JPH02162151A - Conveying device utilizing motor-driven running dolly - Google Patents

Abstract

PURPOSE:To obtain a conveying device conveying a large weight by covering the upper space between a pair of the right and left guide rails with a rail cover and arranging wheels of a motor-driven running dolly, a driving means and a current collector in the space covered by the rail cover. CONSTITUTION:A rail cover 5 covering the upper space between a pair of the right and left guide rails 2B and 2A is supported by a rail cover stanchion 7 erected on a support frame 6, and a rack gear 3 and a power feed rail 4 are fitted to the rail cover stanchion 7 in the space surrounded by the rail cover 5. Brackets 8 entering the space in the rail cover 5 are fitted at four corners on a motor-driven running dolly 1, a support wheel 9 rolled on the upper side face 2a of the guide rails 2A and 2B and a float preventing horizontal shaft wheel 10 in contact with the lower face side 2b are pivotally supported on each bracket 8, and a swing stop vertical shaft wheel 11 pinching both the right and left side faces 2d and 2c is fitted to the bracket 8 on the guide rail 2A side.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transport device using an electric traveling trolley, which is mainly used as a means of transporting cargo in factories, warehouses, etc.

(Prior art) Conventional conveyance devices using electric traveling carts, especially conveying devices equipped with rail covers that cover guide rails that guide the electric traveling carts, power supply rails, etc., are constructed on the floor along the conveyance route. A guide rail part is formed inside the left and right sides of the rail cover, which has a gate-shaped cross section, and the electric traveling vehicle is equipped with wheels that roll on this guide rail part, a driving means including an electric motor, a current collecting means, etc. Each of the means covered by the cover was configured to move within the space covered by the cover.

(Problems to be Solved by the Invention) In the conventional conveying device as described above, the entire weight of the electric traveling trolley and the load acting on the guide rail is received by the rail cover and the rail cover support at the center of the rail cover. Therefore, the rail cover and the rail cover support must have sufficient strength, and therefore the rail cover and the rail cover support become heavy objects, compared to a transport device not equipped with such a rail cover. A significant increase in costs cannot be avoided. In other words, it was unsuitable as a conveyance device for conveying heavy objects.

In addition, since the rail cover also serves as a support means for the guide rail, it is not possible to remove only the rail cover at an arbitrary position and perform maintenance on the guide rail, power supply rail, or electric vehicle at the location where the rail cover is removed. However, there were also problems such as the cross-sectional shape of the guide rail that supported the electric vehicle was limited.

(Means for solving the problems) In order to solve the above-mentioned conventional problems, the present invention has the following features:
A rail cover with a gate-shaped cross section that covers the upper space between the pair of left and right guide rails is installed at an intermediate position between the pair of left and right guide rails provided on the ground side and the electric traveling trolley that runs on the guide rails. The pair of left and right guide rails are separated from the rail cover and laid on the ground side, and are placed on the ground side between the guide rails. A wheel rolling on the guide rail, a driving means including a motor, a current collector, and a fixed-side power supply rail with which the current collector slides are arranged in a space covered by the rail cover, Furthermore, the electric traveling trolley includes:
A conveyance device using an electric traveling trolley is proposed, which is provided with a vertical axis wheel for steady rest that pinches at least one guide rail from the left and right sides, and a horizontal axis wheel for lifting prevention that comes into contact with the lower surface of both the left and right guide rails. It is.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In Figures 1 and 2, ■ is an electric traveling trolley, 2A,
2B is a pair of left and right guide rails laid on the floor via a support frame 6; 3 is a rack gear installed parallel to these guide rails between both guide rails 2A and 2B;
4 is a power supply rail for power and signals. Reference numeral 5 denotes a rail cover having a gate-shaped longitudinal section that covers the upper space between the pair of left and right guide rails 2A and 2B,
The rack gear 3 and the power supply rail 4 are attached to the rail cover support 7 in a space surrounded by the rail cover 5. There is.

Brackets 8 that enter the space inside the rail cover 5 from between the lower end of the rail cover 5 and the guide rails 2A and 2B are attached to the four corners of the electric traveling trolley l, and each bracket 8 is attached to the guide rails 2A and 2B. Rail 2A, 2B
and the guide rail 2A.

A lifting prevention horizontal shaft wheel IO that comes into contact with the lower surface 2b of 2B is pivotally supported. Also, guide rail 2
A vertical shaft wheel 11 for steady rest is attached to a pair of front and rear brackets 8 on the A side, which sandwich both left and right side surfaces 2c and 2d of the two guide rails. Reference numeral 12 denotes a driving means support bracket similar to the bracket 8, which is attached to an intermediate position on one side of the electric traveling vehicle 1, supports the motor 13, the reducer 14, and the current collector 15, and supports the motor 13, the reducer 14, and the current collector 15. A pinion gear 16 that meshes with the rack gear 3 is attached to the vertical output shaft of the motor.

The motor 13 is connected to the current collector 15 from the power supply rail 4.
It is driven by power and control signals supplied through.

Reference numeral 17 denotes a fixed connector protruding from one end in the running direction of the electric traveling truck l, and 18 a movable connector protruding from the other end of the electric traveling truck l in the traveling direction. The fixed connector 17 is provided with a sawtooth-shaped engagement pawl 17a that protrudes upward, and the movable connector 18 is movable upward against gravity around a support shaft 18b. It is provided with sawtooth-shaped engagement claws 18a that are oriented in reverse directions and directed downward, and is provided with a cam driven roller 18c that projects laterally at its tip. Reference numerals 19 and 20 designate bumpers for maintaining the distance between the front and rear electric traveling carts 1, which are provided to sandwich the fixed connector 17 and the movable connector 18 from both left and right sides.

The electric traveling trolley l configured as described above has a motor 1
3 and rotates the pinion gear 16 in the forward or reverse direction, it is possible to travel forward or backward. At this time, the lifting prevention horizontal shaft wheel 10 is attached to the lower surface 2b of the guide rails 2A, 2B. The vertical axis wheel 11 for steady rest prevents the electric traveling trolley 1 from floating up from the guide rails 2A and 2B.
By sandwiching both left and right side surfaces 2C12d of one guide rail 2A, the electric traveling trolley 1 can be run along the guide rails 2A and 2B without wobbling in the left and right lateral directions. Further, the supporting wheels 9, motor 13, speed reducer 14, current collector 15, etc. on the electric traveling trolley l side move within the rail cover 5. Furthermore, the pair of left and right idle rails 2A, 2B, rack gear 3, power supply rail 4, etc. on the ground side are also covered by the rail cover 5, regardless of the presence or absence of the electric traveling trolley l. Not only can they be run individually, but also a plurality of electric traveling trolleys 1 can be connected and run as one using the fixed connector 17 and the movable connector 18.

In the above embodiment, the guide rails 2A and 2B are formed of an H-shaped steel 21 that forms the upper surface 2a of the guide rail, and a pair of left and right cross-sectional auxiliaries that form the lower surface 2b of the guide rail and both left and right sides 2c and 2d of the guide rail. The guide rails 2A and 2B are composed of an upper surface 2a on which the supporting wheel 9 rolls, a lower surface 2b on which the lifting prevention horizontal shaft wheel IO comes into contact, and a vertical shaft for steady rest. The cross-sectional structure is not limited to that of the above embodiment, as long as it has both left and right side surfaces 2c and 2d that the wheel 11 comes into contact with.

(Operations and Effects of the Invention) According to the conveyance device of the present invention as in the above embodiment, when using the ground side guide rail, power supply rail, rack gear, etc., the rail cover not only protects the rack gear, etc. It also protects the drive means including the motor on the electric traveling trolley side, the current collector, and the wheels rolling on the guide rail. Therefore, it is possible to not only prevent foreign objects from getting caught, oil, water, etc. to enter, and conversely, prevent dust generated inside the cart from scattering to the outside, but also prevent workers who work close to the conveyance route from using the wheels. It also prevents the machine from getting caught in gears, gears, etc., greatly improving safety.

Moreover, since the guide rails that support the electric traveling trolley are laid on the ground side separately from the rail cover,
It is possible to use any cross-sectional shape, and
Strength and rigidity can also be easily increased as needed.

On the other hand, since the weight and load of the electric traveling trolley do not act on the rail cover, the rail cover can be constructed from a thin plate, and the rail cover support only needs to be strong enough to support the rail cover. Costs related to rail covers can be significantly reduced compared to conventional ones.

Furthermore, it is also possible to remove only the rail cover, regardless of the guide rail that supports the electric traveling bogie, and maintenance of the guide rail and electric traveling bogie can be easily performed at the location where the rail cover is removed, as well as allowing electric traveling to be performed at the location where the rail cover is removed. Line-off of the trolley can also be made possible.

Further, in the present invention, the electric traveling trolley is provided with a vertical shaft wheel for steady rest that sandwiches at least one of the guide rails from both the left and right sides, and a horizontal shaft wheel for preventing lifting that comes into contact with the lower surface of the guide rail between the left and right sides. Therefore, even if the electric traveling vehicle is made smaller by sufficiently reducing the gap between the rail cover and the electric traveling vehicle, the electric traveling vehicle may come into contact with the rail cover due to vibration or wobbling while traveling. There is no need to worry about this happening, and you can drive safely.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view, and FIG. 2 is a partially cutaway side view. 1... Electric traveling trolley, 2A, 2B... Guide rail, 2a... Upper side of the guide rail, 2b... Lower side of the guide rail, 2c, 2d... Both left and right sides of the guide rail, 3...・Rack gear, 4... Power supply rail, 5...
Rail cover, 7...Rail cover support column, end...Bracket, 9...Support wheel, 1o...Horizontal axis wheel for lifting prevention, 11...Vertical axis wheel for steady rest, 13... Motor, 14...Reducer, 15.
...Current collector, 16...Pinion gear.

Claims (1)

[Claims] A rail cover with a gate-shaped cross section that covers the upper space between the pair of left and right guide rails is installed at an intermediate position between the pair of left and right guide rails provided on the ground side and the electric traveling trolley that runs on the guide rails. The pair of left and right guide rails are separated from the rail cover and laid on the ground side, and are placed on the ground side between the guide rails. A wheel rolling on the guide rail, a driving means including a motor, a current collector, and a fixed-side power supply rail with which the current collector slides are arranged in a space covered by the rail cover, Furthermore, the electric traveling trolley is provided with a vertical shaft wheel for steady rest that sandwiches at least one of the guide rails from both the left and right sides, and a horizontal shaft wheel for preventing floating that comes into contact with the lower surface of both the left and right guide rails. Conveyance equipment used.