CN201587408U - Track milling/grinding trains - Google Patents

Abstract

The utility model relates to a track mills/grinds train, it is used for milling and/or grinding at least one running surface of reforming track through the periphery, preferably the convex part of the railhead cross section of reforming track especially rail, this convex part demonstrates the running surface, wherein track mills/grinds train (1) and includes following main part of arranging on driving direction (2): a first cab (3), a cooling component (4), a machine room (5), a tool room (6), an electrical room (7), a debris removal room (8), and a second cab (9). The rail milling/grinding train (1) comprises a completely modern carrying vehicle with a carriage (10) on which all the main components (3 to 9) are arranged and supported.

Description

Track milling/grinding trains

technical field

The present invention relates to a rail milling/grinding train for reshaping at least one running surface of a rail, preferably the head of a rail, in particular a rail, by peripheral milling and/or grinding The convex portion of the cross section is reshaped, wherein the convex portion represents the running surface.

Background technique

It is known to reshape worn rails by peripheral milling, ie to give the rails a new profile. A milling cutter is a tool with a turntable mounted to hold devices that are placed in turn into grooves in the milling cutter body. In this way, the turntables at the level of the peripheral milling cutter each generate a milling track facing the longitudinal direction of the track. However, due to lack of space, the number of turntables connected to such peripheral milling cutters is limited. Thus, by peripheral milling it is only possible to provide a small number of tracks lying next to each other in the longitudinal direction of the track and to be applied to the rail head by means of a turntable. This results in a large number of waves, necessitating a smoothing of the rail head after milling. It is known for this purpose to equip peripheral milling cutters with a plurality of cutting edges which represent the entire required cross-section. Multiple cutting edges are necessary to ensure that only slight errors in depth occur in the longitudinal direction of the rail. Here, it is disadvantageous that the voids and points that result from such smoothing extend across the entire machined cross section. That can cause noise and vibration when passed, and reduce lifespan.

Contents of the invention

The object of the present invention is to avoid those disadvantages and difficulties, the object of which is to provide a device of the kind described at first, which has at least one milling cutter of the rail cross section, by means of which it is possible to simultaneously obtain separately Smaller corrugations in the longitudinal direction and cross-section of the track are met by a separate milling operation in order to meet eg the smaller requirements of low-speed railways, whereas for high speeds the grinding operation described below can preferably be used.

This problem is solved by a track milling/grinding train according to claim 1 .

The track milling/grinding train of the present invention reshapes at least one running surface of the track by peripheral milling and/or grinding, preferably a convex portion of the rail head cross-section of the track, in particular the rail, wherein the convex portion Appears as a running surface. The train comprises the following main components arranged in driving direction: a first driver's cab, a cooling unit, a machine room, a tool room, an electrical room, a debris removal room, and a second driver's cab.

In another aspect of the invention, a track milling/grinding train comprises a fully modern delivery vehicle comprising a frame on which all major components are arranged and supported. The track milling/grinding train further comprises a vehicle drive, at least two reinforced bogies, an operating drive, an energy supply, braking equipment and safety devices. The track milling/grinding train according to the invention comprises at least two milling elements and at least one grinding element on each side.

The milling element can be configured as a milling wheel, which is provided with a plurality of milling edges arranged on the periphery of the milling wheel.

The rail milling/grinding train according to the invention also has means for producing relative movement between the track and the milling part and optionally the grinding part, a drive device for the milling part and for grinding when the grinding part is provided. Drive means for the component, and positioning the grinding component axis in a direction deviating from a plane perpendicular to the longitudinal direction of the track.

In an apparatus of the kind described initially, the object is achieved in that, in order to produce the desired cross-section by a single peripheral milling operation, more than 5, preferably 9, milling tracks next to each other in the longitudinal direction of the tracks are formed, Next, at least the running surface is optionally ground, preferably a convex portion of the rail head cross-section, wherein the convex portion represents the running surface.

Preferred parameters are described in the dependent claims.

As mentioned above, in order to meet greater demands such as faster movement speeds, the milling operation according to the invention is followed by a grinding operation, characterized in that, in order to reduce or smooth out the ripples running in the longitudinal direction of the train, optionally, Grinding the milled track, preferably immediately after the milling in the same job, for smoothing or leveling the fold line or the draft of traverse, respectively, between the axis of the grinding wheel and the plane perpendicular to the longitudinal direction of the track contains 0 degree angle deviation.

Description of drawings

Hereinafter, the present invention is explained in more detail through specific embodiments with reference to the accompanying drawings, wherein:

Figure 1 shows a side view of a train according to the invention,

Figure 2 shows a front view of the train of Figure 1,

Figure 3 shows an enlarged detail of the tool compartment of Figure 1,

Figure 4 shows an enlarged detail of the machine room of Figure 1, and

FIG. 5 shows an enlarged detail of the vehicle bogie of FIG. 1 .

Detailed ways

The track milling/grinding train 1 according to the invention as shown in Figures 1 to 5 comprises the following main components, arranged in the direction of travel as indicated by arrow 2: first driver's cab 3, cooling unit 4, machine room 5, tools room 6, electrical room 7, debris removal room 8, and second cab 9. Track milling train 1 for machining rail head surfaces on tracks for reshaping rail heads and removing track surface damage includes a completely new delivery vehicle with frame 10, all major components 3 to 9 and vehicle drive 11 (diesel engine), two reinforced bogies 12 and 13 (each with 3 axles), operating drive 14 (hydraulic pump), energy supply 15 (generator), braking equipment 16 and safety device 17 are arranged together And supported on the vehicle frame 10. The track milling train 1 according to the invention has two milling elements 61 , 62 and one grinding element 63 on each side (up to a total of four milling elements and two grinding elements). Allows simultaneous machining of one or two tracks. Train 1 is equipped with a CNC controller to achieve smooth and gentle processing without changing the metallographic structure. It has solid guide rails to absorb machining forces, vertical and horizontal adjusters for machining components, milling heads equipped with carbide-tipped teeth. The train enables quick tool changes and efficient suction to remove abrasive dust and debris. The present invention facilitates an easy, integrated tool change and tool deposit system, and allows for full assembly and start-up at the manufacturing site. The train of the invention provides high precision for the machining of the track cross-section. It provides very high chip removal performance at machining depths of 0.3 to 1.5mm per pass in the running surface area (up to 5mm in the gauge corner area, measured perpendicularly). One pass machining is complete, allowing for optimal metal removal conditions in relation to the CNC controller. The safe removal of the running surface renders rail heads with high surface quality running surfaces defective. Sensitive areas, such as electrical components and equipment close to the rail head, have few machining restrictions. The present invention allows dry processing without the need for coolants. Low noise level during operation. There are no flying sparks and no fire hazard, so it is a safe operation. It is suitable for self-propelled transport trains up to 100km/h, and also suitable for traction of transport trains up to 100km/h. The minimum turning radius is 150m, the maximum inclination/inclination angle is 33‰, the copy length is 400mm, and the gauge is 1435mm (1430mm-1470mm). Vehicle" (A).

The track milling/grinding train 1 according to the invention can be applied to reshape the longitudinal and transverse sections of the rail head surface in track without dismantling electrical components and signaling devices. This train is especially intended for the following applications: scar removal, reshaping of longitudinal and transverse sections, preventive maintenance of rail heads, removal of rolling surface defects on rail heads (e.g. rail head cracks, squats, etc. ), and processing to reduce emitted noise. Track milling/grinding trains are basically designed in accordance with the relevant regulations of DB AG, especially DB AG-instruction 931 and DS300 (EBO).

The vehicle of the train of the invention has a special frame structure to bear two milling parts 61, 62 and one grinding part 63 on each side, the hydraulic drive is operated by 2 3-axis bogies 12, 13 with a maximum axle load of 20t, First driver's cab 3 with operating panel for drive control and processing components, machine compartment 5 with diesel engine 11 and hydraulic pump 14 cooled by fan, tool or maintenance compartment 6 for switching console (drive control/working components Controls of the drive) electrical compartment 7, compartment 8 for debris removal and grinding dust, and a second cab 9 with drive controls. A water-cooled diesel engine with a very strong frame structure propels itself on the track, giving precise working speed through a special transmission, also changing the inclination of the track, as well as braking devices, modern safety equipment, ergonomic control of the cab and working place , an independent energy supply circuit for transmission and processing.

The mechanical design of Train 1 is as follows:

Axle load: up to 20t

Total weight: up to 120t

The total length of the processing vehicle: up to 23.8m

Bogie Center Distance: Maximum 15.3m

Height: up to 4.2m

Wheel diameter, new: 1000mm

Wheel diameter; worn: 960mm

Running speed: up to 100km/h

Working speed: 0.3-1.5km/h

Power processing components: Min 6×55kw

Blade diameter: about 600mm

Motor power: about 749kw

Parts of the brake unit:

Parking Brake: A spring that applies the brakes to each set of wheels.

Self-propelled vehicle brakes: direct effective pneumatic brake components.

Automatic Brakes - Transmitted to Train Systems: Indirect effective pneumatic brake components.

The brake is acted by a hydrostatic motor.

Parts of the energy supply system:

Electricity for vehicle components: Alternator: 24V

Electricity for processing: voltage 3×400V AC

Voltage fluctuations external supply 5%

Frequency 50Hz

Frequency fluctuation external device 1%

Lighting voltage 230/50V/Hz;

PLC voltage 24V DC.

The noise level is lower than 80dB(A).

The tool room 6 of the train 1 includes two pairs of track milling parts 61 and 62, that is, four idle milling stations, including milling tools with copying functions, guide parts, electrical components and control systems, PLC and CNC components, as well as hydraulic components, pneumatics and lubrication systems. The tool room 6 of the train 1 also includes a track grinding part 63, which is two idle grinding stations, including grinding tool parts with copying functions, guide parts, electrical components and control systems, PLC and CNC components , hydraulic components, pneumatic devices and lubrication systems.

600，以及2个闲置的磨盘

800/600。Train 1 also includes tool changing cranes, on the left and right sides of the vehicle. Train 1 also includes a tool room for 8 milling cutters and 4 grinding discs, and includes a tool pick-up for mounting milling cutters during vehicle stop, and an overhead crane (minimum load 250kg), as well as tool storage. Tool includes 4 free non-inserted milling cutters

600, and 2 idle millstones

800/600.

Milling parts with copying function are installed on the vehicle frame structure, a total of 4 milling parts, two milling parts on each rail, two milling parts on each side, each milling part can pass through The spindle drive is hydraulically adjusted vertically and horizontally. Tool spindle in prestressed ball bearings, drive of the tool spindle via a controllable spindle motor, hardened and ground mounting flange of the milling cutter, milling area covered by a protective cover, via the front of each working part The copying function of the copying ruler controls the milling depth through the height adjustment of the copying ruler by the AC servo motor, and the copying function of the side is controlled by mechanical or Device operation without contact.

Grinding unit 63 with profiling processing (copying) function is installed on the vehicle frame structure, a total of two grinding units, one unit on each side after the milling unit, and one grinding unit on each side; Hydraulically adjusted and horizontal, tool spindle in prestressed ball bearing, tool spindle drive via controllable spindle motor, hardened and ground mounting flange of grinding wheel, grinding wheel covered by protective cover area.

The abrasive member track-cross section mills 61, 62 are provided as peripheral mills and are described in more detail below. The milling cutter can be driven by a drive motor and a gear, whereby the direction of rotation is chosen to allow the track to be machined by a cutting milling method. A grinding element 63 is arranged next to the milling element, the grinding wheel of which can be driven by a drive gear, preferably also in the direction of rotation of the milling cutter, so that a smooth grinding of the track can be achieved. The grinding wheel is equipped with a system for adjusting the grinding depth, which allows continuous readjustment of the grinding wheel according to the wear of the track. Said system for adjusting the grinding depth comprises a measuring system for measuring the continuously decreasing diameter of the outer periphery of the grinding wheel; it is also possible to make use of the measurement data obtained from the measuring run time.

As soon as milling and grinding chips and grinding dust are present, they are sucked away by the suction devices 81 and 82 .

The copying function is implemented through the copying ruler on the front of each milled part. The milling depth is controlled by the height adjustment of the copying ruler by the AC servo motor. The copying function of the side is operated by mechanical or non-contact (contact less) equipment.

The guide part consists of the connection between the working part and the vehicle frame, the working part is positioned in the horizontal and vertical directions, and the guide rail is designed as a stable welded structure connected to the vehicle frame. The use of precise linear guides bears high-speed loads to absorb milling and grinding forces in both horizontal and vertical directions. The horizontal frame is driven by an AC servo motor. Working parts can be locked mechanically in the raised position.

With the wheel milling cutter 61, 62 according to the invention, it is possible to mill many milling tracks - even more than 9 - extending in the longitudinal direction of the track onto the rail head, whereby a great precision of the milling cross section can be obtained, i.e., Very close to the ideal cross-section of the rail head. For certain requirements, a rail head reshaped by the milling cutter according to the invention is sufficient without subsequent grinding, for example for operating speeds that are not too high. For more requirements, the milled track is subjected to a grinding operation such as that described above.

A fundamental advantage of the grinding method according to the invention is that rail heads on a plurality of adjacent milling tracks can be milled in a single working process. Particularly advantageously, the milling method according to the invention is combined with the grinding method according to the invention, whereby a complete removal of material and surfaces can also be achieved on extremely worn rails, since the milling method according to the invention largely above corresponds to an ideal track cross-section and requires only minor grinding, ie grinding involves removal of relatively little material, if any.

In this case, milling and grinding can be combined in a single working process to manufacture the running surface or the machined part of the rail head respectively, which meets the highest demands in terms of running quality, life and noise avoidance.

The tool changing system has a tool changing crane integrated into the maintenance room area and positioned above the machined components on the left and right side of the vehicle.

The tool changing room includes a lifting device for easy transfer of the tool from the working part to the maintenance room during a vehicle standstill and an overhead crane for manipulating the tool in the maintenance room. There is a tool store for milling cutter heads and grinding discs.

The relevant area of the rail head can be machined in one pass by using a rail milling/grinding train. The track is reshaped by using milling (perimeter milling) and grinding (perimeter grinding) in the same work process. With milling, cross-sectional deviations and longitudinal rail surface defects such as wrinkles, folds and waves are removed in one pass. This machining process is done with milling cutters equipped with multipurpose carbide inserts. With the milling cutter, the cross section is remachined with very high precision. After the milled part, the lapped part is used to machine the rail head to improve the surface quality. The grinding elements work in the peripheral direction in an inclined position. The machining operation has the following steps: starting the machining part; horizontally positioning the machining part supported by the inspection system; lowering the machining part by hydraulic drive; positioning the machining part supported by the copying device; depth.

The debris removal chamber 8 of the train 1 comprises debris suction means comprising a debris container suction 81 , a suction line 82 and a debris transfer device 83 . The suction pipe runs from the working part to the suction device. The suction equipment has a motor, fan, air filter and distribution unit. Two separate debris containers operate independently. Metal chips are removed from the container by conveyors during milling operations.

The train 1 also includes grinding dust suction, and includes a suction device (cyclone) and a suction line as well as a grinding dust container. The suction pipe runs from the grinding part to the suction unit with detachable tubing. The suction pipe runs from the processing part to the suction device. The suction equipment has a motor, fan, air filter and distribution unit. Grinding dust bin.

Claims (9)

1. track milling/grinding train, be used at least one operation surface by periphery milling and/or grinding reshaping track, be preferably the especially convex part of the rail head bench section of rail of reshaping track, this male portion branch shows as the operation surface, wherein, track milling/grinding train (1) is included in drives the following major part that direction (2) goes up layout:

First driver's cab (3) of the first driver operating room is provided;

The cooling-part (4) of cooling mechanism is provided;

The machine chamber (5) of holding installations;

The tool room (6) that holds tool device;

The electric panel room (7) that holds electrical installation;

Hold the chip of chip clearing device and remove chamber (8); And

Second driver's cab (9) of the second driver operating room is provided,

Described first driver's cab (3), described cooling-part (4), described machine chamber (5), described tool room (6), described electric panel room (7), described chip remove chamber (8) and described second driver's cab (9) is arranged and is supported on the vehicle frame (10).

2. track milling as claimed in claim 1/grinding train, it is characterized in that, described track milling/grinding train (1) also comprises the vehicle drive unit (11) that is used to drive described train, be used to support the bogie truck (12 and 13) of at least two reinforcements of described train, be used to drive the operation actuating device (14) of another device of described train, be used for providing the energy supply device (15) of energy to described train, the safety device (17 and 18) that is used to brake the brake equipment (16) of described train and is used for providing safety device to described train, described vehicle drive unit (11), described bogie truck (12 and 13), described operation actuating device (14), described energy supply device (15), described brake equipment (16) and described safety device (17 and 18) are arranged and are supported on the vehicle frame (10).

3. track milling as claimed in claim 1 or 2/grinding train, it is characterized in that, described track milling/grinding train (1) comprises at least one grinding component of at least two milling parts and every side, wherein, described milling parts are installed on the car structure structure, have milling parts on each guide rail at least, each side is installed at least one milling parts, each milling parts can hydraulically be adjusted on vertical and horizontal direction by spindle drive, described grinding component is installed on the car structure structure, grinding component of every side after the milling parts, each grinding component is hydraulically adjusted on vertical and horizontal direction by spindle drive.

4. track milling as claimed in claim 3/grinding train is characterized in that, described milling parts are set to the milling wheel, and described milling wheel is provided with a plurality of milling blades that are arranged in milling wheel periphery.

5. track milling as claimed in claim 1 or 2/grinding train, it is characterized in that, the described tool room (6) of described train (1) comprises two pairs of track milling parts (61 and 62), i.e. four idle milling stations, comprise the milling tool that has the copying functional device, guiding parts, electric elements and control system, control of PLC FPGA (Field Programmable Gate Array) and CNC element computerized numberical control, and Hydraulic Elements, pneumatics and lubricating system, wherein, described milling parts are installed on the car structure structure, two milling parts on each guide rail, each side is installed two milling parts, and each milling parts can hydraulically be adjusted on vertical and horizontal direction by spindle drive.

6. as a claim 1 or 2 described track milling/grinding trains, it is characterized in that, the described tool room (6) of described train (1) comprises track grinding component (63), i.e. two idle grinding stations, comprise the grinding device parts that have the copying functional device, guiding parts, electric elements and control system, control of PLC FPGA (Field Programmable Gate Array) and CNC element computerized numberical control, Hydraulic Elements, pneumatics and lubricating system, wherein, described grinding component is installed on the car structure structure, grinding component of every side after the milling parts, each grinding component is hydraulically adjusted on vertical and horizontal direction by spindle drive.

7. track milling as claimed in claim 1 or 2/grinding train is characterized in that having:

Be used between described track and described milling parts and described grinding component, producing the mobile device that relatively moves,

The grinding driving arrangement that is used for the milling driving arrangement of milling parts and is used for grinding component,

The edge deviates from the axis registration device perpendicular to the axis of the direction location grinding component of the face of track longitudinal direction.

8. track milling according to claim 7/grinding train is characterized in that, the α that described grinding component departs from from the face perpendicular to the track longitudinal direction is 1 to 20 °, preferred 5 to 12 °, and more preferably about 8 °.

9. as claim 7 or 8 described track milling/grinding trains, it is characterized in that in order to adjust different departing from, the location of the axis of described grinding component is interchangeable according to the face perpendicular to the track longitudinal direction.

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