CN221924847U - Portable protractor for highway bridge design - Google Patents
Portable protractor for highway bridge design Download PDFInfo
- Publication number
- CN221924847U CN221924847U CN202420622634.XU CN202420622634U CN221924847U CN 221924847 U CN221924847 U CN 221924847U CN 202420622634 U CN202420622634 U CN 202420622634U CN 221924847 U CN221924847 U CN 221924847U
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- China
- Prior art keywords
- housing
- angle
- finger rod
- highway bridge
- protractor
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- 239000002984 plastic foam Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a portable protractor for highway bridge design, which comprises a horizontal placing arm and a housing, wherein the end parts of the horizontal placing arm and the housing are hinged, the horizontal placing arm and the housing are vertically arranged, the housing is arranged outside the horizontal placing arm after rotating, a level gauge is detachably arranged on the horizontal placing arm, an angle measuring mechanism is arranged on one side of the horizontal placing arm, which is close to the hinged position, and the housing is arranged outside the horizontal placing arm after rotating and fastened by using a buckle, so that the portable protractor is convenient to carry and store and provides protection effect on the level gauge and the angle measuring mechanism; the angle measuring mechanism comprises an angle ruler and a finger rod, one end of the finger rod is sleeved on a rotating shaft, the front half section of the finger rod is folded and then accommodated in a notch of the rear half section of the finger rod, the rotating shaft is arranged at the circle center of the angle ruler, the rotating shaft is externally connected with a rough adjusting knob and is connected with a fine adjusting knob through a gear piece, the angle of the finger rod is adjusted to be approximately in a range by using the rough adjusting knob, the angle of the finger rod is finely adjusted by using the fine adjusting knob, and the measuring result is more accurate.
Description
Technical Field
The utility model relates to the technical field of protractors, in particular to a portable protractor for highway bridge design.
Background
Along with the rapid development of the economy in China, higher requirements are also put forward on transportation, before highway bridge construction, a construction scheme is designed according to the properties and requirements of road bridge lines, investigation is carried out on a construction site, angles of corresponding positions are measured by using a protractor, and a design drawing is drawn.
The protractor among the prior art comprises a plurality of components, need dismouting during the use, inconvenient carrying is accomodate, simultaneously, when measuring the angle of relevant position, measuring result inaccuracy, fine angle error just probably produces great influence to the construction effect.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides a portable protractor for highway bridge design.
The portable protractor for highway bridge design provided by the utility model adopts the following technical scheme:
The utility model provides a portable highway bridge design is with protractor, includes that the level is placed arm and housing, the level is placed arm and is articulated with the housing tip, the level is placed arm and is set up perpendicularly and the housing rotates the back cover and is established in the level and place the arm outside, the level is placed the arm and is close to articulated position one side and be provided with angle measurement mechanism.
Preferably, the angle measuring mechanism comprises an angle ruler and a finger rod, a rotating shaft is arranged at the center of the angle ruler, one end of the finger rod is sleeved on the rotating shaft, and the rotating shaft is externally connected with a rough adjusting knob and is connected with a fine adjusting knob through a gear piece.
Preferably, the front half section of the finger rod is hinged with the rear half section of the finger rod, and the front half section of the finger rod is folded and then accommodated in a notch of the rear half section of the finger rod, so that the finger rod is prevented from being bent and damaged.
Preferably, the level is placed to level and is detachably installed on the arm, the level outer end is provided with the laser head, and the level and the laser head cooperation guarantee that measuring result is accurate.
Preferably, the housing is provided with a buckle, and the inner side of the housing is provided with a plastic foam layer matched with the shapes of the angle measuring mechanism and the level meter, so that the angle measuring mechanism and the level meter are protected.
In summary, the utility model has the following beneficial technical effects:
The cover is arranged outside the horizontal placing arm after the cover is rotated and fastened by using the belt buckle, so that the protection effect on the level gauge and the angle measuring mechanism is provided while the carrying and the storage are convenient; the rough adjusting knob is used for adjusting the angle of the finger rod to a rough range, and the fine adjusting knob is used for fine adjusting the angle of the finger rod, so that the measurement result is more accurate.
Drawings
FIG. 1 is a schematic view of the portable road bridge design protractor according to embodiment 1 of the present utility model in operation;
FIG. 2 is a schematic view of a portable road bridge design protractor according to embodiment 1 of the present utility model;
FIG. 3 is an enlarged plan view of the angle gauge of embodiment 1 of the present utility model;
FIG. 4 is a schematic plan view of the inside of the housing of embodiment 1 of the present utility model;
Fig. 5 is an enlarged plan view schematically showing the angle gauge of embodiment 2 of the present utility model.
Reference numerals illustrate: 1. a horizontally placed arm; 2. a housing; 3. an angle measuring mechanism; 4. an angle ruler; 5. a finger; 6. a rotation shaft; 7. a coarse tuning knob; 8. a gear member; 9. a fine tuning knob; 10. a notch; 11. a level gauge; 12. a laser head; 13. a buckle; 14. a plastic foam layer; 15. a rotating shaft.
Detailed Description
The utility model is described in further detail below in connection with fig. 1-5.
The embodiment 1 of the utility model discloses a portable protractor for highway bridge design.
Referring to fig. 1, a portable protractor for highway bridge design, including horizontal arm 1 and housing 2 of placing, horizontal arm 1 and housing 2 tip are articulated, and horizontal arm 1 and housing 2 set up perpendicularly and housing 2 rotate the back cover and establish in horizontal arm 1 outside of placing, and horizontal arm 1 is close to articulated position one side and is provided with angle measuring mechanism 3.
Referring to fig. 1 and 3, the angle measuring mechanism 3 comprises an angle ruler 4 and a finger rod 5, wherein a quarter circle scale is arranged on the edge of the angle ruler 4, one piece of angle ruler 4 is arranged on the angle ruler 4, a rotating shaft 6 is arranged at the circle center of the angle ruler 4, one end of the finger rod 5 is sleeved on the rotating shaft 6, and the rotating shaft 6 is externally connected with a rough adjusting knob 7 and is connected with a fine adjusting knob 9 through a gear piece 8; the gear member 8 includes a plurality of gears having different diameters, wherein a gear having a large diameter is sleeved on the inner side of the coarse adjustment knob 7, and a gear having a small diameter is sleeved on the inner side of the fine adjustment knob 9, so that the rotation shaft 6 is rotated only slightly when the fine adjustment knob 9 is rotated by gear transmission.
Referring to fig. 3, the front half section of the finger 5 is hinged to the rear half section of the finger 5, the front half section of the finger 5 is folded and then accommodated in the notch 10 of the rear half section of the finger 5, and when carrying and accommodating, the front half section of the finger 5 is folded and then accommodated in the notch 10 of the rear half section of the finger 5, so that bending damage of the finger 5 with a longer length due to external force is prevented.
Referring to fig. 1, a level 11 is detachably mounted on a horizontal placement arm 1, a laser head 12 is arranged at the outer end of the level 11, a cylindrical glass tube is horizontally arranged inside the level 11, ether or alcohol is filled in the glass tube, a small bubble is reserved in the glass tube, and the horizontal placement arm 1 is horizontal when the small bubble is positioned at the top center position in the tube.
Referring to fig. 2 and 4, a buckle 13 is provided on the housing 2, when the housing 2 is covered outside the horizontal arm 1, the buckle 13 is used for fastening, a plastic foam layer 14 matched with the shapes of the angle measuring mechanism 3 and the level 11 is provided on the inner side of the housing 2, the plastic foam layer 14 has thickness and is matched with the shapes of the angle measuring mechanism 3 and the level 11, and when the housing is carried and stored, the angle measuring mechanism 3 and the level 11 are contacted with the plastic foam layer 14, so that vibration and external force transmission are reduced, and the housing has a protection function.
The implementation principle of the portable protractor for highway bridge design in the embodiment 1 of the utility model is as follows: when carrying and storing the protractor, the housing 2 is covered outside the horizontal placing arm 1 and fastened by the buckle 13, and the angle measuring mechanism 3 and the level 11 inside the protractor are contacted with the plastic foam layer 14 inside the housing 2, so that vibration and external force transmission are reduced; when the protractor is used, the housing 2 and the horizontal placement arm 1 are unfolded, the level gauge 11 is ensured to be horizontal, the angle measuring mechanism 3 is used for measuring the angle of the corresponding position, and the finger angle is adjusted through the rough adjusting knob and the fine adjusting knob, so that the angle is obtained and recorded.
Based on the embodiment 1 of the utility model, the embodiment 2 of the utility model discloses a portable protractor for highway bridge design, referring to fig. 5, the edge of an angle ruler 4 is provided with a quarter circle scale, the angle ruler 4 is provided with two angles, one side of one angle ruler 4 is vertically fixed on a horizontal placing arm 1 and is movably connected with the other angle ruler at the circle center position through a rotating shaft 15, and the two angle rulers 4 rotate to form a half circle scale.
According to the embodiment 2 of the utility model, on the basis of the embodiment 1 of the utility model, two angle scales 4 are arranged in a folding manner, the measuring range of the angle scales 4 is increased, the measuring range reaches a half circle, and the practicability is better.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (5)
1. The portable protractor for highway bridge design is characterized by comprising a horizontal placement arm (1) and a housing (2), wherein the horizontal placement arm (1) is hinged with the end part of the housing (2), the horizontal placement arm (1) and the housing (2) are vertically arranged, the housing (2) is covered outside the horizontal placement arm (1) after rotating, and an angle measuring mechanism (3) is arranged on one side of the horizontal placement arm (1) close to the hinged position.
2. A portable highway bridge design protractor according to claim 1 wherein: the angle measuring mechanism (3) comprises an angle ruler (4) and a finger rod (5), a rotating shaft (6) is arranged at the center of the angle ruler (4), one end of the finger rod (5) is sleeved on the rotating shaft (6), and the rotating shaft (6) is externally connected with a coarse adjustment knob (7) and is connected with a fine adjustment knob (9) through a gear piece (8).
3. A portable highway bridge design protractor according to claim 2 wherein: the front half section of the finger rod (5) is hinged with the rear half section of the finger rod (5), and the front half section of the finger rod (5) is contained in a notch (10) of the rear half section of the finger rod (5) after being folded.
4. A portable highway bridge design protractor according to claim 1 wherein: the horizontal placement arm (1) is detachably provided with a level meter (11), and the outer end of the level meter (11) is provided with a laser head (12).
5. The portable highway bridge design protractor according to claim 4 wherein: the buckle (13) is arranged on the housing (2), and a plastic foam layer (14) matched with the shapes of the angle measuring mechanism (3) and the level meter (11) is arranged on the inner side of the housing (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202420622634.XU CN221924847U (en) | 2024-03-28 | 2024-03-28 | Portable protractor for highway bridge design |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202420622634.XU CN221924847U (en) | 2024-03-28 | 2024-03-28 | Portable protractor for highway bridge design |
Publications (1)
Publication Number | Publication Date |
---|---|
CN221924847U true CN221924847U (en) | 2024-10-29 |
Family
ID=93206017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202420622634.XU Active CN221924847U (en) | 2024-03-28 | 2024-03-28 | Portable protractor for highway bridge design |
Country Status (1)
Country | Link |
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CN (1) | CN221924847U (en) |
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2024
- 2024-03-28 CN CN202420622634.XU patent/CN221924847U/en active Active
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