CN2849658Y

CN2849658Y - Compasses

Info

Publication number: CN2849658Y
Application number: CN 200520010546
Authority: CN
Inventors: 逄锦伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-17
Filing date: 2005-12-17
Publication date: 2006-12-20
Anticipated expiration: 2015-12-17

Abstract

The utility model relates to a new compass, which comprises an azimuth angle scale disc and a compass arranged at the center of the azimuth angle scale disc. The utility model is characterized in that the wheel edges of both ends of the diameter of the azimuth angle scale disc are respectively provided with symmetrical first rotary shafts; the free end of each rotary shaft is a sphere; the spheres on the free ends of the two first rotary shafts form a slide fit with circular slide ways on the inner side of a circular ring; the outer side of the circular ring is fixed on first brackets which are symmetrically arranged on the left and the right sides of a support seat; second brackets which are symmetrically arranged on the front and the rear sides of the support seat are provided with an oblique angle semicircular scale ring which is in the vertical state with the circular ring; the center under the azimuth angle scale disc is vertically connected with a gravity pointer corresponding to scales on the inner side of the oblique angle semicircular scale ring. The utility model has the advantages of compact structure, flexible rotation, convenient operation and high measuring precision and an azimuth angle and an oblique angle can be measured once.

Description

A kind of novel compass

Technical field

The utility model relates to surveying instrument, is specifically related to a kind of novel compass.

Background technology

Existing compass mostly is plane formula greatly, can not once measure position angle and inclination angle simultaneously, measures position angle and inclination angle as needs, need carry out secondary operation and can finish.Like this, not only make troubles, and influence measuring accuracy to surveying work.

Summary of the invention

The purpose of this utility model provides a kind of novel compass, its energy one-shot measurement position angle and inclination angle, and easy and simple to handle, measuring accuracy is higher.

A kind of novel compass described in the utility model, comprise the position angle index dial, be located at the compass at index dial center, position angle, be carved with the scale of 360 degree on the index dial of position angle, it is characterized in that: be respectively equipped with first rotating shaft of symmetry on the wheel rim at dial diameters two ends, position angle, the free end of first rotating shaft is a ball; The free-ended ball of first rotating shaft of two symmetries and the circular chute of annulus inboard are slidingly matched, and the outside of annulus is fixed on medianly zygomorphic first support of bearing; Be provided with an inclination angle semicircle calibration loop with annulus maintenance plumbness before and after the bearing on monosymmetric second support, be carved with angle value on it; Central vertical below the index dial of position angle is connected with a gravity pointer, and the gravity pointer is corresponding with the scale of semicircle calibration loop inboard, inclination angle.

Described a kind of novel compass, the two ends in its inclination angle semicircle calibration loop outside are provided with second rotating shaft of symmetry, and second rotating shaft of two symmetries cooperates with bearing on being located at monosymmetric second support in bearing front and back.This bearing can adopt sliding bearing, is best but adopt rolling bearing.

The utility model is compared with prior art and is had the following advantages: compact conformation, rotate flexibly, and energy one-shot measurement position angle and inclination angle, easy and simple to handle, measuring accuracy is higher.

Description of drawings

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

Fig. 2 is the structural representation of position angle index dial.

Fig. 3 is the structural representation of inclination angle semicircle calibration loop.

Fig. 4 is the synoptic diagram that compass, gravity pointer are connected with the position angle index dial.

Embodiment

Below in conjunction with accompanying drawing structure of the present utility model is further described.

Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the outside of annulus 5 is fixedly connected on bearing 7 medianly zygomorphic first supports 8; Two rolling bearings 13 are contained on second support 12 of both sides, bearing 7 front and back, two second rotating shafts 11 are connected to the two ends of inclination angle semicircle calibration loop 9, two second rotating shafts 11 cooperate with rolling bearing 13 on two second supports 12 respectively, second rotating shaft 11 at semicircle calibration loop 9 two ends, inclination angle can be rotated on second support 12, is in the vertical state simultaneously under the effect of gravity;

Two first rotating shafts 3 are fixedly connected on respectively on the wheel rim at position angle index dial 1 diameter two ends, simultaneously respectively at the fixedly connected ball 4 of the free end of two first rotating shafts 3, and make ultimate range between two first rotating shafts, the 3 free-ended balls 4 be slightly less than the interior circular diameter of annulus 5; With gravity pointer 10 be vertically connected on position angle index dial 1 center below, and make the upper end of gravity pointer 10 pass the center of position angle index dial 1, the upper end of compass 2 and gravity pointer 10 movingly; These parts are packed in the annulus 5, and two first rotating shafts, the 3 free-ended balls 4 and the circular chute 6 of annulus 5 inboards are slidingly matched, position angle index dial 1 remains horizontality under the effect of gravity; Corresponding with the upper end compass 2 movingly of gravity pointer 10 with the scale of position angle index dial 1, indicate azimuth value; Be vertically connected on that gravity pointer 10 remains plumbness below position angle index dial 1 center, and corresponding with the scale of semicircle calibration loop 9 inboards, inclination angle, indicate inclination angle numerical value.

Claims

1. novel compass, comprise position angle index dial (1), be located at the compass (2) at index dial center, position angle, it is characterized in that: be respectively equipped with first rotating shaft (3) of symmetry on the wheel rim at position angle index dial (1) diameter two ends, the free end of first rotating shaft is ball (4); The free-ended ball of first rotating shaft (3) (4) of two symmetries is slidingly matched with the circular chute (6) of annulus (5) inboard, and the outside of annulus (5) is fixed on medianly zygomorphic first support of bearing (7) (8); Be provided with an inclination angle semicircle calibration loop (9) with annulus (5) maintenance plumbness before and after the bearing (7) on monosymmetric second supports (12); Central vertical below position angle index dial (1) is connected with a gravity pointer (10), and the gravity pointer is corresponding with the scale of inclination angle semicircle calibration loop (9) inboard.

2. a kind of novel compass according to claim 1, it is characterized in that: the two ends in inclination angle semicircle calibration loop (9) outside are provided with second rotating shaft (11) of symmetry, and second rotating shaft of two symmetries cooperates with bearing (13) on being located at bearing (7) monosymmetric second supports in front and back (12).

3. a kind of novel compass according to claim 1 and 2 is characterized in that: the ultimate range between the free-ended balls of two first rotating shafts (3) (4) on connection orientation horn craving scale (1) wheel rim is slightly less than the interior circular diameter of annulus (5).

4. a kind of novel compass according to claim 2 is characterized in that: the slightly larger in diameter of inclination angle semicircle calibration loop (9) is in the diameter of position angle index dial (1).

5. a kind of novel compass according to claim 2 is characterized in that: the bearing (13) that is located on bearing (7) monosymmetric second supports in front and back (12) is sliding bearing or is rolling bearing.