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CN214304497U - Shaft connecting structure and centrifugal compressor - Google Patents

Shaft connecting structure and centrifugal compressor Download PDF

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Publication number
CN214304497U
CN214304497U CN202022125438.6U CN202022125438U CN214304497U CN 214304497 U CN214304497 U CN 214304497U CN 202022125438 U CN202022125438 U CN 202022125438U CN 214304497 U CN214304497 U CN 214304497U
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China
Prior art keywords
shaft
coupling
shell
head
actuator
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CN202022125438.6U
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Chinese (zh)
Inventor
姜宝石
唐玮旻
易勇
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Zhejiang Dunan Artificial Environment Co Ltd
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Zhejiang Dunan Artificial Environment Co Ltd
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Priority to CN202022125438.6U priority Critical patent/CN214304497U/en
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Abstract

The utility model relates to a shaft connecting structure and centrifugal compressor, this shaft connecting structure includes: the device comprises a shell, a driving shaft, an actuator, a fixed bracket and a coupling. One end of the driving shaft is assembled in the shell, and the other end of the driving shaft extends out of the shell. The executor is installed in the casing outside, and the executor includes body and output pivot, and the body is connected to the output pivot. The fixed support is fixedly connected with the body and the shell. One end of the coupling is connected with the driving shaft, and the other end of the coupling is sleeved on the output rotating shaft. And the output rotating shaft can move along the axial direction of the coupling so as to adjust the relative position of the actuator and the shell. The utility model provides an among the prior art executor can't install in the problem of casing through the fixed bolster accurately.

Description

Shaft connecting structure and centrifugal compressor
Technical Field
The utility model relates to a connection structure technical field especially relates to a shaft connecting structure and centrifugal compressor.
Background
The centrifugal compressor comprises a shell, a fixed support, an actuator, a driving shaft, a coupling, a driving blade and a driven blade, wherein the actuator comprises a body and an output rotating shaft. The driving blade and the driven blade are arranged in the shell, one end of the driving shaft is connected with the driving blade, the other end of the driving shaft extends out of the shell and is connected with the output rotating shaft through a coupling, and the actuator body is connected outside the shell through a fixing support.
Since the relative position between the coupling and the output shaft is not adjustable, mechanical tolerances may exist during manufacture and assembly of the centrifugal compressor, resulting in some deviation in the length of the portion of the drive shaft extending out of the housing. And the body of the actuator cannot be accurately mounted to the housing through the fixing bracket.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a shaft connecting structure and a centrifugal compressor, which solve the problem in the prior art that an actuator cannot be accurately mounted on a housing through a fixing bracket due to a certain deviation of relative mounting positions of a driving shaft and an output rotating shaft.
The utility model provides a shaft connecting structure, this shaft connecting structure includes: the device comprises a shell, a driving shaft, an actuator, a fixed bracket and a coupling. One end of the driving shaft is assembled in the shell, and the other end of the driving shaft extends out of the shell. The executor is installed in the casing outside, and the executor includes body and output pivot, and the body is connected to the output pivot. The fixed support is fixedly connected with the body and the shell. One end of the coupling is connected with the driving shaft, and the other end of the coupling is sleeved on the output rotating shaft. And the output rotating shaft can move along the axial direction of the coupling so as to adjust the relative position of the actuator and the shell.
In an embodiment of the present invention, the coupling is provided with a connecting hole, the output shaft is provided with a second head, and the second head extends into the connecting hole. In this way, the position of the output rotating shaft in the coupling can be adjusted by changing the depth of the second head part inserted into the connecting hole, namely, the relative position of the actuator and the shell is adjusted. So set up, the regulation of the relative position of executor and casing becomes simple and convenient.
In an embodiment of the present invention, the connecting hole penetrates through two axial end faces of the coupling, the driving shaft is provided with a first head portion, and the first head portion is inserted into the connecting hole from an end of the connecting hole away from the output shaft. Since the coupling hole penetrates both end surfaces in the axial direction of the coupling, when the output shaft and the drive shaft are assembled by the coupling, the second head is inserted into one end of the coupling hole, and the first head is inserted into the other end of the coupling hole. So set up, improved shaft connecting structure's assembly efficiency greatly.
In an embodiment of the present invention, the driving shaft further includes a main body portion connected to the first head portion, a step is formed between the first head portion and the main body portion, and the coupling is away from the end surface abutting step of the actuator. Therefore, when the first head is inserted into the connecting hole, if the end face of the coupling, which is far away from one end of the actuator, abuts against the step, the first head cannot continue to extend into the connecting hole, and the first head is clamped at a fixed position in the connecting hole. So set up, be favorable to the accurate positioning to the joint position of drive shaft and shaft coupling.
In an embodiment of the present invention, the coupling has a length L, the first head has a length Y, and the following relation is satisfied: l is more than Y. Because the body of the actuator is fixedly connected with the shell through the fixing bracket, the length of the coupling is greater than that of the first head, namely, the second head can be inserted into the connecting hole, and the connection between the driving shaft and the output rotating shaft is completed.
In an embodiment of the present invention, the connecting hole is a polygonal through hole, and the shape of the second head portion is adapted to the shape of the connecting hole. Thus, the second head portion is also polygonal in cross-section. The second head part with the polygonal section and the polygonal hole are easy to machine and form, so that the manufacturing cost of the shaft connecting structure can be greatly reduced.
In an embodiment of the present invention, the length of the second head is X, and the length of the second head from the body is M, which satisfies the following relation: l is more than X + Y and less than or equal to X + Y + M. So set up, be favorable to increasing the control range of output pivot and shaft coupling relative position.
In an embodiment of the present invention, the fixing bracket is detachably connected to the body through the first fastening member; and/or the fixed support is detachably connected with the shell through a second fastener.
In an embodiment of the present invention, the bearing is fixed to the housing, and the driving shaft is inserted into the bearing and rotatably connected to the bearing. The bearing plays supporting and limiting roles in the driving shaft, and the stability of the driving shaft in operation is greatly improved.
The utility model also provides a centrifugal compressor, including initiative blade, driven blade and any one above embodiment the axle connecting structure, the one end connection initiative blade in the casing is located to the drive shaft, and driven blade is connected to the initiative blade to the moment of torsion that makes the body produce is transmitted to driven blade through initiative blade from the drive shaft.
When the shaft connecting structure and the centrifugal compressor are assembled, one end of the driving shaft is assembled in the shell, and the other end of the driving shaft extends out of the shell; then, the output rotating shaft and the driving shaft are preliminarily connected through a coupling; and then, fixedly connecting the body and the shell by using the fixing bracket. Because the output rotating shaft can move along the axial direction of the coupling, the relative position of the actuator and the shell can be adjusted. Therefore, in the process of fixedly connecting the body and the shell by the fixing bracket, the relative position of the actuator and the shell can be indirectly adjusted by adjusting the position of the output rotating shaft in the coupling, so that the actuator can be accurately installed on the shell by the fixing bracket. Therefore, the utility model provides an among the prior art executor can't install in the problem of casing through the fixed bolster accurately.
Drawings
Fig. 1 is a sectional view of a shaft connecting structure according to an embodiment of the present invention;
fig. 2 is a schematic partial structural view of a shaft connecting structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a shaft coupling according to an embodiment of the present invention.
Reference numerals: 1. a housing; 2. a drive shaft; 21. a first head portion; 22. a main body portion; 23. a step; 3. An actuator; 31. a body; 32. an output shaft; 321. a second head; 4. fixing a bracket; 5. a coupling; 51. connecting holes; 6. a first fastener; 7. a second fastener; 8. and a bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, the present invention provides a shaft connecting structure, which includes: the device comprises a shell 1, a driving shaft 2, an actuator 3, a fixed bracket 4 and a coupling 5. One end of the drive shaft 2 is fitted into the housing 1, and the other end of the drive shaft 2 protrudes out of the housing 1. The actuator 3 is installed outside the housing 1, the actuator 3 includes a body 31 and an output rotating shaft 32, and the output rotating shaft 32 is connected to the body 31. The fixing bracket 4 fixedly connects the body 31 and the housing 1. One end of the coupling 5 is connected with the driving shaft 2, and the other end of the coupling 5 is sleeved on the output rotating shaft 32. And the output shaft 32 can be moved axially along the coupling 5 to adjust the relative position of the actuator 3 and the housing 1.
When the shaft connecting structure provided by the utility model is assembled, one end of the driving shaft 2 is assembled in the shell 1, and the other end of the driving shaft 2 extends out of the shell 1; then, the output rotating shaft 32 and the driving shaft 2 are primarily connected through the coupling 5; thereafter, the connecting body 31 and the housing 1 are fixed by the fixing bracket 4. Since the output rotary shaft 32 can move axially along the coupling 5, the relative position of the actuator 3 and the housing 1 can be adjusted. Therefore, in the process of fixedly connecting the body 31 and the housing 1 by the fixing bracket 4, the relative position of the actuator 3 and the housing 1 can be indirectly adjusted by adjusting the position of the output rotating shaft 32 in the coupling 5, so that the actuator 3 can be accurately installed on the housing 1 by the fixing bracket 4. Therefore, the utility model provides an among the prior art executor 3 can't install in the problem of casing 1 through fixed bolster 4 accurately.
In one embodiment, as shown in fig. 2 and 3, the coupling 5 is provided with a coupling hole 51, and the output shaft 32 is provided with a second head portion 321, the second head portion 321 extending into the coupling hole 51. In this way, by changing the depth of the second head 321 inserted into the connecting hole 51, the position of the output rotating shaft 32 in the coupling 5, that is, the relative position of the actuator 3 and the housing 1, can be adjusted. So set up, the regulation of the relative position of the actuator 3 and the shell 1 becomes simple and convenient.
In one embodiment, as shown in fig. 2 and 3, the coupling hole 51 penetrates both end surfaces of the coupling 5 in the axial direction, the drive shaft 2 is provided with the first head portion 21, and the first head portion 21 is engaged into the coupling hole 51 from an end of the coupling hole 51 away from the output rotary shaft 32. Since the coupling hole 51 penetrates both end surfaces in the axial direction of the coupling 5, when the output shaft 32 and the drive shaft 2 are assembled by the coupling 5, the second head portion 321 is inserted into one end of the coupling hole 51, and the first head portion 21 is inserted into the other end of the coupling hole 51. So set up, improved shaft connecting structure's assembly efficiency greatly.
In one embodiment, as shown in fig. 2 and 3, the driving shaft 2 further includes a main body portion 22 connected to the first head portion 21, a step 23 is formed between the first head portion 21 and the main body portion 22, and an end surface of the coupling 5 at an end remote from the actuator 3 abuts against the step 23. When the end face of the coupling 5 remote from the actuator 3 abuts against the step 23 when the first head 21 is inserted into the connection hole 51 in this manner, the first head 21 cannot be further inserted into the connection hole 51, and the first head 21 is locked at a fixed position in the connection hole 51. So set up, be favorable to the accurate location of the joint position of drive shaft 2 and coupling 5.
In one embodiment, as shown in fig. 2, the coupling 5 has a length L and the first head 21 has a length Y that satisfies the relationship: l is more than Y. Since the body 31 of the actuator 3 is fixedly connected to the housing 1 by the fixing bracket 4, the coupling 5 has a length greater than that of the first head 21, i.e., the second head 321 is inserted into the connecting hole 51, thereby completing the connection between the driving shaft 2 and the output rotating shaft 32.
In one embodiment, as shown in fig. 2 and 3, the connection hole 51 is a polygonal through hole, and the shape of the second head portion 321 is adapted to the shape of the connection hole 51. Therefore, the second head 321 also has a polygonal cross section. The second head 321 with the polygonal section and the polygonal hole are easy to machine and form, so that the manufacturing cost of the shaft connecting structure can be greatly reduced. Specifically, the connecting hole 51 may be a triangle, a quadrangle, a pentagon, a hexagon, etc., which is not limited by the present invention.
In an embodiment, as shown in fig. 2, the length of the second head 321 is X, and the length of the second head 321 from the body 31 is M, which satisfy the following relation: l is more than X + Y and less than or equal to X + Y + M. So arranged, it is advantageous to increase the adjustment range of the relative positions of the output shaft 32 and the coupling 5.
In one embodiment, as shown in FIG. 1, the fixing bracket 4 is detachably connected to the body 31 by the first fastening member 6. The fixed bracket 4 is detachably connected with the housing 1 through a second fastener 7. With this arrangement, the efficiency of assembling the actuator 3 and the housing 1 is improved. But not limited thereto, the fixing bracket 4 and the body 31 may also be welded, and the fixing bracket 4 and the case 1 may be welded. Alternatively, the fixing bracket 4 and the body 31 may be clamped together, and the fixing bracket 4 and the housing 1 may be clamped together.
In one embodiment, as shown in fig. 1, the device further includes a bearing 8 disposed between the housing 1 and the driving shaft 2, the bearing 8 is fixed to the housing 1, and the driving shaft 2 is disposed through the bearing 8 and rotatably connected to the bearing 8. The bearing 8 plays a supporting and limiting role in the driving shaft 2, and the stability of the driving shaft 2 in operation is greatly improved.
The utility model also provides a centrifugal compressor, including initiative blade, driven blade and above arbitrary one embodiment the axle connecting structure, the one end that casing 1 was located to drive shaft 2 is connected the initiative blade, and driven blade is connected to the initiative blade to the moment of torsion that makes body 31 produce is transmitted to driven blade through the initiative blade from drive shaft 2. Thus, the actuator 3 can drive the driving blade to rotate, and the driven blade is driven to rotate by the driving blade.
The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. A shaft connecting structure, characterized by comprising:
a housing (1);
a driving shaft (2), one end of which is assembled in the shell (1) and the other end of which extends out of the shell (1);
the actuator (3) is arranged on the outer side of the shell (1), the actuator (3) comprises a body (31) and an output rotating shaft (32), and the output rotating shaft (32) is connected with the body (31);
a fixed bracket (4) fixedly connecting the body (31) and the shell (1); and
a coupling (5) with one end connected with the driving shaft (2) and the other end sleeved on the output rotating shaft (32); and the output rotating shaft (32) can move along the axial direction of the coupling (5) so as to adjust the relative position of the actuator (3) and the shell (1).
2. Shaft connection according to claim 1, characterized in that the coupling (5) is provided with a connection hole (51), and the output shaft (32) is provided with a second head (321), the second head (321) extending into the connection hole (51).
3. Shaft connection structure according to claim 2, characterized in that the connection hole (51) penetrates both end faces in the axial direction of the coupling (5), and the drive shaft (2) is provided with a first head portion (21), and the first head portion (21) is caught in the connection hole (51) from an end of the connection hole (51) away from the output rotary shaft (32).
4. A shaft connection according to claim 3, characterized in that said drive shaft (2) further comprises a main body portion (22) connecting said first head portion (21), a step (23) is formed between said first head portion (21) and said main body portion (22), and an end surface of said coupling (5) remote from an end of said actuator (3) abuts against said step (23).
5. A shaft connection according to claim 3, characterized in that said coupling (5) has a length L and said first head portion (21) has a length Y satisfying the relation: l is more than Y.
6. Shaft connection according to claim 2, characterized in that the connection hole (51) is a polygonal through hole, the shape of the second head (321) being adapted to the shape of the connection hole (51).
7. Shaft connection according to claim 6, characterized in that the length of the second head (321) is X and the length of the second head (321) from the body (31) is M, satisfying the relation: l is more than X + Y and less than or equal to X + Y + M.
8. Shaft connection according to claim 1, characterized in that the fixed bracket (4) is removably connected to the body (31) by means of a first fastener (6);
and/or the fixed support (4) is detachably connected with the shell (1) through a second fastener (7).
9. The shaft connection according to claim 1, further comprising a bearing (8) disposed between the housing (1) and the driving shaft (2), wherein the bearing (8) is fixed to the housing (1), and the driving shaft (2) is inserted into the bearing (8) and rotatably connected to the bearing (8).
10. A centrifugal compressor comprising a driving blade, a driven blade and a shaft connecting structure according to any one of claims 1 to 9, wherein the driving shaft (2) is provided at an end inside the housing (1) to be connected to the driving blade, and the driving blade is connected to the driven blade so that a torque generated by the body (31) is transmitted from the driving shaft (2) to the driven blade through the driving blade.
CN202022125438.6U 2020-09-23 2020-09-23 Shaft connecting structure and centrifugal compressor Active CN214304497U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022125438.6U CN214304497U (en) 2020-09-23 2020-09-23 Shaft connecting structure and centrifugal compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022125438.6U CN214304497U (en) 2020-09-23 2020-09-23 Shaft connecting structure and centrifugal compressor

Publications (1)

Publication Number Publication Date
CN214304497U true CN214304497U (en) 2021-09-28

Family

ID=77827658

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022125438.6U Active CN214304497U (en) 2020-09-23 2020-09-23 Shaft connecting structure and centrifugal compressor

Country Status (1)

Country Link
CN (1) CN214304497U (en)

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