CN202301269U - Self locking oil cylinder - Google Patents
Self locking oil cylinder Download PDFInfo
- Publication number
- CN202301269U CN202301269U CN2011203996726U CN201120399672U CN202301269U CN 202301269 U CN202301269 U CN 202301269U CN 2011203996726 U CN2011203996726 U CN 2011203996726U CN 201120399672 U CN201120399672 U CN 201120399672U CN 202301269 U CN202301269 U CN 202301269U
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- cylinder body
- piston
- lock dog
- plane
- piston rod
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- Expired - Fee Related
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Abstract
The utility model relates to a self locking oil cylinder, which comprises a cylinder body, wherein the back end of the cylinder body is provided with a back end cover, the front end of the cylinder body is provided with a front guide sleeve, a main piston is arranged in the cylinder body, a piston rod is arranged on the main piston, a convex ring is arranged in the middle of the piston rod, and a self locking mechanism is arranged in an annular space formed by the piston, the cylinder body, the piston rod and the convex ring. Because the self locking mechanism is arranged in the oil cylinder, compared with the prior art, the self locking oil cylinder has the advantages that the locking force is obviously increased, and the requirement of a mold and the like on large-scale equipment with higher locking requirements can be met without using other locking mechanisms.
Description
Technical field
The utility model relates to a kind of oil cylinder, relates in particular to a kind of self-locking oil cylinder.
Background technique
At present, oil cylinders such as cylinder, oil cylinder use more and more widely at mechanical field, simultaneously, require also increasingly high to its various aspects of performance.Especially in mould applications, mould is very high to the requirement of strength of mould clamping force, and existing gas, oil cylinder can't meet the demands at all.Present mould adopts the clamping mechanism of cranking arm of record in the Chinese patent numbers 201020110499.9 to carry out locked mode mostly.
The model utility content
The utility model provides a kind of self-locking oil cylinder, need not just can satisfy the requirement of some main equipments to the high tenacity coupling mechanism force by other locking mechanism.
For reaching the technological scheme that above-mentioned model utility purpose the utility model adopted be:
Self-locking oil cylinder; Comprise cylinder body, said rear end of the cylinder block is equipped with rear end cover, and said cylinder body front end is equipped with preceding guide pin bushing; Be provided with main piston in the said cylinder body; Piston rod is installed on the main piston, is it is characterized in that being shaped on bulge loop in the middle of the said piston rod, in the annular space that said piston, said cylinder body, said piston rod and said bulge loop are formed, be provided with self-locking mechanism;
Said self-locking mechanism comprises the sub-piston between said cylinder body and said piston rod; Said sub-piston and said cylinder body and said piston rod all seal, and the cavity in the cylinder body is separated into preceding fluid chamber and fluid chamber, back, and said sub-piston is near the end face Bevel of said bulge loop; Said inclined-plane is provided with lock dog; One end of said lock dog is shaped on the inclined-plane, is shaped on the inclined-plane that matches with this lock dog inclined-plane on the bulge loop wall, and the lock dog the other end is processed " ∧ " font; One of them inclined-plane of said lock dog " ∧ " font end matches with said sub-piston inclined-plane, is shaped on the lock dog groove that matches with said lock dog on the said cylinder body.
In the technique scheme, the lock dog groove internal fixation of said cylinder body is inserted, and is shaped on the inclined-plane that matches with another inclined-plane, said lock dog " ∧ " font end on said the inserting.
In the technique scheme, also be fixed with nut on the said cylinder body.
Owing in oil cylinder, be provided with self-locking mechanism, compared with prior art, the coupling mechanism force of the utility model obviously increases, and need not just can satisfy by other locking mechanism the requirement of the main equipment that mould etc. has relatively high expectations to coupling mechanism force.
Further specify below in conjunction with the mode of execution of accompanying drawing the utility model.
Description of drawings
Fig. 1 is the structural representation of a preferable embodiment released state of the utility model;
Fig. 2 is the corresponding structural representation of Fig. 1 lock state.
Embodiment
Like Fig. 1, shown in Figure 2, a kind of self-locking oil cylinder comprises cylinder body 9, makes for convenient, and two-part before and after cylinder body 9 is divided into adopt the split manufacturing, and assembling is fixing again.Cylinder body 9 rear ends are equipped with rear end cover 11, and cylinder body 9 front ends are equipped with preceding guide pin bushing 2, are provided with main piston 10 in the cylinder body 9, and piston rod 1 is installed on the main piston 10, and the center hole of guide pin bushing 2 exposed to cylinder body 9 before an end of piston rod 1 ran through.
The centre of piston rod 1 is shaped on bulge loop 16, in the annular space that piston 10, cylinder body 9, piston rod 1 and bulge loop 16 are formed, is provided with self-locking mechanism.
Self-locking mechanism comprises the sub-piston 7 between cylinder body 9 and piston rod 1; Sub-piston 7 all passes through oil sealing sealing with cylinder body 9 and piston rod 1; And the cavity in the cylinder body 9 is separated into preceding fluid chamber 15, and (fluid chamber 15 shows 4 chambeies, actual being connected before among Fig. 2 with fluid chamber, back 14; 3 chambeies that back fluid chamber 14 shows also are communicated with).
The above-mentioned 6 employing quality of inserting are hard, and wear-resisting material is processed.Its advantage one is wear-resisting, long service life.The 2nd, replacement is convenient, and can significantly reduce maintenance cost than the whole cylinder body of replacement.
In the technique scheme, cylinder body 9 outer walls also are fixed with nut, and the effect of nut is make things convenient for cylinder body 9 and miscellaneous equipment fixing.
The working principle of pump structure is following in this secondary:
When oil cylinder is in state shown in Figure 1; The 14 beginning oil-feeds of back fluid chamber; Fluid chamber 15 is fuel-displaced simultaneously; Main piston 10, piston rod 1, sub-piston 7 and lock dog 12 (lock dog that refers to top among Fig. 1, the movement locus of the movement locus of below lock dog and top lock dog is about piston rod 1 axis symmetry) slide to the right.Move to when inserting pairing position, 6 inclined-planes Deng " ∧ " font end of lock dog 12; Sub-piston 7 moves right with the speed greater than main piston 10 and piston rod 1 travelling speed; Lock dog 12 is under the effect on sub-piston 7 inclined-planes 71; Also move to lock dog groove 91 directions of cylinder body 9 when moving right, all moving until sub-piston 7, lock dog 12, main piston 10 and piston rod 1 puts in place, as shown in Figure 1.
This moment is owing to the oil liquid pressure of the oil liquid pressure in the fluid chamber, back 14 much larger than preceding fluid chamber 15; Therefore sub-piston 7 is slack; And piston rod 1 receives the trend of the oriented left movement of external force effect, because an end of lock dog 12 contacts through the inclined-plane with bulge loop 16 walls, causes the trend of lock dog 12 oriented upper left corner motions; But under the effect on insert 6 inclined-planes and sub-piston inclined-plane 71; Though cause the trend of lock dog 12 oriented upper left corners motion but can't move, therefore can only transfixion, so just play the locking effect.
When piston rod 1 shrinks, the 15 beginning oil-feeds of preceding fluid chamber, fluid chamber 14, back is fuel-displaced simultaneously, at first makes sub-piston 7 to left movement, and lock dog 12 is along 6 inclined-planes and the piston rod bulge loop 16 wall inclined-planes moved beneath left of inserting.When lock dog 12 moves to when breaking away from piston rod bulge loop 16 wall inclined-planes, piston rod 1 also begins to left movement with main piston 10, and sub-piston 7 continues to left movement with lock dog 12, and is as shown in Figure 1 until moving to.
More than describe the preferred embodiment of the utility model in detail.The ordinary skill that should be appreciated that related domain need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art, all should fall in the protection domain of the utility model on the basis of existing technology through the available technological scheme of logical analysis, reasoning, or a limited experiment according to the design of the utility model.
Claims (3)
1. self-locking oil cylinder; Comprise cylinder body (9), said cylinder body (9) rear end is equipped with rear end cover (11), and said cylinder body (9) front end is equipped with preceding guide pin bushing (2); Be provided with main piston (10) in the said cylinder body (9); Main piston (10) is gone up piston rod (1) is installed, and it is characterized in that being shaped on bulge loop (16) in the middle of the said piston rod (1), in the annular space that said piston (10), said cylinder body (9), said piston rod (1) and said bulge loop (16) are formed, is provided with self-locking mechanism;
Said self-locking mechanism comprises the sub-piston (7) that is positioned between said cylinder body (9) and the said piston rod (1); Said sub-piston (7) all seals with said cylinder body (9) and said piston rod (1); And the cavity that cylinder body (9) is interior is separated into preceding fluid chamber (15) and fluid chamber (14), back; Said sub-piston (7) is near the end face Bevel (71) of said bulge loop (16); Said inclined-plane (71) is provided with lock dog (12); One end of said lock dog (12) is shaped on the inclined-plane, is shaped on the inclined-plane that matches with this lock dog (12) inclined-plane on bulge loop (16) wall, and lock dog (12) the other end is processed " ∧ " font; One of them inclined-plane of said lock dog (12) " ∧ " font end matches with said sub-piston inclined-plane (71), is shaped on the lock dog groove (91) that matches with said lock dog (12) on the said cylinder body (9).
2. self-locking oil cylinder according to claim 1 is characterized in that the lock dog groove internal fixation of said cylinder body (9) is inserted (6), is shaped on the inclined-plane that matches with another inclined-plane, said lock dog (12) " ∧ " font end on said the inserting (6).
3. self-locking oil cylinder according to claim 1 is characterized in that also being fixed with on the said cylinder body (9) nut (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203996726U CN202301269U (en) | 2011-10-19 | 2011-10-19 | Self locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203996726U CN202301269U (en) | 2011-10-19 | 2011-10-19 | Self locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301269U true CN202301269U (en) | 2012-07-04 |
Family
ID=46370178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203996726U Expired - Fee Related CN202301269U (en) | 2011-10-19 | 2011-10-19 | Self locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206425A (en) * | 2013-04-28 | 2013-07-17 | 扬州核威碟形弹簧制造有限公司 | Multilevel adjustable hydraulic cylinder |
-
2011
- 2011-10-19 CN CN2011203996726U patent/CN202301269U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206425A (en) * | 2013-04-28 | 2013-07-17 | 扬州核威碟形弹簧制造有限公司 | Multilevel adjustable hydraulic cylinder |
| CN103206425B (en) * | 2013-04-28 | 2015-06-24 | 扬州核威碟形弹簧制造有限公司 | Multilevel adjustable 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 |
Granted publication date: 20120704 Termination date: 20171019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |