JPH01112108A - Leveling device for survey instrument - Google Patents

Abstract

PURPOSE:To accurately and easily set the survey instrument even in a narrow space where a tripod can not be installed by using the leveling device consisting of a base board and a slide rack which is mounted slidably on the base board. CONSTITUTION:Parallel long holes 21 are bored in the peripheral edge parts of the substrate 2 made of a rectangular plate body. Further, a receiving rail 22 where the slide rack 3 is mounted and slid is provided on the top surface of the base board 2. Further, a center hole 23 for finding the perpendicularity of the survey instrument optically is formed in the center of the base board 2. When the device is used, the substrate 2 is mounted on an installation base 5 and the substrate 2 is moved in the opening direction of the long hole 21 to adjust a location position. Then the survey machine 4 is mounted on the slide rack 3, which is moved laterally on the receiving rail 22 to make a fine adjustment. The height of the survey instrument 4 is adjusted by using an elevation device 6 mounted on the slide rack 3.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a leveling device for a surveying instrument, such as a transit, which is mounted on it and used for surveying work.

<Conventional Technology> Generally, when surveying is carried out using a surveying instrument such as a transit or leveling device, the installation accuracy (leveling accuracy) of the surveying instrument is extremely important.

For ordinary surveying, a tripod is often used, which consists of a metal leg head to which a surveying instrument is attached, and three legs that support it.

<Problems that this invention attempts to solve> The above-mentioned surveying techniques have the following problems.

(b) There is no problem if there is enough space to install a tripod at the surveying site, but if the space for installing the tripod is small due to various obstacles in the surrounding area, it may be difficult to install the tripod. It is time consuming and there are still problems with installation accuracy.

Additionally, there are surveying instruments and telescoping tripods that have a height adjustment function, but the adjustment range is narrow and the adjustment range is limited.

(b) If a tripod could not be used, a temporary pedestal made of square or steel material was constructed and used in a shape appropriate to the situation at the site.

When such a temporary frame is used, the installation position adjustment operation and height adjustment operation rely on the intuition of a skilled person.

Therefore, the installation accuracy of the surveying instrument is low, and the installation operation requires a great deal of time and effort.

(c) Temporary stands are often disposable (uneconomical).

Purpose of the present invention The present invention has been devised in view of the above points, and it is possible to set up a surveying instrument accurately and easily even in a narrow space where a tripod cannot be installed, and furthermore, it can be reused many times. The purpose of the present invention is to provide a leveling device for a surveying instrument (hereinafter referred to as a "leveling device").

<Configuration of the present invention> An embodiment of the present invention will be described below with reference to the drawings.

B. Structure of leveling device (Fig. 1) The leveling device 1 consists of a base plate 2 and a sliding pedestal 3 mounted on the base plate 2 so as to be slidable.

<Opening> Substrate The substrate 2 is a rectangular plate, and a plurality of parallel elongated holes 21 are formed at the periphery of the plate surface on a pair of opposing sides.

In this embodiment, a case will be described in which four sets of elongated holes 21 are provided, but four or more sets may be provided as long as the elongated holes are parallel to each other on a pair of opposing sides.

Furthermore, a receiving rail 22 is provided on the upper surface of the board 2 on which the sliding frame 3 is placed and slid.

This receiving rail 22 is formed in a dovetail shape, for example, as shown in FIG. The structure is such that the direction of extraction can be regulated.

Further, in the center of the substrate 2, a center hole 23 is provided for optically determining the vertical direction of the surveying instrument 4.

This board 2 is used by being placed on a concrete installation stand 5 which will be described later, and is particularly characterized by having a structure in which the fixing position can be adjusted by moving the board 2 in the opening direction of the elongated hole 21. shall be.

<C> Sliding mount The sliding mount 3 is a box-shaped mount for the purpose of mounting the surveying instrument 4.

A dovetail-shaped locking member 31 is protruded from the lower surface of the bottom of the sliding frame 3, and a center hole 32 is provided at the center of the bottom surface.
A fixing bolt 33 is attached around the base plate 2 for restraining the sliding movement of the sliding frame 3 and fixing it to the base plate 2.

On the other hand, an insertion opening 34 for inserting a cylindrical elevation device 6 having an elevating function is provided on the top surface of the sliding frame 3.

2) Surveying Instrument The surveying instrument 4 that can be used is, for example, Level or Transit.

As the surveying instrument 4, a known one is used, which is equipped with an adjustment mechanism and a height adjustment mechanism at the bottom that can adjust the horizontal level.

-4 Next, how to use the leveling device 1 will be explained. (
Figure 1.3) For installation, form a concrete installation stand 5 at the planned location where the preparation leveling device 1 will be installed.

At this time, four installation bolts 51 are installed on the north face of the installation base 5.

〉Setting the leveling device Next, place the leveling device 1 on the top of the installation base 5, and insert the leveling device 1 into each slot 2.
A nut 52 is screwed onto a planting bolt 51 protruding from 1 and fixed.

In the present invention, before fixing the leveling device 1 with the nut 52, the installation is adjusted in two stages by adjusting the position.

[Adjustment operation in the direction crossing the reference direction] In other words, slide the board 2 constituting the leveling device 1 in the direction crossing the reference direction (hereinafter referred to as "lateral direction") to determine the approximate installation position, and then tighten the mounting bolts. Tighten and fix the nut 52 screwed into the nut 51.

Further, when adjusting the horizontal installation position using the surveying instrument 4 as a reference, fine adjustment is performed by moving the sliding frame 3 laterally on the receiving rail 22.

After completing the horizontal fine adjustment of the sliding frame 3, remove the fixing bolt 3.
3 to restrict sliding of the sliding frame 3.

[Reference Direction Adjustment Operation 1 The installation position in the reference direction (hereinafter referred to as "front-back direction") is adjusted using the adjustment mechanism provided in the surveying instrument 4.

[Height adjustment operation] In addition, the height of the surveying instrument 4 is adjusted by extending the elevation device 6 mounted on the sliding pedestal 3, and fine adjustments are made using the height adjustment mechanism provided on the surveying instrument 4. Use and do it.

<Other Examples> When setting the surveying instrument 4 at a high position, the leveling device 1
An auxiliary frame 7 as shown in FIG.
The survey is carried out through the intermediary of

This auxiliary frame 7 has an upper frame 71 and a lower frame 7 located horizontally.
2 and a support frame 73 that vertically connects both frames 71 and 72.
It is a box with open top and bottom ends.

The elongated holes 21 of the board 2 are formed on the plate surfaces of the upper frame 71 and the lower frame 72.
A long hole 74 is opened at the same position.

Further, several types of auxiliary mounts 7 with different heights are manufactured and used by stacking them according to the installation height of the surveying instrument 4.

Further, the auxiliary frame 7 is placed on the installation base 5 and the horizontal installation position is adjusted using the elongated hole 74, as in the previous embodiment.

Effects of the present invention> The present invention provides the effects described above.

(a) Even in a space so narrow that a tripod for the surveying instrument cannot be set, the surveying instrument can be easily and quickly (and reliably installed).

(b) Since the leveling device on which the surveying instrument is mounted has the ability to adjust the installation position in the lateral direction, adjustment of the installation position is easy.

(c) Can be used with a wide range of surveying instruments such as transit and level.

(d) The leveling device can be reused any number of times and is economical.

[Brief explanation of the drawing]

Fig. 1: Overall perspective view of the leveling device according to the present invention Fig. 2: Enlarged view of the lower part of the leveling device Fig. 3: Explanatory diagram when adjusting the installation position of the surveying instrument Fig. 4: Perspective view of the auxiliary mount

Claims (1)

[Scope of Claims] Consisting of a board having a plurality of parallel elongated holes at the edge of a plate, and a sliding pedestal mounted on the board so as to be able to slide in the direction of the elongated holes, the center of the board and A leveling device for surveying instruments that has openings at the top and bottom of the sliding pedestal to determine the verticality of the surveying instrument.