CN216846112U

CN216846112U - Height measuring device

Info

Publication number: CN216846112U
Application number: CN202220177732.8U
Authority: CN
Inventors: 陶础恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-06-28
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a height indicator, which comprises a liftable bracket and a measuring component arranged at the upper end of the bracket, wherein the measuring component comprises a rotating part, an adjusting mechanism, a laser emitter and a digital display inclinometer; the rotating part can be rotatably arranged, and the axis of rotation is transverse to the bracket; the adjusting mechanism is connected with the rotating part and used for rotating the rotating part; the laser emitter and the digital display inclinometer are respectively arranged on the rotating part; the optical axis of the laser emitter is perpendicular to the rotation axis of the rotating component. The laser beam is adopted to irradiate the object to be detected, and compared with visual observation, the result is more accurate; the digital display inclinometer is adopted, so that the angle measurement is accurate, and the angle can be directly read from the liquid crystal display screen; the support of the height indicator can be lifted, and can support various measuring methods.

Description

Height measuring device

Technical Field

The utility model relates to a measuring appliance, in particular to altimeter.

Background

The simple height measuring device can be manufactured by utilizing the protractor and the plumb line, and the specific method is that the circle center of the protractor is rotatably connected to the upper end of a rod, and the protractor can freely rotate around the circle center. The plumb line is connected with the circle center of the protractor and naturally droops. In a natural state, the radius of the protractor is in a horizontal state due to the action of gravity. When the height is measured, the height indicator is placed at a position far away from the object, and the distance from the height indicator to the object to be measured is measured. And rotating the protractor, confirming that the radius of the protractor and the top end of the object to be measured are in a straight line in a visual mode, and recording the reading of the protractor indicated by the plumb line. And then, rotating the protractor, confirming that the radius of the protractor and the lower end of the object to be measured are in the same straight line in the same visual mode, and recording the reading of the protractor indicated by the plumb line. And calculating the height of the object to be measured by utilizing a trigonometric function according to the distance to the object to be measured and the angles measured twice. The simple height indicator adopts visual reference finding, and has larger deviation.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of the prior art, the utility model provides a height measuring device, which comprises a liftable bracket and a measuring component arranged at the upper end of the bracket, wherein the measuring component comprises a rotating part, an adjusting mechanism, a laser emitter and a digital display inclinometer; the rotating part can be rotatably arranged, and the axis of rotation is transverse to the bracket; the adjusting mechanism is connected with the rotating part and used for rotating the rotating part; the laser emitter and the digital display inclinometer are respectively arranged on the rotating part; the optical axis of the laser emitter is perpendicular to the rotation axis of the rotating component.

In some embodiments, the stand is configured to be liftable by a determined length so that the rotation axis of the rotating member can form a first height H with respect to the ground₁And a second, higher height H₂。

In some embodiments, the stand includes a lifter bar and three legs disposed at a lower end of the lifter bar.

In some embodiments, the lifting rod comprises a hollow lower rod and an upper rod sleeved in the lower rod, the upper end of the lower rod is provided with a first pin hole, the upper rod is provided with a second pin hole and a third pin hole which are arranged at intervals, and the lower rod is connected with the upper rod through a bolt.

In some embodiments, the adjustment mechanism includes a housing, a handle, a worm in linkage with the handle, a worm gear in engagement with the worm, a shaft coaxially connected with the worm gear and extending along a rotational axis of the rotating member, the rotating member being disposed on the shaft.

In some embodiments, the digital display inclinometer is configured such that when the rotating member is rotated until the laser beam emitted by the laser transmitter is horizontal, the display inclinometer has a display of 0 °.

In some embodiments, the rotatable member is provided with indicia, and the altimeter further comprises a fixed pointer, the relative position of the indicia and the pointer being arranged such that the pointer indicates the indicia when the laser beam emitted by the laser emitting device is in a horizontal position.

In some embodiments, the telescope is connected with a universal ball seat, and the universal ball seat is arranged on the box body.

The utility model discloses a height finder's beneficial effect is: the laser beam is adopted to irradiate the object to be detected, and compared with visual observation, the result is more accurate; the digital display inclinometer is adopted, so that the angle measurement is accurate, and the angle can be directly read from the liquid crystal display screen; the support of the height indicator can be lifted, and can support various measuring methods.

Drawings

Fig. 1 schematically shows a side view of a height gauge according to an embodiment of the invention.

Fig. 2 schematically shows a structural schematic diagram of a measuring assembly of a height gauge according to an embodiment of the present invention.

Fig. 3 schematically shows a side view of a height gauge according to an embodiment of the invention.

Fig. 4 schematically shows a part of an exploded view of a lifting rod of a height gauge according to an embodiment of the present invention.

Fig. 5 schematically shows a measuring method of the height gauge according to an embodiment of the present invention.

Fig. 6 schematically shows another measuring method of the height gauge according to an embodiment of the present invention.

The symbol specification:

the device comprises a support 1, a measuring assembly 2, a rotating part 3, an adjusting mechanism 4, a laser emitter 5, a digital display inclinometer 6, a rotating axis 7, a lifting rod 8, a support leg 9, a lower rod 10, an upper rod 11, a first pin hole 12, a second pin hole 13, a third pin hole 14, a bolt 15, a box body 16, a handle 17, a worm 18, a worm gear 19, a rotating shaft 20, a laser beam 21, a mark 22, a pointer 23, a telescope 25, a universal ball 26 and an object 27 to be measured

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, according to a preferred embodiment of the present disclosure, the height gauge includes a liftable bracket 1 and a measuring assembly 2 disposed at an upper end of the bracket 1. Referring to fig. 2, the measuring assembly 2 includes a rotating member 3, an adjusting mechanism 4, a laser transmitter 5, and a digital inclinometer 6. The turning part 3 is rotatably arranged with the turning axis 7 transverse to the holder 1. The adjusting mechanism 4 is connected to the rotating member 3 for rotating the rotating member 3. The laser emitter 5 and the digital inclinometer 6 are respectively arranged on the rotating part 3, and the optical axis of the laser emitter 5 is vertical to the rotating axis 7 of the rotating part 3.

The stand 1 is constructed to be liftable by a determined length so that the rotation axis 7 of the rotation member 3 can form a first height H with respect to the ground₁And a second, higher height H₂. For example, referring to fig. 1, the bracket 1 includes a lifting rod 8 and three support legs 9 disposed at a lower end of the lifting rod 8. The measuring assembly 2 is fixed to the upper end of the lifting bar 8, and the triangular feet 9 enable the stand 1 to stand stably on the ground. Further, referring to fig. 4, the lifting rod 8 includes a hollow lower rod 10 and an upper rod 11 sleeved in the lower rod 10, the upper end of the lower rod 10 is provided with a first pin hole 12, the upper rod 11 is provided with a second pin hole 13 and a third pin hole 14 which are arranged at intervals, and the lower rod 10 is connected with the upper rod 11 through a pin 15. When the second pin hole 13 is aligned with the first pin hole 12 and the plug pin 15 penetrates through the two pin holes, the rotation axis 7 of the rotating member 3 is maintained at the first height H₁(ii) a When the third pin hole 14 is aligned with the first pin hole 12 and the plug pin 15 penetrates through the two pin holes, the rotation axis 7 of the rotating member 3 is maintained at the second height H₂。

The adjustment mechanism 4 is configured to be manually operated by a person to rotate the turning part 3 about its turning axis 7. For example, referring to fig. 2, the adjusting mechanism 4 includes a box 16, a handle 17, a worm 18, a worm wheel 19, and a shaft 20, wherein the worm wheel 19, the worm 18, and the shaft 20 are disposed in the box 16. The worm 18 is rotatable about its central axis, for example the worm 18 is connected to a ball bearing. The rotary shaft 20 extends in the direction of the axis of rotation 7 of the rotary member 3 and is configured to be rotatable about the axis of rotation 7, for example, the rotary shaft 20 is mounted on a ball bearing. One end of the rotary shaft 20 extends out of the case 16 and is connected to the rotary member 3. The handle 17 is connected to a worm 18, the worm 18 is engaged with a worm wheel 19, and the worm wheel 19 is coaxially fixed to a rotary shaft 20. When the handle 17 is turned, the worm 18 rotates the worm wheel 19, which causes the turning part 3 to turn around its axis of rotation 7. The worm wheel 19 and the worm 18 have self-locking property and can keep the rotating member 3 at a rotated angle.

The rotating part 3 supports a laser emitter 5 and a digital inclinometer 6. Alternatively, the rotary member 3 has a disk shape. The laser emitter 5 may be a laser pointer for generating a laser beam 21 which is fitted parallel to the tangential direction of the disc at the edge of the disc, e.g. the laser emitter 5 is mounted on a laser emitter mount at the edge of the disc. The digital display inclinometer 6 is mounted on an inclinometer mount at the edge of the disk for detecting the angle of inclination of the laser beam 21 with respect to the horizontal. The digital display inclinometer 6 is internally provided with precision measurement devices such as an MEMS gyroscope and the like, the measurement of the inclination angle can be accurate to 0.01 degree or even higher precision, and the measurement result can be directly displayed on a liquid crystal display screen. Specifically, the digital display inclinometer 6 is set such that when the rotating member 3 rotates until the laser beam 21 emitted from the laser emitter 5 is horizontal, the display of the digital display inclinometer 6 becomes 0 °. In the initialization state, the laser emitter 5 and the digital display inclinometer 6 are both in a horizontal state, the laser beam 21 emitted by the laser emitter 5 is horizontal, and the reading of the digital display inclinometer 6 is 0 °. When the rotating component 3 rotates for an angle, the laser emitter 5 and the digital display inclinometer 6 are both in an inclined state, and the digital display readings of the digital display inclinometer 6 are the inclination angle of the laser beam 21 relative to the horizontal line.

In some embodiments, referring to fig. 2, the rotating member 3 is provided with a mark 22, and the altimeter further includes a fixed pointer 23, and the relative positions of the mark 22 and the pointer 23 are set such that the pointer 23 points at the mark 22 when the laser beam 21 emitted from the laser emitter 5 is in a horizontal state. For example, the mark 22 may be a scale engraved on the edge of a disk, and the pointer 23 has one end connected to the casing 16 and the other end pointing to the edge of the disk. The marker 22 and pointer 23 of the present embodiment facilitate calibration of the digital inclinometer 6, i.e., initializing the digital inclinometer 6 to 0 ° when the pointer 23 indicates the marker 22.

In some embodiments, referring to FIG. 2, a telescope 25 is further included, and the telescope 25 is coupled to the housing 16 via a gimbaled ball 26. The telescope 25 is adjustable through 360 °. When the laser spot that has hit the object 27 to be measured is not easily recognized by the human eye, it can be confirmed through the telescope 25 whether the laser spot is actually irradiated at a desired position.

The utility model discloses a altimeter supports multiple measuring method. For example, referring to fig. 5, the distance S from the height gauge to the object to be measured is known, the laser emitter 5 is turned on, the adjusting mechanism 4 is operated to rotate the rotating member 3, when the laser beam irradiates the top of the object to be measured 27, the indication α of the digital display inclinometer 6 at that time is recorded, then the adjusting mechanism 4 is operated to rotate the rotating member 3, when the laser beam irradiates the bottom of the object to be measured 27, the indication β of the digital display inclinometer 6 at that time is recorded, and the height of the object to be measured is calculated by using the formula S · (tan α + tan β).

If the object 27 to be measured has a large transverse dimension or an irregular shape, and it is difficult to measure the distance from the height indicator to the central axis of the object 27 to be measured, the following method can be used for measurement: referring to fig. 6, the rotation axis 7 of the rotating member 3 is first maintained at the first height H₁Starting the laser emitter 5, operating the adjusting mechanism 4 to rotate the rotating part 3, and recording the reading alpha of the digital display inclinometer 6 when the laser beam irradiates the top of the object 27 to be measured; the support 1 is then raised again so that the axis of rotation 7 of the rotatable part 3 remains at the second height H₂When the rotating member 3 is rotated by operating the adjusting mechanism 4 again and the laser beam is irradiated on the top of the object 27 to be measured, the index β of the digital inclinometer 6 at this time is recorded.

Referring to FIG. 6, the measuring assembly 2 is schematically shown at a first height H₁And a second height H₂Measurement of timeA quantitative status. Suppose that the simple altimeter is standing at point O, the object 27 to be measured is located at point F, and the top of the object 27 to be measured is point E. When the rotation axis 7 is maintained at the first height H₁When the rotating axis 7 is located at the point a, the laser beam irradiates the top point E of the object 27 to be measured, and the perpendicular line from the point a to the optical axis of the laser emitter 5 is AL. When the rotation axis 7 is maintained at the second height H₂When the rotation axis 7 is located at point C, the laser beam irradiates the top E point of the object 27 to be measured, and the vertical line segment from the point C to the optical axis of the laser emitter 5 is CM. The points a and C are connected by a broken line and extended upward so that it intersects the line segment EL at the point B and intersects the extended line of the line segment EM at the point D. The horizontal line passing through point E intersects segment AC at point G. The horizontal line passing through point B intersects segment EF at point H. The lengths of AL, CM, OA, AC are known and the height EF of the object 27 can be calculated by substituting them and α and β into the formula:

the formula derivation process is as follows:

in the case of a right angle a al ABL,

in the case of a right-angle delta CDM,

since BD is BC + CD, BC is AC-AB,

therefore, it is possible to

In the case of the delta DEB, the,

therefore, it is not only easy to use

Because in Δ EBH, EH ═ BE · sin α

Therefore, it is possible to

Therefore, EF + EH + HF + OB + OA + AB

Because OA is H₁，AC＝H₂-H₁

Therefore, it is not only easy to use

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The height measuring device is characterized by comprising a liftable bracket and a measuring assembly arranged at the upper end of the bracket, wherein the measuring assembly comprises a rotating part, an adjusting mechanism, a laser emitter and a digital display inclinometer; the rotating part can be rotatably arranged, and the axis of rotation is transverse to the bracket; the adjusting mechanism is connected with the rotating component and is used for rotating the rotating component; the laser emitter and the digital display inclinometer are respectively arranged on the rotating part; and the optical axis of the laser emitter is vertical to the rotating axis of the rotating component.

2. The altimeter of claim 1, wherein the stand is configured to be elevationally determined in length to enable the axis of rotation of the rotating member to form a first height H relative to the ground₁And a second, higher height H₂。

3. The altimeter of claim 2, wherein the support comprises a lifting bar and three legs disposed at a lower end of the lifting bar.

4. The height indicator of claim 3, wherein the lifting rod comprises a hollow lower rod and an upper rod sleeved in the lower rod, a first pin hole is formed in the upper end of the lower rod, a second pin hole and a third pin hole are formed in the upper rod at intervals, and the lower rod is connected with the upper rod through a bolt.

5. The altimeter of claim 1, wherein the adjustment mechanism comprises a housing, a handle, a worm linked to the handle, a worm gear engaged with the worm, and a shaft coaxially connected to the worm gear and extending along a rotation axis of the rotary member, the rotary member being disposed on the shaft.

6. The altimeter of claim 1, wherein the digital inclinometer is arranged to count 0 ° when the rotating member is rotated until the laser beam emitted by the laser emitter is horizontal.

7. The altimeter of claim 6 wherein said rotatable member is provided with indicia, said altimeter further comprising a fixed pointer, said indicia and pointer being positioned relative to each other such that said pointer indicates said indicia when said laser beam emitted from said laser emitting device is in a horizontal position.

8. The altimeter of claim 5, further comprising a telescope coupled to a gimbaled tee disposed on the housing.