CN205744434U - A kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism - Google Patents
A kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism Download PDFInfo
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- CN205744434U CN205744434U CN201620587184.0U CN201620587184U CN205744434U CN 205744434 U CN205744434 U CN 205744434U CN 201620587184 U CN201620587184 U CN 201620587184U CN 205744434 U CN205744434 U CN 205744434U
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Abstract
This utility model relates to a kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism, including rotor (1), dummy shaft (2) and alignment pin (3), rotor (1) end is connected with dummy shaft (2) front end, interference fit is used to couple between rotor (1) with dummy shaft (2), rotor (1) and dummy shaft (2) place of being connected are provided with alignment pin (3), rotor (1), dummy shaft (2) passes through interference fit joint, alignment pin (3) is connected as one, alignment pin (3) is provided with multiple, multiple alignment pins (3) are arranged symmetrically with along the dislocation of interference fit joint section circumference；This utility model is able to maintain that former rotor structure, on rotor height pressure side bearing life without impact, only need special processing dummy shaft, use interference fit joint as mainly transmitting control feel simulator, recycling alignment pin auxiliary transmission load as Strengthening Design, assembling is simple, it is greatly improved packaging efficiency and Compressor Group efficiency, and effectively improves the complete machine oscillation of compressor.
Description
[technical field]
This utility model relates to helical-lobe compressor technical field, specifically a kind of semi-closed screw type compressor cantilever
Shaft coupling anti-loosing mechanism.
[background technology]
Helical-lobe compressor can be divided into open-type, semi-enclosed by compressor and the connecting mode of motor.Wherein open-type spiral shell
Bar compressor is to be coupled with motor by compressor by shaft coupling, and rotor stretches out compressor, uses mechanical seal, prevents cold-producing medium
Leakage with lubricating oil；Semi-closed screw type compressor is the design of built-in motor structure, commonly used cantilever design, i.e. male rotor
Directly couple with motor, cantilever design simple in construction, operate stable, reliable, be directly driven by a motor male rotor, it is not necessary to increase volume
Outside gear mechanism.
Open-type helical-lobe compressor is less in field of central air-conditioning application at present, mainly considers the sealing problem at axle envelope
Cannot solve, for client, the maintenance cost in later stage is bigger at all.At present, open-type helical-lobe compressor is mainly used in
The freezing field of industry, required refrigerating capacity is relatively big, corresponding large-scale helical-lobe compressor, and also needs to when being normally applied configure oil pump system
System and oil cooling system.When semi-enclosed be applied to large-scale helical-lobe compressor time, because electric machine iron core length is long, as continue use
Cantilever design, then the part of male rotor suspension motor needs correspondence to lengthen, i.e. male rotor entire length needs corresponding lengthening.But row at present
Rotor machining machine in the industry can the length of processing rotor be typically all fixing, and machinable rotor length is generally 1200mm.
Along with the development in market, client is increasing to the demand of larger helical-lobe compressor, semi-enclosed own
Than open-type, there is multiple advantage, such as: shaftless envelope leakage problem, later maintenance cost are relatively low, without other equipment investments extra
Deng.Especially for high voltage big screw rod market, such as 6000V, 10000V high voltage, will there be higher efficiency and economic effect
Benefit.How to efficiently solve semi-enclosed long bolt, the processing problems of speciality screw rod, it has also become each big refrigerating and air conditioning unit manufacturer
The a great problem faced with Compressor Manufacturing manufacturer.
If enterprise puts into new rotor machining machine again, then cost is the highest, and an external imported rotors processing machine price is big
General at about 20,000,000 yuan, in industry the most more typically for using dummy shaft design, the position i.e. coupled with motor at former rotor
Increase by one section of dummy shaft, be effective connection by certain shaft coupling mode.Current existing dummy shaft is designed as using synchromesh gear
Coupler structure designs, and this structure is designed as a newly-increased motor transmission shaft as dummy shaft, utilizes a pair synchromesh gear as connection
Axial organ, it is achieved rotor and the transmission of motor.
Coupler structure design bearing capacity is big, reliable operation, but synchromesh gear manufactures difficulty, need to have good during work
Lubrication, and need the structure designs such as supporting newly-increased dummy shaft front and back bearings, middle bracket, relatively costly.Assembly difficulty is relatively big, synchromesh gear
Itself being i.e. vibration source, there is bigger accumulative processing, rigging error in compressor, motor, dummy shaft rear end bearing, cause rotor,
Dummy shaft, particularly dummy shaft rear end bearing coaxiality error increase, and certainly will cause electricity when being applied to semi-enclosed helical-lobe compressor
Machine operating beat is excessive, causes bearing abnormal sound, vibration of compressor to deteriorate, and bearing life reduces.Further, middle bracket bearing lubrication institute
The refrigeration oil needed accumulates in motor casing, eventually returns to vaporizer along with the Liquid injection cooling of motor, and longtime running will make evaporation
The heat exchange efficiency of device reduces, and will have a strong impact on the efficiency of compressor complete set unit.
Therefore, can be seen that coupler structure design is applied to semi-enclosed helical-lobe compressor and also exists necessarily from above analysis
Shortcomings and deficiencies: structure is complicated, assembling difficulty, bearing life reduce, affect vibration of compressor and efficiency etc..
[utility model content]
The purpose of this utility model seeks to solve above-mentioned deficiency and provides a kind of semi-closed screw type compressor cantilever
Shaft coupling anti-loosing mechanism, simple in construction, reliable, cost is relatively low, and assembling is simple, is greatly improved packaging efficiency and the energy of compressor
Effect, improves the vibration of compressor.
A kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism of design for achieving the above object, including rotor 1,
Dummy shaft 2 and alignment pin 3, described rotor 1 end is connected with dummy shaft 2 front end, uses interference fit between described rotor 1 and dummy shaft 2
Coupling, described rotor 1 and dummy shaft 2 place of being connected are provided with alignment pin 3, and described rotor 1, dummy shaft 2 are by interference fit joint and with fixed
Position pin 3 is connected as one.
Described rotor 1 includes high pressure section 4, rotor body 5, low pressure stage 6 and interference fit joint section 7, described high pressure section 4, rotor
Body 5, low pressure stage 6, interference fit joint section 7 couple the most successively, and the structure that is formed in one.
Described dummy shaft 2 front end is provided with endoporus 8, and the internal diameter of described endoporus 8 matches with the external diameter of rotor 1 interference fit joint section 7,
Interference fit joint between described endoporus 8 and interference fit joint section 7.
The front end face of described rotor 1 high pressure section 4 is provided with rotor fixed position hole 9, and it is fixed that described dummy shaft 2 rear end face is provided with dummy shaft
Hole 10, position.
Being provided with alignment pin installing hole at described interference fit joint section 7, dummy shaft 2 endoporus 8, described alignment pin 3 is installed on alignment pin
In installing hole.
Described alignment pin 3 is provided with multiple, and multiple described alignment pins 3 are arranged symmetrically with along the dislocation of interference fit joint section 7 circumference.
Described alignment pin 3 periphery is preset with packing groove, is provided with built-up welding filler 11 in described packing groove.
Described built-up welding filler 11 degree of depth is 2-3mm.
This utility model compared with the existing technology, has the advantage that
(1) simple in construction, reliable: this utility model maintains former rotor structure, to rotor height pressure side bearing life
Without impact, it is only necessary to special processing dummy shaft, use interference fit joint as mainly transmitting control feel simulator, recycling alignment pin auxiliary
Transmission load is as Strengthening Design；
(2) cost is relatively low: this utility model designs only with dummy shaft, and contrast synchromesh gear coupling design can save gear
Shaft coupling, bearing etc., cost can be greatly reduced；
(3) assembling is simple, improved efficiency: contrast synchromesh gear coupling design assembling complexity, and centering difficulty, and this reality
Then maintaining cantilever design design with novel, assemble method, mode are without changing；
(4) compressor efficiency promotes, vibration of compressor improves: this utility model maintains former rotor structure precision constant, can
Realizing higher beat precision, less to the vibration effect of complete machine, contrast synchromesh gear coupler structure design, because of many one group
Gear, bearing, then gear is as vibration source, the vibration making compressor is strengthened, and needs sufficiently lubrication during working gear,
Then needing individually to gear fuel feeding, the oil of lubrication returns to vaporizer with cold-producing medium, will affect the energy of compressor cooling unit
Effect.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of this utility model rotor；
Fig. 3 is the structural representation of dummy shaft in this utility model；
Fig. 4 is the partial structurtes schematic diagram in this utility model at alignment pin；
In figure: 1, rotor 2, dummy shaft 3, alignment pin 4, high pressure section 5, rotor body 6, low pressure stage 7, interference fit joint section
8, endoporus 9, rotor fixed position hole 10, dummy shaft location hole 11, built-up welding filler.
[detailed description of the invention]
Below in conjunction with the accompanying drawings this utility model is made further explained below:
As shown in drawings, this utility model includes: rotor 1, dummy shaft 2 and alignment pin 3, rotor 1 end and dummy shaft 2 front end phase
Even, using interference fit to couple between rotor 1 with dummy shaft 2, rotor 1 and dummy shaft 2 place of being connected are provided with alignment pin 3, rotor 1,
Dummy shaft 2 by interference fit joint and is connected as one with alignment pin 3.Wherein, alignment pin 3 is provided with multiple, and multiple alignment pin 3 is along mistake
Connecting section 7 circumference that is full of dislocation is arranged symmetrically with.Rotor 1 includes high pressure section 4, rotor body 5, low pressure stage 6 and interference fit joint section 7, high
Pressure section 4, rotor body 5, low pressure stage 6, interference fit joint section 7 couple the most successively, and the structure that is formed in one, before dummy shaft 2
End is provided with endoporus 8, and the internal diameter of endoporus 8 matches with the external diameter of rotor 1 interference fit joint section 7, between endoporus 8 and interference fit joint section 7
Interference fit joint, the front end face of rotor 1 high pressure section 4 is provided with rotor fixed position hole 9, and dummy shaft 2 rear end face is provided with hole 10, dummy shaft location.
Being provided with alignment pin installing hole at interference fit joint section 7, dummy shaft 2 endoporus 8, alignment pin 3 is installed in alignment pin installing hole, alignment pin 3
Periphery is preset with packing groove, is provided with built-up welding filler 11 in packing groove, and built-up welding filler 11 degree of depth is 2-3mm.
This utility model is in the case of cantilever design design basis is constant, it is provided that a kind of simple, reliable, low cost
Shaft coupling design structure, it is possible to bear motor torque and axial force, it is ensured that safe and reliable when running up simultaneously, and ensure that
Rotor couple with dummy shaft after the beat precision of integral assembly, in order to avoid beat is excessive causes that motor is fixed, gap, transfer part is uneven, produce different
The problems such as sound, vibration are big.Wherein, rotor is the main drive rod that helical-lobe compressor couples with motor；Dummy shaft is when rotor is because of rotor
Processing machine can processing length deficiency time, i.e. during rotor length deficiency, the end that need to couple with motor at rotor increases dummy shaft design,
Key connecting is passed through by dummy shaft and motor；Alignment pin is auxiliary reinforcement, anti-loose design.Its operation principle is: rotor is adopted with dummy shaft
By interference fit joint, as being primarily subjected to the structure of motor torque and axial force, then impose the dislocation of alignment pin circumference and arrange, as auxiliary
Help Strengthening Design.
The speciality rotor that rotor machining machine cannot be processed by this utility model is divided into rotor, dummy shaft two sections, and one section of rotor can
With normal process on rotor machining machine, i.e. maintaining the machining accuracy of former rotor, another section uses dummy shaft design to utilize interference to join
Connect and realize and the shaft coupling of one section of rotor, and interference fit joint section utilize alignment pin as auxiliary Strengthening Design, then by after shaft coupling
The vertical upper grinding machine fine grinding dummy shaft cylindrical of group, makes up to higher precision.Specific as follows:
(1) former rotor structure and machining accuracy are maintained；Rotor is first integrally machined molding on rotor machining machine, it is ensured that relatively
High precision；High pressure section, low pressure stage, the entirety of interference fit joint section benchmark are beated within can reach 0.005mm；According to interference fit joint
Calculate the required magnitude of interference, combine diameter, length etc.；Using rotor as the internal member of interference fit joint, exist in advance
End car goes out interference fit joint axle, in conjunction with diameter and length.
(2) preparing dummy shaft, as a example by material is as 45#, dummy shaft, as the external member of interference fit joint, first carries out modifier treatment,
Going up lathe again and process the dummy shaft length of design requirement, diameter stays material processing, and according to Theoretical Calculation data, processes dummy shaft interference
Couple endoporus, combine diameter and length.
(3) rotor uses horizontal interference fit joint method, i.e. temperature differential method with the interference fit joint of dummy shaft；External member dummy shaft is carried out
Heating, heating-up temperature calculates gained according to the design requirement magnitude of interference, and after hot charging completes, room temperature cools down more than 24h, to eliminate deformation
And stress.
(4) the vertical upper lathe of group, one end grip roll high pressure section axle journal, one end uses copper bracing frame to fix low pressure stage axle journal,
Re-calibrate high pressure section benchmark, the overall circle of low pressure stage benchmark is beated, and the circle stood through repeatedly correcting guarantee group is beated and reached
The accuracy rating of 0.01mm, then hole, processing dummy shaft location.The processing that the purpose of this step is because former rotor rear and front end is fixed
Hole, position is to be integrally machined molding on rotor machining machine, and its precision is higher, after utilizing interference fit joint to be stood with dummy shaft group by rotor,
The locating and machining hole of its rotor low pressure stage is covered by dummy shaft, needs again in the vertical part vacation the tip of the axis locating and machining hole of group, its group
Vertical circle precision of beating is unable to reach, by artificial correction, the precision that rotor machining machine is integrally machined, but it still can reach
0.01mm, is applied to large-scale semi-closed formula helical-lobe compressor, and it has reached higher precision level.
(5) the vertical upper machining center of group, locating and machining pin-and-hole so that it is be arranged symmetrically with along the dislocation of interference fit joint section circumference, insert
Alignment pin, alignment pin processes as auxiliary Strengthening Design, the anti-loose built-up welding filler that is designed with of itself, and the filler degree of depth is 2-
3mm。
(6) the vertical upper lathe of group, finish turning dummy shaft cylindrical, and stay material 0.2mm.
(7) group founds upper grinding machine again, and fine grinding dummy shaft cylindrical is to design size.
(8) other conventional machinings can be carried out, such as car keyway, auger shell pit etc. after group vertical fine grinding dummy shaft cylindrical.
This utility model is not limited by above-mentioned embodiment, other any real without departing from spirit of the present utility model
The change made under matter and principle, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in this practicality
Within novel protection domain.
Claims (8)
1. a semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism, it is characterised in that: include rotor (1), dummy shaft (2)
And alignment pin (3), described rotor (1) end is connected with dummy shaft (2) front end, uses interference between described rotor (1) and dummy shaft (2)
Coordinating and couple, described rotor (1) and dummy shaft (2) place of being connected are provided with alignment pin (3), and described rotor (1), dummy shaft (2) pass through
Interference fit joint is also connected as one with alignment pin (3).
2. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 1, it is characterised in that: described turn
Son (1) includes high pressure section (4), rotor body (5), low pressure stage (6) and interference fit joint section (7), and described high pressure section (4), rotor are originally
Body (5), low pressure stage (6), interference fit joint section (7) couple the most successively, and the structure that is formed in one.
3. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 2, it is characterised in that: described vacation
Axle (2) front end is provided with endoporus (8), and the internal diameter of described endoporus (8) matches with the external diameter of rotor (1) interference fit joint section (7), described
Interference fit joint between endoporus (8) and interference fit joint section (7).
4. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 3, it is characterised in that: described turn
The front end face of son (1) high pressure section (4) is provided with rotor fixed position hole (9), and described dummy shaft (2) rear end face is provided with hole, dummy shaft location
(10)。
5. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 4, it is characterised in that: described mistake
Being full of connecting section (7), dummy shaft (2) endoporus (8) place is provided with alignment pin installing hole, and described alignment pin (3) is installed on alignment pin installing hole
In.
6. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 5, it is characterised in that: described fixed
Position pin (3) is provided with multiple, and multiple described alignment pins (3) are arranged symmetrically with along the dislocation of interference fit joint section (7) circumference.
7. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 6, it is characterised in that: described fixed
Pin (3) periphery, position is preset with packing groove, is provided with built-up welding filler (11) in described packing groove.
8. semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism as claimed in claim 7, it is characterised in that: described heap
Weldering filler (11) degree of depth is 2-3mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620587184.0U CN205744434U (en) | 2016-06-16 | 2016-06-16 | A kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism |
| TW106206286U TWM552542U (en) | 2016-06-16 | 2017-05-04 | Anti-loose mechanism of cantilever shaft of semi-enclosed screw type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620587184.0U CN205744434U (en) | 2016-06-16 | 2016-06-16 | A kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744434U true CN205744434U (en) | 2016-11-30 |
Family
ID=57386145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620587184.0U Active CN205744434U (en) | 2016-06-16 | 2016-06-16 | A kind of semi-closed screw type compressor cantilever shaft coupling anti-loosing mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN205744434U (en) |
| TW (1) | TWM552542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606131A (en) * | 2021-08-23 | 2021-11-05 | 兑通真空技术(上海)有限公司 | Cantilever connecting structure for roots pump or screw pump |
-
2016
- 2016-06-16 CN CN201620587184.0U patent/CN205744434U/en active Active
-
2017
- 2017-05-04 TW TW106206286U patent/TWM552542U/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606131A (en) * | 2021-08-23 | 2021-11-05 | 兑通真空技术(上海)有限公司 | Cantilever connecting structure for roots pump or screw pump |
| CN113606131B (en) * | 2021-08-23 | 2023-08-25 | 兑通真空技术(上海)有限公司 | Cantilever connection structure for Roots pump or screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM552542U (en) | 2017-12-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |