CN202718964U - Engineering oil cylinder piston anti-loosening mechanism - Google Patents
Engineering oil cylinder piston anti-loosening mechanism Download PDFInfo
- Publication number
- CN202718964U CN202718964U CN 201220403509 CN201220403509U CN202718964U CN 202718964 U CN202718964 U CN 202718964U CN 201220403509 CN201220403509 CN 201220403509 CN 201220403509 U CN201220403509 U CN 201220403509U CN 202718964 U CN202718964 U CN 202718964U
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- Prior art keywords
- piston
- oil cylinder
- lock
- locking nut
- piston rod
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- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to the technical field of hydraulic oil cylinder matching devices, in particular to an engineering oil cylinder piston anti-loosening mechanism. The technical scheme of the engineering oil cylinder piston anti-loosening mechanism includes that a bolt annual groove is installed at a threaded position of a joint of the front end portion of a piston rod and a lock nut, and the bolt annular groove is of a V shape and is matched with the tapered end face of a lock bolt. An elastic collar groove is installed at the inlet of a lock bolt hole, and the outer end face of the lock bolt is in locking fit with an elastic collar inside the elastic collar groove. Eddy grooves with the opposite eddy directions are installed on the front end faces of the lock nut and a piston. According to the engineering oil cylinder piston anti-loosening mechanism, a double-locked method is adopted around the lock nut, and the piston and the lock nut are reliably fastened on the piston rod, wherein the piston and the lock nut are screwed tightly. In addition, according to the specially-designed structures of the end faces of the piston and a piston nut, when the piston moves, hydraulic oil is enabled to produce eddy current on the end faces of the piston and the piston nut, the direction of the eddy current is the same as the screwing direction of threads, so that the fact that the lock nut keeps continuous screwing force is guaranteed, and the technical problem that the piston falls off easily in the prior art is effectively solved.
Description
Technical field
The utility model relates to hydraulic jack match equipment technical field, is specifically related to a kind of engineering oil cylinder piston anti-loosing mechanism.
Background technique
The hydraulic jack agent structure mainly is comprised of oil cylinder, piston rod and piston, normally be locked on the piston rod by the locking nut of its end between piston and the piston rod, rely on hydraulic oil to act on the front and back working surface of piston piston rod reciprocating in oil cylinder.In the process of its continuous motion, easily cause the connecting thread between locking nut and the piston rod loosening, finally cause piston and piston rod to become flexible even come off.In order to address the above problem, present technological means is surely to lock by locking hole and the spring bolt that radially arranges between locking nut and piston rod.Although this technological means is to a certain degree solving locking nut and the piston rod problem that gets loose, but because locking nut is to be threaded with piston rod, so its locking hole that sets in advance is difficult to reach locking nut and piston rod closely cooperates fully, affects anti-loose effect.
The model utility content
The purpose of this utility model is exactly the defective that exists for prior art, and a kind of engineering oil cylinder piston anti-loosing mechanism is provided.
Its technological scheme is: comprise piston, locking nut, lock screw and piston rod, piston uses thread set at the front end of piston rod, seal with Sealing between piston and the piston rod, piston outside is locking nut, and the lock screw hole that radially is provided with of locking nut is threaded with lock screw and cooperates.Wherein: the screw thread place that is connected with locking nut at the piston rod front end is provided with the screw circular groove, and the screw circular groove is V-shaped, cooperates with the cone end face of lock screw.
Lock mode for lock screw comprises in addition: be provided with circlip slot in ingress, lock screw hole, the circlip in lock screw exterior edge face and the circlip slot forms lock fit; Perhaps lock screw upper-end surface and ingress, lock screw hole make its tapped hole end face form interference fit to center plastic deformation and lock screw upper end with rivet riveting by machine tapped hole border 4 points.
Such scheme further comprises: the vortex groove of eddy current opposite direction is set at the front-end face of locking nut and piston, and wherein the locking nut vortex groove flows to opposite with the screw thread tightening direction.
The utility model has adopted the double locking mode of lock screw and screw circular groove, lock screw and circlip around locking nut, be fixed on reliably piston and the locking nut of tightening on the piston rod; In addition, the piston of particular design and piston unt end-face structure, when piston movement, hydraulic oil produces eddy current at piston and piston unt end face, the eddy current direction is identical with the screw thread tightening direction, thereby guarantee that locking nut has lasting screwing force, effectively solved prior art and had the caducous technical barrier of piston.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model structural drawing.
Embodiment
With reference to Fig. 1, a kind of engineering oil cylinder piston anti-loosing mechanism is centered around piston 3, locking nut 1, lock screw 2 and piston rod 4.Piston 3 usefulness thread sets are at the front end of piston rod 4, and with the Sealing sealing, piston 3 outsides are locking nuts 1 between piston 3 and the piston rod 4.It improves main points: screw circular groove (position corresponding to lock screw 2 among the figure) is arranged at front end and the screw thread place of locking nut 1 connection of piston rod 4, locking nut 1 the lock screw hole radially arranged, the cone end face of lock screw 2 docks with V font screw circular groove, and with the bottom of screw circular groove arranged cooperating of plastic deformation, realize the direct locking of locking nut.
Lock mode for lock screw comprises in addition: be provided with circlip slot in ingress, lock screw hole, the circlip in lock screw 2 exterior edge faces and the circlip slot forms lock fit; Perhaps lock screw upper-end surface and ingress, lock screw hole make its tapped hole end face form interference fit to center plastic deformation and lock screw upper end with rivet riveting by machine tapped hole border 4 points.Indirectly realize successively the locking of locking nut by the mode of locking lock screw.
Above-described embodiment further comprises: the vortex groove that the eddy current opposite direction is set at the front-end face of locking nut and piston, wherein the vortex groove of locking nut flows to opposite with the screw thread tightening direction, thereby guarantee to remain screwing force between piston and the locking nut, again prevent getting loose of locking nut.
Claims (3)
1. engineering oil cylinder piston anti-loosing mechanism, comprise piston, locking nut, lock screw and piston rod, piston uses thread set at the front end of piston rod, seal with Sealing between piston and the piston rod, piston outside is locking nut, and the lock screw hole that radially is provided with of locking nut is threaded with lock screw and cooperates, and it is characterized in that: the screw thread place that is connected with locking nut at the piston rod front end is provided with the screw circular groove, the screw circular groove is V-shaped, cooperates with the cone end face of lock screw.
2. engineering oil cylinder piston anti-loosing mechanism according to claim 1 is characterized in that: be provided with circlip slot in ingress, lock screw hole, the circlip formation lock fit in lock screw exterior edge face and the circlip slot.
3. engineering oil cylinder piston anti-loosing mechanism according to claim 1 is characterized in that: the vortex groove of eddy current opposite direction is set at the front-end face of locking nut and piston, and wherein the locking nut vortex groove flows to opposite with the screw thread tightening direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403509 CN202718964U (en) | 2012-08-15 | 2012-08-15 | Engineering oil cylinder piston anti-loosening mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403509 CN202718964U (en) | 2012-08-15 | 2012-08-15 | Engineering oil cylinder piston anti-loosening mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718964U true CN202718964U (en) | 2013-02-06 |
Family
ID=47620788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220403509 Expired - Fee Related CN202718964U (en) | 2012-08-15 | 2012-08-15 | Engineering oil cylinder piston anti-loosening mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201958A (en) * | 2015-09-21 | 2015-12-30 | 济南大学 | High-temperature-resisting piston connecting device for hydraulic cylinder |
-
2012
- 2012-08-15 CN CN 201220403509 patent/CN202718964U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201958A (en) * | 2015-09-21 | 2015-12-30 | 济南大学 | High-temperature-resisting piston connecting device for hydraulic cylinder |
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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: 20130206 Termination date: 20200815 |