Research On Improving The Operation Precision Of DWL-48 Type Tamping Stable Machine

At present,the DWL-48 type Tamping Stable Machine which is the most advanced and precise has been widely used in the speed of 250km/h high-speed rail line tamping operation,However,with the continuous development of China’s high-speed railway,the construction method and construction organization of DWL-48 type Tamping Stable Machine can not fully meet the demand and need to be promoted.The length of the lining and lifting line is less than 20 m result in the line regulation effect of long wave irregularity is inefficient.DWL-48 type Tamping Stable Machine of two-dimensional laser collimation system can only work in the long line segments,work can not be carried out on the curve section,and the light efficiency is low,for a long time;the construction site needs DWL-48 type Tamping Stable Machine repeated several times,the efficiency is low;not efficient acquisition and use of high-speed railway absolute measurement the data of the DWL-48 type Tamping Stable Machine construction on high speed;in view of the above situation,In this paper,the following parts of the study are how to improve the operation accuracy of the DWL-48 type Tamping Stable Machine.The paper is focused on the investigation of the internal and external CP III system and fixed point system,the current situation and main problems of the domestic and foreign ballasted high-speed railway.It is mainly studied from the high-speed railway track requires high accuracy;the traditional tamping machine does use the relative operation method by 20 m steel string and is inefficient on the line regulation effect of long wave irregularity;the two-dimensional laser collimation system can not only be operated in the straight line segment,but also the light efficiency is low and the use rate is low;the high-speed railway ballast maintenance standards is further improved and it is still not efficient collection and use of high-speed railway absolute measurement data to guide DWL-48 type Tamping Stable Machine to tamp and stabilize.It is introduced that the inspection and inspection standards of track geometry state and the evaluation and acceptance of construction operation precision of tamping machine in our country at present.It is focused on studying how to improve the DWL-48 type Tamping Stable Machine tamping construction method and optimize the construction organization to advance the operation accuracy.Combined with the specific construction process of DWL-48 type Tamping Stable Machine in the field,the operation precision of tamping machine is improved by digital tamping constructiontechnology and optimization of tamping construction organization.DWL-48 type Tamping Stable Machine state of the equipment itself directly affects the accuracy of combining with the actual work,through the research of two aspects of analysis and condition based maintenance of equipment and key technology of measuring the relative operation method,through the field of equipment lining control system,lifting control system,control system,maintenance of tamping,key parts of the engine throttle operation equipment,replacement and commissioning,to ensure the excellent state of equipment,so as to ensure the precision of the operation.It is focused on developing the measurement methods of new type tamping vehicle front end data in order to improve the DWL-48 type Tamping Stable Machine operation precision,which combine respectively the new curve of laser detection system,front-end inertial measurement and digital technology application with DWL-48 Tamping Stable Machine lining and lifting system to study the feasibility of improving the stability of DWL-48 Tamping Stable Machine working precision.