JPH02118413A - Surveying machine equipped with automatic correcting device for inclination error - Google Patents

Abstract

PURPOSE:To correct inclination errors of a machine body in two front-rear and left- right dimensions automatically at the same time by providing a light emission part such as a collimation optical system, a suspended reflecting member, and a projection lens system. CONSTITUTION:A suspended ribbon crossing type pendulum 4 is constituted by coupling four thin metallic ribbons 4a in a crossing shape between a single pendulum 3 and a lower pendulum part 4b. A collimation lens 6 having its optical axis 5 set in the horizontal direction parallel to the pivot shaft 1 of the single pendulum 3 is installed in the machine body ahead in the swing direction of the pendulum 4. Then the reflecting member 7 is installed on the pendulum part 4b on the horizontal optical axis 5 of the lens 6. Then luminous flux which strikes on the reflecting member 7 by passing through the through hole 9 of the single pendulum along the perpendicular optical axis 8 is reflected by 90 deg. and projected horizontally along the horizontal optical axis 5 to form its image a focal plate 10 through the lens 6; and this projection image is observed through an ocular 11 to collimate a perpendicular point. Consequently, however the machine body slants in two dimensions, the perpendicular optical axis 8 can be held invariably in the perpendicular direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a surveying machine, such as a two-dimensional level or an automatic vertical standard, which is equipped with an automatic correction device for automatically correcting inclination errors in two-dimensional directions. be.

Conventional automatic vertical leveling machines are equipped with a device that automatically corrects vertical errors only for the tilt of the aircraft in the longitudinal direction, but they are also equipped with a device that corrects errors for the tilt in the left and right directions. do not have. Therefore, after setting the longitudinal vertical plane in a certain direction, turn the aircraft 90 degrees and set the longitudinal vertical plane again, and then find the intersection of both to set the true zenith direction. Therefore, it was extremely complicated and it was impossible to directly determine the true zenith direction.

In order to solve the above-mentioned conventional problems, the present invention is capable of automatically correcting tilt errors of the aircraft in two-dimensional directions (front, rear, left and right), and directly sets the true zenith direction with an automatic vertical reference device. It is also equipped with an automatic correction device that makes it possible to input a beam of light directed toward the zenith accurately into a pentaprism or the like that rotates around a horizontal axis on a two-dimensional level, and to emit an accurate horizontally rotating beam of light. This paper proposes a surveying machine, the gist of which is a reference optical system or a light emitting part such as a laser beam, and a reference optical system that reflects a reference light from the vertical direction and enters the reference optical system and is formed by the reference optical system. The light emitting part is suspended so that the reference axis thereof is always oriented in the vertical direction, or the light emitted from the light emitting part is reflected upward and the optical axis of the reflected light is always oriented in the vertical direction. a suspended reflective member;
a collimation lens for imaging the reference light;
Alternatively, there is provided a surveying machine equipped with an automatic tilt error correction device characterized by having a projection lens system for projecting a laser beam or the like into a substantially parallel beam.

The present invention will be described in detail with reference to the embodiments illustrated below.
As shown in FIGS. 1 and 2, the surveying machine of the present invention has a simple pendulum 3 swingably suspended from a horizontal pivot 1 via a bearing 2 in the body of the surveying machine. A suspended cross-bond pendulum 4 constituting a suspended reflective member according to the present invention is suspended from the lower surface.

The suspended cross-bond pendulum 4 has four thin metal ribbons 4a.
is connected in a crosswise manner between the simple pendulum 3, which is the supporting part, and the lower pendulum part 4b, and is suspended with respect to the simple pendulum 3 so as to swing in a direction perpendicular to the direction of its swinging force. There is. In this suspended Bon cross-type pendulum 4, the magnification k of the inclination of the pendulum part 4b with respect to the inclination of the support part is set to -0.5, and the simple pendulum 3, which is the support part, is perpendicular to the swing direction. When the pendulum part 4b is tilted by an angle θ in the opposite direction, the pendulum part 4b is tilted in the opposite direction by an angle θ
It is tilted.

In order to construct such a suspended-bond crossing type pendulum 4, in FIG.
The length of the connection point in the support part is a, the length of the connection point in the pendulum part is b, and the intersection angle between the hanging bong 4a and the support part is M
, if the intersection angle of the pendulum part with respect to the center of gravity G of the pendulum at the connection point of the pendulum part of the hanging bong 4a is N, then the equation for the equilibrium condition of the cross link is: 1+(b/a) k=- (b/a) -cot M-cot (M-N), so the formula for determining the position of the center of gravity G is k (b (k-1) -a) tan M, and with k=o, 5, set the center of gravity G at a predetermined position. It can be configured by specifying.

A collimation lens 6 with an optical axis 5 set in a horizontal direction parallel to the pivot axis 1 of the single pendulum 3 is installed inside the body in front of the suspended Bonn cross-type pendulum 4 in the swinging direction. A reflecting member 7 such as a reflecting mirror or a prism is installed on the pendulum portion 4b of the suspended Bonn cross-type pendulum 4 on the horizontal optical axis 5 of the collimation lens 6. The input and reflected optical axes are horizontal and vertical, forming a vertical optical axis 8 perpendicular to the horizontal optical axis 5.

A through hole 9 for transmitting a light beam is provided in the simple pendulum 3 at a portion intersecting the vertical optical axis 8 .

The first embodiment shown in FIG. 1 shows an example configured as an automatic vertical standard, in which a light beam incident on a reflecting member 7 along a vertical optical axis 8 is reflected at right angles and reflected along a horizontal optical axis 5. The beam is emitted in the horizontal direction through the collimation lens 6 of the standard optical system, and is imaged onto the focal plate 0 installed on its focal plane, and this projected image is observed with the eyepiece 11 to standardize the vertical point. has been done.

The second embodiment shown in FIG. 2 shows an example configured on a two-dimensional level, in which the collimation lens 6 of the projection lens system
A light source 12 that emits laser or infrared rays is provided on the focal point of the light beam, and the light beam is incident on a reflecting member 7 through a collimation lens 6, where it is vertically reflected and arranged so as to be rotatable on a vertical optical axis 8. Second reflective member 13 such as a pentaprism
It is configured to eject while turning in the horizontal direction.

In the above configuration, if the aircraft is now tilted by θ in the longitudinal direction and β in the horizontal direction, the single pendulum 3 will be tilted by θ with respect to the aircraft due to the inclination θ of the aircraft in the longitudinal direction. The pendulum portion 4b and the reflecting member 7 of No. 4 are tilted by -θ/2. In this state now, the first
As shown in the figure, when a vertical light beam is incident on the reflecting member 7, the reflected light beam is reflected by the hanging Bonn cross-type pendulum 4 according to the law of reflection.
Since it is reflected in a direction in which the inclination is twice the inclination θ/2 of the reflecting member 7, that is, the inclination is increased by θ, it is emitted along the optical axis 5 inclined by the inclination θ of the aircraft, and As a result, the tilt of the aircraft can be corrected, and the vertical direction can be accurately determined.

On the other hand, due to the lateral inclination β of the aircraft body, the single pendulum 3 and the suspended Bonn cross-type pendulum 4 are oriented vertically with an inclination β to the aircraft body, so that correction for the lateral inclination of the aircraft body is achieved.

Therefore, no matter what direction the aircraft leans in two-dimensionally,
The vertical optical axis 8 can always be maintained in the vertical direction, which makes it easy to standardize the vertical point with a vertical standard device, and it is possible to always emit an accurate horizontally rotating light beam on a two-dimensional level.

As described above, according to the surveying machine equipped with the automatic correction device for tilt errors according to the present invention, for example, in an automatic vertical reference machine, the reference light from the vertical direction is reflected and made to enter the vertical reference optical system. The suspended reflection member allows the reference axis formed by the vertical reference optical system to always be oriented in the vertical direction, which has the effect of always being able to reference the vertical point regardless of the inclination of the aircraft. At the two-dimensional level, where light is emitted as a horizontally rotating beam,
The suspended reflection member that reflects the light beam from the light emitting part can automatically correct the emitted light so that it always points in the vertical direction, and by reflecting it horizontally and rotating it for scanning, accurate This has the effect of being able to obtain a horizontally rotating light beam.

[Brief explanation of the drawing]

FIG. 1 is a schematic longitudinal sectional view showing the main parts of one embodiment of the M measuring machine according to the present invention, FIG. 2 is a schematic longitudinal sectional view showing the main parts of another embodiment, and FIG. 3 is the main part. FIG. 2 is a configuration summary diagram of an embodiment of the part. 1. Pivot, 3. Single pendulum, 4. Suspended Bon cross-type pendulum, 4a. Suspended Bon, 4b. Pendulum i, 5. Optical axis, 6. Collimating thin lens, 7.・Reflective member, 8・
・Vertical optical axis.

Claims (2)

[Claims] (1) A reference optical system or a light emitting unit such as a laser beam, which reflects the reference light from the vertical direction and enters the reference optical system, and also keeps the reference axis formed by the reference optical system in the vertical direction. a suspended reflecting member that is suspended so as to be oriented, or that is suspended so that the light emitted from the light emitting part is reflected upward and the optical axis of the reflected light is always oriented in the vertical direction; A surveying machine equipped with an automatic tilt error correction device, characterized in that it has a collimation lens for forming an image of the reference light, or a projection lens system for projecting laser light or the like as a substantially parallel beam. (2) In the surveying machine according to claim (1), the parallel light flux obtained from the projection lens system is converted into an optical path by approximately 90° with respect to the vertical optical axis, and the parallel light flux is measured in a horizontal plane. A surveying machine equipped with an automatic tilt error correction device, characterized in that it is provided with a rotary reflecting member rotatably arranged to scan an object.