CN106438522A - Main oil cylinder hydraulic control oil circuit for bellows test system - Google Patents
Main oil cylinder hydraulic control oil circuit for bellows test system Download PDFInfo
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- CN106438522A CN106438522A CN201610676544.9A CN201610676544A CN106438522A CN 106438522 A CN106438522 A CN 106438522A CN 201610676544 A CN201610676544 A CN 201610676544A CN 106438522 A CN106438522 A CN 106438522A
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- hydraulic fluid
- fluid port
- valve
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Classifications
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- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
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- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
Abstract
The invention relates to a main oil cylinder hydraulic control oil circuit for bellows test system. The hydraulic system comprises a power control valve block, a main cylinder control valve block, a basic device and a main cylinder; it is characterized in that the basic device, the power control valve block, the main cylinder control valve block are connected with the main cylinder in a series mode; a pressure sensor and a pressure gauge are installed at a joint of an upper port of the main cylinder and a pipe for continuously monitoring the pressure of whole main cylinder port and controlling the pressure stability of the main cylinder; an oil tan of the basic device is provided with an air cleaner for reducing the chances that dust or foreign material in the air get into the oil tank and avoiding pipe blockage and unstable pressure caused by large dust entering oil pipes; through simple connection between the control valve and the pipeline, pressure control on the main cylinder is realized, and even pressure distribution is offered continuously and stably so as to make the pressure test data more accurate.
Description
Technical field
The present invention relates to hydraulic system field, particularly relate to a kind of bellows test system main oil cylinder hydraulic oil circuit control.
Background technology
In pressure testing machine, to master cylinder control it is generally required to accurately control master cylinder stroke thus realization to pressure
The control of power, general when to the control of master cylinder oil circuit control complicated, the backhaul of master cylinder and descending between Electromagnetic Control
Divergence causes the backhaul of oil cylinder, descending and pressurize effect unstable, build-up of pressure test instability, causes pressure test to be imitated
Really undesirable, data are inaccurate.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of bellows test system main oil cylinder hydraulic oil circuit control, solves
The backhaul of master cylinder oil circuit control, descending 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：A kind of bellows test system main oil cylinder hydraulic control
Liquefaction road, this hydraulic system includes power control valve block, master cylinder control valve block, base apparatus and master cylinder；Its innovative point is：Institute
State base apparatus, power control valve block, master cylinder control valve block and master cylinder to be 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 master cylinder control valve block is connected on dynamic valve block, including two-position four-way solenoid valve, plug-in unit c, plug-in unit d；Described plug-in unit c
X hydraulic fluid port be in parallel with the x hydraulic fluid port of plug-in unit d, the output of dynamic valve block is connected with plug-in unit c and plug-in unit d the pipeline connecting, plug-in unit
The two-position four-way solenoid valve b control that c is controlled by 3Y2, plug-in unit c controls the lower port oil circuit of master cylinder valve block；Plug-in unit d is controlled by 3Y1
The two-position four-way solenoid valve c control of system, plug-in unit d controls the upper port oil circuit of master cylinder valve block；
Described lower port oil circuit is connected in the lower port of master cylinder, and the y hydraulic fluid port of plug-in unit c is in series with a plug-in unit e, the y hydraulic fluid port of plug-in unit e
Being connected with the x hydraulic fluid port of plug-in unit f, the z hydraulic fluid port of plug-in unit e is connected on the A hydraulic fluid port of the two-position two-way solenoid valve being controlled by 3Y5；Plug-in unit
The y hydraulic fluid port of f is connected with the lower port of master cylinder, and the z hydraulic fluid port of plug-in unit f is connected to the T oil of the bi-bit bi-pass Solenoid ball valve being controlled by 3Y7
On mouth, the y hydraulic fluid port of plug-in unit f is connected between pipeline with the lower port of master cylinder and is parallel with an overflow valve h；It is connected with plug-in unit e at plug-in unit c
Pipeline on be connected with the x hydraulic fluid port of a plug-in unit g, the z hydraulic fluid port of plug-in unit g is connected to the P of the two-position four-way solenoid valve being controlled by 3Y4
On hydraulic fluid port, the R hydraulic fluid port of two-position four-way solenoid valve is connected on overflow valve d, and the z hydraulic fluid port of plug-in unit g is electric with the two-position four-way of 3Y4 control
It is parallel with an overflow valve e between magnet valve P hydraulic fluid port；
Described upper port oil circuit is connected in the upper port of master cylinder, and the y hydraulic fluid port of plug-in unit d is connected on the x hydraulic fluid port of plug-in unit i, plug-in unit d
Being parallel with plug-in unit h with plug-in unit i and being connected with the x hydraulic fluid port of plug-in unit h, the y hydraulic fluid port of plug-in unit h is connected on fuel tank by pipeline, this pipe
It is parallel with the y hydraulic fluid port of plug-in unit g, overflow valve e and the A hydraulic fluid port by 3Y4 control two-position four-way solenoid valve also by oil pipe on road；
The P hydraulic fluid port of the two-position two-way solenoid valve that the z hydraulic fluid port of plug-in unit h controls with 3Y5 is connected, plug-in unit h and the bi-bit bi-pass electricity with 3Y5 control
It is parallel with overflow valve i between magnet valve；The y hydraulic fluid port of plug-in unit i is connected with the upper port of master cylinder；Between plug-in unit i and the upper port of master cylinder
It is parallel with the two-position four-way Solenoid ball valve being controlled by 3Y6 and be connected with the A hydraulic fluid port of two-position four-way Solenoid ball valve, the two of 3Y6 control
The T hydraulic fluid port of position four-way electromagnetic ball valve is connected on fuel tank；It is also parallel with a plug-in unit j, plug-in unit between plug-in unit i and the upper port of master cylinder
The x hydraulic fluid port of j is connected with upper port oil circuit, and the y hydraulic fluid port of plug-in unit j is connected with the T hydraulic fluid port of the two-position four-way Solenoid ball valve that 3Y6 controls,
The z hydraulic fluid port of plug-in unit j is connected in parallel on the A hydraulic fluid port of the two-position four-way Solenoid ball valve of 3Y6 control and the upper port of master cylinder by non-return valve
Between oil circuit.
Further, the upper port of described master cylinder and pipeline joining place are provided with pressure sensor and 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 upper port of master cylinder and pipeline joining place are provided with pressure sensor and Pressure gauge,
It is easy to carry out the port pressure of whole master cylinder lasting pressure monitoring, the pressure stability of control master cylinder.
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）By being connected of simple control valve and pipeline, it is achieved the Stress control to master cylinder, 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 bellows test system main oil cylinder hydraulic oil circuit control figure.
Fig. 2 is the power control valve block figure of bellows test system main oil cylinder hydraulic oil circuit control.
Fig. 3 is the master cylinder control valve block figure of bellows test system main oil cylinder hydraulic oil circuit control.
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.
A kind of bellows test system main oil cylinder hydraulic oil circuit control as shown in Figure 1 to Figure 3, this hydraulic system includes moving
Force control valve block the 1st, master cylinder control valve block the 2nd, base apparatus 3 and master cylinder 4；The 3rd, power control valve block the 1st, the master cylinder control of described base apparatus
Valve block 2 processed and master cylinder 4 are sequentially connected in series.
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.
Master cylinder control valve block 2 is connected on dynamic valve block 1, including two-position four-way solenoid valve the 12nd, plug-in unit 5c, plug-in unit 5d；Institute
The x hydraulic fluid port of the x hydraulic fluid port and plug-in unit 5d of stating plug-in unit 5c is in parallel, and the output of dynamic valve block 1 and plug-in unit 5c and plug-in unit 5d simultaneously connect
Pipeline is connected, and the two-position four-way solenoid valve 12 that plug-in unit 5c is controlled by 3Y2 controls, and plug-in unit 5c controls the lower port of master cylinder valve block 2
Oil circuit 7；The two-position four-way solenoid valve 12 that plug-in unit 5d is controlled by 3Y1 controls, and plug-in unit 5d controls the upper port oil circuit of master cylinder valve block 2
8.
Lower port oil circuit 7 is connected in the lower port of master cylinder, and the y hydraulic fluid port of plug-in unit 5c is in series with a plug-in unit 5e, plug-in unit 5e's
Y hydraulic fluid port is connected with the x hydraulic fluid port of plug-in unit 5f, and the z hydraulic fluid port of plug-in unit 5e is connected to the A oil of the two-position two-way solenoid valve 9 being controlled by 3Y5
On mouth；The y hydraulic fluid port of plug-in unit 5f is connected with the lower port of master cylinder 4, and the z hydraulic fluid port of plug-in unit 5f is connected to the bi-bit bi-pass being controlled by 3Y7
On the T hydraulic fluid port of Solenoid ball valve 9, the y hydraulic fluid port of plug-in unit 5f is connected between pipeline with the lower port of master cylinder 4 and is parallel with an overflow valve 6h；
Being connected with the x hydraulic fluid port of a plug-in unit 5g on the pipeline that plug-in unit 5c is connected with plug-in unit 5e, the z hydraulic fluid port of plug-in unit 5g is connected to be controlled by 3Y4
On the P hydraulic fluid port of the two-position four-way solenoid valve 12 of system, the R hydraulic fluid port of two-position four-way solenoid valve 12 is connected on overflow valve 6d, plug-in unit 5g
Z hydraulic fluid port and 3Y4 control two-position four-way solenoid valve 12 P hydraulic fluid port between be parallel with an overflow valve 6e.
Upper port oil circuit 8 is connected in the upper port of master cylinder 4, and the y hydraulic fluid port of plug-in unit 5d is connected on the x hydraulic fluid port of plug-in unit 5i,
Plug-in unit 5d is parallel with plug-in unit 5h with plug-in unit 5i and is connected with the x hydraulic fluid port of plug-in unit 5h, and the y hydraulic fluid port of plug-in unit 5h is connected to by pipeline
On fuel tank, this pipeline is parallel with the y hydraulic fluid port of plug-in unit 5g, overflow valve 6e also by oil pipe and 3Y4 is controlled two-position four-way electricity
The A hydraulic fluid port of magnet valve 12；The z hydraulic fluid port of plug-in unit 5h is connected with the P hydraulic fluid port of the two-position two-way solenoid valve 9 that 3Y5 controls, plug-in unit 5h and 3Y5
It is parallel with overflow valve 6i between the two-position two-way solenoid valve 9 of control；The y hydraulic fluid port of plug-in unit 5i is connected with the upper port of master cylinder 4；Plug-in unit
Be parallel with between the upper port of 5i and master cylinder 4 the two-position four-way Solenoid ball valve 12 being controlled by 3Y6 and with two-position four-way Solenoid ball valve
The A hydraulic fluid port of 12 is connected, and the T hydraulic fluid port of the two-position four-way Solenoid ball valve 12 of 3Y6 control is connected on fuel tank；Plug-in unit 5i and master cylinder 4
Also being parallel with a plug-in unit 5j between upper port, the x hydraulic fluid port of plug-in unit 5j is connected with upper port oil circuit, the y hydraulic fluid port of plug-in unit 5j and 3Y6
The T hydraulic fluid port of the two-position four-way Solenoid ball valve 12 of control is connected, and the z hydraulic fluid port of plug-in unit 5j is connected in parallel on 3Y6 control by non-return valve 13
The A hydraulic fluid port of two-position four-way Solenoid ball valve 12 and the upper port oil circuit of master cylinder 4 between.
The upper port of master cylinder 4 and pipeline joining place are provided with pressure sensor 41 and Pressure gauge 42, it is simple to whole to pressure
The port pressure of master cylinder carries out lasting pressure monitoring, the pressure stability of control master cylinder 4.
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 33, 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. a bellows test system main oil cylinder hydraulic oil circuit control, this hydraulic system includes power control valve block, master cylinder control
Valve block processed, base apparatus and master cylinder；It is characterized in that：Described base apparatus, power control valve block, master cylinder control valve block and master cylinder
It 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 master cylinder control valve block is connected on dynamic valve block, including two-position four-way solenoid valve, plug-in unit c, plug-in unit d；Described plug-in unit c
X hydraulic fluid port be in parallel with the x hydraulic fluid port of plug-in unit d, the output of dynamic valve block is connected with plug-in unit c and plug-in unit d the pipeline connecting, plug-in unit
The two-position four-way solenoid valve b control that c is controlled by 3Y2, plug-in unit c controls the lower port oil circuit of master cylinder valve block；Plug-in unit d is controlled by 3Y1
The two-position four-way solenoid valve c control of system, plug-in unit d controls the upper port oil circuit of master cylinder valve block；
Described lower port oil circuit is connected in the lower port of master cylinder, and the y hydraulic fluid port of plug-in unit c is in series with a plug-in unit e, the y hydraulic fluid port of plug-in unit e
Being connected with the x hydraulic fluid port of plug-in unit f, the z hydraulic fluid port of plug-in unit e is connected on the A hydraulic fluid port of the two-position two-way solenoid valve being controlled by 3Y5；Plug-in unit
The y hydraulic fluid port of f is connected with the lower port of master cylinder, and the z hydraulic fluid port of plug-in unit f is connected to the T oil of the bi-bit bi-pass Solenoid ball valve being controlled by 3Y7
On mouth, the y hydraulic fluid port of plug-in unit f is connected between pipeline with the lower port of master cylinder and is parallel with an overflow valve h；It is connected with plug-in unit e at plug-in unit c
Pipeline on be connected with the x hydraulic fluid port of a plug-in unit g, the z hydraulic fluid port of plug-in unit g is connected to the P of the two-position four-way solenoid valve being controlled by 3Y4
On hydraulic fluid port, the R hydraulic fluid port of two-position four-way solenoid valve is connected on overflow valve d, and the z hydraulic fluid port of plug-in unit g is electric with the two-position four-way of 3Y4 control
It is parallel with an overflow valve e between magnet valve P hydraulic fluid port；
Described upper port oil circuit is connected in the upper port of master cylinder, and the y hydraulic fluid port of plug-in unit d is connected on the x hydraulic fluid port of plug-in unit i, plug-in unit d
Being parallel with plug-in unit h with plug-in unit i and being connected with the x hydraulic fluid port of plug-in unit h, the y hydraulic fluid port of plug-in unit h is connected on fuel tank by pipeline, this pipe
It is parallel with the y hydraulic fluid port of plug-in unit g, overflow valve e and the A hydraulic fluid port by 3Y4 control two-position four-way solenoid valve also by oil pipe on road；
The P hydraulic fluid port of the two-position two-way solenoid valve that the z hydraulic fluid port of plug-in unit h controls with 3Y5 is connected, plug-in unit h and the bi-bit bi-pass electricity with 3Y5 control
It is parallel with overflow valve i between magnet valve；The y hydraulic fluid port of plug-in unit i is connected with the upper port of master cylinder；Between plug-in unit i and the upper port of master cylinder
It is parallel with the two-position four-way Solenoid ball valve being controlled by 3Y6 and be connected with the A hydraulic fluid port of two-position four-way Solenoid ball valve, the two of 3Y6 control
The T hydraulic fluid port of position four-way electromagnetic ball valve is connected on fuel tank；It is also parallel with a plug-in unit j, plug-in unit between plug-in unit i and the upper port of master cylinder
The x hydraulic fluid port of j is connected with upper port oil circuit, and the y hydraulic fluid port of plug-in unit j is connected with the T hydraulic fluid port of the two-position four-way Solenoid ball valve that 3Y6 controls,
The z hydraulic fluid port of plug-in unit j is connected in parallel on the A hydraulic fluid port of the two-position four-way Solenoid ball valve of 3Y6 control and the upper port of master cylinder by non-return valve
Between oil circuit.
2. a kind of bellows test system main oil cylinder hydraulic oil circuit control according to claim 1, it is characterised in that：Described
The upper port of master cylinder and pipeline joining place are provided with pressure sensor and Pressure gauge.
3. a kind of bellows test system main oil cylinder hydraulic oil circuit control according to claim 1, it is characterised in that：Described
It is provided with air filter on the fuel tank of base apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676544.9A CN106438522A (en) | 2016-08-17 | 2016-08-17 | Main oil cylinder hydraulic control oil circuit for bellows test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676544.9A CN106438522A (en) | 2016-08-17 | 2016-08-17 | Main oil cylinder hydraulic control oil circuit for bellows test system |
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| CN106438522A true CN106438522A (en) | 2017-02-22 |
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| CN201610676544.9A Pending CN106438522A (en) | 2016-08-17 | 2016-08-17 | Main oil cylinder hydraulic control oil circuit for bellows test system |
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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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| EP0017868A1 (en) * | 1979-04-19 | 1980-10-29 | Sperry Vickers Zweigniederlassung der Sperry GmbH | Operation monitored valve arrangement |
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| 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 |
| CN206175354U (en) * | 2016-08-17 | 2017-05-17 | 南通皋液液压机有限公司 | Bellows test system master cylinder hydraulic control oil circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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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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Application publication date: 20170222 |