CN103441607B - A kind of interior rotation-preventing mechanism of electric cylinder with rectangular cylinder body - Google Patents
A kind of interior rotation-preventing mechanism of electric cylinder with rectangular cylinder body Download PDFInfo
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- CN103441607B CN103441607B CN201310339052.7A CN201310339052A CN103441607B CN 103441607 B CN103441607 B CN 103441607B CN 201310339052 A CN201310339052 A CN 201310339052A CN 103441607 B CN103441607 B CN 103441607B
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Abstract
The interior rotation-preventing mechanism of a kind of electric cylinder with rectangular cylinder body of the present invention, including the interior anti-rotation feed screw nut being arranged within the rectangular cylinder body of electric cylinder, interior anti-rotation feed screw nut cross section is rectangular, and coordinate with leading screw, if being inlaid with dry bearing respectively on interior anti-rotation feed screw nut at least a pair parallel sidewall from central authorities along its length；The inner ring of described bearing is fixed with the mandrel being fixed within interior anti-rotation feed screw nut, and outer ring outer surface exceeds its sidewall arranged and inwall Structure deformation corresponding with rectangular cylinder body.It realizes the anti-rotation own to oneself by the interior anti-rotation feed screw nut similar to rectangular cylinder body cross section, recycling is embedded in the bearing of interior anti-rotation feed screw nut parallel side and realizes it when moving along a straight line, realize the rolling friction that bearing outer ring contacts with rectangular cylinder body inwall line face, not only resistance is little, wear and tear little, and process simple and convenient, improve the efficiency of anti-rotation, the life-span of electric cylinder, reliability and kinematic accuracy.
Description
Technical field
The present invention relates to the anti-rotation technical field of electric cylinder, a kind of electric cylinder with rectangular cylinder body interior
Rotation-preventing mechanism.
Background technology
The reliability of electric cylinder anti-rotation mechanism and life-span are to evaluate electric cylinder reliability and the important finger in life-span
Mark.The advantages such as interior rotation-preventing mechanism compact conformation, volume are little, air-proof condition is good, have been widely used for electricity
On dynamic cylinder.But interior rotation-preventing mechanism of the prior art is all on the basis of lead screw transmission, by increasing it
Its relatively independent device realizes anti-rotation effect, and structural volume is big, and assembling arranges relatively complicated；
Be used for carrying out simultaneously due to the drive rod of electric cylinder make stretching motion time, main between rotation-preventing mechanism and drive rod
Rotation-preventing mechanism to be dependent on contacts with cylinder body sliding friction and realizes anti-rotation, and work causes anti-favourable turn for a long time
The abrasion of structure, not only can cause the fault of rotation-preventing mechanism, will also result in the reduction of electric cylinder kinematic accuracy,
Load increases, simultaneously need at cylinder interior processing key or groove, add the difficulty of processing, it is fixed to use
The section bar of system is difficult to ensure the precision of its work.
Summary of the invention
It is an object of the invention to provide the interior rotation-preventing mechanism of a kind of electric cylinder with rectangular cylinder body, it is easy to process,
Wear and tear little, it is possible to increase the service life of electric cylinder and the reliability of work.
The present invention is to be achieved through the following technical solutions:
The interior rotation-preventing mechanism of a kind of electric cylinder with rectangular cylinder body, it is characterised in that include being arranged on electric cylinder
Interior anti-rotation feed screw nut within rectangular cylinder body, interior anti-rotation feed screw nut cross section is rectangular, and along length
Direction coordinates with leading screw from central authorities, and interior anti-rotation feed screw nut at least a pair parallel sidewall is inlayed respectively
If being embedded with dry bearing；The inner ring of described bearing is fixed with the mandrel being fixed within interior anti-rotation feed screw nut,
Outer ring outer surface exceeds its sidewall arranged and inwall Structure deformation corresponding with rectangular cylinder body.
Preferably, described bearing by the recess-mounted that is arranged on interior anti-rotation feed screw nut corresponding
On sidewall.
Preferably, shaft shoulder packing ring is installed between inner ring and the groove of described bearing.
Preferably, described bearing uses needle bearing.
Preferably, the bearing being embedded on a pair parallel sidewall respectively is symmetrical set.
Preferably, the bearing being arranged on same sidewall is in being uniformly and symmetrically distributed.
Preferably, the described bearing on same sidewall has four altogether, and rectangular distribution is arranged on respective side
One end of wall.
Compared with prior art, the present invention has a following useful technique effect:
The present invention realizes oneself own by the interior anti-rotation feed screw nut similar to rectangular cylinder body cross section
Anti-rotation, recycling be embedded in the bearing of anti-rotation feed screw nut parallel side realize its when moving along a straight line,
Bearing outer ring outer surface exceeds the surface of sidewall corresponding to interior anti-rotation feed screw nut, is used for preventing feed screw nut
Surface is touched with inner surface of cylinder block generation wiping, only realizes the rolling that bearing outer ring contacts with rectangular cylinder body inwall line face
Dynamic friction, not only resistance is little, weares and teares little, and processes simple and convenient, improves the efficiency of anti-rotation, energy
The life-span of electric cylinder, reliability and kinematic accuracy is enough made to be greatly improved, it is possible to according to the life-span pair of bearing
The rotation-preventing mechanism life and reliability of electric cylinder calculates, and simplifies the structure of electric cylinder, to greatest extent
Reduce the harmful effect to electric cylinder life and reliability of the interior rotation-preventing mechanism.
Further, by the setting of groove, it is possible to ensure bearing is facilitated good lubrication；Utilize axle
Shoulder pad circle, it is possible to prevent bearing axially movable；By using needle bearing, compact conformation, Er Qiekong
Between volume little, bearing capacity is big, and can bear bigger radial load, arranges more flexible, energy
Enough according to different load, select the number of bearings of varying number；Utilize the position mode of difference arrangement,
Uniformly load can be shared, and ensure that the stability that interior anti-rotation feed screw nut moves.
Accompanying drawing explanation
Fig. 1 is the assembling structural representation of structure described in present example and electric cylinder.
Fig. 2 is structure described in present example and leading screw and the three dimensional structure schematic diagram of drive rod assembling.
Fig. 3 is the cross-sectional view in Fig. 1 at A-A.
In figure: 1 is interior anti-rotation feed screw nut, and 2 is bearing, and 3 is mandrel, and 4 is shaft shoulder packing ring, and 5 are
Rectangular cylinder body, 6 is leading screw, and 7 is drive rod, and 8 is front tab.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, described in be to the present invention
Explanation rather than restriction.
As shown in Figure 1, Figure 2 and Figure 3, the interior rotation-preventing mechanism of a kind of electric cylinder with rectangular cylinder body of the present invention,
Its rectangular cylinder body 5 being arranged on electric cylinder is internal, and its cross section is in the rectangle similar to rectangular cylinder body 5,
And coordinate with leading screw 6 from central authorities along its length；Interior anti-rotation feed screw nut 1 at least a pair parallel
It is inlaid with some to bearing 2 on sidewall respectively；The inner ring of described bearing 2 be fixed on interior anti-rotation leading screw spiral shell
Female mandrel 3 within 1 is fixed, the inwall Structure deformation that outer ring is corresponding with rectangular cylinder body 5.Preferably,
It is fixing that mandrel 3 and interior anti-rotation feed screw nut 1 use interference fit to realize, and prevents from producing in the course of the work
Axial float, it is preferred that it is fixing that mandrel 3 and bearing 2 inner ring use interference fit to realize.
Preferably, bearing 2 by the recess-mounted that is arranged on interior anti-rotation feed screw nut 1 in corresponding side
On wall；Shaft shoulder packing ring 4 is installed between inner ring and the groove of bearing 2；Bearing 2 uses needle bearing.
Preferably, the bearing 2 being embedded in respectively on a pair parallel sidewall is symmetrical set；It is arranged on
Bearing 2 on same sidewall is in being uniformly and symmetrically distributed；Four altogether, bearing 2 on same sidewall, in square
Shape distribution is arranged on one end of corresponding sidewall.
In this preferred embodiment, shown in Fig. 2 and Fig. 3, to inlay respectively on a pair parallel sidewall
Illustrating as a example by having four roller bearings, four roller bearings on same sidewall are square to be arranged on
One end of corresponding sidewall, the roller bearing on two sidewalls is also symmetrical arranged；And center on same sidewall
Direction of principal axis is identical and the roller bearing that is located on the same line, shares a mandrel 3.
During use, as depicted in figs. 1 and 2, the front end of anti-rotation feed screw nut 1 is connected by drive rod 7
Front tab 8, it is achieved the transmission to linear motion；By with the coordinating of leading screw, receive the input of power；
Utilize self profile and rectangular cylinder body 5 coordinates the purpose realizing anti-rotation, then by the setting of bearing 2
Realizing the outer ring of bearing 2 and the rolling friction of rectangular cylinder body 5, line face contacts, and rubs little, thus avoids
The serious wear that sliding friction between anti-rotation feed screw nut 1 and rectangular cylinder body 5 brings, kinematic accuracy
Low, load big problem.Bearing 2 is except by pressure radially in the course of the work, is also edge by direction
Unidirectional axial force axially outward, needle bearing can preferably adapt to this type of operating mode.During work, as long as
Bearing 2 can normally work, and the anti-rotation effect of anti-rotation feed screw nut and auxiliaring effect just can normally realize,
Therefore, it is possible to determine the life and reliability of electric cylinder according to the life-span of bearing 2.
Claims (1)
1. the interior rotation-preventing mechanism of an electric cylinder with rectangular cylinder body, it is characterised in that include being arranged on electric cylinder
The internal interior anti-rotation feed screw nut (1) of rectangular cylinder body (5), interior anti-rotation feed screw nut (1) cross section
Rectangular, interior anti-rotation feed screw nut (1) coordinates with leading screw (6) in central authorities along its length, interior anti-rotation
It is inlaid with some to bearing (2) on feed screw nut (1) at least a pair parallel sidewall respectively；Described
The inner ring of bearing (2) and the mandrel (3) being fixed on interior anti-rotation feed screw nut (1) inside are fixed, outer ring
Outer surface exceeds its sidewall arranged and inwall Structure deformation corresponding with rectangular cylinder body (5)；
Described bearing (2) is by being arranged on the recess-mounted on interior anti-rotation feed screw nut (1) in correspondence
Sidewall on；It is embedded in the bearing on a pair parallel sidewall (2) respectively to be symmetrical set；
Shaft shoulder packing ring (4) is installed between inner ring and the groove of described bearing (2)；
Described bearing (2) uses needle bearing；
It is arranged on the bearing on same sidewall (2) in being uniformly and symmetrically distributed, the described axle on same sidewall
Holding (2) and have four altogether, rectangular distribution is arranged on one end of corresponding sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310339052.7A CN103441607B (en) | 2013-08-06 | 2013-08-06 | A kind of interior rotation-preventing mechanism of electric cylinder with rectangular cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310339052.7A CN103441607B (en) | 2013-08-06 | 2013-08-06 | A kind of interior rotation-preventing mechanism of electric cylinder with rectangular cylinder body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103441607A CN103441607A (en) | 2013-12-11 |
| CN103441607B true CN103441607B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310339052.7A Active CN103441607B (en) | 2013-08-06 | 2013-08-06 | A kind of interior rotation-preventing mechanism of electric cylinder with rectangular cylinder body |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811648A (en) * | 2016-03-23 | 2016-07-27 | 武汉穆特科技有限公司 | Structure of direct-connected electric cylinder |
| CN106678283A (en) * | 2017-01-17 | 2017-05-17 | 北京因时机器人科技有限公司 | Small linear driver with position feedback function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189451A (en) * | 2005-03-31 | 2008-05-28 | Thk株式会社 | Electric actuator |
| CN201466875U (en) * | 2009-04-02 | 2010-05-12 | 中国航天科技集团公司烽火机械厂 | electromechanical actuator |
| CN201549971U (en) * | 2009-10-27 | 2010-08-11 | 捷世达企业股份有限公司 | Transmission structure of linear actuator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605075B1 (en) * | 1986-10-13 | 1989-01-27 | Rockwell Cim | LOCKING SYSTEM FOR A LINEAR DEVICE FOR QUICK ADJUSTMENT AND LOCKING OF A MOBILE PART IN RELATION TO A FIXED PART |
| JP2584982B2 (en) * | 1986-12-17 | 1997-02-26 | 博 寺町 | Hollow shaft motor with ball screw |
-
2013
- 2013-08-06 CN CN201310339052.7A patent/CN103441607B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189451A (en) * | 2005-03-31 | 2008-05-28 | Thk株式会社 | Electric actuator |
| CN201466875U (en) * | 2009-04-02 | 2010-05-12 | 中国航天科技集团公司烽火机械厂 | electromechanical actuator |
| CN201549971U (en) * | 2009-10-27 | 2010-08-11 | 捷世达企业股份有限公司 | Transmission structure of linear actuator |
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| CN103441607A (en) | 2013-12-11 |
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