JP2745079B2 - Transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention moves a lifting / lowering means for lifting and lowering a hanger for supporting a transported object by using a hanging tool along a guide rail. The present invention relates to a transfer device suspended below a transfer moving body.

(Prior Art and Problems Thereof) When the transporting moving body travels on an upward / downward inclined path portion, the suspension lifting / lowering means is suspended so as to swing back and forth around a horizontal support shaft. Must be configured to always maintain a vertical attitude due to gravity. Then
A conventional transport apparatus of this type is known, for example, from Japanese Patent Application Laid-Open No. 2-299490, but a transport apparatus having a conventional suspending and lifting means described in the publication discloses a suspending and descending means. The use of a direct drive motor that can drive at low rotation and high torque and does not require a speed reducer was considered as the lifting drive source. However, taking advantage of the structural features of the direct drive motor, There has not been considered a device configured to be able to operate stably while reducing the overall size.

(Means for Solving the Problems) An object of the present invention is to provide a transport device that can solve the conventional problems as described above, and the means are denoted by reference numerals in the embodiments described later. In addition, the transfer device is a transfer device in which a suspension elevating means 9 is suspended below the transfer moving body 1 moving along the guide rail 5 so as to be able to swing back and forth. A frame 19 suspended below the transfer moving body 1 by a horizontal support shaft 12 so as to be able to swing back and forth.
And a motor 13 supported by the frame 19, and a plurality of suspending device hoisting and unwinding rotary members 15a to 15c pivotally supported by the frame 19 in a state where the motor 13 is divided into front and rear sides with respect to a position directly below the motor 13. A transmission means 24 for interlockingly connecting the motor 13 and each of the rotating bodies 15a to 15c, and a plurality of suspension tools 14a to 14c wound around each of the rotating bodies 15a to 15c.
The horizontal support shaft 12 is divided into a pair of left and right horizontal support shafts 12, 12 for separately supporting both side plates 17a, 17b of the frame 19, and 13 is a direct drive motor in which an inner cylindrical stator 20 fixedly mounted between both side plates 17a and 17b of the frame 19 and a transmission gear 26 constituting the transmission means 24 are concentrically mounted on an outer rotor 25. The pair of left and right horizontal support shafts 12, 12 are located on both sides of the motor 13, but the axis 13a of the motor 13 is lower than the center 12a of the pair of left and right horizontal support shafts 12, 12. The configuration is shifted.

In implementing the transport device having the above-described configuration, the pair of left and right horizontal support shafts 12 can be fastened to each other by a fastening rod 21 that passes through the inside of the inner cylindrical stator 20 of the direct drive motor 13.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a self-propelled transporting moving body, one driving wheel 2, a plurality of vertical shaft rollers 3 for steadying, and a pair of front and rear backup horizontal shaft rollers. A direct drive motor 6 movably supported by a guide rail 5 via a motor 4 to rotate the drive wheel 2 in any direction, forward and reverse; and a pair of front and rear slides on a power supply rail 7 laid on the guide rail 5 And a current collecting unit 8.

Reference numeral 9 denotes a suspension elevating means, which is a pair of left and right concentric left and right horizontal brackets 11 between a pair of left and right brackets 11 attached to a lower end portion 10 of the machine frame of the transfer moving body 1 located below the guide rail 5. Three units are suspended so as to be able to swing back and forth via the support shafts 12, 12, and three direct belt drive units 13a to 14c for lifting and lowering and three flat belt-shaped suspension units 14a to 14c are separately wound up and extended. Rotators 15a to 15c,
Conveyed object support means 16 (illustration and description of a detailed structure is omitted) such as a conveyed object hanging hanger is suspended by the hanging members 14a to 14c.

As shown in FIGS. 3 to 5, the suspension elevating means 9 comprises:
A connecting member 18 for connecting the pair of left and right side plates 17a, 17b and both side plates 17a, 17b, which are separately supported by the horizontal support shafts 12, 12, respectively.
The direct drive motor 13 has an axis 13a slightly lower than a common axis 12a of the horizontal support shafts 12, 12 (the swing axis of the suspension elevating means 9). The inner cylindrical stator 20 is disposed between the side plates 17a and 17b so as to be parallel to the core 12a, and one end of the inner cylindrical stator 20 is fixed to one side plate 17a of the frame 19. Also,
The pair of left and right horizontal support shafts 12 and 12 are fastened to each other by a fastening rod 21 that passes through the inside of the inner cylindrical stator 20 of the motor 13.

The rotating body 15a to 15c for winding up and feeding out the three hanging tools
Of these, the rotating body 15a is fixed at the center position of the drive shaft 22 supported between both side plates 17a, 17b, and the other two rotating bodies 15b, 15c
Are the side plates 17 of the drive shaft 23 supported between the side plates 17a, 17b.
The rotating body 15a and the pair of left and right rotating bodies 15b, 15c are fixed to both ends protruding from the a, 17b, and are distributed in a position symmetrical with respect to a position directly below the motor 13. Then
Flat belt-shaped suspenders 14a to 14c for the rotating bodies 15a to 15c
The winding direction of the rotating body 15a and the rotating body of the rotating body 15a are such that the respective suspenders 14a to 14c hang down from the outside of the rotating bodies 15a to 15c farther from the position directly below the motor 13. 1
The winding directions in 5b and 15c are opposite to each other.

The drive shafts 22, 23 of the respective rotating bodies 15a to 15c and the motor 1
The transmission means 24 for interlocking and linking the spur gears 3 includes a spur gear 26 fixed to the outer rotor 25 of the motor 13 and a wide spur gear 27 fixed to the drive shaft 22 in a state of meshing with the spur gear 26.
And the drive shaft so as to mesh only with the wide spur gear 27.
And a spur gear 28 fixed to the drive shaft 22.
An electromagnetic brake 29 is interposed between the one end of the base plate and the side plate 17b.

In the transporting apparatus having the suspension elevating means configured as described above, the direct drive motor 6 of the transporting moving body 1 is provided with the power collection rail 7 from the power supply unit 8 and the control device provided in the transporting moving body 1. And the motor 6 drives the drive wheel 2 to rotate.
It is possible to travel along the guide rail 5 and to convey an object supported by the object support means 16 suspended by the suspension elevating means 9.

Thus, the suspension elevating means 9 can swing back and forth around the horizontal support shafts 12 with respect to the transporting moving body 1.
The vertical posture can be maintained by gravity even when the transporting moving body 1 travels on the upward / downward inclined path portion. When loading / unloading the transferred object to / from the transferred object support means 16, the electromagnetic brake 29 is switched from the braking state to the released state, and the direct drive is performed from the power supply rail 7 via the current collecting unit 8. motor
13 to drive the outer rotor 25 to rotate forward, and to transmit the rotation to the respective spur gears 26 to 28 and the drive shafts 22 and 23 of the transmission means 24 to convert the respective rotating bodies 15a to 15c into a flat belt shape. Hanging tools 14a-14c
The conveyed object support means 16 can be lowered to an arbitrary level by interlocking rotation at the same speed in the direction in which Further, by rotating the outer rotor 25 of the motor 13 in the reverse direction and rotating the rotating bodies 15a to 15c at the same speed in the direction in which the suspenders 14a to 14c are wound up, the transported object supporting means 16 is raised. be able to.

When the transported object support means 16 has been moved up and down, the power supply to the motor 13 is stopped, and at the same time, the electromagnetic brake 29 is returned to the braking state, and the drive shaft 22 is brake-fixed. 15c can be locked.

(Operation and Effect of the Invention) According to the transport device of the present invention that can be implemented as described above,
Since the lifting / lowering means is suspended below the transporting movable body so as to be able to swing back and forth, even when the transporting movable body travels on an upward / downward inclined path portion, the hanging / elevating means is vertically moved by gravity. And the transported object can be transported safely by maintaining the transported object support means for supporting the transported object suspended through the suspending device by the suspension lifting / lowering means in the expected posture. However, according to the configuration of the present invention, the following special effects can be obtained.

That is, using a direct drive motor capable of low rotation and high torque drive and not requiring the use of a large reducer, the inner cylindrical stator of the motor is fixedly arranged between the left and right side plates of the frame, and the motor Since the transmission gear to the rotating body for lifting and unwinding the hanging tool was attached to the outer rotor, the width of the frame was reduced compared to when a large motor with a reducer was installed between the left and right side plates of the frame. The suspension elevating means can be configured to be small and lightweight.

Moreover, the left and right side plates of the frame of the suspension elevating means are pivotally supported by horizontal support shafts divided into right and left, respectively, so that the axis of the direct drive motor in the frame is supported by the horizontal support shaft. Because it is slightly lower than the center, the height of the suspension lifting device can be made lower than when a horizontal support shaft is installed above the direct drive motor, and the inner cylindrical stator of the direct drive motor The frame (suspension elevating means) does not swing around the horizontal support shaft due to the reaction force during the operation of the motor, even though the The lifting means can be operated.

In particular, according to the configuration of the second aspect, utilizing the characteristics of the direct drive motor having the inner cylindrical stator, the horizontal support shafts divided into left and right are fastened to each other with the fastening rods, and the strength of the entire apparatus is improved. Can be up.

[Brief description of the drawings]

FIG. 1 is an overall side view, FIG. 2 is an overall front view showing a guide rail in a longitudinal section, FIG. 3 is a front view of a suspension lifting / lowering means without a cover, and FIG. Plan view, fifth
The figure is a front view of the vertical development. DESCRIPTION OF SYMBOLS 1 ... Transfer moving body, 2 ... Drive wheel, 5 ... Guide rail, 9 ... Hanging elevating means, 11 ... A pair of left and right brackets, 12 ... A pair of left and right concentric horizontal support shafts, 13 ... … Direct drive motors, 14a-14c… Flat belt-shaped suspension tools,
15a ~ 15c …… Rotating body for lifting and unwinding the suspension tool, 16 ……
Conveyed object support means, 17a, 17b ... both side plates of frame, 19
…… Frame, 20 ………………………………………………………………………………………………………………………………………………………………………………………….
... transmission means, 25 ... outer rotor of direct drive motor, 26-28 ... spur gear, 29 ... electromagnetic brake.

Claims (2)

(57) [Claims] 1. A transport device in which a suspension elevating means is suspended below a transport moving body moving along a guide rail so as to be able to swing back and forth, wherein the suspension elevating means comprises A frame suspended at the lower part so as to be able to swing back and forth by a horizontal support shaft, a motor supported by the frame, and a plurality of suspensions pivotally supported by the frame in a state of being distributed on both front and rear sides with respect to a position directly below the motor. A lower member hoisting and unwinding rotating body, a transmission means for interlockingly connecting the motor and each of the rotating bodies, and a transported object supporting means suspended by a plurality of hanging tools wound around each of the rotating bodies. The horizontal support shaft is divided into a pair of left and right horizontal support shafts that separately support the both side plates of the frame, and the motor is fixedly disposed between the both side plates of the frame, the inner cylindrical stator, Outer row A direct drive motor in which a transmission gear constituting the transmission means is mounted concentrically, wherein the pair of left and right horizontal support shafts is located on both sides of the motor, but the axis of the motor is the pair of left and right left and right shafts. A transfer device that is displaced below the axis of the horizontal support shaft. 2. The transfer device according to claim 1, wherein the pair of left and right horizontal support shafts are fastened to each other by a fastening rod that penetrates an inner cylindrical stator of the direct drive motor.