CN114908623A - Grinding machine for grinding rails of rails - Google Patents

Abstract

The invention relates to a grinding machine (1) for grinding a rail (2) of a rail (3), capable of being manually displaced on a rail (3) in the longitudinal direction (13) of said rail, comprising a support frame (5), the support frame (5) is designed to roll on the rail (2) via guide rollers (4), and on the support frame (5) are arranged energy modules (6) and work modules (7), Wherein the working module (7) comprises a pivotable grinding unit (10). Here, the grinding unit (10) comprises a motor (28) and a grinding tool (29) driven by the motor (28), the grinding unit (10) is supported so as to be able to pivot about a longitudinal axis in the motor frame (9), and The motor frame (9) is arranged to be adjustable relative to the support frame (5).

Description

Grinding machine for grinding rails of rails

The present application is a divisional application of Chinese patent application CN201880010910.4.

technical field

The present invention relates to a grinder for grinding rails of a rail, which can be manually displaced on the rail, the grinding machine comprising a support frame designed to roll on the rail via guide rollers and to support An energy module and a work module are arranged on the frame, wherein the work module includes a pivotable grinding unit.

Background technique

In order to remove defects on rails, such as weld beads at rail joints, surfacing and guard rails, and burrs on steel rail heads, various rail grinders are available. Grinders of this type are known from DE 20 2010 007 264 U1, DE 202 10 014 U1 and DE 202 10 021 U1.

SUMMARY OF THE INVENTION

The object of the present invention is to improve the state of the art for grinding machines of the type mentioned at the outset.

According to the invention, this object is achieved by a grinding machine according to claim 1 .

Advantageous further refinements of the invention become apparent from the dependent claims.

The invention proposes that the grinding unit comprises a motor and a grinding tool driven by the motor, the grinding unit is supported so as to be pivotable about a longitudinal axis in the motor frame, and the motor frame is arranged to be adjustable relative to the support frame. Thanks to this compact design and flexible adjustability of the moveable supported elements, almost any point of the rail profile can be processed with high precision and efficiency.

In an advantageous embodiment of the invention, it is proposed that the grinding unit is able to pivot at least 180° relative to the motor frame. Thus, both sides of the rail profile can be processed in an advantageous manner with one grinding unit in several working positions.

In another advantageous embodiment, the motor is of a gekapselt design. Thus, the motor is protected from abrasive dust generated during working operations.

A further refinement of the device according to the invention proposes that the mill comprises a heat exchanger and a pump, and that the electric motor is designed with a liquid cooling system. With this liquid cooling system, a large amount of heat can be dissipated in a technically simple manner and with low noise, and a stable performance of the electric motor can be ensured.

In an alternative embodiment, advantageously, the mill comprises a compressor and the electric motor is designed with compressed air cooling. As a result, the electric motor can be designed in a compact manner and the cooling system requires little maintenance. Here, it is also possible to connect the cooling system on-site to an external construction site compressor in order to thus reduce the weight of the grinding machine even further.

A simple embodiment of the invention proposes that the electric motor is connected to the energy module via sliding contacts. The sliding contacts ensure flexible energy transmission to the electric motor.

Another advantageous embodiment of the invention proposes that the electric motor is connected to the energy module via a flexible cable and a plug connection. This flexible connection ensures greater freedom of movement of the motor during work operations. Via the plug connection, the energy module can be disconnected from the electric motor without problems for transport.

A further refinement of the invention provides that the motor frame is supported to be vertically adjustable in the intermediate frame, and that the intermediate frame is adjustable in the lateral direction relative to the support frame. Thereby, an even greater freedom of movement of the grinding unit and thus a more flexible working operation is ensured for precise handling of the rails.

In a further embodiment of the invention it is proposed that the motor holder is arranged to be pivotable about a vertical axis relative to the intermediate frame for free angular positioning of the grinding tool. Therefore, the grinding tool is placed on the rail surface at a predetermined angle and the rail is precisely machined.

In an advantageous further development, the intermediate frame is supported on the support frame by means of manually releasable roller elements. Thereby, the intermediate frame is displaced almost frictionlessly with respect to the support frame, and the intermediate frame including the grinding unit can be detached from the support frame in a simple manner for easier transport.

In another advantageous embodiment of the invention, the internal combustion engine/generator unit is arranged as an energy module. Thereby, continuous duty operation independent of the power source is ensured.

In an advantageous further development, the energy module includes an electrical energy store. For this purpose, electrical energy is temporarily stored to allow the grinder to operate for longer periods of time. By appropriately sizing the accumulator, it is possible to temporarily shut down (eg, in a tunnel) or completely omit the service combustion engine/generator unit.

A simple embodiment of the invention proposes that the support frame adopts a segmented design, wherein the distance between the guide rollers associated with one rail and the guide rollers associated with the other rail can be adjusted. Thereby, the grinder can be adapted to any gauge.

In the next embodiment of the invention it is proposed that the energy module is connected to the support frame by means of fasteners which can be manually released. Therefore, it is very convenient to transport the energy module separated from the support frame.

Basically, the present invention combines several separate machines that were previously required. (rail head grinder, rail waist grinder, switch grinder and deburring machine).

Description of drawings

The invention will now be described by way of example with reference to the accompanying drawings. Schematically shown in the accompanying drawings:

Fig. 1 is the side view of grinding machine;

Figure 2 is a detailed top view of free-angle positioning;

Figure 3 is a detailed view of a motor frame with a grinding unit; and

4 to 7 are working positions of the grinding unit.

Detailed ways

The grinder 1 shown in FIG. 1 is a hand-guided machine for processing the rails 2 of the rails 3 . The grinder comprises a support frame 5 designed to roll on the rail 2 via guide rollers 4, at the ends of which are arranged energy modules 6 and work modules 7. The working module 7 includes an intermediate frame 8 , a motor frame 9 and a grinding unit 10 . The energy modules 6 are arranged on the support frame 5 via quick-release fasteners 11 so as to be mechanically releasable. In order to adjust the gauge, the support frame 5 adopts a segmented design. By means of the handle 12, the grinder 1 can be manually displaced in the longitudinal direction 13 of the rail.

The intermediate frame 8 supported on the support frame 5 via the roller elements 14 , and thus the motor frame 9 comprising the grinding unit 10 , is arranged to be displaced in the transverse direction 16 of the track via the joystick 15 . The joystick 15 is connected to the intermediate frame 8 by a link arrangement 17 . The intermediate frame 8 can be manually fixed to the support frame 5 via locking means 18 .

The motor holder 9 supported in the intermediate frame 8 and the grinding unit 10 can be adjusted in the vertical direction 20 by means of the first handwheel 19 . Via the belt drive 22 , the second handwheel 21 causes a rotational movement of the grinding unit 10 supported on the longitudinal axis 23 in the motor frame 9 .

In a variant not shown, the rotational movement can be transmitted by a worm gear instead of the belt drive 22 .

FIG. 2 shows a top view of the grinding unit 10 including the free-angle positioning device 24 . For this purpose, the motor frame 9 comprising the grinding unit 10 is supported on a vertical axis 25 in the intermediate frame 8 to pivot freely by an angle α. The required pivot area and thus the grinding unit 10 is adjusted relative to the rail 2 via the two handles 26 and locked via the clamping lever 27 .

FIG. 3 shows a detailed view of the motor frame 9 including the grinding unit 10 . The grinding unit 10 includes a motor 28 and a grinding tool 29 . The grinding tool 29 is shown as a disc grinding wheel and can be replaced by other grinding tools (cup grinding wheels) depending on the specific application.

Here, the grinding tool 29 is directly connected to the rotor shaft of the electric motor 28 , so that the design of the grinding unit 10 is particularly compact. In this way, it is possible to pivot the grinding unit 10 about the longitudinal axis 23 by at least 180°, thereby ensuring flexible applicability. The electrical connection to the energy module 6 is made via sliding contacts or flexible cables.

Figures 4 to 7 show partial views of the grinding unit 10 in different working positions. In FIG. 4 , the grinding unit 10 is on the side facing the track center 30 . The grinding unit 10 is in the initial position, oriented horizontally and processing the inside of the steel rail head 31 . In FIG. 5, the outer side of the rail head 31 is processed. For this purpose, the grinding unit 10 is raised via the first handwheel 19, displaced by the joystick 15 and lowered again. FIG. 6 shows the grinding unit 10 rotated by 90° via the second handwheel 21 for processing the inner rail waist 32 . In FIG. 7, the outer rail waist 32 is processed.

Claims (14)

1. A grinder (1) for grinding a rail (2) of a rail (3), which can be manually displaced on said rail (3) in the longitudinal direction (13) of said rail, so The grinding machine comprises a support frame (5) designed to roll on the rails (2) via guide rollers (4) and on which energy modules are arranged (6) and a working module (7), wherein the working module (7) comprises a pivotable grinding unit (10), characterized in that the grinding unit (10) comprises an electric motor (28) and is driven by the electric motor (28) A driven grinding tool (29), the grinding unit (10) being supported so as to be pivotable about a longitudinal axis in the motor frame (9), and the motor frame (9) being arranged to be able to be relative to all The support frame (5) is adjusted. 2. The grinding machine (1) according to claim 1, characterized in that the grinding unit (10) is pivotable by at least 180° relative to the motor frame (9). 3. The grinding machine (1) according to claim 1 or 2, characterized in that, the motor (28) adopts a package design. 4. The grinding machine (1) according to claim 3, characterized in that the grinding machine (1) comprises a heat exchanger and a pump, and the electric motor (28) is designed with a liquid cooling system. 5. The grinding machine (1) according to claim 3, characterized in that the grinding machine (1) comprises a compressor and the electric motor (28) is designed with compressed air cooling. 6. The grinding machine (1) according to any one of claims 1 to 5, characterized in that the electric motor (28) is connected to the energy module (6) via sliding contacts. 7. The grinding machine (1) according to any one of claims 1 to 5, characterized in that the electric motor (28) is connected to the energy module (6) via a flexible cable and a plug connection. 8. A grinding machine (1) according to any one of claims 1 to 7, characterized in that the motor frame (9) is supported for vertical adjustment in the intermediate frame (8) and all The intermediate frame (8) is adjustable in the lateral direction relative to the support frame (5). 9. Grinding machine (1) according to claim 8, characterized in that the motor frame (9) is arranged to be pivotable about a vertical axis relative to the intermediate frame (8) in order to align the The grinding tool (29) is positioned at a free angle. 10. A grinding machine (1) according to claim 8 or 9, characterized in that the intermediate frame (8) is supported on the support frame (5) by means of manually releasable roller elements (14). 11. Grinding machine (1) according to any one of claims 1 to 10, characterized in that the internal combustion engine/generator unit is arranged as an energy module (6). 12. The grinding machine (1) according to any one of claims 1 to 11, characterized in that the energy module (6) comprises an electrical energy store. 13. The grinding machine (1) according to any one of claims 1 to 12, characterized in that the support frame (5) adopts a segmented design, wherein the The distance between the guide rollers (4) and said guide rollers (4) associated with the other rail (2) can be adjusted. 14. A grinder (1) according to any one of claims 1 to 13, characterized in that the energy module (6) is connected to the support by means of quick release fasteners (11 ) that can be manually released rack (5).

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