CN102889264A - Hydraulic cylinder with magnetic control antifriction structure - Google Patents
Hydraulic cylinder with magnetic control antifriction structure Download PDFInfo
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- CN102889264A CN102889264A CN 201210397246 CN201210397246A CN102889264A CN 102889264 A CN102889264 A CN 102889264A CN 201210397246 CN201210397246 CN 201210397246 CN 201210397246 A CN201210397246 A CN 201210397246A CN 102889264 A CN102889264 A CN 102889264A
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Abstract
The invention discloses a hydraulic cylinder with a magnetic control antifriction structure and belongs to a hydraulic cylinder for engineering machinery. According to the hydraulic cylinder, six rectangular grooves which are uniformly distributed along the axis are respectively formed on two end faces of a piston; electromagnets are arranged in the grooves; the electromagnets are sealed and fixed by using elastic materials; and antifriction coatings are arranged on two sides of the piston. After the electromagnets embedded to the end faces of the piston are electrified, a constant magnetic field is generated, and the surface of the metal piston and the inner wall of the cylinder barrel are magnetized. The magnetic field accelerate the formation of an oxide layer on the metal surface, the strength of the surface of friction pair is improved due to the increment of an oxidation protection layer, and the lubricating property is improved, so that the wearing capacity is reduced and the friction coefficient is reduced. In addition, lots of worn fines between the inner wall and the piston are adsorbed by the magnetic field, an isolating function is realized, direct contact between the inner wall and the piston is avoided, and the functions of reducing the adhesion and micro-cutting force and relieving local stress are realized.
Description
Technical field
The present invention relates to the hydraulic jack that engineering machinery is used, specifically a kind of hydraulic jack with magnetic control friction-reducing structure.
Background technique
In engineering machinery, the Environmental Conditions of oil hydraulic cylinder is more abominable, and the load change that oil hydraulic cylinder bears is complicated, so the problem such as in use in the past, pulling in the cylinder appears in oil hydraulic cylinder easily, piston wear and oil hydraulic cylinder are creeped.These problems mainly are because the frictional force of piston and inner wall of cylinder causes.
Present stage solves in the cylinder and pulls, the main method of piston wear and the problem such as creep all is to go to reduce the roughness of oil cylinder inner wall by mach method, to reach the purpose of the power size of reducing friction, as the cylinder tube internal surface is adopted rolling technology, make the oil cylinder inner wall surface not have sharp small cutting edge and the special-purpose assembly tool of employing to assemble to guarantee the fit tolerance of piston and inner wall of cylinder.But said method length consuming time, the technological process trouble is had relatively high expectations to workman's technical merit, and comprehensive cost of production is high.
In recent years, by studies have shown that the friction and wear behavior of metal significantly improves in magnetic field, and method is simple, and pollution-free, using effect is remarkable.Especially the magnetic of electromagnet has or not and can be controlled by the break-make of electric current, and magnetic force can be controlled by size of current, and the polarity of magnetic pole can the characteristic such as control by changing sense of current, has obtained application multi-field.The present invention just improves to reduce and inner wall of cylinder frictional force to the hydraulic cylinder piston structure on this basis, thereby effectively reduces scuffing, piston wear and the crawling problems of oil hydraulic cylinder inwall.
Summary of the invention
The invention provides is a kind of hydraulic jack with magnetic control friction-reducing structure, adopts this oil hydraulic cylinder can effectively reduce scuffing, piston wear and the crawling problems of oil hydraulic cylinder inwall, further improves the anti-wear and wear-resistant performance of oil hydraulic cylinder, increases the working life of oil hydraulic cylinder.
The present invention realizes with following technological scheme: a kind of oil cylinder comprises cylinder body, cylinder top, cylinder bottom, lower hydraulic fluid port and upper hydraulic fluid port, elastic material, piston, electromagnet, piston rod, seal ring and sealed filling material; Cylinder bottom and cylinder top are fixed by screws in the two ends of cylinder body, after one end of piston rod passes cylinder top electromagnet, an end that is positioned at the piston rod of cylinder body is equipped with piston, two end faces of piston respectively have 6 along the uniform rectangular recess of axis, place electromagnet in the groove, electromagnet is sealed and fix with elastic material, and place the damping coating on the piston two sides.Piston rod cylndrical surface axial surface has groove, and the embedded electromagnet wire of piston is drawn outside the cylinder body by groove, is filled with sealed filling material in the groove, and cylinder body rodless cavity and cylinder body rod chamber arrange respectively lower hydraulic fluid port and upper hydraulic fluid port.
Principle of the present invention is to produce constant magnetic field, magnetizable metal piston face and inner wall of cylinder after utilizing the electromagnet energising that is embedded in piston end surface.Because the formation of oxidation on metal surface layer can be accelerated in magnetic field, and the increase of oxide protective layer has increased the intensity of surface of friction pair, improved simultaneously greasy property, wear extent reduction and friction factor are reduced.The wearing and tearing fines of a large amount of inwalls and piston has been adsorbed in magnetic field in addition, plays buffer action, has stoped both direct contacts, reaches the effect that reduces adhesion, micro-cutting and alleviation localized stress.
The present invention has the following advantages:
(1) the present invention is applicable to low, middle compressing cylinder, simple in structure flexibly, Placement and the structure of cylinder block, cylinder top and cylinder bottom do not had specific limited.Can make up with all kinds of cylinder structures, needn't change the oil cylinder original structure, be widely used, make things convenient for.
(2) pull and the piston wear problem in the minimizing cylinder, the present invention is by adding the stationary magnetic field to the rubbing surface periphery, and the magnetizable metal contact surface significantly reduces the frictional force of surface of contact, effectively prolongs the life-span of piston, has delayed the time of piston wear.Simultaneously, the inboard wall of cylinder block surface is under the effect in magnetic field, and surface ion is arranged again, and surface oxide layer accelerates to form, and the formation of surface oxide layer has increased the intensity of inboard wall of cylinder block rubbing surface, can effectively prevent the generation of pulling in the cylinder.
(3) effectively alleviate creeping phenomenon.The main cause of oil hydraulic cylinder creeping phenomenon is that piston and inwall frictional force are excessive.After piston and inboard wall of cylinder block are magnetized among the present invention, the frictional force of both surface of contact reduces, and adopt the electromagnet structure controlling magnetic field, contactless, piston end surface covers the damping coating simultaneously, can effectively reduce the vibrations that fluid extruding produces, thereby the effective low speed jerking motion phenomenon of relieving hydraulic cylinder.
(4) effectively control oil contamination.The abrasive dust that piston and inboard wall of cylinder block friction produce because the existence in magnetic field can be suspended in contact surface, plays the effect of solid lubricant, and can not sneak in the fluid, causes the pollution of fluid, the working life of covert raising hydraulic system.
Description of drawings
Fig. 1 is equipped with magnetic control anti-abrasion structure hydraulic jack principle schematic;
Fig. 2 is A-A view of the present invention;
Fig. 3 is magnetic control anti-abrasion structure principle schematic of the present invention.
Among the figure: 1, screw, 2, cylinder bottom, 3, lower hydraulic fluid port, 4, piston, 5, seal ring, 6, the damping coating, 7, cylinder body, 8, upper hydraulic fluid port, 9, the cylinder top, 10, screw, 11, piston rod, 12, electromagnet, 13, elastic material, 14, the electromagnet wire, 15, groove, 16, sealed filling material; 16 sealed filling materials.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As depicted in figs. 1 and 2, the present invention includes cylinder body 7, cylinder top 9, cylinder bottom 2, lower hydraulic fluid port 3 and upper hydraulic fluid port 8, electromagnet 12 and elastic material 13, piston 4, seal ring 5, piston rod 11 and sealed filling material 16; Cylinder bottom 2 and cylinder top 9 are fixed on the two ends of cylinder body 7 by screw 1, screw 10, after one end of piston rod 11 passes cylinder top 9, an end that is positioned at the piston rod 11 of cylinder body is equipped with piston 4,4 two end faces of piston respectively have 6 along the uniform rectangular recess of axis, place electromagnet 12 in the groove, seal and fix with 13 pairs of electromagnet 12 of elastic material, and place damping coating 6 on piston 4 two sides.Piston rod 11 cylndrical surface axial surfaces have groove 15, and piston 4 embedded electromagnet wires 14 are drawn outside the cylinder body 7 by groove 15, are filled with sealed filling material 16 in the groove 15, and cylinder body 7 rodless cavities and cylinder body 7 rod chambers arrange respectively lower hydraulic fluid port 3 and upper hydraulic fluid port 8.
As shown in Figure 3, electromagnet 12 coils are according to winding shown in Figure 3, and according to current direction energising shown in Figure 3, the magnetic direction that the assurance electromagnet produces is identical, so that piston 4 and cylinder body 7 inwalls are by uniform magnetization.Abrasive dust is affected by magnetic fields to be suspended between piston 4 and the cylinder body 7 inwall surface of contact, and the effect of serving as solid lubricant in surface of contact further reduces friction factor and the wear extent of two surface of contact.
When hydraulic cylinder works, at first 12 energisings of the electromagnet in the circuit control piston 4, piston 4 surfaces and cylinder body 7 inwall surface of contact are magnetized in magnetic field.When hydraulic oil liquid driven plunger 4 and when piston rod 11 is shunk, oil pump is opened upper hydraulic fluid port 8 oil-feed liquid, lower hydraulic fluid port 3 drainings.When hydraulic oil liquid driven plunger 4 and when piston rod 11 is stretched, oil pump is opened lower hydraulic fluid port 3 oil-feed liquid, upper hydraulic fluid port 8 drainings.
Claims (2)
1. the hydraulic jack with magnetic control friction-reducing structure comprises cylinder body (7), cylinder top (9), cylinder bottom (2), lower hydraulic fluid port (3) and upper hydraulic fluid port (8), piston (4), seal ring (5), piston rod (11) and sealed filling material (16); Cylinder bottom (2) and cylinder top (9) are fixed on the two ends of cylinder body (7) by screw (1), screw (10), after one end of piston rod (11) passed cylinder top (9), an end that is positioned at the piston rod (11) of cylinder body was equipped with piston (4); It is characterized in that, (4) two end faces of piston respectively have 6 along the uniform rectangular recess of axis, place electromagnet (12) in the groove, electromagnet (12) is sealed and fix with elastic material (13), and be placed with damping coating (6) on piston (4) two sides.
2. a kind of hydraulic jack with magnetic control friction-reducing structure according to claim 1, it is characterized in that, described piston rod (11) cylndrical surface axial surface has groove (15), the embedded electromagnet wire 14 of piston (4) is drawn outside the cylinder body (7) by groove (15), be filled with sealed filling material (16) in the groove (15), cylinder body (7) rodless cavity and cylinder body (7) rod chamber arrange respectively lower hydraulic fluid port (3) and upper hydraulic fluid port (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210397246 CN102889264A (en) | 2012-10-18 | 2012-10-18 | Hydraulic cylinder with magnetic control antifriction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210397246 CN102889264A (en) | 2012-10-18 | 2012-10-18 | Hydraulic cylinder with magnetic control antifriction structure |
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| Publication Number | Publication Date |
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| CN102889264A true CN102889264A (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210397246 Pending CN102889264A (en) | 2012-10-18 | 2012-10-18 | Hydraulic cylinder with magnetic control antifriction structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555807A (en) * | 2018-12-26 | 2019-04-02 | 浙江戈尔德减振器股份有限公司 | Single cylinder double-piston hydraulic damping device |
| CN114838067A (en) * | 2022-04-20 | 2022-08-02 | 银川威马电机有限责任公司 | Disc brake type brake of electromagnetic hydraulic system |
| CN115023560A (en) * | 2020-03-25 | 2022-09-06 | 舍弗勒技术股份两合公司 | Hydraulic actuator and hydraulic clutch actuator with magnetic filter |
-
2012
- 2012-10-18 CN CN 201210397246 patent/CN102889264A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555807A (en) * | 2018-12-26 | 2019-04-02 | 浙江戈尔德减振器股份有限公司 | Single cylinder double-piston hydraulic damping device |
| CN115023560A (en) * | 2020-03-25 | 2022-09-06 | 舍弗勒技术股份两合公司 | Hydraulic actuator and hydraulic clutch actuator with magnetic filter |
| CN114838067A (en) * | 2022-04-20 | 2022-08-02 | 银川威马电机有限责任公司 | Disc brake type brake of electromagnetic hydraulic system |
| CN114838067B (en) * | 2022-04-20 | 2023-12-05 | 银川威马电机有限责任公司 | Disc brake type brake of electromagnetic hydraulic system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |