Compact speed reduction equipment special for winding machinery

Abstract

The utility model relates to the technical field of speed reducers, in particular to compact type speed reduction equipment special for winding machinery, which comprises a box body, an input part arranged at the front end of the box body and an output shaft arranged at the rear end of the box body, and a multi-stage transmission system is arranged between the input part and the output shaft. Comprising a first-stage transmission system formed by meshing a driving gear and a driven gear, a second-stage transmission system formed by meshing a first gear shaft and a first gear, and a third-stage transmission system formed by meshing a second gear shaft and a second gear, and the adjacent transmission systems are in meshing transmission connection. According to the technical scheme, the integrated box body and the direct connection type frequency conversion roller way brake motor are adopted, a traditional coupler is omitted, the length of the whole machine is shortened, positioning errors are reduced, coaxiality is guaranteed, oil seal abrasion is reduced, and sealing reliability is improved; the multi-stage transmission system is designed in a modularized mode, the speed ratio range is wide, and the requirements of different working conditions are met; the top of the box body is provided with lifting bolts, the bottom is provided with integrated bottom feet, the box body is directly fixed to a rack, and the size is reduced.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a compact speed reduction device for winch machinery. Background Technology

[0002] Winch machinery is widely used in construction, water conservancy projects, mining, docks and other fields. The performance of its core power equipment, the reducer, directly affects the stability and efficiency of material lifting or dragging. Traditional reducers used in winches have the following significant drawbacks.

[0003] Loose structure and inconvenient installation: Traditional reducers mostly use split housings and external motors, relying on mounting brackets, resulting in large overall size, high assembly error, and difficulty in adapting to the installation requirements of narrow spaces; Insufficient braking and transmission efficiency: Traditional brake motors and reducers are connected by couplings, making it difficult to ensure coaxiality, which easily causes oil seal wear and transmission efficiency loss, and the braking response is slow, posing safety hazards. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a compact speed reduction device specifically for winch machinery, thereby reducing the size of the speed reducer and installation space, and improving transmission efficiency.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A compact speed reduction device for winches includes a housing, an input section located at the front end of the housing, and an output shaft located at the rear end of the housing. A multi-stage transmission system is provided between the input section and the output shaft, including a primary transmission system consisting of a driving gear and a driven gear meshing together, a secondary transmission system consisting of a gear shaft and a gear, and a tertiary transmission system consisting of a gear shaft and a gear. Adjacent transmission systems are meshed and connected. A soundproof cover is bolted to the outside of the housing. The inner wall of the soundproof cover is lined with sound-absorbing cotton and has grid-type heat dissipation windows. A noise monitor is magnetically fixed to the inner wall of the soundproof cover for real-time monitoring of the speed reduction device's operating noise.

[0007] In some embodiments of this utility model, the input part includes a motor. In the primary transmission system, the driving gear is fixed to the output end of the motor by a flat key, the driven gear is mounted on the gear shaft by a flat key, and the gear shaft is mounted on the housing by tapered roller bearings one and two. Its axial clearance is adjusted by adjusting shims one and a retaining ring with holes one.

[0008] In some embodiments of this utility model, in the secondary transmission system, gear one is fixed to gear shaft two by a flat key and a spacer ring one, gear shaft two is installed in the housing by cylindrical roller bearings and tapered roller bearings three, and its axial clearance is adjusted by adjusting shims two and a retaining ring two.

[0009] In some embodiments of this utility model, in the three-stage transmission system, the second gear is fixed to the output shaft by a flat key, the output shaft is mounted on the housing by a tapered roller bearing four and a tapered roller bearing five, and is axially positioned by a spacer ring two.

[0010] In some embodiments of this utility model, an oil seal and an oil retaining ring are sequentially provided at the outer end of the output shaft.

[0011] In some embodiments of this utility model, eye bolts are symmetrically provided on the top of the box. The eye bolts are fixed to the casting boss of the box by threaded connection for hoisting and handling of the equipment.

[0012] In some embodiments of this utility model, a vent plug, an oil plug, and an oil sight glass are respectively installed on the top, bottom, and sides of the box.

[0013] The vent plug is a knob-type structure with a filter screen, used to balance the air pressure inside and outside the box and prevent lubricating oil from leaking due to pressure difference.

[0014] The oil plug is a magnetic plug that is connected to the oil drain port of the housing by a threaded seal. It is used to discharge waste oil and absorb metal debris.

[0015] The oil sight glass is made of transparent pressure-resistant glass and is embedded in the observation window of the housing for real-time monitoring of the lubricating oil level and cleanliness.

[0016] In some embodiments of this utility model, the housing is provided with a transparent cover corresponding to the position of the output shaft. The transparent cover is connected to the housing through a snap-on quick-release structure, and a sealing strip is attached to the inside for quick inspection and sealing protection of the housing.

[0017] In some embodiments of this utility model, the top of the box is provided with a viewing cover, which is fixed to the viewing flange of the box by bolts, and the viewing cover is embedded with high-temperature resistant glass for observing the gear meshing status and lubrication status inside the box.

[0018] In some embodiments of this utility model, the sound insulation cotton is a composite sound-absorbing material of polyester fiber and rubber with a thickness of 15-25mm, and is fixed to the inner wall of the sound insulation cover by a high-temperature resistant adhesive, and the overall noise reduction of the sound insulation cover is ≥30dB.

[0019] The beneficial effects of this utility model are:

[0020] Compared to traditional methods, this technical solution uses an integrated housing and a direct-drive variable frequency roller conveyor brake motor, eliminating the need for traditional couplings, shortening the overall length, reducing positioning errors, ensuring coaxiality, reducing oil seal wear, and improving sealing reliability. Furthermore, the multi-stage transmission system features a modular design with a wide speed ratio range to adapt to different working conditions. The housing has eye bolts on the top and integrated feet on the bottom, allowing for direct mounting to the frame, eliminating the need for mounting brackets, reducing size, and facilitating installation. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a cross-sectional view of the primary transmission system in this utility model;

[0023] Figure 2 This is a cross-sectional view of the two-stage and three-stage transmission systems in this utility model;

[0024] Figure 3 This is a three-dimensional view of the soundproof cover and the enclosure in this utility model.

[0025] Reference numerals: 1. Eye bolt; 2. Breath plug; 3. Motor; 4. Drive gear; 5. Driven gear; 6. Elastic retaining ring for bore 1; 7. Adjusting shim 1; 8. Tapered roller bearing 1; 9. Gear shaft 1; 10. Housing; 11. Oil plug; 12. Oil sight glass; 13. Tapered roller bearing 2; 14. Spacer ring 1; 15. Gear 1; 16. Cylindrical roller bearing; 17. Gear shaft 2; 18. Tapered roller bearing 3; 19. Adjusting shim 2; 20. Elastic retaining ring for bore 2; 21. Through cover; 22. Output shaft; 23. Oil seal; 24. Spacer ring 2; 25. Tapered roller bearing 4; 26. Oil retainer ring; 27. Gear 2; 28. Sight hole cover; 29. ​​Tapered roller bearing 5; 30. Soundproof cover; 31. Noise monitor; 32. Sound insulation cotton; 33. Heat dissipation window. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example

[0027] like Figure 1 , Figure 2 , Figure 3As shown, a compact speed reduction device for winch machinery includes a housing 10, an input section located at the front end of the housing 10, and an output shaft 22 located at the rear end of the housing 10. A multi-stage transmission system is provided between the input section and the output shaft 22, including a primary transmission system consisting of a drive gear 4 and a driven gear 5 meshing together, a secondary transmission system consisting of a gear shaft 9 and a gear 15 meshing together, and a tertiary transmission system consisting of a gear shaft 17 and a gear 27 meshing together. Adjacent transmission systems are meshed and connected.

[0028] This speed reduction device employs a three-stage reduction transmission method to achieve the conversion from high-speed, low-torque to low-speed, high-torque. The power transmission path is as follows: motor output shaft → driving gear 4 → driven gear 5 → gear shaft 1 9 → gear 1 15 → gear shaft 2 17 → gear 2 27 → output shaft 22. Each stage of transmission achieves power transmission through gear meshing, while progressively reducing speed and increasing output torque. The transmission ratios at each stage are precisely designed to ensure that the final output speed meets the working requirements of the hoisting machinery, and the load distribution at each stage is balanced, extending service life. The multi-stage transmission design achieves a large reduction ratio within a compact space, reducing equipment size; the reasonable distribution of transmission ratios and balanced load at each stage improve gear life; and the modular design facilitates maintenance and component replacement, reducing maintenance costs.

[0029] As an example, based on the actual operating conditions of the hoisting machinery, the first-stage transmission ratio can be designed to be 3:1, the second-stage transmission ratio to be 4:1, and the third-stage transmission ratio to be 5:1, with a total reduction ratio reaching 60:1, meeting the requirements for low-speed, high-torque output.

[0030] In some embodiments of this utility model, the input part includes a motor 3. In the primary transmission system, the driving gear 4 is fixed to the output end of the motor 3 by a flat key, the driven gear 5 is mounted on the gear shaft 9 by a flat key, and the gear shaft 9 is mounted on the housing 10 by a tapered roller bearing 8 and a tapered roller bearing 13. Its axial clearance is adjusted by adjusting shims 7 and a retaining ring 6.

[0031] Motor 3, acting as the power source, is directly connected to the driving gear 4, transmitting rotational power to the driven gear 5. The driving gear 4 is fixed to the motor output shaft using a key connection. This connection method is simple, reliable, and provides stable torque transmission, while also facilitating installation and disassembly. The driven gear 5 is also keyed to gear shaft 9, ensuring efficient torque transmission. Gear shaft 9 is supported within the housing 10 by tapered roller bearings 8 and 13 at both ends. The tapered roller bearings are mounted back-to-back (i.e., the large ends of the inner rings face each other), forming an ideal axial positioning structure capable of simultaneously withstanding radial and axial forces, ensuring stable operation of the transmission system.

[0032] The bearing preload is adjusted using a combination of adjusting shims 7 and elastic retaining rings 6. By adjusting the shim thickness, the bearing preload can be precisely controlled to achieve optimal operating conditions. This adjustment method ensures assembly accuracy and operational reliability while facilitating maintenance and adjustment.

[0033] As an example, the drive gear 4 can be installed using a heat-shrink or interference fit method to improve connection rigidity.

[0034] In some embodiments of this utility model, in the secondary transmission system, gear 15 is fixed to gear shaft 17 by a flat key and a spacer ring 14. Gear shaft 17 is mounted on housing 10 by cylindrical roller bearing 16 and tapered roller bearing 18. Its axial clearance is adjusted by adjusting shim 19 and elastic retaining ring 20.

[0035] Gear 15 receives power from the primary transmission system and transmits it to gear shaft 27 via meshing with gear shaft 9. Gear 15 and gear shaft 27 are connected by a key for torque transmission and axial positioning is achieved through a spacer ring 14. The spacer ring ensures precise gear positioning on the shaft, prevents axial movement, and guarantees meshing accuracy. Gear shaft 27 is supported by a "fixed-floating" configuration: one end uses a cylindrical roller bearing 16 (floating support, primarily bearing radial force), and the other end uses a tapered roller bearing 3 18 (fixed support, bearing both radial and axial forces). This configuration effectively addresses shaft thermal expansion, avoids additional axial stress, and extends bearing life. Bearing preload adjustment still uses a combination of adjusting shims 2 19 and a retaining ring 20 to ensure optimal bearing operation.

[0036] In some embodiments of this utility model, in the three-stage transmission system, gear 27 is fixed to output shaft 22 by a flat key, output shaft 22 is mounted on housing 10 by tapered roller bearing 25 and tapered roller bearing 29, and is axially positioned by spacer ring 24.

[0037] Gear 27 receives power from the secondary transmission system and transmits it to the output shaft 22 through meshing with gear shaft 17. As it is at the end of the transmission chain, gear 27 bears a large torque, so it is fixed to the output shaft 22 by a reliable flat key connection to ensure stable torque transmission.

[0038] The output shaft 22 is supported by two tapered roller bearings, 25 and 29, forming an "O" configuration (i.e., inner rings facing each other). This configuration has high axial stiffness and can withstand complex radial and axial loads, making it suitable for load changes during the operation of the hoisting machinery. The spacer ring 24 enables precise axial positioning of the output shaft 22.

[0039] In some embodiments of this utility model, eye bolts 1 are symmetrically provided on the top of the housing 10. The eye bolts 1 are fixed to the cast boss of the housing 10 by threaded connection for hoisting and handling of the equipment. A vent plug 2, an oil plug 11, and an oil sight glass 12 are respectively installed on the top, bottom, and sides of the housing 10. The vent plug 2 is a knob-type structure with a filter screen, used to balance the air pressure inside and outside the housing 10 and prevent lubricating oil from leaking due to pressure difference. The oil plug 11 is a magnetic plug, which is connected to the oil drain port of the housing 10 by threaded sealing, used to discharge waste oil and absorb metal debris. The oil sight glass 12 is made of transparent pressure-resistant glass and is embedded in the observation window of the housing 10 for real-time monitoring of the lubricating oil level and cleanliness.

[0040] The housing 10, serving as the foundation structure of the entire reduction gear, is integrally formed from high-strength cast iron to ensure sufficient rigidity and strength. Symmetrically arranged eye bolts 1 at the top are used for equipment hoisting and handling, and are fixed to specially designed cast bosses on the housing 10 via threaded connections, improving load-bearing reliability.

[0041] The vent plug 2 is installed on the top of the housing 10 and features a knob-type structure with a filter screen. This allows airflow, balances the air pressure inside and outside the housing 10, and prevents lubricating oil leakage from the seal due to pressure differences caused by temperature changes. The filter screen blocks external dust and impurities from entering. The oil plug 11 is located at the lowest point of the housing and serves as an oil drain channel. Its magnetic plug design has a dual function: it provides a reliable seal through a threaded connection, and the magnetic material attracts metal shavings in the lubricating oil, facilitating observation of equipment wear. The oil sight glass 12 is installed on the side of the housing 10 and is made of transparent, pressure-resistant glass, allowing for direct observation of the lubricating oil level and condition without stopping the machine.

[0042] In some embodiments of this utility model, a through cover 21 is provided on the housing 10 corresponding to the output shaft 22. The through cover 21 is connected to the housing 10 via a snap-on quick-release structure, and a sealing strip is attached to its inner side for quick maintenance and sealing protection of the housing 10. The through cover 21 is located on the housing 10 corresponding to the output shaft 22, serving as a quick maintenance channel. Unlike traditional bolt connections, the through cover 21 is connected to the housing 10 via a snap-on quick-release structure, allowing for quick assembly and disassembly without tools or with only simple tools, significantly improving maintenance efficiency.

[0043] The snap-on quick-release structure consists of elastic claws and mating grooves. During operation, simply press or pull the claws to disengage them from the mating grooves, allowing for quick removal of the cover 21. The sealing strip attached to the inside of the cover 21 is made of oil-resistant rubber material. During installation, it is compressed to form a reliable seal, preventing lubricant leakage and the entry of external impurities. Example

[0044] Based on Embodiment 1, this embodiment adds an internal observation system, further improving the maintainability and operation monitoring capabilities of the equipment.

[0045] In some embodiments of this utility model, the top of the housing 10 is provided with a viewing cover 28, which is fixed to the viewing flange of the housing 10 by bolts, and the viewing cover 28 is embedded with high-temperature resistant glass for observing the gear meshing status and lubrication status inside the housing 10.

[0046] The viewing cover 28 is mounted on the top of the enclosure 10 and is bolted to the viewing flange on the enclosure 10, forming a detachable observation window. The high-temperature resistant glass embedded in the viewing cover 28 is made of tempered borosilicate glass, possessing excellent heat resistance, pressure resistance, and transparency, capable of withstanding temperature and pressure variations within the enclosure 10. The viewing cover 28's installation position is carefully designed to provide excellent visibility of critical internal components, particularly gear meshing areas and lubricant distribution. The viewing aperture has a diameter of 60mm, providing ample observation area. The flange connection utilizes precision-machined sealing surfaces and specialized gaskets to ensure a high-pressure seal.

[0047] The viewing port cover 28 can be used with a portable endoscope. By inserting the endoscope through the viewing port, a deeper view of the housing 10 can be achieved, facilitating a comprehensive inspection of the internal components.

[0048] As an example, an illumination system can be installed on the viewing cover 28 to improve the viewing experience.

[0049] As an example, the viewing cover 28 can be integrated with a camera system to enable remote monitoring and video recording analysis. Example

[0050] In some embodiments of this utility model, the outer end of the output shaft 22 is provided with an oil seal 23 and an oil baffle ring 26 in sequence, and a labyrinth seal ring in the middle.

[0051] The triple-sealing structure forms a more reliable protective barrier. The inner lip of the outer double-lip oil seal 23 prevents lubricating oil leakage, while the outer lip prevents external impurities from entering. The double-lip structure achieves bidirectional protection on a single seal. The middle labyrinth-type sealing ring adopts a special labyrinth structure design, forming a complex tortuous channel. It uses centrifugal force and gravity to block liquids and particles from entering or flowing out, achieving a sealing effect without contact and without friction or wear. The inner oil baffle ring 26 rotates together with the output shaft 22, using centrifugal force to throw away moisture and impurities approaching the sealing area, providing a third layer of protection. Example

[0052] The enclosure 10 is fixed to the outside with a soundproof cover 30 by bolts. The inner wall of the soundproof cover 30 is attached with sound insulation cotton 32 and has a grid-type heat dissipation window 33. The sound insulation cotton 32 is a composite sound-absorbing material of polyester fiber and rubber with a thickness of 15-25mm. It is fixed to the inner wall of the soundproof cover 30 with a high-temperature resistant adhesive. The overall noise reduction of the soundproof cover 30 is ≥30dB.

[0053] The soundproof enclosure 30 adopts a double-layer steel plate sandwich structure, filled with damping material, and is fixedly connected to the exterior of the housing 10 by bolts, forming a relatively enclosed soundproof space. The sound-absorbing cotton 32 attached to the inner wall is made of polyester fiber and rubber composite material, which has excellent sound absorption performance and can effectively absorb and block noise generated during transmission. The sound-absorbing cotton 32 adopts a corrugated surface design to increase the sound absorption area and improve the absorption effect of mid-to-high frequency noise. The grid-type heat dissipation window 33 adopts a "Z"-shaped sound channel design, so that the sound waves undergo multiple reflections and refractions during propagation, effectively reducing sound energy transmission; at the same time, it maintains sufficient ventilation area to ensure the heat dissipation requirements of the equipment. The inner surface of the grid is also covered with sound-absorbing material to further enhance the noise reduction effect.

[0054] The connection between the soundproof enclosure 30 and the housing 10 uses a flexible vibration damping pad to block sound transmission through the structure, further improving the sound insulation effect. The soundproof enclosure 30 is designed as a split structure, with the upper and lower parts combined by a quick-connect mechanism, which facilitates disassembly during equipment maintenance.

[0055] In some embodiments of this invention, a noise monitor 31 is magnetically fixed to the inner wall of the soundproof enclosure 30 for real-time monitoring of the operating noise of the deceleration equipment. The noise monitor 31 is magnetically fixed to the inner wall of the soundproof enclosure 30, facilitating position adjustment or disassembly for maintenance. The monitor integrates a high-precision microphone array, a digital signal processing chip, a wireless communication module, and a power supply system.

[0056] The microphone array collects the noise generated during operation. The digital signal processing system performs spectral analysis and feature extraction on the noise to identify the noise characteristics during normal operation and abnormal noise characteristics. Abnormal noise may indicate a malfunction or potential problem with the equipment, such as bearing damage, gear wear, or loose parts.

[0057] The monitor transmits data to the control system or monitoring terminal via a wireless communication module, enabling remote monitoring. The system incorporates machine learning algorithms to continuously optimize the fault identification model based on historical data, improving diagnostic accuracy. When an abnormal noise pattern is detected, the system issues an alarm, indicating the possible cause and location of the fault.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The above description is merely an example and illustration of the present utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.

Claims

1. A compact speed reduction device for winch machinery, comprising a housing, an input section disposed at the front end of the housing, and an output shaft disposed at the rear end of the housing, characterized in that, A multi-stage transmission system is provided between the input section and the output shaft, including a primary transmission system consisting of a driving gear and a driven gear meshing together, a secondary transmission system consisting of a gear shaft one meshing with a gear one meshing together, and a tertiary transmission system consisting of a gear shaft two meshing with a gear two meshing together. Adjacent transmission systems are meshed and connected. A soundproof cover is fixed to the outside of the housing by bolts. The inner wall of the soundproof cover is covered with sound-insulating cotton and has a grid-type heat dissipation window. A noise monitor is magnetically fixed to the inner wall of the soundproof cover for real-time monitoring of the operating noise of the deceleration equipment.

2. The compact speed reduction device for winch machinery according to claim 1, characterized in that, The input section includes a motor. In the primary transmission system, the driving gear is fixed to the output end of the motor by a flat key, and the driven gear is mounted on the gear shaft by a flat key. The gear shaft is mounted on the housing by tapered roller bearings one and two. Its axial clearance is adjusted by adjusting shims one and a retaining ring with holes one.

3. A compact speed reduction device for winch machinery according to claim 1, characterized in that, In the secondary transmission system, gear one is fixed to gear shaft two by a flat key and a spacer ring one. Gear shaft two is installed in the housing by cylindrical roller bearings and tapered roller bearings three. Its axial clearance is adjusted by adjusting shims two and a retaining ring two.

4. A compact speed reduction device for winch machinery according to claim 1, characterized in that, In the three-stage transmission system, gear two is fixed to the output shaft by a flat key, and the output shaft is installed in the housing by tapered roller bearing four and tapered roller bearing five, and is axially positioned by a spacer ring two.

5. A compact speed reduction device for winch machinery according to claim 1, characterized in that, An oil seal and an oil retaining ring are sequentially provided at the outer end of the output shaft.

6. A compact speed reduction device for winch machinery according to claim 1, characterized in that, The top of the housing is symmetrically equipped with eye bolts, which are fixed to the cast boss of the housing by threaded connection for hoisting and handling of the equipment.

7. A compact speed reduction device for winch machinery according to claim 1, characterized in that, The top, bottom, and sides of the housing are respectively equipped with a vent plug, an oil plug, and an oil sight glass. The vent plug is a knob-type structure with a filter screen; the oil plug is a magnetic plug; the oil sight glass is made of transparent pressure-resistant glass and is embedded in the observation window of the box.

8. A compact speed reduction device for winch machinery according to claim 1, characterized in that, The housing is provided with a transparent cover at the position corresponding to the output shaft. The transparent cover is connected to the housing through a snap-on quick-release structure, and a sealing strip is attached to the inside.

9. A compact speed reduction device for winch machinery according to claim 1, characterized in that, The top of the enclosure is equipped with a viewing cover, which is fixed to the viewing flange of the enclosure by bolts. The viewing cover is embedded with high-temperature resistant glass for observing the gear meshing status and lubrication of the gears inside the enclosure.

10. A compact speed reduction device for winch machinery according to claim 1, characterized in that, The sound insulation cotton is a composite sound-absorbing material of polyester fiber and rubber, with a thickness of 15-25mm, and is fixed to the inner wall of the sound insulation cover by a high-temperature resistant adhesive.

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