CN102588423A - Chained flexible push rod - Google Patents
Chained flexible push rod Download PDFInfo
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- CN102588423A CN102588423A CN2011100062076A CN201110006207A CN102588423A CN 102588423 A CN102588423 A CN 102588423A CN 2011100062076 A CN2011100062076 A CN 2011100062076A CN 201110006207 A CN201110006207 A CN 201110006207A CN 102588423 A CN102588423 A CN 102588423A
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- chain
- push rod
- pin
- buckle
- flexible
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Abstract
The invention discloses a chained flexible push rod which comprises four parts, namely a push rod body (1), chain bodies (2), a chain pin (3), buckles (4) and a guide slideway (7), wherein the push rod body can be any one of various traditional push rods such as hydraulic, pneumatic, electric and electro-hydraulic push rods. The chain bodies (2) are connected in series into a flexible chain by the chain pin (3); one end of the flexible chain is connected to the top end of the push rod and the other end is connected to a pushed part (6); and the flexible chain is arranged in the guide slideway (7) and can move along the smooth and bent guide slideway (7). Outside the guide slideway (7), the buckles (4) on the chain bodies (2) enable the chain bodies not to rotate relatively, and thus the chain bodies become rigid bodies; in the guide slideway (7), the buckles (4) are taken off from the chain bodies and the chain bodies (2) can rotate relatively to restore flexibility. Therefore, the force output direction of the chained flexible push rod can be changed with the curvature of the guide slideway. Through adoption of the chained flexible push rod, the problem that the stroke of the traditional push rods is limited by the mounting length is solved.
Description
Technical field
The present invention relates to a kind of chain type flexible push rod, relate to a kind of extraordinary flexible push rod that adopts the traditional push rod force direction of changing of stiff chain structure specifically.
Background technique
At present, the release end of all kinds of push rods (hydraulic push rod, air-leg, electric pushrod, Electrohydraulic push rod etc.) all is the rod member of a rigidity.Its force direction must be consistent with the axial direction of push rod.It is big more that all kinds of push rods are released stroke, and the initial length during retracted state is also big more.In the higher occasion of some requirements of installation space, the initial length of push rod maybe be bigger than giving installing space, to such an extent as to can not adopt this simple driving mode of push rod, and compelled other complicated kind of drive of using instead.In the plurality of applications occasion, just can reduce the installing space that the push rod initial length consumes if can change the direction of push rod active force.So have push rod is tilted to place, in conjunction with the line slide rail device, the swing of the generation when stretching through push rod realizes the changed course of active force.But this method not only makes push rod thrust be not fully utilized, but also complex structure.Therefore, in the practical application of push rod, press for exploitation and a kind ofly can make full use of the push rod active force, can simplify the push rod active force reversing mechanism of force transferring structure again.
Summary of the invention
Be difficult for commutating excessive with the push rod initial length and problem that influence is installed to present push rod active force, patent of the present invention has proposed a kind of chain type flexible push rod.This push rod adopts traditional push rod as former dynamic component, stretches out rod end in its rigidity and has then adopted a kind of chain type flexible member of being realized sports limiting by the guiding slideway.The guiding slideway can curve the arc with certain curvature on demand, thereby can the active force of push rod be changed to required direction, thereby can save the installing space that push rod takies because of initial length.
A kind of chain type flexible push rod of the present invention; It is characterized in that: by push rod body (1), a plurality of chain body (2), chain pin (3), buckle (4), upper saw pulley (5), be pushed object (6), the guiding slideway (7), wherein buckle (4) is made up of univesal sphere (8), return spring (9), buckle apical axis (10) and trapezoidal position limit pin (11).Guiding slideway (7) all is fixed on the frame with push rod body (1).Adjacent chain body (2) through chain pin (3) be linked together.Guarantee also that simultaneously this physical efficiency of adjacent chain rotates each other, thereby but form the chain structure of plastic deformation.
Buckle apical axis (10) cross section of buckle (4) is a polygon structure, is generally square, and making it can be the axis slip in polygonal chain pin (3) hole along the cross section equally, but can not rotate.Be that buckle apical axis (10) is a Spielpassung with chain pin (3) square hole.
When formed flexible chain is outside guiding slideway (7); The buckle apical axis (10) of buckle (4) is driven downwards by return spring (9); Trapezoidal position limit pin (11) is snapped in chain body (2) and the common dovetail groove that forms of chain pin (3); Each other rotate thereby limit adjacent chain body (2), thus make it to form one can bear push-pull effort rigid body.When formed flexible chain was in guiding slideway (7), the upper saw pulley of flexible chain both sides (5) was limited in the recessed track in guiding slideway (7) two side, and chain body (2) is limited, and upper saw pulley (5) also plays the effect of the power of reducing friction simultaneously.At this moment; The active force that the bottom of guiding slideway (7) makes univesal sphere (8) overcome return spring (9) upwards promotes buckle apical axis (10); Make trapezoidal position limit pin (11) break away from chain body (2) and the common dovetail groove that forms of chain pin (3), thereby removed the kinematic constraint to upper chain body (2), two adjacent chain bodies (2) can rotate each other; Possessed certain flexibility, can adapt to the curvature shapes of guiding slideway (7).Flexible chain in guiding slideway (7) is retrained by the shape of guiding slideway (7), can bear push-pull effort.So just can realize the switching-over of the active force of push rod body (1) through guiding slideway (7) and corresponding chain rigidity shifting mechanism.
The beneficial effect of patent of the present invention is to have proposed a kind of novel chain type flexible push rod in the linear drives field.This kind linear drives mode is simple in structure, drives reliably, installs simple and easyly, importantly can save installing space, can be applicable among all kinds of straight line driving mechanisms that property simple for structure, reliability and installing space are had higher requirements.
Description of drawings
Fig. 1 is the plan view of the embodiment of the invention.Token name is claimed among the figure: 1. push rod body, and 2. chain body 3. chain pins, 4. buckle, 5. upper saw pulley 6. is pushed object, 7. the guiding slideway.
Fig. 2 is the A-A sectional drawing among Fig. 1.
Fig. 3 is the D-D sectional drawing among Fig. 2.Token name is claimed among the figure: 8. univesal sphere, 9. return spring, 10. buckle apical axis, 11. trapezoidal position limit pins
Fig. 4 is the E-E sectional drawing among Fig. 2.
Fig. 5 is the plan view of Fig. 4.
Fig. 6 is the B-B sectional drawing among Fig. 4.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done explanation in further detail.
The exemplary embodiment of this chain type flexible push rod is as shown in Figure 1, it is characterized in that: push rod body (1) provides traditional straight line transmission, and the direction of its active force is consistent with the axis of push rod.The external part of push rod body (1) links with an end of the flexible chain that is formed by a series of chain bodies (2).The other end of flexible chain be pushed object and link.Thereby form a complete Path of Force Transfer.Guiding slideway (7) all is fixed on the frame with push rod body (1).
Single chain body (2) forms flexible chain through chain pin (3) in twos.Wherein the big end of chain pin (3) is a Spielpassung with chain body (2) near it, can freely rotate with respect to chain pin (3) to guarantee this chain body (2); The small end of chain pin (3) be interference fit near its another chain body (2) or fix through pin, form an integral body to guarantee this chain body (2) and chain pin.The step of the big end of chain pin has guaranteed that two chain bodies can not separate.
Buckle (4) is by univesal sphere (8), return spring (9), and buckle apical axis (10) and trapezoidal position limit pin (11) constitute.Its effect is to make two adjacent chain bodies become inflexible rigid body or become the flexible body that can rotate each other.In the time of in guiding slideway (7), need adjacent chain body to rotate each other, to adapt to the bending shape of guiding slideway (7).At this moment, upper saw pulley (5) has played the effect of further constraint chain body (2), makes chain body (2) can only slide the orbiting of contrary (7) sidewall along guiding.In the time of outside guiding slideway (7), need adjacent chain body to rotate each other, to bear bigger push-pull effort.The effect of buckle (4) cooperates guiding slideway (7) to realize the change of chain body flexible state exactly, thereby realizes changing the purpose of push rod force direction.
The practical implementation background is: the initial length during traditional push rod contraction state adds the upper push-rod extrusion and has surpassed the length of installation that can provide, and the linear drive scheme of simple push rod has to abandon.Adopt chain type flexible push rod of the present invention then can address this problem, it has following enforcement state:
(1) when push rod stretches out, is in the chain body that is in originally in the guiding slideway (7) and deviates to guide slideway (7).Univesal sphere (8) loses jacking force upwards, and buckle apical axis (10) moves downward under the effect of return spring (9), moves downward thereby drive trapezoidal position limit pin (11), and enters in chain body (2) and the common dovetail groove that forms of chain pin (3).Because buckle apical axis (10) can not rotate with the chain body (2) of opposite side each other, trapezoidal position limit pin (11) has limited the rotation of this chain body (2) again through dovetail groove, thereby makes these two chain bodies (2) become a rigid body that can not rotate each other.Thereby can bear push-pull effort;
(2) when push rod shrinks, be in the outer flexible chain of guiding slideway (7) and enter in the guiding slideway (7).Univesal sphere (8) overcomes return spring (9) under the pushing tow of guiding slideway (7) bottom surface elastic force drive buckle apical axis (10) moves upward; And drive trapezoidal position limit pin (11) and move upward; Make trapezoidal position limit pin (11) break away from dovetail groove; The two chain bodies (2) at buckle (4) place can rotate each other, and can adapt to the curvature form of guiding slideway (7).At this moment, the main effect of upper saw pulley (5) combines to guide the track of slideway (7) sidewall with less surface friction drag chain body (2) to be positioned constraint exactly, makes it under the prerequisite that keeps certain curved shape, can transmit push-pull effort.
Can know that from above embodiment the present invention can be applicable to the link that all kinds of use push rods are realized linear drives, is specially adapted to the limited situation of installing space.
Claims (6)
1. chain type flexible push rod, its characteristic comprises: push rod body (1) provides direct thrust, and its external part is fixed in an end of the flexible chain of being made up of chain body (2).The other end of flexible chain is connected in and is pushed on the object (6).Flexible chain changes the force direction that of push rod body (1) through guiding slideway (7);
2. above-mentioned chain body (2) through chain pin (3) be linked together, when buckle (4) was not pressed into the trapezoidal draw-in groove on the chain body, joining chain body (2) can rotate each other;
3. the both sides of above-mentioned chain body (2) are provided with upper saw pulley (5), and upper saw pulley (5) is limited and can only moves along the chute direction in guiding slideway (7), makes chain body (2) when moving along a curved path, have the good frictional behaviour and the stability of attitude;
4. above-mentioned buckle (4) is made up of buckle apical axis (10), trapezoidal position limit pin (11), univesal sphere (8), return spring (9).When chain body (2) is outside guiding slideway (7); Return spring (9) promotes buckle apical axis (10); Go up in the corresponding trapezoidal draw-in groove thereby make trapezoidal position limit pin (11) be embedded into chain body (2), thus the rotation between restriction chain body, and the two chain bodies that promptly are pressed into trapezoidal position limit pin (11) become rigid body.When chain body (2) is in guiding slideway (7); The bottom pushing tow univesal sphere (8) of guiding slideway (7); Be ejection buckle apical axis (10); Make trapezoidal position limit pin (11) break away from the trapezoidal draw-in groove on the chain body (2), thereby two chain bodies (20) can rotate each other, thereby can in having the guiding slideway (7) of certain curvature, move;
5. the buckle apical axis (10) of above-mentioned buckle is made up of polygonal cross-section, considers that processing technology generally adopts square.What correspondingly open on the chain pin (3) also is the square hole in gap with it.Its effect is that the buckle apical axis can not rotated with respect to chain pin (3);
Two chain bodies (2) through chain pin (3) be linked together.The stub end of chain pin (3) and lower chain body are Spielpassung, i.e. lower chain body chain pin (3) rotation relatively.The little head end of chain pin and upper chain body are that interference fit or pin are fixing, guarantee that top chain body (2) and chain pin (3) become a rigid unitary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100062076A CN102588423A (en) | 2011-01-13 | 2011-01-13 | Chained flexible push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100062076A CN102588423A (en) | 2011-01-13 | 2011-01-13 | Chained flexible push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588423A true CN102588423A (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100062076A Pending CN102588423A (en) | 2011-01-13 | 2011-01-13 | Chained flexible push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588423A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879137A (en) * | 2012-10-10 | 2013-01-16 | 北京理工大学 | Flexible fixing device for residual stress detection |
| CN106763599A (en) * | 2015-11-19 | 2017-05-31 | 上海航天设备制造总厂 | A kind of force vector direction transformation device of Ball Transmission |
| CN109352619A (en) * | 2018-10-25 | 2019-02-19 | 北京石油化工学院 | Chain regulating device and application method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB339108A (en) * | 1929-11-29 | 1930-12-04 | Renold Hans Ltd | Improvements relating to motion-transmitting devices |
| GB583883A (en) * | 1945-07-05 | 1947-01-01 | Aircraft Hydraulic Appliances | Improvements in bendable means for transmitting reciprocating motion |
| CN1095144A (en) * | 1993-03-31 | 1994-11-16 | 泰克尼迪·西杜公司 | The chain of a kind of flexible transmission or transportation |
| US20040093849A1 (en) * | 2002-11-05 | 2004-05-20 | Thomas Timothy N. | Anti-back flex chain |
| CN101055017A (en) * | 2007-05-23 | 2007-10-17 | 哈尔滨工程大学 | Push-pull chain for implementing rigidity-flexibility conversion |
-
2011
- 2011-01-13 CN CN2011100062076A patent/CN102588423A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB339108A (en) * | 1929-11-29 | 1930-12-04 | Renold Hans Ltd | Improvements relating to motion-transmitting devices |
| GB583883A (en) * | 1945-07-05 | 1947-01-01 | Aircraft Hydraulic Appliances | Improvements in bendable means for transmitting reciprocating motion |
| CN1095144A (en) * | 1993-03-31 | 1994-11-16 | 泰克尼迪·西杜公司 | The chain of a kind of flexible transmission or transportation |
| US20040093849A1 (en) * | 2002-11-05 | 2004-05-20 | Thomas Timothy N. | Anti-back flex chain |
| CN101055017A (en) * | 2007-05-23 | 2007-10-17 | 哈尔滨工程大学 | Push-pull chain for implementing rigidity-flexibility conversion |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879137A (en) * | 2012-10-10 | 2013-01-16 | 北京理工大学 | Flexible fixing device for residual stress detection |
| CN106763599A (en) * | 2015-11-19 | 2017-05-31 | 上海航天设备制造总厂 | A kind of force vector direction transformation device of Ball Transmission |
| CN109352619A (en) * | 2018-10-25 | 2019-02-19 | 北京石油化工学院 | Chain regulating device and application method |
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| PB01 | Publication | ||
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Application publication date: 20120718 |