Excitation tamping device

Abstract

The invention relates to an excitation tamping device, and belongs to the technical field of rail transit. The device comprises a liftable tamping machine frame, a hydraulic shock excitation oil cylinder hinged to the middle of the tamping machine frame, at least one connecting plate hinged to the piston rod end of the hydraulic shock excitation oil cylinder, double-end telescopic clamping oil cylinders fixedly connected to the two sides of the connecting plate correspondingly, and a pair of tamping arms hinged to the two sides of the tamping rack, and the upper ends of the paired tamping arms are respectively hinged with the corresponding double-end telescopic clamping oil cylinders. The upper ends of the paired tamping picks are equal in stress magnitude, opposite in direction and balanced in stress, actions are symmetrical, centering and clamping can be guaranteed, and the structure is quite compact. In addition, due to the fact that excitation drive concentration and clamping drive are reasonably separated, the number of excitation devices is reduced by half, the cost is remarkably reduced, and due to the fact that the two sets of tamping picks in the length direction of the sleeper are installed on different tamping arms, when the ballasts at the two corresponding positions are different in compactness, even and compact clamping can be achieved.

Description

technical field [0001] The invention relates to a tamping device, in particular to a vibration-exciting tamping device, which belongs to the technical field of rail transit. Background technique [0002] The tamping equipment is the key equipment used for tamping operation in the railway maintenance process in the field of rail transit—that is, gathering and compacting the ballast gravel under the track. Disclosed in the Chinese patent literature, F), it has a support member that can be adjusted in height along the guide with respect to the tamping equipment frame, and the tamping tool pair configured as a swing rod is swingably supported on the support body Above, the determined tamping tool of the pair of tamping tools for sinking into the gravel bed can be driven in opposite directions by means of a vibrating drive and can be hydraulically fed, wherein for each of the pair of tamping tools The tamping tool is equipped with a feed drive, wherein a plurality of tamping too...

AI Technical Summary

Problems solved by technology

This solution has the following disadvantages: 1) Four hydraulic vibration cylinders are required, which is expensive; 2) The paired ramming arms are respectively driven by hydraulic cylinders whose upper ends do not extend in the same straight line, and the force balance is not good, which is not conducive to ensuring alignment Clamping; 3) The two sets of tamping picks in the length direction of the sleeper can only be clamped synchronously because they are installed on the same pick arm. When the density of ballast at the two corresponding positions is different, it is difficult to achieve uniform compaction

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