CN111678407B - Two-point distance measuring device - Google Patents
Two-point distance measuring device Download PDFInfo
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- CN111678407B CN111678407B CN202010518976.3A CN202010518976A CN111678407B CN 111678407 B CN111678407 B CN 111678407B CN 202010518976 A CN202010518976 A CN 202010518976A CN 111678407 B CN111678407 B CN 111678407B
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- 238000005259 measurement Methods 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a two-point distance measuring device which comprises a support frame, a distance measuring instrument, a fixed shaft, a measuring arm and an angle ruler, wherein the fixed shaft is arranged at the upper end of the support frame, the angle ruler is connected with the fixed shaft through a rotating sleeve assembly, the rotating sleeve assembly can drive the angle ruler to rotate around the fixed shaft, the measuring arm is arranged on the angle ruler and is connected with the angle ruler through a rotating shaft, the measuring arm can rotate relative to the angle ruler around the rotating shaft, and the distance measuring instrument is arranged on the measuring arm. The measuring arm is driven to rotate through the rotating sleeve assembly, when the position of the first target and the position of the second target are aligned, the position of the range finder can be finely adjusted in the vertical direction respectively, and when the position of the range finder in the vertical direction is adjusted in sequence, the range finder does not influence the alignment of the first target and the second target, and the operation is convenient on the basis of improving the accuracy of the two-point distance measurement. In addition, the two-point distance measuring device only needs to be provided with one distance measuring instrument, and cost saving is facilitated.
Description
Technical Field
The invention relates to the technical field of distance measurement, in particular to a two-point distance measuring device.
Background
Two-point distance measuring devices are often used to measure the distance between two points, and the conventional two-point distance measuring devices generally have two distance measuring instruments respectively arranged on the same plane, and the two distance measuring instruments can move on the same horizontal plane to change the included angle between the two distance measuring instruments. When the distance measuring device is used specifically, the included angle between the two distance measuring devices is adjusted, the two distance measuring devices are used for respectively measuring the distance between the corresponding distance measuring device and the first target and the distance between the corresponding distance measuring device and the second target, the size of the included angle between the two distance measuring devices is read, and the distance between the first target and the second target is calculated by using a cosine law formula. When measuring, two distance measuring instruments are respectively aligned to a first target and a second target, and the two distance measuring instruments in the two-point distance measuring instrument device in the prior art only move relatively on the same horizontal plane. When the first target and the second target are located at different horizontal planes, the two distance measuring instruments are difficult to align to the first target and the second target simultaneously, and after the position of any one distance measuring instrument is changed in the vertical direction, the position of the other distance measuring instrument is also changed, the distance measuring instrument is not aligned with the actual target, and the finally obtained distance between the first target and the second target has a large error. In addition, the two-point distance measuring device in the prior art needs to be provided with two distance measuring instruments, so that the manufacturing cost of the two-point distance measuring instrument is high.
Disclosure of Invention
The invention aims to: a two-point distance measuring device is provided, which aims to solve at least one of the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the two-point distance measuring device comprises a support frame, a distance measuring instrument, a fixed shaft, a measuring arm and a protractor, wherein the fixed shaft is installed at the upper end of the support frame, the protractor is connected with the fixed shaft through a rotating sleeve assembly, the rotating sleeve assembly can drive the protractor to rotate around the fixed shaft, the measuring arm is arranged on the protractor, the measuring arm is connected with the protractor through a rotating shaft, the measuring arm can rotate around the rotating shaft relative to the protractor, and the distance measuring instrument is arranged on the measuring arm.
As a preferable technical scheme of the two-point distance measuring device, the rotating sleeve assembly includes a rotating sleeve body, the rotating sleeve body has a sleeve hole corresponding to the fixed shaft, the fixed shaft is inserted in the sleeve hole, the aperture of the sleeve hole is larger than or equal to the outer diameter of the fixed shaft, a locking threaded hole communicated with the sleeve hole is formed in the side wall of the rotating sleeve body, a first locking member is screwed in the locking threaded hole, and one end of the first locking member can abut against the fixed shaft in the sleeve hole.
As a preferable technical solution of the two-point distance measuring device, two rotating sleeve bodies are provided, the two rotating sleeve bodies are respectively distributed at intervals along the axial direction of the fixed shaft, and the rotating shaft is located between the two rotating sleeve bodies.
As a preferable technical solution of the two-point distance measuring device, a positioning block is disposed on a side surface of the measuring arm away from the angle ruler, the positioning block, the rotating shaft and the distance measuring instrument are respectively distributed at intervals along a length direction of the measuring arm, and the rotating shaft is located between the positioning block and the distance measuring instrument.
As a preferable technical solution of the two-point distance measuring device, the measuring arm is a magnetic attraction piece, the positioning block is connected to the measuring arm through a first magnet piece, and the first magnet piece and the measuring arm are attracted to each other.
As a preferable technical solution of the two-point distance measuring device, the positioning block is provided with an aiming hole corresponding to the distance measuring instrument.
As a preferable technical solution of the two-point distance measuring device, the distance measuring instrument is detachably connected to the measuring arm by a second magnet piece.
As a preferable technical solution of the two-point distance measuring device, an external thread section is provided at an upper end of the rotating shaft, and an adjusting nut which is screwed and matched with the external thread section on the rotating shaft is provided at the upper end of the rotating shaft.
As a preferable technical scheme of the two-point distance measuring device, the rotating sleeve body is a magnetic absorbing piece, and the rotating sleeve body is mutually absorbed with the angle ruler through a third magnet piece.
As a preferable technical solution of the two-point distance measuring device, a first connecting portion connected to the support frame is provided on the fixed shaft, a second connecting portion is provided at an upper end of the support frame, and the first connecting portion and the second connecting portion are detachably fastened.
The invention has the beneficial effects that: the measuring arm is driven to rotate through the rotating sleeve assembly, when the positions of the first target and the second target are aligned, the position of the range finder can be finely adjusted in the vertical direction respectively, and when the position of the range finder in the vertical direction is adjusted in sequence, the range finder is not influenced by each other when the first target and the second target are aligned, the range finder is guaranteed to be independent of each other in the operation of aligning the first target and the second target, and the operation is convenient on the basis of improving the accuracy of ranging between the two points.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic perspective view of a two-point distance measuring device according to an embodiment.
Fig. 2 is a schematic partial structural diagram of a two-point distance measuring device according to another embodiment.
Fig. 3 is a partial structural schematic view of a two-point distance measuring device according to yet another embodiment.
In the figure:
1. a fixed shaft; 2. an angle ruler; 3. a measuring arm; 4. a support frame; 401. a second connecting portion; 402. a tripod; 403. a stopper rod; 5. a limiting component; 501. a first limit protrusion; 502. a second limit convex part; 6. positioning blocks; 7. a sighting hole; 8. adjusting the nut; 9. a range finder; 10. a limiting block; 11. a first magnet piece; 12. a first connection portion; 13. connecting sleeves; 14. a first locking member; 15. a second magnet piece; 16. a third magnet piece; 17. a second locking member; 18. the rotating sleeve body.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 3, the present invention provides a two-point distance measuring device, which includes a support frame 4, a distance measuring instrument 9, a fixed shaft 1, a measuring arm 3 and a protractor 2, wherein the fixed shaft 1 is installed at an upper end of the support frame 4, the protractor 2 is connected to the fixed shaft 1 through a rotating sleeve assembly, the rotating sleeve assembly can drive the protractor 2 to rotate around the fixed shaft 1, the measuring arm 3 is disposed on the protractor 2, the measuring arm 3 is connected to the protractor 2 through a rotating shaft (not shown in the figures), the measuring arm 3 can rotate around the rotating shaft relative to the protractor 2, and the distance measuring instrument 9 is disposed on the measuring arm 3.
Because the rotating sleeve component can drive the angle ruler 2 to rotate around the fixed shaft 1 and the measuring arm 3 rotates with the angle ruler 2 through the rotating shaft, when the rotating sleeve component rotates around the fixed shaft 1, the rotating sleeve component drives the measuring arm 3 to rotate for 360 degrees around the fixed shaft 1. When the device is used specifically, the measuring arm 3 is rotated to the position where the included angle between the measuring arm 3 and the front of the angle ruler 2 is 0 degrees, the distance measuring instrument 9 is adjusted to be aligned with the first target, the distance between the distance measuring instrument 9 and the first target is recorded, then the measuring arm 3 is rotated around the rotating shaft, the measuring arm 3 is driven to rotate through the rotating shaft sleeve assembly, the distance measuring instrument 9 is aligned with the second target, the position of the measuring arm 3 is fixed, the distance between the distance measuring instrument 9 and the second target is read, the angle of the measuring arm 3 on the angle ruler 2 is read, and then the distance between the first target and the second target is calculated by utilizing a cosine theorem formula. The measuring arm 3 is driven to rotate through the rotating sleeve assembly, when the first target and the second target are aligned, the position of the distance measuring instrument 9 can be finely adjusted in the vertical direction respectively, so that the distance measuring instrument 9 is not influenced when the first target and the second target are aligned, the distance measuring instrument 9 is ensured to be independent of the operation of aligning the first target and the second target, and the operation is convenient on the basis of improving the accuracy of distance measurement between the two points. In addition, the two-point distance measuring device only needs to be provided with one distance measuring instrument 9, and cost saving is facilitated.
In this embodiment, the angle of the angle ruler 2 driven by the rotating sleeve component around the fixed shaft 1 is 0-360 degrees, so that the angle of the distance meter 9 capable of rotating around the fixed shaft 1 is 0-360 degrees.
The rotating sleeve assembly comprises a rotating sleeve body 18, the rotating sleeve body 18 is provided with a sleeve hole corresponding to the fixing shaft 1, the fixing shaft 1 is inserted into the sleeve hole, the aperture of the sleeve hole is larger than or equal to the outer diameter of the fixing shaft 1, a locking threaded hole communicated with the sleeve hole is formed in the side wall of the rotating sleeve body 18, a first locking piece 14 is connected in the locking threaded hole in a rotating mode, and one end of the first locking piece 14 can be abutted to the fixing shaft 1 in the sleeve hole.
The first locking member 14 is screwed in the adjusting threaded hole, and the length of the first locking member 14 extending into the sleeve hole is changed, so that the first locking member 14 is selectively abutted against the fixed shaft 1 in the sleeve hole. Specifically, the first locking member 14 may be a locking bolt or a locking screw, and the specific structure of the first locking member 14 is not limited herein, and any structure that can selectively stop the fixed shaft 1 from moving inside the sleeve hole may be used.
Specifically, the number of the rotating sleeve bodies 18 is two, the two rotating sleeve bodies 18 are respectively distributed at intervals along the axial direction of the fixed shaft 1, and the rotating shaft is located between the two rotating sleeve bodies 18. The angle ruler 2 is connected with the fixed shaft 1 through the two rotating sleeve bodies 18, and the two rotating sleeve bodies 18 are distributed at intervals along the axis direction of the fixed shaft 1 respectively, so that the angle ruler 2 can be prevented from inclining on the fixed shaft 1, and the angle ruler 2 is guaranteed to be parallel to the axis of the fixed shaft 1. Since the rotation shaft is arranged between the two rotation sleeve bodies 18, the risk of the angle rule 2 tilting can be reduced when the measuring arm 3 is rotated.
Furthermore, the two rotating sleeve bodies 18 are connected through a connecting piece (not shown in the figure), so that the two rotating sleeve bodies 18 form a whole, and in the specific installation process, the distance between the two rotating sleeve bodies 18 on the fixed shaft 1 does not need to be adjusted, so that the installation efficiency is improved.
As a preferred embodiment, a buffer layer (not shown) is disposed between the rotating sleeve body 18 and the fixed shaft 1. The buffer layer is arranged to prevent the rotating sleeve body 18 from scratching the fixed shaft 1 during the rotation of the fixed shaft 1; on the other hand, the friction force between the fixed shaft 1 and the first locking piece 14 is increased through the buffer layer on the outer periphery of the fixed shaft 1, so that the rotating sleeve body 18 has a certain damping feeling when driving the angle ruler 2 to rotate, and the distance measuring instrument 9 can be finely adjusted when being aligned to the second target.
One side face, deviating from the angle ruler, of the measuring arm 3 is provided with a positioning block 6, the rotating shaft and the distance measuring instrument 9 are respectively distributed in the length direction of the measuring arm 3 at intervals, and the rotating shaft is located between the positioning block 6 and the distance measuring instrument 9. Two point distance measuring device use the back for a long time, because distancer 9 is connected with bevel protractor 2 through the axis of rotation, can make measuring arm 3's atress unbalanced under the 9 action of gravity of distancer, will regard as the fulcrum with the axis of rotation, measuring arm 3 is close to the one end of bevel protractor 2 and takes place the phenomenon of upwards perk, in this embodiment, sets up locating piece 6 at the upper surface of measuring arm 3, has prevented effectively that measuring arm 3 is close to the one end perk of bevel protractor 2. In addition, increase measuring arm 3 to 2 extrusion forces of bevel protractor under the effect of locating piece 6, and then increase the frictional force between measuring arm 3 and the bevel protractor 2, can fix a position the dipperstick on bevel protractor 2 fast when rotating measuring arm 3, reduce measuring arm 3's inertia influence, be favorable to measuring arm 3's fine setting.
The measuring arm 3 is a magnetic absorption piece, the positioning block 6 is connected with the measuring arm 3 through a first magnet piece 11, and the first magnet piece 11 and the measuring arm 3 are mutually adsorbed. Specifically, the measuring arm 3 is made of at least a metal having one or more of the materials iron, nickel, and cobalt so that the measuring arm 3 can be attracted to the first magnet piece 11.
Through first magnet piece 11 and measuring arm 3 mutual adsorption, on the one hand, the dismouting locating piece 6 of being convenient for, on the other hand can adjust the concrete position of locating piece 6 on measuring arm 3 in a flexible way, need not set up the connecting hole on measuring arm 3 and can realize being connected of locating piece 6 and measuring arm 3.
First magnet piece 11 is including at least two magnet pieces that stack gradually the setting, and the quantity that the magnet piece is range upon range of can increasing as required, subtracting the range upon range of magnet piece is added to this kind of design to the holistic magnetic force of first magnet piece 11 and the whole weight of first magnet piece 11 and locating piece 6 are adjusted in a flexible way, and then adjust the frictional force size between measuring arm 3 and the angle ruler 2 in a flexible way, are favorable to finely tuning measuring arm 3.
The locating block 6 is provided with a sighting hole 7 corresponding to the distance measuring instrument 9 in a penetrating mode, and the distance measuring instrument 9 can be conveniently aligned to a target through the sighting hole 7.
The bottom of the positioning block 6 is fixedly connected with a magnet piece, or the bottom of the positioning block 6 is provided with a magnetic absorption piece, or the positioning block 6 is a magnetic absorption piece, and the positioning block 6 and the first magnet piece 11 are adsorbed mutually through the design mode.
The distance measuring device 9 is detachably connected to the measuring arm 3 via a second magnet 15. This kind of design makes things convenient for distancer 9 and measuring arm 3's dismouting. Because the measuring arm 3 for inhale the magnetism piece and distancer 9 through second magnet 15 with the connection can be dismantled to the measuring arm 3 for distancer 9 can be adsorbed on the upper surface or the lower surface of measuring arm 3, has improved the variety of distancer 9 installation, and distancer 9 can also be in measuring arm 3 optional position on the length direction in addition.
Specifically, distancer 9 is the rectangle structure, distancer 9 is including two first sides that distribute relatively and two second sides that distribute relatively, is provided with second magnet piece 15 respectively on at least one first side and at least one second side, and this kind of mode of setting can select first side or the second side of distancer 9 to adsorb on measuring arm 3 as required.
Preferably, the second magnet piece 15 is bonded to the distance meter 9 by an adhesive tape.
In order to improve the aesthetic property of the two-point distance measuring device, the second magnet piece 15 can be hidden inside the adhesive tape to prevent the second magnet piece 15 from being exposed.
As a preferable technical solution, the second magnet piece 15 is protruded from the measuring arm 3, and a mounting groove (not shown) engaged with the second magnet piece 15 is concavely provided on the measuring arm 3. The second magnet piece 15 is placed in the mounting groove, so that the distance measuring instrument 9 can be mounted in place quickly.
In this embodiment, two second magnet pieces 15 are disposed on the distance measuring device 9, and the mounting grooves correspond to the second magnet pieces 15 one to one. Of course in other embodiments the second magnet piece 15 may be arranged as one, three or four, etc.
Specifically, the measuring arm 3 is provided with a limiting block 10, and the limiting block 10 is abutted to one end of the rotating shaft, away from the distance measuring instrument 9. The stopper 10 is used to prevent the distance meter 9 from displacing toward a direction away from the rotation axis.
As a preferred embodiment, in the using process, in order to prevent the distance measuring instrument 9 from moving along the length direction of the measuring arm 3, two limit blocks 10 are provided on the same side surface of the measuring arm 3, the two limit blocks 10 are spaced apart along the length direction of the measuring arm 3, an installation position (not shown in the figure) for installing the distance measuring instrument 9 is formed between the two limit blocks 10, and after the distance measuring instrument 9 is installed at the installation position, the distance measuring instrument 9 abuts against the two limit blocks 10 at two ends of the measuring arm 3 in the length direction.
The upper end of the rotating shaft is provided with an external thread section, and the upper end of the rotating shaft is provided with an adjusting nut 8 matched with the external thread section on the rotating shaft. Through adjusting the screw thread and the external screw thread section rotating fit on the axis of rotation, adjust the interval between adjusting nut 8 and the measuring arm 3, and then change adjusting nut 8 to measuring arm 3's extrusion pressure degree, reach the adjustment and measure arm 3 and revolve the pivoted flexibility ratio of axis of rotation.
The rotating sleeve body 18 is a magnetic absorption piece, and the measuring arm 3 is located on the upper surface of the angle ruler 2, so that when the rotating sleeve body 18 is also a magnetic absorption piece, the rotating sleeve body 18 is adsorbed on the lower surface of the angle ruler 2 through the third magnet piece 16. Specifically, the rotating sleeve body 18 is made of at least one or more metals selected from the group consisting of iron, nickel, and cobalt, so that the rotating sleeve body 18 and the third magnet piece 16 can be attracted to each other.
In order to further enhance the fixing force between the angle 2 and the measuring arm 3 and the fixing shaft 1, a fourth magnet piece (not shown) may be further disposed on the connecting member, and the fourth magnet piece and the measuring arm 3 are attracted to each other.
In one embodiment, the connecting piece is provided with a containing groove for containing the fourth magnet, and the fourth magnet piece is convenient to mount due to the containing groove.
In another embodiment, the connecting piece is provided with a containing cavity for containing the fourth magnet piece, and the connecting piece with the structure can hide the fourth magnet piece in the connecting piece.
An embodiment, first connecting portion 12 is connected with fixed axle 1 through adapter sleeve 13, specifically, adapter sleeve 13 is including two stop collars of mutual butt joint, two the upper end of stop collar is provided with spacing portion, spacing portion has spacing hole, two connect the second retaining member 17 in the spacing hole soon, and the stop collar has the cover to establish the recess of the arc form outside fixed axle 1. The two connecting parts are screwed by the second locking part 17, so that the fixed shaft 1 is limited in the connecting sleeve 13, and the fixed shaft 1 is prevented from rotating and moving back and forth inside the connecting sleeve 13.
Further, the second locking member 17 may be a locking bolt or a locking screw, and the specific structure of the second locking member 17 is not limited herein, and any structure that can selectively stop the fixed shaft 1 inside the sleeve hole may be used.
In other embodiments, the connecting sleeve 13 and the fixed shaft 1 may be fixedly arranged, so that the connecting sleeve 13 and the fixed shaft 1 form a whole, and this arrangement also prevents the fixed shaft 1 from rotating and moving back and forth inside the connecting sleeve 13.
In order to prevent the two rotating sleeve bodies 18 from moving along the length direction of the fixed shaft 1, a limiting component 5 for limiting the two rotating sleeve bodies 18 is arranged on the fixed shaft 1. The limiting assembly 5 comprises a first limiting convex part 501 and a second limiting convex part 502, the first limiting convex part 501 and the second limiting convex part 502 are distributed at intervals along the length direction of the fixing shaft 1, the two rotating sleeve bodies 18 are located between the first limiting convex part 501 and the second limiting convex part 502, one of the rotating sleeve bodies 18 is abutted against the first limiting convex part 501, and the other rotating sleeve body 18 is abutted against the second limiting convex part 502, so that the two rotating sleeve bodies 18 are limited between the first limiting convex part 501 and the second limiting convex part 502.
In the present embodiment, the first limit projection 501 abuts against the rotating sleeve body 18 far from the connecting sleeve 13, and the second limit projection 502 abuts against the rotating sleeve body 18 near the connecting sleeve 13. In order to facilitate the detachment of the rotating sleeve body 18 from the fixed shaft, the first limit convex part 501 is detachably connected with the fixed shaft 1. In this embodiment, the first limiting convex part 501 is a limiting nut, and the limiting nut is matched and screwed with one end of the fixing shaft 1 far away from the connecting sleeve 13. When the angle ruler 2 needs to be detached from the fixed shaft 1, the first locking piece 14 can be rotated, so that the rotating sleeve assembly can rotate relative to the fixed shaft 1, then the limiting nut is detached from the fixed shaft 1, and then the rotating sleeve assembly is detached from one end, rotatably connected with the fixed shaft 1, of the limiting nut, so that the rotating sleeve assembly, the angle ruler 2 and the measuring arm 3 are detached from the fixed shaft 1 together. In the case of a relatively light weight measuring scale and distance measuring device 9, the first securing element 14 may also be omitted from the rotary sleeve body 18 adjacent to the limit nut.
As a preferable technical scheme, the measuring arm 3 is provided with scale marks along the length direction, and the scale marks are arranged, so that the measuring arm 3 can be detached from the fixed shaft 1 to measure the length, and the diversity of the two-point distance measuring device is increased.
The fixing shaft 1 is provided with a first connecting portion 12 connected with the support frame 4, the upper end of the support frame 4 is provided with a second connecting portion 401, and the first connecting portion 12 and the second connecting portion 401 are buckled in a detaching mode.
By the arrangement, the two-point distance measuring device can be conveniently disassembled and assembled, when field operation is carried out, the first connecting part 12 can be firstly disassembled from the second connecting part 401, and the first connecting part 12 and the second connecting part 401 are buckled after the field operation is carried out, so that the two-point distance measuring device is convenient to carry.
The supporting frame 4 comprises a tripod 402, the second connecting part 401 is arranged at the top of the tripod 402, the second connecting part 401 can rotate around the top of the tripod by 360 degrees, the included angle between the fixed shaft 1 and the horizontal plane is adjusted by rotating the second connecting part 401, and after the included angle between the fixed shaft 1 and the horizontal plane is adjusted, the second connecting part 401 is locked on the tripod 402 through a stop rod 403.
The distance between the distance meter 9 and the first target is a, the distance between the distance meter 9 and the second target is b, the angle of rotation between the first target and the second target measured by the measuring arm 3 is alpha, the distance between the distance meter 9 and the rotating shaft is x, and the distance between the first target and the second target is c. The distance between the first target and the second target is calculated according to the formula: c. C2＝(a+x)2+(b+x)2-2(a + x) (b + x) · cos α. In practice, if the distance x between the distance meter 9 and the rotating shaft is small, for example, the distance meter 9 is placed very close to the adjusting nut 8, and the distance between the distance meter 9 and the rotating shaft is ignored.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A two-point distance measuring device is characterized by comprising a support frame, a distance measuring instrument, a fixed shaft, a measuring arm and a protractor, wherein the fixed shaft is arranged at the upper end of the support frame, the protractor is connected with the fixed shaft through a rotating sleeve component, the rotating sleeve component can drive the protractor to rotate around the fixed shaft, the measuring arm is arranged on the protractor and is connected with the protractor through a rotating shaft, the measuring arm can rotate around the rotating shaft relative to the protractor, the distance measuring instrument is arranged on the measuring arm, the rotating sleeve component comprises a rotating sleeve body, the rotating sleeve body is provided with a sleeve hole corresponding to the fixed shaft, the fixed shaft is inserted in the sleeve hole, the diameter of the sleeve hole is larger than or equal to the outer diameter of the fixed shaft, and a locking threaded hole communicated with the sleeve hole is formed in the side wall of the rotating sleeve body, it has first retaining member to connect soon in the locking screw hole, the one end of first retaining member can with inside the trepanning the fixed axle supports tightly, rotate the cover body with be provided with the buffer layer between the fixed axle, measure the arm and deviate from a side of bevel protractor is provided with the locating piece, the locating piece the axis of rotation with the distancer is respectively along measure the length direction interval distribution of arm, just the axis of rotation is located the locating piece with between the distancer.
2. The two-point distance measuring device according to claim 1, wherein there are two rotating sleeve bodies, the two rotating sleeve bodies are spaced apart along the axial direction of the fixed shaft, and the rotating shaft is located between the two rotating sleeve bodies.
3. The two-point distance measuring device of claim 1, wherein the measuring arm is a magnetic attraction member, the positioning block is connected to the measuring arm via a first magnet member, and the first magnet member and the measuring arm are attracted to each other.
4. The two-point ranging device according to claim 1, wherein the positioning block is provided with an aiming hole corresponding to the range finder.
5. The two-point ranging device of claim 3 wherein the rangefinder is removably attached to the measurement arm by a second magnet piece.
6. The two-point ranging device as claimed in claim 1, wherein an upper end of the rotating shaft is provided with an external threaded section, and an upper end of the rotating shaft is provided with an adjusting nut threadedly engaged with the external threaded section of the rotating shaft.
7. The two-point distance measuring device according to claim 3, wherein the rotating sleeve body is a magnetic attracting member, and the rotating sleeve body is attracted to the angle ruler by a third magnetic member.
8. The two-point distance measuring device according to any one of claims 1 to 7, wherein the fixed shaft is provided with a first connecting portion connected to the support frame, the upper end of the support frame is provided with a second connecting portion, and the first connecting portion and the second connecting portion are detachably fastened.
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| CN101788672A (en) * | 2010-02-09 | 2010-07-28 | 卢波 | Method for determining distance between two target points |
| CN105589076A (en) * | 2015-12-14 | 2016-05-18 | 安徽工程大学 | Remote two-point ranging device and measurement method thereof |
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| CN207742341U (en) * | 2017-09-30 | 2018-08-17 | 四川省建业检验检测股份有限公司 | Height-gauge |
| US10302413B2 (en) * | 2011-04-15 | 2019-05-28 | Faro Technologies, Inc. | Six degree-of-freedom laser tracker that cooperates with a remote sensor |
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| JPH09113266A (en) * | 1995-10-24 | 1997-05-02 | Nikon Corp | Distance measuring instrument |
| CN101788672A (en) * | 2010-02-09 | 2010-07-28 | 卢波 | Method for determining distance between two target points |
| US10302413B2 (en) * | 2011-04-15 | 2019-05-28 | Faro Technologies, Inc. | Six degree-of-freedom laser tracker that cooperates with a remote sensor |
| CN105589076A (en) * | 2015-12-14 | 2016-05-18 | 安徽工程大学 | Remote two-point ranging device and measurement method thereof |
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