汽車與變速箱畢業(yè)設(shè)計(jì)外文翻譯-其他專業(yè)(編輯修改稿)
2025-02-24 04:03 本頁面
【文章內(nèi)容簡介】 utomobile transmission 1. Easy transmission of the basic structure: the shell, transmission and manipulation of some parts. (1) Shell: Shell is the basic pieces of support for the installation of transmission and storage of all parts lubricants. Has installed its bearing on the precision boring. Transmission under varying load, so the stiffness of the shell should be enough, there is to strengthen the wall, the shape of the plex, as many castings (gray cast iron materials, monly used HT200). In order to facilitate the installation, transmission and manipulation of some Split parts are frequently made, cover with the housing connected by bolts and reliable positioning. Shell has e on up, I put the oil, check oil foot mouth, should also be taken into heat dissipation. (2) Transmission parts: is the gear, shaft, bearings and other transmission parts. Geometry axis through strength, stiffness calculation. Mainly due to decide on the stiffness, while the carbon steel and alloy steel elastic modulus almost equal, so the general use of carbon steel (monly used 45 steel). Only one gear with the shaft or axle load made serious only by steel. Shaft and gear for many spline connection (for neutral good, reliable transmission of power, a small pressive stress, etc.). Spline shaft bearing parts and let the surface hardening treatment by the Department. Shaft with rolling bearing supports many, easy lubrication, high efficiency, small radial clearance, axial positioning should be reliable. Many ways to use splash lubrication (υ 25m / s, as long as the appropriate viscosity apparently succumbed to the wall). (3) to manipulate parts: the main ponents located inside the transmission cover. 2. The position of the structural characteristics of transmission: there is easy and efficient transmission, the advantages 第 6 頁 of simple easytouseJun mine but a few files, i changed the scope of small (traction, speed small), file number should be taken only at certain limited Cut used. If the increase in the scope of i, then increase the size so that transmission, axle span increase, both in order to increase the fileaxis span of a few do not make too large, transmission can be formed. The position of the socalled transmission, usually from both a bination of easy transmission, one of a few more files as the main transmission, less transmission known as the deputy. Transmission ponent of advantages: (1) can reduce the number of gears, and a few more files to reduce the number of gear the more obvious advantages. Easy pared with the transmission, it can shorten the length of shaft to reduce the transmission of the external size and weight, and can easily be more than one reverse. Into the file so the current number of files more than six hours, almost all transmission ponents. (2) transmission: the rate of change of Ω than large: if the main transmission gear ratio change rate Ωzu = 3, Vice transmission Ωfu = 4 is Ω = 12。 easy transmission arrangement Ω = 12, the structure is often difficult to reasonable. Composed of transmission of disadvantage: (1) file groups have correspondence between the transmission ratio, so that each file is not 2, (the speed and traction) are ideal. (2) manipulation of trouble shifting, and sometimes both want to manipulate some speed, if not for the flower arrangement will shift memory. In order to reduce the control action, it is best to shift the order. Calling attention to the grade for this presentation ten out files so that the first group of transmission ratio is greater than all of the first file group 11 to the majority of phase transformation from the stall speed of just fixing the main purpose of this is the only way most convenient. GM HydraMatic 第 7 頁 General can be regarded as the founder of automotive automatic transmission has been. The world39。s first automatic transm
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