CN201166022Y - Hydraulic pressure accumulator oil cylinder for crane - Google Patents
Hydraulic pressure accumulator oil cylinder for crane Download PDFInfo
- Publication number
- CN201166022Y CN201166022Y CN 200820052364 CN200820052364U CN201166022Y CN 201166022 Y CN201166022 Y CN 201166022Y CN 200820052364 CN200820052364 CN 200820052364 CN 200820052364 U CN200820052364 U CN 200820052364U CN 201166022 Y CN201166022 Y CN 201166022Y
- Authority
- CN
- China
- Prior art keywords
- oil
- cylinder
- air cavity
- piston rod
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003921 oil Substances 0.000 claims abstract description 44
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a cylinder of a hydraulic pressure accumulator for cranes, which comprises a cylinder barrel (5), an oil cavity (7) and a piston rod (2) arranged inside the cylinder barrel (5), wherein an air cavity (9) is disposed in the piston rod (2), a piston (4) is arranged in the air cavity (9) of the piston rod (2) and separates the air cavity (9) from the oil cavity (7), the air cavity (9) is provided with an air charge valve fully filled with air, and the oil cavity (7) is equipped with a one-way valve fully filled with hydraulic oil. The cylinder of a hydraulic pressure accumulator for cranes is convenient in installation, safe in working at heights without leakage, and capable of effectively compressing stroke to generate elastic buffer.
Description
Technical field
It is a kind of hydraulic jack that the utility model relates to, and particularly relates to a kind of large-tonnage and super-tonnage of being applicable to and has the hoist hydraulic accumulator oil cylinder of high-altitude luffing auxiliary.
Technical background
The supporting mechanism of present domestic like product high-altitude luffing auxiliary adopts is that spring steel tubular type, pure cylinder type, floating piston are held structures such as oil cylinder, and these structures can not solve installs convenient, high-altitude safe and do not have leakages, effective problem such as compression stroke generation elastic buffer.
The model utility content
Technical problem to be solved in the utility model provides a kind of hoist hydraulic accumulator oil cylinder convenient, that high-altitude safe does not have leakage, effective compression stroke generation elastic buffer of installing.
In order to solve the problems of the technologies described above, the hoist that the utility model provides hydraulic accumulator oil cylinder, comprise cylinder barrel and oil pocket thereof and be installed on the interior piston rod of cylinder barrel, be provided with an air cavity in the described piston rod, air cavity at described piston rod is provided with a piston, described piston separates described air cavity and oil pocket, and described air cavity is provided with gas charging valve and gassy, and described oil pocket is provided with one-way valve and is full of hydraulic oil.
The position limit switch corresponding with cylinder barrel is housed on described piston rod.
The pressure transducer that detects the oil hydraulic cylinder internal pressure also is housed on the described cylinder barrel.
Adopt the hoist hydraulic accumulator oil cylinder of technique scheme, be made up of an air cavity and an oil pocket that is full of hydraulic oil that is full of nitrogen, there is a piston centre with Oil-gas Separation.Being in the cylinder during original state does not have pressure status, and this moment, piston rod stretched out fully.Earlier air cavity is filled the nitrogen of certain pressure, block up with the suction port of gas charging valve (unidirectional) with air cavity, (oil pocket) is full of hydraulic oil in cylinder barrel then, and charge pressure equates with air pressure, makes piston be in the neutral position, with one-way valve filler opening is blocked.Use one-way valve can prevent nitrogen and hydraulic fluid leak.During work, under the effect of external force P, oil cylinder advances inwards, and the pressure rising of oil pocket promotes piston and moves to air cavity, and along with dwindling of air cavity volume, nitrogen is constantly compressed, and makes that the pressure in the air cavity constantly increases, thereby produces elastic buffer.Because the volume of air cavity is greater than the volume of oil pocket, when oil cylinder is in full reduced state, when promptly hydraulic oil all enters air cavity (piston the right), can not make the explosion of air cavity inwall because the nitrogen pressure compression pressure raises.
Position limit switch is housed on piston rod, and when cylinder barrel moved to the stroke of setting, position limit switch was spacing.Pressure transducer also is housed on the cylinder barrel, can detects the pressure condition of oil hydraulic cylinder.
The present invention utilizes the compressible characteristics of gas, the nitrogen that employing has good stability is as compression air chamber, effectively compression stroke produces elastic buffer, be used for cushioning the energy that various reactions are impacted, stable, reliable, high-altitude safe does not have leakage, and need not external assisting agency and oil pipe hydraulic oil is provided, have the practical operation effect.
In sum, the utility model is a kind of hoist hydraulic accumulator oil cylinder convenient, that high-altitude safe does not have leakage, effective compression stroke generation elastic buffer of installing.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the utility model uses schematic representation.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, piston rod 2 is installed in cylinder barrel 5, be provided with oil pocket 7 in the cylinder barrel 5, be provided with an air cavity 9 in the piston rod 2, be provided with a piston 4 at the air cavity 9 of piston rod 2, piston 4 separates air cavity 9 and oil pocket 7, air cavity 9 is provided with unidirectional gas charging valve 1 and is full of nitrogen, oil pocket 7 is provided with one-way valve 6 and is full of hydraulic oil, and the position limit switch 3 corresponding with cylinder barrel 5 is housed on piston rod 2, and the pressure transducer 8 that detects the oil hydraulic cylinder internal pressure is housed on the cylinder barrel 5.
Referring to Fig. 1, this accumulator oil cylinder is made up of an air cavity 9 and an oil pocket 7 that is full of hydraulic oil that is full of nitrogen, and there is a piston 4 centre with Oil-gas Separation.Being in the cylinder during original state does not have pressure status, and this moment, piston rod 2 stretched out fully.Earlier air cavity 9 is filled the nitrogen of certain pressure, block up with the suction port of unidirectional gas charging valve 1 with air cavity 9, the oil pocket in cylinder barrel 57 is full of hydraulic oil by unidirectional liquid-filling valve 6 then, and charge pressure equates with air pressure, make piston 4 be in the neutral position, filler opening is blocked with one-way valve 6.Use unidirectional gas charging valve 1 and unidirectional liquid-filling valve 6 can prevent nitrogen and hydraulic fluid leak.During work, under the effect of external force P, cylinder barrel 5 advances inwards, and the pressure of oil pocket 7 raises and promotes piston 4 to air cavity 9 motions, and along with dwindling of air cavity 9 volumes, nitrogen is constantly compressed, and makes that the pressure in the air cavity 9 constantly increases, thereby produces elastic buffer.Because the volume of air cavity 9 is greater than the volume of oil pocket 7, when oil cylinder is in full reduced state, when promptly hydraulic oil all enters air cavity 9 (piston 4 the right), can not make the explosion of air cavity inwall because the nitrogen pressure compression pressure raises.
As depicted in figs. 1 and 2, during installation, oil cylinder piston bar 2 one ends are connected fixedly jib 11, cylinder barrel 5 one ends are connected on the luffing auxiliary 10.During work, when luffing auxiliary 10 rotates to a precipitous position, the accumulator oil cylinder will be advanced under the effect of external force inwards, the hydraulic oil that cylinder barrel is 5 li will promote piston 4 (air cavity 9) motion inwards, pressure in the oil cylinder just constantly increases like this, thereby produced an elastic buffer, can effectively prevent the danger that balancing stand is tumbled.
Claims (4)
1, a kind of hoist hydraulic accumulator oil cylinder, comprise cylinder barrel (5) and oil pocket (7) thereof and be installed on the interior piston rod (2) of cylinder barrel (5), it is characterized in that: be provided with an air cavity (9) in the described piston rod (2), air cavity (9) in described piston rod (2) is provided with a piston (4), described piston (4) separates described air cavity (9) and oil pocket (7), described air cavity (9) is provided with gas charging valve and gassy, and described oil pocket (7) is provided with one-way valve (6) and is full of hydraulic oil.
2, hoist according to claim 1 hydraulic accumulator oil cylinder is characterized in that: the position limit switch (3) corresponding with cylinder barrel (5) is housed on described piston rod (2).
3, hoist according to claim 1 and 2 hydraulic accumulator oil cylinder is characterized in that: the pressure transducer (8) that detects the oil hydraulic cylinder internal pressure also is housed on the described cylinder barrel (5).
4, hoist according to claim 1 and 2 hydraulic accumulator oil cylinder is characterized in that: described gas charging valve is unidirectional gas charging valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820052364 CN201166022Y (en) | 2008-02-27 | 2008-02-27 | Hydraulic pressure accumulator oil cylinder for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820052364 CN201166022Y (en) | 2008-02-27 | 2008-02-27 | Hydraulic pressure accumulator oil cylinder for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201166022Y true CN201166022Y (en) | 2008-12-17 |
Family
ID=40191409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820052364 Expired - Lifetime CN201166022Y (en) | 2008-02-27 | 2008-02-27 | Hydraulic pressure accumulator oil cylinder for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201166022Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072523A1 (en) * | 2009-12-15 | 2011-06-23 | 湖南三一智能控制设备有限公司 | Supporting device for crane and crane thereof |
| CN102408073A (en) * | 2010-09-25 | 2012-04-11 | 徐州重型机械有限公司 | Crane and anti-tipback cylinder thereof |
| WO2012055396A3 (en) * | 2010-10-29 | 2012-07-05 | Montanhydraulik Gmbh | Recoil press |
| CN103216497A (en) * | 2013-04-25 | 2013-07-24 | 长沙理工大学 | Membrane air chamber buffering slow-release cavity arranged in hinged pin shaft |
| CN103233944A (en) * | 2013-04-25 | 2013-08-07 | 长沙理工大学 | Air chamber spring combination buffer slow-release accommodating cavity arranged on oil cylinder head |
| CN103644936A (en) * | 2013-11-22 | 2014-03-19 | 北京宇航系统工程研究所 | A measurement apparatus used for a low temperature pressure accumulator |
| CN104564577A (en) * | 2013-10-29 | 2015-04-29 | 北京精密机电控制设备研究所 | Servo electric pump |
| CN104564908A (en) * | 2014-12-31 | 2015-04-29 | 中船重工中南装备有限责任公司 | Buffer hydraulic cylinder |
| CN107304777A (en) * | 2016-04-22 | 2017-10-31 | 四川大学 | Pressure accumulation oil cylinder |
| CN108317127A (en) * | 2018-04-11 | 2018-07-24 | 合肥长源液压股份有限公司 | Novel energy-storage hydraulic cylinder |
| CN109268322A (en) * | 2018-11-13 | 2019-01-25 | 湖南特力液压有限公司 | Energy-storage hydraulic device |
| CN113833715A (en) * | 2021-11-08 | 2021-12-24 | 东莞市通兴液压科技有限公司 | Hydraulic cylinder with explosion-proof buffering function |
-
2008
- 2008-02-27 CN CN 200820052364 patent/CN201166022Y/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072523A1 (en) * | 2009-12-15 | 2011-06-23 | 湖南三一智能控制设备有限公司 | Supporting device for crane and crane thereof |
| CN102408073B (en) * | 2010-09-25 | 2014-04-09 | 徐州重型机械有限公司 | Crane and anti-tipback cylinder thereof |
| CN102408073A (en) * | 2010-09-25 | 2012-04-11 | 徐州重型机械有限公司 | Crane and anti-tipback cylinder thereof |
| WO2012055396A3 (en) * | 2010-10-29 | 2012-07-05 | Montanhydraulik Gmbh | Recoil press |
| CN102958823A (en) * | 2010-10-29 | 2013-03-06 | 山地水利学有限公司 | Recoil press |
| CN102958823B (en) * | 2010-10-29 | 2014-12-10 | 山地水利学有限公司 | Recoil press |
| CN103216497A (en) * | 2013-04-25 | 2013-07-24 | 长沙理工大学 | Membrane air chamber buffering slow-release cavity arranged in hinged pin shaft |
| CN103233944A (en) * | 2013-04-25 | 2013-08-07 | 长沙理工大学 | Air chamber spring combination buffer slow-release accommodating cavity arranged on oil cylinder head |
| CN104564577A (en) * | 2013-10-29 | 2015-04-29 | 北京精密机电控制设备研究所 | Servo electric pump |
| CN103644936A (en) * | 2013-11-22 | 2014-03-19 | 北京宇航系统工程研究所 | A measurement apparatus used for a low temperature pressure accumulator |
| CN103644936B (en) * | 2013-11-22 | 2015-11-04 | 北京宇航系统工程研究所 | A kind of measurement mechanism for Low Temperature Storage depressor |
| CN104564908A (en) * | 2014-12-31 | 2015-04-29 | 中船重工中南装备有限责任公司 | Buffer hydraulic cylinder |
| CN107304777A (en) * | 2016-04-22 | 2017-10-31 | 四川大学 | Pressure accumulation oil cylinder |
| CN108317127A (en) * | 2018-04-11 | 2018-07-24 | 合肥长源液压股份有限公司 | Novel energy-storage hydraulic cylinder |
| CN109268322A (en) * | 2018-11-13 | 2019-01-25 | 湖南特力液压有限公司 | Energy-storage hydraulic device |
| CN113833715A (en) * | 2021-11-08 | 2021-12-24 | 东莞市通兴液压科技有限公司 | Hydraulic cylinder with explosion-proof buffering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOL Free format text: FORMER NAME: CHANG SHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 410007 Hunan province Changsha Furong Road three No. 613 Puyuan branch Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410007 Hunan province Changsha Furong Road three No. 613 Puyuan branch Patentee before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081217 |