JP2854559B2 - Method of replacing ballast on rail track floor and temporary rail support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of exchanging ballast on a track floor of a railway rail, and more particularly to a method of exchanging ballast in which temporary support of a rail after ballast is scraped out is performed using a special hydraulic jack. And a rail temporary support device for ballast replacement.

[0002]

2. Description of the Related Art In general, ballast is laid on a track floor of a railway rail to absorb shock vibration of the rail. Since the ballast deteriorates in shock absorbing capacity with the passage of time, it is periodically replaced with a new ballast.

[0003] For replacing old and new ballasts, a ballast removing vehicle that scrapes out the old ballast while traveling, and a ballast loading vehicle that loads a new ballast are used. As shown in FIGS. 9A and 9B, the ballast removing vehicle 2 has a scraping device 4 for scraping the ballast at the head thereof mounted overhanging slightly forward of the front wheels 6. The scraping device 4 has an endless scraper 12 which is disposed below the sleeper 8 so as to cross the rail 10 in the left-right direction, and is circulated from the lower side of the rail 10 to the ballast removing vehicle main body 2a. The ballast B is once scraped up to the ballast removing vehicle body 2a by the endless scraper 12, and the belt conveyor 1
The rails 4 and 4 cause the rails 10 to fall outside. 9, reference numeral 18 denotes a leading power supply vehicle, reference numeral 20 denotes an endless scraper driving device of the ballast removal vehicle 2, reference numeral 22 denotes a power vehicle following the ballast removal vehicle 2, and reference numeral 24 denotes a power vehicle 22.
Is the last hydraulic unit vehicle, and 26 is the last tool loading vehicle.

After the ballast B is removed, a recess 28 is formed in the track as shown in FIG.
When the front wheel 6a reaches the recess 28, the ballast removing vehicle 2 cannot be advanced because there is nothing to support the rail 10. Conventionally, in order to temporarily support the rail 10 in the recess 28, a plurality of wood blocks 30 are manually stacked as shown in FIG.

[0005]

The temporary support of the rail 10 by the wood block 30 is a very severe operation. The operation of replacing the ballast B itself is performed at midnight and very restricted between the last train and the first train, and is performed within a limited time. In addition, the work of inserting the wood block 30 is performed immediately after the scraping device 4 passes and before the ballast removing vehicle body 2a. This must be done within a fraction of a second before the wheels 6 come. In addition, the bottom surface of the recess 28 after the removal of the ballast B has irregularities, and the wood block 30 is not easily seated. A plurality of wood blocks 30 are placed on the bottom surface where
m, and the uppermost wood block 30a is wedge-shaped and hammered into the gap under the lower flange 10a of the rail 10 from the horizontal direction, and tens of tons are obtained by the wood blocks 30 thus stacked. The ballast removal vehicle 2 must be supported. Therefore, stacking the wood blocks 30 required considerable skill. Further, after the ballast removal vehicle main body 2a has passed and a new replacement ballast B has been put into the recess 28,
The timber block 30 which temporarily supported the rail 10 until then
Must be taken out of the ballast B for replacement. Top wedge-shaped wood block 3
Since 0 is hammered in, the ballast B cannot be pulled out immediately, and when it comes to the lowermost wood block 30, ballast B must be dug out by several people using a scoop with a rope or the like. If these wood blocks 30 are left buried, the impact of the rail 10 is not absorbed by the ballast B, and the next ballast scraping operation becomes impossible.

SUMMARY OF THE INVENTION An object of the present invention is to develop a temporary support device which can be easily mounted and removed under a rail, and to improve the efficiency of ballast replacement work of a track floor.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a step of scraping a ballast constituting a track of a rail with a scraping device attached to the head of a ballast removing vehicle. Engaging the upper end of a temporary support device having a hydraulic jack with the rail above the recess before coming on the rail above the recess after the ballast has been scraped; and elongating the temporary support device. Step of fixing the lower end of the temporary support device to the foundation, and after passing the main body of the ballast removal vehicle above the temporary support device,
The method includes a step of putting a replacement ballast into the recess, and a step of taking out the temporary support device buried in the replacement ballast.

The hydraulic jack of the temporary support device has a horizontal base plate attached to the lower end, and a bracket having an arm extending horizontally in the upper end is detachably attached.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1A shows a state where the temporary support device 32 according to the present invention is mounted below the rail 10. When the ballast removing vehicle 2 passes, such temporary support devices 32 are disposed under the left and right rails 10 at equal intervals every eight sleepers.

The temporary support device 32 is, as shown in FIG. 1B, a cylindrical hydraulic jack 34, a base plate 36 attached to the lower end of the hydraulic jack 34, and is detachably attached to the upper end of the hydraulic jack 34. And the bracket 38 provided. The base plate 36 is swingably attached via a ball joint 40 as shown in FIG. The bracket 38 has a cylindrical base end 38a that engages with an annular step formed on the outer peripheral surface of the hydraulic jack 34 as shown in FIG. The base end 38a is divided into two parts as shown in FIG. 6, and one half of the base end 38a is an opening / closing part H that can be opened and closed about the hinge pin 44. This opening / closing part H
Has a pin hole 46. When the opening / closing portion H1 is closed, the pin hole 46 is aligned with the pin hole 48 of the other base end 38a, and the lock pin 50 is inserted into the aligned pin holes 46, 48 to open and close. The section H is kept closed. The hinge pin 4
4 can also be inserted and removed, and the opening / closing portion H can be opened / closed about the lock pin 50, or both the hinge pin 44 and the lock pin 50 can be pulled out to remove the opening / closing portion H from the bracket 38. The bracket 38 is attached to the base end 3.
8a and has an arm 38b extending in the horizontal direction. The arm portion 38b includes a pair of left and right side plate portions P and a connecting plate portion C for connecting the distal end side and the base end side of the pair of side plate portions P to each other.
1 and C2, and the upper end of each side plate P is a base end 3
A pair of fixed claws 52 bent in a hook shape toward the side 8 are formed. A pair of movable claw portions 56 rotatable around a pin 54 are provided outside the base plate side of the side plate portion P. The movable claw portion 56 is constantly urged in a rising direction by a tension spring 58. A locking hole 60 is formed in the side plate portion P slightly above the pin 54.
Numeral 0 is aligned with a locking hole (not shown) of the movable claw 56 when the movable claw 56 is closed. Then, the lock pin 62 is inserted into the aligned locking hole 60 to lock the movable claw portion 56 at the upright position, that is, the closed position. As shown in FIGS. 5 and 6, the lower flange 10a of the rail 10 is sandwiched between both side edges by the fixed claw portion 52 and the movable claw portion 56.

As shown in FIG. 7, the hydraulic jack 34 has a nested multi-stage (two-stage) and includes an outer cylinder 34a, an intermediate cylinder 34
b, an inner cylinder 34c, and a base plate 36 is connected to a lower end of the inner cylinder 34c via a ball joint 40. A first piston 64 is disposed at an upper end of the inner cylinder 34c, and a second piston 66 is disposed at an upper end of the intermediate cylinder 34b. Then, when hydraulic pressure is introduced into the oil chamber 70 above the second piston 66 through the hose 68, first, the intermediate cylinder 34b
And the inner cylinder 34c are integrally lowered, and then the inner cylinder 34c is independently lowered. Conversely, when hydraulic pressure is introduced into the extended hydraulic jack 34 through the hose 72 below the second piston 66, that is, between the outer cylinder 34a and the intermediate cylinder 34b, first, the intermediate cylinder 34b and the inner cylinder 34c
Are raised integrally, and then the inner cylinder 34c is raised alone. Note that carrying handles 74 are fixed to both sides of the outer cylinder 34a, and the outer peripheral surfaces of the intermediate cylinder 34b and the inner cylinder 34c are provided between the lower end of the outer cylinder 34a and the lower end of the inner cylinder 34c. A telescopic bellows boot 94 for protecting the ballast B is mounted.

A hydraulic unit 76 for supplying hydraulic pressure to the temporary support device 32 is mounted on the hydraulic unit vehicle 24 at the rear of the knitting work vehicle shown in FIG. FIG. 8 shows a hydraulic system from the hydraulic unit 76 to the temporary support device 32. The oil pumped up by the pump 80 from the oil reservoir 78 is supplied to the pair of temporary support devices 32 via the solenoid valve 82 and the hoses 68 and 72.
To supply it. The solenoid valve 82 can be switched to three positions, a supply stop position 82a, a hydraulic jack extension operation position 82b, and a hydraulic jack shortening operation position 82c, and can be remotely operated by a remote control box 86 via an electric cable 84. Has become.

For temporary support of the rail 10, a plurality of sets of the above-mentioned temporary support device 32 are used as a pair of left and right. Specifically, as shown in FIG. 8, the temporary support devices 32 are arranged in pairs on the right and left every eight sleepers (every three in this case). These temporary support devices 32 are attached to the lower flange 10a of the rail 10 immediately after the scraping device 4 has passed, at the same timing as the insertion timing of the conventional wood block 30.
More specifically, as shown in FIGS. 1 to 5, the temporary support device 32 is previously shortened, and the bracket 38 is
Is hooked on the inner edge of the lower flange 10a of the rail 10, and then the movable claw 56 is
Hook on the outer edge of a and insert the lock pin 62. Thus, the temporary support device 32 is suspended from the lower flange 10a of the rail 10.

Next, the upper and lower ports 8 of the hydraulic jack 34
The hoses 68 and 72 are connected to 8, 90, and the button 86a of the remote control box 86 is pressed to extend the hydraulic jack 34. At a stage where it is confirmed by the pressure gauges 92a and 92b that the hydraulic jack 34 has been sufficiently extended and a predetermined hydraulic pressure has been generated, the extension of the hydraulic jack 34 is stopped and then the hose 6 is stopped.
8 and 72 are separated, and the front wheel 6 of the ballast removing vehicle main body 2a is advanced to the rail 10 above the temporary support device 32. Since the base plate 36 of the temporary support device 32 is swingable about the ball joint 40, even if there is unevenness on the bottom of the recess 28, the base plate 36 is inclined in accordance with the unevenness, so that the stability is good. In addition, a valve that automatically closes when the hose is disconnected is provided at the connection between the hoses 68 and 72.
Oil does not leak when desorbing.

The temporary support device 32 is attached to the lower flange 10a of the rail 10 one after another in accordance with the advance of the ballast removing vehicle 2, and the same operation as described above is repeated. Then, after the ballast removing vehicle 2 passes, a vehicle (not shown) loaded with the replacement ballast B arrives, and a new ballast B is put into the recess 28 of the roadbed. At this time, the temporary support state of the rail 10 must be continued in order to pass the replacement ballast loading vehicle, so the temporary support device 32 is left as it is. Although the temporary support device 32 is buried in the replacement ballast B, the bracket 38 can be easily separated from the hydraulic jack 34 by pulling out the lock pin 50, and the lock pin 62 is pulled out to move the movable claw portion 56 outward. The lower flange 10a of the rail 10
It can be easily removed from. After removing the bracket 38, the hydraulic jack 34 may be pulled upward from the ballast B. Since the hydraulic jack 34 has a vertical cylindrical shape, the hydraulic jack 34 can be easily pulled out of the ballast B as compared with the conventional horizontally stacked wood block 30.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above embodiment, one hydraulic jack 34 is used for one temporary support device 32. However, both ends of the bracket 38 can be supported by a pair of left and right hydraulic jacks 34. In this case, the bracket 38 is cantilevered. The rails are not supported but are supported at both ends.
0 withstand load can be increased.

[0017]

As described above, the present invention uses a temporary support device with a hydraulic jack that can be suspended by engaging with the lower flange of the rail and temporarily extending the hydraulic jack to temporarily support the rail. The temporary support device can be easily mounted and the hydraulic jack can be easily extended even in a short time after the passage, and the conventional work of stacking wood blocks and temporarily supporting the rails can be relieved. Moreover, since the temporary support device is vertically long, even if it is buried in the replacement ballast, it can be pulled up relatively easily, eliminating the need for complicated work such as digging the conventional horizontal pile of wood blocks from the top down to the bottom. Is also released. Therefore, the ballast replacement work can be completed efficiently and in a short time by a small number of people.

[Brief description of the drawings]

FIG. 1A is a perspective view of a rail with a temporary support device mounted thereon, and FIG. 1B is a perspective view of a temporary support device alone.

FIG. 2 is a plan view of a rail on which a temporary support device is mounted.

FIG. 3 is a front view of a rail on which a temporary support device is mounted.

FIG. 4 is a side view of a rail on which a temporary support device is mounted.

FIG. 5 is a front view of a temporary support device and rails.

FIG. 6 is a plan view of a temporary support device and rails.

FIG. 7 is a longitudinal sectional view of a hydraulic jack of the temporary support device.

FIG. 8 is a hydraulic system diagram of a temporary support device.

FIG. 9A is a plan view of a multi-train work vehicle for ballast replacement, and FIG. 9B is a side view of the vehicle.

FIG. 10 is a side view of a conventional temporary supporting device using a wood block.

[Explanation of symbols]

 Reference Signs List 10 rail 28 recess 32 temporary support device 34 hydraulic jack 36 base plate 38 bracket 52 fixed claw portion 56 movable claw portion 76 hydraulic unit 86 remote control box B ballast

──────────────────────────────────────────────────続 き Continuing on the front page (72) Mikio Ushinawa 1-4-1 Meiji Station, Nakamura-ku, Nagoya City, Aichi Prefecture Tokai Passenger Railway Co., Ltd. 1-4-12 Kameshima CN Construction Co., Ltd. (72) Inventor Yasuo Morikawa 3-8-2 Oyodonaka, Kita-ku, Osaka-shi, Osaka Inside Oyodo-Piesel Co., Ltd. (72) Inventor Hiroyuki Satone Osaka-shi, Osaka 3-8-2, Oyodonaka, Kita-ku Inside Oyodo-Piesel Co., Ltd. (56) References Jiryu Sho 57-151405 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E01B 27 / 02

Claims (2)

(57) [Claims] 1. A step of scraping a ballast constituting a track of a rail by a scraping device attached to a head of a ballast removing vehicle, and a step of scraping a ballast by a main body of the ballast removing vehicle onto a rail above a recess. Before coming, engaging the upper end of the hydraulic jack with the rail above the recess; elongating the hydraulic jack and fixing the lower end of the hydraulic jack as a foundation; and A step of introducing a replacement ballast into the recess after passing over the hydraulic jack, and a step of removing the hydraulic jack buried in the replacement ballast. How to replace ballast. 2. A hydraulic jack having a horizontal base plate attached to a lower end thereof, a base end detachably attachable to an upper end of the hydraulic jack, and a base extending horizontally from the base end. A temporary rail supporting device for ballast replacement, comprising: a bracket having an upper side and an arm for engaging and supporting a lower portion of a rail.