JPH05338537A - Parent and child truck for curve rail traveling - Google Patents

Abstract

PURPOSE:To provide an economical parent and child truck which can travel on a curve rail having a small radius of curvature. CONSTITUTION:The parent and child truck is provided with; totally four sets of turnable single-wheel bogies 22 vertically installed respectively at four corner parts underneath a vehicle body of a longitudinal parent truck on which a transversely movable child truck 20 to be separated as required is mounted; flangeless wheels 13 respectively mounted on the single-wheel bogies 22; a pair of guide rollers 23 moving along rail top part side surfaces for guiding the wheels 13; and a traveling motor attached to at least one of the four sets of the single-wheel bogies. It is also provided with a bogie sliding mechanism for supporting slidably in the width direction of the parent bogie 11 to a truck body either of right and left two sets of the single-wheel bogies 22 with respect to the advancing direction of the parent bogie 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parent-child truck for traveling on curved rails, which is used for transporting heavy objects such as steel plate coils in a factory.

[0002]

2. Description of the Related Art For example, a parent-child truck for moving a steel sheet coil or the like in a factory is used when transferring a steel sheet coil from one line in a factory to another line or from a factory to an adjacent warehouse. There is. Since it is difficult to lay a curved rail with a large radius of curvature in a factory like a general railroad, conventionally, as shown in the plan view of FIG. 2b and 2c are provided, and from the parent carriage 1a on the traveling rail 2a to the traveling rail 2
When passing the steel plate coil to the parent carriage 1b or 1c of b or 2c, the child carriage 3 mounted on the parent carriage 1a uses the coil mount on the swivel base 5 provided at the intersection of the rail 4 for the child carriage 3 as a relay point. The steel plate coil is passed from the child car 3 to the parent car 1b or 1c. The child carriage rails 4 arranged at other locations are rails leading to the processing line or the coil storage area.

[0003]

However, in the above-mentioned conventional equipment, the coils are passed between the respective track lines of the parent vehicles 1a, 1b, 1c via the swivel base 5 in relation to each other.
It takes time to transport the coils between the lines, and only one or two parent-child trucks can be operated on each rail line 2a, 2b, 2c. For example, if two parent-child carts are placed on one rail line, the two vehicles will interfere with each other, and there will be a problem that the two parent-child carts cannot be operated sufficiently.

The present invention has been proposed in view of the above circumstances, and an object thereof is to provide an economical parent-child truck for traveling on curved rails which enables traveling of the parent-child truck on a curved rail having a small radius of curvature. And

[0005]

To this end, the present invention is provided at four corners on the lower surface of a vehicle body of a vertically oriented parent carriage carrying a laterally movable child carriage separated as necessary. A total of four sets of single-wheel bogies capable of turning, a flangeless wheel attached to each of the above-mentioned single-wheel bogies, and a pair of guides that are driven along the rail head side faces to guide the wheels along the rail. A roller, a traveling motor attached to at least one single-wheel bogie of the four sets of single-wheel bogies, and two left-right single-wheel bogies in the traveling direction of the parent bogie. And a bogie sliding mechanism that supports the vehicle body in a slidable manner in the width direction.

[0006]

According to this structure, the parent carriage is mounted on the traveling rail by four flangeless wheels of a single-wheel bogie capable of turning, and a plurality of guide rollers contacting the rail head side surface of each single-wheel bogie. By this action, the flangeless wheels are guided along the rails and traveled by the drive of a travel motor provided on at least one single-wheel bogie. When the parent truck travels on the curved rail section, the axis passing through the symmetrical single-wheel bogie on the truck deviates from the radius of curvature of the curve rail, and the space on the left and right rails corresponding to the wheels of the single-wheel bogie is substantially. When it spreads out, either the left or right single wheel bogie on the parent bogie will automatically slide in the bogie axial direction by the action of the sliding mechanism on the bogie, and the single wheel bogie will automatically change when the rail spacing changes substantially. It is possible to stably follow a curved rail having a small radius of curvature by following the target.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall plan view thereof, FIG. 2 is a partially enlarged view showing a transitional portion from a straight line portion to a curved portion of FIG. FIG. 4 is a plan view showing an embodiment of the parent-child cart, FIG. 4 is a side view taken along the line IV-IV of FIG. 3, FIG. 5 is a cross-sectional view taken along the line VV of FIG.
VI-VI arrow cross-sectional view, FIG. 7 is a VII-VII arrow side view of FIG. 6, and FIG. 8 is a plan view of FIG.

First, in FIG. 1, the traveling rail 12 is a straight rail portion 12a composed of a pair of left and right parallel rails.
And a curved rail portion 12b having a small radius of curvature are continuous to form a closed loop running path that passes through a processing line in the factory, a coil storage area, and the like. Here, the traveling rails of the child carriage 3 mounted on the parent carriage 11 are a plurality of pairs of child carriage rails 4 extending in a horizontal direction at right angles from the straight rail portion 12a, and are at a slightly higher level than the traveling rail 12. It is lined up. In addition to the L-shape, the traveling rail 12 is laid so as to form an arbitrary closed loop such as a T-shape or a rectangular shape according to the layout in the factory.

Next, in FIG. 2, on the lower surface of the parent carriage 11, there are provided wheels 13 which can be independently turned at four corners thereof via a single wheel bogie, as will be described later.
The figure shows a state in which the parent carriage 11 is positioned on the straight rail portion 12a and the curved rail portion 12b, respectively, and 14 is the center point of the radius of curvature of the curved rail portion 12b.

In the above figure, when the parent carriage 11 moves to the curved rail portion 12b as shown by the arrow, the wheels 1
The straight line 13b connecting the ground contact points 13a, 13a to the rail 12b of No. 3 is the radial line 14a of the radius of curvature of the curved rail portion 12b.
With respect to the horizontal plane, an angle α is deviated.

As a result, the wheels 13 'and 13' shown by broken lines are shown.
Moves to positions 13 and 13 shown by solid lines, respectively, and the wheel 1
3 and the ground contact points 13a and 13a of the rail 12b are wider than the distance between the rails 12 and 12 on the rail radial direction line 14a by a distance ΔL. 15 is this wheel 1
In order to allow the change ΔL of the interval of 3 and 13, the parent carriage 11
This is a sliding mechanism provided between the vehicle body and the left or right wheel 13.

Next, the structure of the parent and child carriage will be described with reference to FIGS. 3 to 8. First, in FIGS. 3 to 4, 16 is a vehicle body of the substantially rectangular parent carriage 11, and 17 is provided in the center of the upper surface of the vehicle body 16. Coil pedestal, 18 is a steel plate coil supported by the coil pedestal 17, 19 is a recessed groove directly below the pedestal and has a rectangular cross section extending through in the width direction of the vehicle body, 20 is a rail 4'above the rail. Subcarriage mounted on board, 21 is subcarriage 3
The upper coil receiving jacks 22 are independent single-wheel bogies provided below the four corners of the vehicle body 16 and capable of independent turning.

As shown in FIGS. 5 and 6, the single-wheel bogie 22 has a flangeless wheel 13 and the wheel 13 which is a rail 12.
A plurality of pairs of vertical guide rollers 23 contacting the side surface of the head of the rail 12 are provided for guiding along, and at least one of the single-wheel bogies 22 is a projecting stand 24 (FIG. 4) protruding from the frame of the bogie 22. A traveling drive unit including a motor 25, a speed reducer 26, and a disc brake 27 is attached to the top.

As shown in FIGS. 5 to 8, the bogie 22 has a bearing seat 29 mounted on the bogie 22 via a slewing bearing 28.
6, the single wheel bogie 22 on one side is attached to the vehicle body 16 via a sliding mechanism 15 including a groove type slide gear 30 fixed on a bearing seat 29 and a guide rail 31 fixed in the vehicle body width direction. On the other hand, it is attached so that it can slide in the vehicle width direction.

Further, the parent carriage 11 includes traveling rails 12, 1
The current collecting portion 35 moving along the rail 34 on the frame 33 arranged in the vertical pit 32 between the two is brought into contact with the trolley wire 36 supported under the frame 33 to receive electric power, and the child carriage 3 moves. The vehicle is traversed by a power source on the parent carriage 11 or a power supply from a trolley wire (not shown) along the child carriage rail 4.

In such a structure, the parent carriage 11 is
As shown in FIG. 4, traveling is stopped by remote control of the traveling motor 25, and in the linear rail portion 12a, as shown in the upper half of FIG. As shown in FIG. 6, the wheels 13 run toward the inside of the mechanism 15 and are guided by the guide rollers 23 so that the wheels 13 travel in the longitudinal direction of the rails. When entering the lower half curve rail portion 12b, the wheels 13 follow the spread of the ground contact points 13a, 13a of the wheels 13, 13 via the guide roller 23 and the sliding mechanism 15, and the right wheels 13, 13 slide. When the vehicle runs near the outside of the moving mechanism 15 and further advances to the straight rail portion 12a, the outside wheel 13 approaches the inside and can automatically cope with a change in the distance between the ground contact points 13a of the wheels.

With this configuration, the parent carriage 11 can be made to travel along the curved rail 13b having a small radius of curvature, and the traveling rail 12 of the parent carriage 11 is configured as a closed loop runway as shown in FIG. By circulating a plurality of carriages 11 in a fixed direction, it is possible to obtain an effect of significantly increasing the carrying capacity of the parent-child carriage 11. In the above-described device, the respective shapes and combinations of the parent carriage 11, the turning single-wheel bogie 22, the sliding mechanism 15, the current collector 35, etc. are not limited to those shown in the above embodiment, and may be changed appropriately. Can be carried out.

[0018]

In summary, according to the present invention, the vertical parent carriage, which is equipped with a laterally movable child carriage which is separated as necessary, is vertically rotatable at each of the four corners of the lower surface of the vehicle body. A total of four sets of single-wheel bogies, a flangeless wheel attached to each of the above single-wheel bogies, and a pair of guide rollers that are driven along the rail head side surfaces to guide the wheels along the rails; A traveling motor attached to at least one single-wheel bogie of the four sets of single-wheel bogies, and a left or right two with respect to the traveling direction of the parent carriage.
By having a bogie sliding mechanism that supports the single-wheel bogie of the set slidably in the width direction of the parent carriage on the vehicle body,
Because we obtain an economical parent-child truck for traveling on curved rails that allows the parent-child truck to travel on a curved rail with a small radius of curvature,
The present invention is extremely useful in industry.

[Brief description of drawings]

FIG. 1 is an overall plan view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged view showing a transition portion from a straight line portion to a curved portion in FIG.

FIG. 3 is a plan view showing an embodiment of the parent-child cart of the present invention.

FIG. 4 is a side view taken along the line IV-IV in FIG.

5 is a transverse cross-sectional view taken along the line VV of FIG.

6 is a transverse cross-sectional view taken along the line VI-VI of FIG.

FIG. 7 is a side view taken along the line VII-VII in FIG.

FIG. 8 is a plan view of FIG.

FIG. 9 is a plan view showing an arrangement of conventional parent-child truck equipment.

[Explanation of symbols]

 3 Small bogie 4,4 'Child bogie rail 11 Parent bogie 12 Parent bogie traveling rail 12a Straight rail 12b Curve rail 13,13' Flangeless wheel 13a Grounding point 13b Straight 14 Curvature center 14a Curvature radius direction Line 15 Sliding mechanism 16 Car body 17 Coil cradle 18 Steel plate coil 20 Child trolley 21 Coil receiving jack 22 Single wheel bogie 23 Guide roller 24 Overhanging platform 25 Traveling motor 26 Reducer 27 Disc brake 28 Slewing bearing 29 Bearing seat 30 Groove type slide Recess 31 Guide rail 32 Longitudinal pit 33 Stand 34 Rail

Claims (1)

[Claims] 1. A total of four sets of single-wheel bogies, each of which is vertically erected at each of four corners of the lower surface of a body of a vertically oriented parent carriage equipped with laterally movable child carriages which are separated as required. A flangeless wheel attached to each of the single-wheel bogies, a pair of guide rollers that follow the rail head side surfaces to guide the wheels along the rail, and the four pairs of single-wheel bogies. The traveling motor attached to at least one single-wheel bogie and two sets of the left and right single-wheel bogies with respect to the traveling direction of the parent bogie are freely slidable on the vehicle body in the width direction of the parent bogie. A parent-child truck for traveling on curved rails, which is provided with a bogie sliding mechanism that supports it.