CN108386408A - A kind of adjusting method of high speed and high pressure conversion cylinder system and its thrust and speed - Google Patents
A kind of adjusting method of high speed and high pressure conversion cylinder system and its thrust and speed Download PDFInfo
- Publication number
- CN108386408A CN108386408A CN201810196564.5A CN201810196564A CN108386408A CN 108386408 A CN108386408 A CN 108386408A CN 201810196564 A CN201810196564 A CN 201810196564A CN 108386408 A CN108386408 A CN 108386408A
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- China
- Prior art keywords
- oil
- vessel
- oilhole
- cylinder
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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
- 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
- F15B15/1433—End caps
-
- 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
- F15B15/1457—Piston rods
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of high speed and high pressure conversion cylinder system and its adjusting method of thrust and speed, adjusting piston column thrust and movement speed.Oil cylinder front cover and oil cylinder rear cover are separately mounted to the rear and front end of cylinder body；Oil pocket is provided in cylinder body, piston boit is slidably mounted in oil pocket, and oil pocket is divided into front oil pocket and back oil pocket by the seal on piston boit；Protecgulum oilhole is connected to front oil pocket, and rear cover oilhole is connected to back oil pocket；The oil outlet of preceding vessel is connected to front oil pocket, and the oil outlet of preceding vessel is equipped with preceding check valve；The oil outlet of vessel is connected to back oil pocket afterwards, and the oil outlet of rear vessel is equipped with rear check valve；Protecgulum oilhole is connect by control valve group with oil pump and fuel tank, and rear cover oilhole is connect by control valve group with oil pump and fuel tank, and the oil inlet of preceding vessel is connect by control valve group with oil pump, and the oil inlet of rear vessel is connect by control valve group with oil pump.
Description
Technical field
The present invention relates to a kind of high speed and high pressure conversion cylinder system and its adjusting methods of thrust and speed, for being molded into
In type machine.
Background technology
Current injection moulding machine ejection cylinder, as applicant possess application No. is 201120114918.0 China
Shown in patent, it is indistinguishable in oil cylinder internal high pressure high speed, only passes through the change of external oil circuit and changing for oil pump capacity
Become to adjust the thrust and speed of oil cylinder, high energy consumption, cost are big.
Invention content
It is an object of the invention to overcome above-mentioned deficiency existing in the prior art, and provide it is a kind of it is reasonable in design,
The high speed and high pressure of adjusting piston column thrust and movement speed converts cylinder system and its adjusting method of thrust and speed.
Technical solution is used by the present invention solves the above problems：A kind of high speed and high pressure conversion cylinder system, including oil
Cylinder and oil supply system；Oil cylinder includes piston boit, oil cylinder front cover, oil cylinder rear cover and cylinder body；Oil cylinder front cover and oil cylinder rear cover difference
Mounted on the rear and front end of cylinder body；Oil pocket is provided in cylinder body, piston boit is slidably mounted in oil pocket, close on piston boit
Oil pocket is divided into front oil pocket and back oil pocket by envelope body；Oil supply system includes control valve group fuel tank and oil pump；It is characterized in that：Oil cylinder
Be provided with protecgulum oilhole in protecgulum, rear cover oilhole be provided in oil cylinder rear cover, protecgulum oilhole is connected to front oil pocket, rear cover oilhole with
Back oil pocket is connected to；The front of piston boit is provided with preceding vessel, and rear portion is provided with rear vessel；Preceding vessel have oil inlet with it is fuel-displaced
Mouthful, the oil outlet of preceding vessel is connected to front oil pocket, and the oil outlet of preceding vessel is equipped with preceding check valve；Afterwards vessel have oil inlet with
The oil outlet of oil outlet, rear vessel is connected to back oil pocket, and the oil outlet of rear vessel is equipped with rear check valve；The oil supply system
Further include control valve group, protecgulum oilhole is connect by control valve group with oil pump and fuel tank, and rear cover oilhole passes through control valve group and oil
Pump is connected with fuel tank, and the oil inlet of preceding vessel is connect by control valve group with oil pump, and the oil inlet of rear vessel passes through control valve group
It is connect with oil pump.
Control valve group of the present invention includes front two triple valve, rear two-position three-way valve and two position four-way valves；Front two
Triple valve is connect with the oil inlet of protecgulum oilhole and preceding vessel respectively；Afterwards two-position three-way valve respectively with rear cover oilhole and rear vessel
Oil inlet connects；Two position four-way valves are connect with front two triple valve, rear two-position three-way valve, oil pump, fuel tank respectively.
Oil cylinder of the present invention further includes end plate；The front and rear of piston boit is respectively fixed with end plate, end plate will before
Vessel and rear vessel seal；The oil inlet of the oil inlet of preceding vessel and rear vessel is arranged on corresponding end plate.
A kind of adjusting method of high speed and high pressure conversion cylinder system thrust and speed, it is characterised in that：Process is as follows：
One, when oil cylinder action direction is made for action of marching forward after, oil pump feed；
When piston boit needs high speed, control valve group action, oil pump is connected with rear cover oilhole, and protecgulum oilhole is connected with fuel tank,
Pressure oil enters back oil pocket from rear cover oilhole, and rear check valve is closed, and piston boit moves from the front to the back；And in front oil pocket
Pressure oil back into fuel tank by protecgulum oilhole；
When piston boit needs high thrust, control valve group action, oil pump is connected with the oil inlet of rear vessel, and pressure oil is from rear vessel
Oil inlet enter rear vessel, rear check valve is in the open state, and the pressure oil in front oil pocket backs into oil by protecgulum oilhole
Case；
When two, being acted when oil cylinder action direction is from the front to the back, oil pump feed；
When piston boit needs high speed, control valve group action, oil pump is connected with protecgulum oilhole, and rear cover oilhole is connected with fuel tank,
Pressure oil enters front oil pocket from protecgulum oilhole, and preceding check valve is closed, and piston boit moves from the front to the back；And back oil pocket pressure
Power oil backs into fuel tank by rear cover oilhole；
When piston boit needs high thrust, control valve group action, oil pump is connected with the oil inlet of preceding vessel, and pressure oil is from preceding vessel
Oil inlet enter preceding vessel, preceding check valve is in the open state, and the pressure oil in back oil pocket backs into oil by rear cover oilhole
Case；
In the above process, in the case where the thrust of piston boit is enough, by regulating piston column diameter to adjust oil pocket volume,
By adjusting oil pocket volume come regulating piston column movement speed.
Compared with prior art, the present invention haing the following advantages and effect：1, simple in structure, it is easy to adjust.2, it is adjusted
Piston boit thrust and movement speed, low energy consumption, cost is small.
Description of the drawings
Fig. 1 is the structural schematic diagram one of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram two of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram three of the embodiment of the present invention.
Fig. 4 is the structural schematic diagram four of the embodiment of the present invention.
Fig. 5 be Fig. 1 in A-A to schematic cross-sectional view.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited in following embodiments.
Embodiment：
Referring to Fig. 1 to Fig. 5, the embodiment of the present invention includes oil cylinders and oil supply system 12.Oil cylinder include piston boit 1, oil cylinder front cover 2,
Preceding check valve 4, rear check valve 5, oil cylinder rear cover 6, end plate 7 and cylinder body 13.Oil supply system 12 includes control valve group, 3 and of fuel tank
Oil pump 11.
Oil cylinder front cover 2 and oil cylinder rear cover 6 are separately mounted to the rear and front end of cylinder body 13.Before being provided in oil cylinder front cover 2
Lid oilhole 21 is provided with rear cover oilhole 61 in oil cylinder rear cover 6.
Oil pocket is provided in cylinder body 13, piston boit 1 is slidably mounted in oil pocket, and the seal 14 on piston boit 1 will be oily
Chamber is divided into front oil pocket 131 and back oil pocket 132, and protecgulum oilhole 21 is connected to front oil pocket 131, rear cover oilhole 61 and back oil pocket 132
Connection.
The front of piston boit 1 is provided with preceding vessel 111, and rear portion is provided with rear vessel 112.
There is preceding vessel 111 oil inlet 113 and oil outlet, the oil outlet of preceding vessel 111 to be connected to front oil pocket 131.Preceding appearance
Check valve 4 before the oil outlet of chamber 111 is equipped with.
There is vessel 112 oil inlet 114 and oil outlet, the oil outlet of rear vessel 112 to be connected to back oil pocket 132 afterwards.After hold
The oil outlet of chamber 112 is equipped with rear check valve 5.
The front and rear of piston boit 1 is respectively fixed with end plate 7, and end plate 7 seals preceding vessel 111 and rear vessel 112.Before
The oil inlet 113 of vessel 111 and the oil inlet 114 of rear vessel 112 are arranged on corresponding end plate 7.
Protecgulum oilhole 21 is connect by control valve group with oil pump 11 and fuel tank 3.Rear cover oilhole 61 passes through control valve group and oil
Pump 11 and fuel tank 3 connect.
The oil inlet 113 of preceding vessel 111 is connect by control valve group with oil pump 11.The oil inlet 114 of vessel 112 passes through afterwards
Control valve group is connect with oil pump 11.
Control valve group includes front two triple valve 9, rear two-position three-way valve 8 and two position four-way valves 10.
Front two triple valve 9 is connect with the oil inlet 113 of protecgulum oilhole 21 and preceding vessel 111 respectively, rear two-position three-way valve 8
It is connect respectively with the oil inlet 114 of rear cover oilhole 61 and rear vessel 112.Two position four-way valves 10 respectively with front two triple valve 9, after
Two-position three-way valve 8, oil pump 11, fuel tank 3 connect.
Check valve 5 is in the case of no any pressure afterwards, and under the action of itself spring, rear check valve 5, which is in, closes
State, back oil pocket 132 are not connected to rear vessel 112, and in the logical oil of back oil pocket 132, rear unidirectional then when 112 obstructed oil of vessel
Valve 5 is also at closed state；In addition such as the logical oil of rear vessel 112, and back oil pocket 132 is not from when rear cover 61 oil inlet of oilhole, rear unidirectional
Valve 5 is opened.Similarly, in the case of no any pressure, under the action of itself spring, preceding check valve 4 is in preceding check valve 4
Closed state, front oil pocket 131 are not connected to preceding vessel 111, and in the logical oil of front oil pocket 131, and when 111 obstructed oil of preceding vessel, it is preceding
Check valve 4 is also at closed state；In addition such as the logical oil of preceding vessel 111, and front oil pocket 131 is not from when protecgulum 21 oil inlet of oilhole, preceding
Check valve 4 is opened.
A kind of adjusting method of high speed and high pressure conversion cylinder system thrust and speed, process are as follows：
One, such as Fig. 1, when oil cylinder action direction is from the front to the back（I.e. in figure R to）When carrying out high speed motion, 11 fuel feeding of oil pump；
Two position four-way valves, 10 electromagnet obtain electric, 9 electromagnet of front two triple valve obtain electric, rear 8 electromagnet of two-position three-way valve must not electricity,
Oil pump 11 and rear cover oilhole 61 are connected, and protecgulum oilhole 21 is connected with fuel tank 3, pressure oil such as Fig. 1 by two position four-way valves 10, after two
Position three-way valve 8 enters back oil pocket 132 from rear cover oilhole 61, and rear check valve 5 is closed, and piston boit 1 moves from the front to the back
It is dynamic；And the pressure oil in front oil pocket 131 backs into fuel tank 3 by protecgulum oilhole 21, front two triple valve 9, two position four-way valves 10, by
Small in 131 volume of front oil pocket, fuel-displaced fast, resistance is small, improves the movement speed of piston boit 1；When needing high thrust, such as Fig. 2,
8 electromagnet of two-position three-way valve obtains electric afterwards, and the oil inlet 114 of oil pump 11 and rear vessel 112 is connected, and pressure oil is from rear vessel 112
Oil inlet 114 enters rear vessel 112, and rear check valve 5 is in the open state, and the pressure oil in front oil pocket 131 is by protecgulum oil
Hole 21, front two triple valve 9 and two position four-way valves 10 back into fuel tank 3, and the compression area of system pressure P is (D1 2-d2+ D1 2) ×
π reaches maximum, and thrust reaches maximum.
Two, such as Fig. 3, when oil cylinder action direction is from the front to the back（I.e. in figure Q to）When carrying out high speed motion, oil pump 11 supplies
Oil；Two position four-way valves, 10 electromagnet must not electricity, rear 8 electromagnet of two-position three-way valve must not electricity, 9 electromagnet of front two triple valve obtain
Electricity, oil pump 11 and protecgulum oilhole 21 are connected, and rear cover oilhole 61 is connected with fuel tank 3, pressure oil such as Fig. 3 by two position four-way valves 10,
Front two triple valve 9 enters front oil pocket 131 from protecgulum oilhole 21, and preceding check valve 4 is closed, and piston boit 1 is from the front to the back
It is mobile；And 132 pressure oil of back oil pocket by rear cover oilhole 61, after two-position three-way valve 8, two position four-way valves 10 back into fuel tank 3, due to
132 volume of back oil pocket is small, and fuel-displaced fast, resistance is small, improves the movement speed of piston boit 1；When needing high thrust, such as Fig. 4 is preceding
9 electromagnet of two-position three-way valve must not electricity, the oil inlet 113 of oil pump 11 and preceding vessel 111 is connected, and pressure oil is from preceding vessel 111
Oil inlet 113 enters preceding vessel 111, and preceding check valve 4 is in the open state, and the pressure oil in back oil pocket 132 is by rear cover oil
Hole 61, rear two-position three-way valve 8 and two position four-way valves 10 back into fuel tank 3, and the compression area of system pressure P is (D1 2-d2+ D2 2) ×
π reaches maximum, and thrust reaches maximum.
The thrust that the present invention passes through 1 compression area regulating piston column 1 of regulating piston column.When if necessary to pressure, according to F=P
× S, in mono- timings of system pressure P, fluid compression area S is bigger, and thrust F is bigger, and present invention utilizes 1 inside of piston rod is logical
The mode of oil increases compression area, increased compression area Δ S=D2 2× π/4, the gross area are S=(D1 2-d2+ D2 2) ×π/
4, to achieve the purpose that increase thrust, increased thrust Δ F=D2 2× π × P/4, gross thrust are F=(D1 2-d2+ D2 2) ×
π×P /4。
The present invention can also be by adjusting oil pocket volume V0Carry out 1 movement speed v of regulating piston column.It is moved due to piston boit 1
Time t is the time that pressure oil is filled with oil pocket, and the flow q such as charged pressure oil is certain, and 1 stroke L of piston boit is certain, then t=L/
v=V0/ q, therefore can obtain, v=（Lq）/V0, to improve v, in thrust F=(D of piston boit 11 2-d2Situation enough) × π × P/4
Under, by regulating piston column diameter to adjust oil pocket volume, by adjusting oil pocket volume come regulating piston column movement speed, and
Oil pocket volume is reduced, makes d close to D1, piston boit 1 can be made to achieve the effect that high-speed mobile.Piston column diameter and oil pocket are straight
Ratio between diameter presses the design of pressure that actual thrust needs.
In above-mentioned formula, D1For oil pocket diameter, D2For the diameter of preceding vessel 111 and rear vessel 112, d is the straight of piston boit 1
Diameter.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Claiming etc. can be different, described in this specification above content is only to structure of the invention example explanation.It is all according to
The equivalence changes or simple change done according to the structure, feature and principle described in inventional idea of the present invention, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do described specific embodiment various
The modify or supplement or adopt similar mode of various kinds substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (5)
1. a kind of high speed and high pressure converts cylinder system, including oil cylinder and oil supply system；Oil cylinder includes piston boit, oil cylinder front cover, oil
Cylinder rear cover and cylinder body；Oil cylinder front cover and oil cylinder rear cover are separately mounted to the rear and front end of cylinder body；Oil is provided in cylinder body
Chamber, piston boit are slidably mounted in oil pocket, and oil pocket is divided into front oil pocket and back oil pocket by the seal on piston boit；Oil supply system
Including control valve group fuel tank and oil pump；It is characterized in that：Protecgulum oilhole is provided in oil cylinder front cover, after being provided in oil cylinder rear cover
Lid oilhole, protecgulum oilhole are connected to front oil pocket, and rear cover oilhole is connected to back oil pocket；The front of piston boit is provided with preceding vessel, after
Portion is provided with rear vessel；There is preceding vessel oil inlet and outlet, the oil outlet of preceding vessel to be connected to front oil pocket, and preceding vessel goes out
Hydraulic fluid port is equipped with preceding check valve；There is vessel oil inlet and outlet, the oil outlet of rear vessel to be connected to back oil pocket afterwards, rear vessel
Oil outlet rear check valve is installed；The oil supply system further includes control valve group, and protecgulum oilhole passes through control valve group and oil
Pump is connected with fuel tank, and rear cover oilhole is connect by control valve group with oil pump and fuel tank, and the oil inlet of preceding vessel passes through control valve group
It is connect with oil pump, the oil inlet of rear vessel is connect by control valve group with oil pump.
2. high speed and high pressure according to claim 1 converts cylinder system, it is characterised in that：Before the control valve group includes
Two-position three-way valve, rear two-position three-way valve and two position four-way valves；The oil inlet with protecgulum oilhole and preceding vessel respectively of front two triple valve
Mouth connection；Two-position three-way valve is connect with the oil inlet of rear cover oilhole and rear vessel respectively afterwards；Two position four-way valves respectively with front two
Triple valve, rear two-position three-way valve, oil pump, fuel tank connection.
3. high speed and high pressure according to claim 1 converts cylinder system, it is characterised in that：The oil cylinder further includes end
Plate；The front and rear of piston boit is respectively fixed with end plate, and end plate seals preceding vessel and rear vessel；The oil inlet of preceding vessel and
The oil inlet of vessel is arranged on corresponding end plate afterwards.
4. the adjusting side of high speed and high pressure conversion the cylinder system thrust and speed described in a kind of claim 1-3 any claims
Method, it is characterised in that：Process is as follows：
（1）, when oil cylinder action direction be march forward after action make when, oil pump feed；Control valve group acts, oil pump and rear cover oil
Hole is connected, and protecgulum oilhole is connected with fuel tank, and pressure oil enters back oil pocket from rear cover oilhole, and rear check valve is closed, living
Stick harness moves from the front to the back；And the pressure oil in front oil pocket backs into fuel tank by protecgulum oilhole；When needing high thrust, control valve
Group action, oil pump are connected with the oil inlet of rear vessel, and pressure oil enters rear vessel from the oil inlet of rear vessel, and rear check valve is in
Opening state, and the pressure oil in front oil pocket backs into fuel tank by protecgulum oilhole；
（2）, when oil cylinder action direction be from the front to the back when acted when, oil pump feed；Control valve group acts, oil pump and protecgulum
Oilhole is connected, and rear cover oilhole is connected with fuel tank, and pressure oil enters front oil pocket from protecgulum oilhole, and preceding check valve is closed,
Piston boit moves from the front to the back；And back oil pocket pressure oil backs into fuel tank by rear cover oilhole；When needing high thrust, control valve group
Action, oil pump are connected with the oil inlet of preceding vessel, and pressure oil enters preceding vessel from the oil inlet of preceding vessel, and preceding check valve is in and beats
Open state, and the pressure oil in back oil pocket backs into fuel tank by rear cover oilhole.
5. adjusting method according to claim 1, it is characterised in that：In the above process, enough in the thrust of piston boit
In the case of, by regulating piston column diameter to adjust oil pocket volume, speed is moved come regulating piston column by adjusting oil pocket volume
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196564.5A CN108386408B (en) | 2018-03-09 | 2018-03-09 | High-speed high-pressure conversion oil cylinder system and thrust and speed adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196564.5A CN108386408B (en) | 2018-03-09 | 2018-03-09 | High-speed high-pressure conversion oil cylinder system and thrust and speed adjusting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108386408A true CN108386408A (en) | 2018-08-10 |
| CN108386408B CN108386408B (en) | 2023-09-08 |
Family
ID=63067534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810196564.5A Active CN108386408B (en) | 2018-03-09 | 2018-03-09 | High-speed high-pressure conversion oil cylinder system and thrust and speed adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386408B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56113807A (en) * | 1979-12-29 | 1981-09-08 | Kayaba Ind Co Ltd | Hydraulic piston-and-cylinder |
| JPH0552308U (en) * | 1991-12-17 | 1993-07-13 | 小松フォークリフト株式会社 | Cylinder device |
| JPH10153229A (en) * | 1996-11-21 | 1998-06-09 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| CN201031829Y (en) * | 2007-04-30 | 2008-03-05 | 张介民 | Compound oil cylinder cylinder rod operation gear changes |
| CN101649851A (en) * | 2009-09-04 | 2010-02-17 | 无锡智航控制技术有限公司 | Force balance type electric cylinder featuring fluid circulation |
| CN202560686U (en) * | 2012-05-29 | 2012-11-28 | 常州海宏液压设备有限公司 | Long-stroke buffering cylinder |
| CN202707665U (en) * | 2012-05-30 | 2013-01-30 | 山西高行液压股份有限公司 | Variable-speed oil cylinder |
| CN103047224A (en) * | 2012-12-27 | 2013-04-17 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Leakage measurement system |
| CN104863922A (en) * | 2015-05-29 | 2015-08-26 | 大连宏远气动液压船舶辅机有限公司 | Speed changing/regulating hydraulic cylinder device |
| CN106640839A (en) * | 2017-03-21 | 2017-05-10 | 上海布拓传动***设备有限公司 | Oil cylinder with quick release function |
| CN106939910A (en) * | 2017-04-22 | 2017-07-11 | 新乡市新倍增自动化设备有限公司 | A kind of Electrical hydrostatic actuator single rod symmetrical hydraulic cylinder at a high speed |
| CN208089646U (en) * | 2018-03-09 | 2018-11-13 | 浙江申达机器制造股份有限公司 | High speed and high pressure converts cylinder system |
-
2018
- 2018-03-09 CN CN201810196564.5A patent/CN108386408B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56113807A (en) * | 1979-12-29 | 1981-09-08 | Kayaba Ind Co Ltd | Hydraulic piston-and-cylinder |
| JPH0552308U (en) * | 1991-12-17 | 1993-07-13 | 小松フォークリフト株式会社 | Cylinder device |
| JPH10153229A (en) * | 1996-11-21 | 1998-06-09 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| CN201031829Y (en) * | 2007-04-30 | 2008-03-05 | 张介民 | Compound oil cylinder cylinder rod operation gear changes |
| CN101649851A (en) * | 2009-09-04 | 2010-02-17 | 无锡智航控制技术有限公司 | Force balance type electric cylinder featuring fluid circulation |
| CN202560686U (en) * | 2012-05-29 | 2012-11-28 | 常州海宏液压设备有限公司 | Long-stroke buffering cylinder |
| CN202707665U (en) * | 2012-05-30 | 2013-01-30 | 山西高行液压股份有限公司 | Variable-speed oil cylinder |
| CN103047224A (en) * | 2012-12-27 | 2013-04-17 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Leakage measurement system |
| CN104863922A (en) * | 2015-05-29 | 2015-08-26 | 大连宏远气动液压船舶辅机有限公司 | Speed changing/regulating hydraulic cylinder device |
| CN106640839A (en) * | 2017-03-21 | 2017-05-10 | 上海布拓传动***设备有限公司 | Oil cylinder with quick release function |
| CN106939910A (en) * | 2017-04-22 | 2017-07-11 | 新乡市新倍增自动化设备有限公司 | A kind of Electrical hydrostatic actuator single rod symmetrical hydraulic cylinder at a high speed |
| CN208089646U (en) * | 2018-03-09 | 2018-11-13 | 浙江申达机器制造股份有限公司 | High speed and high pressure converts cylinder system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108386408B (en) | 2023-09-08 |
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