CN103758816B - Range-adjustable integrated series cylinder - Google Patents
Range-adjustable integrated series cylinder Download PDFInfo
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- CN103758816B CN103758816B CN201410035297.5A CN201410035297A CN103758816B CN 103758816 B CN103758816 B CN 103758816B CN 201410035297 A CN201410035297 A CN 201410035297A CN 103758816 B CN103758816 B CN 103758816B
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Abstract
The invention discloses range-adjustable integrated series cylinder, it comprises body in secondary piston, back piston, front-bank rotor housing, rear-bank rotor housing, piston rod I, piston rod II, cylinder precursor, cylinder, cylinder cap and one group of pull bar, it is characterized in that the front oil hydraulic cylinder of the compositions such as body in cylinder precursor, front-bank rotor housing, cylinder, secondary piston, piston rod I; Oil hydraulic cylinder after the composition such as body, rear-bank rotor housing, cylinder cap, back piston, piston rod II in cylinder; Before and after two oil hydraulic cylinders be cascaded by body in cylinder and piston rod II and one group of pull bar and form series connection cylinder.Range-adjustable integrated series cylinder proposed by the invention, synchronization accuracy is high, offset load resistance is strong, and stroke is adjustable, and then directly can control plate bending machine stroke adjustment amount; This range-adjustable integrated series cylinder degree of integrationization is high, simplifies hydraulic system, and control ability is strong, safe and reliable.
Description
Technical field
The present invention relates to a kind of oil hydraulic cylinder, especially a kind of hydraulic pressure upper dynamic plate bending machine hydraulic control system range-adjustable integrated series cylinder.
Background technique
Present hydrolic plate bender control system mainly electro-hydraulic servo control and electromechanical stop, torsion shaft controls this two kinds of hydraulic control systems, and the former price is high, and adjustment, usage requirement is high; The latter's precision is low, and offset load resistance is poor.
Summary of the invention
Technical problem to be solved by this invention is to provide range-adjustable integrated series cylinder, and double-acting hydraulic cylinder synchronization accuracy is high, offset load resistance strong not only to control two, and stroke is adjustable, and then directly can control plate bending machine stroke adjustment amount; This range-adjustable integrated series cylinder degree of integrationization is high, and control ability is strong, safe and reliable.
For realizing above-mentioned technical purpose, the present invention proposes range-adjustable integrated series cylinder, comprise body in secondary piston, back piston, front-bank rotor housing, rear-bank rotor housing, piston rod I, piston rod II, cylinder precursor, cylinder, cylinder cap and one group of pull bar, in cylinder precursor, front-bank rotor housing, cylinder, body, secondary piston, piston rod I form front oil hydraulic cylinder, oil hydraulic cylinder after the composition such as body, rear-bank rotor housing, cylinder cap, back piston, piston rod II in cylinder, before and after two oil hydraulic cylinders be cascaded by body in cylinder and piston rod II and one group of pull bar and form series connection cylinder, front-bank rotor housing, rear-bank rotor housing internal diameter are identical, piston rod I is identical with piston rod II external diameter, piston rod I left end external diameter coordinates with front-bank rotor housing hole, and dust-proof by dust ring, U-shaped circle, slip ring type combined sealing seal, piston rod I right-hand member is provided with Step Shaft and stud, and its Step Shaft external diameter coordinates with secondary piston hole, and is sealed by O type circle, its stud and piston rod II left end tapped hole lock, and are fastened on by secondary piston between piston rod I and piston rod II, secondary piston coordinates with front-bank rotor housing hole, and is sealed by slip ring type combined sealing, and piston rod II left end coordinates with body opening in cylinder, and is sealed by U-shaped circle, piston rod II right-hand member is processed with Step Shaft and stud, and its Step Shaft external diameter coordinates with back piston hole, and by seal with O ring, its stud and locking nut screwing, be fastened on back piston between piston rod II and locking nut, back piston coordinates with rear-bank rotor housing hole, and sealed by slip ring type combined sealing, cylinder precursor, front-bank rotor housing, in cylinder between body and cylinder in body, rear-bank rotor housing, by seal with O ring between cylinder cap, before, rear two-piston is connected by piston rod I and piston rod II and locking nut, on an axis fastening, and be isolated in front-bank rotor housing and rear-bank rotor housing, in cylinder, body bottom arranges PB hydraulic fluid port, top arranges T hydraulic fluid port, rear-bank rotor housing opens PA hydraulic fluid port, PA and PB hydraulic fluid port ft connection, piston rod I has PD hydraulic fluid port, piston rod II has PC hydraulic fluid port, PC, PD two hydraulic fluid port flow-off is connected by oil pipe and connects T hydraulic fluid port, the direct connected tank of T hydraulic fluid port.When hydraulic oil enters secondary piston, back piston right-side cavity respectively by PA and PB hydraulic fluid port, forward and backward two-piston is synchronously to left movement; On the left of forward and backward two-piston, chamber hydraulic oil is discharged respectively by PC and PD hydraulic fluid port, and enters hydraulic pressure upper dynamic plate bending machine two double-acting hydraulic cylinder rod chambers respectively, two double-acting hydraulic cylinder backhauls.Because forward and backward two cylinder diameters are identical, piston rod I is identical with piston rod II external diameter, and forward and backward two-piston is synchronized with the movement in addition, so the hydraulic oil unit time inner volume of being discharged respectively by PC with PD hydraulic fluid port is identical, that is flow is identical; When two double-acting hydraulic cylinder cylinder processes, rod chamber hydraulic oil enters chamber on the left of forward and backward two-piston respectively by PC and PD hydraulic fluid port, forward and backward two-piston synchronously moves right, and forward and backward two-piston right-side cavity hydraulic oil is discharged respectively by PC and PD hydraulic fluid port; Due in forward and backward two cylinder bodies through identical, piston rod I is identical with piston rod II external diameter, in addition forward and backward two-piston is synchronized with the movement and the effect of hydraulic control system back pressure, so the hydraulic oil unit time inner volume entered respectively by PC with PD hydraulic fluid port is identical, that is flow is identical; If through identical in hydraulic pressure upper dynamic plate bending machine two double-acting hydraulic cylinder cylinders, piston rod external diameter is identical, so two double-acting hydraulic cylinders will when cylinder process, cylinder backhaul synchronized movement.When two double-acting hydraulic cylinder unbalance loadings occur in cylinder working stroke, due to piston-rodless on the right side of back piston, hydraulic control system back pressure effect in addition, range-adjustable integrated series cylinder forces two double-acting hydraulic cylinders to be synchronized with the movement.
Described range-adjustable integrated series cylinder also comprises adjusting device for travel, it comprises screw rod, worm gear, worm screw, round nut, transmission case body, axle sleeve I, shaft sleeve II, anti-adsorption type thrust washer, adjustment pad, setscrew nut, key, adjusting nut, rotary shaft lip seal and actuating motor and encoder, coordinate in cylinder precursor left end hole and press-fit shaft sleeve II, screw rod left end is processed with Step Shaft and screw thread, and there is inner hexagon spanner hole end, adjustment pad is through on screw rod by screw rod left end, screw rod passes cylinder precursor left end shaft sleeve II hole by cylinder precursor sliding fit inside, and then by anti-adsorption type thrust washer, worm gear is through screw rod left end successively, round nut is tightened on screw rod left end screw thread, key is had to be connected between worm gear with screw rod, and be fastened on screw rod by round nut, by adjustment adjustment pad, ensure between worm gear and anti-adsorption type thrust washer and adjust gap between pad and screw rod shoulder, make screw rod rotatable and axial float in design tolerance, the unthreaded hole of tapped hole and band keyway is had at piston rod I left end, setscrew nut diameter of bore is greater than screw rod right-hand member trapezoidal thread nominal diameter, first setscrew nut is through on screw rod by screw rod right-hand member, the adjusting nut installing key is coordinated again and be screwed into screw rod, last setscrew nut is screwed into piston rod I tapped hole also with it against fastening by left end, also worm screw is housed in tapped hole transmission case body, and can transmission be formed with worm gear, rotary shaft lip seal and axle sleeve I are housed successively in transmission case left end step hole, transmission case right side against cylinder precursor left side and have screw connect fastening, stretch out transmission case two ends worm screw and be separately installed with actuating motor and encoder, when actuating motor provides stroke adjustment amount by the automatically controlled program of encoder, worm screw rotates respective angles, worm drive is to worm gear, worm gear also rotates respective angles by reduction speed ratio, the screw rod be fastened on worm gear rotates identical angle equally, the adjusting nut coordinated with screw rod right-hand member trapezoidal thread will have an intended target position, synchronously move right at two-piston, when setscrew nut right side is against adjusting nut left side, two-piston stops moving right, that is present stroke has had the change of stroke adjustment amount, due to range-adjustable integrated series cylinder two-piston right lateral corresponding be two double-acting hydraulic cylinder cylinder processes, so can by the stroke adjustment amount of the stroke adjustment hydraulic control plate bending machine of the integrated cylinder of range-adjustable, encoder coordinates for detecting range-adjustable integrated series cylinder stroke adjustment and limiting stroke adjustment two limit positions with actuating motor, simultaneously, unthreaded hole is processed with and diameter is greater than measuring staff external diameter at piston rod II right-hand member, in locking nut right side, location magnet ring is installed, step tapped hole is processed with at cylinder cap right-hand member, magnetostrictive displacement sensor upper stud is tightened in tapped hole, the measuring staff of magnetostrictive displacement sensor is through location magnet ring, locking nut center hole, be through in the unthreaded hole of piston rod II right-hand member, as the piston moves, magnetostrictive displacement sensor accurately can detect the position of piston, by coordinating with automatically controlled, the just movement position of energy control piston, comprise two limit positions of piston movement.
The integrated cylinder of range-adjustable also comprises stroke damping device, stroke damping device comprises floating-type cushion cover, the nonreturn valve core of damping spring and band push rod, at secondary piston, the left side of back piston arranges floating-type cushion cover, between floating-type cushion cover and secondary piston, bottom is held out against by damping spring, top arranges the nonreturn valve core of band push rod, between floating-type cushion cover and back piston, bottom is held out against by damping spring, top arranges the nonreturn valve core of band push rod, stroke damping device is work like this: when piston leaves other position of left end one segment distance, the inner elements of check valve of N number of spring and band push rod that floating-type cushion cover right side is installed in secondary piston left side withstands on piston rod I right-hand member step, this floating-type cushion can have certain axis and radial floating under being enclosed within stressing conditions, when piston left lateral is close to front-bank rotor housing right side (i.e. stroke left end), before floating-type cushion cover left end annular tapered sleeve insertion cylinder in body opening, start throttling, more close to stroke left end, throttling is larger, until floating-type cushion cover left side top upper cylinder half precursor right side and compress N number of spring and band push rod inner elements of check valve after, cylinder precursor, floating-type cushion cover, secondary piston three against, buffering terminates, and floating-type cushion cover can float when cushioning, and cushioning effect is better.
The integrated cylinder of range-adjustable is also provided with the unidirectional Fill valve of plug-in type, it is fixedly installed on secondary piston and back piston upper inside, its with band push rod inner elements of check valve cooperating, the unidirectional Fill valve of described plug-in type comprises inner elements of check valve, inner elements of check valve is arranged on the inner elements of check valve offside of band push rod, when secondary piston left lateral, inner elements of check valve backs down and be in opening state all the time in secondary piston left lateral by the right cavity pressure of secondary piston; Further left lateral after secondary piston left lateral contacts to floating buffer cover with cylinder precursor right side, the inner elements of check valve that damping spring is compressed, is with push rod is backed down by front floating buffer cover right side, secondary piston right chamber hydraulic oil passes through the unidirectional Fill valve of plug-in type to secondary piston left chamber repairing, secondary piston right lateral starts, inner elements of check valve is closed, and repairing terminates; Back piston is identical with secondary piston principle.
The integrated cylinder of range-adjustable is respectively equipped with plug-in type direct acting relief valve and pressure transducer at Pc and PD hydraulic fluid port, plug-in type direct acting relief valve is used as safety valve, limit two double-acting hydraulic cylinder rod chamber maximum pressures, avoid because abnormal conditions are to the infringement of hydraulic system and range-adjustable integrated series cylinder; Pressure transducer is used for coordinating, for the control to hydraulic system to two double-acting hydraulic cylinder rod chamber Pressure testing and with automatical control system.
Before debugging, using range-adjustable integrated series cylinder, by two plug screws, fully, totally, up hill and dale exitted (exhaust) in the left chamber of two-piston, and ensure that hydraulic oil air content meets the requirements.
Range-adjustable integrated series cylinder proposed by the invention, synchronization accuracy is high, offset load resistance is strong, and stroke is adjustable, and then directly can control plate bending machine stroke adjustment amount; This range-adjustable integrated series cylinder degree of integrationization is high, simplifies hydraulic system, and control ability is strong, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of range-adjustable integrated series cylinder proposed by the invention;
Fig. 2 is that actuating motor and encoder arrange schematic diagram;
Fig. 3 is A-A sectional view in Fig. 1.
Embodiment
See accompanying drawing, with left side in scheming for front, right side be after, range-adjustable integrated series cylinder, comprise body 23 in secondary piston 31, back piston 42, front-bank rotor housing 22, rear-bank rotor housing 27, piston rod I 18, piston rod II 24, cylinder precursor 10, cylinder, cylinder cap 36 and one group of pull bar 37, in cylinder precursor 10, front-bank rotor housing 22, cylinder, body 23, secondary piston 31, piston rod I 18 form front oil hydraulic cylinder, oil hydraulic cylinder after the composition such as body 23, rear-bank rotor housing 27, cylinder cap 36, back piston 42, piston rod II 24 in cylinder, before and after two oil hydraulic cylinders be cascaded by body in cylinder 23 and piston rod II 24 and one group of pull bar 37 and form series connection cylinder, front-bank rotor housing, rear-bank rotor housing internal diameter are identical, piston rod I 18 is identical with piston rod II 24 external diameter, piston rod I 18 left end external diameter coordinates with front-bank rotor housing 22 hole, and dust-proof by dust ring 13, U-shaped circle 25, slip ring type combined sealing 16 seal, piston rod I 18 right-hand member is provided with Step Shaft and stud, and its Step Shaft external diameter coordinates with secondary piston 31 hole, and is sealed by O type circle, its stud and piston rod II 24 left end tapped hole lock, and are fastened on by secondary piston 31 between piston rod I 18 and piston rod II 24, secondary piston 31 coordinates with front-bank rotor housing 22 hole, and is sealed by slip ring type combined sealing 32, and piston rod II 24 left end coordinates with body in cylinder 23 hole, and is sealed by U-shaped circle 25, piston rod II 24 right-hand member is processed with Step Shaft and stud, and its Step Shaft external diameter coordinates with back piston 42 hole, and encloses 20 sealings by O shape, its stud and locking nut 34 are tightened, and are fastened on by back piston 42 between piston rod II 24 and locking nut 34, back piston 42 coordinates with rear-bank rotor housing 27 hole, and sealed by slip ring type combined sealing 32, cylinder precursor 10, front-bank rotor housing 22, in cylinder between body 23 and cylinder in body 23, rear-bank rotor housing 27, 20 sealings are enclosed by O shape between cylinder cap 36, before, rear two-piston is connected by piston rod I 18 and piston rod II 24 and locking nut 34, on an axis fastening, and be isolated in front-bank rotor housing 22 and rear-bank rotor housing 27, in cylinder, body bottom arranges PB hydraulic fluid port, top arranges T hydraulic fluid port, PA hydraulic fluid port is opened in cylinder cap bottom, PA and PB hydraulic fluid port ft connection, cylinder precursor front has PD hydraulic fluid port, in cylinder, body front has PC hydraulic fluid port, PC, PD two hydraulic fluid port flow-off is connected by oil pipe 17 and connects T hydraulic fluid port, the direct connected tank of T hydraulic fluid port.When hydraulic oil enters secondary piston 31, back piston 42 right-side cavity respectively by PA and PB hydraulic fluid port, forward and backward two-piston is synchronously to left movement; On the left of forward and backward two-piston, chamber hydraulic oil is discharged respectively by PC and PD hydraulic fluid port, and enters hydraulic pressure upper dynamic plate bending machine two double-acting hydraulic cylinder rod chambers (not shown in FIG.) respectively, two double-acting hydraulic cylinder backhauls.Because forward and backward two cylinder diameters are identical, piston rod I 18 is identical with piston rod II 24 external diameter, and forward and backward two-piston 31 is synchronized with the movement in addition, so the hydraulic oil unit time inner volume of being discharged respectively by PC with PD hydraulic fluid port is identical, that is flow is identical; When two double-acting hydraulic cylinder cylinder processes, rod chamber hydraulic oil enters chamber on the left of forward and backward two-piston respectively by PC and PD hydraulic fluid port, forward and backward two-piston synchronously moves right, and forward and backward two-piston right-side cavity hydraulic oil is discharged respectively by PA and PB hydraulic fluid port; Due in forward and backward two cylinder bodies through identical, piston rod I 18 is identical with piston rod II 24 external diameter, in addition forward and backward two-piston is synchronized with the movement and the effect of hydraulic control system back pressure, so the hydraulic oil unit time inner volume entered respectively by PC with PD hydraulic fluid port is identical, that is flow is identical; If through identical in hydraulic pressure upper dynamic plate bending machine two double-acting hydraulic cylinder cylinders, piston rod external diameter is identical, so two double-acting hydraulic cylinders will when cylinder process, cylinder backhaul synchronized movement.When two double-acting hydraulic cylinder unbalance loadings occur in cylinder working stroke, due to piston-rodless on the right side of back piston 42, the in addition effect of hydraulic control system back pressure, range-adjustable integrated series cylinder forces two double-acting hydraulic cylinders to be synchronized with the movement.
Described range-adjustable integrated series cylinder also comprises adjusting device for travel, and it comprises screw rod 7, worm gear 6, worm screw (not shown in FIG.), round nut 5, transmission case body 2, axle sleeve I 4, shaft sleeve II 8, anti-adsorption type thrust washer 1, adjustment pad 9, setscrew nut 12, key 15, adjusting nut 14, rotary shaft lip seal 3 and actuating motor 39 and encoder 40, coordinate in cylinder precursor 10 left end hole and press-fit shaft sleeve II 8, screw rod 7 left end is processed with Step Shaft and screw thread, and there is inner hexagon spanner hole end, adjustment pad 9 is through on screw rod 7 by screw rod 7 left end, screw rod 7 passes cylinder precursor 10 left end shaft sleeve II 8 hole by cylinder precursor 10 sliding fit inside, and then by anti-adsorption type thrust washer 1, worm gear 6 is through screw rod 7 left end successively, round nut 5 is tightened on screw rod 7 left end screw thread, key 15 is had to be connected between worm gear 6 with screw rod 7, and be fastened on screw rod 7 by round nut 5, by adjustment adjustment pad 9, ensure between worm gear 6 and anti-adsorption type thrust washer 1 and adjust gap between pad 9 and screw rod 7 shoulder, make screw rod 7 rotatable and axial float in design tolerance, the unthreaded hole of tapped hole and band key 15 groove is had at piston rod I 18 left end, setscrew nut 12 diameter of bore is greater than screw rod 7 right-hand member trapezoidal thread nominal diameter, first setscrew nut 12 is through on screw rod 7 by screw rod 7 right-hand member, the adjusting nut 14 installing key 15 is coordinated again and be screwed into screw rod 7, last setscrew nut 12 is screwed into piston rod I 18 tapped hole also with it against fastening by left end, worm screw (not shown in FIG.) is also housed in tapped hole transmission case body 2, and can transmission be formed with worm gear 6, rotary shaft lip seal 3 and axle sleeve I 4 are housed successively in transmission case left end step hole, transmission case right side against cylinder precursor 10 left side and have screw connect fastening, stretch out transmission case two ends worm screw and be separately installed with actuating motor 39 and encoder 40, when actuating motor 39 provides stroke adjustment amount by automatically controlled program, worm screw rotates respective angles, worm drive is to worm gear 6, worm gear 6 also rotates respective angles by reduction speed ratio, the screw rod 7 be fastened on worm gear 6 rotates identical angle equally, the adjusting nut 14 coordinated with screw rod 7 right-hand member trapezoidal thread will have an intended target position, synchronously move right at two-piston 31, when setscrew nut 12 right side is against adjusting nut 14 left side, two-piston 31 stops moving right, that is present stroke has had the change of stroke adjustment amount, due to range-adjustable integrated series cylinder two-piston 31,43 right lateral corresponding be two double-acting hydraulic cylinder cylinder processes, so can by the stroke adjustment amount of the stroke adjustment hydraulic control plate bending machine of the integrated cylinder of range-adjustable, encoder 40 coordinates for detecting range-adjustable integrated series cylinder stroke adjustment amount and limiting stroke adjustment two limit positions with actuating motor 39, simultaneously, unthreaded hole is processed with and diameter is greater than measuring staff 28 external diameter at piston rod II 24 right-hand member, location magnet ring 35 is installed in locking nut 34 right side, step tapped hole is processed with at cylinder cap 36 right-hand member, magnetostrictive displacement sensor 38 upper stud is tightened in tapped hole, the measuring staff 28 of magnetostrictive displacement sensor 38 is through location magnet ring 35, locking nut 34 center hole, be through in the unthreaded hole of piston rod II 24 right-hand member, when piston 31 moves, magnetostrictive displacement sensor 38 accurately can detect the position of piston 31, by coordinating with automatically controlled, the just movement position of energy control piston 31, comprise two limit positions that piston 31 moves.
The integrated cylinder of range-adjustable also comprises left lateral journey damping device, stroke damping device comprises floating-type cushion cover 29, the nonreturn valve core 30 of damping spring 19 and band push rod, at secondary piston 31, the left side of back piston 42 arranges floating-type cushion cover 29, between floating-type cushion cover 29 and secondary piston, held out against by circumferentially N number of damping spring, top arranges the nonreturn valve core 30 of band push rod, between floating-type cushion cover 29 and back piston, held out against by circumferentially N number of damping spring, top arranges the nonreturn valve core 30 of band push rod, stroke damping device is work like this: when piston 31 leaves other position of left end one segment distance, the inner elements of check valve 30 that floating-type cushion overlaps the N number of spring and band push rod that 29 right sides are installed in secondary piston 31 left side withstands on piston rod I 18 right-hand member step, this floating-type cushion cover 29 can have certain axis and radial floating under stressing conditions, when piston 31 left lateral is close to front-bank rotor housing 22 right side (i.e. stroke left end), floating-type cushion overlaps 29 left end annular tapered sleeves and inserts in cylinder precursor 10 hole, start throttling, more close to stroke left end, throttling is larger, until floating-type cushion overlap 29 left sides top upper cylinder half precursor 10 right sides and compress N number of spring and band push rod inner elements of check valve 30 after, cylinder precursor 10, floating-type cushion cover 29, secondary piston 31 three against, buffering terminates, and floating-type cushion cover 29 can float when cushioning, and cushioning effect is better.
The integrated cylinder of range-adjustable is also provided with the unidirectional Fill valve 33 of plug-in type, it is fixedly installed on secondary piston 31 and back piston 42 upper inside, its with band push rod inner elements of check valve 30 cooperating, the unidirectional Fill valve 33 of described plug-in type comprises inner elements of check valve 21, inner elements of check valve 21 is arranged on inner elements of check valve 30 offside of band push rod, when secondary piston 31 left lateral, inner elements of check valve 21 backs down and be in opening state all the time in secondary piston 31 left lateral by the right cavity pressure of secondary piston 31; Further left lateral after secondary piston 31 left lateral contacts to floating buffer cover with cylinder precursor 10 right side, damping spring 19 is compressed, be with the inner elements of check valve 30 of push rod to be backed down by front floating buffer cover right side, secondary piston 31 right chamber hydraulic oil passes through the unidirectional Fill valve of plug-in type 33 to secondary piston 31 left chamber repairing, secondary piston 31 right lateral starts, inner elements of check valve 21 is closed, and repairing terminates; Back piston is identical with secondary piston principle.
The integrated cylinder of range-adjustable is respectively equipped with plug-in type direct acting relief valve 26 and pressure transducer 11 at Pc and PD hydraulic fluid port, plug-in type direct acting relief valve 26 is used as safety valve, limit two double-acting hydraulic cylinder rod chamber maximum pressures, avoid because abnormal conditions are to the infringement of hydraulic system and range-adjustable integrated series cylinder; Pressure transducer 11 is for coordinating, for the control to hydraulic system to two double-acting hydraulic cylinder rod chamber Pressure testing and with automatical control system.
Before debugging, using range-adjustable integrated series cylinder, fully, totally, up hill and dale (exhaust) must be exitted by two plug screws, 41 pairs of left chambeies of two-piston, and ensure that hydraulic oil air content meets the requirements, otherwise, will range-adjustable integrated series cylinder be had a strong impact on to the control of hydrolic plate bender two double-acting hydraulic cylinder synchronization accuracies.
Range-adjustable integrated series cylinder proposed by the invention, synchronization accuracy is high, offset load resistance is strong, and stroke is adjustable, and then directly can control plate bending machine stroke adjustment amount; This range-adjustable integrated series cylinder degree of integrationization is high, simplifies hydraulic system, and control ability is strong, safe and reliable.
Claims (7)
1. range-adjustable integrated series cylinder, it comprises body in secondary piston, back piston, front-bank rotor housing, rear-bank rotor housing, piston rod I, piston rod II, cylinder precursor, cylinder, cylinder cap and one group of pull bar, it is characterized in that body in cylinder precursor, front-bank rotor housing, cylinder, secondary piston, piston rod I form front oil hydraulic cylinder, oil hydraulic cylinder after body, rear-bank rotor housing, cylinder cap, back piston, piston rod II composition in cylinder, before and after two oil hydraulic cylinders be cascaded by body in cylinder and piston rod II and one group of pull bar and form series connection cylinder, front-bank rotor housing, rear-bank rotor housing internal diameter are identical, piston rod I is identical with piston rod II external diameter, piston rod I left end external diameter coordinates with front-bank rotor housing hole, and dust-proof by dust ring, U-shaped circle, slip ring type combined sealing seal, piston rod I right-hand member is provided with Step Shaft and stud, and its Step Shaft external diameter coordinates with secondary piston hole, and is sealed by O type circle, its stud and piston rod II left end tapped hole lock, and are fastened on by secondary piston between piston rod I and piston rod II, secondary piston coordinates with front-bank rotor housing hole, and is sealed by slip ring type combined sealing, and piston rod II left end coordinates with body opening in cylinder, and is sealed by U-shaped circle, piston rod II right-hand member is processed with Step Shaft and stud, and its Step Shaft external diameter coordinates with back piston hole, and by seal with O ring, its stud and locking nut screwing, be fastened on back piston between piston rod II and locking nut, back piston coordinates with rear-bank rotor housing hole, and sealed by slip ring type combined sealing, cylinder precursor, front-bank rotor housing, in cylinder between body and cylinder in body, rear-bank rotor housing, by seal with O ring between cylinder cap, before, rear two-piston is connected by piston rod I and piston rod II and locking nut, on an axis fastening, and be isolated in front-bank rotor housing and rear-bank rotor housing, in cylinder, body bottom arranges PB hydraulic fluid port, top arranges T hydraulic fluid port, rear-bank rotor housing opens PA hydraulic fluid port, PA and PB hydraulic fluid port ft connection, piston rod I has PD hydraulic fluid port, piston rod II has PC hydraulic fluid port, PC, PD two hydraulic fluid port flow-off is connected by oil pipe and connects T hydraulic fluid port, the direct connected tank of T hydraulic fluid port.
2. range-adjustable integrated series cylinder according to claim 1, it is characterized in that it also comprises adjusting device for travel, adjusting device for travel comprises screw rod, worm gear, worm screw, round nut, transmission case body, axle sleeve I, shaft sleeve II, anti-adsorption type thrust washer, adjustment pad, setscrew nut, key, adjusting nut and rotary shaft lip seal, coordinate in cylinder precursor left end hole and press-fit shaft sleeve II, screw rod left end is processed with Step Shaft and screw thread, and there is inner hexagon spanner hole end, adjustment pad is through on screw rod by screw rod left end, screw rod passes cylinder precursor left end shaft sleeve II hole by cylinder precursor sliding fit inside, anti-adsorption type thrust washer, worm gear is through screw rod left end successively, round nut is tightened on screw rod left end screw thread, be connected by key between worm gear with screw rod, and be fastened on screw rod by round nut, the unthreaded hole of tapped hole and band keyway is had at piston rod I left end, setscrew nut diameter of bore is greater than screw rod right-hand member trapezoidal thread nominal diameter, setscrew nut is through to coordinate on screw rod, with the adjusting nut installing key by screw rod right-hand member and is screwed into screw rod, and setscrew nut is screwed into piston rod I tapped hole by left end and with it against fastening, also worm screw is housed in tapped hole transmission case body, and can transmission be formed with worm gear, rotary shaft lip seal and axle sleeve I are housed successively in transmission case left end step hole, transmission case right side against cylinder precursor left side and have screw connect fastening.
3. range-adjustable integrated series cylinder according to claim 2, it is characterized in that stretching out transmission case two ends worm screw is separately installed with actuating motor and encoder, encoder coordinates with actuating motor for detecting range-adjustable integrated series cylinder stroke adjustment and limiting stroke adjustment two limit positions.
4. range-adjustable integrated series cylinder according to claim 2, it is characterized in that it also comprises magnetostrictive displacement sensor, unthreaded hole is processed with and diameter is greater than measuring staff external diameter at piston rod II right-hand member, in locking nut right side, location magnet ring is installed, step tapped hole is processed with at cylinder cap right-hand member, magnetostrictive displacement sensor upper stud is tightened in tapped hole, and the measuring staff of magnetostrictive displacement sensor, through location magnet ring, locking nut center hole, is through in the unthreaded hole of piston rod II right-hand member.
5. range-adjustable integrated series cylinder according to claim 1, it is characterized in that it also comprises stroke damping device, stroke damping device comprises the nonreturn valve core of floating-type cushion cover, damping spring and band push rod, in the left side of secondary piston, back piston, floating-type cushion cover is set, between floating-type cushion cover and secondary piston, bottom is held out against by damping spring, top arranges the nonreturn valve core of band push rod, between floating-type cushion cover and back piston, bottom is held out against by damping spring, and top arranges the nonreturn valve core of band push rod.
6. range-adjustable integrated series cylinder according to claim 1, it is characterized in that it is also provided with the unidirectional Fill valve of plug-in type, it is fixedly installed on secondary piston and back piston upper inside, its with band push rod inner elements of check valve cooperating, the unidirectional Fill valve of described plug-in type comprises inner elements of check valve, and inner elements of check valve is arranged on the inner elements of check valve offside of band push rod.
7. range-adjustable integrated series cylinder according to claim 1, it is characterized in that being respectively equipped with plug-in type direct acting relief valve and pressure transducer at Pc and PD hydraulic fluid port, plug-in type direct acting relief valve is used as safety valve, limit two double-acting hydraulic cylinder rod chamber maximum pressures, pressure transducer is used for coordinating, for the control to hydraulic system to two double-acting hydraulic cylinder rod chamber Pressure testing and with automatical control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410035297.5A CN103758816B (en) | 2014-01-26 | 2014-01-26 | Range-adjustable integrated series cylinder |
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| CN201410035297.5A CN103758816B (en) | 2014-01-26 | 2014-01-26 | Range-adjustable integrated series cylinder |
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| CN103758816B true CN103758816B (en) | 2015-12-16 |
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| CN108730263B (en) * | 2018-07-16 | 2023-07-11 | 江苏省特种设备安全监督检验研究院 | Tension stroke compensation device |
| CN110040642B (en) * | 2019-03-29 | 2020-11-20 | 宝鸡石油机械有限责任公司 | Semi-active heave compensation winch |
| CN109973464B (en) * | 2019-04-22 | 2024-03-19 | 武汉华液传动制造有限公司 | Hydraulic and manual double-driving cylinder, use method and self-locking method |
| CN112455226B (en) * | 2020-11-27 | 2022-07-22 | 三一汽车起重机械有限公司 | Power take-off structure and system, transfer case, crane and fault detection method |
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| CN103758816A (en) | 2014-04-30 |
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