CN103822744A - Device and method for measuring corn ear threshing force of bare hands - Google Patents
Device and method for measuring corn ear threshing force of bare hands Download PDFInfo
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- CN103822744A CN103822744A CN201410069198.9A CN201410069198A CN103822744A CN 103822744 A CN103822744 A CN 103822744A CN 201410069198 A CN201410069198 A CN 201410069198A CN 103822744 A CN103822744 A CN 103822744A
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Abstract
Provided are a device and method for measuring corn ear threshing force of bare hands. The device comprises a torque measurement instrument, a rack and a torque sensor, the signal output end of the torque sensor is connected with the torque measurement instrument, and a flexible clamp used for fixing a corn ear sample is arranged at one end of the torque sensor. The measurement method comprises the steps that the corn ear sample is divided into a plurality of equal-length regions to be measured in the axial direction of the corn ear sample, one end of the sample is clamped in the flexible clamp, a scaleplate is adjusted to be aligned at the starting threshing position of the nth region to be measured, the suspension end of the corn ear sample is manually rotated for threshing, when the suspension end of the corn ear sample is rotated to the finial position from the starting threshing position, a final trigger is triggered at the same time, the torque of the current position is displayed through the torque measurement instrument, and the threshing force of the nth region to be measured at different threshing moments can be obtained through data processing. According to the device, the threshing force borne by corn ears is measured in the bare hand threshing process, and theoretical foundations are provided for parameter setting of the threshing device.
Description
Technical field
The invention belongs to agricultural mechanical field, specifically a kind of devices and methods therefor of measuring the naked hand threshing power of corn ear size.
Background technology
Existing united reaper is mostly direct harvesting corn rod; then carry out threshing processing by maize sheller; maize sheller is one of main Agricultural Machinery Design; the quality of its performance directly has influence on efficiency and the quality of corn threshing; in the time carrying out corn ear threshing; the de-loss rate of existing thresing machine is higher, loses larger.Damage is one of principal mode that corn quality reduces, and has the corn of damage easily to produce in course of conveying broken, easily moisture absorption in storage process, goes mouldy and produces disease and pest, the germination percentage of grade, precision and seed after impact is processed etc.Threshing damage in mechanized harvest is the key factor of the cereal damages such as corn, directly has influence on the links such as follow-up conveying, storage and processing.Therefore, need to determine the best threshing power of sheller unit, and best threshing position on corn ear, can provide theoretical foundation for later sheller unit, but existing dynamometry apparatus is not enough to this object.
Summary of the invention
The object of this invention is to provide a kind of best threshing position and device and the measuring method of best threshing power, i.e. a kind of devices and methods therefor of measuring the naked hand threshing power of corn ear size that can test out on corn ear.
The technical scheme that the present invention adopted is for achieving the above object: the device of measuring the naked hand threshing power of corn ear size, comprise torque measurer, frame and be fixed in frame the torque sensor of level of torque when measuring the threshing of corn ear sample, in described frame, be also provided with the terminal trigger that is used to indicate the scale of the initial threshing of corn ear sample position and is connected with the controller of torque sensor, the signal output part of described torque sensor is connected with torque measurer, and one end of torque sensor is provided with ring flange, the other end is provided with for fixing corn ear sample and can adapts to the flexible fixture that its shape and size change.
Flexible fixture in said apparatus comprises the cylindrical shell of hollow, one end of cylindrical shell is fixed on the ring flange of torque sensor end, the other end is evenly equipped with some bolts that pass cylindrical shell circumference wall and be threaded with it, the end of bolt is provided with for rubber sheet gasket, and corn ear sample is installed in the space of rubber sheet gasket formation that adapts to its shape and size variation.
Scale in said apparatus is arranged on and holds corn ear sample and prepare to rotate the position relative with hand middle finger metacarpophalangeal joints before threshing, and described terminal trigger is arranged on and holds an angle of corn ear sample rotation and make the position that middle finger metacarpophalangeal joints can touch after corn threshing.
The method of utilizing said apparatus to measure the naked hand threshing power of corn ear size is: get corn ear sample, be divided into the interval multiple to be measured of equal length along its axial direction, separately get the diameter that vernier caliper measurement goes out each interval to be measured, then one end of corn ear sample is installed in flexible fixture, from the end that is installed of corn ear sample, each interval to be measured is labeled as to the 1st interval to be measured successively, the 2nd interval to be measured, ..., n-1 interval to be measured and n interval to be measured, each interval to be measured is near a corn ear sample side of the end initial threshing position that is each interval to be measured that is installed,
Adjust the initial threshing aligned in position that scale makes itself and n interval to be measured, the manual free end along fixed-direction rotation corn ear sample makes its threshing, when touch terminal trigger in the time that initial threshing position turns to final position, the transmission of torque that corn ear sample produces is to torque sensor, torque sensor sends the signal collecting to torque measurer after charge amplifier amplifies, torque measurer demonstrates the torque when front, can draw the threshing power size in n interval to be measured different threshing moment by data processing; According to same measuring method measure successively n-1 interval to be measured ..., the 2nd interval to be measured and the threshing power size in the 1st interval to be measured different threshing moment.
It is 6.39-6.55m/s that the interval each to be measured of above-mentioned hand-turning corn ear sample makes the differential value of corn threshing.
Beneficial effect: (1), device of the present invention are during for naked hand threshing, measure the size of the suffered threshing power of corn ear, can directly read, calculate required torque and the threshing power of every a part of threshing on corn ear, measuring error is less, and this device can provide scientific basis for quantitative test such as the threshing damages of corn ear;
(2), the present invention is fixed on the corn ear sample on torque sensor by hand-turning by flexible fixture, make corn kernel threshing and do not destroy corn kernel by enough power, the torque now producing is delivered on torque sensor by flexible fixture, on torque measurer, demonstrate the torque when front, can draw the size of n interval to be measured different threshing moment threshing power by data processing, measure by a large amount of continuously naked hand threshings, best threshing position just can draw corn ear threshing time and best threshing power, for the parameter setting of the sheller unit of corn ear provides theoretical foundation, and then raising Threshing, reduce de-loss rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A of Fig. 1 middle cylinder body is to view.
Reference numeral: 1, torque measurer, 2, frame, 3, torque sensor, 4, ring flange, 5, cylindrical shell, 6, rubber sheet gasket, 7, bolt, 8, corn ear sample, 9, terminal trigger, 10, scale.
Embodiment
As shown in Figure 1, measure the device of the naked hand threshing power of corn ear size, comprise torque measurer 1, frame 2 and be fixed in frame 2 torque sensor 3 of level of torque when measuring 8 threshing of corn ear sample, in described frame 2, be also provided with the terminal trigger 9 that is used to indicate the scale 10 of the initial threshing of corn ear sample 8 position and is connected with the controller of torque sensor 3, terminal trigger 9 is used to indicate and rotates corn ear sample 8 position to terminal.The signal output part of described torque sensor 3 is connected with torque measurer 1, and one end of torque sensor 3 is provided with ring flange, and the other end is provided with for fixing corn ear sample 8 and can adapts to the flexible fixture that its shape and size change.Wherein, flexible fixture comprises the cylindrical shell 5 of hollow, one end of cylindrical shell 5 is fixed on the ring flange of torque sensor 3 ends, the other end is evenly equipped with some bolts 7 that pass cylindrical shell 5 circumference walls and be threaded with it, the end of bolt 7 is provided with rubber sheet gasket 6, and corn ear sample 8 is installed on and adapts in space that rubber sheet gasket 6 that its shape and size change forms; As depicted in figs. 1 and 2, described cylindrical shell 5 is cylindrical, and on its circumference, equal angles is provided with three and can be screwed into the bolt 7 of back-outing, the setting that offsets of the end of bolt 7 and rubber sheet gasket 6, and each bolt 7 is 120 ° of angles and is distributed in the plane vertical with cylindrical shell 5 axis.
Wherein, scale 10 is arranged on and holds corn ear sample 8 and prepare to rotate the positions relative with hand middle finger metacarpophalangeal joints before threshings, and described terminal trigger 9 is arranged on and holds corn ear sample 8 and rotate an angle and make the position that middle finger metacarpophalangeal joints can touch after corn threshing.
Utilize said apparatus to measure the method for the naked hand threshing power of corn ear size, comprise the following steps:
When next interval to be measured of threshing, cut a hole last interval to be measured and not depart from the seed falling, in order to avoid have influence on the experimental result in next interval to be measured; When end of being installed of testing to corn ear sample 8, take off corn ear sample 8, remaining seed when cutter goes previous threshing experiment, again the test lead of corn ear sample 8 is installed in flexible fixture, along before same method test corn ear sample 8 remainders, until test whole corn ear sample 8.By a large amount of test continuously, just can know best threshing position and the best threshing power of corn ear.Wherein, to make the differential value of corn threshing be 6.39-6.55m/s in the interval each to be measured of hand-turning corn ear sample 8.
In the present invention, flexible fixture refers to uses same chucking appliance system, completes the equipment of the different fruit ear clamping of geomery, flexible clip has can be correctly, reliably, positioning and clamping function fast, simultaneously and fruit ear flexible contact, to fruit ear not damaged.
Claims (5)
1. measure the device of the naked hand threshing power of corn ear size, it is characterized in that: comprise torque measurer (1), frame (2) and be fixed on frame (2) upper when measuring corn ear sample (8) threshing the torque sensor (3) of level of torque, in described frame (2), be also provided with the terminal trigger (9) that is used to indicate the scale (10) of the initial threshing of corn ear sample (8) position and is connected with the controller of torque sensor (3), the signal output part of described torque sensor (3) is connected with torque measurer (1), and one end of torque sensor (3) is provided with ring flange, the other end is provided with for fixing corn ear sample (8) and can adapts to the flexible fixture that its shape and size change.
2. the device of the naked hand threshing power of measurement corn ear according to claim 1 size, it is characterized in that: described flexible fixture comprises the cylindrical shell of hollow (5), one end of cylindrical shell (5) is fixed on the ring flange of torque sensor (3) end, the other end is evenly equipped with some bolts (7) that pass cylindrical shell (5) circumference wall and be threaded with it, and the end of bolt (7) is provided with the rubber sheet gasket (6) for corn ear sample (8) that are installed.
3. the device of the naked hand threshing power of measurement corn ear according to claim 1 size, it is characterized in that: described scale (10) is arranged on and holds corn ear sample (8) and prepare to rotate the position relative with hand middle finger metacarpophalangeal joints before threshing, described terminal trigger (9) is arranged on and holds an angle of corn ear sample (8) rotation and make the position that middle finger metacarpophalangeal joints can touch after corn threshing.
4. the method for the naked hand threshing power of measurement corn ear according to claim 1 size, it is characterized in that: get corn ear sample (8), be divided into the interval multiple to be measured of equal length along its axial direction, separately get the diameter that vernier caliper measurement goes out each interval to be measured, then one end of corn ear sample (8) is installed in flexible fixture, from the end that is installed of corn ear sample (8), each interval to be measured is labeled as to the 1st interval to be measured successively, the 2nd interval to be measured, ..., (n-1) interval to be measured and n interval to be measured, each interval to be measured is near corn ear sample (8) side of the end initial threshing position that is each interval to be measured that is installed,
Adjust the initial threshing aligned in position that scale (10) makes itself and n interval to be measured, the manual free end along fixed-direction rotation corn ear sample (8) makes its threshing, when touch terminal trigger (9) in the time that initial threshing position turns to final position, the transmission of torque that corn ear sample (8) produces is to torque sensor (3), torque sensor (3) sends the signal collecting to torque measurer (1) after charge amplifier amplifies, torque measurer (1) demonstrates the torque when front, can draw the threshing power size in n interval to be measured different threshing moment by data processing, according to same measuring method measure successively (n-1) interval to be measured ..., the 2nd interval to be measured and the threshing power size in the 1st interval to be measured different threshing moment.
5. the method for the naked hand threshing power of measurement corn ear according to claim 4 size, is characterized in that: in step 3, to make the differential value of corn threshing be 6.39-6.55m/s in the interval each to be measured of hand-turning corn ear sample (8).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236778A (en) * | 2014-09-26 | 2014-12-24 | 河南科技大学 | Device for measuring extrusion force among kernels of corn ears |
| CN104848978A (en) * | 2015-04-28 | 2015-08-19 | 河南科技大学 | Device for measuring grain discrete force in corn ear threshing |
| CN105973517A (en) * | 2016-05-16 | 2016-09-28 | 河南科技大学 | Sunflower disc clamping device for impact test machine, and method for measuring impact force |
| CN108318418A (en) * | 2018-04-10 | 2018-07-24 | 青岛农业大学 | Corn ear axis grain connects force measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104236778A (en) * | 2014-09-26 | 2014-12-24 | 河南科技大学 | Device for measuring extrusion force among kernels of corn ears |
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| CN105973517A (en) * | 2016-05-16 | 2016-09-28 | 河南科技大学 | Sunflower disc clamping device for impact test machine, and method for measuring impact force |
| CN105973517B (en) * | 2016-05-16 | 2018-11-09 | 河南科技大学 | The method of sunflower disk clamp device and measurement impact force for shock machine |
| CN108318418A (en) * | 2018-04-10 | 2018-07-24 | 青岛农业大学 | Corn ear axis grain connects force measuring device |
| CN108318418B (en) * | 2018-04-10 | 2023-09-08 | 青岛农业大学 | Corn cob grain connecting force measuring device |
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