CN111684133A

CN111684133A - Processing device for track facilities in urban areas

Info

Publication number: CN111684133A
Application number: CN201880087045.3A
Authority: CN
Inventors: W.孔普休伯; M.格劳尔
Original assignee: Lizen Machinery Manufacturing And Foundry Co ltd
Current assignee: Linsinger Engineering Co.,Ltd.
Priority date: 2017-11-21
Filing date: 2018-11-20
Publication date: 2020-09-18
Also published as: AT520384B1; WO2019100090A1; EP3714102A1; AT520384A4

Abstract

The invention relates to a processing device for rail installations in urban areas, comprising a travel drive (5), a processing drive (6) and a processing tool (7) which defines a profile, is driven in rotation and is mounted in a suspended manner on a shaft (10) arranged in a housing (11), wherein the processing tool (7), the housing (11) and the shaft (10) are arranged on a chassis (2) having wheels (3) and can be placed on a rail head (13) to be processed by means of a feed drive (8). In order to design a device of the type mentioned above such that it has such a compact design that it can be used to treat rail installations in urban areas not only above ground but also below ground, it is proposed that the treatment tool (7) be designed in the form of a pot and be connected at the end to the shaft (10) with the bottom of the treatment tool (7), wherein a circumferential cover of the side of the treatment tool (7) that is to be subjected to the cutting at least partially circumferentially surrounds the shaft (10) and the bearings (12) that are located closer together.

Description

Processing device for track facilities in urban areas

Technical Field

The invention relates to a processing device for rail installations in urban areas, comprising a travel drive, a processing drive and a processing tool which is profiled or otherwise rotationally driven and is mounted in a suspended manner on a shaft arranged in a housing, wherein the processing tool, the housing and the shaft are arranged on a chassis and can be placed on a rail head to be processed by means of a feed drive (Zustelltrieb).

Background

Mobile devices, in particular rail vehicles, are known, which are intended for processing the railway bed or track bed of a standard-gauge railway

But has a process driver, a feed driver and a process tool (patent document WO2013109945 a 1). Similar devices are also shown, for example, in patent document GB 255176A, US 4615150A, US 4583327a or US 1988138A. Due to the high reaction forces occurring during the treatment, the treatment device must on the one hand have a correspondingly high rigidity and on the other hand have a powerful energy supply, wherein this is usually achieved in that the diesel units and the hydraulic and/or electrical auxiliary units on the uppermost supply level comprise the relevant peripheral devices. However, the disadvantage here is that this is accompanied by a larger size and a higher overall weight of the apparatus, so that such mobile processing devices cannot be used in urban areasUse in the field, in particular because the railway foundations there are not designed for such high wheelset loads and because of the infrastructure present there only a limited structural height is possible. Furthermore, this type of device increases undesirable or impermissible noise and exhaust gas pollution in urban areas, in particular in subway shafts.

Disclosure of Invention

The object of the invention is therefore to design a device of the type mentioned at the outset in such a way that it has a compact design that it can be used for treating above-ground and underground track systems in urban areas.

The invention solves the technical problem posed by the fact that the treatment tool is of pot-shaped design and is connected at the end face to the shaft with the base of the treatment tool, wherein the lateral circumferential cover of the treatment tool, which is responsible for the cutting or cutting (schneidtraged), at least partially circumferentially surrounds the shaft and the bearing located closer together. According to this measure, the normal force component of the reaction force generated during the treatment can be guided by the tool into the bearing in such a way that the bending moment loading of the shaft and thus the bending of the shaft can be reduced. In other words, since, according to the inventive features, the imaginary envelope curve of the pot-shaped treatment tool lies within a section plane through the bearings located closer together in the direction of the longitudinal axis of the shaft, only a small lever arm can be formed between the bearing force and the force application point of the reaction force on the treatment tool. Since the shaft is loaded with a smaller bending moment according to the invention, it can be dimensioned correspondingly smaller than in the case of conventional rail treatment devices. This in turn results in smaller dimensions of the housing, the processing drive, the chassis and the travel drive adapted thereto, as a result of which the overall size and the overall weight of the processing device according to the invention can be reduced. The use of the device in urban areas is therefore made possible only by the technical features according to the invention. Furthermore, a better dimensional stability of the treated rail can be achieved by the resulting higher shaft stiffness and the resulting smaller vibrations and oscillations, which can also prove to be advantageous in smaller dimensional tolerances of urban rail installations.

In order to be able to move continuously or steplessly in a vertical direction along a track (contour) with constant force and over a large force range by means of a guide shoe or guide shoe (fuhrungsschuh) and to achieve a defined milling depth adjustment with the least possible number of components required for this purpose, the feed drive can be connected to the travel drive by means of a transmission and has an electrohydraulic linear actuator without a hydraulic supply line. Owing to this feature, the central hydraulic unit of the device can be dispensed with, as well as the separate hydraulic tank and the required supply lines, whereby the overall size and weight of the device can be reduced. In rail treatment, the use of hydraulic cylinders is advantageous in principle on the basis of their inherent power density in order to position a reference point, which is usually preset by a guide shoe, sliding on the upper edge of the rail in the vertical direction on the rail in order to support the treatment tool and at the same time to press against the upper edge of the rail with a defined pressing force. This ensures a uniform treatment of the rail head and avoids surface irregularities. A particularly advantageous construction condition results if the hydraulic cylinder, the hydraulic pump, the servo valve and the pressure accumulator can be combined to form a linear actuator which is equipped with a control block integrated in the transmission housing, so that a construction which is as compact as possible is achieved. Since the shaft can be dimensioned smaller in the manner described above and there is the possibility of combining the feed drive and the processing drive into a common drive which is connected to the travel drive via a corresponding transmission, these features can interact in an advantageous manner in such a way that installation space can be saved and, depending on the design, a corresponding free area can be realized close to the ground in order to comply with the ground clearance required for the orbital movement of the processing device.

In order to provide sufficient traction during the treatment in the case of a low overall weight of the treatment device and consequent loss in the frictional mass, the rolling surfaces of the wheels can have traction or friction linings. Therefore, the reaction force generated during the process can be reliably transmitted between the rail and the device so that the device does not slip. According to one embodiment, in order to compensate for losses in the friction mass, circumferential grooves can be provided in the region of the running surface of the wheel, in which grooves elastic rings are respectively inserted, which transmit a portion of the wheel support force (Aufstanddskraft) to the rail and, depending on the physics, achieve a higher coefficient of friction by selecting the material of the friction partners. This in turn leads to an increase in the transferable tractive force. With this arrangement, it is possible to transmit the generated treatment forces always reliably, even with a reduced overall mass of the device. In order to be able to drive the running gear on track systems of different designs in urban areas, the gear wheels arranged on the chassis can be adjusted laterally in the direction of the transverse axis of the chassis in order to adjust the track width.

In order to achieve both a horizontal positioning of the processing tool and a horizontal positioning of the wheels, each transverse or lateral chassis side can be provided with a module having a separate processing drive, a feed drive and a processing tool, which are connected to the travel drive via a transmission, wherein the module and the wheels can be adjusted transversely in the direction of the transverse axis of the chassis in order to adjust the track width. According to this measure, not only is a movement of the processing tool in the horizontal direction (of the rail profile) possible, but in particular a pressing force can also be applied to the side of the respective rail head facing the processing device, so that a guidance and a uniform profiling of the rail can be achieved by the processing tool. In one embodiment, the wheels of the processing device on the individual axles can be suspended on the chassis frame in such a way that they can be moved relative to one another along carriages which are each arranged transversely to the chassis and form a guide. This makes it possible to use the device even in urban areas where the track gauges of the track installations differ. Here, the lateral adjustment of the assembly can likewise be effected by means of a carriage arranged on the chassis, similarly to, but independently of, the adjustment of the track of the wheels.

In order to ensure that the energy supply of the travel drives, the treatment drives and the feed drives of the treatment device does not form an additional noise source and an exhaust gas source, so that the treatment device can be used advantageously in urban areas, an electrical energy accumulator or an electrical energy store can be provided, which is arranged in the vehicle frame of the device and supplies the respective drive with energy via a common electrical energy distribution system. This makes it possible to avoid conversion losses between two or more different energy forms, thus increasing the overall efficiency of the energy supply system. Furthermore, the electrically powered treatment device offers the advantage with regard to its operation in urban areas that, due to its design, no exhaust gas pollution and only low noise generation occur. Also, highly combustible fuels or hydraulic fluids are not required for this purpose, so that safe operation is also achieved in densely populated urban areas. Furthermore, the rechargeable design of the energy store as a battery makes it possible for the overhead lines present in urban areas to be advantageously used for charging the energy store, for example during the journey to the point of use or the return from the point of use. Since the longitudinal forces generated by the processing device according to the invention during the processing must be suppressed due to its compact, lightweight design, so that the processing device does not have an acceleration opposite to the processing direction, provision can also be made for the travel drive to be controlled by a regulator as a function of the forces occurring in the longitudinal direction of the track on the processing means, and for the released braking energy to be recovered in the electric energy accumulator during the braking operation of the travel drive. In this case, the energy recovery device can be designed to be able to recover the braking energy that would otherwise be dissipated as heat, and to be able to recover the braking energy for operation.

In order to be able to increase the energy capacity of the operating device, it is proposed to couple an additional movable energy source on a separate chassis to the processing device and to the energy distribution system for charging the energy storage. This increases the range of travel (or range) or the operating time of the device, wherein both the number and the energy form of the mobile energy sources coupled to one another and forming the supply circuit can be selected at will. Furthermore, the total mass of the treatment device acting as a wheelset load on the rail system can be increased by one or more coupled mobile energy sources in such a way that, due to the higher tractive forces, forces occurring in the longitudinal direction of the rail during the treatment process do not have to be suppressed. Therefore, the energy efficiency of the device can be further improved thereby.

Drawings

The technical solution of the invention is exemplarily shown in the drawings. In the drawings:

fig. 1 shows a schematic side view of an embodiment of a treatment device according to the invention;

FIG. 2 shows a section on a larger scale taken along the line II-II in FIG. 1;

FIG. 3 shows a schematic side view of a feed drive and a treatment drive of a device according to the invention and

fig. 4 shows a section on a larger scale taken along the line IV-IV of fig. 3.

Detailed Description

An embodiment of the treatment device according to the invention can have a vehicle frame 1, a chassis 2 with wheels 3, an electrical energy accumulator 4, an energy distribution system, a travel drive 5, a treatment drive 6, a treatment tool 7, a feed drive 8 and a suction device 9 with a scrap collecting container 10.

Fig. 4 shows a treatment tool 7 which is mounted on a shaft 10 by means of screws and is mounted in a floating manner on the shaft 10, the treatment tool 7 being able to be designed, for example, as a pot-shaped milling head or else as a grinding wheel. Furthermore, the shaft 10 can be arranged in the housing 11 and partially circumferentially enclosed by the pot-shaped treatment tool 7, so that an imaginary plane, which is normal to the longitudinal axis of the shaft and extends through the bearing 12 located closer, intersects the treatment tool 7. For protection, the treatment tool 7 can be surrounded by a cover or hood 14 which is open downward for the treatment of the rail head 13, wherein a suction device 9 can be connected to the cover 14, which suction device guides the chips formed during the treatment into the collection container 10. Furthermore, a larger free area 15 can be produced by a compact design of the processing tool 7.

Fig. 3 shows a feed drive 8, which feed drive 8 can have an electrohydraulic linear actuator 16 and a guide shoe 17, so that a reference point sliding on the upper edge of the rail can be positioned in the vertical direction on the rail to support the processing tool 7 and at the same time can be pressed against the upper edge of the rail with a defined pressing force.

Each lateral chassis side 2 may have a separate process drive 6, feeder drive 8 and process tool 7, which are combined into a common assembly 18, as shown in fig. 2. The processing drive 6 and the feed drive 8 can be combined here, for example, to form one drive and connected to the travel drive 5 by a belt drive 19 according to fig. 4. Furthermore, it can be provided that not only the assembly 18 but also the wheels 3 of the device can be adjusted laterally in the direction of the transverse chassis axis by means of a slide 20 arranged on the frame 1 in order to adjust the track width.

According to an embodiment of the solution according to the invention, the travel drive 5, the treatment drive 6 and the feed drive 8 can each have an electric motor.

Claims

1. A processing device for rail installations in urban areas, having a travel drive (5), a processing drive (6) and a processing tool (7) which defines a profile, is driven in rotation and is mounted in suspension on a shaft (10) arranged in a housing (11), wherein the treatment tool (7), the housing (11) and the shaft (10) are arranged on a chassis (2) with wheels (3) and can be placed on a rail head (13) to be treated by means of a feed drive (8), characterized in that the processing tool (7) is designed in the shape of a pot and is connected to the shaft (10) at the end with the bottom of the processing tool (7), wherein a circumferential cover of the side of the processing tool (7) that is to be cut off at least partially circumferentially surrounds the shaft (10) and the bearing (12) located closer together.

2. Treatment device according to claim 1, characterized in that the feed drive (8) is connected to the travel drive (2) by a transmission and has an electrohydraulic linear actuator (16) without a hydraulic supply line.

3. Treatment device according to claim 1 or 2, characterized in that the rolling surface of the wheel (3) has an adhesive or friction facing.

4. Treatment device according to one of claims 1 to 3, characterized in that each lateral chassis side is provided with an assembly (18), which assembly (18) has a separate treatment drive (6), a feed drive (8) and a treatment tool (7) which are connected to the travel drive (5) by means of a transmission, wherein the assembly (18) and the wheels (3) can be adjusted transversely in the direction of the chassis transverse axis for adjusting the track width.

5. Method for operating a processing device according to one of the preceding claims, characterized in that the travel drive (5), the processing drive (6) and the feed drive (8) are supplied with energy from an electrical energy accumulator (4) by means of a common electrical energy distribution system, wherein the travel drive (5) is controlled by a regulator as a function of the force occurring in the longitudinal direction of the track on the processing means (7), and the braking energy released is recovered in the braking operation of the travel drive (5) into the electrical energy accumulator (4).

6. Method according to claim 5, characterized in that for charging the energy accumulator (4) an additional movable energy source on a separate chassis is coupled to the processing device and to the energy distribution system.