CN202220769U - Retractable rotary hydraulic cylinder - Google Patents
Retractable rotary hydraulic cylinder Download PDFInfo
- Publication number
- CN202220769U CN202220769U CN2011203254694U CN201120325469U CN202220769U CN 202220769 U CN202220769 U CN 202220769U CN 2011203254694 U CN2011203254694 U CN 2011203254694U CN 201120325469 U CN201120325469 U CN 201120325469U CN 202220769 U CN202220769 U CN 202220769U
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- piston rod
- spiral guide
- piston
- hydraulic cylinder
- guide groove
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Abstract
The utility model discloses a retractable rotary hydraulic cylinder, which comprises a cylinder block, a piston and piston rods. The piston rods are arranged on two sides of the piston respectively, a rotary guide device is arranged between the cylinder block and the piston rod at least on one side of the piston and comprises a spiral guide groove which is arranged on the piston rod, a limiting screw plug matched with the spiral guide groove is fixed to the inner wall of the cylinder block, and the limiting screw plug is clamped in the spiral guide groove and capable of sliding along the spiral guide groove. The spiral guide groove and the limiting pin which are matched with each other are additionally arranged between the piston rod and the cylinder block of the retractable rotary hydraulic cylinder, and when the piston rod of the hydraulic cylinder moves linearly, the limiting pin clamped in the spiral guide groove drives the piston rod to rotate simultaneously, so that the piston rod can rotate while moving linearly. The retractable rotary hydraulic cylinder is simple in structure and reliable in action, additional mechanisms for completing composite actions are omitted, and thereby cost is lowered and economic benefit is improved.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, especially relates to a kind of flexible rotary type hydraulic cylinder.
Background technique
Oil hydraulic cylinder is the hydraulic actuator that hydraulic pressure can be changed into mechanical energy, when realizing to-and-fro motion with it, can remove speed reducer from, and not have drive gap, and motion is steady, in the hydraulic system of extensive use with various machineries.Conventional cylinder comprises cylinder body, piston and piston rod; Have oil inlet and outlet on the cylinder body; Through the turnover of hydraulic oil, realize the motion of piston and piston rod, realize various control functions through external member again; The motion of this hydraulic rod is the linear type motion, and the external member that is driven is also in company with doing straight line motion.
In actual production process, the many external members that driven by oil hydraulic cylinder not only need rectilinear path, also need spinning movement simultaneously, but oil hydraulic cylinder itself can not be realized spinning movement, and in order to satisfy demand of practical production, the rotary type hydraulic cylinder is just indispensable.At present, the method that generally adopts is through setting up other hydraulic system, perhaps adopts valve group and other other subsidiary bodies to realize the spinning movement of oil hydraulic cylinder, has the complex structure of whole hydraulic system, the shortcoming that cost is higher.
The model utility content
To above-mentioned technical problem, the purpose of the utility model is to provide a kind of flexible rotary type hydraulic cylinder, its have simple in structure, be easy to control, cost is low, can realize that piston rod doing the straight-line characteristics of accomplishing spinning movement simultaneously.
The purpose of the utility model is to realize through following technological scheme:
A kind of flexible rotary type hydraulic cylinder, it comprises cylinder body, piston and piston rod, and the both sides of said piston are provided with piston rod, and wherein, said piston has at least between piston rod and the cylinder body of a side and is provided with the rotary steering device.
Especially, said rotary steering device comprises the spiral guide slot that is opened on the piston rod, cooperates spiral guide slot on inboard wall of cylinder block, to be fixed with position limit pin, and said position limit pin is stuck in the spiral guide slot and can slides along spiral guide slot.
Especially, said position limit pin is spacing plug screw.
The beneficial effect of the utility model does; Said flexible rotary type hydraulic cylinder is set up spiral guide slot and the position limit pin that cooperatively interacts between piston rod and cylinder body; When the piston rod of oil hydraulic cylinder when doing straight line motion, be stuck in position limit pin in the spiral guide slot and will order about piston rod and rotate simultaneously, compare with conventional cylinder; Not only simple in structure, reliable in action; And saved and accomplished the required additional mechanism providing additional operation of composite move, reduced expense, improved economic benefit.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural representation of the flexible rotary type hydraulic cylinder of the utility model.
Among the figure:
1, cylinder body; 2, piston rod; 3, piston; 4, rotary sleeve; 5, spacing plug screw; 6, spiral guide slot; 7, cylinder cap; 8, first hydraulic fluid port; 9, second hydraulic fluid port.
Embodiment
Please with reference to shown in Figure 1, Fig. 1 is the structural representation of the flexible rotary type hydraulic cylinder of the utility model.In present embodiment; Said flexible rotary type hydraulic cylinder comprise piston 3, piston rod 2, cylinder body 1 and with first hydraulic fluid port 8 and second hydraulic fluid port 9 of cylinder body 1 intracavity inter-connection; The two ends of said cylinder body 1 are fixed with cylinder cap 7, and said piston rod 2 passes piston 3 and runs through whole cylinder body 1, offer spiral guide slot 6 on the side piston rod 2 of said piston 3; Cooperate spiral guide slot 6 on cylinder body 1 inwall, to be fixed with an end of spacing plug screw 5; The other end of said spacing plug screw 5 is arranged in the spiral guide slot 6, when piston rod 2 is done straight line motion, can drive piston rod 2 by the effect of spacing plug screw 5 and spiral guide slot 6 and implement the turns action.
Working principle is: when oil-feed; From first hydraulic fluid port, 8 incoming pressures oil, pressure oil promotes piston rod 2 setting in motions, at this moment; The spacing plug screw 5 that is stuck in the spiral guide slot 6 will slide along spiral guide slot 6; Under the effect of spacing plug screw 5, piston rod 2 will do the sense of rotation of straight-line while along spiral guide slot 6 begin the rotation, finish up to stroke; When oil return, the principle during with oil-feed is identical, second hydraulic fluid port, 9 incoming pressures oil; Pressure oil promotes piston rod 2 motions, and spacing plug screw 5 slides along spiral guide slot 6, and piston rod 2 begins rotation under the effect of spacing plug screw 5; And the action of rotating when spinning movement and oil-feed is opposite; Thus, piston rod 2 will finish up to stroke doing the straight-line spinning movement of accomplishing simultaneously.
Be appreciated that between piston rod 2 and cylinder body 1 inwall of both sides of said piston 3 and be provided with the spiral guide slot 6 and spacing plug screw 5 that cooperatively interacts.
Above-mentioned flexible rotary type hydraulic cylinder realizes that through the optimization to this body structure of oil hydraulic cylinder piston rod 2 doing the straight-line spinning movement of accomplishing simultaneously; Not only simple in structure, be easy to control; And satisfied work requirements; Saved and accomplished the required additional mechanism providing additional operation of composite move, lowered expense, improved economic benefit.
Above embodiment has just set forth the basic principle and the characteristic of the utility model, changes according to the change that the position is set of spiral guide slot and spacing plug screw.The utility model is not limited by above-mentioned example, and under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various variations and change, and these variations and change all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (3)
1. flexible rotary type hydraulic cylinder, it comprises cylinder body, piston and piston rod, the both sides of said piston are provided with piston rod, it is characterized in that: said piston has at least between piston rod and the cylinder body of a side and is provided with the rotary steering device.
2. flexible rotary type hydraulic cylinder according to claim 1; It is characterized in that: said rotary steering device comprises the spiral guide slot that is opened on the piston rod, cooperates spiral guide slot on inboard wall of cylinder block, to be fixed with position limit pin, and said position limit pin is stuck in the spiral guide slot and can slides along spiral guide slot.
3. flexible rotary type hydraulic cylinder according to claim 2; It is characterized in that: said position limit pin is spacing plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203254694U CN202220769U (en) | 2011-09-01 | 2011-09-01 | Retractable rotary hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203254694U CN202220769U (en) | 2011-09-01 | 2011-09-01 | Retractable rotary hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220769U true CN202220769U (en) | 2012-05-16 |
Family
ID=46042796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203254694U Expired - Fee Related CN202220769U (en) | 2011-09-01 | 2011-09-01 | Retractable rotary hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322457A (en) * | 2011-09-01 | 2012-01-18 | 无锡市长江液压缸厂 | Telescopic-swivel hydraulic cylinder |
| CN105041758A (en) * | 2015-08-14 | 2015-11-11 | 中国船舶重工集团公司第七一九研究所 | Integrated hydraulic cylinder with functions of rotating and telescoping |
-
2011
- 2011-09-01 CN CN2011203254694U patent/CN202220769U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322457A (en) * | 2011-09-01 | 2012-01-18 | 无锡市长江液压缸厂 | Telescopic-swivel hydraulic cylinder |
| CN102322457B (en) * | 2011-09-01 | 2015-12-16 | 无锡市长江液压缸厂 | A kind of Telescopic-swivel hydraulic cylinder |
| CN105041758A (en) * | 2015-08-14 | 2015-11-11 | 中国船舶重工集团公司第七一九研究所 | Integrated hydraulic cylinder with functions of rotating and telescoping |
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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: 20120516 Termination date: 20190901 |