Step-by-step compacting device for internal combustion and DC electric locomotive wheel set journal sticking box assembling
A technology for electric locomotives and compacting devices, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., and can solve problems such as endangering the driving safety of the locomotive, the clearance of the axle-holding box bearings becomes larger and out of tolerance, and the contact surface is not tightly bonded. , to achieve the effect of ensuring the runout of the end face
Active Publication Date: 2014-07-23
CRRC LUOYANG CO LTD
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Problems solved by technology
[0002] The sealing rings and bearing inner rings of internal combustion and DC electric locomotive roll-hugging wheel sets are assembled by thermal assembly. Due to the influence of materials and external environment and other factors, certain thermal deformation will occur during the natural cooling process. The contact surface of the adjacent parts will form a non-tight bond. After the wheel set is assembled, the clearance of the bearing box is measured to meet the requirements. However, after a period of use, some faults will occur that the clearance of the bearing box of the axle box becomes larger and out of tolerance. To a certain extent Endangering the driving safety of locomotives
Method used
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[0014] The embodiments of the present invention will be described in detail in conjunction with the accompanying drawings.
[0015] The present invention is described in conjunction with accompanying drawing and specific embodiment:
[0016] Take the assembly of DF7G locomotive wheel set sealing ring Ⅱ3 as an example to illustrate, figure 1 As the assembly of axle 1 and driven gear 2, stand the assembly with the gear side down on the workbench; heat the seal ring Ⅱ3 that has been inspected, selected, and cleaned, and install the heated seal ring Ⅱ3 on the axle with the labyrinth facing upwards On the sealing ring II mounting seat, turn the sealing ring II until it stops, then quickly install the process block 4 to press it on the upper end surface of the sealing ring II3, and hoist the compaction tooling assembly, which includes the lower pressure plate 5 , Compression screw 6, shaft head gland 7, upper pressure plate 8, hollow jack 9, nut 10, connecting rod 11, shaft head gl...
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The invention provides a step-by-step compacting device for internal combustion and DC electric locomotive wheel set journal sticking box assembling. The step-by-step compacting device is mainly used for achieving the purposes that in the assembling process of all components of a wheel set journal sticking box, on the premise of guaranteeing that the end faces of all reference planes (the contact end face of an assembled component is the assembling reference plane of the next assembling component) jump, certain pressure is output through a jack to evenly act on the contact faces of all hot jackets or cold pressing pieces, axial deformation of objects in the processes from natural thermal expansion and thermal contraction to normal temperature is controlled and reduced, tight attaching property of adjacent components and end face jump of the contact faces are guaranteed, and a DF7G type locomotive wheel set assembled through the method does not have the failure that axle suspension bearing clearance is out of tolerance in application.
Description
technical field [0001] The invention belongs to the technical field of locomotive maintenance, and mainly relates to a step-by-step compaction device used in the assembly process of an axle-holding box of a roll-hugging structure wheel set of an internal combustion or DC electric locomotive. Background technique [0002] The sealing rings and bearing inner rings of internal combustion and DC electric locomotive roll-hugging wheel sets are assembled by thermal assembly. Due to the influence of materials and external environment and other factors, certain thermal deformation will occur during the natural cooling process. The contact surface of the adjacent parts will form a non-tight bond. After the wheel set is assembled, the clearance of the bearing box is measured to meet the requirements. However, after a period of use, some faults will occur that the clearance of the bearing box of the axle box becomes larger and out of tolerance. To a certain extent endanger the driving ...
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IPC IPC(8): B23P11/02
CPCB23P11/025
Inventor 肖志强魏果果白银
Owner CRRC LUOYANG CO LTD