CN104776085A - Buffered powerful machine self-locking hydraulic cylinder - Google Patents
Buffered powerful machine self-locking hydraulic cylinder Download PDFInfo
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- CN104776085A CN104776085A CN201510154035.5A CN201510154035A CN104776085A CN 104776085 A CN104776085 A CN 104776085A CN 201510154035 A CN201510154035 A CN 201510154035A CN 104776085 A CN104776085 A CN 104776085A
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- China
- Prior art keywords
- steel ball
- locking
- hydraulic cylinder
- peripheral surface
- cushion collar
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
Abstract
The invention discloses a buffered powerful machine self-locking hydraulic cylinder, and belongs to the technical field of hydraulic cylinder structures. When the hydraulic cylinder is at an unlocking state, pressure is applied to a rodless cavity; when a piston rod moves to the end of stroke, a supporting block enters a steel ball frame, the self-locking of the hydraulic cylinder is realized by utilizing the cooperation of a compression spring, a steel ball, a locking block and the steel ball frame, and the pressure is applied to the rodless cavity to realize the unlocking of the hydraulic cylinder; a cushion cover is mounted on a cushion nut in a sleeving mode, and an annular oil gap formed between the cushion cover and the inner diameter of a cylinder cover is smaller than that formed between the cushion cover and the locking nut, so that return buffering is realized. The hydraulic cylinder disclosed by the invention is reliable in locking and simple and convenient in unlocking, a buffer structure can slow down the running speed of the retracted end, and the impact of the retracted end is avoided; when the hydraulic cylinder is started, hydraulic oil can pass through the oil gaps quickly, and the phenomenon that the starting speed is relatively low cannot occur.
Description
Technical field
The present invention relates to a kind of mechanical self-locking hydraulic cylinder, be specifically related to a kind of single pole double-acting hydraulic cylinder, belong to hydraulic cylinder structure technical field.
Background technique
Self-locking hydraulic cylinder is in engineering field demand widely, such as in the mechanical field of numerous launching and recovering equipments such as metallurgy, colliery, hydraulic unit can prevent from when quitting work being subjected to displacement under external force or deadweight (oil hydraulic cylinder stands up) effect to make workpiece, needs hydraulic locking cylinder.
Current oil hydraulic cylinder mainly relies on the mode of shutoff pressure oil to carry out locked hydraulic cylinder, easily reveals, and occurs " underbalance effect " and " soft leg phenomenon ", much improves product, fundamentally do not solve the problem although have.Hydraulic lock is when remaining on certain position for a long time, and due to problems such as pressure oil leakages, precision does not often reach requirement, and when there is oil path failure, precision and reliability just more cannot ensure; Hydraulic lock often all needs the multiple auxiliary element such as one-way valve, selector valve to coordinate to realize locking loop, and the use of these elements makes whole device take up room greatly, and meanwhile, oil circuit increases and easily leaks, and causes maintenance and use inconvenient.
Summary of the invention
The invention provides a kind of powerful mechanical self-locking hydraulic cylinder with buffering, except meeting to-and-fro motion function, also have and stretching out end of travel mechanical self-latching and unlocking function, and realize buffering at retraction end of travel.
With a powerful mechanical self-locking hydraulic cylinder for buffering, comprise cylinder cap, locking nut, cushion collar, right baffle-plate, belleville spring, piston, cylinder barrel, spring, locking block, right baffle plate, support block, steel ball rack, steel ball, Steel Cable Baffle Ring, guide sleeve, dirt-scrapping ring, piston rod and support ring;
The outer peripheral surface of described piston rod is divided into three grades by diameter, the largest diameter of the first order, and secondly, the third level is minimum in the second level;
The end face of described cushion collar one end is processed with radial indentation, is conical surface transition between the periphery of the other end and end face; The external diameter of cushion collar is less than the internal diameter of cylinder cap, the internal diameter of cushion collar is greater than the external diameter of locking nut, gap between cushion collar and cylinder cap internal diameter is less than the gap between cushion collar and locking nut, and the annular formed between cushion collar and cylinder cap internal diameter is crossed oil-gap and is less than the annular formed between cushion collar and locking nut and crosses oil-gap;
Described cylinder barrel is processed with rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port;
The support circumferential surface of described steel ball rack is circumferentially processed with steel ball mounting hole, and the bottom supporting circumferential surface is radial boss;
Described locking block is the Cylindrical housing structure of both ends open, and outer peripheral surface is set with support ring, and the inner peripheral surface of locking block one end extends radial boss, and this radial boss is processed with axial through hole;
Its integrated connection closes: described cylinder cap and guide sleeve are fixedly mounted on the two ends of cylinder barrel respectively, described steel ball rack is fixed in the cylinder barrel of guide sleeve one end by the boss of its bottom, forms toroidal cavity between the support circumferential surface of steel ball rack and the inner peripheral surface of cylinder barrel; The first order outer peripheral surface of described piston rod coordinates with the inner peripheral surface of guide sleeve through after the inner peripheral surface of steel ball rack, and steel ball is placed in the steel ball hole of steel ball rack, and described Steel Cable Baffle Ring is arranged on outside steel ball hole, prevents steel ball from deviating from steel ball hole;
Described support block is sleeved on the second level outer peripheral surface of piston rod, the outer peripheral surface of piston carries out axial limiting by the right baffle plate be fixed on piston end surface to spring and locking block after pocketed springs and locking block successively, said modules integral assembling is on the third level outer peripheral surface of piston rod, and end face and the support block end face of right baffle plate are conflicted; The cavity that described piston left end and piston rod third level circumferential surface are formed is built with butterfly spring and right baffle-plate, described right baffle-plate and butterfly spring are compressed in this cavity by locking nut, described cushion collar is sleeved on the outer peripheral surface of locking nut, and the axial displacement that described cushion collar has on locking nut is undertaken spacing by the step on locking nut and right baffle-plate; When cushion collar left end enters the entry end of described cylinder cap, the outer surface of locking nut and the internal surface of cylinder cap surround formation buffer cavity.
Further, described rod chamber hydraulic fluid port is two, and the axial spacing between rod chamber hydraulic fluid port is greater than the axial length of support ring on locking block; Such scheme can make piston rod move integrally in process, and support ring can not play closed effect to rod chamber hydraulic fluid port.
Further; also comprise dirt-scrapping ring; described dirt-scrapping ring is fixedly mounted on the end of guide sleeve; the inner peripheral surface of described dirt-scrapping ring and the periphery of piston rod are fitted; dirt-scrapping ring can scrape off the solid dirt being attached to piston rod surface in the process of piston rod retraction; the Sealing of protection guide sleeve inside, extends the working life of Sealing.
Further, described guide sleeve is provided with radial bleed outlet, described guide sleeve is provided with the U-shaped seal ring of twice, the U-shaped seal ring of described twice is positioned at the both sides of bleed outlet along the axis of guide sleeve; Can the hydraulic pressure of the withstand large degree of depth when such scheme can guarantee that oil hydraulic cylinder works under water, if after hydraulic pressure breaks through the U-shaped seal ring of first, seep water and to be discharged by bleed outlet, the U-shaped seal ring of second continues the effect playing sealing.
Further, one end that described piston installs butterfly spring and right baffle-plate is processed with two-stage continuous print step hole from end face, and two-stage step hole is followed successively by right baffle-plate mounting hole and butterfly spring mounting hole; The degree of depth of the right baffle-plate mounting hole on described piston and the difference of right baffle-plate thickness are less than the limited compression amount of butterfly spring; Can ensure that butterfly spring in the course of the work can not be damaged thus, and then extend the working life of butterfly spring.
Further, also comprise a copper sheathing, described locking block is sleeved on the outer peripheral surface of piston by copper sheathing; Be convenient to locking block to be arranged on piston, and optimize the process industrial art performance of locking block.
Beneficial effect
1, the present invention is when oil hydraulic cylinder stretches out entirely, and can lean on steel ball auto lock, even if the complete pressure release of oil hydraulic cylinder, steel ball also can firmly be locked; When needing to unlock retraction, pass into pressure oil to rod chamber and reach unlocking pressure, oil hydraulic cylinder can unlock, and has and locks reliable and unlock easy feature.
2, oil hydraulic cylinder retraction end of the present invention is provided with pooling feature, can slow down the motion speed of retraction end, avoid the impact of retraction end; When oil hydraulic cylinder starts, hydraulic oil passes through by quick oil-gap of crossing, and can not produce the phenomenon that toggle speed is slower.
3, rod chamber hydraulic fluid port of the present invention has opened twice hydraulic fluid port arranged side by side on cylinder barrel, its object is to block hydraulic fluid port when avoiding wear ring on locking block to cross hydraulic fluid port and produce system pressure raise problem.
4, the present invention is provided with bleed outlet on guide sleeve; for oil hydraulic cylinder Environmental Conditions be under water time; can the water brought into by piston rod be kept off in the twice U-shaped seal ring of bleed outlet place setting; emitted by bleed outlet; it is stoped to enter oil hydraulic cylinder inside; guide sleeve end is provided with dirt-scrapping ring, is mainly used in scraping off hard object on piston rod, also can protect the dust ring in it.
5, steel ball rack of the present invention is compacted is arranged between cylinder barrel and guide sleeve, and steel ball circumference uniform distribution is arranged in the hole in steel ball rack, is jointly limited it and can not be departed from steel ball rack by Steel Cable Baffle Ring, cylinder barrel inner headed face, piston rod periphery in movement process.
6, support block of the present invention is installed on the piston rod, it is compressed by right baffle plate, when pressure oil promotes right baffle plate, support block can radial and axial motion on the piston rod, it rotates in unblock and locking process can keep its circumferencial direction uniform force, wearing and tearing are comparatively average, effectively extend the working life of oil hydraulic cylinder.
7, the present invention can arrange certain back pressure at rodless cavity end in use, and during unblock, rodless cavity end back pressure can produce thrust to piston rod, and this thrust can balance load partly or completely.After load is balanced, steel ball, steel ball rack, support block, the extruding force of locking block and abrasion condition, the thus working life of growing liquid cylinder pressure can be alleviated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the powerful mechanical self-locking hydraulic cylinder original state of band of the present invention buffering;
Fig. 2 is that the powerful mechanical self-locking hydraulic cylinder of band of the present invention buffering is about to enter the structural representation of lock state;
Fig. 3 is the structural representation of the powerful mechanical self-locking hydraulic cylinder locking state of band of the present invention buffering;
Fig. 4 is the structural representation of steel ball rack in the powerful mechanical self-locking hydraulic cylinder of band of the present invention buffering.
Wherein: 1-cylinder cap, 2-rodless cavity hydraulic fluid port, 3-locking nut, 4-cushion collar, 5-right baffle-plate, 6-belleville spring, 7-piston, 8-cylinder barrel, 9-spring, 10-locking block, 11-copper sheathing, the right baffle plate of 12-, 13-support block, 14-rod chamber hydraulic fluid port, 15-steel ball rack, 16-steel ball, 17-Steel Cable Baffle Ring, 18-guide sleeve, 19-bleed outlet, 20-dirt-scrapping ring, 21-piston rod, 22-support ring.
Embodiment
As shown in Figure 1, the powerful mechanical self-locking hydraulic cylinder of band buffering of the present invention, comprises cylinder cap 1, locking nut 3, cushion collar 4, right baffle-plate 5, belleville spring 6, piston 7, cylinder barrel 8, spring 9, locking block 10, copper sheathing 11, right baffle plate 12, support block 13, steel ball rack 15, steel ball 16, Steel Cable Baffle Ring 17, guide sleeve 18, dirt-scrapping ring 20, piston rod 21 and support ring 22;
The outer peripheral surface of described piston rod 21 is divided into three grades by diameter, the largest diameter of the first order, and secondly, the third level is minimum in the second level;
The outer peripheral surface of described support block 13 has a small stair face by chamfered transition;
Described cylinder barrel 8 is processed with rodless cavity hydraulic fluid port 2 and rod chamber hydraulic fluid port 14; Described rod chamber hydraulic fluid port 14 is two, and the axial spacing between rod chamber hydraulic fluid port 14 is greater than the axial length of support ring 22 on locking block 10; Such scheme can make piston rod 21 move integrally in process, and support ring 22 can not play closed effect to rod chamber hydraulic fluid port 14;
One end that described piston 7 installs butterfly spring 6 and right baffle-plate 5 is processed with two-stage continuous print step hole from end face, and two-stage step hole is followed successively by right baffle-plate 5 mounting hole and butterfly spring 6 mounting hole; The degree of depth of right baffle-plate 5 mounting hole on described piston 7 and the difference of right baffle-plate 5 thickness are less than the limited compression amount of butterfly spring 6, can ensure that butterfly spring 6 in the course of the work can not be damaged thus, and then extend the working life of butterfly spring 6;
As shown in Figure 4, the support circumferential surface of described steel ball rack 15 is circumferentially processed with steel ball mounting hole, the bottom supporting circumferential surface is radial boss;
Described locking block 10 is the Cylindrical housing structure of both ends open, outer peripheral surface is set with support ring 22, and the inner peripheral surface of locking block 10 one end extends radial boss, and this radial boss is processed with axial through hole;
Described guide sleeve 18 is provided with radial bleed outlet 19, described guide sleeve 21 is provided with the U-shaped seal ring of twice, the U-shaped seal ring of described twice is positioned at the both sides of bleed outlet 19 along the axis of guide sleeve 21; Can the hydraulic pressure of the withstand large degree of depth when such scheme can guarantee that oil hydraulic cylinder works under water, if after hydraulic pressure breaks through the U-shaped seal ring of first, seep water and to be discharged by bleed outlet 19, the U-shaped seal ring of second continues the effect playing sealing.
The end face of described cushion collar 4 one end is processed with radial indentation, is conical surface transition between the periphery of the other end and end face; The external diameter of cushion collar 4 is less than the internal diameter of cylinder cap 1,4 internal diameters of cushion collar are greater than the external diameter of locking nut 3, gap between cushion collar 4 and cylinder cap 1 internal diameter is less than the gap between cushion collar 4 and locking nut 3, and the annular formed between cushion collar 4 and cylinder cap 1 internal diameter is crossed oil-gap and is less than the annular formed between cushion collar 4 and locking nut 3 and crosses oil-gap;
Its integrated connection closes: described cylinder cap 1 and guide sleeve 18 are fixedly mounted on the two ends of cylinder barrel respectively, and dirt-scrapping ring 20 is fixedly mounted on the end of guide sleeve 18, and the inner peripheral surface of described dirt-scrapping ring 20 and the periphery of piston rod 21 are fitted; Described steel ball rack 15 is fixed in the cylinder barrel 8 of guide sleeve 18 one end by the boss of its bottom, forms toroidal cavity between the support circumferential surface of steel ball rack 15 and the inner peripheral surface of cylinder barrel 8; The first order outer peripheral surface of described piston rod 21 coordinates with the inner peripheral surface of guide sleeve 18 through after the inner peripheral surface of steel ball rack 15, and steel ball 16 is placed in the steel ball hole of steel ball rack 15, and described Steel Cable Baffle Ring 17 is arranged on outside steel ball hole, prevents steel ball 16 from deviating from steel ball hole;
Described support block 13 is sleeved on the second level outer peripheral surface of piston rod 21, the outer peripheral surface of piston 7 carries out axial limiting by the right baffle plate be fixed on piston end surface 12 pairs of springs 9 and locking block 10 after pocketed springs 9 and locking block 10 successively, described locking block 10 is sleeved on by copper sheathing 11 on the outer peripheral surface of piston 7, said modules integral assembling is on the third level outer peripheral surface of piston rod 21, and end face and support block 13 end face of right baffle plate 12 are conflicted; The step hole of described piston 7 left end is successively built with butterfly spring 6 and right baffle-plate 5, described right baffle-plate 5 and butterfly spring 6 are compressed in step hole by locking nut 3, described cushion collar 4 is sleeved on the outer peripheral surface of locking nut 3, and the axial displacement that described cushion collar 4 has on locking nut 3 is undertaken spacing by the step on locking nut 3 and right baffle-plate 5; When cushion collar 4 left end enters the entry end of described cylinder cap 1, the outer surface of locking nut 3 and the internal surface of cylinder cap 1 surround formation buffer cavity.
Working principle:
When oil hydraulic cylinder is in retracted mode, as shown in Figure 1, oil hydraulic cylinder is original state, now to rodless cavity pressurization, fluid pressure promotion piston rod 21, locking nut 3, piston 7 (power of piston end surface is passed on piston rod 21 through right baffle plate 12 to support block 13) move to rod chamber direction.When piston rod 21 extend out to end of travel, support block 13 enters in steel ball rack 15, and steel ball 16 withstands on the inclined-plane place of the endoporus entrance of support block 13 maximum outside diameter place and locking block 10.As shown in Figure 2, continue in the moving process of rod chamber direction at piston rod 21, locking block 10 is withstood by steel ball 15 and cannot move (cannot produce displacement relative to cylinder cap 1), and the relative cylinder cap 1 of piston 7 continues to move to right and extrusion spring 9, when piston rod 21 drives support block 13 to continue to move to immediately below steel ball 16, steel ball 16 is pressed into the inclined-plane of support block 13 under the pressure on the inclined-plane of the endoporus entrance of locking block 10, and finally moves on the small stair face of support block 13; After piston rod 21 moves into place, locking block 10 resets under spring thrust (relative cylinder cap moves to right baffle plate 12 and is adjacent to support block 13 end face) and cover steel ball rack 15 periphery, restriction steel ball departs from the periphery of steel ball rack 15, support block 13 inclined-plane also limits the small stair face that steel ball departs from 13 support blocks simultaneously, and oil hydraulic cylinder completes auto-lock process.Even if two chamber pressure releases, oil hydraulic cylinder also can well mechanical caging, as shown in Figure 3.
Oil hydraulic cylinder releasing process: when oil hydraulic cylinder is in the lock state, pressurize to rod chamber, fluid pressure promotes piston 7 and in the moving process of rodless cavity direction, compresses belleville spring 6 and drive locking block 10 synchronizing moving, piston 7 left side and right baffle-plate 5 are adjacent to, restriction belleville spring decrement, (fluid pressure is passed to locking nut 3 through piston 7 to right baffle-plate 5, is passed to piston rod 21 through locking nut 3, and namely oil pressure produces to rodless cavity directional pressure F piston rod 21).When rod chamber fluid pressure reaches unlocking pressure, locking block 10 end inclined-plane moves to above steel ball 16, at support block sloped roof lift, (this power is that F extrudes support block to steel ball 16, support block inclined-plane is to the component of the power perpendicular to inclined-plane that steel ball produces) under depart from small stair planar movement to the inclined-plane of support block 13 and finally depart from the restriction of locking block completely, oil hydraulic cylinder has unlocked.
Oil hydraulic cylinder rodless cavity end is provided with the buffering of cushion collar for oil hydraulic cylinder retraction end of travel.Its cushioning principle is: when oil hydraulic cylinder is retracted to end, cushion collar 4 progresses in the buffer cavity of cylinder cap 1, the left side of cushion collar 4 and the step surface of locking nut fit by between cushion collar 4 and locking nut 3 cross oil-gap close, fluid in buffer cavity through the radial indentation of cushion collar 4 right-hand member by crossing oil-gap and pass through between cushion collar 4 and cylinder cap 1, can only be crossed oil-gap due to the annular formed between cushion collar 4 and cylinder cap 1 internal diameter and is less than the annular formed between cushion collar 4 and locking nut 3 and crosses oil-gap; Therefore fluid is slow transitted through by the gap (less) between cushion collar 4 and cylinder cap 1 endoporus, thus plays the effect slowing down rate of descent; In contrast, when oil hydraulic cylinder stretches out motion, fluid is entered by rodless cavity hydraulic fluid port 2, and fluid promotes cushion collar 4 upper-end surface and is adjacent to right baffle-plate 5, fluid can by cushion collar 4 and locking nut 3 cross oil-gap quickly through, oil cylinder can start faster.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the powerful mechanical self-locking hydraulic cylinder of band buffering, it is characterized in that, comprise cylinder cap (1), locking nut (3), cushion collar (4), right baffle-plate (5), butterfly spring (6), piston (7), cylinder barrel (8), spring (9), locking block (10), right baffle plate (12), support block (13), steel ball rack (15), steel ball (16), Steel Cable Baffle Ring (17), guide sleeve (18), piston rod (21) and support ring (22);
The outer peripheral surface of described piston rod (21) is divided into three grades by diameter, the largest diameter of the first order, and secondly, the third level is minimum in the second level;
The end face of described cushion collar (4) one end is processed with radial indentation, is conical surface transition between the periphery of the other end and end face; The external diameter of cushion collar (4) is less than the internal diameter of cylinder cap (1), the internal diameter of cushion collar (4) is greater than the external diameter of locking nut (3), gap between cushion collar (4) and cylinder cap (1) internal diameter is less than the gap between cushion collar (4) and locking nut (3), and the annular formed between cushion collar (4) and cylinder cap (1) internal diameter is crossed oil-gap and is less than the annular formed between cushion collar (4) and locking nut (3) and crosses oil-gap;
Described cylinder barrel (8) is processed with rodless cavity hydraulic fluid port (2) and rod chamber hydraulic fluid port (14);
The support circumferential surface of described steel ball rack (15) is circumferentially processed with steel ball mounting hole, and the bottom supporting circumferential surface is radial boss;
The Cylindrical housing structure that described locking block (10) is both ends open, outer peripheral surface is set with support ring (22), the inner peripheral surface of locking block (10) one end extends radial boss, this radial boss is processed with axial through hole;
Its integrated connection closes: described cylinder cap (1) and guide sleeve (18) are fixedly mounted on the two ends of cylinder barrel (8) respectively, described steel ball rack (15) is fixed in the cylinder barrel (8) of guide sleeve (18) one end by the boss of its bottom, forms toroidal cavity between the support circumferential surface of steel ball rack (15) and the inner peripheral surface of cylinder barrel (8); The first order outer peripheral surface of described piston rod (21) coordinates with the inner peripheral surface of guide sleeve (18) through after the inner peripheral surface of steel ball rack (15), steel ball (16) is placed in the steel ball hole of steel ball rack (15), described Steel Cable Baffle Ring (17) is arranged on outside steel ball hole, prevents steel ball (16) from deviating from steel ball hole;
Described support block (13) is sleeved on the second level outer peripheral surface of piston rod (21), the outer peripheral surface of piston (7) carries out axial limiting by the right baffle plate (12) be fixed on piston end surface to spring (9) and locking block (10) after pocketed springs (9) and locking block (10) successively, said modules integral assembling is on the third level outer peripheral surface of piston rod (21), and end face and support block (13) end face of right baffle plate (12) are conflicted; The cavity that described piston (7) left end and piston rod (21) third level circumferential surface are formed is built with butterfly spring (6) and right baffle-plate (5), described right baffle-plate (5) and butterfly spring (6) are compressed in this cavity by locking nut (3), described cushion collar (4) is sleeved on the outer peripheral surface of locking nut (3), and the axial displacement that described cushion collar (4) has on locking nut (3) is undertaken spacing by the step on locking nut (3) and right baffle-plate (5); When cushion collar (4) left end enters the entry end of described cylinder cap (1), the outer surface of locking nut (3) and the internal surface of cylinder cap (1) surround formation buffer cavity.
2. the powerful mechanical self-locking hydraulic cylinder of band buffering according to claim 1, it is characterized in that: described rod chamber hydraulic fluid port (14) is two, the axial spacing between rod chamber hydraulic fluid port (14) is greater than the axial length of the upper support ring (22) of locking block (10).
3. the powerful mechanical self-locking hydraulic cylinder of band buffering according to claim 1 and 2, it is characterized in that: also comprise dirt-scrapping ring (20), described dirt-scrapping ring (20) is fixedly mounted on the end of guide sleeve (18), and the inner peripheral surface of described dirt-scrapping ring (20) and the periphery of piston rod (21) are fitted.
4. the powerful mechanical self-locking hydraulic cylinder of band buffering according to claim 1 and 2, it is characterized in that: described guide sleeve (18) is provided with radial bleed outlet (19), described guide sleeve (18) is provided with the U-shaped seal ring of twice, the U-shaped seal ring of described twice is positioned at the both sides of bleed outlet (19) along the axis of guide sleeve (21).
5. the powerful mechanical self-locking hydraulic cylinder of band buffering according to claim 1 and 2, it is characterized in that: one end that described piston (7) installs butterfly spring (6) and right baffle-plate (5) is processed with two-stage continuous print step hole from end face, and two-stage step hole is followed successively by right baffle-plate (5) mounting hole and butterfly spring (6) mounting hole; The degree of depth of right baffle-plate (5) mounting hole on described piston (7) and the difference of right baffle-plate (5) thickness are less than the limited compression amount of butterfly spring (6).
6. the powerful mechanical self-locking hydraulic cylinder of band buffering according to claim 1 and 2, it is characterized in that: also comprise a copper sheathing (11), described locking block (10) is sleeved on the outer peripheral surface of piston (7) by copper sheathing (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154035.5A CN104776085B (en) | 2015-04-02 | 2015-04-02 | The strength mechanical self-locking hydraulic cylinder of band buffering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154035.5A CN104776085B (en) | 2015-04-02 | 2015-04-02 | The strength mechanical self-locking hydraulic cylinder of band buffering |
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| CN104776085A true CN104776085A (en) | 2015-07-15 |
| CN104776085B CN104776085B (en) | 2016-10-26 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240341A (en) * | 2015-11-20 | 2016-01-13 | 常州海宏液压设备有限公司 | Hydraulic oil cylinder of thrust floating buffer industrial furnace |
| CN106499691A (en) * | 2015-09-08 | 2017-03-15 | 卢西亚诺特林达德·德·索萨蒙泰罗 | For actuating the locking system of cylinder and actuating cylinder |
| CN106564614A (en) * | 2016-11-01 | 2017-04-19 | 广州飞机维修工程有限公司 | Aileron state locking method of aerobus A320 series type and aileron actuator cylinder lock |
| CN107806458A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of mechanical self-latching tightly locking hydraulic cylinder |
| CN108006007A (en) * | 2017-12-14 | 2018-05-08 | 中船重工中南装备有限责任公司 | Mechanical interlocking two-stage hydraulic cylinder |
| CN108368865A (en) * | 2015-11-17 | 2018-08-03 | 李容俊 | It can carry out the fluid pressure drive device for being applicable in mechanicalness locking device of limit adjustment |
| CN109436286A (en) * | 2018-12-04 | 2019-03-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of variation rigidity elastic force release acting device for ram-air turbine |
| CN109595220A (en) * | 2018-12-21 | 2019-04-09 | 中船重工中南装备有限责任公司 | A kind of Slow Close hydraulic cylinder |
| CN109630501A (en) * | 2019-01-02 | 2019-04-16 | 中船重工中南装备有限责任公司 | A kind of hydraulic cylinder that two-way mechanical is self-locking |
| CN113606217A (en) * | 2021-08-11 | 2021-11-05 | 奥星制药设备（石家庄）有限公司 | Hydraulic oil cylinder connecting structure capable of being quickly disassembled and assembled |
| CN113638715A (en) * | 2021-07-14 | 2021-11-12 | 哈尔滨工程大学 | ROV gripper column for deep sea |
| CN114542832A (en) * | 2022-03-14 | 2022-05-27 | 上海吉啸电子科技有限公司 | CDS pneumatic valve trachea connection structure |
| CN114589955A (en) * | 2022-03-09 | 2022-06-07 | 浙江索特重工科技有限公司 | Automatic clamping device for mold |
| CN107806458B (en) * | 2016-09-08 | 2024-04-30 | 中国兵器工业集团江山重工研究院有限公司 | Mechanical self-locking anti-loose hydraulic cylinder |
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| DE29801444U1 (en) * | 1998-01-29 | 1999-08-12 | Fischer Reinhard | Locked working cylinder |
| DE102005059138A1 (en) * | 2005-06-08 | 2006-12-14 | Herbert Engelmann | Hydraulic cylinder has locking device brining into engagement with piston and/or piston rod on one side, cover block and/or sleeve block on other side in locking position; control is exerted by hydraulic pressure unit and/or spring force |
| CN2851679Y (en) * | 2005-09-30 | 2006-12-27 | 北京市液压技术研究所 | Hydraulic cylinder with mechanical lock |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499691A (en) * | 2015-09-08 | 2017-03-15 | 卢西亚诺特林达德·德·索萨蒙泰罗 | For actuating the locking system of cylinder and actuating cylinder |
| CN108368865A (en) * | 2015-11-17 | 2018-08-03 | 李容俊 | It can carry out the fluid pressure drive device for being applicable in mechanicalness locking device of limit adjustment |
| CN105240341A (en) * | 2015-11-20 | 2016-01-13 | 常州海宏液压设备有限公司 | Hydraulic oil cylinder of thrust floating buffer industrial furnace |
| CN107806458A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of mechanical self-latching tightly locking hydraulic cylinder |
| CN107806458B (en) * | 2016-09-08 | 2024-04-30 | 中国兵器工业集团江山重工研究院有限公司 | Mechanical self-locking anti-loose hydraulic cylinder |
| CN106564614A (en) * | 2016-11-01 | 2017-04-19 | 广州飞机维修工程有限公司 | Aileron state locking method of aerobus A320 series type and aileron actuator cylinder lock |
| CN108006007A (en) * | 2017-12-14 | 2018-05-08 | 中船重工中南装备有限责任公司 | Mechanical interlocking two-stage hydraulic cylinder |
| CN109436286A (en) * | 2018-12-04 | 2019-03-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of variation rigidity elastic force release acting device for ram-air turbine |
| CN109436286B (en) * | 2018-12-04 | 2021-09-17 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Variable-rigidity elastic release actuating device for ram air turbine |
| CN109595220A (en) * | 2018-12-21 | 2019-04-09 | 中船重工中南装备有限责任公司 | A kind of Slow Close hydraulic cylinder |
| CN109595220B (en) * | 2018-12-21 | 2023-12-05 | 中船重工中南装备有限责任公司 | Slowly-closed hydraulic cylinder |
| CN109630501A (en) * | 2019-01-02 | 2019-04-16 | 中船重工中南装备有限责任公司 | A kind of hydraulic cylinder that two-way mechanical is self-locking |
| CN109630501B (en) * | 2019-01-02 | 2023-12-01 | 中船重工中南装备有限责任公司 | Hydraulic cylinder capable of achieving bidirectional mechanical self-locking |
| CN113638715A (en) * | 2021-07-14 | 2021-11-12 | 哈尔滨工程大学 | ROV gripper column for deep sea |
| CN113606217A (en) * | 2021-08-11 | 2021-11-05 | 奥星制药设备（石家庄）有限公司 | Hydraulic oil cylinder connecting structure capable of being quickly disassembled and assembled |
| CN113606217B (en) * | 2021-08-11 | 2023-10-10 | 奥星制药设备（石家庄）有限公司 | Hydraulic cylinder connecting structure capable of being quickly disassembled and assembled |
| CN114589955B (en) * | 2022-03-09 | 2023-08-29 | 浙江索特重工科技有限公司 | Automatic clamping device for mold |
| CN114589955A (en) * | 2022-03-09 | 2022-06-07 | 浙江索特重工科技有限公司 | Automatic clamping device for mold |
| CN114542832B (en) * | 2022-03-14 | 2023-06-06 | 上海吉啸电子科技有限公司 | CDS pneumatic valve air pipe connection structure |
| CN114542832A (en) * | 2022-03-14 | 2022-05-27 | 上海吉啸电子科技有限公司 | CDS pneumatic valve trachea connection structure |
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