includes an axle, a torsion bar, and a roller, wherein:

[0012] The axle is supported by two bearings on the two outermost longitudinal webs of the gate leaf structure. The axle has two parallel axes: a primary axis and a secondary axis. The centerline of the connection between the axle and the roller is defined as the secondary axis. The primary axis and the centerline of the torsion bar are collinear, as are the centerlines of the secondary axis and the roller. The torsion bar is fixed at one end to one longitudinal web of the gate leaf structure via a flange, and at the other end to the tail end of the axle via a spline. The torsion bar passes through the remaining longitudinal webs of the gate leaf structure without interfering with them. The centerline of the torsion bar is collinear with the primary axis of the axle. The roller is connected to the head end of the axle via a bearing. After installation, the roller is exposed on the outer side of the gate leaf structure. When the gate body is subjected to positive or reverse water pressure, the torsion bar is elastically torn by torsion, which in turn drives the axle to rotate, and subsequently drives the roller to move dynamically. The dynamic movement of the roller refers to the circular movement of the roller with the primary axis of the outer axle as the center and the distance between the primary and secondary axes as the radius.

[0013] Preferably, the multiple pairs of torsion bar cantilever wheels installed on the same gate body are installed symmetrically on the left and right or staggered on the left and right.

[0014] Ideally, when the gate is fully open, the gate body lies flat above the orifice and is not obstructed by the track.

[0015] By adopting the above technical solution, this application successfully eliminates the support arms and hinges of traditional arc-shaped gates, distributing the load to the concrete foundation through rollers and tracks. Simultaneously, this application achieves dynamic adjustment of multiple pairs of rollers during operation, ensuring uniform load-bearing under different load conditions and track constraints. This solves the problem of the difficulty in applying multiple pairs of rollers to bidirectional water-blocking arc-shaped gates, providing a novel gate that balances lightweight support structure, adaptability to large loads, and bidirectional water-blocking capability.

[0016] Meanwhile, when this application is used in engineering examples, its specific design is no longer limited by the position of the hinges, and the values ​​of detailed design parameters such as panel curvature, arc center height, and hoist arrangement are more flexible, making its application range wider than that of traditional gates; compared with traditional planar gates, this application facilitates the inspection and maintenance of the gate and reduces the engineering operation cost; compared with traditional arc gates, this application reduces the amount of steel and concrete used, thus reducing the engineering construction cost. Attached Figure Description

[0017] Figure 1 This is a comparison diagram of the roller operation when traditional multiple pairs of rollers are directly applied to an arc-shaped gate, showing the operation of the rollers in the forward and reverse water-blocking conditions.

[0018] Figure 2 An isometric view of a bidirectional water-blocking roller-type surface-hole arc gate in its closed state;

[0019] Figure 3 An isometric view of an embodiment of a bidirectional water-blocking roller-type surface-hole arc gate in its open state;

[0020] Figure 4 A longitudinal sectional view of a closed state of an embodiment of a bidirectional water-blocking roller-type surface-hole arc gate;

[0021] Figure 5 A longitudinal sectional view of an embodiment of a bidirectional water-blocking roller-type surface-hole arc gate in its open state;

[0022] Figure 6 An isometric view of the gate body of an embodiment of a bidirectional water-blocking roller-type surface-hole arc gate;

[0023] Figure 7 An axonometric sectional view of a torsion bar cantilever wheel, representing an embodiment of a bidirectional water-blocking roller-type surface-hole arc gate;

[0024] Figure 8 A half-sectional view of a torsion bar cantilever wheel, representing an embodiment of a bidirectional water-blocking roller-type surface-hole arc gate;

[0025] Figure 9A and Figure 9B A simplified analysis diagram of the symmetrical and staggered installation methods of the torsion bar cantilever wheel for a bidirectional water-blocking roller-type surface-hole arc gate;

[0026] Figure 10 A simplified comparative analysis of the operation of a traditional roller mechanism and the torsion bar cantilever wheel mechanism of this application;

[0027] Figure 11 A simplified comparative analysis of an arc gate using a traditional roller mechanism and an arc gate using the torsion bar cantilever wheel of this application as a support and travel mechanism on a concentric arc track.

[0028] Figure 12 A simplified comparative analysis of an arc-shaped gate using a traditional roller mechanism and one using the torsion bar cantilever wheel of this application as a support and travel mechanism on a non-concentric arc track.

[0029] Figure 13 To draw a graph showing the relationship between displacement and load based on the formula. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0031] The project requires the construction of a sluice gate near the estuary of a river in a coastal area to control the river. Affected by sea tides, the sluice gate may experience both a positive water-blocking condition (where the external water level is higher than the internal water level) and a reverse water-blocking condition (where the internal water level is higher than the external water level), with significant water level differences and high water pressure loads. This invention is used as the working gate of the sluice gate in this project.

[0032] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the bidirectional water-blocking roller type surface orifice arc gate of this embodiment includes: a civil engineering foundation 1, a gate body 2, and a hydraulic hoist 3.

[0033] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, several sets of rollers are provided on both sides of the gate body 2, which are engaged in the arc-shaped track along the civil engineering foundation 1, allowing the gate body 2 to move up and down along the arc-shaped track. One end of the hydraulic hoist 3 is located on the hoist foundation hinged to the civil engineering foundation 1, and the other end is hinged to the gate body 2. The hydraulic hoist 3 drives the gate body 2 to move up or down.

[0034] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the civil engineering foundation 1 in this embodiment is U-shaped, with a sluice gate base plate at the bottom and sluice gate piers on the left and right sides. Two pairs of inner and outer arc-shaped tracks are symmetrically embedded on the piers, and hoist foundations are symmetrically installed on the piers. The treads of the inner and outer tracks face each other, and their starting points are at the bottom of the piers. The inner track is approximately half a circle, and the outer track is approximately a quarter circle. The outer track is completely open in sections where there is no corresponding inner track.

[0035] Please see Figure 6 As shown, the gate body 2 of this embodiment includes a gate leaf structure 21 and several pairs of torsion bar cantilever wheels 22 mounted thereon.

[0036] Please see Figure 6 As shown, the gate leaf structure 21 adopts a solid-web main beam structure, with the transverse and longitudinal main beams connected at the same height. One side of its panel is curved, and the other side of the flange is straight. The axis of the transverse web 211 coincides with the radius of the curved panel, and their extensions intersect at the center. The longitudinal webs 212 are parallel to each other, and a series of shaft holes for mounting the torsion bar cantilever wheel 22 are opened at corresponding positions. In addition to the structure for blocking water and transmitting loads, a pair of triangular lifting lugs are provided on the upper part of one side of the flange for connecting to the hydraulic gate hoist 3.

[0037] Please see Figure 6 As shown, the torsion bar cantilever wheels 22 are installed in pairs on the left and right sides of the gate leaf structure 21. The main axes of all wheel axles 221 are parallel to each other. The center line of the connection between the wheel axle and the gate leaf structure is defined as the main axis, and all of them are the generatrices of a virtual cylindrical surface with the center of the arc-shaped circle of the gate leaf structure 21 as the axis. In this embodiment, one gate body 2 includes 14 torsion bar cantilever wheels 22 (but is not limited to this number of cantilever wheel mechanisms), and the torsion bar cantilever wheels 22 are symmetrically distributed in pairs on the left and right sides of the gate body.

[0038] Please see Figure 7 and Figure 8 As shown, the torsion bar cantilever wheel 22 includes a wheel axle 221, a torsion bar 222, and a roller 223.

[0039] Please see Figure 7 and Figure 8 As shown, the axle 221 has two parallel axes: the main axis 2211 and the secondary axis 2212. The centerline of the connection between the axle and the roller is defined as the secondary axis 2212. The centerline of the main axis 2211 and the torsion bar 222 are collinear, and the centerline of the secondary axis 2212 and the roller 223 are collinear. The distance between the two axes is called the eccentricity e. The specific value of e is determined in the specific design and is mainly related to the width and height of the sluice gate opening, the radius of the inner and outer tracks, the roller movement clearance, and the manufacturing and installation deviation data of the gate body and the tracks. In this embodiment, the eccentricity is 15mm; under normal circumstances where this invention is applicable, the eccentricity is generally between 5mm and 50mm.

[0040] Please see Figure 7 and Figure 8 As shown, the axle 221 is supported by two bearings on the two outermost longitudinal webs of the door leaf structure 21. The bearings serve to support the axle, restrict its degrees of freedom, and reduce rotational friction.

[0041] Please see Figure 7 and Figure 8As shown, the torsion bar 222 has one end fixed to a longitudinal web in the middle of the door leaf structure 21 via a flange, and the other end fixed to the tail end of the wheel axle 221 via a spline; the torsion bar 222 passes through the remaining longitudinal webs of the door leaf structure 21 and does not interfere with each other, and the center line of the torsion bar is on the same straight line as the main axis of the wheel axle 221.

[0042] Please see Figure 7 and Figure 8 As shown, roller 223 is connected to the head end of axle 221 by a bearing and has an end plate to prevent it from slipping; after installation, roller 223 is exposed on the outside of the door leaf structure 21.

[0043] Please see Figure 6 , Figure 9A and Figure 9B As shown, the torsion bar cantilever wheels 22 are installed in pairs on the left and right sides of the door leaf structure 21, but this does not mean that their positions need to be completely symmetrical. When the number of torsion bar cantilever wheels 22 is the same on both the left and right sides, and they are symmetrically distributed on both sides of the door body, this is called a symmetrical arrangement. When the number of torsion bar cantilever wheels 22 is the same on both the left and right sides, and they are distributed on both sides of the door body with their axes offset from each other, this is called a staggered arrangement. Both symmetrical and staggered arrangements fall within the scope of this invention and can achieve the dynamic adjustment purpose of this application.

[0044] Please see Figure 2 and Figure 4 As shown, when the gate of this application is fully closed, the water pressure load is transmitted sequentially through the gate leaf structure, rollers, and track, ultimately reaching the concrete foundation. Throughout this process, the concrete structure remains under compression regardless of whether the load is positive or negative. In contrast, traditional arc-shaped gates use support arms and hinges as force transmission structures. Under positive loads, the support arms and concrete foundation are under compression, and under negative loads, they are under tension. Compared to traditional arc-shaped gate structures, the force structure of this invention is more rational when blocking water in the opposite direction. Furthermore, the combination of rollers, track, and concrete foundation requires less engineering work than the combination of support arms, hinges, and concrete, reducing construction costs. In addition, the structure of this invention does not have compression or tension rods during force transmission, while traditional arc-shaped gates inevitably have compression and tension rods, requiring consideration of the stability of the support arms both in and out of plane, making the design relatively simpler.

[0045] Please see Figure 3 and Figure 5 As shown, when the gate of this application is in the fully open state, the gate body 2 lies flat above the orifice, allowing water to flow freely in both directions. Simultaneously, this position facilitates rust removal, painting, and parts replacement without requiring time or resources to cut off the water flow. This makes gate maintenance and repair more convenient, reduces the sluice gate's operation and maintenance costs, and decreases the intensity of manual labor.

[0046] Compared with the traditional arc gate arrangement, this application eliminates the support arm and hinge, and adopts rollers and rails. The gate arrangement is no longer limited by the position of the hinge. When designing the gate, the design parameters such as the curvature of the panel, the height of the arc center, and the arrangement of the hoist are more flexible, which is more conducive to design optimization and expands the range of working conditions that the gate can adapt to.

[0047] The working principle of this invention is explained as follows:

[0048] In this application, the two axes of the axle 221 are offset to a certain extent. When the roller 223 is under load, in addition to the bending moment on the axle 221, it also generates an additional torque. This torque is transmitted to the torsion bar 222, causing the torsion bar 222 to elastically twist, thereby driving the roller 223 to rotate around the main axis of the axle 221. According to physical laws such as Hooke's law, the relationship between the deflection displacement and the roller load can be established, thus enabling quantitative analysis.

[0049] If a gate uses multiple pairs of torsion bar cantilever wheels 22 as its support and travel mechanism, each group of mechanisms will be subjected to loads and undergo displacement as described above. When the load on the gate is close to ideal with respect to the track conditions, each group of mechanisms will be subjected to the same load and undergo the same displacement; when the load on the gate and the track conditions are uneven due to various real-world conditions, each group of mechanisms will be subjected to different loads and undergo different displacements.

[0050] When designing a gate, by controlling the relationship between the deflection displacement of each group of mechanisms and the roller load, it can be ensured that each group of bearing mechanisms can bear the load when the gate is subjected to load, thus avoiding the detachment of any group of bearing mechanisms.

[0051] The approximate calculation formula for the force-displacement relationship of a single mechanism in this invention is derived as follows:

[0052]

[0053] In the formula: F — the load-bearing capacity of the mechanism;

[0054] f—relative displacement;

[0055] θ—the angle of elastic deformation of the torsion bar, in radians;

[0056] G—Shear modulus of the torsion bar material;

[0057] I—Moment of inertia of the torsion bar section;

[0058] l — the calculated length of the torsion bar;

[0059] r — radius of the roller motion curve.

[0060] The displacement f versus load F graph can be plotted according to the formula, as shown below. Figure 13 The horizontal axis represents displacement f, and the vertical axis represents load F. The dimensions of the two physical quantities in the image are relative dimensions with a unit of 1.

[0061] like Figure 13 According to the image, the torsion bar cantilever wheel 22 exhibits good linear elasticity within 80% of its full load. During design, the average design load of the gate support mechanism can be taken as 40%–60%, and the limit for uneven loads can be taken as 80%–90%.

[0062] The principle of installing the torsion bar cantilever wheel 22 mechanism on the gate is explained below.

[0063] Please see Figure 10 The diagram shown is a simplified comparative analysis of the operation of a traditional roller mechanism and the torsion bar cantilever wheel 22 mechanism of this application. A traditional roller is rigidly connected directly to the door body and does not undergo relative displacement when subjected to load; while the torsion bar cantilever wheel of this application elastically connects the roller to the door body and undergoes relative displacement when subjected to load.

[0064] Please see Figure 11 and Figure 12 As shown, when multiple pairs of torsion bar cantilever wheels 22 are installed on a door body, each pair of rollers can produce a certain displacement, thereby conforming to the not completely corresponding track, so that all rollers can bear the load.

[0065] Please see Figure 11 As shown, a conventional arc-shaped door using rollers travels on a concentric arc-shaped track, allowing each roller to bear the load; similarly, an arc-shaped door using the torsion bar cantilever wheel 22 of this application travels on a concentric arc-shaped track, allowing each roller to bear the load.

[0066] Please see Figure 12 As shown, when a conventional arc-shaped door with rollers travels on a non-centered arc-shaped track, only two sets of rollers can bear the load, while the rest of the rollers are detached; however, when an arc-shaped door with the torsion bar cantilever wheel 22 of this application travels on a centered arc-shaped track, each roller can still bear the load.

[0067] When the gate body 2 is subjected to positive or reverse water pressure, the torsion bar 222 is elastically twisted by the torsion force, which in turn drives the wheel axle 221 to rotate, and then drives the roller 223 to move dynamically. The dynamic movement of the roller 223 refers to the circular movement of the roller 223 with the main axis of the outer wheel axle 221 as the center and the axial distance between the main axis and the secondary axis as the radius.

[0068] In engineering practice, the radii of the inner and outer tracks of a gate differ by a movement installation clearance in addition to the roller radius. If multiple pairs of rollers of the gate are aligned with one pair of tracks, they will inevitably be misaligned with another pair of tracks. A conventional arc-shaped gate using rollers can bear weight on all rollers in the forward direction, but most rollers cannot bear weight in the reverse direction, thus it can only adapt to forward working conditions and cannot adapt to reverse working conditions. An arc-shaped gate using the torsion bar cantilever wheel 22 of this application can bear weight on all rollers in the forward direction, and all rollers can still bear weight in the reverse direction, thus it can adapt to both forward and reverse working conditions simultaneously.

[0069] The embodiments described above are for illustrative purposes only and are not intended to limit the scope of the invention. All equivalent changes and modifications made to the invention by those skilled in the art should fall within the scope of the appended claims.

Claims

1. A bidirectional water-blocking roller-type surface orifice arc gate, comprising: The invention comprises a civil engineering foundation, a gate body, and a hydraulic hoist, characterized in that the gate body is provided with a plurality of torsion bar cantilever wheels, and the rollers of the torsion bar cantilever wheels extend to both sides of the gate body. The plurality of rollers move along the arc-shaped track of the civil engineering foundation. The hydraulic hoist cylinder hinge seat is installed on the civil engineering foundation. The hoist head is hinged to the gate body. When the gate is opened or fully closed, the gate body moves upward or downward under the drive of the hydraulic hoist. The gate body includes a gate leaf structure and several torsion bar cantilever wheels, wherein: The panel of the gate leaf structure is arc-shaped; the axis of the transverse web of the gate leaf structure coincides with the radius of the arc, and the extension lines intersect at the center of the circle; the longitudinal webs of the gate leaf structure are parallel to each other, and a series of shaft holes for installing the torsion bar cantilever wheel are opened at corresponding positions; a pair of triangular lifting lugs for connecting with the hydraulic gate hoist are provided on one side of the upper position. The torsion bar cantilever wheels are installed in pairs on the left and right sides of the door leaf structure. The main axes of the wheel axles of each torsion bar cantilever wheel are parallel to each other. The center line of the connection between the wheel axle and the door leaf structure is defined as the main axis, and both are the generatrix of a virtual cylindrical surface with the center of the arc-shaped circle of the door leaf structure panel as the axis. The torsion bar cantilever wheel includes the wheel axle, torsion bar, and roller, wherein: The axle is supported by two bearings on the two outermost longitudinal webs of the door leaf structure; the axle has two parallel axes, the main axis and the secondary axis, and the center line of the connection between the axle and the roller is defined as the secondary axis. The main axis is on the same straight line as the center line of the torsion bar, and the secondary axis is on the same straight line as the center line of the roller. The torsion bar has one end fixed to a longitudinal web of the door leaf structure via a flange, and the other end fixed to the tail end of the wheel axle via a spline; the torsion bar passes through the remaining longitudinal webs of the door leaf structure without interfering with each other; the centerline of the torsion bar is on the same straight line as the main axis of the wheel axle. The roller is connected to the head end of the axle via a bearing; the roller is exposed on the outside of the door leaf structure after installation. When the gate body is subjected to positive or reverse water pressure, the torsion bar is elastically twisted by the torsion force, which in turn drives the wheel axle to rotate, and then drives the roller to move dynamically; the dynamic movement of the roller refers to the circular movement of the roller with the main axis as the center and the axial distance between the main axis and the secondary axis as the radius.

2. The bidirectional water-blocking roller-type surface-hole arc gate according to claim 1, characterized in that: Gate piers are erected on the left and right sides of the civil engineering foundation. Arc-shaped inner and outer tracks are embedded on the gate piers. The treads of the inner and outer tracks are opposite each other, and the lower ends of the inner and outer tracks are flush. The length of the outer track is half that of the inner track, and the outer track is fully open in sections of road where there is no corresponding inner track.

3. The bidirectional water-blocking roller-type surface-hole arc gate according to claim 1, characterized in that: The multiple pairs of torsion bar cantilever wheels installed on the same gate body are either symmetrically installed on the left and right or staggered on the left and right.

4. The bidirectional water-blocking roller-type surface-hole arc gate according to claim 1, characterized in that: When the gate is fully open, the gate body lies flat above the opening and is not obstructed by the track.

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