CN108457977B - Connecting structure of pull rod shaft and rotary joint - Google Patents
Connecting structure of pull rod shaft and rotary joint Download PDFInfo
- Publication number
- CN108457977B CN108457977B CN201810155383.8A CN201810155383A CN108457977B CN 108457977 B CN108457977 B CN 108457977B CN 201810155383 A CN201810155383 A CN 201810155383A CN 108457977 B CN108457977 B CN 108457977B
- Authority
- CN
- China
- Prior art keywords
- pull rod
- shaft
- rotary joint
- rod shaft
- cavity
- 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.)
- Active
Links
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram 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
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a connecting structure of a pull rod shaft and a rotary joint, which comprises the following components: pull rod shaft and rotary joint, wherein: the first end of the pull rod shaft is provided with an axially extending connecting hole, and the inner circumferential surface of the connecting hole is provided with an internal thread; the rotary joint is provided with a switching shaft which is rotationally connected with the rotary joint, and one end of the switching shaft, which is far away from the rotary joint, stretches into the connecting hole and is in threaded fit with the connecting hole so as to realize connection with the pull rod shaft. According to the invention, the connecting hole is formed in the first end of the pull rod shaft, the internal thread is arranged in the connecting hole, the switching shaft is arranged on the rotary joint, one end of the switching shaft is rotationally connected with the rotary joint, and the other end of the switching shaft extends into the connecting hole and is in threaded fit with the connecting hole, so that the connection between the pull rod shaft and the rotary joint is realized, and the rotary shaft only needs to be screwed out from the pull rod shaft during disassembly. Therefore, the arrangement of the connecting structure solves the problem that the pull rod shaft and the rotary joint are inconvenient to assemble and disassemble in the separator very conveniently.
Description
Technical Field
The invention relates to the technical field of separators, in particular to a connecting structure of a pull rod shaft and a rotary joint.
Background
The pull rod shaft is an important component part of the separator, one end of the pull rod shaft is used for being connected with a lifting cover of the separator, and the other end of the pull rod shaft is connected with a rotary joint. In the prior art, the connecting mode of the pull rod shaft and the rotary joint is that the pull rod shaft is directly inserted into the rotary joint and is connected with the rotary joint. The pull rod shaft or the rotary joint is required to follow a certain sequence in the process of installation or disassembly, and is limited by the internal space of the separator, the sequential disassembly and assembly are very inconvenient, the matching surface of the bearing inside the pull rod shaft and the rotary joint is damaged due to repeated disassembly, and the bearing runs out of the inner circle, so that the rotary joint is damaged.
Disclosure of Invention
Based on the technical problems in the prior art, the invention provides a connecting structure of a pull rod shaft and a rotary joint.
The invention provides a connecting structure of a pull rod shaft and a rotary joint, which comprises the following components: pull rod shaft and rotary joint, wherein:
the first end of the pull rod shaft is provided with an axially extending connecting hole, and the inner circumferential surface of the connecting hole is provided with an internal thread;
The rotary joint is provided with a switching shaft which is rotationally connected with the rotary joint, and one end of the switching shaft, which is far away from the rotary joint, stretches into the connecting hole and is in threaded fit with the connecting hole so as to realize connection with the pull rod shaft.
Preferably, a limiting block fixed with the switching shaft is arranged on the periphery of the switching shaft and between the two ends of the switching shaft, and when the switching shaft is connected with the pull rod shaft, the limiting block abuts against the end face of the first end of the pull rod shaft.
Preferably, the connection hole comprises a first bore and a second bore coaxially arranged; the first hole cavity and the second hole cavity are sequentially arranged from the first end of the pull rod shaft to the second end of the pull rod shaft, the inner diameter of the first hole cavity is larger than that of the second hole cavity so as to form a first limit step at the joint of the first hole cavity and the second hole cavity, and the inner circumferential surface of the second hole cavity is provided with internal threads.
Preferably, the adapter shaft comprises a main body part and a threaded part which is positioned at one end of the main body part and is integrally formed with the main body part; one end of the main body part far away from the thread part is connected with the rotary joint; the threaded part and the main body part are coaxially arranged, an external thread is arranged on the outer surface of the threaded part, the outer diameter of the threaded part is smaller than that of the main body part to form a second limiting step therebetween, when the switching shaft is connected with the pull rod shaft, one end, close to the threaded part, of the main body part stretches into the first hole cavity and is in clearance fit with the first hole cavity, the threaded part is positioned in the second hole cavity and is in threaded fit with the second hole cavity, and the second limiting step abuts against the first limiting step.
Preferably, the rotary joint comprises an outer shell and a bearing arranged in the outer shell, and one end of the adapter shaft extends into the bearing and is fixed with an inner ring of the bearing.
According to the invention, the connecting hole is formed in the first end of the pull rod shaft, the internal thread is arranged in the connecting hole, the switching shaft is arranged on the rotary joint, one end of the switching shaft is rotationally connected with the rotary joint, and the other end of the switching shaft extends into the connecting hole and is in threaded fit with the connecting hole, so that the connection between the pull rod shaft and the rotary joint is realized, and the rotary shaft only needs to be screwed out from the pull rod shaft during disassembly. Therefore, the arrangement of the connecting structure solves the problem that the pull rod shaft and the rotary joint are inconvenient to assemble and disassemble in the separator very conveniently.
Drawings
Fig. 1 is a schematic structural diagram of a connecting structure of a pull rod shaft and a rotary joint according to the present invention.
Detailed Description
The technical scheme of the invention is described in detail through specific embodiments.
Fig. 1 is a schematic structural view of a connecting structure of a pull rod shaft and a rotary joint according to the present invention.
Referring to fig. 1, a connecting structure of a pull rod shaft and a rotary joint according to an embodiment of the present invention includes: a pull rod shaft 1, a rotary joint 2 and a transfer shaft 3, wherein: the first end of the pull rod shaft 1 is provided with an axially extending connecting hole, and the inner circumferential surface of the connecting hole is provided with internal threads. The rotary joint 2 includes an outer housing 21 and a bearing 22 mounted inside the outer housing 21.
One end of the adapter shaft 3 extends into the bearing 22 and is fixed with the inner ring of the bearing 22, and one end of the adapter shaft 3, which is far away from the rotary joint 2, extends into the connecting hole and is in threaded fit with the connecting hole so as to realize connection with the pull rod shaft 1.
The invention utilizes the transfer shaft 3 to realize the connection of the pull rod shaft 1 and the rotary joint 2, and only the transfer shaft 3 is required to be screwed in or screwed out from the pull rod shaft 1 during the installation and the disassembly, so that the pull rod shaft 1 can be installed firstly or the rotary joint 2 can be installed firstly when the pull rod shaft 1 and the rotary joint 2 are installed, the sequential disassembly is not required, and the internal space structure of the separator can be utilized for freely selecting the disassembly sequence.
As can be seen from the above, according to the invention, the connecting hole is formed at the first end of the pull rod shaft 1, the internal thread is formed in the connecting hole, the adapter shaft 3 is arranged on the rotary joint 2, one end of the adapter shaft 3 is rotatably connected with the rotary joint 2, and the other end of the adapter shaft extends into the connecting hole and is in threaded fit with the connecting hole, so that the connection between the pull rod shaft 1 and the rotary joint 2 is realized, and when the pull rod shaft is disassembled, the rotary shaft 3 is only required to be screwed out from the pull rod shaft 1. Therefore, the arrangement of the connecting structure solves the problem that the pull rod shaft 1 and the rotary joint 2 are inconvenient to assemble and disassemble in the separator very conveniently.
In addition, in this embodiment, a limiting block 4 fixed to the outer periphery of the adapter shaft 3 is disposed between two ends of the adapter shaft 3, and when the adapter shaft 3 is connected to the pull rod shaft 1, the limiting block 4 abuts against an end surface of the first end of the pull rod shaft 1, so that the adapter shaft 3 and the connection hole are assembled in place by using the limiting block 4.
In this embodiment, the connection hole includes a first hole cavity and a second hole cavity coaxially arranged; the first and second cavities are arranged in sequence from the first end of the pull rod shaft 1 to the second end of the pull rod shaft, the inner diameter of the first cavity is larger than that of the second cavity so as to form a first limit step at the joint of the first cavity and the second cavity, and the inner circumferential surface of the second cavity is provided with internal threads. The adapter shaft 3 comprises a main body 31 and a screw part 32 which is positioned at one end of the main body 31 and is integrally formed with the main body 31; one end of the main body 31 away from the screw portion 32 is connected to the rotary joint 2; the threaded portion 32 is coaxially arranged with the main body portion 31, an external thread is arranged on the outer surface of the threaded portion 32, the outer diameter of the threaded portion 32 is smaller than that of the main body portion 31 to form a second limiting step therebetween, when the adapter shaft 3 is connected with the pull rod shaft 1, one end, close to the threaded portion 32, of the main body portion 31 extends into the first cavity and is in clearance fit with the first cavity, the threaded portion 32 is located in the second cavity and is in threaded fit with the second cavity, and the second limiting step abuts against the first limiting step. The arrangement of the structure can ensure that the adapter shaft 3 and the connecting hole are assembled in place, and the stability and the reliability of the coordination of the adapter shaft 3 and the pull rod shaft 1 are improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. A connecting structure of a pull rod shaft and a rotary joint, characterized by comprising: a pull rod shaft (1) and a rotary joint (2), wherein:
the first end of the pull rod shaft (1) is provided with an axially extending connecting hole, and the inner circumferential surface of the connecting hole is provided with an internal thread;
The rotary joint (2) is provided with a switching shaft (3) which is rotationally connected with the rotary joint, and one end of the switching shaft (3) far away from the rotary joint (2) stretches into the connecting hole and is in threaded fit with the connecting hole so as to realize the connection with the pull rod shaft (1);
a limiting block (4) fixed with the switching shaft (3) is arranged on the periphery of the switching shaft (3) and between two ends of the switching shaft (3), and when the switching shaft (3) is connected with the pull rod shaft (1), the limiting block (4) is abutted against the end face of the first end of the pull rod shaft (1);
the connecting hole comprises a first hole cavity and a second hole cavity which are coaxially arranged; the first hole cavity and the second hole cavity are sequentially arranged from the first end of the pull rod shaft (1) to the second end of the pull rod shaft, the inner diameter of the first hole cavity is larger than that of the second hole cavity so as to form a first limit step at the joint of the first hole cavity and the second hole cavity, and the inner circumferential surface of the second hole cavity is provided with an internal thread;
the adapter shaft (3) comprises a main body part (31) and a threaded part (32) which is positioned at one end of the main body part (31) and is integrally formed with the main body part (31); one end of the main body part (31) far away from the thread part (32) is connected with the rotary joint (2); the threaded part (32) and the main body part (31) are coaxially arranged, external threads are arranged on the outer surface of the threaded part (32), the outer diameter of the threaded part (32) is smaller than that of the main body part (31) to form a second limiting step therebetween, when the adapter shaft (3) is connected with the pull rod shaft (1), one end, close to the threaded part (32), of the main body part (31) stretches into the first cavity and is in clearance fit with the first cavity, the threaded part (32) is positioned in the second cavity and is in threaded fit with the second cavity, and the second limiting step is abutted against the first limiting step;
the second end of the pull rod shaft (1) is used for being connected with a lifting cover of the separator.
2. The connection structure of the pull rod shaft and the rotary joint according to claim 1, wherein the rotary joint (2) comprises an outer housing (21) and a bearing (22) mounted inside the outer housing (21), and one end of the adapter shaft (3) extends into the bearing (22) and is fixed with an inner ring of the bearing (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155383.8A CN108457977B (en) | 2018-02-23 | 2018-02-23 | Connecting structure of pull rod shaft and rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155383.8A CN108457977B (en) | 2018-02-23 | 2018-02-23 | Connecting structure of pull rod shaft and rotary joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108457977A CN108457977A (en) | 2018-08-28 |
| CN108457977B true CN108457977B (en) | 2024-08-06 |
Family
ID=63217112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810155383.8A Active CN108457977B (en) | 2018-02-23 | 2018-02-23 | Connecting structure of pull rod shaft and rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457977B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921565A (en) * | 2012-11-01 | 2013-02-13 | 江苏捷达离心机制造有限公司 | Bag pulling device of bag pulling centrifuge |
| CN104074472A (en) * | 2014-07-22 | 2014-10-01 | 江苏和信石油机械有限公司 | Ultra torsion resistance multi-shoulder full-enclosed taper pipe thread connecting device |
| CN207961245U (en) * | 2018-02-23 | 2018-10-12 | 安徽普源分离机械制造有限公司 | A kind of connection structure of pull rod shaft and rotary joint |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5533064Y2 (en) * | 1976-11-17 | 1980-08-06 | ||
| JP5853994B2 (en) * | 2013-05-30 | 2016-02-09 | 株式会社豊田自動織機 | Comb |
| CN205577874U (en) * | 2016-02-25 | 2016-09-14 | 中国石油化工股份有限公司 | A connection structure for liner hanger sends into nipple joint |
-
2018
- 2018-02-23 CN CN201810155383.8A patent/CN108457977B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921565A (en) * | 2012-11-01 | 2013-02-13 | 江苏捷达离心机制造有限公司 | Bag pulling device of bag pulling centrifuge |
| CN104074472A (en) * | 2014-07-22 | 2014-10-01 | 江苏和信石油机械有限公司 | Ultra torsion resistance multi-shoulder full-enclosed taper pipe thread connecting device |
| CN207961245U (en) * | 2018-02-23 | 2018-10-12 | 安徽普源分离机械制造有限公司 | A kind of connection structure of pull rod shaft and rotary joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108457977A (en) | 2018-08-28 |
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