CN205101310U - Self sealss formula pneumatic cylinder piston locking device - Google Patents
Self sealss formula pneumatic cylinder piston locking device Download PDFInfo
- Publication number
- CN205101310U CN205101310U CN201520795288.6U CN201520795288U CN205101310U CN 205101310 U CN205101310 U CN 205101310U CN 201520795288 U CN201520795288 U CN 201520795288U CN 205101310 U CN205101310 U CN 205101310U
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- China
- Prior art keywords
- piston
- piston rod
- locking device
- boss
- rod
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- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a self sealss formula pneumatic cylinder piston locking device belongs to pneumatic cylinder technical field. Including piston rod and piston, piston rod one end is opened threadedly, and the piston passes through threaded connection and installs at the piston rod thread end, piston end opens has the one or more recess placed a piece in the recess, the upper end cooperation of book piece is rolled over an other end and is connected through welding and piston rod thread end surface in inserting piston end's recess. The utility model discloses do not have the clearance between well piston and the piston rod, with the cooperation of the boss on the shang rod half the circumference of the sleeve where it joins the shoulder with the heavy groove of piston internal surface, the leakproofness obtains great improvement again, using and rolling over fixed piston of piece and piston rod, the piston rod thread end does not have other processing, and manufacturing procedure is few, and production efficiency is high, and is locking more reliable.
Description
Technical field
The utility model design oil hydraulic cylinder technical field, specifically a kind of self-sealed hydraulic cylinder piston locking device.
Background technique
At present, the locking conventional jack-screw type structure of piston of colleague's oil cylinder both at home and abroad, mainly contains two kinds: one adopts cone end Cock screw to carry out locking, as shown in Figure 1; In this loosing Prevention Technology scheme, its structure comprises piston rod, piston and Cock screw three part, after piston and piston rod assemble, at its end face, and drilling and tapping vertically centered by its joint, and screw in Cock screw.When piston runs into impact, rely on Cock screw, piston rod becomes as a whole with piston, avoids piston thread to loosen, prevents piston rotation from exiting, reach locking object.Its shortcoming is to process one circular groove in piston rod thread section, because the width of circular groove can not fit like a glove with Cock screw contact segment, upwards certain interval is left at piston rod, in reciprocating motion of the pistons process, to vibrate frequently and impact can make piston just at piston rod, slight vibration upwards occur, affect the use of oil cylinder, the local diameter size reducing piston rod is also shown in by circular groove.
Another kind adopts styletable Cock screw locking, as shown in Figure 2: in this loosing Prevention Technology scheme, its structure comprises piston rod, piston, styletable Cock screw three part, after piston and piston rod assemble, brill bottom outlet is joined at scene, and screwing in styletable Cock screw, the socket cap of screw front end inserts in the bottom outlet of piston rod.When piston runs into impact, the part that styletable screw inserts piston rod can effectively stop piston to rotate and the axial motion along piston rod, reaches locking object.Its shortcoming is to need scene after installing piston and piston rod to join brill bottom outlet, can increase installation time, reduce manufacturing efficiency, and the iron filings produced in boring procedure is difficult to cleaning, be not suitable for producing in enormous quantities.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of self-sealed hydraulic cylinder piston locking device.
The utility model is by the following technical programs: a kind of self-sealed hydraulic cylinder piston locking device, comprises piston rod and piston; Described piston rod one end has screw thread, and piston is threaded connection and is arranged on piston rod thread end; Have one or more groove at described piston end surface, in described groove, be placed with folded block, folded block upper end coordinates in the groove of insertion piston end surface, and the folded block the other end is connected with piston rod thread end surfaces by welding.
It is further: described piston interior surface is step-like, and described piston rod thread end is provided with the half the circumference of the sleeve where it joins the shoulder matched with piston interior surface; Described piston rod half the circumference of the sleeve where it joins the shoulder end face is provided with a circle boss, and described piston interior surface has the deep gouge matched with piston rod boss.
The deep gouge that described piston rod boss and piston interior surface match with piston rod boss has more than a pair or a pair.
Described folded block is welded by mutually perpendicular round bar and square pole, and described round bar coordinates in the groove of insertion piston end surface, and described square pole lower end is the arc shaped surface of fitting with piston rod thread end surfaces.
The utility model has the advantage of: very close to each other between piston and piston rod, add coordinating of the deep gouge of the boss on piston rod half the circumference of the sleeve where it joins the shoulder and piston interior surface, sealing obtains larger raising; Use folded block fixed piston and piston rod, piston rod thread end does not have other to process, and manufacturing procedure is few, and manufacturing efficiency is high, locking more reliable.
Accompanying drawing explanation
Fig. 1 is cone end Cock screw anti-loose structure;
Fig. 2 is styletable Cock screw anti-loose structure;
Fig. 3 is the utility model structural representation.
In figure: 1, piston rod; 2, piston; 3, folded block; 4, boss.
Embodiment
Be below a specific embodiment of the present utility model, now by reference to the accompanying drawings the utility model be described further.
As shown in Figure 1, a kind of self-sealed hydraulic cylinder piston locking device, comprises piston rod 1 and piston 2; Piston rod 1 one end has screw thread, and piston 2 is threaded connection and is arranged on piston rod 1 threaded end; Piston 2 internal surface is step-like, and piston rod 1 threaded end is provided with the half the circumference of the sleeve where it joins the shoulder matched with piston 2 internal surface; Piston rod 1 half the circumference of the sleeve where it joins the shoulder end face is provided with a circle boss 4, and piston 2 internal surface has the deep gouge matched with piston rod 1 boss 4.A groove is had at piston 2 end face, be placed with folded block 3 in a groove, folded block 3 is welded by mutually perpendicular round bar and square pole, round bar coordinates in the groove of insertion piston 2 end face, square pole lower end is in arc shaped surface of fitting surperficial with piston rod 1 threaded end, square pole lower end is connected with piston rod 1 threaded end surface by welding, and square pole and piston 2 end face are close to.
Claims (4)
1. a self-sealed hydraulic cylinder piston locking device, comprises piston rod (1) and piston (2); Described piston rod (1) one end has screw thread, and piston (2) is threaded connection and is arranged on piston rod (1) threaded end; It is characterized in that: have one or more groove at described piston (2) end face, folded block (3) is placed with in described groove, folded block (3) upper end coordinates in the groove of insertion piston (2) end face, and folded block (3) the other end is connected by welding and piston rod (1) threaded end surface.
2. the self-sealed hydraulic cylinder piston locking device of one according to claim 1, is characterized in that: described piston (2) internal surface is step-like, described piston rod (1) threaded end is provided with the half the circumference of the sleeve where it joins the shoulder matched with piston (2) internal surface; Described piston rod (1) half the circumference of the sleeve where it joins the shoulder end face is provided with a circle boss (4), and described piston (2) internal surface has the deep gouge matched with piston rod (1) boss (4).
3. the self-sealed hydraulic cylinder piston locking device of one according to claim 2, is characterized in that: the deep gouge that described piston rod (1) boss (4) and piston (2) internal surface match with piston rod (1) boss (4) has more than a pair or a pair.
4. the self-sealed hydraulic cylinder piston locking device of one according to claim 1, it is characterized in that: described folded block (3) is welded by mutually perpendicular round bar and square pole, described round bar coordinates in the groove of insertion piston (2) end face, and described square pole lower end is in arc shaped surface of fitting surperficial with piston rod (1) threaded end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795288.6U CN205101310U (en) | 2015-10-15 | 2015-10-15 | Self sealss formula pneumatic cylinder piston locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795288.6U CN205101310U (en) | 2015-10-15 | 2015-10-15 | Self sealss formula pneumatic cylinder piston locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101310U true CN205101310U (en) | 2016-03-23 |
Family
ID=55517092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520795288.6U Expired - Fee Related CN205101310U (en) | 2015-10-15 | 2015-10-15 | Self sealss formula pneumatic cylinder piston locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205101310U (en) |
-
2015
- 2015-10-15 CN CN201520795288.6U patent/CN205101310U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20161015 |