Hydropower steel gate lifting device
By employing a lifting and cleaning assembly that conceals the screw in the screw gate hoist, the problems of screw corrosion and sealing have been solved. This reduces the risk of screw corrosion, improves the cleanliness of the bottom of the gate, extends service life, and enhances sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN HUANQING WATER CONSERVANCY ELECTROMECHANICAL EQUIP CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional screw gate hoists have exposed screws that are prone to rust, affecting their service life, and debris residue at the bottom of the gate affects the sealing performance.
A lifting device for a steel gate in water conservancy and hydropower was designed. It adopts a lifting component and a cleaning component with a hidden screw. The screw is protected by an outer sleeve. The screw and nut are raised and lowered by a drive device. The cleaning component is used to clean the garbage at the bottom of the gate.
It reduces the risk of screw corrosion, extends service life, and effectively cleans debris from the bottom of the gate through the cleaning component, improving sealing performance and reliability.
Smart Images

Figure CN224451542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water conservancy engineering technology, specifically to a water conservancy and hydropower steel gate lifting device. Background Technology
[0002] A sluice gate is a device used to control the opening and closing of waterways. It is commonly used to intercept water flow, control water level, regulate flow rate, and discharge silt and floating debris. The opening and closing of the waterway is achieved by raising and lowering the sluice gate, and a corresponding lifting device is generally used to complete the raising and lowering of the sluice gate.
[0003] The commonly used gate lifting device is the screw hoist. The screw part of the traditional screw hoist is exposed, which has a high risk of corrosion and reduces its service life. In addition, when the gate is opened, some debris will remain at the bottom of the gate as the water flows through the gate opening. This debris will affect the fit between the bottom of the gate and the bottom of the fixed frame, reducing the sealing performance. Utility Model Content
[0004] The purpose of this utility model is to provide a hydraulic and hydropower steel gate lifting device, which has the advantages of reducing the risk of screw corrosion and being able to clean the bottom of the gate.
[0005] The technical solution of this utility model is as follows:
[0006] A hydraulic and hydropower steel gate lifting device includes a fixed frame, a gate, connecting rods, a crossbeam, lifting components, and a cleaning component. The fixed frame is U-shaped and located at the gate opening. Each of the left and right sides of the fixed frame has a vertically oriented sliding groove. The left and right sides of the gate are slidably connected to the sliding grooves. Connecting rods are evenly distributed along the left and right directions at the top of the gate, and the tops of the connecting rods are connected to the bottom of the same crossbeam. Lifting components are located on the left and right sides of the gate opening's discharge side, and the two lifting components are respectively connected to the left and right ends of the crossbeam. A cleaning channel leading to the water storage side is provided at the bottom of the gate opening, and a cleaning component is installed within the cleaning channel. An opening leading to the cleaning channel is provided at the bottom of the fixed frame. The bottom of the gate is located on the opening; the lifting assembly includes a drive device, an outer sleeve, a screw, a nut, a piston, a piston rod, and a connector. The left and right sides of the gate's discharge side each have an outer sleeve running vertically. The bottom end of the outer sleeve has a drive device, the output end of which extends into the outer sleeve and is connected to a screw. A nut is threaded onto the screw, and a piston is mounted on the nut. A piston rod is mounted on the top of the piston. The axes of the piston rod, screw, and outer sleeve coincide. The piston rod has a cavity along its axis. The piston and outer sleeve are in sliding engagement, as are the piston rod and the top end of the outer sleeve. A connector is mounted on the top of the piston rod, and the connector is connected to the left and right ends of the crossbeam.
[0007] Preferably, a sealing guide sleeve is provided at the top end of the outer sleeve, and the sealing guide sleeve is slidably engaged with the piston rod.
[0008] Preferably, a guide ring is coaxially connected to the top end of the screw, and the guide ring slides in fit with the cavity of the piston rod.
[0009] Preferably, the cleaning assembly includes a motor, a rotating rod, a fixed sleeve, and cleaning brushes. The rotating rod is rotatably connected in the left-right direction within the cleaning channel. The rotating rod is located below the opening. One end of the rotating rod is coaxially connected to the drive rod of the motor. The fixed sleeve is fitted onto the rotating rod, and the fixed sleeve is provided with a pair of cleaning brushes symmetrical about the central axis in the left-right direction.
[0010] Preferably, the cleaning channel has a step below the rotating rod for squeezing the cleaning brush, and the top of the step has comb teeth along the left and right direction.
[0011] Preferably, the top of each of the left and right sides of the gate is provided with a buffer pad, and the buffer pad abuts against the bottom of the crossbeam.
[0012] The beneficial technical effects of this utility model are as follows:
[0013] 1. The screw is hidden inside the outer sleeve, reducing the risk of corrosion and extending its service life. The screw is driven to rotate by the drive device. The rotating screw drives the nut connected to it to move up and down along the outer sleeve, thereby driving the piston connected to the nut and the piston rod on the piston to move up and down. The moving piston rod drives the crossbeam to move up and down through the connecting piece. The moving crossbeam drives the gate to move up and down through the connecting rod.
[0014] 2. The cleaning components remove the debris from the bottom of the gate. The falling debris falls into the cleaning channel through the opening and then floats back to the water storage side. Attached Figure Description
[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings.
[0016] Appendix Figure 1 This is the front view of the present invention.
[0017] Appendix Figure 2 This is a front-view cross-sectional view of the present invention.
[0018] Appendix Figure 3 This is a left-side cross-sectional view of the present invention, with the arc-shaped arrow indicating the direction of rotation of the rotating rod.
[0019] Appendix Figure 4 This is a schematic diagram of the internal structure of the lifting assembly.
[0020] In the diagram: 1-Fixed frame, 2-Gate, 3-Connecting rod, 4-Crossbeam, 5-Lifting assembly, 6-Cleaning assembly, 7-Gate, 8-Slide groove, 9-Cleaning channel, 10-Opening, 11-Drive device, 12-Outer sleeve, 13-Screw, 14-Nut, 15-Piston, 16-Piston rod, 17-Connector, 18-Sealing guide sleeve, 19-Guide ring, 20-Motor, 21-Rotating rod, 22-Fixed sleeve, 23-Cleaning brush, 24-Step, 25-Comb teeth, 26-Buffer pad. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0022] Example:
[0023] like Figures 1 to 4 As shown, this embodiment provides a hydraulic and hydropower steel gate lifting device, including a fixed frame 1, a gate 2, a connecting rod 3, a crossbeam 4, a lifting assembly 5, and a cleaning assembly 6. The fixed frame 1 is U-shaped and is located at the gate opening 7. Each of the left and right sides of the fixed frame 1 has a vertically oriented sliding groove 8. The left and right sides of the gate 2 are slidably connected to the sliding groove 8. Connecting rods 3 are evenly distributed along the left and right directions at the top of the gate 2, and the top of the connecting rods 3 is connected to the bottom of the same crossbeam 4. Lifting assemblies 5 are located on the left and right sides of the discharge side of the gate 7, and the two lifting assemblies 5 are respectively connected to the left and right ends of the crossbeam 4. A cleaning channel 9 leading to the water storage side is provided at the bottom of the gate 7, and the cleaning assembly 6 is installed inside the cleaning channel 9. An opening 10 leading to the cleaning channel 9 is provided at the bottom of the fixed frame 1, and the bottom of the gate 2 is located at the opening 10. The lifting assembly 5 includes a drive device 11, an outer sleeve 12, a screw 13, a nut 14, a piston 15, a piston rod 16, and a connector 17. The left and right sides of the gate 7 on the discharge side each have an outer sleeve 12 extending vertically. The bottom end of the outer sleeve has a drive device 11. The output end of the drive device 11 extends into the outer sleeve 12 and is connected to a screw 13. A nut 14 is threaded onto the screw 13. A piston 15 is mounted on the nut 14. A piston rod 16 is mounted on the top of the piston 15. The axes of the piston rod 16, screw 13, and outer sleeve 12 coincide. The piston rod 16 has a cavity along its axis. The piston 15 and outer sleeve 12 slide against each other. The piston rod 16 and the top end of the outer sleeve 12 slide against each other. A connector 17 is mounted on the top of the piston rod 16 and is connected to the left and right ends of the crossbeam 4.
[0024] The screw 13 is concealed within the outer sleeve, reducing the risk of corrosion and extending its service life. The drive device 11 rotates the screw 13, causing the threaded nut 14 to move up and down along the outer sleeve. This, in turn, moves the piston 15 connected to the nut 14 and its piston rod 16 up and down. The moving piston rod 16, via the connector 17, moves the crossbeam 4 up and down, which in turn moves the gate 2 up and down via the connecting rod 3. The cleaning assembly 6 removes debris from the bottom of the gate 2; the falling debris enters the cleaning channel 9 through the opening 10 and then floats back to the water storage side.
[0025] Furthermore, a sealing guide sleeve 18 is provided at the top end of the outer sleeve 12, and the sealing guide sleeve 18 is slidably engaged with the piston rod 16.
[0026] The sealing guide sleeve 18 serves two purposes: first, to enhance the sealing performance of the top end of the outer sleeve 12, reducing the risk of rainfall seeping in from the top end of the outer sleeve 12; and second, to limit the movement direction of the piston rod 16, enhancing the stability of the piston rod 16's lifting and lowering movements. Specifically, a seal is also provided between the bottom end of the outer sleeve 12 and the drive device 11 to improve the sealing performance of the bottom end of the outer sleeve 12, further enhancing the sealing performance of the outer sleeve 12.
[0027] Furthermore, a guide ring 19 is coaxially connected to the top of the screw, and the guide ring 19 slides in fit with the cavity of the piston rod 16.
[0028] The guide ring 19, which slides in conjunction with the cavity of the piston rod 16, stabilizes the top of the screw 13, reducing the risk of the top of the screw 13 wobbling and improving the stability of the rotational movement of the screw 13.
[0029] Furthermore, the cleaning component 6 includes a motor 20, a rotating rod 21, a fixed sleeve 22, and cleaning brushes 23. The rotating rod 21 is rotatably connected in the cleaning channel 9 in the left-right direction. The rotating rod 21 is located below the opening 10. One end of the rotating rod 21 is coaxially connected to the drive rod of the motor 20. The fixed sleeve 22 is fitted on the rotating rod 21. The fixed sleeve 22 is provided with a pair of cleaning brushes 23 symmetrical about the central axis in the left-right direction.
[0030] The motor 20 drives the rotating rod 21 to rotate, and the rotating rod 21 drives the fixed sleeve 22 to rotate. The cleaning brush 23 rotates with the rotation of the fixed sleeve 22. When the rotating cleaning brush 23 rotates to the top, it passes through the opening 10 and wipes off the garbage at the bottom of the gate 2. The falling garbage falls into the cleaning channel 9 through the opening 10 and then floats back to the water storage side.
[0031] Furthermore, the cleaning channel 9 has a step 24 below the rotating rod 21 for squeezing the cleaning brush 23, and the top of the step 24 has comb teeth 25 in the left and right direction.
[0032] As the cleaning brush 23 moves from top to bottom and passes the step 24, the cleaning brush 23, squeezed by the step 24, bends, causing the debris originally attached to the extended cleaning brush 23 to be shaken off due to the deformation of the cleaning brush 23. At the same time, the comb teeth 25 pass through the bristles of the cleaning brush 23, scraping off the remaining debris from the cleaning brush 23, allowing the cleaning brush 23 to get rid of the previously attached debris before turning back to the bottom of the gate 2, thereby improving the efficiency of the cleaning brush 23 in cleaning the bottom of the gate 2.
[0033] Furthermore, each of the tops of the left and right sides of the gate 7 is provided with a buffer pad 26, which abuts against the bottom of the crossbeam 4.
[0034] The impact of the crossbeam 4 during resetting is reduced by the buffer pad 26, thereby reducing the risk of damage to the crossbeam 4.
[0035] Working principle and usage process of this utility model:
[0036] When the waterway is opened, the two lifting components 5 are operated to simultaneously raise the crossbeam 4, thereby raising the gate 2 indirectly connected to the crossbeam 4, allowing water to flow through the gate 7. When the waterway is closed, the two lifting components 5 are operated to simultaneously lower the crossbeam 4, thereby lowering the gate 2 indirectly connected to the crossbeam 4, blocking the water flow in front of the gate 7. The operator starts the motor 20, and the rotating cleaning brush 23 brushes off the debris at the bottom of the gate 2. The debris that falls into the cleaning channel 9 floats back to the water storage side of the gate 7.
[0037] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.
Claims
1. A hydraulic steel gate lifting device, characterized in that: The device includes a fixed frame, a gate, connecting rods, a crossbeam, lifting components, and a cleaning component. The fixed frame is U-shaped and is located at the gate opening. Each of the left and right sides of the fixed frame has a vertically oriented sliding groove. The left and right sides of the gate are slidably connected to the sliding grooves. Connecting rods are evenly distributed along the left and right directions at the top of the gate, and the tops of the connecting rods are connected to the bottom of the same crossbeam. Lifting components are located on the left and right sides of the gate's discharge side, and the two lifting components are respectively connected to the left and right ends of the crossbeam. A cleaning channel leading to the water storage side is located at the bottom of the gate, and a cleaning component is installed within the cleaning channel. An opening leading to the cleaning channel is located at the bottom of the fixed frame, and the bottom of the gate is situated on the opening. The lifting assembly includes a drive device, an outer sleeve, a screw, a nut, a piston, a piston rod, and a connector. Each of the left and right sides of the gate's discharge side has a vertically oriented outer sleeve. The bottom end of the outer sleeve has a drive device, the output end of which extends into the outer sleeve and is connected to a screw. A nut is threaded onto the screw, and a piston is mounted on the nut. A piston rod is located at the top of the piston. The axes of the piston rod, screw, and outer sleeve coincide. The piston rod has a cavity along its axis. The piston and outer sleeve are in sliding engagement, as are the piston rod and the top end of the outer sleeve. A connector is located at the top of the piston rod and is connected to both ends of the crossbeam.
2. The hydraulic steel gate lifting device according to claim 1, characterized in that: A sealing guide sleeve is provided at the top end of the outer tube, and the sealing guide sleeve is slidably engaged with the piston rod.
3. The hydraulic steel gate lifting device according to claim 1, characterized in that: A guide ring is coaxially connected to the top of the screw, and the guide ring slides in fit with the cavity of the piston rod.
4. The hydraulic steel gate lifting device according to claim 1, characterized in that: The cleaning assembly includes a motor, a rotating rod, a fixed sleeve, and cleaning brushes. The rotating rod is rotatably connected in the left-right direction within the cleaning channel. The rotating rod is located below the opening. One end of the rotating rod is coaxially connected to the drive rod of the motor. The fixed sleeve is fitted onto the rotating rod, and the fixed sleeve is provided with a pair of cleaning brushes symmetrical about the central axis in the left-right direction.
5. The hydraulic steel gate lifting device according to claim 4, characterized in that: The cleaning channel has a step below the rotating rod for squeezing the cleaning brush, and the top of the step has comb teeth along the left and right direction.
6. The hydraulic and hydropower steel gate lifting device according to claim 1, characterized in that: Each of the left and right sides of the gate is provided with a buffer pad at the top, and the buffer pad abuts against the bottom of the crossbeam.