CN208831370U - Double Acting Telescopic Hydraulic Cylinder balances valve group - Google Patents
Double Acting Telescopic Hydraulic Cylinder balances valve group Download PDFInfo
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- CN208831370U CN208831370U CN201821615526.0U CN201821615526U CN208831370U CN 208831370 U CN208831370 U CN 208831370U CN 201821615526 U CN201821615526 U CN 201821615526U CN 208831370 U CN208831370 U CN 208831370U
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- oil outlet
- oil inlet
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Abstract
The utility model discloses a kind of Double Acting Telescopic Hydraulic Cylinders to balance valve group, it is related to balanced valve field, it include: balance valve block, which is provided with the first oil inlet end, the second oil inlet end and the first oil outlet, be additionally provided with the first oil inlet end, unilaterally connected first oil outlet of the first oil outlet and with unilaterally connected second oil outlet of the second oil inlet end.First balanced valve is set in balance valve block, is connected respectively with the first oil outlet and the first oil outlet, and when oil enters the second oil outlet from the second oil inlet end, the first balanced valve is connected to the first oil outlet and the first oil outlet by the first balanced valve.Second balanced valve is set in balance valve block, is connected respectively with the second oil inlet end and the second oil outlet, and when oil enters the first oil outlet from the first oil inlet end, the second balanced valve is connected to the second oil outlet and the second oil inlet end by the second balanced valve.The utility model can solve the larger piston area of multistage hydraulic cylinder problem more unmatched than caused reversal valve and rodless cavity return flow.
Description
Technical field
The utility model relates to balanced valve fields, and in particular to a kind of Double Acting Telescopic Hydraulic Cylinder balance valve group.
Background technique
On hydraulic construction machine or Large Hydraulic Equipment, due to being limited by installation space, load it is complicated and changeable, lead to
It often needs using multistage hydraulic cylinder, and works under alternating load.In order to overcome load, hydraulic cylinder generallys use balanced valve,
But due to the biggish piston area ratio (rodless cavity/rod chamber) of Double Acting Telescopic Hydraulic Cylinder, usual rodless cavity area and rod chamber
Area ratio can reach 5 or so, even higher.When causing the oil inlet of hydraulic cylinder rod chamber, rodless cavity return flow is very large
(compared with rod chamber), this requirement for multistage hydraulic cylinder reversal valve is very high, and will seriously affect the service life of reversal valve
And reliability.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide one kind can effectively overcome multistage
The load of hydraulic cylinder, while solving the larger piston area of multistage hydraulic cylinder than caused reversal valve and rodless cavity oil return stream
Unmatched problem is measured, the Double Acting Telescopic Hydraulic Cylinder balance valve group for extending reversal valve service life, promoting reversal valve reliability.
To achieve the above objectives, the technical scheme adopted by the utility model is that:
A kind of Double Acting Telescopic Hydraulic Cylinder balance valve group, comprising:
Balance valve block which is provided with the first oil inlet end, the second oil inlet end and the first oil outlet, also set in the balance valve block
Have with first oil inlet end, unilaterally connected first oil outlet of the first oil outlet and with the second oil inlet end unilaterally connected
The second oil outlet；
First balanced valve, be set to the balance valve block in, first balanced valve respectively with first oil outlet and
First oil outlet is connected, and first balanced valve is configured to: when oil enters the second oil outlet from second oil inlet end,
First balanced valve is connected to first oil outlet and the first oil outlet by the first balanced valve；And
Second balanced valve, be set to the balance valve block in, second balanced valve respectively with second oil inlet end and
Second oil outlet is connected, and second balanced valve is configured to: when oil enters the first oil outlet from first oil inlet end,
Second balanced valve is connected to second oil outlet and the second oil inlet end by the second balanced valve.
Based on the above technical solution, the Double Acting Telescopic Hydraulic Cylinder balance valve group further includes the first check valve,
The oil inlet of first check valve is connected to first oil inlet end, and the oil outlet of first check valve goes out with described first
Hydraulic fluid port connection.
Based on the above technical solution, first balanced valve includes:
First balanced valve oil inlet is connected to first oil outlet；
First load port is connected to the oil outlet of first oil outlet and the first check valve simultaneously；
First control port is connected to by oil duct with second oil inlet end.
Based on the above technical solution, second balanced valve includes:
Second balanced valve oil inlet is connected to second oil inlet end；
Second load port is connected to second oil outlet；
Second control port is connected to by oil duct with first oil inlet end.
Based on the above technical solution, the Double Acting Telescopic Hydraulic Cylinder balance valve group further includes pressure measuring tie-in, institute
Pressure measuring tie-in is stated to be connected to by oil duct with first oil inlet end and the second oil inlet end.
Compared with the prior art, the advantages of the utility model are:
Double Acting Telescopic Hydraulic Cylinder in the utility model balances valve group, due to being provided with the first oil outlet, the first balance
Valve and the second balanced valve can effectively overcome the load of multistage hydraulic cylinder, and the hydraulic oil of multistage hydraulic cylinder rodless cavity can
To enter the first oil outlet of balance valve group by the first oil outlet, the first balanced valve, and directly return system fuel tank.It is being provided with
After individual oil return opening i.e. the first oil outlet, return flow can be made to efficiently solve without the reversal valve of multistage hydraulic cylinder
, the biggish piston area ratio of Double Acting Telescopic Hydraulic Cylinder, when causing the oil inlet of hydraulic cylinder rod chamber, rodless cavity return flow
The problem of very large (compared with rod chamber).
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the utility model embodiment Double Acting Telescopic Hydraulic Cylinder balances valve group.
In figure: 1- balance valve block, the first oil inlet end of 11-, the second oil inlet end of 12-, the first oil outlet of 13-, 14- first are fuel-displaced
Mouth, the second oil outlet of 15-, the first balanced valve of 2-, 21- the first balanced valve oil inlet, the first load port of 22-, 23- first control oil
Mouthful, the second balanced valve of 3-, 31- the second balanced valve oil inlet, the second load port of 32-, the second control port of 33-, 4- first is unidirectionally
Valve, 5- pressure measuring tie-in.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the utility model embodiment provides a kind of Double Acting Telescopic Hydraulic Cylinder balance valve group, including balance
Valve block 1, the first balanced valve 2 and the second balanced valve 3.
Wherein, balance valve block 1 which is provided with the first oil inlet end 11, the second oil inlet end 12 and the first oil outlet 13, balanced valve
Be additionally provided on block 1 with the first oil inlet end 11, unilaterally connected first oil outlet 14 of the first oil outlet 13 and with the second oil inlet end
12 unilaterally connected second oil outlets 15.
First balanced valve 2 is set in balance valve block 1, and the first balanced valve 2 is fuel-displaced with the first oil outlet 13 and first respectively
Mouth 14 is connected, and the first balanced valve 2 is configured to: when oil enters the second oil outlet 15 from the second oil inlet end 12, the first balance
Valve 2 is connected to the first oil outlet 14 by the first balanced valve 2 with the first oil outlet 13.
Second balanced valve 3 is set in balance valve block 1, and the second balanced valve 3 is fuel-displaced with the second oil inlet end 12 and second respectively
Mouth 15 is connected, and the second balanced valve 3 is configured to: when oil enters the first oil outlet 14 from the first oil inlet end 11, the second balance
Valve 3 is connected to the second oil outlet 15 by the second balanced valve 3 with the second oil inlet end 12.
As a preferable embodiment, Double Acting Telescopic Hydraulic Cylinder balance valve group further includes the first check valve 4, and first
The oil inlet of check valve 4 is connected to the first oil inlet end 11, and the oil outlet of the first check valve 4 is connected to the first oil outlet 14.Pass through
The unilaterally connected that first check valve 4 realizes the first oil inlet end 11 and the first oil outlet 14 is set.
Further, in this embodiment the first balanced valve 2 include:
First balanced valve oil inlet 21 is connected to the first oil outlet 13；
First load port 22 is connected to the oil outlet of the first oil outlet 14 and the first check valve 4 simultaneously；
First control port 23 is connected to by oil duct with the second oil inlet end 12.
Further, in this embodiment the second balanced valve 3 include:
Second balanced valve oil inlet 31 is connected to the second oil inlet end 12；
Second load port 32 is connected to the second oil outlet 15；
Second control port 33 is connected to by oil duct with the first oil inlet end 11.
Further, Double Acting Telescopic Hydraulic Cylinder balance valve group further includes pressure measuring tie-in 5, pressure measuring tie-in 5 by oil duct with
First oil inlet end 11 is connected to the second oil inlet end 12.
The principle of Double Acting Telescopic Hydraulic Cylinder balance valve group is introduced below:
When the high pressure liquid pressure oil of hydraulic system enters the first oil inlet end 11 of balance valve group by reversal valve, high-pressure and hydraulic
Oil will enter the rodless cavity of multistage hydraulic cylinder by the first check valve 4, the first oil outlet 14 in balance valve group, drive multistage liquid
Pressure cylinder piston bar stretches out；The high pressure liquid pressure oil of first oil inlet end 11 passes through the oil duct in balance valve block 1 simultaneously and enters the second balance
The spool of second control port 33 of valve 3, the second balanced valve 3 of driving is opened, and the second balanced valve 3 will be connected to the second oil outlet at this time
15 and second oil inlet end 12, the hydraulic oil of multistage hydraulic cylinder rod chamber can pass through the second oil outlet 15, the second balanced valve 3 enters
The second oil inlet end 12 of valve group is balanced, and system fuel tank is returned by reversal valve.
When the high pressure liquid pressure oil of hydraulic system enters the second oil inlet end 12 of balance valve group by reversal valve, high-pressure and hydraulic
Oil will enter the rod chamber of multistage hydraulic cylinder by the second balanced valve 3, the second oil outlet 15 in balance valve group, drive multistage liquid
Pressure cylinder piston bar retracts；The high pressure liquid pressure oil of second oil inlet end 12 passes through the oil duct in balance valve block 1 simultaneously and enters the first balance
The spool of first control port 23 of valve 2, the first balanced valve 2 of driving is opened, and the first balanced valve 2 will be connected to the first oil outlet at this time
14 and first oil outlet 13, the hydraulic oil of multistage hydraulic cylinder rodless cavity can pass through the first oil outlet 14, the first balanced valve 2 enters
The first oil outlet 13 of valve group is balanced, and directly returns system fuel tank.
In conclusion Double Acting Telescopic Hydraulic Cylinder in the present embodiment balances valve group, due to be provided with the first oil outlet 13,
The hydraulic oil of first balanced valve 2 and the second balanced valve 3, multistage hydraulic cylinder rodless cavity can be flat by the first oil outlet 14, first
The valve 2 that weighs enters the first oil outlet 13 of balance valve group, and directly returns system fuel tank.Go out being provided with individual oil return opening i.e. first
Behind oily end 13, return flow can be made to efficiently solve, Double Acting Telescopic Hydraulic Cylinder without the reversal valve of multistage hydraulic cylinder
Biggish piston area ratio, when causing the oil inlet of hydraulic cylinder rod chamber, rodless cavity return flow is very large (with rod chamber phase
Than) the problem of.
The utility model is not limited to above embodiment, for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within novel protection scope.The content being not described in detail in this specification belongs to well known to professional and technical personnel in the field
The prior art.
Claims (5)
1. a kind of Double Acting Telescopic Hydraulic Cylinder balances valve group characterized by comprising
Balance valve block (1) which is provided with the first oil inlet end (11), the second oil inlet end (12) and the first oil outlet (13), described flat
It is additionally provided with and first oil inlet end (11), unilaterally connected first oil outlet (14) of the first oil outlet (13) on weighing apparatus valve block (1)
And with unilaterally connected second oil outlet (15) of second oil inlet end (12)；
First balanced valve (2) is set in the balance valve block (1), and first balanced valve (2) is fuel-displaced with described first respectively
End (13) is connected with the first oil outlet (14), and first balanced valve (2) is configured to: when oil is from second oil inlet end (12)
When entering the second oil outlet (15), first balanced valve (2) makes first oil outlet (14) and the first oil outlet (13)
It is connected to by the first balanced valve (2)；And
Second balanced valve (3), be set to the balance valve block (1) in, second balanced valve (3) respectively with second oil inlet
End (12) is connected with the second oil outlet (15), and second balanced valve (3) is configured to: when oil is from first oil inlet end (11)
When entering the first oil outlet (14), second balanced valve (3) makes second oil outlet (15) and the second oil inlet end (12)
It is connected to by the second balanced valve (3).
2. Double Acting Telescopic Hydraulic Cylinder as described in claim 1 balances valve group, it is characterised in that: the two-action multi-stage is hydraulic
It further includes the first check valve (4) that cylinder, which balances valve group, and the oil inlet of first check valve (4) and first oil inlet end (11) are even
Logical, the oil outlet of first check valve (4) is connected to first oil outlet (14).
3. Double Acting Telescopic Hydraulic Cylinder as claimed in claim 2 balances valve group, which is characterized in that first balanced valve (2)
Include:
First balanced valve oil inlet (21) is connected to first oil outlet (13)；
First load port (22) is connected to the oil outlet of first oil outlet (14) and the first check valve (4) simultaneously；
First control port (23) is connected to by oil duct with second oil inlet end (12).
4. Double Acting Telescopic Hydraulic Cylinder as claimed in claim 3 balances valve group, which is characterized in that second balanced valve (3)
Include:
Second balanced valve oil inlet (31) is connected to second oil inlet end (12)；
Second load port (32) is connected to second oil outlet (15)；
Second control port (33) is connected to by oil duct with first oil inlet end (11).
5. Double Acting Telescopic Hydraulic Cylinder as described in claim 1 balances valve group, it is characterised in that: the two-action multi-stage is hydraulic
It further includes pressure measuring tie-in (5) that cylinder, which balances valve group, and the pressure measuring tie-in (5) passes through oil duct and first oil inlet end (11) and second
Oil inlet end (12) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615526.0U CN208831370U (en) | 2018-09-30 | 2018-09-30 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615526.0U CN208831370U (en) | 2018-09-30 | 2018-09-30 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
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| Publication Number | Publication Date |
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| CN208831370U true CN208831370U (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821615526.0U Active CN208831370U (en) | 2018-09-30 | 2018-09-30 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026885A (en) * | 2018-09-30 | 2018-12-18 | 中国船舶重工集团公司第七〇九研究所 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
-
2018
- 2018-09-30 CN CN201821615526.0U patent/CN208831370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026885A (en) * | 2018-09-30 | 2018-12-18 | 中国船舶重工集团公司第七〇九研究所 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
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