CN110398431A - A kind of soil resistance measuring device - Google Patents
A kind of soil resistance measuring device Download PDFInfo
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- CN110398431A CN110398431A CN201910705724.9A CN201910705724A CN110398431A CN 110398431 A CN110398431 A CN 110398431A CN 201910705724 A CN201910705724 A CN 201910705724A CN 110398431 A CN110398431 A CN 110398431A
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- 239000002689 soil Substances 0.000 title claims abstract description 32
- 239000002033 PVDF binder Substances 0.000 claims abstract description 25
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims description 46
- 230000001681 protective effect Effects 0.000 claims description 28
- 238000012545 processing Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000008188 pellet Substances 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 7
- 238000007596 consolidation process Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241001149930 Protura <class> Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010496 root system development Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G01N3/40—Investigating hardness or rebound hardness
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
- G01N2203/0623—Electrical or magnetic indicating, recording or sensing means using piezoelectric gauges
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
- G01N2203/0629—Electrical or magnetic indicating, recording or sensing means using thin films, paintings
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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 Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of soil resistance measuring device category reading intelligent agriculture equipment detection technique field, the advantages of present invention combination electronic control technology and Optimization of Mechanical Design, utilize the self character of PVDF piezoelectric membrane, design a kind of consolidation measuring device with spiral flood dragon shape, its helicoidal structure is located inside the groove IV of shell, make PVDF piezoelectric membrane by the power from soil to make PVDF piezoelectric membrane be squeezed effect and since spiral flood dragon characteristic makes the electric signal generated be overlapped generation electric signal by gear drive, pass through corresponding conversion circuit, electric signal is passed into LCD display devices color screen, design not only ensure that the good leakproofness of measuring device in this way, it is also significantly increased to the test device service life.Solves the disadvantages of existing test device is easily big into dust and to the loss of component；Operation of the present invention is simple, can effectively measure the amount consolidation of soil, adapt to different types of soil, have a wide range of application.
Description
Technical field
The invention belongs to reading intelligent agricultures to equip detection technique field, and in particular to a kind of soil resistance measuring device.
Background technique
Mechanization in recent years is in ever more popular all over the world, but with various large-scale agricultural modernization field machinery equipment
Extensive, frequent use.No matter developed country or developing country showing of all suffering from that soil compression problem is on the rise
Shape.Soil compression not only break ground with the germination of crop yield, seed rate and plant root system development situation it is closely related, together
When also directly affect the migration process of soil moisture.
The consequence of soil compression is to change topsoil porosity significantly so as to cause gas permeability of soil reduction, surface layer
The relative increase of reduction and runoff that water infiltrates.To the quantitative description of soil compactibility, cone index is generally used in the world, it is fixed
Justice is circular cone soil resistance suffered by unit floor space on nose cone during injection soil.Its structure is designed and is grasped
Making Europe and the U.S. has respective specification, and widely used at present is that the soil that American Society of Agriculture Engineers is recommended is solid
Spend measurement standard.The standard essentially describes the conehead structure of fixed point vertical section soil compactibility measurement, and in Field Scale
Under, Handheld soil consolidation instrument has easy to carry, can measure the consolidation in corresponding small-scale soil whenever and wherever possible, carry
It is at low cost, test the advantages that quick.
Summary of the invention
The purpose of the present invention is to provide a kind of soil that can be accurately and timely measured the consolidation in certain area
Resistance measurement apparatus.
The present invention is made of measuring mechanism A, subsidiary body B, transmission mechanism C and signal processing and indication mechanism D, wherein surveying
Piezoelectric pellet 28, PVDF piezoelectric membrane 29 and the support frame 31 of measuring mechanism A is located in the groove IV 33 of subsidiary body B, measuring machine
The piezoelectric transducer 16 that piezoelectric pellet 28, PVDF piezoelectric membrane 29 and support frame 31 in structure A form passes through at conducting wire and signal
Reason with indication mechanism D in number processing circuit 17, A/D conversion circuit 18, microcontroller 19, display module 20, power module 21,
Locating module 34, memory module 35 connect, to realize the conversion of electric signal to digital signal, are superimposed telecommunications using helical design
Number and by electric signal transmission give each module, improve the measurement accuracy of device；Signal processing electricity in signal processing and indication mechanism D
Road 17, A/D conversion circuit 18, microcontroller 19 and power module 21 are mounted in the groove I 10 of subsidiary body B, are easy to use
Person's maintenance；Display module 20 is mounted on II 7 upper surface of housing of subsidiary body B, and the resistance of surveyed soil is observed convenient for user；
Display module 20 is mounted on II 7 upper surface of housing of subsidiary body B, and the resistance of surveyed soil is observed convenient for user.
The probe 13 of transmission mechanism C is placed in the protective shell I 1, housing I 4 and spring 3 of subsidiary body B, and 13 outer rings of popping one's head in
It is contacted with protective shell I 1, housing I 4 and 3 inner ring of spring, plays the role of protection probe 13 and parking position accuracy；Transmission mechanism C's is interior
Cylinder 12 is located in subsidiary body B in the groove I 10 of shell 5, is bonded with 5 inner surface of shell, and the contact with groove I 10 of inner cylinder 12 is protected
Having demonstrate,proved inner cylinder 12 can move according to desired trajectory, and sidesway does not occur；In rotating shaft 25 and subsidiary body B in transmission mechanism C
Guide-track groove 24 it is affixed, play the role of fixed gear and be conveniently replaceable gear to increase the adaptability of device.
The measuring mechanism A is made of piezoelectric pellet 28, PVDF piezoelectric membrane 29, groove III 30, support frame 31, wherein
PVDF piezoelectric membrane 29 is adhered in 31 upper surface of support frame, and 31 lower surface of support frame is equipped with the groove III of fixed 28 position of piezoelectric pellet
30, play the effect fixed to piezoelectric pellet 28；PVDF piezoelectric membrane 29 is attached in the shape of a spiral on support frame 31, convenient for pressure
The electric signal that electric bead 28 generates is overlapped, and improves the precision of measuring device.
The subsidiary body B is by fixing I E1 of guide rail bowl assembly, fixed II E2 of guide rail bowl assembly, fixed guide rail bowl assembly
III E3, protective shell I 1, protective shell II 2, spring 3, housing I 4, shell 5, handle to 6, housing II 7, groove I 10, groove II 23,
Bionical bulge-structure 27, groove IV 33 form, wherein fixed I E1 of guide rail bowl assembly, fixed II E2 of guide rail bowl assembly, fixed guide rail
III E3 structure of bowl assembly is identical, is made of guide-track groove 24, rotating shaft 25, hole 32, and guide-track groove 24 is located in housing II 7
Portion, rotating shaft 25 and guide-track groove 24 are hinged, hole 32 is located at 24 top of guide-track groove；Fixed I E1 of guide rail bowl assembly, fixed guide-track groove group
II E2 of part, fixed III E3 of guide rail bowl assembly are distributed around the central axis of housing II 7 in 120 °；3 upper end of spring and I 4 lower end of housing are solid
It connects, 3 lower end of spring and I 1 upper end of protective shell are affixed, play the role of protection probe 13 and device quick and precisely resets.
II 2 upper end inner ring of protective shell and I 4 lower end outer ring of housing are affixed, II 2 lower part inner ring of protective shell and I 1 top of protective shell
Outer ring is slidably connected, and plays the role of protecting spring 3；Housing I 4 is fixed in 5 lower end of shell through bolt group II 26, and housing II 7 passes through
Bolt group I 15 is fixed in 5 upper end of shell；Handle is fixed at left and right sides of the nearly upper end of shell 56 two handles, on handle
Portion is covered with 1.4mm thickness rubber membrane, exerts a force convenient for user, and lower part design copies human body palm by force outer form, is more in line with
The palm of people is firmly accustomed to；Groove IV 33 is the groove inside shell 5.
I 1 lower part of protective shell and ground face contact, surface are the bionical bulge-structure 27 of point, and single shape is indulged
Section is segmented equation are as follows:
Y=x2, -3mm≤x≤3mm.
The transmission mechanism C is by I C1 of rack and pinion assembly, II C2 of rack and pinion assembly, III C3 of rack and pinion assembly, interior
Cylinder 12, probe 13, gasket 14, rotating shaft 25 form, wherein I C1 of rack and pinion assembly, II C2 of rack and pinion assembly and gear teeth
III C3 structure of bar assembly is identical, by gear I 8, rack gear I 9, rack gear II 11, gear II 22, middle gear I 8 and gear II
22 are welded as a whole, and are fixed on 24 inside of guide-track groove and are rotated by rotating shaft 25, gear I 8 and rack gear I 9 are intermeshed, rack gear
II 11 are intermeshed with gear II 22, and I 9 bottom of rack gear and gasket 14 are affixed；Rack gear I 9 has flank to engage with gear I 8, rack gear II
11 have flank to engage with gear II 22, and rack gear I 9 and rack gear II 11 are contacted without flank with guide-track groove 24；Rack and pinion assembly I
C1, II C2 of rack and pinion assembly and III C3 of rack and pinion assembly are placed in 12 upper end of inner cylinder in 120 degree of intervals, wherein rack-and-pinion group
I C1 of part, II C2 of rack and pinion assembly and III C3 three's bottom side of rack and pinion assembly are affixed by rack gear I 9 and gasket 14, and three
The person bottom other side then passes through rack gear II 11 and inner cylinder 12 is affixed；13 tops of popping one's head in are threadedly coupled with 12 lower end center of inner cylinder.
The signal processing and indication mechanism D by piezoelectric transducer 16, signal processing circuit 17, A/D conversion circuit 18,
Microcontroller 19, display module 20, power module 21, locating module 34, memory module 35 form, wherein signal processing circuit
17, A/D conversion circuit 18, microcontroller 19, display module 20, locating module 34, memory module 35 is with power module 21 through leading
Line connects, and charge conversion caused by piezoelectric transducer 16 is voltage signal, puts voltage signal using voltage amplifier circuit
Greatly, this voltage value is converted to digital signal and passes to by A/D conversion circuit 18 shows through display module 20 after MCU microcontroller 19
Onto LCD display, convenient for users to real time readouts.
The cross section of the inner cylinder 12 is the regular curve being made of four sections of same curves, by the section wherein one section of curve
Ab is placed in XOY coordinate system, and the axis intersected using inner cylinder 12 with longitudinal section is X-axis, and with the 5 outer circle center of circle of shell for O point, Y-axis is from O
Point issues and perpendicular to X-axis, 12 cross section of inner cylinder wherein curvilinear equation of one section of curve ab in XOY coordinate system are as follows:
Y=0.28602+2.44956x-0.0673x2
Wherein: x belongs to [0,37], unit mm.
The cross-section curve of inner cylinder 12 can play fixed 12 movement position of inner cylinder, lubrication conveniently to increase in the device
The effect of device lifetime.
The advantages of present invention combination electronic control technology and Optimization of Mechanical Design, by the self character of PVDF piezoelectric membrane, if
A kind of consolidation measuring device with spiral flood dragon shape is counted, helicoidal structure is located inside the groove IV 33 of shell 5, passes through
Gear drive make PVDF piezoelectric membrane by the power from soil to make PVDF piezoelectric membrane be squeezed effect and due to
Spiral flood dragon characteristic makes the electric signal generated be overlapped generation electric signal, and by corresponding conversion circuit, electric signal is passed to
LCD display devices color screen, in this way design not only can guarantee the good leakproofness of measuring device, also have significantly to the test device service life
It improves.It can solve the disadvantages of existing test device is easily big into dust and to the loss of component.
The present invention utilizes the conductive characteristic of PVDF piezoelectric membrane, makes the more of PVDF piezoelectric membrane by the characteristic of spiral flood dragon
PVDF piezoelectric membrane is generated electric current and electric signal is handled and transmitted by layer superposition, and the amount that can effectively measure soil is hard
Solidity, measuring device of the invention is easy to operate and has a wide range of application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of soil resistance measuring device
Fig. 2 is the cross-sectional view of measuring mechanism A
Fig. 3 is the outside drawing of measuring mechanism A
Fig. 4 is the axonometric drawing of measuring mechanism A
Fig. 5 is the position distribution schematic diagram of rack and pinion assembly C1, C2, C3
Fig. 6 is the enlarged drawing of the part C1 in Fig. 5
Fig. 7 is the bottom view of measuring mechanism A
Fig. 8 is the schematic internal view of housing II 7
Fig. 9 is the enlarged drawing that III part E3 of guide rail guide rail slotware is fixed in Fig. 8
Figure 10 is the axonometric drawing of shell 5
Figure 11 is the top view of shell 5
Figure 12 is the bottom view of shell 5
Figure 13 is the enlarged drawing of e meaning in Fig. 2
Figure 14 is the partial enlarged view of measuring mechanism part A structure
Figure 15 is the stepwise schematic views of inner cylinder curve
Figure 16 is the curve graph of the XOY coordinate system of ab sections of inner cylinder cross section
Wherein: A. measuring mechanism B. subsidiary body C. transmission mechanism D. signal processing and indication mechanism C1. gear teeth
The fixed guide rail of fixed I E2. of guide rail bowl assembly of I C2. rack and pinion assembly of bar assembly, II C3. rack and pinion assembly, III E1. is led
II E3. of track slot part fixes III 1. protective shell of guide rail guide rail slotware, I 2. protective shell, II 3. spring, 4. housing, I 5. shell 6.
Handle is to 7. housing, II 8. gear, I 9. rack gear, I 10. groove I, 11. rack gear, II 12. inner cylinder 13., 14. gaskets of probe
15. I 16. piezoelectric transducer of bolt group, 17. signal processing circuit 18.A/D conversion circuit, 19. microcontroller 20. shows mould
Block 21. power module, 22. gear, II 23. groove II, 24. guide-track groove, 25. rotating shaft, 26. bolt groups II 27. are bionical convex
Play 28. 32. hole of piezoelectric pellet 29.PVDF piezoelectric membrane 30. groove, III 31. support frame of structure, 33. groove IV
Specific embodiment
The description present invention with reference to the accompanying drawing.
As shown in Figure 1, the present invention is by measuring mechanism A, subsidiary body B, transmission mechanism C and signal processing and indication mechanism D
Composition, wherein the piezoelectric pellet 28 of measuring mechanism A, PVDF piezoelectric membrane 29 and support frame 31 are located at the groove IV of subsidiary body B
In 33, the piezoelectric transducer 16 that piezoelectric pellet 28, PVDF piezoelectric membrane 29 and support frame 31 in measuring mechanism A form is by leading
Line and signal processing and number processing circuit 17 in indication mechanism D, A/D conversion circuit 18, microcontroller 19, display module 20,
Power module 21, locating module 34, memory module 35 connect, to realize the conversion of electric signal to digital signal；Signal processing
It is mounted on signal processing circuit 17, A/D conversion circuit 18, microcontroller 19 and the power module 21 in indication mechanism D attached
In the groove I 10 of mechanism B, display module 20 is mounted on II 7 upper surface of housing of subsidiary body B；The probe 13 of transmission mechanism C is set
In the protective shell I 1, housing I 4 and spring 3 of subsidiary body B, and pop one's head in 13 outer rings and protective shell I 1, housing I 4 and spring 3
Circle contact；The inner cylinder 12 of transmission mechanism C is located in subsidiary body B in the groove I 10 of shell 5, is bonded with 5 inner surface of shell；It passes
The guide-track groove 24 in rotating shaft 25 and subsidiary body B in motivation structure C is affixed.
Such as Fig. 2 to Fig. 4, shown in Fig. 7 to Figure 16, the measuring mechanism A by piezoelectric pellet 28, PVDF piezoelectric membrane 29,
Groove III 30, support frame 31 form, and wherein PVDF piezoelectric membrane 29 is adhered in 31 upper surface of support frame, and 31 lower surface of support frame is equipped with
The groove III 30 of fixed 28 position of piezoelectric pellet；PVDF piezoelectric membrane 29 is attached in the shape of a spiral on support frame 31.
The subsidiary body B is by fixing I E1 of guide rail bowl assembly, fixed II E2 of guide rail bowl assembly, fixed guide rail bowl assembly
III E3, protective shell I 1, protective shell II 2, spring 3, housing I 4, shell 5, handle to 6, housing II 7, groove I 10, groove II 23,
Bionical bulge-structure 27, groove IV 33 form, wherein fixed I E1 of guide rail bowl assembly, fixed II E2 of guide rail bowl assembly, fixed guide rail
III E3 structure of bowl assembly is identical, is made of guide-track groove 24, rotating shaft 25, hole 32, and guide-track groove 24 is located in housing II 7
Portion, rotating shaft 25 and guide-track groove 24 are hinged, hole 32 is located at 24 top of guide-track groove；Fixed I E1 of guide rail bowl assembly, fixed guide-track groove group
II E2 of part, fixed III E3 of guide rail bowl assembly are distributed around the central axis of housing II 7 in 120 °；3 upper end of spring and I 4 lower end of housing are solid
It connects, 3 lower end of spring and I 1 upper end of protective shell are affixed；II 2 upper end inner ring of protective shell and I 4 lower end outer ring of housing are affixed, protective shell II
2 lower part inner rings are slidably connected with I 1 top outer ring of protective shell；Housing I 4 is fixed in 5 lower end of shell, housing II 7 through bolt group II 26
5 upper end of shell is fixed in through bolt group I 15；Handle is fixed at left and right sides of the nearly upper end of shell 56 two handles；Groove
IV 33 be the groove inside shell 5.
I 1 lower part of protective shell and ground face contact, surface are the bionical bulge-structure 27 of point, and single shape is indulged
Section is segmented equation are as follows:
Y=x2, -3mm≤x≤3mm.
As shown in Figure 5 and Figure 6, the transmission mechanism C is by I C1 of rack and pinion assembly, II C2 of rack and pinion assembly, gear
III C3 of rack assembly, inner cylinder 12, probe 13, gasket 14 form, wherein I C1 of rack and pinion assembly, II C2 of rack and pinion assembly and
III C3 structure of rack and pinion assembly is identical, by gear I 8, rack gear I 9, rack gear II 11, gear II 22, middle gear I 8 with
Gear II 22 is welded as a whole, and is fixed on 24 inside of guide-track groove and is rotated by rotating shaft 25, gear I 8 is mutually nibbled with rack gear I 9
It closes, rack gear II 11 and gear II 22 are intermeshed, and I 9 bottom of rack gear and gasket 14 are affixed；Rack gear I 9 has flank to nibble with gear I 8
It closes, rack gear II 11 has flank to engage with gear II 22, and rack gear I 9 and rack gear II 11 are contacted without flank with guide-track groove 24；Gear teeth
I C1 of bar assembly, II C2 of rack and pinion assembly and III C3 of rack and pinion assembly are placed in 12 upper end of inner cylinder in 120 degree of intervals, wherein tooth
It takes turns I C1 of rack assembly, II C2 of rack and pinion assembly and III C3 three's bottom side of rack and pinion assembly and passes through rack gear I 9 and gasket
14 is affixed, and the three bottom other side then passes through rack gear II 11 and inner cylinder 12 is affixed；It pops one's head in 13 tops and 12 lower end center spiral shell of inner cylinder
Line connection.
As shown in Figure 1, the signal processing and indication mechanism D are by piezoelectric transducer 16, signal processing circuit 17, A/D
Conversion circuit 18, microcontroller 19, display module 20, power module 21, locating module 34, memory module 35 form, wherein believing
Number processing circuit 17, A/D conversion circuit 18, microcontroller 19, display module 20, locating module 34, memory module 35 and power supply
Module 21 is connected through conducting wire.
The cross section of the inner cylinder 12 is the regular curve being made of four sections of same curves, by the section wherein one section of curve
Ab is placed in XOY coordinate system, and the axis intersected using inner cylinder 12 with longitudinal section is X-axis, and with the 5 outer circle center of circle of shell for O point, Y-axis is from O
Point issues and perpendicular to X-axis, 12 cross section of inner cylinder wherein curvilinear equation of one section of curve ab in XOY coordinate system are as follows:
Y=0.28602+2.45256x-0.0673x2
Wherein: x belongs to [0,37], unit mm.
Claims (7)
1. a kind of soil resistance measuring device, which is characterized in that by measuring mechanism (A), subsidiary body (B), transmission mechanism (C) and
Signal processing and indication mechanism (D) are formed, wherein the piezoelectric pellet (28) of measuring mechanism (A), PVDF piezoelectric membrane (29) and branch
Support (31) is located in the groove IV (33) of subsidiary body (B), and the piezoelectric pellet (28) in measuring mechanism (A), PVDF piezoelectricity are thin
The piezoelectric transducer (16) of film (29) and support frame (31) composition by conducting wire and signal processing and indication mechanism (D) number at
Manage circuit (17), A/D conversion circuit (18), microcontroller (19), display module (20), power module (21), locating module
(34), memory module (35) connects, to realize the conversion of electric signal to digital signal；In signal processing and indication mechanism (D)
Signal processing circuit (17), A/D conversion circuit (18), microcontroller (19) and power module (21) be mounted on subsidiary body
(B) in groove I (10), display module (20) is mounted on housing II (7) upper surface of subsidiary body (B)；Transmission mechanism (C)
Probe (13) is placed in the protective shell I (1), housing I (4) and spring (3) of subsidiary body (B), and pop one's head in (13) outer ring and protection
Shell I (1), housing I (4) and the contact of spring (3) inner ring；The inner cylinder (12) of transmission mechanism (C) is located at shell in subsidiary body (B)
(5) it in groove I (10), is bonded with shell (5) inner surface；In rotating shaft (25) and subsidiary body (B) in transmission mechanism (C)
Guide-track groove (24) it is affixed.
2. soil resistance measuring device according to claim 1, which is characterized in that the measuring mechanism (A) is small by piezoelectricity
Ball (28), PVDF piezoelectric membrane (29), groove III (30), support frame (31) composition, wherein support frame (31) upper surface is adhered to
PVDF piezoelectric membrane (29), support frame (31) lower surface are equipped with the groove III (30) of fixed piezoelectric pellet (28) position；PVDF pressure
Conductive film (29) is attached in the shape of a spiral on support frame (31).
3. soil resistance measuring device according to claim 1, which is characterized in that the subsidiary body (B) is led by fixation
Track slot component I (E1), fixed guide rail bowl assembly II (E2), fixed guide rail bowl assembly III (E3), protective shell I (1), protective shell II
(2), spring (3), housing I (4), shell (5), handle are to (6), housing II (7), groove I (10), groove II (23), bionical convex
Structure (27), groove IV (33) composition are played, wherein fixed guide rail bowl assembly I (E1), fixed guide rail bowl assembly II (E2), fixation are led
Track slot component III (E3) structure is identical, is made of guide-track groove (24), rotating shaft (25), hole (32), guide-track groove (24) position
It is internal in housing II (7), rotating shaft (25) and guide-track groove (24) it is hinged, hole (32) be located at guide-track groove (24) top；Fixed guide rail
Bowl assembly I (E1), fixed guide rail bowl assembly II (E2), fixed guide rail bowl assembly III (E3) are in around the central axis of housing II (7)
120 ° of distributions；Spring (3) upper end and housing I (4) lower end are affixed, and spring (3) lower end and protective shell I (1) upper end are affixed；Protective shell
II (2) upper end inner ring and housing I (4) lower end outer ring are affixed, and protective shell II (2) lower part inner ring and protective shell I (1) top outer ring are sliding
Dynamic connection；Housing I (4) is fixed in shell (5) lower end through bolt group II (26), and housing II (7) is fixed in shell through bolt group I (15)
Body (5) upper end；Handle is fixed in two handles of (6) at left and right sides of the nearly upper end of shell (5)；Groove IV (33) is shell
(5) internal groove.
4. soil resistance measuring device according to claim 3, which is characterized in that protective shell I (1) lower part and ground
Contact, surface are the bionical bulge-structure (27) of point, and the longitudinal section of single shape is segmented equation are as follows:
Y=x2, -3mm≤x≤3mm.
5. soil resistance measuring device according to claim 1, which is characterized in that the transmission mechanism (C) is by gear teeth
Bar assembly I (C1), rack and pinion assembly II (C2), rack and pinion assembly III (C3), inner cylinder (12), probe (13), gasket (14)
It forms, wherein rack and pinion assembly I (C1), rack and pinion assembly II (C2) and the complete phase of rack and pinion assembly III (C3) structure
Together, by gear I (8), rack gear I (9), rack gear II (11), gear II (22), middle gear I (8) is welded as with gear II (22)
One is fixed on guide-track groove (24) inside and is rotated by rotating shaft (25), and gear I (8) and rack gear I (9) are intermeshed, rack gear
II (11) and gear II (22) are intermeshed, and rack gear I (9) bottom and gasket (14) are affixed；Rack gear I (9) has flank and gear I
(8) engage, rack gear II (11) has flank to engage with gear II (22), rack gear I (9) and rack gear II (11) without flank and guide-track groove
(24) it contacts；Rack and pinion assembly I (C1), rack and pinion assembly II (C2) and rack and pinion assembly III (C3) are in 120 degree of intervals
It is placed in inner cylinder (12) upper end, wherein rack and pinion assembly I (C1), rack and pinion assembly II (C2) and rack and pinion assembly III (C3)
Three's bottom side is affixed by rack gear I (9) and gasket (14), and the three bottom other side then passes through rack gear II (11) and inner cylinder
(12) affixed；Probe (13) top is threadedly coupled with inner cylinder (12) lower end center.
6. soil resistance measuring device according to claim 1, which is characterized in that the signal processing and indication mechanism
(D) by piezoelectric transducer (16), signal processing circuit (17), A/D conversion circuit (18), microcontroller (19), display module
(20), power module (21), locating module (34), memory module (35) composition, wherein signal processing circuit (17), A/D are converted
Circuit (18), microcontroller (19), display module (20), locating module (34), memory module (35) and power module (21) pass through
Conducting wire connection.
7. soil resistance measuring device as described in claim 5, which is characterized in that the cross section of the inner cylinder (12) is by four
Section same curve composition regular curve, by the section, wherein one section of curve ab is placed in XOY coordinate system, with inner cylinder (12) with
The axis of longitudinal section intersection is X-axis, and with shell (5) the outer circle center of circle for O point, Y-axis issues from O point and perpendicular to X-axis, and inner cylinder (12) is horizontal
Section wherein curvilinear equation of one section of curve ab in XOY coordinate system are as follows:
Y=0.28602+2.44956x-0.0673x2
Wherein: x belongs to [0,37], unit mm.
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