CN102606556B - Automatic volume compensated synchronous flow distribution device - Google Patents
Automatic volume compensated synchronous flow distribution device Download PDFInfo
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- CN102606556B CN102606556B CN201210094853.7A CN201210094853A CN102606556B CN 102606556 B CN102606556 B CN 102606556B CN 201210094853 A CN201210094853 A CN 201210094853A CN 102606556 B CN102606556 B CN 102606556B
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Abstract
An automatic volume compensated synchronous flow distribution device comprises a left cylinder barrel and a right cylinder barrel which are symmetrically connected into a whole. A piston rod is sleeved in the left cylinder barrel and the right cylinder barrel, a middle guide sleeve is arranged in the middle of the piston, a left piston and a right piston are arranged in the left cylinder barrel and the right cylinder barrel on two sides of the middle guide sleeve respectively, a left guide sleeve and a right guide sleeve are arranged at two ports of the left cylinder barrel and the right cylinder barrel respectively, and a left radial oil hole and a right radial oil hole are arranged on the walls of the left cylinder barrel and the right cylinder barrel respectively. The barrel wall between the two radial oil holes is provided with a compensation valve set which comprises a valve body, a high-pressure compensation valve and a low-pressure compensation valve. Equivalently, the automatic volume compensated synchronous flow distribution device is formed by mutually serially connecting two double-rod double-acting cylinders with same structures and sizes, and volume synchronization can be precisely realized. Whole-course automatic compensation can be realized by means of the compensation valve sets, and synchronous error accumulation caused by processing errors and internal leakage can be avoided while pressurizing cylinder effect is also avoided. The two cylinders share one piston rod, so that low no-load resistance, high synchronicity, high reliability and long service life of the synchronous cylinders can be guaranteed.
Description
Technical field
The present invention relates to a kind of synchronizer, especially a kind of auto-compensation synchronized splitter hydraulic pressure installation that is applicable to guarantee two executive component synchronous operations.
Background technique
Twin-tub driving mode is widely used in all kinds of machinery, because load, interior friction, internal leakage, machining error etc. are former thereby cause the asynchronous operation of two cylinders, thereby cause supported structure to bear the generation of the problem such as torsional load or driven-mechanism inefficiency and poor reliability, utilizing synchronous fuel tank to realize twin-tub is synchronously one of normal synchronous driving mode adopting of people.At present, the application of synchronous fuel tank mainly contains two kinds of modes, the one, between two operating cylinders, be connected in series common double action oil cylinder realize synchronous or two operating cylinders be directly serially connected realize synchronous, but this can make system works pressure increase exponentially, and because existing choke-out cavity volume must set up exhaust and recharging oil device between two operating cylinders, and be easy to heating, the 2nd, on an oil pocket pipeline of two operating cylinders, respectively set up cylinder diameter or proportional pair bar two-way cylinder identical with piston rod footpath, and the cylinder barrel of these two two bar two-way cylinders of setting up is fixed together, share a piston rod, the deficiency that this mode exists mainly contains: (1) one in two operating cylinders is stuck or arrives in advance stroke end in running if occur for some reason, can make the oil pressure in oil cylinder be multiplied or form high degree of vacuum, the existence of this exactly because " pressurized cylinder effect ", particularly under heavy load operating mode, can cause the generation of ultrahigh pressure phenomenon, cause and damage and the problem such as safety reliability is poor, (2) error free compensation device or compensation effect are undesirable, cannot avoid the synchronization error causing because of machining accuracy, internal leakage etc. to accumulate, and are easy to occur obvious asynchrony phenomenon, thereby cause the abnormal running of driven-mechanism, (3) by two bar double acting cylinders serial connection be connected formed synchronized cylinder to processing, assembling require highly, suppress strength phenomenon otherwise can exist, make that its operational safety is not high, working life is short.
Summary of the invention
Technical problem: the object of the invention is to overcome the deficiency in prior art, provide a kind of simple in structure, synchronism good, operational safety is high, long service life, have the hydraulic shunting device of whole-process automatic self adaptive-compensating function.
Technological scheme: auto-compensation volume synchronized splitter device of the present invention, comprise the left side that symmetry connects as one, right cylinder barrel, left, in right cylinder barrel, be coated with a piston rod, the middle part of piston rod is provided with and is fixed on a left side, the middle guide sleeve of the joint of right cylinder barrel, a left side for middle guide sleeve both sides, in right cylinder barrel, be respectively equipped with the left side being sleeved on piston rod, right piston, left, right cylinder barrel two-port place is respectively equipped with the left side being sleeved on piston rod, guide sleeve, left, guide sleeve is with left, the endoporus ladder of right cylinder barrel coordinates, left, on the barrel of right cylinder barrel, have two radial direction oil hole in left and right, on barrel between two radial direction oil hole, be respectively equipped with a recuperation valve group, described recuperation valve group comprises valve body, high pressure compensation valve and low-voltage compensation valve, high pressure compensation valve is arranged in the forward right side valve opening of valve body, low-voltage compensation valve is arranged in the left rear side valve opening of valve body, described valve body top is respectively processed with one for the aperture of recuperation valve is installed along the cornerwise both sides of upper surface, and be processed with multiple longitudinal holes, transverse holes and upright opening, wherein the first longitudinal hole, first and third transverse holes and first and third upright opening are interconnected, the second longitudinal hole, second, four transverse holes and second, four upright openings are interconnected, and the first longitudinal hole is connected with the right radial direction oil hole of left and right cylinder barrel through oil pipe, the second longitudinal hole is connected with the left radial direction oil hole of left and right cylinder barrel through oil pipe.
Described high pressure compensation valve comprises high pressure spool, high voltage control spring, spring seat, pressure regulating screw and locking nut, and high voltage control spring is located between high pressure spool and spring seat; Described low-voltage compensation valve comprises low pressure spool, low voltage control spring, spring seat, pressure regulating screw and locking nut, and low voltage control spring is located between low pressure spool and spring seat.
Beneficial effect: the present invention be equivalent to by two structures and size all identical two bar two-way cylinders be mutually serially connected, can accurately realize volume synchronous; Adopt high pressure compensation valve and low-voltage compensation valve and rational starting differential pressure setting, can realize whole-process automatic self adaptive-compensating function, both can avoid the synchronization error causing because of machining error, internal leakage to add up, also can avoid the generation of pressurized cylinder effect; By middle guide sleeve, adpting flange and special mounting process, two cylinders share a piston rod, select the sealing that surface friction drag is little, wear resistance is good, guarantee that the unloaded resistance of synchronized cylinder is little, long service life.It is simple in structure, and synchronism is good, and self adaptive-compensating function is strong, and operational safety is high, and long service life has practicability widely.
Brief description of the drawings
Fig. 1 is agent structure schematic diagram of the present invention.
Fig. 2 is recuperation valve group structural drawing of the present invention.
In figure: 1-piston rod; The left cylinder barrel of 2-; The left guide sleeve of 3-; 4-card key; 5-I combination seal; 6-left piston; 7-I support ring; This special envelope of 8-I; 9-adpting flange; Guide sleeve in 10-; The right cylinder barrel of 11-; The right piston of 12-; The right guide sleeve of 13-; 14-high voltage control spring; 15-high pressure spool; 16-low pressure spool; 17-low voltage control spring; 18-valve body; 19-II combination seal; 20-II support ring; 21-Glais ring; 22-III combination seal; This special envelope of 23-II; 24-III support ring; 25-Y RunddichtringO; 26-dust ring.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, auto-compensation volume synchronized splitter device is mainly made up of cylinder barrel assembly, piston rod and piston assembly, guide sleeve assembly and recuperation valve group.Cylinder barrel assembly comprise left cylinder barrel 2, right cylinder barrel 11 with and adpting flange 9, left cylinder barrel 2 and right cylinder barrel 11 have identical structure and size, interior threaded hole is processed in its inside, one end, and the other end external process has outside thread, and the inside of this male end is processed with circular groove; Adpting flange 9 is made up of two flange plate, jam nut nail and attachment screw, and flange plate is screwed on the outside thread of cylinder barrel one end by screw thread, and implements fastening by two backing-up screws; On the barrel of left cylinder barrel 2 and right cylinder barrel 11, be all added with respectively two radial direction oil hole A, B, A1, B1.
Described piston rod and piston assembly comprise piston rod 1, left piston 6 and right piston 12, and piston rod 1 is a long straight-bar, and its middle part is processed with four for the groove of card key is installed; Left piston 6 and right piston 12 have identical structure and size, on its inner hole wall matching with piston rod 1, be added with two grooves, in groove, be respectively placed with an I combination seal 5 that comprises O type circle and anti-extrusion pad, on its periphery matching with cylinder barrel, be processed with three grooves, in intermediate groove, be placed with an II support ring 20, in another two grooves, be respectively placed with a Glais ring 21; Left piston 6 and right piston 12 are arranged on respectively between two circlip grooves of piston rod 1, and implement axially locating by card key 4.
Described guide sleeve assembly comprises left guide sleeve 3, middle guide sleeve 10 and right guide sleeve 13, middle guide sleeve 10 is structurally symmetrical, on the inner hole wall that middle guide sleeve 10 matches with piston rod 1, be processed with four grooves, in groove, be placed with respectively two I support rings 7 and two these special envelopes 8 of I; The middle part of its periphery is processed with a bulge loop, is respectively processed with a groove on the periphery of bulge loop both sides, is respectively placed with an II combination seal 19 that comprises O type circle and anti-extrusion pad in groove; The outside bulge loop of middle guide sleeve 10 is stuck in the circular groove of left and right cylinder barrel 2,11 ends, and by adpting flange 9, three is fixed together; Structure and the size of left guide sleeve 3 and right guide sleeve 13 are all identical, on its inner hole wall matching with piston rod 1, be processed with four grooves, in groove, be placed with respectively dust ring 26, y-type seal ring 25, III support ring 24, this special envelope 23 of II, its periphery is made up of the cylndrical surface of 4 sections of different-diameters, on second segment periphery, be added with outside thread, on the 3rd section of periphery, be added with a groove, in groove, be placed with the III combination seal 22 that comprises O type circle and anti-extrusion pad; Left guide sleeve 3 and right guide sleeve 13 are matched and are fastened together with the threaded one end hole of left cylinder barrel 2 and right cylinder barrel 11 by screw thread respectively.
Two of the described total left recuperation valve group of recuperation valve group and right recuperation valve groups, be separately fixed on left cylinder barrel 2 and right cylinder barrel 11, each recuperation valve group includes valve body 18, high pressure compensation valve and low-voltage compensation valve, high pressure compensation valve is arranged in the forward right side valve opening of valve body 18, and low-voltage compensation valve is arranged in the left rear side valve opening of valve body 18.Described valve body 18 is that a bottom surface is the square valve piece of arc surface, its top is respectively processed with one for the aperture of recuperation valve is installed along the cornerwise both sides of upper surface, also be processed with in addition multiple longitudinal hole a, i, transverse holes b, g, d, h and upright opening c, f, e, j, wherein the first longitudinal hole a, first, three transverse holes b, d and first, three upright opening c, e is interconnected, the second longitudinal hole i, second, four transverse holes g, h and second, four upright opening f, j is interconnected, and the first longitudinal hole a is connected with the right hydraulic fluid port B or the B1 of left cylinder barrel 2 or right cylinder barrel 11 by oil pipe, the second longitudinal hole i is connected with left side hydraulic fluid port A or the A1 of left cylinder barrel 2 or right cylinder barrel 11 by oil pipe.Described high pressure compensation valve comprises high pressure spool 15, high voltage control spring 14, spring seat, pressure regulating screw and locking nut, and high voltage control spring 14 is located between high pressure spool 15 and spring seat; Described low-voltage compensation valve comprises low pressure spool 16, low voltage control spring 17, spring seat, pressure regulating screw and locking nut, and low voltage control spring 17 is located between low pressure spool 16 and spring seat.
The poor △ of set pressure that the spool 15 of high pressure compensation valve is opened
p 0gdetermine as follows:
2
P k ＜△
P 0g＜2 MPa (Ⅰ)
In formula
p koil pressure when being connected and introducing pressure oil and make synchronized cylinder no-load running for hydraulic fluid port A and hydraulic fluid port A1, i.e. when synchronized cylinder no-load running, overcome its internal friction, may exist suppress the required oil pressures such as strength power, return oil pressure.
The poor △ of set pressure that the spool 16 of low-voltage compensation valve is opened
p 0ddetermine as follows:
1.5
P k ＜△
P 0d＜2
P k (Ⅱ)
That is to say, in the time that the pressure difference of the spool 15 of high pressure compensation valve and spool 16 both sides of low-voltage compensation valve meets respectively formula I and formula II, spool is opened.
Working principle and working procedure:
First, synchronous fuel tank of the present invention and two operating cylinders, selector valve are coupled together as follows, hydraulic fluid port A and hydraulic fluid port A1 by synchronous fuel tank are interconnected and are connected with an actuator port of selector valve by oil pipe, hydraulic fluid port B and hydraulic fluid port B1 are connected respectively the large chamber of two operating cylinders, and the loculus of two operating cylinders is interconnected and is connected with another actuator port of selector valve by oil pipe.
When pressure oil is in the time that hydraulic fluid port A and hydraulic fluid port A1 enter in cylinder, left piston 6, right piston 12 and piston rod 1 be operation to the right together, and the oil of discharging from hydraulic fluid port B and hydraulic fluid port B1 enters respectively the large chamber of two clutch release slave cylinders; Because left cylinder barrel 2 is identical with the internal diameter of right cylinder barrel 11, the oily flow of discharging from hydraulic fluid port B is identical with the oily flow of discharging from hydraulic fluid port B1, so two clutch release slave cylinders can synchronously stretch out.In the time that clutch release slave cylinder bounces back, the oil content in its large chamber does not enter respectively in left cylinder barrel 2 and right cylinder barrel 11 from hydraulic fluid port B and hydraulic fluid port B1, and left piston 6, right piston 12 and piston rod 1 be operation left together; Because left cylinder barrel 2 is identical with the internal diameter of right cylinder barrel 11, enter the oily flow of left cylinder barrel 2 from hydraulic fluid port B identical with the oily flow that enters right cylinder barrel 11 from hydraulic fluid port B1, so two clutch release slave cylinders can synchronously bounce back.
When due to machining error, internal leakages etc. are former thereby occur that two clutch release slave cylinders are while stretching out nonsynchronous phenomenon, if the clutch release slave cylinder being connected with hydraulic fluid port B stretches out first on earth, because the fluid in left piston 6 the right oil pockets is now blocked, the oil pressure in hydraulic fluid port A and hydraulic fluid port A1 increases, when this pressure increases to while making the pressure difference of right piston 12 both sides oil pockets meet formula I, the spool 15 of right recuperation valve group mesohigh recuperation valve is opened, make from the pressure oil in hydraulic fluid port A1 through high pressure compensation valve, hydraulic fluid port B1 enters the large chamber of the operating cylinder being connected with this hydraulic fluid port, can further extend out to completely and put in place.Same reason, if the operating cylinder being connected with hydraulic fluid port B1 stretches out first on earth, can make another operating cylinder further reach completely and put in place by the high pressure compensation valve in left recuperation valve group.
When due to machining error, internal leakages etc. are former thereby occur that two clutch release slave cylinders are while bouncing back nonsynchronous phenomenon, if the clutch release slave cylinder being connected with hydraulic fluid port B first retracts to the end, the oil return of another operating cylinder enters the right oil pocket of right piston 12 through hydraulic fluid port B1, continue to push away left piston 6 trend to left movement or oriented left movement together with right piston 12, because left piston 6 the right oil pockets now form certain degree of vacuum in complete closed state, oil pressure in right piston 12 the right oil pockets increases, in the time that its oil pressure increases to that the oil pressure using in right piston 12 both sides oil pockets is poor meets formula II, the spool 16 of right recuperation valve group mesolow recuperation valve is opened, make the oil return of the clutch release slave cylinder being connected with hydraulic fluid port B1 through this low-voltage compensation valve, hydraulic fluid port A1 oil sump tank, make this clutch release slave cylinder completely bounce back and to put in place, also can avoid forming excessive degree of vacuum.Same reason, if the operating cylinder being connected with hydraulic fluid port B1 first retracts to the end, can make another operating cylinder further retract to completely and put in place by the low-voltage compensation valve in left recuperation valve group.
When one in two operating cylinders stretching out or retraction process in be stuck cannot move time, can avoid the generation of pressurized cylinder effect by recuperation valve group.Be described as follows as an example of the jammed situation of operating cylinder that is connected with hydraulic fluid port B example below:
When this clutch release slave cylinder is stretching out while being stuck in process; because the oil in left piston 6 the right oil pockets is blocked; make the oil pressure in hydraulic fluid port A and hydraulic fluid port A1 increase; when this pressure increases to while making the pressure difference of right piston 12 both sides oil pockets meet formula I; the spool 15 of right recuperation valve group mesohigh recuperation valve is opened; make to enter through high pressure compensation valve, hydraulic fluid port B1 from the pressure oil in hydraulic fluid port A1 the large chamber of the operating cylinder being connected with this hydraulic fluid port; can further extend out to completely and put in place; the phenomenon that there will not be oil pressure to be multiplied, plays safety protection effect.Same reason, in the time that this clutch release slave cylinder is stuck in retraction process, can make the oil return of another operating cylinder be unlikely to be blocked by the low-voltage compensation valve in right recuperation valve group, avoids occurring too high degree of vacuum.
Claims (3)
1. an auto-compensation volume synchronized splitter device, is characterized in that: it comprises the left side that symmetry connects as one, right cylinder barrel (2, 11) a, left side, right cylinder barrel (2, 11) in, be coated with a piston rod (1), the middle part of piston rod (1) is provided with and is fixed on a left side, right cylinder barrel (2, 11) the middle guide sleeve (10) of joint, a left side for middle guide sleeve (10) both sides, right cylinder barrel (2, 11) in, be respectively equipped with the left side being sleeved on piston rod (1), right piston (6, 12) a, left side, right cylinder barrel (2, 11) two-port place is respectively equipped with the left side being sleeved on piston rod (1), right guide sleeve (3, 13) a, left side, right guide sleeve (3, 13) with left, right cylinder barrel (2, 11) endoporus ladder coordinates, a left side, right cylinder barrel (2, 11) on barrel, have two radial direction oil hole in left and right, be respectively equipped with a recuperation valve group on the barrel between two radial direction oil hole, described recuperation valve group comprises valve body (18), high pressure compensation valve and low-voltage compensation valve, high pressure compensation valve is arranged in the forward right side valve opening of valve body (18), and low-voltage compensation valve is arranged in the left rear side valve opening of valve body (18), described valve body (18) top is respectively processed with one for the aperture of recuperation valve is installed along the cornerwise both sides of upper surface, and be processed with multiple longitudinal hole (a, i), transverse holes (b, g, d, and upright opening (c h), f, e, j), wherein the first longitudinal hole (a), first, three transverse holes (b, d) He the first, three upright opening (c, e) be interconnected, the second longitudinal hole (i), second, four transverse holes (g, h) He the second, four upright opening (f, j) be interconnected, and the first longitudinal hole (a) is through oil pipe and a left side, right cylinder barrel (2, 11) right radial direction oil hole is connected, the second longitudinal hole is (i) connected with the left radial direction oil hole of left and right cylinder barrel (2,11) through oil pipe.
2. auto-compensation volume synchronized splitter device according to claim 1, it is characterized in that: described high pressure compensation valve comprises high pressure spool (15), high voltage control spring (14), spring seat, pressure regulating screw and locking nut, and high voltage control spring (14) is located between high pressure spool (15) and spring seat.
3. auto-compensation volume synchronized splitter device according to claim 1, it is characterized in that: described low-voltage compensation valve comprises low pressure spool (16), low voltage control spring (17), spring seat, pressure regulating screw and locking nut, and low voltage control spring (17) is located between low pressure spool (16) and spring seat.
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| CN201210094853.7A CN102606556B (en) | 2012-03-31 | 2012-03-31 | Automatic volume compensated synchronous flow distribution device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210094853.7A CN102606556B (en) | 2012-03-31 | 2012-03-31 | Automatic volume compensated synchronous flow distribution device |
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| CN102606556A CN102606556A (en) | 2012-07-25 |
| CN102606556B true CN102606556B (en) | 2014-06-11 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103398036A (en) * | 2013-08-21 | 2013-11-20 | 安徽永大农业科技发展有限公司 | Hydraulic cylinder balancing device for high-temperature on-line sterilizer |
| PL239757B1 (en) * | 2018-04-10 | 2022-01-03 | Politechnika Lodzka | Pneumatic actuator |
| PL238320B1 (en) * | 2018-04-10 | 2021-08-09 | Politechnika Lodzka | Pneumatic actuator |
| CN110878570A (en) * | 2019-11-26 | 2020-03-13 | 大连交通大学 | Quick replacement device for tail end actuating mechanism of emergency rescue equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4446538A1 (en) * | 1994-12-24 | 1996-06-27 | Bosch Gmbh Robert | Hydraulic tensioning device e.g. for programmable machine tool |
| CN201212849Y (en) * | 2008-07-01 | 2009-03-25 | 徐州天地重型机械制造有限公司 | Energy saving type hydraulic sealed experiment platform |
| CN201306328Y (en) * | 2008-12-09 | 2009-09-09 | 覃德伟 | Tandem type combined hydro-cylinder |
| CN202545406U (en) * | 2012-03-31 | 2012-11-21 | 徐州铭硕机械科技有限公司 | Synchronous shunt device with automatic volume compensation function |
-
2012
- 2012-03-31 CN CN201210094853.7A patent/CN102606556B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4446538A1 (en) * | 1994-12-24 | 1996-06-27 | Bosch Gmbh Robert | Hydraulic tensioning device e.g. for programmable machine tool |
| CN201212849Y (en) * | 2008-07-01 | 2009-03-25 | 徐州天地重型机械制造有限公司 | Energy saving type hydraulic sealed experiment platform |
| CN201306328Y (en) * | 2008-12-09 | 2009-09-09 | 覃德伟 | Tandem type combined hydro-cylinder |
| CN202545406U (en) * | 2012-03-31 | 2012-11-21 | 徐州铭硕机械科技有限公司 | Synchronous shunt device with automatic volume compensation function |
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Effective date of registration: 20170727 Address after: 221000, Jiangsu, Xuzhou province Copper Mt. District Three Fort four fort village detention house south next door Patentee after: Xuzhou Jinding Hengli Hydraulic Parts Co. Ltd. Address before: 221116 No. 23, Beijing North Road, Copper Mt. Economic Development Zone, Jiangsu, Xuzhou 9101 Patentee before: Xuzhou Mingshuo Machinery Technology Co., Ltd. |