JP5797817B1 - Rail vehicle guidance device - Google Patents

Abstract

In a guide device for a track vehicle, durability of guide wheels is improved and high running stability is maintained. A track vehicle includes four traveling wheels made of rubber tires and travels along a single track that is laid on a traveling surface. The guide device of the vehicle 1 includes a guide arm 30 provided on the bottom surface of the vehicle body, and guide wheels 31 and 32 provided at both front and rear ends of the guide arm 30. The track 10 has a pair of left and right guide rails 11 and 12 extending at a predetermined interval with the guide wheels 31 and 32 interposed therebetween. The outer shape of the cross section of the opposed surfaces of the pair of left and right guide rails 11 and 12 is an arc. [Selection] Figure 1

Description

  The present invention relates to an apparatus for guiding a track vehicle that travels along a track.

  2. Description of the Related Art A track vehicle that includes a traveling wheel that supports a vehicle body and a guide wheel that is guided by a track laid on a traveling surface and that travels along the track by driving the traveling wheel has been put into practical use.

  For example, in Patent Document 1, as shown in FIG. 8, a traveling wheel 120 made of a pair of left and right rubber tires provided at the front and rear of the vehicle body, and 2 provided at the center in the vehicle width direction at the bottom of the front and rear parts of the vehicle body. There is disclosed a track vehicle that includes two guide arms 130 and two guide wheels 131 (132) that are attached to both front and rear ends of each guide arm 130 and rotate about an axis extending in the vertical direction of the vehicle body. The guide arm 130 has a swing center in the center, and swings in a plane (horizontal plane) parallel to the bottom surface of the vehicle body. Further, a steering mechanism 125 for steering the traveling wheel is provided between the guide arm 130 and the traveling wheel 120.

  On the other hand, a track made of a U-shaped rail member 110 is laid on the traveling surface of the vehicle. When the traveling wheel 120 is driven, the guide wheels 131 and 132 at both ends of the guide arm 130 move in the rail member 110 side by side. At this time, if the guide wheels 131 (132) simultaneously contact the wall surfaces on both sides of the rail member 110, the vehicle cannot travel. Therefore, the distance between the wall surfaces on both sides is made larger than the diameter of the guide wheel 131 (132). When the vehicle bends on the curve of the track, the guide arm 130 rotates according to the curvature of the curve, and the traveling wheel 120 is steered in conjunction with the movement of the guide arm 130 with the steering mechanism 125.

Similarly, Patent Document 2 discloses a track vehicle including traveling wheels 220, guide arms 230, and guide wheels 231, 232 as shown in FIG. In particular, in this track vehicle, the guide wheels 231 and 232 are mounted at different height positions. On the other hand, the guide groove 210 constituting the track has the guide wheel 231 (232) on either the left or right side of the guide groove 210. It is formed so as to always contact the wall surface.
According to this configuration, there is no gap between the guide wheels 231 and 232 and one of the wall surfaces of the guide groove 210 while the vehicle is traveling, so that the guide wheels rotate smoothly.

JP 2006-347426 A Japanese Patent Laid-Open No. 51-60313

By the way, the track vehicle disclosed in Patent Documents 1 and 2 travels while the peripheral surface of the guide wheel 331 (332) rotating in the horizontal plane is in contact with either the left or right wall surface. Further, when the track vehicle turns a curve, the rubber tire is bent by receiving a centrifugal force, and the axis Y of the guide wheel 331 (332) is inclined in the left-right direction as shown in FIG.
At this time, when the guide wheel 331 (332) has a flat shape (FIG. 10 (a)), the end thereof is pressed against the wall surface (wall surface 362 in the figure) to cause partial wear, while the guide wheel 331 ( 332) has a shape that is long in the vertical direction (FIG. 10B), a part thereof is pressed against the corner of the wall surface and is damaged.

In addition, when the vehicle travels on a traveling surface having different slopes at the front and rear of the vehicle body, such as when shifting from a downhill road to a flat road (see FIG. 11) or when shifting from a flat road to an uphill road, The axis Y of the guide wheel 331 and the traveling direction T of the vehicle are not orthogonal. The angle between the axis Y and the traveling direction T changes with time as the vehicle travels. As a result, rubbing occurs between the guide wheel 331 (332) and the track wall surface 361 (362), and a strong brake acts on the vehicle.
In FIG. 11, only the guide wheel 331 at the front part of the guide arm is shown, and the guide wheel 332 at the front part of the guide arm is omitted.

  As described above, the conventional track vehicle has a problem of durability that the guide wheels are unevenly worn or damaged, and a problem that a strong brake acts on the vehicle to prevent stable traveling.

  Accordingly, an object of the present invention is to improve the durability of guide wheels and maintain high running stability in a guide apparatus for a track vehicle.

  In order to solve the above-mentioned problems, a track vehicle guide device according to the present invention is configured as follows.

The invention according to claim 1 of the present application is a guide device for a track vehicle that includes a traveling wheel formed of a pair of left and right rubber tires provided at the front and rear of a vehicle body and travels along a single track laid on a traveling surface. There,
A guide arm provided at a central portion in the vehicle width direction on the bottom surface of the front and rear portions of the vehicle body;
Guide wheels provided at both front and rear ends of each guide arm so as to be rotatable about an axis extending in the vertical direction;
The guide wheel is a cylindrical body having a center line extending in the vertical direction,
Said track includes a pair of guide rails across said respective guide wheel extends at a predetermined distance from each other, the outer shape of the opposing surfaces of the cross-section of the left and right pair of guide rails Ri arc der,
It is further provided with a pair of left and right track deviation prevention rollers provided to be rotatable around an axis extending in the vehicle width direction below the guide rail and preventing deviation from the track of the vehicle body .

The invention according to claim 2 is the invention according to claim 1,
The guide rail is a pipe member having a circular cross section.

  According to the invention described in claim 1 of the present application, even if the axis of the guide wheel is tilted in the left-right direction when the vehicle turns a curve, the guide wheel is a cylindrical body, and the pair of left and right guide rails Since the outer shapes of the cross sections of the surfaces facing each other are arcs, the guide wheel and the guide rail come into point contact. Thereby, the partial wear of a guide wheel and a damage are fully suppressed.

  Further, when the vehicle travels on a traveling surface having different slopes at the front and rear of the vehicle body, the guide wheels and the guide rail do not rub between each other due to the point contact. Thereby, a strong brake does not act on the vehicle.

In particular, according to the present invention, even when the vehicle body rises, for example, when the vehicle moves from a downhill road to a flat road, the track departure prevention roller contacts the guide rail, thereby preventing the vehicle body from departing from the track. Will be.

As described above, the durability of the guide wheels can be improved, and the high running stability of the track vehicle can be maintained.

According to invention of Claim 2, the effect of Claim 1 is concretely achieved by using the pipe member which has a circular cross section as a guide rail.

It is a top view which shows the guide apparatus of the track vehicle which concerns on embodiment of this invention. It is the sectional view on the AA line of FIG. It is a side view which shows the guide apparatus of the track vehicle which concerns on embodiment of this invention. It is a top view corresponding to FIG. 1 which shows a track vehicle when turning a curve. It is sectional drawing corresponding to FIG. 2 which shows a track vehicle when turning a curve. It is sectional drawing corresponding to FIG. 2 which shows a tracked vehicle (comparative example) when turning a curve. It is the elements on larger scale of the side view which shows the guide apparatus of the track vehicle which concerns on embodiment of this invention corresponding to FIG. 11, (a) shows a vehicle front part, (b) shows a vehicle rear part. 1 is a cross-sectional view showing a track vehicle disclosed in Patent Document 1. FIG. 10 is a cross-sectional view showing a track vehicle disclosed in Patent Document 2. FIG. It is a figure for demonstrating the subject of the conventional track vehicle. It is a figure for demonstrating the subject of the conventional track vehicle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification, terms indicating directions such as “front, back, left, right” indicate directions when the traveling direction of the vehicle is “front”.

  First, the structure of the vehicle 1 and its guide device will be described with reference to FIGS. 1 to 3.

  The vehicle 1 is a track vehicle that travels along a single track 10 laid on a travel surface. The vehicle 1 includes a pair of left and right traveling wheels 20 provided at the front and rear of the vehicle body, a guide arm 30 provided at the center in the vehicle width direction on the bottom surface of the front and rear portions of the vehicle body, and a motor 40 that drives the traveling wheels 20. The guide device is a device that guides the vehicle 1, and includes a track 10 on the traveling surface, a guide arm 30 of the vehicle 1, and the like.

  The traveling wheel 20 is made of a rubber tire. The traveling wheel 20 is connected to a differential device (not shown) by a drive shaft 21 via a bearing portion 22 and a universal joint 23. A knuckle arm 24 is fixed to the bearing portion 22. A tie rod 25 as a steering mechanism for steering the traveling wheel 20 is connected to the knuckle arm 24.

  The guide arm 30 has a swing shaft 33 provided at the center thereof, and swings in a horizontal plane with the swing shaft 33 as a fulcrum. In addition, bracket members 34 connected to the tie rods 25 are attached to the left and right of the guide arm 30.

  As shown in FIGS. 2 and 3, the swing shaft 33 of the guide arm 30 is joined to the mounting plate 35 on the upper side. As shown in FIG. 3, the guide arms 30 at the front and rear portions of the vehicle are attached to the bottom surface of the vehicle body via the attachment plate 35.

  Guide wheels 31 and 32 that are guided by the track 10 are provided at both front and rear ends of the guide arm 30. The guide wheels 31 and 32 are cylindrical bodies having a center line extending in the vertical direction. The material of the guide wheels 31, 32 is, for example, resin. As shown in FIG. 2, a rotating shaft 36 extending in the vertical direction is inserted through the guide arm 30. The guide wheels 31 and 32 are attached to the rotary shaft 36 via bearings, and can freely rotate around the rotary shaft 36 (axial center).

  The rotating shaft 36 is joined to a connecting member 37 extending in the front-rear direction of the vehicle body on the lower side. A roller shaft 38 extending in the vehicle width direction is inserted through the front portion of the connecting member 37. A pair of left and right track deviation prevention rollers 39 is attached to the roller shaft 38, and the roller 39 can freely rotate around the roller shaft 38 (axis) under the guide rails 11 and 12. . For example, when the vehicle body is lifted when the vehicle 1 moves from a downhill road to a flat road, the track deviation prevention roller 39 contacts the guide rails 11 and 12. Thereby, the deviation from the track of the vehicle body is prevented.

  As shown in FIG. 3, the motor 40 is provided in the front part of the vehicle body. The driving force from the motor 40 is transmitted to the rear traveling wheels 20 via the rear differential. That is, the vehicle 1 is a rear wheel drive type. However, the present invention is not limited to this, and may be a front wheel drive type or a four wheel drive type.

  As shown in FIG. 2, the track 10 is formed by a pair of left and right guide rails 11, 12, a plate member 13 that defines the traveling surface of the vehicle 1, a grooved steel 14 that supports the plate member 13, and the like. The guide rails 11 and 12 are pipe members having a circular cross section extending at a predetermined interval from each other with the guide wheels 31 and 32 interposed therebetween. The guide rails 11 and 12 are joined to the plate member 13 and the joining auxiliary member 15. The joining auxiliary member 15 is joined to the grooved steel 14.

  In addition, although not shown, a power transmission rail is attached to the grooved steel 14, and an insulating trolley wire is fixed to the power transmission rail. The connecting member 37 is attached with a current collector that slides in contact with the conductor of the insulated trolley wire. The current collector is electrically connected to the motor 40.

  Next, the operation of the vehicle 1 and its guide device will be briefly described with reference to FIGS.

  During traveling, the motor 40 is driven by the electric power supplied from the insulated trolley wire via the current collector, and the traveling wheel 20 is driven. When the traveling wheel 20 is driven, the guide wheels 31 and 32 at both ends of the guide arm 30 are moved forward and backward along the track 10.

  When the vehicle 1 turns a curve, as shown in FIG. 4, the guide arm 30 rotates according to the curvature of the curve, and the traveling wheel 20 is steered in conjunction with the movement of the guide arm 30 with the tie rod 25. At this time, as shown in FIG. 5, the rubber tire of the traveling wheel 20 is deflected by receiving a centrifugal force, and the axis Y of the guide wheel 32 (31) is inclined in the left-right direction. 5 and 6 indicates a direction perpendicular to the axis Y of the guide wheel, and coincides with the vehicle width direction when the axis Y does not tilt. Moreover, the symbol CP in the figure indicates a point where the guide wheel 32 (31) and the guide rail 12 (11) are in contact with each other.

  As shown in FIG. 6 (comparative example), when the guide rail is the wall surface 61, 62, a part of the guide wheels 31, 32 may be pressed against the corner of the one wall surface 61 (or 62) to be damaged. In addition, the guide wheels 31 and 32 may simultaneously contact the wall surfaces 61 and 62 on both sides, and the vehicle 1 may not be able to travel.

On the other hand, according to the present embodiment, the guide wheels 31 and 32 and the guide rails 11 and 12 are in point contact even if the axis Y of the guide wheels 31 and 32 is tilted in the left-right direction when the vehicle 1 turns a curve. Therefore, damage to the guide wheels 31 and 32 is sufficiently suppressed.
Further, as can be seen from FIG. 5, since the guide rails 11 and 12 have a circular cross section, the guide wheels 31 and 32 do not contact the guide rails 11 and 12 on both sides at the same time unless the vehicle body is tilted so much. .

  Further, when the vehicle 1 travels on a traveling surface having different slopes at the front and rear portions of the vehicle body, such as when shifting from a downhill road to a flat road, the guide wheels 31 (32) and the guide rails 11 (12). As a result of the point contact, there is no rubbing between them, and therefore a strong brake does not act on the vehicle.

  Although the brake mechanism for intentionally stopping the vehicle 1 has not been described in detail, for example, a regenerative brake may be used, or a mechanical brake may be provided.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the embodiment, and various modifications and improvements may be added to the above embodiment.

  For example, if the cross-sectional outer shape of the mutually opposing surfaces of the guide rails 11 and 12 is an arc, the guide wheels 31 and 32 and the guide rails 11 and 12 come into point contact when the vehicle 1 turns a curve. The guide rails 11 and 12 are not pipe members having a circular cross section, but may be pipe members having a semicircular cross section or pipe members having a fan-shaped cross section, for example.

  Further, the roller shaft 38 to which the track deviation prevention roller 39 is attached is not necessarily provided at the front portion of the guide arm 30, and the connecting member 37 such as the rear portion of the guide arm 30 according to the layout of the current collector or the like. It may be provided at any position along the length.

  As described above, according to the present invention, the durability of the guide wheels can be improved and the high traveling stability of the track vehicle can be maintained. Therefore, the present invention is suitable in the field related to the track vehicle, for example, the manufacturing field thereof. May be used.

1 Vehicle, 10 Track, 11, 12 Guide Roller, 20 Traveling Wheel, 25 Tie Rod, 30 Guide Arm, 31, 32 Guide Wheel, 39 Track Deviation Prevention Roller, 40 Motor

Claims (2)

A guide device for a track vehicle that includes traveling wheels made of a pair of left and right rubber tires provided on the front and rear of a vehicle body, and that travels along a single track laid on a traveling surface,
A guide arm provided at a central portion in the vehicle width direction on the bottom surface of the front and rear portions of the vehicle body;
Guide wheels provided at both front and rear ends of each guide arm so as to be rotatable about an axis extending in the vertical direction;
The guide wheel is a cylindrical body having a center line extending in the vertical direction,
Said track includes a pair of guide rails across said respective guide wheel extends at a predetermined distance from each other, the outer shape of the opposing surfaces of the cross-section of the left and right pair of guide rails Ri arc der,
A track vehicle, further comprising a pair of left and right track departure prevention rollers that are rotatably provided around an axis extending in the vehicle width direction below the guide rail and prevent the vehicle body from departing from the track. Guide device. The guide rail is a pipe member having a circular cross section,
The track vehicle guidance device according to claim 1.

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