CN113982882B - Bulb connecting rod structure with bellows sealed - Google Patents
Bulb connecting rod structure with bellows sealed Download PDFInfo
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- CN113982882B CN113982882B CN202111261527.6A CN202111261527A CN113982882B CN 113982882 B CN113982882 B CN 113982882B CN 202111261527 A CN202111261527 A CN 202111261527A CN 113982882 B CN113982882 B CN 113982882B
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- ball
- connecting rod
- corrugated pipe
- tile
- rod structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention discloses a ball head connecting rod structure for sealing a corrugated pipe, and relates to the technical field of mechanical connecting rod transmission; the connecting device comprises a ball-head connecting rod structure, a corrugated pipe is sleeved outside the ball-head connecting rod structure, one end of the corrugated pipe is fixedly and hermetically connected with a connecting seat, the other end of the corrugated pipe is fixedly and hermetically connected with a base plate, and the ball-head connecting rod structure is arranged in a sealing cavity formed by the connecting seat, the corrugated pipe and the base plate. According to the corrugated pipe sealed ball-head connecting rod structure, the metal corrugated pipe is used for integrally sealing the ball-head connecting rod and then is used as a relatively independent component, so that oil vapor dissipation is effectively avoided.
Description
Technical Field
The invention relates to the technical field of mechanical connecting rod transmission, in particular to a ball connecting rod structure with a bellows seal.
Background
The ball-head connecting rod is one of key components of the oil-free plunger pump. The key characteristics of the oil-free plunger pump are that the working atmosphere is completely oil-free, grease-free and the like, the cleanliness of the transported gas is guaranteed to the greatest extent, and the spherical contact pair of the ball head connecting rod is lubricated, so that the ball head connecting rod is often a short plate of the cleanliness of the oil-free plunger pump. At present, the main sealing mode of the ball head connecting rod lubricating oil is that a dust cover or a clamp spring is arranged at the part of the ball head, so that the lubricating oil can be effectively prevented from leaking, but oil vapor at the journal part of the connecting rod cannot be prevented from escaping, and the cleanliness of the oil-free plunger pump transportation gas is affected.
Disclosure of Invention
The invention aims to provide a ball connecting rod structure sealed by a corrugated pipe, so as to solve the problems in the prior art, and the ball connecting rod is integrally sealed by a metal corrugated pipe and then used as a relatively independent part, thereby effectively avoiding oil vapor dissipation.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a ball-head connecting rod structure sealed by a corrugated pipe, which comprises a ball-head connecting rod structure, wherein the corrugated pipe is sleeved outside the ball-head connecting rod structure, one end of the corrugated pipe is fixedly and hermetically connected with a connecting seat, the other end of the corrugated pipe is fixedly and hermetically connected with a backing plate, the ball-head connecting rod structure is arranged in a sealing cavity formed by the connecting seat, the corrugated pipe and the backing plate, the connecting seat, the corrugated pipe and the backing plate form a sealed space for working of a spherical contact pair, and lubricating oil of the ball-head connecting rod, a ball tile and the contact pair is isolated from the external atmosphere, so that the lubricating oil is prevented from polluting external working gas, and substances such as dust and particles outside are prevented from polluting the spherical contact pair. The bellows sealed ball head connecting rod structure provided by the invention can be used as a transmission structure of oil-free plunger pumps and other equipment.
Optionally, the ball head connecting rod structure comprises a ball head connecting rod, the ball head connecting rod is preferably alloy structural steel such as 38CrMoAl, the surface carburization treatment is carried out on the ball head part by adopting an ultra-precise machining method, the surface roughness is less than 10nm, the contour precision is less than 0.005mm, the ball heads at the two ends of the ball head connecting rod are respectively wrapped in cavities formed by corresponding ball tiles, the ball heads at the two sides of the ball head connecting rod are respectively wrapped by spherical cavities formed by a first ball tile and two hemispherical tiles, an upper spherical contact pair and a lower spherical contact pair of the connecting rod are formed, and a first through hole is formed in the ball head connecting rod; the ball tile comprises a first ball tile and two hemispherical tiles, wherein the first ball tile and the hemispherical tiles are preferably made of brass and the like, the surface of the first ball tile and the hemispherical tiles are subjected to ultra-precise processing on the inner surface by adopting ultra-precise processing means, the surface roughness is less than 10nm, the contour precision is less than 0.005mm, one end of the first ball tile is fixedly abutted with the two hemispherical tiles, and a second through hole is formed in the other end of the first ball tile; the ball tile positioned above is fixedly arranged in the connecting seat, the ball tile positioned below is fixedly arranged in the corrugated pipe, a plugging sleeve is arranged at the bottom of the first ball tile positioned below, an oil cup is arranged in the plugging sleeve, the bottom of the oil cup is communicated with the plugging sleeve through a connecting hole, the top of the oil cup is communicated with the first ball tile positioned below the ball head connecting rod, and the plugging sleeve is communicated with the inside of the corrugated pipe through an oil return hole; the oil cup is internally provided with a steel ball capable of blocking the connecting hole, so that the one-way oil pumping function is realized, and a cylindrical pin is arranged at the communication position of the oil cup and the first ball tile.
Optionally, connecting flanges are fixedly arranged at two ends of the corrugated pipe, the bottom of the plugging sleeve is fixedly connected with the connecting flange below the corrugated pipe through a first screw, the connecting flange above the corrugated pipe is fixedly connected with the flange at the bottom of the connecting seat through a second screw, the top of the connecting seat is fixedly connected with an adjusting cover through a third screw, the adjusting cover is convenient for adjusting the total length of the ball head connecting rod structure, the adjusting cover is suitable for installation requirements, and the backing plate and the adjusting cover can relatively rotate at a certain angle, so that motion transmission is realized; the connecting flange below the corrugated pipe is fixedly connected with the backing plate through a fourth screw; the backing plate and the adjusting cover are respectively used for connecting two ends of the transmission structure.
Optionally, a blind hole is formed in the upper end of the backing plate, one end of the first screw is located in the blind hole of the backing plate, and the other end of the first screw penetrates through the connecting flange below the corrugated pipe and is fixedly connected with the bottom of the plugging sleeve.
Optionally, a first metal sealing element is arranged between the connecting flange above the corrugated pipe and the connecting seat, and a second metal sealing element is arranged between the connecting flange below the corrugated pipe and the backing plate.
Optionally, the bottom of the ball tile above is fixedly abutted with a threaded retainer ring, and the outer wall of the threaded retainer ring is fixedly connected with the inner wall of the connecting seat through threads; the ball tile located below is fixedly arranged in the corrugated pipe through a connecting sleeve, and the upper part of the plugging sleeve stretches into the connecting sleeve and is fixedly connected with the bottom of the first ball tile located below.
Optionally, the second through hole is formed in the center of the end face of the first ball tile, and the inner ball surface of the first ball tile is provided with an oil groove structure.
When the ball head connecting rod structure is vertically installed and used, lubricating oil is added into the corrugated pipe: lubricating oil enters the oil cup through the oil return hole of the sleeve: the steel ball in the oil cup plays a role of a one-way valve; under the action of the up-and-down motion and the steel ball one-way valve, lubricating oil is pumped into the ball tile at the bottom of the ball head connecting rod, and the lubrication of the spherical contact pair is realized through an oil groove in the ball tile; meanwhile, lubricating oil in the through hole of the ball head connecting rod is pumped into a spherical contact pair at the top of the connecting rod under the action of the steel ball one-way valve, and lubrication of the spherical contact pair is realized through a spherical tile oil groove structure; the lubricating oil at the top of the connecting rod falls into the corrugated pipe under the action of gravity to form a lubricating oil loop.
Compared with the prior art, the invention has the following technical effects:
the invention provides a metal bellows which is used for integrally sealing the ball head connecting rod and then is used as a relatively independent component, so that the oil vapor dissipation is effectively avoided, the problem of oil vapor pollution of the ball head connecting rod in the oil-free plunger pump is solved, and the ball head connecting rod is an ideal structure for mechanical transmission connection in a clean vacuum environment. Meanwhile, the oil groove and oil hole structure is designed, so that the lubrication effect of the ball head connecting rod is improved, and the service life is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a bellows seal ball joint connecting rod structure of the present invention;
FIG. 2 is a schematic view of a first ball tile structure according to the present invention;
FIG. 3 is a schematic diagram of a hemispherical suspension of the present invention;
FIG. 4 is a schematic diagram of a plugging structure according to the present invention;
FIG. 5 is a schematic diagram of the structure of the oil cup of the invention;
reference numerals illustrate: 1. backing plate 2, first screw 3, bellows 4, ball joint 5, first metal seal 6, second screw 7, connecting seat 8, third screw 9, adjustment cap 10, first ball shoe 11, hemispherical shoe 12, threaded retainer 13, connection sleeve 14, cylindrical pin 15, oil cup 16, steel ball 17, plug 18, fourth screw 19, second metal seal.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a ball connecting rod structure sealed by a corrugated pipe, so as to solve the problems in the prior art, and the ball connecting rod is integrally sealed by a metal corrugated pipe and then used as a relatively independent part, thereby effectively avoiding oil vapor dissipation.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to the drawings 1-5, the invention provides a ball-joint connecting rod structure sealed by a corrugated pipe, which comprises a ball-joint connecting rod structure, wherein a corrugated pipe 3 is sleeved outside the ball-joint connecting rod structure, one end of the corrugated pipe 3 is fixedly and hermetically connected with a connecting seat 7, the other end of the corrugated pipe 3 is fixedly and hermetically connected with a backing plate 1, the ball-joint connecting rod structure is arranged in a sealing cavity formed by the connecting seat 7, the corrugated pipe 3 and the backing plate 1, connecting flanges are fixedly arranged at two ends of the corrugated pipe 3, a plugging sleeve 17 is arranged at the bottom of the ball-joint connecting rod structure, the bottom of the plugging sleeve 17 is fixedly connected with the connecting flange below the corrugated pipe 3 through a first screw 2, a blind hole is formed at the upper end of the backing plate 1, one end of the first screw 2 is positioned in the blind hole of the backing plate 1, the other end of the first screw 2 penetrates through the connecting flange below the corrugated pipe 3 and is fixedly connected with the bottom of the plugging sleeve 17, the connecting flange above the corrugated pipe 3 is fixedly connected with the flange at the bottom of the connecting seat 7 through a second screw 6, the top of the connecting seat 7 is fixedly connected with an adjusting cover 9 through a third screw 8, the adjusting cover 9 is convenient for adjusting the total length of the connecting rod structure, and is adapted to the installation requirements, and the backing plate 1 and the adjusting cover 9 can rotate relatively at a certain angle, so that transfer motion can be realized; the connecting flange below the corrugated pipe 3 is fixedly connected with the backing plate 1 through a fourth screw 18; the backing plate 1 and the adjusting cover 9 are respectively used for connecting two ends of the transmission structure; the connecting seat 7, the corrugated pipe 3 and the backing plate 1 form a closed space for the spherical contact pair to work, and the ball head connecting rod, the ball tile and the contact pair lubricating oil thereof are isolated from the external atmosphere, so that the lubricating oil is prevented from polluting the external working gas, and substances such as dust and particles outside are prevented from polluting the spherical contact pair. The bellows sealed ball head connecting rod structure provided by the invention can be used as a transmission structure of oil-free plunger pumps and other equipment.
Specifically, the ball head connecting rod structure comprises a ball head connecting rod 4, wherein the ball head connecting rod 4 adopts alloy structural steel such as 38CrMoAl and the like, the ball head part is subjected to ultra-precise machining by adopting an ultra-precise machining means after surface carburization treatment, the surface roughness is less than 10nm, the outline precision is less than 0.005mm, the ball heads at the two ends of the ball head connecting rod 4 are respectively wrapped in cavities formed by corresponding ball tiles, the ball heads at the two sides of the ball head connecting rod 4 are respectively wrapped by spherical cavities synthesized by a first ball tile 10 and two hemispherical tiles 11 to form an upper spherical contact pair and a lower spherical contact pair of the connecting rod, and a first through hole is formed in the ball head connecting rod 4; the ball tile comprises a first ball tile 10 and two hemispherical tiles 11, which jointly form a spherical cavity for accommodating a ball head, wherein the first ball tile 10 and the hemispherical tiles 11 are made of materials such as brass, the surfaces of the first ball tile 10 and the hemispherical tiles 11 are subjected to ultra-precise machining on the inner surfaces by ultra-precise machining means, the surface roughness is less than 10nm, the contour precision is less than 0.005mm, one end of the first ball tile 10 is fixedly abutted to the two hemispherical tiles 11, and the other end of the first ball tile is provided with a second through hole; the ball tile positioned above is fixedly arranged in the connecting seat 7, the ball tile positioned below is fixedly arranged in the corrugated pipe 3, the bottom of the first ball tile 10 positioned below is provided with a plugging sleeve 17, an oil cup 15 is arranged in the plugging sleeve 17, the bottom of the oil cup 15 is communicated with the plugging sleeve 17 through a connecting hole, the top of the oil cup 15 is communicated with the first ball tile 10 positioned below the ball head connecting rod 4, and the plugging sleeve 17 is communicated with the inside of the corrugated pipe 3 through an oil return hole; the steel ball 16 capable of blocking the connecting hole is arranged in the oil cup 15, so that the one-way oil pumping function is realized, and the cylindrical pin 14 is arranged at the communication position of the oil cup 15 and the first ball tile 10.
A first metal sealing piece 5 is arranged between the connecting flange above the corrugated pipe 3 and the connecting seat 7, and a second metal sealing piece 19 is arranged between the connecting flange below the corrugated pipe 3 and the backing plate 1. The bottom of the ball tile positioned above is fixedly abutted with a threaded check ring 12, and the outer wall of the threaded check ring 12 is fixedly connected with the inner wall of the connecting seat 7 through threads; the ball tile positioned below is fixedly arranged in the corrugated pipe 3 through the connecting sleeve 13, and the upper part of the plugging sleeve 17 extends into the connecting sleeve 13 and is fixedly connected with the bottom of the first ball tile 10 positioned below. The second through hole is arranged at the center of the end face of the first ball tile 10, and the inner ball surface of the first ball tile 10 is provided with an oil groove structure.
When the oil pump is vertically installed and used, lubricating oil is added into the corrugated pipe 3, the lubricating oil enters the oil cup 15 through the oil return hole of the plug 17, and the steel ball 16 in the oil cup 15 plays a role of a one-way valve; under the action of the up-and-down motion of the whole body and the one-way valve of the steel ball 16, lubricating oil is pumped into the ball tile at the bottom of the ball head connecting rod, and the lubrication of the spherical contact pair is realized through an oil groove in the ball tile; meanwhile, lubricating oil in the through hole of the ball head connecting rod is pumped into a spherical contact pair at the top of the connecting rod under the action of the steel ball one-way valve, and lubrication of the spherical contact pair is realized through a spherical tile oil groove structure; the lubricating oil at the top of the connecting rod falls into the corrugated pipe 3 under the action of gravity to form a lubricating oil loop.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (4)
1. The utility model provides a sealed bulb connecting rod structure of bellows which characterized in that: the ball connecting rod structure is sleeved with a corrugated pipe, one end of the corrugated pipe is fixedly and hermetically connected with a connecting seat, the other end of the corrugated pipe is fixedly and hermetically connected with a backing plate, and the ball connecting rod structure is arranged in a sealing cavity formed by the connecting seat, the corrugated pipe and the backing plate; the ball head connecting rod structure comprises a ball head connecting rod, wherein ball heads at two ends of the ball head connecting rod are respectively wrapped in cavities formed by corresponding ball tiles, and a first through hole is formed in the ball head connecting rod; the ball tile comprises a first ball tile and two hemispherical tiles, one end of the first ball tile is fixedly abutted with the two hemispherical tiles, and the other end of the first ball tile is provided with a second through hole; the ball tile positioned above is fixedly arranged in the connecting seat, the ball tile positioned below is fixedly arranged in the corrugated pipe, a plugging sleeve is arranged at the bottom of the first ball tile positioned below, an oil cup is arranged in the plugging sleeve, the bottom of the oil cup is communicated with the plugging sleeve through a connecting hole, the top of the oil cup is communicated with the first ball tile positioned below the ball head connecting rod, and the plugging sleeve is communicated with the inside of the corrugated pipe through an oil return hole; a steel ball capable of plugging the connecting hole is arranged in the oil cup, and a cylindrical pin is arranged at the communication part of the oil cup and the first ball tile; connecting flanges are fixedly arranged at two ends of the corrugated pipe, the bottom of the plugging sleeve is fixedly connected with the connecting flange below the corrugated pipe through first screws, the connecting flange above the corrugated pipe is fixedly connected with the flange at the bottom of the connecting seat through second screws, the top of the connecting seat is fixedly connected with an adjusting cover through third screws, and the connecting flange below the corrugated pipe is fixedly connected with the backing plate through fourth screws; the backing plate and the adjusting cover are respectively used for connecting two ends of the transmission structure; the blind hole has been seted up to the backing plate upper end, first screw one end is located the blind hole of backing plate, the other end pass behind the flange of bellows below with plug housing bottom fixed connection.
2. The bellows seal ball joint connecting rod structure of claim 1, wherein: a first metal sealing element is arranged between the connecting flange above the corrugated pipe and the connecting seat, and a second metal sealing element is arranged between the connecting flange below the corrugated pipe and the backing plate.
3. The bellows seal ball joint connecting rod structure of claim 1, wherein: the bottom of the ball tile positioned above is fixedly abutted with a threaded check ring, and the outer wall of the threaded check ring is fixedly connected with the inner wall of the connecting seat through threads; the ball tile located below is fixedly arranged in the corrugated pipe through the connecting sleeve, and the upper part of the plugging sleeve stretches into the connecting sleeve and is fixedly connected with the bottom of the first ball tile located below.
4. The bellows seal ball joint connecting rod structure of claim 1, wherein: the second through hole is formed in the center of the end face of the first ball tile, and the inner ball surface of the first ball tile is provided with an oil groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111261527.6A CN113982882B (en) | 2021-10-28 | 2021-10-28 | Bulb connecting rod structure with bellows sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111261527.6A CN113982882B (en) | 2021-10-28 | 2021-10-28 | Bulb connecting rod structure with bellows sealed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113982882A CN113982882A (en) | 2022-01-28 |
| CN113982882B true CN113982882B (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111261527.6A Active CN113982882B (en) | 2021-10-28 | 2021-10-28 | Bulb connecting rod structure with bellows sealed |
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| CN (1) | CN113982882B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066520C (en) * | 1996-06-06 | 2001-05-30 | 周海威 | Straight shaft plunger mud pump |
| DE102004046676A1 (en) * | 2004-09-24 | 2006-04-20 | Zf Friedrichshafen Ag | Ball joint with sealing bellows |
| JP2009068519A (en) * | 2007-09-10 | 2009-04-02 | Honda Motor Co Ltd | Ball joint |
| JP2014211182A (en) * | 2013-04-18 | 2014-11-13 | Nok株式会社 | Dust cover for ball joint |
| US9989095B2 (en) * | 2013-11-14 | 2018-06-05 | Schaeffler Technologies AG & Co. KG | Water pump bearing with integrated mechanical seal |
| CN106969058A (en) * | 2016-06-22 | 2017-07-21 | 朱德伟 | A kind of ball pivot power transmission shaft |
| CN107939627A (en) * | 2017-12-25 | 2018-04-20 | 邵阳维克液压股份有限公司 | Plungers pump plunger and the bent axis type axial piston pump with the plunger |
| CN108468709A (en) * | 2018-05-07 | 2018-08-31 | 安徽迪尔荣机械有限公司 | A kind of automobile steering ball with long service life |
| CN109139403B (en) * | 2018-10-24 | 2023-09-26 | 本溪鹤腾科技发展有限公司 | Efficient energy-saving axial plunger type thick oil pump |
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2021
- 2021-10-28 CN CN202111261527.6A patent/CN113982882B/en active Active
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| CN113982882A (en) | 2022-01-28 |
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