CN203939803U - Oil cylinder for hoisting arm expansion device - Google Patents
Oil cylinder for hoisting arm expansion device Download PDFInfo
- Publication number
- CN203939803U CN203939803U CN201420217655.XU CN201420217655U CN203939803U CN 203939803 U CN203939803 U CN 203939803U CN 201420217655 U CN201420217655 U CN 201420217655U CN 203939803 U CN203939803 U CN 203939803U
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- CN
- China
- Prior art keywords
- cylinder barrel
- joint
- knock
- little
- outer end
- 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
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of oil cylinder for hoisting arm expansion device, include have little cylinder barrel (4) and knock-off joint (5) oil cylinder body, be set to the cylinder barrel cover (6) that connects with the end, outer end of little cylinder barrel (4), the end, outer end of little cylinder barrel (4) is set to extend in the outside, end, outer end of knock-off joint (5), make cylinder barrel cover (6) connect and not connect with knock-off joint (5) with little cylinder barrel (4), thereby make the designs simplification of knock-off joint (5), no longer on knock-off joint (5), be provided with cylinder barrel cover (6), therefore simplify technique, improved the performance of parts.
Description
One, technical field
The utility model relates to a kind of oil cylinder, especially a kind of oil cylinder for hoisting arm expansion device.
Two, background technique
Along with the application of flexible oil duct oil cylinder in hoisting arm expansion mechanism, to cancel high pressure hose and hose reel, make hoisting arm expansion mechanism construction simple, cost is low, reliability is high, therefore the oil cylinder for hoisting arm expansion device is a kind of important engineering part, at the existing oil cylinder for hoisting arm expansion device, the flexible little cylinder barrel of oil duct oil cylinder is in the inner not lengthening of piston rod, sleeve is processed on knock-off joint, it is split type that this just requires knock-off joint to make, after the knock-off joint having welded, process sleeve dimensions, this structural requirement sleeve diameter of this structure increases, improved the difficulty of processing technology.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of this utility model is to provide a kind of oil cylinder for hoisting arm expansion device, has therefore simplified technique, has improved the performance of parts.
For achieving the above object, the technological scheme that the utility model is taked is: include have little cylinder barrel and knock-off joint oil cylinder body, be set to the cylinder barrel cover that connects with the end, outer end of little cylinder barrel, the end, outer end of little cylinder barrel is set to extend in the outside, end, outer end of knock-off joint.
Owing to having designed cylinder barrel cover, little cylinder barrel and knock-off joint, make cylinder barrel cover connect and not connect with knock-off joint with little cylinder barrel, thereby make the designs simplification of knock-off joint, no longer on knock-off joint, be provided with cylinder barrel cover, therefore simplified technique, improved the performance of parts.
The utility model has designed, oil cylinder body also includes piston rod head, the body of rod and oil pipe, piston rod head is set to connect with the end, one end of the body of rod, cavity port part at the other end of the body of rod is provided with knock-off joint, in the cavity that little cylinder barrel is set to go here and there knock-off joint and be arranged on the body of rod, the end, outer end of little cylinder barrel is set to extend in the outside, end, outer end of knock-off joint and is set to connect with cylinder barrel cover, and oil pipe is arranged between the body of rod and little cylinder barrel.
The utility model has designed, and knock-off joint and cylinder barrel cover are set to split type.
The utility model has designed, and the length that little cylinder barrel extends in the end, outer end of knock-off joint is set to 100-500mm.
Technique effect of the present utility model is: because knock-off joint is made of one and little cylinder barrel puts after being machined to finished product and welds, simplified the processing technology of piston rod, increased work efficiency.Change knock-off joint welding into integral stem joint, the size of little cylinder barrel cover is processed by postwelding, changes into after being machined to finished product and welding, and has simplified the processing technology of piston rod, has greatly improved working efficiency.
In the technical program, be arranged on little cylinder barrel and the cylinder barrel cover that is not arranged on knock-off joint is important technical characteristics, in the technical field of the oil cylinder for hoisting arm expansion device, there is novelty, creativeness and practicability.
Four, accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Five, embodiment
Fig. 1 is first embodiment of the present utility model, illustrates by reference to the accompanying drawings the present embodiment, includes piston rod head 1, the body of rod 2, oil pipe 3, little cylinder barrel 4, knock-off joint 5 and cylinder barrel cover 6,
Piston rod head 1 is set to connect with the end, one end of the body of rod 2, cavity port part at the other end of the body of rod 2 is provided with knock-off joint 5, little cylinder barrel 4 is set to go here and there knock-off joint 5 being arranged in the cavity of the body of rod 2, the end, outer end of little cylinder barrel 4 is set to extend in the outside, end, outer end of knock-off joint 5 and is set to connect with cylinder barrel cover 6, and oil pipe 3 is arranged between the body of rod 2 and little cylinder barrel 4.
In the present embodiment, knock-off joint 5 and cylinder barrel cover 6 are set to split type.
In the present embodiment, the length that little cylinder barrel 4 extends in the end, outer end of knock-off joint 5 is set to 100mm.
Little cylinder barrel 4 is added and grows to knock-off joint 5 right-hand members, and at little cylinder barrel 4 right-hand member weldering cylinder barrel covers 6, knock-off joint 5 is welding bars joint 5 sleeves no longer, have simplified the processing technology of knock-off joint 5, change knock-off joint 5 welding into integral stem joint; The size of cylinder barrel cover 6 is processed by postwelding, changes into after being machined to finished product and welding.
Second embodiment of the present utility model, the length that little cylinder barrel 4 extends in the end, outer end of knock-off joint 5 is set to 500mm.
The 3rd embodiment of the present utility model, the length that little cylinder barrel 4 extends in the end, outer end of knock-off joint 5 is set to 300mm.
The 4th embodiment of the present utility model, the length that little cylinder barrel 4 extends in the end, outer end of knock-off joint 5 is set to 110mm.
The utlity model has lower feature:
1, owing to having designed cylinder barrel cover 6, little cylinder barrel 4 and knock-off joint 5, make cylinder barrel cover 6 connect and not connect with knock-off joint 5 with little cylinder barrel 4, thereby make the designs simplification of knock-off joint 5, no longer on knock-off joint 5, be provided with cylinder barrel cover 6, therefore simplify technique, improved the performance of parts.
2,, owing to having designed cylinder barrel cover 6, little cylinder barrel 4 and knock-off joint 5, also simplified the preparation process of cylinder barrel cover 6.
3, owing to having designed piston rod head 1, the body of rod 2 and oil pipe 3, met the performance requirement of hoisting arm expansion device.
, on the little cylinder barrel extending, be welded with little cylinder barrel cover, after the size of little cylinder barrel cover changes completion of processing into, welding has reduced turning difficulty, increases work efficiency, knock-off joint is made of one, and has simplified knock-off joint processing technology, reduces difficulty of processing.
Also have other be arranged on little cylinder barrel 4 on and cylinder barrel cover 6 technical characteristicss that connect that are not arranged on knock-off joint 5 are all one of embodiments of the present utility model; therefore in the oil cylinder technical field for hoisting arm expansion device; every include there is the oil cylinder body of little cylinder barrel 4 and knock-off joint 5, the cylinder barrel cover 6 that is set to connect with the end, outer end of little cylinder barrel 4, the end, outer end of little cylinder barrel 4 is set to extend in the technology contents in outside, end, outer end of knock-off joint 5 all in protection domain of the present utility model.
Claims (1)
1. the oil cylinder for hoisting arm expansion device; It is characterized in that: include have little cylinder barrel (4) and knock-off joint (5) oil cylinder body, be set to the cylinder barrel cover (6) that connects with the end, outer end of little cylinder barrel (4), the end, outer end of little cylinder barrel (4) is set to extend in the outside, end, outer end of knock-off joint (5).
2. the oil cylinder for hoisting arm expansion device according to claim 1; It is characterized in that: oil cylinder body also includes piston rod head (1), the body of rod (2) and oil pipe (3), piston rod head (1) is set to connect with the end, one end of the body of rod (2), cavity port part at the other end of the body of rod (2) is provided with knock-off joint (5), little cylinder barrel (4) is set to go here and there knock-off joint (5) being arranged in the cavity of the body of rod (2), the end, outer end of little cylinder barrel (4) is set to extend in the outside, end, outer end of knock-off joint (5) and be set to connect with cylinder barrel cover (6), and oil pipe (3) is arranged between the body of rod (2) and little cylinder barrel (4).
3. the oil cylinder for hoisting arm expansion device according to claim 2; It is characterized in that: knock-off joint (5) and cylinder barrel cover (6) are set to split type.
4. the oil cylinder for hoisting arm expansion device according to claim 2; It is characterized in that: the length that little cylinder barrel (4) extends in the end, outer end of knock-off joint (5) is set to 100-500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217655.XU CN203939803U (en) | 2014-04-30 | 2014-04-30 | Oil cylinder for hoisting arm expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217655.XU CN203939803U (en) | 2014-04-30 | 2014-04-30 | Oil cylinder for hoisting arm expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939803U true CN203939803U (en) | 2014-11-12 |
Family
ID=51859119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420217655.XU Expired - Fee Related CN203939803U (en) | 2014-04-30 | 2014-04-30 | Oil cylinder for hoisting arm expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939803U (en) |
-
2014
- 2014-04-30 CN CN201420217655.XU patent/CN203939803U/en not_active Expired - Fee Related
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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: 20141112 |