CN208364586U - A kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft - Google Patents
A kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft Download PDFInfo
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- CN208364586U CN208364586U CN201820737955.9U CN201820737955U CN208364586U CN 208364586 U CN208364586 U CN 208364586U CN 201820737955 U CN201820737955 U CN 201820737955U CN 208364586 U CN208364586 U CN 208364586U
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- main shaft
- axle
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- axis
- parallel connection
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- 210000001331 nose Anatomy 0.000 claims abstract description 42
- 210000003128 head Anatomy 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft, it is related to Pump Shaft field, and in particular to a kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft.No.1 spindle nose, No.1 axle journal, short axle body, No. two spindle noses, long axle body, No. two axle journals are sequentially connected from left to right；The surface of No. two spindle noses is provided with axis platform rank, axis platform component level is on the right side of No. two spindle noses, close to the junction of No. two spindle noses and long axle body；Be provided with set step inside the stairstepping axle sleeve, cover step setting position and size and axis platform rank it is corresponding, stairstepping axle sleeve covers on No. two spindle noses, and No.1 spindle nose, short axle body, long axis are all provided with keyway with it, and keyway is all in the same horizontal line.After adopting the above technical scheme, the utility model, which has the beneficial effect that, both reduces main shaft cost, the precision and high reliability of positioning are in turn ensured.
Description
Technical field
The utility model relates to be related to Pump Shaft field, and in particular to a kind of low cost high position precision parallel connection self-balancing
Centrifugal multistage pump multiple centrifugal pump main shaft.
Background technique
Axis is the cylindrical object being through among bearing or among wheel or among gear, but also having is partially square
's.Axis is support rotary part and is turned round therewith with the machine components of passing movement, torque or moment of flexure.Generally round metal
Rod-shaped, each section can have different diameters, and the part for making rotary motion in machine is just mounted on axis.
Common axis can be divided into crankshaft according to the planform of axis, d-axis, flexible axle, solid shafting, hollow shaft, stiff shaft, scratch
Property axis (flexible axle).D-axis can be divided into again: 1. shaft, and it is the most common axis in machinery that when work, which had not only born moment of flexure but also born torque,
Axis in such as various retarders.2. mandrel is solely subjected to moment of flexure for support rotary part and turns without transmitting torque, some mandrels
It moves, such as the axis of rolling stock, some mandrels do not rotate then, such as the axis of supporting pulley.3. transmission shaft is mainly used to transmitting and turns round
Square and be not subject to moment of flexure, such as the drive shaft of long optical axis, automobile in crane mobile mechanism.The material of axis mainly uses carbon
Spheroidal graphite cast-iron or alloy cast iron etc. can also be used in steel or steel alloy.The ability to work of axis is generally dependent on strength and stiffness, revolving speed
Stability of vibration is additionally depended on when high
Multistage pump main shaft is elongated shaft, flexible axle.To main shaft, impeller, bearing interstage sleeve, axle sleeve, balancing frame, restrictor sleeve etc.
The dimensional tolerance of part, Geometrical Tolerance Principle are very high.Rotor part jitter values are smaller, pump precision it is higher, pump operating it is more stable,
Reliability is higher.Therefore multistage pump spindle design is Step Shaft, the cumulative errors of the cover parts such as impeller on rotor can be influenced
It is minimized from structure.
There are two types of common main axle structures: structure (one): main shaft raw material are bar, because axis is Step Shaft, axis material diameter
Greatly, machining period is long, and waste is serious, and main shaft is at high cost；Structure (two): axis material diameter is smaller than structure (one), cost of raw material ratio
Structure (one) is low, axis platform rank external pressure axle sleeve, then is processed, when the magnitude of interference of axle sleeve and axis is small, or pump axial force is big, axle sleeve
It will appear relative movement with axis, destroy the original precision of main shaft, positioning accuracy is not so good as structure (one), and reliability is not so good as structure
(1).
Utility model content
The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, a kind of inexpensive high position precision is provided
Self-balanced multiple-stage centrifugal pump main shaft in parallel, it combines two kinds of main shaft advantage, reduces main shaft cost, and ensure that
Positioning accuracy and high reliability.
To achieve the above object, the utility model is using following technical scheme: it includes stepped main shaft 1, stairstepping
Axle sleeve 2, the stepped main shaft 1 includes: No.1 spindle nose 11, No.1 axle journal 12, short axle body 13, No. two spindle noses 14, long axle bodies
15, No. two axle journals 16, axis platform rank 17, keyway 18, No.1 spindle nose 11, No.1 axle journal 12, short axle body 13, No. two spindle noses 14, long axis
15, No. two axle journals 16 of body are sequentially connected from left to right；The surface of No. two spindle noses 14 is provided with axis platform rank 17, axis platform rank 17 is located at
No. two 14 right sides of spindle nose, close to the junction of No. two spindle noses 14 and long axle body 15；Set platform is provided with inside the stairstepping axle sleeve 2
Rank 21, the setting position for covering step 21 is corresponding with the setting position size of size and axis platform rank 17, and 2 sets of stairstepping axle sleeve two
On number spindle nose 14, No.1 spindle nose 11, short axle body 13 are all provided with keyway 18 on long axle body 15, and keyway 18 is all in the same horizontal line.
The stepped main shaft 1 is structure as a whole.
The No.1 spindle nose 11,12 left side of No.1 axle journal are all provided with chamfering 3, and No. two 16 right sides of axle journal are also provided with down
Angle 3.
The stepped main shaft 1 is cylindrical structure.
Working principle of the utility model is: when axial force is directed toward No. two journal ends by No.1 spindle nose end, stairstepping axle sleeve
Stress is transmitted on main shaft；When axial force is directed toward No.1 spindle nose end by No. two journal ends, main shaft step is stressed directly, main shaft with
Relative displacement will not occur for stairstepping axle sleeve.
After adopting the above technical scheme, the utility model, which has the beneficial effect that, both reduces main shaft cost, positioning is in turn ensured
Precision and high reliability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Description of symbols: stepped main shaft 1, stairstepping axle sleeve 2, foot 3, No.1 spindle nose 11, No.1 axle journal 12, short axle
13, No. two spindle noses 14 of body, 15, No. two axle journals 16 of long axle body, axis platform rank 17, keyway 18, set step 21.
Specific embodiment
Referring to shown in Fig. 1, present embodiment the technical solution adopted is that: it includes stepped main shaft 1, stairstepping axis
Set 2, the stepped main shaft 1 includes: No.1 spindle nose 11, No.1 axle journal 12,13, No. two spindle noses 14 of short axle body, long axle body 15,
No. two axle journals 16, axis platform rank 17, keyway 18, No.1 spindle nose 11, No.1 axle journal 12, short axle body 13, No. two spindle noses 14, long axle bodies
15, No. two axle journals 16 are sequentially connected from left to right；The surface of No. two spindle noses 14 is provided with axis platform rank 17, axis platform rank 17 is located at two
14 right side of number spindle nose, close to the junction of No. two spindle noses 14 and long axle body 15；Set step is provided with inside the stairstepping axle sleeve 2
21, the setting position for covering step 21 is corresponding with the setting position size of size and axis platform rank 17, and 2 sets of stairstepping axle sleeve at No. two
On spindle nose 14, No.1 spindle nose 11, short axle body 13 are all provided with keyway 18 on long axle body 15, and keyway 18 is all in the same horizontal line.
The stepped main shaft 1 is structure as a whole.
The No.1 spindle nose 11,12 left side of No.1 axle journal are all provided with chamfering 3, and No. two 16 right sides of axle journal are also provided with down
Angle 3.
The stepped main shaft 1 is cylindrical structure.
Stepped main shaft 1, stepped axle sleeve 2 are first processed respectively, then stepped 2 hot pressing of axle sleeve is entered into stepped main shaft 1,
Semifinishing, heat treatment, finishing are carried out together.
Working principle of the utility model is: when axial force is directed toward No. two journal ends by No.1 spindle nose end, stairstepping axle sleeve
Stress is transmitted on main shaft；When axial force is directed toward No.1 spindle nose end by No. two journal ends, main shaft step is stressed directly, main shaft with
Relative displacement will not occur for stairstepping axle sleeve.
After adopting the above technical scheme, the utility model, which has the beneficial effect that, both reduces main shaft cost, positioning is in turn ensured
Precision and high reliability.
The above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple
The other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model
Spirit and scope should all cover in the scope of the claims of the utility model.
Claims (4)
1. a kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft, it is characterised in that: it includes stepped main
Axis (1), stairstepping axle sleeve (2), the stepped main shaft (1) includes: No.1 spindle nose (11), No.1 axle journal (12), short axle body
(13), No. two spindle noses (14), long axle body (15), No. two axle journals (16), axis platform rank (17), keyway (18), No.1 spindle nose (11), one
Number axle journal (12), short axle body (13), No. two spindle noses (14), long axle body (15), No. two axle journals (16) are sequentially connected from left to right；?
The surface of No. two spindle noses (14) is provided with axis platform rank (17), and axis platform rank (17) is located on the right side of No. two spindle noses (14), close to No. two axis
The junction of head (14) and long axle body (15)；Set step (21) is provided with inside the stairstepping axle sleeve (2), set step (21)
It is corresponding with the setting position size of size and axis platform rank (17) that position is set, stairstepping axle sleeve (2) is covered in No. two spindle noses (14)
On, No.1 spindle nose (11), short axle body (13) are all provided with keyway (18) on long axle body (15), and keyway (18) is all in same horizontal line
On.
2. a kind of inexpensive high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft according to claim 1, feature
Be: the stepped main shaft (1) is structure as a whole.
3. a kind of inexpensive high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft according to claim 1, feature
Be: the No.1 spindle nose (11), No.1 axle journal (12) left side are all provided with chamfering (3), No. two axle journal (16) right sides
It is provided with chamfering (3).
4. a kind of inexpensive high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft according to claim 1, feature
Be: the stepped main shaft (1) is cylindrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820737955.9U CN208364586U (en) | 2018-05-17 | 2018-05-17 | A kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820737955.9U CN208364586U (en) | 2018-05-17 | 2018-05-17 | A kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364586U true CN208364586U (en) | 2019-01-11 |
Family
ID=64935484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820737955.9U Active CN208364586U (en) | 2018-05-17 | 2018-05-17 | A kind of low cost high position precision parallel connection self-balanced multiple-stage centrifugal pump main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364586U (en) |
-
2018
- 2018-05-17 CN CN201820737955.9U patent/CN208364586U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A low cost and high positioning accuracy parallel self balancing multistage centrifugal pump spindle Effective date of registration: 20230315 Granted publication date: 20190111 Pledgee: Changsha Liuyang sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHANGSHA CANON GENERAL PUMPS CO.,LTD. Registration number: Y2023980035014 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20190111 Pledgee: Changsha Liuyang sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHANGSHA CANON GENERAL PUMPS CO.,LTD. Registration number: Y2023980035014 |