CN109374437B - Crop stem shearing stress measuring device - Google Patents
Crop stem shearing stress measuring device Download PDFInfo
- Publication number
- CN109374437B CN109374437B CN201811213321.4A CN201811213321A CN109374437B CN 109374437 B CN109374437 B CN 109374437B CN 201811213321 A CN201811213321 A CN 201811213321A CN 109374437 B CN109374437 B CN 109374437B
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- type shearing
- cutter blade
- plate type
- blade
- outer cutter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A crop stem shearing stress measuring device, belonging to scientific research detecting instrument; the bottom of the angle-shaped knife rest is fixedly provided with a fixed rod, the upper part of the angle-shaped knife rest is sleeved with an outer blade seat body which can move up and down, the plate-type shearing outer blades A, B are symmetrically and parallelly arranged on the side part of the outer blade seat body, the hole-type shearing inner blade can move up and down and is assembled between the plate-type shearing outer blades A, B, the cutting edge of the cutting part of the inner blade of the hole-type shearing inner blade is a flat edge, and a pull rod is hinged with the upper side part of the hole-type shearing inner blade through a tension sensor; the device has the advantages of novel, reasonable, simple and compact structure, low manufacturing cost, simple and convenient operation and use, high detection precision and strong applicability.
Description
Technical Field
The invention belongs to a detecting instrument for scientific research, and mainly relates to a device for measuring the shearing stress of crop stems.
Background
When designing the agricultural machines such as transplanting machines, transplanting machines or harvesting machines, the crop stem shearing stress of the operation object is one of important reference factors and indexes related to the quality and level of the mechanical design. However, at present, no special device for measuring the crop stem shearing stress exists in China, and the technical problems of complex equipment structure, large outline dimension and poor detection precision exist when measuring equipment and methods in other fields are adopted to substitute for detecting the crop stem shearing stress.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and designs a special crop stem shearing stress measuring device by combining the actual requirements of agricultural implement design, thereby achieving the purposes of simple and compact structure, simple and convenient operation and use, high detection precision and strong applicability.
The purpose of the invention is realized as follows: a fixed rod is fixedly arranged at the bottom of the horn-shaped knife rest, an outer blade seat body is sleeved on the upper part of the horn-shaped knife rest and can be adjusted by adjusting a positioning jackscrew to move up and down, the side part of the outer blade seat body is symmetrically provided with a plate type shearing outer blade A and a plate type shearing outer blade B which are parallel to each other, the hole type shearing inner blade can be arranged between the plate type shearing outer blade A and the plate type shearing outer blade B in a vertically drawing and moving way, and the two side surfaces of the hole type shearing inner blade are respectively in close contact fit with the opposite inner side surfaces of the plate type shearing outer blade A and the plate type shearing outer blade B, the cutting edge of the shearing part of the inner blade of the hole type shearing inner blade is a flat edge, the pull rod is hinged with the upper side part of the hole type shearing inner blade through a tension sensor, the axial center line of the pull rod is superposed with the axial center line of the fixed rod, so that the crop stalk shear stress measuring device is formed.
The invention creates a combined structure of the hole type shearing inner blade and the plate type shearing outer blade A, B which adopts the cutting edge of the shearing part as the flat edge, completes the shearing stress measurement of crop stalks by a detection mode matched with a pressure sensor, and has the characteristics of novel, reasonable, simple and compact structure, low manufacturing cost, simple and convenient operation and use, high detection precision and strong applicability.
Drawings
FIG. 1 is a schematic view of the overall structure of a crop stalk shear stress measuring device;
fig. 2 is a sectional view taken along line a-a in fig. 1.
Description of part numbers in the figures:
1. the device comprises a pull rod, 2, a tension sensor, 3, plate type shearing outer blades A and 4, plate type shearing outer blades B and 5, hole type shearing inner blades, 6, fixing rods, 7, adjusting and positioning jackscrews, 8, a horn-shaped knife rest, 9, cutting edges of cutting parts of the inner blades, 10 and an outer blade seat body.
Detailed Description
The following detailed description of the inventive embodiments is provided in connection with the accompanying drawings. A crop stem shearing stress measuring device is characterized in that a fixing rod 6 is fixedly arranged at the bottom of a horn-shaped knife rest 8, an outer blade seat body 10 which can be adjusted by adjusting a positioning jackscrew 7 in an up-and-down moving mode is sleeved on the upper portion of the horn-shaped knife rest 8, a plate type shearing outer blade A3 and a plate type shearing outer blade B4 are symmetrically and parallelly arranged on the side portion of the outer blade seat body 10, a hole type shearing inner blade 5 is arranged between the plate type shearing outer blade A3 and the plate type shearing outer blade B4 in a vertically drawing and moving mode, two side surfaces of the hole type shearing inner blade 5 are respectively in close contact fit with the opposite inner side surfaces of the plate type shearing outer blade A3 and the plate type shearing outer blade B4, a cutting edge 9 of an inner blade shearing portion of the hole type shearing inner blade 5 is a flat edge, a pull rod 1 is hinged with the upper side portion of the hole type shearing inner blade 5 through, the axial center line of the pull rod 1 is superposed with the axial center line of the fixed rod 6.
When the crop stem shearing stress detection operation is carried out, firstly, the device is assembled on a universal tester through a pull rod 1 and a fixing rod 6, then the crop stem is inserted into an inner hole of a hole type shearing inner blade 5, the universal tester is started to move upwards by pulling the pull rod 1, the hole type shearing inner blade 5 is driven to move upwards by using a tension sensor 2, the crop stem is sheared in a form of two cutting sections under the condition that a flat edge 9 of a cutting part of the inner blade of the hole type shearing inner blade 5 is matched with plate type shearing outer blades A, B3 and 4, the tension sensor 2 obtains a shearing stress value under the state, and the shearing stress value of the crop stem is obtained after the value is divided by 2.
Claims (1)
1. The utility model provides a crop stem stalk shear stress measuring device which characterized in that: a fixed rod (6) is fixedly arranged at the bottom of a horn-shaped cutter frame (8), an outer cutter blade seat body (10) is sleeved on the upper part of the horn-shaped cutter frame (8) and can be adjusted in an up-and-down moving mode through an adjusting and positioning jackscrew (7), a plate type shearing outer cutter blade A (3) and a plate type shearing outer cutter blade B (4) are symmetrically and parallelly arranged on the side part of the outer cutter blade seat body (10), a hole type shearing inner cutter blade (5) can be arranged between the plate type shearing outer cutter blade A (3) and the plate type shearing outer cutter blade B (4) in a vertically drawing and moving mode, two side surfaces of the hole type shearing inner cutter blade (5) are respectively in close contact fit with the opposite inner side surfaces of the plate type shearing outer cutter blade A (3) and the plate type shearing outer cutter blade B (4), the cutting edge (9) of the cutting part of the inner cutter blade (5) is a, the pull rod (1) is hinged with the upper side part of the hole type shearing inner blade (5) through a tension sensor (2), and the axial center line of the pull rod (1) is superposed with the axial center line of the fixed rod (6);
the device is assembled on a universal testing machine through the pull rod (1) and the fixed rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213321.4A CN109374437B (en) | 2018-10-10 | 2018-10-10 | Crop stem shearing stress measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213321.4A CN109374437B (en) | 2018-10-10 | 2018-10-10 | Crop stem shearing stress measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109374437A CN109374437A (en) | 2019-02-22 |
| CN109374437B true CN109374437B (en) | 2021-06-22 |
Family
ID=65400198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811213321.4A Active CN109374437B (en) | 2018-10-10 | 2018-10-10 | Crop stem shearing stress measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109374437B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672509A (en) * | 2019-09-06 | 2020-01-10 | 安徽农业大学 | Straw cutting performance testing device and testing method |
| CN111504774A (en) * | 2020-05-23 | 2020-08-07 | 石河子大学 | Fixing device is cuted to stem stalk |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6422091B1 (en) * | 2000-07-20 | 2002-07-23 | Playtex Products, Inc. | Apparatus for testing the life expectancy of a straw |
| JP2015062011A (en) * | 2013-08-20 | 2015-04-02 | 株式会社Ihi | Cutting test apparatus |
| CN107589025A (en) * | 2016-07-10 | 2018-01-16 | 李月梅 | Portable rural crop material shears force measuring instrument |
| CN207610949U (en) * | 2017-10-24 | 2018-07-13 | 福建农林大学 | Hand-held Jujun grasses stalk experimental rig |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201724889U (en) * | 2010-04-26 | 2011-01-26 | 山东农业大学 | Portable straw shear force instrument |
| CN201867340U (en) * | 2010-10-12 | 2011-06-15 | 山东农业大学 | Portable manual-automatic dual-use crop stalk cutting force tester |
| CN202393658U (en) * | 2011-11-28 | 2012-08-22 | 中国农业大学 | Shearing experiment device of biomass straw |
| CN206177727U (en) * | 2016-10-14 | 2017-05-17 | 内蒙古农业大学 | Broken characteristic test device of straw |
-
2018
- 2018-10-10 CN CN201811213321.4A patent/CN109374437B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6422091B1 (en) * | 2000-07-20 | 2002-07-23 | Playtex Products, Inc. | Apparatus for testing the life expectancy of a straw |
| JP2015062011A (en) * | 2013-08-20 | 2015-04-02 | 株式会社Ihi | Cutting test apparatus |
| CN107589025A (en) * | 2016-07-10 | 2018-01-16 | 李月梅 | Portable rural crop material shears force measuring instrument |
| CN207610949U (en) * | 2017-10-24 | 2018-07-13 | 福建农林大学 | Hand-held Jujun grasses stalk experimental rig |
Non-Patent Citations (2)
| Title |
|---|
| 全电四驱多功能玉米收获试验台设计与关键部件分析;张银平;《中国优秀硕士学位论文全文数据库 农业科技辑》;20140115(第01期);D044-41 * |
| 番茄收获机喂入机构运动特性分析与参数优化;周军平等;《农业机械学报》;20131031;第44卷;第75-79页和第85页 * |
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| CN109374437A (en) | 2019-02-22 |
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