JP2020105731A - Beater for tie tamper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beater for a tamping machine which can be easily crushed even if it is a solidified roadbed which is deteriorated and powdered due to the influence of train running, rainwater, climate and the like. A beater 10 includes a tapered portion 11, a portion having the same width, and a sharpened portion 13 from a base end 10b of a strip-shaped flat plate member in the longitudinal direction toward a tip end 10a. The tapered portion 11 has a shape in which the width is continuously widened from the proximal end 10b toward the distal end 10a from half the length from the proximal end 10b to the distal end 10a to a position closer to the distal end, and the same width portion 12 is the most of the tapered portion 11. The overall width W has a constant shape from the large portion 11a toward the tip 10a, and the pointed portion 13 has a shape in which the width is continuously reduced from the position 11b near the tip 10a of the same width portion 11 toward the tip 10. The same width portion 12 has a curved portion 12a having a V-shaped side view, and a curved portion 13a having a longitudinal direction L as a valley longitudinal direction in a region closer to the tip 10a from the curved portion 12a. [Selection diagram] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a beater attached to the tip of a tie tamper (ballast compaction device) used for maintenance work of a railroad track or for filling ballast in a steel sleeper.

As a conventional tie tamper beater used for the maintenance work of the railroad track, for example, there is one as shown in FIG. This tie tamper beater 70 has a taper shape from a base end 71 in the longitudinal direction toward a tip 72, and a bent portion 73 having a V shape in a side view at a portion closer to the tip 72 than the center in the longitudinal direction. The front end 72 is provided with a concave edge portion 74 having an arcuate shape which is recessed toward the base end 71.

In addition, as a beater for a tie tamper, those having various shapes and structures have been proposed in the related art, but as those related to the present invention, for example, a “beater for a tie tamper” described in Patent Document 1 or There is "a solidifying tool for a tie tamper" described in Patent Document 2 and the like.

The "tie tamper beater" described in Patent Document 1 has an enlarged portion formed on both sides at the second bolt hole of the beater so that the beater width is increased. It is characterized in that it is formed to have a slightly narrower width and is formed so as to expand in a tapered shape from the narrowed portion to a predetermined position and return to the beater width.

The "tightening tool for tie tamper" described in Patent Document 2 has a comb-shaped tip portion that is inserted into the ballast, and the entire width of the leading edge at the tip portion is 3 times or more the maximum ballast particle size. The maximum width of the tooth gap is about half of the maximum ballast particle size, and the bending angle of the tip part with respect to the base part attached to the tie tamper is greater than or equal to the road bed thickness and the half length of the sleeper bottom width. It is characterized by being.

JP, 2005-307561, A JP, 2015-59329, A

Railroad beds are often deteriorated due to the weight load of running trains, rainwater, climate, etc., and become solidified due to powder sludge, so it is necessary to perform regular maintenance work using tie tampers. In the conventional tie tamper beater 70 shown in FIG. 7, it is not easy to stiffen the solidified bed.

On the other hand, the "beater for tie tamper" described in Patent Document 1 and the "consolidating tool for tie tamper" described in Patent Document 2 each have a unique shape, but they are consolidated as described above. It is not easy to compact the roadbed in a state.

Therefore, the problem to be solved by the present invention is to provide a beater for a tie tamper that can be easily hardened even if it is a hardened roadbed, which is deteriorated due to the influence of train running, rainwater, climate, etc. To do.

The beater for tie tamper of the present invention includes a taper portion, a width portion and a sharp portion from the base end to the tip in the longitudinal direction of the strip-shaped flat plate material,
The tapered portion has a shape that widens from the base end toward the tip, to a position at least half the length from the base end to the tip,
The same width portion forms a shape with a constant overall width from the maximum width portion of the tapered portion toward the tip,
The pointed portion has a shape in which the width is reduced from the position near the tip of the same width portion toward the tip,
The same width portion has an inflection portion having a dogleg shape in a side view,
It is characterized in that a curved portion having the longitudinal direction as a valley longitudinal direction is provided in a region closer to the tip end than the inflection portion.

In the tie tamper beater, a cutout portion having a shape recessed toward the base end side can be provided at the tip of the pointed portion.

In the beater for tie tamper, both side edge portions of the pointed portion can be formed in a curved shape that is convex in the width increasing direction.

In the tie tamper beater, an angle formed by the same width portion on the base end side and the same width portion on the tip end side that face each other with the inflection portion interposed therebetween can be set to 150 degrees to 163 degrees. ..

INDUSTRIAL APPLICABILITY The present invention can provide a beater for a tie tamper that can be easily stiffened even if it is a roadbed that is deteriorated, powdered and sludged due to the influence of train running, rainwater, climate, etc.

It is a front view showing a beater for tie tampers which is an embodiment of the present invention. It is a side view of the beater for tie tampers seen from the arrow A direction in FIG. FIG. 2 is an end view of the beater for tie tamper cut along the line BB in FIG. 1. It is a figure which shows the state which attached the beater for tie tampers shown in FIG. 1 to the tie tamper. It is explanatory drawing which shows the verification method of the stiffening performance of the beater for tie tampers shown in FIG. It is a front view which shows the beater for tie tampers which is other embodiment of this invention. (A) is a side view showing a conventional tie tamper beater, and (b) is a front view of the tie tamper beater.

Hereinafter, based on FIGS. 1 to 6, the tamper beaters 10 and 20 according to the embodiment of the present invention will be described. In the following description, "beater for tamper" may be abbreviated as "beater".

First, the tamper beater 10 will be described with reference to FIGS. 1 to 5. As shown in FIGS. 1 to 3, the beater 10 includes a taper portion 11, an equal width portion 12, and a sharp portion 13 from a base end 10b of the strip-shaped flat plate member in the longitudinal direction L toward a tip 10a.

The taper portion 11 has a shape in which the taper portion 11 is continuously widened from the base end 10b to the tip 10a to a position closer to the tip than the half position of the length from the base end 10b to the tip 10a. The width portion 12 has a shape in which the entire width W is constant from the maximum width portion 11a of the taper portion 11 toward the tip 10a. The pointed portion 13 has a shape in which the width is continuously reduced from the position 11b near the tip 10a of the same width portion 12 toward the tip 10a.

As shown in FIG. 2, the same width portion 12 has an inflection portion 12a having a dogleg shape in a side view. In the beater 10, the angle R formed by the same width portion 12 on the base end 10b side and the same width portion 12 on the tip end 10a side that face each other with the inflection portion 12a sandwiched is set to 150 degrees, but this is not a limitation. Since it is not performed, it can be arbitrarily set within the range of 150 degrees to 163 degrees.

As shown in FIGS. 1 to 3, a curved portion 13a having a longitudinal direction L as a valley longitudinal direction is provided in a region near the tip 10a from the inflection portion 12a. A notch 14 having a V-shaped recess toward the base end 10b is provided at the tip 10a of the pointed portion 13.

As shown in FIG. 1, both side edge portions 13b and 13b of the sharpened portion 13 each have a curved shape (arcuate shape) that is convex in the widening direction. A plurality of bolt holes 15, 15 are opened in the taper portion 11.

As shown in FIG. 4, the usage of the beater 10 is the same as the conventional one, and the bolts 16 and 16 of the tie tamper T are inserted into the plurality of bolt holes 15 and 15 (see FIG. 1) formed in the tapered portion 11. As described above, the nuts 17 and 17 are screwed onto the bolts 16 and 16 so as to be detachably fixed.

Here, based on FIGS. 4 and 5, a verification method and verification results of the beat-hardening performance of the beater 10 will be described. As shown in FIG. 4, the tie tamper T to which the beater 10 is attached is held in an upright posture in which the tip 10a of the beater 10 is grounded on the surface of the road bed G on which ballast (natural crushed stone) is laid. At this time, the taper portion 11 of the beater 10 is parallel to the vertical direction. Further, a marking M is attached at a position 150 mm away from the tip end 10a of the beater 10 toward the base end 10b.

Then, the tie tamper T is operated in a state where the standing posture shown in FIGS. 4 and 5 is maintained, and the tip 10a side of the beater 10 is brought to the position of the marking M on the track bed G by the weight of the tie tamper T (including the beater 10). When the time required for embedding was measured, a result of 5 seconds was obtained.

On the other hand, when the conventional beater 70 shown in FIG. 7 was verified by a method similar to the above-described verification method, it took 25 hours to be embedded in the roadbed from the distal end 72 to the position of 150 mm on the proximal end 71 side. The result of seconds was obtained.

Comparing the verification results, it took 25 seconds for the conventional beater 70 to be buried from the tip 72 to a position of 150 mm from the tip 72, whereas in the case of the beater 10, it was buried from the tip 10a to a position of 150 mm in 5 seconds. Therefore, it can be seen that the beater 10 is significantly superior to the beater 70 in that it is hardened and compacted.

Further, since the beater 10 has the notch 14 at the tip 10a, the ballast (crushed stone) has an excellent performance, and the curved portion 13a causes the wrapped ballast (crushed stone) to spill from the side edge portion 13b. It was also found that this can be prevented. Further, the notch portion 14 not only has a function of grasping the ballast but also a function of preventing the beater 10 from being flipped off during the compacting work, so that the vibration is concentratedly transmitted to the intended place and tightened. Can be hardened.

Therefore, the beater 10 can be easily hardened even if the roadbed is deteriorated and powdered due to the influence of train running, rainwater, weather, etc. and solidified, and the ballast is inserted inside the steel sleeper. The work to do can also be performed easily and efficiently.

Next, based on FIG. 6, a beater 20 for a tie tamper, which is another embodiment of the present invention, will be described. In addition, about the part which comprises the beater 20 mentioned above in the part which comprises the beater 20 shown in FIG. 6, the same code|symbol as the code|symbol shown in FIGS. 1-3 is attached|subjected, and description is abbreviate|omitted.

As shown in FIG. 6, the outline shape from the base end 20b of the beater 20 to the pointed portion 13 is similar to that of the beater 10 shown in FIG. 1, but the notch portion 14 of the beater 10 is provided at the tip 20a of the beater 20. Is not present, and the tip 20a has a sharp shape.

When the beater 20 shown in FIG. 6 was tested for its compacting performance based on the verification method shown in FIGS. 4 and 5, the time required to bury the beater 20 from the distal end 20a to a position closer to the base end 20b side by 150 mm was required Results of 4-5 seconds were obtained. Specifically, in the beater 20, the time was 4 seconds when the angle corresponding to the angle R shown in FIG. 2 was set to 150 degrees, and the time was 5 seconds when the angle was set to 163 degrees.

Looking at the verification result by the verification method described above, since the beater 20 does not have the notch portion 14 (see FIG. 1), the beater 70 has a slightly lower function of gripping the ballast, but the beater 70 has By comparison, it can be seen that the beater 20 has a significantly better compacting performance.

Therefore, the beater 20 can be easily hardened even if it is a hardened roadbed, which is deteriorated and powdered by the influence of train running, rainwater, climate, etc., and the ballast is inserted inside the steel sleeper. The work to do can also be performed relatively easily and efficiently.

The tie tamper beaters 10 and 20 described with reference to FIGS. 1 to 6 are examples of the tie tamper beater according to the present invention, and the tie tamper beater according to the present invention is the above-described tie tamper beater. It is not limited to the beaters 10 and 20.

INDUSTRIAL APPLICABILITY The beater for tie tamper according to the present invention can be widely used in the field of civil engineering construction work such as maintenance work of a railway roadbed and filling work of a ballast in a steel sleeper.

10, 20 Tie tamper beater 10a, 20a Tip 10b, 20b Base end 11 Tapered part 11a Maximum width part 11b Position near the tip 12 Same width part 12a Inflection part 13 Pointed part 13a Curved part 13b Side edge part 14 Notch part 15 bolt holes 16 bolts 17 nuts G road bed L longitudinal direction M marking R angle T tie tamper W full width

Claims (4)

The strip-shaped flat plate material is provided with a taper portion, the same width portion and a sharp portion from the base end in the longitudinal direction toward the tip,
The tapered portion has a shape that widens from the base end toward the tip to a position of at least half of the length from the base end to the tip,
The same width portion forms a shape with a constant overall width from the maximum width portion of the tapered portion toward the tip,
The pointed portion has a shape in which the width is reduced from the position near the tip of the same width portion toward the tip,
The same width portion has an inflection portion having a dogleg shape in a side view,
A beater for a tie tamper, which has a curved portion having a valley longitudinal direction in the longitudinal direction in a region closer to the tip than the inflection portion. The beater for a tie tamper according to claim 1, wherein a notch having a shape recessed toward the base end side is provided at the tip of the pointed portion. The beater for a tie tamper according to claim 1 or 2, wherein both side edge portions of the pointed portion have a curved shape that is convex in the width increasing direction. The angle formed between the same width portion on the base end side and the same width portion on the tip end side facing each other across the inflection portion is 150° to 163°. The beater for the listed tamper.

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