CN2289202Y - Instrument for measuring curve length - Google Patents
Instrument for measuring curve length Download PDFInfo
- Publication number
- CN2289202Y CN2289202Y CN96236631U CN96236631U CN2289202Y CN 2289202 Y CN2289202 Y CN 2289202Y CN 96236631 U CN96236631 U CN 96236631U CN 96236631 U CN96236631 U CN 96236631U CN 2289202 Y CN2289202 Y CN 2289202Y
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- China
- Prior art keywords
- mileage wheel
- wheel
- mileage
- zero graduation
- graduation line
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses an instrument for measuring curve length, which is composed of a transmission mechanism composed of the connection of a mechanical revolution meter (2) and a mileage wheel (4). The mileage wheel is installed on the driving shaft of the transmission mechanism, and a driven shaft is replaced by the core shaft (6) of the mechanical revolution meter (2). When the rolling measurement on a curve of the mileage wheel is realized, the synchronous count of the mechanical revolution meter (2) can be driven by a transmission mechanism. The length of a curve can be known according to the scale on a scale ring (29) and the digits displayed by a digital code window. The utility model has the advantages of visual indication, high measuring precision, large rated measuring length, and easy use.
Description
The utility model relates to a kind of device of measuring length of curve, especially the length of curve measuring instrument of being made up of mechanical tachometer and mileage wheel.
When people need know the distance of first, second two places, measure on map earlier usually and walk Route Length from the first to the Bank B, pro rata is calculated the distance of first and second two places then.In addition, some nonstandard object is measured or when launching, need be measured the girth or the length of side earlier.To measurement above-mentioned said plane and the length of curve space, two kinds of methods are arranged at present: a kind of is original to carry out approximate measure with ruler and tape measure, and the shortcoming of this way is that error is bigger, and inconvenient; Another kind is to use five or eight formulas by the manufacturing of zhuzhou,hunan instrucment and meter plant common on market, six or five formulas and 80 type series five to use north arrow, and this north arrow has the mileage measuring mechanism.The mileage measuring mechanism is made up of mileage wheel, mileometer, mileage indicator and gear train, mileage wheel is along the institute's curve of surveying rolling, drive the mileage indicator by gear train, length of a curve is read from mileometer in position according to pointer, because the scale of mileometer was in 1: 100000,1: 50000 and three kinds of ratios divisions in 1: 75000, measure fare register on the map that is not above-mentioned three kinds of ratios, reading is not directly perceived, need convert; Pointer rotates a circle, and the mileage of mileage wheel walking has only 100 centimetres, and specified measurement length is little; The mileage measuring accuracy is lower, has only 2%.So this mileage measuring mechanism in use can not satisfy people's requirement fully.
The purpose of this utility model provides the length of curve measuring instrument that a kind of reading measurement length directly perceived, specified is big and measuring accuracy is high.
For achieving the above object, solution of the present utility model is: mechanical tachometer and mileage wheel are coupled together by gear train, and the mileage wheel is installed on the main drive shaft of gear train, and driven shaft is replaced by the axle of mechanical tachometer; According to the metric principle of mechanical tachometer, the working diameter D of mileage wheel and the ratio of gear i of gear train must satisfy formula π Di=1000; The calibration loop of mileage wheel is marked with π D bar scale mark, and optional one is the zero graduation line; Post rotation direction signal plate in the outer face of mileage wheel, the signal plate is marked with rotation direction and zero standard bit line, zero graduation line on zero standard bit line and the calibration loop is in same axial plane, rotation direction is used to indicate the rotating direction of mileage wheel, the zero standard bit line is used for determining the start position of mileage wheel on the survey curve, to reduce the collimation error; Indicate the zero graduation line at digital coplanar that shows of mechanical tachometer and mileage wheel adjacent, when the mileage wheel assembles, require on the calibration loop the zero graduation line with the zero graduation line is alignd.In length of curve measuring instrument when work,, the mileage wheel drives the axle rotation of mechanical tachometer simultaneously along the institute's curve of surveying rolling by gear train, and mechanical tachometer then can be counted synchronously.Add the number of mileage wheel high scale ring demonstration according to the numeral of digital display window demonstration and just can read the length of a curve of surveying.
The above-mentioned gear train that mechanical tachometer and mileage wheel is coupled together can directly be taken turns mileage interference and is assemblied on the axle of mechanical tachometer, mileage wheel and axle coaxial cable.At this moment, ratio of gear i=1, the working diameter D=31.83 of mileage wheel.When mileage wheel rolled along institute's curve of surveying, the axle of mechanical tachometer was rotated synchronously, thereby the drive tachometer is counted.
The above-mentioned gear train that mechanical tachometer and mileage wheel is coupled together also can be a bevel gear drive mechanism, and the interference of mileage wheel is assemblied on the main drive shaft of bevel gear drive mechanism, and driven shaft is replaced by the axle of mechanical tachometer.Because the main drive shaft and the driven shaft of bevel gear system intersect vertically, so the intersect vertical axis of mileage wheel and axle is in same plane.At this moment, ratio of gear
, the working diameter of mileage wheel
When mileage wheel during, drive mechanical tachometer by bevel gear drive mechanism and count synchronously along the institute's curve of surveying rolling.
The above-mentioned gear train that mechanical tachometer and mileage wheel is coupled together can also be a Worm and worm-wheel gearing, the interference of mileage wheel is assemblied on the worm screw, and the worm gear interference is assemblied on the axle of mechanical tachometer, the intersect vertical axis of mileage wheel and axle but not in same plane, at this moment, ratio of gear
, the working diameter of mileage wheel
When mileage wheel during, drive mechanical tachometer by Worm and worm-wheel gearing and count synchronously along the institute's curve of surveying rolling.
After adopting above-mentioned solution, because mechanical tachometer is digital the demonstration, and the numeral that demonstrates is the actual length that rolls across of mileage wheel, thus do not need to convert during reading, and also directly perceived; The calibration loop of mileage wheel is divided by π D lattice, be according to the numeral of digital window demonstration and the scale of calibration loop during reading, so measuring accuracy is higher, can reach 1 ‰; Because what mechanical tachometer was selected for use is that three figure places are above, its specified measurement length increases substantially, and can reach more than 10 meters, thereby widen range of application of the present utility model.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the front view of first embodiment of the utility model length of curve measuring instrument;
Fig. 2 is the vertical view of embodiment shown in Figure 1;
Fig. 3 is the left view of embodiment shown in Figure 1;
Fig. 4 is that the A of embodiment shown in Figure 1 is to view;
Fig. 5 is the front view of second embodiment of the utility model length of curve measuring instrument;
Fig. 6 is the vertical view of embodiment shown in Figure 5;
Fig. 7 is that the B of embodiment shown in Figure 5 is to view;
Fig. 8 is the C-C cut-open view of embodiment shown in Figure 5;
Fig. 9 is the front view of the 3rd embodiment of the utility model length of curve measuring instrument;
Figure 10 is the vertical view of embodiment shown in Figure 9;
Figure 11 is that the D of embodiment shown in Figure 9 is to view;
Figure 12 is the E-E cut-open view of embodiment shown in Figure 9.
Fig. 1 extremely length of curve measuring instrument of first embodiment shown in Figure 4 is made up of mechanical tachometer 2, mileage wheel 4 and control lever 3, mileage is taken turns 4 interference and is assemblied on the axle 6 of mechanical tachometer 2, mileage wheel 4 and axle 6 coaxial cables, at this moment, ratio of gear i=1, the working diameter D=31.83 of mileage wheel, the calibration loop 29 of mileage wheel is marked with 100 evenly divided lines, and optional one is the zero graduation line; Take turns 4 adjacents at the digital display window axial centerline of mechanical tachometer 2 and mileage and indicate zero graduation line 28, during assembling mileage wheel, require on the calibration loop 29 the zero graduation line with zero graduation line 28 is alignd; Control lever 3 is vertically fixed on the gauge stand face 27 of mechanical tachometer 2, and the effect of control lever 3 is to increase the dexterity that mileage wheel 4 is turned; When mileage wheel 4 was surveyed the curve tolling measurement along institute, axle 6 was rotated synchronously, counted thereby drive mechanical tachometer 2.
Fig. 5 forms by mechanical tachometer 2, mileage wheel 4 and with the bevel gear drive mechanism 7 that they couple together to the length of curve measuring instrument of second embodiment shown in Figure 8, and bevel gear drive mechanism 7 is installed in the right side of mechanical tachometer 2, and usefulness screw 17 is fastening; The driven shaft of bevel gear drive mechanism 7 is replaced by axle 6, driven wheel of differential 9 and flat key 8 interference are assemblied on the axle 6, status requirement by bevel gear drive on casing 14 is processed coaxial cable two holes, two holes are adorned bearing holder (housing, cover) 10 and bearing holder (housing, cover) 16 respectively, drive bevel gear 13, flat key 11 and jump ring 12 are installed on the main drive shaft 15, and main drive shaft 15 is installed in diaxon bearing sleeve 10 and 16 again and rotates flexibly; Mileage is taken turns 4 interference and is assemblied on the main drive shaft 15, because the design feature of bevel gear system, the intersect vertical axis of mileage wheel 4 and axle 6 is in same plane, at this moment, and ratio of gear
, the working diameter of mileage wheel 4
, the calibration loop 29 of mileage wheel is marked with π D bar evenly divided line, and an optional scale mark is the zero graduation line; At the digital display window coplanar of mechanical tachometer 2 and take turns 4 places adjacent to mileage and indicate zero graduation line 28, the assembling mileage was taken turns 4 o'clock, require on the calibration loop 29 the zero graduation line with zero graduation line 28 is alignd; When mileage wheel 4 is surveyed the curve tolling measurement along institute, count synchronously by the bevel gear drive mechanism mechanical tachometer 2 of 7 drives.
Fig. 9 forms by mechanical tachometer 2, mileage wheel 4 and with the Worm and worm-wheel gearing 18 that they couple together to the length of curve measuring instrument of the 3rd embodiment shown in Figure 12, Worm and worm-wheel gearing 18 is installed in the right side of mechanical tachometer 2, and is fastening with screw 26; Worm-wheel shaft is substituted by axle 6, worm gear 20 and flat key 22 interference are assemblied on the axle 6, on casing 24, press worm and gear transmission status requirement processing coaxial cable two holes, two holes are equipped with bearing holder (housing, cover) 23 and 25 respectively, cushion cover 21 is contained in and plays the axial location effect on the worm screw 19, and worm screw 19 is contained in the diaxon bearing sleeve and rotates flexibly; Mileage is taken turns 4 interference and is assemblied on the worm screw 19, because the design feature of worm and gear system, the axis of mileage wheel 4 and axle 6 is vertical mutually but not in same plane, at this moment, and ratio of gear
, the working diameter of mileage wheel
, the calibration loop 29 of mileage wheel is marked with π D bar evenly divided line, and optional one is the zero graduation line; With digital display window coplanar and take turns 4 places adjacent to mileage and indicate zero graduation line 28, the assembling mileage was taken turns 4 o'clock, require on the calibration loop 29 the zero graduation line with zero graduation line 28 is alignd; When mileage wheel 4 is surveyed the curve tolling measurement along institute, count synchronously by the mechanical tachometer 2 of Worm and worm-wheel gearing 18 drives.
Rotation direction signal plate 5 is posted in the outer face of mileage wheel 4, indicates rotation direction and zero standard bit line, and the zero graduation line on zero standard bit line and the calibration loop 29 is in same axial plane; The rotating direction of mileage wheel 4 when rotation direction is represented to measure, zero standard bit line are used for determining the start position of mileage wheel 4 on the survey curve, to reduce the collimation error.
During use, at first with mechanical tachometer 2 reset to zeros, counterclockwise rotate return-to-zero knob 1, the number of each position of digital display window all can get back to zero, with the mileage wheel 4 edge curve tolling measurements of surveying, stops to roll to the precalculated position then.The method of reading is: the number of first reading sign indicating number display window, read the number on the calibration loop 29 again, and both add up and are the length of a curve of surveying.In first embodiment, mileage wheel 4 and axle 6 coaxial cables, it is not too convenient that the fuselage of holding mechanical tachometer 2 is measured the too many curve of bend, thus added control lever 3, to improve the dexterity of operation.In the second and the 3rd embodiment, mileage wheel 4 is vertical with axle 6, and mechanical tachometer 2 also plays control lever except counting.
Certainly, the gear train that mechanical tachometer and mileage wheel is coupled together also can adopt other structure, as the spur gear power train; Equally, the rotation direction signal plate of mileage wheel end face can also indicate by the evenly divided on the calibration loop except that the mark rotation direction, perhaps increases artistic pattern and color.All these conversion all drop within the protection domain of the present utility model.
Claims (6)
1, a kind of length of curve measuring instrument of mainly forming by mechanical tachometer and mileage wheel, it is characterized in that: (4) interference of mileage wheel is assemblied on the axle (6) of mechanical tachometer (2) mileage wheel (4) and axle (6) coaxial cable; This moment ratio of gear i=1, the working diameter D=31.83 of mileage wheel (4), the calibration loop (29) of mileage wheel is marked with 100 evenly divided lines, specifying one is the zero graduation line; Indicate zero graduation line (28) in the digital display window axial centerline of mechanical tachometer (2) and mileage wheel (4) adjacent, during assembling, require on the calibration loop (29) the zero graduation line with zero graduation line (28) is alignd.
2, length of curve measuring instrument according to claim 1 is characterized in that: control lever (3) is vertically fixed on the gauge stand face (27) of mechanical tachometer (2).
3, a kind of length of curve measuring instrument of mainly forming by mechanical tachometer and mileage wheel, it is characterized in that: bevel gear drive mechanism (7) is installed in the right side of mechanical tachometer (2), and is fastening with screw (17); The driven shaft of bevel gear drive mechanism (7) is substituted by axle (6), and (4) interference of mileage wheel is assemblied on the main drive shaft (15), and mileage changes the intersect vertical axis of (4) and axle (6) in same plane; This moment ratio of gear
, the working diameter of mileage wheel (4)
The calibration loop (29) of mileage wheel is marked with π D bar evenly divided line, and specifying one is the zero graduation line; Locate to indicate to zero graduation line (28) at the digital display window coplanar of mechanical tachometer (2) and adjacent to mileage wheel (4); During assembling, require on the calibration loop (29) the zero graduation line with zero graduation line (28) is alignd.
4, length of curve measuring instrument according to claim 3 is characterized in that: driven wheel of differential (9) and flat key (8) interference are assemblied on the axle (6); Go up status requirement processing coaxial cable two holes of pressing bevel gear drive at casing (14), adorn bearing holder (housing, cover) (10) and bearing holder (housing, cover) (16) in two holes respectively, drive bevel gear (13), flat key (11) and jump ring (12) are installed on the main drive shaft (15), and main drive shaft (15) is installed in the diaxon bearing sleeve again and rotates flexibly.
5, a kind of length of curve measuring instrument of mainly forming by mechanical tachometer and mileage wheel, it is characterized in that: Worm and worm-wheel gearing (18) is installed in the right side of mechanical tachometer (2), and is fastening with screw (26); Worm-wheel shaft is substituted by axle (6), and (4) interference of mileage wheel is assemblied on the worm screw (19), and the axis of mileage wheel (4) and axle (6) is vertical mutually but do not hand in same plane; At this moment, ratio of gear
The working diameter of mileage wheel
, the calibration loop (29) of mileage wheel is marked with π D bar evenly divided line, and specifying one is the zero graduation line; Locating to indicate to zero graduation line (28) with digital display window coplanar and adjacent to mileage wheel (4); During assembling, require on the calibration loop (29) the zero graduation line with zero graduation line (28) is alignd.
6, length of curve measuring instrument according to claim 5, it is characterized in that: worm gear (20) and flat key (22) interference are assemblied on the axle (6), go up status requirement processing coaxial cable two holes of pressing the worm and gear transmission at casing (24), adorn bearing holder (housing, cover) (23) and bearing holder (housing, cover) (25) in two holes respectively, cushion cover (21) is contained on the worm screw (19), and worm screw (19) is installed in the diaxon bearing sleeve again and rotates flexibly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96236631U CN2289202Y (en) | 1996-02-12 | 1996-02-12 | Instrument for measuring curve length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96236631U CN2289202Y (en) | 1996-02-12 | 1996-02-12 | Instrument for measuring curve length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2289202Y true CN2289202Y (en) | 1998-08-26 |
Family
ID=33912412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96236631U Expired - Fee Related CN2289202Y (en) | 1996-02-12 | 1996-02-12 | Instrument for measuring curve length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2289202Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135740A (en) * | 2021-12-01 | 2022-03-04 | 国网江苏省电力有限公司连云港供电分公司 | Pipeline inspection robot |
-
1996
- 1996-02-12 CN CN96236631U patent/CN2289202Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135740A (en) * | 2021-12-01 | 2022-03-04 | 国网江苏省电力有限公司连云港供电分公司 | Pipeline inspection robot |
| CN114135740B (en) * | 2021-12-01 | 2024-03-05 | 国网江苏省电力有限公司连云港供电分公司 | Pipeline detection robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |