Single-drive double-hoisting-point integrated hoist

Abstract

The application discloses a single-drive double-lifting-point integrated opening and closing machine and belongs to the technical field of water conservancy equipment. Mainly comprising a whole frame, the whole frame is fixedly installed on an installation platform through embedded parts, the top surfaces of the two ends of the whole frame are respectively fixedly installed with a main machine assembly and an auxiliary machine assembly, a threaded sleeve assembly is rotatably installed in the inside of a machine base, a screw rod is slidably connected in the machine base and an upper cover, the inside of the threaded sleeve assembly is threadedly connected with the side wall of the screw rod, a transmission sleeve assembly is meshedly connected with the side wall of the threaded sleeve assembly, the bottom end of the screw rod is pinned on the top surfaces of the two sides of a gate body, the side wall of the screw rod is slidably connected in a guide frame, the guide frame is fixedly installed on a two-layer platform through embedded parts, and the power transmission structure of an insertion type transmission shaft, a connecting rod and a double-row chain coupling is adopted. When the power of the main machine is synchronously transmitted to the auxiliary machine, the two screw rods can precisely realize synchronous lifting. The electric device and the transmission sleeve assembly are connected in a three-jaw tooth embedding mode, so that the gate tilting and jamming caused by poor synchronism are solved.

Description

Technical Field

[0001] This application relates to the field of water conservancy equipment technology, specifically a single-drive dual-lifting-point integrated gate hoist. Background Technology

[0002] Existing gate hoists are core equipment in water conservancy projects, water supply and drainage projects, and other fields. They are mainly used to control the opening and closing of gates. Through drive screws and other actuators, the gates are raised and lowered to regulate the flow of water. Functions include opening gates to release floodwater during flood control and drainage, closing gates to store water for irrigation, water level control, and channel navigation regulation. At the same time, they ensure the safe and stable operation of water conservancy facilities and avoid engineering hazards caused by uncontrolled water flow.

[0003] However, existing equipment often uses simple chain drives or rigid shafts to achieve synchronization between the main and auxiliary machines. But chains tend to stretch and loosen over time, and rigid shafts cannot compensate for installation errors, resulting in a lag in power transmission between the main and auxiliary machines. Poor synchronization of the two lifting points directly leads to uneven force on both sides of the gate body. One screw lifts and lowers too quickly, while the other lifts too slowly, causing the gate to tilt. The tilted gate will generate lateral squeezing friction between itself and the gate slot, which will cause the gate to jam. Long-term operation will also cause damage to components such as screw bending, gate body deformation, and gate slot wear. In severe cases, it will lead to equipment shutdown and affect the normal operation of water conservancy projects.

[0004] Furthermore, existing equipment often uses fixed sliding guide sleeves for screw guidance, resulting in sliding friction between the screw and the guide sleeve. Without an adjustable structure, the radial oscillation of long screws during operation cannot be restrained, and the high coefficient of friction leads to severe wear on the guide sleeve and screw surfaces after long-term operation. During on-site installation in water conservancy projects, deviations are likely to occur in the flatness of the second-level platform and the fixing accuracy of embedded parts. However, existing guide structures lack fine-tuning capabilities, causing the gap between the screw and the guide sleeve to be too large or too small, resulting in installation errors that cannot be properly accommodated. Utility Model Content

[0005] The purpose of this invention is to provide a single-drive, dual-suspension-point integrated gate hoist to solve the problems mentioned in the background art.

[0006] The technical solution adopted by this application to solve its technical problem is: A single-drive, dual-suspension-point integrated gate hoist includes an integral frame, which is fixedly installed on an installation platform via embedded parts. A main assembly and a secondary assembly are fixedly installed on the top surfaces of both ends of the integral frame, respectively. The main assembly includes a base, a top cover, a screw, a threaded assembly, and a transmission assembly. The base is fixedly installed on the integral frame, and the top cover is fixedly installed on the top surface of the base via a clamping nut. The threaded assembly is rotatably installed inside the base. The screw is slidably connected between the base and the top cover, and the interior of the threaded assembly is threadedly connected to the side wall of the screw. The transmission assembly meshes with the side wall of the screw assembly. The electric actuator has a three-pronged connection with the transmission kit, and the auxiliary assembly is connected to the internal key of the transmission kit via a connecting rod and an insert-type transmission shaft. The gate body has the bottom end of the screw pinned to both sides of the top surface of the gate body. The side wall of the screw is slidably connected in the guide frame. The guide frame is fixedly installed on the second-floor platform by embedded parts.

[0007] Preferably, the threaded assembly includes an upper flat bearing, a main nut, a large bevel gear, an adjusting washer, and a tapered roller bearing. The inner bottom surface of the machine base is integrally formed with a base, the top surface of the base is embedded and installed with the tapered roller bearing, the main nut is fitted inside the tapered roller bearing, and an adjusting washer is fitted at the gap between the main nut and the tapered roller bearing. The interior of the main nut is threadedly connected to the screw, the side wall of the main nut is connected to the large bevel gear key via a transmission key, and the top of the main nut is fixedly installed inside the machine base via the upper flat bearing.

[0008] Preferably, the transmission assembly includes a small bevel gear, a gear shaft, a tapered bearing, a locking nut, and a transmission pawl. The small bevel gear meshes with the sidewall of the large bevel gear. The gear shaft is connected to the internal key of the small bevel gear. The sidewall of the gear shaft is sleeved with the tapered bearing and is rotatably connected in the base via the tapered bearing. The gear shaft is fixedly installed to the transmission pawl via the locking nut. The transmission pawl is connected to the three-jaw jaws of the electric actuator via a toothed engagement. The insertable transmission shaft is connected to the internal key of the transmission pawl.

[0009] Preferably, the insert-type drive shaft is keyed to one end of the connecting rod, and the other end of the connecting rod is driven to the auxiliary machine assembly via a double-row chain coupling.

[0010] Preferably, the auxiliary assembly has the same structure as the main assembly, and the other screw is threadedly connected to the main nut in the auxiliary assembly. The threads of the two screws are left-handed and right-handed, respectively.

[0011] Preferably, the guide frame includes a support frame, a sealing cap, a guide sleeve, sliding columns, and an adjusting bolt. The bottom of the support frame is fixedly installed on the second-floor platform by embedded parts. The sealing cap is fixedly installed on the top surface of the support frame by a clamping nut. The guide sleeve is installed inside the support frame. Multiple sliding columns are rotatably connected around the inner wall of the guide sleeve. The side wall of the screw is slidably connected to the roller. The adjusting bolt is threaded along the side wall of the support frame, and the tail of the adjusting bolt abuts against the guide sleeve.

[0012] Preferably, the sealing cap has a flared chamfer.

[0013] The beneficial effects of this application are: 1. This technical solution employs a power transmission structure consisting of an insert-type drive shaft, connecting rod, and double-row chain coupling. The insert-type drive shaft is connected to the transmission three-jaw key to ensure lossless power transmission. The double-row chain coupling can compensate for installation errors between the main and auxiliary machines, avoiding power transmission lag. The main nuts and screws of the main and auxiliary machines are designed with left-hand and right-hand threads respectively. When the main machine's power is synchronously transmitted to the auxiliary machine, the two screws can accurately achieve synchronous lifting and lowering. The electric device and transmission kit adopt a three-jaw toothed connection, ensuring that the force on both sides of the gate body is always balanced. This solves the problem of gate tilting and jamming caused by poor synchronization, and avoids chain damage such as screw bending, gate deformation, and gate groove wear. At the same time, it improves the reliable operation capability of the hoist in emergency conditions such as flood control and water storage, and reduces the risk of equipment failure and downtime.

[0014] 2. The technical solution optimizes the overall structure of the guide frame, solving the problems of radial sway, severe wear, and jamming of the long screw. Multiple sliding pins on the inner wall of the guide sleeve form rolling contact with the screw, transforming traditional sliding friction into rolling friction. This significantly reduces the friction coefficient between the screw and the guide sleeve, minimizing surface wear and effectively preventing screw thread scratches. Adjusting bolts around the support frame allow for radial fine-tuning of the guide sleeve position, flexibly adapting to errors caused by the flatness of the second-level platform and the accuracy of embedded parts during installation. This precisely controls the gap between the guide sleeve and the screw, limiting radial sway and ensuring stable vertical lifting. This not only improves the stability of screw operation and the smoothness of opening and closing actions but also reduces the replacement frequency of vulnerable components such as the screw and guide sleeve, lowering maintenance costs in terms of manpower and materials, and extending the overall service life of the gate hoist.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the single-drive dual-lifting-point integrated hoist of this utility model; Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a side view of the single-drive dual-lifting-point integrated hoist of this utility model. Figure 4 This is a schematic diagram of the guide frame of this utility model.

[0017] The reference numerals in the attached figures are as follows: 1. Installation platform; 2. Embedded part; 3. Overall frame; 4. Base; 5. Top cover; 6. Screw; 7. Upper flat bearing; 8. Main nut; 9. Large bevel gear; 10. Adjusting washer; 11. Tapered roller bearing; 12. Base; 13. Small bevel gear; 14. Gear shaft; 15. Tapered bearing; 16. Locking round nut; 17. Transmission three-jaw jack; 18. Insertion type transmission shaft; 19. Electric actuator; 20. Connecting rod; 21. Double row chain coupling; 22. Auxiliary machine assembly; 23. Guide frame; 231. Support frame; 232. Sealing cover; 233. Bell mouth chamfer; 234. Guide sleeve; 235. Sliding column; 236. Adjusting bolt; 24. Gate body; 25. Second-level platform. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0020] Please see Figure 1-4 The embodiments provided by this utility model are as follows: like Figure 1 and Figure 2As shown, a single-drive dual-suspension point integrated hoist includes an integral frame 3, which is fixedly installed on the installation platform 1 by embedded parts 2. The main assembly and the auxiliary assembly 22 are fixedly installed on the top surfaces of both ends of the integral frame 3, respectively. The main assembly includes a base 4, a top cover 5, a screw 6, a threaded assembly and a transmission assembly. The base 4 is fixedly installed on the integral frame 3. The top cover 5 is fixedly installed on the top surface of the base 4 by a clamping nut. The threaded assembly is rotatably installed inside the base 4. The screw 6 is slidably connected in the base 4 and the top cover 5. The inside of the threaded assembly is threadedly connected to the side wall of the screw 6. The transmission assembly is meshed with the side wall of the screw assembly. The overall frame 3 is firmly fixed by the embedded parts 2 to avoid overall displacement or vibration during the operation of the gate hoist. The main assembly and the auxiliary assembly 22 are symmetrically arranged at both ends of the overall frame 3 to ensure the force balance of the two suspension points. The transmission kit receives external power and transmits it to the threaded assembly. When the threaded assembly rotates in the base 4, its internal thread and the screw 6 form a helical transmission pair, which converts the rotational motion of the threaded assembly into the vertical lifting motion of the screw 6, providing power for the opening and closing of the gate.

[0021] Specifically, such as Figure 2 As shown, the threaded assembly includes an upper flat bearing 7, a main nut 8, a large bevel gear 9, an adjusting washer 10, and a tapered roller bearing 11. A base 12 is integrally formed on the inner bottom surface of the machine base 4. The top surface of the base 12 is embedded in the tapered roller bearing 11. The main nut 8 is fitted inside the tapered roller bearing 11, and an adjusting washer 10 is fitted at the gap between the main nut 8 and the tapered roller bearing 11. The interior of the main nut 8 is threadedly connected to the screw 6. The side wall of the main nut 8 is keyed to the large bevel gear 9 via a transmission key. The top of the main nut 8 is fixedly installed inside the machine base 4 via the upper flat bearing 7. The upper and lower ends of the main nut 8 are respectively bidirectionally supported by the upper flat bearing 7 and the tapered roller bearing 11. The upper flat bearing 7 bears the axial pressure of the main nut 8, and the tapered roller bearing 11 bears both radial and axial forces to balance the off-center load when the main nut 8 rotates. The large bevel gear 9 is connected to the main nut 8 through a transmission key. When the large bevel gear 9 is driven to rotate by the transmission kit, it drives the main nut 8 to rotate synchronously through the transmission key. The main nut 8 has a thread that matches the screw 6. When the nut rotates, the thread surface meshes with the thread of the screw 6, and the helix angle generates axial thrust to push the screw 6 to rise and fall vertically. The adjusting washer 10 is fitted between the main nut 8 and the tapered roller bearing 11. By replacing the adjusting washer 10 with different thicknesses, the axial clearance of the main nut 8 can be finely adjusted to ensure smooth rotation of the main nut 8. Specifically, such as Figure 2As shown, the transmission assembly includes a small bevel gear 13, a gear shaft 14, a tapered bearing 15, a locking nut 16, and a transmission chuck 17. The small bevel gear 13 meshes with the side wall of the large bevel gear 9. The gear shaft 14 is internally keyed to the small bevel gear 13. The side wall of the gear shaft 14 is sleeved with the tapered bearing 15 and is rotatably connected in the base 4 via the tapered bearing 15. The gear shaft 14 is fixedly installed to the transmission chuck 17 via the locking nut 16. The small bevel gear 13 and the large bevel gear 9 form a bevel gear meshing pair, converting the horizontal rotational power of the gear shaft 14 into the vertical rotational power of the large bevel gear 9. The gear shaft 14 is rigidly fixed to the small bevel gear 13 by a key connection to adapt to the spatial layout of the base 4. When the gear shaft 14 rotates, it drives the small bevel gear 13 to rotate synchronously. The torque is transmitted to the large bevel gear 9 through bevel gear meshing. The gear shaft 14 is mounted on the base 4 through a tapered bearing 15. The tapered bearing 15 bears the radial and axial forces of the gear shaft 14 to ensure that the gear shaft 14 rotates smoothly. The locking round nut 16 fixes the transmission pawl 17 to the end of the gear shaft 14. The thread preload ensures that there is no relative sliding between the transmission pawl 17 and the gear shaft 14, ensuring the reliability of power transmission.

[0022] The three-jaw teeth of the electric actuator 19 are interlocked with the transmission assembly. The auxiliary assembly 22 is connected to the internal key of the transmission assembly via the connecting rod 20 and the insert-type transmission shaft 18. Specifically, the transmission three-jaw teeth 17 are interlocked with the three-jaw teeth of the electric actuator 19, the insert-type transmission shaft 18 is connected to the internal key of the transmission three-jaw teeth 17, the insert-type transmission shaft 18 is connected to one end of the connecting rod 20 by a key, and the other end of the connecting rod 20 is connected to the auxiliary assembly 22 via a double-row chain coupling 21. It is worth noting that the auxiliary assembly 22 has the same structure as the main assembly. Another screw 6 is threadedly connected to the main nut 8 in the auxiliary assembly 22. The threads of the two screws 6 are left-handed and right-handed, respectively.

[0023] The output end of the electric device 19 has a three-jaw structure, which forms an embedded connection with the transmission three-jaw 17. After the electric device 19 is started, it drives the transmission three-jaw 17 to rotate synchronously through the three-jaw structure, thereby driving the gear shaft 14 to rotate. The insert-type transmission shaft 18 is keyed to the transmission three-jaw 17, which transmits the power of the main transmission assembly to the connecting rod 20. The connecting rod 20 transmits the power to the transmission assembly of the auxiliary assembly 22 through the double-row chain coupling 21, realizing the synchronous transmission of power between the main assembly and the auxiliary assembly 22. When the main power is synchronously transmitted to the auxiliary assembly, the main nuts 8 of the two assemblies rotate simultaneously. Since the threads rotate in opposite directions, the two screws 6 will rise or fall synchronously, realizing the forced synchronization of the two lifting points.

[0024] like Figure 1 and Figure 3As shown, the bottom end of the screw 6 is pinned to both sides of the top surface of the gate body 24. The side wall of the screw 6 is slidably connected in the guide frame 23. The guide frame 23 is fixedly installed on the second-floor platform 25 through the embedded part 2. Figure 4 As shown, the guide frame 23 includes a support frame 231, a sealing cap 232, a guide sleeve 234, sliding columns 235, and an adjusting bolt 236. The bottom of the support frame 231 is fixedly installed on the second-floor platform 25 by a pre-embedded part 2. The sealing cap 232 is fixedly installed on the top surface of the support frame 231 by a clamping nut. The guide sleeve 234 is installed inside the support frame 231. Multiple sliding columns 235 are rotatably connected around the inner wall of the guide sleeve 234. The side wall of the screw 6 is slidably connected to the roller. The adjusting bolt 236 is threaded along the side wall of the support frame 231, and the tail of the adjusting bolt 236 abuts against the guide sleeve 234.

[0025] The bottom ends of the two screws 6 are connected to both sides of the gate body 24 by pins. When the screws 6 rise and fall synchronously, the gate body 24 is opened or closed synchronously through the pins. The guide frame 23 is fixed to the second-floor platform 25 by the embedded part 2, providing intermediate support for the long screws 6. When the screws 6 rise and fall inside the guide sleeve 234, the sliding column 235 on the inner wall of the guide sleeve 234 forms a rolling contact with the side wall of the screws 6, converting sliding friction into rolling friction. The rolling contact of the sliding column 235 greatly reduces the friction coefficient between the screws 6 and the guide sleeve 234, reduces wear, and extends the service life of the screws 6 and the guide sleeve 234. The adjusting bolt 236 around the support frame 231 can radially fine adjust the position of the guide sleeve 234. By turning the adjusting bolt 236, the gap between the guide sleeve 234 and the screws 6 is changed, ensuring that the screws 6 rise and fall smoothly, while limiting the radial swing of the screws 6.

[0026] The sealing cap 232 has a flared chamfer 233. The flared chamfer 233 design of the sealing cap 232 can guide the screw 6 to smoothly enter the guide sleeve 234 when the screw 6 is slightly offset due to installation error or vibration, so as to avoid jamming or scratching the surface of the screw 6.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A single-drive, dual-suspension-point integrated gate hoist, characterized in that: The system includes an overall frame (3), which is fixedly installed on the installation platform (1) by pre-embedded parts (2). The main assembly and the auxiliary assembly (22) are fixedly installed on the top surfaces of the two ends of the overall frame (3). The main assembly includes a base (4), a top cover (5), a screw (6), a threaded assembly and a transmission assembly. The base (4) is fixedly installed on the overall frame (3). The top cover (5) is fixedly installed on the top surface of the base (4) by a clamping nut. The threaded assembly is rotatably installed inside the base (4). The screw (6) is slidably connected in the base (4) and the top cover (5). The inside of the threaded assembly is threadedly connected to the side wall of the screw (6). The transmission assembly is meshed with the side wall of the screw assembly. Electric device (19), the three teeth of the electric device (19) are embeddedly connected to the transmission kit, and the auxiliary assembly (22) is connected to the internal key of the transmission kit through the connecting rod (20) and the insert-type transmission shaft (18); The bottom end of the screw (6) is pinned to both sides of the top surface of the gate body (24). The side wall of the screw (6) is slidably connected in the guide frame (23). The guide frame (23) is fixedly installed on the second-floor platform (25) by the embedded part (2).

2. The single-drive dual-suspension-point integrated gate hoist according to claim 1, characterized in that: The threaded assembly includes an upper flat bearing (7), a main nut (8), a large bevel gear (9), an adjusting washer (10), and a tapered roller bearing (11). The inner bottom surface of the machine base (4) is integrally formed with a base (12). The top surface of the base (12) is embedded and installed with the tapered roller bearing (11). The main nut (8) is fitted inside the tapered roller bearing (11), and an adjusting washer (10) is fitted in the gap between the main nut (8) and the tapered roller bearing (11). The inside of the main nut (8) is threadedly connected to the screw (6). The side wall of the main nut (8) is keyed to the large bevel gear (9) via a transmission key. The top of the main nut (8) is fixedly installed inside the machine base (4) via the upper flat bearing (7).

3. The single-drive dual-suspension-point integrated gate hoist according to claim 2, characterized in that: The transmission assembly includes a small bevel gear (13), a gear shaft (14), a tapered bearing (15), a locking nut (16), and a transmission pawl (17). The small bevel gear (13) meshes with the side wall of the large bevel gear (9). The gear shaft (14) is connected to the internal key of the small bevel gear (13). The side wall of the gear shaft (14) is sleeved with the tapered bearing (15) and is rotatably connected in the base (4) through the tapered bearing (15). The gear shaft (14) is fixedly installed with the transmission pawl (17) through the locking nut (16). The transmission pawl (17) is connected to the three-jaw jaw of the electric device (19) in a toothed engagement manner. The insertable transmission shaft (18) is connected to the internal key of the transmission pawl (17).

4. The single-drive dual-suspension-point integrated gate hoist according to claim 3, characterized in that: The insert-type drive shaft (18) is keyed to one end of the connecting rod (20), and the other end of the connecting rod (20) is driven to the auxiliary machine assembly (22) through a double-row chain coupling (21).

5. The single-drive dual-suspension-point integrated gate hoist according to claim 4, characterized in that: The auxiliary assembly (22) has the same structure as the main assembly. Another screw (6) is threadedly connected to the main nut (8) in the auxiliary assembly (22). The threads of the two screws (6) are left-hand and right-hand respectively.

6. The single-drive dual-suspension-point integrated gate hoist according to claim 1, characterized in that: The guide frame (23) includes a support frame (231), a sealing cap (232), a guide sleeve (234), a sliding column (235), and an adjusting bolt (236). The bottom of the support frame (231) is fixedly installed on the second-floor platform (25) by a pre-embedded part (2). The sealing cap (232) is fixedly installed on the top surface of the support frame (231) by a clamping nut. The guide sleeve (234) is installed inside the support frame (231). A plurality of sliding columns (235) are rotatably connected around the inner wall of the guide sleeve (234). The side wall of the screw (6) is slidably connected to the roller. The adjusting bolt (236) is threaded along the side wall of the support frame (231), and the tail of the adjusting bolt (236) abuts against the guide sleeve (234).

7. The single-drive dual-suspension-point integrated gate hoist according to claim 6, characterized in that: The sealing cap (232) has a flared chamfer (233).

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