Cleaning and combine conveying system

Abstract

The invention relates to a cleaning and screening conveying system and a combine. The cleaning and screening conveying system includes an output pulley in a conveying connection with a motor, wherein the output pulley performs conveying in three directions, and the three-way conveying is distributed on a side wall surface of a frame. The first conveying path includes an output pulley, a first impact pulley, and a second impact pulley. The second transmission path includes the output pulley and the chopper pulley, and the third transmission path includes the output pulley, fan pulley, grain pulley, chaff pulley and screening pulley, and all pulleys are in the transmission connection. The input power of the threshing mechanism, the crushing mechanism, the wind separation mechanism, the grain storage mechanism, the chaff crushing mechanism and the screening mechanism of the harvester are all located on one side of the frame, which compacts the transmission system structure of the whole machine. All pulleys are located on one side, which facilitates installation, control and troubleshooting. In addition, the input force of each mechanism is directly supplied by the output pulley, thus avoiding the transmission loss caused by the intermediate transmission. The working load reduces the mechanism providing the intermediate transmission, and improves the transmission efficiency and service life of the entire device.

Description

CLEANING TRANSMISSION SYSTEM AND COMBINE HARVESTERTECHNICAL FIELD

[0001] The application relates to the technical field of agricultural machines, and in particular to a cleaning transmission system and a combine harvester.BACKGROUD

[0002] The combine harvester is a combined machine for harvesting crops, which can complete the processes of harvesting, threshing, separating stems and removing debris of cereal crops at one time, and obtain grains directly from the field. The combine harvester includes a harvesting mechanism, a threshing mechanism, a shredding mechanism, a screening mechanism, a wind separation mechanism, etc. The harvester outputs the power of the engine to each mechanism through the transmission system to complete the corresponding functions.

[0003] In the existing cleaning transmission system, the power inputs of various mechanisms are mostly distributed at different positions of the frame, and even the power inputs of some mechanisms are located inside the frame, which requires more labor and consumes more energy when installing, debugging and maintaining the transmission system, which undoubtedly increases the labor cost. At the same time, there is an intermediate transmission in the power input of each mechanism. For example, the shredding mechanism uses the threshing drum in the threshing mechanism for power transmission, and the threshing drum also provides power for the rotation of the shredding mechanism when threshing, which easily increases the load of the threshing drum and reduces the transmission efficiency and service life of the whole machine.SUMMARY

[0004] Therefore, the technical problem to be solved by the present application lies in overcoming the unreasonable layout, increased labor cost, existence of intermediate transmission, and low transmission efficiency of the whole machine of the cleaning transmission system in the prior art.

[0005] According to one aspect of the present application, a cleaning transmission system is provided, which includes:

[0006] an output pulley in transmission connection with an engine; wherein, the output pulley outputs with a three-way transmission; and the three-way transmission is distributed on a same side wall surface of a frame;

[0007] a first-way transmission includes the output pulley, a first threshing pulley and a second threshing pulley;

[0008] a second-way transmission includes the output pulley and a shredder pulley; and

[0009] a third-way transmission includes the output pulley, a fan pulley, a grain pulley, a debris pulley and a screening pulley; and all the pulleys are in transmission connection.

[0010] Preferentially, the cleaning transmission system further includes:

[0011] a first transition wheel, fixed on the frame and arranged between the output pulley and the shredder pulley; wherein, the output pulley is in transmission connection with the first transition wheel; and the first transition wheel is in transmission connection with the shredder pulley.

[0012] Preferentially, the cleaning transmission system further includes:

[0013] a second transition wheel, fixed on the frame and arranged in the third-way transmission; wherein, the output pulley, the fan pulley, the grain pulley, the second transition wheel and the debris pulley are in transmission connection; and the second transition wheel is in transmission connection with the screening pulley.

[0014] Preferentially, the three-way transmission adopts V-belt transmission connection.

[0015] Preferentially, the first threshing pulley and the second threshing pulley are connected by jointed belt transmission.

[0016] Preferentially, the cleaning transmission system further includes a plurality of tensioning assemblies distributed between adjacent pulleys and adapted to tension V-belts between the adjacent pulleys.

[0017] Preferentially, any one of the tensioning assemblies includes:

[0018] a tensioning arm, one end of which being hinged on the frame, and the other end of which being a free end;

[0019] a tensioning wheel, fixed on the free end of the tensioning arm; and

[0020] a pull rod, fixed on the frame; wherein

[0021] a tension spring is arranged between the pull rod and the tensioning arm; and

[0022] the tensioning wheel is tensioned and abutted on the V-belt by the biasing force of the tensioning spring.

[0023] Preferentially, a grain auger is arranged on the frame in a penetrating mode, one end of which being fixed with the grain pulley, and the other end of which being connected with a granary auger; wherein, a direction-changing gear box is arranged between the grain auger and the granary auger.

[0024] Preferentially, a debris auger is arranged on the frame in a penetrating mode, one end of which being fixed with the debris pulley, and the other end of which being connected with a rethreshing auger; wherein a direction-changing gearbox is arranged between the debris auger and the rethreshing auger.

[0025] According to the other aspect of the application, a combine harvester is provided, which includes the above-mentioned cleaning transmission system.

[0026] The technical solution of the application has the following advantages:

[0027] 1. The cleaning transmission system provided by the application includes an output pulley in transmission connection with an engine; wherein, the output pulley outputs with a three-way transmission; and the three-way transmission is distributed on a same side wall surface of a frame. The first-way transmission includes the output pulley, a first threshing pulley and a second threshing pulley; a second-way transmission includes the output pulley and a shredder pulley; and a third-way transmission includes the output pulley, a fan pulley, a grain pulley, a debris pulley and a screening pulley; and all the pulleys are in transmission connection. The power inputs of the threshing mechanism, the shredding mechanism, the wind separation mechanism, the grain warehousing mechanism, the debris rethreshing mechanism and the screening mechanism of the harvester are all arranged on the same side of the frame, which makes the structure of the transmission system of the whole machine compact. All the pulleys are arranged on the same side, which is convenient for installation, control and debugging. Moreover, the power input of each mechanism is directly provided by the output pulley, which avoids the transmission loss caused by the intermediate transmission, reduces the working load of the mechanism providing the intermediate transmission, and improves the transmission efficiency and service life of the whole machine.BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly explain the specific embodiments of the present application or the technical solution in the prior art, the drawings required for use in particular embodiments or prior art description will be briefly described below, and it will be apparent that the drawings in the following description are some embodiments of the present application, from which other drawings may be obtained without creative effort by those of ordinary skill in the art.

[0029] Fig.1 is a first structural schematic diagram of a cleaning transmission system in an embodiment of the present application.

[0030] Fig.2 is a structural schematic diagram of a tensioning assembly in an S part of the Fig.1.

[0031] Fig.3 is a second structural schematic diagram of the cleaning transmission system in the embodiment of the present application.

[0032] Description for symbols in the accompanying drawings:

[0033] 1. frame��1s. output pulley��10s. intermediate transmission shaft��11s. input pulley��2s. first threshing pulley��3s. second threshing pulley��4s. shredder pulley��51s. fan pulley��52s. grain pulley��521s. grain auger��522s. granary auger��53s. debris pulley��531s. debris auger��532s. rethreshing auger��6s. screening pulley��71s. first transition wheel��72s. second transition wheel��81s. tensioning arm��82s. tensioning wheel��83s. pull rod��84s. tensioning spring��9s. direction-changing gearbox.DETAILED DESCRIPTION

[0034] A clear and complete description of the technical solution of the present application will be given below in conjunction with the accompanying drawings and it will be apparent that the described embodiments are part of and not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that a directional or positional relationship indicated by terms such as ��center��, ��upper��, ��lower��, ��left��, ��right��, ��vertical��, ��horizontal��, ��inner��, and ��outer�� is based on a directional or positional relationship shown as the accompanying drawings and is merely intended to facilitate describing the present application and simplifying the description, rather than to indicate or imply that the referred device or element has to be located in a specific direction or constructed and operated in the specific direction so as not to be understood as a restriction on the present application. In addition, terms such as "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying the relative importance.

[0036] In the present application, terms ��mounted��, ��connected��, ��connection�� and the like should be understood in a broad sense unless otherwise specified and defined, for example, ��connection�� may be fixed connection or detachable connection or integrated connection, may be mechanical connection or electrical connection, may be direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements. For those of ordinary skilled in the art, the specific meanings of the above terms in the present application may be understood according to specific situations.

[0037] Further, the technical features described below in various embodiments of the present application may be combined with each other as long as they do not conflict with each other.

[0038] Embodiment 1

[0039] The embodiment provides a cleaning transmissionsystem, as shown in the Fig. 1, the system includes an output pulley 1s in transmission connection with an engine; wherein the output pulley 1s outputs with a three-way transmission, and the three-way transmission is distributed on a same side wall surface of a frame 1.

[0040] In the embodiment, an intermediate transmission shaft 10s is rotatably arranged in two bearing seats at the front end of the frame 1, and one end of which is fixed with an input pulley 11s which is in transmission connection with an engine (not shown in the figure) on the frame 1 through a main clutch belt, and the other end of which is fixed with the output pulley 1s for transmission connection with other power mechanisms of the harvester, and the other power mechanisms include a threshing mechanism, a shredding mechanism, a wind separation mechanism, a grain warehousing mechanism, a debris rethreshing mechanism, a screening mechanism, and the like. The output pulley 1s is a multi-groove pulley, and the output pulley 1s may also be composed of a plurality of multi-groove pulleys which are fixed at one end of the intermediate transmission shaft 10s at the same time, and is suitable for rotating with the intermediate transmission shaft 10s. In the embodiment, the output pulley 1s is connected with the pulleys in other power mechanisms by V-belt transmission. Of course, chains can also be used, but the stability of chain transmission is not as good as that of the V-belt. Secondly, when the threshing drum is blocked, causing the drum cover and other components to be damaged by expansion and cracking, the chains may not be broken, and the power is still transmitted, which is easy to cause component damage. However, when the above situation occurs in V-belt transmission, the V-belt will slip, or be burnt, and the like, which will affect the normal operation, so that the user is reminded to stop the machine in time and then perform cleaning, repair and replacement, and other components will not be damaged, so the V-belt transmission is preferred.

[0041] As shown in the Fig. 1, the first-way transmission includes the output pulley 1s, a first threshing pulley 2s and a second threshing pulley 3s. The output pulley 1s and the first threshing pulley 2s are in transmission connection by three C-shaped V-belts, so that the overall cross section of the V-belts is enlarged and the transmission power is improved. The first threshing pulley 2s and the second threshing pulley 3s are in transmission connection by a 2HB combined belt. The combined belt can fit well with the pulley, is stressed evenly, and has good transmission stability and impact resistance, so as to adapt to the high-strength working environment of the threshing drum.

[0042] The second-way transmission includes the output pulley 1s and a shredder pulley 4s.The shredder is generally arranged at the tail end of the frame 1 and has a large span with the output pulley 1s. Therefore, a first transition wheel 71s is fixed on the frame 1 between the output pulley 1s and the shredder pulley 4s to form a two-stage transmission. The first transition wheel 71s is rotatably arranged on the frame 1 by a mounting frame, and is located on the connection line between the output pulley 1s and the shredder pulley 4s. The first transition wheel 71s adopts a multi-groove pulley. The output pulley 1s is in transmission connection with the first transition wheel 71s, and the first transition wheel 71s is in transmission connection with the shredder pulley 4s.

[0043] The third-way transmission includes the output pulley 1s, a fan pulley 51s, a grain pulley 52s, a debris pulley 53s and a screening pulley 6s. Since there are many transmission components and a large transmission span in the third-waytransmission, a second transition wheel 72s is arranged in the third-way transmission, and the transmission is also divided into two stages. The first-stagetransmission is the transmission connection among the output pulley 1s, the fan pulley 51s, the grain pulley 52s, the second transition wheel 72s and the debris pulley 53s, and the second-stage transmission is the transmission connection between the second transition wheel 72s and the screening pulley 6s. In order to ensure that the rotation directions of the screening pulley 6s and the output pulley 1s are opposite, the second transition wheel 72s adopts a multi-groove pulley. In the first-stage transmission, the outer side surface of the V-belt is in contact with the wheel groove surface of the second transition wheel 72s, so that the rotation direction of the second transition wheel 72s is opposite to the rotation direction of the output pulley, so that the rotation direction of the screening pulley 6s, which is in transmission connection with the second transition wheel 72s, is opposite to the rotation direction of the output pulley 1s.

[0044] In the embodiment, a tensioningassembly is installed between adjacent pulleys, as shown in the Fig. 2, and any one of the tensioning assemblies includes a tensioning arm 81s, a tensioning wheel 82s, a pull rod 83s and a tension spring 84s. In this embodiment, the tensioning arm 81s has a triangular structure, one corner of the triangle is hinged and installed on the frame 1, the other two corners are free ends, the tensioning wheel 82s is rotatably mounted at one free end, and a tensioning spring 84s is arranged between the other free end and the pull rod 83s, the pull rod 83s is fixed to the frame 1, and the tensioning wheel 82s is located between a hinge point of the tensioning arm 81s on the frame 1 and a fixed point of the pull rod 83s on the frame 1, so that under normal conditions, the tensioning wheel 82s is tensioned and abutted on the V-belt by the biasing force of the tensioning spring 84s.

[0045] As shown in the Fig. 3, in the embodiment, a grain auger 521s is arranged on the bottom of the frame 1 in a horizontally penetrating mode, one end of which being fixed with the grain pulley 52s, and the other end of which being connected with a granary auger 522s via a direction-changing gear box 9s; the granary auger 522s is a lifting auger in the vertical direction, which is suitable for lifting the grains transported by the lower grain stringer 521s upward and making the grains enter the granary from the upper inlet of the granary. The debris auger 531s is arranged on the bottom of the frame 1 in a horizontally penetrating mode, one end of which being fixed with the debris pulley 53s, and the other end of which being connected with a rethreshing auger 532s through the direction-changing gearbox 9s. The rethreshing auger 532s is a lifting auger inclined in the vertical direction, which is suitable for lifting the debris carrying grains transported by the lower debris auger 531s upward to the threshing drum for re-threshing, so as to avoid grain waste. The power of grain entering and re-threshing is provided by the output pulley 1s, and the structure is simple and compact.

[0046] The power inputs of the threshing mechanism, the shredding mechanism, the wind separation mechanism, the grain warehousing mechanism, the debris rethreshing mechanism and the screening mechanism of the harvester are all arranged on the same side of the frame 1, which makes the structure of the transmission system of the whole machine compact. All the pulleys are arranged on the same side, which is convenient for installation, control and debugging. Moreover, the power input of each mechanism is directly provided by the output pulley 1s, which avoids the transmission loss caused by the intermediate transmission, reduces the working load of the mechanism providing the intermediate transmission, and improves the transmission efficiency and service life of the whole machine.

[0047] Embodiment 2

[0048] The embodiment provides a combine harvester, including the cleaning transmission system in the embodiment 1.

[0049] Apparently, the above-described embodiments are merely examples for clarity of illustration and are not limited to implementations. Other variations or alterations in different forms may be made on the basis of the above description for those of ordinary skill in the art. All the embodiments need not and cannot be exhaustive here. The obvious variations or alterations arising therefrom are still within the scope of protection of this application.

Claims

Claim 1. A cleaning conveying system comprising: an output pulley (1s) in transmissive connection with a motor; wherein the output pulley (1s) performs the conveying output in three directions and the three-way conveying is distributed on a side wall surface of the frame (1), the first conveying path includes an output pulley (1s), a first threshing pulley (2s) and a second threshing pulley (3s). The second conveying path includes an output pulley (1s) and a chopper pulley (4s), and the third conveying path includes an output pulley (1s), a fan pulley (51s), a grain pulley (52s), a chaff pulley (53s) and a screening pulley (6s), and all the pulleys are in transmissive connection. A waste winch (531s) is located on the frame (1) in a penetrating manner, one end of which is fixed to a waste pulley (53s) and the other end is connected to a release winch (532s), in which a direction change gearbox (9s) is placed between the waste winch (531s) and the release winch (532s). 2.The cleaning conveying system according to claim 1 is characterized in that it comprises: a first conveying pulley (71s) fixed to the frame (1) and positioned between the output pulley (1s) and the chopper pulley (4s), wherein the output pulley (1s) is in transmissive connection with the conveying pulley (71s) and the first conveying pulley (71s) is in transmissive connection with the chopper pulley (4s).

3. The cleaning conveying system according to claim 1 is characterized in that it comprises: a second conveying pulley (s72) fixed to the frame (1) and located in a third conveying path, in which the outlet pulley (1s), the fan pulley (51s), the grain pulley (52s), the second conveying pulley (72s) and the chaff pulley (53s) are in conveying connection, and the second conveying pulley (72s) is in conveying connection with the screening pulley (6s).

4. The cleaning transmission system according to any one of claims 1-3 is characterized in that a three-way transmission adopts a V-shaped transmission belt connection.

5. The cleaning conveying system according to claim 4 is characterized in that the first impacting pulley (2s) and the second impacting pulley (3s) are connected by a common conveying belt.

6. The cleaning conveying system according to claim 4 is characterized in that it comprises a plurality of tension assemblies distributed between adjacent pulleys and adapted to tension V-belts between adjacent pulleys.

7. The cleaning conveying system according to claim 6 is characterized in that each of the tension assemblies comprises: a tension arm (81s) having one end hinged to the frame (1) and the other end being a free end. Tension pulleys (82s) are fixed to the free ends of the tension arms (81s); a tension rod (83s) fixed to the frame (1) in which a tension spring (s84) is interposed between the tension rod (s83) and the tension arm (s81), and the tension pulleys (82s) are pulled and tightened against the V-belt under the bias pressure of the tension spring (s84).

8. The cleaning conveying system according to claim 4 is characterized in that a grain winch (521s) is located on the frame (1) in a penetrating manner, one end of which is fixed to a grain pulley (52s) and the other end is connected to a tank winch (522s), in which a direction change gearbox (9s) is arranged between the grain winch (521s) and the tank winch (522s).

9. A combine harvester characterized in that it comprises a cleaning transfer system according to any one of claims 1-8.

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