CN115388083A - Connecting rod device - Google Patents
Connecting rod device Download PDFInfo
- Publication number
- CN115388083A CN115388083A CN202110571705.9A CN202110571705A CN115388083A CN 115388083 A CN115388083 A CN 115388083A CN 202110571705 A CN202110571705 A CN 202110571705A CN 115388083 A CN115388083 A CN 115388083A
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- CN
- China
- Prior art keywords
- rotation pin
- end portion
- tip
- threaded end
- internal thread
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/06—Adjustable connecting-rods
-
- 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
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
Abstract
The invention provides a connecting rod device, which can ensure that the relative angle of two ends of the connecting rod device meets the assembly requirement. The connecting rod device comprises a sleeve, a first end portion, a second end portion and an anti-rotation pin, wherein a first internal thread and a second internal thread are respectively arranged on two sides of the sleeve, the first end portion and the second end portion are respectively connected to the first internal thread and the second internal thread through a first threaded end and a second threaded end, two ends of the anti-rotation pin are respectively connected with the middle portions of the first threaded end and the second threaded end, the anti-rotation pin allows axial movement between the first end portion and the second end portion, and limits relative rotation between the first end portion and the second end portion.
Description
Technical Field
The invention relates to the technical field of transmission mechanisms, in particular to a connecting rod device.
Background
The link device is an important part of the movement of the driving assembly, and is widely applied to various adjusting mechanisms of an aircraft engine, such as an adjustable stator blade, an adjustable air bleed valve and the like. The linkage typically includes end portions at each end that are threadably connected to the sleeve and a sleeve intermediate the end portions that are provided with a knuckle bearing or other connection structure for connecting the linkage to other components. To accommodate different positions of use, the knuckle bearings or other connection structures at the two ends of the linkage may need to ensure a certain relative angle, such as parallel or perpendicular.
In the assembly process of the connecting rod device, because the two end parts respectively rotate relative to the middle sleeve, the knuckle bearings or other connecting structures at the two ends of the connecting rod device are difficult to accurately ensure to be at the relative angle required by assembly, in addition, locking nuts are required to be adopted for locking after the connecting rod device is assembled, and the relative angles at the two ends are also caused to change in the locking process.
Disclosure of Invention
The invention aims to provide a connecting rod device, which can ensure that the relative angle of two ends of the connecting rod device meets the assembly requirement.
In order to realize the link means of purpose, including sleeve, first end, second end and anti-rotating pin, the both sides of sleeve are provided with first internal thread and second internal thread respectively, first end with the second end is connected to through first screwed end and second screwed end respectively first internal thread with the second internal thread, the both ends of anti-rotating pin respectively with first screwed end with the middle part of second screwed end is connected, the anti-rotating pin allowwed take place axial displacement between first end and the second end to the restriction relative rotation between first end and the second end.
In one or more embodiments of the link device, the first and second threaded ends are respectively provided with a groove recessed in an axial direction, and both ends of the anti-rotation pin are respectively inserted into the grooves of the first and second threaded ends so as to be axially movable.
In one or more embodiments of the link device, one of the first and second threaded ends is fixedly connected to one end of the anti-rotation pin, and the other of the first and second threaded ends is provided with a groove recessed in an axial direction, into which the other end of the anti-rotation pin is axially movably inserted.
In one or more embodiments of the linkage arrangement, the recess includes a non-cylindrical inner surface for engaging at least a portion of an outer surface of the anti-rotation pin to prevent rotation.
In one or more embodiments of the link device, the cross section of the groove is a regular polygon, and the center of the regular polygon is located on the axis of the link device.
In one or more embodiments of the link device, the anti-rotation pin has a cross section of a regular polygon, and the center of the regular polygon is located on the axis of the link device.
In one or more embodiments of the linkage arrangement, the first and second internal threads have opposite hand and the same pitch.
In one or more embodiments of the link device, the first end portion or/and the second end portion is formed by machining a rod end joint bearing.
In one or more embodiments of the link device, the link device further includes two locking nuts for locking the first end portion and the second end portion, respectively.
In one or more embodiments of the link device, the sleeve is provided with a clamping portion on an outer surface thereof for clamping a tightening tool.
This connecting rod device is through adopting the rotation prevention pin connection first end and second end, makes only can take place axial displacement and can not take place relative rotation between first end and the second end to can play the effect of centering, thereby guarantee at connecting rod device's assembly or length adjustment in-process, the relative angle between first end and the second end satisfies the assembly requirement, improves assembly efficiency and assembly quality. The connecting rod device is simple in structure, reliable in connection and easy to machine, manufacture and assemble.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a schematic perspective view of a linkage arrangement according to one or more embodiments.
FIG. 2 is an exploded schematic view of a linkage arrangement according to one or more embodiments.
FIG. 3 is a partially cut-away schematic illustration of the linkage arrangement of FIG. 2 in a collapsed state.
FIG. 4 is a partially cross-sectional schematic view of the linkage arrangement of FIG. 2 in an extended state.
Fig. 5 is a schematic illustration of an end according to one or more embodiments.
Fig. 6 is a schematic view of a sleeve according to one or more embodiments.
FIG. 7 is a cross-sectional view of a groove and an anti-rotation pin according to one embodiment.
FIG. 8 is a cross-sectional view of a groove and an anti-rotation pin according to another embodiment.
Detailed Description
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the disclosure, but these are by way of example only and are not limiting as to the scope of the invention. It is to be noted that the drawings are designed solely as examples and are not to scale and should not be construed as limiting the scope of the invention as it may be practiced. It should be noted that two or more references to "one embodiment" or "some embodiments" in various places in the specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.
A link device 100 according to one or more embodiments of the present invention, as shown in fig. 1 to 6, includes a first end portion 1, a second end portion 2, a sleeve 3, and an anti-rotation pin 4.
Both sides of the sleeve 3 are respectively provided with a first internal thread 31 and a second internal thread 32, the first end portion 1 is connected to the first internal thread 31 through the first threaded end 11, and the second end portion 2 is connected to the second internal thread 32 through the second threaded end 21, so that the first end portion 1 and the second end portion 2 are mounted to the sleeve 3, and the length of the link device 100 can be adjusted by adjusting the length of the threaded connection between the sleeve 3 and the first end portion 1 and the second end portion 2.
The anti-rotation pin 4 is connected at two ends thereof to the middle of the first threaded end 11 and the middle of the second threaded end 21, respectively, and the anti-rotation pin 4 allows axial movement between the first end portion 1 and the second end portion 2, but prevents relative rotation between the first end portion 1 and the second end portion 2, as will be described in detail later, so that in the process of mounting the first end portion 1 and the second end portion 2 to the sleeve 3, it can be ensured that the relative angle between the first end portion 1 and the second end portion 2 meets the assembly requirements, and in addition, the anti-rotation pin 4 can also play a role in centering the first end portion 1 and the second end portion 2, so as to assemble the link device 100, and improve the assembly quality and the assembly efficiency.
In the description of the present invention, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for the convenience of distinguishing the corresponding components, and if not otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
Referring to fig. 2, in one embodiment, the first end surface 111 of the first threaded end 11 and the second end surface 211 of the second threaded end 21 are respectively provided with a groove 5 recessed along the axial direction, the grooves 5 are respectively arranged at the central portions of the first end surface 111 and the second end surface 211, two ends of the anti-rotation pin 4 are respectively inserted into the grooves 5 of the first threaded end 11 and the second threaded end 21 in an axially movable manner, so that the first end portion 1 and the second end portion 2 are connected in an axially movable manner through the anti-rotation pin 4 without affecting the threaded connection between the first end portion 1, the second end portion 2 and the sleeve 3, and the internal space of the link device 100 can be fully utilized, so that the structure of the link device 100 is more compact, the connection is simple and reliable, and the processing, manufacturing and assembling are easy.
In another embodiment, one of the first threaded end 11 and the second threaded end 21 is fixedly connected with one end of the anti-rotation pin 4, for example, the anti-rotation pin 4 is connected to the middle of the first threaded end 11 or the second threaded end 21 by welding, clamping or screwing, or the anti-rotation pin 4 is provided as an integral structure with the first threaded end 11 or the second threaded end 21, and so on, the other one of the first threaded end 11 and the second threaded end 21 is provided with a groove 5 recessed in the axial direction, and the other end of the anti-rotation pin 4 is inserted into the groove 5 in an axially movable manner, so that the first end 1 and the second end 2 are connected by the anti-rotation pin 4 in an axially movable manner without affecting the threaded connection between the first end 1, the second end 2 and the sleeve 3, and the internal space of the link device 100 can be fully utilized, so that the structure of the link device 100 is more compact, the connection is simple and reliable, and the manufacture and the assembly are easy.
Referring to fig. 2 to 5, in one embodiment, the cross sections of the anti-rotation pin 4 and the groove 5 are both square, the center of the square is located on the axis of the link device 100, that is, the center line of the anti-rotation pin 4 and the groove 5 in the length direction coincides with the axis of the link device 100, the outer surface 41 of the anti-rotation pin 4 is attached to the inner surface 51 of the groove 5, so as to prevent the relative rotation between the first end portion 1 and the second end portion 2, and the first end portion 1 and the second end portion 2 can be maintained in a parallel or perpendicular state by adjusting the relative angle between the anti-rotation pin 4 and the groove 5. The connecting mode has the advantages of simple structure, reliable connection and easy processing, manufacturing and assembly, for example, the anti-rotation pin 4 can be processed by square steel or steel plates and can be processed by engineering excess materials so as to further reduce the cost, and the connecting rod device 100 can have certain interchangeability and can meet the assembly requirements of different positions.
Referring to fig. 7, in another embodiment, the anti-rotation pin 4 has a rectangular cross section, the groove 5 has a regular octagonal cross section, and centers of the rectangle and the regular octagonal are located on an axis of the link assembly 100, that is, a center line of the anti-rotation pin 4 and the groove 5 in a length direction coincides with the axis of the link assembly 100, and a part of an outer surface 41 of the anti-rotation pin 4 is engaged with a part of an inner surface 51 of the groove 5, so that the relative rotation between the first end portion 1 and the second end portion 2 is prevented, and the relative angle between the first end portion 1 and the second end portion 2 can be maintained at 0 ° or 45 ° or 90 ° or 135 ° or the like by adjusting the relative angle between the anti-rotation pin 4 and the groove 5.
Referring to fig. 8, in still another embodiment, the anti-rotation pin 4 has a regular octagon shape in cross section, the groove 5 has a drum shape in cross section, and the regular octagon shape and the drum shape have centers on the axis of the link device 100, that is, the anti-rotation pin 4 and the groove 5 have center lines in the length direction coinciding with the axis of the link device 100, a part of the outer surface 41 of the anti-rotation pin 4 is engaged with a part of the inner surface 51 of the groove 5, so that the relative rotation between the first end portion 1 and the second end portion 2 is prevented, and the relative angle between the first end portion 1 and the second end portion 2 can be maintained at 0 ° or 45 ° or 90 ° or 135 ° or the like by adjusting the relative angle between the anti-rotation pin 4 and the groove 5. The connecting mode has simple structure and reliable connection, is easy to process, manufacture and assemble, can ensure that the connecting rod device 100 has certain interchangeability, and can meet the assembly requirements of different positions.
In other embodiments, the groove 5 may include other non-cylindrical inner surfaces for engaging with at least a portion of the outer surface of the anti-rotation pin 4 to prevent rotation, for example, the cross-sectional shape of the groove 5 may be set to be elliptical, racetrack, arcuate, polygonal, irregular, etc., and by designing the geometry of the groove 5 and the anti-rotation pin 4, the relative angle between the first end portion 1 and the second end portion 2 can be made to meet the requirements of assembly, and in addition, the grooves 5 of the first threaded end 11 and the second threaded end 21 may have the same or different shapes and sizes, and the two ends of the anti-rotation pin 4 may have the same or different shapes and sizes.
In order to screw the first end portion 1 and the second end portion 2 into or out of the sleeve 3 oppositely to achieve the installation or the removal of the link device 100, or to adjust the length of the link device 100, the first internal thread 31 and the second internal thread 32 of the sleeve 3 may be arranged in opposite screwing directions, or in the same screwing direction but with different screw pitches.
Alternatively, the first internal thread 31 and the second internal thread 32 of the sleeve 3 are arranged in opposite screwing directions and have the same thread pitch, and the first end portion 1 and the second end portion 2 can be symmetrically screwed into or screwed out of the sleeve 3 in combination with the limitation of the anti-rotation pin 4, so as to achieve the installation or the disassembly of the link device 100, or adjust the length of the link device 100, and avoid the imbalance of the two ends of the link device 100 caused by the excessive screwing amount difference of the first end portion 1 and the second end portion 2.
Referring to fig. 1 to 5, the free outer ends of the first end portion 1 and the second end portion 2 are provided with a connecting structure 6, such as a knuckle bearing, or a circular ring, or a split structure consisting of two half rings, etc., to connect the link device 100 to other components. Alternatively, the first end portion 1 or/and the second end portion 2 may be formed by machining an existing externally threaded rod end joint bearing, thereby simplifying the structure of the connecting rod device 100 to facilitate manufacturing.
Optionally, the link device 100 further includes a locking device for locking the first end portion 1 and the second end portion 2, for example, a locking nut 7 is respectively disposed on the first end portion 1 and the second end portion 2, so as to form a double nut locking structure by the sleeve 3 and the locking nut 7, an anti-rotation structure may be further disposed between the sleeve 3 and the locking nut 7, for example, a structure such as a hole for connecting a locking wire to the sleeve 3 and the locking nut 7, or a clamping structure disposed between the sleeve 3 and the locking nut 7, etc.
Referring to fig. 1 to 4 and 6, alternatively, the outer surface 33 of the sleeve 3 is provided with a snap-fit portion 34 for snapping a tightening tool to facilitate screwing the sleeve 3 by the tightening tool to achieve the loading and unloading of the link device 100 or to adjust the length of the link device 100, for example, the snap-fit portion 34 may be provided as a polygonal column with the axis of the sleeve 3 as a center line, or a plane formed by cutting a portion of the outer surface 33 of the sleeve 3, or the like.
According to the connecting rod device 100, the first end portion 1 and the second end portion 2 are connected through the anti-rotating pin 4, so that only axial movement can be achieved between the first end portion 1 and the second end portion 2, relative rotation cannot be achieved, and the centering effect can be achieved, therefore, it is guaranteed that in the assembling or length adjusting process of the connecting rod device 100, the relative angle between the first end portion 1 and the second end portion 2 meets the assembling requirement, and the assembling efficiency and the assembling quality are improved. The linkage 100 is simple in structure, reliable in connection, and easy to manufacture and assemble.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.
Claims (10)
1. Connecting rod device, including sleeve, first tip and second tip, telescopic both sides are provided with first internal thread and second internal thread respectively, first tip with the second tip is connected to through first screwed end and second screwed end respectively first internal thread with the second internal thread, its characterized in that, connecting rod device still includes the anti-rotation pin, the both ends of anti-rotation pin respectively with first screwed end with the middle part of second screwed end is connected, the anti-rotation pin allows take place axial displacement between first tip and the second tip, and the restriction relative rotation between first tip and the second tip.
2. The link device according to claim 1, wherein the first threaded end and the second threaded end are respectively provided with a groove that is recessed in an axial direction, and both ends of the anti-rotation pin are respectively inserted into the grooves of the first threaded end and the second threaded end so as to be axially movable.
3. The link device according to claim 1, wherein one of the first threaded end and the second threaded end is fixedly coupled to one end of the anti-rotation pin, and the other of the first threaded end and the second threaded end is provided with a groove that is recessed in an axial direction, and the other end of the anti-rotation pin is axially movably inserted into the groove.
4. A linkage arrangement according to claim 2 or 3, wherein said recess includes a non-cylindrical inner surface for engaging at least part of the outer surface of said anti-rotation pin to provide anti-rotation.
5. The linkage arrangement as recited in claim 4, wherein the cross-section of the recess is a regular polygon, and a center of the regular polygon is located on an axis of the linkage arrangement.
6. The link assembly of claim 4, wherein the anti-rotation pin has a cross section of a regular polygon having a center on an axis of the link assembly.
7. A linkage arrangement as claimed in any one of claims 1 to 3, wherein said first and second internal screw threads are of opposite hand and of the same pitch.
8. A linkage arrangement according to any one of claims 1 to 3, wherein the first end or/and the second end is formed by machining a rod end knuckle bearing.
9. A linkage arrangement as claimed in any one of claims 1 to 3, further comprising two locking nuts for locking said first and second ends respectively.
10. A linkage arrangement as claimed in any one of claims 1 to 3, wherein the outer surface of the sleeve is provided with a snap-fit portion for snap-fitting a tightening tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110571705.9A CN115388083A (en) | 2021-05-25 | 2021-05-25 | Connecting rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110571705.9A CN115388083A (en) | 2021-05-25 | 2021-05-25 | Connecting rod device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115388083A true CN115388083A (en) | 2022-11-25 |
Family
ID=84114763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110571705.9A Pending CN115388083A (en) | 2021-05-25 | 2021-05-25 | Connecting rod device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115388083A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2920912A (en) * | 1958-05-12 | 1960-01-12 | Deere & Co | Adjustable link |
| DE3203031A1 (en) * | 1982-01-29 | 1983-08-04 | Lemförder Metallwaren AG, 2844 Lemförde | Variable length adjusting rod |
| US5702196A (en) * | 1996-06-21 | 1997-12-30 | Teleflex, Incorporated | Turnbuckle-type adjustable link |
| CN202851620U (en) * | 2012-09-20 | 2013-04-03 | 天津市中重科技工程有限公司 | Adjusting pull rod |
| CN104989708A (en) * | 2015-06-12 | 2015-10-21 | 仇学康 | Connecting part |
| CN109312773A (en) * | 2016-06-21 | 2019-02-05 | 赛峰直升机发动机公司 | The connecting rod of adjustable in length for turbine |
| CN213017248U (en) * | 2020-08-04 | 2021-04-20 | 博格华纳汽车零部件（江苏）有限公司 | Three-section telescopic test connecting rod |
-
2021
- 2021-05-25 CN CN202110571705.9A patent/CN115388083A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2920912A (en) * | 1958-05-12 | 1960-01-12 | Deere & Co | Adjustable link |
| DE3203031A1 (en) * | 1982-01-29 | 1983-08-04 | Lemförder Metallwaren AG, 2844 Lemförde | Variable length adjusting rod |
| US5702196A (en) * | 1996-06-21 | 1997-12-30 | Teleflex, Incorporated | Turnbuckle-type adjustable link |
| CN202851620U (en) * | 2012-09-20 | 2013-04-03 | 天津市中重科技工程有限公司 | Adjusting pull rod |
| CN104989708A (en) * | 2015-06-12 | 2015-10-21 | 仇学康 | Connecting part |
| CN109312773A (en) * | 2016-06-21 | 2019-02-05 | 赛峰直升机发动机公司 | The connecting rod of adjustable in length for turbine |
| CN213017248U (en) * | 2020-08-04 | 2021-04-20 | 博格华纳汽车零部件（江苏）有限公司 | Three-section telescopic test connecting rod |
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