CN202649069U - High-precision lever type weighing lysimeter system based on spring balance - Google Patents
High-precision lever type weighing lysimeter system based on spring balance Download PDFInfo
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- CN202649069U CN202649069U CN 201220147285 CN201220147285U CN202649069U CN 202649069 U CN202649069 U CN 202649069U CN 201220147285 CN201220147285 CN 201220147285 CN 201220147285 U CN201220147285 U CN 201220147285U CN 202649069 U CN202649069 U CN 202649069U
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Abstract
The utility model discloses a high-precision lever type weighing lysimeter system based on spring balance. The weighing lysimeter system comprises a first support point, a second support point is arranged above a part inclined to one side of the first support point, a soil box is arranged above a part inclined to the other side of the second support point, an elastic support piece is arranged at the bottom of the soil box, a first lever is installed on the first support point, a second lever is installed on the second support point, the end part of a moment arm of the first lever is rigidly connected with the bottom of the soil box, a first counter weight block is installed on the moment arm of one side of the first lever, the end part of the first lever is connected with the second lever by a connecting rod, a second counter weight block is installed on the moment arm connected with the connecting rod on the second lever, a moment arm on the other side of the second lever is connected with a weighing sensor which is connected with a data processing device used for obtaining the water content changing quantity of a soil body to be tested. Compared with the prior art, the high-precision lever type weighing lysimeter system can realize the high-precision measurement of the water content changing quantity of the soil body.
Description
Technical field
The utility model belongs to water conservancy scientific research apparatus technical field, is specifically related to a kind of high precision lever formula based on spring balancing and weighs and steam the system of oozing.
Background technology
Existing Weighing Lysimeter can be divided into fluid pressure type, mechanical type, electronic type etc., it all requires the volume and weight of the measured soil body large, then the moisture general assembly (TW) is large in the soil body, and since in the mensuration process in the soil body to be measured the actual change amount of moisture smaller, utilize the determinator of wide region to remove the variation characteristic of experiencing less, be difficult to obtain the mensuration of degree of precision, this also is the basic reason that existing Weighing Lysimeter is difficult to obtain the measuring accuracy of needs.
The utility model content
The purpose of this utility model provides a kind of high precision lever formula based on spring balancing and weighs to steam and ooze system, compared with prior art, can realize that the soil body moisture changed measurement of degree of precision is fixed.
The technical scheme that the utility model adopts is, a kind of high precision lever formula based on spring balancing is weighed and is steamed the system of oozing, it is characterized in that, comprise the first fulcrum, the one skew back top of the first fulcrum is provided with the second fulcrum, the opposite side oblique upper of the first fulcrum is provided be used to the native case of placing the soil body to be measured, the bottom of soil case is provided with the elastic supporting member for supporting optical member of vertical direction, the first lever is installed on the first fulcrum, the second lever is installed on the second fulcrum, the end of the first lever one arm of force and the bottom of native case are rigidly connected, on the first lever one side force arm the first balancing weight is installed and the end is connected with the second lever by connecting link, be connected with on the second lever on the arm of force of connecting link the second balancing weight also is installed, be connected with LOAD CELLS on the opposite side arm of force of the second lever, be connected with on the LOAD CELLS be used to the data processing equipment that obtains soil body moisture variable quantity to be measured.
Connecting link is the vertical direction setting.
The second balancing weight and LOAD CELLS lay respectively at the end of two arm of forces of the second lever.
Elastic supporting member for supporting optical member comprises a plurality of support springs of even setting, and the bottom of each support spring all is fixed on the lower plate, and the top of each support spring all is fixed on the train wheel bridge, and native case is placed on the train wheel bridge and by this train wheel bridge and is connected with the first lever.
All be welded with vertical inner core on the fixed position of corresponding each support spring on the train wheel bridge, the inside that is positioned at each inner core on the train wheel bridge all has air hole, each support spring is arranged in the corresponding inner core, and the bottom of support spring is fixedly connected with the inwall of corresponding inner core, all be welded with on the fixed position of corresponding support spring vertically to urceolus on the lower plate, each urceolus is arranged on the outside of corresponding inner core, all is marked with lubricating fluid in each urceolus.
The both ends of connecting link all are equipped with blade, and the first lever all is equipped with the cutter holder that matches with described blade with the position that the second lever is connected with connecting link.
Data processing equipment comprises the data acquisition unit that is connected with LOAD CELLS, be connected with on the data acquisition unit for the signal conversion unit that simulating signal is transferred to digital signal, be connected with on the signal conversion unit be used to the signal processing unit that calculates soil body moisture variable quantity to be measured, be connected with display unit on the signal processing unit.
The utility model has changed the basic structure of existing Weighing Lysimeter, elastic supporting member for supporting optical member is set to consist of the elastic equilibrium load bearing system below native case, can fall the weight of solid in the soil body to be measured is in a basic balance, the lever transmission system that recycles the formations such as the first lever and the second lever transmits out with the subtle change of moisture weight in the soil body to be measured, adopt LOAD CELLS to measure the loads change of the second lever end output, by data processing equipment sensing data is processed at last, thereby measure the weight change amount of the soil body to be measured, namely crop is rising from the soil body to be measured, soil evaporation or rainfall, irrigate and wait the water yield of infiltrating.
The beneficial effects of the utility model are: features simple structure, and cost of manufacture is low, and the soil body moisture changed measurement of degree of precision of realizing easy to use is decided, and the data of measuring is carried out the real-time online express-analysis process and process; Can free setting sampling interval, accomplish the high speed, the accuracy that gather to have strengthened stability and reliability, greatly improved work efficiency.
Description of drawings
To be the utility model based on the high precision lever formula of spring balancing weigh to steam Fig. 1 oozes the structural representation of system;
Fig. 2 is the wiring layout of train wheel bridge in the utility model, support spring and lower plate;
Fig. 3 is the data processing equipment block diagram in the utility model;
Fig. 4 is the force analysis figure of the utility model the first lever and the second lever.
Wherein, 1. support spring, 2. the first lever, 3. the first fulcrum, 4. the first balancing weight, 5. connecting link, 6. urceolus, 7. inner core, 8. lubricating fluid, 9. the second lever, 10. the second balancing weight, 11. train wheel bridges, 12. lower plate, 13. air holes, 14. second fulcrums, 15. LOAD CELLS, 16. native casees, 17. data acquisition units, 18. signal conversion unit, 19. signal processing units, 20. display units.
Embodiment
As shown in Figure 1, the utility model is weighed based on the high precision lever formula of spring balancing and is steamed the system of oozing, the opposite side oblique upper that the skew back top that comprises the first fulcrum 3, the first fulcrums 3 is provided with the second fulcrum 14, the first fulcrums 3 is provided be used to the native case 16 of placing the soil body to be measured.The bottom of soil case 16 is provided with the elastic supporting member for supporting optical member of vertical direction.The first lever 2 is installed on the first fulcrum 3.The second lever 9 is installed on the second fulcrum 14.The end of the first lever 2 one arm of forces and the bottom of native case 16 are rigidly connected, and on the first lever 2 one side force arms the first balancing weight 4 are installed and the end is connected with the second lever 9 by connecting link 5, and connecting link 5 is the vertical direction setting.Be connected with on the second lever 9 and be connected with the end that LOAD CELLS 15, the second balancing weights 10 and LOAD CELLS 15 lay respectively at two arm of forces of the second lever 9 on the opposite side arm of force that the second balancing weight 10, the second levers 9 also are installed on the arm of force of connecting link 5.
As shown in Figure 2, elastic supporting member for supporting optical member comprises a plurality of support springs 1 of even setting.The bottom of each support spring 1 all is fixed on the lower plate 12, and the top of each support spring 1 all is fixed on the train wheel bridge 11, and native case 16 is placed on the train wheel bridge 11 and by this train wheel bridge 11 and is connected with the first lever 2.All be welded with vertical inner core 7 on the train wheel bridge 11 on the fixed position of corresponding support spring 1, the inside that is positioned at each inner core 7 on the train wheel bridge 11 all has air hole 13, each support spring 1 is arranged in the corresponding inner core 7, and the bottom of each support spring 1 is fixedly connected with the inwall of corresponding inner core 7, all be welded with vertically to urceolus 6 on the fixed position of corresponding each support spring 1 on the lower plate 12, each urceolus 6 is arranged on the outside of corresponding inner core 7, each urceolus 6 interior lubricating fluid 8 that all are marked with.Corresponding inner core 7 and urceolus 6 and lubricating fluid 8 can effectively reduce owing to concussion, temperature variation and air and support spring 1 electrochemical corrosion etc. reach good stable and damping effect to the impact of support spring 1 through moisture.
The both ends of connecting link 5 all are equipped with blade, and the first lever 2 all is equipped with the cutter holder that matches with described blade with the position that the second lever 9 is connected with connecting link 5.Because the volume and weight of the soil body to be measured is large generally speaking, and the moisture variable quantity of required measurement is very little, then require the utility model can bear large load, and measuring accuracy is high and susceptibility wants high, therefore the first lever 2 and the second lever 9 and connecting link 5 are all with blade, the form of cutter holder is accepted mutually the transmission of carrying out power, holder is that line contacts with cutter owing to blade, rather than traditional face contact, like this can be effectively contact point be remained on a substantially constant length range to the distance of fulcrum, thereby reduce the systematic error that the change in location because of stress point causes the lever transmission system.
As shown in Figure 3, be connected with data processing equipment on the LOAD CELLS 15.Data processing equipment comprises the data acquisition unit 17 that is connected with LOAD CELLS 15, be connected with on the data acquisition unit 17 for the signal conversion unit 18 that simulating signal is transferred to digital signal, be connected with on the signal conversion unit 18 be used to the signal processing unit 19 that calculates soil body moisture variable quantity to be measured, be connected with display unit 20 on the signal processing unit 19.
In the utility model, support spring 1, urceolus 6, inner core 7, train wheel bridge 11 and lower plate 12 common formation elastic equilibrium load bearing systems, the first lever 2, the first fulcrum 3, the first balancing weight 4, connecting link 5, the second lever 9, the second fulcrum 14 and the second balancing weight 10 consist of the lever transmission systems.Generally speaking, the volume and weight of soil sample to be measured is large, the change of sending out or infiltrating in order to measure the every Tentium of soil sample to be measured at first utilizes the elastic equilibrium load bearing system to fall the weight of solid in the soil body is in a basic balance, stays less weight by the first lever 2 balances; The anchorage force that the first lever 2 gives the soil body to be measured is provided by the first balancing weight 4, and the first lever 2 is connected with connecting link 5, and when soil body weight change to be measured, the weight of this variation is then by connecting link 5 balances; In the time of on power being passed to the second lever 9, the second balancing weight 10 presets to initial stressed of 15 1 of LOAD CELLS, and this second lever 9 is connected with connecting link 5, when power suffered on the connecting link 5 changes, then the power of this variation will pass to LOAD CELLS 15, and LOAD CELLS 15 is converted to electric weight with original mechanical quantity; The simulating signal of exporting according to weighing and sensing 15 by data processing equipment at last obtains soil body moisture variable quantity to be measured.
The initialization of the utility model duty: the output valve that LOAD CELLS 15 produces because of two balancing weights is demarcated and is the benchmark zero point of stressed size.
As shown in Figure 4, measuring principle of the present utility model is observed the stress balance principle:
System sets at first:
Soil body dynamic balance to be measured: P=nF+ ε P,
Spring pedestal connects lever stress: ε P * X=G * Y,
Connecting sensor lever stress: G` * Y`=R * Z`,
When the soil body to be measured is risen outbreak usefulness or extraneous moisturizing, produce Δ P, at this moment,
Soil sample variable quantity dynamic balance: Δ P=Δ ε P,
Spring pedestal connects lever stress to be changed: Δ ε P * X=T * Z,
The connecting sensor lever stress changes: T` * X`=Δ R * Z`,
Wherein, P is the former weight of the soil body to be measured; F is the anchorage force of each support spring 1; ε P is the anchorage force of the first lever 2;
G and G` are respectively the weight of the first balancing weight 4 and the second balancing weight 10; R is LOAD CELLS 15 initial stressed; N is the quantity of support spring 1;
Δ P is that the soil body to be measured oozes the weight change that produces because steam; Δ ε P changes size for the anchorage force that the first lever 5 provides;
T is the stressed size on the connecting link 5; T` and T be acting force and reacting force each other;
Δ R is the stressed variation size of LOAD CELLS 15; X is that power ε P is to the distance of fulcrum;
Y is that the power G that produces of the first balancing weight 4 is to pivot distance;
Y` is that the power G` of the second balancing weight 10 generations is to the distance of fulcrum;
Z` is that LOAD CELLS 15 stress points are to the distance of fulcrum;
X` is that the point that is connected with the first lever 2 of connecting link 5 is to the distance of fulcrum;
Z is that the point that is connected with the first lever 2 of connecting link 5 is to the distance of fulcrum;
Record Δ R, just can instead release Δ P, send out or variable quantity that extraneous moisturizing effects causes the weight of the soil body to be measured to change thereby release because rising, reach the effect of measuring steaming milliosmolarity size variation with this.
Claims (7)
1. the high precision lever formula based on spring balancing is weighed and is steamed the system of oozing, it is characterized in that, comprise the first fulcrum (3), the one skew back top of described the first fulcrum (3) is provided with the second fulcrum (14), the opposite side oblique upper of described the first fulcrum (3) is provided be used to the native case (16) of placing the soil body to be measured, the bottom of described native case (16) is provided with the elastic supporting member for supporting optical member of vertical direction, the first lever (2) is installed on described the first fulcrum (3), the second lever (9) is installed on described the second fulcrum (14), the end of described the first lever (2) one arm of forces and the bottom of native case (16) are rigidly connected, on described the first lever (2) one side force arms the first balancing weight (4) is installed and the end is connected with the second lever (9) by connecting link (5), be connected with on described the second lever (9) on the arm of force of connecting link (5) the second balancing weight (10) also is installed, be connected with LOAD CELLS (15) on the opposite side arm of force of described the second lever (9), be connected be used to the data processing equipment that obtains soil body moisture variable quantity to be measured on the described LOAD CELLS (15).
2. weigh to steam according to the high precision lever formula based on spring balancing claimed in claim 1 and ooze system, it is characterized in that, described connecting link (5) is the vertical direction setting.
3. weigh according to claim 1 or 2 described high precision lever formulas based on spring balancing and steam the system of oozing, it is characterized in that, described the second balancing weight (10) and LOAD CELLS (15) lay respectively at the end of two arm of forces of the second lever (9).
4. weigh according to claim 1 or 2 described high precision lever formulas based on spring balancing and steam the system of oozing, it is characterized in that, described elastic supporting member for supporting optical member comprises a plurality of support springs (1) of even setting, the bottom of described each support spring (1) all is fixed on the lower plate (12), the top of described each support spring (1) all is fixed on the train wheel bridge (11), and described native case (16) is placed on train wheel bridge (11) and upward and by this train wheel bridge (11) is connected with the first lever (2).
5. weigh according to the high precision lever formula based on spring balancing claimed in claim 4 and steam the system of oozing, it is characterized in that, all be welded with vertical inner core (7) on the fixed position of upper corresponding each support spring of described train wheel bridge (11) (1), the inside that is positioned at each inner core (7) on the described train wheel bridge (11) all has air hole (13), described each support spring (1) is arranged in the corresponding inner core (7), and the bottom of support spring (1) is fixedly connected with the inwall of corresponding inner core (7), all be welded with vertically to urceolus (6) on the fixed position of the upper corresponding support spring (1) of described lower plate (12), described each urceolus (6) is arranged on the outside of corresponding inner core (7), all is marked with lubricating fluid (8) in described each urceolus (6).
6. weigh according to claim 1 or 2 described high precision lever formulas based on spring balancing and steam the system of oozing, it is characterized in that, the both ends of described connecting link (5) all are equipped with blade, and described the first lever (2) all is equipped with the cutter holder that matches with described blade with the position that the second lever (9) is connected with connecting link (5).
7. weigh according to claim 1 or 2 described high precision lever formulas based on spring balancing and steam the system of oozing, it is characterized in that, described data processing equipment comprises the data acquisition unit (17) that is connected with LOAD CELLS (15), be connected with on the described data acquisition unit (17) for the signal conversion unit (18) that simulating signal is transferred to digital signal, be connected with on the described signal conversion unit (18) be used to the signal processing unit (19) that calculates soil body moisture variable quantity to be measured, be connected with display unit (20) on the described signal processing unit (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220147285 CN202649069U (en) | 2012-04-10 | 2012-04-10 | High-precision lever type weighing lysimeter system based on spring balance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220147285 CN202649069U (en) | 2012-04-10 | 2012-04-10 | High-precision lever type weighing lysimeter system based on spring balance |
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| CN 201220147285 Expired - Lifetime CN202649069U (en) | 2012-04-10 | 2012-04-10 | High-precision lever type weighing lysimeter system based on spring balance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680346A (en) * | 2012-04-10 | 2012-09-19 | 西安理工大学 | High-precision lever type weighing lysimeter based on spring balance |
| CN103630461A (en) * | 2013-12-19 | 2014-03-12 | 上海化工研究院 | Improved test device for testing oxidizing solid |
| CN104477444A (en) * | 2014-11-30 | 2015-04-01 | 李军安 | Weighing and metering device |
| CN105784534A (en) * | 2016-05-06 | 2016-07-20 | 武汉大学 | Underground track type weighing lysimeter |
| CN109186704A (en) * | 2018-10-11 | 2019-01-11 | 华北水利水电大学 | Evaporation capacity method for automatic measurement and device |
-
2012
- 2012-04-10 CN CN 201220147285 patent/CN202649069U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680346A (en) * | 2012-04-10 | 2012-09-19 | 西安理工大学 | High-precision lever type weighing lysimeter based on spring balance |
| CN103630461A (en) * | 2013-12-19 | 2014-03-12 | 上海化工研究院 | Improved test device for testing oxidizing solid |
| CN103630461B (en) * | 2013-12-19 | 2016-03-23 | 上海化工研究院 | A kind of test unit of modified test oxidising solid |
| CN104477444A (en) * | 2014-11-30 | 2015-04-01 | 李军安 | Weighing and metering device |
| CN105784534A (en) * | 2016-05-06 | 2016-07-20 | 武汉大学 | Underground track type weighing lysimeter |
| CN109186704A (en) * | 2018-10-11 | 2019-01-11 | 华北水利水电大学 | Evaporation capacity method for automatic measurement and device |
| CN109186704B (en) * | 2018-10-11 | 2024-04-12 | 华北水利水电大学 | Automatic measuring method and device for evaporation capacity |
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Granted publication date: 20130102 |
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| CX01 | Expiry of patent term |