CN2893648Y

CN2893648Y - Laser automatic levelling instrument

Info

Publication number: CN2893648Y
Application number: CN 200520092795
Authority: CN
Inventors: 许敩诚; 刘洪云
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-27
Filing date: 2005-09-27
Publication date: 2007-04-25
Anticipated expiration: 2015-09-27

Abstract

The utility model relates to a level gauge, a laser auto-leveling level gauge. A laser is provided on the upper part within the eyepiece sleeve, hereunder is eyepiece group. The eyepiece sleeve is in an objective tube, wherein are an objective lens and a diaphragm. The eyepiece group and the objective lens form a spatial phase modulator. Under the objective tube is a liquid optical wedge automatic compensator. The objective tube is connected to a turntable via a shaft coupling. Under the compensator and above the turntable are a penta prism base and a penta prism. The turntable can be rotatably positioned on the pellet, which is positioned on the base plate by screwing. Compared with the current technology, the utility model has the advantage: automatic provision of the laser beam with cascade-ring character in leveling accuracy. The gauge has simple structure, moderate price, high reliability, portable and easy usage, and is applicable to deformation observation for large construction engineering projects, the installation and approval of large production lines and equipment, providing highly accurate level base lines.

Description

The Laser Beam Auto-Level instrument

Technical field:

The leveling instrument that the utility model relates to engineering construction, plant equipment is installed and detection etc. uses.

Background technology:

The spirit-leveling instrument kind of producing at present and using is a lot, and wherein optical level mainly all has the self leveling device, and precision turnout on the low side is big, is mainly used in building engineering construction.Laser level is based on scanner, and what self leveling was arranged also has a long bubble, and precision is also lower, is mainly used in fitting-out work and smooth place.High-precision optical level of less types is mainly used in deformation observation, and the self leveling device is arranged, and its compensation system major part is that vernier is hung prism or whole gravity hangs, because the influence that is rubbed influences the further raising of accuracy of instrument.

Along with the scale increase of many construction works, the modification observation of building (as important buildings such as dams), the installation of large-scale production line and equipment (as the guide rail of large-sized numerical control machining center) requires to provide high-precision horizontal datum.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned not enough problem, and a kind of Laser Beam Auto-Level instrument is provided, and is simple in structure, the measuring accuracy height, and good reliability, easy to use.

The technical scheme that the utility model is adopted for achieving the above object is: the Laser Beam Auto-Level instrument, top in the eyepiece stalk is provided with laser instrument, the eyepiece group is arranged at the bottom of eyepiece stalk, eyepiece stalk places in the objective tube, object lens and Guang Lan are equipped with in the lower end of objective tube, eyepiece group and object lens constitute the space bit phase modulation jointly, the liquid wedge automatic compensator also is equipped with in the lower end of objective tube, objective tube links to each other with rotating disk by connecting shaft, pentaprism seat and pentaprism also are equipped with in the below of compensator above the rotating disk, rotating disk is rotatable to be installed on the pallet, and pallet is contained on the chassis by spiral.

The screw of radially adjusting that can make trace to the relative object lens of eyepiece group is equipped with on described objective holder top.

Be equipped with on the described prism table the common two wedges formed of little wedge are housed on big wedge and the instrument outlet window.

The garden bubble also is equipped with at the top of described instrument.

The utility model compared with prior art has following advantage: can provide high-level precision to have the laser beam of ring Shan Tezheng automatically.Simple in structure, moderate cost, the reliability height, easy to use and carry, can be used for the large-scale construction engineering deformation observation, the installation of large-scale production line and production equipment, examination provide high-precision horizontal datum.

Description of drawings:

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is a course of work synoptic diagram of the present utility model.

Embodiment:

Laser Beam Auto-Level instrument as shown in Figure 1, eyepiece stalk 2 internal upper parts have been fixed semiconductor laser 1, eyepiece component 3 is arranged at the bottom of eyepiece stalk, eyepiece stalk 2 places in the upper end of objective tube 4, object lens 5 and light hurdle 6 are equipped with in the inboard bottom of objective tube 4, by eyepiece component 3, the space bit phase modulation has been formed on object lens 5 and light hurdle 6, this space bit phase modulation is a prior art, in the patent No. is that clearly record is arranged in 97225486.2 patent specifications, be not described in detail in this, eyepiece 2 relatively-stationary object lens 5 and light hurdle 6 can move forward and backward, regulate so that the energy distribution that acquisition is best on the xsect of laser beam obtains to encircle coral clearly by front and back, promptly finish the regulatory function of space bit phase modulation.Can do moving radially of trace to eyepiece group 3 relative phase objectives 5 by the screw 19 on objective lens 4 tops simultaneously, enter the incident angle of liquid wedge automatic compensator with adjustment, thereby reach the purpose of adjusting the instrument horizontal accuracy.The liquid wedge automatic compensator also is equipped with in the lower end of objective tube 4, and it is by compensator housing 7, and flat mirror 8 and compensation liquid 9 are formed.The upper surface of compensation liquid is that Free Surface is a surface level, and it is the reference field of this instrument.The angle of wedge of this two-layer liquid lens is that the mechanical axis of instrument is different with the angle of theoretical vertical line and changing at ordinary times along with the instrument initialization.They have following feature: when the refraction coefficient sum of two-layer liquid is " 3 ", how many angles (low-angle) of the first horizontalization of instrument is no matter is, from the laser beam that two-layer liquid wedge is gone out the earth's core is pointed in strictness, error is " 0 " in theory, just can realize full remuneration, this point is that any automatic compensation by the physical construction realization is incomparable.The liquid wedge automatic compensator is a prior art, in the patent No. is that clearly record is arranged in 95231114.3 patent specifications, be not described in detail in this, objective tube 4 links to each other with rotating disk 13 by connecting shaft 10, pentaprism seat 12 and pentaprism 11 also are equipped with in the below of compensator above the rotating disk 13, the laser beam that has ring Shan Tezheng is from top to bottom changeed 90 ° and is become horizontality to penetrate through pentaprism 11.Rotating disk 13 can be done 360 ° rotation on pallet 14, can coarse adjustment also can finely tune.Pallet 14 is contained on the chassis 16 by three double helix 15.Big wedge 17 being housed on the prism table 12 and on instrument outlet window, little wedge 18 being housed, form small one and large one two wedges.Wherein big wedge 17 is mainly used to revise the mismachining tolerance of pentaprism 11, and little wedge 18 is used for adjusting the drift value of instrument.Garden bubble 20 also is equipped with at the top of instrument, is used for to instrument initialization to use at ordinary times.

The utility model is being used for installation work (as production line) when installing, can be by shown in Figure 2.Prop up on the center line of production line 22 1 ends with a tripod, then the utility model is fixed on the tripod 21, open the lid on the outlet window,, promptly have laser beam to penetrate the switch opens of instrument.Earlier light target is placed near on the center line of instrument one end, adjust the position of tripod and the position angle of height and instrument, make laser beam aim at the center of one dimension micrometer light target, then light target is moved on on the center line of the other end one far-end of production line, the position angle of adjusting instrument makes laser beam aim at the center that one dimension is surveyed laser target, also will check the position of a near-end at last with light target.Behind the center line basically identical of laser beam and production line, then one dimension micrometer light target is placed the diverse location of production line, just can measure the horizontal situation of whole production line by the reading of micrometer light target.When the utility model is used for deformation observation of structure, at first provide horizontal datum by the utility model, place the observed object of the special setting on the buildings to detect the level height difference of itself and laser beam with light target then, place on record, continuous measurement through different time just can obtain unequal settlement of building and distortion situation.

Claims

1, a kind of Laser Beam Auto-Level instrument, it is characterized in that: the top in the eyepiece stalk (2) is provided with laser instrument (1), eyepiece group (3) is arranged at the bottom of eyepiece stalk (2), eyepiece stalk (2) places in the objective tube (4), object lens (5) He Guanglan (6) are equipped with in the lower end of objective tube (4), eyepiece group (3) and object lens (5) constitute the space bit phase modulation jointly, the liquid wedge automatic compensator also is equipped with in the lower end of objective tube (4), objective tube links to each other with rotating disk (13) by connecting shaft (10), pentaprism seat (12) and pentaprism (11) also are equipped with in the below of compensator above the rotating disk (13), rotating disk (13) is rotatable to be installed on the pallet (14), and pallet (14) is contained on the chassis (16) by three double helix (15).

2, Laser Beam Auto-Level instrument according to claim 1 is characterized in that: the screw of radially adjusting (19) that can make trace to the relative object lens (5) of eyepiece group (3) is equipped with on objective tube (4) top.

3, Laser Beam Auto-Level instrument according to claim 1 is characterized in that: be equipped with on the prism table (12) the common two wedges formed of little wedge (18) are housed on big wedge (17) and the instrument outlet window.

4, Laser Beam Auto-Level instrument according to claim 1 is characterized in that: garden bubble (20) also is equipped with at the top of instrument.