Novel folding triangular door

Abstract

The invention relates to the technical field of water conservancy projects, and discloses a novel folding triangular door. According to the novel folding type triangular door, the arc-shaped door leaf is designed to be of a foldable structure with the middle door leaf section and the side door leaf sections, the arc-shaped door leaf is matched with a special door chamber for storage, when the door body is in a storage state, the side door leaf sections are folded towards the middle door leaf section, and the overall size is obviously reduced; two large gate reservoirs originally needing to be arranged on the two banks can be simplified into the gate reservoirs with smaller sizes, it is ensured that the gate bodies can obtain enough structural strength and water retaining area through unfolding during water retaining, folding action can be efficiently and reliably completed during storage, space occupation of the gate body structure is reduced, occupied land of the river banks is reduced, and the water retaining effect of the gate bodies is improved. Therefore, the gate can be applied to scenes which are not allowed to be constructed, such as narrow spaces on two banks or an ecological sensitive area and a residential area on one side, and the site selection adaptability and the popularization and application potential of the gate in urban construction are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic engineering, in particular to a novel folding triangular gate. BACKGROUND

[0002] In hydraulic engineering, in order to realize the scheduling operation of water flow and water quantity, an opening with a movable gate body is usually arranged in the body structure of the building. Among them, the triangular gate (also known as the planar double-opening arc-shaped gate) is a common hydraulic steel gate, which is applied because of its novel structure form and good landscape characteristics. The gate utilizes its hydraulic characteristics for opening and closing, reduces the special opening and closing equipment, and is parked in the gate house on both banks in the open state, does not hinder the natural characteristics of the waterway, and is convenient for detection and maintenance, which has obvious advantages.

[0003] The traditional triangular gate is usually composed of two arc-shaped gates that can be horizontally rotated into the river. Each arc gate structure mainly includes a gate body, a support arm and a support hinge. When retaining water, the external load acting on the gate body is transmitted to the support hinge through the support arm, and is finally borne by the foundation. The gate is seated on the riverbed sill to retain water when closed, and is stored in the gate house on both banks when opened.

[0004] However, the planar size of the gate body is large and needs to be matched with the construction of the gate house on both banks, resulting in an excessively large overall land occupation. The city construction land is tight, needs to avoid ecological sensitive areas and residential areas, which greatly limits the site adaptability and popularization and application. SUMMARY

[0005] The present application provides a novel folding triangular gate to solve the problem of limited application of the traditional triangular gate due to excessively large land occupation.

[0006] The novel folding triangular gate provided by the present application includes a gate body structure, a main opening and closing device, and a gate house. The gate body structure includes an arc-shaped gate leaf and a folding driving device. The arc-shaped gate leaf includes a middle gate leaf segment and at least one side gate leaf segment arranged in sequence in the tangential direction of the gate leaf. The middle gate leaf segment and the side gate leaf segment are connected by a hinge mechanism. The side gate leaf segment can rotate relative to the middle gate leaf segment. The gate body structure has a water retaining state in which the side gate leaf segment is unfolded, and a storage state in which the side gate leaf segment is folded towards the middle gate leaf segment. The folding driving device acts on the side gate leaf segment to drive it to switch between the water retaining state and the storage state around the hinge mechanism. The main opening and closing device drives the gate body structure to rotate around the vertical axis to open or close the river. The gate house is used to accommodate the gate body structure in the storage state.

[0007] Beneficial effects: By designing the arc-shaped door leaf as a foldable structure with a middle door leaf section and side door leaf sections, and cooperating with a special door library, when the door body is in the storage state, the side door leaf sections are folded towards the middle door leaf section, the overall volume is significantly reduced, so that the two large door libraries originally needed to be set on both banks can be simplified as smaller door libraries, ensuring that the door body can obtain sufficient structural strength and water blocking area by unfolding when blocking water, and can efficiently and reliably complete the folding action when stored, reducing the space occupation of the door body structure, thereby reducing the occupation of the river bank land, so that the gate can be applied to scenes where the space between the two banks is narrow, or one side is an ecological sensitive area, residential area, etc. not allowed to be built, significantly improving the site adaptability and potential for popularization and application in urban construction.

[0008] In an optional embodiment, the new foldable triangular door further comprises a hinge mounting platform and a support arm, and the support arm is mounted on the hinge mounting platform through a gate hinge.

[0009] In an optional embodiment, the folding driving device comprises a folding assembly. The folding assembly comprises a first folding rod and a second folding rod, one end of one of the first folding rod and the second folding rod along the length thereof is hinged to the support arm, the other end of one of the first folding rod and the second folding rod along the length thereof is hinged to one end of the other of the first folding rod and the second folding rod along the length thereof, and the other end of the other of the first folding rod and the second folding rod along the length thereof is hinged to the side door leaf section.

[0010] In an optional embodiment, the folding driving device further comprises a linear drive. The output end of the linear drive is hinged to the other end of one of the first folding rod and the second folding rod along the length thereof, and the linear drive is configured to have an unlocked state and a locked state. When the linear drive is in the unlocked state, the relative rotation of the first folding rod and the second folding rod is driven by the linear displacement of the output end of the linear drive, and when the linear drive is in the locked state, the output end thereof remains fixed in position, so that the first folding rod, the second folding rod and the middle door leaf section remain locked in position.

[0011] In an optional embodiment, the linear drive is a hydraulic drive, which comprises a cylinder, a piston and a piston rod. The cylinder forms an accommodation chamber inside, the piston is slidably arranged in the accommodation chamber and divides the accommodation chamber into a first chamber and a second chamber, one end of the piston rod along the length thereof is connected to the piston, and the other end thereof extends out of the cylinder and is hinged to the other end of one of the first folding rod and the second folding rod along the length thereof.

[0012] In an alternative embodiment, the first folding rod is provided with a first connecting body, the first connecting body is provided with a first limiting slope surface; the second folding rod is provided with a second connecting body, the second connecting body is provided with a second limiting slope surface, the second limiting slope surface is a counter surface of the first limiting slope surface; the folding assembly has an extended state, when the folding assembly is in the extended state, the first limiting slope surface abuts against the second limiting slope surface.

[0013] In an alternative embodiment, the inner side of the rotating connection between the intermediate door leaf segment and the side door leaf segment is provided with a third limiting slope surface and a fourth limiting slope surface which are matched with each other; when the door body structure is in the storage state, the third limiting slope surface abuts against the fourth limiting slope surface to limit the excessive rotation between the side door leaf segment and the intermediate door leaf segment.

[0014] In an alternative embodiment, the outer side of the rotating connection between the intermediate door leaf segment and the side door leaf segment is provided with a fifth limiting slope surface and a sixth limiting slope surface which are matched with each other; when the door body structure is in the water blocking state, the fifth limiting slope surface abuts against the sixth limiting slope surface to limit the excessive rotation between the side door leaf segment and the intermediate door leaf segment.

[0015] In an alternative embodiment, the support arm is a frame type force bearing structure, which comprises a plurality of main force bearing members extending along the length direction of the support arm and connecting members connected between the main force bearing members.

[0016] In an alternative embodiment, the gate support hinge comprises a rotating component arranged at the end of the support arm and a supporting component arranged on the support hinge mounting platform, the rotating component and the supporting component are connected through a rotating hinge mechanism, so that the support arm can rotate relative to the support hinge mounting platform. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings needed in the description of the specific embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 The top view structural schematic diagram of the novel folding triangular door provided by the embodiment of the present application in the water blocking state and the storage state respectively; Figure 2 The top view structural schematic diagram of the door body structure of the novel folding triangular door provided by the embodiment of the present application in the storage state; Figure 3 The top view structural schematic diagram of the door body structure of the novel folding triangular door provided by the embodiment of the present application in the storage state; Figure 2A magnified view of part A in the diagram; Figure 4 for Figure 3 A magnified view of part B in the diagram; Figure 5 for Figure 3 A magnified view of part of C; Figure 6 for Figure 2 A magnified view of part of D; Figure 7 A top view of the novel folding triangular gate in the water-blocking state provided in an embodiment of the present invention. Figure 8 for Figure 7 A magnified view of part of E in the diagram; Figure 9 A top view of the novel folding triangular door provided in an embodiment of the present invention, showing the door structure completely housed within the door storage compartment. Figure 10 A top view of the novel folding triangular door structure partially housed within the door storage compartment, as provided in an embodiment of the present invention. Figure 11 A top view of the novel folding triangular door structure partially unfolded within the door storage according to an embodiment of the present invention. Figure 12 This is a top view of the novel folding triangular gate structure provided in an embodiment of the present invention, with the gate body fully unfolded within the river channel.

[0019] Explanation of reference numerals in the attached figures: 1. Curved door leaf; 11. Middle door leaf section; 111. Third limiting slope; 112. Fifth limiting slope; 12. Side door leaf section; 121. Fourth limiting slope; 122. Sixth limiting slope; 13. Hinge support; 14. Hinge mounting protrusion; 2. Folding drive device; 21. First folding rod; 211. First connecting body; 212. First limiting slope; 22. Second folding rod; 221. Second connecting body; 222. Second limiting slope; 23. Hydraulic drive component; 231. Cylinder; 232. Piston rod; 3. Main opening and closing equipment; 4. Doorway / Storehouse; 5. Hinged mounting platform; 6. Support arm; 611. Main load-bearing component; 612. Connecting component; 613. Connecting rod; 7. Gate hinges. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In water conservancy projects, to achieve the scheduling and operation of water flow and volume, openings with movable gates are usually installed in the main structure of the structure. Among them, the triangular gate (also known as a planar double-opening arc gate) is a common type of hydraulic steel gate, which is used because of its novel structural form and its ability to create a good landscape feature. This gate uses its hydraulic characteristics to open and close, reducing the need for special opening and closing equipment. When open, it is moored in the gate reservoir on both banks, without obstructing the natural features of the waterway, and is easy to inspect and maintain, which has significant advantages.

[0022] Traditional triangular gates typically consist of two horizontally rotating arc-shaped gates that can rotate into the river channel. Each arc-shaped gate structure mainly comprises three parts: the gate body, the support arm, and the hinge. When impounding water, the external load acting on the gate body is transferred to the hinge through the support arm and ultimately borne by the foundation. When closed, the gate rests on the riverbed sill to impound water; when open, it is housed in gate reservoirs on either side of the riverbank.

[0023] However, its large gate size and the need to build gatehouses on both sides result in an excessively large overall land area. The scarcity of urban construction land and the need to avoid ecologically sensitive areas and residential areas will greatly limit its site selection adaptability and promotion.

[0024] Therefore, the present invention divides the gate into multiple sections, which unfold when the gate is in water-blocking mode and fold when the gate enters the gate storage, thereby effectively reducing the footprint of the gate storage and reducing the land area required for the project.

[0025] The following is combined with Figures 1 to 12 The following describes embodiments of the present invention.

[0026] According to embodiments of the present invention, a novel folding triangular door is provided, such as... Figure 1 As shown, it includes the door structure, the main opening and closing device 3, and the door storage 4.

[0027] It can be explained that the gate structure is narrow at the top and wide at the bottom in longitudinal section. The solid web is arranged along the height direction, forming a closed floating box structure with the arc panels set on the upstream and downstream sides. Baffles are set along the radial and tangential directions to divide the gate into different cavities such as fixed ballast tank, equipment tank, and floating body regulating water tank.

[0028] Furthermore, the bottom compartment of the gate leaf is a floating regulating water tank, and the upward and downward movement of the gate is controlled by controlling the amount of water filling the tank.

[0029] Similarly, a fixed ballast tank is set in the middle layer of the door leaf, and an equipment compartment is set in the independent enclosed space on the upper layer of the door leaf for installing filling and drainage equipment, hydraulic pump station, electrical cabinet, etc. The top of the equipment compartment is equipped with a hoisting hole and an access hole, and is also equipped with ventilation pipes.

[0030] In one embodiment, such as Figures 1 to 3 As shown, the gate structure includes an arc-shaped gate leaf 1 and a folding drive device 2. The arc-shaped gate leaf 1 includes a middle gate leaf segment 11 and at least one side gate leaf segment 12 arranged sequentially in the tangential direction of the gate leaf. The middle gate leaf segment 11 and the side gate leaf segment 12 are connected by a hinge mechanism. The side gate leaf segment 12 can rotate relative to the middle gate leaf segment 11. The gate structure has a water-blocking state in which the side gate leaf segment 12 is unfolded, and a storage state in which the side gate leaf segment 12 is folded towards the middle gate leaf segment 11. The folding drive device 2 acts on the side gate leaf segment 12 to drive it to switch between the water-blocking state and the storage state around the hinge mechanism. The main opening and closing device 3 drives the gate structure to rotate around the vertical axis to open or close the river channel. The gate storage 4 is used to accommodate the gate structure in the storage state.

[0031] This design, by incorporating a foldable structure with a central door leaf segment 11 and side door leaf segments 12, and using a dedicated gate housing 4 for storage, allows the side door leaf segments 12 to fold towards the central door leaf segment 11 when the gate is in its retracted state, significantly reducing the overall volume. This simplifies the original requirement of having two large gate housings 4 on both banks into a smaller one, ensuring that the gate can achieve sufficient structural strength and water-blocking area when unfolded, and efficiently and reliably fold when retracted, thus reducing the space occupied by the gate structure and consequently reducing the land occupation on the riverbank. This allows the gate to be applied in scenarios where the space on both banks is narrow, or where one side is an ecologically sensitive area or residential area where construction is not permitted, significantly enhancing its site selection adaptability and application potential in urban construction.

[0032] Preferably, the side door leaf segments 12 are arranged in pairs and are respectively arranged on both sides of the middle door leaf segment 11.

[0033] It can be explained that the main gate opening and closing device 3 adopts a traditional gear-driven gate opening and closing mechanism, including a pier, a bearing rod, a connecting frame, a housing, a hydraulic motor, a drive gear, a driven gear or rack, a drive bracket, guide wheels, and rollers. During installation, the bearing rod is connected to the pier via a sliding joint, and the connecting frame is connected to the bearing rod via a revolute joint. The drive gear is located at the bottom of the housing and meshes with the driven gear. The driven gear or rack is fixed to the top of the gate, and the guide wheels are located below the drive gear and on both sides of the driven gear or rack. A hydraulic motor drives the gear meshing motion pair to realize the opening and closing of the gate.

[0034] Furthermore, the main gate opening and closing device 3 is equipped with a backup gate opening and closing machine.

[0035] In one embodiment, such as Figures 1 to 12 As shown, the new folding triangular gate also includes a hinge mounting platform 5 and a support arm 6, with the support arm 6 mounted on the hinge mounting platform 5 via a gate hinge 7.

[0036] This design, with the hinge mounting platform 5 and the support arm 6, and the support arm 6 mounted on the hinge mounting platform 5 via the gate hinge 7, ensures that the gate body has a stable and reliable support point during opening and closing. The water load acting on the arc-shaped gate leaf 1 can be directly transferred to the hinge through the efficient bending-resistant component of the support arm 6, and ultimately borne by the robust hinge mounting platform 5 and the foundation, forming a force flow path and ensuring the rigidity and stability of the arc-shaped gate leaf 1 when blocking water.

[0037] In one embodiment, such as Figures 1 to 4 , Figure 7 and Figure 8 As shown, the folding drive device 2 includes a folding assembly. The folding assembly includes a first folding rod 21 and a second folding rod 22. One end of the first folding rod 21 and the second folding rod 22 along its length is used to hinge to the support arm 6, and the other end of the first folding rod 21 along its length is used to hinge to the other end of the second folding rod 22 along its length. The other end of the second folding rod 22 along its length is hinged to the side door leaf section 12.

[0038] This configuration, by hinged to the first folding rod 21 and the second folding rod 22, allows the side door leaf segment 12 to be tightly folded along the tangential direction of the middle door leaf segment 11, forming a compact stacked structure. In the retracted state, the side door leaf segment 12 rotates around the hinge point toward the middle door leaf segment 11, thereby shortening the overall width. When arranged, compared to the traditional triangular door requiring a large door frame 4 to accommodate the unfolded door body, the folding drive device 2 of this invention reduces the volume of the door structure in the retracted state, thereby reducing the size requirement of the door frame 4. This allows the new folding triangular door to eliminate the need for a large door frame 4, requiring only a small door frame 4 to meet the storage needs. This provides a practical solution for the implementation of urban river engineering under limited land conditions, effectively solving the core problem of limited site adaptability due to excessive land area.

[0039] It should be noted that the folding drive device also includes a linear drive component.

[0040] Specifically, the output end of the linear drive is hinged to the other end of one of the first folding rod 21 and the second folding rod 22 along its length. The linear drive is configured to have an unlocked state and a locked state. When the linear drive is in the unlocked state, the linear displacement of its output end causes the first folding rod 21 and the second folding rod 22 to rotate relative to each other. When the linear drive is in the locked state, its output end remains in a fixed position, so that the first folding rod 21, the second folding rod 22 and the intermediate door leaf section 11 remain in a locked position.

[0041] As one implementation method, such as Figures 1 to 4 , Figure 7 and Figure 8 As shown, the linear drive component is selected as hydraulic drive component 23.

[0042] The hydraulic drive component 23 includes a cylinder 231, a piston, and a piston rod 232. A receiving chamber is formed inside the cylinder 231. The piston is slidably disposed inside the receiving chamber and divides the receiving chamber into a first chamber and a second chamber. One end of the piston rod 232 along its length direction is connected to the piston, and the other end extends out of the cylinder 231 and is hinged to the other end of one of the first folding rod 21 and the second folding rod 22 along its length direction.

[0043] It should be noted that the hydraulic drive component 23 has an unlocked state and a locked state. When the hydraulic drive component 23 is in the unlocked state, by supplying hydraulic fluid to the first chamber or the second chamber, the piston and piston rod 232 are configured to make linear displacement, so as to drive the first folding rod 21 and the second folding rod 22 to rotate relative to each other, thereby realizing folding. When the hydraulic drive component 23 is in the locked state, the piston and piston rod 232 are configured to be relatively fixed. At this time, the piston rod 232 is at its maximum stroke, thereby forming a mechanical interlocking structure between the first folding rod 21, the second folding rod 22 and the intermediate door leaf section 11.

[0044] With this configuration, by setting up a hydraulic drive unit 23 and a piston in its cylinder 231 to divide the receiving chamber into a first chamber and a second chamber, in use, by supplying hydraulic fluid to the first chamber or the second chamber, the piston rod 232 can be driven to output a huge pushing and pulling force to overcome the huge resistance encountered when the door leaf folds in the water.

[0045] Meanwhile, by controlling the flow and pressure of hydraulic oil, stepless adjustment and precise control of the extension or retraction speed of piston rod 232 can be achieved, thereby ensuring that the side door leaf section 12 can smoothly and controllably complete the unfolding and folding action, avoiding impact and vibration caused by excessively fast action.

[0046] Furthermore, in the supported state, the relative fixation of the piston and piston rod 232 ensures the stable locking of the folded door body without the need for an additional mechanical locking device, thereby simplifying the structural design. Compared with the traditional mechanical drive system, it can reduce the size of the folding drive device 2, thereby saving the installation space of the folding drive device 2.

[0047] Of course, in other alternative implementations, the linear drive can also be a screw gate opener.

[0048] In one embodiment, such as Figures 1 to 4 As shown, the first folding rod 21 is provided with a first connecting body 211, and the first connecting body 211 is provided with a first limiting slope 212; the second folding rod 22 is provided with a second connecting body 221, and the second connecting body 221 is provided with a second limiting slope 222, the second limiting slope 222 being the mating surface of the first limiting slope 212; the folding assembly has an extended state, and when the folding assembly is in the extended state (locked state), the first limiting slope 212 and the second limiting slope 222 abut against each other.

[0049] With this configuration, a first limiting slope 212 is provided on the first connecting body 211 of the first folding rod 21, and a second limiting slope 222 is provided on the second connecting body 221 of the second folding rod 22. When the folding assembly is in the extended state, the first limiting slope 212 and the second limiting slope 222 abut tightly together to form a stable support node. This allows the huge thrust generated by the water pressure to be directly and linearly transmitted to the support arm 6 along the connection between the folding rods without causing the hinge point to bear excessive bending moment. This prevents the folding rods from rotating or undergoing slight deformation under impact loads or long-term loads, ensuring that the entire door acts as a rigid whole when blocking water, thereby guaranteeing sealing performance and structural safety.

[0050] Preferably, when the folding assembly is in the extended state (locked state), the first folding rod 21 and the second folding rod 22 are collinear.

[0051] It should be noted that when the folding assembly is in the locked state, the gate is subjected to positive water pressure. At this time, the two folding rods need to remain in a relatively fixed state and cannot be unlocked by themselves. When unlocking is required, the hydraulic drive component 23 is used to assist in unlocking.

[0052] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the inner side of the rotational connection between the middle door leaf section 11 and the side door leaf section 12 is provided with a third limiting slope 111 and a fourth limiting slope 121 that cooperate with each other; when the door structure is in the retracted state, the third limiting slope 111 and the fourth limiting slope 121 abut against each other to limit the excessive rotation between the side door leaf section 12 and the middle door leaf section 11.

[0053] With this configuration, by setting a third limiting slope 111 and a fourth limiting slope 121 that cooperate with each other on the inner side of the rotational connection between the middle door leaf section 11 and the side door leaf section 12, when the door is in the retracted state, the two slopes precisely abut against each other to form a reliable mechanical stop, effectively preventing excessive rotation between the side door leaf section 12 and the middle door leaf section 11 when moving towards the retracted state, and providing precise dimensional basis for the minimization design of the door garage 4.

[0054] Meanwhile, when the third limiting slope 111 and the fourth limiting slope 121 abut against each other, the external load is transferred from the hinge point to the large area of ​​the slope contact area, which can reduce the load on the hinge node, enhance the rigidity and stability of the door in the non-working state, effectively avoid collision with the inner wall of the door 4 due to structural shaking (i.e., motion interference), and improve the reliability of the equipment in long-term operation.

[0055] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a fifth limiting slope 112 and a sixth limiting slope 122 are provided on the outer side of the rotational connection between the middle door leaf section 11 and the side door leaf section 12. When the door structure is in the water-blocking state, the fifth limiting slope 112 and the sixth limiting slope 122 abut against each other to limit the excessive rotation between the side door leaf section 12 and the middle door leaf section 11.

[0056] With this configuration, by setting a fifth limiting slope 112 and a sixth limiting slope 122 that cooperate with each other on the outer side of the rotational connection between the middle door leaf section 11 and the side door leaf section 12, when the door is in the water-blocking state, the two slopes precisely abut against each other to form a reliable mechanical limit, effectively preventing excessive rotation between the side door leaf section 12 and the middle door leaf section 11 when switching towards the water-blocking state, and avoiding the risk of structural stress concentration and seal failure caused by excessive rotation.

[0057] It can be explained that, for example Figures 1 to 3 As shown, one of the middle door leaf section 11 and the side door leaf section 12 is provided with a hinge support 13, and the other is provided with a hinge mounting protrusion 14. The hinge support 13 and the hinge mounting protrusion 14 are respectively provided with through holes arranged at intervals along the axial direction. After the side door leaf section 12 is fully unfolded, fasteners are inserted into the coaxially arranged through holes to achieve mechanical locking.

[0058] It should be noted that no specific limitations are made on the construction of the outrigger.

[0059] As one implementation method, the support arm 6 is a frame-type load-bearing structure, such as... Figure 1 , Figure 2 and Figure 6As shown, it includes multiple main load-bearing members 611 extending along the length of the support arm and connecting members 612 connecting the main load-bearing members 611.

[0060] Furthermore, the support arm 6 is composed of multiple main load-bearing pipes and connecting chords between the main load-bearing pipes.

[0061] This design, by making the support arm 6 a lattice-type rod structure, consisting of multiple main load-bearing tubes and connecting chords between the main load-bearing tubes, enables the support arm 6 to achieve uniform stiffness distribution in all directions. This avoids the problem of insufficient stiffness in specific directions in traditional solid-web support arms 6, reduces the risk of local stress concentration, improves the critical load-bearing capacity of the support arm 6, and ensures that the support arm 6 will not experience local instability under complex stress conditions.

[0062] Furthermore, the single support arm 6 adopts a lattice rod structure composed of three steel pipes.

[0063] Preferably, the center of the two lower steel pipes is 10m, the center distance between the upper and lower steel pipes is 12m, and the connecting chord between the three main steel pipes uses steel pipes of two specifications: φ800×16 and φ800×40.

[0064] Furthermore, such as Figures 1 to 6 As shown, three lattice connecting rods are provided between the two support arms 6 to improve the overall rigidity and stability of the support arms 6.

[0065] Furthermore, the support arm 6 steel pipe is welded to the panel, and the two lower steel pipes of the support arm 6 extend directly into the outer arc surface.

[0066] Of course, in other alternative embodiments, the support arm 6 is a plate-beam structure. That is, the main load-bearing member 611 and the connecting member 612 are both plate and beam structures.

[0067] It should be noted that the construction of the gate hinge 7 is not specifically limited.

[0068] The gate hinge 7 includes a rotating component at the end of the support arm 6 and a supporting component on the hinge mounting platform 5. The rotating component and the supporting component are connected by a rotating hinge mechanism so that the support arm 6 can rotate relative to the hinge mounting platform 5.

[0069] In one embodiment, the rotating component is selected as a convex ball joint located at the end of the support arm 6, and the supporting component is selected as a concave base located on the support hinge mounting platform 5, with the convex ball joint rotatably mounted in the concave base.

[0070] This design, by incorporating a convex spherical hinge 7 that is rotatably mounted within a concave base, allows the support arm 6 to adapt to various angular movement requirements, making it particularly suitable for hydraulic structures requiring multi-directional adjustment. Simultaneously, the rotation of the convex spherical hinge within the concave base is a spherical motion, which adaptively compensates for minute deflections in multiple directions, releasing additional internal forces generated in the support arm 6 due to structural deformation. This prevents these stresses from acting on the support arm 6 and the hinge mounting platform 5 for extended periods, thereby protecting the main structure, extending its fatigue life, and enhancing the overall system's adaptability to complex operating conditions.

[0071] It can be noted that the convex ball joint is a multi-faceted cast iron ball joint, and the concave base is a concave cast iron base.

[0072] It can be noted that the new folding triangular door also includes a spherical pad, which is used to install between the convex ball hinge and the concave base.

[0073] This configuration, by placing a spherical liner between the convex ball joint and the concave base, transforms the direct metal-to-metal contact into a metal-to-liner material contact. A special material with self-lubricating properties and a low coefficient of friction can be selected as the liner, thereby reducing rotational resistance and frictional power consumption.

[0074] Preferably, the spherical pad material is glass fiber reinforced nylon (PA) or reinforced polypropylene (PP).

[0075] With this configuration, a spherical pad is provided between the contact surfaces of the convex spherical hinge and the concave base to reduce friction and transfer loads. In use, the gate hinge 7 can bear the weight of the gate, the positive water pressure, and the water pressure generated by the possible reverse head. All loads are ultimately transferred to the concrete structure on the shore through the gate hinge 7.

[0076] It should be noted that before use, such as before the flood season, the siltation within the rotation range of the triangular gate and the gate storage area 4 should be monitored, and the siltation height should be measured. If there are foreign objects or siltation that may affect the operation of the gate, they should be removed by means of a dredging vessel or a dredging robot.

[0077] It can be noted that the curved gate leaf 1, gate hinge 7, support arm 6, and folding assembly are made of duplex stainless steel (S32001).

[0078] It can be noted that when the gate structure is submerged in the gatehouse 4, the support arm 6 is located above the normal water level and can be used for maintenance.

[0079] It can be noted that a hinge installation platform 5 is provided at the gate hinge 7, and a retaining wall is provided at the hinge installation platform 5 to form a dry environment for maintenance.

[0080] It can be noted that the gate structure has an equipment compartment and a filling and draining compartment. Normally, the inspection and maintenance of water pumps, hydraulic pump stations, electrical equipment and water tanks are carried out after the gate reservoir 4 has sunk to the bottom. If the equipment needs to be replaced or the gate structure needs to be overhauled, a temporary cofferdam can be set up at the junction of the gate reservoir 4 and the outer river.

[0081] The novel folding triangular gate provided in the above embodiments, before the flood season, such as Figure 9 As shown, the side door leaf segment 12 folds towards the middle door leaf segment 11 and is stored inside the door storage compartment 4; near the flood season, as Figure 10 and Figure 11 As shown, the main opening and closing device 3 drives the arc-shaped gate leaf 1 to move towards the river channel and gradually unfolds the side gate leaf section 12 until it is fully unfolded, as shown. Figure 12 As shown, the side door leaf segments 12 of a pair of door structures that face each other come into contact, completely blocking the river channel opening and achieving water blocking.

[0082] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A novel folding triangular door, characterized in that, include: The door structure includes an arc-shaped door leaf (1) and a folding drive device (2). The arc-shaped door leaf (1) includes a middle door leaf section (11) and at least one side door leaf section (12) arranged sequentially in the tangential direction of the door leaf. The middle door leaf section (11) and the side door leaf section (12) are connected by a hinge mechanism. The side door leaf section (12) can rotate relative to the middle door leaf section (11). The door structure has a water-blocking state in which the side door leaf section (12) is unfolded, and a storage state in which the side door leaf section (12) is folded toward the middle door leaf section (11). The folding drive device (2) acts on the side door leaf section (12) to drive it to switch between the water-blocking state and the storage state around the hinge mechanism. The main opening and closing device (3) drives the gate structure to rotate around the vertical axis to open or close the river channel; Door storage (4) is used to accommodate the door structure in the storage state.

2. The novel folding triangular door according to claim 1, characterized in that, The novel folding triangular door also includes: Hinged mounting platform (5); Support arm (6), which is mounted on the hinge mounting platform (5) via gate hinge (7).

3. The novel folding triangular door according to claim 2, characterized in that, The folding drive device (2) includes: The folding assembly includes a first folding rod (21) and a second folding rod (22). One end of the first folding rod (21) and the second folding rod (22) along its length direction is used to be hinged to the support arm (6), and the other end of the first folding rod (21) along its length direction is used to be hinged to the other end of the second folding rod (22) along its length direction. The other end of the second folding rod (22) along its length direction is hinged to the side door leaf segment (12).

4. The novel folding triangular door according to claim 3, characterized in that, The folding drive device (2) further includes: A linear drive unit, the output end of which is hinged to the other end of one of the first folding rod (21) and the second folding rod (22) along its length direction, is configured to have an unlocked state and a locked state. When the linear drive unit is in the unlocked state, the linear displacement of its output end causes the first folding rod (21) and the second folding rod (22) to rotate relative to each other. When the linear drive unit is in the locked state, its output end remains fixed in position, so that the first folding rod (21), the second folding rod (22) and the intermediate door leaf section (11) remain locked in position.

5. The novel folding triangular door according to claim 4, characterized in that, The linear drive is a hydraulic drive (23), including a cylinder (231), a piston and a piston rod (232). A receiving chamber is formed inside the cylinder (231). The piston is slidably disposed in the receiving chamber and divides the receiving chamber into a first chamber and a second chamber. One end of the piston rod (232) along its length direction is connected to the piston, and the other end extends out of the cylinder (231) and is hinged to the other end along its length direction of one of the first folding rod (21) and the second folding rod (22).

6. The novel folding triangular door according to claim 3, characterized in that, The first folding rod (21) is provided with a first connecting body (211), and the first connecting body (211) is provided with a first limiting slope (212). The second folding rod (22) is provided with a second connecting body (221), the second connecting body (221) is provided with a second limiting slope (222), and the second limiting slope (222) is the mating surface of the first limiting slope (212); The folding assembly has an extended state, and when the folding assembly is in the extended state, the first limiting slope (212) abuts against the second limiting slope (222).

7. The novel folding triangular door according to claim 3, characterized in that, The inner side of the rotational connection between the middle door leaf section (11) and the side door leaf section (12) is provided with a third limiting slope (111) and a fourth limiting slope (121) that cooperate with each other. When the door structure is in the retracted state, the third limiting slope (111) abuts against the fourth limiting slope (121) to limit excessive rotation between the side door leaf segment (12) and the middle door leaf segment (11).

8. The novel folding triangular door according to claim 3, characterized in that, The outer side of the rotational connection between the middle door leaf segment (11) and the side door leaf segment (12) is provided with a fifth limiting slope (112) and a sixth limiting slope (122) that cooperate with each other. When the gate structure is in a water-blocking state, the fifth limiting slope (112) abuts against the sixth limiting slope (122) to limit excessive rotation between the side door leaf section (12) and the middle door leaf section (11).

9. The novel folding triangular door according to any one of claims 2-8, characterized in that, The arm (6) is a frame-type load-bearing structure, including multiple main load-bearing members (611) extending along the length of the arm and connecting members (612) connecting the main load-bearing members (611).

10. The novel folding triangular door according to any one of claims 2-7, characterized in that, The gate hinge (7) includes a rotating component at the end of the arm (6) and a supporting component on the hinge mounting platform (5). The rotating component and the supporting component are connected by a rotating hinge mechanism so that the arm (6) can rotate relative to the hinge mounting platform (5).

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