CN113803541A - Telescopic welding straight-through pipe joint and hydraulic cylinder with same - Google Patents
Telescopic welding straight-through pipe joint and hydraulic cylinder with same Download PDFInfo
- Publication number
- CN113803541A CN113803541A CN202111013839.5A CN202111013839A CN113803541A CN 113803541 A CN113803541 A CN 113803541A CN 202111013839 A CN202111013839 A CN 202111013839A CN 113803541 A CN113803541 A CN 113803541A
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- China
- Prior art keywords
- pipe
- joint
- liquid
- welding
- welded
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- 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
- 238000003466 welding Methods 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 238000007789 sealing Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000005493 welding type Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 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
- 230000002265 prevention Effects 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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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
- F15B15/1428—Cylinders
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention provides a telescopic welding straight-through pipe joint, which comprises a welding joint liquid through pipe, a locking thread sleeve and a thread adapter, one end of the locking thread sleeve is provided with internal threads corresponding to the thread adapter, the other end of the locking thread sleeve is provided with an end cover, the end cover is provided with a central hole, the interior of the threaded adapter is provided with a smooth inner hole along the central shaft, an axial movement space is reserved between the inner side surface of the end cover and the end surface of the threaded adapter extending into the locking threaded sleeve, the welding joint liquid-passing pipe passes through the smooth inner hole and the central hole, the outer wall of the welding joint liquid-passing pipe is respectively attached to the inner wall of the smooth inner hole and the inner edge of the central hole, a limiting boss is arranged in the middle of the welding joint liquid flowing pipe, and the limiting boss on the welding joint liquid flowing pipe reciprocates in the axial motion space; the invention also provides a hydraulic cylinder with the telescopic welding straight-through pipe joint.
Description
Technical Field
The invention relates to an engineering hydraulic cylinder pipeline, in particular to a telescopic welding straight-through pipe joint and a hydraulic cylinder with the same.
Background
For a metallurgical oil cylinder and a part of hydraulic cylinders for engineering, the external liquid inlet and return oil path is mostly formed by welding a welding straight-through pipe joint and a connecting liquid through pipe, the lengths of the traditional welding straight-through pipe joint and the connecting liquid through pipe are fixed, the traditional welding straight-through pipe joint and the connecting liquid through pipe are influenced by length errors and welding deformation in the butt welding process, the elongation of the connecting liquid through pipe is difficult to control, the difficulty is brought to the assembly of a hydraulic circuit part of the cavity of the whole hydraulic cylinder, and the liquid leakage phenomenon is easy to generate.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a telescopic welding straight-through pipe joint which is scientific in design, simple in assembly, difficult in liquid leakage and high in practicability and a hydraulic cylinder with the pipe joint.
In order to achieve the purpose, the invention adopts the technical scheme that: a telescopic welding straight pipe joint comprises a welding joint liquid pipe, a locking thread sleeve and a thread adapter, one end of the locking thread sleeve is provided with internal threads corresponding to the thread adapter, the other end of the locking thread sleeve is provided with an end cover, the end cover is provided with a central hole, the interior of the threaded adapter is provided with a smooth inner hole along the central shaft, an axial movement space is reserved between the inner side surface of the end cover and the end surface of the threaded adapter extending into the locking threaded sleeve, the welding joint liquid-passing pipe passes through the smooth inner hole and the central hole, the outer wall of the welding joint liquid-passing pipe is respectively attached to the inner wall of the smooth inner hole and the inner edge of the central hole, the middle part of the welding joint liquid flowing pipe is provided with a limiting boss, and the limiting boss on the welding joint liquid flowing pipe does reciprocating motion in the axial motion space.
On the basis, the welding joint leads to the liquid pipe with a plurality of sealed slots have been seted up on the fitting surface outer wall of level and smooth hole, every all be provided with the sealing washer in the sealed slot.
Based on the above, the welding joint leads to the liquid pipe and stretches out the welding groove has been seted up to the one end of locking thread bush.
Based on the above, the side wall of the axial movement space is smoothly arranged.
On the basis, one end, far away from the end cover, of the threaded adapter is provided with an end face seal.
The invention also provides a hydraulic cylinder which comprises a hydraulic cylinder body, a welded hinged pipe joint communicated with the liquid through hole of the upper cavity of the hydraulic cylinder body, a valve seat communicated with the liquid through hole of the lower cavity of the hydraulic cylinder body, a connecting liquid through pipe and the telescopic welded straight through pipe joint, wherein one end of the threaded adapter, which is far away from the end cover, is installed on the valve seat, and two ends of the connecting liquid through pipe are respectively welded with the welded hinged pipe joint and the welded joint liquid through pipe.
Compared with the prior art, the hydraulic cylinder has outstanding substantive characteristics and remarkable progress, and particularly, the telescopic hydraulic cylinder realizes the telescopic of the welding joint liquid through the sliding of the welding joint liquid through pipe in a smooth inner hole of the threaded adapter and a central hole on the end cover of the locking threaded sleeve, overcomes the influences of length error and welding deformation through the adjustment of elongation, is convenient for the assembly of a hydraulic circuit part of a cavity of the whole hydraulic cylinder, and limits the telescopic of the welding joint liquid through the axial movement of a limiting boss on the welding joint liquid through pipe in the axial movement space so as to prevent the telescopic hydraulic cylinder from being separated from a matching surface; the arrangement of a plurality of sealing rings ensures that the liquid through pipe of the welding joint keeps sealed when the liquid through pipe stretches; the welding groove is convenient to butt-joint with the connecting liquid through pipe; the side wall of the axial movement space is smoothly arranged, so that the axial movement space is conveniently matched with a limit boss on the liquid through pipe of the welding joint; the end face seal is arranged, so that the sealing effect of the connecting end face of the threaded adapter is ensured; the liquid leakage prevention device has the advantages of scientific design, simplicity in assembly, difficulty in liquid leakage and high practicability.
Drawings
FIG. 1 is a schematic view of a telescopic welded straight-through pipe joint according to the present invention.
Fig. 2 is a schematic view of the assembled connection of the telescopic welded straight-through pipe joint of the present invention.
Fig. 3 is a schematic view of the structure of the hydraulic cylinder of the present invention.
In the figure: 1. a liquid pipe of the welding joint; 2. locking the threaded sleeve; 3. a threaded adapter; 4. an end cap; 5. smoothing an inner hole; 6. an axial motion space; 7. a limiting boss; 8. a seal ring; 9. welding a groove; 10. sealing the end face; 11. a welded articulated pipe joint; 12. connecting a liquid through pipe; 13. a valve seat; 14. the hydraulic cylinder body.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Example 1
As shown in fig. 1 and fig. 2, a telescopic welding straight pipe joint comprises a welding joint liquid through pipe 1, a locking thread bush 2 and a thread adapter 3, wherein one end of the locking thread bush 2 is provided with an internal thread corresponding to the thread adapter 3, the other end of the locking thread bush 1 is provided with an end cover 4, a central hole is arranged on the end cover 4, the thread adapter 3 is provided with a smooth inner hole 5 along a central shaft, an axial movement space 6 is reserved between the end cover 4 and the end surface of the thread adapter 3 close to one side of the end cover 4, one end of the welding joint liquid through pipe 1 far away from the end cover is provided with a welding groove 9 so as to be in butt welding with a connecting liquid through pipe, the welding joint liquid through pipe 1 passes through the smooth inner hole 5 and the central hole, the outer wall of the welding joint liquid through pipe 1 is respectively attached to the inner wall of the smooth inner hole 5 and the inner wall of the central hole, so as to realize the flexible of welded joint liquid pipe 1 through sliding, welded joint liquid pipe 1 middle part is provided with spacing boss 7, the lateral wall level and smooth setting in axial motion space 6, spacing boss 7 is in reciprocating motion is done in the axial motion space 6 to the flexible scope of restriction welded joint liquid pipe 1.
In order to ensure the sealing performance, a plurality of sealing grooves are formed in the outer wall of the matching surface of the welding joint liquid through pipe 1 and the smooth inner hole 5, and a sealing ring 8 is arranged in each sealing groove so as to ensure the sealing performance of the sliding matching part; the end face seal 10 is arranged at one end, far away from the end cover, of the threaded adapter 3, so that the sealing performance of the connecting end face is guaranteed.
The working principle is as follows:
firstly, determining the center distance size of the upper cavity and the lower cavity of a cylinder barrel liquid circulation loop, butting a welding type hinged pipe joint 11 and a connecting liquid circulation pipe 12 in a hydraulic loop part of a hydraulic cylinder through a welding seam, butting the connecting liquid circulation pipe 12 and a welding type connected liquid circulation pipe 1 through a welding seam, connecting the welding type connected liquid circulation pipe 1 and a valve seat 13 fixed on the hydraulic cylinder through threads, connecting the welding type hinged pipe joint 11 and the upper cavity of the hydraulic cylinder through threads, and connecting the valve seat 13 on the hydraulic cylinder with the lower cavity of the hydraulic cylinder and a hydraulic liquid inlet and outlet return system respectively to form the hydraulic loop.
Connect and lead to liquid pipe 12 and receive unloading error and welding back deformation error influence, its axial dimension shrinkage variation differs, and length size precision is more difficult to be controlled, leads to flexible of liquid pipe 1 through using welded joint, has improved the accurate nature of pneumatic cylinder hydraulic circuit spare welding assembly.
Example 2
As shown in fig. 3, a hydraulic cylinder includes a hydraulic cylinder body 14, a welded hinged pipe joint 11 communicated with a liquid through hole in an upper cavity of the hydraulic cylinder body 14, a valve seat 13 communicated with a liquid through hole in a lower cavity of the hydraulic cylinder body 14, a connecting liquid through pipe 12, and the telescopic welded through pipe joint in embodiment 1, wherein one end of the screw adapter 3 away from the end cover 4 is mounted on the valve seat 13, and two ends of the connecting liquid through pipe 11 are respectively welded to the welded hinged pipe joint 11 and the welding liquid through pipe 1; through the flexible of welded joint liquid through pipe 1, the digestible connection liquid through pipe 12 receives unloading error and welding back deformation error influence, greatly reduced assembly degree of difficulty.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. A telescopic welding straight-through pipe joint is characterized in that: including welded joint liquid pipe, locking thread bush and screw adapter, locking thread bush one end corresponds screw adapter is provided with the internal thread, the other end of locking thread bush is provided with the end cover, the centre bore has been seted up on the end cover, level and smooth hole has been seted up along the center pin to screw adapter inside, the end cover medial surface with screw adapter stretches into it is equipped with the axial motion space to leave between the terminal surface in the locking thread bush, welded joint liquid pipe passes level and smooth hole with the centre bore setting, the outer wall that welded joint liquid pipe led to the liquid respectively with level and smooth hole inner wall with the laminating of centre bore inner edge, welded joint liquid pipe middle part is provided with spacing boss, welded joint liquid pipe is expert to lead to spacing boss is in be reciprocating motion in the axial motion space.
2. The telescopic welded straight-through pipe joint of claim 1, wherein: the welding joint leads to the liquid pipe with a plurality of sealed slots have been seted up on the fitting surface outer wall of level and smooth hole, every all be provided with the sealing washer in the sealed slot.
3. The telescopic welded straight-through pipe joint of claim 2, wherein: and a welding groove is formed in one end, extending out of the locking threaded sleeve, of the welding joint liquid through pipe.
4. A telescopic welded straight-through pipe joint according to any of claims 1 to 3, characterized in that: the side walls of the axial movement space are smoothly arranged.
5. The telescopic welded straight-through pipe joint of claim 4, wherein: and one end of the threaded adapter, which is far away from the end cover, is provided with an end face seal.
6. A hydraulic cylinder, characterized by: it includes the pneumatic cylinder body, with the welded type articulated coupling of pneumatic cylinder body epicoele liquid through hole intercommunication, with the disk seat of pneumatic cylinder body cavity down liquid through hole intercommunication, connect the liquid pipe and the telescopic welding through pipe joint of any of claims 1-5, threaded adapter keeps away from the one end of end cover is installed on the disk seat, connect the both ends of liquid pipe respectively with welded type articulated coupling with welded joint liquid pipe welded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111013839.5A CN113803541A (en) | 2021-08-31 | 2021-08-31 | Telescopic welding straight-through pipe joint and hydraulic cylinder with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111013839.5A CN113803541A (en) | 2021-08-31 | 2021-08-31 | Telescopic welding straight-through pipe joint and hydraulic cylinder with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113803541A true CN113803541A (en) | 2021-12-17 |
Family
ID=78894540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111013839.5A Pending CN113803541A (en) | 2021-08-31 | 2021-08-31 | Telescopic welding straight-through pipe joint and hydraulic cylinder with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113803541A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294488A (en) * | 2021-12-30 | 2022-04-08 | 浙江启尔机电技术有限公司 | Axial length adjustable sealing joint |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776617A (en) * | 1986-02-14 | 1988-10-11 | Kabushiki Kaisha Suiken Technology | Telescopic swivel pipe joint |
| CN200999627Y (en) * | 2007-01-26 | 2008-01-02 | 淮南矿业(集团)有限责任公司 | Adjustable sleeve joint |
| CN107387905A (en) * | 2017-07-26 | 2017-11-24 | 徐州徐工液压件有限公司 | A kind of telescopic sealed attachment part for pressure fluid conduit |
| CN210830850U (en) * | 2019-08-29 | 2020-06-23 | 宝鸡市工程液压件厂 | Welded end-face sealed straight-through pipe joint |
| CN112324739A (en) * | 2020-11-18 | 2021-02-05 | 扬州斯普森机械制造有限公司 | Hydraulic robot synchronous servo control hydraulic cylinder |
-
2021
- 2021-08-31 CN CN202111013839.5A patent/CN113803541A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776617A (en) * | 1986-02-14 | 1988-10-11 | Kabushiki Kaisha Suiken Technology | Telescopic swivel pipe joint |
| CN200999627Y (en) * | 2007-01-26 | 2008-01-02 | 淮南矿业(集团)有限责任公司 | Adjustable sleeve joint |
| CN107387905A (en) * | 2017-07-26 | 2017-11-24 | 徐州徐工液压件有限公司 | A kind of telescopic sealed attachment part for pressure fluid conduit |
| CN210830850U (en) * | 2019-08-29 | 2020-06-23 | 宝鸡市工程液压件厂 | Welded end-face sealed straight-through pipe joint |
| CN112324739A (en) * | 2020-11-18 | 2021-02-05 | 扬州斯普森机械制造有限公司 | Hydraulic robot synchronous servo control hydraulic cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294488A (en) * | 2021-12-30 | 2022-04-08 | 浙江启尔机电技术有限公司 | Axial length adjustable sealing joint |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211217 |