CN104196818A - Novel quick-pressurizing hydraulic cylinder - Google Patents
Novel quick-pressurizing hydraulic cylinder Download PDFInfo
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- CN104196818A CN104196818A CN201410492869.2A CN201410492869A CN104196818A CN 104196818 A CN104196818 A CN 104196818A CN 201410492869 A CN201410492869 A CN 201410492869A CN 104196818 A CN104196818 A CN 104196818A
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Abstract
The invention discloses a novel quick-pressurizing hydraulic cylinder. The novel quick-pressurizing hydraulic cylinder comprises an outer cylinder, a main piston rod and a sub-piston rod, wherein the main piston rod is mounted in the outer cylinder in a sleeving manner; the sub-piston rod is mounted on the inner side of the main piston rod in a sleeving manner; a main piston is arranged on the main piston rod; a front sealing head and a rear sealing head are respectively and hermetically mounted at the front end and the rear end of the outer cylinder; a sub-piston is arranged on the sub-piston rod; a sub-sealing head is arranged at the rear end of the sub-piston; a sub-sealing cover is mounted on the outer side of the rear end of the sub-sealing head in a sleeving manner; a closed sub-operating cavity is formed by the outer wall of the sub-piston rod, the inner wall of the main piston rod, the sub-piston and the sub-sealing head. According to the novel quick-pressurizing hydraulic cylinder, while the tonnage of the hydraulic cylinder is increased, the piston area is increased slightly, so that the aim of pressurizing, namely, the tonnage of the hydraulic cylinder is larger than that of a conventional hydraulic cylinder under the situation that the inner diameters of the hydraulic cylinders are the same is achieved; while the tonnage of the hydraulic cylinder is increased, the motor power and the oil pump discharging capacity matched with the hydraulic cylinder are increased slightly, not increased or decreased, therefore, the aim of speed increase, namely, the operating speed of the hydraulic cylinder is much higher than that of the conventional hydraulic cylinder under the situation that the motor power and the oil pump discharge capacity are the same as that of the conventional hydraulic cylinder is achieved.
Description
Technical field
The present invention relates to a kind of oil hydraulic cylinder, particularly a kind of novel rapid-pressurizing hydraulic cylinder.
Background technique
Oil hydraulic cylinder by hydraulic energy change mechanical energy into, the do straight reciprocating motion hydraulic actuator of (or oscillating motion).Its reliable operation simple in structure, while realizing to-and-fro motion, can deduct speed reducer, and there is no drive gap with it, and motion steadily, is therefore used widely in the hydraulic system of various machineries.The design of existing conventional oil hydraulic cylinder and manufacturing process are very ripe, and still, along with innovation and the development of modern industrial technology, conventional oil hydraulic cylinder existing shortcoming when in the face of large hydraulic machinery field makes design of Hydraulic System personnel feel more helpless always.Oil hydraulic cylinder tonnage and cylinder inner carrier area are proportional, and piston area has determined oil hydraulic cylinder tonnage, and piston area has determined oil hydraulic cylinder internal diameter size equally, and therefore along with the increase of oil hydraulic cylinder tonnage, oil hydraulic cylinder internal diameter becomes a square increment with oil hydraulic cylinder cavity volume.For fluid,matching cylinder pressure motion speed, with the oil pump capacity of large oil hydraulic cylinder matched too need to be square to increase as unit, in like manner, driving the power of motor amplification of oil pump is also quite shockingly.Also the load that has increased like this electric power system in having increased power consumption, mechanical user cost significantly increases.Under complex working condition environment, electric power system cannot obtain effective guarantee, this has just caused some Large Hydraulic Equipment normally to use, if motor and oil pump do not do corresponding increase, before and after oil hydraulic cylinder, chamber turnover hydraulic flow is too small, will cause large hydraulic cylinder working speed excessively slow, affect the working efficiency of oil hydraulic cylinder.In this case, how rational allocation motor and oil pump proportioning in the situation that increasing oil hydraulic cylinder tonnage, needn't excessive increase power of motor and oil pump capacity or the in the situation that of the relatively little increment of power of motor oil pump capacity, make oil hydraulic cylinder gross tonnage have by a relatively large margin to increase, or less increase piston area in the situation that increasing oil hydraulic cylinder tonnage, thereby less increase cylinder diameter is the problem demanding prompt solution of modern hydraulic systems technology.
Summary of the invention
The present invention is directed to deficiency and defect that prior art exists, provide a kind of in increasing oil hydraulic cylinder tonnage less increase piston area, the in the situation that of identical oil hydraulic cylinder internal diameter, be greater than conventional oil hydraulic cylinder tonnage thereby reach; Less increase in increasing oil hydraulic cylinder tonnage, do not increase or power of motor and the oil pump capacity of reduction and oil hydraulic cylinder proportioning, thereby reach the in the situation that of same motor power and oil pump capacity operating rate far away higher than the novel rapid-pressurizing hydraulic cylinder of conventional oil hydraulic cylinder speedup.
For achieving the above object, the technical solution adopted in the present invention is: a kind of novel rapid-pressurizing hydraulic cylinder, comprise outer shell, main piston rod and sub-piston rod, outer shell front end is offered front oil through, main piston rod is sleeved in outer shell, its inner side is set with sub-piston rod, this main piston rod is provided with main piston, before described outer shell, rear two ends seal respectively before installation, rear head, before described, rear head and the outer inside wall of cylinder and main piston rod outer wall form the main active chamber of sealing, before, before rear head outside is respectively equipped with, rear seal-cover, on described rear head, offer the topping up hole that at least one is communicated with main active chamber, described sub-piston rod is provided with sub-piston, its rear end is provided with sub-end socket, outside, sub-end socket rear end is set with sub-capping, sub-piston rod outer wall, main piston rod inwall, with sub-piston, sub-end socket forms airtight sub-active chamber, described sub-piston rod front end is installed piston rod head, its rear end passes described rear head and is sleeved in sub-active chamber turnover oil duct parts, described piston rod head is connected with described main piston rod inwall, thereafter the direction recess matching with sub-piston rod front end is offered in end face center along axis, on the sidewall of described main piston rod rear end, offer the oil inlet hole being communicated with sub-active chamber, oil inlet hole is positioned at before main piston.
In above-mentioned rapid-pressurizing hydraulic cylinder, described forward and backward closure construction is respectively the cylindrical tube shape end of with, and this forward and backward capping barrel is sleeved on outer shell outside and is fixed on outer shell by screw thread, and as preferred version, the quantity in described topping up hole is three.
In above-mentioned rapid-pressurizing hydraulic cylinder, on described front head outer surface, offer to install the outer oil seal groove of outer oil seal, on its internal surface, offer the groove that is covered with dust, Glais ring groove, guiding trough of belt and inner oil seal groove, the groove that is covered with dust is positioned at described front head internal surface front end, described in be covered with dust that corresponding installation in groove, Glais ring groove, guiding trough of belt and inner oil seal groove is covered with dust, Glais ring, guidance tape and inner oil seal.The quantity of offering outer oil seal groove on described front head outer surface is two, and its internal surface is offered three guiding troughs of belt and four inner oil seal grooves.
In above-mentioned rapid-pressurizing hydraulic cylinder, on described rear head outer surface, offer two in order to the seal groove of O-ring seals to be installed.
In above-mentioned rapid-pressurizing hydraulic cylinder, described piston rod head front end is offered pin hole, and pin hole is used for installing pin.
In above-mentioned rapid-pressurizing hydraulic cylinder, described main piston outer surface offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
In above-mentioned rapid-pressurizing hydraulic cylinder, on described sub-end socket outer wall, offer to install the outer oil seal groove of outer oil seal, its internal surface offers to install the inner oil seal groove of inner oil seal and for the guiding trough of belt of guidance tape is installed, wherein, the quantity of outer oil seal groove is two, the quantity of inner oil seal groove is three, and the quantity of guiding trough of belt is two.
In above-mentioned rapid-pressurizing hydraulic cylinder, described sub-piston rod center is provided with central oil passage along axis, and this central oil passage is connected with hydraulic power unit by sub-active chamber turnover oil duct parts.
In above-mentioned rapid-pressurizing hydraulic cylinder, sub-piston is installed by screw thread in described sub-piston rod rear end, and sub-outer surface of piston offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
In above-mentioned rapid-pressurizing hydraulic cylinder, described front oilhole is fixedly connected with front oil pipe, on the anterior outer wall of outer shell, is fixed with cylinder sleeve.
The invention has the beneficial effects as follows:
1, rapid-pressurizing hydraulic cylinder of the present invention, less increase piston area in increasing oil hydraulic cylinder tonnage, thus reach the supercharging object that the in the situation that of identical oil hydraulic cylinder internal diameter oil hydraulic cylinder tonnage of the present invention is greater than conventional oil hydraulic cylinder tonnage; Less increase in increasing oil hydraulic cylinder tonnage, do not increase or power of motor and the oil pump capacity of reduction and oil hydraulic cylinder proportioning, thereby the in the situation that of same motor power and the oil pump capacity hydraulic cylinder works speed of the present invention of reaching is far away higher than the speedup object of conventional oil hydraulic cylinder.
2, the sub-piston rod front end of rapid-pressurizing hydraulic cylinder of the present invention is provided with piston rod head, piston rod head rear end is provided with the direction recess matching with the sub-piston rod front end of sub-piston, effectively avoid the collision of sub-piston rod and piston rod head, operate steadily, bearing capacity is strong, good sealing effect, long service life.
brief description of the drawings
Fig. 1 is the sectional structure schematic diagram that removes cylinder sleeve of rapid-pressurizing hydraulic cylinder of the present invention;
Fig. 2 is the sectional structure schematic diagram of rapid-pressurizing hydraulic cylinder of the present invention;
Fig. 3 is the structural representation of the cylinder sleeve of rapid-pressurizing hydraulic cylinder of the present invention;
Fig. 4 is the outer shell of rapid-pressurizing hydraulic cylinder of the present invention and the annexation schematic diagram of forward and backward end socket and forward and backward capping;
Fig. 5 is the outer shell of rapid-pressurizing hydraulic cylinder of the present invention and the decomposition texture schematic diagram of forward and backward end socket and forward and backward capping;
Fig. 6 is the structural representation of the front head of rapid-pressurizing hydraulic cylinder of the present invention;
Fig. 7 is the structural representation of the rear head cover of rapid-pressurizing hydraulic cylinder of the present invention;
Fig. 8 is the ear end face structural representation of the rear head cover of rapid-pressurizing hydraulic cylinder of the present invention;
Fig. 9 is the main piston of rapid-pressurizing hydraulic cylinder of the present invention and the annexation schematic diagram of main piston and piston rod head;
Figure 10 is the structural representation of the sub-end socket of rapid-pressurizing hydraulic cylinder of the present invention;
Figure 11 is the sub-piston of rapid-pressurizing hydraulic cylinder of the present invention and the annexation schematic diagram of sub-piston and sub-active chamber turnover oil duct parts;
Figure 12 is the structural representation of the sub-piston of rapid-pressurizing hydraulic cylinder of the present invention.
The meaning of number in the figure is: 1, outer shell, 2, main piston rod, 3, main piston, 4, front head, 5, rear head, 6, front capping, 7, rear seal-cover, 8, sub-piston rod, 9, sub-piston, 10, sub-end socket, 11, sub-capping, 12, sub-active chamber turnover oil duct parts, 13, front oil pipe, 14, cylinder sleeve, 15, main active chamber, 16, sub-active chamber, wherein, 1-1, front oilhole, 1-2, the outside thread of outer shell rear and front end, 2-1, piston rod head, 2-2, pin hole, 2-3, direction recess, 2-4, the oil inlet hole of main piston rod rear end, 3-1, oil seal groove on main piston, 3-2, Glais ring groove on main piston, 3-3, guiding trough of belt on main piston, 4-1, outer oil seal groove on front head, 4-2, the groove that is covered with dust on front head, 4-3, Glais ring groove on front head, 4-4, guiding trough of belt on Front oil seal, 4-5, inner oil seal groove on Front oil seal, 5-1, the seal groove of O-ring seals is installed, 5-2 on rear head, sub-piston rod through hole, 5-3, topping up hole, 6-1, internal thread in front capping, 7-1, internal thread on rear seal-cover, 8-1, central oil passage, 9-1, pin screw, 9-2, oil seal groove on sub-piston, 9-3, Glais ring groove, 9-4, guiding trough of belt.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail:
Embodiment 1: referring to Fig. 1 to Figure 12, a kind of novel rapid-pressurizing hydraulic cylinder, comprise outer shell 1, main piston rod 2 and sub-piston rod 8, outer shell 1 front end is offered front oil through 1-1, main piston rod 2 is sleeved in outer shell 1, its inner side is set with sub-piston rod 8, this main piston rod 2 is provided with main piston 3, before described outer shell 1, rear two ends seal respectively before installation, rear head 4, 5, before described, rear head 4, 5 form with outer shell 1 inwall and main piston rod 2 outer walls the main active chamber 15 sealing, before, rear head 4, before 5 outsides are respectively equipped with, rear seal-cover, before described, rear seal-cover 6, 7 for by front, rear head 4, 5 are pressed on the rear and front end of outer shell 1, on described rear head 5, offer the topping up hole 5-3 that at least one is communicated with main active chamber, described sub-piston rod is provided with sub-piston 9, its rear end is provided with sub-end socket 10, sub-end socket 10 outsides, rear end are set with sub-capping 11, sub-capping 11 is pressed abd fixed on sub-end socket 10 on sub-piston rod 8, described sub-piston rod 8 outer walls, main piston rod 2 inwalls, with sub-piston 9, sub-end socket 10 forms airtight sub-active chamber 16, described sub-piston rod 8 front ends are installed piston rod head 2-1, its rear end passes described rear head 4 and is sleeved in sub-active chamber turnover oil duct parts 12 by being opened in the through hole 5-2 of rear head 4 centers, described piston rod head 2-1 is connected with described main piston rod 2 inwalls, thereafter the direction recess 2-3 matching with sub-piston rod 8 front ends is offered in end face center along axis, on described main piston rod 2 rear end sidewalls, offer the oil inlet hole 2-4 being communicated with sub-active chamber, oil inlet hole 2-4 is positioned at before main piston 3, as preferred version, the quantity of described topping up hole 5-3 is three.
In above-mentioned rapid-pressurizing hydraulic cylinder, described forward and backward capping 6,7 structures are respectively the cylindrical tube shape end of with, and these forward and backward capping 6,7 barrels are sleeved on outer shell outside and are fixed on outer shell 1 by screw thread.
In above-mentioned rapid-pressurizing hydraulic cylinder, on described front head 4 outer surfaces, offer to install the outer oil seal groove 4-1 of outer oil seal, on its internal surface, offer the groove 4-2 that is covered with dust, Glais ring groove 4-3, guiding trough of belt 4-4 and inner oil seal groove 4-5, the groove 4-2 that is covered with dust is positioned at described front head 4 internal surface front ends, described in be covered with dust that corresponding installation in groove 4-2, Glais ring groove 4-3, guiding trough of belt 4-4 and inner oil seal groove 4-5 is covered with dust, Glais ring, guidance tape and inner oil seal.Wherein, the quantity of offering outer oil seal groove 4-1 on described front head 4 outer surfaces is two, and its internal surface is offered three guiding trough of belt 4-4 and four inner oil seal groove 4-5.
In above-mentioned rapid-pressurizing hydraulic cylinder, on described rear head 5 outer surfaces, offer two in order to the seal groove 5-1 of O-ring seals to be installed.
In above-mentioned rapid-pressurizing hydraulic cylinder, described piston rod head 2-1 front end is offered pin hole 2-2, and pin hole 2-2 is used for installing pin.
In above-mentioned rapid-pressurizing hydraulic cylinder, described main piston 3 outer surfaces offer in order to oil seal groove 3-1, the Glais ring groove 3-2 of corresponding installation oil sealing, Glais ring and guidance tape and guiding trough of belt 3-3.
In above-mentioned rapid-pressurizing hydraulic cylinder, on described sub-end socket 10 outer walls, offer to install the outer oil seal groove 10-1 of outer oil seal, its internal surface offers to install the inner oil seal groove 10-2 of inner oil seal and for the guiding trough of belt 10-3 of guidance tape is installed, wherein, the quantity of outer oil seal groove 10-1 is two, the quantity of inner oil seal groove 10-2 is three, and the quantity of guiding trough of belt 10-3 is two.
In above-mentioned rapid-pressurizing hydraulic cylinder, described sub-piston rod 8 centers are provided with central oil passage 8-1 along axis, and this central oil passage 8-1 is connected with hydraulic power unit by sub-active chamber turnover oil duct parts 12.
In above-mentioned rapid-pressurizing hydraulic cylinder, sub-piston 9 is installed by screw thread in described sub-piston rod 8 rear ends, sub-piston 9 outer surfaces offer in order to oil seal groove 9-2, the Glais ring groove 9-3 of corresponding installation oil sealing, Glais ring and guidance tape and guiding trough of belt 9-4, on this sub-piston 9, also offer the pin screw 9-1 vertical with its axis, pin screw 9-1 is pressed on sub-piston 9 on sub-piston rod 8 in order to install.
In above-mentioned rapid-pressurizing hydraulic cylinder, described front oilhole 1-1 is fixedly connected with front oil pipe 13, on the anterior outer wall of outer shell, is fixed with cylinder sleeve 14, and cylinder sleeve 14 is the installation fitting of fixing rapid-pressurizing hydraulic cylinder.
Rapid-pressurizing hydraulic cylinder of the present invention forms power unit by power system by motor and oil pump, forms hydraulic control unit by electro-hydraulic reversing valve, relief valve, one-way valve, liquid-filling valve, can adopt hydraulic power system of the prior art and control system.
The working procedure of rapid-pressurizing hydraulic cylinder of the present invention:
1, the quick advancement stage of oil hydraulic cylinder: hydraulic oil is flowed through after valve piece equal pressure control unit by hydraulic-pressure pump, enter sub-active chamber 16 ante-chambers by the central oil passage 8-1 in sub-piston rod 8, sub-piston rod 8 is fixed on cylinder tail, and sub-piston 9 is fixed on sub-piston rod 8 and cannot moves, hydraulic oil enters and reacts on main piston rod 2 inside after son work ante-chamber and form pressure forward, promoting main piston rod 2 travels forward, meanwhile, main, active chamber back cavity forms vacuum the hydraulic oil in fuel tank is sucked in main active chamber back cavity by the topping up hole 5-3 on the liquid-filling valve on valve piece and rear head 5, and hydraulic oil in sub-active chamber back cavity is back in fuel tank by front oil pipe 13, now rapid-pressurizing hydraulic cylinder reaches taking sub-piston rod 8 as ram with small displacement and drives the large hydraulic cylinder object of work fast.
2, the oil hydraulic cylinder high pressure acting stage: liquid-filling valve cuts out, and oil pump is simultaneously to sub-active chamber ante-chamber and the oiling of main active chamber back cavity, and oil hydraulic cylinder enters full tonnage working stage, and now the gross tonnage of oil hydraulic cylinder depends on piston area on the certain basis of system pressure.And the piston area of rapid-pressurizing hydraulic cylinder equals sub-cylinder piston area and outer shell piston area summation deducts two gall nut Gang You road areas, therefore the piston area of rapid-pressurizing hydraulic cylinder is far longer than the piston area of the conventional oil hydraulic cylinder of uniform internal diameter, therefore reaches pressurized effect.
3, oil hydraulic cylinder retreats the stage: hydraulic oil enters after main work ante-chamber by front oil pipe 13, enter sub-active chamber 16 back cavities by chamber oil inlet hole 2-4 before and after the sub-work on main piston rod 2 walls, meanwhile, son, the hydraulic oil of active chamber 16 ante-chambers is discharged outside outer shell 1 by the central oil passage 8-1 in sub-piston rod 8, and a large amount of hydraulic oil of main active chamber 15 back cavities are got rid of outside cylinder through topping up hole 5-3, complete oil hydraulic cylinder action.
Claims (10)
1. a novel rapid-pressurizing hydraulic cylinder, comprise outer shell, main piston rod and sub-piston rod, outer shell front end is offered front oil through, it is characterized in that: main piston rod is sleeved in outer shell, its inner side is set with sub-piston rod, this main piston rod is provided with main piston, the forward and backward two ends of described outer shell seal respectively installs forward and backward end socket, described forward and backward end socket and the outer inside wall of cylinder and main piston rod outer wall form the main active chamber of sealing, forward and backward end socket outside is respectively equipped with forward and backward capping, offers the topping up hole that at least one is communicated with main active chamber on described rear head, described sub-piston rod is provided with sub-piston, its rear end is provided with sub-end socket, outside, sub-end socket rear end is set with sub-capping, sub-piston rod outer wall, main piston rod inwall, with sub-piston, sub-end socket forms airtight sub-active chamber, described sub-piston rod front end is installed piston rod head, its rear end passes described rear head and is sleeved in sub-active chamber turnover oil duct parts, described piston rod head is connected with described main piston rod inwall, thereafter the direction recess matching with sub-piston rod front end is offered in end face center along axis, on the sidewall of described main piston rod rear end, offer the oil inlet hole being communicated with sub-active chamber, oil inlet hole is positioned at before main piston.
2. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described forward and backward closure construction is respectively the cylindrical tube shape end of with, and this forward and backward capping barrel is sleeved on outer shell outside and is fixed on outer shell by screw thread.
3. novel rapid-pressurizing hydraulic cylinder according to claim 1, it is characterized in that: the outer oil seal groove that offers to install outer oil seal on described front head outer surface, on its internal surface, offer the groove that is covered with dust, Glais ring groove, guiding trough of belt and inner oil seal groove, the groove that is covered with dust is positioned at described front head internal surface front end, described in be covered with dust that corresponding installation in groove, Glais ring groove, guiding trough of belt and inner oil seal groove is covered with dust, Glais ring, guidance tape and inner oil seal.
4. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: on described rear head outer surface, offer two in order to the seal groove of O-ring seals to be installed.
5. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described piston rod head front end is offered pin hole.
6. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described main piston outer surface offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
7. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described sub-piston rod center is provided with central oil passage along axis, and this central oil passage is connected with hydraulic power unit by sub-active chamber turnover oil duct parts.
8. according to the novel rapid-pressurizing hydraulic cylinder described in claim 1 or 7, it is characterized in that: sub-piston is installed by screw thread in described sub-piston rod rear end, sub-outer surface of piston offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
9. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described front oilhole is fixedly connected with front oil pipe, on the anterior outer wall of outer shell, is fixed with cylinder sleeve.
10. novel rapid-pressurizing hydraulic cylinder according to claim 1, it is characterized in that: on described sub-end socket outer wall, offer to install the outer oil seal groove of outer oil seal, its internal surface offers to install the inner oil seal groove of inner oil seal and for the guiding trough of belt of guidance tape is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492869.2A CN104196818B (en) | 2014-09-24 | 2014-09-24 | Novel rapid-pressurizing hydraulic cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492869.2A CN104196818B (en) | 2014-09-24 | 2014-09-24 | Novel rapid-pressurizing hydraulic cylinder |
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| CN104196818A true CN104196818A (en) | 2014-12-10 |
| CN104196818B CN104196818B (en) | 2016-04-06 |
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| CN201410492869.2A Active CN104196818B (en) | 2014-09-24 | 2014-09-24 | Novel rapid-pressurizing hydraulic cylinder |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2661987Y (en) * | 2003-10-22 | 2004-12-08 | 方子豪 | High power superchargeable oil hydraulic cylinder |
| CN202391857U (en) * | 2011-11-10 | 2012-08-22 | 常州市腾田液压机械有限公司 | Two-stage cylinder-positioned speed-adjustable oil cylinder |
| JP2013060983A (en) * | 2011-09-12 | 2013-04-04 | Taiyo Ltd | Fluid pressure cylinder device |
| CN203239682U (en) * | 2013-04-22 | 2013-10-16 | 江苏顺达机械设备有限公司 | Quick oil cylinder |
| CN203627397U (en) * | 2013-12-20 | 2014-06-04 | 江苏龙城洪力液压设备有限公司 | Erector telescopic oil cylinder |
| CN204113800U (en) * | 2014-09-24 | 2015-01-21 | 郑州协力建工设备有限公司 | Novel rapid-pressurizing hydraulic cylinder |
-
2014
- 2014-09-24 CN CN201410492869.2A patent/CN104196818B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2661987Y (en) * | 2003-10-22 | 2004-12-08 | 方子豪 | High power superchargeable oil hydraulic cylinder |
| JP2013060983A (en) * | 2011-09-12 | 2013-04-04 | Taiyo Ltd | Fluid pressure cylinder device |
| CN202391857U (en) * | 2011-11-10 | 2012-08-22 | 常州市腾田液压机械有限公司 | Two-stage cylinder-positioned speed-adjustable oil cylinder |
| CN203239682U (en) * | 2013-04-22 | 2013-10-16 | 江苏顺达机械设备有限公司 | Quick oil cylinder |
| CN203627397U (en) * | 2013-12-20 | 2014-06-04 | 江苏龙城洪力液压设备有限公司 | Erector telescopic oil cylinder |
| CN204113800U (en) * | 2014-09-24 | 2015-01-21 | 郑州协力建工设备有限公司 | Novel rapid-pressurizing hydraulic cylinder |
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| CN104196818B (en) | 2016-04-06 |
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