JPH0848486A - Monorail type carrier - Google Patents

Abstract

(57) [Abstract] [Purpose] To expand the effective space below the device by making the device compact, and to effectively use the work space and ensure safety. [Structure] An elevated rail 1, a traveling carriage 3 equipped with drive wheels 7 for rolling the rail 1, a handling mechanism 4 for transferring a load connected to the traveling carriage 3, and a handling mechanism 4 A hoisting mechanism 21 that supports vertically
A monorail type transport device was configured with A and 21B. In this configuration, the rail 1 is replaced with the rail-constituting wall 1a.
And rail portions 1b and 1c projecting from the upper and lower ends thereof so that the drive wheel 7 rolls on the lower rail portion 1c, and the hoisting mechanisms 21A and 21B are mounted on the traveling carriage 3. The frame 5 is integrally incorporated into the frame 5 and the winding mechanisms 21A and 21B are arranged directly below the rail 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monorail type transfer device having a handling mechanism for loading and unloading a load which can be raised and lowered.

[0002]

2. Description of the Related Art Conventionally, there has been known a monorail type conveying device which travels along an elevated monorail (hereinafter abbreviated as a rail) and conveys a package by a mounted handling mechanism. In such a monorail type conveying device, a traveling carriage is suspended and supported by a rail by a plurality of supporting rollers, and travels along the rail by the rotational driving force of drive wheels provided in the traveling carriage.
Then, at the station for loading and unloading luggage, the handling mechanism is held at a predetermined lowered position to load and unload the luggage, and after the loading and unloading of the luggage is completed, the handling mechanism is The luggage is transported by the traveling carriage traveling while being held at a predetermined raised position.

In the monorail type carrier as described above,
Generally, the rail is formed in an I-shaped cross-section, and the drive wheels of the traveling carriage come into contact with the upper surface of the rail, and the supporting rollers come into contact with the side surface and the lower surface of the rail, so that the traveling carriage holds the rail. With these rollers, the driving mechanism for traveling, the control unit, etc. are equipped on the traveling carriage main body, and the handling mechanism and the hoisting mechanism for raising and lowering this are connected under the traveling carriage main body. It is supposed to be done.

[0004]

The above-mentioned monorail type carrier is widely used in various industrial fields as a means for carrying luggage indoors, but when it is applied, it is necessary to ensure safety. In many cases, it is obligatory to secure a predetermined space below the monorail type transport device, such as an electric or electronic parts assembly factory.
In the field where the ceiling is low and space restrictions are imposed,
It is required to make the monorail type transfer device compact in the vertical direction.

However, in the conventional device as described above, since the handling mechanism and the hoisting mechanism for raising and lowering the handling mechanism are arranged below the trolley body, the size of the entire device in the vertical direction is relatively large and the above-mentioned requirement is met. I wasn't fully satisfied. As a result, there are situations in which the monorail carrier cannot be applied.

Therefore, in the field of manufacturing monorail conveyors, it is necessary to meet the above requirements by making the apparatus compact.

The present invention has been made in order to solve the above problems, and it is intended to expand the effective space below the device by downsizing the device in the vertical direction, and to effectively use the work space and ensure safety. It is an object of the present invention to provide a monorail type transportation device that can perform the above.

[0008]

The invention according to claim 1 is
An elevated monorail, a traveling carriage equipped with drive wheels rolling on the monorail, a load transfer handling mechanism connected to the traveling carriage, and an elevating device that supports the handling mechanism so that the handling mechanism can be moved up and down. In the monorail type conveying device provided, the monorail is provided with a rail portion protruding laterally at a lower end portion of the rail-constituting wall, and the drive wheels are installed on the rail portion,
The elevating device is integrally incorporated in the main body of the traveling carriage and is arranged immediately below the rail portion of the monorail.

According to a second aspect of the present invention, in the monorail type conveying device according to the first aspect, the handling mechanism is suspended by an elevating device including a hoisting mechanism, and the drive wheel and the hoisting mechanism include transmission means and clutch means. The center of the output shaft of the motor and the center of the drum shaft of the winding mechanism are arranged on substantially the same horizontal plane.

[0010]

According to the first aspect of the present invention, since the drive wheels are arranged laterally of the monorail, the number of portions of the traveling carriage protruding above the monorail is reduced. Further, since the lifting device is integrally incorporated in the traveling carriage and is arranged immediately below the monorail, the space occupied by the traveling carriage and the lifting device below the monorail is reduced.

According to the second aspect of the invention, the traveling carriage has a compact structure due to the common drive source for the drive wheels and the hoisting mechanism, and the drum of the hoisting mechanism is arranged horizontally with respect to the motor. As a result, the vertical expansion of the traveling carriage is suppressed.

[0012]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 schematically shows the whole of the monorail type carrier, and FIGS. 2 and 3 show a concrete structure of a traveling carriage in the monorail type carrier.

As shown in these figures, the monorail transfer device comprises a rail 1 and a traveling carriage 3 that travels along the rail 1.

The rail 1 is a horizontal rail portion 1 projecting to both sides at the upper and lower ends of a vertically extending rail-constituting wall 1a.
It is formed in an I-shaped cross section having b and 1c, and is suspended and supported by a support arm 2 on the ceiling of a factory assembly line. A trolley wire 1d for supplying driving power is attached to the rail-constituting wall 1a, and a current collector provided on the traveling carriage 3 slides on the trolley wire 1d,
Driving power is supplied to the traveling vehicle 3.

The traveling carriage 3 is adapted to travel along the rail 1 by automatic control or remote control. Although not shown in detail, a handling mechanism 4 for loading and unloading a load is suspended and supported at the lower part, and the handling mechanism 4 is lifted and lowered by hoisting mechanisms 21A and 21B, which will be described later. Work is to be done.

The traveling carriage 3 is equipped with a motor 6 which serves both as a drive source for traveling and a drive source for raising and lowering the handling mechanism, and drive wheels 7 which are driven by the motor 6 to roll the rail 1. Is provided. The drive wheel 7 is inserted between the rail portions 1b and 1c on the side (right side in FIG. 2) different from the side on which the trolley wire 1d is disposed across the rail-constituting wall 1a of the rail 1, and the lower rail portion is provided. It is designed to roll over 1c. In addition, the traveling carriage 3 has
A plurality of support rollers 8 and 9 are provided, and these support rollers 8 and 9 come into contact with the rail 1 from below and on both sides. That is, the traveling carriage 3 has the support rollers 8,
While being supported by the rail 1 by means of 9, the vehicle is driven by the rotational driving force of the drive wheels 7. further,
The traveling vehicle 3 is provided with a control unit 10 that controls a drive system.

In the traveling carriage 3, the drive wheels 7 are provided.
Has a drive shaft 11 projecting laterally (right side in FIG. 2) of the rail 1, and the drive shaft 11 is rotatably supported by the frame 5 of the traveling carriage 3 and
A timing pulley 12 and a traveling brake 13 composed of an electromagnetic brake are arranged on the drive shaft 11.

On the other hand, the motor 6 is attached to the frame 5 below the drive shaft 11. The output shaft 14 projects from the motor 6, and the output shaft 14
A timing pulley 15 is rotatably supported on the upper side, and a timing belt 16 is mounted between the timing pulley 15 and the timing pulley 12 of the drive shaft 11. Further, on the output shaft 14, on the side of the timing pulley 15 (on the right side in FIG. 2), a traveling clutch 17 which is an electromagnetic clutch, a lifting clutch 18 which is also an electromagnetic clutch, and a lifting brake which is an electromagnetic brake. 19 is disposed, and a timing pulley 20 for transmitting power to hoisting mechanisms 21A and 21B described later is rotatably supported between the lifting clutch 18 and the lifting brake 19.

In the traveling carriage 3, the power of the motor 6 is supplied to the timing pulley 15 while the traveling clutch 17 is on and the traveling brake 13 is off.
With the timing belt 16, the timing pulley 12 and the drive shaft 11 transmitted to the drive wheels 7, the lifting clutch 18 is ON, and the lifting brake 19 is OFF,
The power of the motor 6 is transmitted to the timing pulley 20.

In the traveling carriage 3, a pair of hoisting mechanisms 21A and 21B driven by the power transmitted from the motor 6 are provided on both front and rear sides (left and right sides in FIG. 3) of the motor 6. .

Each of the hoisting mechanisms 21A and 21B has a pair of drums 22 arranged on the outer sides of the right and left sides (upper and lower sides in FIG. 3) of the frame 5, and the drums 22.
And a pair of left and right guide rollers 24 corresponding to the drums 22, respectively.
In a state where the belt 23 led out from the above extends downward through the guide roller 24 (see FIG. 1), the tip portion thereof is connected to the frame of the handling mechanism 4.

The drums 22 and the guide rollers 24 of the hoisting mechanisms 21A and 21B are mounted on the left and right ends of the drive shaft 25 and the support shaft 26 rotatably supported by the frame 5, respectively. The drum 22
The guide roller 24 and the guide roller 24 rotate together. At this time, the centers of the drive shaft 25 and the support shaft 26 are
The hoisting mechanism 21A, 21 is arranged in the traveling carriage 3 so as to be positioned substantially on the same horizontal plane as the center of the output shaft 14 of the motor 6.
The B drum 22, the guide roller 24, and the motor 6 are arranged side by side in the front-rear direction.

A timing pulley 28 for transmitting power to the drum 22 is attached to one end portion of each drive shaft 25, and in the vicinity of the tip of the output shaft of the motor 6, on both front and rear sides thereof, A tension pulley 27 rotatably supported on the frame 5 is provided. Then, as shown in FIG. 4, each timing pulley 28 of the drive shaft 25, the tension pulley 27,
A timing belt 29 is attached across the timing pulley 20 attached to the output shaft 14 of the motor 6. That is, the rotation of the timing pulley 20 causes the timing belt 29 to rotate and the winding mechanisms 21A and 21B.
To be transmitted to.

According to the monorail type transport device described above, when the traveling carriage 3 travels along the rail 1, the traveling clutch 17 is turned on and the traveling brake 13 is used.
When the motor 6 is turned off, the power is transmitted to the drive wheels 7. In this case, the lifting clutch 18 is turned off and the lifting brake 19
Is turned on, the handling mechanism 4 is held at a constant height position (for example, a raised position).

On the other hand, when the traveling carriage 3 reaches the predetermined position where the loading and unloading work of the luggage should be performed, the traveling clutch 17 is OF.
F, the traveling of the traveling carriage 3 is stopped by turning on the lifting brake 19, and the lifting clutch 18 is switched on and the lifting brake 19 is switched off, whereby the power of the motor 6 is increased by each hoisting mechanism 21A. , 21B
Then, the handling mechanism 4 is moved up and down.

By the way, in the monorail carrier of the above-mentioned embodiment, by adopting the above-mentioned structure, the overall vertical dimension becomes more compact than the conventional monorail carrier of this kind. ing. That is, as shown in FIGS. 1 and 2, in the monorail type carrier of the above-described embodiment, the rail 1 having the structure in which the rail portions 1b and 1c protruding laterally are provided at the upper and lower ends of the rail-constituting wall 1a. Since the drive wheels 7 of the traveling carriage 3 are projected between the rail portions 1b and 1c, there is no portion of the traveling carriage 3 projecting above the rail 1, and the hoisting mechanisms 21A and 21B are also provided. Is disposed immediately below the rail 1 because it is integrally incorporated in the frame 5 of the traveling carriage 3, so that the space occupied by the traveling carriage 3 and the hoisting mechanisms 21A and 21B is reduced below the rail.

Therefore, as compared with the conventional device in which the traveling carriage is configured to hold the rail and the hoisting mechanism and the handling mechanism are connected to the lower portion of the traveling carriage, the traveling carriage 3 and the hoisting mechanisms 21A and 21B are compared. The vertical dimension of the combined portion is effectively suppressed.

Therefore, according to the monorail type transporting apparatus of the above-mentioned embodiment, the handling mechanism 4 can be supported at a higher position by the amount of the vertical dimension thus suppressed, whereby the space below the monorail type transporting apparatus can be provided. It becomes possible to secure more. Therefore, the working space of a factory or the like can be utilized more effectively than the conventional device. Further, it is possible to preferably avoid the inconvenience that the monorail transfer device cannot be installed because the required space cannot be secured because the ceiling portion is relatively low.

In particular, in the monorail type transporting apparatus of the above-mentioned embodiment, since there is no portion projecting above the rail 1 in the traveling carriage 3, it is possible to mount the rail 1 closer to the ceiling. More space under the monorail carrier can be secured.

The above-mentioned monorail type conveying device is an embodiment of the monorail type conveying device according to the present invention, and its specific configuration can be appropriately changed without departing from the gist of the present invention. For example, in the traveling carriage 3, the timing belts 16 and 29 perform power transmission from the output shaft 14 to the drive wheels 7 and power transmission from the output shaft 14 to the hoisting mechanisms 21A and 21B. In addition to the means, transmission means such as chains and gears may be applied. However, as compared to the structure using the chain or the gear in the structure applying the timing belt as in the above-described embodiment, the sound deadening effect can be expected, which is convenient in the working environment of the factory and the like, and the application work of grease etc. Since it is unnecessary, it has the advantage of good maintainability.

Further, in the above-mentioned monorail type conveying device, the trolley wire 1d and the drive wheels 7 of the traveling carriage 3 are arranged on different sides with the rail-constituting wall 1a of the rail 1 separated. The trolley wire 1d and the drive wheel 7 may be arranged on the same side. However, dust (carbon powder) may be generated due to the sliding contact between the trolley wire 1d and the current collector, and the dust may adhere to the drive wheels 7 to cause slips and the like. Except
As for the positional relationship between the trolley wire 1d and the driving wheels 7, it is desirable to adopt the positional relationship of the above-mentioned embodiment.

[0033]

As described above, according to the present invention,
Due to the relationship between the rail and the traveling carriage, the drive wheels of the traveling carriage are arranged on the side of the monorail, so that there are no or few portions of the traveling carriage that project above the monorail. Further, since the lifting device is integrally incorporated in the traveling vehicle and is arranged immediately below the monorail, the space occupied by the traveling vehicle and the lifting device below the monorail is reduced. Therefore, the vertical size of the traveling carriage and the lifting device can be effectively suppressed, and therefore the handling mechanism can be supported at a higher position. As a result, it is possible to secure more space below the monorail type transport device, which makes it possible to use the work space of the factory more effectively and to secure the predetermined space required from the viewpoint of safety. It becomes possible to do.

Further, in such a structure, the handling mechanism is suspended by the hoisting mechanism, the drive wheels of the traveling vehicle and the hoisting mechanism are connected to the same motor through the transmission means and the clutch means, and the output of the motor is further connected. By disposing the shaft center and the drum shaft center of the hoisting mechanism on substantially the same horizontal plane, a common structure of the drive wheel and the drive source for the hoisting mechanism makes the traveling carriage compact and the drum of the hoisting mechanism. Is arranged in the horizontal direction with respect to the motor, which suppresses the vertical extension of the traveling carriage.

[Brief description of drawings]

FIG. 1 is a schematic side view showing the entirety of an embodiment of a monorail type transport device according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG. 1 in the monorail type transfer device according to the present invention.

FIG. 3 is a plan sectional view showing a traveling carriage of the monorail type transport device according to the present invention.

FIG. 4A of FIG. 3 showing a transmission mechanism for a winding mechanism
It is an arrow schematic diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rail 1a rail configuration wall 1b, 1c rail part 2 support arm 3 traveling trolley 4 handling mechanism 5 frame 6 motor 7 drive wheels 8 and 9 support roller 11 drive shaft 12, 15, 20, 28 timing pulley 13 traveling brake 14 output shaft 16, 29 Timing belt 17 Running clutch 18 Lifting clutch 19 Lifting brake 21A, 21B Winding mechanism 22 Drum 23 Belt 24 Guide roller 25 Drive shaft 26 Support shaft 27 Tension pulley

Claims (2)

[Claims] 1. A traveling carriage equipped with an elevated monorail, drive wheels rolling on the monorail, a handling mechanism for transferring a load, which is connected to the traveling carriage, and a lifting mechanism for supporting the handling mechanism. In the monorail type transfer device including the lifting device, a rail portion protruding laterally is provided at a lower end portion of a rail constituting wall of the monorail, and the drive wheel is installed on the rail portion. A monorail type transfer device, wherein the lifting device is integrally incorporated in a main body of the traveling carriage and is arranged directly below a rail portion of the monorail. 2. The handling mechanism is suspended by an elevating device including a hoisting mechanism, and the drive wheel and the hoisting mechanism are connected to the same motor via a transmission means and a clutch means. 2. The monorail type transfer device according to claim 1, wherein the center of the output shaft and the center of the drum shaft of the winding mechanism are arranged on substantially the same horizontal plane.