CN105736492A - Hydraulic oil cylinder and oil way system thereof - Google Patents
Hydraulic oil cylinder and oil way system thereof Download PDFInfo
- Publication number
- CN105736492A CN105736492A CN201610231100.4A CN201610231100A CN105736492A CN 105736492 A CN105736492 A CN 105736492A CN 201610231100 A CN201610231100 A CN 201610231100A CN 105736492 A CN105736492 A CN 105736492A
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- CN
- China
- Prior art keywords
- oil
- valve
- oil cylinder
- hydraulic
- logic
- 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.)
- Granted
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
-
- 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
- F15B21/042—Controlling the temperature of the fluid
Abstract
The invention provides a hydraulic oil cylinder and an oil way system thereof. The hydraulic oil cylinder mainly comprises an oil cylinder, a liquid filling valve, a piston, an oil tank and a hydraulic pump, wherein the liquid filling valve is arranged on one side of the oil cylinder; an inner cavity is arranged in the oil cylinder; an oil outlet of the inner cavity communicates with the oil tank through the liquid filling valve; an oil inlet is formed in the oil cylinder and communicates with the inner cavity; a small oil drainage hole is formed in the oil cylinder and communicates with the inner cavity; a sleeve rod is arranged above the oil cylinder; the inner cavity is in butt joint with the sleeve rod; the piston is movably arranged in the sleeve rod and penetrates through the oil cylinder and the inner cavity; the liquid filling valve is connected the hydraulic pump through logical oil ways; and the oil inlet is connected with a double pump through the logical oil ways. The oil way system is controlled by the logical oil ways, wherein the logical oil ways comprise an oil inlet logical oil way and an oil return logical oil way. According to the hydraulic oil cylinder and the oil way system thereof, the hydraulic oil cylinder comprises three main parts, namely, a power system, a control system and an execution system; fluid oil with certain inner pressure is generated through an oil pump and is conveyed to the oil cylinder through the control of the logical oil ways; the rising speed of the piston can reach 3 meters/second, and the piston performs free-fall motion when falling; and the hydraulic oil cylinder is high in speed and low in energy consumption.
Description
Technical field
The present invention relates to the technical field of hydraulic jack system and equipment, refer in particular to a kind of hydraulic jack and oil piping system thereof.
Background technology
The important auxiliary equipment of one that tipper is the quickly plasticizing of ore deposit soil is beaten in ore deposit soil plasticising, it is by traditional machine treadle-operated tilt hammer for hulling rice, develop into the upright beetle with cylinder body, at present, this upright beetle with cylinder body mainly adopts sprocket wheel, chain drive hammer handle, the Chinese utility model patent disclosed pottery plasticising automatic turnover machine that such as application number is 201420345310.2, Authorization Notice No. is CN203901516U, authorized announcement date is 2014.10.29, this hoisting way is not only excessively slow, and shakiness of rising and falling, loss is big.If but drive it device and change common hydraulic jack driving into, through test, although it rises and falls relatively stable, but promoting speed and still can not meet requirement, and the most important thing is, when piston rod declines, oil cylinder draining is excessively slow, cause that the power that piston falls is not enough, cause that longevity of service, efficiency are low, and china clay is beaten uneven, it is impossible to meet enterprise demand.
Summary of the invention
Present invention aims to the existing state of the art, it is provided that a kind of hydraulic jack and oil piping system thereof, controlled to realize piston rapid increase by logic oil circuit, and when declining, quick draining is the movement of falling object, its speed is fast, energy consumption is low.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
The present invention is a kind of hydraulic jack, mainly include oil cylinder, replenishing valve, piston, fuel tank and hydraulic pump, described oil cylinder side is provided with replenishing valve, described oil cylinder is provided with inner chamber, the oil-out of inner chamber is connected with fuel tank by replenishing valve, oil cylinder is provided with oil-in and inner space, oil cylinder is provided with little drain tap and inner space, oil cylinder is arranged over loop bar, inner chamber docks with loop bar, piston is active in loop bar and runs through oil cylinder and inner chamber, and described replenishing valve is connected with hydraulic pump by logic oil circuit, and oil-in is connected with duplex pump by logic oil circuit.
In such scheme, loop bar is connected with cylinder seal by upper press cover, is additionally provided with the lower cover being connected with cylinder seal and agreeing with piston below oil cylinder.
In such scheme, logic oil circuit is made up of fuel feeding logic oil circuit and oil return circuit.
Further, fuel feeding logic oil circuit includes duplex pump, first conductive magnetism check valve, precursor overflow valve, Logical Relief Valve, logic check valve, check valve, stop valve and Pressure gauge.
Further, Logical Relief Valve connects duplex pump and fuel tank, and Logical Relief Valve is controlled to open and close, carried out pressure regulation by precursor overflow valve by first conductive magnetism check valve.
Further, in duplex pump after a routing pressure table, stop valve detection, pressure regulation, being connected with logic check valve, Logical Relief Valve respectively again through check valve, another road is connected with logic check valve, Logical Relief Valve respectively, wherein, logic check valve is connected with the oil-in of oil cylinder.
In such scheme, oil return circuit includes hydraulic pump, unidirectional feather valve, cooler, choke valve, electromagnetism check valve, check valve, accumulator, electromagnetic valve, replenishing valve, stop valve and Pressure gauge.
Further, little drain tap passes through electromagnetism one-way valve opens, and fraction oil is leaked into fuel tank, and replenishing valve is opened by accumulator, and electromagnetic valve is opened simultaneously, then the oil in inner chamber releases through replenishing valve and enters fuel tank through subcooler.
Further, hydraulic pump enters accumulator by unidirectional feather valve, and accumulator is connected with stop valve, Pressure gauge, and when accumulator is completely pressed, hydraulic pump is by commutating through unidirectional feather valve, and unnecessary is cooled down by cooled device and send into fuel tank.
Further, accumulator is also connected with choke valve, by oily cooled device being leaked into fuel tank after throttle valve adjustment pressure.
The invention have the benefit that
1. system adopts duplex pump fuel feeding, improves the oil mass of fuel feeding, accelerates the rate of climb, and the rate of climb is up to 3 meter per seconds；
2. the control of oil circuit adopts logical valve, and negotiability is big, the pressure loss is little, and it is active in one's movements, respond fast, it is little to impact, can quick draining, formation movement of falling object when making decline；
3. piston rod and piston adopt integrated design, and drive end bearing bracket oil charging-discharging is integrated, and sealing gland is integrated, and the control of topping up and cooling are similarly Integral design, make system run smoothness, and speed is fast, energy consumption is low, stable.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is the structural representation of the middle oil cylinder of the present invention；
The oil piping system figure of 3 present invention of accompanying drawing.
Detailed description of the invention:
In order to make juror can the purpose of the present invention, feature and function be further understood that, hereby lift preferred embodiment and coordinate graphic detailed description as follows:
nullRefer to Fig. 1、Shown in Fig. 2，System is the structural representation of the preferred embodiments of the invention，The present invention is a kind of hydraulic jack，Mainly include oil cylinder 1、Replenishing valve 2、Piston 3、Fuel tank 4 and hydraulic pump 5，Described oil cylinder 1 side is provided with replenishing valve 2，Described oil cylinder 1 is provided with inner chamber 11，The oil-out 111 of inner chamber 11 is connected with fuel tank 4 by replenishing valve 2，Oil cylinder 1 is provided with oil-in 110 and connects with inner chamber 11，Oil cylinder 1 is provided with little drain tap 311 and connects with inner chamber 11，Oil cylinder 1 is arranged over loop bar 30，Inner chamber 11 docks with loop bar 30，Piston 3 is active in loop bar 30 and runs through oil cylinder 1 and inner chamber 11，Wherein，Loop bar 30 is tightly connected by upper press cover 31 and oil cylinder 1，The lower cover 32 being tightly connected with oil cylinder 1 and agreeing with piston 3 it is additionally provided with below oil cylinder 1.Described replenishing valve 2 is connected with hydraulic pump 5 by logic oil circuit, and oil-in 110 is connected with duplex pump 6 by logic oil circuit.Wherein, logic oil circuit is made up of oil-feed logic oil circuit and oil return logic oil circuit.
In such scheme, as it is shown on figure 3, inner chamber 11 is carried out fuel feeding by described fuel feeding logic oil circuit, it includes duplex pump 6, first conductive magnetism check valve 61, precursor overflow valve 62, Logical Relief Valve 63, logic check valve 64, check valve 65, stop valve 66 and Pressure gauge 67.Wherein, Logical Relief Valve 63 connects duplex pump 6 and fuel tank 4, and Logical Relief Valve 63 is controlled to open and close, carried out pressure regulation by precursor overflow valve 62 by first conductive magnetism check valve 61, when system load oversteps the extreme limit, opens overflow by Logical Relief Valve 63, it is provided that overload protection；After oil is extracted by duplex pump 6 from fuel tank 4, it is divided into two-way, after one routing pressure table 67, stop valve 66 detect and regulate pressure, it is connected with logic check valve 64, Logical Relief Valve 63 respectively again through check valve 65, another road is connected with logic check valve 64, Logical Relief Valve 63 respectively, wherein, logic check valve 64 is connected with the oil-in 110 of oil cylinder 1.
In such scheme, as shown in Figure 3, oil return circuit provides system oil-way cooling and oil return, and it includes hydraulic pump 5, unidirectional feather valve 51, cooler 52, choke valve 53, electromagnetism check valve 54, check valve 541, accumulator 55, electromagnetic valve 56, replenishing valve 2, stop valve 58 and Pressure gauge 59.Wherein, little drain tap 311 is opened by electromagnetism check valve 57, first fraction oil is leaked into fuel tank 4 when piston 3 declines, and replenishing valve 2 is by accumulator 55 fuel feeding, electromagnetic valve 56 is opened, then in inner chamber 11, substantial amounts of oil releases entrance fuel tank 4 through replenishing valve 2, reaches the purpose of quick draining；Before replenishing valve 2 is opened; hydraulic pump 5 extracts oil from fuel tank 4 and by unidirectional feather valve 54, oil is sent into accumulator 55; it is used for opening replenishing valve 2 by accumulator 55 pressure store oil; accumulator 55 is connected with stop valve 58, Pressure gauge 59; pressure detecting and pressure regulation can be carried out; and owing to hydraulic pump 5 does not quit work; when accumulator 55 is completely pressed; the unnecessary cooled device 52 of oil is cooled down and sends into fuel tank 4 by unidirectional feather valve 51 by hydraulic pump 5; carry out overload protection on the one hand; on the other hand oil circuit is cooled down, reduce oil temperature；In this part, accumulator 55 is also connected with choke valve 53, before start or when keeping in repair, can first pass through choke valve 53 and regulate pressure, cooled for the oil in accumulator 55 device 52 is leaked into fuel tank 4.
Certainly, illustrated above it is only better embodiment of the present invention, not limits the use scope of the present invention with this, therefore, every in the principle of the invention, make equivalence change and should be included in protection scope of the present invention.
Claims (10)
- null1. a hydraulic jack，Mainly include oil cylinder (1)、Replenishing valve (2)、Piston (3)、Fuel tank (4) and hydraulic pump (5)，Described oil cylinder (1) side is provided with replenishing valve (2)，It is characterized in that: described oil cylinder (1) is provided with inner chamber (11)，The oil-out (111) of inner chamber (11) is connected with fuel tank (4) by replenishing valve (2)，Oil cylinder (1) is provided with oil-in (110) and connects with inner chamber (11)，Oil cylinder (1) is provided with little drain tap (311) and connects with inner chamber (11)，Oil cylinder (1) is arranged over loop bar (30)，Inner chamber (11) docks with loop bar (30)，Piston (3) is active in loop bar (30) and runs through oil cylinder (1) and inner chamber (11)，Described replenishing valve (2) is connected with hydraulic pump (5) by logic oil circuit，Oil-in (110) is connected with duplex pump (6) by logic oil circuit.
- 2. a kind of hydraulic jack according to claim 1, it is characterized in that: described loop bar (30) is tightly connected by upper press cover (31) and oil cylinder (1), be additionally provided with the lower cover (32) being tightly connected with oil cylinder (1) and agreeing with piston (3) in oil cylinder (1) lower section.
- 3. the oil piping system of a kind of hydraulic jack according to claim 1 and 2, it is characterised in that: described logic oil circuit is made up of fuel feeding logic oil circuit and oil return circuit.
- 4. the oil piping system of a kind of hydraulic jack according to claim 3, it is characterised in that: described fuel feeding logic oil circuit includes duplex pump (6), first conductive magnetism check valve (61), precursor overflow valve (62), Logical Relief Valve (63), logic check valve (64), check valve (65), stop valve (66) and Pressure gauge (67).
- 5. the oil piping system of a kind of hydraulic jack according to claim 4, it is characterized in that: described Logical Relief Valve (63) connects duplex pump (6) and fuel tank (4), Logical Relief Valve (63) is controlled to open and close, carried out pressure regulation by precursor overflow valve (62) by first conductive magnetism check valve (61).
- 6. the oil piping system of a kind of hydraulic jack according to claim 5, it is characterized in that: in described duplex pump (6) after a routing pressure table (67), stop valve (66) detection, pressure regulation, it is connected with logic check valve (64), Logical Relief Valve (63) respectively again through check valve (65), another road is connected with logic check valve (64), Logical Relief Valve (63) respectively, wherein, logic check valve (64) is connected with the oil-in (110) of oil cylinder (1).
- 7. the oil piping system of a kind of hydraulic jack according to claim 3, it is characterised in that: described oil return circuit includes hydraulic pump (5), unidirectional feather valve (51), cooler (52), choke valve (53), electromagnetism check valve (54), check valve (541), accumulator (55), electromagnetic valve (56), replenishing valve (2), stop valve (58) and Pressure gauge (59).
- 8. the oil piping system of a kind of hydraulic jack according to claim 7, it is characterized in that: described little drain tap (311) is opened by electromagnetism check valve (57), fraction oil is leaked into fuel tank (4), replenishing valve (2) is opened by accumulator (55), electromagnetic valve (56) is opened simultaneously, then the oil in inner chamber (11) releases through replenishing valve (2) and enters fuel tank (4) through subcooler (52).
- 9. the oil piping system of a kind of hydraulic jack according to claim 8, it is characterized in that: described hydraulic pump (5) enters accumulator (55) by unidirectional feather valve (54), accumulator (55) is connected with stop valve (58), Pressure gauge (59), when accumulator (55) is completely pressed, hydraulic pump (5) is by commutating through unidirectional feather valve (51), and unnecessary is cooled down and send into fuel tank (4) by cooled device (52).
- 10. the oil piping system of a kind of hydraulic jack according to claim 9, it is characterised in that: described accumulator (55) is also connected with choke valve (53), after regulating pressure by choke valve (53), oily cooled device (52) is leaked into fuel tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610231100.4A CN105736492B (en) | 2016-04-14 | 2016-04-14 | A kind of hydraulic jack and its oil piping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610231100.4A CN105736492B (en) | 2016-04-14 | 2016-04-14 | A kind of hydraulic jack and its oil piping system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736492A true CN105736492A (en) | 2016-07-06 |
| CN105736492B CN105736492B (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610231100.4A Active CN105736492B (en) | 2016-04-14 | 2016-04-14 | A kind of hydraulic jack and its oil piping system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09122999A (en) * | 1995-11-07 | 1997-05-13 | Amada Co Ltd | Hydraulic circuit for driving double cylinder |
| CN102954055A (en) * | 2012-11-19 | 2013-03-06 | 无锡市京锡冶金液压机电有限公司 | Speed adjusting method of hydraulic system transmission mechanism |
| CN104121255A (en) * | 2014-07-18 | 2014-10-29 | 国家电网公司 | Electric-hydraulic proportional loop system |
| CN204312829U (en) * | 2014-11-04 | 2015-05-06 | 江苏大唐国际吕四港发电有限责任公司 | A kind of hydraulic butterfly valve controls actuator |
| CN103847128B (en) * | 2012-11-30 | 2015-11-18 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN105221497A (en) * | 2015-10-27 | 2016-01-06 | 天津市天锻压力机有限公司 | High speed pre-shaping hydraulic press hydraulic control system |
| CN105422518A (en) * | 2015-12-16 | 2016-03-23 | 佛山联升压铸科技有限公司 | Hydraulic system with fast injection loops of die casting machine |
| CN105422521A (en) * | 2015-12-16 | 2016-03-23 | 桂林星辰科技股份有限公司 | Hydraulic linear drive system based on control of servo pumps, and control method |
| CN205605517U (en) * | 2016-04-14 | 2016-09-28 | 刘湖南 | Hydraulic oil cylinder |
-
2016
- 2016-04-14 CN CN201610231100.4A patent/CN105736492B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09122999A (en) * | 1995-11-07 | 1997-05-13 | Amada Co Ltd | Hydraulic circuit for driving double cylinder |
| CN102954055A (en) * | 2012-11-19 | 2013-03-06 | 无锡市京锡冶金液压机电有限公司 | Speed adjusting method of hydraulic system transmission mechanism |
| CN103847128B (en) * | 2012-11-30 | 2015-11-18 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN104121255A (en) * | 2014-07-18 | 2014-10-29 | 国家电网公司 | Electric-hydraulic proportional loop system |
| CN204312829U (en) * | 2014-11-04 | 2015-05-06 | 江苏大唐国际吕四港发电有限责任公司 | A kind of hydraulic butterfly valve controls actuator |
| CN105221497A (en) * | 2015-10-27 | 2016-01-06 | 天津市天锻压力机有限公司 | High speed pre-shaping hydraulic press hydraulic control system |
| CN105422518A (en) * | 2015-12-16 | 2016-03-23 | 佛山联升压铸科技有限公司 | Hydraulic system with fast injection loops of die casting machine |
| CN105422521A (en) * | 2015-12-16 | 2016-03-23 | 桂林星辰科技股份有限公司 | Hydraulic linear drive system based on control of servo pumps, and control method |
| CN205605517U (en) * | 2016-04-14 | 2016-09-28 | 刘湖南 | Hydraulic oil cylinder |
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| Publication number | Publication date |
|---|---|
| CN105736492B (en) | 2018-01-26 |
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