JP2012132186A - Work device, track travelling vehicle equipped with work device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a work device mounted on a track vehicle from contacting with ground equipment when travelling on a route whose track grade is low.SOLUTION: A Russel snow removal device 110 mounted on a vehicle body 101 is equipped with a flanger 112 in its front center. A flanger body 113 is configured to be able to rise and fall by means of an air cylinder 121. An excessive fall restriction members 114 equipped with a rail contact guide member 116 on the bottom surface of its lower end portion are fixed on both sides in the width direction of the flanger body 113. When a vehicle body is tilted on a route whose track grade is low, the excessive fall restriction members 114 (rail contact guide member 116) abuts on the top surface of a rail. Thereby, the lowermost end portion of the flanger is restricted not to fall more distance than a predetermined value from the top surface of the track.

Description

  The present invention relates to a technique for preventing breakage of ground facilities caused by a work device mounted on a track motor car or a railway vehicle.

  In snowy country railways, snow removal and snow removal work is performed by attaching snow removal devices to the ends of locomotives and track motor cars during snowfall and snowfall. Some Russell snow removal devices and snow plows have a movable member called a flanger at the lowermost end of the frontal head. At locations other than troubled parts such as railroad crossings and turnouts, the flanger is lowered between the rails of the track ( The snow accumulated between the tracks is drained. Japanese Laid-Open Patent Publication No. 6-280229 (Patent Document 1) discloses a track snowplow equipped with a Russell snowplow equipped with a flanger. Such a snow removal flanger is usually adjusted to a limit of about 30 mm or less below the rail surface (so that the lower end of the flanger does not drop more than 30 mm from the rail upper surface), but more than that when the vehicle body is tilted in the front-rear direction. May go down.

  On the other hand, between the rails of the track, there are places where ground facilities such as ATS (automatic train stop device) and ATC (automatic train control device) ground element (information transmission coil) are installed. When performing snow removal by lowering the flanger from the rail surface when performing work, ground equipment may be damaged due to the difference in rail height if the vehicle overhang is large.

  In fact, there was an accident that contacted the ground and the flanger buried between the rails on the 4th grade (track grade) of JR Hokkaido. In the accident example, the vehicle overhang was 5320 mm, the distance between the flanger and the ground element in a stationary state was 14 mm, and contact occurred when passing at a speed of 25 km / h.

In addition, the quaternary line rail state is recognized even when there is a height difference up to the following dimensions at a distance of 5 m in the worst case.
Maintenance target value, height difference: dynamic 19 mm, static: 11 mm
Maintenance standard value, height difference: Dynamic 30 mm, Static: 22 mm

  Considering the worst case, if the height difference of 30 mm of the maintenance standard value is before and after the wheel that is present (it is assumed that there is a wheel in the V-shaped valley formed by the rail), below the rail when level The flanger at 30 mm may drop to a position 84 mm below the rail. Since the buried height of the ground element is 70 mm ± 5 mm below the rail, if there is a ground element at the above conditions, the ground element comes into contact.

  In order to prevent this, there is a method of keeping the distance from the wheel to the flanger tip within 3000 mm. That is, it is a method of preventing contact by reducing the overhang of the vehicle.

However, the old Hymo (snow-carrying motor car with a Russell head attached to a track maintenance motor car) can be configured to overlap the Russell blades on the engine room (a method for reducing overhang), but has the following disadvantages.
-Decreased Russell performance (rake angle is 0 degree).
・ It is difficult to check the engine room unless the wings are opened each time. And the bolt fastening work at the time of detachment cannot be done,
The advantage of simple desorption is reduced.
・ The front / rear dimensions of the simple attachment / detachment wheel attached to the plow are shortened, and the stability during removal is reduced.
・ It is difficult to support the step-cutting device.

Therefore, it is preferable that the contact of the working device with the ground equipment can be prevented regardless of the overhang.
Although the description has been given here with the Russell snow removal device, in the work device attached to the end of the track traveling vehicle such as a rotary snow removal device or a civil engineering excavator, there is a risk that the work device and the ground equipment come into contact with each other depending on the track condition. It is the same as in the case of the Russell snow removal device.

  The present invention solves the above-mentioned problems in a working device attached to a conventional track vehicle, and is equipped with a working device that can reliably prevent contact with ground equipment even on a route with a low track grade, and the working device. It is an object of the present invention to provide an orbital traveling vehicle.

  According to the present invention, there is provided a working device attached to an end portion of a track-traveling vehicle according to the present invention, comprising a flanger that can be moved up and down, and a lowermost end portion between tracks when the flanger is lowered from the upper surface of the track. This is solved by providing an over-lowering restricting member for restricting the lowermost end of the flanger from descending beyond a predetermined value from the upper surface of the track.

It is preferable that the over-lowering restricting member is a member that is provided on both sides in the width direction of the flanger main body and whose lower end is in contact with the upper surface of the track to restrict the over-lowering of the flanger.
It is preferable that a rail contact guide member having an insulating property is attached to a contact portion between the overdescent regulating member and the track.

It is preferable that the rail contact guide member has a predetermined hardness and elasticity.
It is preferable that the rail contact guide member is made of hard urethane rubber.
It is preferable that the working device is a Russell snow removal device.

  Moreover, the said subject is solved by the track traveling vehicle characterized by mounting the working device of any one of Claims 1-6 to the vehicle end part by this invention.

  According to the working device and the track traveling vehicle equipped with the working device of the present invention, it is possible to reliably prevent the flanger from contacting the ground equipment regardless of the track grade. In addition, by providing an over-lowering restricting member in the flanger, it is possible to prevent damage to the ground equipment without reducing the overhang of the work device. There will be no decrease in detachability. Furthermore, since the configuration is simple, it is possible to suppress an increase in cost as much as possible, and it is easy to cope with a delivered vehicle (retrofit improvement to a conventional working device).

According to the second aspect of the present invention, the excessive lowering of the flanger can be reliably prevented by the excessive lowering restricting member coming into contact with the upper surface of the track.
With the configuration of the third aspect, it is possible to prevent a short circuit between the left and right tracks.

According to the configuration of the fourth aspect, the raceway surface can be prevented from being damaged. Moreover, the shock to the flanger side can be mitigated.
With the configuration of the fifth aspect, the rail contact guide member can be realized at low cost.

  According to the configuration of the sixth aspect, it is possible to prevent the ground facility from being damaged by the flanger of the Russell type snow removal device.

It is a top view which shows an example of the track snowplow provided with the snow removal work apparatus which concerns on this invention. It is a side view of the track snowplow. It is a front view of the track snowplow. It is sectional drawing seen from the side surface direction which shows the structure of a Russell snow removal apparatus. It is the front view which looked at the flanger and the Russell wing from the vehicle front. It is the side view which looked at the flanger from the vehicle side. It is a front view which shows the support part of a flanger. It is a front view of the snow removal device shown in a state where the flanger main body is raised to the maximum.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing an example of a track snowplow provided with a snow removal work device according to the present invention. FIG. 2 is a side view of the track snowplow, and FIG. 3 is a front view of the track snowplow. In these drawings, a track snowplow 100 is equipped with a Russell snowplow 110, which is a working device to which the present invention is applied, at the front end of a vehicle body 101. A rotary snow removal device 150 is attached to the rear end of the vehicle on the opposite side.

The vehicle body 101 is a general diesel locomotive, and its configuration is well known. Further, since the rotary snow removal device 150 has a conventionally well-known configuration, the description thereof is omitted.
As shown in FIGS. 1 to 3, the Russell snow removal device 110 has a Russell blade 111, and a flanger 112 is provided at the center of the front surface of the Russell blade 111. The Russell blade 111 is provided so that the blade tip portions 111a, 111a can be rotated from the middle, and can be folded as shown by the solid line from the unfolded state during the snow removal operation shown by the broken line in the figure. It has become. The front view of FIG. 3 shows a state at the time of forwarding in which the blade tip portions 111a and 111a are folded. At the time of snow removal work, as shown in FIGS. 1 and 2, the blade tip portions 111a and 111a are expanded to perform snow removal and snow removal work.

  FIG. 4 is a cross-sectional view showing the configuration of the Russell snow removal device 110 as viewed from the side. As shown in this figure, the Russell snow removal device 110 includes a frame 120 that supports the Russell wing 111, and the Russell snow removal device 110 is mounted on the frame of the vehicle main body 101 so that the Russell snow removal device 110 is turned into the track snow removal vehicle 100. Mounted and supported at the front end. In this embodiment, the distance from the front end of the frame of the vehicle body to the front end of the flanger 112 is 3012 mm. In this case, the distance (overhang) from the wheel (the front wheel of the vehicle main body 101) to the front end of the flanger is about 4500 mm.

  FIG. 5 is a front view of the flanger 112 (and the Russell wing 111) as viewed from the front of the vehicle. FIG. 6 is a side view of the flanger 112 as seen from the side of the vehicle. FIG. 7 is a front view showing the support portion of the flanger.

  As shown in these drawings, guide edges 114 and 114 are fixed by bolts on both sides (left and right sides) of the flanger main body 113 in the vehicle width direction. In addition, you may fix by not only bolt fixation but welding. Alternatively, the main body 113 and the guide edges 114 and 114 can be integrally configured. Then, the guide edges 114 and 114 fit into the slide guides 115 and 115 welded to the plow body (the back side of the Russell blade 111), and are lubricated with grease and vertically (an oblique vertical direction guided by the slide guide 115). It is possible to move to. Further, an air cylinder 121 is disposed between the flanger main body 113 and the frame 120 of the Russell snow removal device. By extending and contracting the air cylinder 121, the flanger main body 113 (and the guide edges 114, 114) are moved up and down. It is configured to be slidable (can be raised and lowered). The air cylinder has a high operating speed, and in this embodiment, the air cylinder is used as an actuator for raising and lowering the flanger body. 4 to 7 show the flanger (the main body 113 and the guide edges 114, 114) lowered to the set dimension (maximum value).

  As can be seen from FIG. 5 or FIG. 7, the guide edges 114, 114 have an “L” shape or an “inverted L” shape when viewed from the front, and the guide edges 114 are attached to both sides of the flanger body 113. The protruding portion 114a of the guide edge 114 (the “L” or “reverse L” horizontal bar portion) is provided on the rail. A rail contact guide member 116 made of an insulating material is attached to a surface (the bottom surface of the overhanging portion 114a) facing the rail upper surface of the guide edge overhanging portion 114a (FIGS. 5, 6, and 7). ). In this embodiment, the rail contact guide member 116 is made of urethane, and is hereinafter referred to as a urethane guide edge 116. The rail contact guide member 116 is not limited to urethane, and may be any material as long as it has insulating properties and appropriate strength.

  As described above, the guide edges 114 and 114 are fixed to the flanger main body 113, and when the flanger main body 113 is moved up and down by the air cylinder 121, the guide edges 114 and 114 also move integrally (up and down). In order to avoid the complexity of the description, raising and lowering the flanger body 113 and the guide edges 114 and 114 will be simply referred to as raising and lowering the “flanger body 113”.

  In the present embodiment, the distance (gap) between the lower surface of the urethane guide edge 116 and the upper surface of the rail is set to have a gap of 25 mm when the flanger main body 113 is lowered to the set dimension. Therefore, normally, even if the flanger main body 113 is lowered to the lowest position (to the set dimension), the urethane guide edge 116 does not contact the rail. However, depending on the track state, the vehicle body may tilt in the front-rear direction during traveling, and the flanger tip (tip of the main body 113) tends to fall below 30 mm below the rail surface. For example, there is a case where the height difference of 30 mm of the maintenance reference value is in front of and behind the current wheel. Even in such a case, in this embodiment, the bottom surface of the protruding portion 114a of the guide edge 114, 114 fixed to the flanger body 113 (the urethane guide edge 116 provided on the flange edge) abuts on the rail upper surface, so that the flanger body. 113 does not descend any more, and damage to the ground equipment by the flanger 112 can be prevented.

  That is, as shown in FIG. 4, in this embodiment, the distance from the flanger tip (lower end of the body 113) to the urethane guide edge 116 (center) is 536 mm (the distance from the frame tip of the vehicle body 101 to the flanger tip is 3012 mm, overhang is about 4500 mm). In FIG. 4, a flat (normal) line surface RL is indicated by a solid line, and a maximum inclination angle (assumed to be 0.71 degrees) that can be considered for a quaternary line is indicated by a one-dot chain line. In the normal line surface RL, the distance (gap) between the lower surface of the urethane guide edge 116 and the upper surface of the rail is 25 mm. In this state, the tip (lower end) position of the flanger 112 is 30 mm below the rail surface. On the other hand, in the case of the maximum inclination angle that can be considered by the quaternary line shown by the one-dot chain line, the urethane guide edge 116 comes into contact with the line surface (in this case, the one-dot chain line) and the gap becomes 0 (zero). Although it falls to 60.5 mm below the rail surface, it does not interfere with the top surface of the ground element embedded in 65 mm below the rail surface, and damage to the ground equipment can be avoided.

  In the present embodiment, the guide edges 114 and 114 having the urethane guide edge 116 abut on the rail upper surface depending on the track state during traveling, thereby preventing the flanger bottom end from contacting the ground equipment. That is, the guide edges 114 and 114 are excessive lowering restricting members that restrict the flanger lowermost end portion from descending beyond a predetermined value from the upper surface of the track. However, a rail contact guide member 116 (urethane guide edge 116 in the embodiment) made of an insulating material is provided on the bottom surface of the guide edge 114 in order to prevent a short circuit between the left and right rails and a scratch on the rail surface.

  As shown in FIG. 7, the width (size in the vehicle width direction) of the rail contact guide member (urethane guide edge 116) is assumed to be a minimum of 180 mm assuming a minimum curve radius of 160 m (160R) of the track. It is configured as follows. Thereby, even on a sharp curve with a small radius of curvature, the rail contact guide member 116 does not come off from the track surface, and damage to the ground equipment due to the flanger can always be prevented. The urethane guide edge 116 used in this embodiment is a hard urethane rubber having a hardness of 92 to 96 ° (Shore A hardness), a rebound resilience of 55% or more, and a thickness of about 50 mm. ing.

  FIG. 8 is a front view of the snow removal device shown with the flanger body 113 (the guide edges 114 and 114 on both sides are not shown) raised to the maximum. At this time, in the present embodiment, the lowermost end portion of the flanger 112 is located 95 mm above the rail upper surface. When lowered to the set dimension (maximum value), as described in FIGS. 4 to 7, the lowermost end of the flanger descends to 30 mm below the rail surface (in the case of a normal line). In the worst case that can be considered with the 4th class line, there is a possibility that it will drop to 60.5mm below the rail surface as described above (even in the worst case, the maximum lowering amount of the flanger bottom end is restricted to 60.5mm below the rail surface. Therefore, it does not interfere with the upper surface of the ground element embedded 65 mm below the rail surface.

  As described above, in the snow removal work device (Russell snow removal device 110) of the present embodiment, the flanger equipped in the Russell snow removal device is provided with a mechanism (over-lowering restriction member) that prevents damage to ground equipment. Regardless of the track grade, it is possible to reliably prevent the flanger from contacting the ground equipment. In addition, by providing an overdescent restricting member in the flanger, it is possible to prevent damage to ground equipment without reducing the overhang of the snow removal device (working device), so the snow removal performance (working performance) is degraded or checked. This does not cause a decrease in performance or a decrease in the detachability of the snow removal device (working device). Furthermore, since the configuration is simple, it is possible to suppress an increase in cost as much as possible, and it is easy to cope with a delivered vehicle (retrofit improvement to a conventional work device that does not include an overdescent regulating member).

  As described above, the present invention has been described by taking the Russell type snow removal device as an example. However, the present invention is not limited to this, and can be applied to a work device attached to an end of a track traveling vehicle, such as a rotary snow removal device or a civil engineering excavator. Therefore, it is possible to reliably prevent damage to the ground equipment caused by these working devices.

Moreover, the dimension of each part in embodiment is an example, and can be suitably set including the overhang amount of a working device, the descending amount of a working device, and the like.
Further, the actuator for raising and lowering the flanger in the snow removal device is not limited to the air cylinder, and an appropriate actuator such as a hydraulic cylinder or a motor can be employed. The number of actuators and attachment positions are also arbitrary. The shape and size of the flanger can be set as appropriate. Furthermore, the flanger is not limited to a sliding type, and a rotary type is also possible.

DESCRIPTION OF SYMBOLS 100 Track snowplow 101 Vehicle main body 110 Russell snow removal device 111 Russell wing 112 Flanger 113 Flanger main body 114 Guide edge (over-fall control member)
114a Overhang 115 Slide guide 116 Rail contact guide member (urethane guide edge)
121 Air cylinder

JP-A-6-280229

Claims (7)

In the working device attached to the end of the track traveling vehicle, provided with a flanger that can be raised and lowered, and the lowermost end portion between the tracks when the flanger is lowered, is located below the upper surface of the track,
An operating device comprising an over-lowering restricting member for restricting the lowermost end of the flanger from descending beyond a predetermined value from the upper surface of the track.   The over-lowering restriction member is a member that is provided on both sides in the width direction of the flanger main body and whose lower end is in contact with the upper surface of the track to restrict the over-lowering of the flanger. The working device described.   The working device according to claim 2, wherein a rail contact guide member having an insulating property is attached to a contact portion between the overdescent regulating member and the track.   The working device according to claim 3, wherein the rail contact guide member has predetermined hardness and elasticity.   The work device according to claim 3, wherein the rail contact guide member is made of hard urethane rubber.   The working device according to claim 1, wherein the working device is a Russell snow removal device. An orbital traveling vehicle comprising the work device according to any one of claims 1 to 6 mounted on an end portion of the vehicle.

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