CN216930952U - Stepless speed regulation fan for multifunctional grain combine harvester - Google Patents
Stepless speed regulation fan for multifunctional grain combine harvester Download PDFInfo
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- CN216930952U CN216930952U CN202122316491.9U CN202122316491U CN216930952U CN 216930952 U CN216930952 U CN 216930952U CN 202122316491 U CN202122316491 U CN 202122316491U CN 216930952 U CN216930952 U CN 216930952U
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Abstract
The utility model discloses a stepless speed regulating fan for a multifunctional grain combine harvester, which is a cross flow fan and specifically comprises a stepless speed regulating mechanism, wherein the stepless speed regulating mechanism is arranged at one end part of a blade rotor mechanism, the blade rotor mechanism is arranged in a fan shell mechanism, and an air outlet direction regulating mechanism is arranged at an air outlet of the fan shell mechanism; the stepless speed regulating mechanism comprises an active speed changing wheel and a passive speed changing wheel, the active speed changing wheel is fixed on a shaft head of the main transmission shaft, the passive speed changing wheel is fixed on a shaft head of the fan shaft, and a belt is wound in a V-shaped gap between the active speed changing wheel and the passive speed changing wheel. The utility model provides a stepless speed regulation fan for a multifunctional grain combine harvester, which is not influenced by the width of the machine, can generate good air flow distribution and has simple and economic structure; the stepless speed regulation function is provided, the requirements of different crops on the rotating speed of the fan can be met, and the adaptability of the harvester is improved.
Description
Technical Field
The utility model relates to a stepless speed regulation fan for a multifunctional grain combine harvester, and belongs to the technical field of agricultural machinery.
Background
The inside top-down divide into threshing system, screening system and fan system in proper order of cereal combine, and the effect of fan system is towards the continuous wind of harvester afterbody, and the wind that blows out passes through the district that drops of crop seed grain and the mesh sifter in the screening system, blows off miscellaneous surplus such as garrulous grass, fine hair that will be lighter than crop seed grain weight to harvester afterbody opening to collect the crop seed grain that the cleanliness is high.
Along with the development of grain combine harvester to high efficiency, upsizing for combine harvester cleaning part width increases, and traditional centrifugal or axial fan receives the influence of machine width, has the problem such as horizontal air current uneven distribution, structural dimension is big and power consumption is big, direct influence grain cleaning quality and efficiency.
Meanwhile, the rotating speed of the fan of the current grain combine harvester is mostly fixed or can only be adjusted by a plurality of rotating speeds, stepless speed regulation cannot be realized, and meanwhile, the adjusting method is complicated and cannot meet the requirements of harvesting operation.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the background technology, the utility model provides the stepless speed regulation fan for the multifunctional grain combine harvester, the fan is not influenced by the width of the machine, can generate good air flow distribution, and has simple and economic structure; the stepless speed regulation function is provided, the transmission ratio between the driving transmission wheel and the driven transmission wheel can be conveniently changed, and the stepless regulation of the air quantity of the fan is realized, so that the requirements of different crops on the rotating speed of the fan are met, and the adaptability of the harvester is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a stepless speed regulating fan for a multifunctional grain combine harvester is a cross flow fan and specifically comprises a stepless speed regulating mechanism, wherein the stepless speed regulating mechanism is arranged at one end part of a blade rotor mechanism, the blade rotor mechanism is arranged in a fan shell mechanism, and an air outlet wind direction regulating mechanism is arranged at an air outlet of the fan shell mechanism;
the stepless speed regulating mechanism comprises an active speed changing wheel and a passive speed changing wheel, the active speed changing wheel is fixed on a shaft head of the main transmission shaft, and the passive speed changing wheel is fixed on a shaft head of the fan shaft;
the active speed change wheel comprises an active speed change wheel fixed disc and an active speed change wheel movable disc, and a V-shaped gap is formed between the active speed change wheel fixed disc and the active speed change wheel movable disc; the passive variable-speed wheel comprises a passive variable-speed wheel fixed disc and a passive variable-speed wheel movable disc, and a V-shaped gap is formed between the passive variable-speed wheel fixed disc and the passive variable-speed wheel movable disc; and a belt is wound in the V-shaped gap between the driving variable-speed wheel and the driven variable-speed wheel.
Furthermore, a bearing seat, a bearing thrust seat and an adjusting screw rod are sequentially arranged on one side, away from the active speed change wheel fixed disc, of the active speed change wheel movable disc, and a tapered roller bearing is assembled between the bearing seat and the bearing thrust seat; the adjusting screw rod penetrates through the adjusting support, the adjusting support is fixedly arranged, and the adjusting screw rod is further meshed with an anti-loosening adjusting handle.
Furthermore, a compression spring and a spring gland are arranged on one side, away from the driven variable-speed wheel fixed plate, of the driven variable-speed wheel movable plate.
Furthermore, the fan shell mechanism comprises a fan shell body with a volute structure, a blade rotor mechanism is mounted in the fan shell body, and an air outlet baffle plate capable of being transversely adjusted is arranged between the fan shell body and the blade rotor mechanism; and a rubber sealing plate is arranged between the air outlet of the fan shell body and the step sieve of the whole harvester.
Furthermore, the air outlet direction adjusting mechanism comprises a middle supporting plate, two sides of the middle supporting plate are respectively provided with an air adjusting plate, and the two air adjusting plates are fixedly connected through a connecting rod; the outer end of one of the air adjusting plates is provided with an air direction adjusting handle, and the outer end of the other air adjusting plate is provided with a tail end supporting rod.
Furthermore, the wind direction adjusting handle is matched with a positioning plate, and the positioning plate is fixedly connected to the outer wall of the main body of the fan shell; the positioning plate is provided with a plurality of air adjusting positioning holes, and the interval between every two adjacent holes is 15 degrees.
Furthermore, the tail end supporting rod is sequentially sleeved with a limiting spring, a spring pressing plate and a split pin.
Furthermore, the blade rotor mechanism comprises a fan shaft, two groups of fan rotor assemblies which are arranged in bilateral symmetry are mounted on the fan shaft, and the left and right groups of fan rotor assemblies respectively comprise an outer side amplitude disc, a middle amplitude disc, an inner side amplitude disc and blades.
Furthermore, the angle of the outer side amplitude disc and the angle of the middle amplitude disc are staggered by 5 degrees, the angle of the middle amplitude disc and the angle of the inner side amplitude disc are staggered by 5 degrees, and the angle of the outer side amplitude disc and the angle of the inner side amplitude disc are staggered by 10 degrees.
Further, the blade is arc-shaped.
After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:
the stepless speed change device and the wind direction adjusting device are arranged, so that the stepless adjustment of the rotating speed of the fan can be realized, and the wind direction can be adjusted, so that the requirements of different crops such as corn, soybean, wheat, rice and the like on the rotating speed of the fan are met, the adaptability of the cleaning system of the harvester to different crops is realized, and the adaptability of the harvester is improved;
the fan is a cross flow fan, the fan is not influenced by the width of the machine, good airflow distribution can be generated, the structure is simple, the performance is reliable, and the use is economical and practical;
in general, the cross flow fan has higher performance coefficient than a centrifugal fan or an axial flow fan except for the highest efficiency, so that the diameter of an impeller of the cross flow fan can be a small value and the rotating speed can be lower on the premise of meeting the same performance requirement, and the volume and the mass of the fan can be reduced.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a stepless speed regulating mechanism according to the present invention;
FIG. 3 is a schematic view of the fan housing mechanism of the present invention;
FIG. 4 is a schematic view of an air outlet direction adjusting mechanism according to the present invention;
fig. 5 is a schematic view of a vane rotor mechanism of the present invention.
In the figure, 1-a stepless speed regulating mechanism, 11-an active variable wheel fixed disc, 12-an active variable wheel movable disc, 13-a bearing seat, 14-a tapered roller bearing, 15-a bearing thrust seat, 16-an adjusting screw rod, 17-an adjusting bracket, 18-an anti-loosening adjusting handle, 19-a belt, 110-a passive variable wheel fixed disc, 111-a passive variable wheel movable disc, 112-a compression spring and 113-a spring gland;
2-a fan shell mechanism, 21-a fan shell body, 22-an air outlet baffle, 23-a rubber sealing plate, 24-an air outlet wind direction adjusting mechanism, 241-a wind direction adjusting handle, 242-a positioning plate, 243-an air adjusting plate, 244-a middle supporting plate, 245-a connecting rod, 246-a limiting spring, 247-a spring pressing plate, 248-a tail end supporting rod and 249-a split pin;
3-blade rotor mechanism, 31-fan shaft, 32-outer side radial disc, 33-middle radial disc, 34-inner side radial disc and 35-blade;
4-left side fixed support; 5-right side fixed support.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1-5, the utility model provides a stepless speed regulation fan for a multifunctional grain combine harvester, wherein the fan is a cross flow fan, and specifically comprises a stepless speed regulation mechanism 1, the stepless speed regulation mechanism 1 is installed at one end part of a blade rotor mechanism 3, the blade rotor mechanism 3 is installed inside a fan shell mechanism 2, and an air outlet direction regulation mechanism 24 is installed at an air outlet of the fan shell mechanism 2.
The stepless speed regulating mechanism 1 comprises an active speed changing wheel and a passive speed changing wheel, the active speed changing wheel is fixed on a shaft head of a main transmission shaft, the passive speed changing wheel is fixed on a shaft head of a fan shaft 31, and the active speed changing wheel and the passive speed changing wheel are connected through a belt 19.
The active speed change wheel comprises an active speed change wheel fixed disc 11 and an active speed change wheel movable disc 12, and a V-shaped gap is formed between the active speed change wheel fixed disc 11 and the active speed change wheel movable disc 12; the passive speed change wheel comprises a passive speed change wheel fixed disc 110 and a passive speed change wheel movable disc 111, and a V-shaped gap is formed between the passive speed change wheel fixed disc 110 and the passive speed change wheel movable disc 111; a belt 19 is wound in the V-shaped gap between the driving variable-speed wheel and the driven variable-speed wheel.
And a bearing seat 13, a bearing thrust seat 15 and an adjusting screw rod 16 are sequentially arranged on one side of the active speed change wheel movable disc 12, which is far away from the active speed change wheel fixed disc 11.
A tapered roller bearing 14 is assembled between the bearing seat 13 and the bearing thrust seat 15; the adjusting screw rod 16 is coaxially arranged with the main transmission shaft, the adjusting screw rod 16 penetrates through the adjusting bracket 17, and the adjusting bracket 17 is fixedly arranged; the adjusting screw rod 16 is also engaged with an anti-loosening adjusting handle 18, and the anti-loosening adjusting handle 18 plays a role in preventing the adjusting screw rod 16 from loosening.
The distance between the fixed plate 11 of the active change wheel and the movable plate 12 of the active change wheel can be adjusted by the rotation of the adjusting screw rod 16, when the distance changes, the position of the belt 19 in the V-shaped gap of the active change wheel changes, so that the transmission ratio between the active change wheel and the passive change wheel is changed, and the stepless adjustment of the air quantity of the fan of the harvester is realized.
The side of the driven variable-speed wheel movable disk 111, which is far away from the driven variable-speed wheel fixed disk 110, is provided with a compression spring 112 and a spring gland 113, the compression spring 112 and the spring gland 113 play a role of a clutch, when the transmission power is overlarge or the fan load is overlarge, the compression spring 112 is compressed, the distance between the driven variable-speed wheel movable disk 111 and the driven variable-speed wheel fixed disk 110 is increased, the belt 19 is loosened to stop transmission, and the function of protecting the fan is achieved.
The stepless speed regulating mechanism 1 can realize the purpose of regulating the rotating speed of the fan within a certain range, thereby meeting the requirements of different crops such as corn, soybean, wheat, rice and the like on the rotating speed of the fan.
The fan shell mechanism 2 comprises a fan shell body 21 of a volute structure, a blade rotor mechanism 3 is arranged in the fan shell body 21, and the fan shell body 21 collects gas leaving the blades 35 and guides the gas to the outlet of the volute; an air outlet baffle 22 capable of being transversely adjusted is arranged between the fan shell body 21 and the blade rotor mechanism 3, and the air outlet baffle 22 can be used for adjusting the gap between the blade rotor mechanism 3 and the volute to the minimum so as to prevent air in the volute from blowing out.
Install rubber seal plate 23 between the air outlet of fan casing main part 21 and the harvester complete machine ladder sieve, rubber seal plate 23 is used for guaranteeing that weeds, fine hair etc. that are lighter than crop seed grain weight can both fall into the air outlet front end, is blown to the tail by wind.
The air outlet direction adjusting mechanism 24 includes a middle support plate 244, two sides of the middle support plate 244 are respectively provided with an air adjusting plate 243, the two air adjusting plates 243 are fixedly connected through a connecting rod 245, and the air adjusting plates 243 can be hinged to rotate along the connecting rod 245.
The outer end of one of the air adjusting plates 243 is provided with an air direction adjusting handle 241, the outer end of the other air adjusting plate 243 is provided with a terminal supporting rod 248, and the air direction adjusting handle 241 and the terminal supporting rod 248 are arranged on the fan shell body 21 in a penetrating mode.
The wind direction adjusting handle 241 is matched with the positioning plate 242, and the positioning plate 242 is fixedly connected to the outer wall of the fan shell body 21; the positioning plate 242 has 5 air-adjusting positioning holes, and the interval between two adjacent holes is 15 °.
During normal operation, the wind direction adjusting handle 241 is located on the circular hole at the middle of the positioning plate 23, and can be adjusted upwards or downwards by 15 degrees or 30 degrees according to requirements.
The limiting spring 246, the spring pressing plate 247 and the split pin 249 are sequentially sleeved on the tail end supporting rod 248, the limiting spring 246, the spring pressing plate 247 and the split pin 249 can limit the whole mechanism, the air adjusting plate 243 can be fixed at a certain angle and is fixed, and optimal angle adjustment is achieved.
The blade rotor mechanism 3 comprises a fan shaft 31, two groups of fan rotor assemblies which are arranged in bilateral symmetry are mounted on the fan shaft 31, and the left and right groups of fan rotor assemblies respectively comprise 1 outer side amplitude disc 32, 1 middle amplitude disc 33, 1 inner side amplitude disc 34 and 36 blades 35.
The angle of the outer side breadth disc 32 and the middle breadth disc 33 is staggered by 5 degrees, the angle of the middle breadth disc 33 and the inner side breadth disc 34 is staggered by 5 degrees, and the angle of the outer side breadth disc 32 and the inner side breadth disc 34 is staggered by 10 degrees. The installation form can ensure that the angles of the middle part and the two ends of the blade rotor mechanism 3 are staggered by 10 degrees, and can ensure that the wind speed of the middle part of the fan is higher and the wind power is stronger.
The blade 35 is arc-shaped, the radius of the arc is 35mm, and the arc-shaped blade 35 can obtain better mechanical property than a straight plate-shaped blade.
The two ends of the blade rotor mechanism 3 and the two ends of the fan shell mechanism 2 are fixedly connected through a left side fixed supporting piece 4 and a right side fixed supporting piece 5; the left side fixing and supporting piece 4 and the right side fixing and supporting piece 5 can combine the blade rotor mechanism 3 and the fan shell mechanism 2 into a whole, and fix the whole fan system on the whole multifunctional grain combine harvester.
The specific working principle of the utility model is as follows:
the stepless speed change device and the wind direction adjusting device are arranged, so that the stepless adjustment of the rotating speed of the fan can be realized, and the wind direction can be adjusted, so that the requirements of different crops such as corn, soybean, wheat, rice and the like on the rotating speed of the fan are met, the adaptability of the cleaning system of the harvester to different crops is realized, and the adaptability of the harvester is improved;
the fan is a cross flow fan, can not be influenced by the width of the machine, can generate good air flow distribution, and has the advantages of simple structure, reliable performance and economical and practical use;
in general, the cross flow fan has higher performance coefficient than a centrifugal fan or an axial flow fan except for the highest efficiency, so that the diameter of an impeller of the cross flow fan can be a small value and the rotating speed can be lower on the premise of meeting the same performance requirement, and the volume and the mass of the fan can be reduced.
The foregoing is illustrative of the best mode of the utility model and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.
Claims (10)
1. The utility model provides a multi-functional grain combine is stepless speed regulation fan for harvester, the fan is crossing current fan, its characterized in that: the fan blade rotor speed regulation device comprises a stepless speed regulation mechanism (1), wherein the stepless speed regulation mechanism (1) is arranged at one end part of a blade rotor mechanism (3), the blade rotor mechanism (3) is arranged inside a fan shell mechanism (2), and an air outlet direction regulation mechanism (24) is arranged at an air outlet of the fan shell mechanism (2);
the stepless speed regulating mechanism (1) comprises an active speed changing wheel and a passive speed changing wheel, the active speed changing wheel is fixed on a shaft head of the main transmission shaft, and the passive speed changing wheel is fixed on a shaft head of the fan shaft (31);
the active speed change wheel comprises an active speed change wheel fixed disc (11) and an active speed change wheel movable disc (12), and a V-shaped gap is formed between the active speed change wheel fixed disc (11) and the active speed change wheel movable disc (12); the passive speed change wheel comprises a passive speed change wheel fixed disc (110) and a passive speed change wheel movable disc (111), and a V-shaped gap is formed between the passive speed change wheel fixed disc (110) and the passive speed change wheel movable disc (111); a belt (19) is wound in the V-shaped gap between the driving variable-speed wheel and the driven variable-speed wheel.
2. The stepless speed regulation fan for the multifunctional grain combine harvester as claimed in claim 1, is characterized in that: a bearing seat (13), a bearing thrust seat (15) and an adjusting screw rod (16) are sequentially arranged on one side, away from the active speed change wheel fixed disc (11), of the active speed change wheel movable disc (12), and a tapered roller bearing (14) is assembled between the bearing seat (13) and the bearing thrust seat (15); adjusting screw (16) wear to establish in adjusting bracket (17), adjusting bracket (17) is fixed to be set up, and the last meshing of adjusting screw (16) has locking adjustment handle (18).
3. The stepless speed-regulating fan for the multifunctional grain combine harvester as claimed in claim 1, characterized in that: and a compression spring (112) and a spring gland (113) are arranged on one side of the driven variable-speed wheel movable disc (111) far away from the driven variable-speed wheel fixed disc (110).
4. The stepless speed regulation fan for the multifunctional grain combine harvester as claimed in claim 1, is characterized in that: the fan shell mechanism (2) comprises a fan shell body (21) of a volute structure, a blade rotor mechanism (3) is installed inside the fan shell body (21), and an air outlet baffle (22) capable of being adjusted transversely is arranged between the fan shell body (21) and the blade rotor mechanism (3); and a rubber sealing plate (23) is arranged between the air outlet of the fan shell body (21) and the step sieve of the whole harvester.
5. The stepless speed regulation fan for the multifunctional grain combine harvester as claimed in claim 1, is characterized in that: the air outlet direction adjusting mechanism (24) comprises a middle supporting plate (244), two sides of the middle supporting plate (244) are respectively provided with an air adjusting plate (243), and the two air adjusting plates (243) are fixedly connected through a connecting rod (245); the outer end of one of the air adjusting plates (243) is provided with a wind direction adjusting handle (241), and the outer end of the other air adjusting plate (243) is provided with a tail end support rod (248).
6. The stepless speed regulation fan for the multifunctional grain combine harvester as claimed in claim 5, is characterized in that: the wind direction adjusting handle (241) is matched with a positioning plate (242), and the positioning plate (242) is fixedly connected to the outer wall of the fan shell body (21); a plurality of air adjusting positioning holes are formed in the positioning plate (242), and the interval between every two adjacent holes is 15 degrees.
7. The stepless speed regulation fan for the multifunctional grain combine harvester as claimed in claim 5, is characterized in that: and the tail end supporting rod (248) is sequentially sleeved with a limiting spring (246), a spring pressing plate (247) and a split pin (249).
8. The stepless speed regulation fan for the multifunctional grain combine harvester as claimed in claim 1, is characterized in that: the blade rotor mechanism (3) comprises a fan shaft (31), two groups of fan rotor assemblies which are arranged in bilateral symmetry are mounted on the fan shaft (31), and the left and right groups of fan rotor assemblies respectively comprise an outer side amplitude disc (32), a middle amplitude disc (33), an inner side amplitude disc (34) and blades (35).
9. The stepless speed regulating fan for the multifunctional grain combine harvester as claimed in claim 8, characterized in that: the angle of the outer side breadth disc (32) and the middle breadth disc (33) is staggered by 5 degrees, the angle of the middle breadth disc (33) and the inner side breadth disc (34) is staggered by 5 degrees, and the angle of the outer side breadth disc (32) and the inner side breadth disc (34) is staggered by 10 degrees.
10. The stepless speed regulating fan for the multifunctional grain combine harvester as claimed in claim 8, characterized in that: the blades (35) are arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122316491.9U CN216930952U (en) | 2021-09-24 | 2021-09-24 | Stepless speed regulation fan for multifunctional grain combine harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122316491.9U CN216930952U (en) | 2021-09-24 | 2021-09-24 | Stepless speed regulation fan for multifunctional grain combine harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216930952U true CN216930952U (en) | 2022-07-12 |
Family
ID=82302553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122316491.9U Active CN216930952U (en) | 2021-09-24 | 2021-09-24 | Stepless speed regulation fan for multifunctional grain combine harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216930952U (en) |
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2021
- 2021-09-24 CN CN202122316491.9U patent/CN216930952U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Stepless Speed Regulating Fan for a Multifunctional Grain Combine Harvester Effective date of registration: 20230323 Granted publication date: 20220712 Pledgee: Gaomi Chaoyang sub branch of Bank of Weifang Co.,Ltd. Pledgor: Shandong Tiankai Zhongrui Machinery Technology Co.,Ltd. Registration number: Y2023980035686 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |