CN202057325U - Distance meter with two test lenses - Google Patents

Abstract

The utility model discloses a double test mirror rangefinder, which is composed of a fixed test mirror, a rotating test mirror, a bracket and a rotating shaft, the fixed test mirror is fixed on one end of the bracket, and the center line of the fixed test mirror and the center line of the bracket Fixedly connected at right angles, the lower end of the rotating test mirror is fixed with a rotating shaft, and the lower end of the rotating shaft is embedded in the hole on the bracket and forms a rotating connection with it; the utility model has the characteristics of small size, convenient portability, and accurate measurement, and simplifies installation at the same time , Adjust work, improve work efficiency, convenient and practical.

Description

Two test mirrors stadimeters

Technical field

The utility model relates to the instrument that a kind of measuring distance is used, particularly a kind of pair of test mirrors stadimeter.

Background technology

The stadimeter that uses is the floor stand structural formula mostly at present, and this carries very inconvenience for the field work personnel, and the fixing back of support installs, adjusts all very loaded down with trivial details, as heat, severe cold weather, staff's measurement is got up just difficult more, has influenced work efficiency.

Summary of the invention

The purpose of this utility model provides a kind of pair of test mirrors stadimeter, and this pair test mirrors stadimeter is easy to carry, installs and adjust easy, adapts to and to use under rugged environment.

The utility model is made up of fixing test mirror, rotation test mirrors, support and rotating shaft, the fixing test mirror is fixed on the end of support, the center line of fixing test mirror is fixedlyed connected with the center line of support and is met at right angles, the lower end of rotating test mirrors is fixed with rotating shaft, the lower end of rotating shaft be set in the hole on the support and with it formation be rotationally connected.

Principle of work of the present utility model is: at first find measuring target point P from the fixing test mirror, find impact point P by rotating test mirrors again, because of the distance L between fixing test mirror and the rotation test mirrors is a definite value, so just can determine measured distance H by corner α, according to the trigonometric function law of tangents as can be known: H=Ltg α.

The beneficial effects of the utility model are: volume is little, easy to carry, measurement is accurate, has simplified installation, adjustment work simultaneously, and is convenient and practical.

Description of drawings,

Fig. 1 is the front view of the utility model embodiment.

Fig. 2 is the vertical view of the utility model embodiment.

Fig. 3 is the left view of the utility model embodiment.

Fig. 4 is the A-A cutaway view Amplified image among Fig. 1.

Embodiment

See also Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4:

Embodiment 1: present embodiment is made up of fixing test mirror 1, rotation test mirrors 2, support 3 and rotating shaft 4.Fixing test mirror 1 is fixed on the end of support 3, and the center line N-N of fixing test mirror 1 is fixedlyed connected with the center line O-O of support 3 and is met at right angles, the lower end of rotating test mirrors 2 is fixed with rotating shaft 4, and hole 6 interior also the formation with it that the lower end of rotating shaft 4 is set on the support 3 are rotationally connected.

Embodiment 2: present embodiment is fixed with pointer 7 as different from Example 1 below rotating test mirrors 2 rear ends, semi-circle plane plate 8 below the rotation test mirrors 2 on the support 3 is provided with scale mark 9, scale by pointer 7 indications can be read distance H, and other composition is identical with embodiment 1 with annexation.

Embodiment 3: present embodiment and embodiment 1, embodiment 2 are different is that hole 6 on the support 3 is provided with pit 10, the rotating shaft 4 of rotating test mirrors 2 lower ends is provided with pit 10 corresponding holes 11, in hole 11, be provided with spring 12, be provided with ball 5 above the spring 12, the diameter of ball 5 is identical with the diameter of pit 10, and purpose is after rotating test mirrors 2 rotations, is convenient to the location, so as not to trackslipping, other composition is identical with embodiment 2 with embodiment 1 with annexation.

Claims (3)

1. two test mirrors stadimeter, it is characterized in that: form by fixing test mirror (1), rotation test mirrors (2), support (3) and rotating shaft (4), fixing test mirror (1) is fixed on the end of support (3), the center line N-N of fixing test mirror (1) is fixedlyed connected with the center line O-O of support (3) and is met at right angles, the lower end of rotating test mirrors (2) is fixed with rotating shaft (4), and interior also the formation with it in hole (6) that the lower end of rotating shaft (4) is set on the support (3) is rotationally connected.

2. a kind of pair of test mirrors stadimeter according to claim 1, it is characterized in that: described rotation test mirrors (2) is fixed with pointer (7) below the rear end, and the semi-circle plane plate (8) that rotates on test mirrors (2) the below support (3) is provided with scale mark (9).

3. a kind of pair of test mirrors stadimeter according to claim 1 and 2, it is characterized in that: the hole (6) on the described support (3) is provided with pit (10), the rotating shaft (4) of rotating test mirrors (2) lower end is provided with the corresponding hole of pit (10) (11), in hole (11), be provided with spring (12), be provided with ball (5) above the spring (12), the diameter of ball (5) is identical with the diameter of pit (10).

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