CN112412923A - Flange type connecting vertical hydraulic cylinder with embedded guide sleeve - Google Patents
Flange type connecting vertical hydraulic cylinder with embedded guide sleeve Download PDFInfo
- Publication number
- CN112412923A CN112412923A CN202011360897.0A CN202011360897A CN112412923A CN 112412923 A CN112412923 A CN 112412923A CN 202011360897 A CN202011360897 A CN 202011360897A CN 112412923 A CN112412923 A CN 112412923A
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- China
- Prior art keywords
- cylinder
- cylinder barrel
- flange
- guide sleeve
- left end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction 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
- F15B15/1423—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
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
- F15B15/1442—End cap sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- 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
- F15B15/1471—Guiding means other than in the end cap
Abstract
The invention discloses a flange-type connecting vertical hydraulic cylinder with an embedded guide sleeve, and belongs to the technical field of hydraulic cylinders. The piston rod, the piston, the gland, the cylinder I and the cylinder II are included; the right end of the cylinder barrel I is provided with an inner spigot, and a flange I is fixed on the circumferential surface of the right end of the cylinder barrel I; the left end of the cylinder barrel II is provided with an inner spigot, and the circumferential surface of the left end of the cylinder barrel II is fixed with a flange II; the left end of the cylinder barrel II is butted with the right end of the cylinder barrel I, and the flange I and the flange II are fastened into a whole through bolts and nuts; the outer circumference of the guide sleeve is embedded at an inner seam allowance between the cylinder barrel II and the cylinder barrel I. The invention adopts the built-in guide sleeve and the double-dust-proof structure, so that the dustproof and waterproof effect is better, and the corrosion problem is reduced; the circular flange plates are connected, so that the stress is stable, and the disassembly and the assembly are convenient; the circular flange plate is detached from the nut and is directly connected with the host, so that the maintainability of the vertical oil cylinder is greatly improved, the cylinder barrel II can bear part of side load, the stress concentration of the guide sleeve part is reduced, and the stability of a sealing system is enhanced.
Description
Technical Field
The invention relates to the technical field of hydraulic cylinders, in particular to a flange-type connecting vertical hydraulic cylinder with an embedded guide sleeve.
Background
The vertical oil cylinders used by the automobile crane and the all-terrain crane bear the role of supporting the whole automobile to work off the ground and realizing the task of accurate hoisting, and all the hoisted weight is finally decomposed into the stress of four vertical oil cylinders, so the bearing capacity is large; the vertical oil cylinder needs to be in contact with the ground for working for a long time, and is greatly influenced by working environment, for example, a piston rod and a guide sleeve which are not specially processed are easy to rust in coastal areas, so that normal use is influenced; meanwhile, when the crane works, the stress of the vertical oil cylinder is not only along the Z axis, and when a heavy object is hoisted to rotate or stop, a side load force is formed on the vertical oil cylinder, and the performance of the vertical oil cylinder is not examined at all times due to a larger side load force.
According to recent years, vertical oil cylinder market feedback is gathered, the problem of a guide sleeve end is particularly outstanding, the thread strength is insufficient, the thread is corroded, the problems of dust failure and the like occur occasionally, a few problems are eliminated, the rest most of problems are related to the actual use working condition of the oil cylinder and the use habit of a user due to early design reasons. The current market competition is not the pure function competition, the early price competition, but the product reliability competition. The current design needs to have certain allowance, and the fully-calculated design mode can be easily seen in the later period of the service life of the product.
At present, the perpendicular hydro-cylinder of the overwhelming majority, uide bushing are all put in the one side that is close to the piston rod bulb, and the efficiency is all being influenced in the locking of helicitic texture and assembly to if on-the-spot hydro-cylinder goes out the problem, the service personnel dismantle troublesome, if meet the condition that the screw thread burns out, will very big influence maintenance.
For example, the engineering machine and the vertical oil cylinder (CN 203430898U) thereof disclosed in the chinese patent fix the guide sleeve in the middle by connecting two cylinder barrels through threads, and weld the flange on the cylinder barrel II far away from the guide sleeve, thereby reducing the stress on the guide sleeve. Meanwhile, a section of support sleeve is welded on the piston rod, and the influence of side load on the vertical reciprocating motion of the vertical oil cylinder is resisted by a mechanical structure.
The defects of the technology are as follows:
1. the flange is welded on the cylinder barrel II far away from the guide sleeve, the stress state of the vertical oil cylinder can be optimized on a certain basis, the service life of the oil cylinder is prolonged, but the length of the cylinder barrel II is larger than the stroke, so that the total length is limited, and the scheme is difficult to popularize;
2. the procedures of the piston rod and the cylinder barrel are complicated, and the material cost is high;
3. the guide sleeve is connected with the two ends through threads, so that the disassembly and the assembly are inconvenient, and the efficiency is not high.
Disclosure of Invention
The invention provides a flange-type connecting vertical hydraulic cylinder with an embedded guide sleeve, which aims to meet the development trend of vertical oil cylinders of medium and small-tonnage truck cranes and all-terrain cranes, realize the improvement of the reliability and maintainability level of the whole machine, and solve the problems of rust of the guide sleeve, inconvenient screw thread disassembly and the like of the vertical oil cylinder fed back in the market.
The invention is realized by the following technical scheme: a flange-type connecting vertical hydraulic cylinder with an embedded guide sleeve comprises a piston rod, a piston, a gland, a cylinder barrel I and a cylinder barrel II; the right end of the cylinder barrel I is provided with an inner spigot, and a flange I is fixed on the circumferential surface of the right end of the cylinder barrel I; the left end of the cylinder barrel II is provided with an inner spigot, and the circumferential surface of the left end of the cylinder barrel II is fixed with a flange II; the left end of the cylinder barrel II is butted with the right end of the cylinder barrel I, and the flange I and the flange II are fastened into a whole through bolts and nuts; the outer circumference of the guide sleeve is embedded at an inner seam allowance between the cylinder barrel II and the cylinder barrel I.
It further comprises the following steps: after the nut is removed by the vertical hydraulic cylinder, the vertical hydraulic cylinder is connected with a main machine square cavity of the crane through a bolt.
The flange I and the flange II are fastened into a whole through eight groups of uniformly distributed bolts and nuts.
And the guide sleeve and the press cover are respectively provided with a dustproof ring.
Compared with the prior art, the invention has the beneficial effects that:
1. due to the built-in guide sleeve and the double dust-proof structure, the dustproof and waterproof effects are better, and the corrosion problem is reduced;
2. the circular flange plates are connected, so that the stress is stable, and the disassembly and the assembly are convenient; inside flange joint fixed the guide sleeve to the cylinder, the circular ring flange demolishs nut and host computer lug connection, greatly promoted the maintainability of perpendicular hydro-cylinder.
3. The two cylinders are connected without threads, so that the processing is convenient, the assembly efficiency is high, the connection strength of a circle of bolts is high, and the stress is uniform;
4. a part of the total length is abandoned to be used as the distance of the spacer bush of the vertical oil cylinder, the cylinder barrel II can share a part of side load, the stress concentration of the guide sleeve part is reduced, and the stability of the sealing system is enhanced; the mounting distance is adjusted and the cylinder stress is optimized through the cylinder barrel II.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of the present invention;
in the figure: 1-cylinder I, 2-piston, 3-piston rod, 4-guide sleeve, 5-nut, 6-bolt, 7-cylinder II, 8-gland, 9-flange I, 10-flange II.
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.
As shown in figures 1 and 2, the flange-type connecting vertical hydraulic cylinder with the embedded guide sleeve is characterized in that the right end of a cylinder barrel I1 is provided with an inner spigot, and the circumferential surface of the right end of a cylinder barrel I1 is fixed with a flange I9; the left end of the cylinder II7 is provided with an inner spigot, and the circumferential surface of the left end of the cylinder II7 is fixed with a flange II 10. The left end of the cylinder barrel II7 is butted with the right end of the cylinder barrel I1, and the flange I9 and the flange II10 are fastened into a whole through eight groups of evenly distributed bolts 6 and nuts 5; the outer circumference of the guide sleeve 4 is embedded at an inner stop between the cylinder II7 and the cylinder I1.
When the vertical hydraulic cylinder is assembled and tested to the host site, the nut 5 is removed and is connected with the host square cavity of the crane through the bolt 6, so that the maintainability of the vertical oil cylinder is greatly improved. In the embodiment, a part of the total length is abandoned to be used as the distance of the vertical oil cylinder spacer bush, the cylinder barrel II can share a part of side load, the stress concentration of the guide sleeve part is reduced, and the stability of the sealing system is enhanced; the mounting distance is adjusted and the cylinder stress is optimized through the cylinder barrel II.
Gland 8 is installed at cylinder II7 right-hand member, and piston rod 3 passes uide bushing 4, gland 8, and piston 2 is installed to piston rod 3 inner. A dustproof ring is respectively installed on the guide sleeve 4 and the gland 8, the built-in guide sleeve is not in direct contact with the outside, a double-dustproof structure is adopted, two dustproof structures can be different as required, different models are selected, the dustproof and waterproof effects are better, and the corrosion problem is reduced.
When the piston rod and the vertical direction form a certain included angle, the gland part is firstly stressed to play a certain supporting role, and the condition of the sealing ring cannot be influenced by a small amount of deformation of the cylinder barrel II. The size of the included angle is reduced along with the rise of the height, and the force decomposed on the guide sleeve part is much smaller than that of a vertical oil cylinder arranged at the end part of the guide sleeve, so that the sealing stability of the guide sleeve part is ensured.
This embodiment utilizes several groups of bolt and nuts of equipartition to imbed the uide bushing inside the hydro-cylinder, and the dustproof waterproof ability of hydro-cylinder can be strengthened to built-in uide bushing and two dustproof structures, and the mode of two cylinder barrels and uide bushing gland separation improves the anti side capacity of hydro-cylinder, and the flange formula is connected the reliability and the maintainability of also effectual promotion product simultaneously. The vertical oil cylinder can effectively solve the problems of weak side load resistance and inconvenient maintenance of the vertical oil cylinder of the medium and small-tonnage crane.
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 (4)
1. The utility model provides a perpendicular pneumatic cylinder is connected to embedding uide bushing flange formula, includes piston rod (3), piston (2) and gland (8), its characterized in that: the cylinder barrel I (1) and the cylinder barrel II (7) are also included; the right end of the cylinder barrel I (1) is provided with an inner spigot, and a flange I (9) is fixed on the circumferential surface of the right end of the cylinder barrel I (1); the left end of the cylinder barrel II (7) is provided with an inner spigot, and the circumferential surface of the left end of the cylinder barrel II (7) is fixed with a flange II (10); the left end of the cylinder barrel II (7) is butted with the right end of the cylinder barrel I (1), and the flange I (9) and the flange II (10) are fastened into a whole through a bolt (6) and a nut (5); the outer circumferential surface of the guide sleeve (4) is embedded at an inner stop between the cylinder II (7) and the cylinder I (1).
2. The flanged-connection vertical hydraulic cylinder with an embedded guide sleeve according to claim 1, wherein: after the nut (5) is removed, the vertical hydraulic cylinder is connected with a main machine square cavity of the crane through a bolt (6).
3. The flanged-connection vertical hydraulic cylinder with an embedded guide sleeve according to claim 1, wherein: the flange I (9) and the flange II (10) are fastened into a whole through eight groups of uniformly distributed bolts (6) and nuts (5).
4. The flanged-connection vertical hydraulic cylinder with an embedded guide sleeve according to claim 1, wherein: and the guide sleeve (4) and the gland (8) are respectively provided with a dustproof ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011360897.0A CN112412923A (en) | 2020-11-27 | 2020-11-27 | Flange type connecting vertical hydraulic cylinder with embedded guide sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011360897.0A CN112412923A (en) | 2020-11-27 | 2020-11-27 | Flange type connecting vertical hydraulic cylinder with embedded guide sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112412923A true CN112412923A (en) | 2021-02-26 |
Family
ID=74843358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011360897.0A Pending CN112412923A (en) | 2020-11-27 | 2020-11-27 | Flange type connecting vertical hydraulic cylinder with embedded guide sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112412923A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392842A (en) * | 2011-10-27 | 2012-03-28 | 中联重科股份有限公司 | Crushing machine, hydraulic control system and hydraulic cylinder |
| CN202412637U (en) * | 2011-12-29 | 2012-09-05 | 浙江申达机器制造股份有限公司 | Large-scale anti-rotation clamping cylinder device |
| CN202646219U (en) * | 2012-05-18 | 2013-01-02 | 抚顺天宝重工液压制造有限公司 | Long-stroke hydraulic cylinder |
| CN103362893A (en) * | 2013-07-31 | 2013-10-23 | 徐州重型机械有限公司 | Engineering machinery and vertical oil cylinder of engineering machinery |
| CN103711744A (en) * | 2013-12-31 | 2014-04-09 | 一重集团大连设计研究院有限公司 | Horizontal split-structure large-stroke plunger cylinder |
| CN204454364U (en) * | 2015-03-17 | 2015-07-08 | 温州瓯科科技有限公司 | A kind of hoisting crane support hydraulic ram |
| CN106321561A (en) * | 2015-06-23 | 2017-01-11 | 张家港市金桥轻工机械有限公司 | Sealing structure of hydraulic cylinder cover |
| CN206268166U (en) * | 2016-11-14 | 2017-06-20 | 福建省金牛机械发展有限公司 | A kind of engineering machinery oil hydraulic cylinder |
| CN107524648A (en) * | 2017-08-09 | 2017-12-29 | 太原科技大学 | A kind of closed type energy-saving loop of excavator swing arm |
| CN208381022U (en) * | 2018-06-14 | 2019-01-15 | 常州市莱赫润机械有限公司 | Single rod hydraulic cylinder assembly |
| CN211231105U (en) * | 2019-12-27 | 2020-08-11 | 三和油缸(常州)有限公司 | One-time forming oil cylinder for die casting |
-
2020
- 2020-11-27 CN CN202011360897.0A patent/CN112412923A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392842A (en) * | 2011-10-27 | 2012-03-28 | 中联重科股份有限公司 | Crushing machine, hydraulic control system and hydraulic cylinder |
| CN202412637U (en) * | 2011-12-29 | 2012-09-05 | 浙江申达机器制造股份有限公司 | Large-scale anti-rotation clamping cylinder device |
| CN202646219U (en) * | 2012-05-18 | 2013-01-02 | 抚顺天宝重工液压制造有限公司 | Long-stroke hydraulic cylinder |
| CN103362893A (en) * | 2013-07-31 | 2013-10-23 | 徐州重型机械有限公司 | Engineering machinery and vertical oil cylinder of engineering machinery |
| CN103711744A (en) * | 2013-12-31 | 2014-04-09 | 一重集团大连设计研究院有限公司 | Horizontal split-structure large-stroke plunger cylinder |
| CN204454364U (en) * | 2015-03-17 | 2015-07-08 | 温州瓯科科技有限公司 | A kind of hoisting crane support hydraulic ram |
| CN106321561A (en) * | 2015-06-23 | 2017-01-11 | 张家港市金桥轻工机械有限公司 | Sealing structure of hydraulic cylinder cover |
| CN206268166U (en) * | 2016-11-14 | 2017-06-20 | 福建省金牛机械发展有限公司 | A kind of engineering machinery oil hydraulic cylinder |
| CN107524648A (en) * | 2017-08-09 | 2017-12-29 | 太原科技大学 | A kind of closed type energy-saving loop of excavator swing arm |
| CN208381022U (en) * | 2018-06-14 | 2019-01-15 | 常州市莱赫润机械有限公司 | Single rod hydraulic cylinder assembly |
| CN211231105U (en) * | 2019-12-27 | 2020-08-11 | 三和油缸(常州)有限公司 | One-time forming oil cylinder for die casting |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20210226 |