Steel gate with locking mechanism
By introducing connecting rods, lifting rings, steel cables, and motor drive components into the steel gate, combined with photoelectric sensors and dual-axis cylinders, the problems of easy aging and unstable contact in the existing steel gate transmission system are solved, achieving stable lifting and locking effects and extending the equipment's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU UNIV OF TECH ENVIRONMENTAL PROTECTION CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-05
AI Technical Summary
Existing steel gate locking mechanisms suffer from problems such as easy aging and slippage of the screw drive system, and unstable contact between the limit tube and the limit groove, resulting in insufficient transmission torque and reduced service life.
The system employs a linkage, lifting ring, steel cable, fixed pulley, and motor drive assembly, combined with photoelectric sensors and dual-axis cylinders, to achieve stable lifting and locking of the gate. The weight of the gate is detected by the detection assembly, which controls the motor to stop, thereby reducing the stress on the steel cable.
This technology enables stable lifting and lowering of steel gates, avoids aging and slippage, extends the service life of steel cables and drums, and improves stability and durability.
Smart Images

Figure CN224199861U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel gate technology, specifically to a steel gate with a locking mechanism. Background Technology
[0002] As the name suggests, a steel sluice gate is a type of steel gate. Steel sluice gates are usually used to open and close the water passages in local hydraulic structures. They can regulate flow, control water level, and transport ships.
[0003] A search revealed existing technology (publication number: CN221345485U), which describes "a steel gate structure with a locking mechanism, including a dam and a gate frame installed on the dam. A steel gate is engaged at the bottom of the gate frame. The steel gate is equipped with a stabilizing component and a locking component. Two supporting tubes are fixed to the rear surface of the steel gate. The top ends of the two supporting tubes are threaded to first screws. The top ends of the two first screws movably penetrate the gate frame and are located above the top of the gate frame. A gantry frame is provided on the top surface of the gate frame. A bearing and a rotating motor are provided on the top wall inside the gantry frame. The lower end of the bearing and the bottom output end of the rotating motor are respectively connected to a first vertical rod and a second vertical rod. A transmission component is connected between the first vertical rod and the second vertical rod, and their bottom ends are respectively connected to the two first screws. By setting the locking component, the locking position of the steel gate can be adjusted according to the water flow, improving the practicality of the device."
[0004] While existing steel gate structures with locking mechanisms can adjust the locking position according to water volume, they still have some shortcomings: The screws, drive belts, and pulleys involved in existing steel gate structures with locking mechanisms are prone to slippage due to belt aging and wear after prolonged use, resulting in insufficient transmission torque and failure to effectively raise and lower the steel gate. Secondly, the limiting tubes and limiting grooves involved cannot be guaranteed to maintain actual contact and force in the vertical direction during locking, potentially causing the screw threads to be constantly affected by the weight of the gate plate, thus reducing their service life. Utility Model Content
[0005] To overcome the shortcomings of the existing technology, a steel gate with a locking mechanism is provided to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, a steel gate with a locking mechanism is provided, comprising: a gate frame, a gate plate slidably connected to the inner side of the gate frame, detection components provided on the inner walls of both sides of the gate frame, and a driving component provided on the top of the gate frame; a locking device provided at the upper end of the gate plate, the locking device including a locking rod, and a connecting rod connected to the upper end of the gate plate, a lifting ring connected to the upper end of the connecting rod, and a steel cable connected to the upper end of the lifting ring; the driving component including a sealed box, and a drum and a motor provided inside the sealed box, with the upper end of the steel cable wound on the drum; the detection component including a locking groove, a buffer block provided inside the locking groove, a pad provided at the lower end of the buffer block, and a pressure sensor at the lower end of the pad.
[0007] Furthermore, the inner sidewall of the gate frame is provided with a guide groove, and the two sidewalls of the gate plate are connected with guide blocks, which are slidably connected in the guide groove.
[0008] Furthermore, a fixed frame is connected to the inner top wall of the gate frame, and a fixed pulley is connected to the lower end of the fixed frame. The steel cable passes around the fixed pulley and through the top of the gate frame to connect with the drum.
[0009] Furthermore, a speed reducer is connected to the output shaft of the motor, and the output shaft of the speed reducer is connected to the central shaft of the drum. At the same time, a main controller is installed on the inner wall of the sealed box.
[0010] Furthermore, the locking device includes an intermediate box fixed to the upper end of the gate plate, and a dual-axis cylinder is provided inside the intermediate box, with guide boxes connected to both sides of the dual-axis cylinder.
[0011] Furthermore, the guide box is equipped with a sliding slider, the outer end of which is connected to a locking rod, the inner end of which is connected to the piston rod of the dual-axis cylinder, and the locking rod slides through the guide box.
[0012] Furthermore, the locking groove is formed in the inner wall of the guide groove, and the inner wall of the locking groove is provided with a mounting hole, and a photoelectric sensor is installed inside the mounting hole. The mounting hole is located on the upper side of the buffer block.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. By utilizing connecting rods, lifting rings, steel cables, fixed pulleys, and fixed rods, the winding and releasing of steel cables are achieved under the drive of a motor, reducer, and drum. Then, the gate is raised and lowered through guide grooves and guide blocks. Therefore, it has a simple and stable structure, stable driving process, large torque transmission, and is not prone to aging and slippage, ensuring the stability and durability of the steel gate's raising and lowering operation.
[0015] 2. Utilizing the locking groove, mounting groove, and photoelectric sensor included in the detection component, when the steel gate is raised and lowered, if the locking rods at both ends of the gate move to the corresponding height of the locking groove, the photoelectric sensor inside the locking groove will detect the locking rod. Then, the main controller will start the dual-axis cylinder, which will push the locking rod outward into the locking groove. The motor will then reverse, causing the steel cable to release downward force until the pressure sensor detects a preset pressure threshold (generally approximated to the weight of the gate). The main controller will then stop the motor again, thereby achieving locking and stable support for the gate, reducing the stress on the steel cable, and extending the service life of the steel cable and drum. Attached Figure Description
[0016] Figure 1 This is a frontal cross-sectional structural diagram of an embodiment of the present utility model.
[0017] Figure 2 This is a cross-sectional structural diagram of the drive component according to an embodiment of the present utility model.
[0018] Figure 3 This is a schematic diagram of the detection component structure according to an embodiment of the present utility model.
[0019] Figure 4 This is a top view of the locking device according to an embodiment of the present invention.
[0020] In the diagram: 1. Gate frame; 11. Guide groove; 12. Gate plate; 13. Guide block; 14. Connecting rod; 15. Lifting ring; 16. Steel cable; 17. Fixed pulley; 18. Fixing frame; 2. Drive assembly; 21. Sealing box; 22. Drum; 23. Reducer; 24. Motor; 25. Main controller; 3. Locking device; 31. Intermediate box; 311. Dual-shaft cylinder; 32. Guide box; 33. Locking rod; 4. Detection assembly; 41. Locking groove; 42. Mounting hole; 43. Photoelectric sensor; 44. Buffer block; 45. Pad; 46. Pressure sensor. Detailed Implementation
[0021] 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.
[0022] Reference Figures 1 to 4As shown, this utility model provides a steel gate with a locking mechanism, including: a gate frame 1, a gate plate 12 slidably connected to the inner side of the gate frame 1, detection components 4 provided on the inner walls of both sides of the gate frame 1, and a drive component 2 provided on the top of the gate frame 1. A locking device 3 is provided at the upper end of the gate plate 12, and the locking device 3 includes a locking rod 33. A connecting rod 14 is connected to the upper end of the gate plate 12, a lifting ring 15 is connected to the upper end of the connecting rod 14, and a steel cable 16 is connected to the upper end of the lifting ring 15. The drive component 2 includes a sealed box 21, and a drum 22 and a motor 24 are provided inside the sealed box 21. The upper end of the steel cable 16 is wound on the drum 22. The detection component 4 includes a locking groove 41, and a buffer block 44 is provided inside the locking groove 41. A pad 45 is provided at the lower end of the buffer block 44, and a pressure sensor 46 is located at the lower end of the pad 45.
[0023] In this embodiment, the gate frame 1, the gate plate 12, the drive assembly 2, the locking device 3, and the detection assembly 4 constitute the main structure of the steel gate with a locking mechanism in this application.
[0024] Among them, the gate 12 is made of steel.
[0025] Among them, the connecting rod 14 has an X-shaped structure when viewed from above and a herringbone structure when viewed from the front.
[0026] Specifically, the buffer block 44 is made of polyurethane, and the pad 45 is made of metal.
[0027] Specifically, the pressure sensor 46 is in a non-energized state when the motor 24 is not started, and the pressure sensor 46 has different numbers above and below, so that the pressure sensor with the correct number can be controlled to be energized individually during use.
[0028] Secondly, the detection threshold of the pressure sensor 46 is set to approximately the weight of the gate 12, so that when the steel cable 16 is released, it can detect in time whether the weight of the gate 12 is fully supported. When the threshold is reached, the motor 24 can be controlled to stop running.
[0029] like Figures 1 to 4In the gate frame 1, a guide groove 11 is provided on the inner side wall, and guide blocks 13 are connected to the two side walls of the gate plate 12. The guide blocks 13 are slidably connected in the guide groove 11. A fixed frame 18 is connected to the inner top wall of the gate frame 1, and a fixed pulley 17 is connected to the lower end of the fixed frame 18. A steel cable 16 passes around the fixed pulley 17 and through the top of the gate frame 1 to connect with the drum 22. A reducer 23 is connected to the output shaft of the motor 24, and the output shaft of the reducer 23 is connected to the central shaft of the drum 22. A main controller 25 is installed on the inner wall of the sealing box 21. The locking device 3 includes a device fixed to the gate plate. The upper part of the 12 has an intermediate box 31, and the intermediate box 31 is equipped with a dual-axis cylinder 311. The two sides of the dual-axis cylinder 311 are connected to guide boxes 32. The guide box 32 is equipped with a sliding slider. The outer end of the slider is connected to the locking rod 33, and the inner end of the slider is connected to the piston rod of the dual-axis cylinder 311. The locking rod 33 slides through the guide box 32. The locking groove 41 is opened in the inner groove wall of the guide groove 11. The inner groove wall of the locking groove 41 is provided with a mounting hole 42. The mounting hole 42 is equipped with a photoelectric sensor 43. The mounting hole 42 is located on the upper side of the buffer block 44.
[0030] Specifically, the fixed pulleys 17 are set in two sets at different heights, and the steel cable 16 passes over the upper side of the fixed pulley 17 at the higher position, then passes over the lower side of the fixed pulley 17 at the lower position, and then slides through the top of the gate frame 1, thereby enabling the selection of a motor 24 with low torque output and reducing equipment costs.
[0031] Specifically, the photoelectric sensor 43 is also assigned a group number and corresponds to the pressure sensor 46 in the same locking slot 41. That is, the photoelectric sensor 43 and the pressure sensor 46 in the same locking slot 41 are simultaneously energized and de-energized. When the locking rod 33 moves to the corresponding height, the gate 12 can be stopped from lifting by connecting the photoelectric sensor 43 to the motor 24.
[0032] In use, the detection components, including locking grooves, mounting grooves, and photoelectric sensors, ensure that when the steel gate is raised or lowered, the locking rods at both ends of the gate move to the corresponding height of the locking groove. At this point, the photoelectric sensor inside the locking groove detects the locking rod, and then the main controller starts the dual-axis cylinder, which pushes the locking rod outward into the locking groove. Then, the motor reverses, causing the steel cable to release downward force until the pressure sensor detects a preset pressure threshold (generally approximated to the weight of the gate). Then, the main controller stops the motor again, thereby achieving locking and stable support for the gate, reducing the stress on the steel cable, and extending the service life of the steel cable and drum.
[0033] The steel gate with locking mechanism of this utility model can effectively solve the problems mentioned in the background technology. It achieves structural stability, stable operation, long service life and easy protection of the drive components after locking, based on the existing steel gate technology with locking mechanism.
[0034] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A steel gate with a locking mechanism, comprising: A gate frame (1) is characterized in that: a gate plate (12) is slidably connected to the inner side of the gate frame (1), and detection components (4) are provided on the inner walls of both sides of the gate frame (1), and a driving component (2) is provided on the top of the gate frame (1). A locking device (3) is provided at the upper end of the gate plate (12), and the locking device (3) includes a locking rod (33). A connecting rod (14) is connected to the upper end of the gate plate (12), and a lifting ring (15) is connected to the upper end of the connecting rod (14). The upper end of the drive assembly (2) is connected to a steel cable (16). The drive assembly (2) includes a sealed box (21), and the inside of the sealed box (21) is provided with a drum (22) and a motor (24). The upper end of the steel cable (16) is wound on the drum (22). The detection assembly (4) includes a locking groove (41), and the inside of the locking groove (41) is provided with a buffer block (44). The lower end of the buffer block (44) is provided with a pad (45), and a pressure sensor (46) is located at the lower end of the pad (45).
2. A steel gate with a locking mechanism according to claim 1, characterized in that, The inner sidewall of the gate frame (1) is provided with a guide groove (11), and the two sidewalls of the gate plate (12) are connected with guide blocks (13), and the guide blocks (13) are slidably connected in the guide groove (11).
3. A steel gate with a locking mechanism according to claim 1, characterized in that, The inner top wall of the gate frame (1) is connected to a fixed frame (18), and the lower end of the fixed frame (18) is connected to a fixed pulley (17). The steel cable (16) passes around the fixed pulley (17) and through the top of the gate frame (1) to connect with the drum (22).
4. A steel gate with a locking mechanism according to claim 1, characterized in that, The output shaft of the motor (24) is connected to a reducer (23), and the output shaft of the reducer (23) is connected to the central shaft of the drum (22). Meanwhile, a main controller (25) is installed on the inner wall of the sealed box (21).
5. A steel gate with a locking mechanism according to claim 1, characterized in that, The locking device (3) includes an intermediate box (31) fixed to the upper end of the gate (12), and a double-axis cylinder (311) is provided inside the intermediate box (31), and guide boxes (32) are connected to both sides of the double-axis cylinder (311).
6. A steel gate with a locking mechanism according to claim 5, characterized in that, The guide box (32) is equipped with a sliding block inside, and the outer end of the slider is connected to the locking rod (33). The inner end of the slider is connected to the piston rod of the dual-axis cylinder (311), and the locking rod (33) slides through the guide box (32).
7. A steel gate with a locking mechanism according to claim 1, characterized in that, The locking groove (41) is opened in the inner wall of the guide groove (11), and the inner wall of the locking groove (41) is provided with a mounting hole (42), and a photoelectric sensor (43) is installed inside the mounting hole (42). At the same time, the mounting hole (42) is located on the upper side of the buffer block (44).
Citation Information
Patent Citations
Steel gate structure with locking mechanism
CN221345485U