CN109076795A

CN109076795A - Harvester centrifugal fan electric speed regulation mechanism

Info

Publication number: CN109076795A
Application number: CN201810051661.5A
Authority: CN
Inventors: 吴剑兴
Original assignee: Jiangsu World Agricultural Machinery Co Ltd
Current assignee: Jiangsu World Agricultural Machinery Co Ltd
Priority date: 2018-01-19
Filing date: 2018-01-19
Publication date: 2018-12-25

Abstract

The present invention relates to field of agricultural machinery, especially harvester centrifugal fan electric speed regulation mechanism, including automatically controlled transmission module and fan speed adjusting device, automatically controlled transmission module includes bottom plate, motor, sector rack and angular transducer, transmission gear is engaged with sector rack, sector rack is equipped with the first connecting hole and the second connecting hole, and the bull stick of angular transducer passes through the first connecting hole；Fan speed adjusting device includes the first helical teeth sliding block, the second helical teeth sliding block, speed belt wheel Moving plate and speed regulation belt wheel price fixing, first helical teeth sliding block is fixed by bolts on the connecting plate of fan, first helical teeth sliding block and the second helical teeth sliding block flank of tooth are installed in opposite directions and are intermeshed, second helical teeth sliding block is freely socketed on fan shaft and rotates relative to the first helical teeth sliding block, the connection of one end of second helical teeth sliding block and pull rod, the other end of pull rod is connect with the second connecting hole, and the present invention can solve the problem of manually changing more time-consuming rotation speed of the fan and inefficiency in the prior art.

Description

Harvester centrifugal fan electric speed regulation mechanism

Technical field

The present invention relates to field of agricultural machinery, specific field is harvester centrifugal fan electric speed regulation mechanism.

Background technique

The most commonly used is the mode of selection by winnowing and screening cooperation, the cooperations of air-flow to blow clear sundries for the clear grain mode of harvester From compass screen surface, outside blowout machine, be conducive to the separation of grain, but wind speed is excessive too small all bad, excessive easy loss grain, it is too small Sundries is more, is frequently necessary to adjust rotation speed of the fan size according to the actual situation in actual use.

Tradition, which changes rotation speed of the fan, to be realized by manually adjusting fan belt wheel construction, specifically, increase and decrease Moving plate After gasket quantity between price fixing, thus it is possible to vary the gap between Moving plate and price fixing, when gap becomes smaller, belt is in pulley groove On move up, transmission radius increase, when gap becomes smaller, belt moves down on pulley groove, transmission radius reduce, transmission radius with turn Speed is in inverse ratio, and rotation speed of the fan also accordingly changes while changing transmission radius, and this mode for changing rotation speed of the fan needs manually It is manually operated and relatively time-consuming, and in actually harvesting, it can be frequently necessary to according to actual effect adjusting pad piece quantity, using this The traditional mode of kind changes rotation speed of the fan can be fairly time consuming, influences the efficiency of harvesting.

Summary of the invention

The purpose of the present invention is to provide harvester centrifugal fan electric speed regulation mechanisms, to solve artificial hand in the prior art Dynamic the problem of changing more time-consuming rotation speed of the fan and inefficiency.

To achieve the above object, the invention provides the following technical scheme: harvester centrifugal fan electric speed regulation mechanism, including Automatically controlled transmission module and fan speed adjusting device, the automatically controlled transmission module include bottom plate, motor, sector rack and angle sensor Device, the motor and sector rack are installed on bottom plate, and the angular transducer is installed on the upper of sector rack by mounting plate It is square, transmission gear is housed, the transmission gear is engaged with sector rack, set on the sector rack on the output shaft of the motor There are the first connecting hole and the second connecting hole, the bull stick of the angular transducer passes freely through the first connecting hole；

The fan speed adjusting device includes the first helical teeth sliding block being sequentially arranged on fan shaft, the second helical teeth sliding block, adjusts Speed belt wheel Moving plate and speed regulation belt wheel price fixing, the first helical teeth sliding block is fixed by bolts on the connecting plate of fan, and described the One helical teeth sliding block and the second helical teeth sliding block flank of tooth are installed in opposite directions and are intermeshed, and the second helical teeth sliding block is freely socketed in fan It is rotated on axis and relative to the first helical teeth sliding block, one end of the second helical teeth sliding block and pull rod connects, the other end of the pull rod It is connect with the second connecting hole.

Preferably, the speed belt wheel Moving plate is connect by Moving plate bolt with speed regulation belt wheel price fixing, the Moving plate bolt packet Include nut and screw rod, screw rod is equipped with external thread section and non-threaded section, the external thread section between nut and non-threaded section, The external thread section is threadedly coupled with speed regulation belt wheel price fixing, and the speed belt wheel Moving plate is set on non-threaded section.

It preferably, further include end ring, the end ring is socketed on the outer ring of speed belt wheel Moving plate installation axle and card It is connected in the second helical teeth sliding block inner ring.

Preferably, dirt-proof boot is equipped between the first helical teeth sliding block and the second helical teeth sliding block.

Compared with prior art, the beneficial effects of the present invention are: pulling the second helical teeth module tune by automatically controlled transmission module The spacing of whole two helical teeth modules makes belt at this to change speed belt wheel Moving plate and adjust the speed the gap between belt wheel price fixing Gap occurs upper and lower displacement and uses harvester centrifugal fan electric adjustable provided by the invention to change the size of rotation speed of the fan When fast institutional adjustment rotation speed of the fan, not needing to get off dismounts gasket, and mode of operation is convenient and quick, and the operating time is greatly saved, Improve operating efficiency.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is automatically controlled transmission module structural schematic diagram in the present invention；

Fig. 3 is fan speed adjusting device structural schematic diagram in the present invention；

Fig. 4 is Fig. 2 along A-A sectional view；

Fig. 5 is fan speed adjusting device decomposition diagram in the present invention；

Fig. 6 is the first helical teeth sliding block and the second helical teeth slide block structure schematic diagram in the present invention.

In figure: 1 automatically controlled transmission module, 11 motors, 12 transmission gears, 13 sector racks, 131 first connecting holes, 132 second Connecting hole, 14 angular transducers, 141 bull sticks, 2 fan speed adjusting devices, 21 first helical teeth sliding blocks, 22 second helical teeth sliding blocks, 23 are adjusted Speed belt wheel Moving plate, 24 speed regulation belt wheel price fixings, 25 dirt-proof boots, 26 end rings, 27 fan shafts, 28 connecting plates, 29 Moving plate bolts, 3 Pull rod.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Fig. 1-6 is please referred to, the present invention provides a kind of technical solution: harvester centrifugal fan electric speed regulation mechanism, including electricity Transmission module 1 and fan speed adjusting device 2 are controlled, automatically controlled transmission module 1 includes bottom plate, motor 11, sector rack 13 and angle sensor Device 14, motor 11 and sector rack 13 are installed on bottom plate, and angular transducer 14 is installed on sector rack 13 by mounting plate Top, transmission gear 12 is equipped on the output shaft of motor 11, and transmission gear 12 is engaged with sector rack 13, set on sector rack 13 There are the first connecting hole 131 and the second connecting hole 132, the bull stick 141 of angular transducer 14 passes freely through the first connecting hole 131；Wind Fan speed regulation device 2 includes that the first helical teeth sliding block 21, the second helical teeth sliding block 22, the speed belt being sequentially arranged on fan shaft 27 move in turn Disk 23 and speed regulation belt wheel price fixing 24, the first helical teeth sliding block 21 are fixed by bolts on the connecting plate 28 of fan, and the first helical teeth is sliding Block 21 and 22 flank of tooth of the second helical teeth sliding block are installed in opposite directions and are intermeshed, and the second helical teeth sliding block 22 is freely socketed on fan shaft 27 And rotated relative to the first helical teeth sliding block 21, the second helical teeth sliding block 22 is connect with one end of pull rod 3, the other end of pull rod 3 and second Connecting hole 132 connects, specifically, the installation axle on speed belt wheel Moving plate 23 is freely socketed on fan shaft 27, in speed regulation belt wheel The installation axle outer ring of Moving plate 23 is also cased with end ring 26, and 26 outer ring of end ring and 22 inner ring of the second helical teeth sliding block are clamped.

Further, speed belt wheel Moving plate 23 is connect by Moving plate bolt 29 with speed regulation belt wheel price fixing 24, Moving plate bolt 29 Including nut and screw rod, screw rod is equipped with external thread section and non-threaded section, and external thread section is between nut and non-threaded section, outside Thread segment is threadedly coupled with speed regulation belt wheel price fixing 24, and speed belt wheel Moving plate 23 is set on non-threaded section, the spiral shell of Moving plate bolt 29 Pole length be greater than any helical teeth sliding block helical teeth length, two helical teeth sliding blocks close to or far from when, in speed belt wheel Moving plate 23 Without departing from screw rod, the setting of Moving plate bolt 29 can prevent speed belt wheel Moving plate 23 from rotating.

Preferably, dirt-proof boot 25 is equipped between the first helical teeth sliding block 21 and the second helical teeth sliding block 22, dirt-proof boot 25 can be to prevent Only dust enters, and extends the service life of equipment.

Working principle: when adjustment rotation speed of the fan, motor 11 works, and the transmission gear 12 of the driving of motor 11 lower section rotates, and passes The rotation of moving gear 12 drives sector rack 13 to rotate, the angle feed-back that the bull stick 141 on angular transducer 14 turns over bull stick 141 To microprocessor, to assist the driving of motor 11, while sector rack 13 rotates, the second connecting hole 132 is rotated with it, with The pull rod 3 of second connecting hole 132 connection also rotates with it, and pull rod 3 pulls the second helical teeth sliding block 22 to rotate while rotation, is turning When dynamic, relative to the first helical teeth sliding block 21 left-right position movement occurs for the second helical teeth sliding block 22, when between two helical teeth sliding blocks When distance increases, the second helical teeth sliding block 22 pushes speed belt wheel Moving plate 23 close to speed regulation belt wheel price fixing 24, makes speed belt wheel Moving plate Gap reduces between 23 and speed regulation belt wheel price fixing 24, and the belt being arranged on this gap will move up, when two helical teeth sliding blocks it Between distance reduce when, belt rotation strength will push speed belt wheel Moving plate 23 far from speed regulation belt wheel price fixing 24, make speed belt It takes turns gap between Moving plate 23 and speed regulation belt wheel price fixing 24 to increase, belt will move down, and the size of transmission radius can be with belt It moves up and down and changes, the revolving speed of fan is also just changed.

It is artificial without getting off when changing rotation speed of the fan using harvester centrifugal fan electric speed regulation mechanism provided by the invention The quantity for adjusting gasket can be rapidly completed in harvesting hands- operation, and mode of operation is convenient and quick, when operation is greatly saved Between, operating efficiency is improved, in addition angular transducer can incude angle that sector rack turns over and feed back to microprocessor, can be with Assist operator's driving motor.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims

1. The harvester cleaning fan electric speed regulating mechanism includes an electric control transmission module (1) and a fan speed regulating device (2), and it is characterized in that: the electric control transmission module (1) includes a base plate, a motor (11), Sector tooth plate (13) and angle sensor (14), described motor (11) and sector tooth plate (13) are installed on the base plate, and described angle sensor (14) is installed on sector tooth plate (13) by mounting plate Above, the output shaft of the motor (11) is equipped with a transmission gear (12), the transmission gear (12) meshes with the sector tooth plate (13), and the sector tooth plate (13) is provided with a first connecting hole (131) and the second connecting hole (132), the rotating rod (141) of the angle sensor (14) freely passes through the first connecting hole (131);

The fan speed regulating device (2) comprises a first helical slider (21), a second helical slider (22), a speed regulating pulley moving plate (23) and The speed regulating pulley fixed plate (24), the first helical tooth slider (21) is fixed on the connecting plate (28) of the fan by bolts, the first helical tooth slider (21) and the second helical tooth slider (21) The tooth surfaces of the sliders (22) are installed facing each other and meshed with each other. The second helical slider (22) is freely sleeved on the fan shaft (27) and rotates relative to the first helical slider (21). The two helical sliders (22) are connected to one end of the pull rod (3), and the other end of the pull rod (3) is connected to the second connection hole (132).

2. The harvester cleaning fan electric speed-regulating mechanism according to claim 1, characterized in that: the speed-regulating pulley moving plate (23) is connected with the speed-regulating pulley fixed plate (24) through the moving plate bolt (29) ) connection, the moving disc bolt (29) includes a nut and a screw rod, the screw rod is provided with an externally threaded segment and a non-threaded segment, the externally threaded segment is located between the nut and the non-threaded segment, and the externally threaded segment and the non-threaded segment The speed regulating pulley fixed plate (24) is threaded, and the speed regulating pulley moving plate (23) is sleeved on the non-threaded section.

3. The harvester cleaning fan electric speed regulating mechanism according to claim 1, characterized in that: it also includes a bearing retaining ring (26), and the bearing retaining ring (26) is sleeved on the speed regulating pulley driving disc ( 23) Install the outer ring of the shaft and clamp it into the inner ring of the second helical slider (22).

4. The electric speed regulating mechanism of the cleaning fan of the harvester according to claim 1, characterized in that: there is a dust-proof device between the first helical slider (21) and the second helical slider (22). Sets (25).