CN216551376U

CN216551376U - Movable rail milling vehicle set and rail milling vehicle

Info

Publication number: CN216551376U
Application number: CN202121810064.XU
Authority: CN
Inventors: ***; 蔡昌胜; 陈忠良
Original assignee: CRCC High Tech Equipment Corp Ltd
Current assignee: CRCC High Tech Equipment Corp Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-05-17
Anticipated expiration: 2031-08-04

Abstract

The embodiment of the application provides a movable rail milling vehicle set and a rail milling vehicle. The movable rail milling vehicle set comprises at least two rail milling vehicles which are sequentially connected along the length direction, two ends of each rail milling vehicle are respectively provided with a connecting structure, and adjacent rail milling vehicles are detachably connected through the connecting structures; at least one rail milling vehicle is provided with at least one group of finish milling devices; and at least one rail milling vehicle is provided with a power system, and the power system is used for driving the movable rail milling vehicle set to run and providing a power source for the finish milling device. By adopting the scheme in the application, the running speed of the rail milling vehicle can be increased, the maintenance of the steel rail is completed in a small quantity and many times of rapid milling modes, and the milling efficiency is increased.

Description

Movable rail milling vehicle set and rail milling vehicle

Technical Field

The application relates to the engineering machinery technology, in particular to a movable rail milling vehicle set and a rail milling vehicle.

Background

A rail milling vehicle belongs to one of large-scale road maintenance machines aiming at the maintenance direction of a steel rail, and can eliminate damages such as long-wave and short-wave corrugation, cracks, fat edges, stripping and falling blocks and the like formed on the surface of a rail top of the steel rail through one-time milling. The conventional rail milling vehicle has a single maintenance mode, a narrow application range and a low milling speed.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the technical defects, the embodiment of the application provides a mobile rail milling vehicle set and a rail milling vehicle.

According to a first aspect of the embodiment of the application, a movable rail milling vehicle set is provided, and comprises at least two rail milling vehicles which are sequentially connected along a length direction, wherein two ends of each rail milling vehicle are respectively provided with a connecting structure, and the adjacent rail milling vehicles are detachably connected through the connecting structures;

at least one rail milling vehicle is provided with at least one group of finish milling devices which are arranged at intervals along the longitudinal direction of the rail milling vehicle;

and at least one rail milling vehicle is provided with a power system, and the power system is used for driving the movable rail milling vehicle set to run and providing a power source for the finish milling device.

Optionally, it is single the finish milling device includes at least two end mills and is first end mill and second end mill respectively, end mill's pivot extends along vertical direction, end mill includes the milling part that is used for installing the cutting blade, singly on the end mill the cutting edge of cutting blade common formation is to the half cutting plane of the railhead surface cutting of rail, first end mill with on the second end mill half cutting plane concatenation form right the cutting plane of railhead cutting, the cross sectional shape of cutting plane accords with predetermined rail profile shape.

Optionally, the face mill further comprises a mating portion, the milling portion being disposed at a bottom of the mating portion, the mating portion including a plurality of teeth disposed around the axis of rotation, the teeth of the first and second face mills being intermeshed.

Optionally, the finish milling device includes a tool rest and at least two sets of end face milling cutter sets, the tool rest with the bottom of the rail milling car is connected, every the end face milling cutter set includes mutually supporting first end face milling cutter with second end face milling cutter, the left and right sides symmetrical arrangement of tool rest has the end face milling cutter set to respectively corresponding with single rail.

Optionally, the movable rail milling vehicle set comprises two rail milling vehicles, wherein one rail milling vehicle is provided with the power system, and the other rail milling vehicle is provided with the finish milling device; or

The movable rail milling vehicle group comprises a plurality of sections of rail milling vehicles, and each rail milling vehicle is provided with the power system and the finish milling device; or

The movable rail milling vehicle group comprises two power vehicles positioned at the head end and the tail end and one or more operation vehicles positioned between the two power vehicles.

Optionally, the power system comprises a power supply system for supplying power to a contact line system, and the power supply system comprises a pantograph arranged at the top of the rail milling vehicle; or, the power system comprises a battery; alternatively, the power system includes an internal combustion engine.

Optionally, the single power system comprises two power supply systems which are mutually backup and used for supplying power to a contact network, and each power supply system comprises a pantograph arranged at the top of the rail milling vehicle; or the power system comprises two storage batteries which are mutually backed up; or the power system comprises two internal combustion engines which are mutually backed up; or, the power system comprises any two of the power supply system, the storage battery and the internal combustion engine.

Optionally, the mobile rail milling turning group is provided with a cab, a control module is arranged in the cab, each finish milling device comprises an end mill and a driving device for driving the end mill, and the control module is in signal connection with all the driving devices to control each finish milling device to start or stop.

Optionally, the rail milling vehicle further comprises a rail profile detection device, a rail corrugation detection device and two bogies, wherein the two bogies are respectively arranged at two ends of the bottom of the rail milling vehicle, the rail profile detection device is arranged at one end of the movable rail milling vehicle group on the bogie, and the rail corrugation detection device is arranged at the other end of the movable rail milling vehicle group on the bogie.

According to a second aspect of the embodiments of the present application, there is provided a rail milling vehicle as described above, wherein the rail milling vehicle is a single-section vehicle, and the rail milling vehicle includes at least one set of finish milling device.

Adopt the portable rail car group that mills that provides in this application embodiment, can reach following technological effect at least:

the movable rail milling vehicle is only provided with the finish milling device, and is not provided with the rough milling device, and the finish milling device has less one-time cutting amount, so that the traveling speed of the rail milling vehicle set is improved, and the maintenance of the rail is completed in a small-amount multi-pass rapid milling mode. Moreover, by adopting the movable rail milling vehicle group, the finish milling devices and the rail milling vehicles with corresponding quantity can be selected according to the actual steel maintenance requirement, so that the steel rail can be repaired with the highest ground efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a mobile rail milling unit according to a first embodiment provided in an example of the present application;

fig. 2 is a schematic structural diagram of a mobile rail milling unit according to a second embodiment provided in an example of the present application;

FIG. 3 is a schematic structural diagram of a rail milling vehicle according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a mobile rail milling unit according to a third embodiment provided in an example of the present application;

FIG. 5 is a schematic top view of a face mill of the mobile rail mill train provided by an embodiment of the present application, with the rails shown in phantom;

FIG. 6 is a schematic cross-sectional view of a face mill of the mobile rail mill train provided by an embodiment of the present application, with the rails shown in phantom.

Reference numerals

100-a movable rail milling vehicle set; 1-milling a rail vehicle; 2-operation vehicle; 3-a power car; 10-finish milling device; 11-a first end mill; 12-a second face mill; 13-milling part; 14-half cutting plane; 15-a mating portion; 16-a rotating shaft; 20-a power system; 30-a driver cab; 40-a bogie; 50-a connecting structure; 200-steel rail.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In order to repair a rail 200 that is not seriously damaged quickly and efficiently, according to a first aspect of the present disclosure, fig. 1 is a schematic structural diagram of a mobile rail milling vehicle set 100 according to a first embodiment provided in this disclosure, fig. 2 is a schematic structural diagram of a mobile rail milling vehicle set 100 according to a second embodiment provided in this disclosure, fig. 3 is a schematic structural diagram of a rail milling vehicle 1 provided in this disclosure, and fig. 4 is a schematic structural diagram of a mobile rail milling vehicle set 100 according to a third embodiment provided in this disclosure, as shown in fig. 1 to 4, a mobile rail milling vehicle set 100 is provided, where the mobile rail milling vehicle set 100 includes at least two rail milling vehicles 1 connected in sequence along a length direction. The two ends of the rail milling vehicle 1 are respectively provided with a connecting structure 50, and the adjacent rail milling vehicles 1 are detachably connected through the connecting structures 50. Alternatively, the connecting structure 50 may be a coupler or a connecting rod. At least one rail milling vehicle 1 is provided with at least one set of finish milling devices 10, in other words, at least one rail milling vehicle 1 is provided with a set of finish milling devices 10, and/or at least one rail milling vehicle 1 is provided with a plurality of sets of finish milling devices 10 arranged at intervals in the longitudinal direction. Alternatively, the finish milling device 10 may be provided at the bottom or end of the rail milling machine 1. In the rail milling machine of the rail milling machine set, the bottom of one or more rail milling machines 1 can be provided with no finish milling device 10, and the bottom of a single rail milling machine 1 can be provided with one or more groups of finish milling devices 10, and one or more rail milling machines 1 can be provided. When multiple sets of finish milling devices 10 are arranged at the bottom of a single rail milling vehicle 1, the multiple sets of finish milling devices 10 are arranged at intervals along the longitudinal direction at the bottom of the rail milling vehicle 1.

At least one rail milling vehicle 1 is provided with a power system 20, and the power system 20 is used for driving the mobile rail milling vehicle set 100 to run and providing a power source for the finish milling device 10. In other words, the drive train 20 may be provided on only one rail milling vehicle 1, or the drive trains 20 may be provided on a plurality of rail milling vehicles 1. The rail milling vehicle 1 provided with the power system 20 drives the whole movable rail milling vehicle group 100 to travel, and transmits power to the finish milling devices 10 on the rail milling vehicles 1; alternatively, the drive train 20 is provided on a plurality of rail milling carriages 1.

The rail 200 of high-speed railway is generally damaged differently and seriously, if the existing rail milling vehicle 1 provided with a rough milling device is adopted, the milling speed cannot be increased, and the milling efficiency is low.

Aiming at the steel rail 200 which is not seriously damaged, the movable rail milling vehicle 1 is only provided with the finish milling device 10, and is not provided with the rough milling device, and the finish milling device 10 has less cutting amount at one time, so that the running speed of the rail milling vehicle 1 set is improved, and the maintenance of the steel rail 200 is completed in a small-amount multi-pass rapid milling mode. Moreover, by adopting the movable rail milling vehicle group 100, the corresponding number of finish milling devices 10 and rail milling vehicles 1 can be selected according to the actual steel maintenance requirement.

For example, when the requirement for repairing the steel rail 200 is high, 3 milling rail cars 1 and 6 sets of finish milling devices 10 can be adopted, and two sets of finish milling devices 10 are arranged on each milling rail car 1; when the renovation requirements on the steel rail 200 are general, 2 milling rail cars 1 and 4 sets of finish milling devices 10 can be adopted, and two sets of finish milling devices 10 are arranged on each milling rail car 1; when the requirements for repairing the steel rail 200 are low, 1 section of

rail milling vehicle

1 and 2 sets of finish milling devices 10 arranged on the rail milling vehicle 1 can be adopted, and the rail milling vehicle 1 can realize efficient milling with the operation speed of more than or equal to 3km/h and the maximum milling amount of more than or equal to 0.4 mm.

Therefore, by adopting the movable rail milling vehicle group 100, the number of the rail milling vehicles 1 and the number of the finish milling devices 10 can be flexibly configured according to different working condition requirements, so that the repair of the steel rail 200 can be completed with the highest efficiency. Different configuration forms can be suitable for the maintenance of different requirements of urban rails, ordinary railways, high-speed railways and heavy haul railways.

The finish milling device 10 located in front of the traveling direction of the movable rail milling vehicle set 100 mills the rail 200 for the first time, and the finish milling device 10 located behind can be sequentially and gradually fed downwards by a certain amount, so that the rail 200 is milled deep and deep, and the milling amount of each milling device is ensured to be the same, so that the rail 200 is milled by the finish milling devices 10 arranged in the longitudinal direction.

In order to be able to mill all surfaces of the rail head of the steel rail 200, in one embodiment of the present application, fig. 5 is a schematic top view of a face milling cutter of the mobile rail milling stock 100 provided in the present application, and fig. 6 is a schematic cross-sectional view of the face milling cutter of the mobile rail milling stock 100 provided in the present application, wherein the steel rail 200 is shown by a dotted line, as shown in fig. 5 and 6, a single finish milling device 10 includes at least two face milling cutters, respectively a first face milling cutter 11 and a second face milling cutter 12. The rotary shaft 16 of the end mill extends in the vertical direction. The face mill comprises a milling portion 13 for mounting cutting inserts, the cutting edges of which on a single face mill together form a half-cut plane 14 for cutting the rail head surface of the rail 200. The half cutting planes 14 on the first end mill 11 and the second end mill 12 are spliced to form a cutting plane for cutting the rail head. The cross-sectional shape of the cutting plane conforms to the profile of the rail head of the rail 200 to be preset, so that the rail 200 is milled into the preset shape by the face mill. The first end mill 11 and the second end mill 12 are distributed on both sides of the center line of the top surface of the rail 200 with the center line of the top surface of the rail 200 as a reference.

As shown in fig. 6, the rail head surface of the steel rail 200 is a circular arc surface, the cutting blades on a single end mill form a half-cutting plane 14, and the half-cutting planes 14 on two end mills form a cutting plane, which has the same cross-sectional shape as that of the rail head of the preset steel rail 200 as shown in fig. 6, so that all surfaces of the rail head of the steel rail 200 are milled by the first end mill 11 and the second end mill 12 together.

To further ensure that all surfaces of the head of the rail 200 are milled, as shown in fig. 5 and 6, the face mill further comprises a mating portion 15, the milling portion 13 being provided at the bottom of the mating portion 15, the mating portion 15 comprising a plurality of teeth arranged around a rotation axis 16, the teeth of the first face mill 11 and the second face mill 12 being in engagement with each other.

By means of mutual meshing of the first end face milling cutter 11 and the second end face milling cutter 12 which are positioned at two sides of the steel rail 200, half-cutting planes 14 of the first end face milling cutter 11 and the second end face milling cutter 12 can be overlapped at the center line of the top surface of the steel rail 200, so that all surfaces of the top surface of the steel rail 200 can be milled and repaired, and interference between the first end face milling cutter 11 and the second end face milling cutter 12 is avoided; in addition, the first end mill 11 and the second end mill 12 which are meshed with each other can keep synchronous rotation, and only one of the end mills needs to be driven to rotate by the driving device, so that the number of the driving devices can be saved.

In order to improve the efficiency of milling the rails 200 while milling two rails 200, in one embodiment of the present application, the finish milling apparatus 10 includes a tool holder and at least two sets of face milling cutter sets. The cutter frame is connected with the bottom of milling rail car 1, every terminal surface milling cutter group includes intermeshing's first terminal surface milling cutter 11 and second terminal surface milling cutter 12, the left and right sides symmetrical arrangement of cutter frame has the terminal surface milling cutter group, in order to be corresponding with single rail 200 respectively, promptly, the top of single rail 200 all is provided with the terminal surface milling cutter group, therefore, when portable milling rail car group 100 was gone forward, mill two rail 200 simultaneously through two terminal surface milling cutter groups on the cutter frame, and then, just can accomplish the restoration to two rail 200 through walking once, improve the repair efficiency.

In the present application, the number of the specifically arranged rail milling vehicles 1 is not limited, and in a first embodiment, as shown in fig. 2, the mobile rail milling vehicle set 100 includes two rail milling vehicles 1, one rail milling vehicle 1 is provided with a power system 20, which is a power vehicle 3, and the other rail milling vehicle 1 is provided with a finish milling device 10, which is a work vehicle 2, the power system 20 provides power for the traveling of the two rail milling vehicles 1 and the finish milling device 10, and the work vehicle 2 is driven to travel by the work vehicle 2, so that the work vehicle 2 completes the milling repair of the rail 200.

In a second embodiment, as shown in fig. 1, in order to improve the milling efficiency of the rail 200, the mobile rail milling vehicle set 100 includes a plurality of rail milling vehicles 1, and each rail milling vehicle 1 is provided with a power system 20 and a finish milling device 10, and the rail milling vehicles 1 can operate independently from each other, and an appropriate number of rail milling vehicles 1 can be selected to be flexibly combined according to actual repair requirements. For example, the mobile rail milling vehicle set 100 includes two rail milling vehicles 1, each rail milling vehicle 1 is a power vehicle 3 and is also a working vehicle 2, and each rail milling vehicle 1 is provided with a power system 20 and a finish milling device 10.

In the third embodiment, the rail milling vehicle 1 provided with the power system 20 is a power vehicle 3, the rail milling vehicle 1 provided with the finish milling device 10 is a working vehicle 2, and as shown in fig. 4, the mobile rail milling vehicle group 100 comprises two power vehicles 3 positioned at the head end and the tail end and one or more working vehicles 2 positioned between the two power vehicles 3. The two power vehicles 3 located at the head and the tail are used for driving the whole movable rail milling vehicle set 100 to run forwards or backwards, and provide power sources for the operation vehicles 2 located in the middle. The work vehicle 2 is used to perform a milling operation on the rail 200. For example, the mobile rail milling vehicle set 100 includes three rail milling vehicles 1, the power vehicles 3 are arranged at the head and tail ends, and the working vehicle 2 is arranged between the two power vehicles 3.

In the present application, the specific power source form of the power system 20 is not limited, in the first embodiment, the power system 20 adopts a single power mode, and in the first implementation manner of the first embodiment, the power system 20 includes a power supply system for taking power from a contact line, and the power supply system includes a pantograph arranged at the top of the rail milling vehicle 1. The power system 20 further comprises a high-voltage cabinet arranged on the rail milling vehicle 1, an operation inverter, a traction inverter and a traction auxiliary inverter arranged at the bottom of the rail milling vehicle 1. The pantograph is used for supplying power to the operation system 3 through filtering of the high-voltage cabinet and inversion of the operation inverter in sequence; the pantograph supplies power to the traction motor and the brake resistor through filtering of the high-voltage cabinet and inversion of the traction inverter; the pantograph is used for supplying power to the auxiliary system through filtering of the high-voltage cabinet and inversion of the traction auxiliary inverter in sequence. The mobile rail milling vehicle set 100 in the embodiment adopts a contact network to supply power as a unique power source, zero emission in the whole process of running and operation can be realized, the noise is low, and the influence of vibration of a traditional engine on the operation effect of an operation system is eliminated while green driving is realized.

In a second embodiment of the first exemplary embodiment, the drive train 20 comprises an accumulator, by means of which the power supply to the running system of the rail milling machine 1 and to the finish milling device 10 is provided.

In a third embodiment of the first exemplary embodiment, the drive train 20 comprises an internal combustion engine, and the generator is supplied with electrical energy, and then the running train of the rail milling machine 1 and the finish milling device 10 are supplied with electrical energy by the generator.

In a second embodiment, powertrain 20 employs dual power modes. In the first implementation manner of the second embodiment, the single power system 20 includes two power supply systems which are backup to each other and used for supplying power to a catenary, and the power supply system includes a pantograph arranged at the top of the rail milling vehicle 1;

in a second implementation of the second embodiment, the power system 20 includes two batteries that back up each other;

in a third embodiment of the second embodiment, the powertrain 20 includes two internal combustion engines that back up each other;

in the fourth embodiment of the second embodiment, the power system 20 includes any two of the power supply system, the storage battery and the internal combustion engine, in other words, the power system 20 includes the power supply system and the storage battery, or the power supply system or the internal combustion engine, or the storage battery or the internal combustion engine.

By setting the power system 20 to be in a dual-power mode, when one power source fails, the other power source can provide power, so that the rail milling vehicle 1 can still work normally, and the reliability of the mobile rail milling vehicle set 100 is improved.

To accommodate maintenance of the different requirements of the rails 200, in one embodiment of the present application, the mobile rail milling stock 100 is provided with a cab 30. Alternatively, the drivers ' cabs 30 may be disposed at the head and tail ends of the movable rail milling vehicle set 100, or the drivers ' cabs 30 may be disposed at one end of the movable rail milling vehicle set 100, or the drivers ' cabs 30 may be disposed in the middle of the movable rail milling vehicle set 100.

A control module is arranged in the cab 30, each finish milling device 10 comprises an end mill and a driving device for driving the end mill, and the control module is in signal connection with all the driving devices respectively so as to control the start or stop of each finish milling device 10. Alternatively, the control module may be a control panel or control buttons. The driving device can be a motor driving the end mill to rotate. Therefore, a control module in the cab 30 can control a certain finish milling device 10 to start or stop, so that multiple sets of finish milling devices 10 on the movable rail milling turning group 100 can operate simultaneously, independently or randomly in combination to meet different working condition requirements.

In order to detect the repairing effect of the mobile rail milling vehicle set 100 on the steel rail 200, in an embodiment of the present application, the rail milling vehicle 1 further includes a rail profile detection device (not shown), a rail corrugation detection device (not shown) and two bogies 40, the two bogies 40 are respectively disposed at two ends of the bottom of the rail milling vehicle 1, the rail profile detection device is disposed on the bogie 40 at one end of the mobile rail milling vehicle set 100 and is located directly above the steel rail 200, and the rail corrugation detection device is disposed on the bogie 40 at the other end of the mobile rail milling vehicle set 100 and is located directly above the steel rail 200. Rail profile detection device and rail corrugation detection device install respectively on two bogies 40, when measuring the profile and the corrugation of rail 200, rail profile detection device and rail corrugation detection device can follow the trend that bogie 40 adaptation rail 200 carries out corresponding deflection, no matter be the straightway of measuring rail 200, still measure the curve section of rail 200, rail profile detection device and rail corrugation detection device can be located rail 200 directly over all the time, thereby can carry out comprehensive detection to all rail 200 sections.

According to another aspect of the present application, as shown in fig. 3, there is provided a rail milling vehicle 1, wherein the rail milling vehicle 1 is the rail milling vehicle 1, and the rail milling vehicle 1 is a single-section vehicle, and the rail milling vehicle 1 comprises at least one set of finish milling devices 10. The single-section rail milling vehicle 1 can independently run and complete milling operation, and the single-section rail milling vehicle 1 can be adopted in occasions with lower maintenance requirements, so that the energy consumption is reduced.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application. The use of directional terms such as "up, down, left, right" generally refers to "up, down, left, right" when the mobile track milling unit is in a normal state, and is consistent with "up, down, left, right" when the mobile track milling unit is in a normal driving state.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. The movable rail milling vehicle set is characterized by comprising at least two rail milling vehicles (1) which are sequentially connected along the length direction, wherein two ends of each rail milling vehicle (1) are respectively provided with a connecting structure (50), and the adjacent rail milling vehicles (1) are detachably connected through the connecting structures (50);

at least one rail milling vehicle (1) is provided with at least one group of finish milling devices (10), the finish milling devices (10) are used for only finish milling the steel rail, and the number of the finish milling devices (10) is at least 2;

and a power system (20) is arranged on at least one rail milling vehicle (1), and the power system (20) is used for driving the movable rail milling vehicle set (100) to run and providing a power source for the finish milling device (10).

2. The mobile rail-milling consist according to claim 1, characterized in that a single finishing device (10) comprises at least two face mills, respectively a first face mill (11) and a second face mill (12), the spindles (16) of which extend in a vertical direction, the face mills comprising milling portions (13) for mounting cutting inserts, the cutting edges of the cutting inserts on a single face mill together forming a half-cutting plane (14) for cutting the rail head surface of a rail (200), the half-cutting planes (14) on the first face mill (11) and the second face mill (12) being joined to form a cutting plane for cutting the rail head, the cross-sectional shape of which coincides with the predetermined profile of the rail head of the rail (200).

3. The mobile rail milling consist as recited in claim 2, characterized in that the face mill further comprises a mating section (15), the milling section (13) being arranged at the bottom of the mating section (15), the mating section (15) comprising a plurality of teeth arranged around the rotation axis (16), the teeth of the first face mill (11) and the second face mill (12) being intermeshed.

4. The mobile rail milling vehicle set as claimed in claim 2, characterized in that the finish milling device (10) comprises a tool holder and at least two sets of face milling cutter sets, the tool holder is connected with the bottom of the rail milling vehicle (1), each face milling cutter set comprises the first face milling cutter (11) and the second face milling cutter (12) which are matched with each other, and the face milling cutter sets are symmetrically arranged on the left and right sides of the tool holder to correspond to the single steel rail (200) respectively.

5. The mobile rail milling vehicle set according to claim 1, characterized in that the mobile rail milling vehicle set (100) comprises two rail milling vehicles (1), wherein one rail milling vehicle (1) is provided with the power system (20), and the other rail milling vehicle (1) is provided with the finish milling device (10); or

The movable rail milling vehicle group (100) comprises a plurality of rail milling vehicles (1), and each rail milling vehicle (1) is provided with the power system (20) and the finish milling device (10); or

The rail milling vehicle (1) provided with the power system (20) is a power vehicle (3), the rail milling vehicle (1) provided with the finish milling device (10) is an operation vehicle (2), and the movable rail milling vehicle set (100) comprises two power vehicles (3) positioned at the head end and the tail end and one or more operation vehicles (2) positioned between the two power vehicles (3).

6. The mobile rail milling consist according to claim 1, characterized in that the power system (20) comprises a power supply system for taking power to a catenary, the power supply system comprising a pantograph arranged at the top of the rail milling consist (1); or, the power system (20) includes a battery; alternatively, the power system (20) includes an internal combustion engine.

7. The mobile rail milling vehicle consist according to claim 1, characterized in that the single power system (20) comprises two power supply systems which are backup to each other and used for taking power to a catenary, and the power supply systems comprise pantographs arranged at the top of the rail milling vehicle (1); or the power system (20) comprises two storage batteries which are mutually backup; or, the power system (20) comprises two internal combustion engines which are backup to each other; or, the power system (20) comprises any two of the power supply system, the storage battery and the internal combustion engine.

8. The mobile rail milling vehicle set according to claim 1, characterized in that the mobile rail milling vehicle set (100) is provided with a driver cab (30), a control module is arranged in the driver cab (30), each finish milling device (10) comprises a face milling cutter and a driving device for driving the face milling cutter, and the control module is in signal connection with all the driving devices to control the start or stop of each finish milling device (10).

9. The mobile rail milling vehicle set as claimed in claim 1, wherein the rail milling vehicle (1) further comprises a rail profile detection device, a rail corrugation detection device and two bogies (40), the two bogies (40) are respectively disposed at two ends of the bottom of the rail milling vehicle (1), the rail profile detection device is disposed on the bogie (40) at one end of the mobile rail milling vehicle set (100), and the rail corrugation detection device is disposed on the bogie (40) at the other end of the mobile rail milling vehicle set (100).