JP5054322B2 - Method and machine for removing defective rail sections of a track - Google Patents

Description

In the present invention, one gap and two rail ends are formed by the first separation and cutting, and one auxiliary rail is welded to the two rail ends after the second separation and cutting. The present invention relates to a method for removing defective rail portions from a rail of a welded track having a rail stress of as well as an actual rail temperature, and a machine for preparing rail welding.

  From U.S. Pat. No. 4,929,816, British Patent No. 0326794, U.S. Pat. No. 4,983,801, and U.S. Pat. No. 6,515,249, many methods or devices for welding rail ends are known. .

Also, according to US Pat. No. 5,469,796, it is known to transport the rails to a laying place with a special machine. A rail pulling device and a welding device are prepared by the first and second machines.
United States Patent No. 4,929,816 GB 0326794 Specification US Pat. No. 4,983,801 US Pat. No. 6,515,249 United States Patent No. 546979 specification

  The object of the present invention is to provide a method in which a number of welds can also be carried out in an effective manner in order to improve the method described at the outset and to obtain the target rail stress.

According to the present invention, this problem is solved in the method described in the beginning. B) After the first separation and cutting, the two rail ends are gripped by a rail pulling device that connects the rail ends to each other, and the tensile force is increased. In order to form the target stress after welding both ends of the auxiliary rail to the two rail ends after the second separation and cutting In order to calculate and select the required length of the auxiliary rail by the control and calculation unit , record the pulling force f required to pull the two rail ends and the actual rail temperature, c) the second time the separation cutting, the calculation interval based on the selected length of the auxiliary rail, at a distance from the first separation cut is solved by implementing while measuring the correspondingly distance.

  According to the method features of the present invention, the difference between the actual rail stress and the target rail stress can be detected in connection with removing the defective rail portion. In consideration of the detected difference, the required length of the play to be removed can be accurately defined according to the length of the auxiliary member (auxiliary rail). Auxiliary rails that are precisely prepared in relation to the length provide the desired rail stress and allow the required two welding processes to be carried out quickly. In an advantageous manner, the removal of the defective rail part and the preparation of the auxiliary rail, precisely defined with respect to the length, can be carried out independently of the welding process. Both the welding preparation and the welding itself can be carried out with optimum efficiency.

  Another object of the present invention is to provide a machine for preparing rail welding, which provides an optimal preparation for performing high-value welding with a target rail stress, particularly with high work efficiency.

This object is according to the invention in the machine according to claim 3, i.e. in a machine with a machine frame capable of running on a track by a rail running mechanism for preparing rail welding. A rail storage device for storing the rail is provided, and b) the drive device is provided with a height adjustable and rotatable crane jib for grasping and lowering the auxiliary rail, and c) the machine length A height-adjustable rail cutting saw mounted on a directionally extending saw guide, d) spaced apart from each other, formed to grip and pull the two rail ends maintaining with a rail catch of 2 pairs arranged, and the drive device height adjustably pulled supported by the rail by the device are provided on the machine frame, e) of the rail traveling mechanisms A pair of elevating struts arranged in the vicinity and fixed to the machine frame are provided, and the pair of elevating struts can be installed while being lowered on the track, and adjacent rail running mechanisms can be installed. It was solved by being able to lift from orbit.

  The resulting clearance is used by the rail puller to accurately detect the difference between the actual rail stress and the target value of the rail stress. This allows a machine having the features of the present invention to prepare an auxiliary rail with a precisely defined length, whereby the target rail stress is automatically obtained by subsequent welding with the rail end. It is done. In order to obtain the exact length of the defective rail part to be removed, a rail cutting saw slidably mounted along the guide is particularly advantageous. This also makes it possible to produce cut surfaces that extend exactly parallel to one another for the two rail ends in order to finally obtain a high-quality weld by welding the auxiliary members.

  Other claims and drawings show further advantages of the present invention.

Next, the present invention will be described in detail based on embodiments illustrated in the drawings. In the drawing,
FIG. 1 is a side view of a mechanical device for preparing rail welding,
FIG. 2 is a plan view of a rail pulling device for pulling two rail ends,
FIG. 3A to FIG. 3M are schematic side views of the mechanical device in various traveling sections.

  1 includes a first machine 2, a second machine 4 releasably connected to the first machine 2 via a connector 3, and the second machine 4 during work travel. And a third machine 5 that can be conveyed by the machine 4. Each of these machines 2, 4, and 5 has one machine frame 8 that can travel on the track 7 by the rail travel mechanism 6, and includes a travel drive device 9.

The drive device 11 is provided with a crane jib 12 that can be adjusted in height and is rotatable for grasping and lowering the auxiliary rail 14. The first machine 2 has a rail storage device 13 between a cab 10 and a crane jib 12 that can be adjusted in height and rotated by a drive device 11. The first machine 2 is configured to transport and store a plurality of auxiliary rails 14 of different lengths. A saw guide 16 extending in the machine longitudinal direction 15 is provided between the two rail travel mechanisms 6 on the lower side and the end side of the machine frame 8, and a rail cutting saw 17 is driven by the saw guide 16. 18 is slidably supported. When the rail cutting saw 17 is slid, the sliding distance is recorded by the distance measuring device 41. A pair of elevating struts 22 indicated by reference numeral 21 are coupled to the machine frame 8 in the immediate vicinity of each rail traveling mechanism 6, and the elevating struts 22 can be lowered onto the track 7 by the drive device 23. .

  A rail pulling device 20 fixed to the machine frame 8 so as to be adjustable in height by a drive device 19 is configured to grip two rail ends 24 of the rail 25 of the track 7. The device 26 is provided for driving or withdrawing a dog nail (rail nail). The height-adjustable polishing device 27 is used to polish the rail abdomen.

Second machine 4 is provided with a height-adjustable device 28 for releasing the anti-creeper (Schienenanke r), and a tie plate attached to the rail 25. In front of the rail traveling mechanism 6 in front, a height-adjustable conveying device 30 is provided, and the third machine 5 is conveyed to the track laying position by the conveying device 30. This third machine 5 likewise comprises a device 28 for releasing the anti-creeper.

  The rail pulling device 20, shown in detail in FIG. 2, has two pairs of rail catches 32 that are configured to grip two rail ends 24 that are spaced apart from each other in the machine longitudinal direction 15. ing. By loading the two drive devices 33, the rail ends 24 can be pulled together. The force required for this can be recorded by the force measuring device 34. A temperature sensor device 35 is provided to detect the actual rail temperature. The temperature sensor device 35 is connected to a control and calculation unit 38 having a memory medium 37, similar to the force measuring device 34. In the memory medium 37, the different lengths of the auxiliary rails stored in the rail storage device 13 as well as the respective identifying features are stored. A distance measuring device 40 is provided for measuring a gap 39 defined by the distance between the two rail ends 24.

Next, a method for removing the defective rail portion 42 and preparing for welding will be described with reference to FIGS. 3 (a) to 3 (m). In this case, the laying location 43 on the track 7 defined by the stationary rail portion 42 to be removed as shown in FIGS. 3 (a) to 3 (m) is shown by a one-dot chain line. The machine device 1 travels in the direction indicated by the arrow 44 and stops in front of the laying point 43 (FIG. 3a). After placing the third machine 5 on the track 7 (FIG. 3b), until the machine 5 reaches the end position shown in FIG. 3 (c), the anti-creeper ( located to the left of the laying point 43 in the drawing) Is released by the device 28.

In parallel with this, the second machine 4 is moved towards the laying point 43, in which case the anti-creeper is released by a corresponding device 28 (located to the right of the laying point 43 in the drawing plane). (FIG. 3d). The length of the rail segment at which the anti-creeper is released is detected by the distance measuring wheel and transmitted wirelessly to the control and calculation unit 38. In the region of this rail section, the dog nail is also removed or loosened. The tie plate is released from the rail bottom of the rail slightly lifted from the sleeper by the lowered roller 29.

  The first machine 2 is made to travel toward the laying point 43 and marks (rules) the portion of the rail 25 where the first separation / cutting is to be performed (FIG. 3e).

According to FIG. 3 f , the rail cutting saw 17 is subsequently positioned on the marked part, and the first separation cutting is performed, and a clearance 39 (see FIG. 2) is formed by the first separation cutting. two rail ends 2 4 are at a distance from each other is formed. A rotatable wire brush 45 adjustably supported on the machine frame 8 is pressed against the rail abdomen of the two rail ends 24 in order to optimize the contact points provided for the welding device. The rail traveling mechanism 6 positioned at the end of the first machine 2 is slightly raised from the track 7 by lowering the associated lifting column 22.

Rail feedback unit 20 is placed on two rails ends 2 4 (Fig. 3g or 2), whereby, the two rail ends 2 4, until Joint Gap 39 is removed, the load by two drives 33 And are attracted to each other. The tensile force f required for this is registered and recorded by the force measuring device 34. Occurs when the still rail be removed Inukugi is clamped, in order to avoid with certainty the measurement error of the tensile force, to rail segment is in a state of being released tension, the two rail ends drawn repeatedly It is done. In parallel with this, the temperature measuring device 35 measures the actual rail temperature, and the distance measuring device 40 measures the length l of the play. In the meantime, the second and third machines 4, 5 are driven to the next defective rail part in order to release the necessary length of sleeper anchor.

Automatically based on the measured values transmitted to the control and calculation unit 38 and the length of the stored auxiliary rail 14 stored in the memory medium 37 for optimum welding, A suitable auxiliary rail 14 is calculated. The rail cutting saw 17 is fed forward until the length for the rail portion 42 to be removed, as calculated by the control and calculation unit 38, is obtained while measuring its sliding distance. This length is calculated taking into account the length of the selected auxiliary rail 14 as well as the difference between the actual rail temperature and the stored average temperature. In the required length of the auxiliary rail 14, in consideration of the burn-out generated by the two spark butt welding and the shortening of the rail after crushing, the welding of the auxiliary rail 14 is finally performed despite such shortening. Thus, it is necessary to obtain a desired target rail stress. A second separation cut is performed at an interval calculated from the selected length of the auxiliary rail 14 and spaced from the first separation cut to measure the distance accordingly. After the second separation cut by the rail cutting saw 17 (FIG. 3h) and after removing the dog nail, the separated defective rail portion 42 is removed. Of course, even when the appropriate auxiliary rail 4 does not exist, a part of the long auxiliary rail 14 can be separated to an appropriate length.

  The auxiliary rail 14 selected by the control and calculation unit 38 is placed on the track 7 by the crane jib 12, and at this time, one end portion is positioned in accordance with the rail end portion 24 (FIGS. 3i and 3j). The second end of the auxiliary rail 14 is arranged in relation to the second rail end 24 and possibly in an overlapping manner (in relation to the difference between the actual temperature and the neutral temperature). In order to ensure the position of the auxiliary rail 14 positioned on the track 7, a corresponding dog nail is driven into the sleeper (FIG. 3k).

  As shown in FIG. 3 (l), the first machine 2 travels forward to the extent that the rail end 24 can be processed by the polishing device 27 after the lifted rail travel mechanism 6 is lowered. It is done. Next (FIG. 3m), the machine 2 is further traveled to the next laying point 43, where the work phase is repeated.

  The two welds for the auxiliary rail 14 are performed in a spark butt welding process by a welding machine not shown in detail below, in which case the associated measurement data is transmitted by the control and calculation unit 38 using radio or floppy disks. To the control unit or welding machine.

1 is a schematic side view of a mechanical device for preparing rail welding. FIG. It is a top view of the rail drawing apparatus for drawing up two rail edge parts. 3 (a), 3 (b), 3 (c), 3 (d), 3 (e), 3 (f), 3 (g), 3 (h), 3 (I), FIG.3 (j), FIG.3 (k), FIG.3 (l), FIG.3 (m) is a schematic side view of the machinery apparatus in a various driving | running | working division.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Mechanical apparatus, 2 1st machine, 3 Linker, 4 2nd machine, 5 3rd machine, 6 Rail traveling mechanism, 7 Track, 8 Machine frame, 9 Traveling drive apparatus, 10 Driver's cab, 11 Drive apparatus , 12 crane jib, 13 rail storage device, 14 auxiliary rail, 15 machine longitudinal direction, 16 saw guide, 17 rail cutting saw, 18, 19 drive device, 20 rail attracting device, 21 one pair of lifting columns, 22 lifting column, 23 Drive device, 24 rail end, 25 rail, 26 device, 27 polishing device, 28 height adjustable device, 29 roller, 30 roller, 31 rail catch pair, 32 rail catch, 33 drive device, 34 force measuring device , 35 temperature measuring device, 36 lines, 37 memory media, 38 Control and calculation unit, 39 idle (rail joint), 40, 41 distance measuring device, 42 rail part, 43 laying location, 44 arrow, 45 wire brush

Claims (6)

The first separation cut forms one gap (39) and two rail ends (24), and after the second separation cut, one auxiliary rail (14) is welded to the two rail ends (24). to the trajectory (7), having an actual rail stress and the actual rail temperature, the welded rails (25), Oite to how to remove the rail portion (42) defective,
B) After the first separation and cutting, the two rail end portions (24) are gripped by the rail pulling device (20) that couples the rail end portions (24) to each other, and are pulled toward each other while applying a tensile force. Remove (39)
B) At this time, the auxiliary rail (14) necessary for forming the target stress after welding both ends of the auxiliary rail (14) to the two rail end portions (24) after the second separation and cutting. Record the tensile force f required to pull the two rail ends (24) and the actual rail temperature in order to be calculated and selected by the control and calculation unit (38) ,
C) The second separation cut is performed at an interval calculated from the selected length of the auxiliary rail (14), keeping the interval from the first separation cut and measuring the distance accordingly. A method for removing a defective rail portion of a track characterized by:   The method according to claim 1, characterized in that after the first separation cut, the clearance (39) formed by the distance between the two rail ends (24) is measured. In a machine with a machine frame (8) capable of running on a track (7) by a rail running mechanism (6) for preparing rail welding,
A) A rail storage device (13) for storing a plurality of auxiliary rails (14) is provided,
B) The drive device (11) is provided with a crane jib (12) capable of adjusting the height and rotating for grasping and lowering the auxiliary rail (14),
C) a height-adjustable rail cutting saw (17) is provided, which is adjustably mounted on a saw guide (16) extending in the machine longitudinal direction;
D) On the machine frame (8) with two pairs (31) of rail catches (32) spaced apart from each other, formed to grip and pull the two rail ends (24) A rail pulling device (20) supported by the drive device (19) so as to be adjustable in height is provided,
E) A pair of elevating struts (22) disposed in the immediate vicinity of the rail travel mechanism (6) and fixed to the machine frame (8) are provided, and the pair of elevating struts (22) Can be lowered and installed on the track (7), and the adjacent rail traveling mechanism (6) can be lifted from the track (7).
A machine provided with a machine frame that can run on a rail running mechanism. The machine according to claim 3, wherein the rail pulling device (20) comprises a force measuring device (34) for recording the tensile force f required to pull the two rail ends (24).   4. A machine according to claim 3, wherein a temperature measuring device (35) is provided for recording the actual rail temperature. The rail cutting saw (17) is connected to a distance measuring device (41) for automatically detecting the sliding distance of the rail cutting saw (17) along the saw guide (16). Item 3. The machine according to Item 3.

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