CN103743924B - A kind of blade rotational speed measurement mechanism - Google Patents
A kind of blade rotational speed measurement mechanism Download PDFInfo
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- CN103743924B CN103743924B CN201310646227.9A CN201310646227A CN103743924B CN 103743924 B CN103743924 B CN 103743924B CN 201310646227 A CN201310646227 A CN 201310646227A CN 103743924 B CN103743924 B CN 103743924B
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- axle
- stepped sleeve
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- nut
- blade
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- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The present invention relates to a kind of blade rotational speed measurement mechanism, it comprises stepped sleeve (1), blade (2), bolt (3), axle (4), nut (5), clutch shaft bearing (6), second bearing (7), fixed gear plate (8), thrust washer (9), speed probe (10), nut (11), sealing pad (12) and screw (13), stepped sleeve (1) inside is through hole, axle (4) is applied in the through hole of stepped sleeve (1), axle (4) one end is connected by bolt (3) with blade (2), the stepped hole at stepped sleeve (1) two ends is provided with the second bearing (7) from the inside to the outside, fixed gear plate (8) and clutch shaft bearing (6), nut (5), and by thrust washer (9) and nut (11), itself and axle (4) are locked, speed probe (10) is arranged on stepped sleeve (1) side and contacts with fixed gear plate (8).When the present invention ensures to measure, turning axle is stable does not shake, and realizes the accurate measurement of rotating speed.
Description
Technical field
The invention belongs to tachometric survey apparatus field, be specifically related to a kind of blade rotational speed measurement mechanism.
Background technology
Original paddle wheel anemometer measurement mechanism is screwed a dumbbell shape blade on the top of the axle of a Φ 8mm, length 254mm, bottom is arranged on an oilless bearing, by speed probe, the parameter of blade rotary is exported when gas blows over blade, obtain the numerical value needed for gauger.For the measurement of blade rotational speed, the shaft diameter installing blade is the smaller the better, the error brought due to the weight of axle itself like this can reduce, but the shaft diameter installing blade is little and long, intensity is difficult to ensure, very easily cause top that shake when blade place rotates is installed, cause tachometric survey distortion, thus affect measuring accuracy.
The weight that guarantee in sight can not bring because of the weight of axle causes measuring error, can ensure that again the structure little and long due to the diameter of axle effect of jitter does not occur and measure, design a kind of dual bearing structure.This structure uses simple, and precision is high, economical reliable, by installing two bearings respectively the upper and lower of axle, although ensure that the diameter of axle is little and longly also can not to shake when rotated.
Summary of the invention
When technical matters to be solved by this invention is to provide a kind of guarantee measurement, turning axle is stable does not shake, and realizes the blade rotational speed measurement mechanism of the accurate measurement of rotating speed.
The technical solution used in the present invention: a kind of blade rotational speed measurement mechanism, it comprises stepped sleeve 1, blade 2, bolt 3, axle 4, nut 5, clutch shaft bearing bearing 6, second bearing 7, fixed gear plate 8, thrust washer 9, speed probe 10, nut 11, sealing pad 12 and screw 13, stepped sleeve 1 inside is through hole, two ends are respectively arranged with two stepped holes, axle 4 is applied in the through hole of stepped sleeve 1, stepped sleeve 1 two ends stepped hole certain distance is all stretched out at the two ends of its axis 4, axle 4 one end is connected by bolt 3 with blade 2, the stepped hole of stepped sleeve 1 one end is provided with clutch shaft bearing bearing 6 and nut 5 from the inside to the outside, wherein the internal diameter of clutch shaft bearing bearing 6 and nut 5 all matches with axle 4, the stepped hole of stepped sleeve 1 other end is provided with the second bearing 7 and fixed gear plate 8 from the inside to the outside, and by thrust washer 9 and nut 11, itself and axle 4 are locked, speed probe 10 is arranged on stepped sleeve 1 side and contacts with fixed gear plate 8.
On described stepped sleeve 1, bottom is provided with sealing pad 12, and it is fixed by screw 13 and stepped sleeve 1.
Blade 2 xsect is dumb-bell shape.
Nut 5 and stepped sleeve 1 are threaded connection.
The present invention has beneficial effect: the duplex bearing blade rotational speed measurement mechanism of the present invention's design, simple and convenient, quick for installation, under guarantee does not increase turning axle weight and relatively reduces the prerequisite of weight, when ensureing to measure, turning axle is stable does not shake, and realizes the accurate measurement of rotating speed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, stepped sleeve 1 inside is diameter 5mm, the long through hole for 192.5mm, two ends are respectively the stepped hole that diameter does not wait, wherein one end of stepped sleeve 1 is provided with the shoulder hole that diameter is 16mm, high 5mm and M19X1.5mm, high 10mm, and the other end is provided with the shoulder hole of diameter 16mm, high 14mm and diameter 48mm, high 16mm, axle 4 is set to diameter 10mm, length is 38mm and diameter is 5mm, length is the multidiameter of 222mm, axle 4 is applied in the through hole of stepped sleeve 1, the diameter that clutch shaft bearing bearing 6 is arranged on axle 4 is on the axle of 5mm, then being sleeved on diameter is 16mm, in high 5mm hole, wherein the cascaded surface of axle 4 is close in a side of clutch shaft bearing bearing 6, nut 5 coordinates with the hole of the M19X1.5mm on stepped sleeve 1 axle 4 is connected on stepped sleeve 1, ensure that axle 4 is not beated in radial direction, second bearing 7 is arranged on the diameter 16mm of axle 4, in the hole of high 14mm, the small end of fixed gear plate 8 compresses the second bearing 7, the step surface of large end stand terrace and stepped sleeve 1 is fitted, the large end face of wherein fixed gear plate 8 is provided with the counterbore holding nut 11, nut 11 and thrust washer 9 are arranged in described counterbore and are fixedly connected with axle 4, make it on axle 4, there is no the play of Y-direction, ensure that axle 4 is not beated in radial direction, axle 4 is locked in stepped sleeve 1, stepped sleeve 1 bottom is provided with sealing pad 12, be fixed on stepped sleeve 1 by screw 13, blade 2 is contained on axle 4 by bolt 3, when air-flow blows blade 2, by being arranged on the number of turns speed probe 10 on stepped sleeve 1 contacting with fluted disc 8 and reads blade 2 and rotate, realize the measurement that gas flowing rotates.
Claims (4)
1. a blade rotational speed measurement mechanism, it comprises stepped sleeve (1)
,blade (2), bolt (3), axle (4), nut (5), clutch shaft bearing (6), second bearing (7), fixed gear plate (8), thrust washer (9), speed probe (10), nut (11), sealing pad (12) and screw (13), it is characterized in that: stepped sleeve (1) inside is through hole, two ends are respectively arranged with two stepped holes, axle (4) is applied in the through hole of stepped sleeve (1), stepped sleeve (1) two ends stepped hole certain distance is all stretched out at the two ends of its axis (4), axle (4) one end is connected by bolt (3) with blade (2), the stepped hole of stepped sleeve (1) one end is provided with clutch shaft bearing (6) and nut (5) from the inside to the outside, wherein the internal diameter of clutch shaft bearing (6) and nut (5) all matches with axle (4), the stepped hole of stepped sleeve (1) other end is provided with the second bearing (7) and fixed gear plate (8) from the inside to the outside, and by thrust washer (9) and nut (11), itself and axle (4) are locked, the wherein internal diameter of the second bearing (7) and fixed gear plate (8) and the equal diameters of axle (4), speed probe (10) is arranged on stepped sleeve (1) side and contacts with fixed gear plate (8).
2. a kind of blade rotational speed measurement mechanism according to claim 1, is characterized in that: the bottom of stepped sleeve (1) is provided with sealing pad (12), and it is fixed by screw (13) and stepped sleeve (1).
3. a kind of blade rotational speed measurement mechanism according to claim 1, is characterized in that: blade (2) xsect is dumb-bell shape.
4. a kind of blade rotational speed measurement mechanism according to claim 1, is characterized in that: nut (5) and stepped sleeve (1) are threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310646227.9A CN103743924B (en) | 2013-12-06 | 2013-12-06 | A kind of blade rotational speed measurement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310646227.9A CN103743924B (en) | 2013-12-06 | 2013-12-06 | A kind of blade rotational speed measurement mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103743924A CN103743924A (en) | 2014-04-23 |
| CN103743924B true CN103743924B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310646227.9A Active CN103743924B (en) | 2013-12-06 | 2013-12-06 | A kind of blade rotational speed measurement mechanism |
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| CN (1) | CN103743924B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675060B (en) * | 2016-03-04 | 2018-01-19 | 黄立新 | A kind of chimneying flow measurement device |
| CN109444461A (en) * | 2018-11-30 | 2019-03-08 | 苏州曼德克光电有限公司 | A windsock pneumatic system |
| CN110186616B (en) * | 2019-05-09 | 2022-06-24 | 大连工业大学 | A Piston Manometer That Drives Weights in a Frictionless Way |
| CN110186615B (en) * | 2019-05-09 | 2022-06-24 | 大连工业大学 | A rotary driven piston pressure gauge |
| CN111157758B (en) * | 2020-01-14 | 2022-04-19 | 湖南文理学院 | A Sponge City Wind Speed Sensor for Easy Oil Filling |
| CN114112891B (en) * | 2021-12-07 | 2024-01-12 | 北京科技大学 | High-temperature high-pressure water environment rotary electrode structural material testing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434298A (en) * | 2003-03-05 | 2003-08-06 | 天津大学 | Separated axle needle type prepeller wind gauge for measuring cylinder vortex |
| CN202271858U (en) * | 2011-10-19 | 2012-06-13 | 重庆长安汽车股份有限公司 | Real-time speed measuring device for vehicles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010059510A2 (en) * | 2008-11-23 | 2010-05-27 | Borgwarner Inc. | Fan drive system with sensor feedback |
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2013
- 2013-12-06 CN CN201310646227.9A patent/CN103743924B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434298A (en) * | 2003-03-05 | 2003-08-06 | 天津大学 | Separated axle needle type prepeller wind gauge for measuring cylinder vortex |
| CN202271858U (en) * | 2011-10-19 | 2012-06-13 | 重庆长安汽车股份有限公司 | Real-time speed measuring device for vehicles |
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| CN103743924A (en) | 2014-04-23 |
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