Variable-speed noise-reduction hydraulic winch

Abstract

The utility model discloses a hydraulic winch capable of changing speed and reducing noise, which belongs to the technical field of winches, and is characterized by comprising a rack, a radial plunger motor, a reduction gearbox and two winding drums, the two winding drums are rotatably arranged on the rack and are coaxially arranged, a motor gear I is coaxially arranged at the output end of the radial plunger motor, and a motor gear II is coaxially arranged at the output end of the reduction gearbox. The reduction gearbox comprises a box body, a first transmission gear, a second transmission gear and a third transmission gear, the first transmission gear, the second transmission gear and the third transmission gear are all rotationally arranged in the box body, the first motor gear is meshed with the first transmission gear, the first transmission gear is coaxially connected with the second transmission gear, and the second transmission gear is meshed with the third transmission gear. An output shaft of the reduction gearbox is coaxially connected with the third transmission gear, the two winding drums are coaxially connected with the output shaft of the reduction gearbox, a plurality of grooves used for containing steel wire ropes are formed in the outer side walls of the winding drums, the grooves are evenly distributed in the axis direction of the winding drums, grease layers are arranged in the grooves, and the hydraulic winch can effectively reduce noise.

Description

Technical Field

[0001] This utility model belongs to the field of winch technology, and specifically relates to a hydraulic winch with variable speed and noise reduction. Background Technology

[0002] A hydraulic winch is a small, lightweight lifting device that uses a drum to wind a steel wire rope to lift or pull heavy objects. Also known as a winch, it is widely used on ships and is an essential deck device. It is mainly used for anchoring, mooring, towing, lifting cargo, and pulling cables.

[0003] Steel wire rope is made of multiple strands of steel wire twisted together. The surface of the drum has processing lines or slight unevenness. When the two come into contact, high-frequency vibration and friction noise are easily generated. During the winding process, slight relative sliding between the steel wire rope and the drum can also cause noise.

[0004] Steel wire rope is made of multiple strands of high-strength steel wire twisted together. The surface of the steel wire rope has a complex multi-layered texture. However, the drum inevitably has turning marks or grinding wheel marks during the processing. When the steel wire rope and the drum come into contact during dynamic winding, their interaction will cause vibration and noise. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a variable-speed, noise-reducing hydraulic winch. The technical problem to be solved by this invention is: how to reduce noise.

[0006] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: a variable speed noise reduction hydraulic winch, including a frame, a radial piston motor, a reduction gearbox, and two drums. Both drums are rotatably mounted on the frame and are coaxially arranged. A motor gear 1 is coaxially arranged at the output end 55 of the radial piston motor. The reduction gearbox includes a housing, a transmission gear 1, a transmission gear 2, and a transmission gear 3. The transmission gear 1, transmission gear 2, and transmission gear 3 are all rotatably mounted in the housing. The motor gear 1 meshes with the transmission gear 1. The transmission gear 1 is coaxially connected with the transmission gear 2. The transmission gear 2 meshes with the transmission gear 3. The output shaft of the reduction gearbox is coaxially connected with the transmission gear 3. The two drums are coaxially connected with the output shaft of the reduction gearbox. The outer wall of the drum is provided with a plurality of grooves for accommodating wire ropes. The plurality of grooves are evenly distributed along the axial direction of the drum, and a grease layer is provided in each of the plurality of grooves.

[0007] In the aforementioned variable speed noise reduction hydraulic winch, a drive shaft is rotatably mounted inside the housing. Both the first drive gear and the second drive gear are coaxially mounted on the drive shaft. Self-aligning roller bearings are provided between both ends of the drive shaft and the housing, as well as between both ends of the output shaft of the gearbox and the housing.

[0008] In the aforementioned variable speed noise reduction hydraulic winch, the housing is provided with a receiving cavity corresponding to the self-aligning roller bearing, the self-aligning roller bearing is disposed in the receiving cavity, and a cover plate corresponding to the receiving cavity is detachably connected to the housing, the cover plate being used to seal the opening of the receiving cavity.

[0009] In the aforementioned variable-speed noise-reducing hydraulic winch, the cover plate includes a sound insulation layer, a sound absorption layer, and a protective layer, which are arranged sequentially from the inside to the outside.

[0010] In the aforementioned variable-speed noise-reducing hydraulic winch, the sound insulation layer is made of sound insulation felt, the sound absorption layer is made of fiberglass cotton, and the protective layer is made of aluminum alloy.

[0011] In the aforementioned variable speed noise reduction hydraulic winch, the cross-sections of several of the grooves are all arc-shaped.

[0012] In the aforementioned variable speed noise reduction hydraulic winch, the bottom of the groove is provided with several oil outlet holes, one end of the drum is provided with an oil injection hole, the oil injection hole is connected to several oil outlet holes, and the diameter of several oil outlet holes gradually decreases from the end away from the groove to the end closer to the groove.

[0013] In the aforementioned variable speed noise reduction hydraulic winch, a honeycomb-shaped washer is provided at the bottom of several of the grooves, and the washer covers several of the oil outlet holes. The washer can store and slowly release grease.

[0014] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0015] Several grooves for accommodating the wire rope are provided on the outer wall of the drum. These grooves are evenly distributed along the axis of the drum, and each groove contains a grease layer. First, the grooves limit the movement of the wire rope, preventing it from becoming tangled on the drum and thus reducing noise. Second, the grease layer lubricates the wire rope, reducing the coefficient of friction between the wire rope and the drum, thus reducing friction-generated noise. It also absorbs and disperses the vibrations generated by the wire rope during winding, thereby reducing noise caused by vibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0017] Figure 2 for Figure 1 Enlarged view of part A;

[0018] Figure 3 This is a schematic diagram of the structure of the reel in the embodiment;

[0019] Figure 4 This is a schematic diagram of the gearbox structure in an embodiment;

[0020] Figure 5 for Figure 4 Enlarged view of part B.

[0021] Reference numerals: 1. Frame; 2. Radial piston motor; 3. Motor gear one; 4. Drum; 5. Gearbox; 51. Housing; 52. Transmission gear one; 53. Transmission gear two; 54. Transmission gear three; 55. Output end; 6. Groove; 7. Grease layer; 8. Drive shaft; 9. Self-aligning roller bearing; 10. Receiving cavity; 11. Cover plate; 12. Sound insulation layer; 13. Sound absorption layer; 14. Protective layer; 15. Oil outlet; 16. Washer. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] Variable speed noise reduction hydraulic winches, such as Figures 1 to 5 As shown, it includes a frame 1, a radial piston motor 2, a reduction gearbox 5, and two drums 4. Both drums 4 are rotatably mounted on the frame 1 and are coaxially arranged.

[0024] The output end 55 of the radial piston motor 2 is coaxially equipped with a motor gear 3. The gearbox 5 includes a housing 51, a transmission gear 52, a transmission gear 53, and a transmission gear 54. The transmission gears 52, 53, and 54 are all rotatably mounted inside the housing 51. The motor gear 3 meshes with the transmission gear 52. The transmission gear 52 is coaxially connected with the transmission gear 53. The transmission gear 53 meshes with the transmission gear 54. The output shaft of the gearbox 5 is coaxially connected with the transmission gear 54. The two drums 4 are coaxially connected with the output shaft of the gearbox 5.

[0025] A drive shaft 8 is rotatably mounted inside the housing 51. Both drive gear 1 52 and drive gear 2 53 are coaxially mounted on the drive shaft 8. Self-aligning roller bearings 9 are installed between both ends of the drive shaft 8 and the housing 51, as well as between both ends of the output shaft of the gearbox 5 and the housing 51.

[0026] It should be noted that the self-aligning roller bearing 9 can automatically compensate for the misalignment of the output shaft of the gearbox 5 and the transmission shaft 8, which not only ensures the gear meshing accuracy, but also reduces vibration and noise caused by meshing impact or load fluctuation.

[0027] The housing 51 is provided with a cavity 10 for the self-aligning roller bearing 9. The self-aligning roller bearing 9 is placed in the cavity 10. A cover plate 11 corresponding to the cavity 10 is detachably connected to the housing 51. The cover plate 11 is used to seal the opening of the cavity 10. The cavity 10 can effectively ensure the stability of the self-aligning roller bearing 9. Moreover, by sealing the opening of the cavity 10 with the cover plate 11, external impurities are prevented from entering.

[0028] Furthermore, the cover plate 11 includes a sound insulation layer 12, a sound absorption layer 13, and a protective layer 14, which are arranged sequentially from the inside to the outside. The sound insulation layer 12 is made of sound insulation felt material, the sound absorption layer 13 is made of glass fiber cotton material, and the protective layer 14 is made of aluminum alloy material.

[0029] The sound insulation layer 12, made of sound insulation felt material, effectively blocks the sound waves from propagating outward, and the sound absorption layer 13, made of glass fiber cotton material, effectively absorbs the sound waves, thereby reducing the noise transmission inside the enclosure 51. The protective layer 14, made of aluminum alloy material, can effectively ensure the structural strength, ensure the stability and reliability of the cover plate 11 structure, and, due to the good thermal conductivity of aluminum alloy material, can achieve effective heat dissipation.

[0030] The outer wall of the drum 4 is provided with several grooves 6 for accommodating the wire rope. The grooves 6 are evenly distributed along the axial direction of the drum 4. It should be noted that the grooves 6 limit the wire rope and prevent the wire rope from becoming tangled on the drum 4, thereby reducing noise. In this embodiment, the cross-section of the grooves 6 is arc-shaped. The arc structure can effectively reduce the wear generated when the wire rope and the drum 4 come into contact.

[0031] A grease layer 7 is provided in each of the grooves 6. The grease layer 7 reduces the coefficient of friction between the wire rope and the drum 4 through its lubricating effect, thereby reducing the noise generated by friction. It can also absorb and disperse the vibration generated by the wire rope during the winding process, thereby reducing the noise caused by vibration.

[0032] The bottom of the groove 6 is provided with several oil outlet holes 15, and one end of the roller 4 is provided with an oil injection hole (not shown in the figure). The oil injection hole is connected to several oil outlet holes 15. The diameter of several oil outlet holes 15 gradually decreases from the end away from the groove 6 to the end closer to the groove 6. The bottom of several grooves 6 is provided with honeycomb-shaped (not shown in the figure) gaskets 16. The gaskets 16 cover several oil outlet holes 15. The gaskets 16 can store and slowly release grease. The structure of the oil outlet holes 15 allows the oil to enter the groove 6 at a uniform flow rate, that is, to ensure that the oil outlet speed and flow rate of each oil outlet hole 15 are relatively stable.

[0033] The operator injects oil through the oil injection hole, so that the oil enters the groove 6 from several oil outlet holes 15. The honeycomb-shaped gasket 16 absorbs and stores the oil and forms a grease layer 7. When the wire rope comes into contact with the gasket 16, the gasket 16 slowly releases the grease.

[0034] It should be noted that the honeycomb gasket 16 can absorb the oil entering the groove 6 from the oil outlet 15 and store it to form a grease layer. Therefore, it can still provide lubrication for the wire rope for a period of time without continuous oiling, thus extending the cycle and reducing the trouble of frequent oiling.

[0035] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A variable-speed, noise-reducing hydraulic winch, characterized in that: The system includes a frame (1), a radial piston motor (2), a gearbox (5), and two drums (4). Both drums (4) are rotatably mounted on the frame (1) and coaxially arranged. A motor gear (3) is coaxially mounted on the output end (55) of the radial piston motor (2). The gearbox (5) includes a housing (51), a transmission gear (52), a transmission gear (53), and a transmission gear (54). The transmission gears (52, 53, and 54) are rotatably mounted within the housing (51). The motor gear (3) is connected to the... The first transmission gear (52) meshes with the second transmission gear (53), the second transmission gear (53) meshes with the third transmission gear (54), the output end (55) of the gearbox (5) is coaxially connected with the third transmission gear (54), the two drums (4) are coaxially connected with the output shaft of the gearbox (5), the outer wall of the drum (4) is provided with a number of grooves (6) for accommodating the wire rope, the number of grooves (6) are evenly distributed along the axial direction of the drum (4), and a grease layer (7) is provided in each of the grooves (6).

2. The variable-speed noise-reducing hydraulic winch according to claim 1, characterized in that: A drive shaft (8) is rotatably mounted inside the housing (51). The first drive gear (52) and the second drive gear (53) are coaxially mounted on the drive shaft (8). Self-aligning roller bearings (9) are provided between the two ends of the drive shaft (8) and the housing (51), as well as between the two ends of the output shaft of the gearbox (5) and the housing (51).

3. The variable-speed noise-reducing hydraulic winch according to claim 2, characterized in that: The housing (51) is provided with a receiving cavity (10) corresponding to the self-aligning roller bearing (9), the self-aligning roller bearing (9) is disposed in the receiving cavity (10), and a cover plate (11) corresponding to the receiving cavity (10) is detachably connected to the housing (51), the cover plate (11) is used to cover the opening of the receiving cavity (10).

4. The variable-speed noise-reducing hydraulic winch according to claim 3, characterized in that: The cover plate (11) includes a sound insulation layer (12), a sound absorption layer (13), and a protective layer (14), which are arranged sequentially from the inside to the outside.

5. The variable-speed noise-reducing hydraulic winch according to claim 4, characterized in that: The sound insulation layer (12) is made of sound insulation felt material, the sound absorption layer (13) is made of glass fiber cotton material, and the protective layer (14) is made of aluminum alloy material.

6. The variable-speed noise-reducing hydraulic winch according to any one of claims 1, 2, 3, 4, or 5, characterized in that: The cross-sections of several of the grooves (6) are all arc-shaped.

7. The variable-speed noise-reducing hydraulic winch according to any one of claims 1, 2, 3, 4, or 5, characterized in that: The bottom of the groove (6) is provided with several oil outlet holes (15), and one end of the roller (4) is provided with an oil injection hole. The oil injection hole is connected to several oil outlet holes (15). The diameter of several oil outlet holes (15) gradually decreases from the end away from the groove (6) to the end close to the groove (6).

8. The variable-speed noise-reducing hydraulic winch according to claim 7, characterized in that: The bottom of several of the grooves (6) is provided with honeycomb-shaped gaskets (16), which cover several of the oil outlet holes (15) and can store and slowly release grease.

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