CN106837917B - A kind of single-action hydraulic cylinder shown with internal leakage - Google Patents
A kind of single-action hydraulic cylinder shown with internal leakage Download PDFInfo
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- CN106837917B CN106837917B CN201611254019.4A CN201611254019A CN106837917B CN 106837917 B CN106837917 B CN 106837917B CN 201611254019 A CN201611254019 A CN 201611254019A CN 106837917 B CN106837917 B CN 106837917B
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- cylinder
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- hydraulic cylinder
- oil circuit
- cylinder body
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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
- F15B15/1428—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
- F15B15/1423—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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of single-action hydraulic cylinder shown with internal leakage, including cylinder body, the first screw, the second screw, upper end cover, piston, piston rod, spring, piston first seal, piston second seals, sebific duct stent, air filter, transparent hose, gasket, hollow screw and articulated joint etc.；A kind of single-action hydraulic cylinder shown with internal leakage proposed by the present invention, transparent hose is mounted with the side of single-action hydraulic cylinder inoperative chamber, when the sealing in single-acting hydraulic the cylinder piston, there are micro-leakage, the internal leakage situation of single-action hydraulic cylinder can be grasped by the liquid level position observed in transparent hose, if liquid level is higher by certain position, the fluid of single-action hydraulic cylinder inoperative intracavitary is discharged by transparent hose, prevents fluid external leakage.The configuration of the present invention is simple, reliable operation, can grasp the internal leakage situation of single-action hydraulic cylinder, prevent fluid external leakage, be with a wide range of applications.
Description
Technical field
The present invention relates to a kind of hydraulic cylinder, and in particular to a kind of single-action hydraulic cylinder shown with internal leakage, belongs to electricity
Gas and field of electromechanical technology.
Background technology
At present, hydraulic cylinder is widely used in numerous areas, for double acting hydraulic cylinder, since lower work chamber is all joined
With work, the micro-leakage inside hydraulic cylinder, does not interfere with the normal work of hydraulic cylinder；It is living for single-action hydraulic cylinder
The stretching of plug and piston rod, dependence is that promoting for high-voltage oil liquid realizes that retracting needs to realize by external force, such as spring
Power etc., since single-action hydraulic cylinder only has a working chamber to participate in work, for example the cavity of resorption of single-action hydraulic cylinder participates in, if living
Sealing beyond the Great Wall is there are micro-leakage, and into the epicoele of single-action hydraulic cylinder, the meeting of single-action hydraulic cylinder epicoele is constantly gathered, most
End form pollutes working environment into external leakage, for certain some important process place, such as, nuclear power station etc., such case is absolute
Do not allow, so, the present invention proposes a kind of single-action hydraulic cylinder shown with internal leakage, in single-action hydraulic cylinder inoperative chamber
Side be mounted with transparent hose, hollow screw, articulated joint and sebific duct stent, by observing the liquid level position in transparent hose
The internal leakage situation of single-action hydraulic cylinder can be grasped, if liquid level is higher by certain position, nonoculture is discharged by transparent hose
With the fluid of hydraulic cylinder inoperative intracavitary, the liquid level height for preventing hydraulic cylinder inoperative intracavitary to a certain extent, produces fluid and leaks
Leakage.
The content of the invention
It is an object of the invention to provide a kind of single-action hydraulic cylinder shown with internal leakage.
The technical solution adopted by the present invention is：A kind of single-action hydraulic cylinder shown with internal leakage, including cylinder body, the first spiral shell
Nail, the second screw, upper end cover, piston, piston rod, spring, piston first seal, piston second seals, sebific duct stent, air mistake
Filter, transparent hose, gasket, hollow screw and articulated joint；The cylinder body is in U shape, and the lower part of the cylinder body opens up
Have that hydraulic cylinder oil inlet, hydraulic cylinder first leads to oil circuit and hydraulic cylinder second leads to oil circuit, the hydraulic cylinder oil inlet is located at cylinder body
Side wall, hydraulic cylinder oil inlet, hydraulic cylinder first leads to oil circuit and lead to oil circuit with hydraulic cylinder second to be connected with cylinder interior, is formed " L "
Type path；The upper end cover is made of mounting flange, cylinder and upper cover plate, and mounting flange, cylinder and upper cover plate weld from bottom to up
The upper end cover of an entirety is connected into, the left lower of the cylinder offers the second threaded hole for extending radially through cylinder, cylinder
Right upper portion offers the first threaded hole for extending radially through cylinder；The sebific duct stent carries central through hole, and sebific duct stent is fixed
Installed in the left upper portion of cylinder；Hollow screw first is offered inside the hollow screw, and to lead to oil circuit and hollow screw second logical
Oil circuit；Annular oil cavity is offered inside the articulated joint and oil circuit is led in articulated joint, oil circuit and annular oil cavity are led in articulated joint
It is interconnected；Hollow screw insertion and by the centre bore of articulated joint, is screwed into the second threaded hole of cylinder, hingedly connecing
Head be installed on cylinder left side, hollow screw, articulated joint, cylinder left side outer wall between corresponding sealing is installed；It is described
The lower end of the top insertion transparent hose of articulated joint, forms and is tightly connected；The top insertion sebific duct stent of the transparent hose
Central through hole, transparent hose reliably be installed on cylinder left side, also, the second threaded hole, hollow screw first lead to oil circuit, in
Empty screw second leads to oil circuit, annular oil cavity, oil circuit is led in articulated joint and the endoporus of transparent hose is interconnected；The air filtration
Device is installed in the first threaded hole of cylinder right upper portion；The circumferential direction of the piston is provided with the sealing of piston first and piston second
Sealing；The piston and piston rod are combined into one, and close together with piston rod, piston first installed in the inside of cylinder body, piston
Envelope and the sealing of piston second can be moved up and down in the inside of cylinder body；The spring pocket dress is on the piston rod；The upper end cover leads to
The first screw and the second screw, the upper end for being securedly mounted to cylinder body are crossed, gasket, piston rod are installed between upper end cover and cylinder body
It is pierced by from the upper cover plate centre bore of upper end cover, the lower end of spring pushes against the upper surface of piston, and the upper end of spring pushes against upper cover plate
Lower surface, forms hydraulic cylinder cavity of resorption between the lower surface of piston and the lower inside of cylinder body, the upper surface of piston and cylinder body
Between U shape inner upper and the inside of cylinder formed hydraulic cylinder epicoele, piston and piston rod under the action of the spring, its
Initial position is in the inside bottom of cylinder body.
When high-voltage oil liquid leads to oil circuit and hydraulic cylinder second leads to oil circuit by hydraulic cylinder oil inlet, hydraulic cylinder first, into liquid
Cylinder pressure cavity of resorption, acts on the lower surface of piston, overcomes the active force of spring, promotes piston and piston rod to eject upwards, acts on
Outer load, if the sealing of piston first and piston second seal, there are micro-leakage, the fluid of leakage up and down to pass through piston first
Sealing and piston second seal, and from bottom to top, into hydraulic cylinder epicoele, get off for a long time, the fluid of hydraulic cylinder epicoele progressively accumulates
Poly-, fluid liquid level constantly rises, and when fluid liquid level is higher than the second threaded hole, fluid passes through the second threaded hole, hollow screw the
One logical oil circuit, hollow screw second lead to oil circuit, the endoporus that oil circuit enters transparent hose is led in annular oil cavity, articulated joint, at this time thoroughly
Liquid level in gelatin tube is identical with the liquid level of intracavitary on hydraulic cylinder, by observing the liquid level position in transparent hose,
The internal leakage situation of single-action hydraulic cylinder can be grasped, if the liquid level of intracavitary is higher by certain position on hydraulic cylinder, transparent
The top of sebific duct is extracted from the central through hole of sebific duct stent, slightly unscrews hollow screw, rotates articulated joint to horizontal level, and
Fluid in hydraulic cylinder epicoele is discharged by transparent hose, prevents the liquid level of intracavitary on hydraulic cylinder to be higher by the first threaded hole, is produced
Fluid external leakage；After the oil liquid pressure release of hydraulic cylinder cavity of resorption, the active force of spring, promotes piston and piston rod to move back downwards
Return, the fluid of hydraulic cylinder cavity of resorption leads to the outside oil extraction of oil circuit, hydraulic cylinder oil inlet by hydraulic cylinder cavity of resorption, hydraulic cylinder first.
The transparent hose can be the transparent pipe of other materials.
The beneficial effects of the invention are as follows：
, can be by observing the liquid level position in transparent hose using the single-action hydraulic cylinder shown with internal leakage of the present invention
The internal leakage situation of single-action hydraulic cylinder can be grasped by putting, if liquid level is higher by certain position, be discharged by transparent hose single
The fluid of acting cylinder inoperative intracavitary, prevents fluid external leakage.
Brief description of the drawings
The embodiment provided below in conjunction with the accompanying drawings is described in more detail the present invention.
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the partial enlarged view of A in Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, a kind of single-action hydraulic cylinder shown with internal leakage, including cylinder body 1, the first screw 2, second
Screw 14, upper end cover 3, piston 4, piston rod 5, spring 6, the sealing of piston first 7, the sealing of piston second 8, sebific duct stent 9, air
Filter 10, transparent hose 11, gasket 13, hollow screw 16 and articulated joint 17；The cylinder body 1 is in U shape, described
The lower part of cylinder body 1 offers that hydraulic cylinder oil inlet 1-1, hydraulic cylinder first leads to oil circuit 1-2 and hydraulic cylinder second leads to oil circuit 1-3, liquid
Cylinder pressure oil inlet 1-1, hydraulic cylinder first lead to oil circuit 1-2 and lead to oil circuit 1-3 with hydraulic cylinder second and be connected inside cylinder body 1, are formed
" L " type path；The upper end cover 3 is made of mounting flange 3-1, cylinder 3-2 and upper cover plate 3-3, mounting flange 3-1, cylinder 3-2
It is welded into the upper end cover 3 of an entirety from bottom to up with upper cover plate 3-3, the left lower of the cylinder 3-2, which offers, radially to be passed through
The second threaded hole 3-5 of cylinder is worn, the right upper portion of cylinder 3-2 offers the first threaded hole 3-4 for extending radially through cylinder；It is described
Sebific duct stent 9 carries central through hole, and sebific duct stent 9 is fixedly mounted on the left upper portion of cylinder 3-2；Inside the hollow screw 16
Offer that hollow screw first leads to oil circuit 16-2 and hollow screw second leads to oil circuit 16-1；Offered inside the articulated joint 17
Oil circuit 17-2 is led in annular oil cavity 17-1 and articulated joint, and oil circuit 17-2 is led in articulated joint and annular oil cavity 17-1 is interconnected；Institute
State hollow screw 16 to be inserted into and by the centre bore of articulated joint 17, be screwed into the second threaded hole 3-5 of cylinder 3-2, hingedly connecing
First 17 are installed on the left side of cylinder 3-2, hollow screw 16, articulated joint 17, cylinder 3-2 left side outer wall between be provided with it is corresponding
Sealing；The lower end of the top insertion transparent hose 11 of the articulated joint 17, forms and is tightly connected；The transparent hose 11
The central through hole of top insertion sebific duct stent 9, transparent hose 11 are reliably installed on the left side of cylinder 3-2, also, the second threaded hole
3-5, hollow screw first leads to that oil circuit 16-2, hollow screw second leads to oil circuit 16-1, oil circuit is led in annular oil cavity 17-1, articulated joint
The endoporus of 17-2 and transparent hose 11 is interconnected；The air filter 10 is installed on the first spiral shell of cylinder 3-2 right upper portions
In pit 3-4；The circumferential direction of the piston 4 is provided with the sealing of piston first 7 and the sealing of piston second 8；The piston 4 and piston rod
5 are combined into one, and installed in the inside of cylinder body 1, piston 4 is together with piston rod 5, the sealing of piston first 7 and the sealing of piston second 8
It can be moved up and down in the inside of cylinder body 1；The spring 6 is sleeved on piston rod 5；The upper end cover 3 passes through 2 He of the first screw
Second screw 14 is securedly mounted to the upper end of cylinder body 1, is provided with gasket 13 between upper end cover 3 and cylinder body 1, and piston rod 5 is from upper
The upper cover plate 3-3 centre bores of end cap 3 are pierced by, and the lower end of spring 6 pushes against the upper surface of piston 4, and the upper end of spring 6 pushes against upper cover plate
The lower surface of 3-3, forms hydraulic cylinder cavity of resorption 12, piston 4 between the lower surface of piston 4 and the U shape lower inside of cylinder body 1
Upper surface and the inner upper of cylinder body 1 and the inside of cylinder 3-2 between form hydraulic cylinder epicoele 15, piston 4 and piston rod 5 exist
Under the action of spring 6, its initial position is in the inside bottom of cylinder body 1.
When high-voltage oil liquid leads to oil circuit 1-2 and hydraulic cylinder second leads to oil circuit 1- by hydraulic cylinder oil inlet 1-1, hydraulic cylinder first
3, into hydraulic cylinder cavity of resorption 12, act on the lower surface of piston 4, overcome the active force of spring 6, promote piston 4 and piston rod 5 to
Upper ejection, acts on outer load, if there are micro-leakage, the oil of leakage for the sealing of piston first 7 and the sealing of piston second about 8
Liquid seals 8 by the sealing of piston first 7 and piston second, from bottom to top, into hydraulic cylinder epicoele 15, gets off for a long time, hydraulic pressure
The fluid of cylinder epicoele 15 progressively gathers, and fluid liquid level constantly rises, and when fluid liquid level is higher than the second threaded hole 3-5, fluid leads to
Cross the second threaded hole 3-5, hollow screw first leads to oil circuit 16-2, hollow screw second and leads to oil circuit 16-1, annular oil cavity 17-1, hinge
Connector leads to the endoporus that oil circuit 17-2 enters transparent hose 11, at this time the liquid level in transparent hose 11 and hydraulic cylinder epicoele 15
Interior liquid level is identical, by observing the liquid level position in transparent hose 11, it is possible to grasps the interior of single-action hydraulic cylinder and lets out
Leakage situation, if the liquid level in hydraulic cylinder epicoele 15 is higher by certain position, the top of transparent hose 11 from sebific duct stent 9
Heart through hole is extracted, and slightly unscrews hollow screw 16, rotates articulated joint 17 to horizontal level, and pass through 11 release liquid of transparent hose
Fluid in cylinder pressure epicoele 15, prevents the liquid level in hydraulic cylinder epicoele 15 to be higher by the first threaded hole 3-4, produces fluid external leakage；
After the oil liquid pressure release of hydraulic cylinder cavity of resorption 12, the active force of spring 6, promotes piston 4 and piston rod 5 to retract downwards, hydraulic pressure
The fluid of cylinder cavity of resorption 12 leads to oil circuit 1-2, the outside oil extractions of hydraulic cylinder oil inlet 1-1 by hydraulic cylinder cavity of resorption 12, hydraulic cylinder first.
Preferably, above-mentioned transparent hose 11 can be the transparent pipe of other materials.
A kind of single-action hydraulic cylinder shown with internal leakage provided by the invention, can be by observing the liquid in transparent hose
Face position can grasp the internal leakage situation of single-action hydraulic cylinder, if liquid level is higher by certain position, penetrating gelatin tube release
The fluid of single-action hydraulic cylinder inoperative intracavitary, prevents fluid external leakage.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (1)
- A kind of 1. single-action hydraulic cylinder shown with internal leakage, it is characterised in that：Including cylinder body（1）, the first screw（2）, second Screw（14）, upper end cover（3）, piston（4）, piston rod（5）, spring（6）, piston first seals（7）, piston second seals（8）、 Sebific duct stent（9）, air filter（10）, transparent hose（11）, gasket（13）, hollow screw（16）And articulated joint （17）；The cylinder body（1）In U shape, the cylinder body（1）Lower part offer hydraulic cylinder oil inlet（1-1）, hydraulic cylinder One logical oil circuit（1-2）Lead to oil circuit with hydraulic cylinder second（1-3）, the hydraulic cylinder oil inlet（1-1）Positioned at cylinder body（1）Side wall, Hydraulic cylinder oil inlet（1-1）, hydraulic cylinder first lead to oil circuit（1-2）, hydraulic cylinder second lead to oil circuit（1-3）And cylinder body（1）Internal phase Connection, forms " L " type path；The upper end cover（3）By mounting flange（3-1）, cylinder（3-2）And upper cover plate（3-3）Composition, peace Fill flange（3-1）, cylinder（3-2）And upper cover plate（3-3）The upper end cover of an entirety is welded into from bottom to up（3）, the cylinder （3-2）Left lower offer the second threaded hole for extending radially through cylinder（3-5）, cylinder（3-2）Right upper portion offer Extend radially through the first threaded hole of cylinder（3-4）；The sebific duct stent（9）With central through hole, sebific duct stent（9）It is fixedly mounted In cylinder（3-2）Left upper portion；The hollow screw（16）Inside offers hollow screw first and leads to oil circuit（16-2）With in Empty screw second leads to oil circuit（16-1）；The articulated joint（17）Inside offers annular oil cavity（17-1）Lead to oil with articulated joint Road（17-2）, articulated joint leads to oil circuit（17-2）And annular oil cavity（17-1）It is interconnected；The hollow screw（16）Insertion is simultaneously Pass through articulated joint（17）Centre bore, be screwed into cylinder（3-2）The second threaded hole（3-5）, articulated joint（17）It is installed on Cylinder（3-2）Left side, hollow screw（16）, articulated joint（17）, cylinder（3-2）Left side outer wall between be provided with it is corresponding Sealing；The articulated joint（17）Top insertion transparent hose（11）Lower end, formed be tightly connected；The transparent hose （11）Top insertion sebific duct stent（9）Central through hole, transparent hose（11）Reliably it is installed on cylinder（3-2）Left side, and And second threaded hole（3-5）, hollow screw first lead to oil circuit（16-2）, hollow screw second lead to oil circuit（16-1）, annular oil cavity （17-1）, articulated joint lead to oil circuit（17-2）And transparent hose（11）Endoporus be interconnected；The air filter（10）Peace Mounted in cylinder（3-2）First threaded hole of right upper portion（3-4）It is interior；The piston（4）Circumferential direction piston first be installed seal （7）Sealed with piston second（8）；The piston（4）And piston rod（5）It is combined into one, and is installed on cylinder body（1）Inside, Piston（4）Together with piston rod（5）, piston first seals（7）Sealed with piston second（8）Can be in cylinder body（1）Inside above and below It is mobile；The spring（6）It is sleeved on piston rod（5）On；The upper end cover（3）Pass through the first screw（2）With the second screw（14） It is securedly mounted to cylinder body（1）Upper end, upper end cover（3）And cylinder body（1）Between gasket is installed（13）, piston rod（5）From upper End cap（3）Upper cover plate（3-3）Centre bore is pierced by, spring（6）Lower end push against piston（4）Upper surface, spring（6）Upper end Push against upper cover plate（3-3）Lower surface, piston（4）Lower surface and cylinder body（1）U shape lower inside between form liquid Cylinder pressure cavity of resorption（12）, piston（4）Upper surface and cylinder body（1）Inner upper and cylinder（3-2）Inside between form hydraulic pressure Cylinder epicoele（15）, piston（4）And piston rod（5）In spring（6）Under the action of, its initial position is in cylinder body（1）Inside most Lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254019.4A CN106837917B (en) | 2016-12-30 | 2016-12-30 | A kind of single-action hydraulic cylinder shown with internal leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254019.4A CN106837917B (en) | 2016-12-30 | 2016-12-30 | A kind of single-action hydraulic cylinder shown with internal leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837917A CN106837917A (en) | 2017-06-13 |
| CN106837917B true CN106837917B (en) | 2018-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611254019.4A Active CN106837917B (en) | 2016-12-30 | 2016-12-30 | A kind of single-action hydraulic cylinder shown with internal leakage |
Country Status (1)
| Country | Link |
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| CN (1) | CN106837917B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900007212A1 (en) * | 2019-05-24 | 2020-11-24 | L T E Lift Truck Equipment S P A | FORKLIFT. |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3683756B2 (en) * | 1999-10-12 | 2005-08-17 | カヤバ工業株式会社 | Leak measuring instrument |
| CN102128186A (en) * | 2011-03-24 | 2011-07-20 | 莱芜钢铁股份有限公司 | Water and air double-cooled hydraulic cylinder |
| CN202125485U (en) * | 2011-05-27 | 2012-01-25 | 深圳市新劲力机械有限公司 | Hydraulic cylinder end cap device |
| CN202251231U (en) * | 2011-09-08 | 2012-05-30 | 江阴市长龄机械制造有限公司 | Hydraulic cylinder end cover |
| CN204164084U (en) * | 2014-10-30 | 2015-02-18 | 安徽五洋机床制造有限公司 | A kind of oil cylinder for hydraulic press brakes |
| CN205001278U (en) * | 2015-06-23 | 2016-01-27 | 张家港市金桥轻工机械有限公司 | Hydraulic cylinder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004212152A (en) * | 2002-12-27 | 2004-07-29 | Tamura Electric Works Ltd | Leakage inspection device and pump used therefor |
| SG178553A1 (en) * | 2009-08-25 | 2012-03-29 | Carrier Corp | Method and apparatus to indicate activation of pressure relief device |
-
2016
- 2016-12-30 CN CN201611254019.4A patent/CN106837917B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3683756B2 (en) * | 1999-10-12 | 2005-08-17 | カヤバ工業株式会社 | Leak measuring instrument |
| CN102128186A (en) * | 2011-03-24 | 2011-07-20 | 莱芜钢铁股份有限公司 | Water and air double-cooled hydraulic cylinder |
| CN202125485U (en) * | 2011-05-27 | 2012-01-25 | 深圳市新劲力机械有限公司 | Hydraulic cylinder end cap device |
| CN202251231U (en) * | 2011-09-08 | 2012-05-30 | 江阴市长龄机械制造有限公司 | Hydraulic cylinder end cover |
| CN204164084U (en) * | 2014-10-30 | 2015-02-18 | 安徽五洋机床制造有限公司 | A kind of oil cylinder for hydraulic press brakes |
| CN205001278U (en) * | 2015-06-23 | 2016-01-27 | 张家港市金桥轻工机械有限公司 | Hydraulic cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106837917A (en) | 2017-06-13 |
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Effective date of registration: 20200811 Address after: No.11, Kele Road, Xinbei District, Changzhou City, Jiangsu Province, 213000 Patentee after: GATES HYDRAULIC TECHNOLOGY (CHANGZHOU) Co.,Ltd. Address before: 213022 Jiangsu, North District, Changzhou Jin Ling North Road, No. 200 Patentee before: CHANGZHOU CAMPUS OF HOHAI University |
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