CN102996563A - Oil cylinder group capable of realizing synchronous movement - Google Patents
Oil cylinder group capable of realizing synchronous movement Download PDFInfo
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- CN102996563A CN102996563A CN2012105247891A CN201210524789A CN102996563A CN 102996563 A CN102996563 A CN 102996563A CN 2012105247891 A CN2012105247891 A CN 2012105247891A CN 201210524789 A CN201210524789 A CN 201210524789A CN 102996563 A CN102996563 A CN 102996563A
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Abstract
The invention discloses an oil cylinder group capable of realizing synchronous movement. The oil cylinder group capable of realizing synchronous movement comprises a single piston rod oil cylinder, one or more double piston rod oil cylinders, a plunger oil cylinder and a reversing valve. The reversing valve, the single piston rod oil cylinder, the double piston rod oil cylinders and the plunger oil cylinder are sequentially connected. The single piston rod oil cylinder and the double piston rod oil cylinders are both provided with two main hydraulic fluid ports. A main hydraulic fluid port is arranged on a cylinder wall of the plunger oil cylinder. Compensating systems are arranged on the main hydraulic fluid ports of the single piston rod oil cylinder, the double piston rod oil cylinders and the plunger oil cylinder. The oil cylinder group capable of realizing synchronous movement provided by the invention has the advantages that a group of oil cylinders can move synchronously at a high degree, the cost of the oil cylinder system is low and the like.
Description
Technical field
The present invention relates to the oil cylinder group that a kind of energy realization is synchronized with the movement.
Background technique
In current machinery industry, there are a lot of occasions to require the synchronization motion of two oil cylinders at industry equipment, in order to can improve load.Ordinary circumstance all is to need to use multiple executive component to overcome the difference in load, friction, leakage, workmanship, the malformation and guarantee in motion synchronous, its form has a lot, such as by mechanically contact, syncmotor, five equilibrium synchronous valve etc., can they be complicated and simple to synchronization accuracy, structure, the cost height, prevent under the deviation or eliminate on the influence degree of the accumulation of error etc. different.
In the prior art, a plurality of oil hydraulic cylinders usually need will produce the problems such as complex structure, poor synchronization thus with a plurality of valve controls in the synchronous fuel tank.In the working procedure of synchronous fuel tank, owing to reasons such as load condition are different, pipe resistance is variant, being synchronized with the movement of multi-cylinder is to be difficult to realize.Especially when load difference was larger, the distance between the oil cylinder was larger, and stroke is larger, and nonsynchronous phenomenon can be more serious.To the demanding occasion of synchronism, highi degree of accuracy equipment such as configuration bit displacement sensor and proportional servo valve usually, cost is high, and the turbidity test of fluid are also had very strict requirement, and the control difficulty is large.
Summary of the invention
The present invention is the deficiency that exists in the above-mentioned prior art for avoiding, and provides a kind of energy to realize the oil cylinder group that is synchronized with the movement, with the synchronism that improves Multi-cylinder and the cost that reduces the synchronous fuel tank system.
The present invention be the technical solution problem by the following technical solutions.
The oil cylinder group that the energy realization is synchronized with the movement, its structural feature is to comprise single-piston rod oil cylinder, one or more double rod cylinder, plunger cylinder and selector valve; Described selector valve, single-piston rod oil cylinder, double rod cylinder are connected with plunger cylinder and are connected; Be equipped with two main hydraulic fluid ports on described single-piston rod oil cylinder, the double rod cylinder, the cylinder barrel wall of described plunger cylinder is provided with a main hydraulic fluid port; Be equipped with bucking-out system on each main hydraulic fluid port of described single-piston rod oil cylinder, double rod cylinder and plunger cylinder.
The structural feature of the oil cylinder group that energy realization of the present invention is synchronized with the movement also is:
Be provided with first piston in the described single-piston rod oil cylinder, described first piston is provided with a piston rod, and the cylinder barrel wall two ends of described single-piston rod oil cylinder are respectively equipped with the first main hydraulic fluid port and the second main hydraulic fluid port; Be provided with the second piston in the described double rod cylinder, the both sides of described the second piston respectively are provided with a piston rod, and the cylinder barrel wall two ends of described double rod cylinder are respectively equipped with the 3rd main hydraulic fluid port and the 4th main hydraulic fluid port; Be provided with the 3rd piston in the described plunger cylinder, described the 3rd piston is provided with a piston rod, and the cylinder barrel wall of described plunger cylinder is provided with the 5th main hydraulic fluid port; Described selector valve is connected with the first main hydraulic fluid port of described single-piston rod oil cylinder by oil pipe; The second main hydraulic fluid port of described single-piston rod oil cylinder is connected with the 3rd main hydraulic fluid port of described double rod cylinder by oil pipe; The 4th main hydraulic fluid port of described double rod cylinder is connected with the 5th main hydraulic fluid port of described plunger cylinder.
Described main hydraulic fluid port comprises the main oil-hole of radial penetration cylinder barrel wall; Described bucking-out system comprises compensate opening, port connection, the first seal ring and the second seal ring; Be provided with the stepped shaft inner chamber that axially runs through described oil head joint along described oil head joint in the described port connection, an end of the close cylinder barrel wall of described stepped shaft inner chamber is buffer cavity; Described compensate opening is located on the cylinder barrel wall and along the described cylinder barrel wall of the radial penetration of cylinder barrel wall, and described main oil-hole, compensate opening all be positioned at buffer cavity, can enter oil cylinder by main oil-hole, compensate opening so that enter the hydraulic oil of port connection; Described main oil-hole diameter is greater than the diameter of described compensate opening, buffer cavity along the axial length L of cylinder barrel wall greater than the ultimate range D between main oil-hole and the compensate opening, so that buffer cavity can cover main oil-hole and compensate opening simultaneously, though main oil-hole, compensate opening all are positioned at buffer cavity; Described the first seal ring and the second seal ring all are sheathed on the piston, and the spacing A between described main oil-hole and the compensate opening is greater than the spacing B between described the first seal ring and the second seal ring.
The diameter of described main oil-hole and the diameter ratio of compensate opening are between 5:1 ~ 6.25:1; Spacing A between described main oil-hole and the compensate opening is than the large 6mm～10mm of spacing B between described the first seal ring and the second seal ring.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The oil cylinder group that energy realization of the present invention is synchronized with the movement must have a plunger case and a double-action single-piston rod oil cylinder in one group oil cylinder, one or more double-action double rod cylinders can be arranged.These oil cylinders are cascaded, and fluid flows in this group oil cylinder, just can promote simultaneously whole oil cylinders and do and be synchronized with the movement when the fluid active area of each oil cylinder equates.In order to solve before the motion feed liquor problem and to eliminate accumulated error, added respectively a bucking-out system at the oil inlet and outlet of oil cylinder, thereby guaranteed being synchronized with the movement of this group oil cylinder, have low cost of manufacture, higher synchronization motion, and can automatically reset characteristics.The oil cylinder group that energy realization of the present invention is synchronized with the movement, need not to be equipped with the highi degree of accuracy equipment such as displacement transducer and proportional servo valve and can realize being synchronized with the movement of Multi-cylinder, have can guarantee a group oil cylinder can keep the height be synchronized with the movement, the cylinder system low cost and other advantages.
Description of drawings
Fig. 1 is the hydraulic system schematic representation that can realize the oil cylinder group be synchronized with the movement of the present invention.
Fig. 2 is the structural drawing that can realize the bucking-out system of the oil cylinder group be synchronized with the movement of the present invention.
Fig. 3 is the partial enlarged drawing among Fig. 2.
Label in accompanying drawing 1～accompanying drawing 3: 1 single-piston rod oil cylinder, 101 first pistons, 102 first main hydraulic fluid ports, 103 second main hydraulic fluid ports, 104 rod chambers, 105 rodless cavities, 2 double rod cylinders, 201 second pistons, 202 the 3rd main hydraulic fluid ports, 203 the 4th main hydraulic fluid ports, 204 upper boom chambeies, 205 lower beam chambeies, 3 plunger cylinders, 301 the 3rd pistons, 302 the 5th main hydraulic fluid ports, 4 selector valves, 5 piston rods, 6 cylinder barrel walls, 7 oil pipes, 8 main oil-holes, 9 compensate openings, 10 port connections, 11 first seal rings, 12 second seal rings, 13 stepped shaft inner chambers, 14 buffer cavitys.
Below pass through embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1～accompanying drawing 3, can realize the oil cylinder group that is synchronized with the movement comprising single-piston rod oil cylinder 1, one or more double rod cylinder 2, plunger cylinder 3 and selector valve 4; Described selector valve 4, single-piston rod oil cylinder 1, double rod cylinder 2 are connected with plunger cylinder successively and are connected; Be equipped with two main hydraulic fluid ports on described single-piston rod oil cylinder 1, the double rod cylinder 2, the cylinder barrel wall of described plunger cylinder 3 is provided with a main hydraulic fluid port; Be equipped with bucking-out system on each main hydraulic fluid port of described single-piston rod oil cylinder 1, double rod cylinder 2 and plunger cylinder 3.
Be provided with first piston 101 in the described single-piston rod oil cylinder 1, described first piston 101 is provided with a piston rod 5, and cylinder barrel wall 6 two ends of described single-piston rod oil cylinder 1 are respectively equipped with the first main hydraulic fluid port 102 and the second main hydraulic fluid port 103; Be provided with the second piston 201 in the described double rod cylinder 2, the both sides of described the second piston 201 respectively are provided with a piston rod 5, and cylinder barrel wall 6 two ends of described double rod cylinder 2 are respectively equipped with the 3rd main hydraulic fluid port 202 and the 4th main hydraulic fluid port 203; Be provided with the 3rd piston 301 in the described plunger cylinder 3, described the 3rd piston 301 is provided with a piston rod 5, and the cylinder barrel wall 6 of described plunger cylinder 3 is provided with the 5th main hydraulic fluid port 302;
Described selector valve 4 is connected with the first main hydraulic fluid port 102 of described single-piston rod oil cylinder 1 by oil pipe 7; The second main hydraulic fluid port 103 of described single-piston rod oil cylinder 1 is connected with the 3rd main hydraulic fluid port 202 of described double rod cylinder 2 by oil pipe 7; The 4th main hydraulic fluid port 203 of described double rod cylinder 2 is connected with the 5th main hydraulic fluid port 302 of described plunger cylinder 3.
Described main hydraulic fluid port comprises the main oil-hole 8 of radial penetration cylinder barrel wall; Described bucking-out system comprises compensate opening 9, port connection 10, the first seal ring 11 and the second seal ring 12; Be provided with the stepped shaft inner chamber 13 that axially runs through described oil head joint 10 along described oil head joint 10 in the described port connection 10, an end of the close cylinder barrel wall 6 of described stepped shaft inner chamber 13 is buffer cavity 14; Described compensate opening 9 is located on the cylinder barrel wall 6 and along the described cylinder barrel wall 6 of the radial penetration of cylinder barrel wall 6, and described main oil-hole 8, compensate opening 9 all be positioned at buffer cavity 14, can enter oil cylinder by main oil-hole, compensate opening so that enter the hydraulic oil of port connection; Described main oil-hole 8 diameters are greater than the diameter of described compensate opening 9, buffer cavity 14 along the axial length L of cylinder barrel wall 6 greater than the ultimate range D between main oil-hole 8 and the compensate opening 9, so that buffer cavity can cover main oil-hole and compensate opening simultaneously, though main oil-hole, compensate opening all are positioned at buffer cavity; Described the first seal ring 11 and the second seal ring 12 all are sheathed on the piston, and the spacing A between described main oil-hole 8 and the compensate opening 9 is greater than the spacing B between described the first seal ring 11 and the second seal ring 12.
The diameter ratio of the diameter of described main oil-hole 8 and compensate opening 9 is between 5:1 ~ 6.25:1; Spacing A between described main oil-hole 8 and the compensate opening 9 is than the large 6mm～10mm of spacing B between described the first seal ring 11 and the second seal ring 12.
Port connection is welded on the cylinder barrel wall outer surface, and main oil-hole, compensate opening are beaten at the cylinder barrel wall and be positioned at buffer cavity.Two seal rings all are set on the piston.The main oil-hole diameter is greater than the diameter of compensate opening.Buffer cavity along the axial length L of cylinder barrel wall greater than the ultimate range D between main oil-hole and compensate opening.Spacing A between main oil-hole and the compensate opening is greater than the spacing B between described the first seal ring and the second seal ring.
If spacing B just causes easily that piston seal is tight, leaks in the oil cylinder less than 6mm, and is not easy to Piston Machining.If spacing is can produce extra resistance to cylinder movement after oil cylinder is full of hydraulic oil to cause unnecessary energy consumption greater than 10mm at compensate opening, and the not compact increase manufacture difficulty of cylinder structure, thereby spacing B is controlled between 6mm～10mm, be more suitable for using and making, take 8mm as best.The diameter ratio of the diameter of main oil-hole 8 and compensate opening 9 is less than the words of 5:1, because thereby rod chamber 104 has extra pressure to cause the oil cylinder difficulty in starting, and diameter is than excessive words, can cause also starting under the underfill hydraulic pressure oil condition in whole system, system equipment is caused damage, if and compensate opening crosses conference and cause seal ring to be scratched when passing compensate opening, cause poorly sealed.In the implementation, the size of main oil-hole 8 is determined that by the oil cylinder internal diameter main oil-hole 8 too small meetings produce turbulent flow in the running of hydraulic power oil process.
When the first main oil port oil-feed of hydraulic oil from single-piston rod oil cylinder 1, in the cylinder cavity of the both sides of the piston that main oil-hole and the cushion hole of hydraulic oil by the first main hydraulic fluid port enters respectively single-piston rod oil cylinder 1, the cavity of piston top is rod chamber 104, and the cavity of piston below is rodless cavity 105.Enter hydraulic oil in the rod chamber 104 of piston top of single-piston rod oil cylinder 1 enter again double rod cylinder by the second main hydraulic fluid port of single-piston rod oil cylinder 1 the 3rd main hydraulic fluid port, then in the cylinder cavity of the both sides of the main oil-hole of the 3rd main hydraulic fluid port by double rod cylinder and the piston that cushion hole enters respectively double rod cylinder; Double rod cylinder is provided with two piston rods, and respectively there is a piston rod both sides of piston, and the top cavity of its piston is upper boom chamber 204, and the lower cavity of the piston of double rod cylinder is lower beam chamber 205.If a plurality of double rod cylinders are arranged, fluid can enter in each double rod cylinder successively, so that whole oil cylinder group is full of hydraulic oil.
After in the oil cylinder group, being full of hydraulic oil, when reaching certain value, oil pressure begins to promote cylinder movement.The piston of single-piston rod oil cylinder moves upward, compress its rod chamber 104, hydraulic oil in its rod chamber 104 is pressed into the lower beam chamber 205 of double rod cylinder by the second main hydraulic fluid port, oil pipe and the 3rd main hydraulic fluid port, so that the piston of double rod cylinder moves upward, the piston of double rod cylinder is pressed into plunger cylinder with the hydraulic oil in the upper boom chamber 204 of double rod cylinder, thereby promote the piston movement of plunger cylinder, so that hydraulic system keeps being synchronized with the movement.When resetting, selector valve is allocated to oppositely, and the piston of plunger cylinder is under the effect of piston deadweight and induced pressure, and the piston of plunger cylinder descends, hydraulic oil in the plunger cylinder is pressed into double rod cylinder and single-piston rod oil cylinder successively, thereby pushing piston is got back to initial position.
Because in the hydraulic system of synchronized cylinder, system's charge oil pressure is the twice of conventional system, directly enter in the oil cylinder for fear of high pressure oil, added a buffer cavity at the port connection place, and the cylinder barrel wall in buffer cavity is beaten small one and large one two holes, macropore is main oil-hole, aperture is compensate opening, the diameter ratio of main oil-hole and compensate opening is between 5:1 ~ 6.25:1, be preferably 5:1,6:1 or 6.25:1, and the distance between main oil-hole and the compensate opening is slightly greater than the spacing between the first seal ring and the second seal ring, thereby so that when piston oil-cylinder starts, by bucking-out system breakout pressure is raise, reduce creeping when starting, the effective Displacement error of eliminating when starting, thus and before startup, the synchronous fuel tank group is carried out the synchronous of oil-filled assurance oil cylinder startup.
Claims (4)
1. can realize it is characterized in that the oil cylinder group that is synchronized with the movement, comprise single-piston rod oil cylinder (1), one or more double rod cylinder (2), plunger cylinder (3) and selector valve (4); Described selector valve (4), single-piston rod oil cylinder (1), double rod cylinder (2) are connected 3 with plunger cylinder) connect successively; Be equipped with two main hydraulic fluid ports on described single-piston rod oil cylinder (1), the double rod cylinder (2), the cylinder barrel wall of described plunger cylinder (3) is provided with a main hydraulic fluid port; Be equipped with bucking-out system on each main hydraulic fluid port of described single-piston rod oil cylinder (1), double rod cylinder (2) and plunger case (3).
2. the oil cylinder group be synchronized with the movement of realizing according to claim 1, it is characterized in that, be provided with first piston (101) in the described single-piston rod oil cylinder (1), described first piston (101) is provided with a piston rod (5), and cylinder barrel wall (6) two ends of described single-piston rod oil cylinder (1) are respectively equipped with the first main hydraulic fluid port (102) and the second main hydraulic fluid port (103); Be provided with the second piston (201) in the described double rod cylinder (2), the both sides of described the second piston (201) respectively are provided with a piston rod (5), and cylinder barrel wall (6) two ends of described double rod cylinder (2) are respectively equipped with the 3rd main hydraulic fluid port (202) and the 4th main hydraulic fluid port (203); Be provided with the 3rd piston (301) in the described plunger cylinder (3), described the 3rd piston (301) is provided with a piston rod (5), and the cylinder barrel wall (6) of described plunger cylinder (3) is provided with the 5th main hydraulic fluid port (302).
Described selector valve (4) is connected with the first main hydraulic fluid port (102) of described single-piston rod oil cylinder (1) by oil pipe (7); The second main hydraulic fluid port (103) of described single-piston rod oil cylinder (1) is connected with the 3rd main hydraulic fluid port (202) of described double rod cylinder (2) by oil pipe (7); The 4th main hydraulic fluid port (203) of described double rod cylinder (2) is connected with the 5th main hydraulic fluid port (302) of described plunger cylinder (3).
3. the oil cylinder group be synchronized with the movement of realizing according to claim 1, described main hydraulic fluid port comprises the main oil-hole (8) of radial penetration cylinder barrel wall; Described bucking-out system comprises compensate opening (9), port connection (10), the first seal ring (11) and the second seal ring (12); Be provided with the stepped shaft inner chamber (13) along described oil head joint of axially running through of described oil head joint (10) (10) in the described port connection (10), an end of the close cylinder barrel wall (6) of described stepped shaft inner chamber (13) is buffer cavity (14); It is upper and along the described cylinder barrel wall of the radial penetration of cylinder barrel wall (6) (6) that described compensate opening (9) is located at cylinder barrel wall (6), and described main oil-hole (8), compensate opening (9) all are positioned at buffer cavity (14); Described main oil-hole (8) diameter is greater than the diameter of described compensate opening (9), buffer cavity (14) along the axial length L of cylinder barrel wall (6) greater than the ultimate range D between main oil-hole (8) and the compensate opening (9); Described the first seal ring (11) and the second seal ring (12) all are sheathed on the piston, and the spacing A between described main oil-hole (8) and the compensate opening (9) is greater than the spacing B between described the first seal ring (11) and the second seal ring (12).
4. the oil cylinder group be synchronized with the movement of realizing according to claim 1 is characterized in that the diameter ratio of the diameter of described main oil-hole (8) and compensate opening (9) can be between 5:1 ~ 6.25:1; Spacing A between described main oil-hole (8) and the compensate opening (9) is than the large 6mm～10mm of spacing B between described the first seal ring (11) and the second seal ring (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105247891A CN102996563A (en) | 2012-12-07 | 2012-12-07 | Oil cylinder group capable of realizing synchronous movement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105247891A CN102996563A (en) | 2012-12-07 | 2012-12-07 | Oil cylinder group capable of realizing synchronous movement |
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| CN102996563A true CN102996563A (en) | 2013-03-27 |
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| CN2012105247891A Pending CN102996563A (en) | 2012-12-07 | 2012-12-07 | Oil cylinder group capable of realizing synchronous movement |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715923A (en) * | 2014-11-26 | 2017-05-24 | 三菱日立电力系统株式会社 | Hydraulic drive device for steam valve, combined steam valve and steam turbine |
| CN108488122A (en) * | 2018-03-30 | 2018-09-04 | 江苏恒立液压科技有限公司 | Multi-cylinder synchronization hydraulic system |
| CN109458369A (en) * | 2018-12-29 | 2019-03-12 | 浙江大学舟山海洋研究中心 | Three cylinder synchronization lifting mechanisms |
| CN110228768A (en) * | 2019-05-30 | 2019-09-13 | 江苏智库物流科技有限公司 | A kind of synchronization lifting mechanism of heavy duty four-way shuttle robot |
| CN110578727A (en) * | 2019-09-25 | 2019-12-17 | 张家口凯航液压科技有限公司 | load-sensitive multi-cylinder synchronous control method |
| CN117006119A (en) * | 2023-08-22 | 2023-11-07 | 埃锡尔(山东)智能设备有限公司 | Multi-cylinder servo synchronous hydraulic device |
| CN117267192A (en) * | 2023-11-07 | 2023-12-22 | 成都物天物联网科技有限责任公司 | Synchronous lifting system of vehicle-mounted exchange box |
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| CN202023773U (en) * | 2011-03-29 | 2011-11-02 | 德州华海石油机械有限公司 | Automatic reversing bidirectional hydraulic transmission device |
| CN202914431U (en) * | 2012-12-07 | 2013-05-01 | 合肥长源液压股份有限公司 | Oil cylinder group capable of moving synchronously |
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| CN2057855U (en) * | 1989-04-21 | 1990-06-06 | 吉林大学 | Far infrared negative pressure massage apparatus |
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| CN202914431U (en) * | 2012-12-07 | 2013-05-01 | 合肥长源液压股份有限公司 | Oil cylinder group capable of moving synchronously |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715923A (en) * | 2014-11-26 | 2017-05-24 | 三菱日立电力系统株式会社 | Hydraulic drive device for steam valve, combined steam valve and steam turbine |
| US10605116B2 (en) | 2014-11-26 | 2020-03-31 | Mitsubishi Hitachi Power Systems, Ltd. | Hydraulic driving device for steam valve, combined steam valve, and steam turbine |
| CN108488122A (en) * | 2018-03-30 | 2018-09-04 | 江苏恒立液压科技有限公司 | Multi-cylinder synchronization hydraulic system |
| CN109458369A (en) * | 2018-12-29 | 2019-03-12 | 浙江大学舟山海洋研究中心 | Three cylinder synchronization lifting mechanisms |
| CN109458369B (en) * | 2018-12-29 | 2023-10-27 | 浙江大学舟山海洋研究中心 | Three-cylinder synchronous lifting mechanism |
| CN110228768A (en) * | 2019-05-30 | 2019-09-13 | 江苏智库物流科技有限公司 | A kind of synchronization lifting mechanism of heavy duty four-way shuttle robot |
| CN110578727A (en) * | 2019-09-25 | 2019-12-17 | 张家口凯航液压科技有限公司 | load-sensitive multi-cylinder synchronous control method |
| CN117006119A (en) * | 2023-08-22 | 2023-11-07 | 埃锡尔(山东)智能设备有限公司 | Multi-cylinder servo synchronous hydraulic device |
| CN117006119B (en) * | 2023-08-22 | 2024-01-23 | 埃锡尔(山东)智能设备有限公司 | Multi-cylinder servo synchronous hydraulic device |
| CN117267192A (en) * | 2023-11-07 | 2023-12-22 | 成都物天物联网科技有限责任公司 | Synchronous lifting system of vehicle-mounted exchange box |
| CN117267192B (en) * | 2023-11-07 | 2024-03-19 | 成都物天物联网科技有限责任公司 | Synchronous lifting system of vehicle-mounted exchange box |
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Application publication date: 20130327 |