CN104179872A - Variable damping oil-gas suspension cylinder and mining dump truck thereof - Google Patents
Variable damping oil-gas suspension cylinder and mining dump truck thereof Download PDFInfo
- Publication number
- CN104179872A CN104179872A CN201410356209.1A CN201410356209A CN104179872A CN 104179872 A CN104179872 A CN 104179872A CN 201410356209 A CN201410356209 A CN 201410356209A CN 104179872 A CN104179872 A CN 104179872A
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- piston rod
- cylinder barrel
- cylinder
- oil gas
- damping oil
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Abstract
The invention discloses a variable damping oil-gas suspension cylinder and a mining dump truck thereof. The variable damping oil-gas suspension cylinder comprises an inverted cylinder barrel, a piston, a piston rod, a guide sleeve and a seal support, wherein the piston is in sliding fit with the inner side wall of the cylinder barrel; the piston rod pushes the piston to vertically slide along the cylinder barrel; the guide sleeve is mounted at the lower end of the cylinder barrel and movably connected with the piston rod; the seal support is arranged between the piston rod and the guide sleeve; a gas chamber is formed between the piston and the cylinder barrel, a main oil chamber communicated with the gas chamber is formed between the piston and the piston rod, and an auxiliary oil chamber is formed between the piston rod and the cylinder barrel; and a plurality of damping holes are formed in the side wall of the piston rod in the axial direction and communicated with the main oil chamber and the auxiliary oil chamber. The provided variable damping oil-gas suspension cylinder keeps advantages of high reliability and good sealing and lubricating property of the inverted cylinder, achieves the variable damping function and greatly improves the damping performance of the suspension cylinder.
Description
Technical field
The present invention relates to outstanding cylinder, relate in particular to a kind of adaptive damping oil gas hanging cylinder and quarry tipper thereof.
Background technique
Oil gas hanging cylinder is a kind of vibration damper that is widely used in quarry tipper, has that damping performance is good, a feature of the high and rigidity adaptive of compact structure, reliability.The outstanding cylinder of quarry tipper is mainly realized buffering and shock-absorbing function by damping hole and one-way valve.When compression stroke, one-way valve and damping hole are opened simultaneously, and fluid flows to the annular chamber between piston rod and cylinder barrel wall from piston rod cavity rapidly, thus outstanding cylinder compression apparatus with shock absorbing rapidly; When resilience (elongation) stroke, individual event valve is closed, and fluid only can reflux by damping hole, has greatly slowed down the speed of resilience.
The outstanding cylinder of quarry tipper is divided into and just puts outstanding cylinder and be inverted two kinds, outstanding cylinder according to installation form, and for just putting outstanding cylinder, the external damping pipeline of its cylinder barrel, detects pressure in cylinder according to sensor, then by servo valve control damping hole aperture, realizes and become damping function.But, due to the piston rod in cylinder barrel upward, sealing one end in outstanding cylinder air chamber, lubricating condition is poor, and common structure is more complicated and increased cost, in addition, external pipeline need to be welded on cylinder barrel wall, and the risk that this has just brought weld seam leakage of oil reduces outstanding cylinder global reliability.Consider the problem of seal lubrication, the inverted outstanding cylinder of the most employing of existing quarry tipper.For inverted outstanding cylinder, because sealing is immersed in oil all the time, although the lubricated good life-span is long, because structure is limit and cannot be arranged out-damping pipeline, more difficultly realize adaptive damping control.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of inverted adaptive damping oil gas hanging cylinder and quarry tipper thereof.
In order to achieve the above object, the present invention has adopted following technological scheme:
The invention provides a kind of adaptive damping oil gas hanging cylinder, there is such feature, inverted cylinder barrel; Piston, is slidably matched with the madial wall of cylinder barrel; Piston rod, promotes piston and slides up and down along cylinder barrel; Guide sleeve, is arranged on cylinder barrel lower end and is flexibly connected with piston rod; And sealed support, be arranged between piston rod and guide sleeve; Wherein, between piston and cylinder barrel, form air chamber, between piston and piston rod, form the main grease chamber being communicated with air chamber, between piston rod and cylinder barrel, form secondary grease chamber; The sidewall of piston rod is provided with several damping holes along piston rod axially-aligned, and damping hole is communicated with He Fu grease chamber of main grease chamber.
Further, in adaptive damping oil gas hanging cylinder provided by the invention, can also there is such feature: several damping holes are along the side-wall shaft of piston rod to helical arrangement.
Further, in adaptive damping oil gas hanging cylinder provided by the invention, can also there is such feature: the sidewall of piston rod is also provided with the one-way valve to secondary grease chamber by main grease chamber unilaterally connected.
Further, in adaptive damping oil gas hanging cylinder provided by the invention, can also there is such feature: one-way valve is conical seat non-return valve.
Further, in adaptive damping oil gas hanging cylinder provided by the invention, can also there is such feature: between piston and piston rod, be connected by screw fastening.
Further, in adaptive damping oil gas hanging cylinder provided by the invention, can also there is such feature: between guide sleeve and cylinder barrel, be connected by screw fastening.
Further, in adaptive damping oil gas hanging cylinder provided by the invention, can also there is such feature: in air chamber, be filled with nitrogen.
In addition, the present invention also provides a kind of quarry tipper, comprises the adaptive damping oil gas hanging cylinder in above-mentioned any one.
The beneficial effect that the present invention has is on the basis of the above:
Adaptive damping oil gas hanging cylinder provided by the invention and quarry tipper thereof, as long as control to quantity, size and the distribution of damping hole, can realize mating of damping and rigidity, make outstanding cylinder in the time that rigidity is larger, mate less damping, and hour mated larger damping in rigidity, such structure setting, had both retained and had been inverted the outstanding advantage that cylinder reliability is high, seal lubrication is good, realize again change damping function, improved greatly outstanding cylinder damping performance.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of adaptive damping oil gas hanging cylinder in the embodiment who the present invention relates to.
Fig. 2 is the enlarged diagram of letter e corresponding part in Fig. 1.
Fig. 3 is the enlarged diagram of alphabetical D corresponding part in the time that piston rod shrinks in Fig. 1.
Fig. 4 is the enlarged diagram of alphabetical D corresponding part in the time that piston rod extends in Fig. 1.
Wherein, 1 is that Gang Tong ﹑ 2 is that Huo Sai ﹑ 3 is that Huo Sai Gan ﹑ 31 is that Zu Ni Kong ﹑ 32 is that Dan is that Gang Qiu ﹑ 4 is that Dao is that Qi Shi ﹑ B is that main You Shi ﹑ C is secondary grease chamber Xiang Tao ﹑ 5 for Mi seals Zhi Zuo ﹑ A Xiang Fa ﹑ 321.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, 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 who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment
The present embodiment provides a kind of quarry tipper, and this quarry tipper comprises adaptive damping oil gas hanging cylinder as shown in Figure 1.
Adaptive damping oil gas hanging cylinder in Fig. 1 comprises: cylinder barrel 1, piston 2, piston rod 3, guide sleeve 4, and sealed support 5.
Cylinder barrel 1 is inverted, and piston 2 is slidably matched with the madial wall of cylinder barrel 1, and piston rod 3 promotes piston 2 and slides up and down along cylinder barrel 1; Guide sleeve 4 is arranged on cylinder barrel 1 lower end and is flexibly connected with piston rod 3, and sealed support 5 is arranged between piston rod 3 and guide sleeve 4.Between piston 2 and piston rod 3, be connected by screw fastening.Connected by screw fastening equally between guide sleeve 4 and cylinder barrel 1.
Between piston 2 and cylinder barrel 1, form air chamber A, and be filled with nitrogen in air chamber A.Between piston 2 and piston rod 3, form the main B of grease chamber being communicated with air chamber A, between piston rod 3 and cylinder barrel 1, form the secondary C of grease chamber.
As depicted in figs. 1 and 2, the sidewall of piston rod 3 is provided with several damping holes 31 along piston rod 3 axially-aligned, and damping hole 31 is communicated with the main B of grease chamber and the secondary C of grease chamber.And in order to reach good adaptive damping control, in the present embodiment, several damping holes 31 are along the side-wall shaft of piston rod 3 to helical arrangement.
In addition, the sidewall of piston rod 3 is also provided with the one-way valve 32 to the secondary C of grease chamber by the main B of grease chamber unilaterally connected, and one-way valve 32 is conical seat non-return valve, and the inside of conical seat non-return valve is provided with movable steel ball 321.
When quarry tipper travels, wheel hangs on cylinder because the impact force that level line face does not produce is applied to.While there is this situation, in air chamber A, the volume of nitrogen flexibly changes and absorbs external force under input force, and nitrogen pressurized can produce the pressure corresponding with external force in order to support quarry tipper simultaneously, and its effect is similar to pneumatic spring.The expansion of nitrogen and compression force fluid to flow in the main B of grease chamber and the secondary C of grease chamber, and the damping hole 31 on piston rod 3 and one-way valve 32 produce damping vibration attenuation vibrational energy with the mobile fluid between the main B of grease chamber and the secondary C of grease chamber.
As shown in figures 1 and 3, in the time that quarry tipper reaches projection or sails out of pit, wheel is pushed to, and the stressed cylinder barrel 1 that is pressed into of piston rod 3, carries out contractive action.The now interior nitrogen pressurized of cylinder barrel 1, and pass to fluid, oil flows to the secondary C of grease chamber from the main B of grease chamber, and fluid forces steel ball 321 to be lifted off a seat, and fluid can be filled with in the secondary C of grease chamber rapidly with damping hole 31 and one-way valve 32 on process piston rod 3.The length of retracting along with piston rod 3 becomes large, and nitrogen pressure becomes greatly gradually, and outstanding cylinder rigidity becomes greatly thereupon, and damping hole 31 numbers on state also become many gradually simultaneously, and damping diminishes gradually.Thereby make piston rod 3 with the more uniform speed retraction of one cylinder barrel 1, reduced vibration acceleration, improved the travelling comfort of taking.
As shown in Figure 1 and Figure 4, in the time that quarry tipper drives off projection or sails pit into, quarry tipper falls after rise, and piston rod 3 is protruding by the pressure of nitrogen in the weight of wheel and bridge and air chamber A, extends action.The volume reducing of the secondary C of grease chamber, C grease chamber of secondary grease chamber flows to the main B of grease chamber, and oil pressure pushes back valve seat by steel ball 321 and has closed one-way valve passage, forces the pressure oil of the secondary C of grease chamber only to flow back to the main B of grease chamber by the damping hole on piston rod 3.Along with the elongation of piston rod 3, nitrogen pressure diminishes gradually, and rigidity diminishes thereupon, and the damping hole 31 number quantity on state tail off gradually simultaneously, and damping diminishes gradually.Thereby make piston rod 3 with the more uniform speed resilience of one, in slowing down resilience speed, also lowered its resilience acceleration, improved riding comfort.
Adaptive damping oil gas hanging cylinder and quarry tipper thereof that the present embodiment provides, as long as control to quantity, size and the distribution of damping hole, can realize mating of damping and rigidity, make outstanding cylinder in the time that rigidity is larger, mate less damping, and hour mated larger damping in rigidity, such structure setting, had both retained and had been inverted the outstanding advantage that cylinder reliability is high, seal lubrication is good, realize again change damping function, improved greatly outstanding cylinder damping performance
Above specific embodiments of the invention be have been described in detail, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and alternative also all among category of the present invention.Therefore, equalization conversion and the amendment done without departing from the spirit and scope of the invention, all should contain within the scope of the invention.
Claims (8)
1. an adaptive damping oil gas hanging cylinder, is characterized in that, comprising:
Inverted cylinder barrel (1);
Piston (2), is slidably matched with the madial wall of described cylinder barrel (1);
Piston rod (3), promotes described piston (2) and slides up and down along described cylinder barrel (1);
Guide sleeve (4), is arranged on described cylinder barrel (1) lower end and is flexibly connected with described piston rod (3); And
Sealed support (5), is arranged between described piston rod (3) and described guide sleeve (4);
Wherein, between described piston (2) and described cylinder barrel (1), form air chamber, between described piston (2) and described piston rod (3), form the main grease chamber being communicated with described air chamber, between described piston rod (3) and described cylinder barrel (1), form secondary grease chamber;
The sidewall of described piston rod (3) is provided with several damping holes (31) along described piston rod (3) axially-aligned, and described damping hole (31) is communicated with described main grease chamber and described secondary grease chamber.
2. adaptive damping oil gas hanging cylinder according to claim 1, is characterized in that:
Damping hole described in several (31) is along the side-wall shaft of described piston rod (3) to helical arrangement.
3. adaptive damping oil gas hanging cylinder according to claim 1, is characterized in that:
The sidewall of described piston rod (3) is also provided with the one-way valve (32) to described secondary grease chamber by described main grease chamber unilaterally connected.
4. adaptive damping oil gas hanging cylinder according to claim 3, is characterized in that:
Described one-way valve (32) is conical seat non-return valve.
5. adaptive damping oil gas hanging cylinder according to claim 1, is characterized in that:
Between described piston (2) and described piston rod (3), be connected by screw fastening.
6. adaptive damping oil gas hanging cylinder according to claim 1, is characterized in that:
Between described guide sleeve (4) and described cylinder barrel (1), be connected by screw fastening.
7. adaptive damping oil gas hanging cylinder according to claim 1, is characterized in that:
In described air chamber, be filled with nitrogen.
8. a quarry tipper, is characterized in that:
Comprise the adaptive damping oil gas hanging cylinder described in any one in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356209.1A CN104179872A (en) | 2014-07-24 | 2014-07-24 | Variable damping oil-gas suspension cylinder and mining dump truck thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356209.1A CN104179872A (en) | 2014-07-24 | 2014-07-24 | Variable damping oil-gas suspension cylinder and mining dump truck thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN104179872A true CN104179872A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410356209.1A Pending CN104179872A (en) | 2014-07-24 | 2014-07-24 | Variable damping oil-gas suspension cylinder and mining dump truck thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613126A (en) * | 2015-02-10 | 2015-05-13 | 苏州陈恒织造有限公司 | Hydraulic and pneumatic type loom let-off mechanism buffer and application thereof |
| CN109630483A (en) * | 2018-12-21 | 2019-04-16 | 内蒙古北方重型汽车股份有限公司 | It is provided with the quarry tipper accumulator of piston sealing device |
| CN111559214A (en) * | 2019-02-14 | 2020-08-21 | 徐州徐工液压件有限公司 | Oil gas suspension and mining dump truck |
| CN113242943A (en) * | 2018-12-18 | 2021-08-10 | Ｋｙｂ株式会社 | Fluid pressure damper |
| CN114877005A (en) * | 2022-04-13 | 2022-08-09 | 山东阿诺达汽车零件制造有限公司 | Variable damping device of valve plate-free piston matched single-layer pipe small-hole damper |
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| CN2360676Y (en) * | 1997-07-05 | 2000-01-26 | 吴大文 | Hydraulic vibrator snubber for motor vehicle |
| CN101210597A (en) * | 2006-12-29 | 2008-07-02 | 中国直升机设计研究所 | Hydraulic damping energy-absorbing device |
| KR20090062196A (en) * | 2007-12-12 | 2009-06-17 | 현대자동차주식회사 | Shock-absorber for vehicle |
| CN202531717U (en) * | 2012-03-28 | 2012-11-14 | 南京理工大学 | Damping hole fine-adjustable hydraulic buffer |
| CN103644245A (en) * | 2013-09-26 | 2014-03-19 | 内蒙古北方重型汽车股份有限公司 | Automatic control variable damping oil-gas suspension cylinder |
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2014
- 2014-07-24 CN CN201410356209.1A patent/CN104179872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360676Y (en) * | 1997-07-05 | 2000-01-26 | 吴大文 | Hydraulic vibrator snubber for motor vehicle |
| CN101210597A (en) * | 2006-12-29 | 2008-07-02 | 中国直升机设计研究所 | Hydraulic damping energy-absorbing device |
| KR20090062196A (en) * | 2007-12-12 | 2009-06-17 | 현대자동차주식회사 | Shock-absorber for vehicle |
| CN202531717U (en) * | 2012-03-28 | 2012-11-14 | 南京理工大学 | Damping hole fine-adjustable hydraulic buffer |
| CN103644245A (en) * | 2013-09-26 | 2014-03-19 | 内蒙古北方重型汽车股份有限公司 | Automatic control variable damping oil-gas suspension cylinder |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613126A (en) * | 2015-02-10 | 2015-05-13 | 苏州陈恒织造有限公司 | Hydraulic and pneumatic type loom let-off mechanism buffer and application thereof |
| CN113242943A (en) * | 2018-12-18 | 2021-08-10 | Ｋｙｂ株式会社 | Fluid pressure damper |
| CN113242943B (en) * | 2018-12-18 | 2023-09-26 | Ｋｙｂ株式会社 | fluid pressure buffer |
| CN109630483A (en) * | 2018-12-21 | 2019-04-16 | 内蒙古北方重型汽车股份有限公司 | It is provided with the quarry tipper accumulator of piston sealing device |
| CN109630483B (en) * | 2018-12-21 | 2023-09-05 | 内蒙古北方重型汽车股份有限公司 | Mining dump truck energy accumulator provided with piston sealing device |
| CN111559214A (en) * | 2019-02-14 | 2020-08-21 | 徐州徐工液压件有限公司 | Oil gas suspension and mining dump truck |
| CN111559214B (en) * | 2019-02-14 | 2021-09-28 | 徐州徐工液压件有限公司 | Oil gas suspension and mining dump truck |
| CN114877005A (en) * | 2022-04-13 | 2022-08-09 | 山东阿诺达汽车零件制造有限公司 | Variable damping device of valve plate-free piston matched single-layer pipe small-hole damper |
| CN114877005B (en) * | 2022-04-13 | 2023-10-17 | 山东阿诺达汽车零件制造有限公司 | Variable damping device of valve-plate-free piston matched single-layer pipe small-hole damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: SANYI HEAVY-DUTY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SANY MINING MACHINERY CO., LTD. Effective date: 20141201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215300 SUZHOU, JIANGSU PROVINCE TO: 110000 SHENYANG, LIAONING PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20141201 Address after: Yansai Lake Street, Shenyang economic and Technological Development Zone of Liaoning Province, Shenyang City, No. 31, 110000 Applicant after: Sany Heavy Equipment Co.,Ltd. Address before: 215300 18 building, No. 9999 Lake Road, Kunshan Development Zone, Jiangsu, Suzhou Applicant before: Sany Mining Machinery Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141203 |