Novel planetary driving hoisting mechanism

Abstract

The utility model relates to the technical field of hoisting machinery, and discloses a novel planet-driven hoisting mechanism which comprises a winding drum, a top cover is fixedly connected to the top end of the winding drum, a center shaft is rotatably connected to the bottom of the top cover, a planet carrier is fixedly connected to the bottom end of the center shaft, and a plurality of planet gears are fixedly connected to the bottom of the planet carrier. And a sun gear is connected to the inward side of the planetary gear in a meshed mode, a gear ring is connected to the outward side of the planetary gear in a meshed mode, a transmission shaft is fixedly connected to the bottom end of the sun gear, a sliding disc is fixedly connected to the top of the gear ring, and a fixed disc is fixedly connected to the upper middle side of the outer wall of the center shaft. According to the utility model, the hydraulic rod is started to push the positioning disc to move upwards or downwards, so that the rotating rod is pulled to rotate, the purpose of adjusting different output torques by a single planetary gear is achieved, the practicability is improved, and the production cost and the structural complexity are reduced.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery technology, and in particular to a novel planetary drive lifting mechanism. Background Technology

[0002] The hoisting structure is a key part of lifting machinery responsible for lifting and lowering heavy objects. Its design and working principle are crucial to the performance and safety of the crane. Its main components are: an electric motor that serves as the power source for the hoisting structure and is responsible for providing the necessary power; a reducer that converts the high speed of the electric motor into the low speed and high torque required by the hoisting mechanism; and wire ropes or chains wound on a drum, which is responsible for winding and releasing the wire ropes and chains, and quickly braking the drum when the electric motor stops to prevent the heavy objects from falling freely.

[0003] Existing technologies for speed reducers include cylindrical gear reducers suitable for medium torque and speed, planetary gear reducers with high efficiency, compact structure, and low noise, and worm gear reducers suitable for high-speed, low-torque applications. Worm gear reducers have lower efficiency and are generally not used in the main lifting structure of cranes. Cylindrical gear reducers are large and heavy, making cranes cumbersome. Therefore, planetary gear reducers are increasingly widely used in the main lifting structure of cranes. However, existing planetary gear driven lifting structures often employ multi-stage speed reduction, cascading multiple planetary gear reducers. Each reducer amplifies a portion of the torque to achieve high torque output. This structure is complex, resulting in a bulky and cumbersome lifting structure, reducing practicality. Furthermore, after prolonged use, the transmission components of the lifting structure heat up. If not cooled in time, this can damage gears and bearings, reduce structural strength, shorten service life, and decrease safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a novel planetary drive lifting mechanism, which aims to improve the existing technology that often uses multi-stage speed reduction by cascading multiple planetary gear reducers to increase torque. However, this results in a complex structure that is bulky and cumbersome, reducing its practicality.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a novel planetary drive lifting mechanism, including a drum, a top cover fixedly connected to the top of the drum, a central shaft rotatably connected to the bottom of the top cover, a planetary carrier fixedly connected to the bottom of the central shaft, multiple planetary gears fixedly connected to the bottom of the planetary carrier, a sun gear meshing with the inward side of each planetary gear, a gear ring meshing with the outward side of each planetary gear, a drive shaft fixedly connected to the bottom of the sun gear, and a sliding disc fixedly connected to the top of the gear ring. A fixed plate is fixedly connected to the upper side of the outer wall of the mandrel. Multiple rotating disks are rotatably connected to the middle of the outer wall of the mandrel. Multiple hydraulic rods are fixedly connected to the outer side of each rotating disk. A positioning plate is fixedly connected to the top of each hydraulic rod. Multiple rotating rods are rotatably connected to the outer wall of the positioning plate. A sliding groove is provided on the inner side of both the fixed plate and the sliding plate. A sliding block is slidably connected to the inner wall of the sliding groove. Multiple limiting blocks are fixedly connected to the inner wall of the drum. A cooling structure is fixedly connected to the outer wall of the gear ring. The cooling structure is used to cool the mechanism.

[0006] As a further description of the above technical solution:

[0007] The cooling structure includes a hollow cooling sleeve, the outer wall of which is fixedly connected to the outer wall of the toothed ring, the inner wall of which is connected to a connecting pipe two, the inner wall of which is connected to a liquid box two, the outer wall of which is fixedly connected to a cooling pipe, the inner wall of which is connected to a connecting pipe one, the other end of which is connected to a liquid box one, and the outer wall of the rotating disk one is provided with multiple through grooves.

[0008] As a further description of the above technical solution:

[0009] A rubber pad is fixedly connected to the inward side of the limiting block, and an oil injection hole is opened on the top of the top cover.

[0010] As a further description of the above technical solution:

[0011] The bottom end of the drive shaft is fixedly connected to a second mounting plate, and the inner wall of the second mounting plate is provided with a second sliding groove.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the second slide is slidably connected with multiple locking blocks, and multiple springs are fixedly connected to the inward side of each locking block.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the second mounting plate is provided with a hollow plate, the inner wall of the hollow plate is slidably connected to the outer wall of the second mounting plate, and the outer wall of the hollow plate is provided with multiple slots.

[0016] As a further description of the above technical solution:

[0017] The bottom of the hollow disc is fixedly connected to a mounting column, and the outer wall of the mounting column is provided with multiple mounting grooves.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the drum is provided with multiple winding grooves, and the multiple sliding blocks are all slidably connected at the same horizontal height.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by activating the hydraulic rod, the positioning plate is pushed up or down, thereby pulling the rotating rod to rotate, which in turn pulls the sliding block to slide in the slide groove, so that it can switch whether it is engaged with the limit block, thereby achieving the purpose of adjusting different output torques with a single planetary gear, improving practicality, reducing production costs and structural complexity.

[0022] 2. In this utility model, when the gear ring rotates, it can drive the hollow cooling sleeve and the components connected to it to rotate together, so that the liquid inside can be thrown out from the hollow cooling sleeve to the connecting pipe two, enter the liquid box two and be cooled by the cooling pipe, and then enter the liquid box one through the connecting pipe one, thereby achieving the purpose of cooling the internal structure, extending the service life and improving safety. Attached Figure Description

[0023] Figure 1 This is a front perspective view of the novel planetary drive lifting mechanism proposed in this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A;

[0025] Figure 3 This is a side view of the novel planetary-driven lifting mechanism proposed in this utility model;

[0026] Figure 4 This is a cross-sectional view of the fixed disc of the novel planetary drive lifting mechanism proposed in this utility model.

[0027] Figure 5 This is a cross-sectional view of the central axis of the novel planetary drive lifting mechanism proposed in this utility model;

[0028] Figure 6 for Figure 5 Enlarged view of point B;

[0029] Figure 7 This is a partial structural schematic diagram of the novel planetary drive lifting mechanism proposed in this utility model;

[0030] Figure 8 This is a partial structural exploded view of the novel planetary-driven lifting mechanism proposed in this utility model.

[0031] Legend:

[0032] 1. Drum; 2. Cooling structure; 201. Liquid box one; 202. Liquid box two; 203. Connecting pipe one; 204. Connecting pipe two; 205. Cooling pipe; 206. Hollow cooling sleeve; 207. Through groove; 3. Rotating disk one; 4. Positioning disk; 5. Rotating rod; 6. Slide groove one; 7. Fixed disk; 8. Hydraulic rod; 9. Sliding block; 10. Sliding disk; 11. Limiting block; 12. Drive shaft; 13. Planetary carrier; 14. Planetary gear; 15. Gear ring; 16. Sun gear; 17. Slide groove two; 18. Locking block; 19. Locking groove; 20. Mounting groove; 21. Mounting column; 22. Hollow disk; 23. Spring; 24. Mounting disk two; 25. Rubber pad; 26. Winding groove; 27. Top cover; 28. Oil injection hole; 29. ​​Central shaft. Detailed Implementation

[0033] 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.

[0034] Please see the appendix Figure 1 - Appendix Figure 3This utility model provides an embodiment of a novel planetary drive lifting mechanism, comprising a drum 1, with a top cover 27 fixedly connected to the top of the drum 1. The drum 1 is used for winding steel wire. A central shaft 29 is rotatably connected to the bottom of the top cover 27. A planetary carrier 13 is fixedly connected to the bottom of the central shaft 29. Multiple planetary gears 14 are fixedly connected to the bottom of the planetary carrier 13. The top cover 27 is used to seal the drum 1. A sun gear 16 is meshed with the inward side of the planetary gears 14, and a gear ring 15 is meshed with the outward side of the planetary gears 14. The sun gear 16, gear ring 15, and planetary gears 14 can transmit rotation to each other. A drive shaft 12 is fixedly connected to the bottom of the sun gear 16, and a sliding disc 10 is fixedly connected to the top of the gear ring 15. The upper part of the outer wall of the central shaft 29 is fixed... The device is connected to a fixed disk 7. The transmission shaft 12 is used for input rotation. Multiple rotating disks 3 are rotatably connected to the middle of the outer wall of the central shaft 29. Multiple hydraulic rods 8 are fixedly connected to the outer side of the rotating disks 3. The central shaft 29 is used for output rotation. The top of the hydraulic rods 8 is fixedly connected to a positioning disk 4. Multiple rotating rods 5 are rotatably connected to the outer wall of the positioning disk 4. The hydraulic rods 8 are used to push the positioning disk 4. The fixed disk 7 and the sliding disk 10 are both provided with a sliding groove 6 on their inner side. A sliding block 9 is slidably connected to the inner wall of the sliding groove 6. Multiple limiting blocks 11 are fixedly connected to the inner wall of the drum 1. The sliding groove 6 is used to provide guidance for the movement of the sliding block 9. A cooling structure 2 is fixedly connected to the outer wall of the gear ring 15. The cooling structure 2 is used to cool the mechanism. The limiting block 11 is used to limit the movement of the limiting block 11.

[0035] Specifically, the upper end of the drum 1 is fixedly connected to the top cover 27, ensuring the stability of the structure. The lower end of the top cover 27 is rotatably connected to the central shaft 29, enabling the mechanism to operate flexibly. The lower end of the central shaft 29 is fixedly connected to the planetary carrier 13, providing power support to the mechanism. The inner side of the planetary gear 14 meshes with the sun gear 16, and the outer side meshes with the gear ring 15, ensuring effective power transmission. The hydraulic rod 8 enables precise control of the mechanism. The design of the rotating rod 5 makes the mechanism operate more efficiently. The inner wall of the drum 1 is fixedly connected to multiple limit blocks 11, which enable the rotation of the mechanism to be transmitted.

[0036] Please see the appendix Figure 4 - Appendix Figure 6The cooling structure 2 includes a hollow cooling sleeve 206. The outer wall of the hollow cooling sleeve 206 is fixedly connected to the outer wall of the toothed ring 15. The inner wall of the hollow cooling sleeve 206 is connected to a connecting pipe 204. The hollow cooling sleeve 206 is used to cool the toothed ring 15. The inner wall of the connecting pipe 204 is connected to a liquid box 202. The outer wall of the liquid box 202 is fixedly connected to a cooling pipe 205. The cooling pipe 205 is used to cool the liquid in the liquid box 202. The inner wall of the liquid box 202 is connected to a connecting pipe 203. The other end of the connecting pipe 203 is connected to a liquid box 201. The outer wall of the rotating disk 3 has multiple through slots 207. The connecting pipe 203 is used to connect the liquid box 202 and the liquid box 201.

[0037] Specifically, the outer wall of the hollow cooling sleeve 206 is tightly connected to the outer wall of the toothed ring 15 through a fixed connection, ensuring the stability of the structure and the efficiency of heat transfer. The inner wall of the connecting pipe 204 is connected to the liquid box 202, which serves as a storage container for the cooling medium. The cooling pipe 205 is used to cool the liquid in the liquid box 202. The liquid box 201 also serves as a storage container for the cooling medium, and its connection with the connecting pipe 203 ensures the circulation of the cooling medium. The through groove 207 is used to ensure ventilation within the structure.

[0038] Please see the appendix Figure 3 - Appendix Figure 5 The bottom of the hollow disk 22 is fixedly connected to the mounting post 21. The outer wall of the mounting post 21 is provided with multiple mounting grooves 20. The mounting post 21 is used to connect to the motor. The outer wall of the second mounting disk 24 is provided with the hollow disk 22. The inner wall of the hollow disk 22 is slidably connected to the outer wall of the second mounting disk 24. The mounting grooves 20 are used to engage with the output end of the motor. The outer wall of the hollow disk 22 is provided with multiple slots 19. The inner wall of the second sliding groove 17 is slidably connected with multiple blocks 18. Multiple springs 23 are fixedly connected to the inward side of the blocks 18. The slots 19 are used to engage with the blocks 18. The bottom end of the drive shaft 12 is fixedly connected to the second mounting disk 24. The inner wall of the second mounting disk 24 is provided with the second sliding groove 17. The springs 23 are used to push the blocks 18 to reset.

[0039] Specifically, the spring 23 provides the necessary elastic force to the locking block 18 so that it can quickly return to its original position after being compressed. The bottom end of the drive shaft 12 is connected to the second mounting plate 24 by a fixed method, ensuring a stable connection between the drive shaft 12 and the second mounting plate 24. The locking block 18 can be inserted into the slot 19, thereby limiting the connection between the hollow plate 22 and the second mounting plate 24.

[0040] Please see the appendix Figure 6 - Appendix Figure 8A rubber pad 25 is fixedly connected to the inner side of the limiting block 11. An oil injection hole 28 is opened on the top of the top cover 27. The rubber pad 25 is used to increase the friction of the outer wall of the limiting block 11. Multiple winding grooves 26 are opened on the outer wall of the drum 1. Multiple sliding blocks 9 are slidably connected at the same horizontal height. The oil injection hole 28 is used to help the user inject lubricating oil into the top cover 27.

[0041] Specifically, the oil injection hole 28 is provided to facilitate the user to inject lubricating oil into the mechanical parts inside the top cover 27. Regular lubrication can reduce wear between mechanical parts. The cable winding groove 26 is designed to accommodate and guide the orderly arrangement of cables, ensuring that the cables are neat and orderly on the drum 1. The sliding blocks 9 are all designed to slide at the same horizontal height. This design can ensure the synchronicity and consistency of the sliding blocks 9 during movement, thereby improving the accuracy and reliability of the entire mechanical system.

[0042] Working principle: When the drive shaft 12 drives the sun gear 16 to rotate, it will simultaneously drive the gear ring 15 to rotate and the planetary gear 14 to revolve. The planetary carrier 13 will output the torque of the planetary gear 14 to the central shaft 29. When low torque is required, the hydraulic rod 8 on the lower side is activated to push the rotating disk 3 downward, thereby pushing the rotating rod 5 to rotate. This allows the sliding block 9 on the lower side to slide in the groove 6 and then engage in the limiting block 11. At this time, the rotation of the gear ring 15 can drive the drum 1 to rotate, causing the wire of the lifting mechanism to be rotated. When high torque is required, the hydraulic rod 8 on the lower side is pulled upward, cutting off the torque output of the gear ring 15. Then, the hydraulic rod 8 on the upper side is activated to push the rotating disk 3 upward, causing the rotating rod 5 to rotate. This pushes the sliding block 9 in the fixed disk 7 to slide out along the groove 6 and then insert into the limiting block 11, so that the central shaft 29 can drive the fixed disk 7 to rotate and transmit the torque to the drum 1 to rotate.

[0043] When the drum 1 is driven to rotate, the toothed ring 15 also rotates. Its rotation causes the liquid in the hollow cooling sleeve 206 to slosh inside, and then flows into the liquid box 202 through the connecting pipe 204. The liquid is cooled by the cooling pipe 205, and then flows into the connecting pipe 203 as it rotates. It then flows into the liquid box 201 and is cooled again before flowing back into the hollow cooling sleeve 206. If the drum 1 rotates in the opposite direction, the liquid will also flow in the opposite direction.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel planetary-driven lifting mechanism, comprising a drum (1), characterized in that: A top cover (27) is fixedly connected to the top of the drum (1). A central shaft (29) is rotatably connected to the bottom of the top cover (27). A planetary carrier (13) is fixedly connected to the bottom of the central shaft (29). Multiple planetary gears (14) are fixedly connected to the bottom of the planetary carrier (13). A sun gear (16) is meshed with the inward side of the planetary gears (14). A gear ring (15) is meshed with the outward side of the planetary gears (14). A drive shaft (12) is fixedly connected to the bottom of the sun gear (16). A sliding disc (10) is fixedly connected to the top of the gear ring (15). A fixed disc is fixedly connected to the upper middle side of the outer wall of the central shaft (29). 7) A plurality of rotating disks (3) are rotatably connected to the middle of the outer wall of the central shaft (29). A plurality of hydraulic rods (8) are fixedly connected to the outer side of the rotating disks (3). A positioning disk (4) is fixedly connected to the top of the hydraulic rods (8). A plurality of rotating rods (5) are rotatably connected to the outer wall of the positioning disk (4). A sliding groove (6) is provided on the inner side of both the fixed disk (7) and the sliding disk (10). A sliding block (9) is slidably connected to the inner wall of the sliding groove (6). A plurality of limiting blocks (11) are fixedly connected to the inner wall of the drum (1). A cooling structure (2) is fixedly connected to the outer wall of the toothed ring (15). The cooling structure (2) is used to cool the mechanism.

2. The novel planetary-driven lifting mechanism according to claim 1, characterized in that: The cooling structure (2) includes a hollow cooling sleeve (206), the outer wall of which is fixedly connected to the outer wall of the toothed ring (15), the inner wall of which is connected to a connecting pipe two (204), the inner wall of which is connected to a liquid box two (202), the outer wall of which is fixedly connected to a cooling pipe (205), the inner wall of which is connected to a connecting pipe one (203), the other end of which is connected to a liquid box one (201), and the outer wall of the rotating disk one (3) is provided with multiple through grooves (207).

3. The novel planetary-driven lifting mechanism according to claim 1, characterized in that: A rubber pad (25) is fixedly connected to the inward side of the limiting block (11), and an oil injection hole (28) is opened on the top of the top cover (27).

4. The novel planetary-driven lifting mechanism according to claim 1, characterized in that: The bottom end of the drive shaft (12) is fixedly connected to the mounting plate two (24), and the inner wall of the mounting plate two (24) is provided with a sliding groove two (17).

5. The novel planetary-driven lifting mechanism according to claim 4, characterized in that: The inner wall of the second slide (17) is slidably connected with multiple locking blocks (18), and multiple springs (23) are fixedly connected to the inward side of the locking blocks (18).

6. The novel planetary-driven lifting mechanism according to claim 5, characterized in that: The outer wall of the second mounting plate (24) is provided with a hollow plate (22), the inner wall of the hollow plate (22) is slidably connected to the outer wall of the second mounting plate (24), and the outer wall of the hollow plate (22) is provided with multiple slots (19).

7. The novel planetary-driven lifting mechanism according to claim 6, characterized in that: The bottom of the hollow disc (22) is fixedly connected to a mounting post (21), and the outer wall of the mounting post (21) is provided with multiple mounting grooves (20).

8. The novel planetary-driven lifting mechanism according to claim 1, characterized in that: The outer wall of the drum (1) is provided with multiple winding grooves (26), and the multiple sliding blocks (9) are slidably connected at the same horizontal height.

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