Exhaust fan for sugarcane cutting and impurity removing equipment

Abstract

The utility model discloses an exhaust fan for sugarcane cutting and impurity removing equipment. The exhaust fan comprises a box body and a gearbox, the gearbox comprises a clutch assembly connected with a power assembly of the impurity removal equipment; the clutch shaft is connected with the clutch assembly, is transversely arranged and is used for outputting power, and the clutch shaft is sleeved with a main bevel gear; the downstream spline shaft is longitudinally arranged under the clutch shaft and is perpendicular to the clutch shaft, the upper end of the downstream spline shaft is sleeved with a driven bevel gear, the driven bevel gear and the main bevel gear are in mutual meshing transmission, and fan blades are arranged at the lower end of the downstream spline shaft; the tooth number of the driving bevel gear is larger than that of the driven bevel gear. According to the exhaust fan, 90-degree transmission reversing can be achieved, so that the fan blades at the lower end are driven to rotate, negative pressure is generated in an air duct, and sugarcane leaves and sugarcane sections are separated and blown out of the machine. A mechanical gearbox is adopted for direct transmission, the transmission efficiency is larger than 95%, and energy conservation and consumption reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and particularly relates to an exhaust fan for a sugarcane cutting and impurity removing device. Background Art

[0002] For the existing sugarcane seed cutting machine with impurity removing and disinfection functions and capable of moving and operating in the field, it is necessary to remove impurities from sugarcane segments. Or when harvesting and cutting sugarcane, it is also necessary to remove impurities from sugarcane segments. When removing impurities from sugarcane segments, an exhaust fan is usually used for impurity removal. That is, power is provided to the exhaust fan of the machine to drive the wind blades to rotate, generate negative pressure in the air duct, separate sugarcane leaves from sugarcane segments and blow them out of the machine. At present, the power modes of exhaust fan impurity removal machines on the market mainly include two modes: using a hydraulic motor drive and an electric motor drive. The efficiency of hydraulic drive is difficult to exceed 50%, which will cause a large amount of energy waste. The electric motor drive requires a high-power power supply to be matched and is fixedly installed, which is not suitable for use on mobile devices in the field.

[0003] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide an exhaust fan for a sugarcane cutting and impurity removing device, thereby overcoming the disadvantages of the existing exhaust fan such as unstable operation and poor impurity removal effect.

[0005] To achieve the above purpose, the present utility model provides an exhaust fan for a sugarcane cutting and impurity removing device, which includes a box body and a gearbox. The gearbox is arranged on the box body. The gearbox includes: a clutch assembly, which is connected to the power assembly of the impurity removing device; a clutch shaft, which is connected to the clutch assembly and is horizontally arranged for outputting power. A main bevel gear is sleeved on the clutch shaft; and a downward spline shaft, which is longitudinally arranged directly below the clutch shaft and is perpendicular to the clutch shaft. A driven bevel gear is sleeved on the upper end of the downward spline shaft. The driven bevel gear meshes with the main bevel gear for transmission. A wind blade is arranged at the lower end of the downward spline shaft. Among them, the number of teeth of the main bevel gear is greater than the number of teeth of the driven bevel gear.

[0006] Preferably, in the above technical solution, a release bearing is arranged between the clutch assembly and the clutch shaft, and the release bearing is used to control the cutting off or starting of the work of the clutch shaft.

[0007] Preferably, in the above technical solution, the clutch shaft is arranged inside the gearbox housing. Installation bearing seats are arranged on both sides of the gearbox housing, and the gearbox housing is arranged on the fan mounting plate.

[0008] Preferably, in the above technical solution, the upper end of the downward spline shaft is arranged on the output bearing seat, the output bearing seat is arranged on the fan mounting plate, the lower end of the downward spline shaft is provided with a blade shaft sleeve, and the blade shaft sleeve is used for installing the blades of the exhaust fan.

[0009] Preferably, in the above technical solution, an outer downward shaft sleeve is sleeved outside the downward spline shaft, and the blade shaft sleeve is connected to the outer downward shaft sleeve through a connecting flange.

[0010] Preferably, in the above technical solution, an inner downward shaft sleeve is sleeved on the downward spline shaft, and the inner downward shaft sleeve is fixed on the fan mounting plate; wherein, both ends of the outer downward shaft sleeve are assembled on the inner downward shaft sleeve through bearings.

[0011] Preferably, in the above technical solution, the box body is provided with a feed inlet, a discharge outlet, an air inlet and an air outlet. A cane shaking roller is arranged below the discharge outlet. The cane shaking roller includes a rotating shaft and blades. The rotating shaft is horizontally arranged on the box body in a rotatable manner, and a plurality of the blades are evenly distributed on the rotating shaft. The blades are arranged in the box body and above the cane shaking roller.

[0012] Preferably, in the above technical solution, the feed inlet is arranged on the side surface of the box body, the discharge outlet is arranged at the bottom, the air outlet is arranged on the side surface of the upper part, and the air inlet is arranged at the lower part.

[0013] Preferably, in the above technical solution, the blades on the rotating shaft of the cane shaking roller are made of rubber material.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] (1) The exhaust fan of the present utility model for the cane cutting and impurity removing equipment is composed of a box body and a gearbox. The gearbox is composed of a clutch, a box body, a bearing component, a clutch shaft, a bevel gear pair, a downward spline shaft, blades and other spare parts. During the use process, the power assembly diesel engine of the cane cutting and impurity removing equipment is connected to the clutch assembly through a V-belt. The clutch assembly is connected to the horizontal clutch shaft, and the horizontal clutch shaft is connected with a bevel gear. Through the meshing of the bevel gears, the longitudinal driven shaft is driven to rotate, realizing a 90-degree transmission direction change, thereby driving the blades at the lower end to rotate, generating wind power, generating negative pressure in the air duct, separating the cane leaves and cane segments and blowing them out of the machine.

[0016] (2) The exhaust fan of the present utility model for the cane cutting and impurity removing equipment adopts a direct drive of a mechanical gearbox, and the transmission efficiency is greater than 95%. For the common hydraulic drive, its transmission efficiency is less than 50%, which can save energy and reduce consumption, and the cost is lower. The common motor drive is only applicable to fixed-point equipment with corresponding power sources. By adopting a direct drive of a mechanical gearbox, it can be installed on mobile machines and operate on the cultivated land. The usage scenarios of the two are different. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural view of a suction fan for a sugarcane cutting and impurity removing device according to the present utility model.

[0018] Figure 2 It is a schematic structural view of a gearbox of a suction fan for a sugarcane cutting and impurity removing device according to the present utility model.

[0019] Description of Main Reference Numerals:

[0020] 1 - housing, 11 - feed inlet, 12 - discharge outlet, 13 - air outlet, 14 - air inlet; 2 - gearbox, 21 - clutch assembly, 22 - clutch shaft, 221 - mounting bearing seat, 23 - downward spline shaft, 231 - output bearing seat, 232 - fan blade bushing, 233 - downward outer bushing, 234 - flange, 235 - downward inner bushing, 236 - bearing; 24 - main bevel gear, 25 - driven bevel gear, 26 - fan blade, 27 - release bearing, 28 - gearbox housing, 29 - fan mounting plate; 3 - sugarcane shaking roller, 31 - rotating shaft, 32 - blade. Detailed Description of the Invention

[0021] The following will describe in detail the specific embodiments of the present utility model with reference to the drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiments.

[0022] Unless otherwise clearly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0023] As Figures 1 to 2As shown in the figure, a suction fan for a sugarcane cutting and impurity removal device according to a specific embodiment of the present utility model includes a box body 1 and a gearbox 2, and the gearbox 2 is provided on the box body 1. The gearbox 2 includes a clutch assembly 21, a clutch shaft 22, and a downward spline shaft 23. The power assembly diesel engine of the sugarcane cutting and impurity removal device is connected to the clutch assembly 21 through a V-belt, and power is transmitted to the clutch assembly 21 through the power assembly. The clutch shaft 22 is connected to the clutch assembly 21. The clutch shaft 22 is horizontally arranged to form a main transmission shaft for outputting power. A main bevel gear 24 is provided at the right end of the clutch shaft 22. The downward spline shaft 23 is longitudinally arranged directly below the clutch shaft 22 and is perpendicular to the clutch shaft 22. The downward spline shaft 23 is a driven transmission shaft. A driven bevel gear 25 is provided at the upper end of the downward spline shaft 23. The driven bevel gear 25 meshes with the main bevel gear 24 for transmission. Among them, the number of teeth of the main bevel gear 24 is greater than the number of teeth of the driven bevel gear 25. A main bevel gear 24 is provided on the horizontally arranged clutch shaft 22 and a driven bevel gear 25 is provided on the longitudinally arranged downward spline shaft 23 to achieve the functions of a 90° angle change and speed increase. The downward spline shaft 23 extends into the box body 1, and a wind blade 26 is provided at the lower end of the downward spline shaft 23.

[0024] When the suction fan works, the power assembly transmits power to the clutch assembly 21. The clutch assembly 21 drives the clutch shaft 22 to rotate. The power is transmitted to the small driven bevel gear 25 through the large main bevel gear 24, driving the downward spline shaft 23 to rotate, and then driving the wind blade 26 at the lower end of the downward spline shaft to rotate at a high speed, generating air negative pressure to blow the cut and relatively light sugarcane leaves and tails out of the box body 1, while the relatively heavy sugarcane segments fall to the bottom of the box body 1.

[0025] Preferably, a release bearing 27 is provided between the clutch assembly 21 and the clutch shaft 22. The release bearing 27 is used to control the cutting off or starting of the operation of the clutch shaft 22. The provision of the release bearing 27 facilitates the control of the opening and closing of the suction fan.

[0026] Preferably, the clutch shaft 22 is arranged inside the gearbox housing 28. Mounting bearing seats 221 are provided on both sides of the gearbox housing 28. The clutch shaft 22 is horizontally arranged, and both ends are arranged on the mounting bearing seats 221. The gearbox housing 28 is arranged on the fan mounting plate 29. The gearbox housing 28 is mounted on the top of the box body 1 through the fan mounting plate 29.

[0027] Preferably, the upper end of the downward spline shaft 23 passes through the output bearing seat 231. The lower end of the output bearing seat 231 is arranged on the fan mounting plate 29, and the upper end is connected to the gearbox housing 28. A wind blade sleeve 232 is provided at the lower end of the downward spline shaft 23. The wind blade sleeve 232 is used to mount the wind blade 26 of the suction fan.

[0028] Preferably, a downward spline shaft 23 is sleeved with a downward outer shaft sleeve 233, and a blade shaft sleeve 232 is connected to the downward outer shaft sleeve 233 through a connecting flange 234. A downward inner shaft sleeve 235 is sleeved on the downward spline shaft 23, and the downward inner shaft sleeve 235 is located between the downward spline shaft 23 and the downward outer shaft sleeve 233. The downward inner shaft sleeve 235 is fixed on the upper end fan mounting plate 29. Both ends of the downward outer shaft sleeve 29 are assembled on the downward inner shaft sleeve 235 through bearings 236. When working, the downward spline shaft 23 rotates, the blade shaft sleeve 232 at the lower end also rotates, and the downward outer shaft sleeve 233 also rotates. The downward inner shaft sleeve 235 is fixedly arranged to play a supporting role. Since both ends inside the downward outer shaft sleeve 233 are installed on the downward inner shaft sleeve 235 through bearings, the stability of the high-speed rotation of the blades is maintained.

[0029] Preferably, a feed inlet 11 is provided on the left side of the box body 1, a discharge outlet 12 is provided at the bottom, an air outlet 13 is provided on the side surface of the upper part, and an air inlet 14 is provided on the side wall of the middle and lower part of the box body. A cane shaking roller 3 is provided below the feed inlet 11. The cane shaking roller 3 includes a rotating shaft 31 and blades 32. The rotating shaft 31 is horizontally arranged on the box body 1 in a rotatable manner, located below the discharge outlet 11, and the rotating shaft 31 is connected to a power assembly (not shown in the figure), and the rotating shaft 31 is driven to rotate by the power assembly. A plurality of blades 32 are provided on the rotating shaft 31. The plurality of blades 32 are arranged along the axial direction of the rotating shaft 31 and are evenly distributed around the outer surface of the rotating shaft 31. Preferably, the blades 32 are made of rubber. The fan blades 26 are placed inside the box body 1, above the cane shaking roller 3, and the air outlet 14 is above the fan blades 26.

[0030] When working, the whole cane without impurity removal is cut by the cutting knife box 4 and then falls into the feed inlet 11 through the discharge end of the cutting knife box 4 and enters the box body 1. The cane segments fall on the cane shaking roller 3 below the feed inlet 11. The cane shaking roller 3 rotates to lift the cane segments falling on it. The lifted cane segments are blown by the fan blades 26 above, and the cane leaves or other impurities entrained on the cane segments are blown off. The swirling wind formed by the blowing of the fan blades 26 is discharged from the air outlet 14 above the fan blades 26. The cane segments after impurity removal by blowing fall to the discharge outlet 12 of the box body below and are discharged out of the box body 1 from the discharge outlet 12. The rubber blades on the cane shaking roller 3 can avoid damage caused by the impact force of the cane segments falling on the cane shaking roller 3. At the same time, the blades 32 made of rubber material also have a certain elasticity, so that the cane segments falling on the upper part bounce up under the impact force, improving the impurity removal efficiency.

[0031] The foregoing description of the specific exemplary embodiments of the present utility model is for purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A blower for sugarcane cutting and impurity removal equipment, characterized in that: It includes a box body and a gearbox, wherein the gearbox is arranged on the box body; the gearbox includes: A clutch assembly connected to a power assembly of the debris removal device; A clutch shaft, which is connected to the clutch assembly and arranged transversely, and is used to output power, and a main bevel gear is sleeved on the clutch shaft; and A descending spline shaft is longitudinally arranged directly below the clutch shaft and is perpendicular to the clutch shaft. A slave bevel gear is sleeved on the upper end of the descending spline shaft. The slave bevel gear and the main bevel gear are meshed with each other for transmission. A fan blade is arranged on the lower end of the descending spline shaft. Wherein, the number of teeth of the main bevel gear is greater than the number of teeth of the slave bevel gear.

2. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 1 is characterized in that: A release bearing is provided between the clutch assembly and the clutch shaft, and the release bearing is used to control the cutting off or opening of the clutch shaft.

3. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 1 is characterized in that: The clutch shaft is arranged in a gearbox housing, mounting bearing seats are arranged on both sides of the gearbox housing, and the gearbox housing is arranged on a fan mounting plate.

4. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 3 is characterized in that: The upper end of the descending spline shaft is arranged on the output bearing seat, and the output bearing seat is arranged on the fan mounting plate. The lower end of the descending spline shaft is provided with a fan shaft sleeve, and the fan shaft sleeve is used to install the fan blades of the exhaust fan.

5. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 4 is characterized in that: The outer sleeve of the downward spline shaft is provided with an downward outer sleeve, and the fan blade sleeve is connected to the downward outer sleeve via a connecting flange.

6. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 5, characterized in that: The downward spline shaft is sleeved with an downward inner sleeve, and the downward inner sleeve is fixed on the fan mounting plate; wherein both ends of the downward outer sleeve are assembled on the downward inner sleeve through bearings.

7. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 1, characterized in that: The box body is provided with a feed port, a feed port, an air inlet and an air outlet, and a cane shaking roller is provided below the feed port. The cane shaking roller includes a rotating shaft and blades. The rotating shaft is rotatably arranged laterally on the box body, and a plurality of blades are evenly distributed on the rotating shaft. The fan blades are placed in the box body, above the cane shaking roller.

8. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 7, characterized in that: The side of the box body is provided with a material feed port, the bottom is provided with a material discharge port, the side of the upper part is provided with an air outlet, and the lower part is provided with an air inlet.

9. The exhaust fan for sugarcane cutting and impurity removal equipment according to claim 7, characterized in that: The blades on the rotating shaft are made of rubber material.

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