Inner pick arm
A technology of inner pick arms and connecting parts, which is applied to roads, tracks, ballast layers, etc., and can solve problems such as high manufacturing costs, affecting service life, and many processes
Active Publication Date: 2015-10-28
CHANGZHOU RUITAI ENG MASCH CO LTD +1
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Problems solved by technology
The manufacturing process is long, there are many processes, and the manufacturing cost is high; and there is stress concentration in the welding part, and cracks are prone to appear after long-term tamping operations with huge impact force and bending stress, which affects the service life
Method used
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Embodiment Construction
[0017] Such as figure 1 , 2 , 3, and 4, a kind of inner pick arm of the present invention includes a cylinder piston rod connection part 1, a box body connection part 2 and a stamping pick connection part 3 connected in sequence, and the cylinder piston rod connection part 1 has a cylinder piston Rod hinge hole 1-1, the box connecting part 2 has a box hinge hole 2-1, the tamping pick connecting part 3 has two tamping pick holes 3-6, and the tamping pick connecting part 3 has a The clamping groove 3-5 extending in the direction of the generatrix of the hole wall of the tamper hole 3-6, the clamping groove 3-5 is connected with the corresponding tamper hole 3-6, and the tamper connection part 3 is located on each A horizontal through hole 3-3 is provided on the top of each tamping hole 3-6, and the top wall of the tamping hole 3-6 of the tamping connection part 3 has a transverse stress-reducing groove 3-7 and an axial cylindrical pin hole 3-4, the stress-reducing groove 3-7 c...
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The invention discloses an inner pick arm. The inner pick arm comprises an oil cylinder piston rod connecting part, a box body connecting part and a tamping pick connecting part which are sequentially connected, wherein the oil cylinder piston rod connecting part is provided with an oil cylinder piston rod hinging hole, the box body connecting part is provided with a box body hinging hole, the tamping pick connecting part is provided with two tamping pick holes, clamping grooves which extend along the direction of the generatrix of the walls of the tamping pick holes are arranged on the tamping pick connecting part, the clamping holes run through the corresponding tamping pick holes, a transverse run-through hole is formed above each tamping pick hole in the tamping pick connecting part, transverse stress reducing grooves and axial cylindrical pin holes are formed in the top walls of the tamping pick holes of the tamping pick connecting part, the stress reducing grooves are communicated with the run-through holes and the tamping pick holes, the axial cylindrical pin holes are communicated with the run-through holes and the tamping pick holes, and the clamping grooves are additionally communicated with the corresponding stress reducing grooves and the run-through holes. The inner pick arm has the advantages that the inner pick arm is convenient to manufacture, the stress concentration situation of the inner pick arm can be improved and the service life is prolonged.
Description
technical field [0001] The invention relates to a key component of railway track maintenance machinery, in particular to the structure of a pick arm of a tamping device. Background technique [0002] The inner pick arm is the key component of the tamping device of railway track maintenance machinery. Its main function is to fix the tamping pick, transmit vibration and clamping force. [0003] The tamping vehicles used on my country's lines are mainly imported from the Plasser company in Austria. The inner pick arm structure has developed from the conical (tamping pick hole) inner pick arm used by the D08-32 type tamping vehicle to the current D09-32 continuous type. The cylindrical (tamping pick hole) inner pick arm used by the Model tamping car has been improved and improved in strength and clamping method of the inner pick arm. However, because the existing finished product of the inner pick arm is divided into two parts, the welding block and the inner pick arm, machining...
Claims
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IPC IPC(8): E01B27/16
Inventor 陈红圣王磊翁敏红
Owner CHANGZHOU RUITAI ENG MASCH CO LTD