A kind of self-alignment double laser level altimeter
Technical field
The invention belongs to laser measurement field, be specifically related to a kind of self-alignment double laser level altimeter.
Background technology
National economy is a lot of for the measurement demand of height in producing, and arrives greatly geological exploration, building height measurement or mountain range relative height and measures, and can be called geographical survey high; Little of height detection, Mechanical Parts Size check etc., can be called object and survey high.
Measuring method or instrument about height have had a lot, and on the building site of some construction projects, it is transit that technician carries out the instrument that geographical survey high workload uses.Transit is made up of telescope, horizontal dial, altitude circle, level, pedestal etc.When measurement, transit is placed on tripod, with plumb bob or optical plummet, centre is aimed to ground survey station point upper, instrument is allocated with level, use collimation telescope measurement target, with horizontal dial and altitude circle mensuration horizontal angle and vertical angle.
Carrying out object survey height is mainly height gauge, is to be positioned over the instrument that carries out single shaft measurement on platform, and ideal situation is granite platform.Also having a kind of is laser range finder based on principle of triangulation, by the measurement of relevant inclination angle and auxiliary distance value is realized to the measurement to object height indirectly.To be 201010256289.5 patent measure the elevation angle while observing testee peak by the angle gauge on altimeter to application number, then measures the horizontal range of testee peak to observation station, thereby realizes highly measurement by triangle relation.
Comprehensive above-described altimeter device and method, exist following not enough:
1, due to measuring principle difference, range difference, measuring accuracy grade difference, existing altimeter device is all specialized equipment, can not take into account geographical survey height and object and survey high.
2, existing altimeter device, measuring accuracy depends on the levelness of measurement datum, and surveying instrument need to be placed on stable, smooth reference surface, and general dependence of the measurement of levelness carries or outside air-bubble level, horizontal detection precision is not high, regulates inconvenient.
3, existing altimeter device, for the height of the characteristic portions such as groove, hole on the part such as die, die cavity, because probe is difficult to stretch into, cannot measure.
4, the measuring process of transit needs multiple person cooperational, complicated operation; The measuring process of height gauge is contact type measurement, and very large with operator's empirical relationship, the repeatability of measurement result is poor.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of self-alignment double laser level altimeter simple to operation is provided; This self-alignment double laser level altimeter is aimed at and magnetic plummet mechanism by photoelectricity, makes the levelness of self regulate very convenient, accurately reliable; Unrestricted to testee size, geographical survey height and object survey can be taken into account high, and the position that the conventional levels altimeters such as various grooves, hole cannot be measured can be measured; Because it is based on optical measurement principle, single can operation can be measured under various light environments, and measuring accuracy is higher than existing level altimeter.
The present invention is achieved through the following technical solutions:
A kind of self-alignment double laser level altimeter, comprises pedestal, multiple adjustable seat leg, sill, middle cross beam, entablature, vertical rule, horizontal laser light stadimeter, vertical generating laser, 45 degree semi-transparent semi-reflecting lens, 45 degree catoptrons, hangs draw ring, center of gravity regulating block, sill driving mechanism and middle cross beam driving mechanism;
The upper and lower surface of described pedestal is all parallel with surface level, and multiple adjustable seat legs are fixedly mounted on the lower surface of pedestal, for height and the levelness of adjusting base;
Described center of gravity regulating block is connected with the lower surface of pedestal by magnetic attraction, and the relative position of center of gravity regulating block and pedestal can regulate arbitrarily manually or automatically;
Described vertical rule is vertically arranged on pedestal, and it is marked with scale, for measuring sill and the middle cross beam difference in height with respect to pedestal upper surface;
Described sill and middle cross beam are and are horizontally disposed with, that is vertical with vertical gravity direction, and described sill is arranged on pedestal by sill driving mechanism, and can drive vertical direction to move up and down by sill driving mechanism; Described middle cross beam is arranged on pedestal by middle cross beam driving mechanism, and can drive vertical direction to move up and down by middle cross beam driving mechanism;
Described horizontal laser light stadimeter and 45 degree semi-transparent semi-reflecting lens are all fixedly mounted on sill, its installation position should make the laser beam along continuous straight runs of horizontal laser light stadimeter transmitting incide 45 degree semi-transparent semi-reflecting lens, after turnover through 45 degree semi-transparent semi-reflecting lens, vertically enter 45 degree catoptrons; Described 45 degree catoptrons are arranged on middle cross beam by an angle rotating mechanism, and described angle rotating mechanism can regulate 45 minute surfaces of degree catoptron and the angle of surface level in the scope of degree to degree;
The horizontal reverse of described horizontal laser light stadimeter transmitting to a laser beam part reflect through 45 degree semi-transparent semi-reflecting lens, another part is through 45 degree semi-transparent semi-reflecting lens transmissions; Reflection lasering beam impinges perpendicularly on 45 degree catoptrons, after 45 degree catoptron turnovers, exports target measurement point to; Transmission laser bundle glancing incidence is to object under test;
Described entablature supports and is arranged on pedestal, and is positioned at the top of middle cross beam, described in hang draw ring and be fixedly connected on the upper surface of entablature, while measurement for hanging, use; Described vertical generating laser is connected to the inside surface of entablature by flexible lanyard; On described sill and middle cross beam, be provided with beam orifice, the upper surface of pedestal is provided with target center; The locus of described vertical generating laser, beam orifice and target center should make the laser beam of the naturally vertical sagging time output of vertical generating laser, successively through two beam orifices and drop on the target center of pedestal.
Preferably, described sill driving mechanism and middle cross beam driving mechanism are separately positioned on the both sides of pedestal;
Described sill driving mechanism comprises the first guide pillar, the first rocking bar, the first worm gear, the first worm screw, the first leading screw and the first screw slider, and described middle cross beam driving mechanism comprises the second guide pillar, the second rocking bar, the second worm gear, the second worm screw, the second leading screw and the first screw slider;
The first guide pillar is vertically arranged on the left side of pedestal, and the second guide pillar is vertically arranged on the right side of pedestal; The left and right sides of described sill is fastenedly connected with two sliding blocks respectively, two sliding blocks being arranged on the first guide pillar and the second guide pillar of slip respectively; The left and right sides of described middle cross beam is fastenedly connected with two top shoes respectively, two top shoes being arranged on the first guide pillar and the second guide pillar of slip respectively;
The first rocking bar is connected with the first worm screw, for driving the first worm screw to rotate; Described the first worm gear and the first worm screw composition Worm and worm-wheel gearing, described the first worm gear set is contained in one end of the first leading screw, and with the first lead screw linkage, the first screw slider screws in the first leading screw; The sliding block in the first screw slider and left side is fixed together, and the top shoe inside in left side is provided with a through hole, and the first leading screw passes after the through hole on the top shoe in left side, is arranged on the first guide pillar by bearing;
The second rocking bar is connected with the second worm screw, for driving the second worm screw to rotate; Described the second worm gear and the second worm screw composition Worm and worm-wheel gearing, described the second worm gear set is contained in two ends of the second leading screw, with the second lead screw linkage; The second screw slider screws in the second leading screw; The top shoe on the second screw slider and right side is fixed together, and the sliding block inside on right side is provided with a through hole, and the second leading screw passes the through hole on the sliding block on right side, and is arranged on the second guide pillar by bearing.
Preferably, described angle rotating mechanism comprises fixed head, swivel mount, Digit Display Angle Ruler, arc chute, traveller and locking member, and described fixed head and arc chute are all fixedly mounted on middle cross beam, and described 45 degree catoptrons are arranged on swivel mount;
Described swivel mount is connected with fixed head by articulated manner, and swivel mount can be rotated around pin joint, and its center of rotation axis is parallel with surface level; Described Digit Display Angle Ruler is arranged between fixed head and swivel mount, for measuring and show the corner of described swivel mount;
Described traveller is fixedly mounted on the upper end, side of swivel mount, and through arc chute, is connected with locking member; The installation site of described arc chute and chute length should make 45 minute surfaces of degree catoptron and the angle of surface level in the scope of degree to degree, to regulate.
Preferably, the lower surface of described pedestal is provided with magnetic sheet, is fixedly connected with a magnetic block on center of gravity regulating block, realizes being connected of center of gravity regulating block and pedestal by magnetic sheet and the suction of magnetic block.
The present invention has following beneficial effect:
1, self-alignment double laser level altimeter of the present invention, adopt the laser beam of directivity and centrality fabulous (angle of divergence is minimum) as measuring sonde, and bevel protractor is at the long amplification apart from the diagonal angle length of side in situation, can according to the size of testee select flexibly hyperplastic distance from, make it unrestricted to measuring distance and testee height, can take into account geographical survey height and object survey high, a tractor serves several purposes.
2, self-alignment double laser level altimeter of the present invention, carry the levelness testing agency based on photoelectricity alignment principles, there are magnetic plummet Level tune (using when suspension type is measured) and burr adjustable tail margin Level tune (using when ground placed type is measured) two kinds of regulative modes and mechanisms simultaneously, it passes successively two transmission apertures and drops on the target center on pedestal according to the laser beam that vertically generating laser sends, be to mix up for level, the method has utilized gravity direction as absolute scale, more accurate than traditional air-bubble level.
3, self-alignment double laser level altimeter of the present invention, utilizes the laser beam of machinery-free contact as measuring sonde, and light beam can reach and can survey, thereby can measure the position that the conventional levels altimeters such as various grooves, hole cannot be measured.
4, the present invention supports two kinds of use-patterns: the one, and level is put use, regulates four seat legs to make device level; Another kind is vertically to hang and use, and catches on and hangs draw ring with hook, and the position of the center of gravity regulating block under adjusting base makes device level.Can select flexibly any one according to test site space constraint condition, datum water level restrictive condition, practicality is very strong.
5, the present invention is based on self luminous visible laser Shu Jinhang measures, to ambient light no requirement (NR), be applicable to the various test environments such as dark, bright, zang light, only need select as required suitable measurement laser beam wavelength (color), applicability is very extensive.
6, self-alignment double laser level altimeter of the present invention, single can operation, need not cooperate, non-contact measurement reproducible.
7, simple in structure, the easy accessibility of the present invention, be easy to safeguard that and small volume and less weight is easy to carry about with one.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of self-alignment double laser level altimeter of the present invention;
Fig. 2 is a kind of preferred structure figure of self-alignment double laser level altimeter of the present invention;
Fig. 3 is the structural drawing one of sill driving mechanism and middle cross beam driving mechanism;
Fig. 4 is the structural drawing two of sill driving mechanism and middle cross beam driving mechanism;
Fig. 5 is the structural drawing of angle rotating mechanism;
Fig. 6 is measuring principle figure;
In figure, the implication of each label is as follows:
Pedestal 1, adjustable seat leg 2, sill 3, middle cross beam 4, entablature 5, vertically rule 6, horizontal laser light stadimeter 7, vertically generating laser 8, 45 degree semi-transparent semi-reflecting lens 9, 45 degree catoptrons 10, hang draw ring 11, center of gravity regulating block 12, sill driving mechanism 13, middle cross beam driving mechanism 14, beam orifice 15, target center 16, magnetic block 17, flexible lanyard 18, laser beam 20, fixed head 21, swivel mount 22, arc chute 24, traveller 25, locking member 26, the first guide pillar 31, the first rocking bar 32, the first worm gear 33, the first worm screw 34, the first leading screw 35, the first screw slider 36, sliding block 37, the second guide pillar 41, the second rocking bar 42, the second worm gear 43, the second worm screw 44, the second leading screw 45, the first screw slider 46, top shoe 47.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As Figure 1-5, the invention provides a kind of self-alignment double laser level altimeter, comprise pedestal 1, multiple adjustable seat leg 2, sill 3, middle cross beam 4, entablature 5, vertical rule 6, horizontal laser light stadimeter 7, vertical generating laser 8,45 degree semi-transparent semi-reflecting lens 9,45 degree catoptrons 10, hang draw ring 11, center of gravity regulating block 12, sill driving mechanism 13 and middle cross beam driving mechanism 14:
The upper and lower surface of described pedestal 1 is all parallel with surface level, and multiple adjustable seat legs 2 are fixedly mounted on the lower surface of pedestal 1, for height and the levelness of adjusting base 1;
Described center of gravity regulating block 12 is connected with the lower surface of pedestal 1 by magnetic attraction, and center of gravity regulating block 12 can regulate arbitrarily manually or automatically with the relative position of pedestal 1; The structure adopting in the present embodiment is: the lower surface of described pedestal 1 is provided with magnetic sheet, is fixedly connected with a magnetic block 17 on center of gravity regulating block 12, realizes being connected of center of gravity regulating block 12 and pedestal 1 by magnetic sheet and the suction of magnetic block 17.Certainly can also adopt other structures, such as magnet flat board is installed on pedestal lower surface, center of gravity regulating block is magnetic material; Or the material of pedestal own is magnetic material, center of gravity regulating block is magnet.
Described vertical rule 6 is vertically arranged on pedestal 1, and it is marked with scale, for measuring sill 3 and the difference in height of middle cross beam 4 with respect to pedestal 1 upper surface;
Described sill 3 is and is horizontally disposed with middle cross beam 4, that is vertical with vertical gravity direction, and described sill 3 is arranged on pedestal 1 by sill driving mechanism 13, and can be driven and be done moving up and down of vertical gravity direction by sill driving mechanism 13; Described middle cross beam 4 is arranged on pedestal 1 by middle cross beam driving mechanism 14, and can be driven and be done moving up and down of vertical gravity direction by middle cross beam driving mechanism 14;
Described horizontal laser light stadimeter 7 and 45 degree semi-transparent semi-reflecting lens 9 are all fixedly mounted on sill 3, its installation position should make laser beam 20 along continuous straight runs that horizontal laser light stadimeter 7 is launched incide 45 degree semi-transparent semi-reflecting lens 9, after turnover through 45 degree semi-transparent semi-reflecting lens 9, enter to inject 45 degree catoptrons 10 along vertical gravity direction vertically upward; Described 45 degree catoptrons 10 are arranged on middle cross beam 4 by an angle rotating mechanism, and described angle rotating mechanism can regulate at 45 degree 45 minute surfaces of degree catoptron 10 and the angle of surface level in the scope of 90 degree;
The horizontal reverse that described horizontal laser light stadimeter 7 is launched to laser beam 20 parts reflect through 45 degree semi-transparent semi-reflecting lens 9, another part is through 45 degree semi-transparent semi-reflecting lens 9 transmissions; Reflection lasering beam impinges perpendicularly on 45 degree catoptrons 10, after 45 degree catoptron 10 turnovers, exports target measurement point to; Transmission laser bundle glancing incidence is to object under test;
Described entablature 5 supports and is arranged on pedestal 1, and is positioned at the top of middle cross beam 4, described in hang draw ring 11 and be fixedly connected on the upper surface of entablature 5, while measurement for hanging, use; Described vertical generating laser 8 is connected to the inside surface of entablature 5 by flexible lanyard 18; On described sill 3 and middle cross beam 4, be provided with beam orifice 15, the upper surface of pedestal 1 is provided with target center 16; The locus of described vertical generating laser 8, beam orifice 15 and target center 16 should make the laser beam of the naturally vertical sagging time output of vertical generating laser 8, advances, successively through two beam orifices 15 and drop on the target center 16 of pedestal 1 along vertical gravity direction.
Described sill driving mechanism 13 and middle cross beam driving mechanism 14 are separately positioned on the both sides of pedestal 1, their a kind of preferred structure is: described sill driving mechanism 13 comprises the first guide pillar 31, the first rocking bar 32, the first worm gear 33, the first worm screw 34, the first leading screw 35 and the first screw slider 36, and described middle cross beam driving mechanism 14 comprises the second guide pillar 41, the second rocking bar 42, the second worm gear 43, the second worm screw 44, the second leading screw 45 and the first screw slider 46.
The first guide pillar 31 is vertically arranged on the left side of pedestal 1, and the second guide pillar 41 is vertically arranged on the right side of pedestal 1.The left and right sides of described sill 3 is fastenedly connected with two sliding blocks 37 respectively, two sliding blocks 37 being arranged on the first guide pillar 31 and the second guide pillar 41 of slip respectively.The left and right sides of described middle cross beam 4 is fastenedly connected with two top shoes 47 respectively, two top shoes 47 being arranged on the first guide pillar 31 and the second guide pillar 41 of slip respectively.
The first rocking bar 32 is connected with the first worm screw 34, for driving the first worm screw 34 to rotate; Described the first worm gear 33 and the first worm screw 34 form Worm and worm-wheel gearing, and described the first worm gear 33 is sleeved on one end of the first leading screw 35, link with the first leading screw 35, and the first screw slider 36 screws in the first leading screw 35.The first screw slider 36 is fixed together with the sliding block 37 in left side, and top shoe 47 inside in left side are provided with a through hole, after the through hole that the first leading screw 35 passes on the top shoe 47 in left side, is arranged on the first guide pillar 31 by bearing.
The second rocking bar 42 is connected with the second worm screw 44, for driving the second worm screw 44 to rotate; Described the second worm gear 43 and the second worm screw 44 form Worm and worm-wheel gearing, and described the second worm gear 43 is sleeved on two ends of the second leading screw 45, link with the second leading screw 45; The second screw slider 46 screws in the second leading screw 45.The second screw slider 46 is fixed together with the top shoe 47 on right side, and sliding block 37 inside on right side are provided with a through hole, the through hole that the second leading screw 45 passes on the sliding block 37 on right side, and be arranged on the second guide pillar 41 by bearing.
A kind of preferred structure of described angle rotating mechanism is: comprise fixed head 21, swivel mount 22, Digit Display Angle Ruler 23, arc chute 24, traveller 25 and locking member 26, described fixed head 21 and arc chute 24 are all fixedly mounted on middle cross beam 4, and described 45 degree catoptrons 10 are arranged on swivel mount 22;
Described swivel mount 22 is connected with fixed head 21 by articulated manner, and swivel mount 22 can be rotated around pin joint, and its center of rotation axis is parallel with surface level; Described Digit Display Angle Ruler is arranged between fixed head 21 and swivel mount 22, for measuring and show the corner of described swivel mount 22;
Described traveller 25 is fixedly mounted on the upper end, side of swivel mount 22, and through arc chute 24, is connected with locking member 26; The installation site of described arc chute 24 and chute length should make 45 minute surfaces of degree catoptron 10 and the angle of surface level in the scope of 90 degree, to regulate at 45 degree.
The step that adopts above-mentioned self-alignment double laser level altimeter to carry out highly measuring comprises following two steps:
The first step, laying of self-alignment double laser level altimeter, specific as follows:
According to measurement environment and measuring condition situation, there are two kinds to lay mode.
Mode one, if measurement space license, and there is good reference plane, self-alignment double laser level altimeter can be placed on reference plane, regulate multiple adjustable seat legs 2, make the height of adjusting base 1 suitable (the horizontal laser light stadimeter 7 measurement laser beam of launching just in time glancing incidence to the reference point to be measured in measurand, be the C point in Fig. 6), and make the levelness of self-alignment double laser level altimeter meet measuring accuracy requirement, it is the laser beam of the naturally vertical sagging time output of vertical generating laser 8, advance along vertical gravity direction, pass successively two beam orifices 15 and drop on the target center 16 of pedestal 1,
Mode two, if there is no good reference plane, self-alignment double laser level altimeter can be fixed on external stabilization structure through hanging draw ring 11 suspensions with flexible rope, then regulate the length of flexible rope and the relative position of swerve the weight regulating block 12 and pedestal 1, make the height of adjusting base 1 suitable (the horizontal laser light stadimeter 7 measurement laser beam of launching just in time glancing incidence to the reference point to be measured in measurand, be the C point in Fig. 6), and make the levelness of self-alignment double laser level altimeter meet measuring accuracy requirement, it is the laser beam of the naturally vertical sagging time output of vertical generating laser 8, advance along vertical gravity direction, pass successively two beam orifices 15 and drop on the target center 16 of pedestal 1.
Second step, measures and calculates, specific as follows:
Open horizontal laser range finder 7, horizontal laser light stadimeter 7 is launched measurement laser beam, and record its launch time of t1, measure laser beam and incide the D point on 45 degree semi-transparent semi-reflecting lens 9 by E point along continuous straight runs, to be divided into two bundles in this laser beam is transmission laser bundle and reflection lasering beam, wherein transmission laser bundle glancing incidence is to the C point in measurand, suppose C point place non-specular surface (actual measurand does not generally have mirror-reflection feature), so from geometrical optics and physical optics knowledge, the bundle light that returns of measurand C point place's scattering always has certain proportion Jiang Yanyuan road to return, and received by the optical detection device of horizontal laser light stadimeter 7, record its time of reception t2, simultaneously, the reflection lasering beam at D point place is injected into turnover 90 degree directions at the B point place of 45 degree catoptrons 10, according to the angle of the vertical position of the middle cross beam 4 regulating in advance and 45 degree catoptrons 10 (as shown in Figure 6, the fore-and-aft distance that mark 45 is spent between the central axis of catoptron 10 and laser beam that horizontal laser light stadimeter 7 is launched is H1, angle between light direction and the surface level of 45 degree catoptrons 10 is alpha), can make just in time to arrive target measurement point A place by the laser beam of B point reflection, suppose A point place non-specular surface (actual measurand does not generally have mirror-reflection feature), so from geometrical optics and physical optics knowledge, the bundle light that returns of measurand A point place's scattering always has certain proportion Jiang Yanyuan road to return, and received by the optical detection device of horizontal laser light stadimeter 7, record its time of reception t3.
If the light velocity is Vc, between AB, distance is L3, between CD, distance is L1, between DE, distance is d (that is distance between horizontal laser light stadimeter 7 and 45 degree semi-transparent semi-reflecting lens 9, according to the two installation position relation, d is default known numeric value), according to light path computing formula, have following relational expression to set up:
L3=Vc*(t3-t1)-H-d
L1=Vc*(t2-t1)-d
So, the calculating of the height value H of measurand (that is AC order vertical range) has following two kinds of modes:
Mode one, if the lateral dimension of measurand (that is AC order horizontal range) L2 adopts other modes to measure known (meet most of objects and survey high situation), the computing formula of H is:
H=H1+H2=H1+L*tg(alpha)=H1+(L1+L2)*tg(alpha)
Mode two, if the lateral dimension of measurand (that is AC order horizontal range) L2 is difficult to measure (meeting most of geographical high situations of surveying), the computing formula of H is:
H=H1+H2=H1+L3*sin(alpha)
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All so apparent modifications of the technician to described field, within being included in the scope of this claim.