CN2791601Y

CN2791601Y - Self-levelling laser sweeping instrument

Info

Publication number: CN2791601Y
Application number: CN 200520078447
Authority: CN
Inventors: 李林
Original assignee: Xian University of Technology
Current assignee: Xian University of Technology
Priority date: 2005-03-10
Filing date: 2005-03-10
Publication date: 2006-06-28
Anticipated expiration: 2015-03-10

Abstract

The utility model relates to an automatic levelling laser swinger, which comprises a cylindrical box body, wherein the central position of an upper cover of the box body is provided with a semiconductor laser of which the light ejection direction is upward, the inner part is provided with a battery box and a power switch, a transmission circuit is formed by that the semiconductor laser is connected in series with the battery box and the power switch, and three connections columns are fixed on the upper cover of the box body at intervals of 120 DEG. The upper plane of the connection column is fixed with a circular disc-shaped top plate, the central position of the upper part of the top plate is fixed with a hook, the central position of the lower part is fixed with a cone-shaped reflection mirror of which the tip part is downward, the cone angle of the reflection mirror is 90 DEG, the middle position of a lower cover of the box body is fixed with a cone-shaped weight dropper, and a hanging point of the hook, the circle center of the top plate, a longitudinal shaft of the reflection mirror, a light shaft of the semiconductor laser, a longitudinal shaft of a connection box and a longitudinal shaft of the weight dropper are concurrent. The laser swinger of the utility model does not need a mechanical drive mechanism, and the utility model has the characteristics of high precision, small energy consumption, simple mechanism, convenient carrying, and automatic levelling.

Description

The self-leveling Geoplane

Technical field

The utility model relates to a kind of Geoplane, relates in particular to a kind of mechanical transmission mechanism that do not contain, automatically the Geoplane of level-off.

Background technology

Chinese patent CN 2279585Y (open April 22 1998 date) discloses a kind of Geoplane, this instrument is by motor-driven, drive the laser generator rotation by mechanical drive, this Geoplane uses usually around the semiconductor laser institute emitted laser bundle of certain stationary shaft rotation and forms laser plane, the light source rotation is finished by motor and gear train, motor on this Geoplane and semiconductor laser adopt same power supply power supply, and the level of scanner is to be adjusted by the adjusting knob of scanner bottom.There is following major defect in this kind instrument:

1. precision is low: the swing that cooperation and rotation produced and the vibration of gear train, reduced and put down precision.

2. energy consumption is big: scanner is the instrument that use in a kind of outfield, and use occasion does not possess condition of power supply usually.Portable scanner often adopts powered battery, and the energy consumption of drive motor is the main energy consumption of instrument.When using the powered battery operation, working time is very limited, is difficult to satisfy request for utilization.

Mechanism's complexity, mechanical wear is big, cost is high: owing to adopted light source rotation scheme, motor and gear train are essential, cause mechanism's complexity, the cost height; Have rotation that wearing and tearing must be arranged, reduce serviceable life.

4. levelness is difficult to guarantee: scanner before use must be earlier with self level-off, and whether level is a human eye is determined by the bubble position of observing on the scanner, because bubble is less and the uncertainty of eye-observation, causes levelness to be difficult to guarantee.

Summary of the invention

In order to solve the existing shortcoming that the Geoplane precision is low, energy consumption is big, mechanism is complicated, mechanical wear is big, levelness is difficult to guarantee, the purpose of this utility model is to provide a kind of novel Geoplane, this scanner does not need mechanical transmission mechanism, and can Automatic Levelling.

The technical scheme that the utility model adopted is, the self-leveling Geoplane, comprise casing, casing is a cylindrical shape, the center of its loam cake sets out light direction semiconductor laser up, inside is provided with battery case and power switch, semiconductor laser and battery case and power switch polyphone are formed radiating circuit, box cover is fixed with joint pin, the fixing top board in plane on the joint pin, top board is a collar plate shape, its central upper portion stationkeeping hook, the pyramid type catoptron that lower central stationkeeping one tip is downward, the cone angle of catoptron are 90 °, conical weight is fixed in casing lower cover centre position, and the hanging point of hook, the center of circle of top board, the longitudinal axis of catoptron, the optical axis of semiconductor laser, the longitudinal axis of connecting box, the longitudinal axis of weight coincides.

Characteristics of the present utility model are that also joint pin is separated by 120 ° and is provided with three.

The beneficial effects of the utility model are:

1. precision height; Because movement-less part in the scanner has overcome the precision of putting down that causes because of swing and vibration and has reduced.

2. energy consumption is low; Because semiconductor laser power consumption is very little, but use the powered battery long-play, thereby satisfied the request for utilization of portable scanner fully.

3. self-leveling; Because scanner can find the nature level automatically according to the characteristic of gravity, thereby overcome, and removed the operation of the preceding necessary level-off of each use from because bubble is less and uncertainty eye-observation causes the problem of levelness difference.

4. mechanism is simple; Reduced mechanical transmission mechanism, make production, the assembling easier, cost is lower.

5. microminiaturized; Because the simplification of mechanism, but reduced volume, make carry, use convenient.

6. the life-span is long; Because movement-less part in the scanner, thereby thereby do not have wearing and tearing and increased serviceable life.

Description of drawings

Fig. 1 is the structural representation of the utility model self-leveling Geoplane;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is a lasing area occurring principle synoptic diagram of the present utility model.

Among the figure, 1 hook, 2 top boards, 3 catoptrons, 4 joint pins, 5 semiconductor lasers, 6 casings, 7 battery cases, 8 power switches, 9 weights.

Embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

Referring to Fig. 1, Fig. 2, the self-leveling Geoplane, comprise casing 6, casing 6 is oblate, the center of its loam cake sets out light direction semiconductor laser 5 up, inside is provided with battery case 7 and power switch 8, semiconductor laser 5 is formed radiating circuit with battery case 7 and power switch 8 polyphones, casing 6 loam cakes are separated by 120 ° and are fixed with three joint pins 4, the fixing top board 2 in plane on the joint pin 4, top board 2 is a collar plate shape, its central upper portion stationkeeping hook 1, the pyramid type catoptron 3 that lower central stationkeeping one tip is downward, the cone angle of catoptron 3 is 90 °, conical weight 9 is fixed in casing 6 lower cover centre positions, and the hanging point of described hook 1, the center of circle of top board 2, the longitudinal axis of catoptron 3, the optical axis of semiconductor laser 5, the longitudinal axis of connecting box 6, the longitudinal axis of weight 9 coincides, and the utlity model has the function of suffering from one's own actions level thereby make.

Referring to Fig. 3, because semiconductor laser 5 laser beam axis and catoptron 3 circular cone axis coaxles, when laser beam irradiation on pyramid type catoptron 3, beam center overlaps with the vertex of a cone, and the cone angle of catoptron 3 is made as 90 °, according to optical principle, it is 45 ° plane mirror that pyramid type catoptron 3 can be considered on the circular conical surface the unlimited a plurality of angles that distribute in 360 ° of scopes, reflection ray will with incident light at an angle of 90, when incoming laser beam is vertical incidence, can obtain a horizontal laser light face.

This Geoplane cone angle is that 90 ° the pyramid type catoptron 3 and the position of semiconductor laser 5 can exchange up and down, semiconductor laser 5 emitted laser bundles upwards are radiated on the vertex of a cone of coaxial circles cone-type mirror 3, or semiconductor laser 5 emitted laser bundles are radiated at downwards on the vertex of a cone of coaxial circles cone-type mirror 3, thereby produce lasing area.

The course of work of this machine is: the hook 1 of scanner is suspended on the support component, the battery of in battery case 7, packing into, power switch 8 pushes the ON position, scanner can send laser plane, weight 9 makes its longitudinal axis and natural surface level perpendicular under action of gravity, thereby laser plane is paralleled with natural surface level.

Claims

1. self-leveling Geoplane, comprise casing (6), casing (6) is a cylindrical shape, the center of its loam cake sets out light direction semiconductor laser (5) up, inside is provided with battery case (7) and power switch (8), semiconductor laser (5) is formed radiating circuit with battery case (7) and power switch (8) polyphone, it is characterized in that, described casing (6) loam cake is fixed with joint pin (4), joint pin (4) is gone up fixedly top board (2) of plane, described top board (2) is a collar plate shape, its central upper portion stationkeeping hook (1), the pyramid type catoptron (3) that lower central stationkeeping one tip is downward, the cone angle of described catoptron (3) is 90 °, conical weight (9) is fixed in casing (6) lower cover centre position, and the hanging point of described hook (1), the center of circle of top board (2), the longitudinal axis of catoptron (3), the optical axis of semiconductor laser (5), the longitudinal axis of connecting box (6), the longitudinal axis of weight (9) coincides.

2. self-leveling Geoplane according to claim 1 is characterized in that, described joint pin (4) is separated by 120 ° and is provided with three.