CN204346329U - A kind of height measuring device of surveying instrument - Google Patents

Abstract

The utility model discloses a height measuring device of a measuring instrument, which comprises a device casing arranged on one side of the measuring instrument and a tape measure for measuring the distance between the device casing and a ground measuring point directly below the measuring instrument. A rotating shaft for winding the measuring tape is arranged in the device casing, and a telescopic scale for measuring the horizontal distance between the device casing and the high mark of the measuring instrument is installed on the device casing. The telescopic scale and the tape measure Intersect at a point on the device casing, the telescopic scale includes a fixed scale section fixedly connected to the device casing and a multi-stage telescopic scale connected to the fixed scale section, the fixed scale section A pipe level is installed on it. The height-measuring device effectively overcomes the shortcomings of large errors in measuring the height of measuring instruments in the prior art, and can quickly and accurately calculate the vertical height of the measuring instrument by using triangular geometric relations.

Description

height measuring device

technical field

The utility model relates to a height measuring device, in particular to a height measuring device of a measuring instrument.

Background technique

At present, when measuring the height of the instrument, steel tapes are generally used to measure directly, but what this method measures is the slant distance from the height mark of the instrument to the ground measurement point of the station, not the distance from the ground measurement point of the station to the center of the instrument. the vertical distance. At the same time, the existing method is affected by the tripod and the instrument, so that the steel tape cannot be straightened during the measurement process, and the value read is equivalent to the distance of a section of the curve. Even if the average value of multiple measurements is used as the slope height of the instrument, the The inclination distance will still be affected by the measurement method and reading error, especially when using a total station for triangular elevation measurement, the office data is calculated according to the vertical distance. Obviously, it is unreasonable to use the traditional method to measure the height of the instrument for height calculation. Therefore, a device capable of accurately measuring the height of the instrument is needed to improve the accuracy of the measurement results.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a height measuring device of a surveying instrument. The height-measuring device effectively overcomes the shortcomings of large errors in measuring the height of measuring instruments in the prior art, and can quickly and accurately calculate the vertical height of the measuring instrument by using triangular geometric relations.

In order to achieve the above object, the technical solution adopted by the utility model is: a height measuring device of a measuring instrument, which is characterized in that it includes a device housing arranged on one side of the measuring instrument and is used to measure the height of the device housing and the measuring instrument. A tape measure for measuring the distance between points on the ground directly below, a rotating shaft for winding the tape measure is arranged in the housing of the device, and a horizontal distance measuring device housing and the high mark of the measuring instrument are installed on the housing of the device A telescopic scale, where the telescopic scale and the tape meet at a point on the device housing, the telescopic scale includes a fixed scale segment fixedly connected to the device housing and a fixed scale segment connected to the fixed scale segment The multi-level telescopic scale is equipped with a tube level on the fixed scale section.

The height-measuring device of the above-mentioned measuring instrument is characterized in that: the multi-stage telescopic scale is a two-stage telescopic scale, including a primary scale section and a secondary scale section, and the primary scale section is inserted into The fixed scale section, the primary scale section is in sliding fit with the fixed scale section, the secondary scale section is inserted into the primary scale section, and the secondary scale section is in contact with a The primary scale section is in a sliding fit, the fixed scale section is provided with a first screw for abutting against the primary scale section to locate the primary scale section, and the primary scale section is provided with a screw for The second screw rests on the secondary scale segment to locate said secondary scale segment.

The above-mentioned height measuring device of a surveying instrument is characterized in that a braking slider for locking or releasing the measuring tape is slidably connected to the housing of the device.

The above-mentioned height-measuring device for a measuring instrument is characterized in that: one end of the measuring tape is provided with a ruler hook for conveniently pulling the measuring tape.

The above-mentioned height measuring device of a measuring instrument is characterized in that: the measuring tape is made of glass fiber.

Compared with the prior art, the utility model has the following advantages:

1. The structure of the utility model is simple, and the design is novel and reasonable.

2. The utility model uses the triangular geometric relationship to quickly and accurately calculate the vertical height of the instrument, avoiding the use of the oblique height of the instrument instead of the vertical height of the instrument, which affects the accuracy of the measurement data.

3. The utility model adopts a multi-level telescopic scale, which can be adjusted to a suitable position when measuring the height of the measuring instrument, and cooperates with the tape to form a right-angle relationship, which is convenient for calculation.

4. The utility model has the advantages of low cost of realization, good use effect, and convenient popularization and use.

To sum up, the utility model has the advantages of simple structure, reasonable design, convenient operation, convenient and accurate measurement, strong adaptability, low realization cost, strong practicability, easy popularization and application, and solves the problem that the height of the measuring instrument in the field is the slant distance .

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

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

Fig. 2 is a schematic diagram of the use state of the utility model.

Fig. 3 is a schematic diagram of the utility model for calculating the vertical height of the measuring instrument by using the triangular geometric relationship.

Explanation of reference signs:

1—Measuring instrument; 2—Device housing; 3—Telescopic scale;

3-1—Fixed scale section; 3-2—First-level scale section; 3-3—Secondary scale section;

3-4—first screw; 3-5—second screw; 4—tape measure;

5—rotating shaft; 6—foot hook; 7—brake slider;

8—tube level.

Detailed ways

A height measuring device for a surveying instrument as shown in Figures 1 and 2, comprising a device housing 2 arranged on one side of the surveying instrument 1 and a ground measurement point directly below the device housing 2 and the surveying instrument 1 The tape measure 4 of the distance between D, the device casing 2 is provided with a rotating shaft 5 for winding the tape measure 4, and the device casing 2 is installed with a connection between the measuring device casing 2 and the measuring instrument height mark B The telescopic scale 3 with the horizontal distance between them, the telescopic scale 3 and the tape measure 4 meet at a point on the device housing 2, and the telescopic scale 3 includes a fixed scale section fixedly connected with the device housing 2 3-1 and a multi-level telescopic scale connected to the fixed scale section 3-1, and a tube level 8 is installed on the fixed scale section 3-1.

In conjunction with Fig. 3, in the present embodiment, when the height measuring device of the measuring instrument is in use, the horizontal distance from the height mark B of the measuring instrument to the center C of the measuring instrument is clearly defined, and is recorded as L1; At the instrument height mark B, keep the bubble of the tube level 8 in the center, stretch the tape measure 4 to the ground measurement point D, read the readings of the telescopic scale 3 and tape measure 4 respectively, and record them as L2 and L3 respectively. The height d of the measuring instrument can be accurately obtained by using the Pythagorean theorem, and the calculation formula is as follows:

$\mathrm{<span\; class="notranslate">\; d</span>}<span\; class="notranslate">\; =</span>\sqrt{{\mathrm{<span\; class="notranslate">\; L</span>}\mathrm{<span\; class="notranslate">\; 3</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span>{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; L</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; L</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}$

In this embodiment, the height measuring device of the surveying instrument can quickly and accurately calculate the vertical height d of the instrument by using the triangular geometric relationship, so as to avoid replacing the vertical height of the instrument with the oblique height of the instrument, which will affect the accuracy of the measurement data.

As shown in Figure 2, the multi-stage telescopic scale is a two-stage telescopic scale, comprising a primary scale section 3-2 and a secondary scale section 3-3, and the primary scale section 3-2 is inserted The fixed scale section 3-1, the primary scale section 3-2 is in sliding fit with the fixed scale section 3-1, and the secondary scale section 3-3 is inserted into the primary scale Scale section 3-2, the secondary scale section 3-3 is in sliding fit with the primary scale section 3-2, and the fixed scale section 3-1 is provided with a -2 to locate the first screw 3-4 of the primary scale section 3-2, the primary scale section 3-2 is provided with a butt on the secondary scale section 3-3 to position the Describe the second screw 3-5 of the secondary scale section 3-3.

In this embodiment, a multi-level telescopic scale is used, which can be adjusted to a suitable position when measuring the height of the measuring instrument conveniently, and cooperates with the tape measure 4 to form a right-angle relationship, which is convenient for calculation.

As shown in FIG. 2 , a brake slider 7 for locking the tape measure 4 or releasing the tape measure 4 is slidably connected to the device housing 2 . It is convenient to lock the tape measure 4 and read the specific scale value of the tape measure 4.

As shown in FIG. 2 , one end of the tape measure 4 is provided with a ruler hook 6 for conveniently pulling the tape measure 4 . The ruler hook 6 is a rivet ruler hook structure, which is not easy to deform and ensures more accurate measurement.

In this embodiment, the tape measure 4 is made of glass fiber. It can prevent the tape measure 4 from being elongated during use and affecting the accuracy of measurement data. The device housing 2 is ABS new plastic, which has excellent properties such as excellent drop resistance, wear resistance, and non-deformation.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (5)

1. A height-measuring device for a surveying instrument, characterized in that: it comprises a device housing (2) arranged on one side of the surveying instrument (1) and is used to measure the height of the device housing (2) and the surveying instrument (1) A tape measure (4) for measuring the distance between points on the ground directly below, and a rotating shaft (5) for winding the tape measure (4) is arranged in the device housing (2), and the device housing (2) is installed There is a telescopic scale (3) for measuring the horizontal distance between the device housing (2) and the height mark of the measuring instrument, the telescopic scale (3) and tape measure (4) meet on the device housing (2) A point, the telescopic scale (3) includes a fixed scale section (3-1) fixedly connected to the device housing (2) and a multi-stage scale section (3-1) connected to the fixed scale section (3-1) A telescopic scale, a pipe level (8) is installed on the fixed scale section (3-1). 2. The height measuring device of a kind of measuring instrument according to claim 1, characterized in that: the multi-stage telescopic scale is a two-stage telescopic scale, comprising a primary scale section (3-2) and a secondary A scale section (3-3), the primary scale section (3-2) is inserted into the fixed scale section (3-1), and the primary scale section (3-2) is connected to the fixed The scale section (3-1) is a sliding fit, the secondary scale section (3-3) is inserted into the primary scale section (3-2), and the secondary scale section (3-3) It is in sliding fit with the primary scale section (3-2), and the fixed scale section (3-1) is provided with a device for abutting against the primary scale section (3-2) to position the primary scale section (3-2). The first screw (3-4) of the segment (3-2), the first-level scale segment (3-2) is provided with a screw for abutting on the second-level scale segment (3-3) to position the two Second screw (3-5) for grade scale segment (3-3). 3. The height measuring device of a measuring instrument according to claim 1, characterized in that: a brake for locking the tape measure (4) or releasing the tape measure (4) is slidably connected to the device housing (2). slider (7). 4. The height measuring device of a measuring instrument according to claim 1, characterized in that: one end of the measuring tape (4) is provided with a ruler hook (6) for conveniently pulling the measuring tape (4). 5. The height measuring device of a surveying instrument according to claim 1, characterized in that: the measuring tape (4) is made of glass fiber.