CN101865200A - Rotating flexible shaft supporting tube formed by asymmetrically combining single-sheet type supporting blades - Google Patents
Rotating flexible shaft supporting tube formed by asymmetrically combining single-sheet type supporting blades Download PDFInfo
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- CN101865200A CN101865200A CN 201010206018 CN201010206018A CN101865200A CN 101865200 A CN101865200 A CN 101865200A CN 201010206018 CN201010206018 CN 201010206018 CN 201010206018 A CN201010206018 A CN 201010206018A CN 101865200 A CN101865200 A CN 101865200A
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Abstract
The invention discloses a rotating flexible shaft supporting tube formed by asymmetrically combining single-sheet type supporting blades, comprising an inner tube body, elastic supporting blades and rigid supporting blades, wherein the elastic supporting blades and the rigid supporting blades are integrally and fixedly connected on the outer surface of the inner tube body, have smaller thicknesses than the thickness of the inner tube body and are respectively arranged along the length direction of the outer surface of the inner tube body; the distance between the top end parts of the elastic supporting blades and the tube center of the inner tube body is the same as the distance between the top end parts of the rigid supporting blades and the tube center of the inner tube body; the rigid supporting blades are distributed on the outer surface of the inner tube body, which corresponds to a central angle less than or equal to 180 degrees of the inner tube body; the number summation of the elastic supporting blades and the rigid supporting blades is 3-8; and the root parts of the elastic supporting blades are in single-sheet type. The invention is suitable to being used on a straight metal outer casing and a plant protecting machine with an arc bending pipe. When in use, the invention not only can prevent the followed running phenomenon, but also can prevent the inner tube body from being stuck with the rotating flexible shaft.
Description
Technical field
The present invention relates to a kind of rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array.
Background technique
All must support rotary flexible shaft with support tube in the mowing machine of equipment for plant protection, loosenning tiller, during use, support tube is inserted in the metal outer pipe, and the rotary flexible shaft transferring power is implemented operation behind the work cutter head.In the past, general support tube mainly was made of the support blade that interior tube body and interior tube body outer wall fixedly install, and support blade is consistent with the radial direction of interior tube body, support blade top and bottom thickness homogeneous.During installation, in metal outer pipe, peg graft stable in order to guarantee support blade, distance is slightly larger than the internal diameter of metal outer pipe between support blade outer end to the interior tube body center of circle, the distortion when pegging graft of interior tube body in the support tube that installs like this, rotary flexible shaft is in interior tube body during high speed rotating, the heat that rotary flexible shaft friction interior tube body inwall produces heats up support blade, support blade after the intensification is because the principle of expanding with heat and contract with cold, support blade must outside extrusion metal outer tube wall, because the high strength of metal outer pipe, support blade can't be burst metal outer pipe and outwards be out of shape, so support blade only can inwardly push interior tube body, quickened the distortion of interior tube body, and the rotary flexible shaft that continues high speed rotating continues the friction interior tube body, make interior tube body be out of shape soon and rotary flexible shaft is stuck.If have the gap between support blade and the metal outer pipe inwall, support tube easily and rotary flexible shaft generation transfer phenomenon, the outer end of the support blade metal outer pipe inwall that constantly rubs, produce vibration, reduce operation comfort, the pollution that produces a thundering noise is unfavorable for environmental protection requirement.
In order to improve, overcome above-mentioned defective, by changing the support blade mechanical structure of support tube, half Y shape, Y shape, S shape monolithic type support blade rotary flexible shaft supporting tube and triangle, rhombus, ellipse, circular biplate single-point type, biplate two point type support blade rotary flexible shaft supporting tube have been developed.In the process of the test, the rotary flexible shaft supporting tube of these models uses when the equipment for plant protection of straight shape metal jacket pipe, and the improvement of every index is very good.And the rotary flexible shaft supporting tube of these models uses when the metal jacket pipe front end has the equipment for plant protection of arc-shaped bend, wear and tear, tremble, hot-tempered sound to improve effect undesirable.
Press different parts, the counting of metal jacket pipe Fig. 1 that sections the front end arc-shaped bend of the rotary flexible shaft supporting tube that these models are housed with instrument located the position, find when checking cross section: at metal jacket pipe straight tube position, the position of rotary flexible shaft supporting tube in metal jacket pipe is placed in the middle, each support blade is evenly distributed in sleeve pipe, form is normal, holds the cylindrical cavity of rotary flexible shaft shaft core position Fig. 2 in metal jacket pipe; At metal jacket pipe arc-shaped bend position, it is the obvious deflection graph 3 of A side of Fig. 1 that the position of rotary flexible shaft supporting tube in metal jacket pipe occurred to outer arc, at outer arc is the serious bending deflection of support blade of the A side of Fig. 1, though at inner arc is that the support blade of the B side of Fig. 1 holds its shape, with the bad connection of metal-coating inner tube wall or do not reach.This material stress that is the rotary flexible shaft supporting tube distortion produces has embodied resilience trend at the arc-shaped bend place, is the stressed excessive excessive compressing that causes of support blade of the A side of Fig. 1 near metal-coating canal curvature outer arc, and support blade produces distortion.The support blade that close metal-coating canal curvature inner arc is the B side of Fig. 1 is influenced by resilience trend, reduced on the contrary the metal jacket pipe inner arc is the abutment pressure of the B side of Fig. 1, support blade and the bad connection of metal-coating inner tube wall, the discontinuity of support blade, the cylindrical cavity that makes rotary flexible shaft supporting tube is that the axle center that karat gold belongs to outer sleeve is departed from the A side of Fig. 1 to outer arc, rotary flexible shaft concentric (coaxial) rotation in the cylindrical cavity of rotary flexible shaft supporting tube changes, and friction increases.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and be adapted at straight shape metal jacket pipe and have on the equipment for plant protection of curve bend using, not only can prevent transfer phenomenon, reducing to vibrate, but also can avoid the rotary flexible shaft supporting tube of the stuck monolithic type support blade asymmetrical array of interior tube body and rotary flexible shaft.
According to technological scheme provided by the invention, the rotary flexible shaft supporting tube of described monolithic type support blade asymmetrical array, comprise interior tube body and at the outer surface one of interior tube body fixedly connected elastic support blade and rigid support blade, the thickness of elastic support blade and rigid support blade is all less than the thickness of interior tube body, elastic support blade and rigid support blade are all arranged along the length direction of interior tube body outer surface, the tip portion of elastic support blade is identical to the distance between the interior tube body die with the tip portion of rigid support blade to the distance between the interior tube body die, and the rigid support blade is distributed in the outer surface of the interior tube body of the central angle correspondence that is less than or equal to 180 ° of interior tube bodies, the total sum of elastic support blade and rigid support blade is at the 3-8 sheet, and the root of described elastic support blade is a monolithic type.
Elastic support blade and rigid support blade are uniformly distributed in the outer surface of interior tube body.
The section of described rigid support blade is rectangle.
Described elastic support blade can be the corrugated sheet support blade, and the corrugated sheet support blade is reduced gradually by its blade root portion to its leaf tip thickness.
Described elastic support blade also can comprise the first elasticity blade tip of the first rigidity blade root and biplate, the first elasticity blade tip is fixedly connected on the tip portion of the first rigidity blade root, the section of the first rigidity blade root is rectangle, and the first elasticity blade tip is reduced gradually by its root to its tip thickness.
Described elastic support blade can also comprise the second elasticity blade tip of the second rigidity blade root and monolithic, the second elasticity blade tip is fixedly connected on the tip portion of the second rigidity blade root, the section of the second rigidity blade root is rectangle, and the second elasticity blade tip is reduced gradually by its root to its tip thickness.
Be not less than the quantity of rigid support blade in the quantity of the elastic support blade of the outer surface setting of same interior tube body.
The present invention is adapted at straight shape metal jacket pipe and has on the equipment for plant protection of curve bend using, and during use, both can prevent transfer phenomenon; reduce vibration, make operation comfortable, can avoid interior tube body and rotary flexible shaft stuck again; greatly increase the service life, change simply, reduce cost.
Description of drawings
Fig. 1 is the structural representation of mowing machine, the employed bend pipe of loosenning tiller.
Fig. 2 is the C-C sectional view of Fig. 1.
Fig. 3 is the D-D sectional view of Fig. 1.
Fig. 4 is the structural representation of the embodiment of the invention 1.
Fig. 5 is the structural representation of the embodiment of the invention 2.
Fig. 6 is the structural representation of the embodiment of the invention 3.
Fig. 7 is the structural representation of the embodiment of the invention 4.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in the figure, the present invention mainly is made of parts such as interior tube body 1, rigid support blade 2, corrugated sheet support blade 3.11, the first rigidity blade root 3.21, the first elasticity blade tip 3.22, the second rigidity blade root 3.31 and the second elasticity blade tips 3.32.
The rotary flexible shaft supporting tube of this monolithic type support blade asymmetrical array, comprise interior tube body 1 and at the outer surface one of interior tube body 1 fixedly connected elastic support blade and rigid support blade 2, the thickness of elastic support blade and rigid support blade 2 is all less than the thickness of interior tube body 1, elastic support blade and rigid support blade 2 are all arranged along the length direction of interior tube body 1 outer surface, the tip portion of elastic support blade is identical to the distance between interior tube body 1 die with the tip portion of rigid support blade 2 to the distance between interior tube body 1 die, and rigid support blade 2 is distributed in the outer surface of the interior tube body 1 of the central angle correspondence that is less than or equal to 180 ° of interior tube bodies 1, the quantity sum of elastic support blade and rigid support blade 2 is at the 3-8 sheet, and the root of described elastic support blade is a monolithic type.
Elastic support blade and rigid support blade 2 are uniformly distributed in the outer surface of interior tube body 1.
The section of described rigid support blade 2 is rectangle.
Described elastic support blade can be corrugated sheet support blade 3.11, and corrugated sheet support blade 3.11 reduces gradually by its blade root portion to its leaf tip thickness, and the elastic support blade section of this moment is approximate S shape.
Described elastic support blade also can comprise the first elasticity blade tip 3.22 of the first rigidity blade root 3.21 and biplate, the first elasticity blade tip 3.22 is fixedly connected on the tip portion of the first rigidity blade root 3.21, the section of the first rigidity blade root 3.21 is rectangle, the first elasticity blade tip 3.22 is reduced gradually by its root to its tip thickness, and the elastic support blade section of this moment is approximate Y shape.
Described elastic support blade can also comprise the second elasticity blade tip 3.32 of the second rigidity blade root 3.31 and monolithic, the second elasticity blade tip 3.32 is fixedly connected on the tip portion of the second rigidity blade root 3.31, the section of the second rigidity blade root 3.31 is rectangle, the second elasticity blade tip 3.32 is reduced gradually by its root to its tip thickness, and the elastic support blade section of this moment is approximate half Y shape.
Be not less than the quantity of rigid support blade 2 in the quantity of the elastic support blade of the outer surface setting of same interior tube body 1.
The consistency of thickness of rigid support blade 2 from the root to the leaf tip increased the mechanical strength of blade self, and rigid support blade 2 is radially consistent with the active force and the reaction force direction of metal jacket pipe, and no tangential component is difficult for bending deflection.The outer arc position of said metal-coating canal curvature is the A position in background technique, the radial reaction force to rigid support blade 2 that resilience stress compressing metal-coating inner tube wall after the rotary flexible shaft supporting tube bending of the present invention forms is difficult to make 2 distortion of rigid support blade, interior tube body 1 cylindrical cavity of support tube is at the shaft core position of metal jacket pipe, like this, no matter rotary flexible shaft supporting tube is at the arc-shaped bend position of metal jacket pipe or at straight shape position, all is in coaxial (with one heart) position.
Section is S shape (as Fig. 4), Y shape (as Fig. 5), the mechanical structure of the elastic support blade of half Y shape (as Fig. 6) and hybrid type (as Fig. 7) possesses the advantage of two aspects: on the one hand, corrugated sheet support blade 3.11, the first elasticity blade tip 3.22 and the second elasticity blade tip, 3.32 top arcuate structures can resolve into power radial force and tangential force, when flexible axle is worked, flexible axle is high speed rotating in the tube chamber of rotary flexible shaft supporting tube, friction generates heat causes that rotary flexible shaft supporting tube expands to interior tube body 1 inwall of rotary flexible shaft supporting tube for flexible axle, the metal-coating tube wall is decomposed into radial force and tangential force to the pressure of support blade at end of blade arc place, alleviated pressure, avoided the distortion of interior tube body 1 cylindrical cavity the interior tube body 1 of rotary flexible shaft supporting tube; Tangential force make section be the elastic support blade of S shape, half Y shape and Y shape in metal jacket pipe intrinsic displacement difficulty, avoided the flexible axle transfer of rotary flexible shaft supporting tube with high speed rotating.Transfer meeting consumption of power, send ear-piercing noise, increase component wear.On the other hand, section is that the mechanical structure of the elastic support blade of S shape, half Y shape and Y shape makes support blade have superior elasticity, when rotary flexible shaft is worked, has slowed down chatter, has reduced noise, has improved comfort.
The present invention has limited rigid support blade 2 for a slice to three slice and be arranged in the scope of interior tube body 1 outer wall less than semi-circumference, the elastic support blade of S shape, half Y shape and Y shape has two to six and be arranged in the interior tube body outer wall and be not less than in the interior tube body semi-circumference scope at least, and the quantity of rigid support blade 2 accounts for rigid support blade 2 and is no more than 50% at the most with the elastic support blade amt.
Section is the top arcuate structure tip portion arcuate structure of S shape, the Y shape corrugated sheet support blade corresponding with the elastic support blade of half Y shape 3.11, the first elasticity blade tip 3.22 and the second elasticity blade tip 3.32, after the installation, top arc specific rigidity support blade 2 increases with the surface of contact of metal-coating tube wall, transmitting the heat face increases, and increases by the metal jacket pipe radiating effect; Surface of contact increases, and the frictional force of support blade and metal-coating tube wall increases, and is difficult for being subjected to displacement between rotary flexible shaft supporting tube and metal jacket pipe, has also avoided the transfer phenomenon of rotary flexible shaft supporting tube.
When the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array of the present invention is installed, rigid support blade 2 is the A position at the outer arc position of metal jacket pipe, and section is that the elastic support blade of S shape, Y shape and half Y shape is the B position at the inner arc position of metal jacket pipe.
Described interior tube body 1 is made into integration by nylon material with all support blades.
Claims (7)
1. the rotary flexible shaft supporting tube of a monolithic type support blade asymmetrical array, it is characterized in that: comprise interior tube body (1) and at the outer surface one of interior tube body (1) fixedly connected elastic support blade and rigid support blade (2), the thickness of elastic support blade and rigid support blade (2) is all less than the thickness of interior tube body (1), elastic support blade and rigid support blade (2) are all arranged along the length direction of interior tube body (1) outer surface, the tip portion of elastic support blade is identical to the distance between interior tube body (1) die with the tip portion of rigid support blade (2) to the distance between interior tube body (1) die, and rigid support blade (2) is distributed in the outer surface of the interior tube body (1) of the central angle correspondence that is less than or equal to 180 ° of interior tube bodies (1), the quantity sum of elastic support blade and rigid support blade (2) is at the 3-8 sheet, and the root of described elastic support blade is a monolithic type.
2. the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array as claimed in claim 1 is characterized in that: elastic support blade and rigid support blade (2) are uniformly distributed in the outer surface of interior tube body (1).
3. the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array as claimed in claim 1 is characterized in that: the section of described rigid support blade (2) is rectangle.
4. the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array as claimed in claim 1, it is characterized in that: described elastic support blade is corrugated sheet support blade (3.11), and corrugated sheet support blade (3.11) is reduced gradually by its blade root portion to its leaf tip thickness.
5. the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array as claimed in claim 1, it is characterized in that: described elastic support blade comprises the first elasticity blade tip (3.22) of the first rigidity blade root (3.21) and biplate, the first elasticity blade tip (3.22) is fixedly connected on the tip portion of the first rigidity blade root (3.21), the section of the first rigidity blade root (3.21) is rectangle, and the first elasticity blade tip (3.22) is reduced gradually by its root to its tip thickness.
6. the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array as claimed in claim 1, it is characterized in that: described elastic support blade comprises the second elasticity blade tip (3.32) of the second rigidity blade root (3.31) and monolithic, the second elasticity blade tip (3.32) is fixedly connected on the tip portion of the second rigidity blade root (3.31), the section of the second rigidity blade root (3.31) is rectangle, and the second elasticity blade tip (3.32) is reduced gradually by its root to its tip thickness.
7. the rotary flexible shaft supporting tube of monolithic type support blade asymmetrical array as claimed in claim 1 is characterized in that: the quantity that is not less than rigid support blade (2) in the quantity of the elastic support blade of the outer surface setting of same interior tube body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102060189A CN101865200B (en) | 2010-06-12 | 2010-06-12 | Rotating flexible shaft supporting tube formed by asymmetrically combining single-sheet type supporting blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102060189A CN101865200B (en) | 2010-06-12 | 2010-06-12 | Rotating flexible shaft supporting tube formed by asymmetrically combining single-sheet type supporting blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865200A true CN101865200A (en) | 2010-10-20 |
| CN101865200B CN101865200B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102060189A Expired - Fee Related CN101865200B (en) | 2010-06-12 | 2010-06-12 | Rotating flexible shaft supporting tube formed by asymmetrically combining single-sheet type supporting blades |
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| Country | Link |
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| CN (1) | CN101865200B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696425A (en) * | 2020-12-03 | 2021-04-23 | 歌尔科技有限公司 | Rotating shaft |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839961A (en) * | 1996-06-15 | 1998-11-24 | Andreas Stihl | Bearing arrangement for a drive shaft |
| US6314649B1 (en) * | 1999-03-11 | 2001-11-13 | Andreas Stihl Ag & Co. | Work apparatus |
| CN1604733A (en) * | 2001-12-17 | 2005-04-06 | 电气联合股份有限公司 | Shaft support |
| US20080119292A1 (en) * | 2004-04-02 | 2008-05-22 | Husqvarna Ab | Bearing Means for a Hand Held Portable Tool Such as a Brush Cutter |
| CN101403409A (en) * | 2008-10-27 | 2009-04-08 | 宋磊 | Rotating flexible axle support pipe having support blade with S-shaped section |
| CN101408218A (en) * | 2008-10-27 | 2009-04-15 | 宋磊 | Rotating flexible shaft supporting tube with supporting vane having Y-shaped section |
-
2010
- 2010-06-12 CN CN2010102060189A patent/CN101865200B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839961A (en) * | 1996-06-15 | 1998-11-24 | Andreas Stihl | Bearing arrangement for a drive shaft |
| US6314649B1 (en) * | 1999-03-11 | 2001-11-13 | Andreas Stihl Ag & Co. | Work apparatus |
| CN1604733A (en) * | 2001-12-17 | 2005-04-06 | 电气联合股份有限公司 | Shaft support |
| US20080119292A1 (en) * | 2004-04-02 | 2008-05-22 | Husqvarna Ab | Bearing Means for a Hand Held Portable Tool Such as a Brush Cutter |
| CN101403409A (en) * | 2008-10-27 | 2009-04-08 | 宋磊 | Rotating flexible axle support pipe having support blade with S-shaped section |
| CN101408218A (en) * | 2008-10-27 | 2009-04-15 | 宋磊 | Rotating flexible shaft supporting tube with supporting vane having Y-shaped section |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696425A (en) * | 2020-12-03 | 2021-04-23 | 歌尔科技有限公司 | Rotating shaft |
| CN112696425B (en) * | 2020-12-03 | 2022-04-26 | 歌尔科技有限公司 | Rotating shaft |
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| Publication number | Publication date |
|---|---|
| CN101865200B (en) | 2011-11-23 |
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