CN112483506B - High-pressure oil cylinder structure with buffer function - Google Patents
High-pressure oil cylinder structure with buffer function Download PDFInfo
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- CN112483506B CN112483506B CN202011360771.3A CN202011360771A CN112483506B CN 112483506 B CN112483506 B CN 112483506B CN 202011360771 A CN202011360771 A CN 202011360771A CN 112483506 B CN112483506 B CN 112483506B
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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
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an 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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
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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
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The invention belongs to the field of hydraulic cylinder equipment, and particularly relates to a high-pressure oil cylinder structure with a buffering function, which comprises a cylinder barrel, wherein two ends of the cylinder barrel are detachably connected with end covers, one group of end covers are slidably connected with a high-pressure piston rod, the high-pressure piston rod is slidably connected with the cylinder barrel through a piston block, the piston block is used for buffering and protecting the high-pressure piston rod through a buffering component, one end, far away from the high-pressure piston rod, of the cylinder barrel is provided with an oil injection pipeline, and the oil injection pipeline is used for controlling flow through a control box. According to the invention, the double pistons are arranged on the high-pressure oil cylinder, so that the impact load of the oil cylinder can be shared to a certain extent when the oil cylinder works, the limit borne by the buffer mechanism in the high-pressure and high-load process is further reduced, the buffer effect of the buffer mechanism in the actual use process is improved, meanwhile, the damage of the buffer mechanism in the long-term use process is avoided, and the service life of the device is prolonged.
Description
Technical Field
The invention belongs to the field of hydraulic oil cylinder equipment, and particularly relates to a high-pressure oil cylinder structure with a buffering function.
Background
The high-pressure oil cylinder belongs to one kind of hydraulic cylinder, and is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines. However, as the use requirement of the hydraulic industry on the high-pressure oil cylinder is continuously improved, the buffer function of the high-pressure oil cylinder in the actual use process is urgently needed to be perfected.
At present, the common high-pressure oil cylinder in the market mainly carries out hydraulic operation through a single piston block, at this moment, the buffer effect of the device is realized by the buffer sleeve or the buffer ring on the piston block only for the buffer mechanism of the oil cylinder, but the buffer effect of the single buffer ring, which can be played by the pressure of the instant explosion when the oil cylinder is impacted by high pressure, is lower, the serious damage of the buffer mechanism can be caused, and when the oil cylinder works under the condition of lower buffer effect, the piston block is easy to be worn by causing unrecoverable abrasion, and the service life of the oil cylinder can be greatly reduced after long-term use.
For this reason, we propose a high-pressure cylinder structure with a buffering function to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the problems, and provides the high-pressure oil cylinder structure with the buffering function, which is used for sharing the pressure applied to the oil cylinder during high-pressure impact and improving the buffering effect in the oil cylinder through double-cavity operation.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a high pressure oil cylinder structure with buffer function, includes the cylinder, the end cover has all been dismantled at the both ends of cylinder, and one of them a set of end cover sliding connection has high pressure piston rod, high pressure piston rod passes through piston block and cylinder sliding connection, the piston block carries out buffer protection to high pressure piston rod through buffer assembly, the one end that the high pressure piston rod was kept away from to the cylinder is equipped with annotates oil pipe, annotate oil pipe and carry out flow control through the control box.
In the high-pressure oil cylinder structure with the buffering function, the front end cover is detachably connected with one end of the cylinder barrel, the front end cover is in sliding connection with the high-pressure piston rod, the rear end cover is detachably connected with the other end of the cylinder barrel, and the middle cover is arranged in the middle of the cylinder barrel.
In the high-pressure oil cylinder structure with the buffering function, the front end cover and the rear end cover are respectively provided with a groove, two ends of the cylinder barrel are respectively connected with the grooves in a threaded mode, one end, close to the grooves, of the cylinder barrel is provided with a mounting hole, and the end covers are fixedly connected with the mounting holes through bolts.
In the high-pressure oil cylinder structure with the buffering function, the sealing ring is fixedly connected to one end, close to the end cover, of the cylinder barrel, the annular groove is formed in the end cover, the sealing ring is connected with the annular groove in a matched mode, and the cross section of the sealing ring is of a trapezoid structure.
In the high-pressure oil cylinder structure with the buffering function, one end of the front end cover, which is close to the high-pressure piston rod, is provided with the clamping-in type dust ring and the piston rod sealing ring, and the clamping-in type dust ring and the piston rod sealing ring are matched.
In the high-pressure oil cylinder structure with the buffering function, the high-pressure piston rod is provided with the external thread, the inner side of the piston block is in threaded connection with the high-pressure piston rod, and the outer side of the piston block is provided with the piston sealing ring and the guide supporting ring.
In the high-pressure oil cylinder structure with the buffering function, the buffering assembly comprises a first buffering block and a second buffering block, the first buffering block and the high-pressure piston rod are arranged in a matched mode, close to the piston block at one end of the middle cover, of the second buffering block and the high-pressure piston rod, and the second buffering block and the high-pressure piston rod are arranged in a matched mode, close to the piston block at one end of the rear end cover, of the second buffering block.
In the high-pressure oil cylinder structure with buffering function, one end of the cylinder barrel, which is close to the middle cover, is provided with an inclined plane, one end of the first buffering block is matched with the inclined plane, the other end of the first buffering block is movably connected with the piston block through the first spring, the first buffering block adopts a round table-shaped structure, the second buffering block is slidably connected with the rear end cover through the second spring, and the second buffering block adopts a T-shaped structure.
In the high-pressure oil cylinder structure with the buffering function, the oil injection pipeline comprises an oil inlet, an oil outlet and an oil guide pipe, the oil inlet, the oil outlet and the oil guide pipe are all communicated with the control box, the oil inlet is formed in one end, close to the rear end cover, of the cylinder barrel, the oil guide pipe is arranged at one end, close to the middle cover, of the cylinder barrel, and the middle cover is matched with the oil guide pipe through the oil isolation ring.
In the high-pressure oil cylinder structure with the buffering function, the control box is rotationally connected with the oil sealing plate through the hand wheel, and the oil sealing plate is respectively matched with the oil inlet, the oil outlet and the oil guide pipe through the cylindrical sliding cavity.
The invention has the beneficial effects that: through setting up two pistons to high pressure oil cylinder for the hydro-cylinder can carry out certain sharing to impact load when carrying out the operation, and then reduces the limit that buffer gear bore when high pressure, high load, improves buffer effect in the buffer gear in-service use, avoids buffer gear to receive the damage in long-term use simultaneously, increases the life of device.
When the device is used, a worker adjusts the operation mode of the oil cylinder through the control box according to the actual condition loaded by the high-pressure oil cylinder, when the oil cylinder works under high pressure and high load, the control box is used for realizing the double-cavity operation of the oil cylinder, so that when the oil cylinder works under load, the high-pressure piston rod drives the piston block to buffer the piston block through the first buffer block and the second buffer block respectively, the pressure borne by the oil cylinder is shared and buffered, and the buffering effect of the oil cylinder is improved; when the oil cylinder normally works, the single-cavity operation of the oil cylinder is realized through the control box, so that when the oil cylinder works under load, the high-pressure piston rod drives the piston block to perform buffer work through the single buffer block, the service efficiency of the oil cylinder is improved, the single piston block is prevented from being damaged in the long-term use process, the rejection of the oil cylinder is avoided, and the service life of the device is prolonged.
The invention is characterized in that: utilize the double-chamber operation of high pressure hydro-cylinder for the hydro-cylinder can carry out certain sharing to the force that the piston piece received in the twinkling of an eye when receiving high pressure impact, avoid buffer gear to receive the damage at high pressure, high load's in-process, simultaneously through the operating mode of adjustment hydro-cylinder, improve the utilization efficiency of piston, avoid the device to use through single buffer gear for a long time and make piston piece and hydro-cylinder produce wearing and tearing, improve the life of hydro-cylinder.
Drawings
FIG. 1 is a schematic view of the structure of the outside of a high-pressure cylinder with buffering function;
FIG. 2 is a schematic structural view of the inside of a high-pressure cylinder structure with buffering function provided by the invention;
FIG. 3 is a schematic diagram of a connection structure between an end cover and a cylinder in a high-pressure oil cylinder structure with a buffering function;
FIG. 4 is a schematic structural view of a buffering component in a high-pressure cylinder structure with buffering function according to the present invention;
fig. 5 is a schematic structural diagram of a control box in a high-pressure oil cylinder structure with a buffering function.
In the figure, a cylinder barrel 1, a mounting hole 11, a sealing ring 12, an inclined surface 13, a end cover 2, a front end cover 21, an end cover 22, a middle cover 23, a groove 24, a ring groove 25, a high-pressure piston rod 3, a clamping type 31 dustproof ring, a piston rod sealing ring 32, a piston block 4, a piston sealing ring 41, a guiding support ring 42, a buffer assembly 5, a buffer block 51, a buffer block 52, a buffer block 53, a spring 54, a second spring 54, an oil injection pipeline 6, an oil inlet 61, an oil outlet 62, an oil guide pipe 63, an oil isolation ring 64, a control box 7, a hand wheel 71, an oil sealing plate 72 and a sliding cavity 73.
Description of the embodiments
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
As shown in fig. 1-5, a high-pressure oil cylinder structure with a buffering function comprises a cylinder 1, wherein end covers 2 are detachably connected to two ends of the cylinder 1, the end covers 2 comprise a front end cover 21, a rear end cover 22 and a middle cover 23, one end of the cylinder 1 is detachably connected with the front end cover 21, the other end of the cylinder 1 is detachably connected with the rear end cover 22, and the middle cover 23 is arranged at the middle position of the cylinder 1.
Specific detachable connection mode: the front end cover 21 and the rear end cover 22 are respectively provided with a groove 24, the grooves 24 are provided with internal threads, two ends of the cylinder barrel 1 are respectively connected with the internal threads of the grooves 24 through external threads, one end of the cylinder barrel 1, which is close to the grooves 24, and the end cover 2 are respectively provided with a mounting hole 11, and the end cover 2 is fixedly connected with the mounting holes 11 through bolts and is used for fixedly connecting the end cover 2 with the cylinder barrel 1.
More specifically, the one end fixedly connected with sealing ring 12 that cylinder 1 is close to end cover 2, and end cover 2 is equipped with ring channel 25, and sealing ring 12 and ring channel 25 cooperation are connected, and the cross-section of sealing ring 12 adopts trapezium structure, improves the leakproofness of connecting between cylinder 1 and the end cover 2, avoids appearing the hydro-cylinder and appears leaking the problem in the in-service use.
Wherein a set of end cover 2 sliding connection has high-pressure piston rod 3, it is noted that front end cover 21 is equipped with the shaft hole, high-pressure piston rod 3 passes through shaft hole and front end cover 21 sliding connection, front end cover 21 is close to the one end of high-pressure piston rod 3 and is equipped with card income dust ring 31 and piston rod sealing washer 32, card income dust ring 31 sets up and keeps away from the one end of cylinder 1 at front end cover 21 and avoids external dust etc. to get into inside the cylinder 1 along with high-pressure piston rod 3, piston rod sealing washer 32 sets up the one end that is close to cylinder 1 at front end cover 21, improve the sealed effect between high-pressure piston rod 3 and the front end cover 21.
The high-pressure piston rod 3 is slidably connected with the cylinder barrel 1 through the piston block 4, and it is to be noted that the high-pressure piston rod 3 is provided with external threads, the inner side of the piston block 4 is in threaded connection with the high-pressure piston rod 3 through a threaded hole, a piston sealing ring 41 and a guide supporting ring 42 are arranged on the outer side of the piston block 4, and the tightness between the piston block 4 and the cylinder barrel 1 is improved.
The piston block 4 performs buffer protection on the high-pressure piston rod 3 through the buffer assembly 5, and it is noted that the buffer assembly 5 comprises a first buffer block 51 and a second buffer block 52, the first buffer block 51 and the piston block 4 of the high-pressure piston rod 3, which is close to one end of the middle cover 23, are matched, and the second buffer block 52 and the piston block 4 of the high-pressure piston rod 3, which is close to one end of the rear end cover 22, are matched, so that the sharing buffer work of the oil cylinder is realized.
Specifically, the one end that cylinder 1 is close to well lid 23 is equipped with the inclined plane, the one end and the inclined plane cooperation setting of first buffer block 51, the other end of first buffer block 51 is through first spring 53 and piston 4 swing joint, first buffer block 51 is equipped with the through-hole, first buffer block 51 passes through-hole and high-pressure piston rod 3 sliding connection, first buffer block 51 adopts round platform shape structure, second buffer block 52 passes through second spring 54 and rear end cover 22 sliding connection, rear end cover 22 is equipped with the slide, second buffer block 52 passes through second spring 54 and slide sliding connection, second buffer block 52 adopts T shape structure, the one end that second buffer block 52 kept away from rear end cover 22 is equipped with the constant head tank for high-pressure piston rod 3's location work, make piston rod 3 can share the buffering work through two sets of buffer blocks when two-chamber operation, improve high-pressure cylinder's buffering effect, avoid single piston 4 and buffer mechanism to appear damaging in long-term use simultaneously, lead to the scrapping of hydro-cylinder.
One end of the cylinder barrel 1 far away from the high-pressure piston rod 3 is provided with an oil injection pipeline 6, the oil injection pipeline 6 carries out flow control through the control box 7, and it is worth mentioning that the oil injection pipeline 6 comprises an oil inlet 61, an oil outlet 62 and an oil guide pipe 63, the oil inlet 61, the oil outlet 62 and the oil guide pipe 63 are all communicated with the control box 7, one end of the oil guide pipe 63 far away from the control box 7 is communicated with the cylinder barrel 1 through an oil duct, the oil inlet 61 is arranged at one end of the cylinder barrel 1 close to the rear end cover 22, the oil guide pipe 63 is arranged at one end of the cylinder barrel 1 close to the middle cover 23, the middle cover 23 is matched with the oil guide pipe 63 through an oil isolation ring 64, and the oil isolation ring 64 is fixedly connected with the middle cover 23 and used for isolating work of two oil ducts of the oil cylinder, and double-cavity operation of the oil cylinder is realized.
Specifically, the oil inlet 61 and the oil outlet 62 are horizontally arranged, the oil guide pipe 63, the oil inlet 61 and the oil outlet 62 are respectively and vertically arranged, the control box 7 is rotationally connected with the oil sealing plate 72 through the hand wheel 71, the oil sealing plate 72 adopts an arc structure, the oil sealing plate 72 is rotationally connected with the control box 7 through a bearing, and the oil sealing plate 72 is respectively matched with the oil inlet 61, the oil outlet 62 and the oil guide pipe 63 through the cylindrical sliding cavity 73, so that the switching and opening work of an oil duct in the oil cylinder is realized, and the functionality of the high-pressure oil cylinder is improved.
The principle of operation of the present invention will now be described as follows:
when the hydraulic control system is used, a worker adjusts the operation mode of the oil cylinder through the control box 7 according to the actual condition loaded by the high-pressure oil cylinder, and the specific adjustment process is as follows: the hand wheel 71 is rotated to drive the oil sealing plate 72 and the sliding cavity 73 of the control box 7 to slide, so that the oil sealing plate 72 is matched with a corresponding oil duct, when the oil cylinder works under high pressure and high load, the oil sealing plate 72 is far away from the oil inlet 61, the oil outlet 62 and the oil guide pipe 63, the oil duct can enter the oil outlet 62 and the oil guide pipe 63 smoothly, the double-cavity operation of the oil cylinder is realized, when the oil cylinder works under load, the high-pressure piston rod 3 drives the piston block 4 to buffer through the first buffer block 51 and the second buffer block 52 respectively, and in the buffer operation of the first buffer block 51, the buffer operation of the second buffer block 52 is realized through the slope matching of the first spring 53 and the cylinder barrel 1, and the buffer operation of the second spring 54 and the rear end cover 22 is realized, so that the pressure born by the oil cylinder is shared and buffered, and the buffer effect of the oil cylinder is improved; when the oil cylinder normally works, the oil sealing plate 72 rotates through the hand wheel 71 and the oil outlet 62 or the oil port of the oil guide pipe 63 is in sliding seal, so that single-cavity operation of the oil cylinder is realized, when the oil cylinder works in a load mode, the high-pressure piston rod 3 drives the piston block 4 to perform buffer work through a single buffer block, the service efficiency of the oil cylinder is improved, the piston block 4 is prevented from being worn due to damage of the buffer mechanism in the long-term use process of the single piston block 4, the oil cylinder is scrapped, and the service life of the device is prolonged.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The utility model provides a high pressure oil cylinder structure with buffer function, includes cylinder (1), its characterized in that, all can dismantle at the both ends of cylinder (1) and be connected with end cover (2), wherein a set of end cover (2) sliding connection has high pressure piston rod (3), high pressure piston rod (3) pass through piston block (4) and cylinder (1) sliding connection, piston block (4) are through buffer module (5) to high pressure piston rod (3) buffering protection, the one end that high pressure piston rod (3) was kept away from to cylinder (1) is equipped with oil injection pipeline (6), oil injection pipeline (6) carry out flow control through control box (7);
one end of the cylinder barrel (1) is detachably connected with a front end cover (21), the front end cover (21) is in sliding connection with the high-pressure piston rod (3), the other end of the cylinder barrel (1) is detachably connected with a rear end cover (22), and a middle cover (23) is arranged in the middle of the cylinder barrel (1);
the front end cover (21) and the rear end cover (22) are respectively provided with a groove (24), both ends of the cylinder barrel (1) are in threaded connection with the grooves (24), one end, close to the grooves (24), of the cylinder barrel (1) is provided with a mounting hole (11), and the end cover (2) is fixedly connected with the mounting hole (11) through bolts;
the buffer assembly (5) comprises a first buffer block (51) and a second buffer block (52), the first buffer block (51) and the piston block (4) of the high-pressure piston rod (3) close to one end of the middle cover (23) are arranged in a matched mode, and the second buffer block (52) and the piston block (4) of the high-pressure piston rod (3) close to one end of the rear end cover (22) are arranged in a matched mode;
one end of the cylinder barrel (1) close to the middle cover (23) is provided with an inclined plane, one end of the first buffer block (51) is matched with the inclined plane, the other end of the first buffer block (51) is movably connected with the piston block (4) through a first spring (53), the first buffer block (51) adopts a round table-shaped structure, the second buffer block (52) is slidably connected with the rear end cover (22) through a second spring (54), and the second buffer block (52) adopts a T-shaped structure;
the oil injection pipeline (6) comprises an oil inlet (61), an oil outlet (62) and an oil guide pipeline (63), wherein the oil inlet (61), the oil outlet (62) and the oil guide pipeline (63) are all communicated with the control box (7), the oil inlet (61) is arranged at one end, close to the rear end cover (22), of the cylinder barrel (1), the oil guide pipeline (63) is arranged at one end, close to the middle cover (23), of the cylinder barrel (1), and the middle cover (23) is matched with the oil guide pipeline (63) through an oil isolation ring (64);
the control box (7) is rotationally connected with an oil sealing plate (72) through a hand wheel (71), and the oil sealing plate (72) is respectively matched with the oil inlet (61), the oil outlet (62) and the oil guide pipe (63) through a cylindrical sliding cavity (73);
the hand wheel (71) is rotated to drive the oil sealing plate (72) and the sliding cavity (73) of the control box (7) to slide, so that the oil sealing plate (72) is matched with a corresponding oil duct, when the oil cylinder works under high pressure and high load, the oil sealing plate (72) is far away from the oil inlet (61), the oil outlet (62) and the oil guide pipe (63), the oil duct enters the oil outlet (62) and the oil guide pipe (63), when the oil cylinder works under load, the high-pressure piston rod (3) drives the piston block (4) to buffer through the first buffer block (51) and the second buffer block (52), in the buffer work of the first buffer block (51), the inclined planes of the first spring (53) and the cylinder barrel (1) are matched, in the buffer work of the second buffer block (52), the second spring (54) and the rear end cover (22) are buffered, and the pressure born by the oil cylinder is shared and buffered; when the oil cylinder works normally, the oil sealing plate (72) rotates through the hand wheel (71) to seal the oil outlet (62) or the oil port of the oil guide pipe (63) in a sliding mode, and when the oil cylinder works in a loading mode, the high-pressure piston rod (3) drives the piston block (4) to buffer through a single buffer block.
2. The high-pressure oil cylinder structure with the buffering function according to claim 1, wherein a sealing ring (12) is fixedly connected to one end, close to an end cover (2), of the cylinder barrel (1), an annular groove (25) is formed in the end cover (2), the sealing ring (12) is connected with the annular groove (25) in a matched mode, and a trapezoid structure is adopted in the section of the sealing ring (12).
3. The high-pressure oil cylinder structure with the buffering function according to claim 1, wherein a clamping-in type dust ring (31) and a piston rod sealing ring (32) are arranged at one end, close to the high-pressure piston rod (3), of the front end cover (21), and the clamping-in type dust ring (31) and the piston rod sealing ring (32) are matched.
4. The high-pressure oil cylinder structure with the buffering function according to claim 1, wherein the high-pressure piston rod (3) is provided with external threads, the inner side of the piston block (4) is in threaded connection with the high-pressure piston rod (3), and a piston sealing ring (41) and a guide supporting ring (42) are arranged on the outer side of the piston block (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011360771.3A CN112483506B (en) | 2020-11-27 | 2020-11-27 | High-pressure oil cylinder structure with buffer function |
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| CN202011360771.3A CN112483506B (en) | 2020-11-27 | 2020-11-27 | High-pressure oil cylinder structure with buffer function |
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| CN112483506B true CN112483506B (en) | 2023-07-04 |
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| CN113503287A (en) * | 2021-07-01 | 2021-10-15 | 燕山大学 | Double-cylinder barrel symmetric double-piston hydraulic cylinder without cylinder cover |
| CN113883125B (en) * | 2021-10-28 | 2023-12-22 | 山东远观恩福机械设备有限公司 | Metallurgical cylinder with multistage cushioning effect |
| CN114233719A (en) * | 2021-11-30 | 2022-03-25 | 江苏龙城鸿辉液压机电有限公司 | Buffer structure of ultra-large hydraulic hoist |
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| CN104595275B (en) * | 2014-11-30 | 2017-02-22 | 贵州红林机械有限公司 | Three-position precise air cylinder |
| CN105090159A (en) * | 2015-08-29 | 2015-11-25 | 济南大学 | Low-friction and quick-start hydraulic cylinder based on flutter mechanism |
| JP6649024B2 (en) * | 2015-09-30 | 2020-02-19 | 住友精密工業株式会社 | Hydraulic cylinder for aircraft landing gear |
| CN107299922A (en) * | 2017-08-03 | 2017-10-27 | 安徽科海压缩机制造有限公司 | A kind of buffering hydraulic cylinder |
| CN108050130A (en) * | 2017-12-30 | 2018-05-18 | 广东顺德普南气动科技有限公司 | Locking cylinder |
| CN108708886A (en) * | 2018-08-10 | 2018-10-26 | 苏州劳灵精密机械有限公司 | The energy saving cylinder of single cylinder single-piston formula times power and start module |
| CN110939629A (en) * | 2019-12-20 | 2020-03-31 | 福建省龙岩盛通液压有限公司 | Hydraulic cylinder with buffer function |
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2020
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