CN201096708Y - An easy-to-use Jolly balance - Google Patents
An easy-to-use Jolly balance Download PDFInfo
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- CN201096708Y CN201096708Y CNU2007200588095U CN200720058809U CN201096708Y CN 201096708 Y CN201096708 Y CN 201096708Y CN U2007200588095 U CNU2007200588095 U CN U2007200588095U CN 200720058809 U CN200720058809 U CN 200720058809U CN 201096708 Y CN201096708 Y CN 201096708Y
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- tank
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a jolly balance for measuring rigidity factor K and circle K of spring oscillator and also measuring liquid surface tension coefficient by abruption method, which comprises a bracket 1, a vertical post 2 arranged fixedly on the bracket 1, a measuring vernier caliper 3 that slides along the vertical post 2, and a measuring spring 7 with one end arranged fixedly on the measuring vernier caliper 3, wherein the measuring vernier caliper 3 is connected with a connection block 5 that is sleeved on the vertical post 2 and can slide along the vertical post 2, moreover the connection block 5 is arranged fixedly with a nut 6 that is combined with a screw rod 4 to form a spiral driving pair, the axial line of the screw rod 4 is parallel with that of the vertical post 2, moreover a driving mechanism A is arranged on the screw rod 4 for rotary movement. The utility model has the advantages of high measurement precision, easy and convenient adjustment, good stability, reliable and simple driving mechanism, convenient use and is jelly balance with reasonable design and nice appearance.
Description
Technical field:
The utility model is a kind ofly to be used for measuring spring oscillator coefficient of stiffiness K and period T and to measure the liquid surface tension coefficient Joly balance with the method that pulls, and belongs to the renovation technique of Joly balance.
Background technology:
Existing Joly balance is used for measuring spring oscillator coefficient of stiffiness K and period T and measures liquid surface tension coefficient with pulling method, traditional Joly balance is a kind of of spring balance, its major part is a column outer sleeve and the interior cover that millimeter scale is arranged, be fixed with a vernier in the upper end of outer sleeve, adopt the cursor principle reading.Precision is that the common spring balance of 0.1mm is that the upper end is fixed, then elongation downwards after the loading of lower end; Joly balance then in contrast, it is certain that its spring lower end position keeps, and after the loading, falls knob and make that cover rises in it by increasing, upwards extension spring is determined stretch value simultaneously.The shortcoming that tradition Joly balance instrument exists is: 1) main scale measuring accuracy 0.1mm is improper; Because it is just higher that traditional Joly balance instrument height 1.2m itself is placed on the laboratory table, when the mobile jib chi rises to certain position, accurate reading very, and the main scale precision is 0.1mm, Δ L error is just bigger when particularly measuring liquid surface tension coefficient.2) the Joly balance gearing is improper; Measuring spring oscillator coefficient of stiffiness K and period T, because counterweight weight constantly increases, regulating height adjustment knob rises by rope or steel wire drive main scale, rope is easily broken, steel wire easily skids, and when counterweight was increased to constant weight, main scale can not be again toward rising, Δ X is measured in influence, and this phenomenon is often seen in the measuring spring oscillator coefficient of stiffiness and cycle experiment.3) adjusting knob reduction liquid surface is improper.The beaker platform that adjusting knob will be equipped with liquid slowly reduces, and another hand adjustment joint knob main scale rises, and metal frame and liquid level pull moment during the both hands mismate, cause measurement Δ L error bigger.4) be improper with stopwatch writing time.Majority and unskilled use stopwatch or electronic stopclock, human body reflection time speed difference, the start the watch button also has the speed measuring error bigger, needs to measure 20-30 cycle sometimes just can obtain comparatively accurate data period meter.In sum, traditional Joly balance determines that in measuring spring stretch value Δ X, Δ L value error ratio are bigger.Also can increase in the error of calculating spring coefficient of stiffiness K, period T and liquid surface tension coefficient α.
The utility model content:
The purpose of this utility model is to consider the problems referred to above and a kind of measuring accuracy height is provided, regulate easy and convenient, good stability, gear train is simple and reliable, Joly balance easy to use.The utility model is reasonable in design, and good looking appearance.
The technical solution of the utility model is: the utility model includes support, be fixed on the column on the support, a measurement vernier scale and an end that slides along column is fixed on the measuring spring of measuring on the vernier scale, on wherein measuring vernier scale and being sleeved on column, can be connected along the contiguous block that column slides, and contiguous block also is fixed with the nut of forming the worm drive pair with screw rod, the axis of screw rod and the parallel axes of column, and the driving mechanism that driving rotates is housed on the screw rod.
The driving mechanism that above-mentioned drive screw rotates includes and shakes handle and gear train thereof, wherein shakes handle and is connected with the driving link of gear train, and screw rod is connected with the driven member of gear train.
Above-mentioned gear train is a belt gear, or is gear drive.
The lower end of above-mentioned measuring spring is provided with the tank continuous-flow type measuring mechanism of measuring surface tension of liquid, it includes tank and is contained in the water swivel of tank sidewall, mirror is equipped with in the lower end of measuring spring, and the liquid level of tank is equipped with the measurement piece, and mirror is connected by web member with the measurement piece.
Above-mentioned support is packed on the leg.
The utility model compared with prior art has following advantage:
1) Joly balance overall height of the present utility model reduces to 0.8m.
2) main scale vernier measuring accuracy changes 0.02mm into.
3) the utility model Joly balance rotates screw rod by shaking handle, by the worm drive pair measurement vernier is slided up and down, and it is easy to adjust, good stability.
4) the new tank continuous-flow type of employing is measured surface tension of liquid, during measurement sluice is opened, and allows liquid level slowly reduce, and at this moment only need slide up and down with a hand adjustment joint main scale vernier to get final product.
The utility model is that a kind of design is ingenious, function admirable, convenient and practical Joly balance easy to use.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
Embodiment:
Structural representation of the present utility model as shown in Figure 1, the measurement vernier scale 3 and the end that include support 1, be fixed on column 2 on the support 1, slide along column 2 are fixed on the measuring spring of measuring on the vernier scale 37, on wherein measuring vernier scale 3 and being sleeved on column 2, can be connected along the contiguous block 5 that column 2 slides, and contiguous block 5 also is fixed with the nut 6 of forming the worm drive pair with screw rod 4, the parallel axes of the axis of screw rod 4 and column 2, and the driving mechanism A that driving rotates is housed on the screw rod 4.
In the present embodiment, the driving mechanism A that above-mentioned drive screw 4 rotates includes handle 13 and gear train thereof, and wherein handle 13 is connected with the driving link 12 of gear train, and screw rod 4 is connected with the driven member 14 of gear train.
Above-mentioned gear train is a belt gear, or is gear drive.In the present embodiment, gear train is a belt gear, the lower end of above-mentioned measuring spring 7 is provided with the tank continuous-flow type measuring mechanism of measuring surface tension of liquid, it includes tank 9 and is contained in the water swivel 10 of tank 9 sidewalls, mirror 8 is equipped with in the lower end of measuring spring 7, the liquid level of tank 9 is equipped with measures piece 16, and mirror 8 is connected by web member 15 with measurement piece 16.
For ease of installing and regulating, above-mentioned support 1 is packed on the leg 11, and set screw 17 is housed on the leg 11.
During the utility model work, shake handle 13, make driving link 12 rotations of gear train, driven member 14 drives screw rod 4 and rotates, is connected with screw rod 4 by nut 6 because of measuring vernier scale 3, so during screw rod 4 rotations, measurement vernier scale 3 just slides up and down, thereby upwards extension spring 7 is determined stretch value, by hall sensing cycle calculagraph measuring spring oscillator periodic T.
In addition, when needing to measure surface tension of liquid, water swivel 10 is opened, allowed the liquid level of tank 9 slowly reduce, at this moment survey crew only need slide up and down measurement vernier scale 3 and get final product with a hand fixed handle 13.
Claims (5)
1, a kind of Joly balance easy to use, include support (1), be fixed on the column (2) on the support (1), the measurement vernier scale (3) and the end that slide along column (2) are fixed on the measuring spring of measuring on the vernier scale (3) (7), it is characterized in that measuring vernier scale (3) and be sleeved on the column (2), can connect along the contiguous block (5) that column (2) slides, and contiguous block (5) also is fixed with the nut (6) of forming the worm drive pair with screw rod (4), the parallel axes of the axis of screw rod (4) and column (2), and the driving mechanism (A) that driving rotates is housed on the screw rod (4).
2, Joly balance easy to use according to claim 1, it is characterized in that driving mechanism (A) that above-mentioned drive screw (4) rotates includes shakes handle (13) and gear train thereof, wherein shake handle (13) and be connected with the driving link (12) of gear train, screw rod (4) is connected with the driven member (14) of gear train.
3, Joly balance easy to use according to claim 1 is characterized in that above-mentioned gear train is a belt gear, or is gear drive.
4, Joly balance easy to use according to claim 1, the lower end that it is characterized in that above-mentioned measuring spring (7) is provided with the tank continuous-flow type measuring mechanism of measuring surface tension of liquid, it includes tank (9) and is contained in the water swivel (10) of tank (9) sidewall, mirror (8) is equipped with in the lower end of measuring spring (7), the liquid level of tank (9) is equipped with measures piece (16), and mirror (8) is connected by web member (15) with measurement piece (16).
5, Joly balance easy to use according to claim 1 is characterized in that above-mentioned support (1) is packed on the leg (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200588095U CN201096708Y (en) | 2007-10-26 | 2007-10-26 | An easy-to-use Jolly balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200588095U CN201096708Y (en) | 2007-10-26 | 2007-10-26 | An easy-to-use Jolly balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096708Y true CN201096708Y (en) | 2008-08-06 |
Family
ID=39923761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200588095U Expired - Fee Related CN201096708Y (en) | 2007-10-26 | 2007-10-26 | An easy-to-use Jolly balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096708Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063826A (en) * | 2010-10-10 | 2011-05-18 | 桂林理工大学 | Jolly balance and application thereof |
| CN102672252A (en) * | 2011-09-15 | 2012-09-19 | 庞勇 | Step-shaped chip separation disk milling cutter |
| CN107228811A (en) * | 2017-05-23 | 2017-10-03 | 福建师范大学 | The measuring method of liquid surface tension coefficient based on real-time measurement and data fitting |
| CN109187282A (en) * | 2018-09-21 | 2019-01-11 | 湖州师范学院 | A kind of novel Joly balance |
| CN109238925A (en) * | 2018-09-21 | 2019-01-18 | 湖州师范学院 | A kind of improved Jolly balance |
| CN111251216A (en) * | 2020-03-10 | 2020-06-09 | 甘肃农业大学 | Auxiliary instrument clamp for measuring surface tension coefficient |
-
2007
- 2007-10-26 CN CNU2007200588095U patent/CN201096708Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063826A (en) * | 2010-10-10 | 2011-05-18 | 桂林理工大学 | Jolly balance and application thereof |
| CN102672252A (en) * | 2011-09-15 | 2012-09-19 | 庞勇 | Step-shaped chip separation disk milling cutter |
| CN107228811A (en) * | 2017-05-23 | 2017-10-03 | 福建师范大学 | The measuring method of liquid surface tension coefficient based on real-time measurement and data fitting |
| CN109187282A (en) * | 2018-09-21 | 2019-01-11 | 湖州师范学院 | A kind of novel Joly balance |
| CN109238925A (en) * | 2018-09-21 | 2019-01-18 | 湖州师范学院 | A kind of improved Jolly balance |
| CN111251216A (en) * | 2020-03-10 | 2020-06-09 | 甘肃农业大学 | Auxiliary instrument clamp for measuring surface tension coefficient |
| CN111251216B (en) * | 2020-03-10 | 2022-06-24 | 甘肃农业大学 | Auxiliary instrument clamp for measuring surface tension coefficient |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20091126 |