CN201843859U - Hydraulic cylinder with buffer regulating valve - Google Patents
Hydraulic cylinder with buffer regulating valve Download PDFInfo
- Publication number
- CN201843859U CN201843859U CN2010205697368U CN201020569736U CN201843859U CN 201843859 U CN201843859 U CN 201843859U CN 2010205697368 U CN2010205697368 U CN 2010205697368U CN 201020569736 U CN201020569736 U CN 201020569736U CN 201843859 U CN201843859 U CN 201843859U
- Authority
- CN
- China
- Prior art keywords
- hydraulic oil
- oil channel
- cylinder
- hydraulic
- mounting hole
- 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
- 230000001105 regulatory Effects 0.000 title abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 34
- 230000000051 modifying Effects 0.000 claims description 18
- 230000003139 buffering Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001340 slower Effects 0.000 description 1
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Abstract
The utility model discloses a hydraulic cylinder with a buffer regulating valve. The hydraulic cylinder comprises a cylinder barrel, a piston rod and a piston which are arranged in the cylinder barrel. The cylinder bottom of the cylinder barrel is provided with a hydraulic oil channel and a mounting hole communicated with the hydraulic oil channel respectively. A valve plug of the buffer regulating valve is arranged in the mounting hole. When the tail part of the piston rod which stretches into one end of the inner part of the cylinder barrel stretches into an opening of the hydraulic oil channel at the cylinder bottom, the hydraulic oil flows out of the cylinder bottom through the position of the valve plug. The top end of the valve plug stretches into the hydraulic oil channel, and the shape of the top end of the valve plug is cylindrical. The hydraulic cylinder with the buffer regulating valve has the advantages that the shape of the top end of the valve plug arranged in the hydraulic oil channel is cylindrical, and the stroke is shorter during the flow regulation, so that the valve is beneficially mounted in the smaller hydraulic cylinder. In addition, a seal ring is arranged outside an adjusting thread of the valve plug, so as to facilitate processing, prickle removal and mounting, reduce a cutting ring and a pull ring and improve the sealing reliability.
Description
Technical field
The utility model relates to the hydraulic machinery technical field, relates in particular to a kind of hydraulic jack that cushions modulating valve that has.
Background technique
Hydraulic jack is the engineering mechanical components of using always, is made of cylinder barrel and the piston rod and the piston that are positioned at cylinder barrel, and the end that piston rod stretches into cylinder barrel inside is equipped with piston, and when hydraulic oil promoted piston, it is reciprocal that piston can drive piston rod.
The termination that piston rod stretches into the inner end of cylinder barrel is commonly referred to as buffer plunger, and buffer plunger can partly match with the cylinder bottom of cylinder barrel, realizes buffering to piston rod movement by the flow of control hydraulic oil.
In order to cooperate, partly to be provided with hydraulic oil channel at cylinder bottom, and the buffering modulating valve is set in passage with buffer plunger, when buffer plunger stretches into the inlet of cylinder bottom hydraulic oil channel, hydraulic fluid flow rate changes, and piston rod movement speed slows down, until piston rod movement to limit position.
Referring to Fig. 1, the mounting hole that has hydraulic oil channel and be communicated with it at cylinder bottom 4 in the prior art, the spool 2 of buffering modulating valve is housed in the mounting hole, spool 2 cooperates with the mounting hole inner wall sealing by seal ring 1, and spool 2 tops are stretched in the hydraulic oil channel of cylinder bottom 4, when buffer plunger 3 enters the inlet of hydraulic oil channel of cylinder bottom 4, hydraulic oil can only flow out cylinder bottom 4 through spool 2 positions, the axial position of spool 2 in mounting hole can be regulated, and changes flow area, thereby regulates the intensity of buffering.
But to be arranged in the end shape of hydraulic oil channel be cone to spool 2 in the prior art, and stroke is bigger when regulating flow, is unfavorable for being installed in the less hydraulic jack of volume.Seal ring 1 is arranged on the adjusting screw thread inboard of spool 2 in the prior art in addition, promptly more close hydraulic oil channel, and like this processing is also inconvenient.
The model utility content
The utility model provide a kind of easy to process, help being installed in the buffering modulating valve in the less hydraulic jack of volume.
A kind of hydraulic jack that cushions modulating valve that has, the piston rod and the piston that comprise cylinder barrel and be positioned at cylinder barrel, the mounting hole that partly is provided with hydraulic oil channel and communicates at the cylinder bottom of cylinder barrel with hydraulic oil channel, the spool of described buffering modulating valve is housed in the mounting hole, when the opening of cylinder bottom hydraulic oil channel is stretched in the termination of piston rod, hydraulic oil flows out cylinder bottom by the spool position, and described spool top is stretched in the hydraulic oil channel, and this position, top be shaped as cylindrical.
As preferably, described columniform top is along having chamfering or fillet.
Be sealed and matched by seal ring between described spool and the mounting hole inwall, described spool outer wall has the adjusting screw thread, matches with the internal thread of mounting hole inwall.
As preferably, described seal ring is positioned at regulates the side of screw thread away from the cylinder bottom hydraulic oil channel.
The double buffering of having done of cylinder bottom part is regulated valve housing in the utility model, so just can directly spool be embedded in the cylinder bottom.
The beneficial effects of the utility model are that the end shape that spool is arranged in hydraulic oil channel is cylindrical, and stroke is less when regulating flow, are beneficial to be installed in the less hydraulic jack of volume.Seal ring is arranged on the adjusting screw thread outside of spool in addition, is convenient to processing, deburring and installation, reduces to cut to enclose and draws circle, improves the reliability of sealing.
Description of drawings
Fig. 1 has the structural representation of the hydraulic jack that cushions modulating valve for prior art;
Fig. 2 has the structural representation of the hydraulic jack that cushions modulating valve for the utility model.
Embodiment
Referring to Fig. 2, the utility model has the hydraulic jack (only having represented to have the cylinder bottom position of spool among the figure) that cushions modulating valve, the piston rod and the piston that comprise cylinder barrel and be positioned at cylinder barrel, at the mounting hole that the cylinder bottom 4 of cylinder barrel is provided with hydraulic oil channel and communicates with hydraulic oil channel, hydraulic oil channel is made of passage A, channel B and the channel C among the figure.
The spool 2 of buffering modulating valve is housed in the mounting hole, and the connection part of channel B and channel C is stretched on spool 2 tops, and this position, top be shaped as cylindrically, edge, columniform top has chamfering.
Be sealed and matched by seal ring 1 between spool 2 bottoms and the mounting hole inwall, the outer wall at spool middle part has the adjusting screw thread, matches with the internal thread of mounting hole inwall.Visible seal ring 1 is positioned at and regulates the side of screw thread away from the cylinder bottom hydraulic oil channel among the figure.
It is as follows that the utility model has the hydraulic jack principle that cushions modulating valve:
When the buffer plunger 3 of piston rod afterbody stretches into the opening of passage A of cylinder bottom 4, the opening of passage A is blocked, hydraulic oil can only go out cylinder bottom 4 through channel B, spool 2 and channel C, by rotary spool 2, the axial position of regulating spool 2 in mounting hole just can change the flow area between channel B and channel C, thereby regulates the intensity of buffering, 1 pair of spool 2 of seal ring and mounting hole seal, and prevent hydraulic fluid leak.
Claims (5)
1. one kind has the hydraulic jack that cushions modulating valve, the piston rod and the piston that comprise cylinder barrel and be positioned at cylinder barrel, the mounting hole that partly is provided with hydraulic oil channel and communicates at the cylinder bottom of cylinder barrel with hydraulic oil channel, the spool of described buffering modulating valve is housed in the mounting hole, when the opening of cylinder bottom hydraulic oil channel is stretched in the termination of piston rod, hydraulic oil flows out cylinder bottom by the spool position, it is characterized in that, described spool top is stretched in the hydraulic oil channel, and this position, top be shaped as cylindrical.
2. the hydraulic jack that cushions modulating valve that has as claimed in claim 1 is characterized in that, described columniform top is along having chamfering or fillet.
3. the hydraulic jack that cushions modulating valve that has as claimed in claim 2 is characterized in that, is sealed and matched by seal ring between described spool and the mounting hole inwall.
4. the hydraulic jack that cushions modulating valve that has as claimed in claim 3 is characterized in that described spool outer wall has the adjusting screw thread, matches with the internal thread of mounting hole inwall.
5. the hydraulic jack that cushions modulating valve that has as claimed in claim 4 is characterized in that, described seal ring is positioned at regulates the side of screw thread away from the cylinder bottom hydraulic oil channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205697368U CN201843859U (en) | 2010-10-20 | 2010-10-20 | Hydraulic cylinder with buffer regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205697368U CN201843859U (en) | 2010-10-20 | 2010-10-20 | Hydraulic cylinder with buffer regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843859U true CN201843859U (en) | 2011-05-25 |
Family
ID=44038751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205697368U Expired - Fee Related CN201843859U (en) | 2010-10-20 | 2010-10-20 | Hydraulic cylinder with buffer regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367827A (en) * | 2011-09-19 | 2012-03-07 | 大连维乐液压制造有限公司 | Unidirectional adjustable buffer air evacuation valve of oil cylinder |
-
2010
- 2010-10-20 CN CN2010205697368U patent/CN201843859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367827A (en) * | 2011-09-19 | 2012-03-07 | 大连维乐液压制造有限公司 | Unidirectional adjustable buffer air evacuation valve of oil 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: 20110525 Termination date: 20141020 |
|
| EXPY | Termination of patent right or utility model |