CN112628238A - Hydraulic oil cylinder with high buffering performance and working method thereof - Google Patents
Hydraulic oil cylinder with high buffering performance and working method thereof Download PDFInfo
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- CN112628238A CN112628238A CN202011552079.0A CN202011552079A CN112628238A CN 112628238 A CN112628238 A CN 112628238A CN 202011552079 A CN202011552079 A CN 202011552079A CN 112628238 A CN112628238 A CN 112628238A
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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
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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
- F15B15/1433—End caps
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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
- F15B15/1438—Cylinder to end cap 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
- F15B15/1447—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
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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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
- F15B15/1461—Piston rod sealings
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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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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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
- F15B15/202—Externally-operated valves mounted in or on the actuator
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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
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/227—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having an auxiliary cushioning piston within the main piston or the cylinder end face
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a hydraulic oil cylinder with high buffering performance, which comprises a cylinder barrel, wherein an oil cavity is arranged in the cylinder barrel, a piston rod is arranged in the oil cavity, and an end cover is arranged at one end of the cylinder barrel. According to the invention, the running speed of the piston rod is reduced by changing the injection speed of hydraulic oil through the first regulating valve and the second regulating valve, the buffering effect is achieved from the outside of the oil cylinder, the arc-shaped inserting plate at the end part of the piston is matched with the arc-shaped hole at the bottom of the end cover through the first buffering spring, the buffering plug at the other end of the piston is matched with the buffering cover and the sliding cover and the second buffering spring in the buffering cavity through the buffering plug at the other end of the piston, the extending and retracting speed of the piston rod is buffered, the buffering effect is further achieved from the inside of the oil cylinder, the buffering brake of the high-speed hydraulic oil cylinder is realized through multiple buffering effects, the high-pressure impact resistance is realized, the reliability of a sealing element is not influenced, the.
Description
Technical Field
The invention relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with high buffering performance and a working method thereof.
Background
In hydraulic system, hydraulic cylinder is one of indispensable hydraulic component, and hydraulic cylinder is when doing high-speed motion to stroke end, often can take place violent mechanical collision, not only influences mechanical equipment's working property, can damage hydraulic cylinder and hydraulic system's other components moreover, has very big danger, and influences hydraulic cylinder's life after long-time. In the prior art, a hydraulic oil cylinder has a single buffering mode and a general buffering effect.
Disclosure of Invention
The invention aims to provide a hydraulic oil cylinder with high buffering performance and a working method thereof, and solves the following technical problems: thereby reduce the functioning speed of piston rod through the injection rate that changes hydraulic oil through first governing valve and second governing valve, reach the buffering effect from the hydro-cylinder outside, the arc picture peg of piston tip and the first buffer spring of arc hole cooperation of end cover bottom, the speed when having cushioned the piston rod outwards ejecting, the speed after the piston rod withdraws has been cushioned to the buffering stopper cooperation buffering lid of the piston other end and the sliding closure and the second buffer spring of buffer cavity, and then reach the buffering effect from the hydro-cylinder is inside, the buffering braking of high-speed hydraulic cylinder is realized to multiple buffering effect, high pressure resistant impact, can not influence the reliability of sealing member, high-speed hydraulic cylinder's life has been improved greatly, two-way buffering has received the damage when hydraulic cylinder stretches out and contracts, the single hydro-cylinder buffering mode among the prior art has been solved, the poor technical problem of buffering effect.
The purpose of the invention can be realized by the following technical scheme:
a hydraulic oil cylinder with high buffering performance comprises a cylinder barrel, wherein an oil cavity is arranged in the cylinder barrel, a piston rod is arranged in the oil cavity, an end cover is arranged at one end of the cylinder barrel, a sliding hole is formed in the center of the end cover, the piston rod is slidably arranged in the end cover, arc-shaped holes are symmetrically formed in two sides of the bottom of the end cover, the outer surface of the bottom of the end cover is fixedly connected with the inner wall of the oil cavity, a piston is fixedly sleeved at the end part of the piston rod, two arc-shaped plug boards are arranged on one side, close to the end cover, of the piston and correspond to the two arc-shaped holes one by one, the arc-shaped plug boards are in plug fit with the arc-shaped holes, a first buffering spring is slidably arranged on the piston rod, the end, the buffer cover is provided with a buffer groove close to one side of the piston, a second through hole is formed in the bottom of the buffer groove, the piston is close to a buffer plug fixedly connected with one side of the buffer cover, the buffer plug is in plug-in fit with the buffer groove, the oil cavity is provided with a buffer cavity far away from one side of the piston, a sliding cover is arranged in the buffer cavity in a sliding manner, a plurality of second buffer springs are arranged in the sliding cover, one ends of the second buffer springs are fixedly connected with the inner wall of the buffer cavity, the other ends of the second buffer springs are fixedly connected with the bottom of the sliding cover, and a plurality of oil.
Furthermore, a first oil port is formed in one side, close to the buffer cavity, of the cylinder barrel, a first oil pipe is connected to the first oil port, a first adjusting valve is arranged in the first oil pipe, a second oil port is formed in one side, close to the end cover, of the cylinder barrel, a second oil pipe is connected to the second oil port, and a second adjusting valve is arranged in the second oil pipe.
Further, first buffer spring external diameter is less than the interval between two arc picture pegs, the buffer plug is the round platform structure, be provided with a plurality of first through-holes on the end cover, a plurality of screw holes have been seted up to the cylinder tip, be provided with fixing bolt in the first through-hole, it is a plurality of fixing bolt and a plurality of screw hole one-to-one, the end cover passes through fixing bolt and the screw hole threaded connection on the cylinder.
Further, piston slidable mounting is in the oil cavity, be provided with the sealing washer between oil cavity and the piston, the sealing washer cover is located on the piston, still the cover is equipped with two antifouling rings and two rings of wearing on the piston, antifouling ring sets up in the ring outside of wearing, two wear ring and antifouling ring symmetry set up, the end cover top is provided with dustproof oil blanket, still be provided with piston rod oil blanket and cushion ring between end cover and the piston rod.
A working method of a hydraulic oil cylinder with high buffering performance comprises the following steps:
the method comprises the following steps: hydraulic oil is injected from a first oil pipe, the hydraulic oil enters an oil cavity from a first oil port, the hydraulic oil pushes a piston at the end part of a piston rod to move towards an end cover, when the piston is about to move to the end cover, a first adjusting valve is started, the injection speed of the hydraulic oil is reduced, the running speed of the piston rod is reduced, when the piston contacts a first buffer spring, the running speed of the piston rod is buffered by the first buffer spring, at the moment, an arc-shaped inserting plate at the end part of the piston is inserted into an arc-shaped hole at the bottom of the end cover, the hydraulic oil in the arc-shaped hole flows out from a gap on the arc-shaped hole under the extrusion action, a throttling effect is formed, the speed when the piston rod extends out is further buffered, and rigid impact caused by the;
step two: inject hydraulic oil into from the second oil pipe, hydraulic oil enters into in the oil pocket from the second hydraulic fluid port, hydraulic oil promotes the piston and removes to the cushion chamber direction, when the piston is about to remove to the buffering lid, start the second governing valve, reduce the injection velocity of hydraulic oil, the functioning speed of piston rod has been reduced, in the buffer slot on the buffering lid is inserted to the buffering stopper of piston tip, the functioning speed of piston rod has been cushioned to the buffering stopper, the piston rod tip contacts with the sliding closure, the hydraulic oil in the sliding closure is discharged from the oilhole on the sliding closure, speed when the piston rod retracts has further been cushioned to cooperation second buffer spring under the throttle effect, rigid impact that the speed caused when avoiding the piston to retract is too fast, realize hydraulic cylinder's two-way buffering.
The invention has the beneficial effects that:
the invention relates to a hydraulic oil cylinder with high buffering performance, wherein a first regulating valve and a second regulating valve reduce the injection speed of hydraulic oil and the running speed of a piston rod, when a piston contacts a first buffering spring, the first buffering spring buffers the running speed of the piston rod, an arc-shaped inserting plate at the end part of the piston is inserted into an arc-shaped hole at the bottom of an end cover, the hydraulic oil in the arc-shaped hole flows out from a gap on the arc-shaped hole under the extrusion action to form a throttling effect, the speed of the piston rod when the piston rod extends out is further buffered, when a buffering plug at the end part of the piston is inserted into a buffering groove on the buffering cover, the running speed of the piston rod is buffered by the buffering plug, the end part of the piston rod is contacted with a sliding cover, the hydraulic oil in the sliding cover is discharged from an oil hole on the sliding cover, the speed of the piston rod when the piston rod retracts is further buffered by matching with the second buffering spring under the throttling action, reach buffering effect from the hydro-cylinder outside, the arc picture peg of piston tip and the first buffer spring of arc hole cooperation of end cover bottom, speed when having cushioned the piston rod outwards ejecting, the speed after piston rod withdrawal has been cushioned to the buffering stopper cooperation buffering lid of the piston other end and the sliding closure and the second buffer spring of buffering intracavity, and then reach buffering effect from the hydro-cylinder is inside, high-speed hydraulic cylinder's buffering braking is realized to multiple buffering effect, high pressure resistant impact, can not influence the reliability of sealing member, high-speed hydraulic cylinder's life has been improved greatly, two-way buffering has received the damage when having reduced hydraulic cylinder and stretched out and contract.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a hydraulic cylinder with high buffering capacity according to the present invention;
FIG. 2 is a schematic structural view of the end closure of the present invention;
FIG. 3 is a schematic view of the structure of the buffering cap of the present invention;
fig. 4 is an enlarged view of a in fig. 1.
In the figure: 1. a cylinder barrel; 2. an oil chamber; 3. a piston rod; 4. an end cap; 401. a slide hole; 402. a first through hole; 403. an arc-shaped hole; 404. a dustproof oil seal; 5. a buffer cover; 501. a buffer tank; 502. a second through hole; 6. a piston; 601. a seal ring; 7. a buffer plug; 8. an arc-shaped inserting plate; 9. a first oil pipe; 10. a first regulating valve; 11. a first buffer spring; 12. a second oil pipe; 13. a second regulating valve; 14. a buffer chamber; 1401. a sliding cover; 1402. a second buffer spring; 1403. and an oil hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the invention is a hydraulic cylinder with high buffering performance, comprising a cylinder barrel 1, an oil chamber 2 is arranged in the cylinder barrel 1, a piston rod 3 is arranged in the oil chamber 2, one end of the cylinder barrel 1 is provided with an end cover 4, the center of the end cover 4 is provided with a sliding hole 401, the piston rod 3 is slidably mounted in the end cover 4, two sides of the bottom of the end cover 4 are symmetrically provided with arc holes 403, the outer surface of the bottom of the end cover 4 is fixedly connected with the inner wall of the oil chamber 2, the end part of the piston rod 3 is fixedly sleeved with a piston 6, one side of the piston 6 close to the end cover 4 is provided with two arc inserting plates 8, the two arc inserting plates 8 correspond to the two arc holes 403 one by one, the arc inserting plates 8 are matched with the arc holes 403, a first buffering spring 11 is slidably mounted, the buffer cover 5 is fixedly arranged on the inner wall of the oil cavity 2, one side of the buffer cover 5, which is close to the piston 6, is provided with a buffer groove 501, the bottom of the buffer groove 501 is provided with a second through hole 502, one side of the piston 6, which is close to the buffer cover 5, is fixedly connected with a buffer plug 7, the buffer plug 7 is a rubber part, the buffer plug 7 is in splicing fit with the buffer groove 501, one side of the oil cavity 2, which is far away from the piston 6, is provided with a buffer cavity 14, the buffer cavity 14 is internally provided with a sliding cover 1401, the sliding cover 1401 is internally provided with a plurality of second buffer springs 1402, one end of each second buffer spring 1402 is fixedly connected with the inner wall of the buffer cavity 14, the other end of each second buffer spring 1402 is fixedly connected with the bottom of the sliding cover 1401, the sliding cover 1401 is provided with a plurality of oil holes 1403, the arc inserting plate 8 at the end of the piston 6, the speed of the piston rod 3 during extension and retraction is buffered, the buffering effect is achieved from the inside of the hydraulic oil cylinder, the buffering brake of the high-speed hydraulic oil cylinder is realized through the multiple buffering effects, the high-pressure impact resistance is realized, the reliability of a sealing element is not influenced, and the service life of the high-speed hydraulic oil cylinder is greatly prolonged.
Specifically, a first oil port is formed in one side, close to the buffer cavity 14, of the cylinder barrel 1, a first oil pipe 9 is connected to the first oil port, a first regulating valve 10 is arranged in the first oil pipe 9, a second oil port is formed in one side, close to the end cover 4, of the cylinder barrel 1, a second oil pipe 12 is connected to the second oil port, a second regulating valve 13 is arranged in the second oil pipe 12, the first oil pipe 9 is matched with the first regulating valve 10, the second oil pipe 12 is matched with the second regulating valve 13, the running speed of the piston rod 3 is reduced through changing the injection speed of hydraulic oil, and the buffer effect is achieved from the. First buffer spring 11 external diameter is less than the interval between two arc picture peg 8, buffering stopper 7 is the round platform structure, be provided with a plurality of first through-holes 402 on the end cover 4, a plurality of screw holes have been seted up to 1 tip of cylinder, be provided with fixing bolt in the first through-hole 402, a plurality of fixing bolt and a plurality of screw hole one-to-one, end cover 4 passes through fixing bolt and the screw hole threaded connection on the cylinder 1, detachable end cover 4 conveniently clears up hydraulic cylinder inside, and change sealing washer 601 on the piston, very big convenience has been brought for operating personnel, hydraulic cylinder's life has further been improved. Piston 6 slidable mounting is provided with sealing washer 601 between oil pocket 2 and the piston 6 in oil pocket 2, and on piston 6 was located to sealing washer 601 cover, still the cover was equipped with two antifouling rings and two rings of wearing that wear on piston 6, and antifouling ring sets up in the ring outside of wearing, and two rings of wearing and antifouling ring symmetry set up, and end cover 4 top is provided with dustproof oil blanket 404, still is provided with piston rod oil blanket and cushion ring between end cover 4 and the piston rod 3.
A working method of a hydraulic oil cylinder with high buffering performance comprises the following steps:
the method comprises the following steps: injecting hydraulic oil from a first oil pipe 9, wherein the hydraulic oil enters an oil cavity 2 from a first oil port, the hydraulic oil pushes a piston 6 at the end part of a piston rod 3 to move towards an end cover 4, when the piston 6 is about to move to the end cover 4, a first adjusting valve 10 is started, the injection speed of the hydraulic oil is reduced, the running speed of the piston rod 3 is reduced, when the piston 6 contacts a first buffer spring 11, the running speed of the piston rod 3 is buffered by the first buffer spring 11, at the moment, an arc-shaped inserting plate 8 at the end part of the piston 6 is inserted into an arc-shaped hole 403 at the bottom of the end cover 4, the hydraulic oil in the arc-shaped hole 403 flows out from a gap on the arc-shaped hole 403 under the extrusion action, a throttling effect is formed, the speed when the piston rod 3 extends out is further buffered, and the rigid impact caused by the over;
step two: injecting hydraulic oil from the second oil pipe 12, the hydraulic oil enters the oil cavity 2 from the second oil port, the hydraulic oil pushes the piston 6 to move towards the buffer cavity 14, when the piston 6 is about to move to the buffer cover 5, the second regulating valve 13 is started, the injection speed of the hydraulic oil is reduced, the running speed of the piston rod 3 is reduced, when the buffer plug 7 at the end part of the piston 6 is inserted into the buffer groove 501 on the buffer cover 5, the running speed of the piston rod 3 is buffered by the buffer plug 7, the end part of the piston rod 3 is contacted with the sliding cover 1401, the hydraulic oil in the sliding cover 1401 is discharged from the oil hole 1403 on the sliding cover 1401, the speed of the piston rod 3 when retracting is further buffered by matching with the second buffer spring 1402 under the throttling action, rigid impact caused by the too high speed when the piston 6 retracts is avoided, and bidirectional buffering of the hydraulic oil cylinder.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (5)
1. The utility model provides a hydraulic cylinder with high shock-absorbing capacity, a serial communication port, includes cylinder (1), be provided with oil pocket (2) in cylinder (1), be provided with piston rod (3) in oil pocket (2), cylinder (1) one end is provided with end cover (4), end cover (4) central point puts and has seted up sliding hole (401), piston rod (3) slidable mounting is in end cover (4), end cover (4) bottom bilateral symmetry has seted up arc hole (403), end cover (4) bottom surface and oil pocket (2) inner wall fixed connection, the fixed cover of piston rod (3) tip is equipped with piston (6), piston (6) are close to end cover (4) one side and are provided with two arc picture peg (8), two arc picture peg (8) and two arc hole (403) one-to-one, arc picture peg (8) and arc hole (403) grafting cooperation, the piston rod (3) is provided with a first buffer spring (11) in a sliding manner, the end part of the first buffer spring (11) is fixedly connected with the bottom of the end cover (4), one side, far away from the end cover (4), of the piston (6) is provided with a buffer cover (5), the buffer cover (5) is fixedly arranged on the inner wall of the oil cavity (2), one side, close to the piston (6), of the buffer cover (5) is provided with a buffer groove (501), the bottom of the buffer groove (501) is provided with a second through hole (502), one side, near the buffer cover (5), of the piston (6) is fixedly connected with a buffer plug (7), the buffer plug (7) is in inserting fit with the buffer groove (501), one side, far away from the piston (6), of the oil cavity (2) is provided with a buffer cavity (14), the buffer cavity (14) is internally provided with a sliding cover (1401) in a sliding manner, one end of the second buffer spring (1402) is fixedly connected with the inner wall of the buffer cavity (14), the other end of the second buffer spring (1402) is fixedly connected with the bottom of the sliding cover (1401), and a plurality of oil holes (1403) are formed in the sliding cover (1401).
2. The hydraulic oil cylinder with high buffering performance according to claim 1, characterized in that a first oil port is formed in one side, close to the buffering cavity (14), of the cylinder barrel (1), a first oil pipe (9) is connected to the first oil port, a first adjusting valve (10) is arranged in the first oil pipe (9), a second oil port is formed in one side, close to the end cover (4), of the cylinder barrel (1), a second oil pipe (12) is connected to the second oil port, and a second adjusting valve (13) is arranged in the second oil pipe (12).
3. The hydraulic oil cylinder with high buffering performance according to claim 1, wherein the outer diameter of the first buffering spring (11) is smaller than the distance between the two arc-shaped inserting plates (8), the buffering plug (7) is of a circular truncated cone structure, a plurality of first through holes (402) are formed in the end cover (4), a plurality of threaded holes are formed in the end portion of the cylinder barrel (1), fixing bolts are arranged in the first through holes (402) and correspond to the threaded holes one to one, and the end cover (4) is in threaded connection with the threaded holes in the cylinder barrel (1) through the fixing bolts.
4. The hydraulic oil cylinder with high buffering performance as claimed in claim 1, wherein the piston (6) is slidably mounted in the oil cavity (2), a sealing ring (601) is arranged between the oil cavity (2) and the piston (6), the sealing ring (601) is sleeved on the piston (6), and a dust-proof oil seal (404) is arranged at the top of the end cover (4).
5. A working method of a hydraulic oil cylinder with high buffering performance is characterized by comprising the following steps:
the method comprises the following steps: injecting hydraulic oil from a first oil pipe (9), enabling the hydraulic oil to enter the oil cavity (2) from a first oil port, pushing a piston (6) at the end part of the piston rod (3) to move towards the end cover (4) by the hydraulic oil, when the piston (6) is about to move to the end cover (4), the first regulating valve (10) is started, the injection speed of the hydraulic oil is reduced, the running speed of the piston rod (3) is reduced, when the piston (6) contacts the first buffer spring (11), the first buffer spring (11) buffers the running speed of the piston rod (3), at the moment, the arc-shaped inserting plate (8) at the end part of the piston (6) is inserted into the arc-shaped hole (403) at the bottom of the end cover (4), hydraulic oil in the arc-shaped hole (403) flows out from a gap on the arc-shaped hole (403) under the extrusion action, a throttling effect is formed, and the running speed of the piston rod (3) is further buffered;
step two: injecting hydraulic oil from a second oil pipe (12), enabling the hydraulic oil to enter an oil cavity (2) from a second oil port, pushing a piston (6) to move towards a buffer cavity (14), starting a second regulating valve (13) when the piston (6) is about to move to a buffer cover (5), reducing the injection speed of the hydraulic oil, reducing the running speed of a piston rod (3), inserting a buffer plug (7) at the end part of the piston (6) into a buffer groove (501) on the buffer cover (5), buffering the running speed of the piston rod (3) by the buffer plug (7), enabling the end part of the piston rod (3) to be in contact with a sliding cover (1401), discharging the hydraulic oil in the sliding cover (1401) from an oil hole (1403) on the sliding cover (1401), and further buffering the running speed of the piston rod (3) by matching with the second buffer spring (1402) under the throttling action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113898780A (en) * | 2021-12-10 | 2022-01-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Function separation control device matched with flow control mechanism |
| CN116950953A (en) * | 2023-08-03 | 2023-10-27 | 无锡市普亚机械制造有限公司 | Safety type hydraulic cylinder with leakage prevention function |
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