CN104314917A - Local synchronization multistage oil cylinder applicable to heavy load - Google Patents
Local synchronization multistage oil cylinder applicable to heavy load Download PDFInfo
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- CN104314917A CN104314917A CN201410530048.3A CN201410530048A CN104314917A CN 104314917 A CN104314917 A CN 104314917A CN 201410530048 A CN201410530048 A CN 201410530048A CN 104314917 A CN104314917 A CN 104314917A
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- oil cylinder
- order rate
- thrust
- cylinder
- piston
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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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
- F15B15/165—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type with synchronisation of sections
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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 local synchronization multistage oil cylinder applicable to a heavy load. The local synchronization multistage oil cylinder comprises an oil cylinder (1), a lower cylinder cover (7), an upper supporting lug (8), a guide tape (9), a glyd ring (4), an O-shaped ring (10), an oil guide pipe (5), a buffer damping ring (6), a thrust level oil cylinder (2) and a speed level oil cylinder (3), wherein the thrust level oil cylinder (2) and the speed level oil cylinder (3) are connected in parallel; the glyd ring (4) and the O-shaped ring (10) are fixedly mounted in a sealing groove by compression; the guide tape (9) is mounted in a guide tape groove. When the oil cylinder works, the thrust level oil cylinder (2) and the speed level oil cylinder (3) extend out together, a large thrust can be output by the oil cylinder, and after the thrust level oil cylinder (2) moves in place, the speed level oil cylinder (3) synchronously moves in high speed. According to the oil cylinder, a step-by-step flexible structure and a synchronous flexible structure are fused, the large thrust can be output by the oil cylinder at the movement initial period, and high-speed stable movement can be realized at the movement last period.
Description
Technical field
The present invention relates to a kind of synchronous multi-stage oil cylinder, particularly one and be applicable to heavy duty local synchronization multi-stage oil cylinder.
background technique.
Multi-stage expansion cylinder is widely used in and requires that mounting distance is short, launches the long occasion of stroke, generally be made up of cylinder barrel, lower cylinder cap, upper journal, piston at different levels, piston rod, guidance tape, Glais ring, O shape circle, oil guide pipe and buffer damping ring etc., its working procedure is that piston and cylinder body form Seal cage, hydraulic oil constantly injects in Seal cage and forms seal-off pressure by hydraulic system, when pressure is greater than induced pressure, piston and piston rod will outwards move, and promote external loading acting.Apply more at present on the special vehicle such as loading-unloading vehicle, missile truck.According to the difference of structural type, multi-stage expansion cylinder can be divided into telescopic cylinder and synchronization telescope cylinder step by step.What current use was maximum is telescopic cylinder step by step, it is formed in parallel by cylinder at different levels, and the cylinder that during motion, effective active area is large first moves, after moving to the restraining position of higher level's oil cylinder, this grade of oil cylinder stop motion, the oil cylinder setting in motion that next stage area is larger, so repeatedly, till oil cylinder stretches out to the end, the feature of this cylinder overcomes heavy load, but exist and change level impact, changing between level and must slowing down during high speed operation, stable high-speed motion cannot be realized.
Summary of the invention
The object of the invention is to provide one to be applicable to heavy duty local synchronization multi-stage oil cylinder, and solve under heavy load condition, existing multi-stage oil cylinder cannot realize the problem of high-speed stable running.
One is applicable to heavy duty local synchronization multi-stage oil cylinder, comprising: cylinder barrel, lower cylinder cap, upper journal, guidance tape, Glais ring, O shape circle, oil guide pipe and buffering damping ring, also comprise: thrust level oil cylinder and velocity stage oil cylinder.Wherein thrust level oil cylinder comprises: thrust piston and thrust piston bar.Velocity stage oil cylinder is made up of first-order rate oil cylinder and second order rate oil cylinder, and first-order rate oil cylinder, comprising: first-order rate piston and first-order rate piston rod, and second order rate oil cylinder, comprising: second order rate piston and second order rate piston rod.First-order rate piston and the machine shaping of first-order rate piston rod one, second order rate piston and the machine shaping of second order rate piston rod one.Second order rate piston to be placed in first-order rate piston rod and to be connected by cylindric pair.First-order rate piston to be placed in thrust piston bar and to be connected by cylindric pair.Thrust piston to be placed in cylinder barrel and to be connected by cylindric pair.Oil guide pipe is fixedly connected with first-order rate piston, and extend in second order rate piston rod through second order rate piston.Buffer damping ring and thrust piston lower end are threaded connection, and lower cylinder cap and cylinder barrel lower end are threaded connection.Upper journal and second order rate piston rod upper end are threaded connection.There is seal groove cylinder barrel lower end, and the seal groove internal fixtion of cylinder barrel installs O shape circle.All there is guiding trough of belt at thrust piston, first-order rate piston and second order rate piston two ends, there is Glais ring groove at middle part, in guiding trough of belt, guidance tape is installed, install Glais ring in Glais ring groove, have two seal grooves in the middle part of second order rate piston inner diameter, seal groove internal fixtion installs O shape circle.
When local synchronization multi-stage oil cylinder launches, thrust level oil cylinder setting in motion, velocity stage oil cylinder and thrust level oil cylinder keep geo-stationary, and thrust level oil cylinder anti-chamber hydraulic oil flows out whole oil cylinder by oil guide pipe through velocity stage oil cylinder, and now local synchronization multi-stage oil cylinder overcomes heavy load.After thrust level cylinder movement to cylinder barrel end, complete and change level, velocity stage oil cylinder starts to be synchronized with the movement, and finally completes expansion action.When local synchronization multi-stage oil cylinder shrinks, hydraulic oil admission velocity level oil cylinder in hydraulic system, velocity stage oil cylinder shrinks simultaneously and rapidly, thrust level oil cylinder transfixion, when first-order rate level oil cylinder piston touches thrust level oil cylinder bottom buffer damping ring, thrust level oil cylinder setting in motion, velocity stage oil cylinder is with thrust level cylinder movement, up to the ends contact with lower cylinder cap, whole local synchronization multi-stage oil cylinder shrinks and puts in place.
This oil cylinder principle is simple, easy to use, can export high thrust meet loading demand at thrust output section, and after load diminishes, output speed that can be reliable and stable, effectively can improve the efficiency of hydraulic system, meet the requirement of specific loads.
Accompanying drawing explanation
A kind of structural representation being applicable to heavy duty local synchronization multi-stage oil cylinder of Fig. 1;
A kind of thrust level cylinder structure sketch being applicable to heavy duty local synchronization multi-stage oil cylinder of Fig. 2;
A kind of velocity stage cylinder structure sketch being applicable to heavy duty local synchronization multi-stage oil cylinder of Fig. 3.
1. cylinder barrel 2. thrust level oil cylinder 3. velocity stage oil cylinder 4. Glais ring 5. oil guide pipe 6. buffer damping ring 7. times cylinder caps
8. upper journal 9. guidance tape 10.O shape circle.
Embodiment
One is applicable to heavy duty local synchronization multi-stage oil cylinder, comprising: cylinder barrel 1, lower cylinder cap 7, upper journal 8, guidance tape 9, Glais ring 4, O shape circle 10, oil guide pipe 5 and buffering damping ring 6, also comprise: thrust level oil cylinder 2 and velocity stage oil cylinder 3.Wherein thrust level oil cylinder 2 comprises: thrust piston and thrust piston bar.Velocity stage oil cylinder 3 is made up of first-order rate oil cylinder and second order rate oil cylinder, and first-order rate oil cylinder, comprising: first-order rate piston and first-order rate piston rod, and second order rate oil cylinder, comprising: second order rate piston and second order rate piston rod.First-order rate piston and the machine shaping of first-order rate piston rod one, second order rate piston and the machine shaping of second order rate piston rod one.Second order rate piston to be placed in first-order rate piston rod and to be connected by cylindric pair.First-order rate piston to be placed in thrust piston bar and to be connected by cylindric pair.Thrust piston to be placed in cylinder barrel 1 and to be connected by cylindric pair.Oil guide pipe 5 is fixedly connected with first-order rate piston, and extend in second order rate piston rod through second order rate piston.Buffer damping ring 6 and thrust piston lower end are threaded connection, and lower cylinder cap 7 is threaded connection with cylinder barrel 1 lower end.Upper journal 8 and second order rate piston rod upper end are threaded connection.There is seal groove cylinder barrel 1 lower end, and the seal groove internal fixtion of cylinder barrel 1 installs O shape circle 10.Thrust piston, first-order rate piston and second order rate piston two ends are provided with guiding trough of belt, middle part is provided with Glais ring groove, and guidance tape 9 is fixedly mounted in guiding groove, and Glais ring 4 is fixedly mounted in Glais ring groove.Be provided with two seal grooves in the middle part of second order rate piston inner diameter, groove internal fixtion installs O shape circle 10.
When local synchronization multi-stage oil cylinder launches, thrust level oil cylinder 2 setting in motion, velocity stage oil cylinder 3 and thrust level oil cylinder 2 keep geo-stationary, and thrust level oil cylinder 2 anti-chamber hydraulic oil flows out whole oil cylinder by oil guide pipe 5 through velocity stage oil cylinder, and now local synchronization multi-stage oil cylinder can overcome heavy load.Thrust level oil cylinder 2 completes and changes level after moving to cylinder barrel 1 end, and velocity stage oil cylinder 3 starts to be synchronized with the movement, and finally completes expansion action.When local synchronization multi-stage oil cylinder shrinks, hydraulic oil admission velocity level oil cylinder 3, velocity stage oil cylinder 3 shrinks simultaneously and rapidly, thrust level oil cylinder 2 transfixion, when first-order rate level oil cylinder piston touches thrust level oil cylinder 2 bottom buffer damping ring 6, thrust level oil cylinder 2 setting in motion, velocity stage oil cylinder 3 moves with thrust level oil cylinder 2, up to the ends contact with lower cylinder cap 7, whole local synchronization multi-stage oil cylinder shrinks and puts in place.
Claims (1)
1. one kind is applicable to heavy duty local synchronization multi-stage oil cylinder, comprise: cylinder barrel (1), lower cylinder cap (7), upper journal (8), guidance tape (9), Glais ring (4), O shape circle (10), oil guide pipe (5) and buffering damping ring (6), characterized by further comprising: thrust level oil cylinder (2) and velocity stage oil cylinder (3); Wherein thrust level oil cylinder (2) comprising: thrust piston and thrust piston bar; Velocity stage oil cylinder (3) is made up of first-order rate oil cylinder and second order rate oil cylinder, and first-order rate oil cylinder, comprising: first-order rate piston and first-order rate piston rod, and second order rate oil cylinder, comprising: second order rate piston and second order rate piston rod; First-order rate piston and the machine shaping of first-order rate piston rod one, second order rate piston and the machine shaping of second order rate piston rod one; Second order rate piston to be placed in first-order rate piston rod and to be connected by cylindric pair; First-order rate piston to be placed in thrust piston bar and to be connected by cylindric pair; Thrust piston to be placed in cylinder barrel (1) and to be connected by cylindric pair; Oil guide pipe (5) is fixedly connected with first-order rate piston, and extend in second order rate piston rod through second order rate piston; Buffer damping ring (6) and thrust piston lower end are threaded connection, and lower cylinder cap (7) and cylinder barrel (1) lower end are threaded connection; Upper journal (8) and second order rate piston rod upper end are threaded connection; There is seal groove cylinder barrel (1) lower end, and O shape circle (10) embeds in the seal groove of cylinder barrel (1); All there is guiding trough of belt at thrust piston, first-order rate piston and second order rate piston two ends, there is Glais ring groove at middle part, guidance tape (9) embeds in guiding trough of belt, Glais ring (4) embeds in Glais ring groove, two seal grooves are had, in O shape circle (10) difference embedding sealing groove in the middle part of second order rate piston inner diameter;
When local synchronization multi-stage oil cylinder launches, thrust level oil cylinder (2) setting in motion, velocity stage oil cylinder (3) and thrust level oil cylinder (2) keep geo-stationary, thrust level oil cylinder (2) anti-chamber hydraulic oil flows out whole oil cylinder by oil guide pipe (5) through velocity stage oil cylinder (3), and now local synchronization multi-stage oil cylinder overcomes heavy load; Thrust level oil cylinder (2) completes and changes level after moving to cylinder barrel (1) end, and velocity stage oil cylinder (3) starts to be synchronized with the movement, and finally completes expansion action; When local synchronization multi-stage oil cylinder shrinks, hydraulic oil admission velocity level oil cylinder (3) in hydraulic system, velocity stage oil cylinder (3) shrinks simultaneously and rapidly, thrust level oil cylinder (2) transfixion, when first-order rate level oil cylinder (3) piston contact is to thrust level oil cylinder (2) bottom buffer damping ring (6), thrust level oil cylinder (2) setting in motion, velocity stage oil cylinder (3) moves with thrust level oil cylinder (2), up to the ends contact with lower cylinder cap (7), whole local synchronization multi-stage oil cylinder shrinks and puts in place.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410530048.3A CN104314917B (en) | 2014-10-10 | 2014-10-10 | A kind of suitable in heavy duty local synchronization multi-stage oil cylinder |
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| CN201410530048.3A CN104314917B (en) | 2014-10-10 | 2014-10-10 | A kind of suitable in heavy duty local synchronization multi-stage oil cylinder |
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| CN104314917A true CN104314917A (en) | 2015-01-28 |
| CN104314917B CN104314917B (en) | 2016-06-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863924A (en) * | 2015-05-24 | 2015-08-26 | 南京理工大学 | Three-cavity power hydraulic cylinder |
| CN108457930A (en) * | 2018-04-08 | 2018-08-28 | 中国重汽集团南充海乐机械有限公司 | A kind of automobile-used single-acting piston type multistage synchronous fuel tank of disabled's boarding |
| CN110410381A (en) * | 2019-08-14 | 2019-11-05 | 北京特种机械研究所 | A kind of heavy duty multistage composite telescopic hydraulic cylinder |
| CN110451422A (en) * | 2019-08-14 | 2019-11-15 | 北京特种机械研究所 | Heavily loaded lifting method based on multistage composite telescopic hydraulic cylinder |
Citations (5)
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| JPH04254007A (en) * | 1990-12-28 | 1992-09-09 | Sumitomo Precision Prod Co Ltd | Two-stage expansion lock actuator |
| CN201843854U (en) * | 2010-11-18 | 2011-05-25 | 韶关市西马克液压缸有限公司 | Horizontal oil cylinder with guide slot |
| CN203098461U (en) * | 2013-02-05 | 2013-07-31 | 浏阳方圆液压有限公司 | Hydraulic cylinder and sealing assembly thereof |
| CN103671348A (en) * | 2013-12-17 | 2014-03-26 | 湘电重型装备有限公司 | Lifting hydraulic oil cylinder of mining dump truck |
| CN104088847A (en) * | 2014-07-02 | 2014-10-08 | 武汉华中天纬光电***有限公司 | Hydraulic machine |
-
2014
- 2014-10-10 CN CN201410530048.3A patent/CN104314917B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04254007A (en) * | 1990-12-28 | 1992-09-09 | Sumitomo Precision Prod Co Ltd | Two-stage expansion lock actuator |
| CN201843854U (en) * | 2010-11-18 | 2011-05-25 | 韶关市西马克液压缸有限公司 | Horizontal oil cylinder with guide slot |
| CN203098461U (en) * | 2013-02-05 | 2013-07-31 | 浏阳方圆液压有限公司 | Hydraulic cylinder and sealing assembly thereof |
| CN103671348A (en) * | 2013-12-17 | 2014-03-26 | 湘电重型装备有限公司 | Lifting hydraulic oil cylinder of mining dump truck |
| CN104088847A (en) * | 2014-07-02 | 2014-10-08 | 武汉华中天纬光电***有限公司 | Hydraulic machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863924A (en) * | 2015-05-24 | 2015-08-26 | 南京理工大学 | Three-cavity power hydraulic cylinder |
| CN108457930A (en) * | 2018-04-08 | 2018-08-28 | 中国重汽集团南充海乐机械有限公司 | A kind of automobile-used single-acting piston type multistage synchronous fuel tank of disabled's boarding |
| CN110410381A (en) * | 2019-08-14 | 2019-11-05 | 北京特种机械研究所 | A kind of heavy duty multistage composite telescopic hydraulic cylinder |
| CN110451422A (en) * | 2019-08-14 | 2019-11-15 | 北京特种机械研究所 | Heavily loaded lifting method based on multistage composite telescopic hydraulic cylinder |
| CN110410381B (en) * | 2019-08-14 | 2021-02-09 | 北京特种机械研究所 | Multi-stage composite telescopic hydraulic cylinder for heavy load |
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| Publication number | Publication date |
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| CN104314917B (en) | 2016-06-22 |
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