CN104501690A - Tool for measuring chord length of paddle - Google Patents
Tool for measuring chord length of paddle Download PDFInfo
- Publication number
- CN104501690A CN104501690A CN201410762836.5A CN201410762836A CN104501690A CN 104501690 A CN104501690 A CN 104501690A CN 201410762836 A CN201410762836 A CN 201410762836A CN 104501690 A CN104501690 A CN 104501690A
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- Prior art keywords
- protractor
- fixed
- calliper rule
- base
- slide calliper
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a tool for measuring chord length of a paddle. A base is provided with a mounting groove of a protractor; the center of the straight side at the upper end of the protractor is hinged on a rear end wall of a base mounting groove by a pin shaft, an arc-shaped mounting hole is formed in the lower end of the protractor; a fixing hole is formed in the position, corresponding to the arc-shaped mounting hole, of the rear end wall of the base mounting groove; the protractor is fixed in the mounting groove on the base through a fastening handle which penetrates through the arc-shaped mounting hole of the protractor and the fixing hole in the rear end wall of the base mounting groove; scales which are more precise than scales on the protractor are engraved on the side wall of the base mounting groove; when the 0-degree scale on the protractor is overlapped with the 0-degree scale on the base mounting groove, the rotary angle of the protractor is 0 degree; a caliper is fixed on the upper end face of the base; the upper end of the protractor is fixed on the lower end wall of the caliper. The tool for measuring the chord length of the paddle has a simple structure and high measurement precision, is very convenient to use, and has high working efficiency, low cost and short manufacturing period; the use requirements of researching new products are met.
Description
Technical field
The present invention relates to a kind of instrument measuring blade chord length.
Background technology
Propeller blade is the vitals of turbo oar engine power-conversion, combustion gas major part utilisable energy is changed into propeller power by engine, namely the 85%-90% of useful power passes to screw propeller and produces pulling force, the propulsive efficiency of turbo oar engine is approximately equal to the effective efficiency of screw propeller, the chord length of blade is one of important parameter of screw propeller, the whether accurate pulling force, propulsive efficiency etc. directly affecting engine of measurement.In the actual production process of blade, original survey instrument realizes by instruments such as measuring table, bevel protractor, tape, models, the crimping of the blade root of blade is fixed on measuring table, blade integral level is placed, then uses the measurements such as bevel protractor, tape and model; For keeping model bevel protractor vertical with blade-span axis, need the fixed conveyor mechanism of a set of complexity, comprise tooth bar, bearing, crossbeam, travel(l)ing rest and auxiliary body etc. nearly hundred kinds, and mostly be the part of heavy castings, high one to two grades of dimensional accuracy class requirement of these parts, the manufacturing cycle is long, and cost is high, former measurement mechanism volume is large, complex structure, can not move; Time requirement in new product development process cannot be adapted to short, the requirement that cost is low.For shortening the new product lead time, reduce production cost, devise a kind of measuring error little, the time of measurement is short, and structure is simple, and easy to manufacture, the manufacturing cycle is short, and cost is low, and blade chord length survey instrument easy to use is very necessary.
Summary of the invention
Object of the present invention solves the above-mentioned problems in the prior art exactly, provides a kind of instrument measuring blade chord length, and this survey instrument structure is simple, measuring accuracy is high, simple to operate, and work efficiency is high, cost is low, and fabrication cycle is short, meets the request for utilization of new product development.
For achieving the above object, technical solution of the present invention is: a kind of instrument measuring blade chord length, comprises base, semicircular protractor, fastening handle, bearing pin and slide calliper rule; Base there is the mounting groove of protractor, straight flange center, protractor upper end by hinge on floor installation groove aft bulkhead, its lower end has arc mounting hole, the position corresponding with the arc mounting hole of protractor at floor installation groove aft bulkhead has fixed orifice, protractor, on same vertical curve, to be fixed in the mounting groove on base by the center of this fixed orifice center and bearing pin by the fastening handle be through in the fixed orifice of protractor arc mounting hole and floor installation groove aft bulkhead; The sidewall of floor installation groove is carved with the scale more accurate than the scale on protractor, when 0 ° of scale on protractor overlaps with ° scale of 0 on floor installation groove, the anglec of rotation of protractor is 0 °, and now the straight flange of protractor is in horizontality; The upper surface of base is fixed with slide calliper rule, and there is clamp one end of slide calliper rule, and the other end has and can slide in one end of slide calliper rule band ruler scale and the movable clamp that can be locked; Protractor upper end is fixed on slide calliper rule lower end wall.
Slide calliper rule described above adopt vernier caliper, and the clamp of slide calliper rule is exactly the fixing clamping position of vernier caliper one end, and the movable clamp of the other end is the vernier of vernier caliper.Adopt the kind of calliper precision of vernier caliper higher.
Bearing pin described above is fixed on floor installation groove aft bulkhead, and straight flange center, protractor upper end has pin shaft hole, and the pin shaft hole of protractor is through on bearing pin with a gap, and by the nut gear be fixed on bearing pin.This structure fixed installation is convenient.
The structure that protractor upper end described above is fixed on slide calliper rule lower end wall is: two clamping plate leaving buckling groove between the both sides at the both ends of slide calliper rule lower end wall are fixed with respectively, protractor upper end is placed in the buckling groove between two group of two clamping plate, is locked by clamping screw.As long as unclamp bolt, protractor just can be installed and take off, and it mounts and dismounts convenient, and fixing reliability is high.
Base lower end front-rear side walls described above there is track.Like this, during use, just can be fixed on measuring table by base, it is more reliable that base is fixed, and measures and become more accurate.
The crimping of the blade root of blade is fixed on the bracing frame of measuring table, by blade horizontal suspended; Again slide calliper rule of the present invention are connected to the position that blade surveys chord length, base is fixed on measuring table, the angle of inclination that regulated quantity hornwork is installed on base, make the actual torsional angle in this cross section, place of itself and blade identical, now, the actual torsional angle in this cross section, place of angle of inclination and blade of slide calliper rule is identical, directly reads the chord length that namely size that slide calliper rule measure is this place of blade.Mobile base of the present invention is fixed on the position on measuring table, makes slide calliper rule aim at the position of another survey chord length of blade, repeats measuring process above, successively duplicate measurements, the chord length of blade each position all measured.Structure of the present invention is simple, and measuring accuracy is high, very easy to use, and work efficiency is high, and cost is low, and fabrication cycle is short, meets the request for utilization of new product development.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is the AA cut-open view of Fig. 1;
Fig. 3 is the BB cut-open view of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in Figure 1, Figure 2 and Figure 3, the present embodiment comprises base 13, semicircular protractor 1, fastening handle 10, bearing pin 9 and slide calliper rule: vernier caliper 6.Base 13 there is the mounting groove 15 of protractor.Straight flange center, protractor 1 upper end is hinged on base 13 mounting groove 15 aft bulkhead by bearing pin 9: bearing pin 9 is fixed on floor installation groove 15 aft bulkhead, straight flange center, protractor 1 upper end has pin shaft hole, the pin shaft hole of protractor 1 is through on bearing pin 9 with a gap, and by nut 8 gear be fixed on bearing pin 9.Protractor 1 lower end has arc mounting hole 12, the position corresponding with the arc mounting hole 12 of protractor at floor installation groove 15 aft bulkhead has fixed orifice, protractor 1, on same vertical curve, to be fixed on by the fastening handle 10 be through in the fixed orifice of protractor arc mounting hole 12 and floor installation groove 15 aft bulkhead in the mounting groove 15 on base 13 by the center of this fixed orifice center and bearing pin 9.The sidewall of floor installation groove 15 is carved with the scale more accurate than the scale on protractor 1, when 0 ° of scale on protractor overlaps with ° scale of 0 on floor installation groove 15, the anglec of rotation of protractor is 0 °, and now the straight flange of protractor 1 is in horizontality.The upper surface of base 13 is fixed with vernier caliper 6, and the clamp of slide calliper rule is exactly the fixing clamping position 5 of vernier caliper 6 one end, and the movable clamp of the other end is the vernier 11 of vernier caliper.Protractor 1 upper end is fixed on vernier caliper 6 lower end wall: two clamping plate 4 leaving buckling groove between the both sides at the both ends of vernier caliper 6 lower end wall are fixed with by fixed pin 3 respectively, protractor 1 upper end is placed in the buckling groove between two group of two clamping plate 4, is locked by clamping screw 2.Described base 13 lower end front-rear side walls there is track 14.Like this, during use, just can be fixed on measuring table by base, it is more reliable that base is fixed, and measures and become more accurate.7 is the blade of simulating.
Above-described embodiment is only preferred and exemplary, and those skilled in the art can do equivalent technologies according to the spirit of this patent and improve, and these all covered by the protection domain of this patent.
Claims (7)
1. measure an instrument for blade chord length, it is characterized in that: comprise base, semicircular protractor, fastening handle, bearing pin and slide calliper rule; Base there is the mounting groove of protractor, straight flange center, protractor upper end by hinge on floor installation groove aft bulkhead, its lower end has arc mounting hole, the position corresponding with the arc mounting hole of protractor at floor installation groove aft bulkhead has fixed orifice, protractor, on same vertical curve, to be fixed in the mounting groove on base by the center of this fixed orifice center and bearing pin by the fastening handle be through in the fixed orifice of protractor arc mounting hole and floor installation groove aft bulkhead; The sidewall of floor installation groove is carved with the scale more accurate than the scale on protractor, when 0 ° of scale on protractor overlaps with ° scale of 0 on floor installation groove, the anglec of rotation of protractor is 0 °, and now the straight flange of protractor is in horizontality; The upper surface of base is fixed with slide calliper rule, and there is clamp one end of slide calliper rule, and the other end has and can slide in one end of slide calliper rule band ruler scale and the movable clamp that can be locked; Protractor upper end is fixed on slide calliper rule lower end wall.
2. the instrument of measurement blade chord length according to claim 1, is characterized in that: described slide calliper rule adopt vernier caliper, and the clamp of slide calliper rule is exactly the fixing clamping position of vernier caliper one end, and the movable clamp of the other end is the vernier of vernier caliper.
3. the instrument of measurement blade chord length according to claim 1 and 2, it is characterized in that: described bearing pin is fixed on floor installation groove aft bulkhead, straight flange center, protractor upper end has pin shaft hole, the pin shaft hole of protractor is through on bearing pin with a gap, and by the nut gear be fixed on bearing pin.
4. the instrument of measurement blade chord length according to claim 3, it is characterized in that: the structure that described protractor upper end is fixed on slide calliper rule lower end wall is: two clamping plate leaving buckling groove between the both sides at the both ends of slide calliper rule lower end wall are fixed with respectively, protractor upper end is placed in the buckling groove between two group of two clamping plate, is locked by clamping screw.
5. the instrument of measurement blade chord length according to claim 4, is characterized in that: described base lower end front-rear side walls has track.
6. the instrument of measurement blade chord length according to claim 1 and 2, it is characterized in that: the structure that described protractor upper end is fixed on slide calliper rule lower end wall is: two clamping plate leaving buckling groove between the both sides at the both ends of slide calliper rule lower end wall are fixed with respectively, protractor upper end is placed in the buckling groove between two group of two clamping plate, is locked by clamping screw.
7. the instrument of measurement blade chord length according to claim 6, is characterized in that: described base lower end front-rear side walls has track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762836.5A CN104501690B (en) | 2014-12-14 | 2014-12-14 | A kind of tool measuring blade chord length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762836.5A CN104501690B (en) | 2014-12-14 | 2014-12-14 | A kind of tool measuring blade chord length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104501690A true CN104501690A (en) | 2015-04-08 |
| CN104501690B CN104501690B (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410762836.5A Active CN104501690B (en) | 2014-12-14 | 2014-12-14 | A kind of tool measuring blade chord length |
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| Country | Link |
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| CN (1) | CN104501690B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668500A (en) * | 2018-11-28 | 2019-04-23 | 惠阳航空螺旋桨有限责任公司 | A kind of blade torsional angle measuring tool |
| CN110127075A (en) * | 2019-05-22 | 2019-08-16 | 安徽卓尔航空科技有限公司 | A kind of fission propeller blade angle adjustment device |
| CN112857188A (en) * | 2021-04-15 | 2021-05-28 | 山东交通学院 | Ship propeller blade angle detection device |
| CN115507722A (en) * | 2021-06-07 | 2022-12-23 | 惠阳航空螺旋桨有限责任公司 | Device for measuring geometric dimension of paddle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2167352Y (en) * | 1993-07-16 | 1994-06-01 | 王小明 | Universal vernier instrument for drawing lines and measuring use |
| JP2001241902A (en) * | 2000-02-25 | 2001-09-07 | Shingo Takahashi | Intersecting point measuring instrument |
| CN201069347Y (en) * | 2007-07-06 | 2008-06-04 | 上海申宏量具工具厂 | Cursor omnipotent combined angle ruler |
| CN201348475Y (en) * | 2008-12-05 | 2009-11-18 | 江苏中联风能机械有限公司 | Angle gauge for vane measurement |
| CN204666068U (en) * | 2014-12-14 | 2015-09-23 | 惠阳航空螺旋桨有限责任公司 | A kind of instrument measuring blade chord length |
-
2014
- 2014-12-14 CN CN201410762836.5A patent/CN104501690B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2167352Y (en) * | 1993-07-16 | 1994-06-01 | 王小明 | Universal vernier instrument for drawing lines and measuring use |
| JP2001241902A (en) * | 2000-02-25 | 2001-09-07 | Shingo Takahashi | Intersecting point measuring instrument |
| CN201069347Y (en) * | 2007-07-06 | 2008-06-04 | 上海申宏量具工具厂 | Cursor omnipotent combined angle ruler |
| CN201348475Y (en) * | 2008-12-05 | 2009-11-18 | 江苏中联风能机械有限公司 | Angle gauge for vane measurement |
| CN204666068U (en) * | 2014-12-14 | 2015-09-23 | 惠阳航空螺旋桨有限责任公司 | A kind of instrument measuring blade chord length |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668500A (en) * | 2018-11-28 | 2019-04-23 | 惠阳航空螺旋桨有限责任公司 | A kind of blade torsional angle measuring tool |
| CN109668500B (en) * | 2018-11-28 | 2024-02-13 | 惠阳航空螺旋桨有限责任公司 | Blade torsion angle measuring tool |
| CN110127075A (en) * | 2019-05-22 | 2019-08-16 | 安徽卓尔航空科技有限公司 | A kind of fission propeller blade angle adjustment device |
| CN112857188A (en) * | 2021-04-15 | 2021-05-28 | 山东交通学院 | Ship propeller blade angle detection device |
| CN112857188B (en) * | 2021-04-15 | 2022-06-21 | 山东交通学院 | Ship propeller blade angle detection device |
| CN115507722A (en) * | 2021-06-07 | 2022-12-23 | 惠阳航空螺旋桨有限责任公司 | Device for measuring geometric dimension of paddle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104501690B (en) | 2019-03-01 |
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