JPH04123970A - Conveying electric car - Google Patents

Abstract

PURPOSE:To dispense with any reduction gear by fitting a direct drive motor externally in a horizontal drive shaft equipped with a driving shaft in the inner end, and having this driving shaft linked up with the shaft so as to make it drivable at low speed and high torque through the motor. CONSTITUTION:In this conveying electric car, a driving wheel 8, being loosely fitted in a section C-shaped guide rail 1 and getting on a supporting horizontal rail part 2, is pivotally supported on the central part of its car frame 7. In this case, the driving shaft 8 is attached to the inner end of a horizontal drive shaft 14 piercing through the center of a direct drive motor 13 and being supported of itsinner end neighboring part by the car frame 4 via a bearing 14a. This driving shaft 14 is tightly attached to an outer side of an outer rotor 16 of the motor 13 via a turning plate 15 fitted in the spline shaft part 14b, and an inner end of a tubular inner stator 17 of the motor 13 is tightly attached to the car frame 7. Then, a solenoid brake 19 is interposed between a cover 18 and an outer end of the horizontal drive shaft 14 jutting out of this cover 18.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a drive wheel that rides on a support rail portion of a guide rail, and a steady rest that engages with a right and left lateral steady rest rail portion of the guide rule. The present invention relates to a conveyance train equipped with vertical axis rollers.

(Prior art and its problems) Conventional transport trains of this type are, for example, disclosed in Japanese Patent Application Laid-open No. 61-2.
As described in Japanese Patent No. 41257, a motor with a reducer in which a motor and a reducer are integrally coupled so that the reducer output shaft projects laterally at right angles to the motor shaft center is connected to the reducer output shaft. It was attached to the train machine frame via a reducer so as to project horizontally toward the guide rail, and the drive 11 (wheels were fixed to the reducer output shaft).

In such conventional transport trains, the heavy motor is located longitudinally away from the drive wheels, so only the drive wheels are placed at the lower center of the train supported by guide rails. When using the object support device as a transportation device that suspends and transports the object, it may be used in an empty vehicle state with no object suspended, or in an actual vehicle state with the object suspended. Even if the object to be transported is a light object, the motor will rotate downwards around the drive wheels of the train.

In other words, since the train is not balanced in the longitudinal direction at all with a single drive wheel, the auxiliary wheels to prevent the train from overturning as described above are supported at a position away from the drive wheels toward the motor. , it had to be a large, two-axle type train with a long longitudinal length.

Of course, a motor with a reduction gear is also known in which a motor and a reduction gear are concentrically connected and integrated, so if such a motor with a reduction gear is configured to drive the drive wheels, the reduction The center of gravity of the motor and the center of gravity of the drive wheels will almost never deviate backwards from the center of gravity of the drive wheels, or when viewed from the front, the motor with the reducer will protrude significantly laterally, causing the left and right side of the train to deviate. The width becomes extremely large, which not only impairs the lateral balance of the train, but also requires a large space lJ left and right to be secured for the train running route.

(Means for Solving the Problems) In order to solve the conventional problems as described in ``2'', the present invention provides a drive wheel that rides on a supporting rail portion of a guide rail and a lateral vibration of the guide rail. In a transport train equipped with a steady rest vertical shaft roller that engages with a stop rail, a direct drive motor is fitted onto the horizontal drive shaft with the drive wheels attached to the inner end, and the motor is The present invention proposes a transport train in which the rotor and the horizontal drive shaft are connected, and the stator of the motor is connected to the train machine frame.

(Example) An example of the present invention will be described below with reference to an illustrative diagram.

In FIGS. 1 and 2, ■ is a guide rail with a C-shaped cross section installed on the ceiling side, and as shown in detail in FIG. , - are provided with a pair of lower vertical rail portions 3a, 3b for lateral steadying in the left and right directions, and a power supply rail 5 is laid inside the vertical wall portion 4. Reference numeral 6 denotes a transport train, and a drive wheel 8 that loosely fits into the guide rail 1 and rides on the supporting horizontal rail portion 2 is pivotally supported in the center of the train machine frame 7. Frame 7
A pair of left and right vertical shaft rollers 9 for steady rest sandwiching the lower vertical rail part 3a for steady rest on both the front and rear sides of the drive wheel 8 on the front and rear end projecting portions 7a and 7b of the drive wheel 8.
, 10, a pair of left and right vertical shaft rollers 11 for steady rest sandwiching the upper vertical rail part 3b for steady rest from both left and right sides are pivotally supported on one side of the front and rear of the drive wheel 8, and
A pair of front and rear current collecting units 12'A and 12B are attached.

As shown in FIGS. 3 and 4, the drive wheels 8 extend through the center of the direct drive motor (directly below, abbreviated as DD motor) 13, and extend near the inner end to the train frame 7.
The rotary disk 15 is attached to the inner end of a horizontal drive shaft 4 supported via a bearing 14a, and spline-fitted to a spline shaft portion 14b formed near the outer end of the horizontal drive shaft 14. The inner end of the cylindrical inner stator 17 of the DD momo--13 is fixed to the outer end of the outer rotor 16 of the DD momo--13, and the inner end of the cylindrical inner stator 17 of the DD momo--13 is fixed to the electric train machine frame 7. -1- A U-shaped cover 18 that covers both sides of the lower side and the outer end is attached to the train machine frame 7, and between the outer end of the horizontal drive shaft 14 protruding from this cover 18 and the cover 18. An electromagnetic brake 19 is interposed therein.

As shown in FIGS. 1 and 2, at the lower end 7C of the train machine frame 7 that projects below the guide rail l, there is a point located an equal distance away from the position directly below the drive wheel 8 in the front-rear direction. Backup horizontal axis rollers 20a, 201] which are close to the lower side of the lower supporting horizontal rail section 2 of the guide rail 1 are pivotally supported. In addition, a pair of left and right brackets I and 2 are attached to one end 7C of the train frame 7.
A conveyed object support device 22 is suspended via the suspension 1. This conveyed object support device 22 is a rotary body 2 for winding up and feeding out three hanging flat heel l-23a to 23c.
4a to 24c, a lifting drive means 26 including a motor 25 for rotating these rotating bodies 24a to 24C in forward and reverse directions;
and a bunker unit 27 suspended by the three suspension flat belts 23a to 23c so as to be movable up and down. Note that the y (lower drive means 26) is capable of swinging back and forth through a pair of left and right concentric support shafts 28.
It is hung at 21.

In FIGS. 2 to 4, 29 is attached to one end 7C of the train machine frame 7 on the opposite side of the drive wheel 8 and the DD momo 13 with the kite rail 1 in between. The control hook is mounted in such a way that the

The transport train 6 configured as described above has the power supply rail 5
The power is supplied to the DD motor 13 through the current collecting units l-12A, 12B and the control device in the control box 29, thereby rotating the outer rotor 16 of the DD motor 13. is transmitted to the drive wheels 8 via the rotary disk 15 and the horizontal drive shaft 14, and the drive wheels 8 are rotationally driven in any forward or reverse direction to cause the vehicle to travel forward or backward along the guide rail 1. I can do it. At this time, vertical shaft rollers 9 to 11 for steady rest
Vertical rail parts 3a and 3b for steady rest of guide rail 1
Since it is sandwiched from both left and right sides, the transport train 6 can run without swinging in the left and right directions. In addition, the back-up horizontal axis rollers 20a or 20b are used to prevent the transport train 6 from rotating back and forth around the drive wheels 8 when starting or stopping.
This is prevented by coming into contact with the lower surface of the supporting horizontal rail portion 2 of the guide rail 1. And when it stops, DD Momo-13
The transport train 6 can be stopped and fixed at a predetermined position by cutting off the power supply to the transport train 6 and activating the electromagnetic brake 19 to brake the horizontal drive shaft 14 and fixing the drive wheels 8.

By running the transport train 6 as described above, it is possible to transport the object (not shown) held by the hanger unit 27 of the object support device 22. 27 can be raised and lowered when loading and unloading objects to be transported. That is, power is supplied from the power supply rail 5 to the motor 25 of the lifting drive means 26 via the current collection units 12A and 12B and the control device in the control box 29, and the three windings are fed to the motor 25 of the two-way unwinding rotary body 2.
4a to 24c are rotated in conjunction with each other at the same speed in the unwinding direction or winding direction, and the three hanging bells 1□23
By letting out or winding up a to 23c,
The hanger unit 27 suspended by these hanging bells l-23a to 23c can be lowered or raised relative to the transport train 6.

The conveyed object support device 22 is suspended from the central lower end of the conveyance train 6 so as to be able to swing back and forth around the support shaft 28, so that the conveyance object support device 22 is suspended from the central lower end of the conveyance train 6 so as to be able to swing back and forth around the support shaft 28. Even when traveling in the area, it hangs vertically due to gravity. Therefore, when the transport train 6 travels on an upward slope or a downward slope, gravity acts diagonally downward on the central lower end of the transport train 6 that pivotally supports the transported object support device 22. Therefore, a pair of front and rear backup horizontal axis rollers 20a,
Among the rollers 20b, the roller 20a or 2 located on the lower side of the slope
01) The drive wheel 8 or the guide rail 1 is pressed against the lower surface of the support horizontal rail portion 2 of the kite rail 1, and the reaction force is used to
Therefore, the frictional force of the drive wheel 8 against the support horizontal rail section 2 of the guide rail 1 increases, and the drive wheel 8 is prevented from slipping. It turns out. As a result, the transport train 6 can run stably at a predetermined speed even on uphill or downhill sections.

Incidentally, the backup horizontal axis rollers 20a and 20b are not essential to the present invention, and can be omitted, for example, if there is no slope in the running route of the transport train 6.

(Operations and Effects of the Invention) As described below, in the conveyance train of the present invention, a DD momo (direct drive motor) is fitted onto a horizontal drive shaft with drive wheels attached to the inner end, The rotor of this motor is connected to the horizontal drive shaft, and the stator of the motor is connected to the electric motor 11f and the machine frame, so that the drive wheel is directly connected to the DD motor, which is concentrically connected to the heavy drive wheel.
- Since it is configured to be able to drive at low rotation speed and high torque, there is no need for a reduction gear to be interposed between the motor and the driving wheels as in the conventional case.

Therefore, as shown in the example, if the conveyed object support device is suspended directly below the drive wheels, the heavy motor must be located away from the drive wheels in the longitudinal direction. Unlike when using a motor with a speed reducer, there is no need to pivot the auxiliary wheels to prevent the train from overturning and stabilize its posture at a position away from the drive wheels toward the motor. It can be implemented as an extremely small and lightweight shaft-type transport train. Of course, when using a motor with a reducer in which the reducer and motor are directly connected in a concentric manner, the horizontal balance of the train becomes extremely unstable, and the vertical axis roller for steady rest or the roller concerned becomes unstable. The abrasion of the steady rest rail part of the kiterail that comes into contact with the train will not become noticeable, and the left and right sides of the train will not become very large. I can do it.

[Brief explanation of the drawings] Fig. 1 is a side view, Fig. 2 is a front view showing the guide rail in longitudinal section, Fig. 3 is a partial cross-sectional plan view showing only the transport mold 11, and Fig. 4 is a side view. It is a vertical cross-sectional front view showing a transportation train and a guide rail. 1...Kite rail, 2...-Horizontal rail part for support,
3a, 3b... Vertical rail part for steady rest, 5... Power supply rail, 6... Transport train, 7... Train machine frame, 8...
L! iI wheel drive vehicle-11... Vertical shaft rollers for steady rest 12A, 12B... Current collection unit, 13... Direct drive motor (DD momo--), 14...
Horizontal drive shaft, 15...Rotary disk, 16...DD momo--
Outer rotor of 17...DD momo--inner stator I
! 18 ・Cover 19... Electromagnetic Fregi, 20a201
]--Horizontal axis roller for backup, 22--Transported object support device, 26--Elevating drive means, 27 Hanger unit l-6

Claims (3)

[Claims] (1) In a transport train equipped with drive wheels that ride on a support rail portion of a guide rail, and a steady rest vertical axis roller that engages with a right and left lateral steady rest rail portion of the guide rail. , a direct drive motor is fitted onto the horizontal drive shaft with the drive wheel attached to the inner end thereof, and the rotor of this motor is connected to the horizontal drive shaft, and the stator of the motor is connected to the train machine frame. A transportation train consisting of (2) According to claim 1, wherein the electric train machine frame is not provided with supporting horizontal wheels other than the drive wheels, and a conveyed object support device is suspended from the electric train machine frame at a position directly below the drive wheels. The transportation train mentioned. (3) No supporting horizontal shaft wheels other than the drive wheels are provided on the train machine frame, and the lower side surfaces of the support rails on which the drive wheels ride are located on both front and rear sides of the position directly below the drive wheels. The transport train according to claim 1 or 2, comprising a backup horizontal shaft roller.