Hydraulic supporting rod flap gate

Abstract

The utility model relates to the technical field of hydraulic engineering gates, in particular to a hydraulic supporting rod flap gate which comprises a door plate, an oil cylinder upper support, a bolt oil cylinder base, a bolt oil cylinder, an opening and closing oil cylinder, a base, a supporting rod support, a dam body, a supporting rod shaft, a supporting rod and a gate bottom shaft. A sliding groove is formed in the bolt oil cylinder base, a supporting rod shaft moving in the length direction of the sliding groove is assembled in the sliding groove, a bolt oil cylinder is arranged at the bottom end of the sliding groove, the bolt oil cylinder is provided with a telescopic bolt, the bolt is connected with the supporting rod shaft in a locked mode when extending, the supporting rod shaft is connected with a supporting rod, and the bottom of the supporting rod is hinged to a supporting rod support. The gate has the advantages that long-term reliable locking is achieved, continuous pressure maintaining of a hydraulic system is not needed, the problems of leakage and system aging caused by long-term high pressure can be effectively solved, usability of the gate is improved, and the service life of the gate is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of gate technology in water conservancy projects, and in particular to a hydraulic strut flap gate. Background Technology

[0002] Existing bottom-shaft gates are divided into two types: those with hydraulic cylinder pressure holding support and those with struts. Hydraulic cylinder pressure holding gates usually require hydraulic cylinders for pressure holding and locking, but long-term pressure holding by hydraulic cylinders can easily lead to internal leakage problems, affecting the normal use of the gate.

[0003] Existing multi-cylinder systems for gates with struts suffer from a lack of synchronization. While single-cylinder systems are often used to simplify the structure, they tend to be unstable and, when enlarged, concentrate stress points, making them prone to damage. This limits the size of single-cylinder gates, preventing them from being made taller or wider. Although double-cylinder flap gates (hydraulic dams) employ a multi-cylinder structure with unidirectional pressure, they often fail to open smoothly in the absence of water, affecting their effectiveness. During water storage, the gate panel and related mechanisms must withstand enormous water pressure and torque, requiring strong support. Existing bottom-hinged flap gate support systems have shortcomings that affect their reliability and safety.

[0004] Chinese utility model patent CN206752423U, entitled "A Hydraulic Bottom-Hinged Flip Gate," describes a hydraulic bottom-hinged flap gate with a simple structure and convenient operation. The gate opening angle can reach over 80°, effectively removing floating debris from the water surface. It is a hydraulic bottom-hinged flap gate that is easy to promote and apply. However, during water storage, the gate plate bears enormous water pressure and torque, relying on the pressure holding of the hydraulic cylinder for locking. This places high demands on the power consumption of the hydraulic station, the piping, and the sealing of the hydraulic cylinder. Long-term pressure holding in the hydraulic cylinder can easily lead to internal leakage, further increasing the system's complexity and maintenance difficulty.

[0005] Chinese utility model patent CN222666723U, entitled "A Flip-Type Gate Support Device," describes a gate with two hydraulic cylinders equipped with a synchronization device to ensure synchronized operation. When the gate is filled with water, the hinges between the gate panel, support rod, and base form a triangle, providing sufficient pressure resistance. The gate can fully fill with water when upright and completely discharge floodwater when lying flat, without affecting fish migration and ensuring unobstructed navigation. However, the gate panel has four rectangular slide rails (I, II, III, and IV) at its front end. Each slide rail has four supporting arc-shaped grooves. When these grooves sequentially contact the rolling bushings, the gate forms four water-filling positions with different inclination angles. However, during flood discharge, these positions need to be changed, which can easily lead to the arc-shaped grooves getting stuck with the rolling bushings. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a hydraulic strut flap gate. The strut, strut shaft, and strut support form a hinged sliding support structure, constituting a triangular stabilizing mechanism that decomposes and bears the enormous water pressure and hydraulic torque on the entire gate panel. The pin at the top of the hydraulic cylinder mechanically locks to the strut shaft, maintaining the gate panel in its supported position and achieving long-term reliable locking. This eliminates the need for continuous pressure maintenance in the hydraulic system, effectively preventing cylinder leakage and system aging caused by long-term high pressure, improving the usability of the flap gate, and achieving structural stability and long service life.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A hydraulic strut flap gate includes a gate panel, an upper cylinder support, a pin cylinder base, a pin cylinder, an opening and closing cylinder, a base, a strut support, a dam body, a strut shaft, a strut, and a gate bottom shaft. The opening and closing cylinder is hinged at both ends to the gate panel and the dam body via the upper cylinder support and the base. The bottom of the gate panel is hinged to one end of the dam body via the gate bottom shaft. The gate panel, the opening and closing cylinder, and the dam body form a triangular hinged opening and closing structure. The pin cylinder base is provided on the side of the gate panel connected to the opening and closing cylinder. The base of the pin cylinder has a sliding groove, and a support shaft that moves along the length of the groove is installed in the groove. The support shaft has a pin hole, and a pin cylinder is installed at the bottom of the groove. The pin cylinder is equipped with a telescopic pin, which locks into the pin hole on the support shaft when it extends. The pin cylinder is bolted to the base of the pin cylinder. The support shaft is connected to the support rod, and the bottom of the support rod is hinged to a support rod support. The support rod support is fixed to the dam body. The support rod, the support shaft, and the support rod support form a hinged sliding support structure.

[0009] Furthermore, the pin and the support rod shaft are mechanically locked when the door panel is in the water-filled state and in the support position. When the door panel is lying flat, the pin and the support rod shaft are unlocked, and the pin cylinder retracts the pin.

[0010] Furthermore, the hydraulic cylinder releases pressure when the door panel is in the support position.

[0011] Furthermore, the opening and closing cylinder, the pin cylinder, the pin cylinder base, the strut support, the strut shaft, and the strut are arranged as a set, and the number of sets is one or more.

[0012] Furthermore, when there are multiple sets of the complete system, multiple opening and closing hydraulic cylinders are controlled synchronously.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When the gate is filled with water, the triangular stabilizing mechanism formed by the gate plate, struts, and strut supports decomposes and bears the huge water pressure and hydraulic torque on the entire gate plate, achieving long-term reliable locking without the need for continuous pressure maintenance by the hydraulic system. This effectively eliminates leakage and system aging problems caused by long-term high pressure, improves the usability of the flap gate, and achieves the stability and long service life of the flap gate structure.

[0015] 2. The mechanical locking of the pin cylinder, combined with the hydraulic unloading design of the opening and closing cylinder, makes the mechanical locking structure flexible and reliable, avoiding jamming and improving the flexibility and practicality of the gate. It also prevents the opening and closing cylinder from failing under pressure for a long time, reduces the risk of accidental failure, and extends the overall service life of the device.

[0016] 3. Multiple opening and closing cylinders are driven in parallel, which can fully meet the requirements for opening and closing force and synchronization under complex working conditions such as large span and high water head, improve the application range of the gate, and improve the adaptability and operational reliability of the equipment.

[0017] 4. The base is made of high-strength steel and is firmly connected to the dam body, which effectively ensures the rigidity and comprehensive load-bearing capacity of the entire drive system, while facilitating modular installation and disassembly, and enabling flexible operation and maintenance management.

[0018] 5. This scheme not only meets the application requirements of modern water storage and flood discharge projects for small and medium-sized rivers, but also takes into account the special functional requirements such as ecological channels and unobstructed navigation, and has broad prospects for engineering promotion. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a hydraulic strut flap gate structure according to the present invention.

[0020] Figure 2 This is a schematic diagram of a hydraulic strut flap gate structure lying flat, as described in this utility model.

[0021] Figure 3 This is a schematic diagram of the door panel structure described in this utility model.

[0022] Figure 4 This is a schematic diagram of the pin-type hydraulic cylinder structure described in this utility model.

[0023] In the diagram: 1. Door panel; 2. Upper support of hydraulic cylinder; 3. Base of pin hydraulic cylinder; 4. Pin hydraulic cylinder; 5. Opening and closing hydraulic cylinder; 6. Base; 7. Support rod support; 8. Dam body; 9. Linkage shaft; 10. Support rod shaft; 11. Support rod; 12. Water-stop rubber; 13. Bottom shaft of gate; 14. Embedded bolt. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0025] like Figures 1-4As shown, a hydraulic strut flap gate includes a gate panel 1, an upper cylinder support 2, a pin cylinder base 3, a pin cylinder 4, an opening and closing cylinder 5, a base 6, a strut support 7, a dam body 8, a linkage shaft 9, a strut shaft 10, a strut 11, and a gate bottom shaft 13.

[0026] The opening and closing hydraulic cylinder 5 is hinged to the gate plate 1 and the dam body 8 via the upper cylinder support 2 and the base 6. The bottom of the gate plate 1 is hinged to one end of the dam body 8 via the gate bottom shaft 13. The gate plate 1, the opening and closing hydraulic cylinder 5, and the dam body 8 form a triangular hinged opening and closing structure. Two or more opening and closing hydraulic cylinders 5 are arranged in parallel, usually two or more, to improve the system's load-bearing capacity and synchronization performance. The front end of each opening and closing hydraulic cylinder 5 is connected to the upper cylinder support 2 on the gate plate 1 via a linkage shaft 9, and the bottom end is connected to the base 6 via a hinge. The opening and closing hydraulic cylinder 5 drives the opening and closing of the gate plate 1. When the piston rod of the opening and closing hydraulic cylinder 5 extends, it pushes the gate plate 1 to close; when the piston rod retracts, it drives the gate plate 1 to open, achieving reliable opening and closing of the large-sized gate plate 1. A water-stop rubber 12 is installed at the connection position between the gate bottom shaft 13 and the gate plate 1 to prevent water leakage when the gate plate 1 is closed and water is stored.

[0027] A pin-type hydraulic cylinder base 3 is installed on the side of the door panel 1 connected to the opening / closing cylinder 5. The pin-type hydraulic cylinder base 3 has a sliding groove, within which a support shaft 10, which moves along the length of the groove, is fitted. A pin hole is provided on the support shaft 10, and a pin-type hydraulic cylinder 4 is installed at the bottom of the groove. The pin-type hydraulic cylinder 4 has a telescopic pin; when the pin extends, it locks into the pin hole on the support shaft 10. The pin-type hydraulic cylinder 4 is fixedly connected to the pin-type hydraulic cylinder base 3 by bolts. When the door panel 1 is in a water-filled state, the pin-type hydraulic cylinder 4 extends, mechanically locking the support shaft 10 in the support position, achieving physical limit locking. At this time, the opening / closing cylinder 5 releases pressure, preventing internal leakage caused by prolonged pressure. When the door panel 1 is lying flat, the pin-type hydraulic cylinder 4 retracts its pin, and the opening / closing cylinder 5 slowly retracts, gradually opening the door panel 1, achieving smooth and safe opening and closing.

[0028] The strut shaft 10 connects to the strut 11, and the bottom of the strut 11 is hinged to the strut support 7. The strut support 7 is fixed to the dam body 8 by pre-embedded bolts 14. The pin cylinder base 3, strut 11, strut shaft 10, and strut support 7 form a hinged sliding support structure. The opening and closing of the door panel 1 is driven by the opening and closing cylinder 5, which links the hinged sliding support structure to support the door panel. When the door panel 1 is closed to store water, the opening and closing cylinder 5 extends, and the strut 11 is supported to bear pressure. The strut shaft 10 is locked, and the strut 11, the dam body 8, and the door panel 1 form a triangular support structure. The support structure is stable and has strong support force. When the door panel 1 is opened to drain water, the strut shaft 10 is unlocked, the opening and closing cylinder 5 shortens, the strut shaft 10 slides in the groove, the joint between the strut 11 and the strut support 7 rotates, the strut 11 is laid flat, and the door panel 1 lies flat to drain water.

[0029] Furthermore, the pin and the support shaft 10 are mechanically locked when the door panel 1 is in the water-filled state and in the support position. When the door panel 1 is lying flat, the pin and the support shaft 10 are unlocked, and the pin cylinder 4 retracts the pin.

[0030] Furthermore, when the door panel 1 is in the support position, the opening and closing cylinder 5 releases pressure.

[0031] Furthermore, the opening and closing cylinder 5, the pin cylinder 4, the pin cylinder base 3, the strut support 7, the strut shaft 10, and the strut 11 are set together as a set, and the number of sets can be single or multiple. The pin cylinder 4, the pin cylinder base 3, the strut support 7, the strut shaft 10, and the strut 11 are arranged next to the opening and closing cylinder 5. Depending on the number of single or multiple opening and closing cylinders 5, a single or multiple set is set, so that each opening and closing cylinder 5 has a set of hinged sliding support structure.

[0032] Furthermore, when there are multiple sets of the complete set, multiple opening and closing hydraulic cylinders 5 are controlled synchronously, and the simultaneous operation of multiple opening and closing hydraulic cylinders 5 improves the load-bearing capacity and synchronization performance.

[0033] like Figures 1-4 The working principle of a hydraulic strut flap gate is shown below:

[0034] Closing Process: At the start of closing the door panel 1, the opening / closing cylinder 5 is in its shortest position, and the door panel 1 is in a flat position. The hydraulic control equipment is activated, and the opening / closing cylinder 5 slowly extends, causing the support rod 11 and the cylinder to rotate counterclockwise. As the door panel 1 gradually approaches a vertical position, the latch cylinder 4, under hydraulic control, pushes out the latch and locks it with the pin hole on the support rod shaft 10, thus mechanically locking the door panel 1. At this time, the support rod shaft 10, support rod 11, and support rod support 7 utilize triangular stability to resist the water pressure and hydraulic torque on the door panel 1. Furthermore, the opening / closing cylinder 5 does not need to provide pressure support. While the latch locks the support rod shaft 10, the opening / closing cylinder 5 releases the pressure load, preventing the hydraulic system from continuing to bear high pressure after the door panel 1 is fully closed. Multiple opening / closing cylinders 5, through synchronous control of cylinder flow and displacement, ensure coordinated and consistent operation, guaranteeing uniform force distribution. This synchronization mechanism ensures the stability and safety of door panel 1 during the closing process, preventing any cylinder from overloading or operating unevenly.

[0035] Water storage and pressurization stage: This stage does not require hydraulic support, and is supported only by a three-point force support; namely, the strut shaft 10, strut 11, and strut support 7 form a stable triangular mechanism to bear all external loads, which improves long-term operational reliability and safety redundancy.

[0036] Opening Process: When opening the gate for drainage or flood discharge, the hydraulic control equipment is activated. The opening / closing cylinder 5 slowly retracts, pushing the support rod 11 and the opening / closing cylinder 5 to rotate clockwise. The pin unlocks from the support rod shaft 10, and the pin cylinder 4 slowly retracts the pin. The opening / closing cylinder 5 slowly shortens, gradually opening the gate. During this process, multiple opening / closing cylinders 5 work in coordination through a synchronous linkage system to ensure synchronized flow and displacement among them, avoiding excessive load on a single cylinder and preventing the risk of single-point overload.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydraulic strut flap gate, comprising a gate panel (1), an upper cylinder support (2), a pin cylinder base (3), a pin cylinder (4), an opening and closing cylinder (5), a base (6), a strut support (7), a dam body (8), a strut shaft (10), a strut (11), and a gate bottom shaft (13), wherein the opening and closing cylinder (5) is hinged at both ends to the gate panel (1) and the dam body (8) through the upper cylinder support (2) and the base (6), and the bottom of the gate panel (1) is hinged to one end of the dam body (8) through the gate bottom shaft (13), and the gate panel (1), the opening and closing cylinder (5), and the dam body (8) form a triangular hinged opening and closing structure; characterized in that, The door panel (1) is connected to the opening and closing cylinder (5) on one side of the panel with a pin cylinder base (3). The pin cylinder base (3) has a sliding groove. The sliding groove has a support shaft (10) that moves along the length of the sliding groove. The support shaft (10) has a pin hole. The bottom of the sliding groove has a pin cylinder (4). The pin cylinder (4) has a telescopic pin. When the pin is extended, it is locked to the pin hole on the support shaft (10). The support shaft (10) is connected to the support rod (11). The bottom of the support rod (11) is hinged to the support rod support (7). The support rod support (7) is fixed on the dam body (8). The support rod (11), the support shaft (10) and the support rod support (7) form a hinged sliding support structure.

2. A hydraulic strut flap gate according to claim 1, characterized in that, The pin and the support shaft (10) are mechanically locked when the door panel (1) is in the support position while it is in the water-filled state. When the door panel (1) is lying flat, the pin and the support shaft (10) are unlocked, and the pin cylinder (4) retracts the pin.

3. A hydraulic strut flap gate according to claim 1, characterized in that, When the door panel (1) is in the support position, the opening and closing cylinder (5) releases pressure.

4. A hydraulic strut flap gate according to claim 1, characterized in that, The opening and closing cylinder (5), the pin cylinder (4), the pin cylinder base (3), the strut support (7), the strut shaft (10) and the strut (11) are set together, and the number of sets is one or more.

5. A hydraulic strut flap gate according to claim 4, characterized in that, When there are multiple sets of the complete equipment, multiple opening and closing hydraulic cylinders (5) are controlled synchronously.

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