CN206368872U - It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression - Google Patents
It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression Download PDFInfo
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- CN206368872U CN206368872U CN201621466542.9U CN201621466542U CN206368872U CN 206368872 U CN206368872 U CN 206368872U CN 201621466542 U CN201621466542 U CN 201621466542U CN 206368872 U CN206368872 U CN 206368872U
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- propelling cylinder
- oil
- cylinder
- valve
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Abstract
A kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression, including at least two groups propelling cylinder groups, every group of propelling cylinder group compresses one group of section of jurisdiction, and A oil circuits are every group of propelling cylinder group fuel feeding with B oil circuits；Every group of propelling cylinder group includes a propelling cylinder and a pressurize valve group, and the described rear end of propelling cylinder is connected with the main hydraulic fluid port of pressurize valve group by hydraulic hose, and another main hydraulic fluid port of pressurize valve group is connected with A oil circuits again；The drain tap of pressurize valve group is connected with drain line Dr, and the control port of pressurize valve group is connected with control oil pipe road X；The rod end of described propelling cylinder is connected by hydraulic hose with B oil circuits, it is characterised in that an electromagnet cut off valve is connected on the hydraulic hose between the rod end and B oil circuits of every group of propelling cylinder.The utility model is ingenious in design, simple in construction, when overcoming one group of propelling cylinder group replacing section of jurisdiction of prior art, the defect of the rod end pressure reduction of other propelling cylinder groups, it is ensured that safety when shield machine thrust oil cylinder works.
Description
Technical field
The utility model be it is a kind of prevent the hydraulic circuit of shield machine thrust oil cylinder decompression, belong to tunnel machine technology
Field, is related to Thrust Hydraulic System for Shield Tunneling Machine；It is specifically a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression.
Background technology
Shield machine tunneling is to withstand section of jurisdiction backward using propelling cylinder to promote shield machine to tunnel forward, is promoting shield
Machine is tunneled forward after a segment distance, and shield machine stops driving, starts assembled new section of jurisdiction.The mode of pipe sheet assembling is usually that part is pushed away
Enter oil cylinder to retract and then place new section of jurisdiction, then this part propelling cylinder, which stretches out, compresses new section of jurisdiction, and then next part promotes oil
Cylinder continues to retract and then place new section of jurisdiction, and this part propelling cylinder, which stretches out, compresses new section of jurisdiction, so repeats, until required section of jurisdiction is spelled
Install untill finishing.To prevent propelling cylinder power output is excessive from causing pipe sheet assembling to deform, in pipe sheet assembling, propelling cylinder needs
With relatively low pressure compaction section of jurisdiction, in order to ensure the retraction speed of propelling cylinder, using elevated pressures retraction oil cylinder.Existing portion
Divide Thrust Hydraulic System for Shield Tunneling Machine, due to by the way of propelling cylinder rod chamber oil circuit is in parallel, in segment assembly, when one
When dividing oil cylinder retraction, all propelling cylinder rod chambers can all be loaded by recoil pressure, and recoil pressure can balance out propulsion oil
The pressure of cylinder rodless cavity, causes propelling cylinder to reduce the thrust of section of jurisdiction.The propelling cylinder of particularly just assembled new section of jurisdiction, by
Low in the thrust of setting, recoil pressure is particularly evident to its neutralization effect, and the thrust of oil cylinder can be significantly reduced, the company of adding
The dilatancy of propelling cylinder sebific duct and the compressibility of hydraulic oil are connect, severe patient even occurs that propelling cylinder piston rod departs from section of jurisdiction
Phenomenon.During practice of construction, therefore reason once caused the construction accident that just assembled complete section of jurisdiction is dropped, and caused weight
Big loss of personal property and severe social influence.
Utility model content
The purpose of this utility model be to provide it is a kind of prevent the hydraulic circuit of shield machine thrust oil cylinder decompression, with overcome when need
When changing the section of jurisdiction that a propelling cylinder is compressed, and the defect of other propelling cylinder decompressions of shield machine.
It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression, including at least two groups propelling cylinder groups, every group of propulsion
Oil cylinder group compresses one group of section of jurisdiction, and A oil circuits are every group of propelling cylinder group fuel feeding with B oil circuits；Every group of propelling cylinder group is pushed away including one
Enter oil cylinder and a pressurize valve group, the described rear end of propelling cylinder is connected with the main hydraulic fluid port of pressurize valve group by hydraulic hose,
Another main hydraulic fluid port of pressurize valve group is connected with A oil circuits again；The drain tap of pressurize valve group is connected with drain line Dr, the control of pressurize valve group
Liquefaction mouthful is connected with control oil pipe road X；The rod end of described propelling cylinder is connected by hydraulic hose with B oil circuits, its feature
It is, an electromagnet cut off valve is connected on the hydraulic hose between the rod end and B oil circuits of every group of propelling cylinder.
When the section of jurisdiction that one group of propelling cylinder group is compressed needs to change, the electromagnet cut off valve of the propelling cylinder group is opened, is closed
The electromagnet cut off valve of other propelling cylinder groups is closed, other propelling cylinder groups is kept the pressure of propelling cylinder group oil cylinder rod end not
Become.
The utility model is ingenious in design, simple in construction, when overcoming one group of propelling cylinder group replacing section of jurisdiction of prior art, its
The defect that the rod end pressure of its propelling cylinder group reduces, it is ensured that safety when shield machine thrust oil cylinder works.
Brief description of the drawings
Fig. 1, the first propelling cylinder of the utility model group, the second propelling cylinder group and the 3rd propelling cylinder group are in shield machine
Position view；
Fig. 2, hydraulic circuit diagram of the present utility model；
Fig. 3, the hydraulic circuit diagram of embodiment of the present utility model one；
Fig. 4, the hydraulic circuit diagram of embodiment of the present utility model two.
Wherein, 1.1 be the first pressurize valve group, and 2.1 be the first electromagnet cut off valve, and 3.1 be the first electromagnet cut off valve；It 1.2 is
Second pressurize valve group, 2.2 be the second electromagnet cut off valve, and 3.2 be the second electromagnet cut off valve；1.3 be the 3rd pressurize valve group, and 2.3 are
3rd electromagnet cut off valve, 3.3 be the 3rd electromagnet cut off valve, and 4.1 be the first hydraulic hose, and 4.2 be the second hydraulic hose, and 4.3 are
3rd hydraulic hose, 4.4 be the 4th hydraulic hose, and 4.5 be the 5th hydraulic hose, and 4.6 be the 6th hydraulic hose；5 be shield machine
Cutterhead, 6 be the shield body of shield machine, and 7 be the section of jurisdiction of shield machine.
Embodiment
It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression, including at least two groups propelling cylinder groups, every group of propulsion
Oil cylinder group compresses one group of section of jurisdiction, and A oil circuits are every group of propelling cylinder group fuel feeding with B oil circuits；Every group of propelling cylinder group is pushed away including one
Enter oil cylinder and a pressurize valve group, the described rear end of propelling cylinder is connected with the main hydraulic fluid port of pressurize valve group by hydraulic hose,
Another main hydraulic fluid port of pressurize valve group is connected with A oil circuits again；The drain tap of pressurize valve group is connected with drain line Dr, the control of pressurize valve group
Liquefaction mouthful is connected with control oil pipe road X；The rod end of described propelling cylinder is connected by hydraulic hose with B oil circuits, its feature
It is, an electromagnet cut off valve is connected on the hydraulic hose between the rod end and B oil circuits of every group of propelling cylinder.
When the section of jurisdiction that one group of propelling cylinder group is compressed needs to change, the electromagnet cut off valve of the propelling cylinder group is opened, is closed
The electromagnet cut off valve of other propelling cylinder groups is closed, other propelling cylinder groups is kept the pressure of propelling cylinder group oil cylinder rod end not
Become.
Technical solution of the present utility model is：It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression,
The hydraulic hose that is connected including the propelling cylinder in shield body and with propelling cylinder, pressurize valve group, it is characterised in that：Also wrap
Include electromagnet cut off valve.Because every propelling cylinder hydraulic circuit of Thrust Hydraulic System for Shield Tunneling Machine that the utility model is applied is identical,
Propelling cylinder hydraulic circuit is each other using connected mode in parallel, so following optionally wherein three propelling cylinder loops are done
Describe in detail.The specific connected mode of hydraulic circuit is：One end hydraulic fluid port of first pressurize valve group 1.1 is connected with pipeline A, the first pressure retaining valve
The group main hydraulic fluid port of 1.1 other ends is connected with the one end of the second hydraulic hose 4.2, the drain tap of the first pressurize valve group 1.1 and drain line Dr
Connection, the control port of the first pressurize valve group 1.1 is connected with control oil pipe road X, and the other end of the second hydraulic hose 4.2 and first is promoted
The rodless cavity of oil cylinder 3.1 is connected, and the rod chamber of the first propelling cylinder 3.1 is connected with the one end of the first hydraulic hose 4.1, the first hydraulic hose
4.1 other ends are connected with the nonreturn valve core oil-out of the first electromagnet cut off valve 2.1, the nonreturn valve core oil-feed of the first electromagnet cut off valve 2.1
Mouth is connected with pipeline B；One end hydraulic fluid port of second pressurize valve group 1.2 is connected with pipeline A, the main hydraulic fluid port of the other end of the second pressurize valve group 1.2
It is connected with the one end of the 4th hydraulic hose 4.4, the drain tap of the second pressurize valve group 1.2 is connected with drain line Dr, the second pressurize valve group
1.2 control ports are connected with control oil pipe road X, and the other end of the 4th hydraulic hose 4.4 and the rodless cavity of the second propelling cylinder 3.2 connect
Connect, the rod chamber of the second propelling cylinder 3.2 is connected with the one end of the 3rd hydraulic hose 4.3, the other end of the 3rd hydraulic hose 4.3 and second
The nonreturn valve core oil-out of electromagnet cut off valve 2.2 is connected, and the nonreturn valve core oil inlet of the second electromagnet cut off valve 2.2 is connected with pipeline B；The
One end hydraulic fluid port of three pressurize valve group 1.3 is connected with pipeline A, the main hydraulic fluid port of the other end of the 3rd pressurize valve group 1.3 and the 6th hydraulic hose 4.6
One end is connected, and the drain tap of the 3rd pressurize valve group 1.3 is connected with drain line Dr, the control port of the 3rd pressurize valve group 1.3 and control
Oil pipe line X connections, the other end of the 6th hydraulic hose 4.6 is connected with the rodless cavity of the 3rd propelling cylinder 3.3, the 3rd propelling cylinder 3.3
Rod chamber is connected with the one end of the 5th hydraulic hose 4.5, and the other end of the 5th hydraulic hose 4.5 and the 3rd electromagnet cut off valve 2.3 are unidirectional
Valve element oil-out is connected, and the nonreturn valve core oil inlet of the 3rd electromagnet cut off valve 2.3 is connected with pipeline B；
The utility model increases on the basis of original Thrust Hydraulic System for Shield Tunneling Machine in the rod chamber loop of propelling cylinder
Electromagnet cut off valve.Electromagnet cut off valve is unidirectional cutoff form, and when electromagnet cut off valve dead electricity is closed, electromagnet cut off valve can only be single
To circulation, hydraulic oil can only flow out from propelling cylinder rod chamber.When electromagnet cut off valve obtains electric-opening, electromagnet cut off valve can be double
To circulation, hydraulic oil can be flowed into and out from propelling cylinder rod chamber.In the rod chamber loop increase electromagnetism cut-off of propelling cylinder
Valve, negative function of the hydraulic oil to other propelling cylinder thrusts, is greatly improved when effectively prevent part propelling cylinder retraction
Stability and security that propelling cylinder is compressed to section of jurisdiction.The utility model, which has, prevents shield machine thrust oil cylinder from being spelled in section of jurisdiction
During dress the characteristics of decompression.The utility model is mainly used in Thrust Hydraulic System for Shield Tunneling Machine.
As shown in figure 3, behind the assembled complete new section of jurisdiction of the second propelling cylinder 3.2, the 3rd propelling cylinder 3.3, being compressed with low pressure P3
Section of jurisdiction, now the second propelling cylinder 3.2, the rodless cavity pressure of the 3rd propelling cylinder 3.3 are P3, and the second propelling cylinder the 3.2, the 3rd is pushed away
Enter the rod chamber pressure of oil cylinder 3.3 for P2, P3>P2, the second propelling cylinder 3.2, the 3rd propelling cylinder 3.3 compress section of jurisdiction.Such as Fig. 4 institutes
Show, when the first propelling cylinder segment assembly, the first propelling cylinder 3.1, which is retracted, starts segment assembly, the second propelling cylinder 3.2,
The low pressure of 3rd propelling cylinder 3.3 compresses new clothes section of jurisdiction.Now, the first pressurize valve group 1.1 is opened, the first electromagnet cut off valve 2.1
Electric-opening, the second pressurize valve group 1.2 is closed, and the dead electricity of the second electromagnet cut off valve 2.2 is closed, and the 3rd pressurize valve group 1.3 is closed, and the 3rd
The dead electricity of electromagnet cut off valve 2.3 is closed.Pressure oil enters from pipeline B, enters the first propelling cylinder by the first electromagnet cut off valve 2.1
3.1 rod chambers promote the piston rod of the first propelling cylinder 3.1 retraction, and the rodless cavity fluid of the first propelling cylinder 3.1 passes through the first pressurize
Valve group 1.1 enters pipeline A.When the piston rod of first propelling cylinder 3.1 is fully retracted, pressure oil reaches setting pressure P1, now the
The rod chamber pressure of one propelling cylinder 3.1 is P1.Because the second pressurize valve group 1.2 is closed, the dead electricity of the second electromagnet cut off valve 2.2 is closed
Close, the 3rd pressurize valve group 1.3 is closed, the dead electricity of the 3rd electromagnet cut off valve 2.3 is closed, pressure oil can not enter the second propelling cylinder
3.2nd, the rod chamber of the 3rd propelling cylinder 3.3, so now the second propelling cylinder 3.2, the rodless cavity pressure of the 3rd propelling cylinder 3.3 are
P3, the second propelling cylinder 3.2, the rod chamber pressure of the 3rd propelling cylinder 3.3 are P2.
It can be seen that, after propelling cylinder rod chamber adds electromagnet cut off valve, shield machine is in segment assembly, part oil cylinder retraction
When, the pressure of pressure oil can not offset the pressure of other propelling cylinder rodless cavities, cause the phenomenon of other propelling cylinder decompressions, from
And security of the shield machine in segment assembly has been effectively ensured.
Claims (2)
1. a kind of prevent the hydraulic circuit of shield machine thrust oil cylinder decompression, including at least two groups propelling cylinder groups, every group of propulsion oil
Cylinder group compresses one group of section of jurisdiction, and A oil circuits are every group of propelling cylinder group fuel feeding with B oil circuits；Every group of propelling cylinder group includes a propulsion
Oil cylinder and a pressurize valve group, the described rear end of propelling cylinder are connected with the main hydraulic fluid port of pressurize valve group by hydraulic hose, are protected
Another main hydraulic fluid port of pressure valve group is connected with A oil circuits again；The drain tap of pressurize valve group is connected with drain line Dr, the control of pressurize valve group
Hydraulic fluid port is connected with control oil pipe road X；The rod end of described propelling cylinder is connected by hydraulic hose with B oil circuits, and its feature exists
In one electromagnet cut off valve of connection on the hydraulic hose between the rod end and B oil circuits of every group of propelling cylinder.
2. a kind of the hydraulic circuit of shield machine thrust oil cylinder decompression is prevented according to claim 1, it is characterised in that when one
When the section of jurisdiction that group propelling cylinder group is compressed needs to change, the electromagnet cut off valve of the propelling cylinder group is opened, other propulsion oil are closed
The electromagnet cut off valve of cylinder group, makes other propelling cylinder groups keep the pressure of propelling cylinder group oil cylinder rod end constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621466542.9U CN206368872U (en) | 2016-12-29 | 2016-12-29 | It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621466542.9U CN206368872U (en) | 2016-12-29 | 2016-12-29 | It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206368872U true CN206368872U (en) | 2017-08-01 |
Family
ID=59390252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621466542.9U Expired - Fee Related CN206368872U (en) | 2016-12-29 | 2016-12-29 | It is a kind of to prevent the hydraulic circuit of shield machine thrust oil cylinder decompression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206368872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869438A (en) * | 2018-09-07 | 2018-11-23 | 中国铁建重工集团有限公司 | Double shield TBM and its featured oil cylinder control hydraulic system |
| CN109083875A (en) * | 2018-09-07 | 2018-12-25 | 中船重型装备有限公司 | A kind of shield machine speedy drivage cylinder control system and its control method |
-
2016
- 2016-12-29 CN CN201621466542.9U patent/CN206368872U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869438A (en) * | 2018-09-07 | 2018-11-23 | 中国铁建重工集团有限公司 | Double shield TBM and its featured oil cylinder control hydraulic system |
| CN109083875A (en) * | 2018-09-07 | 2018-12-25 | 中船重型装备有限公司 | A kind of shield machine speedy drivage cylinder control system and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170801 Termination date: 20211229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |