CN105465096A - Hydraulic oil cylinder - Google Patents
Hydraulic oil cylinder Download PDFInfo
- Publication number
- CN105465096A CN105465096A CN201511014090.0A CN201511014090A CN105465096A CN 105465096 A CN105465096 A CN 105465096A CN 201511014090 A CN201511014090 A CN 201511014090A CN 105465096 A CN105465096 A CN 105465096A
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- cylinder body
- hydraulic jack
- annular
- 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.)
- Pending
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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
- 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
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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
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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
- F15B15/1438—Cylinder to end cap assemblies
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- 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
- F15B15/1461—Piston rod sealings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The invention discloses a hydraulic oil cylinder which comprises a cylinder body, an end cover, a guide cover, a piston and a piston rod. The end cover and the guide cover are arranged at the two ends of the cylinder body respectively, the piston is movably connected with the interior of the cylinder body, and the piston rod is connected with the piston. An annular step is arranged at the end, connected with the piston, of the piston rod, an annular groove is formed in the annular step, and the piston is arranged on the annular step in a sleeving manner and clamped to the annular groove. A concave step is arranged on the piston, a valve is mounted in the concave step, a strip-shaped through hole is formed in the valve, and the valve operates along with the piston. When the valve collides with the end cover and the guide cover in the movement process, the function of an overflow valve is achieved. The valve with the simple structure is mounted on the piston, so that when the oil cylinder collides with the end cover and the guide cover in the movement process, the Xeikon valve can achieve the function of the overflow valve, and a system is protected. A plurality of sealing rings are arranged, so that the sealing performance of the whole hydraulic oil cylinder is guaranteed. A clamping spring is arranged, so that mounting is facilitated.
Description
Technical field
The present invention relates to oil cylinder equipment, particularly relate to a kind of hydraulic jack.
Background technique
Hydraulic energy is changed into mechanical energy, does the hydraulic actuator of straight reciprocating motion (or oscillating motion) by oil hydraulic cylinder.Its structure is simple, reliable operation.When realizing to-and-fro motion with it, can speed reducer be removed from, and there is no drive gap, stable movement, therefore be used widely in the hydraulic system of various machinery.The pressure reduction on oil hydraulic cylinder ouput force and piston effective area and both sides thereof is directly proportional; Oil hydraulic cylinder is made up of cylinder barrel and cylinder cap, piston and piston rod, seal arrangement, damping device and venting gas appliance substantially.Damping device and venting gas appliance are depending on embody rule occasion, and other devices are then essential.
Oil cylinder is the main parts of engineering machinery, and traditional processing method is: broaching cylinder body---right boring cylinder body---grinding cylinder body.Employing rolling depression method is: broaching cylinder body---right boring cylinder body---roll extrusion cylinder body, and operation is 3 parts, but time upper contrast: grinding cylinder body 1 meter is general the time of 1-2 days, and roll extrusion cylinder body 1 meter is probably the time of 10-30 minute.Drop into contrast: grinding machine or hone machine (several ten thousand---millions of), rolling depression cutter (1,000---several ten thousand).After roll extrusion, hole surface roughness is rolled front Ra3.2 ~ 6.3um by building and is reduced to Ra0.4 ~ 0.8 & um, and the surface hardness in hole improves about 30%, and cylinder barrel internal surface fatigue strength improves 25%.If working life only considered that cylinder barrel affects by oil cylinder, improve 2 ~ 3 times, boring rolling technology comparatively grinding process efficiency improves about 3 times.Above data illustrate, rolling technology is efficient, greatly can improve the surface quality of cylinder barrel.
In recent years, along with the high speed development of economic construction, in engineering machinery, manufacturing mechanism and automobile industry get more and more to the demand of the hydraulic jack of high standard, high-performance and high safety performance.The oil cylinder of relief valve function is needed to there is circuit structure design complexity in the market, and when there are quality problems in any one element, potential safety hazard can be produced to whole pressurized oil system, for some long-term action and the high equipment of quality requirement, these relief valve function oil cylinders to be met the need of market.
Mainly there is following problem in the hydraulic jack of prior art: the first, the cylinder movement system of prior art, needs to reach overflow effect and protective system needs supporting pressure transducer; Position limit switch, the components such as solenoid valve; The second, the cylinder movement system of prior art, if pressure transducer and any one inefficacy of position limit switch, the oil cylinder of whole moving system operationally, can not obtain controlled, produce potential safety hazard or the system of damage to whole plant machinery; Three, the cylinder movement system of prior art is due to supporting pressure transducer; Position limit switch, the components such as solenoid valve, whole manufacture cost and volume will increase, and install and operation time-consuming.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of hydraulic jack is provided, reach good flushing effect, and structure is simple, produce and maintenance cost low.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of hydraulic jack, the piston rod comprising cylinder body, be located at the end cap at cylinder body two ends respectively and lead lid, be movably connected on the piston in cylinder body and be connected with piston, one end that described piston rod is connected with piston is provided with ring-shaped step, ring-shaped step is provided with annular groove, and described piston sleeve to be loaded on ring-shaped step and to be connected on annular groove.
As preferred embodiment of the present invention, piston of the present invention is arranged concave station rank, in concave station rank, a valve is installed, described valve arranges a long strip through hole, valve runs together along with piston, when valve is encountered end cap at the volley and led lid, carries out overflow action.
As preferred embodiment of the present invention, lid of leading of the present invention arranges concave station rank near the one end outside cylinder body, cylinder body arranges the annular groove corresponding with concave station rank, clamps an annular spring between concave station rank and annular groove.
As preferred embodiment of the present invention, of the present invention lead to cover annular seal groove is set, set gradually an O type circle and an annular retaining ring in annular seal groove.
As preferred embodiment of the present invention, lid of leading of the present invention arranges annular seal groove near the side of piston rod, arranges U-shaped circle in annular seal groove.
As preferred embodiment of the present invention, the opening of lid near outside of leading of the present invention arranges annular groove, arranges a dust ring in annular groove.
As preferred embodiment of the present invention, piston of the present invention arranges annular seal groove, in annular seal groove, seal ring is set.
As preferred embodiment of the present invention, piston of the present invention is arranged concave station rank, in concave station rank, a valve is installed, described valve arranges a long strip through hole, valve runs together along with piston, when valve is encountered end cap at the volley and led lid, plays relief valve effect.
As preferred embodiment of the present invention, the position that piston of the present invention is corresponding with annular groove arranges a through hole, and through hole internal fixtion arranges a Cock screw, and piston is fixedly connected with by Cock screw with piston rod.
As preferred embodiment of the present invention, the arranged outside oil through of cylinder body of the present invention, oil through is arranged oil stifled.
As preferred embodiment of the present invention, cylinder body of the present invention and end cap are welded to connect, and cylinder body is locked by locking nut with leading to cover.
Compared with prior art, the invention has the beneficial effects as follows: on piston, install a simple valve of structure (such as matching health valve), when making its oil cylinder encounter end cap at the volley and lead lid, match health valve will play relief valve effect, protect system; One end that described piston rod is connected with piston is provided with ring-shaped step, and ring-shaped step is provided with annular groove, and described piston sleeve to be loaded on ring-shaped step and to be connected on annular groove, piston is connected more fastening with piston rod; Multiple seal ring is set, ensures the sealing of whole hydraulic jack, and a jump ring is set, convenient installation.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is overall structure side view of the present invention;
Fig. 3 is working state schematic representation one of the present invention;
Fig. 4 is working state schematic representation two of the present invention;
Fig. 5 is working state schematic representation three of the present invention;
Fig. 6 is working state schematic representation four of the present invention;
Fig. 7 is working state schematic representation five of the present invention.
Embodiment
Purport of the present invention is to overcome the deficiencies in the prior art, provides a kind of hydraulic jack, reaches the effect preventing overflow preferably, and structure is simple, good airproof performance.Be described in detail, to be interpretated more in-depth technical characteristics of the present invention and advantage with reference to accompanying drawing below in conjunction with embodiment.
Overall structure schematic diagram of the present invention as shown in Figure 1, 2, a kind of hydraulic jack, the piston rod 5 comprising cylinder body 17, be located at the end cap 13 at cylinder body two ends respectively and lead lid 6, be movably connected on the piston 1 in cylinder body 17 and be connected with piston 1, one end that described piston rod 5 is connected with piston 1 is provided with ring-shaped step 16, ring-shaped step is provided with annular groove 15, and described piston 1 to be set on ring-shaped step 16 and to be connected on annular groove 15.By arranging ring-shaped step 16 and annular groove 15, making piston 1 be connected more fastening with piston rod 5, assembling up more convenient.In addition, cylinder body of the present invention 17 and end cap 13 are welded to connect, cylinder body 17 with lead lid 6 and be locked by locking nut 11.
The cylinder movement system of prior art, needs to reach overflow effect and protective system needs supporting pressure transducer; Position limit switch; the components such as solenoid valve; unlike the prior art; piston 1 of the present invention arranges concave station rank 14, and install a valve in concave station rank 14, described valve arranges a long strip through hole; valve runs together along with piston; when valve is encountered end cap at the volley and led lid, play relief valve effect, system is protected.Such as valve is match health valve, is loaded on above piston, match health valve has a long strip through hole by a match health valve; match health valve runs together along with piston; when matching health valve and encountering end cap at the volley and lead lid, match health valve will play relief valve effect, protect system.
Preferably, lid 6 one end outside cylinder body 17 of leading of the present invention arranges concave station rank 18, cylinder body 17 arranges the annular groove 19 corresponding with concave station rank 18, clamps an annular spring 10 between concave station rank 18 and annular groove 19.By arranging annular spring 10, when piston and piston rod movement, space has certain extensibility, is conducive to increasing the service life.
As shown in Figure 1, of the present invention leading on lid 6 arranges annular seal groove, sets gradually O type circle 7 and an annular retaining ring 8, reach good sealing effect in annular seal groove.Described lid 6 of leading arranges annular seal groove near the side of piston rod 5, arranges U-shaped circle 9, reach good sealing effect in annular seal groove.The described opening of lid 6 near outside of leading arranges annular groove, arranges a dust ring 12, reach good dust-proof effect in annular groove.
Be not easy to occur leak case in order to ensure piston 1 end, piston 1 of the present invention arrange annular seal groove, seal ring 2 is set in annular seal groove.
In order to reach fastening and installation effect preferably, the position that piston 1 of the present invention is corresponding with annular groove 15 arranges a through hole, and through hole internal fixtion arranges a Cock screw 4, and piston 1 is fixedly connected with by Cock screw 4 with piston rod 5.
As hydraulic jack of the present invention, the arranged outside oil through 3 of cylinder body 17 of the present invention, oil through is arranged oil stifled, carries out turnover oil and pressure import and export.
As shown in Figure 3, relief valve oil cylinder can use the solid-state circuit such as timer and solenoid valve (without position limit switch, without pressure switch) to realize automatic circulating system to working state schematic representation one of the present invention.Whole automatic cycling operating all can not reach system maximum pressure (pressure maximum=load+friction), like this can not to oil cylinder excessive wear and mechanical wear.Oil temperature can not be caused to raise fast.
As shown in Figure 4, during valve closing, valve can play leak free effect to working state schematic representation two of the present invention, and now high pressure enters from the oil through near the one end of leading lid 6, flows back to mailbox from the oil through of the one end near end cap 13.
As shown in Figure 5, during valve open, now high pressure enters from the oil through near the one end of leading lid 6 working state schematic representation three of the present invention, flows out from the oil through low pressure of the one end near end cap 13.
Working state schematic representation four of the present invention as shown in Figure 6, valve closing, valve No leakage state, high pressure from the inflow of one end near end cap 13, then near the oil through oil sump tank of one end of leading lid 6.
Working state schematic representation five of the present invention as shown in Figure 7, valve open, high voltage terminal carries out overflow by valve, high pressure from the inflow of one end near end cap 13, then near the low pressure earial drainage of one end of leading lid 6.
Carry out clear, complete description by the technological scheme in above embodiment to the present invention, obviously described embodiment is the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Claims (10)
1. a hydraulic jack, it is characterized in that: the piston rod (5) comprising cylinder body (17), be located at the end cap (13) at cylinder body two ends respectively and lead lid (6), be movably connected on the piston (1) in cylinder body (17) and be connected with piston (1), the upper one end be connected with piston (1) of described piston rod (5) is provided with ring-shaped step (16), ring-shaped step is provided with annular groove (15), and described piston (1) is set in ring-shaped step (16) and goes up and be connected on annular groove (15).
2. hydraulic jack according to claim 1, it is characterized in that: described piston (1) is arranged concave station rank (14), in concave station rank (14), a valve is installed, described valve arranges a long strip through hole, valve runs together along with piston, when valve is encountered end cap at the volley and led lid, carry out overflow action.
3. hydraulic jack according to claim 1, it is characterized in that: described in lead lid (6) near cylinder body (17) outside one end one concave station rank (18) are set, cylinder body (17) is upper arranges the annular groove (19) corresponding with concave station rank (18), clamps an annular spring (10) between concave station rank (18) and annular groove (19).
4. hydraulic jack according to claim 3, is characterized in that: described in lead on lid (6) annular seal groove be set, set gradually an O type circle (7) and an annular retaining ring (8) in annular seal groove.
5. hydraulic jack according to claim 4, is characterized in that: described in lead lid (6) annular seal groove be set near the side of piston rod (5), U-shaped circle (9) is set in annular seal groove.
6. hydraulic jack according to claim 5, is characterized in that: described in lead lid (6) annular groove be set near the opening in outside, a dust ring (12) is set in annular groove.
7. hydraulic jack according to claim 1, is characterized in that: (1) arranges annular seal groove to described piston, arranges seal ring (2) in annular seal groove.
8. hydraulic jack according to claim 7, it is characterized in that: the position that described piston (1) is corresponding with annular groove (15) arranges a through hole, through hole internal fixtion arranges a Cock screw (4), and piston (1) is fixedly connected with by Cock screw (4) with piston rod (5).
9. the hydraulic jack according to any one of claim 1-8, is characterized in that: the arranged outside oil through (3) of described cylinder body (17), oil through is arranged oil stifled.
10. the hydraulic jack according to any one of claim 1-8, is characterized in that: described cylinder body (17) and end cap (13) are welded to connect, and cylinder body (17) is covered (6) and is locked by locking nut (11) with leading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014090.0A CN105465096A (en) | 2015-12-31 | 2015-12-31 | Hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014090.0A CN105465096A (en) | 2015-12-31 | 2015-12-31 | Hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105465096A true CN105465096A (en) | 2016-04-06 |
Family
ID=55603150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511014090.0A Pending CN105465096A (en) | 2015-12-31 | 2015-12-31 | Hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286478A (en) * | 2016-10-08 | 2017-01-04 | 苏州威尔特铝合金升降机械有限公司 | Column type overhead operation platform hydraulic cylinder relief arrangement |
| CN109477755A (en) * | 2016-07-19 | 2019-03-15 | 日本精工株式会社 | The Weight measurement device of vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391501Y (en) * | 2009-03-26 | 2010-01-27 | 济南东奥自控技术有限公司 | Buffering hydraulic cylinder |
| CN201401390Y (en) * | 2009-04-22 | 2010-02-10 | 浙江华昌液压机械有限公司 | Hydrocylinder buffering device |
| CN203441861U (en) * | 2013-08-21 | 2014-02-19 | 东莞积信制造有限公司 | Hydraulic cylinder |
| WO2015159443A1 (en) * | 2014-04-14 | 2015-10-22 | Smc株式会社 | Fluid pressure cylinder |
| CN205578394U (en) * | 2015-12-31 | 2016-09-14 | 东莞积信制造有限公司 | Hydraulic oil cylinder |
-
2015
- 2015-12-31 CN CN201511014090.0A patent/CN105465096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391501Y (en) * | 2009-03-26 | 2010-01-27 | 济南东奥自控技术有限公司 | Buffering hydraulic cylinder |
| CN201401390Y (en) * | 2009-04-22 | 2010-02-10 | 浙江华昌液压机械有限公司 | Hydrocylinder buffering device |
| CN203441861U (en) * | 2013-08-21 | 2014-02-19 | 东莞积信制造有限公司 | Hydraulic cylinder |
| WO2015159443A1 (en) * | 2014-04-14 | 2015-10-22 | Smc株式会社 | Fluid pressure cylinder |
| CN205578394U (en) * | 2015-12-31 | 2016-09-14 | 东莞积信制造有限公司 | Hydraulic oil cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477755A (en) * | 2016-07-19 | 2019-03-15 | 日本精工株式会社 | The Weight measurement device of vehicle |
| CN106286478A (en) * | 2016-10-08 | 2017-01-04 | 苏州威尔特铝合金升降机械有限公司 | Column type overhead operation platform hydraulic cylinder relief arrangement |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |
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| RJ01 | Rejection of invention patent application after publication |