Gate bottom shaft sealing structure for hydraulic engineering
By designing three sealing lines on the bottom shaft of the gate and combining reinforcing rods with reinforced concrete, the problem of moisture entering the hoist chamber was solved, achieving good sealing and stable installation of the bottom shaft of the gate, and ensuring the normal operation of the hoist.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POWERCHINA HUADONG ENG CORP LTD
- Filing Date
- 2026-03-20
- Publication Date
- 2026-05-29
AI Technical Summary
The bottom shaft of existing steel gate structures is prone to moisture ingress in the hoist chamber, affecting the normal operation of the hoist. An effective sealing structure is needed to ensure the dryness of the hoist chamber.
The design employs a three-layer sealing system, consisting of sealing nuts and sleeves, sealing bearings and sealing plates, forming the first, second and third layers of sealing defense. The rigidity and support of the structure are enhanced by the combination of reinforcing rods and reinforced concrete, ensuring sealing and stable installation.
It achieves good sealing between the gate bottom shaft and the wall, keeps the hoist chamber dry, ensures the normal operation of the hoist, and enhances the support force and installation stability of the gate bottom shaft.
Smart Images
Figure CN122106030A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of water conservancy engineering equipment technology, specifically to a gate bottom shaft sealing structure for water conservancy projects. Background Technology
[0002] Water conservancy projects are engineering projects built to control and regulate surface water and groundwater in nature to achieve the purpose of eliminating harm and promoting benefits. They are also called water projects. Water is an essential and precious resource for human production and life, but its natural state does not fully meet human needs. Only by building water conservancy projects can we control water flow, prevent floods, and regulate and distribute water to meet the needs of people's life and production for water resources.
[0003] In water conservancy and hydropower construction, sluice gates and rubber dams have been widely used due to the needs of urban water use, landscape construction, environmental remediation, irrigation, and power generation in my country. However, the key component of rubber dams, the dam bag, is made of rubber and canvas. The production of dam bags involves many steps and the process is difficult to control. In addition, rubber is prone to aging, which can easily lead to quality accidents. Therefore, steel dams have emerged as a solution.
[0004] In existing technology, there is a type of steel dam gate whose structure mainly includes a bottom shaft. The bottom shaft is installed on multiple hinge seats fixed at the bottom of the river channel. Both ends of the bottom shaft extend through the gate wall into the hoisting machine chamber, where a hoisting machine is located. One end of the bottom shaft is connected to one end of a crank arm, and the other end of the crank arm is hinged to the extended end of the piston rod of the hoisting machine's cylinder. The gate leaf for water obstruction is welded to the bottom shaft. When the hoisting machine is working, the bottom shaft can be driven to rotate through the crank arm, causing the gate leaf to stand upright to obstruct water or to fall down to release water. Therefore, in actual use, the bottom shaft of the steel structure gate will enter the hoisting machine chamber and connect to the hoisting machine's drive device. In order to better ensure the normal operation of the hoisting machine's drive device, the hoisting machine chamber must be kept dry. Therefore, a sealing structure for the bottom shaft of a gate used in water conservancy projects is needed. Summary of the Invention
[0005] The purpose of this invention is to provide a gate bottom shaft sealing structure for water conservancy projects, thereby solving the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a gate bottom shaft sealing structure for water conservancy projects, comprising a wall and a connecting sleeve, wherein the connecting sleeve is embedded inside the wall, a sealing bearing is fixedly connected to the left side of the inner wall of the connecting sleeve, a sealing sleeve is inserted inside the sealing bearing, a main shaft is inserted inside the sealing sleeve, a thread is formed on the outer surface of the main shaft near the wall, and a sealing nut is fitted on the outer surface of the main shaft near the wall, and the sealing nut is threadedly connected to the thread. A circular sealing plate is fixedly connected to the center of the inner wall of the connecting sleeve. The sealing plate has a through-groove mounting groove, and one end of the main shaft inside the connecting sleeve passes through this mounting groove. Multiple evenly distributed inner grooves are formed on the inner wall of the mounting groove. Multiple evenly distributed recesses are formed at the center of the outer surface of the connecting sleeve, and these recesses correspond to the inner grooves. A through-groove is formed between the recesses and the inner grooves. A reinforcing rod and a pressing rod are rotatably connected to the left side of each recess via a rotating rod. One end of the extrusion rod, near the center of the mounting groove, penetrates the through groove and the inner groove II, and is in contact with the outer surface of the main shaft inside the mounting groove. A spring II is fixedly connected to the left side of the extrusion rod between the inner groove II and its left side wall. A reinforcing rod II is rotatably connected to the right side of the groove via a rotating rod I. A front-to-back through-type limiting groove is formed inside the reinforcing rod II, and a limiting rod is movably connected inside the limiting groove. The front end of the limiting rod penetrates the reinforcing rod I and is rotatably connected to it. Next, a second sealing bearing is fixedly connected to the right side of the inner wall of the connecting sleeve. A second sealing sleeve is inserted inside the second sealing bearing. A through-wall shaft is inserted inside the second sealing sleeve. A splicing assembly is provided at the left end of the through-wall shaft. The end of the through-wall shaft located inside the connecting sleeve is installed with the end of the main shaft located inside the connecting sleeve through the splicing assembly. A second thread is opened on the outer surface of the through-wall shaft near the wall. A second sealing nut is fitted on the outer surface of the through-wall shaft near the wall, and the second sealing nut is threadedly connected to the second thread.
[0007] Preferably, the splicing assembly includes a splicing groove formed inside the main shaft and located inside the connecting sleeve. A splicing rod is inserted into the splicing groove, and one end of the splicing rod away from the center of the main shaft is fixedly connected to one end of the through-wall shaft located inside the connecting sleeve. The splicing rod has a vertically penetrating inner groove. Sliding plates are slidably connected to the upper and lower parts of the inner groove. A spring is fixedly connected between the opposite sides of the two sliding plates. A limit block is fixedly connected to the opposite sides of the two sliding plates. The side of the limit block away from the center of the inner groove is inserted into the splicing groove.
[0008] Preferably, the splicing groove is configured as a horizontal T-shape.
[0009] Preferably, the side opposite to the sealing nut one and the sealing nut two are respectively fitted with the side opposite to the sealing sleeve one and the sealing sleeve two.
[0010] Preferably, the sealing sleeve one and the sealing sleeve two are located at the ends of one side of the wall outside, and their opposite sides are in contact with the outer surface of the wall.
[0011] Preferably, one end of the main shaft located inside the connecting sleeve is in contact with one end of the through-wall shaft located inside the connecting sleeve.
[0012] Preferably, the wall is formed by pouring reinforced concrete, and the first reinforcing rod matches the second reinforcing rod and the reinforced concrete.
[0013] Preferably, one end of the through-wall shaft located outside the wall is fixedly installed with the drive device inside the opening and closing machine room.
[0014] Preferably, the through-wall shaft is rotatably connected to the inside of the connecting sleeve via the second sealed bearing.
[0015] Preferably, the main shaft is rotatably connected to the inside of the connecting sleeve via the sealed bearing.
[0016] This invention provides a gate bottom shaft sealing structure for hydraulic engineering, which has the following advantages: (1) The first sealing line between the main shaft and the wall is formed by sealing nut one, sealing sleeve one and sealing bearing one, and the second sealing line is formed by sealing plate. The third sealing line is formed by sealing bearing two, sealing sleeve two and sealing nut two. This makes the sealing between the main shaft and the wall better. The three sealing lines can keep the inside of the hoisting machine dry, so as not to affect the operation of the hoisting machine. This makes the bottom shaft of the gate better sealed and more practical.
[0017] (2) The main shaft passes through one end of the installation groove, which will squeeze the compression rod, causing the reinforcing rod 1 to rotate and move out of the groove through the rotation of the rotating rod 2. Then, the rotation of the reinforcing rod 1, through the movable connection between the limiting rod and the limiting groove, and the rotation of the limiting rod and the reinforcing rod 2, will drive the reinforcing rod 2 to rotate and move out of the groove under the rotation of the rotating rod 1. In this way, the reinforcing rod 1 and the reinforcing rod 2 can be moved out of the groove and inserted into the steel bars in the reinforced concrete inside the wall. The reinforcing rod 1 and the reinforcing rod 2 can be cast together with the reinforced concrete inside the wall, so that the connecting sleeve can be stably installed inside the wall and can effectively enhance the structural rigidity and support of the connecting sleeve, thereby making the support force of the gate bottom shaft sealing structure stronger.
[0018] (3) By pressing the limiting block, the limiting block is compressed into the inner groove of the splicing rod by squeezing the sliding plate and spring 1. The spring 1 is squeezed and has a rebound force. Then, the splicing rod is inserted into the splicing groove so that the end of the through-wall rod inside the connecting sleeve is in contact with the end of the main shaft inside the connecting sleeve. When the splicing rod is fully inserted into the splicing groove, the rebound force of spring 1 will push the sliding plate and the limiting block to move. This allows the limiting block to move into the splicing groove to limit the movement of the splicing rod, so that the splicing rod is stably installed in the splicing groove. When the through-wall shaft rotates, the limiting block inserted into the splicing groove drives the main shaft to rotate. This allows the gate bottom shaft sealing structure to be spliced and installed with the wall, making the installation more convenient and easier to transport. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 For the present invention Figure 1 Enlarged structural diagram at point B; Figure 4 This is a three-dimensional structural diagram of the present invention.
[0020] In the diagram: 1. Wall; 2. Connecting sleeve; 3. Thread 1; 4. Main shaft; 5. Sealing nut 1; 6. Sealing sleeve 1; 7. Sealing bearing 1; 8. Splicing assembly; 801. Splicing groove; 802. Inner groove 1; 803. Spring 1; 804. Sliding plate; 805. Limiting block; 806. Splicing rod; 9. Sealing bearing 2; 10. Sealing sleeve 2; 11. Sealing nut 2; 12. Thread 2; 13. Through-wall shaft; 14. Reinforced concrete; 15. Reinforcing rod 1; 16. Limiting rod; 17. Limiting groove; 18. Groove; 19. Reinforcing rod 2; 20. Rotating rod 1; 21. Through groove; 22. Sealing plate; 23. Extrusion rod; 24. Mounting groove; 25. Spring 2; 26. Inner groove 2; 27. Rotating rod 2. Detailed Implementation
[0021] 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, and 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.
[0022] like Figure 1-4As shown, the present invention provides a technical solution: a gate bottom shaft sealing structure for water conservancy projects, including a wall 1 and a connecting sleeve 2. The connecting sleeve 2 is embedded inside the wall 1. A sealing bearing 7 is fixedly connected to the left side of the inner wall of the connecting sleeve 2. A sealing sleeve 6 is inserted inside the sealing bearing 7. A main shaft 4 is inserted inside the sealing sleeve 6. A thread 3 is formed on the outer surface of the main shaft 4 near the wall 1. A sealing nut 5 is fitted on the outer surface of the main shaft 4 near the wall 1, and the sealing nut 5 is threadedly connected to the thread 3. A circular sealing plate 22 is fixedly connected to the center of the inner wall of the connecting sleeve 2. A left-right through mounting groove 24 is formed inside the sealing plate 22, and one end of the main shaft 4 located inside the connecting sleeve 2 passes through the mounting groove 24. The inner wall of the mounting groove 24 has multiple evenly distributed inner grooves 26. The outer surface of the connecting sleeve 2 has multiple evenly distributed grooves 18 at its center, with each groove 18 corresponding to one of the inner grooves 26. A through groove 21 is formed between the grooves 18 and the inner grooves 26. A reinforcing rod 15 and a pressing rod 23 are rotatably connected to the left side of the inner groove 18 via a rotating rod 27. One end of the pressing rod 23, near the center of the mounting groove 24, passes through the through groove 21 and the inner groove 26, and is in contact with the outer surface of the main shaft 4 inside the mounting groove 24. A spring 25 is fixedly connected to the left side of the pressing rod 23 between the inner groove 26 and its left inner wall. A reinforcing rod is rotatably connected to the right side of the inner groove 18 via a rotating rod 20. The reinforcing rod 19 has a through-type limiting groove 17 inside, and a limiting rod 16 is movably connected inside the limiting groove 17. The front end of the limiting rod 16 passes through the reinforcing rod 15 and is rotatably connected to the reinforcing rod 15. A sealing bearing 9 is fixedly connected to the right side of the inner wall of the connecting sleeve 2. A sealing sleeve 10 is inserted inside the sealing bearing 9. A through-wall shaft 13 is inserted inside the sealing sleeve 10. A splicing component 8 is provided at the left end of the through-wall shaft 13. The end of the through-wall shaft 13 located inside the connecting sleeve 2 is installed with the end of the main shaft 4 located inside the connecting sleeve 2 through the splicing component 8. A thread 12 is provided on the outer surface of the through-wall shaft 13 near the wall 1. A sealing nut 11 is fitted on the outer surface of the through-wall 1 near the wall 1. 11 is threaded to 12. Therefore, during use, the connecting sleeve 2 is first embedded inside the wall 1, then the sealing sleeve 6 is fitted onto the outer surface of the main shaft 4, and the sealing sleeve 6 is inserted into the sealing bearing 7. During the insertion process, one end of the connecting sleeve 2 penetrates the mounting groove 24 inside the sealing plate 22, and the end of the main shaft 4 penetrating the mounting groove 24 will press the pressing rod 23, causing the reinforcing rod 15 to rotate and move out of the groove 18 through the rotation of the rotating rod 27. Then, the rotation of the reinforcing rod 15, through the movable connection between the limiting rod 16 and the limiting groove 17, and the rotation of the limiting rod 16 and the reinforcing rod 19, drives the reinforcing rod 19 to rotate and move out of the groove 18 under the rotation of the rotating rod 20.This allows reinforcing rod 15 and reinforcing rod 19 to be moved out of groove 18 and inserted into the reinforcing steel bars in the reinforced concrete 14 inside the wall 1. It also allows reinforcing rod 15 and reinforcing rod 19 to be cast together with the reinforced concrete 14 inside the wall 1, thus ensuring that the connecting sleeve 2 can be stably installed inside the wall 1. This effectively enhances the structural rigidity and support of the connecting sleeve 2, resulting in stronger support for the gate bottom shaft sealing structure. Next, sealing sleeve 10 is fitted onto the outer surface of the through-wall shaft 13 and inserted into the sealing bearing 9. The through-wall shaft 13 is then spliced and installed with the main shaft body 4 via the splicing assembly 8. Finally, sealing nut 1... The threaded connection between thread 5 and thread 3, and the threaded connection between sealing nut 21 and thread 22, ensures the stable installation of the main shaft 4, the through-wall shaft 13, and the wall 1. Simultaneously, sealing nut 15, sealing sleeve 16, and sealing bearing 17 form the first line of defense between the main shaft 4 and the wall 1. Sealing plate 22 forms the second line of defense, and sealing bearing 29, sealing sleeve 210, and sealing nut 21 form the third line of defense. This ensures good sealing between the main shaft 4 and the wall 1, and the three lines of defense keep the inside of the gate hoist chamber dry, thus not affecting the operation of the gate hoist. Therefore, the gate bottom shaft has good sealing performance and strong practicality.
[0023] The splicing assembly 8 includes a splicing groove 801 located inside the main shaft 4 and inside the connecting sleeve 2. A splicing rod 806 is inserted into the splicing groove 801, and one end of the splicing rod 806 away from the center of the main shaft 4 is fixedly connected to one end of the through-wall shaft 13 located inside the connecting sleeve 2. The splicing rod 806 has a vertically penetrating inner groove 802. Sliding plates 804 are slidably connected to the upper and lower parts of the inner groove 802. A spring 803 is fixedly connected between the opposite sides of the two sliding plates 804. A limiting block 805 is fixedly connected to the opposite sides of the two sliding plates 804. The side of the limiting block 805 away from the center of the inner groove 802 is inserted into the splicing groove 801. Therefore, when using the splicing assembly 8 to splice the main shaft 4 and the through-wall shaft 13, the limiting block 805 is first pressed to cause the limiting block 805 to compress the sliding plate 804 and the spring 803. The splicing rod 806 is retracted into the inner groove 802 inside the splicing rod 806, and the spring 803 is compressed and has a rebound force. Then, the splicing rod 806 is inserted into the splicing groove 801, so that the end of the through-wall rod located inside the connecting sleeve 2 is in contact with the end of the main shaft 4 located inside the connecting sleeve 2. When the splicing rod 806 is fully inserted into the splicing groove 801, the rebound force of the spring 803 will push the sliding plate 804 and the limiting block 805 to move. This allows the limiting block 805 to move into the splicing groove 801 to limit the movement of the splicing rod 806, so that the splicing rod 806 is stably installed inside the splicing groove 801. When the through-wall shaft 13 rotates, the limiting block 805 inserted into the splicing groove 801 drives the main shaft 4 to rotate. This allows the gate bottom shaft sealing structure to be spliced and installed with the wall 1, making installation more convenient and transportation easier.
[0024] The splicing groove 801 is designed in a horizontal T-shape, so that the limiting block 805 can be inserted into the splicing groove 801 for limiting during installation.
[0025] The sides of sealing nut 15 and sealing nut 21 that are opposite to each other are respectively fitted to the sides of sealing sleeve 16 and sealing sleeve 20 that are opposite to each other, so sealing nut 15 and sealing nut 21 can be separated from sealing sleeve 16 and sealing sleeve 20.
[0026] The sealing sleeve 6 and the sealing sleeve 10 are located at the ends of one side outside the wall 1, and their opposite sides are in contact with the outer surface of the wall 1. Therefore, the sealing sleeve 6 and the sealing sleeve 10 can rotate with the rotation of the main shaft 4 and the through-wall shaft 13.
[0027] One end of the main spindle 4 located inside the connecting sleeve 2 is in contact with the other end of the through-wall shaft 13 located inside the connecting sleeve 2, so the main spindle 4 and the through-wall shaft 13 can be spliced and installed.
[0028] The wall 1 is formed by pouring reinforced concrete 14, and the first reinforcing rod 15 and the second reinforcing rod 19 are matched with the reinforced concrete 14. Therefore, the first reinforcing rod 15 and the second reinforcing rod 19 can be matched with the reinforcing bars in the reinforced concrete 14 inside the wall 1, so that the connecting sleeve 2 can be stably installed inside the wall 1 and can effectively enhance the structural rigidity and support of the connecting sleeve 2.
[0029] The end of the through-wall shaft 13 located outside the wall 1 is fixedly installed with the drive device inside the gate opening and closing machine room. Therefore, the drive device inside the gate opening and closing machine room can drive the through-wall shaft 13 to rotate, thereby driving the main shaft 4 to rotate and causing the gate to open and close.
[0030] The through-wall shaft 13 is rotatably connected to the inside of the connecting sleeve 2 via the sealed bearing 2 9, so the through-wall shaft 13 can rotate inside the connecting sleeve 2.
[0031] The main spindle 4 is rotatably connected to the inside of the connecting sleeve 2 via a sealed bearing 7, so the main spindle 4 can rotate inside the connecting sleeve 2.
[0032] The workflow of this invention is as follows: In use, the connecting sleeve 2 is first embedded inside the wall 1, then the sealing sleeve 6 is fitted onto the outer surface of the main shaft 4, and the sealing sleeve 6 is inserted into the sealing bearing 7. During the insertion process, one end of the connecting sleeve 2 penetrates the mounting groove 24 inside the sealing plate 22, and the end of the main shaft 4 penetrating the mounting groove 24 presses against the pressing rod 23, causing the reinforcing rod 15 to rotate and move out of the groove 18 through the rotation of the rotating rod 27. Then, the rotation of the reinforcing rod 15... The movable connection between the limiting rod 16 and the limiting groove 17, and the rotation of the limiting rod 16 and the second reinforcing rod 19, cause the second reinforcing rod 19 to rotate and move out of the groove 18 under the rotation of the first rotating rod 20. This allows the first reinforcing rod 15 and the second reinforcing rod 19 to move out of the groove 18 and insert into the reinforcing steel bars in the reinforced concrete 14 inside the wall 1. Furthermore, this allows the first reinforcing rod 15 and the second reinforcing rod 19 to be cast together with the reinforced concrete 14 inside the wall 1, thus ensuring that the connecting sleeve 2 can be stably installed inside the wall 1. To effectively enhance the structural rigidity and support of the connecting sleeve 2, thereby increasing the support force of the gate bottom shaft sealing structure, the sealing sleeve 2 10 is then fitted onto the outer surface of the through-wall shaft 13 and inserted into the sealing bearing 2 9. The through-wall shaft 13 is then spliced and installed with the main shaft body 4 via the splicing assembly 8. Finally, the threaded connection between the sealing nut 1 5 and thread 1 3, and the threaded connection between the sealing nut 2 11 and thread 2 12, ensures the secure installation of the main shaft body 4, the through-wall shaft 13, and the wall 1. The sealing nut 5, sealing sleeve 6, and sealing bearing 7 form the first sealing line between the main shaft 4 and the wall 1. The sealing plate 22 forms the second sealing line, and the sealing bearing 9, sealing sleeve 10, and sealing nut 11 form the third sealing line. This ensures a good seal between the main shaft 4 and the wall 1. The three sealing lines also keep the inside of the hoist chamber dry, thus not affecting the operation of the hoist. As a result, the bottom shaft of the gate has good sealing performance and is highly practical.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A gate bottom shaft sealing structure for water conservancy projects, comprising a wall (1) and a connecting sleeve (2), characterized in that: The connecting sleeve (2) is embedded inside the wall (1). A sealing bearing (7) is fixedly connected to the left side of the inner wall of the connecting sleeve (2). A sealing sleeve (6) is inserted inside the sealing bearing (7). A main shaft (4) is inserted inside the sealing sleeve (6). A thread (3) is opened on the outer surface of the main shaft (4) near the wall (1). A sealing nut (5) is fitted on the outer surface of the main shaft (4) near the wall (1). The sealing nut (5) is threadedly connected to the thread (3). A circular sealing plate (22) is fixedly connected to the center of the inner wall of the connecting sleeve (2). A left-right through mounting groove (24) is opened inside the sealing plate (22). The main shaft (4) is located inside the connecting sleeve (2) and its end passes through the mounting groove (24). The inner wall of the mounting groove (24) is provided with a plurality of evenly distributed inner grooves (26). The center of the outer surface of the connecting sleeve (2) is provided with a plurality of evenly distributed grooves (18). The grooves (18) correspond to the inner grooves (26). A through groove (21) is provided between the grooves (18) and the inner grooves (26). The left side of the groove (18) is rotatably connected to the reinforcing rod (15) and the pressing rod (23) by the rotating rod (27). The end of the pressing rod (23) near the center of the mounting groove (24) passes through the through groove (21). The inner groove (26) and the outer surface of the main shaft (4) are in contact with the mounting groove (24). The left side of the extrusion rod (23) is fixedly connected to the inner groove (26) and the left side wall of the inner groove (26). The right side of the groove (18) is rotatably connected to the reinforcing rod (19) through the rotating rod (20). The reinforcing rod (19) has a front and rear through-type limiting groove (17) inside. The limiting groove (17) is movably connected to the limiting rod (16). The front end of the limiting rod (16) passes through the reinforcing rod (15) and is rotatably connected to the reinforcing rod (15). The right side of the inner wall of the connecting sleeve (2) A sealed bearing 2 (9) is fixedly connected. A sealed sleeve 2 (10) is inserted inside the sealed bearing 2 (9). A through-wall shaft 13 is inserted inside the sealed sleeve 2 (10). A splicing component 8 is provided at the left end of the through-wall shaft 13. The end of the through-wall shaft 13 located inside the connecting sleeve 2 is installed with the end of the main shaft body 4 located inside the connecting sleeve 2 through the splicing component 8. A thread 2 (12) is opened on the outer surface of the through-wall shaft 13 near the wall (1). A sealing nut 2 (11) is fitted on the outer surface of the through-wall body 1 near the wall (1). The sealing nut 2 (11) is threadedly connected to the thread 2 (12).
2. The gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The splicing assembly (8) includes a splicing groove (801) located inside the main shaft (4) and inside the connecting sleeve (2). A splicing rod (806) is inserted into the splicing groove (801), and one end of the splicing rod (806) located away from the center of the main shaft (4) is fixedly connected to one end of the through-wall shaft (13) located inside the connecting sleeve (2). The splicing rod (806) has an inner groove (802) that runs vertically through it. Sliding plates (804) are slidably connected to the upper and lower parts of the inner groove (802). A spring (803) is fixedly connected between the opposite sides of the two sliding plates (804). A limiting block (805) is fixedly connected to the opposite sides of the two sliding plates (804). The side of the limiting block (805) located away from the center of the inner groove (802) is inserted into the splicing groove (801).
3. The gate bottom shaft sealing structure for water conservancy projects according to claim 2, characterized in that: The splicing groove (801) is configured as a horizontal T-shape.
4. The gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The sealing nut one (5) is attached to the side opposite to the sealing nut two (11) and the sealing sleeve one (6) is attached to the side opposite to the sealing sleeve two (10).
5. A gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The sealing sleeve one (6) and the sealing sleeve two (10) are located at the ends of one side outside the wall (1), and their opposite sides are in contact with the outer surface of the wall (1).
6. The gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The end of the main shaft (4) located inside the connecting sleeve (2) is in contact with the end of the through-wall shaft (13) located inside the connecting sleeve (2).
7. A gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The wall (1) is formed by pouring the reinforced concrete (14), and the first reinforcing rod (15) is matched with the second reinforcing rod (19) and the reinforced concrete (14).
8. A gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The end of the through-wall shaft (13) located outside the wall (1) is fixedly installed with the drive device inside the opening and closing machine room.
9. A gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The through-wall shaft (13) is rotatably connected to the inside of the connecting sleeve (2) through the second sealed bearing (9).
10. A gate bottom shaft sealing structure for water conservancy projects according to claim 1, characterized in that: The main shaft (4) is rotatably connected to the inside of the connecting sleeve (2) via the sealed bearing (7).