CN105782673A - Total-station instrument tripod - Google Patents
Total-station instrument tripod Download PDFInfo
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- CN105782673A CN105782673A CN201610326304.6A CN201610326304A CN105782673A CN 105782673 A CN105782673 A CN 105782673A CN 201610326304 A CN201610326304 A CN 201610326304A CN 105782673 A CN105782673 A CN 105782673A
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- station tripod
- center bore
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- 238000005070 sampling Methods 0.000 claims abstract description 13
- 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 claims description 19
- 239000011888 foil Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 abstract description 5
- 230000000007 visual effect Effects 0.000 abstract 1
- 239000003446 ligand Substances 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/32—Undercarriages for supports with three or more telescoping legs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
- F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a total-station instrument tripod, which comprises a frame, a seat, a centering assembly, a resistance strain gage, a sampling driving circuit, a processing circuit, an output circuit and a protective casing. The total-station instrument tripod is characterized in that the resistance strain gage is used to sample a state of a center seat hole; therefore, a more visual effect can be achieved in contrast with the use of a bubble level, and a higher leveling speed can be realized.
Description
Technical field
The present invention relates to a kind of total station tripod.
Background technology
It is arranged on bottom total powerstation in total station tripod, by centralized positioning, total powerstation is arranged in total station tripod.The level of total powerstation is ensured by adjusting the level of set square in total station tripod.
Typically, total station tripod generally arranges level gauge, for the horizontal adjustment of set square.The level gauge used is usually round level(l)ing bubble or the two of orthogonal setting cylinder level(l)ing bubbles, by making level(l)ing bubble flatten, indicates centering rod vertical.
Although level(l)ing bubble is cheap, relatively accurate level(l)ing bubble is from 30 yuan～50 yuan not etc., easy level(l)ing bubble is only less than a yuan, but its intuitive is also bad, adjust the relative difficulty needing experience and become, especially in use, operator are not easy to notice the state change of level(l)ing bubble, thus drawing measurement data accurately.
Additionally, such as round level(l)ing bubble, it is common to use three screws are fixed on set square, due to reasons such as carrying, collisions, it is easy to produce the asymmetric of screw and loosen, it is necessary to circle level(l)ing bubble is flattened again, namely need to eliminate centering rod heeling error.The heeling error removing method of current total station tripod bothers very much, in other words, although circle level(l)ing bubble is cheap, but owing to error concealment is cumbersome, can increase unnecessary maintenance cost, cause that the use cost of entirety is higher.
Additionally, for the adjustment of total station tripod, generally include following steps:
First it is erection total powerstation, it is possible to total powerstation is set up in the total station tripod of stable setting in advance, screw the center convolution on total powerstation.
Then, by checking level gauge, 3 foot screws rotating total powerstation are adjusted, and are substantially flattened by total powerstation.
And then, it is necessary to the essence carrying out total powerstation is put down, and specifically makes the cylinder level(l)ing bubble on total powerstation alidade be parallel to any pair foot screw, rotates two foot screws and makes the bubble of cylinder level(l)ing bubble placed in the middle；Then, by alidade half-twist, rotate total powerstation another one foot screw and make the bubble of long level(l)ing bubble placed in the middle.
Finally verify again, specifically by total powerstation alidade half-twist again, if the bubble of the long level(l)ing bubble of total powerstation is still placed in the middle, represents and flatten；If still there being deviation, it is possible to again repeat the step that essence is flat.It is typically repeated 1～2 time just can adjust.
Usual foregoing is it can be seen that use a pair level(l)ing bubble to flatten, it is necessary to repeatedly adjusting, verify, adjustment difficulty is relatively larger.And the correctness that level(l)ing bubble is distinguished also can affect the available accuracy of leveling.
Summary of the invention
Therefore, it is an object of the invention to provide a kind of total station tripod, it is possible to the relatively quick leveling carrying out total powerstation.
The present invention is by the following technical solutions:
A kind of total station tripod, including support body, this support body top includes the set square being provided with center bore, also includes:
Seat portion, is had and is threadedly connected to bore lower end, center the pedestal with center bore coaxial line by center；The lower end of this pedestal is provided with the ball-and-socket of spherical hinge, and is connected to the support with axial hole at the lower end periphery of pedestal, and wherein axial hole is positioned at the lower section of ball-and-socket, and with center bore coaxial line；
Centering assembly, this centering assembly includes coordinating the bulb to form spherical hinge with described ball-and-socket, being connected to bulb and the auxiliary section downwardly extending and coordinating with described axial hole, and is connected to lower end, auxiliary section and extends further downward to connect the connecting rod of weight；Wherein form annular gap between auxiliary section and axial hole；
Resistance strain gage, totally four, and annular array is in the circumference of described annular gap, and the gap width that thickness is annular gap of this resistance strain gage of radial direction in axial hole；
Sampling drive circuit, connects above-mentioned four sheet resistance foil gauges, it is provided that drives power supply the resistance variations of sampling resistor foil gauge, generates variable；
Process circuit, connect described sampling drive circuit, the variable sampled is processed, produce the incline direction of center bore；
Output circuit, output is to present described incline direction；
Protection set, is connected to subordinate's end, and this protection set is tubular body, is used for holding described centering assembly in pipe, and by the hard-over of tube wall constraint centering assembly.
Above-mentioned total station tripod, four sheet resistance foil gauges constitute parallel circuit；
Correspondingly, described sampling drive circuit includes the power circuit of described parallel circuit and each branch road of parallel circuit is carried out the current sensor of current sample, connects the controller with analog input interface of described current sensor, to produce the variable of resistance variations.
Above-mentioned total station tripod, described auxiliary section is positive four bank or ridge, and correspondingly, described axial hole is square hole, the annular gap side of being annular.
Above-mentioned total station tripod, the side of described weight is provided with locking hole, accordingly, is provided with side opening at protection set corresponding to the position of locking hole, for coordinating, by screw and locking hole, the locking realizing weight under portable state.
Above-mentioned total station tripod, 0.5 degree, described hard-over position.
Above-mentioned total station tripod, the length of described connecting rod is not less than 30cm, and is not more than 50cm.
Above-mentioned total station tripod, it is characterised in that described center bore is screwed hole, correspondingly, the upper end in described seat portion has the center screw thread screwed with center bore.
Above-mentioned total station tripod, the pedestal of the downside of described center screw thread is provided with the spacing ring that center screw thread is upwards retrained.
Above-mentioned total station tripod, described set square is provided with level(l)ing bubble.
Above-mentioned total station tripod, the lower end of described pedestal has one section and connects external screw thread, and correspondingly, in described protection set upper side, pipe has and is connected, with described, the connection female thread that external screw thread screws；
The external diameter of protection set is identical with the external diameter of pedestal.
The present invention naturally droops indicated vertical based on weight, sampled by resistance strain gage, four resistance strain gages are up to two engaged portion extruding, by the simple conversion of two orthogonal amounts, can be easy to draw the incline direction of Zuo Bu center bore, thus being easily adjusted in place by support body based on incline direction.Resistance strain gage by the restriction of weight activity space, by excessive condensation, and will not be not easy plastic deformation after being configured to put in place, and from without carrying out error correction frequently, overall use cost is relatively low.If relative two resistance strain gages all produce variable output, then showing that at least one of which is problematic, the lookup of its problem is also more convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of total station tripod according to the present invention.
Fig. 2 is a portion and, the exploded view of protection set, centering assembly.
Fig. 3 is the structural representation in one direction, a portion.
Fig. 4 is a structural representation in another direction, portion.
Fig. 5 is the structure principle chart of a kind of centering assembly.
Fig. 6 is a kind of protection nested structure schematic diagram.
Fig. 7 is a kind of frame structure schematic diagram.
In figure: 1. a portion, 2. protection set, 3. support body, 4. centering assembly.
11. center screw thread, 12. spacing rings, 13. pedestals, 14. connect external screw thread, 15. ball-and-sockets, 16. supports, 17. inductive heads, 18. resistance strain gages, 19. centre bores.
21. connection female thread.
31. set square, 32. center bore, 33. level(l)ing bubbles, 34. supporting legs.
41. bulb, 42. ligands, 43. connecting rods, 44. weights, 45. locking holes.
Detailed description of the invention
The use state of total station tripod is available to the plane of one level of total powerstation, shows the axis vertical of total station tripod Shang Zeshiqi center bore 32, or set square 31 is in level.Thus, in actual applications, vertical is above-below direction, therefore, in the present invention as referential.Although such as Fig. 4, as shown in 6 be not vertical drawing layout, it is understood by those skilled in the art that the seat portion in such as Fig. 4, the right-hand member shown in its Fig. 4 is its upper end, and left end is its lower end.
Typically, total station tripod has center bore 32, is used for positioning and installing total powerstation, and in the present invention, center bore 32, except being used for positioning total powerstation, is additionally operable to location and the installation in a portion 1.
If center bore 32 makes installing space be subject to interfering because of the installation in seat portion 1, seat portion 1 can arrange centre bore 19 to replace the center bore 32 installation to total powerstation.
In the present invention, main attachment structure is threaded, but is not excluded for other attachment structure, for instance figure seat portion 1 can be welded on the lower surface of set square 31.
Specifically flatten structure although employing, but be not excluded for traditional leveling structure, for instance level(l)ing bubble 33, it is possible to use level(l)ing bubble realizes thick flat, makes set square 31 be in level substantially in other words, then pass through the present invention and specifically flatten structure to carry out essence flat.
As described in the background section, level(l)ing bubble 33 level gauge such as grade is fixed on such as set square 31 usually by screw etc., it is possible to because different reasons causes that it can not correctly indicate the level of set square 31.Accordingly, it would be desirable to further provide for the present invention specifically flatten structure.
For realizing the purpose of the present invention, as it is shown on figure 3, the lower end in present portion 1 is provided with the ball-and-socket 15 of spherical hinge, when using spherical hinge to connect following centering assembly 4, centering assembly 4 has the attribute of spherical hinge.
And then, comparatively speaking, for hinge, obligatory point is the closer to pin joint, the resistance arm of this obligatory point is more little, and the closer to pin joint, such as resistance strain gage 18 below to arrange difficulty more big, especially, for plates, its stress disequilibrium is more big, in order to reduce the impact of stress disequilibrium, and be conducive to the setting of resistance strain gage 18, the position arranging resistance strain gage 18 should lower than ball-and-socket 15 certain distance herein, this distance is present the width on portion 1 axial direction more preferably greater than three times of resistance strain gages 18, and had better not be present the width on portion 1 axial direction more than 8 times of resistance strain gages 18.
Herein, those skilled in the art is to be understood that, for total station tripod, at large, no matter being the adjustment utilizing the mode that the adjustment that traditional mode carries out vertical is also based on the present invention to carry out vertical, the artificial vertical that first passes through all without exception initially adjusts, and the initial verticality error adjusted is not too large, such as become the angle of more than 10 degree with vertical, it is clear that be unpractical.Artificial initial adjustment substantially ensure that set square 31 is approximate horizontal, the vertical error generally manually adjusted is within 5 degree of scopes, for experienced operator, even do not utilize such as level gauge, it is possible to directly center bore 32 is adjusted vertical error within 1 degree.
Based on above understanding, resistance strain gage 18 in use will not be subject to too big pressure.
Certainly, it is contemplated that under portable state, total station tripod is probably and wants horizontal to place, with this understanding, it may be considered that example centering assembly 4 described as follows is locked, it is to avoid make it be damaged by pressure by resistance strain gage 18.
Compared to traditional total station tripod, the sensitivity of resistance strain gage is relatively good, but is also easier to damage, and therefore, in use needs to protect resistance strain gage fully.
Therefore, in certain embodiments, the hard-over of centering assembly 4 can be limited, owing to such as protecting set 2, its inner tube diameter is limited, and the restriction of direct protected set 2 inner tube diameter of hard-over of centering assembly 4, therefore, can set that the size of such as weight 44, the hard-over of restriction centering assembly 4, such as hard-over is set within the scope of 0.5 degree, it is to be understood that, although limited hard-over is smaller, but do not affect the use of this total station tripod, it is in that, since the gradient of center bore 32 is more than 0.5 degree in total station tripod, so the pressure holding to resistance strain gage 18 is exactly maximum rating, will not become big more greatly again along with the change of the gradient of center bore 32, but can indicate that the axis of center bore 32 to which direction tilts, and do not affect the use of total station tripod.
Therefore, in preferred embodiment, weight 24 is more slightly smaller than the diameter of inner pipe of protection set 2, it is only necessary to calculate through simple, it is possible to determine the matching relationship that such as centering assembly 4 hard-over is the weight 44 required for 0.5 degree and protection set 2.
Therefore, in preferred embodiment, weight 44 is more slightly smaller than the diameter of inner pipe of protection set 2, it is only necessary to calculate through simple, it is possible to determine the matching relationship that such as centering assembly 2 hard-over is the weight 24 required for 0.5 degree and protection set 2.
It is thus preferable to, centering assembly 4 limits the hard-over of centering assembly 4 by limiting weight 44 and protection set 2 diameter of inner pipe, and with protective resistance foil gauge 18, this hard-over is defined to 0.5 degree.
Further, the length of described connecting rod 43 is not less than 30cm, and it is not more than 50cm, by length amplification, it is achieved the angle of trace is changed, it is amplified to the bigger amount of movement of weight 44, but this length is unsuitable excessive, otherwise can produce relatively larger pressure, in other words, the arm of force of weight 44 can be long, causes that the power acted on resistance strain gage 18 is excessive.Also unsuitable too small, otherwise amplification is very limited.
First aspect for protective resistance foil gauge 18; the lower end in present portion extends further downward; the part extended further downward needs to get out of the way the passage of example centering assembly 4 described as follows; therefore; the part extended further downward arranges periphery or the side of lower end, present portion 1; support 16 as shown in Figure 3, the lower end of support 16 is inductive head 17 as shown in Figure 3, and inductive head 17 is used for arranging described resistance strain gage 18.
As in figure 2 it is shown, inductive head 17 is with the axial via in a seat portion 1 in figure, it is called axial hole, after passing beneath, cooperatively forms spherical hinge with described ball-and-socket 15 for centering assembly 4.
At this, axial hole part is used for arranging resistance strain gage 18, and is positioned at the lower section of ball-and-socket 15, as it was previously stated, the distance below this needs restriction, for instance aforesaid distance selects.
No matter axial hole is circular hole or square hole, is respectively provided with axis, and this axis is identical with the axis in seat portion 1.
In main contents herein, the referential on basis is the axis of center bore 32, is in that center bore 32 directly positions total powerstation, and its state directly affects the state of total powerstation, it is necessary to controlled structure.
In sum; as shown in Figure 5; must be provided for coordinating to be formed the bulb 41 of spherical hinge with described ball-and-socket 15 about described centering assembly 4 first its upper end; also should protect the auxiliary section being connected to bulb 41 and downwardly extending and coordinate with described axial hole; ligand 42 as shown in Figure 5; wherein it is additionally provided with connector bar between ligand 42 and bulb 41, is used for producing aforesaid distance, i.e. distance between spherical hinge and resistance strain gage 18.
Certainly, ligand 42 can be relatively long, and connector bar only realizes connecting without long, and the existence of connector bar is also used for avoiding the section of ligand 42 excessive, and affects the laying of spherical hinge.
Further, centering assembly 4 also includes being connected to ligand 42 lower end and extending further downward to connect the connecting rod 43 of weight 44.
Wherein form annular gap between auxiliary section and axial hole, when should be appreciated that the state forming annular gap, the axis of center bore 32 is in vertical state, also easy to understand by context, need in annular gap, arrange resistance strain gage 18, just certainly exist this state.
About annular gap, it is possible to be ring gap, it is also possible to the side's of being czermak space, no matter which kind of configuration state, do not affect the setting of resistance strain gage 18.Preferably side's czermak space; in the quadrangular structure of inductive head 17 as shown in Figure 3; it also can retrain the spherical hinge degree of freedom around center bore 32 axis rotation with coordinating of centering assembly 4; thus providing reasonable basis for locking weight 44 further, thus constituting second aspect of protective resistance foil gauge 18.
As previously mentioned, for weight 44 can only by weight 44 with protection set 2 coordinate realizations, it is desirable that employing supplementary structure, for instance the locking hole 45 shown in Fig. 5.
About resistance strain gage 18, itself belonging to the element measuring strain, the change that mechanical component strains can be converted to resistance variations by it.Resistance strain gage by the constantan wire of Φ=0.02-0.05mm or nickel filament be coiled into palisade (or corroding into palisade by very thin metal forming) be clipped in two-layer heat insulating lamella (substrate) make.It is connected with foil gauge wire grid with silver-coated copper wire, goes between as resistor disc.
Resistance strain gage 18 can measure the strain of trace, accordingly, it would be desirable to pass through structure for amplifying, bigger motion transform is become less motion, the weight 44 such as downwardly extended by connecting rod 43, when identical corner, the path of ligand 42 is less than the path of weight 44.
Moreover, it will be appreciated that the power that resistance strain gage 18 can carry is not required to too big, can having good response, therefore, although employing the concept of weight 44, but also simply using this representation of concept counterweight, to improve the good response performance to angle of inclination.
Quantity about resistance strain gage 18, it is set to four, and annular array is in the circumference of described annular gap, and the gap width that thickness is annular gap of this resistance strain gage 18 of the radial direction in axial hole, in other words, when centering assembly 4 produces non-vertical state, a piece of or two panels resistance strain gage namely can be pressed onto.
Change in resistance and the application thereof of resistance strain gage 18 are very general, or it is also highly developed, its sampling is usually voltage sample, and current sample can also be carried out in some applications, when knowing which sheet resistance foil gauge 18 or which two panels resistance strain gage 18 produces change in resistance, will very easily determine that centering assembly 4 tilts to which or which both direction.
In some embodiments, it is only necessary to represent qualitatively, an instruction is set for each resistance strain gage 18, for instance electric current indicates, if electric current changes, then shows its pressurized.
Quantitative instruction can be carried out in other embodiments, need to be calculated when carrying out quantitatively instruction, compared to previous embodiment, can be more more complicated in structure, but more accurate.
About quantization, then it calculates also very simple, when being realised that only a piece of resistance strain gage 18 pressurized, necessarily directly determines on predetermined orthogonal direction, without being precisely calculated.
Just need when there being two panels pressurized accurately to calculate, utilize parallelogram law to be also very easy to calculate the concrete direction of inclination.
Additionally, necessarily, resistance strain gage 18 needs drive circuit, in other words, can directly be expressed as its power supply power supply in some simply application.In the application that some are somewhat complicated, it is possible to adopt such as regulated power supply, current source or voltage source, especially during sampled voltage signal, it is desirable to adopt voltage source, if being then preferably used current source during sampled current signals.
And then, for its sampling, it is possible to carry out the sampling of electric current or voltage according to the configuration of the last period, generate the variable quantity of electric current or voltage, be called variable.
Which sheet resistance foil gauge 18 pressurized the variable quantity of electric current and voltage can embody, thus first providing the incline direction of center bore 32 qualitatively.
For in calculative application, it is necessary to arrange process circuit, be generally adopted intelligent device, for instance have the controller of less input/output interface, without adopting the single-chip microcomputer with relatively multiplex roles.
Directly adopting analog input, controller is generally equipped with analog quantity input, without carrying out analog digital conversion, simple in construction.
As it was previously stated, the calculating of amount is fairly simple in both direction, it is only necessary to simple parallelogram law, without complicated algorithm, response speed also ratio is comparatively fast.
Namely output after quantization show as the incline direction of center bore 32, thus embodying more intuitively, and is conducive to the adjustment of operator.
Output can be simple analog output, uses simple liquid crystal display screen, outbound course angle.
Although it is not the precision of resistance strain gage 18 is significantly high, but in the application of total station tripod, required precision is exactly accurate, it is therefore preferable that adopt the circuit structure of simple in construction, configured ground, four sheet resistance foil gauges 18 constitute parallel circuit；
Correspondingly, described sampling drive circuit includes the power circuit of described parallel circuit and each branch road of parallel circuit is carried out the current sensor of current sample, connects the controller with analog input interface of described current sensor, to produce the variable of resistance variations.
Preferably; described auxiliary section is positive four bank or ridge, as shown in Figure 5, then in this structure; the degree of freedom that spherical hinge rotates around center bore 32 axis is suppressed; thus the weight 44 as shown in Fig. 5 lower end, the direction of the locking hole 45 preset just is determined, thus; under portable state; in advance weight 44 can be locked, it is to avoid resistance strain gage 18 is produced the impact of fatigability, with protective resistance foil gauge 18.
Specifically, described weight 44 is provided with locking hole 45, accordingly, is provided with side opening at protection set 2 corresponding to the position of locking hole 45, for coordinating, by screw and locking hole 25, the locking realizing weight 44 under portable state.
With this understanding, described axial hole is square hole, the gap of the annular gap side of being annular.
And then, in this structure, the placement surface of resistance strain gage 17 is plane, it is easy to complete the installation of resistance strain gage 18.
About the agent structure of total station tripod, the set square 31 that it has three supporting legs 34 and three supporting legs 34 support, three supporting legs 34 are connected with set square 31 by hinge.The center bore 32 that set square 31 is provided with in described center bore 32, figure is screwed hole.
The threaded precision that belongs to connects, and in Fig. 3, the upper end in seat portion 1 has center screw thread 11, and center screw thread 11 screws realization and reliably and is accurately connected with described center bore 32.
Preferably, as in figure 2 it is shown, the lower surface that the pedestal 13 of the downside of described center screw thread 11 is provided with the spacing ring 12 that center screw thread 11 is upwards retrained, the upper surface of spacing ring 12 and set square 31 can form good contact, forming aspectant joint, being accurately positioned thus being more prone to formation.
Additionally, as it is shown on figure 3, the lower end of described pedestal 13 has one section connects external screw thread 14, correspondingly, in described protection set 2 upper ends, pipe has and is connected, with described, the connection female thread 21 that external screw thread 14 screws, and produces attachment structure as shown in Figure 1.
The external diameter of protection set 2 is identical with the external diameter of pedestal 13, and aesthetic property is relatively better, and is not easy to produce to interfere, thus portable state is better.
Claims (10)
1. a total station tripod, including support body (3), this support body (3) top includes the set square (31) being provided with center bore (32), it is characterised in that also include:
Seat portion (1), is had and is connected to center bore (32) lower end the pedestal (13) with center bore (32) coaxial line by center screw thread (11)；The lower end of this pedestal (13) is provided with the ball-and-socket (15) of spherical hinge, and it is connected to the support (16) with axial hole at the lower end periphery of pedestal (13), wherein axial hole is positioned at the lower section of ball-and-socket (15), and with center bore (32) coaxial line；
Centering assembly (4), this centering assembly (4) includes coordinating with described ball-and-socket (15) bulb (41) to form spherical hinge, is connected to bulb (41) the auxiliary section downwardly extending and coordinating with described axial hole, and is connected to lower end, auxiliary section and extends further downward to connect the connecting rod (43) of weight (44)；Wherein form annular gap between auxiliary section and axial hole；
Resistance strain gage (18), totally four, and annular array is in the circumference of described annular gap, and the gap width that thickness is annular gap of this resistance strain gage of the radial direction in axial hole (18)；
Sampling drive circuit, connects above-mentioned four sheet resistance foil gauges (18), it is provided that drives power supply the resistance variations of sampling resistor foil gauge (18), generates variable；
Process circuit, connect described sampling drive circuit, the variable sampled is processed, produce the incline direction at center bore (32)；
Output circuit, output is to present described incline direction；
Protection set (2), is connected to subordinate's end, and this protection set (2) is tubular body, is used for holding described centering assembly (4) in pipe, and by the hard-over of tube wall constraint centering assembly (4).
2. total station tripod according to claim 1, it is characterised in that four sheet resistance foil gauges (18) constitute parallel circuit；
Correspondingly, described sampling drive circuit includes the power circuit of described parallel circuit and each branch road of parallel circuit is carried out the current sensor of current sample, connects the controller with analog input interface of described current sensor, to produce the variable of resistance variations.
3. total station tripod according to claim 1 and 2, it is characterised in that described auxiliary section is positive four bank or ridge, correspondingly, described axial hole is square hole, the annular gap side of being annular.
4. total station tripod according to claim 3; it is characterized in that; the side of described weight (44) is provided with locking hole (45); accordingly; it is provided with side opening corresponding to the position of locking hole (45), for coordinating, by screw and locking hole (45), the locking realizing weight (44) under portable state in protection set (2).
5. total station tripod according to claim 1, it is characterised in that 0.5 degree, described hard-over position.
6. total station tripod according to claim 5, it is characterised in that the length of described connecting rod (43) is not less than 30cm, and is not more than 50cm.
7. total station tripod according to claim 1, it is characterized in that, it is characterised in that described center bore (32) is screwed hole, correspondingly, the upper end of described seat portion (1) has the center screw thread (11) screwed with center bore (32).
8. total station tripod according to claim 7, it is characterised in that the pedestal (13) of the downside at described center screw thread (11) is provided with the spacing ring (12) that center screw thread (11) is upwards retrained.
9. total station tripod according to claim 1, it is characterised in that described set square (31) is provided with level(l)ing bubble (33).
10. total station tripod according to claim 1; it is characterized in that; the lower end of described pedestal (13) has one section and connects external screw thread (14); correspondingly, in described protection set (2) upper end, pipe has and is connected, with described, the connection female thread (21) that external screw thread (14) screws；
The external diameter of protection set (2) is identical with the external diameter of pedestal (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610326304.6A CN105782673B (en) | 2016-05-17 | 2016-05-17 | Total station tripod |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610326304.6A CN105782673B (en) | 2016-05-17 | 2016-05-17 | Total station tripod |
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| CN105782673A true CN105782673A (en) | 2016-07-20 |
| CN105782673B CN105782673B (en) | 2017-11-24 |
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| CN102679965A (en) * | 2012-05-29 | 2012-09-19 | 葛洲坝集团第五工程有限公司 | Height-adjustable cross laser level |
| CN204405068U (en) * | 2015-02-13 | 2015-06-17 | 滨州学院 | Total station prism |
| CN104964140A (en) * | 2015-07-28 | 2015-10-07 | 芜湖科创生产力促进中心有限责任公司 | Three-dimensional pressure detection based tripod device |
| CN105202329A (en) * | 2015-09-19 | 2015-12-30 | 桂林理工大学 | Rapid centering and leveling bracket for tacheometry |
| CN105333866A (en) * | 2015-11-27 | 2016-02-17 | 中船黄埔文冲船舶有限公司 | Laser level locator |
| US20160076885A1 (en) * | 2014-09-17 | 2016-03-17 | Kabushiki Kaisha Topcon | Surveying Instrument And Method To Install Surveying Instrument |
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2016
- 2016-05-17 CN CN201610326304.6A patent/CN105782673B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679965A (en) * | 2012-05-29 | 2012-09-19 | 葛洲坝集团第五工程有限公司 | Height-adjustable cross laser level |
| US20160076885A1 (en) * | 2014-09-17 | 2016-03-17 | Kabushiki Kaisha Topcon | Surveying Instrument And Method To Install Surveying Instrument |
| CN204405068U (en) * | 2015-02-13 | 2015-06-17 | 滨州学院 | Total station prism |
| CN104964140A (en) * | 2015-07-28 | 2015-10-07 | 芜湖科创生产力促进中心有限责任公司 | Three-dimensional pressure detection based tripod device |
| CN105202329A (en) * | 2015-09-19 | 2015-12-30 | 桂林理工大学 | Rapid centering and leveling bracket for tacheometry |
| CN105333866A (en) * | 2015-11-27 | 2016-02-17 | 中船黄埔文冲船舶有限公司 | Laser level locator |
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| CN105782673B (en) | 2017-11-24 |
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Effective date of registration: 20201224 Address after: 274900 Industrial Park, Tianzhuang Town, Juye County, Heze City, Shandong Province (South s254 Road East, Nanyu Village) Patentee after: Linzhou (Juye) Incubator Co.,Ltd. Address before: 256600 Binzhou University, 391 the Yellow River five road, Bincheng District, Binzhou, Shandong Patentee before: BINZHOU University |
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