CN102852902B - The guide sleeve mounting structure of drive cylinder, drive cylinder and card key - Google Patents
The guide sleeve mounting structure of drive cylinder, drive cylinder and card key Download PDFInfo
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- CN102852902B CN102852902B CN201210351831.4A CN201210351831A CN102852902B CN 102852902 B CN102852902 B CN 102852902B CN 201210351831 A CN201210351831 A CN 201210351831A CN 102852902 B CN102852902 B CN 102852902B
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- guide sleeve
- card key
- mounting structure
- cylinder barrel
- keyway
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Abstract
The invention discloses a kind of guide sleeve mounting structure of drive cylinder, comprise cylinder barrel (1) and seal the guide sleeve (2) being arranged on this cylinder barrel end, card key (3) is provided with between cylinder barrel and guide sleeve, cylinder barrel is arranged and the keyway (11) holding card key, wherein keyway is curve bath, and card key is contained in the arc convex (31) in keyway with being radially formed with form fit.The invention also discloses and a kind ofly use the drive cylinder of guide sleeve mounting structure provided by the invention and a kind of card key, this card key is formed with the multiple arc convex arranged vertically, the sectional area of the plurality of arc convex radially diminishes toward the outer side gradually.Due to the arc convex that the card key in guide sleeve mounting structure provided by the invention is radially formed, therefore, it is possible to make the reasonable stress of the keyway of form fit with it, not easily produce stress to concentrate, thus the not fragile life-span is higher, and improves the life-span of drive cylinder.
Description
Technical field
The present invention relates to the guide sleeve installing area of drive cylinder, particularly, relate to a kind of guide sleeve mounting structure of drive cylinder, use the drive cylinder of this guide sleeve mounting structure and be used in the card key in this guide sleeve mounting structure.
Background technique
Drive cylinder (oil hydraulic cylinder, pneumatic linear actuator) is widely used in, in various field, driving various machine operation by the fore and aft motion of piston rod.Wherein in order to lead to piston rod, usually in the cylinder barrel end of drive cylinder, guide sleeve is installed, and by the center of piston rod through guide sleeve, to lead to piston rod.Wherein, this guide sleeve need to bear piston rod and internal work medium (as hydraulic oil) the thrust load brought and radial load.Radial load mainly from piston rod can be delivered on cylinder barrel by the surface of contact of guide sleeve and cylinder barrel, and the thrust load mainly from working medium then needs mounting structure to be delivered on cylinder barrel.In prior art, be typically employed in the mode of installing card key between guide sleeve and cylinder barrel and transmit thrust load.But because the cross section of existing card key is rectangle, make that cylinder barrel, for the keyway assembling card key, stress easily occurs and concentrate, force-bearing situation is poor, thus causes the easy fatigue ruption in keyway place on cylinder barrel.
Summary of the invention
An object of the present invention is to provide a kind of guide sleeve mounting structure of drive cylinder, the keyway reasonable stress in this guide sleeve mounting structure on cylinder barrel, the life-span is high.
Another object of the present invention is to provide a kind of drive cylinder, and this drive cylinder uses the mounting structure of guide sleeve provided by the invention.
Another object of the present invention is to provide a kind of card key, and this card key can make keyway reasonable stress, and not easily produce stress and concentrate, the life-span is high.
To achieve these goals, according to an aspect of the present invention, a kind of guide sleeve mounting structure of drive cylinder is provided, comprise cylinder barrel and seal the guide sleeve being arranged on this cylinder barrel end, card key is provided with between described cylinder barrel and described guide sleeve, described cylinder barrel is provided with the keyway holding described card key, described keyway is curve bath, and described card key is contained in the arc convex in described keyway with being radially formed with form fit.
Preferably, described arc convex is multiple and is formed in vertically in described card key, and the plurality of arc convex is contained in multiple described keyway respectively.
Preferably, the sectional area of described arc convex radially diminishes toward the outer side gradually.
Preferably, described card key is multiple and for arcuate structure, and the plurality of card key along described cylinder barrel and described guide sleeve circumferentially.
Preferably, described card key is four and structure is identical, and these four card keys form circle configurations.
Preferably, the outer end of described guide sleeve is provided with gland, and described card key is arranged between described guide sleeve and described gland.
Preferably, described gland to be embedded between described guide sleeve and described cylinder barrel and is removably mounted on described guide sleeve by fastening piece.
Preferably, it is protruding that described cylinder barrel end is circumferentially formed as L shape, described gland correspondingly circumferentially forms n shape groove, described L shape convex shape is inserted in described n shape groove ordinatedly, and described gland is removably mounted on described guide sleeve by fastening piece, the piston rod of described drive cylinder passes the center of described gland.
Preferably, the 3rd Sealing is provided with between described gland and described cylinder barrel.
Preferably, guide ring is provided with between described gland and described piston rod.
According to a further aspect in the invention, provide a kind of drive cylinder, described drive cylinder comprises guide sleeve mounting structure provided by the invention.
In accordance with a further aspect of the present invention, provide a kind of card key, described card key is formed with the multiple arc convex arranged vertically, the sectional area of the plurality of arc convex radially diminishes toward the outer side gradually.
Pass through technique scheme, due to the arc convex that the card key in guide sleeve mounting structure provided by the invention is radially formed, therefore, it is possible to make the reasonable stress of the keyway of form fit with it, not easily produce stress and concentrate, thus the not fragile life-span is higher, and improve the life-span of drive cylinder.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the partial schematic sectional view of the drive cylinder that first embodiment of the invention provides;
Fig. 2 is the structure for amplifying schematic diagram in A portion in Fig. 1;
Fig. 3 is the structural representation of the card key used in guide sleeve mounting structure provided by the invention;
Fig. 4 is the partial schematic sectional view of the drive cylinder that second embodiment of the invention provides.
Description of reference numerals
1 cylinder barrel 2 guide sleeve
3 card key 4 glands
5 fastening piece 6 piston rods
8 guide ring 10 dust rings
11 keyway 12L shapes are protruding
31 protruding 41n shape grooves
91 first Sealing 92 second Sealings
93 linings 94 the 3rd Sealing
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use is as undefined in " inside and outside " situation usually when drive cylinder provided by the invention normally works, and for cylinder barrel, the side at guide sleeve place is inner side, and opposite side is then outside.Similarly, for gland, then the side at guide sleeve place is inner side, and opposite side is outside.It should be noted that, these nouns of locality, only for illustration of the present invention, are not limited to the present invention.
As shown in Figures 1 to 4, the invention provides a kind of guide sleeve mounting structure of drive cylinder, comprise cylinder barrel 1 and seal the guide sleeve 2 being arranged on this cylinder barrel end, wherein, by arranging the second Sealing 92 (any static seal structure well known in the art) between cylinder barrel 1 and guide sleeve 2, and the first Sealing 91 (any movable sealing structure well known in the art) is set between piston rod 6 and guide sleeve 2, install with the sealing realizing guide sleeve 2, lining 93 can also be set between piston rod 6 and guide sleeve 2 in addition, more firm with the support of the guide sleeve 2 pairs of piston rods 6 made, and reduce the wearing and tearing of piston rod 6 pairs of guide sleeves 2.Wherein, in order to bear the thrust load mainly brought from working medium (as hydraulic oil), card key 3 is provided with between cylinder barrel 1 and guide sleeve 2, wherein cylinder barrel 1 is provided with the keyway 11 holding card key 3, in order to realize object of the present invention, in the present invention, the keyway 11 that cylinder barrel 1 is formed is curve bath, and card key 3 is contained in the arc convex 31 in keyway 11 with being then radially formed with form fit.Therefore, by the cooperation of the keyway 11 of this arc convex 31 and arc, can by the axial force transmission suffered by guide sleeve 3 on cylinder barrel 1.Further, because keyway and arc convex 31 are arcuate structure, the problem that the stress can effectively avoiding rectangular cross-section in prior art to bring is concentrated, makes the reasonable stress of the keyway 11 on cylinder barrel 1, and indefatigability is damaged, and the life-span is higher.
Wherein in order to further improve the force-bearing situation of keyway 11, in two kinds of mode of executions provided by the invention, as shown in Figures 1 to 4 all preferably, arc convex 31 in card key 3 is multiple and is formed in card key 3 vertically, and the plurality of arc convex 31 is contained in multiple keyway 11 respectively.Therefore, thrust load suffered by guide sleeve 2 can be shared in each keyway 11, compare the prior art only having a keyway, the present invention can improve the force-bearing situation of keyway 11 further, in addition, stressed less due to each keyway 11, what cylinder barrel 1 can be made not need to make is very thick, namely conveniently when bearing cylinder barrel 1 can manufacture and save material.Thus make guide sleeve mounting structure practicability provided by the invention stronger.
It should be noted that, " arc " involved in the present invention is not limited in arc structure, as long as those skilled in the art are not it is understood that overall structure forms corner angle but all should be dropped in protection scope of the present invention by the structure of arc transition.Wherein, as a kind of preferred embodiment, as described in Figure 2, the sectional area of arc convex 31 radially diminishes toward the outer side gradually, this arc convex 31 can be formed as the projection being roughly trapezium structure, and the corner angle of this trapezium structure are arc transition, thus makes the stressed more rationally reliable of the keyway 11 of form fit with it, avoid the problem producing stress and concentrate, make and the life-span of keyway 11 on cylinder barrel 1 longer.
In addition, in a preferred embodiment of the invention, as shown in Figure 3, conveniently produce and install above-mentioned card key 3, card key 3 provided by the invention is multiple and is arcuate structure, the plurality of card key 3 along cylinder barrel 1 and guide sleeve 2 circumferentially, equably the thrust load suffered by guide sleeve 2 is delivered on cylinder barrel 1.Wherein as a kind of embodiment, card key 3 is four and structure is identical, and these four card keys 3 form complete circle configurations, the thrust load that guide sleeve 2 complete cycle bears all should be delivered on cylinder barrel 1 to complete.Certainly, except 4, according to assembling needs, the conventional mode also having 3 card keys to carry out combining, the change for this type of quantity all should drop in protection scope of the present invention.
Except above-mentioned card key structure, in guide sleeve mounting structure provided by the invention, the outer end of guide sleeve 2 is also provided with gland 4, stablizes to make the installation of guide sleeve further.Wherein, above-mentioned card key 3 can be arranged between guide sleeve 2 and gland 4.The present invention will be described to the invention provides two kinds of mode of executions herein, and these two kinds of mode of executions, only for illustration of the present invention, are not limited to the present invention.
In the first mode of execution as shown in Figure 1, gland 4 to be embedded between guide sleeve 2 and cylinder barrel 1 and is removably mounted on guide sleeve 2 by fastening piece 5.Namely this gland 4 is ring structure, and this ring structure is embedded in the circular groove that guide sleeve 2 and cylinder barrel 1 formed, thus makes the mounting structure between guide sleeve 2 provided by the invention and cylinder barrel 1 more firm.Wherein fastening piece 5 can be preferably multiple screw, and the present invention does not limit this.
Alternatively, as shown in Figure 4, be different from the Embedded mounting type of gland 4 in Fig. 1, cylinder barrel 1 end is circumferentially formed as L shape projection 12, and gland 4 correspondingly circumferentially forms n shape groove 41, after mounting, L shape projection 12 can be inserted into form fit in n shape groove 41, and gland 4 is also removably mounted on guide sleeve 2 by fastening piece 5 (being preferably screw), now, the piston rod 6 of drive cylinder can through the center of gland 4.Therefore, in this structure, gland 4 can coordinate better with cylinder barrel 1, then can be more firm by the mounting structure between guide sleeve 2 and cylinder barrel 1 by fastening piece 5.Wherein in order to seal guide sleeve mounting structure of the present invention further, preferably, the 3rd Sealing 94 is provided with between gland 4 and cylinder barrel 1.3rd Sealing 94 is optional with personnel's Sealing well known in the art or sealing configurations such as the O type circles with waterproof and dust reduction capability.In addition, in order to ensure the connective stability between piston rod 6 and gland 4, preferably, guide ring 8 is also provided with between gland 4 and piston rod 6, this guide ring 8 can make gland 4 support piston rod 6 better, and reduce the wearing and tearing of piston rod 6 pairs of glands 4, wherein guide ring 8 can adopt the material same with above-mentioned lining or other high-abrasive materials to make.In addition, as shown in Figure 4, also dust ring 10 can be also set in the outside of guide ring 8, to prevent dust from entering, thus avoid the wearing and tearing of piston rod 6 pairs of glands.For above-mentioned concrete structure, those skilled in the art can also make other change that can think or replacements, but only this change and replacement all should drop in protection scope of the present invention.
To sum up, the present invention is by providing a kind of novel card key, this card key 3 is formed with the multiple arc convex 31 arranged vertically, the sectional area of the plurality of arc convex 31 radially diminishes toward the outer side gradually, the life-span of the keyway on the cylinder barrel in guide sleeve mounting structure provided by the invention can be made longer, avoid producing stress to concentrate, and the thickness of cylinder barrel appropriate section can be reduced, save material, such as, and make the drive cylinder using this guide sleeve mounting structure, oil hydraulic cylinder has higher practicability and promotional value.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. the guide sleeve mounting structure of a drive cylinder, comprise cylinder barrel (1) and seal the guide sleeve (2) being arranged on this cylinder barrel end, card key (3) is provided with between described cylinder barrel (1) and described guide sleeve (2), described cylinder barrel (1) is provided with the keyway (11) holding described card key (3), it is characterized in that, described keyway (11) is curve bath, described card key (3) is contained in the arc convex (31) in described keyway (11) with being radially formed with form fit, the outer end of described guide sleeve (2) is provided with gland (4), described card key (3) is arranged between described guide sleeve (2) and described gland (4), described arc convex (31) is for multiple and be formed in described card key (3) vertically, and the plurality of arc convex (31) is contained in multiple described keyway (11) respectively.
2. guide sleeve mounting structure according to claim 1, is characterized in that, the sectional area of described arc convex (31) radially diminishes toward the outer side gradually.
3. according to the guide sleeve mounting structure in claim 1-2 described in any one, it is characterized in that, described card key (3) is for multiple and be arcuate structure, and the plurality of card key (3) along described cylinder barrel (1) and described guide sleeve (2) circumferentially.
4. guide sleeve mounting structure according to claim 3, is characterized in that, described card key (3) is four and structure is identical, and these four card keys (3) form circle configurations.
5. guide sleeve mounting structure according to claim 1, it is characterized in that, described gland (4) is embedded between described guide sleeve (2) and described cylinder barrel (1) and is also removably mounted on described guide sleeve (2) by fastening piece (5).
6. guide sleeve mounting structure according to claim 1, it is characterized in that, described cylinder barrel (1) end is circumferentially formed as L shape projection (12), described gland (4) correspondingly circumferentially forms n shape groove (41), be inserted in described n shape groove (41) to described L shape projection (12) form fit, and described gland (4) is removably mounted on described guide sleeve (2) by fastening piece (5), the piston rod (6) of described drive cylinder is through the center of described gland (4).
7. guide sleeve mounting structure according to claim 6, is characterized in that, is provided with the 3rd Sealing (94) between described gland (4) and described cylinder barrel (1).
8. guide sleeve mounting structure according to claim 7, is characterized in that, is provided with guide ring (8) between described gland (4) and described piston rod (6).
9. a drive cylinder, is characterized in that, described drive cylinder comprises according to the guide sleeve mounting structure in claim 1-8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351831.4A CN102852902B (en) | 2012-09-20 | 2012-09-20 | The guide sleeve mounting structure of drive cylinder, drive cylinder and card key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351831.4A CN102852902B (en) | 2012-09-20 | 2012-09-20 | The guide sleeve mounting structure of drive cylinder, drive cylinder and card key |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102852902A CN102852902A (en) | 2013-01-02 |
| CN102852902B true CN102852902B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210351831.4A Active CN102852902B (en) | 2012-09-20 | 2012-09-20 | The guide sleeve mounting structure of drive cylinder, drive cylinder and card key |
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| Country | Link |
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| CN (1) | CN102852902B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500496A (en) * | 2014-12-16 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Three-section four-piece split guide sleeve structure for oil cylinder |
| CN105090160A (en) * | 2015-09-30 | 2015-11-25 | 柳州双吉机械有限公司 | Double-acting piston type hydraulic cylinder |
Citations (7)
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| CN201330770Y (en) * | 2008-12-05 | 2009-10-21 | 韶关液压件厂有限公司 | Hydraulic cylinder located and locked by clip key |
| CN201560998U (en) * | 2009-11-24 | 2010-08-25 | 中船重工中南装备有限责任公司 | Hydraulic oil cylinder with novel guide sleeve structure |
| CN101956741A (en) * | 2010-10-25 | 2011-01-26 | 潘井仁 | Conveniently-disassembled oil cylinder of hydraulic starting and shutting machine |
| CN201934418U (en) * | 2011-01-19 | 2011-08-17 | 徐州徐工液压件有限公司 | Novel cylinder head connecting component structure for hydraulic cylinder |
| CN201934419U (en) * | 2011-01-28 | 2011-08-17 | 张家口长城液压油缸有限公司 | Novel connecting structure of a hydraulic cylinder guide sleeve |
| CN102434672A (en) * | 2011-10-31 | 2012-05-02 | 湖南特力液压有限公司 | Hydraulic cylinder sealing structure |
| CN102635596A (en) * | 2012-04-26 | 2012-08-15 | 三一重工股份有限公司 | Guide sleeve, guide sleeve structure and oil cylinder |
-
2012
- 2012-09-20 CN CN201210351831.4A patent/CN102852902B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201330770Y (en) * | 2008-12-05 | 2009-10-21 | 韶关液压件厂有限公司 | Hydraulic cylinder located and locked by clip key |
| CN201560998U (en) * | 2009-11-24 | 2010-08-25 | 中船重工中南装备有限责任公司 | Hydraulic oil cylinder with novel guide sleeve structure |
| CN101956741A (en) * | 2010-10-25 | 2011-01-26 | 潘井仁 | Conveniently-disassembled oil cylinder of hydraulic starting and shutting machine |
| CN201934418U (en) * | 2011-01-19 | 2011-08-17 | 徐州徐工液压件有限公司 | Novel cylinder head connecting component structure for hydraulic cylinder |
| CN201934419U (en) * | 2011-01-28 | 2011-08-17 | 张家口长城液压油缸有限公司 | Novel connecting structure of a hydraulic cylinder guide sleeve |
| CN102434672A (en) * | 2011-10-31 | 2012-05-02 | 湖南特力液压有限公司 | Hydraulic cylinder sealing structure |
| CN102635596A (en) * | 2012-04-26 | 2012-08-15 | 三一重工股份有限公司 | Guide sleeve, guide sleeve structure and oil cylinder |
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| CN102852902A (en) | 2013-01-02 |
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