CN106762946B - 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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- CN106762946B CN106762946B CN201611253382.4A CN201611253382A CN106762946B CN 106762946 B CN106762946 B CN 106762946B CN 201611253382 A CN201611253382 A CN 201611253382A CN 106762946 B CN106762946 B CN 106762946B
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- 239000007788 liquid Substances 0.000 claims abstract description 56
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 239000003921 oil Substances 0.000 claims description 108
- 238000007789 sealing Methods 0.000 claims description 22
- 239000010727 cylinder oil Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (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 seals, piston second seals, plug, air filter, oil pipe, gasket, hollow screw, articulated joint, oil tube bracket and liquid level sensor etc.；A kind of single-action hydraulic cylinder shown with internal leakage proposed by the present invention, liquid level sensor is mounted in the side of single-action hydraulic cylinder inoperative chamber, the liquid level position sensed by liquid level sensor, and liquid level position data are transferred to peripheral equipment, it is shown and is alarmed, grasp the internal leakage situation of single-action hydraulic cylinder in time.If liquid level is higher by certain position, the fluid of single-action hydraulic cylinder inoperative intracavitary is discharged by drain line, 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 cylinders, 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 is only there are one the cavity of resorption participation of working chamber participation work, such as single-action hydraulic cylinder, 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, for certain some important process place, for example, nuclear power station etc., such case is absolute into external leakage
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 liquid level sensor, by liquid level sensor sense liquid level position, and liquid level position data be transferred to outside
Peripheral equipment is shown and is alarmed, and grasps the internal leakage situation of single-action hydraulic cylinder in time.If liquid level is higher by certain position,
The fluid of single-action hydraulic cylinder inoperative intracavitary is discharged by drain line, prevents fluid external leakage.
The content of the invention
It is an object of the invention to provide a kind of single-action hydraulic cylinders 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, plug, air filtration
Device, oil pipe, gasket, hollow screw, articulated joint, oil tube bracket and liquid level sensor；The cylinder body is in U shape, described
The lower part of cylinder body offers that hydraulic cylinder oil inlet, hydraulic cylinder first leads to oil circuit and hydraulic cylinder second leads to oil circuit, the hydraulic cylinder into
Hydraulic fluid port is located at the side wall of cylinder body, and hydraulic cylinder oil inlet, hydraulic cylinder first leads to oil circuit and hydraulic cylinder second leads to oil circuit and cylinder interior
It is connected, forms " L " type access；The upper end cover is made of mounting flange, cylinder and upper cover plate, mounting flange, cylinder and on
Cover board is welded into the upper end cover of an entirety from bottom to up, and the left lower of the cylinder, which offers, extends radially through the second of cylinder
Threaded hole, the right upper portion of cylinder offer the first threaded hole for extending radially through cylinder, and the lower right side of cylinder, which is welded with, drains the oil
It manages, the 3rd threaded hole axially penetrated through is offered inside drain line；The oil tube bracket carries central through hole, and oil tube bracket is fixed
Mounted on the left side central 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；The lower end of the oil pipe and the upper end sealing welding of articulated joint are integral, the welding body of oil pipe and articulated joint
It is inserted into and by the central through hole of oil tube bracket, hollow screw insertion and by the centre bore of articulated joint, is screwed into from the top down
Second threaded hole of cylinder is installed along with articulated joint together with oil pipe the left side of cylinder, hollow screw, articulated joint, cylinder
Corresponding sealing is installed, also, the second threaded hole, hollow screw first leads to oil circuit, hollow screw between the left side outer wall of body
Second logical oil circuit, annular oil cavity, oil circuit is led in articulated joint and the endoporus of oil pipe is interconnected；The liquid level sensor is mounted on oil
The upper end of pipe, and the position of oil pipe inner fluid liquid level can be sensed；The air filter is mounted on the of cylinder right upper portion
In one threaded hole；The plug is mounted on the right end of drain line；The circumferential direction of the piston is equipped with piston first and seals and piston
Second sealing；The piston and piston rod are combined into one, and mounted on the inside of cylinder body, piston is together with piston rod, piston the
One sealing 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
Lid is securedly mounted to the upper end of cylinder body by screw, is equipped with gasket between upper end cover and cylinder body, and piston rod is from upper end cover
Upper cover plate centre bore is pierced by, and the lower end of spring pushes against the upper surface of piston, and the upper end of spring pushes against the lower surface of upper cover plate, piston
Lower surface and cylinder body U shape lower inside between form hydraulic cylinder cavity of resorption, on the upper surface of piston and the inside of cylinder body
Hydraulic cylinder epicoele is formed between side and the inside of cylinder, under the action of the spring, initial position is in cylinder for piston and piston rod
The inside bottom of 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, and piston and piston rod is promoted to eject upwards, is acted on
Outer load, if the sealing of piston first and piston second are sealed up and down there are micro-leakage, the fluid of leakage passes 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 oil pipe is led in annular oil cavity, articulated joint, at this time in oil pipe
Liquid level it is identical with the liquid level of intracavitary on hydraulic cylinder, the liquid level position in oil pipe is can sense when by liquid level sensor
It puts, and liquid level position data is transferred to peripheral equipment, shown and alarmed, grasp the internal leakage of single-action hydraulic cylinder in time
Situation.If the liquid level of intracavitary is higher by certain position on hydraulic cylinder, by unscrewing plug, the fluid in hydraulic cylinder epicoele is discharged,
The liquid level of intracavitary on hydraulic cylinder is prevented to be higher by the first threaded hole, generates fluid external leakage；When the oil liquid pressure of hydraulic cylinder cavity of resorption is released
After putting, the active force of spring promotes piston and piston rod to retract downwards, and the fluid of hydraulic cylinder cavity of resorption passes through hydraulic cylinder cavity of resorption, liquid
Cylinder pressure first leads to the outside oil extraction of oil circuit, hydraulic cylinder oil inlet.
The plug can be substituted with shut-off valve；
Seal assembly is installed between the plug and cylinder.
The beneficial effects of the invention are as follows：
The present invention proposes a kind of single-action hydraulic cylinder shown with internal leakage, in the side of single-action hydraulic cylinder inoperative chamber
It is mounted with liquid level sensor, the liquid level position sensed by liquid level sensor, and liquid level position data are transferred to peripheral equipment,
It is shown and is alarmed, grasp the internal leakage situation of single-action hydraulic cylinder in time.If liquid level is higher by certain position, by draining the oil
Pipe discharges the fluid of single-action hydraulic cylinder inoperative intracavitary, prevents fluid external leakage.
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.
Specific 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, plug 9, air filtration
Device 10, oil pipe 11, gasket 13, hollow screw 16, articulated joint 17, oil tube bracket 18 and liquid level sensor 19；The cylinder body 1
In U shape, the lower part of the cylinder body 1 offers hydraulic cylinder oil inlet 1-1, hydraulic cylinder first and leads to oil circuit 1-2 and hydraulic cylinder
Two-way oil circuit 1-3, hydraulic cylinder oil inlet 1-1 are located at the side wall of cylinder body 1, and hydraulic cylinder oil inlet 1-1, hydraulic cylinder first leads to oil circuit 1-
2 lead to oil circuit 1-3 and are connected inside cylinder body 1 with hydraulic cylinder second, form " L " type access；The upper end cover 3 is by mounting flange 3-
1st, cylinder 3-2 and upper cover plate 3-3 compositions, mounting flange 3-1, cylinder 3-2 and upper cover plate 3-3 are welded into an entirety from bottom to up
Upper end cover 3, the left lower of the cylinder 3-2 offers the second threaded hole 3-7 for extending radially through cylinder, the right side of cylinder 3-2
Upper lateral part offers the first threaded hole 3-4 for extending radially through cylinder, and the lower right side of cylinder 3-2 is welded with drain line 3-5, drains the oil
The 3rd threaded hole 3-6 axially penetrated through is offered inside pipe 3-5；The oil tube bracket 18 carries central through hole, oil tube bracket 18
It is fixedly mounted on the left side central portion of cylinder 3-2；Offered inside the hollow screw 16 hollow screw first lead to oil circuit 16-2 and
Hollow screw second leads to oil circuit 16-1；Annular oil cavity 17-1 is offered inside the articulated joint 17 and oil circuit is led in articulated joint
17-2, oil circuit 17-2 is led in articulated joint and annular oil cavity 17-1 is interconnected；The lower end of the oil pipe 11 and articulated joint 17
Upper end sealing welding is integral, and the welding body of oil pipe 11 and articulated joint 17 is inserted into and is passed through in oil tube bracket 18 from the top down
Heart through hole, hollow screw 16 are inserted into and pass through the centre bore of articulated joint 17, are screwed into the second threaded hole 3-7 of cylinder 3-2, hinge
Connector 17 is installed along with the left side of cylinder 3-2, hollow screw 16, articulated joint 17, the left side of cylinder 3-2 together with oil pipe 11
Corresponding sealing is installed, also, the second threaded hole 3-7, hollow screw first lead to oil circuit 16-2, hollow screw between outer wall
Two-way oil circuit 16-1, annular oil cavity 17-1, oil circuit 17-2 is led in articulated joint and the endoporus of oil pipe 11 is interconnected；The liquid level passes
Sensor 19 is mounted on the upper end of oil pipe 11, and can sense the position of 11 inner fluid liquid level of oil pipe；The air filter 10 is pacified
In the first threaded hole 3-4 of cylinder 3-2 right upper portions；The plug 9 is mounted on the right end of drain line 3-5；The piston 4
Circumferential direction be equipped with piston first sealing 7 and piston second sealing 8；The piston 4 and piston rod 5 are combined into one, and are installed
In the inside of cylinder body 1, piston 4 can be in the inside of cylinder body 1 together with piston rod 5, the sealing of piston first 7 and the sealing of piston second 8
It moves up and down；The spring 6 is sleeved on piston rod 5；The upper end cover 3 is securedly mounted to the upper end of cylinder body 1 by screw 2,
Gasket 13 is installed, piston rod 5 is pierced by from the upper cover plate 3-3 centre bores of upper end cover 3, spring 6 between upper end cover 3 and cylinder body 1
Lower end push against the upper surface of piston 4, the upper end of spring 6 pushes against the lower surface of upper cover plate 3-3, the lower surface of piston 4 and cylinder body 1
U shape lower inside between form hydraulic cylinder cavity of resorption 12, the upper surface of piston 4 and the inner upper of cylinder body 1 and cylinder 3-
Hydraulic cylinder epicoele 15 is formed between 2 inside, under the action of spring 6, initial position is in cylinder body 1 for piston 4 and piston rod 5
Inside bottom.
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 3-7, fluid leads to
Cross the second threaded hole 3-7, 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 oil pipe 11, at this time the liquid level in the liquid level and hydraulic cylinder epicoele 15 in oil pipe 11
It is highly identical, the liquid level position in oil pipe 11 can sense when by liquid level sensor 19, and liquid level position data are transferred to
Peripheral equipment is shown and is alarmed, and grasps the internal leakage situation of single-action hydraulic cylinder in time.If in hydraulic cylinder epicoele 15
Liquid level is higher by certain position, by unscrewing plug 9, discharges the fluid in hydraulic cylinder epicoele 15, prevents in hydraulic cylinder epicoele 15
Liquid level is higher by the first threaded hole 3-4, generates fluid external leakage；After the oil liquid pressure release of hydraulic cylinder cavity of resorption 12, the work of spring 6
Firmly, piston 4 and piston rod 5 is promoted to retract downwards, the fluid of hydraulic cylinder cavity of resorption 12 passes through hydraulic cylinder cavity of resorption 12, hydraulic cylinder first
Logical oil circuit 1-2, the outside oil extractions of hydraulic cylinder oil inlet 1-1.
Preferably, above-mentioned plug 9 can be substituted with shut-off valve；
Preferably, seal assembly is installed between above-mentioned plug 9 and cylinder 3-2.
The present invention proposes a kind of single-action hydraulic cylinder shown with internal leakage, in the side of single-action hydraulic cylinder inoperative chamber
It is mounted with liquid level sensor, the liquid level position sensed by liquid level sensor, and liquid level position data are transferred to peripheral equipment,
It is shown and is alarmed, grasp the internal leakage situation of single-action hydraulic cylinder in time.If liquid level is higher by certain position, by draining the oil
Pipe discharges 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 (3)
1. a kind of 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）、
Plug（9）, air filter（10）, oil pipe（11）, gasket（13）, hollow screw（16）, articulated joint（17）, oil tube bracket
（18）And liquid level sensor（19）；The cylinder body（1）In U shape, the cylinder body（1）Lower part offer hydraulic cylinder oil inlet
Mouthful（1-1）, hydraulic cylinder first lead to oil circuit（1-2）Lead to oil circuit with hydraulic cylinder second（1-3）, the hydraulic cylinder oil inlet（1-1）Position
In cylinder body（1）Side wall, hydraulic cylinder oil inlet（1-1）, hydraulic cylinder first lead to oil circuit（1-2）Lead to oil circuit with hydraulic cylinder second（1-
3）It sequentially connects, and hydraulic cylinder second leads to oil circuit（1-3）Again with cylinder body（1）Inside is connected, and forms " L " type access；It is described
Upper end cover（3）By mounting flange（3-1）, cylinder（3-2）And upper cover plate（3-3）Composition, mounting flange（3-1）, cylinder（3-2）With
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 footpath
To the second threaded hole through cylinder（3-7）, cylinder（3-2）Right upper portion offer the first threaded hole for extending radially through cylinder
（3-4）, cylinder（3-2）Lower right side be welded with drain line（3-5）, drain line（3-5）Inside offers axially penetrated through
Three threaded holes（3-6）；The oil tube bracket（18）With central through hole, oil tube bracket（18）It is fixedly mounted on cylinder（3-2）'s
Left side central portion；The hollow screw（16）Inside offers hollow screw first and leads to oil circuit（16-2）With the logical oil of hollow screw second
Road（16-1）；The articulated joint（17）Inside offers annular oil cavity（17-1）Lead to oil circuit with articulated joint（17-2）, it is hinged
Connector leads to oil circuit（17-2）And annular oil cavity（17-1）It is interconnected；The oil pipe（11）Lower end and articulated joint（17）It is upper
Hold sealing welding integral, oil pipe（11）And articulated joint（17）Welding body be inserted into from the top down and pass through oil tube bracket（18）
Central through hole, hollow screw（16）It is inserted into and passes through articulated joint（17）Centre bore, be screwed into cylinder（3-2）The second screw thread
Hole（3-7）, articulated joint（17）Together with oil pipe（11）It is installed along with cylinder（3-2）Left side, hollow screw（16）, it is hinged
Connector（17）, cylinder（3-2）Left side outer wall between corresponding sealing, also, the second threaded hole are installed（3-7）, hollow spiral shell
The logical oil circuit of nail first（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 oil pipe（11）Endoporus be interconnected；The liquid level sensor（19）Mounted on oil pipe（11）Upper end, and can sense
Oil pipe（11）The position of inner fluid liquid level；The air filter（10）Mounted on cylinder（3-2）First screw thread of right upper portion
Hole（3-4）It is interior；The plug（9）Mounted on drain line（3-5）Right end；The piston（4）Circumferential direction piston first is installed
Sealing（7）It is sealed with piston second（8）；The piston（4）And piston rod（5）It is combined into one, and mounted on cylinder body（1）It is interior
Portion, piston（4）Together with piston rod（5）, piston first seals（7）It is sealed with piston second（8）It can be in cylinder body（1）Inside on
Lower movement；The spring（6）It is sleeved on piston rod（5）On；The upper end cover（3）Pass through the first screw（2）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 cover（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 formed hydraulic cylinder cavity of resorption（12）,
Piston（4）Upper surface and cylinder body（1）Inner upper and cylinder（3-2）Inside between formed hydraulic cylinder epicoele（15）, it is living
Plug（4）And piston rod（5）In spring（6）Under the action of, initial position is in cylinder body（1）Inside bottom.
2. a kind of single-action hydraulic cylinder shown with internal leakage according to claim 1, it is characterised in that：The plug
（9）It is substituted with shut-off valve.
3. a kind of single-action hydraulic cylinder shown with internal leakage according to claim 1, it is characterised in that：The plug
（9）And cylinder（3-2）Between seal assembly is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253382.4A CN106762946B (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 |
|---|---|---|---|
| CN201611253382.4A CN106762946B (en) | 2016-12-30 | 2016-12-30 | A kind of single-action hydraulic cylinder shown with internal leakage |
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| Publication Number | Publication Date |
|---|---|
| CN106762946A CN106762946A (en) | 2017-05-31 |
| CN106762946B true CN106762946B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN112284943A (en) * | 2020-11-12 | 2021-01-29 | 沈阳仪表科学研究院有限公司 | Guarantee mechanism of bellows fatigue test device |
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| CN202441672U (en) * | 2012-02-20 | 2012-09-19 | 蚌埠液力机械有限公司 | Inner leakage detection tool for hydraulic oil cylinder |
| CN104006029A (en) * | 2014-05-12 | 2014-08-27 | 天津优瑞纳斯液压机械有限公司 | Hydraulic cylinder with oil leakage detection structure |
| CN105465101A (en) * | 2014-10-23 | 2016-04-06 | 徐州重型机械有限公司 | Internal leakage detection equipment and device for hydraulic oil cylinder |
| CN204783957U (en) * | 2015-07-08 | 2015-11-18 | 武汉科技大学 | Embedded pneumatic cylinder of automatic monitoring internal leakage |
| CN105257618A (en) * | 2015-11-10 | 2016-01-20 | 浙江大学 | Closed oil film visualization device capable of measuring leakage of reciprocating sealing piston |
| CN205117897U (en) * | 2015-11-20 | 2016-03-30 | 常州海宏液压设备有限公司 | Freeze dryer hydraulic cylinder with leak measurement function a little |
| CN205117896U (en) * | 2015-11-20 | 2016-03-30 | 常州海宏液压设备有限公司 | In -band leak testing's entry driving machine props boots hydraulic cylinder |
| CN105526210A (en) * | 2016-01-13 | 2016-04-27 | 中南大学 | Method and device for measuring micro inner leakage amount of any stroke position of hydraulic cylinder |
| CN105526210B (en) * | 2016-01-13 | 2017-09-19 | 中南大学 | A kind of small internal leakage measuring method in hydraulic cylinder arbitrary distance of run position and its device |
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Denomination of invention: A single acting hydraulic cylinder with internal leakage display Effective date of registration: 20220107 Granted publication date: 20180518 Pledgee: Industrial Bank Co.,Ltd. Shanghai pilot Free Trade Zone Lingang New District sub branch Pledgor: SHANGHAI XIONGCHENG MARINE ENGINEERING CO.,LTD. Registration number: Y2022980000225 |
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Date of cancellation: 20230128 Granted publication date: 20180518 Pledgee: Industrial Bank Co.,Ltd. Shanghai pilot Free Trade Zone Lingang New District sub branch Pledgor: SHANGHAI XIONGCHENG MARINE ENGINEERING CO.,LTD.|SHANGHAI XIONGCHENG SHIP ENGINEERING Co.,Ltd. Registration number: Y2022980000225 |
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Denomination of invention: A single-acting hydraulic cylinder with internal leakage display Effective date of registration: 20230201 Granted publication date: 20180518 Pledgee: Industrial Bank Co.,Ltd. Shanghai pilot Free Trade Zone Lingang New District sub branch Pledgor: SHANGHAI XIONGCHENG MARINE ENGINEERING CO.,LTD.|SHANGHAI XIONGCHENG SHIP ENGINEERING Co.,Ltd. Registration number: Y2023310000019 |