JPH0355053Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pedestal for a light wave distance meter reflector, and more particularly to a device for holding the reflector in a specific position.

A light wave distance meter emits a modulated light wave toward a reflector placed at a distance measurement point, and measures the distance to the reflector from the phase difference between the modulated light wave reflected by the reflector and a reference modulated light wave. Conventionally, this light wave distance meter has often been used for measuring long distances of 2 to 3 km or more with high precision.

However, in recent years, the distance measurement accuracy has been high, the time required for distance measurement has been shortened, and as the distance measurement has become more compact and lightweight, light wave distance meters that can be mounted on angle measurement devices such as theodolites, and angle measurement devices that can be installed on the light wave distance meter itself, have become more compact and lightweight. A light wave rangefinder incorporating this has been manufactured, and the distance range that can be measured by a light wave rangefinder has been expanded, and now light wave rangefinders are being used for short distances of about 50 to 100 meters. Along with this, the environment in which distance measurement is performed using a light wave distance meter is not only limited to mountains and fields with conventional 1st or 3rd order triangulation points, but also includes urban areas where the distance measurement point is on the wall of a building, etc. As a result, it has become difficult to install reflectors in some cases. In other words, conventional reflectors are configured to be mounted on a tripod, and it is impossible to install the reflector if there is an obstacle such as a wall or a fence near or on the point to be measured. . Therefore,
Conventionally, when there is an obstacle near the point to be measured, a reflector is installed at a temporary position away from the point to be measured, the distance to the temporary position is measured with a light wave distance meter, and then the distance is measured from the temporary position to the point to be measured. They are forced to perform the tedious task of measuring distance with a tape measure and adding these measured values to find a predetermined distance.

On the other hand, the conventional method of installing a reflector fixed on a tripod at the distance measurement point is to first set up the tripod with the reflector fixed at the distance measurement point, and then:
To ensure that the reference point of the reflector (usually the virtual reflective surface of the reflector's corner cube) is exactly aligned with the point to be measured, move the entire tripod using a "plumb bob" or move the top part of the tripod. The reflector support base, which can be slid horizontally, is moved. However, these conventional methods have the disadvantage that it takes a lot of time and effort to install the reflector at the point to be measured. Also, the plumb bob is
It has been difficult to accurately adjust the position of the reflector, and for example, it has been difficult to adjust the position of the reflector with sufficient accuracy suitable for a light wave distance meter capable of measuring distances in millimeters.

The present invention was devised in view of the above-mentioned conventional problems, and enables the installation of a reflector even in locations where it was previously impossible to install the reflector at the distance measurement point using a tripod. To provide a pedestal for a light wave rangefinder reflector that can be used accurately without using any other equipment.

The structural feature of the present invention that achieves the above object is that the reflector is located within the virtual reflection plane of the optical distance meter reflector and supports the reflector so as to be able to swing around a point that intersects with the optical axis of the reflector. A pedestal for use in a reflector, the pedestal being provided across an upright column portion having a female thread that engages with a male screw provided on a prop member of the reflector, and an outer peripheral portion having an intersection point on the center line of the upright column portion. and a seat plate having a cross scale, and the light wave distance is characterized in that the intersection of the virtual reflection surface of the reflector and the optical axis is located vertically above the center of the cross scale of the seat plate. Pedestal for meter reflector.

Since the present invention is constructed as described above, it is possible to install the reflector even in a place where it is impossible to install the reflector at the distance measurement point using a tripod, and the installation can be done without using a plumb bob or the like. It has the advantage of being accurate.

Hereinafter, embodiments of the present invention will be described based on the drawings. First, as shown in FIGS. 1 and 2, the reflector stage 1 consists of a stage main body 2, a tilt arm 8 having a screw hole 6 for attaching the reflector 4, a tilt arm fixing screw 10, and a column fixing screw 12. . A circular bubble tube 14 is attached to the stage body 2, and a support through hole 16 is provided. The rotation axis 17 of the tilt arm 8 crosses the center of the column through hole 16. Pillar through hole 1
The column 18 passing through the column 6 is fixed to the stage body 2 by tightening the column fixing screw 12. The optical axis 20 of the reflector 4 attached to the tilt arm 8 intersects with the center line 22 of the column 18 passing through the column through hole 16 . Similarly, the virtual reflective surface 24 of the reflector 4 is aligned with the rotation axis 1 of the tilt arm 8.
Contains 7.

A male screw 28 is provided at the lower part of the support 18 to be screwed into the pedestal 26 of the embodiment. The pedestal 26 is
It consists of an upright column section 34 provided with an upper female threaded section 30 into which the support column 18 is threaded and a lower female threaded section 32 into which the tripod engagement screw is threaded, and a seat plate section 36. A cross scale 38 centered on the centerline 37 of the upright support 34 is provided around the seat plate 36 . A fixing screw 40 is also screwed into the male screw 28.

In the above configuration, the upper female threaded portion 30 of the upright column 34 is screwed together, and when the desired screwed state is achieved, the fixing screw 40 is tightened to fix the upright column and the pedestal 26 to each other. On the other hand, by loosening the strut fixing screws 12, the stage body 2 can slide freely on the struts 18, and by moving the stage body 2 to a desired height and tightening the strut fixing screws 12 again, the stage body 2 can be moved to the struts 18. Fixed to. Furthermore, the tilt arm fixing screw 10 is loosened to make the tilt arm 8 swingable, the reflector 4 is directed in a desired direction, and the tilt arm fixing screw 10 is tightened again. Here, the virtual reflective surface 24 of the reflector 4 includes the rotation axis 17 of the tilt arm 8, and the rotation axis 17 is connected to the center line 22 of the column 18 and the upright column 3.
4, the intersection of the optical axis 20 of the reflector 4 and the virtual reflective surface 24 is always at the pedestal 2.
6, located vertically above the center of the cross scale 37.

When installing the pedestal 26 on a triangular point or a private standard peg, as shown in FIG.
The point peg 100 is installed so that the cross scale 38 of the pedestal 26 coincides with the cross line 102 on the upper surface.

In addition, when installing the pedestal 26 on the center line of a wall or fence, as shown in FIG.
A pair of opposing cross scales 38 of the pedestal 26 are installed so as to align with the center line 202 of the pedestal 26.

[Brief explanation of the drawing]

Figure 1 is a plan view of the reflector stage, Figure 2 is a plan view of the reflector stage.
3 is a plan view showing the relationship between the top surface of the point pile 100 and the pedestal, and FIG. 4 is a plan view showing the relationship between the top surface of the wall and the pedestal. 1... Reflector stage, 2... Stage main body, 4... Reflector, 8... Tilt arm, 18... Support column, 26... Pedestal, 34... Upright pillar section, 36... Seat plate section.

Claims (1)

[Claims for Utility Model Registration] (1) A reflector pedestal that supports a light wave distance meter reflector so as to be able to swing around a point that is within the virtual reflection plane of the reflector and intersects with the optical axis of the reflector, The pedestal has an upright column portion having a female thread that engages with a male screw provided on a support column member of the reflector, and a seat plate having a cross scale provided across the outer periphery having an intersection point on the center line of the upright column portion. The intersection of the virtual reflective surface of the reflector and the optical axis is
A pedestal for a light wave distance meter reflector, characterized in that it is configured to be located vertically above the center of the cross scale on the seat plate. (2) The pedestal for a light wave distance meter reflector according to claim (1) of the utility model registration claim, wherein the seat plate portion has means for engaging with a tripod.