Installation and connection pair and design method of vibration isolator for locomotive diesel generator set
A technology of diesel generator sets and vibration isolators, which is applied to transmission devices with reciprocating piston internal combustion engines, geometric CAD, sustainable transportation, etc., can solve the problem of adjusting gasket and bolt deformation, shearing and fatigue damage, and performance parameters that cannot be guaranteed and other problems to achieve the effect of eliminating deformation and reliable operation
Active Publication Date: 2020-11-17
CRRC DALIAN CO LTD
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Problems solved by technology
The size and material of each part of the connecting pair are selected based on experience, and there is no guarantee that the various performance parameters meet the operating requirements of the unit under various working conditions. Sometimes, the adjustment gaskets and bolts may even be deformed, sheared and fatigued. The stable and reliable operation brings great hidden dangers
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[0009] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0010] see figure 1 , The locomotive diesel generator set of this embodiment uses a vibration isolator for shock and noise reduction. Use the following formula to determine the installation and connection pair factors of the vibration isolator of the locomotive diesel generator set:
[0011] (mg+kyF cy )fcy )f+τSky ①
[0012]
[0013]
...
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The invention discloses a mounting connection pair for a vibration isolator of a locomotive diesel generating set and a design method. Each factor of the mounting connection pair of the vibration isolator is determined by satisfying a relation Formula as shown in the description; in the formula, m is diesel generating set mass, g is a gravitational acceleration, k is the number of connecting boltsof each vibration isolator, y is the number of vibration isolators, Fcy is residual pre-tightening forces of the bolts, f is a friction coefficient between vibration isolators and adjusting shims, nis a ratio of the maximum running acceleration of locomotive and the gravitational acceleration, Tau is bolt allowable shearing stress, S is a cross sectional area of the bolt, l is the adjusting shimthickness, t is the thickness of a vibration isolator base, sigma a is fatigue strength of the bolt, sigma t is the yield strength of an adjusting shim material, and b is the width of the vibration isolator base. Each factor of the mounting connection pair of the vibration isolator of the locomotive diesel generating set is determined simply, conveniently and reasonably, the phenomena of deformation, shearing and fatigue rupture of the adjusting shims and the connecting bolts in the mounting connection pair are eliminated, and the stable, safe and reliable running of a locomotive is guaranteed.
Description
technical field [0001] The invention relates to the technical field of locomotives, in particular to a mounting connection pair and a design method for a vibration isolator of a diesel generator set of a locomotive. Background technique [0002] The diesel locomotive power unit consists of a diesel engine, a generator, and a coupling to form a diesel generator set, which is installed on the locomotive body through a vibration isolator. When the diesel generator set is running, these vibration isolators play the role of shock and noise reduction. In order to ensure the stable and reliable operation of the diesel generator set, the frame of the diesel generator set must be completely in the same plane. However, due to the long body and heavy weight, the sides of the diesel generator vibration isolator installed on the vehicle body cannot be completely coplanar, and there is a certain deviation. The diesel generator can only be adjusted by adjusting the height of the mounting ...
Claims
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IPC IPC(8): G06F30/17G06F30/15B61C9/24G06F111/10
CPCY02T90/00
Inventor 姜旭龙邢淑梅孙健王铭钢刘艳朝张双成张永毅
Owner CRRC DALIAN CO LTD