CN114964574B - Test device and method for measuring alfalfa modulation stress - Google Patents
Test device and method for measuring alfalfa modulation stress Download PDFInfo
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- CN114964574B CN114964574B CN202210564337.XA CN202210564337A CN114964574B CN 114964574 B CN114964574 B CN 114964574B CN 202210564337 A CN202210564337 A CN 202210564337A CN 114964574 B CN114964574 B CN 114964574B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
Abstract
The invention belongs to the field of pressure test and test, and particularly relates to a test device and a method for measuring alfalfa modulation stress. The experimental device comprises a data acquisition device (1), a wire (2), a fixed beam wire coil base (3), a fixed beam wire coil (5), a beam wire coil (18), a coupler (19), a rotating beam wire coil (20), a frame (31), a flattening roller (32), a strain gauge (33), a flattening roller bearing (34) and a flattening roller main shaft (35); by designing the test device for measuring the acting force between the alfalfa and the roller in the modulation process, the stress condition in the alfalfa modulation process can be clarified, the structural parameters of the modulation mechanism can be optimized, and important guidance is provided for designing and optimizing the modulation mechanism and improving the alfalfa modulation quality.
Description
Technical Field
The invention belongs to the field of pressure test and test, and particularly relates to a test device and a method for measuring alfalfa modulation stress.
Background
Currently, alfalfa modulation force measuring devices are mainly used for measuring compaction between rollers, and the force measuring devices for measuring interaction force between a roller tooth wall and alfalfa are relatively few, which is mainly caused by a rotary working mode of a flattening roller. The stress type and the stress size in the alfalfa modulation process are determined, and the alfalfa modulation method has important significance for optimizing the structural parameters of the modulation mechanism and improving the alfalfa modulation quality.
Disclosure of Invention
The invention aims to provide a test device and a test method for measuring alfalfa modulation stress, and the test device for measuring the acting force between alfalfa and a roller in the modulation process can be designed to be capable of clearly determining the stress condition in the alfalfa modulation process, thereby being beneficial to optimizing the structural parameters of a modulation mechanism and providing important guidance for designing and optimizing the modulation mechanism and improving the alfalfa modulation quality.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the test device for measuring alfalfa modulation stress comprises a data acquisition device 1, a wire 2, a fixed beam wire coil base 3, a fixed beam wire coil 5, a beam wire coil 18, a coupler 19, a rotary beam wire coil 20, a frame 31, a flattening roller 32, a strain gauge 33, a flattening roller bearing 34 and a flattening roller main shaft 35; wherein, the liquid crystal display device comprises a liquid crystal display device,
the rotating beam wire coil 20 is arranged on the rack 31, the rotating beam wire coil 20 comprises a rotating beam wire coil outer disc 20-1, a rotating beam wire coil bearing 21 and a rotating beam wire coil inner disc 23, and the rotating beam wire coil bearing 21 is positioned between the rotating beam wire coil outer disc 20-1 and the rotating beam wire coil inner disc 23, so that the inner disc and the outer disc can rotate relatively and independently;
the inner rotary wire harness disc 23 is provided with a plurality of rotary wire harness disc wire harness holes 22, and the distance h1 from the circle center of the rotary wire harness disc wire harness holes 22 to the circle center of the rotary wire harness disc 20 is the same as the distance h from the tooth tops of the flattening rollers 32 to the axle center, so that the wire between the rotary wire harness disc 20 and the flattening rollers 32 is prevented from being pulled, and the wire is prevented from being damaged; the center of the inner disc 23 of the rotary beam disc is provided with a shaft hole 27, and the diameter of the shaft hole 27 is the same as that of the main shaft 35 of the flattening roller;
one end of the flattening roller main shaft 35 is arranged in the shaft hole 27, and the other end of the flattening roller main shaft 35 is rotatably supported on the frame 31 through a flattening roller bearing 34; the pinch roller 32 is rotatably mounted between the rotating beam disc 20 and the pinch roller bearing 34 by a pinch roller spindle 35;
the rotating beam coil outer disc 20-1 remains stationary and the rotating beam coil inner disc 23 rotates with the pinch roller 32 at the same angular velocity;
a beam shaft 18 is arranged between the fixed beam wire coil 5 and the rotary beam wire coil 20, and the beam shaft 18 is connected with a flattening roller main shaft 35 through a coupler 19;
the fixed beam wire coil 5 is arranged on the fixed beam wire coil base 3 and is placed between the data collector 1 and the rack 31; the fixed beam wire coil 5 comprises a fixed beam wire coil outer disc 5-1, a fixed beam wire coil outer ring bearing 6, a fixed beam wire coil inner disc 8 and a fixed beam wire coil inner ring bearing 14, wherein the fixed beam wire coil outer ring bearing 6 is positioned between the fixed beam wire coil outer disc 5-1 and the fixed beam wire coil inner disc 8, so that the inner disc and the outer disc can rotate relatively and independently;
the fixed beam wire coil inner disc 8 is provided with a plurality of fixed beam wire coil wire harness holes 7, and the distance h2 between the circle center of the fixed beam wire coil wire harness holes 7 and the circle center of the fixed beam wire coil inner disc 8 is smaller than the distance h between the tooth tops of the flattening rollers 32 and the axle center, so that the wire between the fixed beam wire coil 5 and the rotary beam wire coil 20 starts to wind the beam wire shaft 18 at one side close to the fixed beam wire coil 5 in the working process;
the center of the inner disc 8 of the fixed beam wire coil is provided with an inner ring bearing 14 of the fixed beam wire coil, the inner diameter of the inner ring bearing 14 of the fixed beam wire coil is the same as the diameter of the beam wire shaft 18, so that the inner disc 8 of the fixed beam wire coil and the beam wire shaft 18 can move relatively and independently;
before data acquisition, the first fixing piece 16 and the second fixing piece 10 are used for connecting the outer disc 5-1 of the fixed wire harness disc with the inner disc 8 of the fixed wire harness disc, so that the inner disc 8 of the fixed wire harness disc is kept static in the data acquisition process, and meanwhile, wires between the fixed wire harness disc 5 and the data acquisition device 1 are kept static;
the data acquisition device 1 is connected with the wire 2, the tail end of the wire 2 is connected with a strain gauge 33, the wire 2 sequentially passes through the fixed wire harness disc wire harness hole 7 and the rotary wire harness disc wire harness hole 22, the wire 2 is adhered to the side wall of the roller teeth of the flattening roller along the thread direction of the flattening roller 32, and the strain gauge 33 is adhered to the side wall of the roller teeth of the flattening roller by using an adhesive tape.
The rotary beam wire disc outer disc 20-1 is provided with a rotary beam wire disc outer disc first screw hole 28 and a rotary beam wire disc outer disc second screw hole 24, and the rack 31 is provided with a rack first screw hole 30 and a rack second screw hole 26; the rotary harness cord reel outer plate 20-1 is connected with the frame 31 by bolts, the third fixing plate 29 and the fourth fixing plate 25, and the frame 31 and the rotary harness cord reel outer plate 20-1 are kept stationary after the connection.
The inner disk 8 of the fixed beam wire disk is provided with a first screw hole 15 of the inner disk of the fixed beam wire disk and a second screw hole 9 of the inner disk of the fixed beam wire disk.
The fixed beam wire disc outer disc 5-1 is provided with a fixed beam wire disc outer disc first screw hole 4 and a fixed beam wire disc outer disc second screw hole 11; the outer disc 5-1 of the fixed beam wire disc is connected with the base 3 of the fixed beam wire disc by bolts, so that the outer disc 5-1 of the fixed beam wire disc is always kept stationary.
The fixed beam wire coil outer disc 5-1 is also provided with a third screw hole 17 of the fixed beam wire coil and a fourth screw hole 12 of the fixed beam wire coil.
The surface of the inner disc 8 of the fixed beam disc is fixedly connected with a handle 13.
A method of using the test device for measuring alfalfa modulation stress, the method comprising the steps of:
after the equipment is installed, connecting the wires into the data collector 1, sequentially passing through the wire harness hole 7 of the fixed wire harness disc and the wire harness hole 22 of the rotary wire harness disc, ensuring that the length of the wires between the fixed wire harness disc 5 and the rotary wire harness disc 20 is more than 2 times of the distance between the fixed wire harness disc 5 and the rotary wire harness disc 20, adhering the strain gauges 33 at the tail ends of the wires to the side wall of the roller teeth of the flattening roller by using adhesive tapes, and adhering the wires to the side wall of the roller teeth of the flattening roller along the side wall;
the motor is turned on to enable the flattening roller 32 to start rotating, alfalfa starts to be fed into the position where the strain gauge 33 is stuck, after the alfalfa contacts the strain gauge 33, the strain gauge 33 deforms due to the extrusion effect, and the data acquisition device 1 records the obtained data in real time;
when the test is completed or the number of turns of the wire wound around the wire harness reel 18 is excessive, the rotation of the pinch roller 32 is stopped, the first fixing piece 16 and the second fixing piece 10 are removed, the handle 13 is used for rotationally fixing the inner disk 8 of the wire harness reel in the opposite direction of the rotation of the pinch roller, and the wire wound around the wire harness reel 18 is removed, so that the subsequent test is facilitated.
Compared with the prior art, the invention has the beneficial effects that:
by designing the test device for measuring the acting force between the alfalfa and the roller in the modulation process, the stress condition in the alfalfa modulation process can be clarified, the structural parameters of the modulation mechanism can be optimized, and important guidance is provided for designing and optimizing the modulation mechanism and improving the alfalfa modulation quality.
Drawings
FIGS. 1 and 2 are schematic diagrams of a test apparatus for forces between alfalfa and rollers during alfalfa modulation;
FIG. 3 is a schematic diagram of a fixed beam drum;
fig. 4 is a schematic diagram of a rotating beam drum and a frame.
Wherein the reference numerals are as follows:
1. data collector 2, wire
3. Fixed beam wire disc base 4 and fixed beam wire disc outer disc first screw hole
5. Fixed beam line disk 5-1 and fixed beam line disk outer disk
6. Fixed beam disc outer ring bearing 7 and fixed beam disc wire harness hole
8. Inner disk 9 of fixed beam wire disk and second screw hole of inner disk of fixed beam wire disk
10. Second fixing piece 11 and second screw hole for fixing outer disc of beam disc
12. Fourth screw hole 13 and handle of fixed beam line disk
14. Inner ring bearing 15 of fixed wire harness disc and first screw hole of inner disc of fixed wire harness disc
16. The first fixing piece 17 and the third screw hole of the fixed wire harness disc
18. Beam shaft 19, shaft coupling
20. Rotary wire harness disc 20-1 and rotary wire harness disc outer disc
21. Rotary wire harness disc bearing 22 and rotary wire harness disc wire harness hole
23. Inner disc 24 of rotary wire harness disc and second screw hole of outer disc of rotary wire harness disc
25. Fourth fixing piece 26 and second screw hole of frame
27. Shaft hole 28, first screw hole of outer disc of rotary beam disc
29. Third fixing piece 30, first screw hole of frame
31. Frame 32, pinch roller
33. Strain gauge 34 and flattening roller bearing
35. Flattening roller spindle
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1 and 2, the invention provides a test device for measuring alfalfa modulation stress, which comprises a data collector 1, a wire 2, a fixed beam coil base 3, a fixed beam coil 5, a beam coil 18, a coupler 19, a rotating beam coil 20, a rack 31, a flattening roller 32, a strain gauge 33, a flattening roller bearing 34 and a flattening roller main shaft 35. Wherein, the liquid crystal display device comprises a liquid crystal display device,
the rotating beam coil 20 is mounted on a frame 31, as shown in fig. 4, the rotating beam coil 20 includes a rotating beam coil outer disc 20-1, a rotating beam coil bearing 21 and a rotating beam coil inner disc 23, and the rotating beam coil bearing 21 is located between the rotating beam coil outer disc 20-1 and the rotating beam coil inner disc 23, so that the inner disc and the outer disc can rotate independently.
The inner disc 23 of the rotating beam disc is provided with a plurality of beam disc wire holes 22, and the distance h1 from the center of the beam disc wire holes 22 to the center of the rotating beam disc 20 is the same as the distance h from the tooth tops of the flattening rollers 32 to the axis, so that the wire between the rotating beam disc 20 and the flattening rollers 32 is prevented from being pulled, and the wire is prevented from being damaged. The center of the inner disc 23 of the rotary beam disc is provided with a shaft hole 27, and the diameter of the shaft hole 27 is the same as that of the main shaft 35 of the flattening roller.
One end of the squeeze roller main shaft 35 is installed in the shaft hole 27, and the other end of the squeeze roller main shaft 35 is rotatably supported on the frame 31 through a squeeze roller bearing 34. The pinch roller 32 is rotatably mounted between the rotating beam coil 20 and the pinch roller bearings 34 by a pinch roller spindle 35. The pinch roller spindle 35 is powered by a motor.
The rotary beam disc outer disc 20-1 is provided with a rotary beam disc outer disc first screw hole 28 and a rotary beam disc outer disc second screw hole 24, and the frame 31 is provided with a frame first screw hole 30 and a frame second screw hole 26. The rotary harness cord reel outer plate 20-1 is connected with the frame 31 by bolts, the third fixing plate 29 and the fourth fixing plate 25, and the frame 31 and the rotary harness cord reel outer plate 20-1 are kept stationary after the connection.
The rotating beam disc outer disc 20-1 remains stationary during the test and the rotating beam disc inner disc 23 rotates with the pinch roller 32 at the same angular velocity.
A beam shaft 18 is installed between the fixed beam wire coil 5 and the rotary beam wire coil 20, and the beam shaft 18 is connected with a main shaft 35 of the flattening roller through a coupler 19.
The fixed wire harness disc 5 is arranged on the fixed wire harness disc base 3 and is placed between the data collector 1 and the frame 31. As shown in fig. 3, the fixed beam coil 5 includes a fixed beam coil outer disc 5-1, a fixed beam coil outer ring bearing 6, a fixed beam coil inner disc 8 and a fixed beam coil inner ring bearing 14, and the fixed beam coil outer ring bearing 6 is located between the fixed beam coil outer disc 5-1 and the fixed beam coil inner disc 8, so that the inner disc and the outer disc can rotate independently.
The fixed beam wire coil inner disc 8 is provided with a plurality of fixed beam wire coil wire harness holes 7, and the distance h2 between the circle center of the fixed beam wire coil wire harness holes 7 and the circle center of the fixed beam wire coil inner disc 8 is smaller than the distance h between the tooth tops of the flattening rollers 32 and the axle center, so that the wire between the fixed beam wire coil 5 and the rotary beam wire coil 20 starts to wind the beam wire shaft 18 at one side close to the fixed beam wire coil 5 in the working process.
The fixed beam wire coil inner ring bearing 14 is arranged in the center of the fixed beam wire coil inner ring 8, the inner diameter of the fixed beam wire coil inner ring bearing 14 is the same as the diameter of the beam wire shaft 18, and the fixed beam wire coil inner ring 8 and the beam wire shaft 18 can move independently.
The inner disk 8 of the fixed beam wire disk is provided with a first screw hole 15 of the inner disk of the fixed beam wire disk and a second screw hole 9 of the inner disk of the fixed beam wire disk.
The fixed beam wire disc outer disc 5-1 is provided with a fixed beam wire disc outer disc first screw hole 4 and a fixed beam wire disc outer disc second screw hole 11. The outer disc 5-1 of the fixed beam wire disc is connected with the base 3 of the fixed beam wire disc by bolts, so that the outer disc 5-1 of the fixed beam wire disc is always kept stationary.
The fixed beam wire coil outer disc 5-1 is also provided with a third screw hole 17 of the fixed beam wire coil and a fourth screw hole 12 of the fixed beam wire coil.
Before data acquisition, the outer disc 5-1 of the fixed beam wire coil is connected with the inner disc 8 of the fixed beam wire coil by using bolts, the first fixing sheet 16 and the second fixing sheet 10, so that the inner disc 8 of the fixed beam wire coil is kept static in the data acquisition process, and meanwhile, wires between the fixed beam wire coil 5 and the data acquisition device 1 are kept static.
The surface of the inner disc 8 of the fixed beam disc is fixedly connected with a handle 13. After the test is completed, the first fixing piece 16 and the second fixing piece 10 are removed, and the wire is removed from the wire harness reel 18 by rotating the inner disk 8 of the fixed wire harness reel in the opposite direction to the direction of the pinch roller using the handle 13.
The data acquisition device 1 is connected with the wire 2, the tail end of the wire 2 is connected with a strain gauge 33, the wire 2 sequentially passes through the fixed wire harness disc wire harness hole 7 and the rotary wire harness disc wire harness hole 22, the wire 2 is adhered to the side wall of the roller teeth of the flattening roller along the thread direction of the flattening roller 32, and the strain gauge 33 is adhered to the side wall of the roller teeth of the flattening roller by using an adhesive tape.
In the test process, the flattening roller 32 is rotated by the external power to drive the wires wound on the flattening roller 32 to rotate together with the inner disk 23 of the rotary wire harness disk, and the wires between the fixed wire harness disk 5 and the rotary wire harness disk 20 are kept static after the lengths of the wires between the fixed wire harness disk 5 and the rotary wire harness disk 20 are ensured to be longer than the distance between the fixed wire harness disk 5 and the rotary wire harness disk 20, so that the wires between the fixed wire harness disk 5 and the data acquisition device 1 are kept static. When the alfalfa contacts with the strain gage 33, the strain gage 33 deforms, and signals are transmitted to the data acquisition device 1, so that the real-time measurement of acting force between the alfalfa and the roller teeth in the alfalfa modulating process is realized.
A method for using a test device for measuring alfalfa modulation stress, comprising the steps of:
after the equipment is installed, the wires are connected into the data acquisition device 1 and sequentially pass through the fixed wire harness disc wire harness hole 7 and the rotary wire harness disc wire harness hole 22, the length of the wires between the fixed wire harness disc 5 and the rotary wire harness disc 20 is ensured to be more than 2 times of the distance between the fixed wire harness disc 5 and the rotary wire harness disc 20, the strain gauges 33 at the tail ends of the wires are adhered to the side wall of the roller teeth of the flattening roller by using adhesive tapes, and the wires are also adhered to the side wall of the roller teeth of the flattening roller along the side wall. The motor is turned on to start the rotation of the flattening roller 32, the alfalfa starts to be fed into the position where the strain gauge 33 is stuck, and after the alfalfa contacts the strain gauge 33, the strain gauge 33 is deformed due to the extrusion effect, and the data acquisition device 1 records the obtained data in real time. When the test is completed or the number of turns of the wire wound around the wire harness reel 18 is excessive, the rotation of the pinch roller 32 is stopped, the first fixing piece 16 and the second fixing piece 10 are removed, the handle 13 is used for rotationally fixing the inner disk 8 of the wire harness reel in the opposite direction of the rotation of the pinch roller, and the wire wound around the wire harness reel 18 is removed, so that the subsequent test is facilitated.
Claims (7)
1. The utility model provides a measure test device of alfalfa modulation atress which characterized in that: the test device comprises a data collector (1), a wire (2), a fixed beam wire coil base (3), a fixed beam wire coil (5), a beam wire coil (18), a coupler (19), a rotating beam wire coil (20), a frame (31), a flattening roller (32), a strain gauge (33), a flattening roller bearing (34) and a flattening roller main shaft (35); wherein, the liquid crystal display device comprises a liquid crystal display device,
the rotating beam wire coil (20) is arranged on the frame (31), the rotating beam wire coil (20) comprises a rotating beam wire coil outer disc (20-1), a rotating beam wire coil bearing (21) and a rotating beam wire coil inner disc (23), and the rotating beam wire coil bearing (21) is positioned between the rotating beam wire coil outer disc (20-1) and the rotating beam wire coil inner disc (23) so as to ensure that the inner disc and the outer disc can rotate relatively and independently;
the inner disc (23) of the rotary wire harness disc is provided with a plurality of wire harness disc wire harness holes (22), the distance h1 from the circle center of the wire harness disc wire harness holes (22) to the circle center of the rotary wire harness disc (20) is the same as the distance h from the tooth tops of the flattening rollers (32) to the axle center, so that the wire between the rotary wire harness disc (20) and the flattening rollers (32) is prevented from being pulled, and the wire is prevented from being damaged; the center of the inner disc (23) of the rotary beam disc is provided with a shaft hole (27), the diameter of the shaft hole (27) is the same as that of the main shaft (35) of the flattening roller;
one end of the flattening roller main shaft (35) is arranged in the shaft hole (27), and the other end of the flattening roller main shaft (35) is rotatably supported on the frame (31) through a flattening roller bearing (34); the flattening roller (32) is rotatably arranged between the rotary beam disc (20) and the flattening roller bearing (34) through a flattening roller main shaft (35);
the outer disc (20-1) of the rotating beam disc is kept static, and the inner disc (23) of the rotating beam disc rotates with the flattening roller (32) at the same angular speed;
a beam shaft (18) is arranged between the fixed beam wire coil (5) and the rotary beam wire coil (20), and the beam shaft (18) is connected with a flattening roller main shaft (35) through a coupler (19);
the fixed beam wire coil (5) is arranged on the fixed beam wire coil base (3) and is placed between the data acquisition device (1) and the frame (31); the fixed beam wire coil (5) comprises a fixed beam wire coil outer disc (5-1), a fixed beam wire coil outer ring bearing (6), a fixed beam wire coil inner disc (8) and a fixed beam wire coil inner ring bearing (14), wherein the fixed beam wire coil outer ring bearing (6) is positioned between the fixed beam wire coil outer disc (5-1) and the fixed beam wire coil inner disc (8), so that the inner disc and the outer disc can rotate relatively and independently;
the fixed beam wire coil inner disc (8) is provided with a plurality of fixed beam wire coil wire harness holes (7), the distance h2 from the circle center of the fixed beam wire coil wire harness holes (7) to the circle center of the fixed beam wire coil inner disc (8) is smaller than the distance h from the tooth tops of the flattening rollers (32) to the axle center, and the wire between the fixed beam wire coil (5) and the rotary beam wire coil (20) starts to wind the beam wire spool (18) at one side close to the fixed beam wire coil (5) in the working process;
the center of the inner disc (8) of the fixed beam wire disc is provided with an inner ring bearing (14) of the fixed beam wire disc, the inner diameter of the inner ring bearing (14) of the fixed beam wire disc is the same as the diameter of the beam wire shaft (18), and the inner disc (8) of the fixed beam wire disc and the beam wire shaft (18) can move relatively and independently;
before data acquisition, the first fixing piece (16) and the second fixing piece (10) are used for connecting the outer disc (5-1) of the fixed beam wire coil with the inner disc (8) of the fixed beam wire coil, so that the inner disc (8) of the fixed beam wire coil is kept static in the data acquisition process, and meanwhile, a lead between the fixed beam wire coil (5) and the data acquisition device (1) is kept static;
the data acquisition device is characterized in that the data acquisition device (1) is connected with the lead (2), the tail end of the lead (2) is connected with a strain gauge (33), the lead (2) sequentially passes through the fixed wire harness disc wire harness hole (7) and the rotary wire harness disc wire harness hole (22) and is adhered to the side wall of the roller tooth of the flattening roller along the thread direction of the flattening roller (32), and the strain gauge (33) is adhered to the side wall of the roller tooth of the flattening roller by using an adhesive tape.
2. The test device for measuring alfalfa modulation stress as recited in claim 1, wherein: the rotary beam wire disc outer disc (20-1) is provided with a rotary beam wire disc outer disc first screw hole (28) and a rotary beam wire disc outer disc second screw hole (24), and the frame (31) is provided with a frame first screw hole (30) and a frame second screw hole (26); the rotary beam wire disc outer disc (20-1) is connected with the frame (31) by using bolts, the third fixing piece (29) and the fourth fixing piece (25), and the frame (31) and the rotary beam wire disc outer disc (20-1) keep static after connection.
3. The test device for measuring alfalfa modulation stress as recited in claim 1, wherein: the inner disc (8) of the fixed beam wire disc is provided with a first screw hole (15) of the inner disc of the fixed beam wire disc and a second screw hole (9) of the inner disc of the fixed beam wire disc.
4. The test device for measuring alfalfa modulation stress as recited in claim 1, wherein: the outer disc (5-1) of the fixed beam wire disc is provided with a first screw hole (4) of the outer disc of the fixed beam wire disc and a second screw hole (11) of the outer disc of the fixed beam wire disc; the outer disc (5-1) of the fixed wire harness disc is connected with the base (3) of the fixed wire harness disc by bolts, so that the outer disc (5-1) of the fixed wire harness disc is always kept static.
5. The measurement of claim 1 the test device for the alfalfa modulation stress, the method is characterized in that: the outer disc (5-1) of the fixed beam wire disc is also provided with a third screw hole (17) of the fixed beam wire disc and a fourth screw hole (12) of the fixed beam wire disc.
6. The test device for measuring alfalfa modulation stress as recited in claim 1, wherein: the surface of the inner disc (8) of the fixed beam disc is fixedly connected with a handle (13).
7. A method using the test device for measuring alfalfa modulation stress according to any one of claims 1 to 6, wherein: the method comprises the following steps:
after the equipment is installed, connecting the wires into a data acquisition device (1), sequentially passing through a fixed wire harness disc wire harness hole (7) and a rotary wire harness disc wire harness hole (22), simultaneously ensuring that the length of the wires between the fixed wire harness disc (5) and the rotary wire harness disc (20) is more than 2 times of the distance between the fixed wire harness disc and the rotary wire harness disc, adhering strain gauges (33) at the tail ends of the wires to the side wall of a flattening roller tooth by using adhesive tapes, and adhering the wires to the side wall of the flattening roller tooth along the side wall;
starting a motor to enable the flattening roller (32) to rotate, starting feeding alfalfa at the position where the strain gauge (33) is stuck, enabling the strain gauge (33) to deform due to extrusion after the alfalfa contacts with the strain gauge (33), and recording obtained data in real time by the data acquisition device (1);
when the test is completed or the number of turns of the wire winding bobbin (18) is excessive, the rotation of the pinch roller (32) is stopped, the first fixing piece (16) and the second fixing piece (10) are taken down, the handle (13) is used for rotating and fixing the inner disc (8) of the wire harness disc along the rotation reverse direction of the flattening roller, and the wire wound on the Shu Xianzhou (18) is taken down, so that the subsequent test is facilitated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210564337.XA CN114964574B (en) | 2022-05-23 | 2022-05-23 | Test device and method for measuring alfalfa modulation stress |
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| CN202210564337.XA CN114964574B (en) | 2022-05-23 | 2022-05-23 | Test device and method for measuring alfalfa modulation stress |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110342305A (en) * | 2019-07-08 | 2019-10-18 | 东华大学 | A kind of material volume interlayer pressure on-line measurement device |
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