CN114087256A - Servo hydraulic cylinder - Google Patents
Servo hydraulic cylinder Download PDFInfo
- Publication number
- CN114087256A CN114087256A CN202111016045.4A CN202111016045A CN114087256A CN 114087256 A CN114087256 A CN 114087256A CN 202111016045 A CN202111016045 A CN 202111016045A CN 114087256 A CN114087256 A CN 114087256A
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- Prior art keywords
- sleeve
- piston rod
- piston
- box
- oil
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 230000000694 effects Effects 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000001050 lubricating effect Effects 0.000 claims description 8
- 239000003921 oil Substances 0.000 abstract description 55
- 239000010720 hydraulic oil Substances 0.000 abstract description 19
- 239000010410 layer Substances 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 27
- 230000008569 process Effects 0.000 description 26
- 239000010687 lubricating oil Substances 0.000 description 22
- 239000007788 liquid Substances 0.000 description 17
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 210000003781 tooth socket Anatomy 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- F15B15/17—Characterised by the construction of the motor unit of the straight-cylinder type of differential-piston 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
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
-
- 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
-
- 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
- F15B15/1485—Special measures for cooling or heating
-
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N9/00—Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent
- F16N9/04—Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent with reservoir on or in a reciprocating, rocking, or swinging member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
The invention discloses a servo hydraulic oil cylinder which comprises a cylinder body, wherein a piston rod is inserted into the cylinder body, a mounting plate is installed at the top end of the piston rod, a first sleeve is sleeved on the outer surface of the cylinder body, a first piston is movably arranged in the first sleeve, a linkage rod is installed on the top wall of the first piston and fixedly connected with the mounting plate, a first water box and a second water box are respectively sleeved on the outer surface of the first sleeve, the first sleeve is communicated with the first water box, and a first pressing plate is movably arranged in the second water box. According to the invention, the cooling liquid is injected into the interlayer of the double-layer dust cover to reduce the temperature of the piston rod, so that the high temperature generated by the piston rod subjected to friction is prevented from being transferred into the oil cylinder in a heat conduction mode, and the phenomenon that the temperature of hydraulic oil in the oil cylinder is increased to cause the deterioration of the hydraulic oil is avoided.
Description
Technical Field
The invention relates to the technical field of hydraulic oil cylinders, in particular to a servo hydraulic oil cylinder.
Background
The hydraulic oil cylinder is one of important components in a hydraulic system and is a common mechanical part, and a plurality of large mechanical devices are provided with the hydraulic oil cylinder.
Through the retrieval, chinese patent No. CN111894944A discloses a servo hydraulic cylinder, including the hydro-cylinder main part, the output of hydro-cylinder main part is located one side, and one side sliding connection of hydro-cylinder main part has the piston rod, and the one end fixedly connected with mounting panel of hydro-cylinder main part is kept away from to the piston rod, installs dustproof mechanism and fat liquoring mechanism between mounting panel and the hydro-cylinder main part, and the equal fixedly connected with fixed plate in middle part of the last lower extreme and front and back side of mounting panel all installs buffer gear on the fixed plate, and the mid-mounting of piston rod has the spacing ring.
Although the servo hydraulic oil cylinder can avoid foreign matters such as dust in the air from being attached to the piston rod to damage the piston of the oil cylinder body, the servo hydraulic oil cylinder still has the following defects:
1. because the dustproof sleeve isolates the piston rod from contacting with the outside air, heat generated by mutual friction between the piston rod and the oil cylinder cannot be rapidly dissipated in the working process, and the heat accumulated between the dustproof sleeve and the piston rod is transferred into the oil cylinder in a heat conduction mode, so that the temperature in the oil cylinder is increased, the hydraulic oil is deteriorated, and the service life of the hydraulic oil is shortened;
2. if the dust is too much in the air or the dust diameter is different, consequently, when outside air passes through the inside of ventilation hole entering fixed pipe, the filter screen can be blockked up, leads to the unable normal entering of air in the fixed pipe to cause the unable normal removal of first clamp plate.
To this end, a servo hydraulic ram is proposed.
Disclosure of Invention
The invention aims to provide a servo hydraulic oil cylinder, which aims to solve the problems that in the background technology, heat generated by mutual friction between a piston rod and an oil cylinder cannot be quickly dissipated, and heat accumulated between a dustproof sleeve and the piston rod is transferred to the inside of the oil cylinder in a heat conduction mode, so that the temperature in the oil cylinder rises, hydraulic oil is deteriorated, and the service life of the hydraulic oil is shortened.
In order to achieve the purpose, the invention provides the following technical scheme:
a servo hydraulic oil cylinder comprises a cylinder body, a piston rod is inserted into the cylinder body, a mounting plate is mounted at the top end of the piston rod, a first sleeve is sleeved on the outer surface of the cylinder body, air holes are formed in the side wall of the first sleeve, a first piston is movably arranged in the first sleeve, a linkage rod is mounted on the top wall of the first piston and fixedly connected with the mounting plate, a first water box and a second water box are respectively sleeved on the outer surface of the first sleeve, the first sleeve is communicated with the first water box, a first pressing plate is movably arranged in the second water box, a first rotating shaft is horizontally mounted on the inner wall of the top of the second water box, a first gear is mounted on the first rotating shaft, a first rack meshed with the first gear is mounted on the top wall of the first pressing plate, a second rack meshed with the first gear is mounted on the bottom wall of the mounting plate, a water inlet is formed in the side wall of the second water box, the double-layer dustproof diaphragm sleeved on the surface of the piston rod is installed on the bottom wall of the installing plate and connected with the water inlet, and a lubricating mechanism is arranged at the top end of the cylinder body.
When the piston rod extends out of the cylinder body, the first piston movably arranged in the first sleeve is fixedly connected with the linkage rod, so that the linkage rod drives the first piston to move in the process of moving along with the mounting plate, meanwhile, the pressure in the first sleeve is reduced, liquid in the first water box is sucked into the first sleeve, the effect of balancing the pressure in the first sleeve is achieved, heat generated when the first piston slides along the inner wall of the first sleeve can be absorbed by the liquid, the effect of reducing the temperature is achieved, meanwhile, the mounting plate drives the second rack to move, the first gear is driven to rotate in the process of moving the second rack, under the effect of the first gear, the first rack mounted on the first pressure plate moves in the direction opposite to the moving direction of the second rack, and the liquid in the second water box is squeezed into the dustproof diaphragm from the water inlet by the first pressure plate, therefore, heat generated when the piston rod extends out of the cylinder body is absorbed, the effect of reducing the surface temperature of the piston rod is achieved, when the piston rod retracts into the cylinder body, the lubricating mechanism sprays lubricating oil to the surface of the piston rod, and therefore the effect of preventing the cylinder body from being damaged due to overlarge friction force between the piston rod and the cylinder body is achieved.
Preferably, the lubricating mechanism comprises two second sleeves symmetrically connected to the outer wall of the bottom end of the piston rod, an oil spraying box is arranged inside the second sleeves, a second piston is arranged inside the oil spraying box in a movable mode, a third piston is arranged at one end, far away from the oil spraying box, of the second sleeve in a movable mode, a second rotating shaft is arranged inside the second sleeve, a second gear is arranged on the second rotating shaft, a first tooth groove meshed with the second gear is formed in the linkage rod, a third rack is arranged on the third piston, and a second tooth groove meshed with the third rack is formed in the second rotating shaft.
Because the linkage rod is provided with the first tooth socket, when the piston rod retracts into the cylinder body, the linkage rod drives the second gear to rotate, in the process of rotating the second gear, the second rotating shaft rotates along with the second gear and drives the third rack arranged on the third piston to move downwards, so that the pressure in the second sleeve is increased, the second piston in the oil spraying box moves downwards, the lubricating oil in the oil spraying box is sprayed to the surface of the piston rod through the spray head, the friction force between the piston rod and the cylinder body is reduced, the effect of preventing the piston rod from being damaged due to the temperature rise caused by the overlarge friction force between the piston rod and the cylinder body is achieved, meanwhile, the lubricating oil sprayed on the surface of the piston rod is attached to the surface of the piston rod, when the piston rod extends out again, the piston rod drives the linkage rod to move, and because the linkage rod is provided with the first tooth socket meshed with the second gear, therefore, the linkage rod drives the second gear to rotate in the moving process, the second gear drives the second rotating shaft to rotate, the second rotating shaft is provided with a second tooth groove meshed with a third rack arranged on the third piston, so that in the rotating process of the second rotating shaft, the third rack meshed with the second tooth groove is driven to extend out of the second sleeve, in the process that the third rack extends out of the second sleeve, the third piston is driven to move together, in the moving process of the third piston, the second sleeve is in a negative pressure state, and therefore part of lubricating oil attached to the surface of the piston rod can be sucked back into the oil spraying box again through the spray head, and the effect of recycling the redundant lubricating oil on the surface of the piston rod is achieved.
Preferably, a spring is installed on the inner top wall of the first water box, a second pressing plate is movably arranged in the first water box, and the second pressing plate is fixedly connected with the spring.
In the process that the piston rod resets, the mounting panel drives the gangbar and moves to make first piston slide in the inside of first sleeve, with the water extrusion entering first water box in the first sleeve, at this in-process, because the spring promotes the second clamp plate, reduced the speed that liquid flowed into in the first water box, consequently played the effect that reduces the speed that the piston rod resets.
Preferably, the second sleeve is provided with a water tank, the inner edge and the outer edge of the water tank are respectively fixedly connected with the inner layer and the outer layer of the dustproof diaphragm, the water tank is provided with a water pipe, and one end of the water pipe is fixedly connected with the water inlet.
Because the contact of piston rod and air has been completely cut off to dustproof diaphragm, consequently, because the produced heat gathering of friction is in the space between dustproof diaphragm and piston rod between piston rod and the cylinder body, in the inlet pipe flows into by the water inlet, and the liquid in the intermediate layer of basin flow direction dustproof diaphragm again can be as the medium to make the space temperature between dustproof diaphragm and the piston rod descend through heat-conducting mode, played and prevented that the high temperature and lead to the rotten effect of hydraulic oil in the cylinder body.
Preferably, a plurality of spray heads are installed at the bottom end of the oil spraying box.
In the retraction process of the piston rod, lubricating oil in the oil box can be uniformly attached to the surface of the piston rod through the spray head, so that the friction force between the piston rod and the cylinder body is reduced, and the effect of reducing the damage probability of the hydraulic cylinder is achieved.
Preferably, an oil pipe which penetrates through the second sleeve and is connected with an external oil tank is installed on the side wall of the oil spraying box.
After the oil in the oil spraying box is consumed, lubricating oil is injected into the oil spraying box through the oil pipe, the oil spraying box is ensured to be capable of spraying oil to the surface of the piston rod normally, and the effect of preventing the hydraulic cylinder from being damaged due to the fact that the surface of the piston rod is not provided with enough lubricating oil is achieved.
Compared with the prior art, the invention has the beneficial effects that:
1. the temperature of the piston rod is reduced by injecting cooling liquid into the interlayer of the dustproof diaphragm, and the phenomenon that hydraulic oil is deteriorated due to the fact that high temperature generated by the piston rod after friction is transmitted to the oil cylinder in a heat conduction mode is avoided.
2. Make the piston rod drive the second rack and remove when outwards stretching out, can drive the first rack antiport rather than the meshing through the first gear with second rack meshing of installation in the second water box to promote first clamp plate, make first clamp plate with the coolant liquid extrusion in the second water box get into dustproof diaphragm's intermediate layer, because have certain resistance during the extrusion coolant liquid simultaneously, consequently, played the effect that reduces the piston rod and stretched out speed.
3. When the piston rod retracts, the spring pushes the second pressing plate, so that the speed of liquid flowing into the first water box is reduced, the speed of the piston rod retracting into the cylinder body is reduced, and the effect of preventing the temperature of the hydraulic cylinder from rising due to the fact that the piston rod and the cylinder body rub fast is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged view taken at B of FIG. 3 in accordance with the present invention;
FIG. 6 is a front cross-sectional view of a second sleeve of the present invention;
fig. 7 is a right side view of a second sleeve of the present invention.
In the figure: 1. a cylinder body; 2. a piston rod; 3. mounting a plate; 4. a first sleeve; 5. a first piston; 6. a linkage rod; 7. a first water box; 8. a second water box; 9. a first platen; 10. a first rotating shaft; 11. a first gear; 12. a first rack; 13. a second rack; 14. a water inlet; 15. a dust-proof diaphragm; 16. a second sleeve; 17. an oil spraying box; 18. a second piston; 19. a third piston; 20. a second rotating shaft; 21. a second gear; 22. a third rack; 23. a spring; 24. a second platen; 25. a water tank; 26. a water pipe; 27. a spray head; 28. and (4) an oil pipe.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, the present invention provides a servo hydraulic cylinder, which has the following technical scheme:
a servo hydraulic oil cylinder comprises a cylinder body 1, a piston rod 2 is inserted into the cylinder body 1, a mounting plate 3 is mounted at the top end of the piston rod 2, a first sleeve 4 is sleeved on the outer surface of the cylinder body 1, air holes are formed in the side wall of the first sleeve 4, a first piston 5 is movably arranged in the first sleeve 4, a linkage rod 6 is mounted on the top wall of the first piston 5, the linkage rod 6 is fixedly connected with the mounting plate 3, a first water box 7 and a second water box 8 are respectively sleeved on the outer surface of the first sleeve 4, the first sleeve 4 is communicated with the first water box 7, a first pressing plate 9 is movably arranged in the second water box 8, a first rotating shaft 10 is horizontally mounted on the inner wall of the top of the second water box 8, a first gear 11 is mounted on the first rotating shaft 10, a first rack 12 meshed with the first gear 11 is mounted on the first pressing plate 9, a second rack 13 meshed with the first gear 11 is mounted on the bottom wall of the mounting plate 3, a water inlet 14 is formed in the side wall of the second water box 8, a double-layer dustproof diaphragm 15 sleeved on the surface of the piston rod 2 is installed on the bottom wall of the mounting plate 3, the dustproof diaphragm 15 is connected with the water inlet 14, and a lubricating mechanism is arranged at the top end of the cylinder body 1.
When the piston rod 2 extends out of the cylinder body 1, the first piston 5 movably arranged in the first sleeve 4 is fixedly connected with the linkage rod 6, so that the first piston 5 is driven to move in the process that the linkage rod 6 moves along with the mounting plate 3, meanwhile, as the pressure in the first sleeve 4 is reduced, the liquid in the first water box 7 is sucked into the first sleeve 4 to play a role in balancing the pressure in the first sleeve 4, and the heat generated when the first piston 5 slides along the inner wall of the first sleeve 4 can be absorbed by the liquid to play a role in reducing the temperature, meanwhile, the mounting plate 3 drives the second rack 13 to move, in the process that the second rack 13 moves, the first gear 11 is driven to rotate, under the action of the first gear 11, the first rack 12 arranged on the first pressing plate 9 moves in a direction opposite to the moving direction of the second rack 13, the first pressing plate 9 is enabled to extrude the liquid in the second water box 8 into the dustproof diaphragm 15 from the water inlet 14, so that heat generated when the piston rod 2 extends out of the cylinder body 1 is absorbed, the effect of reducing the surface temperature of the piston rod 2 is achieved, when the piston rod 2 retracts into the cylinder body 1, the lubricating mechanism sprays lubricating oil on the surface of the piston rod 2, and the effect of preventing the cylinder body 1 from being damaged due to overlarge friction force between the piston rod 2 and the cylinder body 1 is achieved.
As an embodiment of the present invention, referring to fig. 6, the lubricating mechanism includes two second sleeves 16 symmetrically connected to the outer wall of the bottom end of the piston rod 2, an oil spray box 17 is installed inside the second sleeves 16, a second piston 18 is movably disposed inside the oil spray box 17, a third piston 19 is movably disposed at one end of the second sleeves 16 far away from the oil spray box 17, a second rotating shaft 20 is installed inside the second sleeves 16, a second gear 21 is installed on the second rotating shaft 20, a first tooth socket meshed with the second gear 21 is disposed on the linkage rod 6, a third rack 22 is installed on the third piston 19, and a second tooth socket meshed with the third rack 22 is disposed on the second rotating shaft 20.
Because the linkage rod 6 is provided with the first tooth socket, when the piston rod 2 retracts into the cylinder body 1, the linkage rod 6 drives the second gear 21 to rotate, in the process of rotating the second gear 21, the second rotating shaft 20 rotates along with the second rotating shaft and drives the third rack 22 arranged on the third piston 19 to move downwards, so that the pressure in the second sleeve 16 is increased, the second piston 18 in the oil injection box 17 moves downwards, lubricating oil in the oil injection box 17 is sprayed to the surface of the piston rod 2 through the spray head 27, the friction force between the piston rod 2 and the cylinder body 1 is reduced, the effect of preventing the piston rod 2 from being damaged due to temperature rise caused by overlarge friction force between the piston rod 2 and the cylinder body 1 is achieved, meanwhile, the lubricating oil sprayed on the surface of the piston rod 2 is attached to the surface of the piston rod 2, when the piston rod 2 extends out again, the piston rod 2 drives the linkage rod 6 to move, as the linkage rod 6 is provided with the first tooth socket meshed with the second gear 21, the second gear 21 is driven to rotate in the moving process of the linkage rod 6, and the second rotating shaft 20 is driven to rotate by the second gear 21, since the second rotating shaft 20 is formed with the second teeth grooves engaged with the third rack 22 installed on the third piston 19, thus, during the rotation of the second rotating shaft 20, the third rack 22 engaged with the second tooth groove is driven to extend out of the second sleeve 16, during the extension of the third rack 22 out of the second sleeve 16, the third piston 19 will be carried along, since the inside of the second sleeve 16 is in a negative pressure state during the movement of the third piston 19, the lubricating oil partially adhering to the surface of the piston rod 2 can be sucked back into the oil jet box 17 through the nozzle 27, and the function of recovering and using the excessive lubricating oil on the surface of the piston rod 2 is achieved.
Referring to fig. 5, as one embodiment of the present invention, a spring 23 is attached to an inner ceiling wall of the first water box 7, a second pressing plate 24 is movably disposed in the first water box 7, and the second pressing plate 24 is fixedly connected to the spring 23.
In the process of resetting the piston rod 2, the mounting plate 3 drives the linkage rod 6 to move, so that the first piston 5 slides in the first sleeve 4 to extrude water in the first sleeve 4 into the first water box 7, and in the process, the spring 23 pushes the second pressing plate 24 to reduce the speed of liquid flowing into the first water box 7, so that the effect of reducing the resetting speed of the piston rod 2 is achieved.
Referring to fig. 3, in one embodiment of the present invention, a water tank 25 is installed on the second sleeve 16, the inner and outer edges of the water tank 25 are fixedly connected to the inner and outer layers of the dustproof diaphragm 15, respectively, a water pipe 26 is installed on the water tank 25, and one end of the water pipe 26 is fixedly connected to the water inlet 14.
Because the dustproof diaphragm 15 isolates the contact between the piston rod 2 and the air, heat generated by friction between the piston rod 2 and the cylinder body 1 is gathered in a space between the dustproof diaphragm 15 and the piston rod 2, flows into the water pipe 26 from the water inlet 14, and then flows into a sandwich layer of the dustproof diaphragm 15 through the water tank 25 to be used as a medium, the temperature of the space between the dustproof diaphragm 15 and the piston rod 2 is reduced in a heat conduction mode, and the function of preventing hydraulic oil in the cylinder body 1 from deteriorating due to overhigh temperature is achieved.
Referring to fig. 6, a plurality of nozzles 27 are attached to the bottom end of the oil jet box 17 as an embodiment of the present invention.
In the process of retracting the piston rod 2, lubricating oil in the oil injection box 17 can be uniformly attached to the surface of the piston rod 2 through the spray head 27, so that the friction force between the piston rod 2 and the cylinder body 1 is reduced, and the effect of reducing the damage probability of the hydraulic cylinder is achieved.
Referring to fig. 1, an oil pipe 28 is installed on a side wall of the oil jet box 17 to penetrate through the second sleeve 16 and be connected with an external oil tank.
After the oil in the oil injection box 17 is consumed, lubricating oil is injected into the oil injection box 17 through the oil pipe 28, so that the oil injection box 17 can normally inject oil to the surface of the piston rod 2, and the effect of preventing the hydraulic cylinder from being damaged due to the fact that the surface of the piston rod 2 does not have enough lubricating oil is achieved.
The working principle is as follows: when the piston rod 2 extends out of the cylinder body 1, the first piston 5 movably arranged in the first sleeve 4 is fixedly connected with the linkage rod 6, so that the first piston 5 is driven to move in the process that the linkage rod 6 moves along with the mounting plate 3, meanwhile, as the pressure in the first sleeve 4 is reduced, the liquid in the first water box 7 is sucked into the first sleeve 4 to play a role in balancing the pressure in the first sleeve 4, and heat generated when the first piston 5 slides along the inner wall of the first sleeve 4 can be absorbed by the liquid to play a role in reducing the temperature, so that the first piston 5 can be prevented from being heated and deformed, meanwhile, the mounting plate 3 drives the second rack 13 to move, in the process that the second rack 13 moves, the first gear 11 is driven to rotate, and under the action of the first gear 11, the first rack 12 mounted on the first pressing plate 9 moves in a direction opposite to the moving direction of the second rack 13, the first pressing plate 9 is enabled to extrude the liquid in the second water box 8 into the water pipe 26 from the water inlet 14, the liquid flows into the dustproof diaphragm 15 through the water pipe 26, so that heat generated when the piston rod 2 extends out of the cylinder body 1 is absorbed, and the effect of reducing the surface temperature of the piston rod 2 is achieved, because the linkage rod 6 is provided with the first tooth socket, when the piston rod 2 retracts into the cylinder body 1, the linkage rod 6 drives the second gear 21 to rotate, in the rotating process of the second gear 21, the second rotating shaft 20 rotates along with the second gear, and drives the third rack 22 arranged on the third piston 19 to move downwards, so that the pressure in the second sleeve 16 is increased, the second piston 18 in the oil injection box 17 moves downwards, lubricating oil in the oil injection box 17 is sprayed to the surface of the piston rod 2 through the spray head 27, the friction force between the piston rod 2 and the cylinder body 1 is reduced, and the effect of preventing the piston rod 2 from being heated due to the overlarge friction force between the piston rod 2 and the cylinder body 1, thereby preventing the temperature from rising and causing the piston rod 2 from being heated due to overlarge friction force The effect of the loss is that, at the same time, the lubricating oil sprayed on the surface of the piston rod 2 will be attached to the surface of the piston rod 2, when the piston rod 2 is extended again, the piston rod 2 drives the linkage rod 6 to move, because the linkage rod 6 is provided with a first tooth space engaged with the second gear 21, the linkage rod 6 will drive the second gear 21 to rotate in the moving process, and drive the second rotating shaft 20 to rotate through the second gear 21, because the second rotating shaft 20 is provided with a second tooth space engaged with the third rack 22 installed on the third piston 19, in the rotating process of the second rotating shaft 20, the third rack 22 engaged with the second tooth space will be driven to extend out of the second sleeve 16, in the extending process of the third rack 22 out of the second sleeve 16, the third piston 19 will be driven to move together, in the moving process of the third piston 19, the inside of the second sleeve 16 is in a negative pressure state, therefore, part of the lubricating oil attached to the surface of the piston rod 2 can be sucked back into the oil spraying box 17 through the spray head 27, the effect of recycling redundant lubricating oil on the surface of the piston rod 2 is achieved, meanwhile, after the oil in the oil spraying box 17 is consumed, the lubricating oil is injected into the oil spraying box 17 through the oil pipe 28, the oil spraying box 17 is ensured to normally spray oil on the surface of the piston rod 2, the effect of preventing the hydraulic cylinder from being damaged due to the fact that the surface of the piston rod 2 does not have enough lubricating oil, in the process of resetting the piston rod 2, the mounting plate 3 drives the linkage rod 6 to move, so that the first piston 5 slides in the first sleeve 4, water in the first sleeve 4 is squeezed into the first water box 7, in the process, due to the fact that the spring 23 pushes the second pressing plate 24, the speed of liquid flowing into the first water box 7 is reduced, and the effect of preventing the temperature from rising and causing the hydraulic cylinder to be damaged due to the fact that the speed of relative movement between the piston rod 2 and the cylinder body 1 is too fast The effect of damage.
The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a servo hydraulic cylinder, includes cylinder body (1), insert on cylinder body (1) and be equipped with piston rod (2), its characterized in that: mounting panel (3) are installed on the top of piston rod (2), the surface cover of cylinder body (1) is equipped with first sleeve (4), the bleeder vent has been seted up on the lateral wall of first sleeve (4), the inside activity of first sleeve (4) is equipped with first piston (5), install gangbar (6) on the roof of first piston (5), gangbar (6) and mounting panel (3) fixed connection, the surface of first sleeve (4) is overlapped respectively and is equipped with first water box (7) and second water box (8), first sleeve (4) and first water box (7) intercommunication, the inside activity of second water box (8) is equipped with first clamp plate (9), horizontal mounting has first axis of rotation (10) on the inner wall at second water box (8) top, install first gear (11) on first axis of rotation (10), install on the roof of first clamp plate (9) first rack (12) with first gear (11) meshing, install on the diapire of mounting panel (3) second rack (13) with first gear (11) meshing, water inlet (14) have been seted up on the lateral wall of second water box (8), install on the diapire of mounting panel (3) and establish double-deck dustproof diaphragm (15) on piston rod (2) surface at the cover, dustproof diaphragm (15) are connected with water inlet (14), the top of cylinder body (1) is equipped with lubricating mechanism.
2. A servo hydraulic ram as claimed in claim 1 wherein: lubricating mechanism includes two second sleeves (16) of symmetric connection on piston rod (2) bottom outer wall, the internally mounted of second sleeve (16) has oil spray box (17), the inside activity of oil spray box (17) has set second piston (18), the one end activity of keeping away from oil spray box (17) in second sleeve (16) has set third piston (19), install second axis of rotation (20) in second sleeve (16), install second gear (21) on second axis of rotation (20), set up the first tooth's socket with second gear (21) meshing on gangbar (6), install third rack (22) on third piston (19), set up the second tooth's socket with third rack (22) meshing on second axis of rotation (20).
3. A servo hydraulic ram as claimed in claim 1 wherein: the spring (23) is installed on the inner top wall of the first water box (7), a second pressing plate (24) is movably arranged in the first water box (7), and the second pressing plate (24) is fixedly connected with the spring (23).
4. A servo hydraulic ram according to claim 2 wherein: the water tank (25) is installed on the second sleeve (16), the inner edge and the outer edge of the water tank (25) are fixedly connected with the inner layer and the outer layer of the dustproof diaphragm (15) respectively, the water pipe (26) is installed on the water tank (25), and one end of the water pipe (26) is fixedly connected with the water inlet (14).
5. A servo hydraulic ram according to claim 2 wherein: and a plurality of spray heads (27) are installed at the bottom end of the oil spraying box (17).
6. A servo hydraulic ram according to claim 2 wherein: and an oil pipe (28) which penetrates through the second sleeve (16) and is connected with an external oil tank is arranged on the side wall of the oil spraying box (17).
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| CN202111016045.4A CN114087256B (en) | 2021-08-31 | 2021-08-31 | Servo hydraulic cylinder |
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| CN112211876A (en) * | 2020-10-28 | 2021-01-12 | 滁州三界外工业设计有限公司 | Buffer hydraulic oil cylinder |
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2021
- 2021-08-31 CN CN202111016045.4A patent/CN114087256B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005249136A (en) * | 2004-03-05 | 2005-09-15 | Taiyo Ltd | Heat insulation device unit |
| CN204344572U (en) * | 2014-11-21 | 2015-05-20 | 山西太钢不锈钢股份有限公司 | Collapsible cylinder piston rod protecting cover |
| CN104696313A (en) * | 2015-03-13 | 2015-06-10 | 山东钢铁股份有限公司 | Water film device of protective hydraulic cylinder and protection method thereof |
| CN205663678U (en) * | 2016-06-01 | 2016-10-26 | 象山兴辉气动液压机械厂 | Dustproof coolant liquid depressor |
| CN109139602A (en) * | 2018-09-28 | 2019-01-04 | 江苏顺达机械设备有限公司 | A kind of hydraulic mechanical equipment removed with foreign matter with pre- heat function |
| CN112211876A (en) * | 2020-10-28 | 2021-01-12 | 滁州三界外工业设计有限公司 | Buffer hydraulic oil cylinder |
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| CN114087256B (en) | 2024-05-31 |
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Effective date of registration: 20240427 Address after: 214000 plant 68, No. 113, Huaqing Road, Wuxi City, Jiangsu Province Applicant after: WUXI FOREVER AUTOMATION TECHNOLOGY CO.,LTD. Country or region after: China Address before: 277000 Wansheng, intersection of Zhujiang Road and Guangchang West Road, Xuecheng District, Zaozhuang City, Shandong Province Room 903, building 11, Xinyuan International Community Applicant before: Liu Tiejun Country or region before: China |
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