CN103527697A - Hydro-pneumatic spring suspension cylinder - Google Patents
Hydro-pneumatic spring suspension cylinder Download PDFInfo
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- CN103527697A CN103527697A CN201310530177.8A CN201310530177A CN103527697A CN 103527697 A CN103527697 A CN 103527697A CN 201310530177 A CN201310530177 A CN 201310530177A CN 103527697 A CN103527697 A CN 103527697A
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Abstract
The invention relates to a hydro-pneumatic spring suspension cylinder which mainly comprises an upper connector 1, a damping hole 2, a main piston 3, a cylinder barrel 4, a piston rod 6, a guide sleeve 7, a large nut 8, a lower connector 9, a lower seat 10, a cylinder 12, a floating piston 13, a sealing ring 15, an upper seat 16 and a one-way valve 17, wherein the piston rod 6 is of a hollow structure, and the guide sleeve 7 is arranged outside the hollow piston rod. A main oil chamber 18, an auxiliary oil chamber 11, a piston rod cavity oil chamber 5 and an air chamber 14 are formed inside the cylinder. The upper connector of the hydro-pneumatic spring suspension cylinder is connected with a frame, the lower connector is connected with an axle, an engineering vehicle can realize a wide-range lifting function, vibration reduction requirements under a severe road condition in the running process can be met, working condition adaptability and running smoothness of the vehicle are improved, and comfort of drivers and passengers is improved.
Description
Technical field
The present invention relates to a kind of hydro-pneumatic spring hanging oil cylinder, a kind of engineering vehicle hydro-pneumatic spring hanging oil cylinder specifically, can realize engineering vehicle on a large scale in lifting function and running process to vibration damping requirement under severe road conditions.
Background technique
Though existing engineering vehicle is with hydro-pneumatic spring, some plays certain damping effect, cannot take into account unloaded and fully loaded two kinds of different applying working conditions.The required accumulator size of some hydro-pneumatic springs is larger, need to be designed to external, and this usually can bring difficult arrangement on vehicle, causes the complicated and manufacture cost of structure the problem such as to increase.Therefore existing hydro-pneumatic spring can't meet the vehicle requirement of lifting function and severe road vibration damping on a large scale, driver control stability and driving comfort neither be very good.
Summary of the invention
The object of the invention is to overcome above deficiency, provide a kind of have compact structure simple, be easy to manufacture and maintenance, safe and reliable hydro-pneumatic spring hanging oil cylinder.
The present invention can adopt following technique measures to realize:
Hydro-pneumatic spring hanging oil cylinder of the present invention is mainly comprised of upper connected body, damping hole, main piston, cylinder barrel, piston rod, guide sleeve, big nut, second line of a couplet junctor, lower, cylinder, floating piston, seal ring, the seat of honour and one-way valve, wherein piston rod is hollow structure, and hollow piston rod outer installment has guide sleeve.In inner ,Fu grease chamber, main grease chamber, rod end chamber grease chamber and four spaces of air chamber of forming of oil cylinder.
Main grease chamber is the space being surrounded by main piston, cylinder barrel and upper connected body, on main piston, be provided with damping hole and Yu Fu grease chamber, one-way valve ，Shi Zhu grease chamber communicate ，Zhu grease chamber also pass through on hydraulic fluid port I on connected body be connected with external hydraulic system.
Rod end chamber grease chamber is the space being surrounded by main piston, cylinder barrel, piston rod and guide sleeve, is provided with the hydraulic fluid port II being connected with external hydraulic system on cylinder barrel.
Air chamber He Fu grease chamber is isolated in cylinder by floating piston, and air chamber is the space being surrounded by the seat of honour, cylinder and floating piston, belongs to the part in cylinder; Secondary grease chamber comprises two-part, and a part is the space being surrounded by floating piston and cylinder, and another part is that the ，Fu grease chamber, space being surrounded by main piston, piston rod and cylinder is communicated with by damping hole and one-way valve Yu Zhu grease chamber.
Beneficial effect of the present invention is as follows:
The present invention have compact structure simple, be easy to manufacture and maintenance, safe and reliable feature, can realize engineering vehicle on a large scale in lifting function and running process to vibration damping requirement under severe road conditions, not only improve adaptability for working condition and the run smoothness of vehicle, and improved driver and passenger's travelling comfort.
Accompanying drawing explanation
Fig. 1 is hydro-pneumatic spring hanging oil cylinder structural representation of the present invention.
Sequence number in figure: 1, upper connected body 2, damping hole 3, main piston 4, cylinder barrel 5, rod end chamber grease chamber 6, piston rod 7, guide sleeve 8, big nut 9, second line of a couplet junctor 10 ,Xia Zuo11,Fu grease chambeies 12, cylinder 13, floating piston 14, air chamber 15, seal ring 16, the seat of honour 17, the one-way valve 18,Zhu A of grease chamber, hydraulic fluid port I B, hydraulic fluid port II
Embodiment
The present invention is described in further detail in connection with following instance (accompanying drawing):
As shown in Figure 1, hydro-pneumatic spring hanging oil cylinder of the present invention is mainly comprised of upper connected body 1, damping hole 2, main piston 3, cylinder barrel 4, piston rod 6, guide sleeve 7, big nut 8, second line of a couplet junctor 9, lower 10, cylinder 12, floating piston 13, seal ring 15, the seat of honour 16 and one-way valve 17, wherein piston rod 6 is hollow structure, and hollow piston rod outer installment has guide sleeve 7.In the inner 11, of 18,Fu grease chamber rod end chamber grease chamber 5, main grease chamber and 14 4 spaces of air chamber of forming of oil cylinder.
Rod end chamber grease chamber 5 is the spaces that surrounded by main piston 3, cylinder barrel 4, piston rod 6 and guide sleeve 7, is provided with the hydraulic fluid port II being connected with external hydraulic system on cylinder barrel 4.
Air chamber 14He Fu grease chamber 11 is isolated in cylinder 12 by floating piston 13, and air chamber 14 is the spaces that surrounded by the seat of honour 16, cylinder 12 and floating piston 13, belongs to the part in cylinder 12; Secondary grease chamber 11 comprises two-part, and a part is the space being surrounded by floating piston 13 and cylinder 12, and another part is that the ，Fu grease chamber, space 11 being surrounded by main piston 3, piston rod 6 and cylinder 12 is communicated with by damping hole 2 and one-way valve 17Yu Zhu grease chamber 18.
The present invention can realize axle of engineering vehicle and automatically mention, falls function, and vibration damping requirement in the process of moving.
Its detailed operation process is as follows:
After completing assembling, first the air chamber of hydro-pneumatic spring hanging oil cylinder of the present invention is full of as requested to the nitrogen of certain pressure, then, by ,Fu grease chamber, external hydraulic system Dui Zhu grease chamber and rod end chamber grease chamber injection liquid force feed, form hydro-pneumatic spring.
When running into certain suspension in the process of moving, vehicle breaks down, or when vehicle bridge need to be mentioned, hydro-pneumatic spring hanging oil cylinder will shorten, externally, under the effect of hydraulic system, hydraulic fluid port II, as filler opening, enters high pressure oil, hydraulic fluid port I is as return opening, thereby promote main piston, move upward together with piston rod, and then the vehicle bridge being connected with second line of a couplet junctor is also up mentioned, so just played the function that vehicle hanging is mentioned automatically.
Identical principle, when needs fall vehicle bridge, hydro-pneumatic spring hanging oil cylinder will be extended, externally, under the effect of hydraulic system, hydraulic fluid port I, as filler opening, enters high pressure oil, hydraulic fluid port II is as return opening, thereby promote main piston, move downward together with piston rod, and then the vehicle bridge being connected with second line of a couplet junctor is also fallen gradually, so just played the function that vehicle hanging falls automatically.
When vehicle travels on uneven road surface, the to-and-fro motion between vehicle frame and vehicle bridge of hydro-pneumatic spring hanging oil cylinder.When the local active force in the face of vehicle bridge increases, main grease chamber increased pressure, force main grease chamber hydraulic oil to flow into secondary grease chamber (one-way valve is in open mode) through damping hole and one-way valve, main piston moves upward, and ，Fu grease chamber pressure follow increases simultaneously, thereby promoting floating piston moves up, gas chamber volume reduces, increased pressure, and hydro-pneumatic spring hanging oil cylinder shortens.When Dang Zhu grease chamber pressure equates with air chamber pressure, the just stop motion of main piston, floating piston, hydro-pneumatic spring hanging oil cylinder also will keep certain length no longer to change.In this process, due to damping hole and one-way valve (one-way valve opens) He Fu grease chamber, Shi Zhu grease chamber connection simultaneously, the damping force that hydro-pneumatic spring hanging oil cylinder produces is smaller, and the elastic reaction that can give full play to like this gas indoor gas is to adapt to bump and to suppress the vehicle frame amplitude that moves up and down.
The local active force in the face of vehicle bridge reduces Shi，Zhu grease chamber pressure decreased, under air chamber pressure effect, floating piston moves down, and forces secondary grease chamber hydraulic oil to flow into main grease chamber through damping hole, and closing one-way valve, main piston moves downward, and hydro-pneumatic spring hanging oil cylinder is extended.When Dang Zhu grease chamber pressure equates with air chamber pressure, the just stop motion of main piston, floating piston, hydro-pneumatic spring hanging oil cylinder length no longer changes, and vehicle frame also will keep relative constant with the position of vehicle bridge.In this process, because unsprung weight is less, only have damping hole to be communicated with main grease chamber He Fu grease chamber (closed check valve) and can produce larger damping force and avoid too fast the impacting of hydro-pneumatic spring motion, the damping function that can give full play to like this hydro-pneumatic spring is to adapt to road surface and cave in and to suppress the vehicle frame amplitude that moves up and down.
Claims (4)
1. a hydro-pneumatic spring hanging oil cylinder, is characterized in that: hydro-pneumatic spring hanging oil cylinder mainly comprises connected body 1, damping
Hole 2, main piston 3, cylinder barrel 4, piston rod 6, guide sleeve 7, big nut 8, second line of a couplet junctor 9, lower 10, cylinder 12, floating piston 13, seal ring 15, the seat of honour 16 and one-way valve 17.
2. according to the hydro-pneumatic spring hanging oil cylinder described in right 1, it is characterized in that: described hydro-pneumatic spring hanging oil cylinder is comprised of three-decker from outside to inside, be respectively cylinder barrel, piston rod and cylinder, wherein piston rod is hollow structure, and cylinder is arranged in the piston rod of hollow.
3. according to the hydro-pneumatic spring hanging oil cylinder described in right 1, it is characterized in that: in described hydro-pneumatic spring hanging oil cylinder, cylinder is divided into air chamber He Fu grease chamber two-part by a floating piston.
4. according to the hydro-pneumatic spring hanging oil cylinder described in right 1, it is characterized in that: described He Fu grease chamber, hydro-pneumatic spring hanging oil cylinder Zhong Zhu grease chamber is connected by damping hole and one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530177.8A CN103527697A (en) | 2013-11-01 | 2013-11-01 | Hydro-pneumatic spring suspension cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530177.8A CN103527697A (en) | 2013-11-01 | 2013-11-01 | Hydro-pneumatic spring suspension cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN103527697A true CN103527697A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310530177.8A Pending CN103527697A (en) | 2013-11-01 | 2013-11-01 | Hydro-pneumatic spring suspension cylinder |
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| CN (1) | CN103527697A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972137A (en) * | 2016-05-17 | 2016-09-28 | 重庆德盟液压机械有限公司 | Hydro-pneumatic spring cylinder externally provided with energy accumulator |
| CN106246793A (en) * | 2016-10-14 | 2016-12-21 | 北京汽车研究总院有限公司 | A kind of hydro-pneumatic spring power cylinder, hydro pneumatic suspension and automobile |
| CN108331875A (en) * | 2018-02-06 | 2018-07-27 | 王海林 | A kind of positive/negative-pressure bimodulus buffer unit and application |
| CN108488297A (en) * | 2018-04-11 | 2018-09-04 | 华侨大学 | A kind of hydro-pneumatic spring |
| CN110375028A (en) * | 2019-08-13 | 2019-10-25 | 博汉（泉州）机械有限公司 | Combined motorcycle shock absorber and shock absorption method thereof |
| CN111473080A (en) * | 2020-02-25 | 2020-07-31 | 中国北方车辆研究所 | Hydro-pneumatic spring |
| CN111527299A (en) * | 2018-01-19 | 2020-08-11 | 京三电机株式会社 | Ventilation control valve for fuel tank |
| CN111895020A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN111895023A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN111895022A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN111895024A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
-
2013
- 2013-11-01 CN CN201310530177.8A patent/CN103527697A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972137A (en) * | 2016-05-17 | 2016-09-28 | 重庆德盟液压机械有限公司 | Hydro-pneumatic spring cylinder externally provided with energy accumulator |
| CN106246793A (en) * | 2016-10-14 | 2016-12-21 | 北京汽车研究总院有限公司 | A kind of hydro-pneumatic spring power cylinder, hydro pneumatic suspension and automobile |
| CN111527299A (en) * | 2018-01-19 | 2020-08-11 | 京三电机株式会社 | Ventilation control valve for fuel tank |
| CN108331875A (en) * | 2018-02-06 | 2018-07-27 | 王海林 | A kind of positive/negative-pressure bimodulus buffer unit and application |
| CN108488297A (en) * | 2018-04-11 | 2018-09-04 | 华侨大学 | A kind of hydro-pneumatic spring |
| CN110375028A (en) * | 2019-08-13 | 2019-10-25 | 博汉（泉州）机械有限公司 | Combined motorcycle shock absorber and shock absorption method thereof |
| CN110375028B (en) * | 2019-08-13 | 2024-02-09 | 泉州市博汉机械股份有限公司 | Combined motorcycle shock absorber and shock absorption method thereof |
| CN111473080A (en) * | 2020-02-25 | 2020-07-31 | 中国北方车辆研究所 | Hydro-pneumatic spring |
| CN111895020A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN111895023A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN111895022A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN111895024A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |