阅读说明：本技术 用于维护轨道的架空线系统的设备和方法 (Apparatus and method for maintaining an overhead line system of a track ) 是由 G·施密德 于 2020-02-27 设计创作，主要内容包括：用于维护轨道的架空线系统(2)的设备(10)包括操纵装置(11)和移位装置(12)。移位装置(12)用于在运输位置和作业位置之间移位操纵装置(11)。在作业位置中,操纵装置(11)到达架空线系统(2)并且可以通过工具(W)进行维护作业。至少一个传感器(22,23,24)用于控制和/或监测操纵装置(11)。因此,设备(10)能够对架空线系统(2)进行简单、有效和安全的维护。(An apparatus (10) for servicing an overhead line system (2) of a track comprises a handling device (11) and a displacement device (12). The displacement device (12) serves to displace the handling device (11) between the transport position and the working position. In the working position, the handling device (11) reaches the overhead line system (2) and maintenance work can be carried out by means of the tool (W). At least one sensor (22, 23, 24) is used for controlling and/or monitoring the operating device (11). The apparatus (10) thus enables simple, efficient and safe maintenance of the overhead line system (2).)

1. An apparatus for maintaining an overhead line system of a track, the apparatus comprising:

-a handling device (11), which handling device (11) is used for handling a tool (W); and

-a displacement device (12), which displacement device (12) is used for displacing the handling device (11) between a transport position and a working position,

it is characterized in that the preparation method is characterized in that,

the device also comprises at least one sensor (22, 23, 24) for controlling and/or monitoring the operating device (11).

2. The apparatus of claim 1,

the displacement device (12) forms at least one displacement axis (V)_L，V_S) For displacing the handling device (11) in a vertical direction (z).

3. The apparatus according to claim 1 or 2,

the displacement device (12) forms at least one linear axis (V)_L) For linearly displacing the manipulation device (11).

4. The device according to at least one of the preceding claims,

the displacement device (12) forms at least one axis of rotation (V)_S) For swiveling the handling device (11).

5. The device according to at least one of the preceding claims,

the actuating device (11) comprises at least three, in particular at least four, in particular at least five movement axes (B)₁To B₆)。

6. The device according to at least one of the preceding claims,

the device further comprises at least one electrically insulating element (19) for preventing undesired current flow due to the overhead line voltage (U).

7. The device according to at least one of the preceding claims,

the actuating device (11) and/or the displacement device (12) comprises at least one electric drive (A)_B，A_V)。

8. The device according to at least one of the preceding claims,

the actuating device (11) and/or the displacement device (12)) Comprising at least one fluid-operated drive (A)_B，A_V)。

9. The device according to at least one of the preceding claims,

the handling device (11) comprises a tool holder (17), in which tool holder (17) a tool (W) is accommodated.

10. The device according to at least one of the preceding claims,

the apparatus further comprises a tool magazine (18) for supplying tools (W).

11. The device according to at least one of the preceding claims,

the device further comprises an energy generator (31) and/or an energy storage (32).

12. The device according to at least one of the preceding claims,

the device further comprises a control unit (25) for controlling and/or monitoring the handling means (11).

13. The device according to at least one of the preceding claims,

the device further comprises at least one protection element (15) for protecting the handling means (11) in the transport position.

14. A mobile maintenance system for maintaining an overhead line system of a track, the mobile maintenance system comprising:

-a chassis (6);

-a plurality of wheels (7) rotatably mounted on the chassis (6); and

-a device (10) according to at least one of claims 1 to 13, which device (10) is arranged on the chassis (6).

15. A method for maintaining an overhead line system of a track, the method comprising the steps of:

-providing a device (10) according to at least one of claims 1 to 13;

-transporting the apparatus (10) to a place of use with the handling device (11) in the transport position;

-transferring the handling device (11) from the transport position to the working position by means of the displacement device (12); and

-performing a maintenance operation by means of the manipulator (11) and tool (W).

Technical Field

The present invention relates to an apparatus and method for overhead line system maintenance of a track.

Background

During rail operation, the overhead line system of the track often fails. For example, a typical cause of a fault is an insulator defect or an undesirable interfering object, such as a tree branch, located on the overhead line. To maintain the disturbed overhead line system, the overhead line is powered down so that the disturbance can be manually eliminated by the staff. On the one hand, this can lead to an impaired or interrupted rail operation, since the overhead line must be completely de-energized in sections. On the other hand, a fault may occur during a power outage, posing a threat to the lives of workers.

A machine for maintaining an overhead line is known from AT 402184B, which comprises a lifting platform and a moving device arranged on the lifting platform. The displacement device has a pivotable and telescopic crane jib, at the end of which a displacement element is arranged.

Disclosure of Invention

The object of the present invention is to provide a device which enables simple, effective and safe maintenance of an overhead line system of a track.

This object is achieved by a device having the features of claim 1. According to the invention, the handling device is used for automatically handling tools. The manipulating device may be operated in a partially automated or fully automated manner. The handling device is arranged on the displacement device. The displacement device serves for displacing the handling device between the transport position and the working position. In the transport position, the overhead line system is outside the range of the handling device, while in the working position, the overhead line system is within the range of the handling device. The displacement means may preferably be actuated by a driver.

In the transport position of the handling device, the apparatus has a compact transport state, so that the apparatus can be transported easily, efficiently and safely to the place of use. For this purpose, the device is arranged, for example, on a vehicle, in particular a rail, road or off-road vehicle, or on a rail or trailer or semitrailer. At the place of use, the handling device is transferred from the transport position to the working position by means of the displacement device. In the working position, the overhead line system to be maintained is within the scope of the handling device. The maintenance work required in the working position can be carried out automatically by the handling device and the tools arranged thereon. For example, the tool is designed as a clamp. The maintenance work can be performed in a fully automatic manner, for example by means of at least one sensor and a control unit, and/or in a partially automatic manner by means of a remote control actuated by a worker located at a safe distance. After the maintenance operation is completed, the handling device is transferred back to the transport position by the displacement device and is transported away from the place of use in a compact transport state. The apparatus thus enables simple, efficient and safe maintenance of the overhead line system.

The at least one sensor is arranged in particular on the actuating device and/or the displacement device. Preferably, the at least one sensor is designed as an optical sensor. The at least one sensor is for example a radar sensor and/or a laser scanner and/or a camera. In particular, the at least one sensor is used for detecting the object to be treated and/or for detecting the object to be removed. The at least one sensor serves in particular to detect an accommodation space for the displacement device and/or the handling device and/or a working space of the displacement device and/or the handling device. Detecting the accommodation space and/or the working space enables sensing of a person located in the accommodation space and/or the working space. For example, the displacement device and/or the handling device are automatically stopped when a person is detected in the receiving space and/or the working space. Furthermore, the at least one sensor is used in particular for controlling or positioning the actuating device. Preferably, the at least one sensor is designed for measuring the overhead line voltage. This enables the device to check whether the voltage of the overhead line has been disconnected. In particular, the at least one sensor is electromagnetically or electrically decoupled, for example by an optocoupler. The at least one sensor is used to automatically (e.g., fully or partially automatically) perform maintenance tasks. In order to perform the maintenance work completely automatically, the object to be treated or removed is detected by the at least one sensor and the handling device is controlled or regulated, positioned and monitored completely automatically by the at least one sensor and the control unit. During semi-automatic execution of the maintenance operation, a remote control is formed by the at least one sensor and the control unit. By means of the remote control, the operator operates the device, in particular the displacement device and/or the handling device and/or the tool, via the at least one sensor and the screen. In this case, the operator is located at a safe distance from the overhead line system, for example in a cabin. The cabin is designed in particular to be electromagnetically shielded.

Preferably, the device, in particular the handling device and/or the displacement device, is configured to be electrically insulating. This means that maintenance work can be performed without disconnecting the overhead line from the power supply. Thus, the railway operation is not affected. There is no danger since the staff is not in the vicinity of the overhead line at any time and, in particular, does not touch the overhead line or any possibly charged object at any time.

The apparatus preferably comprises a tank. The container is particularly designed as a container, for example a standard container or an ISO container. In the transport position, the handling device and in particular also the displacement device are arranged within the box, so that the apparatus appears as and has the dimensions of a box. Thus, the device can be easily and safely transported to the place of use. During transport, the handling device is protected from the environment inside the box. At the place of use, the handling device is transferred from the transport position to a working position outside the housing by means of the displacement device. In the working position, maintenance work can then be carried out in the manner described above. The displacement device is preferably fastened to the housing, in particular in the interior space of the housing. In the transport position, the displacement device is preferably arranged inside the box, while in the working position the displacement device is arranged partly inside the box and partly outside the box. The housing has at least one housing opening for displacing the handling device between the transport position and the working position. The at least one box opening can be opened or closed and/or permanently opened as desired, for example by means of an associated protective element. Preferably, the box has two opposite long sides, two opposite short sides, a lower side and an opposite upper side. Preferably, the at least one tank opening is formed on a short side and/or a long side and/or an upper side of the tank. Preferably, the box may be reversibly fastened to the chassis by fastening elements.

The device according to claim 2 ensures simple, efficient and safe maintenance of the overhead line system. The at least one displacement axis is designed in particular as at least one linear axis and/or as at least one swivel axis. The at least one displacement axis serves for displacing the handling device in the vertical direction. The vertical direction is in particular parallel to the direction of gravity. In particular, the vertical direction is oriented substantially perpendicular to the chassis to which the device is fastened. By means of the at least one displacement axis, the handling device can be displaced between a transport position and a working position, which is located at a higher position relative to the transport position.

The device according to claim 3 ensures simple, efficient and safe maintenance of the overhead line system. By means of the at least one linear axis, the handling device can be displaced between the transport position and the working position in a simple manner. Preferably, the at least one linear axis extends in a vertical direction and/or a horizontal direction. Preferably, the linear axis extends substantially parallel to the direction of gravity. In particular, the displacement device has a mounting element to which the actuating device is fastened. For example, the displacement device is designed as a lifting platform. In particular, the lift platform includes a platform and a scissor type motion mechanism forming a linear axis. The platform is used for mounting the manipulator. The displacement device is designed, for example, as a sliding unit. The sliding unit includes a slider and a linear guide. The linear guide forms a linear axis. The slide serves as a mounting element for mounting the actuating device. The slide is guided on a linear guide. The displacement device can be actuated in particular by a drive.

The device according to claim 4 ensures simple, efficient and safe maintenance of the overhead line system. The at least one axis of rotation preferably extends parallel to the horizontal direction. In order to form the at least one swivel axis, the displacement device has, in particular, a swivel bridge to which the actuating device is fastened. The swivel bridge serves as a mounting element for mounting the actuating device. The displacement device can be actuated in particular by a drive.

The device according to claim 5 ensures simple, efficient and safe maintenance of the overhead line system. The axis of motion is designed in particular as the axis of revolution. Preferably, the handling device comprises at least one vertical swivel axis, at least one horizontal swivel axis and/or at least one freely orientable swivel axis. At least one of these pivot axes is preferably pivotable by at least 360 °, i.e. designed as a pivot axis. The handling device is designed in particular as a multi-axis robot, for example an industrial robot. The multi-axis robot is secured to the displacement device. In the working position, the multi-axis robot is aligned, in particular in the vertical direction, so that the multi-axis robot reaches the overhead line system in a simple manner. Preferably, the handling device has at least three and/or at most six axes of movement.

The device according to claim 6 ensures simple, efficient and safe maintenance of the overhead line system. Due to the at least one electrically insulating element, maintenance work can also be carried out when there is an overhead line voltage. Therefore, it is not necessary to disconnect the voltage of the overhead wire. The at least one insulating element is in particular a part of the tool and/or a part of the handling device and/or a part of the displacement device. Preferably, the at least one insulating element is designed in the following way: electrical insulation is provided between the tool and the handling device and/or between the handling device and the displacement device and/or between the displacement device and the chassis.

The device according to claim 7 ensures simple, efficient and safe maintenance of the overhead line system. Since the individual movement axes or all movement axes of the manipulation device and/or the individual displacement axes or all displacement axes of the displacement device can be actuated by means of a respective electric drive, the device can be controlled in a simple manner. The at least one electric drive and/or the at least one sensor and/or the control unit can be designed to be electromagnetically shielded and/or electromagnetically decoupled. Thus, possible disturbances and/or possible damage due to electromagnetic radiation and/or undesired current flows can be avoided. For example, if an electrically actuable operating device is used, the design of the electrical and/or electronic device is such that the overhead line can be contacted when switched on without damaging or disturbing the device as a result of the overhead line voltage. The control unit and/or the required sensors are designed separately from the actuating device and/or the displacement device, for example, by way of opto-couplers. The electric drive and/or the actuator are protected, for example, by a faraday cage and/or a faraday structure of the handling device and/or the displacement device. The actuating device and/or the displacement device can be actuated directly by means of the at least one electric drive and/or indirectly by means of the at least one electric drive via the at least one electrically insulated transmission mechanism. The electrically insulating transmission means is for example a cable pulling means.

The device according to claim 8 ensures simple, efficient and safe maintenance of the overhead line system. Since the operating device and/or the displacement device are designed to be fluid-operated, in particular exclusively fluid-operated, the apparatus is not disturbed and/or damaged by electromagnetic radiation and/or undesired current flows as a result of the overhead line voltage. The manipulation means and/or displacement means may be, for example, pneumatically and/or hydraulically operated or actuated. The at least one fluid-operated drive is designed, for example, as a single-acting and/or double-acting piston-cylinder unit and/or as a fluid motor, in particular a hydraulic motor and/or a pneumatic motor. For providing the pressure fluid, the apparatus comprises a pressure fluid supply unit. The pressure fluid supply unit comprises a pressure fluid generator and/or a pressure fluid reservoir. The pressure fluid generator is designed in particular as a pump. Preferably, the pressure fluid generator may be electrically operated. Preferably, the device comprises a pneumatic pressure fluid supply unit and/or a hydraulic pressure fluid supply unit. The pressure fluid line and/or the pressure fluid connection are preferably designed to be electrically insulating. Thus, the steering device and/or the displacement device can be operated without current. The pressure fluid supply unit, in particular the pressure fluid generator and/or the pressure fluid valve, may be electrically actuatable.

The device according to claim 9 ensures simple, efficient and safe maintenance of the overhead line system. The tool is preferably designed as a clamp or as a combined split-clamping tool. The clamps may be actuated, for example, electrically, pneumatically, and/or hydraulically. The tool holder and/or the tool are preferably designed to be electrically insulating. The clamp may comprise an electrically insulated transmission mechanism. The separation-clamping tool can be used to cut and clamp the interfering object to be removed.

The device according to claim 10 ensures simple, efficient and safe maintenance of the overhead line system. Due to the presence of the tool magazine, the handling device is provided with suitable tools for performing various maintenance tasks. The device thus enables automatic tool change. Automatic tool change can be performed in such a way that: the handling device automatically places the tools no longer needed in the tool magazine and/or automatically picks up the needed tools from the tool magazine. If desired, a tool changer may be provided in addition to the tool magazine. In this case, the tool changer transfers the tool, which is no longer required, from the handling device into the tool magazine and stores it in the tool magazine. The tool changer therefore takes the desired tool from the tool magazine and transfers it to the handling device. The tools accommodated in the tool magazine are preferably designed to be electrically insulating.

The device according to claim 11 ensures simple, efficient and safe maintenance of the overhead line system. Since the device comprises an energy generator and/or an energy storage, the device can operate largely autonomously. The device can thus be operated independently of the external energy supply. The energy generator and/or the energy storage device are used in particular for providing electrical energy. Preferably, the energy generator comprises a power unit having a fuel-operable driver and a power generator driven by the power unit. The fuel-operated drive can be, for example, a diesel drive of a rail vehicle. The energy store is designed in particular as a battery. Alternatively or additionally, the device may have a connection for connecting to an external power source.

The device according to claim 12 ensures simple, efficient and safe maintenance of the overhead line system. The control unit is preferably electromagnetically or electrically decoupled, for example by means of at least one optocoupler. The control unit is used to automatically (e.g. fully automatically or partly automatically) perform the maintenance work. The control unit is in signal communication with at least one sensor, in particular, for controlling and/or monitoring the operating device.

The device according to claim 13 ensures simple, efficient and safe maintenance of the overhead line system. The at least one protection element serves to protect the handling device and the displacement device from environmental influences during transport. The protective element can be displaced relative to the actuating device and/or the displacement device. The at least one protective element can be actuated, in particular, by a drive. Preferably, the at least one protection element is configured as a displaceable cover which is closed in the transport state and opened in the working state. The at least one protective element is designed, for example, as a roller blind and/or as a combined cover.

It is also an object of the invention to provide a mobile maintenance system which enables a simple, effective and safe maintenance of an overhead line system of a track.

This object is achieved by a displacement maintenance system having the features of claim 14. Due to the arrangement of the device on the chassis, the device can be easily, efficiently and safely transported to and from the place of use. The device may be secured to the chassis in a fixed or reversible manner. For example, the mobile maintenance system is designed as a rail vehicle, an on-highway vehicle, an off-highway vehicle, a rail vehicle, or a trailer. Preferably, the mobile maintenance system has its own traction drive. Alternatively, the mobile maintenance system may not have its own traction drive, but may be designed as a rail car or trailer and transported by vehicle to and from the point of use. If the mobile maintenance system is designed as a rail vehicle or a rail car, the device has a compact transport state so that no limits (lichtrackprofile) are violated, and the device can be transported to the place of use easily, efficiently and safely.

It is also an object of the invention to provide a method that enables simple, efficient and safe maintenance of an overhead line system of a track.

This object is achieved by a method having the features of claim 15. The advantages of the method according to the invention correspond to the advantages of the device according to the invention that have been described. The method according to the invention can be further improved by providing, inter alia, a mobile maintenance system according to claim 14. Maintenance work on the overhead line system can be done with the overhead line voltage applied or disconnected. Preferably, the overhead line system or the overhead lines are not powered down to perform maintenance operations. Maintenance work is therefore preferably carried out in the presence of the overhead line voltage. After the maintenance operation is completed, the handling device is moved from the operating position back into the transport position and is transported away from the place of use. Preferably, the maintenance operation comprises removing the disturbance, in particular the disturbing object, from the overhead line.

Drawings

Further features, advantages and details of the invention will become apparent from the following description of several embodiments, in which:

fig. 1 shows a side view of a mobile maintenance system for maintaining an overhead line system of a track according to a first embodiment in a transport state;

FIG. 2 shows a side view of the mobile maintenance system according to FIG. 1 in an operational state;

fig. 3 shows a side view of a mobile maintenance system for maintaining an overhead line system of a track according to a second embodiment in an operational state; and is

Fig. 4 shows a side view of a mobile maintenance system for maintaining an overhead line system of a track according to a third embodiment in an operational state.

Detailed Description

A first embodiment of the present invention is described below with reference to fig. 1 and 2. The mobile maintenance system 1 is designed as a rail vehicle. The maintenance system 1 is used for maintaining an overhead line system 2 of a track. The overhead line system 2 comprises an overhead line mast 3 to which an overhead line 5 is fastened by means of an insulator 4. In the operating state, an overhead line voltage U is applied to the overhead line 5.

The maintenance system 1 designed as a rail vehicle comprises a chassis 6. A plurality of axles 7 having wheels 7 fastened thereto are rotatably mounted on the chassis 6. The wheels 7 are guided on rails 8 of the track. The maintenance system 1 has an electric traction drive 9. The electric traction drive 9 is supplied with electric energy from the overhead line 5 or from an electric power supply unit. The power supply unit is described in more detail below.

The maintenance system 1 has a device 10 for maintaining the overhead line system 2. The apparatus 10 comprises a handling device 11 and a displacement device 12, the displacement device 12 being used for displacing the handling device 11 between a transport position and a working position. Fig. 1 shows the maintenance system 1 in a transport state, in which the handling device 11 and the displacement device 12 are in a transport position. In the transport state, the handling device 11 and the displacement device 12 are accommodated completely in the accommodation space 13 of the maintenance system 1 or the rail vehicle. The receiving space 13 is delimited by the chassis 6, the side walls 14 and the protective element 15.

The protective element 15 is arranged on the upper side of the receiving space 13 opposite to the chassis 6. A maintenance opening 16 is formed at an upper side of the accommodation space 13, the maintenance opening 16 being closed by the protection member 15 in the transportation state, and the maintenance opening 16 being released and exposed by the protection member 15 in the working state. For this purpose, the protective element 15 can be displaced manually or by means of a drive which is not shown in greater detail. The protective element 15 is designed, for example, as a combined cover or top cover which can be displaced along the side wall 14.

The handling device 11 is designed as a multi-axis robot. The handling device 11 is for example an industrial robot. The handling device 11 has six axes of movement, indicated in detail by B₁To B₆. Axis of motion B₁To B₅Designed as the axis of revolution. Axis of motion B₆Designed as a rotation axis. For accommodating the tool W, the handling device 11 has a tool holder 17. The structure of the manipulator 11 or multi-axis robot is known and common.

The handling device 11 is used to handle the received tool W. To actuate the movement axis B₁To B₆The operating device 11 having an associated electric drive A_B1To A_B6. Electric drive A_B1To A_B6Usually with A_BAnd (4) showing.

To provide the tools W required for maintenance, the apparatus 10 includes a tool magazine 18. The tool box 18 is disposed in the accommodating space 13. Additional tool changers may be provided if desired.

The handling device 11 is connected to the displacement device 12 by an electrically insulating element 19. The handling device 11 is electrically insulated from the displacement device 12 and the chassis 6 by an insulating element 19. An undesired current flow due to the overhead line voltage U is prevented by the insulating element 19.

The displacement device 12 is fastened to the chassis 6. The chassis 6 extends in the x direction and in the y direction perpendicular to the x direction. The displacement means 11 form a displacement axis V_L. Axis of displacement V_LFor displacing the manipulator 11 in the vertical z-direction. The z direction is perpendicular to the x and y directions. The x, y and z directions form a cartesian coordinate system.

The displacement device 12 is designed as a lifting platform. The displacement device 12 comprises a platform 20 and a scissor type movement mechanism 21. The handling device 11 is connected to the platform 20 via an insulating element 19. A scissor type motion mechanism 21 is connected to platform 20 and chassis 6. The scissors-type movement mechanism 21 being able to be actuated by an electric drive A_VAnd (4) actuating. Axis of displacement V_LDesigned as a linear axis, so that the handling device 11 can be displaced linearly in the vertical z-direction. The z-direction extends substantially parallel to the direction of gravity. The handling device 11 can thus be displaced towards or away from the overhead line 5.

For maintenance work, the device 10 has sensors 22, 23, 24 and a control unit 25. The first sensor 22 is designed as a camera. The first sensor 22 is arranged in the region of the tool holder 17 at the handling device 11. The second sensor 23 is designed as a camera and is arranged in the receiving space 13 on one of the side walls 14. The third sensor 24 is designed as a voltage measuring sensor and is arranged on the operating device 11. The third sensor 24 is used to measure the overhead line voltage U.

The sensors 22, 23, 24 are in signal communication with a control unit 25. The control unit 25 is used to form a remote control. For this purpose, the control unit 25 has at least one screen 26 and operating elements 27 and a computer 28. The control unit 25 is arranged in a cabin 29.

For supplying electrical energy, the device 10 has an energy supply unit 30. The energy supply unit 30 comprises an energy generator 31 for providing electrical energy and an energy storage 32. The energy supply unit 30 is arranged on the chassis 6. The energy generator 31 includes, for example, a power unit having a driver operable by fuel and a power generator driven by the power unit. The energy store 32 is designed, for example, as a battery. Electric energy can also be supplied to the electric traction drive 9 by means of the energy supply unit 30. The energy supply unit 30 may comprise a rectifier, an inverter and/or a converter, which are not shown in more detail.

The working principle of the mobile maintenance system 1 is described below:

fig. 1 shows an interfering object S located on an overhead line 5. The interfering object S is for example a tree branch. The interfering object S will be removed by the mobile maintenance system 1.

First, the maintenance system 1 is in a transport state as shown in fig. 1. In the transport position shown in fig. 1, the handling device 11 and the displacement device 12 are arranged in the receiving space 13. The protective element 15 closes the service opening 16, so that the handling device 11 and the displacement device 12 are protected from the environment. In the transport state, the maintenance system 1 is driven to the place of use by means of the traction drive 9. For example, electric power is supplied to the interfering object S through the overhead wire 5 and through the power supply unit 30 at the use site.

At the place of use, the maintenance system 1 is transferred from the transport state to the operating state shown in fig. 2. For this purpose, the protective element 15 is first opened, so that the service opening 16 is opened or exposed. Subsequently, the handling device 11 and the displacing device 12 are remotely controlled by the personnel in the cabin 29. The sensors 22, 23 transmit the captured images to a screen 26 so that a worker can remotely control the device 10 using the operating elements 27.

The manipulator 11 first picks up the appropriate tool W from the tool magazine 18. The tool W is, for example, a jig. The tool W is designed in the following way: by winding about the axis of movement B₆To open or close the clamp.

Electric drive A_VThe displacement device 12 is then actuated so that the handling device 11 follows the displacement axis V_LLinearly displaced in the z-direction towards the overhead line 5. The displacement device 12 is locked in the working position. The manipulator 11 is now in the desired working position.

The tool W designed as a gripper and the handling device 11 can now be used to remove the interfering object S from the overhead line 5. The overhead line 5 does not need to be powered down. Therefore, the overhead line voltage U can be applied during the maintenance work. When a tool change is required, the manipulator 11 places the tool W no longer required in the tool magazine 18 and removes the required tool W from the tool magazine 18. The removed interfering object S can then be placed in the receiving space 13 and transported away with it.

When the maintenance work is completed, the handling device 11 and the displacement device 12 are moved back into the transport position. The displacement device 12 is locked in the transport position. The protective element 15 is closed again. The manipulator 11 stores the tools W that are no longer needed in the tool magazine 18. The mobile maintenance system 1 can now be moved to another place of use.

A second embodiment of the present invention is described below with reference to fig. 3. In contrast to the first embodiment, the mobile maintenance system 1 is designed as a rail car (Schienenwagen). The mobile maintenance system 1 is transported to the place of use by rail vehicles and is transported away from the place of use again. Thus, the mobile maintenance system 1 does not have its own traction drive.

Furthermore, the displacement device 12 and the drive a of the actuating device 11_VAnd A_BIs fluid operated. This means that the driver a_VAnd A_BMay be actuated by a pressurized fluid. Driver A_VAnd A_BDesigned for example as a piston-cylinder unit and/or as a fluid motor. Driver A_VAnd A_BFor example pneumatically by compressed airActuated and/or hydraulically actuated by a pressure fluid (e.g., hydraulic oil). To this end, the device 10 comprises a pressure fluid supply unit 33 with a pressure fluid generator 34 and a pressure fluid reservoir 35. The compressed-air generator 34 is designed as an electrically operable pump. For supplying electrical energy, the mobile maintenance system 1 has a connection 36 to an external power supply line 37. The external power supply line 37 is connected to, for example, the power supply of the rail vehicle. The pressure fluid reservoir 35 is connected to the actuator a via a pressure fluid line, a pressure fluid valve and a pressure fluid connection, not shown in detail_VAnd A_B. The pressure fluid line, the pressure fluid valve and the pressure fluid connection are designed to be electrically insulated. For further construction and further operating principle, reference is made to the first embodiment.

A third embodiment of the present invention is described below with reference to fig. 4. In contrast to the previous embodiments, the displacement axis V of the displacement device 12_SDesigned as the axis of revolution. For this purpose, the displacement device 12 has a carriage 38 and a swivel bridge 39. The carrier 38 is fastened to the chassis 6. The carrier 38 is fork-shaped. Swivel bridges 39 are mounted on both sides of the carrier 38. Axis of displacement V_SExtending parallel to the y-direction. Driver A_VDesigned to be electrically powered. For further construction and further operating principle, reference is made to the previous embodiments.

The individual features of the different embodiments may be combined in any desired manner.