JP2005307557A - Apparatus for compacting track by vibration, and track compacting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a track compacting apparatus which can perform compaction only by vibrations, the weight of which can be wholly reduced and which can compact the ballast of the whole of one sleeper at a time, and a track compacting method. <P>SOLUTION: This track compacting apparatus, which is mounted on a working machine traveling on the track, compacts the ballast of the track. The track compacting apparatus is equipped with a vibration generating part 8 which is installed in a base plate 3, a connection part 9 for being mounted on the working machine, and a plurality of pawls 6 which are arranged in such a manner as to be suspended from the base plate 3. The track compacting apparatus vibrates the pawls 6 via the base plate 3 by the vibrations of the vibration generating part 8, and vibrates the ballast by inserting the pawls 6 into the ballast, and compacts the ballast by the vibrations. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a track tamping device, and in particular, because it can be rammed only by vibrations, the entire device can be reduced in weight, and the track bed ballast of one whole sleeper can be rammed at a time, and is difficult to sink. The present invention relates to a track tamping apparatus and a track tamping method capable of forming a strong road bed ballast.

  In general, a railroad track is configured by laying a roadbed ballast made of crushed stone on a roadbed and fastening a rail via sleepers thereon. If the train repeatedly travels on this track, the track ballast sinks due to the vibration and weight, and the sleepers also sink, resulting in a track error. This trajectory error not only affects noise and the ride comfort of the train, but also has a risk of derailment. Therefore, it is necessary to repair the road bed ballast under the sleepers, to stabilize it, and to return the trajectory to its normal position and height. A track tamping device is used for repairing and tamping the roadbed ballast. The “track” generally refers to a rail and a road on which a rail is laid. In this case, the term “track” is used in the latter sense and refers to a road on which a rail including not only a rail but also sleepers and a roadbed ballast is laid. Say.

FIG. 5 is an explanatory view for explaining a working machine equipped with a conventional track tamping device. In general, a working machine 50 is used in which a hydraulic excavator is modified to be able to travel on rails. The tamping device 30 is attached as a replaceable attachment to the tip of the arm 54 of the work machine, and the work machine is driven to perform the tamping work while traveling on the track.
The conventional track tamping device 30 opens and closes one or two pairs of claws 32 with a hydraulic cylinder 34 and pushes the roadbed ballast (crushed stone) 20 under the sleepers so as to be sandwiched between the left and right claws 32. The configuration is such that the roadbed ballast 20 is squeezed by this pressure. The conventional track tamping device 30 also includes a vibration device (not shown) that vibrates the claw 32 so that the claw 32 can be easily inserted into the roadbed ballast 20. This vibration device generates vibration by rotating a flywheel having a weight eccentrically provided on a rotating shaft of a hydraulic motor.
JP 2000-1803 A (all pages) JP 2003-96702 A (all pages)

However, as described above, the roadbed ballast 20 under the sleepers 14 is sunk and consolidated due to the vibration and weight of the passing train. Nevertheless, from this state, in the conventional track tamping device 30, as the roadbed ballast 20 is gathered and pushed under the sleepers 14 as described above, the pressed roadbed ballast 20 is loosened, Since the new ballast is inserted under the sleepers 14, the sleepers 14 are lifted. Therefore, there has been a problem that the sleeper 14 that has been lifted must be repaired, and the work efficiency does not increase.
Further, the conventional tamping device 30 is mainly operated by grasping the road bed ballast 20 as described above, and is operated while vibrating the claws 32 in order to facilitate the movement of the claws 32 in the road bed ballast 20. . Such a configuration has the following problems. That is, there is a problem that the vibration cannot be efficiently transmitted to the claw 32 because the vibration generated by the vibration exciting device is absorbed by the fulcrum portion of the link mechanism of the hydraulic cylinder 34 for performing the operation of grasping. This is because the link mechanism is configured so as to be able to rotate, and vibrations are not transmitted particularly in the rotation direction. In addition, the vibration is absorbed by the gap of the link part, and the gap becomes large due to the vibration.
Furthermore, since the conventional track tamping device 30 includes the hydraulic cylinder 34,
When the number of the claws 32 is increased, the weight of the entire device increases, and it is difficult to provide the track tamping device 30 with four pairs of claws because of the balance of the work machine 50. This is because the track tamping device 30 is attached to the tip of the arm 54 of the work implement 50, and therefore the posture of the work implement 50 becomes unstable if the weight of the tip is large. Therefore, the roadbed ballast 20 relating to the entire single sleeper 14 could not be hardened at a time. For this reason, two pairs of claws 32 must be used, and the roadbed ballast 20 on one rail side must first be rammed with the two pairs of claws 32, and then the tamping device 30 must be set up again on the other rail side and rammed again. The workability was very poor.

  Therefore, the present invention was devised to solve such problems, and the roadbed ballast 20 can be hardened only by vibration, so that the entire apparatus can be reduced in weight, and one sleeper can be entirely It is an object of the present invention to provide a track tamping apparatus and a track tamping method that can form a strong pedestal ballast 20 that can be squeezed, and that is difficult to sink.

  The invention described in claim 1 is a track tamping device that is attached to a work machine that travels on a track, drives the work machine, and rams a roadbed ballast made of crushed stone to which sleepers of the track are fixed. And an exciter 8 installed on the base plate 3 for generating vibrations, and a connecting part disposed above the base plate 3 and fixed to the base plate 3 for attaching the track tamping device 1 to the working machine. 9 and a plurality of claws 6 fixed below the base plate 3 and arranged so as to hang down from the base plate 3, and the claws 6 are vibrated via the base plate 3 by the vibration of the vibration generator 8. Then, by inserting the vibrating claw 6 into the roadbed ballast, the roadbed ballast is vibrated, and the roadbed ballast is solidified by the vibration.

  According to the second aspect of the present invention, four or five pairs of claws 6 that are fixedly arranged so as to hang down below the base plate 3 are provided on both sides of the long side of the rectangular shape of the base plate 3. Features.

  The invention described in claim 3 is a track tamping method for driving a working machine that travels on a track to ram a roadbed ballast made of crushed stone to which the sleepers of the track are fixed. A first step of inserting vibrations into the roadbed ballast by the working machine while generating vibrations and vibrating a plurality of claws 6 disposed below the base plate 3 by the generated vibration unit 8; A second step of vibrating the claw 6 without rotating the vibrating claw 6 to vibrate the road bed ballast.

  According to the first aspect of the present invention, since the roadbed ballast 20 can be tamped only by vibration, the entire apparatus can be reduced in weight, and the pedestal ballast 20 of one whole sleeper can be rammed at a time. At the same time, it is possible to provide a track tamping device capable of forming a strong roadbed ballast 20 that is difficult to sink.

  According to the invention described in claim 2, since the roadbed ballast 20 can be tamped only by vibration, the entire apparatus can be reduced in weight and the roadbed ballast 20 of one sleeper can be rammed at a time. At the same time, it is possible to provide a track tamping device capable of forming a strong roadbed ballast 20 that is difficult to sink.

  According to the third aspect of the present invention, since the roadbed ballast 20 can be tamped only by vibration, the entire apparatus can be reduced in weight, and the roadbed ballast 20 of one sleeper can be rammed at a time. At the same time, it is possible to provide a track tamping method capable of forming a strong roadbed ballast 20 that is difficult to sink.

  The best mode for carrying out the present invention will be described below with reference to the drawings. First, the configuration of the track tamping device 1 according to the present invention will be described. FIG. 1 is a partially broken perspective view for explaining the track tamping device 1. The track tamping device 1 includes a base plate 3, a hydraulic motor 8 serving as a vibration generating unit, and a vibration isolating rubber 10 for preventing vibration generated by the vibration generating unit from being transmitted to the arm 54 side of the work implement, and a tamping device. 1 includes a connecting portion 9 for connecting 1 to the arm 54 of the work implement, and a claw 6 that vibrates the roadbed ballast 20 to perform tamping.

  In the present embodiment, the base plate 3 has a horizontally long rectangular shape and is configured with the base 3a as a base. The base 3a is bent slightly in the vicinity of the outer edge portion in the longitudinal direction (see 3b) to reinforce the longitudinal deflection. Further, a reinforcing rib 3c is disposed on the upper surface of the base 3a by welding or the like, and a hole 3d for reducing the weight is formed in the rib. This is to ensure both rigidity of the base plate 3 and weight reduction. In addition, although the board | substrate 3a employ | adopted the flat plate structure, what was comprised by what is called a frame structure, specifically, a pipe or an angle. The present invention can be implemented as long as the base 3a has a structure that does not break while flexibly and efficiently transmitting vibration generated in the vibration generating unit 8 to the claws 6.

  On the upper surface of the base plate 3, a vibration generating portion 8 is fixed near the center of the base 3a via a base 3e for reinforcement of the base 3a. In the present embodiment, as an example, the vibration generating unit 8 employs a hydraulic motor. The hydraulic motor 8 serving as a vibration generating unit includes a supply hose 8a and a discharge hose 8b. The hydraulic motor 8 is firmly attached so that it does not come off the base 3a even if it vibrates. This is because the vibration generated by the hydraulic motor 8 is reliably transmitted to the base plate 3. The rotating shaft of the hydraulic motor 8 is provided with a flywheel (not shown). Since the flywheel is formed with the weight eccentric with respect to the rotational axis, the flywheel generates vibration. As a result of the experiment, the vibration generated by the hydraulic motor 8 is suitably 950 to 5050 rpm (represented by the number of revolutions in this embodiment) and 9.8 to 32.4 kN as the excitation force. This is because if the frequency is too low, the work efficiency is poor, and if it is too high, the vibration is hardly transmitted to the ballast, and the life of the apparatus is adversely affected. The vibration force is also the same as the frequency. The vibration generated by the hydraulic motor 8 is transmitted to the entire base plate 3 through the pedestal 3 e and transmitted from the claw holder 5 to the claw 6. As a result, the claw 6 vibrates in the horizontal and vertical directions. The hydraulic motor 8 can be attached in a direction perpendicular to the base 3a.

  Above the base plate 3, a connecting portion 9 for connecting to the arm 54 of the working machine is provided. It is desirable that the connecting portion 9 is coupled to the base plate 3 via a vibration isolating rubber 10, for example. This is to prevent the vibration generated in the vibration generator 8 from being transmitted to the arm side of the work implement. For example, the track tamping device 1 is connected to the arm 54 and the link portion 56 of the work machine by inserting connection pins (not shown) into two pairs of connection pin insertion holes 9a and 9b formed in the connection portion 9. The Note that the base plate 3 and the connecting portion 9 may have an integrated structure.

FIG. 2 is a broken sectional view taken along line AA shown in FIG. 1 according to the track tamping apparatus 1, and FIG. 3A is a sectional view taken along line BB shown in FIG. b) is a cross-sectional view of the rail 12 and the sleepers 14 shown in FIG. With reference to FIG. 2, the structure of the nail | claw 6 of the track | orbit ramming apparatus 1 which concerns on this embodiment is demonstrated. In this embodiment, as an example, five pairs of claws 6 are arranged. This is to quickly and surely solidify the roadbed ballast relating to the entire sleeper at once.
Counting from the left in FIG. 2, the claws 6 are arranged so that the rails are sandwiched between the first and second claws, and the fourth and fifth claws (also FIG. 3). reference). As an example, the claw 6 is bolted to a claw holder 5 welded to the base 3a. Therefore, the claw 6 is fixed integrally with the base plate 3 and vibrates together with the base plate 3. However, the claw 6 is significantly different from the conventional trajectory tamping device 30 in that the claw 6 is not configured to perform a rotational motion such as opening and closing.
In addition, the nail | claw 6 is attached so that it can replace | exchange easily, since it contacts with the roadbed ballast 20 vibrating, and is easy to be damaged. In addition, the claw 6 adopts a flat plate shape in this embodiment, but even if it is a pointed pin as long as it can be easily inserted into the roadbed ballast 20 and can transmit vibration to the roadbed ballast 20. It may be an angle or the like.

  In the present embodiment, there are five pairs of nails 6. In this configuration, the center of the sleeper 14 can be tamped at once. Conventionally, the rails and sleepers have been squeezed with emphasis on the intersections of rails and sleepers because the rails are set up for each rail with two pairs of left and right claws. This is because, as described above, the number of the claws 32 is limited due to the weight as described above. However, in the present invention, even if the number of the claws 6 is increased, the weight does not increase so much, so that the number of the claws 6 that can firmly slam the roadbed ballast 20 related to the entire single sleeper 14 can be provided. For this reason, in the invention which concerns on Claim 3, it is supposed that 4 pairs or 5 pairs of claws 6 are provided as the best form. However, in the invention according to claim 1, the principle of the present invention can be achieved if a plurality of claws 6 are provided. Therefore, in the invention according to claim 1, the claws 6 may be one pair, two pairs, or the other. As for the number and arrangement of the claws 6, an appropriate quantity can be arranged at an appropriate position in accordance with the shape and dimensions of the sleepers 14.

Next, the operation of the track tamping device 1 will be described.
4A is a side view taken along the arrow Y shown in FIG. 1, and FIG. 4B is a cross-sectional view of the rail 12. While explaining the actual tamping work, the operation of the track tamping apparatus 1 will be explained. The track tamping device 1 is attached to the arm 54 of the working machine. The work machine travels on the track and moves to the sinking sleeper 14 portion that needs to be tamped. First, a new ballast (crushed stone) is replenished in advance on the roadbed ballast 20 that needs to be tamped.
Next, the hydraulic motor 8 of the trajectory tamping device 1 is activated to generate vibration, and by this vibration, the arm 54 of the work implement is operated in a state where the claw 6 is oscillating, so that the claw 6 becomes the roadbed ballast 20. insert. This is because when the claw 6 is vibrated, less force is required for insertion than when the claw 6 is not vibrated. As will be described later, the vibrating ballast 20 is vibrated by inserting the vibrating claws 6, so that the replenished ballast (crushed stone) enters between the roadbed ballasts 20, and this vibration alone causes a strong and high density. A tamped state can be formed. Therefore, the sunk sleeper 14 can be restored to the original normal height and position.

Here, the principle of the track tamping of the track tamping device 1 when the vibrating claw 6 is inserted into the roadbed ballast 20 will be described.
Generally, since the roadbed ballast 20 has various shapes and sizes, when the roadbed ballast 20 is laid, the individual ballasts (crushed stones) adjacent to each other are pressed in a state of being caught with each other and held in that state. Has been. Therefore, a gap between adjacent ballasts is large, and a state of low density as a whole is formed.
However, if each of the ballasts vibrates by inserting the claws 6 that vibrate by the track tamping device 1 into the ballast ballast 20 almost vertically, the ballasts 20 below the sleepers 14 are vibrated. Each ballast is easy to move and moves to a more stable location. Specifically, it tries to move downward by the action of gravity. As a result, the gap between the ballasts is reduced, and the roadbed ballast 20 having a high density and being stably tamped can be formed. Therefore, by realizing such a principle, the roadbed ballast 20 can be solidified as if the applied pressure was applied only by applying vibration to the roadbed ballast 20.

As described above, the track tamping device 1 performs the tamping operation using only vibration, and does not need to have a function of pinching with a hydraulic cylinder or the like, so that the entire device can be reduced in weight. In addition, since only the vibration is used, the number of the claws 6 can be any number, so that the setting can be made with a high degree of freedom without being affected by the size of the sleepers 14 or the position to be squeezed. The road bed ballast 20 of the entire sleeper 14 can be solidified. In addition, since the roadbed ballast 20 is solidified only by vibration, the pawl 6 can be attached without using a link mechanism, and vibration can be transmitted efficiently and a strong roadbed ballast 20 that is difficult to sink can be formed.
Even when the train passes, it is considered that the same phenomenon as described above occurs due to the vibration. Therefore, by performing the tamping by vibration in the tamping work in advance, the sleepers 14 can be prevented from sinking due to the vibration of the train. Therefore, it is possible to form a strong roadbed ballast 20 that is difficult to sink.

Furthermore, in order to understand the effect | action of this track | truck tamping apparatus 1, the difference with the conventional track | truck tamping apparatus 30 is mentioned. It is considered that the conventional track tamping device 30 is based on the technical idea of being pinched by the claws 32 and tamped by the applied pressure. The conventional orbital tamping device 30 also vibrates the claws 32, but it is considered to be mainly for facilitating the insertion of the claws 32 and the operation of pinching in the ballast. As described above, since the link mechanism is provided, the vibration is absorbed. Therefore, the vibration is not intended for tamping, but is a means for facilitating the operation of pinching with the claws 32. Because you should think.
Further, it is considered that the applied pressure when sandwiched between the claws 32 is expected to be further increased by the vibration. This is because even if the vibration is caused to be sandwiched between the claws 32, the claws 32 are not inserted in the vertical direction as in the trajectory tamping device 1, so that the individual ballasts are prevented from moving downward due to gravity. This is because the mechanism of moving the ballast downward by applying vibration to the ballast as in the track ramming apparatus 1 and tamping the roadbed ballast 20 is not realized.

It is a perspective view for demonstrating the track | orbit tamping apparatus of this invention. It is a partially broken sectional view of the AA line shown in FIG. 1 which concerns on the track | orbit tamping apparatus of this invention. (A) is sectional drawing of the BB line shown in FIG. 2 which concerns on the track | orbit tamping apparatus of this invention, (b) is sectional drawing of the rail and sleeper shown to (a). (A) is the side view of the Y direction arrow shown in FIG. 1 which concerns on this track | orbit tamping apparatus of this invention, (b) is sectional drawing of the rail shown to (a). It is a figure for demonstrating the working machine equipped with the conventional track | truck tamping apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Track tamping device 3 Base plate 3a Base 3b Bending part 3c Rib 3d Rib hole 3e Base 5 Claw holder 6 Claw 8 Excitation part (hydraulic motor)
8a Supply hose 8b Discharge hose 9 Connection 9a, 9b Connection pin insertion hole 10 Anti-vibration rubber 12 Rail 14 Sleeper 20 Roadbed ballast

Claims (3)

A track tamping device that is attached to a work machine that travels on a track, drives the work machine, and rams a roadbed ballast made of crushed stone to which the sleepers of the track are fixed,
A vibration generator (8) for generating vibrations installed on the base plate (3);
A connecting portion (9) disposed above the base plate (3) and fixed to the base plate (3) for attaching the track tamping device (1) to the working machine;
A plurality of claws (6) fixedly arranged without using a link mechanism so as to hang down below the base plate (3),
The pawl ballast is vibrated by inserting the vibrating pawl (6) into the roadbed ballast by vibrating the pawl (6) through the base plate (3) by the vibration of the vibration generator (8), A trajectory tamping device (1) characterized in that the roadbed ballast is tamped by the vibration.   The claw (6) fixedly arranged so as to hang down below the base plate (3) is provided in four or five pairs on both sides of the rectangular long side of the base plate (3). Item 1. The track tamping device according to Item 1. A trajectory tamping method for driving a working machine that travels on a trajectory and tamping a roadbed ballast made of crushed stone to which sleepers of the trajectory are fixed,
While the vibration is generated by the vibrating portion (8) installed on the base plate (3), the plurality of claws (6) disposed below the base plate (3) are vibrated, and the work implement is used. A first step of inserting into the road bed ballast;
A second step of vibrating the claw (6) without rotating the vibrating claw (6) to vibrate the road bed ballast;
A trajectory tamping method characterized by comprising:

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