CN103062153A - Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper - Google Patents
Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper Download PDFInfo
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- CN103062153A CN103062153A CN2013100282732A CN201310028273A CN103062153A CN 103062153 A CN103062153 A CN 103062153A CN 2013100282732 A CN2013100282732 A CN 2013100282732A CN 201310028273 A CN201310028273 A CN 201310028273A CN 103062153 A CN103062153 A CN 103062153A
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Abstract
The invention discloses a self-lubricating device of a plunger-type multi-stage cylinder tube guiding slider for an autodumper, and relates to an automobile part. A plurality of rows of lubricating oil grooves and oil-guiding grooves are evenly arranged on the surface of an outer cylinder located at a cylinder guiding slider section. When the cylinder is lifted after high pressure oil enters the cylinder, the high pressure oil inside the cylinder flows into the lubricating oil grooves through the oil guiding grooves. Since the cylinder guiding slider section and the inner wall of an upper cylinder are in clearance fit with each other, part of the lubricating oil grooves is certain to be completely attached to the upper cylinder to form a relatively-sealed zone. The high pressure oil forms a high pressure zone within the relatively-sealed lubricating oil grooves to form mutual thrust. When the pressure reaches to a certain extent, a certain distance between the cylinder guiding slider section and the inner wall of the upper cylinder is generated, two friction surfaces are fully covered with the high pressure oil, an oil film is formed between the friction surfaces, frictional loss between the same is reduced, service life of the cylinder is greatly improved, and cylinder scuffing is avoided.
Description
Technical field
The present invention relates to a kind of automobile component, be specifically related to dump truck plunger type Multi-stage cylinder cylinder barrel guide runner self-lubricating device.This self-lubricating device also can be used for other plunger type single-acting multistage hydraulic cylinders, is used for solving the guide runner section of cylinder barrel afterbody and the excessive friction problem between higher level's inner wall of cylinder.
Background technique
Carriage of dump truck lifting preset type hydraulic oil cylinder is plunger type single-acting multistage hydraulic cylinder, and this kind oil cylinder is because it arranges that simple, compact structure, lifting efficiency are high, and lifting force is less, and the compartment lateral stiffness is large during lifting, so be widely used.But this kind structural requirement has long stroke, generally all is to adopt 3 grades, 4 grades or more multistage structure.Oil cylinder is in the process of lifting and decline, the guide runner section of cylinder barrel afterbody will inevitably produce friction with higher level's inner wall of cylinder, under the bad working environments conditions such as especially fully loaded at dump truck, unbalance loading and Uneven road, friction between them is more serious, because rubbing surface is lubricated bad, greatly reduce the working life of oil cylinder.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides dump truck plunger type Multi-stage cylinder cylinder barrel guide runner self-lubricating device, the high pressure oil that utilizes cylinder barrel inside forms lubricant film between guide runner part and higher level's inner wall of cylinder, thereby reduces friction and wear and tear.
The present invention is achieved through the following technical solutions: a kind of dump truck plunger type Multi-stage cylinder cylinder barrel guide runner self-lubricating device, dump truck is the plunger type single-action hydrocylinder with the plunger type Multi-stage cylinder, and it is comprised of base cylinder, one-level cylinder barrel, secondary cylinder barrel, three grades of cylinder barrels, piston rod and filler openings.On described secondary cylinder barrel and the one-level cylinder barrel outer limited ring is set, on described piston rod, three grades of cylinder barrels and the secondary cylinder barrel interior limited ring is set, outer cylinder is by the motion of inside and outside limited ring pulling inner cylinder tube; Described base cylinder is fixed on the hinged axle bed, and cylinder bottom is arranged at the bottom of base cylinder, on the base cylinder filler opening is set, and high pressure oil enters multistage cylinder barrel by filler opening and oil through.The bottom of described piston rod, three grades of cylinder barrels, secondary cylinder barrel and one-level cylinder barrels is cylinder barrel guide runner section.It is characterized in that: on the external cylindrical surface of described cylinder barrel guide runner section uniform making arrange more, many oil grooves of every row and draw oil groove.The long strip arc groove of described oil groove for radially making along circumferential surface, the described bar-shaped trough of oil groove for axially making along the cylndrical surface that draw; The middle part of drawing oil groove one end and oil groove connects, and draws the oil groove the other end and extends to cylinder barrel guide runner section end.After high pressure oil entered cylinder barrel by filler opening, when cylinder barrel began lifting, the high pressure oil in the cylinder barrel flowed into oil groove by drawing oil groove.
Oil groove and to draw oil groove be upper and lower two rows, upper and lower two row's oil grooves and draw the oil groove interlaced arrangement make and draw oil groove and oil groove is uniform completely in cylinder barrel guide runner section.
The invention has the beneficial effects as follows:
1, when hydraulic jack is started working, high pressure oil by on cylinder barrel afterbody guide runners at different levels part uniform offer draw oil groove and oil groove, make guide runner partly with between higher level's inner wall of cylinder produce certain separating, and formation oil film, and then reduce oil cylinder friction and wear between them when flexible, the working life of improving oil cylinder.
2, compact structure, easy to make, be convenient to promote the use of.
Description of drawings
The present invention is further described with mode of execution with reference to the accompanying drawings for the below.
Fig. 1 is mounting point of the present invention schematic representation;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the local amplification profile of the A-A of Fig. 2.
Among the figure: 1, piston rod, 2, three grades of cylinder barrels, 3, the secondary cylinder barrel, 4, the one-level cylinder barrel, 5, the base cylinder, 6, outer limited ring, 7, oil through, 8, interior limited ring; 9, cylinder bottom, 10, hinged axle bed, 11, cylinder barrel guide runner section, 12, oil groove, 13, draw oil groove, 14, filler opening.
Embodiment
A kind of dump truck plunger type Multi-stage cylinder cylinder barrel guide runner self-lubricating device, dump truck is the plunger type single-action hydrocylinder with the plunger type Multi-stage cylinder, present embodiment adopts three grades of oil cylinders, adds upper piston rod, and four lifting sections are arranged.
It is comprised of base cylinder 5, one-level cylinder barrel 4, secondary cylinder barrel 3, three grades of cylinder barrels 2, piston rod 1 and filler openings 14.Outer limited ring 6 is set on described secondary cylinder barrel 3 and the one-level cylinder barrel 4, on described piston rod 1, three grades of cylinder barrels 2 and the secondary cylinder barrel 3 interior limited ring 8 is set, outer cylinder is by inside and outside limited ring 8,6 pulling inner cylinder tubes motions.Described base cylinder 5 is fixed on the hinged axle bed 10, and hinged axle bed 10 is installed on the self-discharging automobile chassis, and piston rod 1 end is connected with the compartment.Cylinder bottom 9 is arranged at the bottom of base cylinder 5, on the base cylinder 5 filler opening 14 is set, and high pressure oil enters multistage cylinder barrel by filler opening 14 and oil through 7.The bottom of described piston rod 1, three grades of cylinder barrels 2, secondary cylinder barrel 3 and one-level cylinder barrels 4 is cylinder barrel guide runner section 11.It is characterized in that: on the external cylindrical surface of described cylinder barrel guide runner section 11 uniform making arrange more, many oil grooves of every row 12 and draw oil groove 13.The long strip arc groove of described oil groove 12 for radially making along circumferential surface, the described bar-shaped trough of oil groove 13 for axially making along the cylndrical surface that draw; The middle part of drawing oil groove 13 1 ends and oil groove 12 connects, and draws oil groove 13 the other ends and extends to cylinder barrel guide runner section 11 ends.After high pressure oil entered cylinder barrel by filler opening 14, when cylinder barrel began lifting, the high pressure oil in the cylinder barrel flowed into oil groove 12 by drawing oil groove 13.Because the matching gap between cylinder barrel guide runner section 11 and the higher level's inner wall of cylinder is about 0.25mm, and the diameter range of cylinder barrel is between 120-190mm, when oil cylinder is worked, must there be the inwall of parts of lubricating oil groove 12 and higher level's cylinder barrel to fit fully, form relative seal area.High pressure oil is in the oil groove 12 interior formation zone of high pressure of relative closure like this, thereby produce mutual thrust, when pressure acquires a certain degree, cylinder barrel guide runner section 11 will produce certain separating with higher level's inner wall of cylinder, make high pressure oil be full of two friction surfaces, and between them, form oil film, thereby reduce the frictional loss between them, the large working life of sending out the raising oil cylinder, and avoided oil cylinder pull-cylinder phenomena to occur.
Present embodiment oil groove 12 and draw oil groove 13 and be upper and lower two rows, ten of every rows, upper and lower two row's oil grooves 12 and draw oil groove 13 interlaced arrangement make and draw oil groove 13 and oil groove 12 is uniform completely in cylinder barrel guide runner section 11.Make high pressure oil be full of whole friction surface, and between them, form uniform oil film, high lubricating effect.
Claims (2)
1. a dump truck is with plunger type Multi-stage cylinder cylinder barrel guide runner self-lubricating device, dump truck is the plunger type single-action hydrocylinder with the plunger type Multi-stage cylinder, and it is comprised of base cylinder (5), one-level cylinder barrel (4), secondary cylinder barrel (3), three grades of cylinder barrels (2), piston rod (1) and filler opening (14); On described secondary cylinder barrel (3) and the one-level cylinder barrel (4) outer limited ring (6) is set, on described piston rod (1), three grades of cylinder barrels (2) and the secondary cylinder barrel (3) interior limited ring (8) is set, outer cylinder is by the motion of inside and outside limited ring (8,6) pulling inner cylinder tube; Described base cylinder (5) is fixed on the hinged axle bed (10), and cylinder bottom (9) is arranged at the bottom of base cylinder (5), on the base cylinder (5) filler opening (14) is set, and high pressure oil enters multistage cylinder barrel by filler opening (14) and oil through (7); The bottom of described piston rod (1), three grades of cylinder barrels (2), secondary cylinder barrel (3) and one-level cylinder barrel (4) is cylinder barrel guide runner section (11); It is characterized in that: on the external cylindrical surface of described cylinder barrel guide runner section (11) uniform making arrange more, many oil grooves of every row (12) and draw oil groove (13); The long strip arc groove of described oil groove (12) for radially making along circumferential surface, the described bar-shaped trough of oil groove (13) for axially making along the cylndrical surface that draw; The middle part of drawing oil groove (13) one ends and oil groove (12) connects, and draws oil groove (13) the other end and extends to cylinder barrel guide runner section (11) end; After high pressure oil entered cylinder barrel by filler opening (14), when cylinder barrel began lifting, the high pressure oil in the cylinder barrel flowed into oil groove (12) by drawing oil groove (13).
2. dump truck according to claim 1 is with plunger type Multi-stage cylinder cylinder barrel guide runner self-lubricating device, it is characterized in that: described oil groove (12) and draw oil groove (13) for upper and lower two row, upper and lower two row's oil grooves (12) and draw oil groove (13) interlaced arrangement make and draw oil groove (13) and oil groove (12) is uniform completely in cylinder barrel guide runner section (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028273.2A CN103062153B (en) | 2013-01-24 | 2013-01-24 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028273.2A CN103062153B (en) | 2013-01-24 | 2013-01-24 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
Publications (2)
| Publication Number | Publication Date |
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| CN103062153A true CN103062153A (en) | 2013-04-24 |
| CN103062153B CN103062153B (en) | 2015-03-25 |
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| CN201310028273.2A Expired - Fee Related CN103062153B (en) | 2013-01-24 | 2013-01-24 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5962703A (en) * | 1982-09-29 | 1984-04-10 | Shin Meiwa Ind Co Ltd | Multi-reciprocating multi-stage oil-pressure cylinder |
| JPH11336709A (en) * | 1998-05-26 | 1999-12-07 | Taiyo Ltd | Multistage cylinder apparatus |
| WO2006061061A1 (en) * | 2004-12-11 | 2006-06-15 | Bosch Rexroth Ag | Hydraulic cylinder in particular for a crude oil supply pump |
| CN201071855Y (en) * | 2007-06-20 | 2008-06-11 | 成都市新津光辉机械实业有限公司 | Multilevel sleeve type hydraulic oil cylinder |
| CN101532522A (en) * | 2009-04-22 | 2009-09-16 | 黄培华 | Improved single-action telescopic sleeve hydraulic cylinder |
| CN201916276U (en) * | 2010-12-16 | 2011-08-03 | 苏州龙盛测试设备有限公司 | Static-pressure plunger type hydraulic cylinder |
| CN202215530U (en) * | 2011-05-24 | 2012-05-09 | 泸州市江阳区红岩机械有限公司 | Single acting multistage oil cylinder |
| CN203114781U (en) * | 2013-01-24 | 2013-08-07 | 徐州科源液压股份有限公司 | Plunger type multistage cylinder barrel guiding sliding block self-lubricating device of autodumper |
-
2013
- 2013-01-24 CN CN201310028273.2A patent/CN103062153B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5962703A (en) * | 1982-09-29 | 1984-04-10 | Shin Meiwa Ind Co Ltd | Multi-reciprocating multi-stage oil-pressure cylinder |
| JPH11336709A (en) * | 1998-05-26 | 1999-12-07 | Taiyo Ltd | Multistage cylinder apparatus |
| WO2006061061A1 (en) * | 2004-12-11 | 2006-06-15 | Bosch Rexroth Ag | Hydraulic cylinder in particular for a crude oil supply pump |
| CN201071855Y (en) * | 2007-06-20 | 2008-06-11 | 成都市新津光辉机械实业有限公司 | Multilevel sleeve type hydraulic oil cylinder |
| CN101532522A (en) * | 2009-04-22 | 2009-09-16 | 黄培华 | Improved single-action telescopic sleeve hydraulic cylinder |
| CN201916276U (en) * | 2010-12-16 | 2011-08-03 | 苏州龙盛测试设备有限公司 | Static-pressure plunger type hydraulic cylinder |
| CN202215530U (en) * | 2011-05-24 | 2012-05-09 | 泸州市江阳区红岩机械有限公司 | Single acting multistage oil cylinder |
| CN203114781U (en) * | 2013-01-24 | 2013-08-07 | 徐州科源液压股份有限公司 | Plunger type multistage cylinder barrel guiding sliding block self-lubricating device of autodumper |
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| CN103062153B (en) | 2015-03-25 |
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