A hydraulic winch direction switching structure

Abstract

This utility model provides a hydraulic winch direction-changing and switching structure, including a housing, a planetary reduction gear assembly, a drum, and a support. The planetary reduction gear assembly is disposed inside the housing, while the support and drum are disposed outside the housing. The planetary reduction gear assembly includes a first gear set, a second gear set, and a ratchet reversing assembly. The input end of the first gear set is connected to the hydraulic motor, and the output end of the first gear set is connected to the input end of the second gear set. The drum is disposed at the output end of the second gear set. The ratchet reversing assembly is disposed between the first gear set and the second gear set. The ratchet reversing assembly is used to directly connect the output end of the first gear set to the drum. By setting the ratchet reversing assembly, direct connection and switching control between the first gear set and the drum are realized, skipping the second gear set, thereby achieving winch speed regulation without changing the speed of the hydraulic motor.

Description

Technical Field

[0001] This utility model relates to winches, and more particularly to a hydraulic winch direction-switching structure. Background Technology

[0002] Currently, Chinese patent CN220578794U discloses a short-wheelbase hydraulic winch, including a hydraulic motor, a balance valve, a brake, a planetary reduction mechanism, a drum, and a support. The hydraulic motor is directly fixed to the brake, and the brake is fixed to the support. The brake and the planetary reduction mechanism are located inside the drum. In the planetary reduction mechanism, the planetary gears mesh with the planetary internal gear ring for transmission. The planetary internal gear ring and the drum are an integral structure.

[0003] The aforementioned patent still has shortcomings. The planetary reduction mechanism reduces the input speed of the hydraulic motor. In some scenarios where a heavy object is hoisted from the lower side to the higher side, the winch usually lowers the empty hook. The only way to quickly lower the empty hook is to increase the speed of the hydraulic motor. The speed of the hydraulic motor is related to the output pressure of the oil pump station. When multiple devices use the same oil pump station, the output pressure of the oil pump station cannot be changed at will, which can easily lead to low efficiency. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a hydraulic winch direction switching structure, which solves the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a hydraulic winch reversing and switching structure, including a housing, a planetary reduction assembly, a drum, and a support. The planetary reduction assembly is disposed inside the housing, and the support and the drum are disposed outside the housing. The planetary reduction assembly includes a first gear set, a second gear set, and a ratchet reversing assembly. The input end of the first gear set is connected to a hydraulic motor, and the output end of the first gear set is connected to the input end of the second gear set. The drum is disposed at the output end of the second gear set, and the ratchet reversing assembly is disposed between the first gear set and the second gear set. The ratchet reversing assembly is used to directly connect the output end of the first gear set to the drum.

[0006] Preferably, the first gear set includes a sun gear, a planet gear, a planet carrier, and a ring gear, and the second gear set includes a sun gear, a planet gear, a planet carrier, and a ring gear. The first sun gear is connected to a hydraulic motor, and the second planet carrier is connected to a drum.

[0007] Preferably, the ratchet reversing assembly includes a locking element one, a locking element two, and a one-way rotating element. The locking element one is used to control whether the gear ring one and gear ring two rotate, the locking element two is used to control whether the sun gear two rotates, and the one-way rotating element is disposed between the gear ring one and the planet carrier two.

[0008] Preferably, the unidirectional rotating component includes a ratchet disk one disposed on one side of the gear ring, a ratchet disk two disposed on the other side of the planetary carrier, and a spherical ratchet. The ratchet disk one has a ratchet groove, and the ratchet disk two has a sliding hole. The spherical ratchet includes a ball head and a connecting post. The ball head is disposed in the ratchet groove, and the connecting post is slidably disposed in the sliding hole. A spring is also disposed between the connecting post and the bottom of the sliding hole. When the ratchet disk one rotates clockwise, it drives the ratchet disk two to rotate. When the ratchet disk one rotates counterclockwise, it cannot drive the ratchet disk two to rotate.

[0009] Preferably, the locking element one includes a plurality of top blocks one and a hydraulic flow channel formed in the housing, wherein when the hydraulic flow channel is connected to hydraulic oil, it drives all the top blocks one to press against the gear ring one and the gear ring two.

[0010] Preferably, the second locking element includes a hydraulic cylinder and a second top block, wherein the second top block is disposed at the output end of the hydraulic cylinder.

[0011] Preferably, the planetary carrier 2 has a through hole in the middle, the top block 2 is slidably disposed in the through hole, the end face of the top block 2 has an inclined top surface 1, the side end of the sun gear 2 has an inclined top surface 2, and the inclined top surface 1 and the inclined top surface 2 are fitted together and pressed tightly.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a ratchet reversing component, the direct connection and switching control between gear set one and the drum is realized, skipping gear set two, thereby achieving speed regulation of the winch without changing the speed of the hydraulic motor; 2. By setting up a ratchet reversing assembly, the direction of the drum is switched while adjusting the drum speed. This ensures that both gear set one and gear set two participate in deceleration when pulling up the goods, so that the winch has sufficient power. When releasing the hook downwards, only gear set one participates in deceleration. 3. Through the coordinated action of locking component one and locking component two, this structure can precisely control the rotation state of gear ring one, gear ring two and sun gear two. Combined with the mechanical interlocking design of ratchet disc and spherical ratchet in the unidirectional rotating component, it ensures the stability and unidirectionality of power transmission during the direction adjustment process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a cross-sectional schematic diagram of an embodiment; Figure 3 This is a partial cross-sectional view of the planetary deceleration assembly; Figure 4 This is a cross-sectional view of locking component one; Figure 5 This is a schematic diagram of a unidirectional rotating component.

[0014] Reference numerals: 1. Housing; 2. Planetary reduction assembly; 3. Drum; 4. Support; 5. Gear set one; 6. Gear set two; 7. Ratchet reversing assembly; 8. Sun gear one; 9. Planet gear one; 10. Planet carrier one; 11. Gear ring one; 12. Sun gear two; 13. Planet gear two; 14. Planet carrier two; 15. Gear ring two; 16. Locking element one; 17. Locking element two; 18. One-way rotating element; 19. Ratchet disc one; 20. Ratchet disc two; 21. Spherical ratchet; 22. Racket groove; 23. Sliding hole; 24. Ball head; 25. Connecting column; 26. Spring; 27. Hydraulic flow channel; 28. Top block one; 29. ​​Hydraulic cylinder; 30. Top block two; 31. Sloping top surface one; 32. Sloping top surface two. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0016] A hydraulic winch reversing and switching structure includes a housing 1, a planetary reduction gear assembly 2, a drum 3, and a support 4. The planetary reduction gear assembly 2 is disposed inside the housing 1, and the support 4 and the drum 3 are disposed outside the housing 1. The planetary reduction gear assembly 2 includes a first gear set 5, a second gear set 6, and a ratchet reversing assembly 7. The input end of the first gear set 5 is connected to a hydraulic motor, and the output end of the first gear set 5 is connected to the input end of the second gear set 6. The drum 3 is disposed at the output end of the second gear set 6. The ratchet reversing assembly 7 is disposed between the first gear set 5 and the second gear set 6, and is used to directly connect the output end of the first gear set 5 to the drum 3.

[0017] Gear set 1 5 includes sun gear 1 8, planet gear 1 9, planet carrier 1 10 and ring gear 1 11. Gear set 2 6 includes sun gear 2 12, planet gear 2 13, planet carrier 2 14 and ring gear 2 15. Sun gear 1 8 is connected to a hydraulic motor. Planet carrier 2 14 is connected to drum 3. Ratchet reversing assembly 7 includes locking element 1 16, locking element 2 17 and one-way rotating element 18. Locking element 1 16 is used to control whether ring gear 1 11 and ring gear 2 15 rotate. Locking element 2 17 is used to control whether sun gear 2 12 rotates. One-way rotating element 18 is disposed between ring gear 1 11 and planet carrier 2 14.

[0018] The unidirectional rotating component 18 includes a ratchet disk 19 disposed on the side of the gear ring 11, a ratchet disk 20 disposed on the side of the planetary carrier 14, and a spherical ratchet 21. The ratchet disk 19 has a ratchet groove 22, and the ratchet disk 20 has a sliding hole 23. The spherical ratchet 21 includes a ball head 24 and a connecting post 25. The ball head 24 is disposed in the ratchet groove 22, and the connecting post 25 is slidably disposed in the sliding hole 23. A spring 26 is also disposed between the connecting post 25 and the bottom of the sliding hole 23. When the ratchet disk 19 rotates clockwise, the ball head 24 is stuck in the ratchet groove 22, and the ratchet disk 19 drives the ratchet disk 20 to rotate. When the ratchet disk 19 rotates counterclockwise, the ball head 24 moves along the upper ratchet groove 22 into the lower ratchet groove 22, and the connecting post 25 slides into the sliding hole 23 and compresses the spring 26. At this time, the ratchet disk 19 cannot drive the ratchet disk 20 to rotate.

[0019] The locking element 16 includes several top blocks 28 and a hydraulic flow channel 27 opened in the housing 1. When the hydraulic flow channel 27 is connected to hydraulic oil, it drives all the top blocks 28 to press against the gear ring 11 and the gear ring 25. The top blocks 28 are arranged in a ring, thereby pressing the gear ring 11 and the gear ring 25 at multiple points.

[0020] Locking component 2 17 includes a hydraulic cylinder 29 and a top block 2 30. The top block 2 30 is located at the output end of the hydraulic cylinder 29. A through hole is provided in the middle of the planetary carrier 2 14. The top block 2 30 is slidably located in the through hole. An inclined top surface 1 31 is provided on the end face of the top block 2 30. An inclined top surface 2 32 is provided on the side end of the sun gear 2 12. The inclined top surface 1 31 and the inclined top surface 2 32 are fitted together and pressed tightly. When the hydraulic cylinder 29 drives the top block 2 30 to move, the inclined top surface 1 31 and the inclined top surface 2 32 gradually press together, thereby locking the sun gear 2 12 and preventing it from rotating.

[0021] In actual operation, the hydraulic motor provides power to drive the sun gear 8 to rotate. The sun gear 8 drives the planet gear 9 to rotate. The planet gear 9 rolls in the gear ring 11 and drives the planet carrier 10 to rotate. The rotation of the planet carrier 10 is output to the gear set 6.

[0022] In normal reversing mode, locking component 16 is in working state. By controlling the hydraulic flow channel 27 to connect hydraulic oil, the top block 28 is driven to press against gear ring 11 and gear ring 2 15, preventing them from rotating. At this time, gear ring 11 and gear ring 2 15 are in a fixed state, while locking component 2 17 is in a relaxed state and does not lock the sun gear 2 12. The output of gear set 5 is transmitted to drum 3 through gear set 2 6. At the same time, ratchet reversing component 7 does not function. Gear ring 11 and planetary carrier 2 14 rotate relative to each other, and drum 3 achieves the corresponding rotation action, pulling the goods up.

[0023] When a reversing is required, the locking component 16 is in a non-working state, and the top block 30 presses against the sun gear 12 through the cooperation of the inclined top surface 31 and the inclined top surface 32, locking the sun gear 12. At this time, the ratchet reversing assembly 7 plays a role. Due to the characteristics of the unidirectional rotating component 18, when the ratchet disc 19 rotates clockwise, it drives the ratchet disc 20 to rotate, which in turn causes the gear ring 11 to drive the planet carrier 24 to rotate. The gear ring 11 directly transmits power to the drum 3 through the planet carrier 24, realizing the reversing.

[0024] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A hydraulic winch reversing and switching structure, comprising a housing (1), a planetary reduction gear assembly (2), a drum (3), and a support (4), wherein the planetary reduction gear assembly (2) is disposed inside the housing (1), and the support (4) and the drum (3) are disposed outside the housing (1), characterized in that: The planetary reduction assembly (2) includes a first gear set (5), a second gear set (6), and a ratchet reversing assembly (7). The input end of the first gear set (5) is connected to the hydraulic motor, and the output end of the first gear set (5) is connected to the input end of the second gear set (6). The drum (3) is located at the output end of the second gear set (6). The ratchet reversing assembly (7) is located between the first gear set (5) and the second gear set (6). The ratchet reversing assembly (7) is used to directly connect the output end of the first gear set (5) to the drum (3).

2. The hydraulic winch direction-switching structure according to claim 1, characterized in that: The first gear set (5) includes a sun gear (8), a planet gear (9), a planet carrier (10), and a ring gear (11). The second gear set (6) includes a sun gear (12), a planet gear (13), a planet carrier (14), and a ring gear (15). The sun gear (8) is connected to a hydraulic motor, and the planet carrier (14) is connected to a drum (3).

3. The hydraulic winch direction-switching structure according to claim 2, characterized in that: The ratchet reversing assembly (7) includes a locking element one (16), a locking element two (17), and a one-way rotating element (18). The locking element one (16) is used to control whether the gear ring one (11) and the gear ring two (15) rotate. The locking element two (17) is used to control whether the sun gear two (12) rotates. The one-way rotating element (18) is disposed between the gear ring one (11) and the planet carrier two (14).

4. The hydraulic winch direction-switching structure according to claim 3, characterized in that: The unidirectional rotating component (18) includes a ratchet disk one (19) disposed on the side of the gear ring one (11), a ratchet disk two (20) disposed on the side of the planetary carrier two (14), and a spherical ratchet tooth (21). The ratchet disk one (19) has a ratchet groove (22), and the ratchet disk two (20) has a sliding hole (23). The spherical ratchet tooth (21) includes a ball head (24) and a connecting post (25). The ball head (24) is disposed in the ratchet groove (22), and the connecting post (25) is slidably disposed in the sliding hole (23). A spring (26) is also disposed between the connecting post (25) and the bottom of the sliding hole (23). When the ratchet disk one (19) rotates clockwise, it drives the ratchet disk two (20) to rotate. When the ratchet disk one rotates counterclockwise, it cannot drive the ratchet disk two (20) to rotate.

5. The hydraulic winch direction-switching structure according to claim 3, characterized in that: The locking element (16) includes a plurality of top blocks (28) and a hydraulic channel (27) opened in the housing (1). When the hydraulic channel (27) is connected to hydraulic oil, it drives all the top blocks (28) to press against the gear ring (11) and the gear ring (15).

6. The hydraulic winch direction-changing structure according to claim 3, characterized in that: The second locking component (17) includes a hydraulic cylinder (29) and a second top block (30), the second top block (30) being disposed at the output end of the hydraulic cylinder (29).

7. The hydraulic winch direction-switching structure according to claim 6, characterized in that: The planetary carrier 2 (14) has a through hole in the middle, the top block 2 (30) is slidably disposed in the through hole, the top block 2 (30) has an inclined top surface 1 (31) on its end face, the sun gear 2 (12) has an inclined top surface 2 (32) on its side end, and the inclined top surface 1 (31) and the inclined top surface 2 (32) are fitted together and pressed tightly.

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