CN203847483U - Oil cylinder with braking structure - Google Patents
Oil cylinder with braking structure Download PDFInfo
- Publication number
- CN203847483U CN203847483U CN201420278770.8U CN201420278770U CN203847483U CN 203847483 U CN203847483 U CN 203847483U CN 201420278770 U CN201420278770 U CN 201420278770U CN 203847483 U CN203847483 U CN 203847483U
- Authority
- CN
- China
- Prior art keywords
- braking
- piston rod
- oil cylinder
- bonnet
- cylinder barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an oil cylinder with a braking structure. The oil cylinder comprises an oil cylinder body and a braking device. The oil cylinder body comprises a cylinder barrel, a piston rod and a piston. The two ends of the cylinder barrel are provided with a front cover and a back cover respectively. A groove is formed in the front section of the piston rod. A piston rod oblique face is arranged at the top end of the piston rod. The braking device is arranged below the back cover. The braking device comprises a braking cylinder barrel and a braking piston rod. The two ends of the braking cylinder barrel are provided with a braking front cover and a braking back cover respectively. Center holes of the braking front cover and the braking back cover are matched with the braking piston rod in a moving-sealing mode. A spring is arranged between the braking back cover and the braking piston rod. The front section of the braking piston rod is provided with a protruding part matched with the groove. The protruding part is provided with an oblique face parallel to the oblique face of the piston rod. A safe locking device which is compact in structure, convenient to operate, stable and reliable in working and suitable for a hydraulic oil cylinder can be provided.
Description
Technical field
The utility model relates to a kind of oil cylinder, particularly relates to a kind of oil cylinder of band brake structure.
Background technique
Oil cylinder is oil hydraulic cylinder, and oil hydraulic cylinder is the straight line moving type executive component that the pressure reduction on ouput force and piston effective area and both sides thereof is directly proportional.Its function is to convert hydraulic energy to mechanical energy.The input quantity of oil hydraulic cylinder is flow and the pressure of fluid, output be point-to-point speed and power.The piston energy accomplish linear to-and-fro motion of oil hydraulic cylinder, the straight-line displacement of output is limited.Oil hydraulic cylinder is hydraulic energy to be converted to the energy conversion device of the mechanical energy of linear reciprocating motion.Oil cylinder has simple in structure, High power output, stable and reliable for performance, and the features such as working service convenience, are widely used in mechanically various.In the practical application of hydraulic jack, in some Special use situation or mechanism, hydraulic cylinder piston rod reaches after certain position, is absolutely not to allow to move, if mobile, can cause mechanism's cisco unity malfunction, even causes security incident.As the jib lubbing mechanism oil cylinder of truck crane, in lifting, arrange in the process of installation, often at a certain height, to stay for some time, to equipment is adjusted, if now can not locked position, be very dangerous.The locking of the oil hydraulic cylinder outgoing position of prior art is to adopt hydraulic lock, the defect of the method is unstable properties, sometimes electric meeting is out of order, or pipeline leakage causes system pressure to decline, in this case, hydraulic lock will be lost and tighten function, cannot guarantee that the outgoing position of piston rod is constant, to production, brings potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of oil cylinder of band brake structure, and a kind of compact structure can be provided, easy and simple to handle, and working stability is suitable for the safe locking device of hydraulic jack reliably.
For solving the problems of the technologies described above, the oil cylinder of a kind of band brake structure that the utility model provides, comprise oil cylinder body and braking device, described oil cylinder body comprises cylinder barrel, piston rod and piston, the two ends of described cylinder barrel are respectively arranged with protecgulum and bonnet, the leading portion of described piston rod is provided with groove, the top of described piston rod is provided with piston rod inclined-plane, described braking device is arranged on the below of described bonnet, described braking device comprises braking cylinder barrel and brake piston bar, the two ends of described braking cylinder barrel arrange respectively braking protecgulum and braking bonnet, the center hole of described braking protecgulum and braking bonnet coordinates with the motive sealing of brake piston bar, between described braking bonnet and brake piston bar, be provided with spring, the leading portion of described brake piston bar is provided with the protuberance matching with described groove, on described protuberance, be provided with the inclined-plane paralleling with described piston rod inclined-plane.
Preferably, between described braking bonnet and brake piston bar, be provided with spring, between described braking protecgulum and bonnet, between described braking cylinder barrel and braking protecgulum, described braking cylinder barrel is bolt between bonnet and is connected with braking.
The oil cylinder of band brake structure provided by the utility model, can provide a kind of compact structure, easy and simple to handle, and working stability is suitable for the safe locking device of hydraulic jack reliably.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the cylinder structure generalized section that the utility model provides band brake structure;
Fig. 2 is that the utility model provides the oil cylinder A of band brake structure to structural representation;
Fig. 3 is the oil cylinder partial enlarged drawing that the utility model provides band brake structure.
Main description of reference numerals:
Cylinder barrel 1 through hole 2
Piston rod 3 grooves 31
Piston rod inclined-plane 32 pistons 4
Hydraulic fluid port 5 protecgulums 6
Bonnet 7 braking hydraulic fluid ports 8
Braking cylinder barrel 9 brake piston bars 10
Protuberance 101
Braking protecgulum 11 braking bonnets 12
Spring 13 bolts 14.
Embodiment
For your auditor can be had a better understanding and awareness the purpose of this utility model, feature and effect, below coordinate accompanying drawing to describe in detail as after.
As Figure 1-3, for the utility model provides the oil cylinder of band brake structure, comprise oil cylinder body and braking device, described oil cylinder body comprises cylinder barrel 1, piston rod 3 and piston 4, the two ends of described cylinder barrel 1 are respectively arranged with protecgulum 6 and bonnet 7, between described protecgulum 6 and bonnet 7, be provided with through hole 2, described through hole 2 coordinates with piston rod 3 motive sealings; The front end top of described cylinder barrel 1 is provided with hydraulic fluid port 5, and described piston 4 is fixedly mounted on described cylinder barrel 1 inwall;
On described bonnet 7, be provided with braking hydraulic fluid port 8, described braking device is fixedly connected on the below of described bonnet 7 by bolt 14, described braking device comprises braking cylinder barrel 9 and brake piston bar 10, the two ends of described braking cylinder barrel 9 arrange respectively braking protecgulum 11 and braking bonnet 12, the center hole of described braking protecgulum 11 and braking bonnet 12 coordinates with 10 motive sealings of brake piston bar, between described braking bonnet 12 and brake piston bar 10, be provided with spring 13, between described braking protecgulum 11 and bonnet 7, between braking cylinder barrel 9 and braking protecgulum 11, braking cylinder barrel 9 is bolt between bonnet 12 and is connected with braking.
The leading portion of described piston rod 3 is provided with groove 31, and described brake piston bar 10 leading portions are provided with the protuberance 101 matching with described groove 31, for fixed piston rod 3.The top of described piston rod 3 is provided with piston rod inclined-plane 32, and described protuberance 101 is provided with and the described inclined-plane that has piston rod inclined-plane 32 to parallel.
Working principle of the present utility model is: when oil cylinder need to be locked, while braking, in hydraulic fluid port 5, pass into liquid, hydraulic drives piston rod 3 moves right, piston rod inclined-plane 32 contacts with the inclined-plane of protuberance 101, promotes the elastic force that brake piston bar 10 overcomes spring 13 and moves downward, when protuberance 101 enters in the groove 31 of piston rod 3, oil cylinder is locked, i.e. oil cylinder braking.
When oil cylinder needs release, in braking hydraulic fluid port 8, pass into liquid, the elastic force that hydraulic driving brake piston bar 10 overcomes spring 13 moves downward, piston rod 3 is to left movement simultaneously, when protuberance 101 exits the groove 31 of piston rod 3, piston rod 3 is to left movement, oil cylinder release.
By specific embodiment, the utility model is had been described in detail above, but these not form restriction of the present utility model.In the situation that not departing from the utility model principle, those skilled in the art also can make many distortion and improvement, and these also should be considered as protection domain of the present utility model.
Claims (2)
1. the oil cylinder of a band brake structure, comprise oil cylinder body and braking device, described oil cylinder body comprises cylinder barrel, piston rod and piston, the two ends of described cylinder barrel are respectively arranged with protecgulum and bonnet, it is characterized in that, the leading portion of described piston rod is provided with groove, the top of described piston rod is provided with piston rod inclined-plane, described braking device is arranged on the below of described bonnet, described braking device comprises braking cylinder barrel and brake piston bar, the two ends of described braking cylinder barrel arrange respectively braking protecgulum and braking bonnet, the center hole of described braking protecgulum and braking bonnet coordinates with the motive sealing of brake piston bar, between described braking bonnet and brake piston bar, be provided with spring, the leading portion of described brake piston bar is provided with the protuberance matching with described groove, on described protuberance, be provided with the inclined-plane paralleling with described piston rod inclined-plane.
2. the oil cylinder of band brake structure as claimed in claim 1, it is characterized in that, between described braking bonnet and brake piston bar, be provided with spring, between described braking protecgulum and bonnet, between described braking cylinder barrel and braking protecgulum, described braking cylinder barrel is bolt between bonnet and is connected with braking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278770.8U CN203847483U (en) | 2014-05-28 | 2014-05-28 | Oil cylinder with braking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278770.8U CN203847483U (en) | 2014-05-28 | 2014-05-28 | Oil cylinder with braking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847483U true CN203847483U (en) | 2014-09-24 |
Family
ID=51560508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420278770.8U Expired - Fee Related CN203847483U (en) | 2014-05-28 | 2014-05-28 | Oil cylinder with braking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967868A (en) * | 2014-05-28 | 2014-08-06 | 福建永智机械设备有限公司 | Oil cylinder with braking structure |
-
2014
- 2014-05-28 CN CN201420278770.8U patent/CN203847483U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967868A (en) * | 2014-05-28 | 2014-08-06 | 福建永智机械设备有限公司 | Oil cylinder with braking structure |
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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: 20140924 Termination date: 20170528 |