JP2002037060A - Drive device for single rail vehicles - Google Patents

Abstract

(57) [Summary] A drive device for a single-rail carrier according to the present invention provides a drive device suitable for carrying heavy objects used for civil engineering work on an inclined ground. There is a need for a rail member that solves the problem of strength in the conventional roller pin and rack drive system, and that is as lightweight as possible and has a short-term strength. In view of the above, an object of the present invention is to provide a rail rack structure which is lightweight and has sufficient strength even when carrying heavy loads in a drive system of a single-rail carrier. A driving wheel 3 has a meshing pitch circumference.
A plurality of freely rotatable roller pins 4 are provided, and the rack-shaped tooth profile 12 of the rail 1 meshing with the roller pins has a root shape substantially equal to the radius R of the roller pins. The outer circumference 14 of the drive wheel 3 is in contact with the rack mounting surface 15 of the rail 1, and both ends of the outer circumference of the drive wheel are formed with the flange 5 guided by the side surface of the rail. Drive device for single rail vehicles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a single-rail carrier, which provides a drive device suitable for carrying heavy objects used for civil engineering work on an inclined ground.

[0002]

2. Description of the Related Art The structure of a drive unit in a single-rail carrier is as follows.
The drive wheel is composed of a rack welded to the rail using a pinion with an involute curve tooth shape, and the roller pin method is a drive wheel with multiple roller pins provided on the meshing pitch circumference, and the rail is long Generally, a plate material was corrugated and formed into a rack shape, or the above-described rack was welded.

A roller pin system in which a rack or a corrugated rack formed on the lower surface of a rail is welded has been widely used as a driving system for a single rail vehicle because the rail structure can be constructed at a low cost. Hereinafter, a rack or a rack formed by corrugating is referred to as a rack.

[0004] In recent years, heavy goods are often transported in civil engineering works by single-rail transportation vehicles, and the conventional roller pin and rack drive system has a problem in strength. In the meshing between the roller pin and the rack, the tooth surface of the roller pin and the rack is in line contact, so the surface pressure is large, the initial wear of the rack tooth surface is large, and the bending stress applied to the tooth bottom of the rack is large. This is because deformation occurs.

[0000]

In order to solve these problems in the strength of the conventional roller pin and rack driving method, it is conceivable to increase the tooth width of the rack or enlarge the module. Rails of rail transport vehicles are often installed by manual labor to install on steep slopes, and the installed rails are used only during the construction period and are removed for a short time after the completion of construction Many. For this reason, the rail member of the rail is required to be as light as possible and have sufficient strength for a short period of time. However, increasing the tooth width of the rack or increasing the size of the module in order to increase the strength of the drive unit leads to an increase in weight, which causes a problem that the number of installation steps is significantly increased.

Accordingly, an object of the present invention is to provide a rail rack structure which is lightweight and has sufficient strength even when carrying heavy loads in a drive system of a single rail vehicle.

[0000]

According to the present invention, there is provided a driving apparatus for a single rail vehicle, wherein a plurality of freely rotatable roller pins are provided on a driving wheel on a meshing pitch circumference, and a rack of rails meshing with the roller pins is provided. The tooth profile has a root shape substantially equal to the radius R of the roller pin, and a portion of the tooth surface and a portion of the tooth bottom are in contact with the outer periphery of the roller pin at the time of meshing, and the outer periphery of the drive wheel is a rack mounting surface of the rail. In contact with
A driving device for a single-rail carrier, wherein a brim portion guided by a side surface of a rail is formed at both ends of an outer periphery of a driving wheel.

The invention according to claim 2 relates to a process for forming a rack tooth profile of a rail according to claim 1, which is formed by using a stamped steel as a rail material. A rack is formed in the rail by forming a protrusion in the direction and processing the protrusion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical idea of the drive device for a single-rail carrier according to the present invention is realized by the following configuration in the embodiment.

The meshing pitch of the driving wheels The rack-shaped tooth profile of the rail, which is provided on the circumference of the plurality of freely rotatable roller pins, has a root shape substantially equal to the radius R of the roller pin. The part and a part of the tooth bottom are configured to be in contact with the outer periphery of the roller pin.

The outer periphery of the driving wheel is in contact with the rack mounting surface of the rail, and a brim portion guided by the side surface of the rail is formed at both ends of the outer periphery of the driving wheel.

As shown in FIG. 5, a working method using stamped steel as a rail material is to extrude and form a rail material having a protruding portion in the longitudinal direction of one surface of a rail, and then melt or press-cut the rack portion or press-cut the rack material. By performing the cutting process, a tooth shape required for the protruding portion in terms of strength is formed. Pressed steel increases the thickness of the rail top surface,
Necessary places such as both sides of the rail lower surface can be made necessary thickness. Since the rails of the embodiment are formed by processing the racks on the protruding portions provided in the longitudinal direction of the stamped steel, there is an advantage that distortion, warping, and deterioration due to heat do not occur due to welding.

[0113]

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrate an embodiment of a drive device for a single-rail carrier according to the present invention. 1 is a side view of a drive device for a single-rail carrier according to the present invention, FIG. 2 is a front view of the same, FIG. 3 is a front view of a rail, FIG. 4 is a side view of a rail, and FIG. Perspective view showing a pressed steel material for the rail,
FIG. 6 is a side view of a driving device of a conventional single-rail carrier, and FIG.
Shows front views of the same. Embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment A power vehicle is powered by a belt from a prime mover. A stop brake, a centrifugal brake, an emergency stop device, and the like are provided on an intermediate shaft, and two final shafts have drive wheels that mesh with rail racks. It comprises a speed reducer 8. The drive wheel 3 is provided with a plurality of freely rotatable roller pins 4 on a meshing pitch circumference, and is provided with a brim portion 5 guided to the left and right of the drive wheel via a rail.

On the upper surface of the rail, the support 9
A plurality of upper rolling rollers 6 supported by the outer circumference 14 of the driving wheel 3 and the outer circumference 16 of the rolling roller 6.
The rail 1 is gripped. The rail 5 is configured to run while restricting the lateral play of the rail by the flange 5 of the drive wheel 3 and the flange 7 of the upper rolling roller 6.

The power vehicle transmits the power from the prime mover to the driving wheels 3 and obtains a thrust by engaging the roller pins 4 and the rack 2 to pull the bogie. The roller pin 4 rotates when meshing with the tooth surface of the rack 2 and transmits power to the rack while reducing the meshing resistance. The roller pins 4 are in contact with the tooth surface and a part of the tooth bottom surface of the rack 2 to transmit power.
Further, since the outer periphery 14 of the drive wheel 3 rolls in contact with the lower surface 15 of the rail, the outer periphery 14 has a function of traveling while maintaining appropriate dimensions so that the roller pin 4 is not pressed against the tooth bottom surface more than necessary. . This prevents an increase in running resistance due to the roller pin 4 being pressed more than necessary.

The contact area between the roller pins 4 and the rack 2 is greatly increased as compared with the conventional one, and the initial wear of the rack is reduced. Also, since the distance from the rack contact point of the roller pin to the rack bottom is smaller than that of the conventional rack rail, the bending moment applied to the rack bottom is significantly reduced, and the bottom of the rack which is a disadvantage of the conventional rack rail is reduced. Cracks are gone.

In this embodiment, since the two-wheel drive is used, a certain clearance is provided at the tooth bottom of the rack with respect to the roller pins. This is because the rail is bent left and right and up and down when the rail is installed, so as to cope with a change in the rack pitch that occurs at that time, and to absorb a deviation due to a processing assembly error of the two-wheel drive unit.

The present invention is characterized in that a stamping steel having a projecting portion 11 forming a rack-like tooth shape in the longitudinal direction of the stamping steel 10 is used to machine a rack-like tooth profile 12 of a rail meshing with a roller pin. The root shape of this rack tooth profile is made substantially equal to the radius R of the roller pin 4 so that a part of the tooth surface and a part of the tooth bottom contact the outer periphery of the roller pin at the time of meshing. Compared with the conventional rack tooth profile 13, the root shape of the rack tooth profile has a larger area where a part of the tooth surface and a part of the tooth root contact the outer periphery of the roller pin at the time of meshing, and therefore, the bending applied to the rack tooth root. Moment becomes small, and the crack of the tooth bottom, which is a drawback of the conventional rack rail, can be eliminated to increase the strength of the rail.

[0092]

The effects of the present invention are described in claims 1 and 2.
The following effects are achieved by the configurations described in the above items.

The power vehicle transmits the power from the prime mover to the driving wheels, and obtains a thrust by engaging the roller pins and the rack to pull the bogie. The roller pin has a large contact area when meshing with the tooth surface of the rack, and can rotate to reduce the meshing resistance and transmit power to the rack.

The outer periphery of the driving wheel travels while keeping the roller pin in an appropriate size so that the roller pin is not pressed against the tooth bottom surface more than necessary, while the roller pin comes into contact with the tooth surface of the rack and a part of the tooth bottom surface to transmit power and drive. It has the function to do. This can prevent an increase in running resistance due to the roller pin being pressed more than necessary.

The contact area between the roller pins and the rack is greatly increased as compared with the conventional one, and the initial wear of the rack can be reduced.

In the present invention, since the distance from the rack contact point of the roller pin to the bottom of the rack becomes smaller, the bending moment applied to the bottom of the rack becomes much smaller than that of the conventional one, which is a drawback of the conventional rack rail. Cracking of the tooth bottom can be prevented.

By using a stamping steel having a protruding portion forming a rack-like tooth profile in the longitudinal direction of the stamping steel, the rack-like tooth shape of the rail meshing with the roller pin is processed, so that it has the strength necessary for carrying heavy objects. The weight of the rack rail can be reduced while maintaining the shape of the rack.

[Brief description of the drawings]

FIG. 1 is a side view of a drive device for a single-rail carrier according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a front view of a rail.

FIG. 4 is a side view of a rail.

FIG. 5 is a perspective view showing a stamped steel as a material of the rail.

FIG. 6 is a side view of a driving device of a conventional single-rail carrier.

FIG. 7 is a front view of the same.

[Explanation of symbols]

 1. . . Rail 2. . . Rack 3. . . Drive wheel 4. . . Roller pin 5. . . Collar 6. . . Rolling roller 7. . . 7. Collar part . . Reduction gear 9. . . Rolling roller support 10. . . Pressed steel material 11. . . Projection 12. . . 12. Tooth profile of rack of the present invention . . 13. Conventional rack tooth profile . . Outer circumference of drive wheel 15. . . Rail bottom surface 16. . . Outer circumference of rolling roller

Claims (2)

[Claims] A drive wheel is provided with a plurality of freely rotatable roller pins on a meshing pitch circumference, and a rack-shaped tooth profile of a rail meshing with the roller pin has a root shape equal to a radius R of the roller pin, so that teeth are formed at the time of meshing. A part of the surface and a part of the tooth bottom are configured to be in contact with the outer periphery of the roller pin. The outer periphery of the drive wheel is in contact with the rack mounting surface of the rail. A driving device for a single-rail carrier, comprising: 2. A rack-shaped tooth profile of a rail meshing with a roller pin is formed on a protruding portion provided in a longitudinal direction of the stamped steel using a stamped steel as a rail material.
4. The driving device for a single-rail carrier described in 4. above.