CN214196586U - Rigid shaft connecting structure of compressor - Google Patents
Rigid shaft connecting structure of compressor Download PDFInfo
- Publication number
- CN214196586U CN214196586U CN202022836925.3U CN202022836925U CN214196586U CN 214196586 U CN214196586 U CN 214196586U CN 202022836925 U CN202022836925 U CN 202022836925U CN 214196586 U CN214196586 U CN 214196586U
- Authority
- CN
- China
- Prior art keywords
- connecting portion
- motor shaft
- bent axle
- compressor
- rigid shaft
- 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
Images
Landscapes
- Compressor (AREA)
Abstract
The utility model provides a compressor rigid shaft connection structure, including bent axle, motor shaft and fastening components, the link of bent axle has first connecting portion, the link of motor shaft has the second connecting portion, be provided with the setting element between first connecting portion and the second connecting portion, run through first connecting portion and second connecting portion so that through fastening components the bent axle is connected with the motor shaft. The utility model discloses reduced overall structure's part quantity, the installation accuracy error is little, reduces workman assembly intensity of labour, and simple structure, connection are reliable, have guaranteed the self performance of bent axle and motor shaft.
Description
Technical Field
The utility model belongs to the technical field of reciprocating type gas compressor, especially, relate to a compressor rigid shaft connection structure.
Background
The reciprocating compressor is a compressor which can make the volume of cylinder body change periodically by means of reciprocating movement of piston or diaphragm in the cylinder and can implement pressurization and delivery of gas. The reciprocating compressor is divided into piston type and diaphragm type compressor, and its principle is that crankshaft drives connecting rod, which drives piston to make piston move up and down, and the piston moves to change the volume in cylinder.
At present, the connecting structure of the crankshaft and the motor shaft of the compressor is generally that the crankshaft and the motor shaft of the compressor are respectively provided with a key slot and connected through a coupling. The coupler is a key connecting structure of a crankshaft and a motor shaft of the reciprocating compressor, has high installation precision requirement and high reliability requirement, and bears complex torsional alternating stress. Usually, need to cooperate through setting up between the bloated cover and the shaft coupling at bent axle end and motor end, however, current connection structure has following problem: the number of processed parts is large, and the processing procedure is complicated; the installation precision error is large, and the connection is unreliable after the assembly; the labor intensity of operators is high, and 2-4 persons are often needed to complete the assembly task; the work efficiency is low, and the time is usually 5-10 hours for installation.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings in the prior art, an object of the present invention is to provide a rigid shaft connection structure for a compressor, which is used to solve the problems of complex connection structure and complex processing in the prior art.
In order to achieve the above and other related objects, the present invention provides a rigid shaft connecting structure for a compressor, including a crankshaft, a motor shaft, and a fastening assembly, wherein a connecting end of the crankshaft has a first connecting portion, a connecting end of the motor shaft has a second connecting portion, a positioning member is provided between the first connecting portion and the second connecting portion, and the fastening assembly penetrates through the first connecting portion and the second connecting portion so that the crankshaft is connected to the motor shaft.
Further, the first connecting portion and the crankshaft are integrally formed, and the second connecting portion and the motor shaft are integrally formed.
Further, the first connecting portion and the second connecting portion are both disc-shaped.
Further, the outer edges of the first connecting portion and the second connecting portion are flush, and the thicknesses of the first connecting portion and the second connecting portion are equal.
Furthermore, the locating piece is in a ring shape, and the outer edge of the locating piece is flush with the outer edges of the first connecting portion and the second connecting portion.
Furthermore, a first groove is formed in the outer edge of the end face, far away from the crankshaft, of one side of the first connecting portion in the circumferential direction, a second groove is formed in the outer edge of the end face, far away from the motor shaft, of one side of the second connecting portion in the circumferential direction, and when the crankshaft is connected with the motor shaft, the positioning piece is pressed in an accommodating space formed by the first groove and the second groove.
Further, the thickness of the positioning piece is larger than the sum of the depth of the first groove and the depth of the second groove.
Furthermore, a plurality of first connecting holes are formed in the first connecting portion in a penetrating mode along the circumferential uniform distribution, a plurality of second connecting holes are formed in the second connecting portion in a penetrating mode along the circumferential uniform distribution, a plurality of third connecting holes are formed in the positioning piece in a penetrating mode along the circumferential uniform distribution, when the crankshaft is connected with the motor shaft, the first connecting holes, the second connecting holes and the third connecting holes are aligned one by one, and the first connecting holes, the second connecting holes and the third connecting holes are connected through the fastening assembly.
Further, the fastening assembly comprises a bolt and a nut, and the bolt head of the bolt is arranged in the forward and reverse directions at intervals along the circumferential direction of the first connecting part or the second connecting part.
Furthermore, the first connecting portion are close to one side terminal surface of bent axle and the transition of the periphery wall circular arc of bent axle, the second connecting portion are close to one side terminal surface of motor shaft and the transition of the periphery wall circular arc of motor shaft.
As described above, the utility model discloses a compressor rigid shaft connecting structure has following beneficial effect:
the utility model realizes connection through the first connecting part on the crankshaft and the second connecting part on the motor shaft, and compared with the prior structure, the utility model cancels the shaft coupling and the expansion sleeve, and reduces the number of parts; because the number of the installation parts is small, the accumulated error is small, and the small installation precision error is ensured; the operation labor intensity is low, and only 1-2 people are needed for completion; the working efficiency is high, and the time for installation is usually 3-5 hours; the utility model discloses simple structure, connection are reliable, need not to pass through the key-type connection to bent axle and motor shaft, have guaranteed bent axle and motor shaft's self performance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
fig. 2 is a schematic view of a part of the structure of the embodiment of the present invention (excluding the fastening assembly and the positioning member).
Description of reference numerals
1-a crankshaft; 11-a first connection; 111-a first groove; 112-a first connection hole; 2-a positioning element; 3-a nut; 4-a bolt; 5-motor shaft; 51-a second connection; 511-a second tank; 512-second connection hole.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Please refer to fig. 1 and fig. 2, the present invention provides a rigid shaft connecting structure of a compressor, including a crankshaft 1, a motor shaft 5 and a fastening assembly, wherein the connecting end of the crankshaft 1 has a first connecting portion 11, the connecting end of the motor shaft 5 has a second connecting portion 51, a positioning member 2 is disposed between the first connecting portion 11 and the second connecting portion 51, and the fastening assembly penetrates through the first connecting portion 11 and the second connecting portion 51 to connect the crankshaft 1 and the motor shaft 5.
Specifically, the crankshaft 1 and the motor shaft 5 are aligned in an end face through a first connecting part 11 and a second connecting part 51 at the ends of the crankshaft 1 and the motor shaft 5, and the first connecting part 11 and the second connecting part 51 are connected through a fastening assembly, so that the crankshaft 1 and the motor shaft 5 are connected, a coupler and an expansion sleeve are eliminated, and the number of parts is reduced (compared with the existing structure, the number of 4/9 is reduced); the crankshaft 1 and the motor shaft 5 are machined by a high-precision numerical control machine tool, the precision of parts is high, and because the number of the installed parts is small, the accumulated error is small, the integral installation precision error is reduced, and the connection reliability is ensured; the connecting structure is simple in connecting and assembling, and reduces the labor intensity of workers.
The first connecting portion 11 is integrally formed with the crankshaft 1, and the second connecting portion 51 is integrally formed with the motor shaft 5. With this configuration, the connection strength between the first connection portion 11 and the crankshaft 1 and the connection strength between the second connection portion 51 and the motor shaft 5 can be ensured, and the number of machining processes can be reduced.
In this embodiment, the first connection portion 11 and the second connection portion 51 are both disc-shaped. The structure is convenient for manufacturing and processing, and processing procedures are reduced.
Preferably, the first connecting portion 11 is flush with the outer edge of the second connecting portion 51, and the thicknesses of the first connecting portion 11 and the second connecting portion 51 are equal. That is, the outer edge of the first connecting portion 11 is equal to the outer edge of the second connecting portion 51, which is beneficial to improving the appearance of the whole structure and reducing the material consumption as much as possible.
In this embodiment, the positioning element 2 is annular, and the outer edge of the positioning element 2 is flush with the outer edges of the first connecting portion 11 and the second connecting portion 51. With such a structure, the outer edge shape of the positioning member 2 can be adapted to the outer edge shapes of the first connecting portion 11 and the second connecting portion 51, so that the overall structure is more attractive and the processing is facilitated.
The outer edge of one side end face, away from the crankshaft 1, of the first connecting portion 11 is circumferentially provided with a first groove 111, the outer edge of one side end face, away from the motor shaft 5, of the second connecting portion 51 is circumferentially provided with a second groove 511, and when the crankshaft 1 is connected with the motor shaft 5, the positioning member 2 is pressed in an accommodating space formed by the first groove 111 and the second groove 511. By arranging the positioning piece 2, a gap is ensured between the end faces of the first connecting part 11 and the second connecting part 51, and the direct contact between the crankshaft 1 and the motor shaft 5 is avoided. In this embodiment, since the positioning element 2 is annular, the inner ring of the positioning element 2 is clamped on the inner walls of the first groove 111 and the second groove 511, and the outer ring of the positioning element 2 is flush with the outer edges of the first connecting portion 11 and the second connecting portion 51. The positioning piece 2 is made of carbon steel.
The thickness of the positioning member 2 is greater than the sum of the depth of the first groove 111 and the depth of the second groove 511. With this structure, a gap can be ensured between the end faces of the first connection portion 11 and the second connection portion 51 that are butted against each other.
In this embodiment, a plurality of first connecting holes 112 that run through are evenly distributed along circumference on the first connecting portion 11, a plurality of second connecting holes 512 that run through are provided along the equipartition on the second connecting portion 51, a plurality of third connecting holes that run through are provided along the equipartition on the setting element 2, when bent axle 1 is connected with motor shaft 5, first connecting hole 112, second connecting hole 512 and third connecting hole are aimed at one by one, first connecting hole 112, second connecting hole 512 and third connecting hole pass through the fastening component connects. Preferably, the number of the first connecting holes 112, the second connecting holes 512 and the third connecting holes is even, and the first connecting holes, the second connecting holes and the third connecting holes are uniformly distributed along the circumferential direction.
The fastening assembly comprises a bolt 4 and a nut 3, and the head of the bolt 4 is arranged in the forward and reverse directions at intervals along the circumferential direction of the first connecting part 11 or the second connecting part 51. Specifically, the number of all the fastening assemblies is even, and the heads of the bolts 4 of one half of the number of bolts 4 are opposite to the heads of the bolts 4 of the other half of the number of bolts 4, that is, the heads of the bolts 4 of one half of the number of bolts 4 are opposite to the crankshaft 1, the heads of the bolts 4 of the other half of the number of bolts 4 are opposite to the motor shaft 5, and the heads of the bolts 4 are spaced apart from each other. The structure ensures that the pre-tightening of the fastening assembly is more reliable and balances the pre-tightening force in two directions.
In addition, one end surface of the first connecting part 11 close to the crankshaft 1 is in arc transition with the outer peripheral wall of the crankshaft 1, and one end surface of the second connecting part 51 close to the motor shaft 5 is in arc transition with the outer peripheral wall of the motor shaft 5. With such a structure, the connection between the first connection part 11 and the crankshaft 1 and the connection between the second connection part 51 and the motor shaft 5 are ensured to be smooth in transition, and are not easy to break.
In summary, in the rigid shaft connecting structure of the compressor provided by the embodiment of the present invention, the first connecting portion on the crankshaft and the second connecting portion on the motor shaft are connected, so that the shaft coupling and the expansion sleeve are eliminated, and the number of parts is reduced compared with the conventional structure; because the number of the installation parts is small, the accumulated error is small, and the small installation precision error is ensured; the operation labor intensity is low, and only 1-2 people are needed for completion; the working efficiency is high, and the time for installation is usually 3-5 hours; the utility model discloses simple structure, connection are reliable, need not to pass through the key-type connection to bent axle and motor shaft, have guaranteed bent axle and motor shaft's self performance.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A compressor rigid shaft connecting structure is characterized in that: including bent axle, motor shaft and fastening components, the link of bent axle has first connecting portion, the link of motor shaft has the second connecting portion, be provided with the setting element between first connecting portion and the second connecting portion, run through first connecting portion and second connecting portion so that bent axle and motor shaft are connected through fastening components.
2. A compressor rigid shaft connection structure as defined in claim 1, wherein: the first connecting portion and the bent axle integrated into one piece, the second connecting portion and motor shaft integrated into one piece.
3. A compressor rigid shaft connecting structure according to claim 1 or 2, characterized in that: the first connecting portion and the second connecting portion are disc-shaped.
4. A compressor rigid shaft connecting structure according to claim 1 or 2, characterized in that: the outer edges of the first connecting portion and the second connecting portion are flush, and the thicknesses of the first connecting portion and the second connecting portion are equal.
5. A compressor rigid shaft connection structure as defined in claim 4 wherein: the positioning piece is in a ring shape, and the outer edge of the positioning piece is flush with the outer edges of the first connecting portion and the second connecting portion.
6. A compressor rigid shaft connection structure as defined in claim 1, wherein: the first groove is formed in the outer edge of the end face, far away from the crankshaft, of one side in the circumferential direction, the second groove is formed in the outer edge of the end face, far away from the motor shaft, of one side in the circumferential direction, of the second connecting portion, and when the crankshaft is connected with the motor shaft, the positioning piece is pressed in the accommodating space formed by the first groove and the second groove.
7. A compressor rigid shaft connection structure as defined in claim 6 wherein: the thickness of the positioning piece is larger than the sum of the depth of the first groove and the depth of the second groove.
8. A compressor rigid shaft connection structure as defined in claim 6 wherein: the utility model discloses a fastening subassembly, including first connecting portion, second connecting portion, bent axle, first connecting portion, second connecting portion, setting element, first connecting hole, second connecting hole and third connecting hole, there are a plurality of first connecting holes that run through along the circumference equipartition on the first connecting portion, there are a plurality of second connecting holes that run through along the circumference equipartition on the second connecting portion, there are a plurality of third connecting holes that run through along the circumference equipartition on the setting element, when the bent axle is connected with the motor shaft, first connecting hole, second connecting hole and third connecting hole are aimed at one by one, first connecting hole, second connecting hole and third connecting hole pass through the fastening subassembly is connected.
9. A compressor rigid shaft connection structure as defined in claim 8 wherein: the fastening assembly comprises a bolt and a nut, and the bolt head of the bolt faces to the first connecting portion or the second connecting portion and is arranged in the forward and reverse directions at intervals in the circumferential direction.
10. A compressor rigid shaft connection structure as defined in claim 1, wherein: the first connecting portion are close to one side end face of bent axle and the transition of the periphery wall circular arc of bent axle, the second connecting portion are close to one side end face of motor shaft and the transition of the periphery wall circular arc of motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022836925.3U CN214196586U (en) | 2020-12-01 | 2020-12-01 | Rigid shaft connecting structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022836925.3U CN214196586U (en) | 2020-12-01 | 2020-12-01 | Rigid shaft connecting structure of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214196586U true CN214196586U (en) | 2021-09-14 |
Family
ID=77648688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022836925.3U Active CN214196586U (en) | 2020-12-01 | 2020-12-01 | Rigid shaft connecting structure of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214196586U (en) |
-
2020
- 2020-12-01 CN CN202022836925.3U patent/CN214196586U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103056687B (en) | Benchmark repair clamp for vane | |
| CN106078271A (en) | One can pinpoint orbiter structure and frock clamp thereof | |
| CN214196586U (en) | Rigid shaft connecting structure of compressor | |
| CN100369708C (en) | Positioning and clamping method for processing piston and processing technique | |
| CN112453507A (en) | Modular drilling machining tool | |
| CN114226896B (en) | Positioning and clamping fixture for arc-shaped parts | |
| CN214274266U (en) | Bearing box body structure | |
| CN214237921U (en) | Auxiliary tool for workpiece assembly | |
| CN214021538U (en) | Steel piston coating tool | |
| CN111120260B (en) | Machining method of double-support frame, double-support frame and piston compressor | |
| CN112453506A (en) | Drilling machining tool | |
| CN112677084B (en) | Clamp capable of realizing rapid and accurate assembly of high-pressure combined rotor of aero-engine | |
| CN219094797U (en) | Spline shaft sleeve grinding clamp | |
| CN214393252U (en) | Turning multi-section gland sealing arc section clamping tool | |
| CN212508813U (en) | Water ring vacuum pump | |
| CN220389077U (en) | Polishing sheet fixing device of electric polishing tool | |
| CN219054438U (en) | Balance cylinder and robot | |
| CN211304832U (en) | Pitch circle clamp for gear hot post-processing | |
| CN208619308U (en) | Cylinder body and compressor comprising it | |
| CN218439732U (en) | Integral plunger sleeve split mounting structure | |
| CN220838865U (en) | Quick assembly device for valve core steel wire check ring | |
| CN219986439U (en) | Jacking column of gear honing processing positioning tool | |
| CN216543091U (en) | Rapid assembly tool for antifriction gasket | |
| CN210998482U (en) | Bent front oil blanket frock of accurate location pressure equipment | |
| CN220881479U (en) | Pump body drilling tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |