A fine milling device for a mobile rail milling car

A mobile, driving device technology, applied in the direction of track, track laying, track maintenance, etc., can solve the problems of insufficient surface finish of the rail, air and noise pollution, serious wear of the grinding wheel, etc., to achieve easy replacement, small environmental pollution, and easy operation high efficiency effect

Active Publication Date: 2017-01-18
CRCC HIGH TECH EQUIP CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the existing rail milling and grinding vehicles still use the grinding method to cut off the edges and corners and improve the surface finish of the rails during the secondary repair after the rough milling of the rails, although the amount of grinding is smaller than that of the rail grinding vehicles, it is inevitable that there is still damage to the rails. The problem of air and noise pollution, the grinding wheel is severely worn and difficult to replace, and the surface finish of the rail is not high enough after operation

Method used

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  • A fine milling device for a mobile rail milling car
  • A fine milling device for a mobile rail milling car
  • A fine milling device for a mobile rail milling car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0043] Embodiment 1.1, the fine milling device of the mobile rail milling car, which includes two tool holders 1, the tool holders 1 are arranged symmetrically about the transverse central axis of the connecting beam 6, the tool holder 1 is connected to the milling drive device 2, and the lower end of the tool holder 1 is also Equipped with a milling head 3, the output end of the milling driving device 2 is connected to the drive shaft of the milling head 3 through a mechanical transmission device, so as to drive the milling cutter on the milling head 3 and make it rotate perpendicular to the surface of the rail; the tool holder 1 is connected to the hydraulic storage The energy device is used to recover the fine milling device to the non-milling state when the hydraulic pipeline of the fine milling device leaks oil. One side of each tool holder 1 is also connected to a hydraulically driven vertical movement and positioning device 4 and a set of electric motors. Horizontal move...

Embodiment 12

[0054] Embodiment 1.2, the fine milling device of the mobile rail milling vehicle, is the same as Embodiment 1.1, except that two vertical guide rails are integrated with the second back plate.

Embodiment 13

[0055] Embodiment 1.3, the fine milling device of the mobile rail milling car, is the same as Embodiment 1.1, except that the horizontal guide rail 51 is integrated with the vertical surface of the connecting beam 6 .

[0056] The working mode of the fine milling device of the mobile rail milling car provided by the above embodiment is: during operation, the hydraulically driven vertical movement and the positioning device vertically move the fine milling device to attach the engaging rotary end milling tool holder to the surface of the rail, and the motorized horizontal The moving and positioning device controls the horizontal movement of the engaging rotary face milling tool holder until the fine milling device is in the working position, the milling drive device of the fine milling device is started, the cutter of the fine milling unit rotates at high speed, and the surface of the rail head is finished again. The surface of the rail is milled to eliminate the edges and corne...

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Abstract

A finish-milling unit of a mobile rail-milling car comprises at least one tool rest (1); the tool rests (1) are connected with milling driving devices (2); the lower end of each tool rest (1) is provided with a milling head (3); the output end of each milling driving device is connected with a drive shaft of the corresponding milling head through a mechanical transmission device; one side of each tool rest (1) is further connected with a group of hydraulic vertical movement and positioning devices (4) and a group of electric horizontal movement and positioning devices (5); each group of hydraulic vertical movement and positioning devices (4) is connected with the corresponding electric horizontal movement and positioning devices (5); the electric horizontal movement and positioning devices (5) are used for positioning the horizontal positions of milling tools. The finish-milling unit has the advantages that a steel rail which is roughed can be finely dressed again, dressing effect is good, and operating efficiency is high; omission of the grinding method for secondary dressing of the steel rail leads to low environmental pollution; owing to the tool rests capable of rotating around their rotational axes, the tool rests and blades on the same are convenient to change.

Description

technical field [0001] The invention relates to a fine milling device of a mobile rail milling car, in particular to a fine milling device of a rail milling car for performing mobile on-line secondary milling on a line rail after rough milling, and belongs to the technical field of engineering equipment . Background technique [0002] In recent years, my country's urban rail transit has developed rapidly. With the increase of traffic volume and operating speed, the problem of rail surface damage has become more and more prominent. The common damages include contact fatigue cracks, corrugation and rail side grinding. If the surface damage of the rail cannot be repaired in time and effectively, it will seriously affect the driving safety and the service life of the rail. [0003] In order to ensure the safety, stability and comfort of train operation, improve the wheel-rail contact state, reduce wheel-rail noise, increase the service life of the rail, slow down the occurrence...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B31/13
CPCE01B31/13
Inventor 郭关柱周慧鹏赵苍卫明
Owner CRCC HIGH TECH EQUIP CORP LTD
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