CN104002824A - Engine diesel generating set public base and design method thereof - Google Patents
Engine diesel generating set public base and design method thereof Download PDFInfo
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- CN104002824A CN104002824A CN201410229145.9A CN201410229145A CN104002824A CN 104002824 A CN104002824 A CN 104002824A CN 201410229145 A CN201410229145 A CN 201410229145A CN 104002824 A CN104002824 A CN 104002824A
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Abstract
The invention discloses an engine diesel generating set public base and a design method thereof. The design method is characterized in that a diesel generating set public base of a diesel generating set meets the relation that N= (Q+q)*g/T, M*Z/E*I is greater than or equal to sigma max and Z is larger than H-A-B-10 and is less than H-A-10, wherein the N is the number of a vibration isolator, the Q is the quality of a diesel generating set, the q is the quality of the public base, the g is the gravitational acceleration, the T is the rated load of the vibration isolator, the Z is the height value of a section of the public base, the E is the elastic inertia of the public base, the I is the inertia of the section of the public base, the M is the bending moment of the section of the public base, the sigma max is the maximum stress generated by the diesel generating set, the H is minimum height of the space for installing the diesel generating set of a haulage motor, the A is the height from an installing surface of a diesel base to a highest point of a diesel, and the B is the maximum compressing capacity of the vibration isolator. The engine diesel generating set public base and the design method thereof provided by the invention have the advantages that the vibration caused by a main engine set in operation is effectively reduced, the vibration of an engine cab is greatly reduced, an operation environment of the cab is improved, and the further reliable guarantee is provided for the stable operation of the engine.
Description
Technical field
The present invention relates to a kind of locomotive diesel common base of generating set and method of designing thereof, belong to railway locomotive technical field.
Background technology
Diesel powerplant as diesel locomotive propulsion source is formed by diesel engine and generator combination, in order to reduce the vibration of unit, conventionally unit is arranged on the rigidity public base of bottom with some shock absorbers, forms an entirety.But owing to being subject to the restriction of car body arrangement space and Locomotive Axle Load, for all very large high-power diesel generating sets of quality and volume, the scheme of design engineers is given up public base often simply, directly diesel powerplant is placed on locomotive underframe, is rigidly connected with locomotive underframe.Although can adopt elastic vibration isolation design at driver's cab underframe, when locomotive operation, driver's cab still has compared with big bang, in locomotive, miscellaneous part also can, because the long-term vibration of diesel powerplant is damaged, have a strong impact on the reliability of locomotive simultaneously.
Summary of the invention
Object of the present invention overcomes the deficiency of above-mentioned prior art exactly, and a kind of locomotive diesel common base of generating set and method of designing thereof are provided.
The object of the present invention is achieved like this: a kind of locomotive diesel common base of generating set method of designing, it is characterized in that: meet N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10 decides each factor of locomotive diesel common base of generating set, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base cross section moment of flexure, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator.
A kind of locomotive diesel common base of generating set, it is characterized in that: its each factor meets N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base cross section moment of flexure, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator.
The solution of the present invention, provide to condition under, according to certain correlativity, system, reasonably select the construction parameter of locomotive diesel common base of generating set, the vibrations that actv. has caused while having reduced main unit operation, the vibrations of locomotive cab are reduced greatly, improved the working environment of driver's cab, for locomotive smooth operation provides further reliable guarantee.
Brief description of the drawings
Fig. 1 is the principle schematic of the embodiment of the present invention.
Fig. 2 is the I point enlarged diagram in Fig. 1.
In figure, be labeled as: 1-electrical generator, 2-diesel engine, 3-public base, 4-vibration isolator, 5-locomotive car body base plate.
Detailed description of the invention
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to accompanying drawing, the locomotive of the present embodiment is 4400 horsepower of 6 axle locomotive, and it is 23 × 9.8KN that the safety load-bearing of each axle requires, nearly 30 tons of its diesel powerplant quality, the quality of considering miscellaneous equipment on locomotive, the quality being assigned on public base can not be greater than 3.6 tons.Diesel engine base attachment face is 3210mm to diesel engine vertex height, and it is 3720mm that locomotive is installed diesel powerplant space minimum constructive height.
1, determine vibration isolator quantity N and position.
Using formula: N=(Q+q) × g/T
N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator.
Selecting rated load is 30KN vibration isolator,
N＝(Q+q)×g/T＝(30+3.6)×9.8/30＝10.97≈10
Because of 3.6 tons of biggest qualities that are public base permission, and vibration isolator quantity should be even number, still to choose vibration isolator quantity be 10.
The position of vibration isolator is according to the center of gravity of unit, and taking center of gravity as benchmark, both sides are similar to the equal location arrangements vibration isolator of moment, and the layout of vibration isolator is meeting under the prerequisite that relative center of gravity moment is equal in the larger location arrangements of public base stress as far as possible.
2, use the commercial software ANSYS12.1 of ANSYS company exploitation, be calculated as follows the effect of stress under several operating modes, public base being produced, i.e. the requirement of strength to public base.
(1) 1g vertical (constraint of vibration isolator lower end)
(2) 1g vertical+1.5g is just horizontal
(3) 1g vertical+1.5g is negative laterally
(4) 1g vertical+3g is just longitudinal
(5) 1g vertical+3g is negative longitudinally
(6) 2g is vertical
(7) 1g vertical+moment of torsion 33000*1.5N.m
(8) diesel engine assembling overview (1g is vertical for the constraint of base lower plane)
(9) integral lifting operating mode
Result of calculation is as following table:
Result of calculation shows: under 9 computational analysis operating modes, maximum stress ∑ max is 230MPa, and its safety factor is 1.5.Bent axle sail angle is 0.002284 degree, is less than the requirement of 0.0166 degree of permission.
3. determine the height of public base.
Diesel engine base attachment face is A=3210mm to diesel engine vertex height, and it is H=3720mm that locomotive is installed diesel powerplant space minimum constructive height.Select the maximum compressibility B=12mm of vibration isolator, the scope of the actual compression amount L of vibration isolator is 0 < L < B.In the time that vibration isolator reaches maximum compressibility, public base and locomotive car body ground connect mill when avoiding unit operation, require vibration isolator bottom surface attachment face and public base basal spacing to be at least 10mm, be that vibration isolator is arranged on public base, vibration isolator bottom surface attachment face, than at least low 10mm in public base bottom surface, therefore has following formula
H＝A+Z+(B-L)+10
Ensureing that public base quality is not more than under the prerequisite of 3.6 tons and H-A-B-10 < Z < H-A-10, choose different Z values, there are corresponding public base elasticity inertia E, cross section inertia I and cross section moment M, using formula M × Z/E × I=∑ carries out tentative calculation, draw the stress that different public base intensity can be born, therefrom selected suitable public base depth of section value.
By H=3720mm, A=3210mm, B=12mm substitution H-A-B-10 < Z < H-A-10, obtain 485mm < Z < 500mm.
Choose Z1=500mm, Z2=485mm, Z3=495mm, Z4=490mm, Z5=488mm, calculate respectively the stress that public base intensity can be born:
| Z(mm) | 500 | 485 | 495 | 490 | 488 |
| ∑(Mpa) | 265 | 223 | 246 | 235 | 230 |
Z=488mm is more rational public base height.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (2)
1. a locomotive diesel common base of generating set method of designing, it is characterized in that: meet N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10 decides each factor of locomotive diesel common base of generating set, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base cross section moment of flexure, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator.
2. a locomotive diesel common base of generating set, it is characterized in that: its each factor meets N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base cross section moment of flexure, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator.
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| CN201410229145.9A CN104002824B (en) | 2014-05-27 | 2014-05-27 | Locomotive diesel common base of generating set and method of designing thereof |
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| CN104002824B CN104002824B (en) | 2016-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107577848A (en) * | 2017-08-09 | 2018-01-12 | 中车大连机车车辆有限公司 | Locomotive diesel generating set vibration isolator installs auxiliary connection and design method |
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| CN202055915U (en) * | 2010-07-23 | 2011-11-30 | 广州威能机电有限公司 | Environmentally-friendly ultra-quiet type diesel generator set |
| CN202327538U (en) * | 2011-11-30 | 2012-07-11 | 重庆潍柴发动机厂 | Common base of generating set |
| CN203067086U (en) * | 2012-12-24 | 2013-07-17 | 中国船舶重工集团公司第七一一研究所 | Standby generator set for port and pier transient load low-noise energy storage |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202055915U (en) * | 2010-07-23 | 2011-11-30 | 广州威能机电有限公司 | Environmentally-friendly ultra-quiet type diesel generator set |
| CN202327538U (en) * | 2011-11-30 | 2012-07-11 | 重庆潍柴发动机厂 | Common base of generating set |
| CN203067086U (en) * | 2012-12-24 | 2013-07-17 | 中国船舶重工集团公司第七一一研究所 | Standby generator set for port and pier transient load low-noise energy storage |
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| 鲁琳: "某机车用柴油发电机组的隔振分析", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107577848A (en) * | 2017-08-09 | 2018-01-12 | 中车大连机车车辆有限公司 | Locomotive diesel generating set vibration isolator installs auxiliary connection and design method |
| CN107577848B (en) * | 2017-08-09 | 2020-11-17 | 中车大连机车车辆有限公司 | Locomotive diesel generator set vibration isolator mounting and connecting pair and design method |
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| CN104002824B (en) | 2016-04-27 |
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