CN108645391A - A kind of liquid level induction automatic leveling measuring instrument bracket and its application method - Google Patents
A kind of liquid level induction automatic leveling measuring instrument bracket and its application method Download PDFInfo
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- CN108645391A CN108645391A CN201810678076.8A CN201810678076A CN108645391A CN 108645391 A CN108645391 A CN 108645391A CN 201810678076 A CN201810678076 A CN 201810678076A CN 108645391 A CN108645391 A CN 108645391A
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- 239000007788 liquid Substances 0.000 title claims abstract description 68
- 230000006698 induction Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000011324 bead Substances 0.000 claims description 7
- 230000037237 body shape Effects 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 244000286663 Ficus elastica Species 0.000 claims description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 3
- 229920001195 polyisoprene Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000009931 harmful effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000747 cardiac effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
Abstract
The present invention discloses a kind of liquid level induction automatic leveling measuring instrument bracket and its application method, belongs to engineering measuring technology field.Need not telescopic adjustment be carried out to three supporting rods respectively before its use, only by pressing button energy three supporting rods of simple realization while being adjusted to operation height, instrument trays are made to keep coarse level state, and the liquid level sensing device in upper instrument trays can be with instrument trays in automatic sensing leveling, to achieve the purpose that fast automatic accurate leveling measuring instrument；Simultaneously by sealing the different liquid levels of U-shaped induction tube two, when liquid level is there are when difference in height, just will produce electric signal, and the occurrence of liquid level difference is not required, therefore after repeatedly using, harmful effect will not be generated to the horizontal adjustment precision of device；The equipment operation process is easy, saves the time and efforts of operating personnel, shortens the construction period, is simple to manufacture, is cost-effective.
Description
Technical field
The invention belongs to engineering measuring technology field, especially a kind of liquid level incudes automatic leveling measuring instrument bracket and its makes
Use method.
Background technology
Engineering survey is applied to entire work progress, and spirit level, theodolite, total powerstation etc. are most in engineering survey at present
The measuring instrument being often used.These measuring instruments are before use, it is generally necessary to be first mounted on A-frame, then respectively to three
A supporting rod carries out telescopic adjustment, with this make instrument trays it is rough be adjusted to level, then debug repeatedly under measuring instrument pedestal three
A pedestal foot screw, to make measuring instrument reach accurate Level tune.Traditional this artificial leveling method process is more numerous
It is trivial, it needs to consume Observation personnel excessive operating time and energy.
To improve the efficiency of measuring instrument leveling in an installation, currently, application No. is 201420489510.5 patents pair
It has carried out corresponding improvement, it discloses a kind of transit support of automatic adjustment level, incudes triangle using horizon sensor
The levelness of holder carrys out three supporting rods of adjusting triangle holder with the signal control relay and servo motor of horizon sensor
Height, to automatically adjust the levelness of A-frame.Its shortcoming：Although first, adjusting three supporting rods using motor
Height automatically adjust levelness, but the whole height of A-frame can not meet any position in certain vertical range
It is flexible, it makes troubles when being observed to survey crew；Second is that its horizon sensor control device is fixed on the inside of three supporting rods,
Prevent entire holder from freely closing up as traditional triangle holder, it is more demanding to ground flat degree at observation and be not easy to work
Journey carries when measuring；Third, three supporting rods of the patent not only make entirely to prop up when inclined direction is freely stretched by motor
Seat generates the displacement of vertical direction, while also generating corresponding horizontal displacement, is difficult to meet bearing when real standard is adjusted
Overall stability.Application No. is the patent of CN201010169552.7, a kind of self-level(l)ing device and method are disclosed, reality is passed through
When monitor the horizontal-shift situation of article carrying platform, and according to the gradient of article carrying platform, generate corresponding driving control signal, move
The adjustment article carrying platform of state is at horizontality.Its shortcoming：When the article carrying platform of the device, to the load of upper part
Weight form tool there are certain requirements, and the measuring instrument for engineering survey cannot be satisfied；Second is that four hydraulic regulation pumps are equivalent to four
A holder simultaneously supports a horizontal article carrying platform, is redundant structure, when four hydraulic regulation pumps can not be adjusted simultaneously,
Article carrying platform face can be made to be deformed, be unable to reach the purpose of leveling article carrying platform；Third, level detecting module is to pass through loading
Horizontal platform displacement degree is different, generates different electrical signals to adjust, to detection article carrying platform horizontal-shift degree, required precision phase
Work as height, after repeatedly using, harmful effect can be generated to the horizontal adjustment precision of device.
Invention content
Be to solve the prior art there are drawbacks described above, the present invention provide a kind of liquid level induction automatic leveling measuring instrument bracket and
Its application method need not carry out telescopic adjustment, only by pressing a button just to three supporting rods respectively before its use
Energy three supporting rods of simple realization are adjusted to operation height simultaneously, and instrument trays is made to keep coarse level state, and upper instrument
Liquid level sensing device on device pallet can be measured with instrument trays in automatic sensing leveling to reach fast automatic accurate leveling
The purpose of instrument；Simultaneously by sealing the different liquid levels of U-shaped induction tube two, when liquid level is there are when difference in height, just will produce
Electric signal, and the occurrence of liquid level difference is not required, therefore after repeatedly using, the level of device will not be adjusted
Whole precision generates harmful effect；The equipment operation process is easy, saves the time and efforts of operating personnel, shortens the construction period, and manufactures
Simply, cost-effective.
To achieve the above object, the present invention uses following technical proposals：
A kind of liquid level induction automatic leveling measuring instrument bracket, it includes upper instrument trays, lower instrument trays, upper support bar and lower branch
Strut, upper instrument trays are connected with lower instrument trays, and lower instrument trays are connect with upper support bar top, and upper support bar lower part is under
Supporting rod connects, and upper support bar and lower support bar provide support force, two sides point of upper instrument trays for entire holder jointly
It is not fixed with liquid level sensing device, for level balance buoyancy to be converted to electric signal；
The third side of upper instrument trays is fixed with power-supply controller of electric, for providing power supply for power plant；
The side of lower instrument trays is fixed with power plant, for providing power for entire holder；
Lower instrument trays include lower triangle pallet, and lower triangle pallet is internally provided with button ejector；
Button ejector includes spring, button and wire, spring and button connects, provides elastic force for device, button inner end connects
Three wire one end are connect, when button press ejector, three wires can be interlocked, reach three wires while internally
The purpose of contraction, the other end connect the ejection triple-angle upper end of upper support bar, launch the eject button of triple-angle and upper support bar
Work compound may be implemented when pressing in the button of button ejector, and wire starts deflated state occur, drive ejection triangle
Device moves up, and ejection triple-angle is made to be detached from two eject buttons of lower end, and two eject buttons start under spring action
Inside is sprung into, when the button of release button ejector, action step is on the contrary, finally realize that two eject buttons are acted in spring
Two sides are popped up under power.
The eject button of upper support bar matches use with the preformed hole of lower support bar.
Further, liquid level sensing device includes sealing U-shaped induction tube, displacement transmission lever and alternate circuit plate；
It seals and reserves a semiliquid in U-shaped induction tube, be used for sensation level face；
It seals U-shaped induction tube both ends liquid surface and is provided with buoy, liquid level where buoy follows respectively freely up and down floats；
Buoy top is fixed with displacement transmission lever, is connected by electric wire between displacement transmission lever；
It seals U-shaped induction tube and is arranged above alternate circuit plate, two alternate circuit plates are in the vertical distribution in left and right, each alternately
Circuit board is divided to two electrical contact plates up and down, the electrical contact plate of left alternate circuit plate upper and lower end respectively with right alternate circuit plate
The electrical contact board group at upper and lower end is at two closed circuit circuits, and two closed circuit circuits control motor phase each other respectively
Negative direction rotates, and the resistance sizes of four electrical contact plates are directly proportional to the length of electrical contact plate.
Further, spring is fixed by fixed bottom plate, and fixed bottom plate is arranged in lower triangle pallet medium position；
Vertical positioning pin is distributed in button both sides, is used for navigation button activity direction；
Button is in small cylinder shape, and one end connect with spring end, and the other end protrudes time triangle Tray side, conveniently press by
Button ejector；
Eject button is in cylindrical shape, and outboard end is spherical in semicircle, and medial end is in beveling ellipticity, near medial end
There are two protruding part, protruding parts to connect positioning fixinig plate by spring for distribution symmetrical above and below, and four positioning fixinig plates play jointly
The effect of positioning and ejection fulcrum, may finally realize that two eject buttons can freely snap into pop-up along two button holes；
The lower end for launching triple-angle is in inverted triangle body shape, and upper end is T shape positioning members, passes through two springs in inverted triangle body shape upper end
Connection positioning fixinig plate, two positioning fixinig plates play the role of positioning T shape positioning members simultaneously, may finally realize ejection triangle
Device can be under bullet on the two positioning free bullets of fixinig plate.
Further, liquid level sensing device is fixed on two side medium positions of triangle pallet；
It is hollow U-tube to seal U-shaped induction tube, and both ends are sealed by disk；
Preformed hole is offered in the middle part of disk, and preformed hole is sealed by rubber elastic membrane；
The external of displacement transmission lever wraps up rubber sleeve, and inside is thin steel conducting rod, has stronger rigidity, meets in buoyancy
Under, it will not flexural deformation when moving up and down；
Displacement transmission lever one end is T connector, and the other end passes through the rubber membrane at the end disc preformed hole of U-shaped induction tube, Gu
It is scheduled on buoy top；
Electric wire be can free bend common thin India-rubber wire；
Electric wire passes through from the inside thin steel conducting rod lower end of the displacement transmission lever on the left side and seals U-shaped induction tube, the displacement with the right
The thin steel conducting rod connection in inside of transmission lever, while meeting waterproof requirement；
It seals U-shaped induction tube and alternate circuit plate is fixed in positioning protective case box, it is U-shaped that positioning protective case box is mainly used for fixing seal
The position of induction tube and circuit board, and play the role of protection to its appearance, prevent external force to liquid level sensing device internal component
Destruction.
Further, upper instrument trays include upper triangle pallet and foot screw, the downside point at three angles of upper triangle pallet
It is furnished with foot screw；
Foot screw is the threaded cylinder of upper and lower side, is fixedly arranged in the middle of round tooth wheel disc；
Foot screw is connect by the upper end screw thread with upper triangle pallet, and the round tooth wheel disc at middle part is for triangle support in machinery adjustment
Three angles end height of disk；
Upper triangle pallet triangular shape, and three angles are arc angle bead；
Upper triangle tray center position offers the first reserved circular hole；
The middle and lower part position distribution of three sides of lower instrument trays has pin connecting groove；
The rectangular groove-like of pin connecting groove, is preset with pin among it；
Lower triangle pallet is identical as the upper shape of triangle pallet；
Equal-sized round thread groove is distributed in three arc angle bead ends of lower triangle pallet, and three round thread grooves are logical
Foot screw lower thread is crossed to connect with upper instrument trays；
Lower triangle tray center position offers the second reserved circular hole.
Further, power plant is fixed on the side of lower triangle pallet；
Power plant includes motor and longitudinal gear cylinder part, and motor is vertically fixed on the side of lower triangle pallet, can will be electric
Signal is converted into rotational power, and the top of each motor is provided with longitudinal gear cylinder part；
Longitudinal bar shaped gear, the tooth of gear and the round tooth wheel disc in the middle part of foot screw are distributed with around longitudinal gear cylinder part
Wheel engagement.
Further, power-supply controller of electric is connect with liquid level sensing device and power plant；
Power-supply controller of electric includes battery case, circuit board and switch, and one secondary control of circuit board, one liquid level sensing device starts.
Further, upper support bar is connect with the pin connecting groove of lower instrument trays；
Upper support bar includes upper hollow sting, and button hole is reserved in upper hollow sting lower part both sides, for installing eject button, overhead
Cardiac skeleton is internally provided with ejection triple-angle；
The upper end of upper hollow sting is provided with pin connection male member, and pin connection male member internal preset has pin hole；
Pin connection male member matches use, the pin of the upper following instrument trays of hollow sting with the pin connecting groove of lower instrument trays
Nail rotates for axis；
It is semi-circular shape that pin, which connects male member section,；
Upper hollow sting is in elongated rectangular shape shape, inner hollow.
Further, lower support bar includes lower hollow sting, and lower hollow sting two sides are equidistantly symmetrically distributed with reserved
The lower part in hole, lower hollow sting is fixedly connected with solid frame point, facilitates lower support bar to be fixed with ground and contacts；
Lower hollow sting is connect in elongated rectangular shape shape, inner hollow, upper part with upper support bar lower end；
Solid frame point is in filled inverted triangles shape, and side medium position is horizontally fixed with foot pedal, and foot pedal is in semicircle shape,
Solid frame point is trampled fixation by the person of being convenient for measuring with foot when use.
A kind of application method of liquid level induction automatic leveling measuring instrument bracket, includes the following steps：
Step 1 sets up measuring instrument bracket：Measuring instrument bracket is promoted to specified altitude assignment by the button for pinning button ejector, under
Supporting rod is snapped down to ground automatically under self gravitation effect, is placed on survey station, by two supports of measuring instrument bracket
Bar, which is placed, to be opened, and upper instrument trays are just slightly adjusted to horizontal, then release button, make the eject button of upper support bar pop up with
Lower support bar keeps lock-out state, is opened and is supported with measuring instrument bracket, instrument trays is made to be generally in level；
Step 2 installs measuring instrument：Measuring instrument is placed on measuring instrument bracket head, and makes measuring instrument base central and measuring instrument
Carriage center is aligned, and screws connection spiral, measuring instrument is made to be fixed in the upper instrument trays of measuring instrument bracket；
Step 3, automatic leveling measuring instrument：The switch for opening power-supply controller of electric first allows the motor of one side by circuit board control
The motor of rotation, the side is controlled by the electric signal of the liquid level difference induction conversion of corresponding liquid level sensing device, when it
When liquid level difference is zero, which reaches horizontality, starts the motor rotation for controlling another side；Similarly, the side
Motor is controlled by the electric signal of the liquid level difference induction conversion of corresponding liquid level sensing device, when two sides reach water simultaneously
Usually, upper instrument trays are finally adjusted to horizontal plane state, achieve the purpose that automatic leveling measuring instrument.
Advantageous effect：
1. by pressing button energy three supporting rods of simple realization while being adjusted to operation height, measuring instrument bracket operation
It is more convenient.
2. horizontal plane inductive signal is converted to electric signal by liquid level sensing device, reach the mesh of automatic leveling measuring instrument
, it is easy to use, it is not necessarily to artificial leveling.
It 3. the holder is simple to manufacture, of low cost, can produce in batches, realize that machine automatization leveling steps for measuring instrument
Essential step.
Description of the drawings
Fig. 1 is the overall schematic of one embodiment of the invention；
Fig. 2 is the frame upper overall plan view of one embodiment of the invention；
Fig. 3 is the upper instrument trays plan view of one embodiment of the invention；
Fig. 4 is the upper instrument trays structural schematic diagram of one embodiment of the invention；
Fig. 5 is the lower instrument trays plan view of one embodiment of the invention；
Fig. 6 is the lower instrument trays structural schematic diagram of one embodiment of the invention
Fig. 7 is the button ejector structural schematic diagram of one embodiment of the invention；
Fig. 8 is the powerplant configuration schematic diagram of one embodiment of the invention；
Fig. 9 is the liquid level sensing device structural schematic diagram of one embodiment of the invention；
Figure 10 is the power-supply controller of electric structural schematic diagram of one embodiment of the invention；
Figure 11 is the upper support bar structural schematic diagram of one embodiment of the invention；
Figure 12 is the lower support bar structural schematic diagram of one embodiment of the invention；
In figure：The upper instrument trays of 1-, the upper triangle pallets of 11-, 12- first reserve circular hole, 13- foot screws, instrument trays under 2-,
Triangle pallet under 21-, 22- second reserve circular hole, 23- button ejectors, and 231- fixes bottom plate, 232- springs, 233- buttons,
The vertical positioning pins of 234-, 235- wires, 24- pin connecting grooves, 3- power plants, 31- motors, the longitudinal directions 32- gear cylinder
Part, 4- liquid level sensing devices, 41- seal U-shaped induction tube, 42- buoys, 43- displacement transmission levers, 44- electric wires, 45- alternate circuits
Plate, 46- position protective case box, 5- power-supply controller of electric, 51- battery cases, 52- circuit boards, 53- switches, 6- upper support bars, the overhead 61-
Cardiac skeleton, 62- pins connect male member, and 63- positions fixinig plate, 64- eject buttons, and 65- launches triple-angle, 7- lower support bars, 71-
Lower hollow sting, 72- preformed holes, the solid frame points of 73-, 74- foot pedals.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
A kind of liquid level of the present embodiment incudes automatic leveling measuring instrument bracket, as shown in Figure 1, it include upper instrument trays 1, under
Instrument trays 2, power plant 3, liquid level sensing device 4, power-supply controller of electric 5, upper support bar 6 and lower support bar 7, upper instrument trays
1 is vertically connected with lower instrument trays 2, and power plant 3 is fixed on the side of lower instrument trays 2, and power is provided for whole device, and two
A liquid level sensing device 4 is fixed on 1 two sides of instrument trays, for level balance buoyancy to be converted to electric signal, power supply
Controller 5 is fixed on the third side of instrument trays 1, and power supply, 6 top of upper support bar and lower instrument are provided for power plant 3
2 pin of device pallet connects, and upper support bar 6 is vertically connected with lower support bar 7, and upper support bar 6 and lower support bar 7 are jointly entire dress
Offer support force effect is provided.
As shown in Figure 3,4, upper instrument trays 1 are made of upper triangle pallet 11, the first reserved circular hole 12 and foot screw 13.On
11 triangular shape of triangle pallet, three angles are arc angle bead, and three sides are respectively side A, side B, side C, upper triangle
11 size of pallet meets matches requirement with top measuring instrument.First reserved circular hole 12 is located in upper triangle pallet 11
Center portion position, size meets matches requirement with top measuring instrument position.Foot screw 13 is the threaded cylinder of upper and lower side,
It is fixedly arranged in the middle of round tooth wheel disc, totally three, the downside of three arc angle beads of triangle pallet 11 is distributed in, passes through the upper end
Screw thread is connect with upper triangle pallet 11, and the round tooth wheel disc at middle part is used for three angles end height of triangle pallet 11 in machinery adjustment
Degree.
As shown in Figure 5,6, lower instrument trays 2 are by lower triangle pallet 21, the second reserved circular hole 22, button ejector 23 and pin
Connecting groove 24 is followed closely to form.For lower triangle pallet 21 as upper 11 shape of triangle pallet, three sides are respectively side A, side
B, equal-sized round thread groove is distributed at three arc angle bead ends in side C, and diameter satisfaction is matched with foot screw 13
Set uses, and three round thread grooves are connect by 13 lower thread of foot screw with upper instrument trays 1.Second reserved circular hole 22
In lower 21 centre of triangle pallet, size meets matches requirement with top measuring instrument position.Pin connecting groove
24 rectangular groove-like, are distributed in the middle and lower part position of 2 three sides of lower instrument trays, and 24 middle preset of pin connecting groove has
Pin, it is convenient to be connect with lower support bar 7.
As shown in figure 5, button ejector 23 is arranged inside lower triangle pallet 21, it is specifically preset in lower triangle pallet 21
Medium position in the sides A.As shown in fig. 7, button ejector 23 is by fixed bottom plate 231, spring 232, button 233, vertical positioning
Pin 234 and wire 235 form.Fixed bottom plate 231 is located at lower 21 medium position of triangle pallet, is used for fixing internal spring 232,
Spring 232 is connect with button 233, provides elastic force for device, button 233 is at small cylinder shape, one end and internal spring 232
End connects, lower 21 side of triangle pallet of one end protrusion, facilitates button press ejector 23, vertical positioning pin 234 be distributed in by
233 both sides of button are used for 233 activity direction of navigation button, and wire 235 totally three, end is all connect with 233 inner end of button, when
When button press ejector 23, three wires 235 can be interlocked, achieve the purpose that three wires 235 while internally being shunk.
As shown in Fig. 2,8, power plant 3, is made of totally motor 31 and longitudinal gear cylinder part 32 by three.Power plant 3
It is fixed on the side of lower triangle pallet 21, satisfaction is matched with foot screw 13.Motor 31, is vertically fixed on totally respectively by three
Three sides of lower triangle pallet 21, can convert electrical signals to rotational power.Longitudinal gear cylinder part 32 is arranged each
The top of motor 31 is in cylindrical shape, and longitudinal bar shaped gear is around distributed with, and gear distribution situation meets and foot screw 13
The gear matches of the round tooth wheel disc at middle part use.
As shown in Fig. 2,9, liquid level sensing device 4, is fixed in the middle part of the sides A and the sides B of triangle pallet 11 totally by two
Position is formed by sealing U-shaped induction tube 41, buoy 42, displacement transmission lever 43, electric wire 44, circuit board 45 and positioning protective case box 46.
It is hollow U-tube to seal U-shaped induction tube 41, and both ends are sealed by middle part disk with holes, and the preformed hole in the middle part of disk passes through bullet
Property it is rubber diaphragm sealed, seal in U-shaped induction tube 41 reserve a semiliquid, be used for sensation level face.Buoy 42, totally two, respectively
Float on the U-shaped 41 both ends liquid surface of induction tube of sealing, can respectively liquid level be followed freely up and down to float.Displacement transmission lever 43, altogether
Two, one end is T connector, and the other end passes through the rubber membrane at the end disc preformed hole of U-shaped induction tube 41, is fixed on buoy
42 tops, external to wrap up rubber sleeve, inside is thin steel conducting rod, has stronger rigidity, meets under buoyancy, above and below
It will not flexural deformation when mobile.Electric wire 44 is can be with the common thin India-rubber wire of free bend, out of, the left side transmission lever 43
Portion thin steel conducting rod lower end, which passes through, seals U-shaped induction tube 41, is connect with the thin steel conducting rod in 43 inside of transmission lever on the right, full simultaneously
Sufficient waterproof requirement.Circuit board 45, which is located at, to be sealed right over U-shaped induction tube 41, and two circuit boards are at the vertical distribution in left and right, Mei Ge electricity
Road plate is divided to two electrical contact plates up and down, the electrical contact board group of the electrical contact plate of left circuit board lower end and right circuit board upper end
At a closed circuit circuit, similarly, the electrical contact board group of the electrical contact plate of left circuit board upper end and right circuit board lower end
At a closed circuit circuit, a closed circuit, which can meet, makes motor be rotated to assigned direction, another closed circuit is full
Foot rotates round about, and the resistance sizes of this four electrical contact plates are directly proportional to the length of electrical contact plate.Positioning shield
Shell box 46, size meet and seal U-shaped induction tube 41 and 45 matching used requirement of circuit board, are mainly used for fixing seal U
The position of type induction tube 41 and circuit board 45, and play the role of protection to its appearance, prevent external force in liquid level sensing device 4
The destruction of portion's component.
As shown in Fig. 2,10, power-supply controller of electric 5 is made of battery case 51, circuit board 52 and switch 53.Power-supply controller of electric 5 is logical
It crosses electric wire to connect with liquid level sensing device 4 and power plant 3, and power-supply controller of electric 5 is fixed on the middle position of instrument trays 1
It sets.51 internal battery of battery case can select rechargeable battery or alkaline battery, preferably rechargeable battery, battery size to meet dynamic
The rated voltage of power apparatus 3.Circuit board 52, which meets control, first allows the liquid level sensing device 4 of the sides A to start, instrument trays in leveling
1 sides A are horizontal plane, restart the liquid level sensing device 4 of the sides B, another angle point of leveling triangle to horizontal plane.
For switch 53 there are two gear, startup power supply when being moved to the left side closes power supply when being moved to the right.
As shown in figure 11, upper support bar 6 is pressed by upper hollow sting 61, pin connection male member 62, positioning fixinig plate 63, ejection
Button 64, ejection triple-angle 65 and wire 66 form.There are three upper support bars 6, is connect respectively with the pin of lower instrument trays 2 recessed
Slot 24 connects.Upper hollow sting 61 is in elongated rectangular shape shape, and inner hollow, button hole, upper hollow sting 62 are reserved in its underpart both sides
Size meet with measuring instrument match requirement.Pin connection male member 62 is located at the upper end of upper hollow sting 61, cuts
Face is semi-circular shape, and internal preset has pin hole, meets and matches use with the pin connecting groove 24 of lower instrument trays 2, makes
Hollow sting 61 can surround the pin rotation of lower instrument trays 2.Fixinig plate 63 is positioned, totally six, is fixed on hollow sting
Inside 61 lower ends, it is specifically distributed in the inside of two button holes, symmetrical four up and down, plays the role of positioning.Also
There are two two button hole upper middle positions are fixed on, positioning is equally played the role of in symmetrical distribution.Eject button
64, totally two, be in cylindrical shape, and outboard end is spherical at semicircle, medial end at beveling ellipticity, near the medial end on
Under it is symmetrical there are two protruding part, protruding part connect by spring with positioning fixinig plate 63, and four position fixinig plates 63 jointly
Play the role of positioning and ejection fulcrum, may finally realize that two eject buttons 64 can freely be snapped into along two button holes
Pop-up.It is in inverted triangle body shape to launch 65 lower end of triple-angle, and upper end is T shape positioning members, passes through two bullets in inverted triangle body shape upper end
Spring is fixedly connected with two positioning fixinig plates 63 of button hole upper middle position respectively, and two positioning fixinig plates 63 play positioning simultaneously
The effect of T shape positioning members may finally realize that ejection triple-angle 65 can position bullet on 63 free bullets of fixinig plate along two
Under.Wire 235 is located at the inside of upper support bar 6, and lower end is connect with the T shape positioning members of ejection triple-angle 65, and upper end is under
The button ejector 23 of instrument trays 2 connects, and may be implemented when pressing in the button 233 of button ejector 23, wire 235 is opened
There is deflated state in beginning, drives ejection triple-angle 65 to move up, ejection triple-angle 65 is made to be detached from two eject buttons of lower end
64, two eject buttons 64 start to spring into inside under spring action, when the button of release button ejector 23, effect step
Suddenly on the contrary, finally realizing that two eject buttons 64 pop up two sides under spring action.
As shown in figure 12, lower support bar 7 is made of lower hollow sting 71, preformed hole 72, solid frame point 73 and foot pedal 74.
Lower hollow sting 71 is connect in elongated rectangular shape shape, inner hollow, upper part with 6 lower end of upper support bar, the ruler of lower hollow sting 71
Very little size meets and the 61 matching used requirement of upper hollow sting.Preformed hole 72 is equidistantly symmetrically distributed in 71 liang of lower hollow sting
Side.72 size of preformed hole meets matches use with the eject button 64 of upper support bar 6.Solid frame point 73 and lower hollow sting 71
Lower part be fixedly connected, be in filled inverted triangles shape, the fixation of lower support bar 7 and ground facilitated to contact.Foot pedal 74 is in semicircle shape,
The sharp 73 triangle side medium positions of solid frame are horizontally fixed on, the person of being convenient for measuring is trampled solid frame point 73 with foot when in use
It is fixed.
Specific embodiment：
It is two bench marks that certain engineering, which has BM-A and BM-B, needs the height difference that A, B point-to-point transmission are measured with spirit level.
In conjunction with shown in Fig. 1-Figure 12, specifically used steps are as follows：
Step 1 sets up measuring instrument bracket：Both hands hold 1 both sides of instrument trays, and hand thumb pins button ejector 23
Measuring instrument bracket is firmly promoted to specified altitude assignment by small cylinder button 233, and lower support bar 7, can be certainly under self gravitation effect
It is dynamic to be snapped down to ground, it is placed on survey station, two supporting rods of measuring instrument bracket is placed with the right hand and a foot and are opened,
And it is just slightly horizontal by 1 adjustment of upper instrument trays to detect by an unaided eye, and then unclamps the button 233 at right hand thumb, makes support
The pop-up of eject button 64 and the lower support bar 7 of bar 6 keep lock-out state, so that measuring instrument bracket is opened support, make instrument trays 1
It is generally in level.
Step 2 installs measuring instrument：By measuring instrument, by being taken out in case, (both hands hold measuring instrument bracket；Or hold measuring instrument on the other hand
Holder holds pedestal on the other hand, forbids singlehanded extraction measuring instrument) it is placed on measuring instrument bracket head, and make measuring instrument base central
The center of substantially aligned measuring instrument bracket screws connection spiral, and measuring instrument is made to be fixed on the upper instrument trays 1 of measuring instrument bracket
On.
Step 3, automatic leveling measuring instrument：The switch 53 for opening power-supply controller of electric 5 first allows the sides A by the control of circuit board 52
The motor 31 in face rotates, and so that the sides A is reached horizontality with prestissimo, controls the motor of the sides B again after it is stopped
31 rotations, and opposite direction rotates the both sides A, B motor 31 each other, the motor 31 of the sides A incudes particular by the liquid level of the sides A
The electric signal control of the liquid level difference induction conversion of device 4, when its liquid level difference is zero, i.e., the sides A reach horizontal
State, the motor 31 for starting to start the sides B rotate；Similarly, the motor 31 of the sides B particular by the sides B liquid level sensing device 4
Liquid level difference induction conversion electric signal control, when A, B amount side reach level simultaneously, the final tune of upper instrument trays 1
To horizontal plane state, achieve the purpose that automatic leveling measuring instrument.
Step 4, after completing aforesaid operations, the height difference of 2 points of A, B can be calculated by surveying the elevation of 2 points of A, B.
Limiting the scope of the invention, those skilled in the art should understand that, in technical scheme of the present invention
On the basis of, the various modifications or variations that can be made by those skilled in the art with little creative work still the present invention's
Within protection domain.
Claims (10)
1. a kind of liquid level incudes automatic leveling measuring instrument bracket, it includes upper instrument trays（1）, lower instrument trays（2）, upper support
Bar（6）And lower support bar（7）, upper instrument trays（1）With lower instrument trays（2）Connection, lower instrument trays（2）With upper support bar
（6）Top connects, upper support bar（6）Lower part and lower support bar（7）Connection, upper support bar（6）And lower support bar（7）It is whole jointly
A holder provides support force, it is characterised in that：The upper instrument trays（1）Two sides be respectively fixed with liquid level sensing device
（4）, for level balance buoyancy to be converted to electric signal；
The upper instrument trays（1）Third side be fixed with power-supply controller of electric（5）, for being power plant（3）Electricity is provided
Source；
The lower instrument trays（2）Side be fixed with power plant（3）, for providing power for entire holder；
The lower instrument trays（2）Including lower triangle pallet（21）, lower triangle pallet（21）It is internally provided with button ejector
（23）；
The button ejector（23）Including spring（232）, button（233）And wire（235）, spring（232）With button
（233）Connection, button（233）Inner end connects three wires（235）One end, the other end connect upper support bar（6）Ejection three
Angle device（65）Triple-angle is launched in upper end（65）With upper support bar（6）Eject button（64）Work compound；
The upper support bar（6）Eject button（64）With lower support bar（7）Preformed hole（72）Matching uses.
2. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The liquid level induction dress
It sets（4）Including sealing U-shaped induction tube（41）, displacement transmission lever（43）With alternate circuit plate（45）；
The U-shaped induction tube of sealing（41）An interior reserved semiliquid；
The U-shaped induction tube of sealing（41）Both ends liquid surface is provided with buoy（42）, buoy（42）Liquid level where following respectively
Freely up and down float；
The buoy（42）Top is fixed with displacement transmission lever（43）, displacement transmission lever（43）Between pass through electric wire（44）Connection；
The U-shaped induction tube of sealing（41）It is arranged above alternate circuit plate（45）, two alternate circuit plates（45）In left and right
Vertical distribution, each alternate circuit plate（45）It is divided to two electrical contact plates up and down, left alternate circuit plate（45）The circuit of upper and lower end
Contact plate respectively with right alternate circuit plate（45）The electrical contact board group at upper and lower end is at two closed circuit circuits, and two are closed
It closes circuit loop and controls motor respectively（31）Opposite direction rotates each other, and the resistance sizes of four electrical contact plates connect with circuit
The length of touch panel is directly proportional.
3. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The spring（232）
Pass through fixed bottom plate（231）It is fixed, fixed bottom plate（231）It is arranged in lower triangle pallet（21）Medium position；
The button（233）Vertical positioning pin is distributed in both sides（234）；
The button（233）In small cylinder shape, one end and spring（232）End connects, the lower triangle pallet of other end protrusion
（21）Side；
The eject button（64）In cylindrical shape, outboard end is spherical in semicircle, and medial end is in beveling ellipticity, in inside
There are two protruding part, protruding part passes through spring connection positioning fixinig plate for distribution symmetrical above and below near end（63）；
The ejection triple-angle（65）Lower end be in inverted triangle body shape, upper end is T shape positioning members, logical in inverted triangle body shape upper end
Cross two springs connection positioning fixinig plate（63）.
4. liquid level according to claim 2 incudes automatic leveling measuring instrument bracket, it is characterised in that：The liquid level induction dress
It sets（4）It is fixed on triangle pallet（11）Two side medium positions；
The U-shaped induction tube of sealing（41）For hollow U-tube, both ends are sealed by disk；
Preformed hole is offered in the middle part of the disk, and preformed hole is sealed by rubber elastic membrane；
The displacement transmission lever（43）It is external wrap up rubber sleeve, inside is thin steel conducting rod；
The displacement transmission lever（43）One end is T connector, and the other end passes through U-shaped induction tube（41）End disc preformed hole at
Rubber membrane, be fixed on buoy（42）Top；
The electric wire（44）For can free bend common thin India-rubber wire；
The electric wire（44）Displacement transmission lever from the left side（43）Inside thin steel conducting rod lower end pass through and seal U-shaped induction tube
（41）, the displacement transmission lever with the right（43）Inside thin steel conducting rod connection；
The U-shaped induction tube of sealing（41）With alternate circuit plate（45）It is fixed on positioning protective case box（46）It is interior.
5. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The upper instrument trays
（1）Including upper triangle pallet（11）And foot screw（13）, upper triangle pallet（11）Three angles on the downside of foot screw is distributed with
（13）；
The foot screw（13）For the threaded cylinder of upper and lower side, it is fixedly arranged in the middle of round tooth wheel disc；
The foot screw（13）Pass through the upper end screw thread and upper triangle pallet（11）Connection；
The upper triangle pallet（11）Triangular shape, and three angles are arc angle bead；
The upper triangle pallet（11）Centre offers the first reserved circular hole（12）；
The lower instrument trays（2）The middle and lower part position distribution of three sides has pin connecting groove（24）；
The pin connecting groove（24）Rectangular groove-like, is preset with pin among it；
The lower triangle pallet（21）With upper triangle pallet（11）Shape it is identical；
The lower triangle pallet（21）Three arc angle bead ends be distributed with equal-sized round thread groove, three round spiral shells
Line groove passes through foot screw（13）Lower thread and upper instrument trays（1）Connection；
The lower triangle pallet（21）Centre offers the second reserved circular hole（22）.
6. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The power plant
（3）It is fixed on lower triangle pallet（21）Side；
The power plant（3）Including motor（31）With longitudinal gear cylinder part（32）, motor（31）Vertically it is fixed on lower triangle
Pallet（21）Side, each motor（31）Top be provided with longitudinal gear cylinder part（32）；
The longitudinal direction gear cylinder part（32）Longitudinal bar shaped gear, gear and foot screw is distributed in surrounding（13）The circle at middle part
The gear of shape toothed disc engages.
7. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The power-supply controller of electric
（5）With liquid level sensing device（4）And power plant（3）Connection；
The power-supply controller of electric（5）Including battery case（51）, circuit board（52）And switch（53）, circuit board（52）One secondary control one
A liquid level sensing device（4）Start.
8. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The upper support bar
（6）With lower instrument trays（2）Pin connecting groove（24）Connection；
The upper support bar（6）Including upper hollow sting（61）, upper hollow sting（61）Button hole is reserved in lower part both sides, for pacifying
Fill eject button（64）, upper hollow sting（61）It is internally provided with ejection triple-angle（65）；
The upper hollow sting（61）Upper end be provided with pin connection male member（62）, pin connection male member（62）Internal preset has
Pin hole；
The pin connects male member（62）With lower instrument trays（2）Pin connecting groove（24）Matching uses, upper hollow sting
（61）Following instrument trays（2）Pin rotated for axis；
The pin connects male member（62）Section is semi-circular shape；
The upper hollow sting（61）In elongated rectangular shape shape, inner hollow.
9. liquid level according to claim 1 incudes automatic leveling measuring instrument bracket, it is characterised in that：The lower support bar
（7）Including lower hollow sting（71）, lower hollow sting（71）Two sides are equidistantly symmetrically distributed with preformed hole（72）, under hollow branch
Frame（71）Lower part be fixedly connected with solid frame point（73）；
The lower hollow sting（71）In elongated rectangular shape shape, inner hollow, upper part and upper support bar（6）Lower end connects；
The solid frame point（73）In filled inverted triangles shape, side medium position is horizontally fixed with foot pedal（74）, ride
Plate（74）In semicircle shape.
10. the application method of the liquid level induction automatic leveling measuring instrument bracket according to any one of claim 1-9, special
Sign is：Include the following steps：
Step 1 sets up measuring instrument bracket：Pin button ejector（23）Button（233）, measuring instrument bracket is promoted to finger
Fixed height, lower support bar（7）It is snapped down to ground automatically under self gravitation effect, is placed on survey station, by measuring instrument branch
Two supporting rods of frame, which are placed, to be opened, and just slightly by upper instrument trays（1）Adjustment is horizontal, then release button（233）, make branch
Strut（6）Eject button（64）Pop-up and lower support bar（7）Lock-out state is kept, is opened and is supported with measuring instrument bracket, made
Instrument trays（1）It is generally in level；
Step 2 installs measuring instrument：Measuring instrument is placed on measuring instrument bracket head, and makes measuring instrument base central and measuring instrument
Carriage center is aligned, and screws connection spiral, measuring instrument is made to be fixed on the upper instrument trays of measuring instrument bracket（1）On；
Step 3, automatic leveling measuring instrument：Open power-supply controller of electric（5）Switch（53）, pass through circuit board（52）Control first allows
The motor of one side（31）Rotation, the motor of the side（31）Pass through corresponding liquid level sensing device（4）Liquid level difference sense
The electric signal control that should be converted, when its liquid level difference is zero, which reaches horizontality, starts to control another side
Motor（31）Rotation；Similarly, the motor of the side（31）Pass through corresponding liquid level sensing device（4）Liquid level difference induction turn
The electric signal control changed, when two sides reach level simultaneously, upper instrument trays（1）It finally is adjusted to horizontal plane state, is reached certainly
The purpose of dynamic leveling measuring instrument.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810678076.8A CN108645391A (en) | 2018-06-27 | 2018-06-27 | A kind of liquid level induction automatic leveling measuring instrument bracket and its application method |
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|---|---|---|---|
| CN201810678076.8A CN108645391A (en) | 2018-06-27 | 2018-06-27 | A kind of liquid level induction automatic leveling measuring instrument bracket and its application method |
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| CN108645391A true CN108645391A (en) | 2018-10-12 |
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ID=63753690
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914850A (en) * | 2019-03-27 | 2019-06-21 | 山东建固特种专业工程有限公司 | A kind of transport building instruction device in place and method |
| CN110514866A (en) * | 2019-08-20 | 2019-11-29 | 东南大学 | A kind of assembly type wind-velocity indicator support of automatically calibrating |
| CN116448058A (en) * | 2023-04-23 | 2023-07-18 | 太湖流域管理局苏州管理局 | Automatic leveling device and leveling method for leveling rod |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007279452A1 (en) * | 2006-07-31 | 2008-02-07 | Felix Edward Joseph Rust | Tilt apparatus and method for operating it |
| TWM374560U (en) * | 2009-10-06 | 2010-02-21 | Yu-Feng Lin | Tilted bridge warning device |
| CN203688577U (en) * | 2013-12-25 | 2014-07-02 | 长安大学 | Pitot tube flow velocity measuring device capable of removing bubbles |
| CN104934260A (en) * | 2015-06-26 | 2015-09-23 | 中国石油集团西部钻探工程有限公司 | Three-protection liquid level-tracking floating switch |
| CN205384025U (en) * | 2016-03-11 | 2016-07-13 | 张忠良 | Gravity type engineering survey centering leveling tripod |
| CN205861044U (en) * | 2016-04-07 | 2017-01-04 | 周悦 | Terrace statoscope |
| CN206192361U (en) * | 2016-11-27 | 2017-05-24 | 甘肃建筑职业技术学院 | Wholly hang gravity anping building laser measuring instrument |
| CN208350080U (en) * | 2018-06-27 | 2019-01-08 | 吴刚 | A kind of liquid level induction automatic leveling measuring instrument bracket |
-
2018
- 2018-06-27 CN CN201810678076.8A patent/CN108645391A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007279452A1 (en) * | 2006-07-31 | 2008-02-07 | Felix Edward Joseph Rust | Tilt apparatus and method for operating it |
| TWM374560U (en) * | 2009-10-06 | 2010-02-21 | Yu-Feng Lin | Tilted bridge warning device |
| CN203688577U (en) * | 2013-12-25 | 2014-07-02 | 长安大学 | Pitot tube flow velocity measuring device capable of removing bubbles |
| CN104934260A (en) * | 2015-06-26 | 2015-09-23 | 中国石油集团西部钻探工程有限公司 | Three-protection liquid level-tracking floating switch |
| CN205384025U (en) * | 2016-03-11 | 2016-07-13 | 张忠良 | Gravity type engineering survey centering leveling tripod |
| CN205861044U (en) * | 2016-04-07 | 2017-01-04 | 周悦 | Terrace statoscope |
| CN206192361U (en) * | 2016-11-27 | 2017-05-24 | 甘肃建筑职业技术学院 | Wholly hang gravity anping building laser measuring instrument |
| CN208350080U (en) * | 2018-06-27 | 2019-01-08 | 吴刚 | A kind of liquid level induction automatic leveling measuring instrument bracket |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914850A (en) * | 2019-03-27 | 2019-06-21 | 山东建固特种专业工程有限公司 | A kind of transport building instruction device in place and method |
| CN110514866A (en) * | 2019-08-20 | 2019-11-29 | 东南大学 | A kind of assembly type wind-velocity indicator support of automatically calibrating |
| CN116448058A (en) * | 2023-04-23 | 2023-07-18 | 太湖流域管理局苏州管理局 | Automatic leveling device and leveling method for leveling rod |
| CN116448058B (en) * | 2023-04-23 | 2024-01-02 | 太湖流域管理局苏州管理局 | Automatic leveling device and leveling method for leveling rod |
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