CN106438524A - Jacking cylinder control hydraulic system - Google Patents
Jacking cylinder control hydraulic system Download PDFInfo
- Publication number
- CN106438524A CN106438524A CN201610675810.6A CN201610675810A CN106438524A CN 106438524 A CN106438524 A CN 106438524A CN 201610675810 A CN201610675810 A CN 201610675810A CN 106438524 A CN106438524 A CN 106438524A
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- CN
- China
- Prior art keywords
- plug
- unit
- hydraulic fluid
- fluid port
- valve
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
Abstract
The invention relates to a jacking cylinder control hydraulic system. The hydraulic system comprises a power control valve block, a jacking cylinder control valve block, a foundation device and a jacking cylinder; the foundation device, the power control valve block, the jacking cylinder control valve block and the jacking cylinder are serially connected in sequence; a pressure gauge is arranged in the connecting place between the jacking cylinder and a y oil port of an insertion piece g for continuously monitoring the port pressure of the whole jacking cylinder to control the pressure stability of the jacking cylinder; an air filter is arranged on an oil tank of the foundation device for reducing the probability of feeding dust or impurities in air into the oil tank to prevent the conditions of pipe blockage and unstable pressure caused by a lot of dust entering the oil tank; and through simple connection between control valves and pipes, the pressure control of the jacking cylinder is realized, the uniform pressure distribution can be continuously and stably provided, and the pressure testing data is more precise.
Description
Technical field
The present invention relates to hydraulic control system, particularly relate to one and take blame for others control hydraulic system.
Background technology
In pressure testing machine, to the control taken blame for others it is generally required to accurately control the stroke of cylinder of taking blame for others thus realize to pressure
The control of power, general needs oil circuit control complicated when to the control taken blame for others, the backhaul taken blame for others and descending between electromagnetism control
Divergence processed causes the backhaul of oil cylinder, descending and pressurize effect unstable, and the pressure test causing is unstable, causes pressure to be surveyed
Examination effect is undesirable, and data are inaccurate.
Content of the invention
The technical problem to be solved in the present invention is to provide one and takes blame for others control hydraulic system, can solve the problem that oil circuit control of taking blame for others
Up, backhaul and pressurize is unstable and the build-up of pressure test inaccurate problem of data.
For solving above-mentioned technical problem, the technical scheme is that：One is taken blame for others control hydraulic system, this hydraulic system
Including power control valve block, control valve of taking blame for others block, base apparatus and take blame for others；Its innovative point is：Described base apparatus, power control
Valve block processed, control valve of taking blame for others block and taking blame for others is sequentially connected in series；
Described base apparatus includes plunger displacement pump, motor and fuel tank；Plunger displacement pump be connected with motor and have two right, each plunger displacement pump
One end be all connected in fuel tank by oil pipe, the plunger displacement pump other end is connected with one end of power control valve block；
Oil circuit that described power control valve block is controlled by two plunger displacement pumps connecting forms, including plug-in unit a, the three of plug-in unit b, 2Y1 control
Position four-way solenoid valve, the two-position four-way solenoid valve of 2Y2 control, non-return valve, overflow valve；The hydraulic fluid port x of plug-in unit a and one of them post
The oil pipe of plug pump control is connected and the controlling brancher as oil pipe, and the hydraulic fluid port y of plug-in unit a and a little fuel tank are connected, the oil of plug-in unit a
Mouth z is connected with the hydraulic fluid port P of three position four-way electromagnetic valve, and the hydraulic fluid port B of three position four-way electromagnetic valve is in series with overflow valve a and overflow valve b
Being connected with little fuel tank, the hydraulic fluid port O of three position four-way electromagnetic valve is also connected with little fuel tank；Two-position four-way solenoid valve is arranged on another post
It on the oil pipe of plug pump control and the branch road as oil pipe, between two-position four-way solenoid valve and oil circuit, is connected with a plug-in unit b, two
On the oil pipe that four way solenoid valve is connected with plug-in unit b and be connected with an overflow valve c；Non-return valve is separately mounted on the main road of oil pipe；
Described control valve block of taking blame for others is connected on power control valve block, including the 3-position 4-way intermediary press formula electromagnetism of 4Y2 control
Valve, 4Y3 control bi-bit bi-pass Solenoid ball valve；The A hydraulic fluid port of the 3-position 4-way intermediary press formula magnetic valve of described 4Y2 control is by oil
Pipe is connected in control plug-in unit d pilot operated valve device, and the P hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve is connected on input oil circuit；Three
The T hydraulic fluid port of position four-way intermediary press formula magnetic valve is connected with fuel tank；The B hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve and plug-in unit
C is connected and controls plug-in unit c；
The input oil circuit end of described control valve block of taking blame for others is parallel with the x hydraulic fluid port of plug-in unit c and the x hydraulic fluid port of plug-in unit d respectively；Plug-in unit c
The y hydraulic fluid port of y hydraulic fluid port and plug-in unit d be connected to the x hydraulic fluid port of plug-in unit e and the x hydraulic fluid port of plug-in unit f respectively by oil pipe；Described plug-in unit c's
Z hydraulic fluid port is connected to the upper port taken blame for others and the lower port taken blame for others by oil pipe respectively with the z hydraulic fluid port of plug-in unit d；Z oil at plug-in unit d
Mouth is also in series with plug-in unit g on the lower port connected pipes taken blame for others, and plug-in unit g is by the bi-bit bi-pass electromagnetic ball of 4Y3 magnet control
Valve controls, and the T hydraulic fluid port of bi-bit bi-pass Solenoid ball valve is connected with plug-in unit g and controls plug-in unit g, the y hydraulic fluid port of plug-in unit g and the x hydraulic fluid port of plug-in unit g
It is connected on the z hydraulic fluid port of lower port and the plug-in unit d taking blame for others；The y hydraulic fluid port of described plug-in unit e is connected with the y hydraulic fluid port of plug-in unit f, inserts
The A hydraulic fluid port of z hydraulic fluid port one tunnel of part e and 3-position 4-way intermediary press formula magnetic valve, and centre is in series with overflow valve n, the z of plug-in unit e
Another road of hydraulic fluid port is connected with the x hydraulic fluid port of plug-in unit e and centre is in series with non-return valve；In the z hydraulic fluid port of described plug-in unit f and 3-position 4-way
Between adding pressure type magnetic valve B hydraulic fluid port merge be connected on fuel tank, the B hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve and fuel tank phase
It is in series with non-return valve and overflow valve m on pipeline even；Be parallel with between overflow valve m and non-return valve one be connected with fuel tank overflow
Stream valve p.
Further, the described y hydraulic fluid port connecting place taken blame for others with plug-in unit g is provided with Pressure gauge.
Further, the fuel tank of described base apparatus is provided with air filter.
It is an advantage of the current invention that：1）The y hydraulic fluid port connecting place with plug-in unit g of taking blame for others is provided with Pressure gauge, it is simple to whole top
The port pressure of cylinder carries out lasting pressure monitoring, the pressure stability that control is taken blame for others.
2）It is provided with air filter on the fuel tank of base apparatus, enter into oil for reducing dust in air or foreign material
Probability in case, it is to avoid enter substantial amounts of dust in oil pipe and cause the blocking of pipeline and the situation that build-up of pressure is unstable.
3) being connected by simple control valve and pipeline, it is achieved to the Stress control taken blame for others, can continue is stable
There is provided uniform pressure distribution so that pressure testing data is more accurate.
Brief description
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is control hydraulic scheme of taking blame for others.
Fig. 2 is the power control valve block figure taken blame for others and control hydraulic system.
Fig. 3 is the control valve block figure of taking blame for others taken blame for others and control hydraulic system.
Detailed description of the invention
The following examples can make professional and technical personnel that the present invention is more fully understood, but not therefore by this
It bright is limited among described scope of embodiments.
One is taken blame for others control hydraulic system as shown in Figure 1 to Figure 3, and this hydraulic system includes that the 1st, power control valve block takes blame for others control
Valve block processed 2nd, base apparatus 3 and take blame for others 4；The 1st, described base apparatus the 3rd, power control valve block takes blame for others control valve block 2 and take blame for others 4 successively
Series connection.
Base apparatus 3 includes plunger displacement pump the 31st, motor 32 and fuel tank 33；Plunger displacement pump 31 be connected with motor 32 and have two right,
One end of each plunger displacement pump 31 is all connected in fuel tank 33 by oil pipe, plunger displacement pump 31 other end and power control valve block 1
One end is connected.
Oil circuit that power control valve block 1 is controlled by two plunger displacement pumps 31 connecting forms, including plug-in unit 5a, plug-in unit 5b, 2Y1 control
Three position four-way electromagnetic valve the 11st, 2Y2 control two-position four-way solenoid valve the 12nd, non-return valve the 13rd, overflow valve 6；The hydraulic fluid port x of plug-in unit 5a
It is connected and the controlling brancher as oil pipe with the oil pipe of one of them plunger displacement pump 31 control, the hydraulic fluid port y of plug-in unit 5a and a little oil
Case is connected, and the hydraulic fluid port z of plug-in unit 5a is connected with the hydraulic fluid port P of three position four-way electromagnetic valve 11, and the hydraulic fluid port B of three position four-way electromagnetic valve 11 goes here and there
Being associated with overflow valve 6a to be connected with little fuel tank with overflow valve 6b, the hydraulic fluid port O of three position four-way electromagnetic valve 11 is also connected with little fuel tank；Two
Four way solenoid valve 12 is arranged on the oil pipe of another plunger displacement pump 31 control and the branch road as oil pipe, two-position four-way solenoid valve
It is connected with a plug-in unit 5b, on the oil pipe that two-position four-way solenoid valve 12 is connected with plug-in unit b and be connected with an overflow valve between 12 and oil circuit
6c；Non-return valve 13 is separately mounted on the main road of oil pipe.
Control valve of taking blame for others block 2 is connected on power control valve block 1, including the 3-position 4-way intermediary press formula electricity of 4Y2 control
Magnet valve the 21st, 4Y3 controls bi-bit bi-pass Solenoid ball valve 22；The A oil of the 3-position 4-way intermediary press formula magnetic valve 21 of described 4Y2 control
Mouth is connected in control plug-in unit 5d pilot operated valve device 7 by oil pipe, and the P hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve 21 is connected to defeated
Enter on oil circuit；The T hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve 21 is connected with fuel tank；3-position 4-way intermediary press formula magnetic valve
The B hydraulic fluid port of 21 is connected with plug-in unit 5c and controls plug-in unit 5c.
The input oil circuit end of control valve of taking blame for others block 2 is parallel with the x hydraulic fluid port of plug-in unit 5c and the x hydraulic fluid port of plug-in unit 5d respectively；Insert
The y hydraulic fluid port of part 5c and the y hydraulic fluid port of plug-in unit 5d are connected to the x hydraulic fluid port of plug-in unit 5e and the x hydraulic fluid port of plug-in unit 5f respectively by oil pipe；Described
The z hydraulic fluid port of plug-in unit 5c and the z hydraulic fluid port of plug-in unit 5d respectively by oil pipe be connected to take blame for others 4 upper port with take blame for others 4 lower port；?
The z hydraulic fluid port of plug-in unit 5d with take blame for others 4 lower port connected pipes on be also in series with plug-in unit 5g, plug-in unit 5g is by 4Y3 magnet control
Bi-bit bi-pass Solenoid ball valve 22 controls, and the T hydraulic fluid port of bi-bit bi-pass Solenoid ball valve 22 is connected with plug-in unit 5g and controls plug-in unit 5g, plug-in unit 5g
The x hydraulic fluid port of y hydraulic fluid port and plug-in unit 5g be connected to take blame for others on the lower port of 4 and the z hydraulic fluid port of plug-in unit 5d；The y of described plug-in unit 5e
Hydraulic fluid port is connected with the y hydraulic fluid port of plug-in unit 5f, the A hydraulic fluid port of z hydraulic fluid port one tunnel of plug-in unit 5e and 3-position 4-way intermediary press formula magnetic valve 21,
And centre is in series with overflow valve 6n, another road of z hydraulic fluid port of plug-in unit 5e is connected with the x hydraulic fluid port of plug-in unit 5e and centre is in series with single-direction balls
Valve 13；The z hydraulic fluid port of described plug-in unit 5f merges with the B hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve 21 and is connected on fuel tank, and three
It is in series with non-return valve 13 and overflow valve 6m on the pipeline that the B hydraulic fluid port of position four-way intermediary press formula magnetic valve 31 is connected with fuel tank；
It is parallel with an overflow valve 6p being connected with fuel tank between overflow valve 6m with non-return valve 13.
Take blame for others and 4 the y hydraulic fluid port connecting place of plug-in unit 5g be provided with Pressure gauge 41, it is simple to entirely take blame for others 4 port pressure enter
The lasting pressure monitoring of row, control take blame for others 4 pressure stability.
It is provided with air filter 34 on the fuel tank 33 of base apparatus 3, be used for reducing the dust in air or foreign material entrance
Probability in fuel tank, it is to avoid enter substantial amounts of dust in oil pipe and cause the blocking of pipeline and the situation that build-up of pressure is unstable.
Below table is magnetic valve sequence of movement table：
Skilled person will appreciate that of the industry, the present invention is not restricted to the described embodiments, in above-described embodiment and specification
The principle that the present invention is simply described describing, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements both fall within scope of the claimed invention.Claimed scope is by institute
Attached claims and equivalent thereof define.
Claims (3)
1. take blame for others a control hydraulic system, this hydraulic system include power control valve block, control valve of taking blame for others block, base apparatus and
Take blame for others；It is characterized in that：Described base apparatus, power control valve block, control valve of taking blame for others block and taking blame for others is sequentially connected in series；
Described base apparatus includes plunger displacement pump, motor and fuel tank；Plunger displacement pump be connected with motor and have two right, each plunger displacement pump
One end be all connected in fuel tank by oil pipe, the plunger displacement pump other end is connected with one end of power control valve block；
Oil circuit that described power control valve block is controlled by two plunger displacement pumps connecting forms, including plug-in unit a, the three of plug-in unit b, 2Y1 control
Position four-way solenoid valve, the two-position four-way solenoid valve of 2Y2 control, non-return valve, overflow valve；The hydraulic fluid port x of plug-in unit a and one of them post
The oil pipe of plug pump control is connected and the controlling brancher as oil pipe, and the hydraulic fluid port y of plug-in unit a and a little fuel tank are connected, the oil of plug-in unit a
Mouth z is connected with the hydraulic fluid port P of three position four-way electromagnetic valve, and the hydraulic fluid port B of three position four-way electromagnetic valve is in series with overflow valve a and overflow valve b
Being connected with little fuel tank, the hydraulic fluid port O of three position four-way electromagnetic valve is also connected with little fuel tank；Two-position four-way solenoid valve is arranged on another post
It on the oil pipe of plug pump control and the branch road as oil pipe, between two-position four-way solenoid valve and oil circuit, is connected with a plug-in unit b, two
On the oil pipe that four way solenoid valve is connected with plug-in unit b and be connected with an overflow valve c；Non-return valve is separately mounted on the main road of oil pipe；
Described control valve block of taking blame for others is connected on power control valve block, including the 3-position 4-way intermediary press formula electromagnetism of 4Y2 control
Valve, 4Y3 control bi-bit bi-pass Solenoid ball valve；The A hydraulic fluid port of the 3-position 4-way intermediary press formula magnetic valve of described 4Y2 control is by oil
Pipe is connected in control plug-in unit d pilot operated valve device, and the P hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve is connected on input oil circuit；Three
The T hydraulic fluid port of position four-way intermediary press formula magnetic valve is connected with fuel tank；The B hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve and plug-in unit
C is connected and controls plug-in unit c；
The input oil circuit end of described control valve block of taking blame for others is parallel with the x hydraulic fluid port of plug-in unit c and the x hydraulic fluid port of plug-in unit d respectively；Plug-in unit c
The y hydraulic fluid port of y hydraulic fluid port and plug-in unit d be connected to the x hydraulic fluid port of plug-in unit e and the x hydraulic fluid port of plug-in unit f respectively by oil pipe；Described plug-in unit c's
Z hydraulic fluid port is connected to the upper port taken blame for others and the lower port taken blame for others by oil pipe respectively with the z hydraulic fluid port of plug-in unit d；Z oil at plug-in unit d
Mouth is also in series with plug-in unit g on the lower port connected pipes taken blame for others, and plug-in unit g is by the bi-bit bi-pass electromagnetic ball of 4Y3 magnet control
Valve controls, and the T hydraulic fluid port of bi-bit bi-pass Solenoid ball valve is connected with plug-in unit g and controls plug-in unit g, the y hydraulic fluid port of plug-in unit g and the x hydraulic fluid port of plug-in unit g
It is connected on the z hydraulic fluid port of lower port and the plug-in unit d taking blame for others；The y hydraulic fluid port of described plug-in unit e is connected with the y hydraulic fluid port of plug-in unit f, inserts
The A hydraulic fluid port of z hydraulic fluid port one tunnel of part e and 3-position 4-way intermediary press formula magnetic valve, and centre is in series with overflow valve n, the z of plug-in unit e
Another road of hydraulic fluid port is connected with the x hydraulic fluid port of plug-in unit e and centre is in series with non-return valve；In the z hydraulic fluid port of described plug-in unit f and 3-position 4-way
Between adding pressure type magnetic valve B hydraulic fluid port merge be connected on fuel tank, the B hydraulic fluid port of 3-position 4-way intermediary press formula magnetic valve and fuel tank phase
It is in series with non-return valve and overflow valve m on pipeline even；Be parallel with between overflow valve m and non-return valve one be connected with fuel tank overflow
Stream valve p.
2. one according to claim 1 is taken blame for others control hydraulic system, it is characterised in that：The described y oil taken blame for others with plug-in unit g
Mouth connecting place is provided with Pressure gauge.
3. one according to claim 1 is taken blame for others control hydraulic system, it is characterised in that：On the fuel tank of described base apparatus
It is provided with air filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675810.6A CN106438524A (en) | 2016-08-17 | 2016-08-17 | Jacking cylinder control hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675810.6A CN106438524A (en) | 2016-08-17 | 2016-08-17 | Jacking cylinder control hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106438524A true CN106438524A (en) | 2017-02-22 |
Family
ID=58182802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610675810.6A Pending CN106438524A (en) | 2016-08-17 | 2016-08-17 | Jacking cylinder control hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035922A (en) * | 2017-12-12 | 2018-05-15 | 南通皋液重工股份有限公司 | A kind of stageless setting automatic compensation type hydraulic system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0017868A1 (en) * | 1979-04-19 | 1980-10-29 | Sperry Vickers Zweigniederlassung der Sperry GmbH | Operation monitored valve arrangement |
| CN201137604Y (en) * | 2007-12-06 | 2008-10-22 | 山东泰丰液压设备有限公司 | Cotton press hydraulic controlling valve group |
| CN202877327U (en) * | 2012-11-22 | 2013-04-17 | 浙江浦大液压机械有限公司 | Hydraulic machine for molding automobile sheets |
| CN103847128A (en) * | 2012-11-30 | 2014-06-11 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN103982478A (en) * | 2014-02-19 | 2014-08-13 | 华中科技大学 | Hydraulic system of stepless speed regulation hydropress |
| CN105114376A (en) * | 2015-09-17 | 2015-12-02 | 天津市天锻压力机有限公司 | Hydraulic control system acting on upper ejection cylinder of thermal forming hydraulic machine |
| CN205013408U (en) * | 2015-08-04 | 2016-02-03 | 山东泰丰液压股份有限公司 | Differential hydraulic control device is entirely cut to steel scrap |
| CN105818426A (en) * | 2016-02-18 | 2016-08-03 | 南通皋液液压机有限公司 | Hydraulic system for sewage solid waste hydraulic machine |
| CN206035925U (en) * | 2016-08-17 | 2017-03-22 | 南通皋液液压机有限公司 | Control hydraulic system takes blame for others |
-
2016
- 2016-08-17 CN CN201610675810.6A patent/CN106438524A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0017868A1 (en) * | 1979-04-19 | 1980-10-29 | Sperry Vickers Zweigniederlassung der Sperry GmbH | Operation monitored valve arrangement |
| CN201137604Y (en) * | 2007-12-06 | 2008-10-22 | 山东泰丰液压设备有限公司 | Cotton press hydraulic controlling valve group |
| CN202877327U (en) * | 2012-11-22 | 2013-04-17 | 浙江浦大液压机械有限公司 | Hydraulic machine for molding automobile sheets |
| CN103847128A (en) * | 2012-11-30 | 2014-06-11 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN103982478A (en) * | 2014-02-19 | 2014-08-13 | 华中科技大学 | Hydraulic system of stepless speed regulation hydropress |
| CN205013408U (en) * | 2015-08-04 | 2016-02-03 | 山东泰丰液压股份有限公司 | Differential hydraulic control device is entirely cut to steel scrap |
| CN105114376A (en) * | 2015-09-17 | 2015-12-02 | 天津市天锻压力机有限公司 | Hydraulic control system acting on upper ejection cylinder of thermal forming hydraulic machine |
| CN105818426A (en) * | 2016-02-18 | 2016-08-03 | 南通皋液液压机有限公司 | Hydraulic system for sewage solid waste hydraulic machine |
| CN206035925U (en) * | 2016-08-17 | 2017-03-22 | 南通皋液液压机有限公司 | Control hydraulic system takes blame for others |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035922A (en) * | 2017-12-12 | 2018-05-15 | 南通皋液重工股份有限公司 | A kind of stageless setting automatic compensation type hydraulic system |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Bai Pu town Rugao City, Jiangsu province 226500 Nantong Tongyang Road No. 111 Applicant after: Nantong gaoye heavy Limited by Share Ltd Address before: 226500 Rugao Province, Nantong City, the town of Qian Pu Village Applicant before: Nantong Gaoye Hydraulic Press Machine Co., Ltd. |
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| CB02 | Change of applicant information | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
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| WD01 | Invention patent application deemed withdrawn after publication |