CN209654344U - A kind of self-locking oil cylinder - Google Patents
A kind of self-locking oil cylinder Download PDFInfo
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- CN209654344U CN209654344U CN201920112094.XU CN201920112094U CN209654344U CN 209654344 U CN209654344 U CN 209654344U CN 201920112094 U CN201920112094 U CN 201920112094U CN 209654344 U CN209654344 U CN 209654344U
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Abstract
The utility model relates to a kind of self-locking oil cylinders.The device includes cylinder body, cylinder body one end is equipped with drive end bearing bracket, the other end is equipped with rear end cap, piston rod is plugged on drive end bearing bracket, piston rod is equipped with piston component, bulge loop is equipped with positioned at the intracorporal rear end cap end face of cylinder, interlocking has several steel balls on bulge loop side wall, the diameter D of steel ball is greater than the thickness h of bulge loop, there are the locked gaps of annular between bulge loop outer wall and inboard wall of cylinder block, piston component includes the first compressed spring and the piston being socketed on the piston rod, self-locking nut is screwed on piston rod, self-locking nut contradicts on piston, annular groove is offered on self-locking nut outer wall, the equal arc transition of annular groove both sides eaves, piston is equipped with the sliding sleeve being plugged in the locked gap of annular, oil inlet and outlet is offered on cylinder side wall.Since sliding bulge loop is matched with steel ball, when steel ball is rabbeted in a ring groove, piston rod is locked in cylinder body, after steel ball skids off annular groove, piston rod is separated with bulge loop, realizes the unlock of piston.
Description
Technical field
The utility model relates to oil cylinder technical field more particularly to a kind of self-locking oil cylinders.
Background technique
A kind of patent of self-locking oil cylinder is disclosed in existing Chinese patent database, number of patent application is
200810123140.2 patent application day is 2008.06.06, Patent publication No CN101315090, patent disclosure day is
2008.12.03, structure includes cylinder sleeve, piston, piston rod, offers on the cylinder sleeve and is located at the piston
The first of front side and rear side enters oilhole and second and enters oilhole, and locating piece, the positioning are further fixedly arranged in the cylinder sleeve
Block enters at oilhole close to one of them above-mentioned, and the radial direction for retainer along piston rod is offered on the locating piece and is moved
Dynamic hole；The piston includes: piston only and briquetting, and the piston only is connected on the piston rod, described
Briquetting by the second elastic component elastic connection on the piston only, opened between the briquetting and the piston rod
Equipped with the notch for the locating piece insertion；Locking groove is along the circumferential direction offered on the piston rod, described stops
The cell wall of dynamic slot and the outer diameter of the piston rod are smooth excessively, and when the self-locking oil cylinder locking, the retainer is fallen
Enter in the locking groove, the briquetting blocks the retainer along the radial direction of the piston rod；When described self-locking
When oil cylinder unlocks, the locating piece is detached from the notch, and having in the cylinder sleeve can make the retainer described in
Piston rod the free space moved radially.Disadvantage is that: the device is sealed by briquetting and inboard wall of cylinder block sliding
Close, the cooperation of retainer and pressure spring is to lock oil cylinder, should meet the leakproofness of briquetting and cylinder body, make piston and cylinder body sliding again
Dynamic sealing, therefore technique is cumbersome, processing technology is more demanding, and installation cooperation progress is higher, and production cost is higher.
Utility model content
The purpose of this utility model is in view of the deficienciess of the prior art, providing a kind of processing technology requires low, production
Self-locking oil cylinder at low cost.
To achieve the goals above, a kind of technical solution that self-locking oil cylinder is taken of the utility model:
A kind of self-locking oil cylinder, the cylinder body including tubulose, cylinder body is open at one end to be provided with drive end bearing bracket, and another end opening is provided with
Rear end cap, sliding plug has piston rod on the drive end bearing bracket, and piston rod one end is located at outside cylinder body, and the other end is located in cylinder body and even
It is connected to piston component, the bulge loop coaxial with piston rod is equipped with positioned at the intracorporal rear end cap end face of cylinder, is slided on the bulge loop side wall
Dynamic interlocking has several steel balls, and the diameter D of steel ball is greater than the thickness h of bulge loop, and there are rings between the bulge loop outer wall and inboard wall of cylinder block
Shape locks gap, and piston component includes the first compressed spring being socketed on the piston rod and the work being slidably socketed on the piston rod
Plug, first compressed spring one end contradict on the shaft shoulder of piston rod, and the other end contradicts on one end face of piston, are located at cylinder body
Interior piston rod free end is screwed with self-locking nut, and self-locking nut one end contradicts on piston other end, outside self-locking nut
The annular groove coaxial with piston rod, the equal arc transition of annular groove both sides eaves are offered on wall, piston is equipped with and is plugged on ring lock
Sliding sleeve in dead gap, conical surface transition between sliding sleeve free end end face and sliding sleeve inner wall, sliding sleeve inner wall are contradicted in each steel ball surface,
Steel ball is limited in a ring groove, oil inlet is offered on the cylinder side wall of piston one end, positioned at the cylinder of the piston other end
Oil outlet is offered on body sidewall.
When utility model works, oil inlet oil inlet makes the space oil inlet of rear end cap side, so that extrusion piston makes first
Compressed spring is shunk, and sliding sleeve follows piston move to oil outlet side, and sliding sleeve is locked in gap from annular and skidded off, piston continue to
The movement of oil outlet side, steel ball are skidded off out of annular groove, are put in the locked gap of annular, and oil cylinder unlock is living when needing self-locking
End cap side moves plug backward, and sliding sleeve end face contradicts when on steel ball, and the first compressed spring is shunk, and steel ball is embedding in a ring groove,
First compressed spring resets, and is plugged on sliding sleeve in the locked gap of annular.
Compared with prior art, the utility model has the following beneficial effects: matching due to sliding bulge loop with steel ball, work as steel ball
In a ring groove, piston rod is locked in cylinder body for interlocking, and after steel ball skids off annular groove, piston rod is separated with bulge loop, is realized
The unlock of piston.
Open slot is offered on the piston outer wall of self-locking nut side, sliding sleeve is connected to the second compression bullet on open slot
Spring and sliding sleeve are socketed with limit stop ring on the piston outer wall of open slot free end, and the sliding sleeve inner wall is equipped with and sliding sleeve
Coaxial annular convex shoulder, second compressed spring one end contradict on the end face of open slot root, and the other end is contradicted in convex annular
On one end face of shoulder, annular convex shoulder other end is contradicted in limit stop ring.
The annular groove offered on piston outer wall on inboard wall of cylinder block with piston coaxial setting is contradicted, in annular groove
Interlocking has ring type seal, and the free end of ring type seal contradicts on inboard wall of cylinder block, and cylinder body is divided into independent two skies
Between.
Contradict the annular spacing groove offered on piston inner wall on the piston rod with piston coaxial setting, annular spacing groove
It is embedded to be connected to annular retaining ring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the partial enlargement diagram in Fig. 1 at A.
Wherein, 1 cylinder body, 101 oil inlets, 102 oil outlets, 2 drive end bearing brackets, 3 rear end caps, 301 bulge loops, 302 steel balls, 4 pistons
Bar, 401 shaft shoulders, 5 piston components, 501 first compressed springs, 502 pistons, 503 self-locking nuts, 504 annular grooves, 505 sliding sleeves,
506 open slots, 507 second compressed springs, 508 limit stop rings, 509 annular convex shoulders, the locked gap of 6 annulars.
Specific embodiment
It is a kind of self-locking oil cylinder, the cylinder body 1 including tubulose, cylinder body 1 is open at one end to be provided with drive end bearing bracket as described in Fig. 1-2
2, another end opening is provided with rear end cap 3, and sliding plug has piston rod 4 on drive end bearing bracket 2, and 4 one end of piston rod is located at outside cylinder body 1,
The other end is located in cylinder body 1 and is connected with piston component 5, and 3 end face of rear end cap in cylinder body 1 is equipped with same with piston rod 4
The bulge loop 301 of axis, the interlocking of 301 slide over side walls of bulge loop have several steel balls 302, and the diameter D of steel ball 302 is greater than the thickness of bulge loop 301
H is spent, there are the locked gap 6 of annular between 1 inner wall of 301 outer wall of bulge loop and cylinder body, piston component 5 includes being socketed on piston rod 4
The first compressed spring 501 and the piston 502 that is slidably socketed on piston rod 4,501 one end of the first compressed spring contradict in work
On the shaft shoulder 401 of stopper rod 4, the other end is contradicted on 502 1 end face of piston, and 4 free end of piston rod in cylinder body 1 is screwed with
Self-locking nut 503,503 one end of self-locking nut contradict on 502 other end of piston, offer on the outer wall of self-locking nut 503
The annular groove 504 coaxial with piston rod 4, the 504 equal arc transition of both sides eaves of annular groove, piston 502 are equipped with and are plugged on ring lock
Sliding sleeve 505 in dead gap 6, conical surface transition between 505 inner wall of 505 free end end face of sliding sleeve and sliding sleeve, 505 inner wall of sliding sleeve contradict
In each steel ball surface, steel ball is limited in annular groove 504, is offered on 502 outer wall of piston of 503 side of self-locking nut
Open slot 506, sliding sleeve is connected to the second compressed spring 507 and sliding sleeve 505 on open slot 506, positioned at 506 free end of open slot
Limit stop ring 508 is socketed on 502 outer wall of piston, 505 inner wall of sliding sleeve is equipped with the annular convex shoulder 509 coaxial with sliding sleeve 505, the
Two compressed springs, 507 one end contradicts on 506 root end face of open slot, and the other end contradicts the ring on 509 1 end face of annular convex shoulder
509 other end of shape convex shoulder contradicts in limit stop ring 508, offers oil inlet on 1 side wall of cylinder body of 502 one end of piston
101, oil outlet 102 is offered on 1 side wall of cylinder body of 502 other end of piston, contradicts the piston 502 on 1 inner wall of cylinder body
The annular groove being coaxially disposed with piston 502 is offered on outer wall, annular groove is embedded to be connected to ring type seal, ring type seal
Free end contradict on 1 inner wall of cylinder body, cylinder body 1 is divided into independent two spaces, contradicts the piston on piston rod 4
The annular spacing groove being coaxially disposed with piston 502 is offered on 502 inner walls, annular spacing groove is embedded to be connected to annular retaining ring.
When work, 101 oil inlet of oil inlet makes the space oil inlet of 3 side of rear end cap, so that extrusion piston 502 makes the first pressure
Contracting spring 501 is shunk, and sliding sleeve 505 follows piston 502 to move to 102 side of oil outlet, and sliding sleeve 505 is out of annular locked gap 6
It skids off, piston 502 continues to move to 102 side of oil outlet, and steel ball 302 is skidded off out of annular groove 504, puts in the locked gap of annular
In 6, oil cylinder unlock, when needing self-locking, 3 side of end cap moves piston 502 backward, and 505 end face of sliding sleeve contradicts on steel ball 302
When, the first compressed spring 501 and the second compressed spring 507 are shunk, and steel ball 302 is in annular groove 504, the first compressed spring
501 reset with the second compressed spring 507, are plugged on sliding sleeve 505 in the locked gap 6 of annular.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed by the utility model, this
For the technical staff in field according to disclosed technology contents, not needing creative labor can be special to some of which technology
Sign makes some replacements and deformation, these replacements and deformation are within the protection scope of the present utility model.
Claims (4)
1. a kind of self-locking oil cylinder, the cylinder body including tubulose, cylinder body is open at one end to be provided with drive end bearing bracket, after another end opening is provided with
End cap, sliding plug has piston rod on the drive end bearing bracket, and piston rod one end is located at outside cylinder body, and the other end is located in cylinder body and connects
There is piston component, it is characterised in that: be equipped with the bulge loop coaxial with piston rod, the bulge loop positioned at the intracorporal rear end cap end face of cylinder
Slide over side walls interlocking has several steel balls, and the diameter D of steel ball is greater than the thickness h of bulge loop, the bulge loop outer wall and inboard wall of cylinder block it
Between there are the locked gap of annular, piston component includes socket the first compressed spring on the piston rod and is slidably socketed in piston
Piston on bar, first compressed spring one end contradict on the shaft shoulder of piston rod, and the other end contradicts on one end face of piston,
It is screwed with self-locking nut positioned at the intracorporal piston rod free end of cylinder, self-locking nut one end contradicts on piston other end, self-locking
The annular groove coaxial with piston rod, the equal arc transition of annular groove both sides eaves are offered on the outer wall of nut, piston is equipped with grafting
Sliding sleeve in the locked gap of annular, conical surface transition between sliding sleeve free end end face and sliding sleeve inner wall, sliding sleeve inner wall are contradicted each
Steel ball is limited in a ring groove, offers oil inlet on the cylinder side wall of piston one end by steel ball surface, and it is another to be located at piston
Oil outlet is offered on the cylinder side wall of one end.
2. a kind of self-locking oil cylinder according to claim 1, it is characterised in that: on the piston outer wall of self-locking nut side
Open slot is offered, sliding sleeve is connected to the second compressed spring and sliding sleeve on open slot, the piston outer wall positioned at open slot free end
On be socketed with limit stop ring, the sliding sleeve inner wall is equipped with the annular convex shoulder coaxial with sliding sleeve, second compressed spring one end
It contradicts on the end face of open slot root, the other end contradicts on one end face of annular convex shoulder, and annular convex shoulder other end contradicts and limiting
On the retaining ring of position.
3. a kind of self-locking oil cylinder according to claim 1 or 2, it is characterised in that: contradict outside the piston on inboard wall of cylinder block
Offer the annular groove with piston coaxial setting on wall, annular groove is embedded to be connected to ring type seal, ring type seal from
It is contradicted on inboard wall of cylinder block by end, cylinder body is divided into independent two spaces.
4. a kind of self-locking oil cylinder according to claim 3, it is characterised in that: contradict and opened on piston inner wall on the piston rod
Equipped with the annular spacing groove being arranged with piston coaxial, annular spacing groove is embedded to be connected to annular retaining ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920112094.XU CN209654344U (en) | 2019-01-23 | 2019-01-23 | A kind of self-locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920112094.XU CN209654344U (en) | 2019-01-23 | 2019-01-23 | A kind of self-locking oil cylinder |
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| Publication Number | Publication Date |
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| CN209654344U true CN209654344U (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920112094.XU Active CN209654344U (en) | 2019-01-23 | 2019-01-23 | A kind of self-locking oil cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022600A (en) * | 2019-12-12 | 2020-04-17 | 捷福装备（武汉）股份有限公司 | Electric combined folding electric cylinder |
| CN112814970A (en) * | 2021-03-08 | 2021-05-18 | 天津东来高新科技有限公司 | Self-locking cylinder with retraction function |
| CN117125197A (en) * | 2023-09-05 | 2023-11-28 | 扬州市江都永坚有限公司 | Cable throwing device |
-
2019
- 2019-01-23 CN CN201920112094.XU patent/CN209654344U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022600A (en) * | 2019-12-12 | 2020-04-17 | 捷福装备（武汉）股份有限公司 | Electric combined folding electric cylinder |
| CN112814970A (en) * | 2021-03-08 | 2021-05-18 | 天津东来高新科技有限公司 | Self-locking cylinder with retraction function |
| CN117125197A (en) * | 2023-09-05 | 2023-11-28 | 扬州市江都永坚有限公司 | Cable throwing device |
| CN117125197B (en) * | 2023-09-05 | 2024-02-20 | 扬州市江都永坚有限公司 | Cable throwing device |
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