CN105221500A - The TBM rear support hydraulic system of single double pump pattern switching and pressurize - Google Patents
The TBM rear support hydraulic system of single double pump pattern switching and pressurize Download PDFInfo
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- CN105221500A CN105221500A CN201510687013.5A CN201510687013A CN105221500A CN 105221500 A CN105221500 A CN 105221500A CN 201510687013 A CN201510687013 A CN 201510687013A CN 105221500 A CN105221500 A CN 105221500A
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Abstract
The invention discloses the TBM rear support hydraulic system of a kind of single double pump pattern switching and pressurize.Comprise motor, high-pressure service pump, low pressure pump, five one-way valves, unloading electromagnetic valve, relief valve, filter, three-position four-way electromagnetic directional valve, two throttle valve, two proportional velocity regulating valves, two equilibrium valves, two rear support cylinders, two pressure transducers and fuel tanks.The present invention realizes double pump high flow rate oil supply and single pump small flow fuel feeding two kinds of mode of operations by the switching of unloading electromagnetic valve, low pressure is stretched out fast, high pressure slowly stretches out, high pressure is slowly retracted and low pressure fast retractile in conjunction with proportional velocity regulating valve, TBM rear support cylinder to be realized, increase feed circuit simultaneously, making up equilibrium valve under actual conditions can not the shortcoming of pressurize for a long time, makes the more efficient and safety work of TBM rear support.
Description
Technical field
The present invention relates to a kind of TBM rear support hydraulic system, particularly relate to the TBM rear support hydraulic system of a kind of single double pump pattern switching and pressurize.
Background technique
TBM rear support hydraulic system is one of key subsystem of hard rock heading equipment, when the support of TBM is changed step, bears the task of temporary supporting euqipment, and stretching and retracted for clearance are stretched out in its elemental motion, thus changes step ready for the support of TBM.The shoring of existing TBM rear support hydraulic system stretches out and relies on one-way throttle valve to carry out speed governing in retraction process, speed governing weak effect and stretching out with retraction speed of shoring is slow, after rear support cylinder stretching tunnel bottom, equilibrium valve is difficult to long-time pressurize, thus easily cause TBM main frame afterbody to decline, affect the practice of construction of TBM.
Summary of the invention
In order to overcome existing TBM rear support hydraulic system speed governing weak effect, shoring stretch out the deficiency that slow with retraction speed in equilibrium valve be difficult to long-time pressurize, the object of the present invention is to provide the TBM rear support hydraulic system of a kind of single double pump pattern switching and pressurize, the mode that this system adopts single double pump pattern to switch, make TBM rear support cylinder realize low pressure in conjunction with proportional velocity regulating valve to stretch out fast, high pressure slowly stretches out, high pressure is slowly retracted and low pressure fast retractile, improve the efficiency of whole support process, realize the long-time pressurize of rear support cylinder by increasing feed circuit simultaneously, make TBM safety work.
The technical solution adopted for the present invention to solve the technical problems is:
The present invention includes motor, high-pressure service pump, low pressure pump, the first one-way valve, the second one-way valve, the 3rd one-way valve, the 4th one-way valve, the 5th one-way valve, unloading electromagnetic valve, relief valve, filter, three-position four-way electromagnetic directional valve, first throttle valve, second throttle, the first proportional velocity regulating valve, the second proportional velocity regulating valve, the first equilibrium valve, the second equilibrium valve, left side rear support cylinder, right side rear support cylinder, left pressure sensor, right pressure sensor and fuel tank.Motor is energizes high-pressure pump and low pressure pump work simultaneously, the filler opening connected tank of high-pressure service pump and low pressure pump, the oil outlet of low pressure pump is connected with the forward hydraulic fluid port of the first one-way valve with the 5A filler opening of unloading electromagnetic valve simultaneously, the 5T oil outlet of unloading electromagnetic valve is all connected with fuel tank with 5B control port, the reverse hydraulic fluid port of the first one-way valve connects the forward hydraulic fluid port of the second one-way valve together with the oil outlet of high-pressure service pump, the reverse hydraulic fluid port of the second one-way valve is connected with the filler opening of filter with the filler opening of relief valve simultaneously, the oil outlet of relief valve is connected with fuel tank, the oil outlet of filter respectively with the filler opening of first throttle valve, the filler opening of second throttle is connected with the 10P hydraulic fluid port of three-position four-way electromagnetic directional valve, the 10A hydraulic fluid port of three-position four-way electromagnetic directional valve is connected with the filler opening of the first proportional velocity regulating valve, the oil outlet of the first proportional velocity regulating valve connects the 16A hydraulic fluid port of the first equilibrium valve and the 17A hydraulic fluid port of the second equilibrium valve, the 16C hydraulic fluid port of the first equilibrium valve is connected with the hydraulic fluid port of the rodless cavity of left side rear support cylinder, the 17C hydraulic fluid port of the second equilibrium valve is connected with the hydraulic fluid port of the rodless cavity of right side rear support cylinder, left side rear support cylinder is connected with the 17D hydraulic fluid port of the second equilibrium valve with the 16D hydraulic fluid port of the first equilibrium valve respectively with the hydraulic fluid port of the rod chamber of right side rear support cylinder, the 16B hydraulic fluid port of the first equilibrium valve is connected with the reverse hydraulic fluid port of the second proportional velocity regulating valve with the 17B hydraulic fluid port of the second equilibrium valve simultaneously, the forward hydraulic fluid port of the second proportional velocity regulating valve is connected with the 10B hydraulic fluid port of three-position four-way electromagnetic directional valve, the forward hydraulic fluid port of the 3rd one-way valve is connected with forward hydraulic fluid port with the reverse hydraulic fluid port of the second proportional velocity regulating valve respectively with reverse hydraulic fluid port, the 10T hydraulic fluid port of three-position four-way electromagnetic directional valve is connected with fuel tank, the oil outlet of first throttle valve is connected with the forward hydraulic fluid port of the 4th one-way valve, the reverse hydraulic fluid port of the 4th one-way valve is connected with the hydraulic fluid port of the rodless cavity of left side rear support cylinder, the oil outlet of second throttle is connected with the forward hydraulic fluid port of the 5th one-way valve, the reverse hydraulic fluid port of the 5th one-way valve is connected with the hydraulic fluid port of the rodless cavity of right side rear support cylinder, and left pressure sensor and right pressure sensor are connected respectively to the hydraulic fluid port of rodless cavity of left side rear support cylinder and the hydraulic fluid port of the rodless cavity of right side rear support cylinder.
By judging whether left pressure sensor and right pressure sensor reach setting value, then unloading electromagnetic valve signal is given, make unloading electromagnetic valve be in normal pressure limiting or unloading condition, realize the switching of high-pressure service pump and low pressure pump fuel feeding pattern and the independent fuel feeding pattern of high-pressure service pump simultaneously.
High-pressure service pump, the second one-way valve, filter, first throttle valve, second throttle, the 4th one-way valve, the 5th one-way valve, left side rear support cylinder and the feed circuit of right side rear support cylinder composition, by regulating the opening of first throttle valve and second throttle to carry out repairing, keep the constant pressure of the rodless cavity of left side rear support cylinder and right side rear support cylinder.
The beneficial effect that the present invention has is:
TBM rear support hydraulic system of the present invention realizes double pump high flow rate oil supply and single pump small flow fuel feeding two kinds of mode of operations by the switching of unloading electromagnetic valve, low pressure is stretched out fast, high pressure slowly stretches out, high pressure is slowly retracted and low pressure fast retractile in conjunction with proportional velocity regulating valve, TBM rear support cylinder to be realized, increase feed circuit simultaneously, making up equilibrium valve under actual conditions can not the shortcoming of pressurize for a long time, makes the more efficient and safety work of TBM rear support.
Accompanying drawing explanation
Fig. 1 is hydraulic system principle figure of the present invention.
In figure: 1, motor, 2, high-pressure service pump, 3, fuel tank, 4, low pressure pump, 5, unloading electromagnetic valve, 6, first one-way valve, 7, second one-way valve, 8, relief valve, 9, filter, 10, three-position four-way electromagnetic directional valve, 11, first throttle valve, 12, second throttle, 13, first series flow control valve, 14, second series flow control valve, 15, 3rd one-way valve, 16, first equilibrium valve, 17, second equilibrium valve, 18, 4th one-way valve, 19, left pressure sensor, 20, left side rear support cylinder, 21, right side rear support cylinder, 22, right pressure sensor, 23, 5th one-way valve.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in Figure 1, the present invention includes motor 1, high-pressure service pump 2, low pressure pump 4, first one-way valve 6, second one-way valve 7, the 3rd one-way valve 15, the 4th one-way valve 18, the 5th one-way valve 23, unloading electromagnetic valve 5, relief valve 8, filter 9, three-position four-way electromagnetic directional valve 10, first throttle valve 11, second throttle 12, first proportional velocity regulating valve 13, second proportional velocity regulating valve 14, first equilibrium valve 16, second equilibrium valve 17, left side rear support cylinder 20, right side rear support cylinder 21, left pressure sensor 19, right pressure sensor 22 and fuel tank 3.Motor 1 simultaneously energizes high-pressure pump 2 and low pressure pump 4 works, high-pressure service pump 2 and low pressure pump 4 are simultaneously from fuel tank 3 oil suction, the oil outlet of low pressure pump 3 is connected with the forward hydraulic fluid port of the first one-way valve 6 with the 5A filler opening of unloading electromagnetic valve 5 simultaneously, the 5T oil outlet of unloading electromagnetic valve 5 is all connected with fuel tank 3 with 5B control port, the reverse hydraulic fluid port of the first one-way valve 6 connects the forward hydraulic fluid port of the second one-way valve 7 together with the oil outlet of high-pressure service pump 2, the reverse hydraulic fluid port of the second one-way valve 7 is connected with the filler opening of filter 9 with the filler opening of relief valve 8 simultaneously, the oil outlet of relief valve 8 is connected with fuel tank 3, the oil outlet of filter 9 respectively with the filler opening of first throttle valve 11, the filler opening of second throttle 12 is connected with the 10P hydraulic fluid port of three-position four-way electromagnetic directional valve 10, the 10A hydraulic fluid port of three-position four-way electromagnetic directional valve 10 is connected with the filler opening of the first proportional velocity regulating valve 13, the oil outlet of the first proportional velocity regulating valve 13 connects the 16A hydraulic fluid port of the first equilibrium valve 16 and the 17A hydraulic fluid port of the second equilibrium valve 17, the 16C hydraulic fluid port of the first equilibrium valve 16 is connected with the hydraulic fluid port of the rodless cavity of left side rear support cylinder 20, the 17C hydraulic fluid port of the second equilibrium valve 17 is connected with the hydraulic fluid port of the rodless cavity of right side rear support cylinder 21, left side rear support cylinder 20 is connected with the 17D hydraulic fluid port of the second equilibrium valve 17 with the 16D hydraulic fluid port of the first equilibrium valve 16 respectively with the hydraulic fluid port of the rod chamber of right side rear support cylinder 21, the 16B hydraulic fluid port of the first equilibrium valve 16 is connected with the reverse hydraulic fluid port of the second proportional velocity regulating valve 14 with the 17B hydraulic fluid port of the second equilibrium valve 17 simultaneously, the forward hydraulic fluid port of the second proportional velocity regulating valve 14 is connected with the 10B hydraulic fluid port of three-position four-way electromagnetic directional valve 10, the forward hydraulic fluid port of the 3rd one-way valve 15 is connected with forward hydraulic fluid port with the reverse hydraulic fluid port of the second proportional velocity regulating valve 14 respectively with reverse hydraulic fluid port, the 10T hydraulic fluid port of three-position four-way electromagnetic directional valve 10 is connected with fuel tank 3, the oil outlet of first throttle valve 11 is connected with the forward hydraulic fluid port of the 4th one-way valve 18, the reverse hydraulic fluid port of the 4th one-way valve 18 is connected with the hydraulic fluid port of the rodless cavity of left side rear support cylinder 20, the oil outlet of second throttle 12 is connected with the forward hydraulic fluid port of the 5th one-way valve 23, the reverse hydraulic fluid port of the 5th one-way valve 23 is connected with the hydraulic fluid port of the rodless cavity of right side rear support cylinder 21, and left pressure sensor 19 and right pressure sensor 22 are connected respectively to the hydraulic fluid port of rodless cavity of left side rear support cylinder 20 and the hydraulic fluid port of the rodless cavity of right side rear support cylinder 21.
By judging whether left pressure sensor 19 and right pressure sensor 22 reach setting value, then unloading electromagnetic valve 5 signal is given, make unloading electromagnetic valve 5 be in normal pressure limiting or unloading condition, realize the switching of high-pressure service pump 2 and low pressure pump 4 fuel feeding pattern and high-pressure service pump 2 fuel feeding pattern separately simultaneously.
High-pressure service pump 2, second one-way valve 7, filter 9, first throttle valve 11, second throttle 12, the 4th one-way valve 18, the 5th one-way valve 23, left side rear support cylinder 20 and right side rear support cylinder 21 form feed circuit, by regulating the opening of first throttle valve 11 and second throttle 12 to carry out repairing, keep the constant pressure of the rodless cavity of left side rear support cylinder 20 and right side rear support cylinder 21.
working principle of the present invention is as follows:
Left side rear support cylinder and right side rear support cylinder work (being hereafter generically and collectively referred to as rear support cylinder) simultaneously.The present invention can be divided into five working procedure: rear support cylinder stretches out fast, and rear support cylinder slowly stretches out, repairing, and rear support cylinder is slowly retracted and rear support cylinder fast retractile.
The working principle that rear support cylinder stretches out fast and slowly stretches out:
Unloading electromagnetic valve 5 dead electricity, the right position of three-position four-way electromagnetic directional valve 10 obtains electric, first throttle valve 11 and second throttle 12 are all in closed condition, motor 1 is energizes high-pressure pump 2 and low pressure pump 4 fuel feeding outward simultaneously, the forward hydraulic fluid port of the second one-way valve 7 is flowed to together with the fluid that the fluid that wherein low pressure pump 4 flows out flows out through the first one-way valve 6 and high-pressure service pump 2, then after filter 9, the 10P hydraulic fluid port of three-position four-way electromagnetic directional valve 10 is flowed to from the reverse hydraulic fluid port of the second one-way valve 7, the fluid flowed out from the 10A hydraulic fluid port of three-position four-way electromagnetic directional valve 10 flows to the forward hydraulic fluid port of the first proportional velocity regulating valve 13, and flow to the 16A mouth of the first equilibrium valve 16 and the 17A mouth of the second equilibrium valve 17 respectively from the reverse hydraulic fluid port of the first proportional velocity regulating valve 13, then the hydraulic fluid port of the rodless cavity of left side rear support cylinder 20 and right side rear support cylinder 21 is flowed to respectively from the 16C mouth of the first equilibrium valve 16 and the 17C mouth of the second equilibrium valve 17, the fluid flowed out from the hydraulic fluid port of the rod chamber of left side rear support cylinder 20 and right side rear support cylinder 21 flows to the 16D mouth of the first equilibrium valve 16 and the 17D mouth of the second equilibrium valve 17 respectively, and flow to the forward hydraulic fluid port of the 3rd one-way valve 15 together with the 17B mouth of the second equilibrium valve 17 from the 16B mouth of the first equilibrium valve 16, then fluid flows to the 10B hydraulic fluid port of three-position four-way electromagnetic directional valve 10 from the reverse hydraulic fluid port of the 3rd one-way valve 15, finally flow back to fuel tank 3 from the 10T hydraulic fluid port of three-position four-way electromagnetic directional valve 10, what form rear support cylinder stretches out loop fast, when left pressure sensor 19 and right pressure sensor 22 rise to setup pressure value, unloading electromagnetic valve 5 obtains electric, directly fuel tank 3 is flowed back to by unloading electromagnetic valve 5 from low pressure pump 4 fluid out, fuel feeding and from high-pressure service pump 2 flow out fluid still according to stretching out loop fast, rear support cylinder is stretched out, loop total discharge reduces, rear support cylinder stretches out speed to be reduced, if needed, rear support cylinder can be reduced further by the opening of control first series flow control valve 13 and stretch out speed, realize rear support cylinder and slowly stretch out.
Feed circuit working principle:
After rear support cylinder has slowly stretched out, and then three position four-way directional control valve 10 is made to be in meta, the first equilibrium valve 16 and the second equilibrium valve 17 is made all to be in closed condition, slowly open first throttle valve 11 and second throttle 12 simultaneously, the fluid flowed out from the oil outlet of filter 9 flows to the forward hydraulic fluid port of the 4th one-way valve 18 and the 5th one-way valve 23 respectively through the throttling action of first throttle valve 11 and second throttle 12, and the rodless cavity of left side rear support cylinder 20 and right side rear support cylinder 21 is flowed to from the reverse hydraulic fluid port of the 4th one-way valve 18 and the 5th one-way valve 23, realize feed circuit, the aperture of first throttle valve 11 and second throttle 12 can regulate according to the change of left pressure sensor 19 and right pressure sensor 22.
Rear support cylinder is slowly retracted and the working principle of rear support cylinder fast retractile:
Unloading electromagnetic valve 5 dead electricity, the right position of three-position four-way electromagnetic directional valve 10 obtains electric, unloading electromagnetic valve 5 dead electricity, regulate the first proportional velocity regulating valve 13 to closed condition, the left position of three-position four-way electromagnetic directional valve 10 obtains electric, first throttle valve 11 and second throttle 12 are all in closed condition, again proportional velocity regulating valve 13 is opened gradually, the forward hydraulic fluid port of the second one-way valve 7 is flowed to from the fluid of high-pressure service pump 3 outflow, then after the reverse hydraulic fluid port of the second one-way valve 7 after filtration device 9, flow to the 10P hydraulic fluid port of three-position four-way electromagnetic directional valve 10, the fluid flowed out from the 10B hydraulic fluid port of three-position four-way electromagnetic directional valve 10 flows to the forward hydraulic fluid port of the second proportional velocity regulating valve 14, and flow to the 16B mouth of the first equilibrium valve 16 and the 17B mouth of the second equilibrium valve 17 respectively from the reverse hydraulic fluid port of the second proportional velocity regulating valve 14, then the hydraulic fluid port of the rod chamber of left side rear support cylinder 20 and right side rear support cylinder 21 is flowed to respectively from the 16D mouth of the first equilibrium valve 16 and the 17D mouth of the second equilibrium valve 17, the fluid flowed out from the hydraulic fluid port of the rodless cavity of left side rear support cylinder 20 and right side rear support cylinder 21 flows to the 16C mouth of the first equilibrium valve 16 and the 17C mouth of the second equilibrium valve 17 respectively, and flow to the reverse hydraulic fluid port of the first proportional velocity regulating valve 13 together with the 17A mouth of the second equilibrium valve 17 from the 16A mouth of the first equilibrium valve 16, then fluid flows to the 10A hydraulic fluid port of three-position four-way electromagnetic directional valve 10 from the reverse hydraulic fluid port of the first proportional velocity regulating valve 13, finally flow back to fuel tank 3 from the 10T hydraulic fluid port of three-position four-way electromagnetic directional valve 10, the loop of retraction at a slow speed of composition rear support cylinder, if needed, the second proportional velocity regulating valve 14 can be regulated to reduce rear support cylinder contraction speed further, after left pressure sensor 19 and right pressure sensor 22 drop to setup pressure value, unloading electromagnetic valve 5 obtains electric, the fluid flowed out with high-pressure service pump 2 after the first one-way valve 6 from the fluid of low pressure pump 4 outflow converges, total discharge increases, then according to the rod chamber fuel feeding of the loop of retraction at a slow speed rear support cylinder 20 and the right side rear support cylinder 21 to the left of shoring, the fast retractile of rear support cylinder is realized.
Claims (3)
1. the TBM rear support hydraulic system of a single double pump pattern switching and pressurize, it is characterized in that: comprise motor (1), high-pressure service pump (2), low pressure pump (4), first one-way valve (6), second one-way valve (7), 3rd one-way valve (14), 4th one-way valve (17), 5th one-way valve (22), unloading electromagnetic valve (5), relief valve (8), filter (9), three-position four-way electromagnetic directional valve (10), first throttle valve (11), second throttle (12), first proportional velocity regulating valve (13), second proportional velocity regulating valve (13), first equilibrium valve (15), second equilibrium valve (16), left side rear support cylinder (19), right side rear support cylinder (20), left pressure sensor (18), right pressure sensor (21) and fuel tank (3), motor (1) is energizes high-pressure pump (2) and low pressure pump (4) work simultaneously, the filler opening connected tank (3) of high-pressure service pump (2) and low pressure pump (4), the oil outlet of low pressure pump (4) is connected with the forward hydraulic fluid port of the first one-way valve (6) with the 5A filler opening of unloading electromagnetic valve (5) simultaneously, the 5T oil outlet of unloading electromagnetic valve (5) is all connected with fuel tank (3) with 5B control port, the reverse hydraulic fluid port of the first one-way valve (6) connects the forward hydraulic fluid port of the second one-way valve (7) together with the oil outlet of high-pressure service pump (2), the reverse hydraulic fluid port of the second one-way valve (7) is connected with the filler opening of filter (9) with the filler opening of relief valve (8) simultaneously, the oil outlet of relief valve (8) is connected with fuel tank (3), the oil outlet of filter (9) respectively with the filler opening of first throttle valve (11), the filler opening of second throttle (12) is connected with the 10P hydraulic fluid port of three-position four-way electromagnetic directional valve (10), the 10A hydraulic fluid port of three-position four-way electromagnetic directional valve (10) is connected with the filler opening of the first proportional velocity regulating valve (13), the oil outlet of the first proportional velocity regulating valve (13) connects the 16A hydraulic fluid port of the first equilibrium valve (16) and the 17A hydraulic fluid port of the second equilibrium valve (17), the 16C hydraulic fluid port of the first equilibrium valve (16) is connected with the hydraulic fluid port of the rodless cavity in left side rear support cylinder (20), the 17C hydraulic fluid port of the second equilibrium valve (17) is connected with the hydraulic fluid port of the rodless cavity on right side rear support cylinder (21), left side rear support cylinder (20) is connected with the 17D hydraulic fluid port of the second equilibrium valve (17) with the 16D hydraulic fluid port of the first equilibrium valve (16) respectively with the hydraulic fluid port of the rod chamber on right side rear support cylinder (21), the 16B hydraulic fluid port of the first equilibrium valve (16) is connected with the reverse hydraulic fluid port of the second proportional velocity regulating valve (14) with the 17B hydraulic fluid port of the second equilibrium valve (17) simultaneously, the forward hydraulic fluid port of the second proportional velocity regulating valve (14) is connected with the 10B hydraulic fluid port of three-position four-way electromagnetic directional valve (10), the forward hydraulic fluid port of the 3rd one-way valve (15) is connected with forward hydraulic fluid port with the reverse hydraulic fluid port of the second proportional velocity regulating valve (14) respectively with reverse hydraulic fluid port, the 10T hydraulic fluid port of three-position four-way electromagnetic directional valve (10) is connected with fuel tank (3), the oil outlet of first throttle valve (11) is connected with the forward hydraulic fluid port of the 4th one-way valve (18), the reverse hydraulic fluid port of the 4th one-way valve (18) is connected with the hydraulic fluid port of the rodless cavity in left side rear support cylinder (20), the oil outlet of second throttle (12) is connected with the forward hydraulic fluid port of the 5th one-way valve (23), the reverse hydraulic fluid port of the 5th one-way valve (23) is connected with the hydraulic fluid port of the rodless cavity on right side rear support cylinder (21), left pressure sensor (19) and right pressure sensor (22) are connected respectively to the hydraulic fluid port of rodless cavity in left side rear support cylinder (20) and the hydraulic fluid port of the rodless cavity on right side rear support cylinder (21).
2. the TBM rear support hydraulic system of a kind of single double pump pattern switching according to claim 1 and pressurize, it is characterized in that: by judging whether left pressure sensor (19) and right pressure sensor (22) reach setting value, then unloading electromagnetic valve (5) signal is given, make unloading electromagnetic valve (5) be in normal pressure limiting or unloading condition, realize the switching of high-pressure service pump (2) and low pressure pump (4) fuel feeding pattern and high-pressure service pump (2) fuel feeding pattern separately simultaneously.
3. the TBM rear support hydraulic system of a kind of single double pump pattern switching according to claim 1 and pressurize, it is characterized in that: high-pressure service pump (2), second one-way valve (7), filter (9), first throttle valve (11), second throttle (12), 4th one-way valve (18), 5th one-way valve (23), left side rear support cylinder (20) and right side rear support cylinder (21) composition feed circuit, repairing is carried out by regulating the opening of first throttle valve (11) and second throttle (12), keep the constant pressure of the rodless cavity on left side rear support cylinder (20) and right side rear support cylinder (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510687013.5A CN105221500B (en) | 2015-10-22 | 2015-10-22 | Tunnel boring machine (TBM) rear support hydraulic system having single and double pump mode switching and pressure maintaining functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510687013.5A CN105221500B (en) | 2015-10-22 | 2015-10-22 | Tunnel boring machine (TBM) rear support hydraulic system having single and double pump mode switching and pressure maintaining functions |
Publications (2)
| Publication Number | Publication Date |
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| CN105221500A true CN105221500A (en) | 2016-01-06 |
| CN105221500B CN105221500B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510687013.5A Active CN105221500B (en) | 2015-10-22 | 2015-10-22 | Tunnel boring machine (TBM) rear support hydraulic system having single and double pump mode switching and pressure maintaining functions |
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| CN (1) | CN105221500B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106762884A (en) * | 2017-03-13 | 2017-05-31 | 浙江大学 | Based on the vertical tuning hydraulic systems of pressure compensated TBM |
| CN107165881A (en) * | 2017-07-21 | 2017-09-15 | 徐州徐工液压件有限公司 | A kind of function integrated-type large-tonnage tower crane jacking cylinder and control oil circuit |
| CN108488119A (en) * | 2018-03-30 | 2018-09-04 | 东莞市环宇文化科技有限公司 | A kind of automatic erector with hydraulic control system |
| 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 |
| CN113404732A (en) * | 2021-06-24 | 2021-09-17 | 三一汽车起重机械有限公司 | Lifting hydraulic system and working machine |
| CN114321043A (en) * | 2021-12-30 | 2022-04-12 | 江苏徐工工程机械研究院有限公司 | Hydraulic control system, control method, telescopic boom control system and working vehicle |
| CN115750889A (en) * | 2022-11-14 | 2023-03-07 | 大连船用阀门有限公司 | Indirect valve position indicator |
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| CN104944326A (en) * | 2014-10-14 | 2015-09-30 | 江苏大峘集团有限公司 | Hydraulic roll ascending system for grinding rolls of vertical mills |
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| JP2005133537A (en) * | 2003-10-06 | 2005-05-26 | Komatsu Ltd | Hydraulic control device for construction machinery |
| CN203655795U (en) * | 2013-12-24 | 2014-06-18 | 浙江大学 | TBM thrust hydraulic system with adequate pressure flow in overall process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762884A (en) * | 2017-03-13 | 2017-05-31 | 浙江大学 | Based on the vertical tuning hydraulic systems of pressure compensated TBM |
| CN107165881A (en) * | 2017-07-21 | 2017-09-15 | 徐州徐工液压件有限公司 | A kind of function integrated-type large-tonnage tower crane jacking cylinder and control oil circuit |
| CN107165881B (en) * | 2017-07-21 | 2019-03-15 | 徐州徐工液压件有限公司 | A kind of function integrated-type large-tonnage tower crane jacking cylinder and control oil circuit |
| CN108488119A (en) * | 2018-03-30 | 2018-09-04 | 东莞市环宇文化科技有限公司 | A kind of automatic erector with hydraulic control system |
| 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 |
| CN113404732A (en) * | 2021-06-24 | 2021-09-17 | 三一汽车起重机械有限公司 | Lifting hydraulic system and working machine |
| CN114321043A (en) * | 2021-12-30 | 2022-04-12 | 江苏徐工工程机械研究院有限公司 | Hydraulic control system, control method, telescopic boom control system and working vehicle |
| CN114321043B (en) * | 2021-12-30 | 2024-02-02 | 江苏徐工工程机械研究院有限公司 | Hydraulic control system and control method, telescopic boom control system and working vehicle |
| CN115750889A (en) * | 2022-11-14 | 2023-03-07 | 大连船用阀门有限公司 | Indirect valve position indicator |
| CN115750889B (en) * | 2022-11-14 | 2023-09-15 | 大连船用阀门有限公司 | Indirect valve position indicator |
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