Nail punching machine for driving in or pulling out rail spikes of a rail track

Abstract

A nail punching machine for driving in or pulling out rail spikes comprises a driving mechanism, which is driven by means of an electric drive motor. The electric drive motor is supplied with electric power by means of an accumulator. The nail punching machine is held by an operator by means of at least one handle.

Claims

1. A nail punching machine for one of the group of driving in and pulling out rail spikes of a rail track, the nail punching machine comprising: at least one handle for holding the nail punching machine; a driving mechanism with a striking mechanism for driving a rail spike into a tie; an electric drive motor for driving the driving mechanism; an accumulator for supplying the electric drive motor with electric power; and a vibration decoupling device for decoupling vibrations of the at least one handle and the driving mechanism, the vibration decoupling device defining a decoupling plane, which separates a working side from an operating side, the driving mechanism being arranged on the working side, the at least one handle and the accumulator being arranged on the operating side; wherein no mechanical connections for driving the driving mechanism extend through the decoupling plane.

2. The nail punching machine according to claim 1, wherein the vibration decoupling device has at least one vibration damper for configuring the decoupling plane between the driving mechanism and the at least one handle.

3. The nail punching machine according to claim 1, wherein the electric drive motor is arranged on the working side of the decoupling plane.

4. The nail punching machine according to claim 1, wherein the accumulator is exchangeably mounted to a supporting frame and connected with a handle.

5. The nail punching machine according to claim 1, wherein a control device is arranged on the operating side of the decoupling plane.

6. The nail punching machine according to claim 1, wherein, exclusively, lines are running through the decoupling plane.

7. The nail punching machine according to claim 1, comprising a cooling device for cooling at least one of the group comprising the electric drive motor and the driving mechanism.

8. The nail punching machine according to claim 1, wherein the electric drive motor is arranged in an upper section of a pipe, turned away from the rail track.

9. The nail punching machine according to claim 1, wherein the electric drive motor is arranged in a lower section of a pipe, facing the rail track.

10. The nail punching machine according to claim 1, wherein the striking mechanism is displaceable in an exclusively linear manner in an axial direction of the nail punching machine.

11. The nail punching machine according to claim 1, wherein the decoupling plane is free of mechanical connections for driving the driving mechanism.

12. A nail punching machine for one of the group of driving in and pulling out rail spikes of a rail track, the nail punching machine comprising: a handle for holding the nail punching machine; a driving mechanism comprising a striking mechanism for driving a rail spike into a tie; an electric drive motor for driving the driving mechanism; a housing, the driving mechanism and the electric drive motor being arranged in an interior of the housing; an accumulator for supplying the electric drive motor with electric power; a supporting frame connected to the handle and the accumulator; and a vibration decoupling device for decoupling vibrations of the handle and the driving mechanism, the vibration decoupling device defining a decoupling plane, the decoupling plane separating a working side from an operating side, the driving mechanism being arranged on the working side, the handle and the accumulator being arranged on the operating side, the vibration decoupling device comprising at least one vibration damper, a first mounting element mounted to the supporting frame and a second mounting element mounted to the housing, the at least. one vibration damper being in contact with the first mounting element and the second mounting element; wherein no mechanical connections for driving the driving mechanism extend through the decoupling plane.

13. The nail punching machine according to claim 12, wherein at least a portion of the handle is arranged laterally on the supporting frame.

14. The nail punching machine according to claim 12, wherein the vibration decoupling device comprises another vibration damper, the another vibration damper connecting the handle to the first mounting element.

15. The nail punching machine according to claim 12, wherein the decoupling plane is free of mechanical connections for driving the driving mechanism.

16. A nail punching machine for one of the group of driving in and pulling out rail spikes of a rail track, the nail punching machine comprising: a handle for holding the nail punching machine; a driving mechanism comprising a striking mechanism for driving a rail spike into a tie; an electric drive motor for driving the driving mechanism; a housing comprising a housing interior space, the driving mechanism and the electric drive motor being arranged in the housing interior space; an accumulator for supplying the electric drive motor with electric power; and a vibration decoupling device for decoupling vibrations of the handle and the driving mechanism, the vibration decoupling device defining a decoupling plane, the decoupling plane separating a working side from an operating side, the driving mechanism being arranged on the working side, the handle and the accumulator being arranged on the operating side, the vibration decoupling device comprising at least one vibration damper, the at least one vibration damper being located at a spaced location from the housing; wherein no mechanical connections for driving the driving mechanism extend through the decoupling plane.

17. The nail punching machine according to claim 16, further comprising: a supporting frame connected to the handle and the accumulator, the vibration decoupling device comprising a first mounting element mounted to the supporting frame and a second mounting element mounted to the housing, the at least one vibration damper being in contact with the first mounting element and the second mounting element.

18. The nail punching machine according to claim 17, wherein the vibration decoupling device comprises another vibration damper, the another vibration damper connecting the handle to the first mounting element.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1 shows a perspective view of a nail punching machine according to a first embodiment,

(2) FIG. 2 shows a sectional view of the nail punching machine in FIG. 1,

(3) FIG. 3 shows a sectional view of a nail punching machine according to a second embodiment, and

(4) FIG. 4 shows a sectional view of a nail punching machine according to a third embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) In the following, a first embodiment of the invention is described with reference to FIGS. 1 and 2. An electrically drivable nail punching machine 1 has an electric drive motor 2, which is connected via a driving shaft 3 with a driving mechanism 4. The driving mechanism 4 is configured in the usual manner as an axial driving mechanism, which is displaceable exclusively in a linear manner in the direction of a rotation axis 5 of the drive motor 2.

(6) The driving mechanism 4, for example, is configured as an axial striking mechanism. The driving mechanism 4 is known and common.

(7) The driving mechanism 4 is exchangeably coupled with a tool 6. The tool 6 is configured as a hammer for driving in a rail spike 7. The tool 6 comprises a hammer shaft 8 and a hammer head 9. The tool 6 configured as a hammer is known and common. The nail punching machine 1 with the tool 6 configured as a hammer thus serves as a spike driver.

(8) The electric drive motor 2, the driving shaft 3 and the driving mechanism 4 are arranged in a pipe 10. The pipe 10 has an axial length L and is divided into an upper section 11 and a lower section 12. The upper section 11 has an axial length L.sub.O, whereas the lower section 12 has an axial length L.sub.U. For the length L.sub.O preferably applies: L.sub.O<0.5 L, in particular L.sub.O<0.4 L, and in particular L.sub.O<0.3 L. On the other hand, for the length L.sub.U preferably applies: L.sub.U<0.5 L, in particular L.sub.U<0.6 L, and in particular L.sub.U<0.7 L.

(9) The electric drive motor 2 is arranged on an end of the pipe 10, turned away from the tool 6, in the upper section 11 and outside the lower section 12. On the other hand, the driving mechanism 4 is arranged near the tool 6 in the lower section 12 and outside the upper section 11. The driving shaft 3 is arranged in the pipe 10 and couples the electric drive motor 2 with the driving mechanism 4. The driving shaft 3 thus runs in the upper section 11 and the lower section 12. The driving shaft 3 is mounted in the pipe 10 by means of a bearing 13.

(10) The nail punching machine 1 further comprises a supporting frame 14, on which a first handle 15 and a second handle 16 are arranged laterally. An accumulator 17 is exchangeably mounted to the supporting frame 14. The accumulator 17 is connected with a third handle 18. The accumulator 17 supplies the electric drive motor 2 and a control device 19 with electric power. The control device 19 comprises a control 20 mounted to the supporting frame 14 and an operating unit 21 arranged on one of the handles 15, 16. The operating unit 21, for example, has at least one operating agent for actuating the electric drive motor 2.

(11) For decoupling vibrations of the handles 15, 16, 18 from the driving mechanism 4 and the electric drive motor 2, the nail punching machine 1 has a vibration decoupling device 22. The vibration decoupling device 22, on the operating side, comprises a mounting element 23, which is mounted to the supporting frame 14, and, on the working side, mounting elements 24 which are mounted to the pipe 10. The vibration decoupling device 22 further on comprises a number of first vibration dampers 25 which connect the mounting element 23 on the operating side with the mounting elements 24 on the working side. As an example, the nail punching machine 1 has four vibration dampers 25, which are arranged around the rotation axis 5 of the electric drive motor 2. Moreover, the vibration decoupling device 22 comprises a number of second vibration dampers 26, which connect the handles 15, 16 with the mounting element 23 on the operating side and the supporting frame 14. The vibration dampers 25, 26 are made of an elastomer material, for example a rubber material.

(12) The vibration decoupling device 22 or the vibration dampers 25 configure a decoupling plane E, which decouples or separates a working side 27 from an operating side 28. On the working side 27, the pipe 10, the electric drive motor 2, the driving shaft 3 and the driving mechanism 4 as well as the tool 6 are arranged. On the other hand, on the operating side 28, the supporting frame 14 with the handles 15, 16 as well as the accumulator 17 with the handle 18 and the control device 19 are arranged.

(13) Through the decoupling plane E, exclusively, electric lines 29 for actuation and energy supply of the electric drive motor 2 are running from the operating side 28 to the working side 27. The electric lines 29 are only depicted schematically in FIG. 2. The electric lines 29 are protected by a rubber bellow 30.

(14) The nail punching machine 1 serves for driving in rail spikes 7. The rail spikes 7 serve for connecting rails and ties of a rail track. By means of the control device 19, the electric drive motor 2 is actuated by an operator in a way that the hammer head 9 is displaced downwards and upwards in a linear manner from the driving mechanism 4 along the rotation axis 5, with the result that the hammer head 9 drives in a rail spike 7 in the desired manner. During this process, the operator holds the nail punching machine 1 with both hands on the handles 15 and 16. Due to the vibration decoupling device 22, forces or vibrations produced by the electric drive motor 2 and the driving in by means of the driving mechanism 4 are effectively dampened, with the result that the operating side 28 is decoupled from vibrations of the working side 27. The accumulator 17 here works as a counter mass on the operating side 28 and causes an effective vibration dampening.

(15) When the accumulator 17 is discharged, it can be easily exchanged by means of the handle 18 and be replaced by a charged accumulator 17. Due to the fact that the control device 19 is arranged on the operating side 28, it is protected from vibrations.

(16) In the following, a second embodiment of the invention is described with reference to FIG. 3. In contrast to the preceding embodiment, the tool 6 is configured as pliers for pulling out rail spikes 7. The nail punching machine 1, due to the configuration of the tool 6, thus serves as a spike puller. The tool 6 is exchangeably connected with the driving mechanism 4, with the result that the nail punching machine 1, via a tool change and the use of a tool 6 configured as a hammer, can also be used as a spike driver. For pulling out a rail spike 7, the pliers are drawn in the direction of the decoupling plane E by means of the driving mechanism 4 and the electric drive motor 2, with the result that the rail spike 7 to be pulled is pulled out of the tie and into the pipe 10. The operator, during this process, supports the nail punching machine 1 on the tie with the free end of the pipe 10. With regard to the further setup and the further functions, reference is made to the preceding embodiment.

(17) In the following, a third embodiment of the invention is described with reference to FIG. 4. In contrast to the preceding embodiments, the electric drive motor 2 is arranged in the lower section 12, i.e. outside the upper section 11 of the pipe 10. The electric drive motor 2 is directly connected with the driving mechanism 4, with the result that no additional driving shaft and no corresponding bearing are required. The nail punching machine 1 further on comprises a cooling device 31 with a cooler 32, a pump 33 and a coolant line 34. The cooler 32 and the pump 33 are arranged on the supporting frame 14 on the operating side 28. The coolant line 34 leads from the cooler 32 and the pump 33 through the decoupling plane E into the pipe 10 and to the drive motor 2 and the driving mechanism 4. By means of the pump 33, a coolant is pumped through the coolant line 34, with the result that heat produced by the drive motor 2 and the driving mechanism 4 is dissipated from the pipe 10 and conveyed to the cooler 32. By means of the cooler 32, the heat supplied to the coolant is again dissipated to the surroundings. With regard to the further setup and the further functions of the nail punching machine 1, reference is made to the preceding embodiments.