CN208968726U - A kind of cursor type hydraulics momentum experiment graduated scale - Google Patents
A kind of cursor type hydraulics momentum experiment graduated scale Download PDFInfo
- Publication number
- CN208968726U CN208968726U CN201821920841.4U CN201821920841U CN208968726U CN 208968726 U CN208968726 U CN 208968726U CN 201821920841 U CN201821920841 U CN 201821920841U CN 208968726 U CN208968726 U CN 208968726U
- Authority
- CN
- China
- Prior art keywords
- graduated scale
- momentum
- scale
- vernier
- cursor type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a kind of cursor type hydraulics momentum to test graduated scale, including leverage and vernier.Mounting screw, long-armed upper installation eyelid retractor and high range line is carved on leverage galianconism；There is knob at the top of vernier, bottom installation is linked up with and is carved with down scale line.The utility model will be converted into the measurement to torque to the measurement of power, changes counterweight moment about point of support using the movement of vernier on the scale, can accurately read the size of distance after balance graduated scale by the scale on vernier；And balancing counterweight used in graduated scale can be suspended on the hook of vernier bottom, easy for assemble or unload simple, improve the efficiency and precision of experiment.
Description
Technical field
The utility model relates to technology fields of measurement, and concretely relating to one kind being capable of precise measurement hydraulics momentum reality
Test the experiment graduated scale of middle counterweight torque.
Background technique
Momentum theorem is the most important theories in hydraulics, it reflect during fluid motion active force and momentum change it
Between relationship.For the profession of water conservancy class, the experiment of the equation of momentum is even more important in the teaching of undergraduate course, it can allow
The raw meaning for intuitively experiencing the equation of momentum, and deepen understanding of the student to the equation of momentum in practice.
Currently, momentum experiment is all completed by mode of jet.Water flow impinges upon lever after projecting from bottom of gullet aperture
On the graduated scale of shape, hang counterweight on ruler, after balancing graduated scale, by calculate find out jet stream amount of force and with theory
Value compares.But existing graduated scale structure is too simple, and measurement accuracy is low, and adjustment counterweight position is inconvenient.Therefore, this is practical new
Type proposes a kind of cursor type hydraulics momentum experiment graduated scale for this, can effectively improve measurement accuracy in experiment.
Utility model content
The utility model provides a kind of cursor type hydraulics momentum experiment graduated scale, utilizes the shifting of vernier on the scale
It moves to change counterweight moment about point of support, balances graduated scale, by the scale on vernier, the accurate size for reading distance；And
Counterweight used in balance graduated scale can be suspended on the hook of vernier bottom, easy for assemble or unload simple, improve the effect of experiment
Rate and precision.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions:
A kind of cursor type hydraulics momentum experiment graduated scale, graduated scale generally Z-shaped balance plate, screw are installed on Z-shaped
On the galianconism of type balance plate, eyelid retractor is installed on the side of the long-armed close turn end of Z-shaped balance plate；High range line is engraved on Z
Font balance plate it is long-armed on；
C font sliding block be slidably arranged in Z-shaped balance plate it is long-armed on, knob is installed on C font sliding block top；Down scale
Line is engraved on C font sliding block lower part, and hook is installed on C font slider bottom.
Knob is installed on C font sliding block top, sliding by can change knob insertion C font clockwise or counterclockwise
The distance of block.In use, vernier can be fixed on leverage by rotation knob.
Further, the eyelid retractor is the rectangular configuration for having triangle open mouth, be installed on Z-shaped device it is long-armed on,
Close to the side of turn end, can be made of metal.
Further, the graduation mark spacing of the high range line is 1mm.
Further, the graduation mark spacing of the down scale line is 0.98mm.
Further, the hook is installed on C font slider bottom, and installation point is the midpoint of C font sliding block, bottom it is curved
Qu Weisi points of three-arc, the center of circle and installation point are located on same vertical line.Counterweight can be hung when use on it.
Compared with prior art, the utility model has the beneficial effects that
The measurement of the power generated to jet stream is converted the measurement to torque by the utility model.Vernier can be on the scale
It is free to slide or fixed, and pin-point reading, it can achieve the effect that improve experimental precision；Hook below vernier can make
Installation or the disassembly for obtaining counterweight are more convenient, quick；Graduated scale experimentally has very big flexibility and very high experiment essence
Degree.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of cursor type hydraulics momentum experiment graduated scale.
In figure, 1 is leverage, and 2 be vernier, and 3 be Z-shaped balance plate, and 4 be screw, and 5 be eyelid retractor, and 6 be high range
Line, 7 be C font sliding block, and 8 be knob, and 9 be hook, and 10 be down scale line.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of cursor type hydraulics momentum tests graduated scale, generally a leverage 1, leverage
On be provided with vernier 2.Leverage 1 includes Z-shaped balance plate 3, screw 4, eyelid retractor 5 and high range line 6；Vernier 2 includes C word
Type sliding block 7, knob 8, hook 9 and down scale line 10.
A kind of cursor type hydraulics momentum experiment graduated scale generally Z-shaped balance plate 3, screw 4 are installed on Z-shaped balance
On the galianconism of plate 3, when use, can install Reflector Panel on screw, so that the centroid of panel and jet hole are located at same height
Degree；Eyelid retractor 5 is the rectangular configuration for having triangle open mouth, is installed on the side of the long-armed close turn end of Z-shaped balance plate 3,
It can be made of metal；High range line 6 be engraved on Z-shaped balance plate 3 it is long-armed on, the spacing of graduation mark is 1mm；
C font sliding block 7 be slidably arranged in Z-shaped balance plate 3 it is long-armed on, knob 8 is installed on 7 top of C font sliding block, lead to
Cross the distance that can change knob insertion C font sliding block clockwise or counterclockwise；Down scale line 10 is located under C font sliding block
Portion, graduation mark spacing 0.98mm；Hook 9 is installed on 7 bottom of C font sliding block, and installation point is the midpoint of C font sliding block, bottom
It is bent into four/three-arc, the center of circle and installation point are located on same vertical line.
Manufacturer is after manufacture, it is thus necessary to determine that some basic parameters of momentum experiment graduated scale, comprising: screw 4
Vertical range L of the centroid to eyelid retractor 51, the length L of vernier 22With quality m1。
The application method of above-mentioned momentum experiment ruler, comprising the following steps:
Before use, first installing reflecting plate at any angle on screw 4, momentum experiment graduated scale is put by eyelid retractor 5
It is placed on the edge of experimental trough.
Left and right adjusting vernier 2 screws knob 8 until momentum experiment graduated scale balance, rear to read distance a mm.It reads
Several methods are as follows: vernier is 50 graduated scales, reads position of the zero graduation line of down scale line 10 on vernier 2 on high range line 6,
It is accurate to millimeter position；The graduation mark digit being overlapped on down scale line 10 with a certain graduation mark on high range line 6 is read again, because greatly
It is divided into 1mm between graduation mark 6, is divided into 0.98mm between down scale line 10, so 10 first, down scale line and 6 weight of high range line
It is 0.02mm when conjunction, is 0.04mm when second is overlapped, therefore analogize, reading is accurate to 0.01mm.
Aperture jet stream is allowed to hit the centroid of reflecting plate；Sprung mass is m on hook 92Counterweight；Knob 8 is unscrewed, again
The position of moving cursor, until momentum experiment graduated scale balance；After screwing knob 8, it is b that reading, which reads distance at this time,
mm.The method of reading is identical as previous step.
Due to the uniform quality of vernier 2, and the installation point of the hitch point of counterweight and hook 9 is all located at 2 midpoint of vernier, so
It is considered that the position of resultant force is located at the midpoint of vernier.
It illustrates how to handle resulting data below.
Torque caused by balance plate can indicate are as follows:
Balance resultant couple after generating jet stream can indicate are as follows:
Active force of the jet stream to plateIt can be by being calculated:
Active force of the jet stream to plateIt can also be obtained by theoretical calculation, in formulaIt is the density of water,It is flow,It is flow velocity,It is the angle of reflection:
More above two method calculates resultingIt can be concluded that the relative error of experiment.
Above are merely preferred embodiments of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, each facility locations, size can also be adjusted, this
A little adjustment also should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of cursor type hydraulics momentum tests graduated scale, which is characterized in that graduated scale generally Z-shaped balance plate, screw
It is installed on the galianconism of Z-shaped balance plate, eyelid retractor is installed on the side of the long-armed close turn end of Z-shaped balance plate；It is big to carve
Degree line be engraved on Z-shaped balance plate it is long-armed on；
C font sliding block be slidably arranged in Z-shaped balance plate it is long-armed on, knob is installed on C font sliding block top；Down scale line is carved
In C font sliding block lower part, hook is installed on C font slider bottom.
2. a kind of cursor type hydraulics momentum tests graduated scale as described in claim 1, which is characterized in that the eyelid retractor is tool
There is the rectangular configuration of a triangle open mouth.
3. a kind of cursor type hydraulics momentum tests graduated scale as described in claim 1, which is characterized in that the high range line
Graduation mark spacing is 1mm.
4. a kind of cursor type hydraulics momentum tests graduated scale as claimed in claim 3, which is characterized in that the down scale line
Graduation mark spacing is 0.98mm.
5. a kind of cursor type hydraulics momentum tests graduated scale as described in claim 1, which is characterized in that the installation of the hook
Point is located at the midpoint of the C font slider bottom, and hook tail portion is four/three-arc, the center of circle of circular arc and the installation point of hook
On same vertical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821920841.4U CN208968726U (en) | 2018-11-21 | 2018-11-21 | A kind of cursor type hydraulics momentum experiment graduated scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821920841.4U CN208968726U (en) | 2018-11-21 | 2018-11-21 | A kind of cursor type hydraulics momentum experiment graduated scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208968726U true CN208968726U (en) | 2019-06-11 |
Family
ID=66765674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821920841.4U Expired - Fee Related CN208968726U (en) | 2018-11-21 | 2018-11-21 | A kind of cursor type hydraulics momentum experiment graduated scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208968726U (en) |
-
2018
- 2018-11-21 CN CN201821920841.4U patent/CN208968726U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201688812U (en) | Tooling for measuring depth of groove in hole | |
| CN104569480A (en) | Liquid impact force and flow velocity measuring instrument and measuring method thereof | |
| CN208968726U (en) | A kind of cursor type hydraulics momentum experiment graduated scale | |
| CN206804273U (en) | Torque converter blades boundary layer flow measurement apparatus | |
| CN203588527U (en) | Sensing momentum theorem experimental apparatus | |
| CN206563754U (en) | A kind of rotary propeller type current meter and acoustic Doppler velocimetry mobile device | |
| CN111739389A (en) | Multifunctional simple pendulum experimental device | |
| CN209055041U (en) | A kind of balance and linear measure longimetry platform of meadow hockey lever | |
| CN206179340U (en) | Three string pendulums with pivot angle indicating device | |
| CN105783667B (en) | A kind of clearance measurement scale | |
| CN207407829U (en) | A kind of standard clearance device | |
| CN210625546U (en) | Elbow radian detection tool | |
| CN201188022Y (en) | Test equipment for accurate floating ball type liquid-level meter | |
| CN202109909U (en) | Total station measuring target seat | |
| CN205228314U (en) | A percentage table for improving measurement accuracy | |
| CN102760368B (en) | Adjusting device of simple pendulum balance position and initial movement position | |
| CN207663632U (en) | A kind of Moment of Inertia Using Three-line Pendulum Method instrument | |
| CN206531550U (en) | Ultrasonic open channel flowmeter level error on-site detecting device | |
| CN200950043Y (en) | slide measure | |
| CN209069560U (en) | Lens reflecting rate measures jig | |
| CN207908438U (en) | A kind of concrete ultrasonic flight-time calibrating installation | |
| CN203551020U (en) | IC (Integrated Circuit) card single-jet wet-type water meter | |
| CN208334193U (en) | A kind of measuring device for liquid refractive index | |
| CN208653366U (en) | A kind of pavement strip thickness measuring instrument | |
| CN203811475U (en) | Optical lever used in Young modulus measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190611 Termination date: 20191121 |