CN213631929U

CN213631929U - Protractor for land surveying and mapping

Info

Publication number: CN213631929U
Application number: CN202022433362.3U
Authority: CN
Inventors: 郑乐; 刘志伟; 李帅
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-07-06
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a protractor for land surveying and mapping, which comprises a mainboard, the bottom fixed mounting of mainboard has the support frame, the outside fixed mounting of carousel has the pointer, the bottom central point of mainboard puts fixed mounting has the gravity ball, the inboard fixed bearing that has cup jointed of carousel, and the outside of bearing and the outer wall of montant laminate mutually, the threaded rod has been cup jointed in the inboard activity of clamp splice, and the threaded rod has cup jointed the nut in the one end outside screw thread in the clamp splice outside. There is the support frame through the bottom movable mounting at the mainboard, because the bottom central point of mainboard puts fixed mounting and has the gravity ball, the action of gravity ball can make the mainboard remain throughout parallel with ground to it is more accurate to make the measurement. Through having the commentaries on classics board at gravity piece bottom fixed mounting, because the threaded rod is in the inboard of clamp splice, through rotating the nut for the inner wall of clamp splice laminates mutually with the outer wall of changeing the board, thereby will change the board and press from both sides tightly, make to change board and mainboard fixed, thereby convenient measurement.

Description

Protractor for land surveying and mapping

Technical Field

The utility model relates to a land measurement field specifically is a protractor for land surveying and mapping.

Background

When carrying out the land survey and drawing, need the accurate measurement land area, can make the protractor measure the angle, and current protractor is when using, because the surface of soil is rugged and uneven, leads to directly placing at the earth's surface at the protractor, great measuring error appears easily.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a protractor is used in soil survey and drawing has solved current protractor when using, because the surperficial rugged and rugged of soil is uneven, leads to directly placing at the earth's surface at the protractor, appears great measuring error's problem easily.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the protractor for land surveying and mapping comprises a main board, wherein a support frame is fixedly mounted at the bottom of the main board, a fixed frame is movably mounted at the inner side of the bottom of the support frame, a support rod is fixedly mounted at the bottom of the fixed frame, a vertical rod is fixedly mounted at the central position of the top of the main board, a turntable is movably sleeved at the outer side of the vertical rod, a pointer is fixedly mounted at the outer side of the turntable, a gravity ball is fixedly mounted at the central position of the bottom of the main board, a rotating plate is fixedly mounted at the outer side of the bottom of the gravity ball, a bearing is fixedly sleeved at the inner side of the turntable, the outer side of the bearing is attached to the outer wall of the vertical rod, a pull rod is movably sleeved at the inner side of the turntable, a spring is wound at the outer side of the pull rod, a backing plate is fixedly, and the top of the inner side of the groove plate is movably provided with a clamping block, the inner side of the clamping block is movably sleeved with a threaded rod, and the outer side of one end of the threaded rod, which is positioned at the outer side of the clamping block, is in threaded sleeve connection with a nut.

Preferably, the spring is located between the inner wall of the turntable and the backing plate.

Preferably, the backing plate is made of rubber.

Preferably, the angle of measurement of the scale plate ranges from 0 ° to 180 °.

Preferably, the inner side of the rotating plate is provided with a through groove, and the through groove is of an arc-shaped structure.

Preferably, the rotating plate is movably sleeved on the outer side of the threaded rod, and the rotating plate is located on the inner side of the clamping block.

Preferably, the bottom end of the support rod is of a conical structure.

(III) advantageous effects

The utility model provides a protractor for land surveying and mapping. The method has the following beneficial effects:

1. this protractor is used in land survey and drawing, through the bottom movable mounting at the mainboard, and the bottom inboard and the mount of support frame are swing joint, because the bottom central point of mainboard puts fixed mounting has the gravity ball for before the measurement, when inserting the earth's surface with the bracing piece, the action of gravity ball can make the mainboard remain throughout parallel with ground, thereby makes the measurement more accurate.

2. This protractor for land surveying and mapping has the commentaries on classics board through fixed mounting in gravity piece bottom, and the curved logical groove has been seted up to the inboard of commentaries on classics board, and the threaded rod is in the inboard that leads to the groove for the commentaries on classics board rotates in the outside of threaded rod, because the threaded rod is in the inboard of clamp splice, through rotating the nut, makes the inner wall of clamp splice and the outer wall of commentaries on classics board laminate mutually, thereby will change the board and press from both sides tightly, makes commentaries on classics board and mainboard fixed, thereby convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken at A of FIG. 1 according to the present invention;

FIG. 3 is a cross-sectional view taken along line B of FIG. 1 in accordance with the present invention;

fig. 4 is a side view of the rotating plate structure of the present invention.

In the figure: 1. a main board; 2. a support frame; 3. a fixed mount; 4. a gravity ball; 5. a support bar; 6. a vertical rod; 7. a turntable; 8. a pointer; 9. a scale plate; 10. a bearing; 11. a pull rod; 12. a spring; 13. a base plate; 14. a clamping block; 15. rotating the plate; 16. a threaded rod; 17. a nut; 18. a groove plate; 19. a through groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the protractor for land surveying and mapping comprises a main board 1, wherein a support frame 2 is fixedly installed at the bottom of the main board 1, a fixing frame 3 is movably installed at the inner side of the bottom of the support frame 2, a supporting rod 5 is fixedly installed at the bottom of the fixing frame 3, a vertical rod 6 is fixedly installed at the central position of the top of the main board 1, a turntable 7 is movably sleeved at the outer side of the vertical rod 6, a pointer 8 is fixedly installed at the outer side of the turntable 7, a gravity ball 4 is fixedly installed at the central position of the bottom of the main board 1, a rotating plate 15 is fixedly installed at the outer side of the bottom of the gravity ball 4, a bearing 10 is fixedly sleeved at the inner side of the turntable 7, the outer side of the bearing 10 is attached to the outer wall of the vertical rod 6, a pull rod 11 is movably sleeved at the inner side of the turntable 7, a spring 12 is, the surface fixed mounting of mainboard 1 has scale plate 9, the top fixed mounting of mount 3 has frid 18, and the inboard top movable mounting of frid 18 has clamp splice 14, threaded rod 16 has been cup jointed in the inboard activity of clamp splice 14, and threaded rod 16 is in the one end outside screw thread in the clamp splice 14 outside and has cup jointed nut 17.

The spring 12 is located between the inner wall of the turntable 7 and the backing plate 13.

The backing plate 13 is made of rubber.

The angle range of the scale plate 9 is 0 to 180 °.

The inner side of the rotating plate 15 is provided with a through groove 19, and the through groove 19 is of an arc-shaped structure.

The rotating plate 15 is movably sleeved on the outer side of the threaded rod 16, and the rotating plate 15 is positioned on the inner side of the clamping block 14.

The bottom end of the support rod 5 is of a conical structure.

During the use, insert the earth's surface with the bottom of bracing piece 5, handheld nut 17 rotates this moment, the outside laminating of nut 17 clamp splice 14, thereby make the inner wall and the laminating of commentaries on classics board 15 of clamp splice 14, pulling pull rod 11 rotates carousel 7 this moment, make pointer 8 rotate, thereby measure the angle, accomplish the back when rotating, loosen pull rod 11, pull rod 11 and backing plate 13 receive spring 12's elastic force to 6 directions of montant and remove this moment, thereby make backing plate 13 and the laminating of the outer wall of montant 6, thereby make things convenient for reading of angle.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a protractor for land surveying and mapping, includes mainboard (1), its characterized in that: the bottom of the main board (1) is fixedly provided with a support frame (2), the bottom of the support frame (2) is movably provided with a fixed frame (3) at the inner side, the bottom of the fixed frame (3) is fixedly provided with a support rod (5), the top center of the main board (1) is fixedly provided with a vertical rod (6), the outer side of the vertical rod (6) is movably sleeved with a turntable (7), the outer side of the turntable (7) is fixedly provided with a pointer (8), the bottom center of the main board (1) is fixedly provided with a gravity ball (4), the bottom outer side of the gravity ball (4) is fixedly provided with a rotating plate (15), the inner side of the turntable (7) is fixedly sleeved with a bearing (10), the outer side of the bearing (10) is attached to the outer wall of the vertical rod (6), the inner side of the turntable (7) is movably sleeved with a pull rod (11), and the outer side of, pull rod (11) are in the one end fixed mounting who is close to montant (6) and have backing plate (13), the fixed surface of mainboard (1) installs scale plate (9), the top fixed mounting of mount (3) has frid (18), and the inboard top movable mounting of frid (18) has clamp splice (14), threaded rod (16) have been cup jointed in the inboard activity of clamp splice (14), and threaded rod (16) have been cup jointed in the one end outside screw thread that is in the clamp splice (14) outside nut (17).

2. The protractor for land surveying and mapping according to claim 1, wherein: the spring (12) is arranged between the inner wall of the rotating disc (7) and the backing plate (13).

3. The protractor for land surveying and mapping according to claim 1, wherein: the backing plate (13) is made of rubber.

4. The protractor for land surveying and mapping according to claim 1, wherein: the measuring angle range of the scale plate (9) is 0-180 degrees.

5. The protractor for land surveying and mapping according to claim 1, wherein: a through groove (19) is formed in the inner side of the rotating plate (15), and the through groove (19) is of an arc-shaped structure.

6. The protractor for land surveying and mapping according to claim 5, wherein: the rotating plate (15) is movably sleeved on the outer side of the threaded rod (16), and the rotating plate (15) is located on the inner side of the clamping block (14).

7. The protractor for land surveying and mapping according to claim 1, wherein: the bottom end of the supporting rod (5) is of a conical structure.