A bottom shaft sealing structure of a turnover steel gate

Abstract

This utility model discloses a bottom shaft sealing structure for a tilting steel gate, belonging to the technical field of bottom shaft sealing for tilting steel gates. Key technical features include a bottom plate with a sealing mechanism fixedly connected to its top. An auxiliary mechanism is threadedly connected to the top of the sealing mechanism. The sealing mechanism comprises a U-shaped plate, a rubber pad, a support base, a bottom shaft body, a metal baffle, a rubber strip, a bushing oil seal, and a sealing element. The U-shaped plate is threaded to the top of the bottom plate. By setting up the sealing mechanism and adopting a multi-seal design of a main sealing frame, an auxiliary sealing frame, and a shaft system seal, the sealing reliability is improved. The main sealing rubber pad utilizes elasticity and water pressure to achieve self-tightening sealing, blocking most of the water flow. The auxiliary sealing rubber strip forms a backup defense line, allowing leakage water to drain and facilitating monitoring. The bushing oil seal cooperates with the sealing element to prevent water leakage along the bottom shaft gap. This triple protection effectively solves the problem of insufficient sealing performance in traditional sealing methods.

Description

Technical Field

[0001] This utility model relates to the field of bottom shaft sealing technology for tilting steel gates, and in particular to a bottom shaft sealing structure for tilting steel gates. Background Technology

[0002] The tilting steel gate is a type of gate used in water conservancy projects to control water flow, such as blocking or discharging water. Its characteristic is that it is opened or closed by rotating around the bottom horizontal axis, similar to the action of a flap. The bottom shaft sealing structure is a sealing device at the contact point between the bottom of the gate and the gate bottom plate or gate pier, used to block the gap between the bottom of the gate and the foundation to prevent water leakage.

[0003] To ensure flood control safety and maximize the comprehensive efficiency of rivers, the management of rivers, artificial waterways, floodplains, flood storage areas, and flood detention areas mainly includes two major functions: river engineering management and social management. Sluice gates are the main control means in river management. Sluice gates are low-head hydraulic structures built on rivers and canals to control flow and regulate water levels. Closing the gates can block floods, tides, or raise the upstream water level to meet the needs of irrigation, power generation, navigation, aquaculture, environmental protection, industrial and domestic water use. Opening the gates can release floodwaters, floodwaters, wastewater, or wastewater, and can also supply water to downstream rivers or canals. In water conservancy projects, sluice gates are widely used as equipment for blocking, releasing, or taking in water.

[0004] The existing patent (publication number: CN202121695161.9) includes an inverted U-shaped gate base, with a circular gate fixed to the lower side of the inverted U-shaped gate base. A connecting plate is inserted into the inverted U-shaped gate base, and a rotating shaft is connected through the inverted U-shaped gate base and the connecting plate. Nuts are threaded to both ends of the rotating shaft. A circular gate cover plate is installed on the lower side of the connecting plate, and a fixing frame is installed on the circular gate cover plate. An adjusting chamber is installed at the top of the inverted U-shaped gate base, and a motor is installed inside the adjusting chamber. A winding reel is installed at the output end of the motor. A wire outlet hole is opened on one side of the adjusting chamber, and a guide wheel is installed below the wire outlet hole. A steel wire rope is fixed on the winding reel, passes through the wire outlet hole, and is placed on the guide wheel. The other end of the steel wire rope is tied to the fixing frame. This utility model starts working by driving the winding reel with a motor. The winding reel pulls and releases the steel wire rope, which pulls the circular gate cover plate to rotate around the rotating shaft, thereby realizing the opening and closing of the gate.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, existing methods for sealing the bottom shaft of a tilting steel gate typically involve directly installing a sealing structure at the bottom of the steel gate's bottom shaft to achieve a seal. While this method can seal the bottom shaft, its sealing performance is not ideal, its effect is limited, and it cannot achieve other auxiliary effects during the sealing process, making it impractical.

[0006] To address this, a flip-type steel gate bottom shaft sealing structure is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a flip-type steel gate bottom shaft sealing structure, which can solve the problems of existing flip-type steel gate bottom shaft sealing methods, which usually involve directly installing a sealing structure at the bottom of the steel gate bottom shaft to achieve sealing. Although this method can seal the steel gate bottom shaft, it is not only not ideal in terms of sealing performance and has a relatively simple effect, but it also cannot achieve other auxiliary effects during the sealing process, resulting in insufficient practicality.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a flip-type steel gate bottom shaft sealing structure, including a bottom plate, a sealing mechanism fixedly connected to the top of the bottom plate, and an auxiliary mechanism threadedly connected to the top of the sealing mechanism;

[0009] The sealing mechanism includes a U-shaped plate, a rubber pad, a support base, a bottom shaft body, a metal baffle, a rubber strip, a bushing oil seal, and a sealing element. The U-shaped plate is threaded to the top of the bottom plate, the rubber pad is fixedly connected to the top of the U-shaped plate, the support base is fixedly connected to the top of the bottom plate, the bottom shaft body is movably connected to the inner wall of the support base, the metal baffle is fixedly connected to the top of the bottom plate, the rubber strip is fixedly connected to the rear side of the metal baffle, the bushing oil seal is fixedly sleeved on the surface of the bottom shaft body, and the sealing element is fixedly connected to the bottom of the bushing oil seal.

[0010] Preferably, the auxiliary mechanism includes a threaded hole and a threaded rod, the threaded hole being formed on the inner wall of the base plate and the U-shaped plate, and the threaded rod being threadedly connected to the inner wall of the threaded hole.

[0011] Preferably, a mounting platform is fixedly connected to the top of the base plate, and a leaf door is fixedly connected to the top of the bottom shaft body.

[0012] Preferably, a hinge support is fixedly connected to the front side of the leaf door and the rear side of the mounting platform, and a hydraulic rod is movably connected to the inner wall of the hinge support.

[0013] Preferably, the size of the sealing element is adapted to the size of the rubber gasket, and the metal baffle is fixedly connected between the U-shaped plate and the rubber strip.

[0014] Preferably, a mounting plate is fixedly connected to the top of the base plate, and the rubber strip is fixedly connected to the top of the mounting plate.

[0015] Preferably, the inner wall of the base plate is provided with an installation groove, and an adjusting shim is movably connected to the inner wall of the installation groove.

[0016] Preferably, the adjusting shim is movably connected to the bottom of the U-shaped plate, the inner wall of the U-shaped plate is provided with an assembly groove, and the rubber pad is fixedly connected to the inner wall of the assembly groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application improves sealing reliability by setting up a sealing mechanism and adopting a multi-seal design of main sealing frame, auxiliary sealing frame and shaft system seal. The main sealing rubber gasket uses elasticity and water flow pressure to achieve self-tightening seal and block most of the water flow. The auxiliary sealing rubber strip forms a backup defense line, which can discharge the leaking water flow and facilitate monitoring. The shaft sleeve oil seal cooperates with the sealing element to prevent water flow from leaking along the bottom shaft gap. The triple protection effectively solves the problem of insufficient sealing performance of traditional sealing methods.

[0019] 2. This application enables the sealing mechanism to work in coordination by setting up auxiliary mechanisms, which have both dynamic adaptability and adjustment functions. The structural design of the rubber pad and U-shaped plate can adapt to the angle changes when the gate rotates, reducing friction loss. The threaded rod and adjusting shim can compensate for the settlement or unevenness of the base plate, ensuring that the sealing element is always in close contact with the base plate, avoiding sealing failure due to foundation deformation. At the same time, the threaded connection components are easy to disassemble and replace, reducing maintenance costs and further improving the practicality of the equipment. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the bottom shaft sealing structure of the flip-type steel gate of this utility model;

[0021] Figure 2 This is a partial structural diagram of the front side of the leaf door of this utility model;

[0022] Figure 3 This is a partial structural diagram of the rear side of the leaf door of this utility model;

[0023] Figure 4 This is a partial structural diagram of the top of the base plate of this utility model;

[0024] Figure 5 This is a partial structural diagram of the bottom of the base plate of this utility model.

[0025] In the diagram, 1. Sealing mechanism; 11. U-shaped plate; 12. Rubber pad; 13. Support seat; 14. Bottom shaft body; 15. Metal baffle; 16. Rubber strip; 17. Shaft sleeve oil seal; 18. Seal; 19. Leaf gate; 2. Auxiliary mechanism; 21. Threaded rod; 22. Mounting platform; 23. Hydraulic rod; 24. Hinge support; 25. Threaded hole; 26. Mounting groove; 27. Adjusting shim; 3. Base plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A flip-type steel gate bottom shaft sealing structure includes a bottom plate 3, a sealing mechanism 1 fixedly connected to the top of the bottom plate 3, and an auxiliary mechanism 2 threadedly connected to the top of the sealing mechanism 1.

[0029] The sealing mechanism 1 includes a U-shaped plate 11, a rubber pad 12, a support base 13, a bottom shaft body 14, a metal baffle 15, a rubber strip 16, a bushing oil seal 17, and a sealing element 18. The U-shaped plate 11 is threaded to the top of the bottom plate 3, the rubber pad 12 is fixedly connected to the top of the U-shaped plate 11, the support base 13 is fixedly connected to the top of the bottom plate 3, the bottom shaft body 14 is movably connected to the inner wall of the support base 13, the metal baffle 15 is fixedly connected to the top of the bottom plate 3, the rubber strip 16 is fixedly connected to the rear side of the metal baffle 15, the bushing oil seal 17 is fixedly sleeved on the surface of the bottom shaft body 14, and the sealing element 18 is fixedly connected to the bottom of the bushing oil seal 17.

[0030] In this embodiment: the sealing mechanism 1 and auxiliary mechanism 2 can be installed by setting the base plate 3; the rubber gasket 12 can be installed by setting the U-shaped plate 11. In this scheme, the lip of the U-shaped plate 11 faces upstream, on the high-pressure side, and the lip cross-section is designed to expand outward with a reserved cavity inside. The rubber gasket 12 can be filled with an elastic pad, such as a sponge or spring, to enhance the resilience after compression and adapt to the angle change when the leaf gate 19 rotates. The bottom shaft body 14 can be installed by setting the support seat 13; the metal baffle 15 can limit the excessive deformation of the rubber gasket 12 and also serve as a carrier for transmitting water flow pressure; the rubber strip 16 can achieve auxiliary sealing, located upstream, with a smaller compression amount. As a backup defense, the rubber strip 16 has grooves on its inner wall. If the main seal leaks, water can be discharged through the grooves to prevent it from seeping downstream. It also facilitates monitoring of the main seal status. Under normal operating conditions, the main seal blocks most of the water flow. If the main seal fails due to wear or deformation, the auxiliary seal can temporarily block the water flow. At the same time, the drainage channel will lead the leaked water downstream to avoid affecting the operation of the project and to buy time for maintenance. By setting the bushing oil seal 17, it can be connected to the bearing part of the bottom shaft body 14, which can effectively prevent water from seeping along the gap between the shaft and the bushing. By setting the sealing element 18, it can be connected to the bushing oil seal 17 and fixed to the bottom of the bottom shaft body 14, covering the bottom plate 3 area on the outside of the bottom shaft body 14, forming a double barrier.

[0031] Specifically, such as Figure 2 , Figure 4 , Figure 5 As shown, the auxiliary mechanism 2 includes a threaded hole 25 and a threaded rod 21. The threaded hole 25 is opened on the inner wall of the base plate 3 and the U-shaped plate 11, and the threaded rod 21 is threadedly connected to the inner wall of the threaded hole 25.

[0032] Specifically, such as Figure 2 , Figure 3 , Figure 4 As shown, a mounting platform 22 is fixedly connected to the top of the base plate 3, and a leaf door 19 is fixedly connected to the top of the base shaft body 14.

[0033] Specifically, such as Figure 2 , Figure 3 , Figure 4 As shown, a hinge support 24 is fixedly connected to the front side of the leaf door 19 and the rear side of the mounting platform 22, and a hydraulic rod 23 is movably connected to the inner wall of the hinge support 24.

[0034] In this embodiment: the threaded rod 21 can be installed by opening the threaded hole 25. By setting the threaded rod 21, the local height of the U-shaped plate 11 can be adjusted, as well as the settlement or unevenness of the bottom of the bottom shaft body 14. The hinge support 24 can be installed by setting the mounting platform 22. The bottom shaft body 14 can be installed by setting the leaf door 19. The hydraulic rod 23 can be installed by setting the hinge support 24. The hydraulic rod 23 can drive the leaf door 19 to rotate, thereby sealing the bottom of the bottom shaft body 14.

[0035] Specifically, such as Figure 2 , Figure 3 , Figure 4 As shown, the dimensions of the seal 18 are adapted to the dimensions of the rubber gasket 12, and the metal baffle 15 is fixedly connected between the U-shaped plate 11 and the rubber strip 16.

[0036] Specifically, such as Figure 3 , Figure 4 As shown, a mounting plate is fixedly connected to the top of the base plate 3, and a rubber strip 16 is fixedly connected to the top of the mounting plate.

[0037] In this embodiment: the rubber strip 16 can be installed by setting an mounting plate, and the gap at the bottom of the bottom shaft body 14 can be reduced by matching the size of the seal 18 with the size of the rubber pad 12.

[0038] Specifically, such as Figure 5 As shown, the inner wall of the base plate 3 is provided with a mounting groove 26, and an adjusting shim 27 is movably connected to the inner wall of the mounting groove 26.

[0039] Specifically, such as Figure 4 , Figure 5 As shown, the adjusting shim 27 is movably connected to the bottom of the U-shaped plate 11, and the inner wall of the U-shaped plate 11 is provided with an assembly groove, and the rubber pad 12 is fixedly connected to the inner wall of the assembly groove.

[0040] In this embodiment: The adjusting shim 27 can be installed by opening the mounting groove 26. The top of the adjusting shim 27 is fixedly connected to the support block. By setting the adjusting shim 27, when the U-shaped plate 11 moves downward after long-term use, the elasticity generated by the adjusting shim 27 can be used. The support block can absorb local pressure and prevent the U-shaped plate 11 from forming a gap with the base plate 3 due to long-term use, or from being damaged due to excessive compression caused by dents. The rubber pad 12 can be installed by opening the assembly groove.

[0041] Working principle: When the user needs to seal the bottom shaft body 14 of the tilting steel gate, firstly, when the gate or leaf gate 19 is in the water-blocking state, the main sealing rubber gasket 12 is tightly fitted to the bottom plate 3 under the action of water flow pressure. The structural design of the U-shaped plate 11 enhances its fit and blocks most of the water flow. The metal baffle 15 limits the excessive deformation of the rubber gasket 12 to ensure sealing stability. The auxiliary sealing rubber strip 16 serves as a backup defense line. If the main seal leaks, the water flow can be discharged through its grooves to prevent seepage downstream, while also alerting the staff for maintenance. During this process, the bushing oil seal 17 cooperates with the sealing element 18 to prevent water from seeping along the gap between the bottom shaft body 14 and the support seat 13, forming a double guarantee. When the gate or... When the leaf gate 19 is opened or closed, the hydraulic rod 23 drives the leaf gate 19 to rotate around the bottom shaft body 14 through the hinge support 24. The rubber pad 12 always keeps in contact with the bottom plate 3 due to elastic deformation, avoiding dynamic leakage. The cooperation between the U-shaped plate 11 and the rubber pad 12 reduces friction loss during rotation. When the bottom plate 3 under the bottom shaft body 14 settles or becomes uneven, the height of the U-shaped plate 11 can be adjusted by turning the threaded rod 21, or the support block of the adjusting shim 27 can be used to absorb local pressure, ensuring the fit between the sealing element 18 and the bottom plate 3 and maintaining the sealing effect. Through the above structure, the structure takes into account both the sealing performance when statically blocking water and the adaptability when dynamically rotating, significantly improving the operational reliability of the tilting steel gate or leaf gate 19.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bottom shaft sealing structure for a tilting steel gate, comprising a bottom plate (3), characterized in that: A sealing mechanism (1) is fixedly connected to the top of the base plate (3), and an auxiliary mechanism (2) is threadedly connected to the top of the sealing mechanism (1). The sealing mechanism (1) includes a U-shaped plate (11), a rubber pad (12), a support seat (13), a bottom shaft body (14), a metal baffle (15), a rubber strip (16), a bushing oil seal (17), and a sealing element (18). The U-shaped plate (11) is threaded to the top of the bottom plate (3). The rubber pad (12) is fixedly connected to the top of the U-shaped plate (11). The support seat (13) is fixedly connected to the top of the bottom plate (3). The bottom shaft body (14) is movably connected to the inner wall of the support seat (13). The metal baffle (15) is fixedly connected to the top of the bottom plate (3). The rubber strip (16) is fixedly connected to the rear side of the metal baffle (15). The bushing oil seal (17) is fixedly sleeved on the surface of the bottom shaft body (14). The sealing element (18) is fixedly connected to the bottom of the bushing oil seal (17).

2. The bottom shaft sealing structure of a tilting steel gate according to claim 1, characterized in that: The auxiliary mechanism (2) includes a threaded hole (25) and a threaded rod (21). The threaded hole (25) is opened on the inner wall of the base plate (3) and the U-shaped plate (11), and the threaded rod (21) is threadedly connected to the inner wall of the threaded hole (25).

3. The bottom shaft sealing structure of a tilting steel gate according to claim 1, characterized in that: The top of the base plate (3) is fixedly connected to the mounting platform (22), and the top of the bottom shaft body (14) is fixedly connected to the leaf door (19).

4. The bottom shaft sealing structure of a tilting steel gate according to claim 3, characterized in that: A hinge support (24) is fixedly connected to the front side of the leaf door (19) and the rear side of the mounting platform (22), and a hydraulic rod (23) is movably connected to the inner wall of the hinge support (24).

5. The bottom shaft sealing structure of a tilting steel gate according to claim 1, characterized in that: The size of the sealing element (18) is adapted to the size of the rubber gasket (12), and the metal baffle (15) is fixedly connected between the U-shaped plate (11) and the rubber strip (16).

6. The bottom shaft sealing structure of a tilting steel gate according to claim 1, characterized in that: The top of the base plate (3) is fixedly connected to an mounting plate, and the rubber strip (16) is fixedly connected to the top of the mounting plate.

7. The bottom shaft sealing structure of a tilting steel gate according to claim 1, characterized in that: The inner wall of the base plate (3) is provided with an installation groove (26), and an adjusting shim (27) is movably connected to the inner wall of the installation groove (26).

8. The bottom shaft sealing structure of a tilting steel gate according to claim 7, characterized in that: The adjusting shim (27) is movably connected to the bottom of the U-shaped plate (11), and the inner wall of the U-shaped plate (11) is provided with an assembly groove, and the rubber pad (12) is fixedly connected to the inner wall of the assembly groove.

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