CN110337895A - A kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power - Google Patents
A kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power Download PDFInfo
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- CN110337895A CN110337895A CN201910701228.6A CN201910701228A CN110337895A CN 110337895 A CN110337895 A CN 110337895A CN 201910701228 A CN201910701228 A CN 201910701228A CN 110337895 A CN110337895 A CN 110337895A
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- threshing
- grid
- concave
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- cylinder
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/30—Straw separators, i.e. straw walkers, for separating residual grain from the straw
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Abstract
A kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power; including rack; axial-flow threshing device is installed in rack; the lower section of the threshing cylinder with rib of axial-flow threshing device is equipped with grid-type concave; it is equipped in rack and is able to drive the vertically moving telescoping mechanism of grid-type concave, be additionally provided with the displacement sensor for being able to detect grid-type concave height in rack；Grid-type concave is equipped with multiple groups strain gauge on the compass screen surface of threshing cylinder side, tangential force suffered by grid-type concave and real-time delivery are detected to controller by strain gauge, the weight distribution ratio being corresponding in turn to all strain gauges is preset in controller, threshing power virtual value is calculated in controller, and the threshing power optimal threshold prestored in threshing power virtual value and controller is compared, controlling telescoping mechanism according to comparison result drives grid-type concave to move to height corresponding with threshing power optimal threshold, realize the automatic real-time adjusting to concave clearance.
Description
Technical field
The present invention relates to sheller unit field more particularly to a kind of concave clearance automatic adjusuments based on the detection of threshing power
Formula thresing machine.
Background technique
For thresing machine as the critical mechanical during combining, working condition directly determines the good of overall performance
It is bad.Currently, most sheller units are all made of mechanical fixed-type external in the market, it is difficult to realize its internal structure and running parameter
Automatic adjusument is harvesting object difference or agricultural material growth conditions under different conditions, and easily generation Threshing is poor, rolls
The problems such as cylinder blocking, efficiency of crop is seriously affected, is affected adversely farming season, and main reason is that the combination shape of threshing element and concave grate
Formula generates different threshing mechanism, by taking rasp bar-grid concave plate screen axis flow threshing device as an example, and by de- between threshing material
Grain mechanism is mainly shown as impact, kneading action, and threshing separating effect is hit with material in threshing course, rubbing degree has
It closes.Agricultural material suitable for the threshing form mainly has wheat, rape, Chinese cabbage etc., the best threshing separation of every kind of material
Effect is generated under best threshing power, although and proposing in existing thresing machine by adjusting concave clearance adjustment bolt
Adjustment axis in band moving axis stream concave clearance moves up and down, and by driving motor or by adjusting flexible tooth around the revolution of drum shaft
Radius realizes method that threshing cylinder notch board is adjusted, but all can not be according to real-time working condition come between adjust automatically notch board
Gap makes threshing power be difficult to maintain optimum state, causes the functional reliability of thresing machine and working efficiency all relatively low, therefore needs
Concave clearance can be adjusted in real time to reach best threshing according to material and machine operation state in the actual production process
The thresher machine of power.
Summary of the invention
To solve the problems, such as that existing thresher machine can not adjust concave clearance in real time, the present invention provides one kind based on de-
The concave clearance self-adapting adjustment type thresing machine of grain power detection.
The present invention to solve above-mentioned technical problem used by technical solution be: it is a kind of based on threshing power detection notch board between
Gap self-adapting adjustment type thresing machine, including rack, axial-flow threshing device is equipped in rack, and axial-flow threshing device includes a water
The cylinder of setting is put down, threshing cylinder with rib is provided in cylinder, the lower section of threshing cylinder with rib is equipped with grid-type concave, cylinder
The both ends of body offer feed inlet and impurity outlet respectively, and the motor for driving threshing cylinder to rotate is additionally provided in rack, is passed through
The rotation of threshing cylinder is detached from grain from stalk with grid-type concave cooperation and is sifted out by grid-type concave, the downside of cylinder
In the hopper being equipped with below opening setting and cylinder for collecting grain；
It is equipped in the rack and is able to drive the vertically moving telescoping mechanism of grid-type concave, be additionally provided with energy in rack
Enough detect the displacement sensor of grid-type concave height；Grid-type concave is equipped with multiple groups on the compass screen surface of threshing cylinder side
Strain gauge, multiple groups strain gauge are distributed along the axially spaced-apart of grid-type concave, and the quantity of every group of strain gauge is identical,
Same group of multiple strain gauges are located at the same axial position of grid-type concave, and same group of multiple strain gauges are along grid
The circumferential direction of format notch board is evenly spaced on；
It is equipped with suffered by strain gauge position and cuts on grid-type concave when detecting threshing cylinder rotation by strain gauge
Its tangential force numerical value real-time delivery detected to controller, is preset with and institute by Xiang Li, multiple strain gauges in controller
The weight distribution ratio for having strain gauge to be corresponding in turn to, controller are received tangential to its institute by weight distribution ratio
Power numerical value calculate to obtaining threshing power virtual value, prestored in controller threshing power optimal threshold and with threshing power most
The corresponding grid-type concave height of good threshold value, is compared threshing power virtual value and threshing power optimal threshold by controller
It is right, and telescoping mechanism is controlled according to comparison result, grid-type concave is driven to move to height corresponding with threshing power optimal threshold
Degree.
Preferably, the telescoping mechanism uses multiple electric pushrods, and electric pushrod is vertically arranged, the bottom end peace of electric pushrod
On the rack, the top of electric pushrod and grid-type concave connect dress far from the side of threshing cylinder.
Further, the telescoping mechanism uses four electric pushrods, and four electric pushrods symmetrically divide about threshing cylinder
Cloth.
Further, institute's displacement sensors use four Hall displacement transducers, four Hall displacement transducers
It is located at respective electric pushrod bottom end side.
Preferably, the grid-type concave is sequentially connected along axial direction by multistage fission notch board and is constituted, multiple groups strain gauge
Respective one section seperated notch board is located at along axial middle part.
Further, the grid-type concave is sequentially connected along axial direction by the seperated notch board of three sections of equal lengths and is constituted, often
The seperated notch board of section is equipped with same group of three strain gauges along axial middle part.
Further, the weight distribution ratio Wei ﹛ 0.22 of nine strain gauges, 0.2,0.17,0.13,0.1,0.07,
The calculation formula of 0.06,0.03,0.02 ﹜, threshing power virtual value is,For weight distribution ratio,To answer
The numerical value for the tangential force that force snesor is surveyed, nine strain gaugesWith weight distribution ratioCorresponding sequence is
It is corresponding in turn to from one group of strain gauge close to feed inlet to one group of strain gauge close to impurity outlet, and same group of stress
In sensor for along with threshing cylinder turn be corresponding in turn in the opposite direction.
Preferably, the strain gauge is made of four foil gauges with full-bridge connection type.
Preferably, the threshing cylinder with rib includes main shaft, and multiple width disks, the outer circle of multiple width disks are set on main shaft
Multiple rasp bars are connected on week, all rasp bars are parallel with main shaft, and main shaft is further sleeved with multiple close to one end of impurity outlet
Lysimachia sikokiana spike-tooth, in order to which stalk prevents from blocking from impurity outlet discharge.
Preferably, the motor drives threshing cylinder rotation by transmission belt, and the hopper uses splicing trolley, the machine
Buzzer is also equipped on frame, for alarming in impurity outlet blocking to personnel.
According to the above technical scheme, the beneficial effects of the present invention are:
Concave clearance self-adapting adjustment type thresing machine provided by the invention based on the detection of threshing power, by grid-type concave
Tangential force suffered by multiple and different positions is measured in real time, and real according to the weight distribution ratio between different location tangential force
When calculate the threshing power virtual value of grid-type concave during the work time, it will be able to by threshing power virtual value and grid-type concave
Threshing power optimal threshold real-time perfoming compare, to judge that concave clearance is in excessive or too small state, telescopic machine
Structure moves grid-type concave with regard to energy band and moves to height corresponding with threshing power optimal threshold, make concave clearance be able to maintain with
The corresponding size of threshing power optimal threshold, overcomes the defect of the prior art, improves the functional reliability and work of thresing machine
Make efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram of grid-type concave, electric pushrod and displacement sensor；
Fig. 3 is the elevational schematic view of grid-type concave, and dashed circle position is equipped with a strain gauge in figure；
Fig. 4 is the schematic diagram of threshing cylinder of the present invention.
Marked in the figure: 1, rack, 2, cylinder, 3, threshing cylinder, 301, main shaft, 302, width disk, 303, rasp bar, 304, Lysimachia sikokiana
Spike-tooth, 4, grid-type concave, 5, feed inlet, 6, impurity outlet, 7, motor, 8, splicing trolley, 9, displacement sensor, 10, stress biography
Sensor, 11, electric pushrod, 12, transmission belt.
Specific embodiment
Referring to attached drawing, specific embodiment is as follows:
As shown in Figure 1, a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power, including rack 1, rack 1
On axial-flow threshing device is installed, axial-flow threshing device includes a horizontally disposed cylinder 2, is provided with rasp bar formula in cylinder 2
The lower section of threshing cylinder 3, threshing cylinder with rib 3 is equipped with grid-type concave 4, and the both ends of cylinder 2 offer 5 He of feed inlet respectively
Impurity outlet 6,1 side of rack are additionally provided with motor 7, and motor 7 drives threshing cylinder 3 to rotate, passes through threshing cylinder 3 by transmission belt 12
The cooperation of rotation and grid-type concave 4 so that grain is detached from from stalk and is sifted out by grid-type concave 4, the stalk after threshing then from
Cylinder 2 is discharged in impurity outlet 6, and the downside of cylinder 2 is in the hopper being equipped with below opening setting and cylinder 2 for collecting grain, this reality
It applies hopper in example and uses splicing trolley 8.
As depicted in figs. 1 and 2, it is equipped in rack 1 and is able to drive the vertically moving telescopic machine of grid-type concave 4
Structure, telescoping mechanism uses four electric pushrods 11 in the present embodiment, and electric pushrod 11 is vertically arranged, the bottom end peace of electric pushrod 11
In rack 1, the top of electric pushrod 11 is connect with grid-type concave 4 far from the side of threshing cylinder 3, four electric pushrods
11 is symmetrical about threshing cylinder 3, and the displacement sensor 9 for being able to detect 4 height of grid-type concave is additionally provided in rack 1, this
Displacement sensor 9 uses four Hall displacement transducers in embodiment, and four Hall displacement transducers are located at respectively
11 bottom end side of an electric pushrod.
It is constituted as shown in figure 3, grid-type concave 4 is sequentially connected by the seperated notch board of three sections of equal lengths along axial direction, grid
Formula notch board 4 is equipped with three groups of strain gauges 10 on the compass screen surface of 3 side of threshing cylinder, and every section of seperated notch board is along axial direction
Portion is equipped with same group of three strain gauges 10, and every group of strain gauge 10 is located at respective one section seperated notch board edge
Axial middle part, same group of three strain gauges 10 are evenly spaced on along the circumferential direction of grid-type concave 4, and each stress passes
Sensor 10 is made of four foil gauges with full-bridge connection type, all strain gauges 10 all with a controller (in figure not
Show) connection.
It is detected by strain gauge 10 and is equipped with strain gauge 10 on grid-type concave 4 when threshing cylinder 3 rotates
Suffered tangential force is set, nine strain gauges 10 are by its tangential force numerical value real-time delivery detected to controller, controller
It is inside preset with the weight distribution ratio being corresponding in turn to all strain gauges 10, controller passes through weight distribution ratio pair
Its received tangential force numerical value of institute carries out calculating to obtain threshing power virtual value, and threshing power optimal threshold is prestored in controller
And 4 height of corresponding with threshing power optimal threshold grid-type concave, by controller by threshing power virtual value and threshing power
Optimal threshold is compared, and according to comparison result control four 11 mating bands of electric pushrod move grid-type concave 4 move to
The corresponding height of threshing power optimal threshold.
I.e. when threshing power virtual value is greater than threshing power optimal threshold, controller can control the synchronous contracting of four electric pushrods 11
It is short, decline grid-type concave 4, the gap between grid-type concave 4 and threshing cylinder 3 just will increase, and threshing power virtual value is just
It can reduce；Otherwise when threshing power virtual value is less than threshing power optimal threshold, it is synchronous that controller can control four electric pushrods 11
Elongation rises grid-type concave 4, and the gap between grid-type concave 4 and threshing cylinder 3 will reduce, threshing power virtual value
Just will increase, by this automatic adjustment mode make the gap between grid-type concave 4 and threshing cylinder 3 be able to maintain with it is de-
The corresponding size of grain power optimal threshold.It is also equipped with buzzer in rack 1 in the present embodiment, for blocking in impurity outlet 6
When to personnel alarm.
In the present embodiment, the weight distribution ratio Wei ﹛ 0.22 of nine strain gauges 10,0.2,0.17,0.13,0.1,
The calculation formula of 0.07,0.06,0.03,0.02 ﹜, threshing power virtual value is,For weight distribution ratio,
By the numerical value for the tangential force that strain gauge 10 is surveyed, nine strain gauges 10With weight distribution ratioIt is corresponding
Sequence be from close to feed inlet 5 one group of strain gauge 10 to close to impurity outlet 6 one group of strain gauge 10 it is successively right
Answer, and in same group of strain gauge 10 for along with threshing cylinder 3 turn be corresponding in turn in the opposite direction.
As shown in figure 4, the threshing cylinder with rib 3 used in the present embodiment includes main shaft 301, it is set on main shaft 301
Multiple width disks 302, are connected with multiple rasp bars 303 on the excircle of multiple width disks 302, all rasp bars 303 with main shaft 301
In parallel, main shaft 301 is further sleeved with multiple Lysimachia sikokiana spike-tooths 304 close to one end of impurity outlet 6, in order to which stalk is discharged from impurity outlet 6
It prevents from blocking.
Claims (10)
1. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power, including rack (1), rack are pacified on (1)
Equipped with axial-flow threshing device, axial-flow threshing device includes a horizontally disposed cylinder (2), is provided with rasp bar formula in cylinder (2)
The lower section of threshing cylinder (3), threshing cylinder with rib (3) is equipped with grid-type concave (4), and the both ends of cylinder (2) offer respectively
Feed inlet (5) and impurity outlet (6) are additionally provided with the motor (7) for driving threshing cylinder (3) to rotate in rack (1), pass through threshing
The rotation of roller (3) makes grain be detached from and be sifted out by grid-type concave (4), cylinder from stalk with grid-type concave (4) cooperation
(2) downside is in the hopper being equipped with below opening setting and cylinder (2) for collecting grain, it is characterised in that:
It is equipped on the rack (1) and is able to drive the vertically moving telescoping mechanism of grid-type concave (4), rack (1)
On be additionally provided with the displacement sensor (9) for being able to detect grid-type concave (4) height；Grid-type concave (4) is close to threshing cylinder (3)
It is equipped on the compass screen surface of side multiple groups strain gauge (10), axial direction of the multiple groups strain gauge (10) along grid-type concave (4)
It is spaced apart, the quantity of every group of strain gauge (10) is identical, and it is recessed that same group of multiple strain gauges (10) are located at grid type
The same axial position of plate (4), same group of multiple strain gauges (10) divide along the circumferential uniform intervals of grid-type concave (4)
Cloth；
By being equipped with strain gauge on grid-type concave (4) when strain gauge (10) detection threshing cylinder (3) rotation
(10) tangential force suffered by position, multiple strain gauges (10) are by its tangential force numerical value real-time delivery detected to control
Device is preset with the weight distribution ratio being corresponding in turn to all strain gauges (10) in controller, and controller passes through power
It reassigns ratio its received tangential force numerical value of institute is carried out calculating to obtain threshing power virtual value, be prestored in controller de-
Grain power optimal threshold and grid-type concave corresponding with threshing power optimal threshold (4) height, by controller by threshing power
Virtual value is compared with threshing power optimal threshold, and controls telescoping mechanism according to comparison result and drive grid-type concave (4) fortune
It moves to height corresponding with threshing power optimal threshold.
2. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 1, special
Sign is: the telescoping mechanism uses multiple electric pushrods (11), and electric pushrod (11) is vertically arranged, the bottom of electric pushrod (11)
End is mounted on rack (1), and the top of electric pushrod (11) is connect with grid-type concave (4) far from the side of threshing cylinder (3).
3. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 2, special
Sign is: the telescoping mechanism uses four electric pushrods (11), and four electric pushrods (11) are symmetrically divided about threshing cylinder (3)
Cloth.
4. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 3, special
Sign is: institute's displacement sensors (9) use four Hall displacement transducers, and four Hall displacement transducers are located at
A respective electric pushrod (11) bottom end side.
5. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 1, special
Sign is: the grid-type concave (4), which is sequentially connected by multistage fission notch board along axial direction, to be constituted, multiple groups strain gauge (10) point
It Wei Yu not the axial middle part in respective one section seperated notch board edge.
6. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 5, special
Sign is: the grid-type concave (4), which is sequentially connected by the seperated notch board of three sections of equal lengths along axial direction, to be constituted, and every section of fission is recessed
Plate is equipped with same group of three strain gauges (10) along axial middle part.
7. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 6, special
Sign is: the weight distribution ratio Wei ﹛ 0.22 of nine strain gauges (10), 0.2,0.17,0.13,0.1,0.07,0.06,
The calculation formula of 0.03,0.02 ﹜, threshing power virtual value is,For weight distribution ratio,For stress sensing
The numerical value for the tangential force that device (10) is surveyed, nine strain gauges (10)With weight distribution ratioCorresponding sequence
For from close to feed inlet (5) one group of strain gauge (10) to close to impurity outlet (6) one group of strain gauge (10) successively
It is corresponding, and to turn to be corresponding in turn in the opposite direction along with threshing cylinder (3) in same group of strain gauge (10).
8. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 1, special
Sign is: the strain gauge (10) is made of four foil gauges with full-bridge connection type.
9. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 1, special
Sign is: the threshing cylinder with rib (3) includes main shaft (301), and multiple width disks (302) are set on main shaft (301), multiple
It is connected on the excircle of width disk (302) multiple rasp bars (303), all rasp bars (303) are parallel with main shaft (301), main
Axis (301) is further sleeved with multiple Lysimachia sikokiana spike-tooths (304) close to the one end of impurity outlet (6), in order to which stalk is discharged from impurity outlet (6)
It prevents from blocking.
10. a kind of concave clearance self-adapting adjustment type thresing machine based on the detection of threshing power according to claim 1, special
Sign is: the motor (7) uses splicing trolley (8) by transmission belt (12) driving threshing cylinder (3) rotation, the hopper,
It is also equipped with buzzer on the rack (1), for alarming when impurity outlet (6) are blocked to personnel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701228.6A CN110337895B (en) | 2019-07-31 | 2019-07-31 | Concave plate gap self-adaptive adjustment type threshing machine based on threshing force detection |
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|---|---|---|---|
| CN201910701228.6A CN110337895B (en) | 2019-07-31 | 2019-07-31 | Concave plate gap self-adaptive adjustment type threshing machine based on threshing force detection |
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| CN110337895B CN110337895B (en) | 2020-08-11 |
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| CN112640668A (en) * | 2021-01-08 | 2021-04-13 | 河南科技大学 | Roller threshing machine and self-adaptive speed regulation method thereof |
| CN113508690A (en) * | 2021-05-08 | 2021-10-19 | 河南科技大学 | Flexible threshing device capable of automatically adjusting threshing gap |
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| CN113508690A (en) * | 2021-05-08 | 2021-10-19 | 河南科技大学 | Flexible threshing device capable of automatically adjusting threshing gap |
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| Publication number | Publication date |
|---|---|
| CN110337895B (en) | 2020-08-11 |
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Application publication date: 20191018 Assignee: Luoyang Haiyuan Agricultural Machinery Co., Ltd Assignor: Henan University of science and technology Contract record no.: X2021980012074 Denomination of invention: An adaptive concave clearance adjusting thresher based on threshing force detection Granted publication date: 20200811 License type: Common License Record date: 20211109 |