CN220979938U - Detachable guide vane transmission structure with axial positioning function - Google Patents
Detachable guide vane transmission structure with axial positioning function Download PDFInfo
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- CN220979938U CN220979938U CN202322595650.2U CN202322595650U CN220979938U CN 220979938 U CN220979938 U CN 220979938U CN 202322595650 U CN202322595650 U CN 202322595650U CN 220979938 U CN220979938 U CN 220979938U
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- guide vane
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
A detachable guide vane transmission structure with axial positioning comprises an actuator, a connecting shaft, a driving shaft, a positioning pin, a bushing and a driving crank which is detachably connected to one end of a guide vane; the connecting shaft, the driving shaft and the driving crank are sequentially clamped and matched and are coaxially arranged with the guide vane, and one end of the connecting shaft is driven by the actuator to form synchronous rotation of the connecting shaft, the driving crank and the guide vane; one end of the driving shaft is coaxially clamped with the driving crank through a positioning pin and a positioning hole, and the other end of the driving shaft is positioned on the outer shell of the compressor through a bushing. According to the guide vane long cantilever transmission structure, the guide vane long cantilever transmission structure is divided into a plurality of sections for clamping, large deflection is not easy to generate during processing, the manufacturing difficulty is reduced, the yield is high, and the assembly is simple and quick; utilize locating pin and bush support drive shaft both sides, can reduce the bearing local atress of stator tip, be difficult for wearing and tearing influence life for the stator rotates smoothly, solves the problem of jam.
Description
Technical Field
The utility model relates to the field of centrifugal compressors, in particular to a detachable guide vane transmission structure with axial positioning.
Background
Centrifugal compressors typically achieve control of flow by varying inlet guide vane (guide vane) angles and impeller speed. At present, the adjustment of the guide blades is generally coordinated through a linkage structure, wherein one guide blade is directly driven by a motor, so that synchronous driving of a plurality of guide blades can be realized; the air inlet regulating device of centrifugal refrigeration compressor with the application number 2017200259621 is characterized in that the rotating shaft of each blade is in transmission connection with a transmission convex rod through a transmission connecting rod, so that when one blade rotates, synchronous linkage of other blades can be realized through the arrangement of an annular rotating piece; one of the blades is connected with the driving motor through a rotating shaft, the rotating shaft is of a cantilever structure, the length of the cantilever structure in an actual product is long, large deflection is easy to generate in the processing process, the problems of large manufacturing difficulty, low yield and the like are solved, and the following defects are caused to solve the defects:
1. the longer rotating shaft is easy to generate larger deflection in the processing process, and has the problems of large manufacturing difficulty, lower yield and the like;
2. The longer pivot does not have axial positioning when the installation, and the blade probably does not lie in an axis with the pivot, leads to bearing wear, and the stator rotates and has the problem of jam, and the bearing life-span is low.
Therefore, how to solve the above-mentioned drawbacks of the prior art is a subject to be studied and solved by the present utility model.
Disclosure of utility model
The utility model aims to provide a detachable guide vane transmission structure with axial positioning.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
A detachable guide vane transmission structure with axial positioning comprises an actuator, a connecting shaft, a driving shaft, a positioning pin, a bushing and a driving crank which is detachably connected with one end of a guide vane;
The connecting shaft, the driving shaft and the driving crank are sequentially clamped and matched and are coaxially arranged with the guide vane, one end of the connecting shaft is driven by the actuator to form synchronous rotation of the connecting shaft, the driving crank and the guide vane;
one end of the driving shaft is coaxially clamped with the driving crank through the positioning pin and the positioning hole, and the other end of the driving shaft is positioned on the compressor shell body through the bushing.
Preferably, the connecting shaft is in clamping fit with the driving shaft through a first clamping structure, and the driving shaft is in clamping fit with the driving crank through a second clamping structure.
Further preferably, the two clamping structures each include a rectangular clamping groove and a rectangular clamping block, and the first clamping structures and the second clamping structures are vertically distributed.
Preferably, the two ends of the positioning pin are respectively in clamping fit with the positioning holes on the opposite surfaces of the driving shaft and the driving crank, and the positioning pin is in interference fit with the positioning holes on the end surface of the driving shaft and in clearance fit with the positioning holes on the end surface of the driving crank.
Preferably, the actuator is detachably connected to the compressor housing by a mounting, and the bushing is positioned between the drive shaft and the mounting.
Further preferably, sealing rings are arranged between the driving shaft and the bushing, between the bushing and the mounting seat and between the mounting seat and the compressor outer shell.
Further preferably, the outer circumferential surface of the driving shaft includes an annular step surface, one end of the bushing, which is close to the guide vane, radially protrudes to form a baffle ring, two end surfaces of the baffle ring respectively abut against the vertical surface of the annular step surface and one end surface of the mounting seat, and the other end of the mounting seat radially protrudes to form a baffle plate, and one end surface of the baffle plate, which is close to the guide vane, abuts against the outer surface of the outer shell of the compressor.
Preferably, one end of each guide vane is installed on an inner cylinder body in a penetrating way through a bearing, and the inner cylinder body is connected with an external compressor shell; one end of the guide vane is matched with the mounting hole at one end of the driving crank in a clamping way and is detachably connected with the mounting hole through a threaded pin.
The working principle and the advantages of the utility model are as follows:
According to the utility model, the connecting shaft, the driving shaft and the driving crank are clamped by the rectangular clamping groove and the rectangular clamping block, so that the longer cantilever structure is divided into a plurality of sections, and on the basis of stably transmitting torque among the connecting shaft, the driving crank and the guide vane, each section structure is not easy to generate larger deflection during processing, the manufacturing difficulty is reduced, the yield is high, and the assembly is simple and quick;
According to the utility model, the driving shaft and the driving crank are coaxially positioned by using the positioning pin, one end of the driving shaft is supported, the other end of the driving shaft is supported by using the bushing, the distance from the rectangular clamping groove to the bushing is reduced, the high coaxiality between the whole transmission structure and the guide vane is ensured, the bearing local stress at the end part of the guide vane can be reduced, the service life is not easily influenced by abrasion, the guide vane rotates smoothly, and the problem of clamping is solved;
The driving shaft and the driving crank are coaxially positioned by the positioning pin, a blind assembly mode of completely experience assembly when only the rectangular clamping groove and the rectangular clamping block are utilized to be assembled can be broken, and the rapid axial positioning of the driving shaft and the driving crank can be realized; in addition, through the interference fit of the locating pin and the locating hole of the end face of the driving shaft and the clearance fit of the locating pin and the locating hole of the end face of the driving crank, the axial locating precision can be further ensured, and meanwhile, the assembly is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a compressor according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with an embodiment of the present utility model;
FIG. 3 is an enlarged view of part B of FIG. 2 in accordance with an embodiment of the present utility model;
FIG. 4 is an exploded view of a transmission structure according to an embodiment of the present utility model;
FIG. 5 is a top view of a transmission structure according to an embodiment of the present utility model;
Fig. 6 is a cross-sectional view at C-C of fig. 5 of an embodiment of the present utility model.
In the above figures: 1. an actuator; 2. a connecting shaft; 3. a drive shaft; 31. an annular step surface; 4. a positioning pin; 5. a drive crank; 51. a mounting hole; 6. a guide vane; 7. a first clamping structure; 8. a second clamping structure; 9. a mounting base; 10. a compressor housing; 11. a bushing; 12. a seal ring; 13. a baffle ring; 14. a baffle; 15. an inner cylinder; 16. a threaded pin; 17. and (3) a bearing.
Detailed Description
The utility model is further described below with reference to the accompanying drawings and examples:
Examples: the present invention will be described in detail with reference to the drawings, wherein modifications and variations are possible in light of the teachings of the present invention, without departing from the spirit and scope of the present invention, as will be apparent to those of skill in the art upon understanding the embodiments of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Singular forms such as "a," "an," "the," and "the" are intended to include the plural forms as well, as used herein.
The terms "first," "second," and the like, as used herein, do not denote a particular order or sequence, nor are they intended to be limiting, but rather are merely used to distinguish one element or operation from another in the same technical term.
As used herein, "connected" or "positioned" may refer to two or more components or devices in physical contact with each other, or indirectly, or in operation or action with each other.
As used herein, the terms "comprising," "including," "having," and the like are intended to be open-ended terms, meaning including, but not limited to.
The term (terms) as used herein generally has the ordinary meaning of each term as used in this field, in this disclosure, and in the special context, unless otherwise noted. Certain terms used to describe the present disclosure are discussed below, or elsewhere in this specification, to provide additional guidance to those skilled in the art in connection with the description herein.
The terms "front", "rear", "upper", "lower", "left", "right" and the like used herein are directional terms, and are merely used to describe positional relationships among the structures in the present application, and are not intended to limit the present protection scheme and the specific direction in actual implementation.
Referring to fig. 1-6, a detachable guide vane transmission structure with axial positioning comprises an actuator 1, a connecting shaft 2, a driving shaft 3, a positioning pin 4, a bushing 11 and a driving crank 5 detachably connected to one end of a guide vane 6.
The actuator 1 is of a motor structure, and the actuator 1 is detachably connected with the compressor outer shell 10 through a mounting seat 9.
One end of each guide vane 6 is installed on an inner cylinder 15 in a penetrating way through a bearing 17, and the inner cylinder 15 is connected with an external compressor outer shell 10; one end of the guide vane 6 is in clamping fit with a mounting hole 51 at one end of the driving crank 5 and is detachably connected through a threaded pin 16, the threaded pin 16 is inserted from the radial direction of the guide vane 6, penetrates through the side wall of the driving crank 5 and extends into the guide vane 6, and the coaxial stable connection of the guide vane 6 and the driving crank 5 is ensured. The driving crank 5 is an element for transmitting the torque of one guide vane 6, and can be equivalent to a swinging rod in an air inlet regulating device of a centrifugal refrigeration compressor with the application number 2017200259621, and is used for synchronously linking other guide vanes 6 by matching with other transmission elements when one guide vane 6 rotates.
The connecting shaft 2, the driving shaft 3 and the driving crank 5 are sequentially in clamping fit and are coaxially arranged with the guide vane 6; one end of the connecting shaft 2 is driven by the actuator 1 to form synchronous rotation of the connecting shaft 2, the driving shaft 3, the driving crank 5 and the guide vane 6.
The connecting shaft 2 is in clamping fit with the driving shaft 3 through a first clamping structure 7, and the driving shaft 3 is in clamping fit with the driving crank 5 through a second clamping structure 8; both clamping structures comprise rectangular clamping grooves and rectangular clamping blocks, and the first clamping structure 7 and the second clamping structure 8 are vertically distributed. Utilize the joint cooperation of rectangle draw-in groove and rectangle fixture block, can realize stable transmission torque between connecting axle 2, drive shaft 3, drive crank 5 and the stator 6 for difficult great amount of deflection that produces when each structure processing, the manufacturing degree of difficulty reduces, and the yield is high, and the assembly is simple quick.
One end of the driving shaft 3 is coaxially clamped with the driving crank 5 through the positioning pin 4 and the positioning hole; specifically, two ends of the positioning pin 4 are respectively in clamping fit with positioning holes on opposite surfaces of the driving shaft 3 and the driving crank 5;
the other end of the drive shaft 3 is externally positioned on the compressor housing 10 by the bushing 11, the bushing 11 being positioned between the drive shaft 3 and the mount 9. Specifically, the outer peripheral surface of the driving shaft 3 includes an annular step surface 31, one end of the bushing 11 near the guide vane 6 radially protrudes with a baffle ring 13, two end surfaces of the baffle ring 13 respectively abut against the vertical surface of the annular step surface 31 and one end surface of the mounting seat 9, the other end of the mounting seat 9 radially protrudes with a baffle plate 14, and one end surface of the baffle plate 14 near the guide vane 6 abuts against the outer surface of the compressor casing 10. So arranged, the bushing 11 can be stably clamped between the drive shaft 3 and the mount 9.
Because rectangle draw-in groove and rectangle fixture block only provide the moment in the transmission, do not have the axial positioning effect, the longer cantilever that constitutes when connecting axle 2, drive shaft 3 and drive crank 5, the axial positioning error is big more, therefore we utilize locating pin 4 with drive shaft 3 and drive crank 5 and 6 coaxial location of stator, and increase bush 11 length, make drive shaft 3 outside location length increase, reduce rectangle draw-in groove to the distance of bush 11 simultaneously, longer drive shaft 3 both sides are supported by locating pin 4 and bush 11 respectively, can reduce the bearing 17 local atress of stator 6 tip, be difficult for wearing and tearing influence life, make stator 6 rotate smoothly, solve the problem of blocking.
In addition, because the length of the driving shaft 3 is longer, if the driving shaft is clamped with the driving crank 5 only by the rectangular clamping groove and the rectangular clamping block, the axial positioning is difficult to realize, so that the blind mounting mode of completely empirical assembly is broken through by the arrangement of the positioning pin 4, and the rapid axial positioning of the driving shaft 3 and the driving crank 5 can be realized. In order to further ensure the axial positioning accuracy and improve the assembly, the positioning pin 4 is in interference fit with the positioning hole of the end face of the driving shaft 3 and in clearance fit with the positioning hole of the end face of the driving crank 5.
In order to ensure the tightness of the assembly gap between the transmission structure and the compressor, sealing rings 12 are arranged between the driving shaft 3 and the bushing 11, between the bushing 11 and the mounting seat 9 and between the mounting seat 9 and the compressor outer shell 10, and the sealing rings 12 are O-shaped rings.
Specifically, at least two O-rings are arranged on the annular surface where the driving shaft 3 and the bushing 11 are attached, at least one O-ring is arranged on the annular surface where the bushing 11 and the mounting seat 9 are attached, and at least one O-ring is arranged between the baffle 14 at one end of the mounting seat 9 and the outer surface of the compressor outer shell 10.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (8)
1. The detachable guide vane transmission structure with the axial positioning function is characterized by comprising an actuator (1), a connecting shaft (2), a driving shaft (3), a positioning pin (4), a bushing (11) and a driving crank (5) which is detachably connected with one end of a guide vane (6);
The connecting shaft (2), the driving shaft (3) and the driving crank (5) are sequentially clamped and matched and are coaxially arranged with the guide vane (6), one end of the connecting shaft (2) is driven by the actuator (1) to form synchronous rotation of the connecting shaft (2), the driving shaft (3), the driving crank (5) and the guide vane (6);
One end of the driving shaft (3) is coaxially clamped with the driving crank (5) through the positioning pin (4) and the positioning hole, and the other end of the driving shaft is externally positioned on the compressor shell body (10) through the bushing (11).
2. The detachable vane drive structure with axial positioning of claim 1, wherein: the connecting shaft (2) is in clamping fit with the driving shaft (3) through a first clamping structure (7), and the driving shaft (3) is in clamping fit with the driving crank (5) through a second clamping structure (8).
3. The detachable vane drive structure with axial positioning of claim 2, wherein: the two clamping structures comprise rectangular clamping grooves and rectangular clamping blocks, and the first clamping structures (7) and the second clamping structures (8) are vertically distributed.
4. The detachable vane drive structure with axial positioning of claim 1, wherein: the two ends of the locating pin (4) are respectively matched with locating holes on the opposite faces of the driving shaft (3) and the driving crank (5) in a clamping mode, and the locating pin (4) is in interference fit with locating holes on the end face of the driving shaft (3) and is in clearance fit with locating holes on the end face of the driving crank (5).
5. The detachable vane drive structure with axial positioning of claim 1, wherein: the actuator (1) is detachably connected with the compressor outer shell (10) through a mounting seat (9), and the bushing (11) is positioned between the driving shaft (3) and the mounting seat (9).
6. The detachable vane drive structure with axial positioning of claim 5, wherein: sealing rings (12) are arranged between the driving shaft (3) and the bushing (11), between the bushing (11) and the mounting seat (9) and between the mounting seat (9) and the compressor outer shell (10).
7. The detachable vane drive structure with axial positioning of claim 5, wherein: the outer peripheral surface of the driving shaft (3) comprises an annular step surface (31), one end, close to the guide vane (6), of the bushing (11) radially protrudes to form a baffle ring (13), two end surfaces of the baffle ring (13) respectively abut against the vertical surface of the annular step surface (31) and one end surface of the mounting seat (9), the other end of the mounting seat (9) radially protrudes to form a baffle (14), and one end surface, close to the guide vane (6), of the baffle (14) abuts against the outer surface of the compressor outer shell (10).
8. The detachable vane drive structure with axial positioning of claim 1, wherein: one end of each guide vane (6) is arranged on an inner cylinder body (15) in a penetrating way through a bearing, and the inner cylinder body (15) is connected with an external compressor shell body (10); one end of the guide vane (6) is matched with a mounting hole (51) at one end of the driving crank (5) in a clamping way and is detachably connected through a threaded pin (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322595650.2U CN220979938U (en) | 2023-09-25 | 2023-09-25 | Detachable guide vane transmission structure with axial positioning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322595650.2U CN220979938U (en) | 2023-09-25 | 2023-09-25 | Detachable guide vane transmission structure with axial positioning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979938U true CN220979938U (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322595650.2U Active CN220979938U (en) | 2023-09-25 | 2023-09-25 | Detachable guide vane transmission structure with axial positioning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979938U (en) |
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2023
- 2023-09-25 CN CN202322595650.2U patent/CN220979938U/en active Active
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