JPH0211455A - Conveying truck with conveying-object suspending device - Google Patents

Abstract

PURPOSE:To simplify the structure in a conveying bogie in which a suspending device is liftably suspended by means of belts put around a wind-up drum by providing four wind-up members in the axial direction and forming the wind-up drum and contriving the method of guiding the belts from each wind-up member. CONSTITUTION:In the captioned conveying bogie in which a conveying-object suspending device 8 is liftably suspended on the conveying truck 1 which is movably suspended from a guide rail 4 installed on a ceiling side via a pair of front and rear trolleys 2, 3, a laterally directed wind-up drum 10 having a total of four wind-up members 11a, 11b, 12a, 12b, two on each of both end portions in the axial direction, is provided on the front end portion of the conveying truck 1. Suspending belts 13a, 13b which are wound around the outside wind-up members 11a, 11b are turned downward by means of belt guides 14a, 14b provided in the vicinity of the drum 10. Suspending belts 15a, 15b wound around the inside wind-up members 12a, 12b are also turned downward by means of belt guides 16a, 16b provided in the vicinity of the rear end portion of the truck 1.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a device for suspending a conveyed object that is movably suspended by a belt that is wound up and fed out by a belt winding drum. This relates to a transport vehicle.

(Prior Art) In a conventional transport vehicle of this type, in order to stably suspend the four corners of the transported object suspension device using four belts, a belt is placed at a position directly above the four corners of the transported object suspension device. 4 on the transport trolley
Two winding drums are supported using two drive shafts,
Both station drive shafts were connected in conjunction with one motor to drive the four winding drums synchronously.

(Problems to be Solved by the Invention) In the conventional configuration as described above, four winding drums, two drive shafts, and a transmission means for interlocking and connecting the two station drive shafts and the motor are required. The disadvantage was that the structure was complicated and the cost was high.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention has the following features:
A belt winding drum that can be driven in forward and reverse rotation is installed on the transport vehicle, and the drum is provided with four winding sections in the axial direction, and one of the four hanging belts wound around each winding section is , the two outer belts are used to hang two places near both ends of one side of the object hanging device, and the remaining two inner belts are used to hang the object hanging device near both ends of the other side. The present invention proposes a transport vehicle with a device for suspending a transported object, in which the transport vehicle is provided with a belt guide that suspends the belts at two locations and allows the respective suspension belts to hang in parallel to each other.

(Operations and Effects of the Invention) By driving the belt winding drum in forward and reverse rotation, the four belts wound around the four winding sections on the drum can be synchronously wound up or let out. , the conveyed object suspension device suspended by the four belts can be driven up and down in parallel; however, according to the configuration of the present invention described above, as the belt winding drum to be driven, It is sufficient to pivot one long drum having four winding sections in the axial direction, and therefore the entire structure including the drive system becomes very simple and can be implemented at low cost. In particular, by incorporating the drive motor within the winding drum, the layer structure becomes simple and the entire structure can be made compact.

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

In FIGS. 1 and 2, reference numeral 1 denotes a transport vehicle, which is movably suspended from a single guide rail 4 installed on the ceiling side via a pair of front and rear trolleys 2.3. The linear motor main body 5 has a lower surface 4a of the guide rail 4 as a secondary conductor surface, and a current collector unit 7 that slides into contact with a power supply rail group 6 installed on the side surface of the guide rail 4.

Reference numeral 8 denotes a conveyed object hanging device which is suspended from the conveyance vehicle 1 so as to be able to rise and fall, and is provided with a pair of front and rear hangers 9 that open and close in the front and rear directions.

Reference numeral 10 denotes a long belt winding drum that is built in horizontally from side to side at one end in the front and rear direction of the conveyance vehicle 1, for example, at the front end, and as shown in FIGS. 2 each, total of 4 winding sections + 1a, llb,
12a and 12b. The two hanging belts +3a+3b wound around the two outer winding portions ++a and 1tb approach this drum 10 and move onto the transport vehicle 1.
Two hanging bells (+5a, +5b) are turned downward by belt guides 14a, 14b provided at Belt guide 1 installed in
It is turned downward by 6a and 16b.

However, as shown in FIG. 5, the lower ends of the two outer hanging bells l-13a and 13b are connected to two locations near both ends of the front side of the transported object hanging device 8, and the transported object is The lower ends of the two inner hanging bells) 15a, 15b are connected to two places near both ends of the rear side of the hanging device 8, and each hanging belt 13a, 13b, 15a
, 15b hang down parallel to each other, and the conveyed object suspension device 8 is suspended in a horizontal position. As shown in FIG. 4, the belt guides 14a, 14b, 16a, and 16b have a plurality of guide rollers 17 disposed in an arc shape along the movement path of the hanging belt, and one presser roller 18. However, the structure is not limited to this.

As shown in FIGS. 1, 2, and 5, guide rollers 19 are pivotally supported at the four corners of the conveyed object suspension device 8, and engage with the lifting guide rails on the ground side when descending. ing.

The belt winding drum 10 has a fixed shaft 20 concentrically fixed to the frame of the transport vehicle 1, as shown in FIG.
A pair of rotating members 21 rotatably supported by a and 20b
a, 21b, and both ends are fixed to the fixed shaft 20a.
, 20b, and a built-in motor 22 with a brake.

The output shaft 23 of the brake motor 22 and one rotating member 21b are interlocked and connected via the deceleration transmission mechanism 24. This reduction transmission mechanism 24 includes a small gear 25 integrally molded on the output shaft 23, a middle gear 26 meshing with the small gear 25, a small gear 28 interlocking with the middle gear 26 via a rotating shaft 27, and a small gear 28 interlocking with the middle gear 26 via a rotating shaft 27. It consists of an internal large gear 29 that meshes with the gear 28 and is fixed to the rotating member 21b. 30 is a fixed frame that supports the rotating shaft 27.

The transport vehicle 1 is caused to travel forward or backward along the guide rail 4 by supplying power from the power supply rail group 6 to the linear motor body 5 via the current collector unit 7 and the control unit 4Tj mounted on the transport vehicle 1. I can do it. However, while the transport vehicle 1 is stopped at a predetermined position or while traveling, the motor 22 with a brake built in the belt winding drum 10 receives power from the power supply rail group 6 to the current collecting unit 7 and the motor mounted on the transport vehicle 1. Powered through the control device,
By rotating the output shaft 23 at the same time as the brake of the motor 22 is released, rotational force is transmitted to the rotating member 21b via the deceleration transmission mechanism 24, and the belt winding drum 10 is rotated at a predetermined speed in the belt feeding direction or belt winding. It can be rotated in any direction.

When the drum 10 rotates in the belt feeding direction, 4
4 wound around two winding portions 11a to +2b.
When the book hanging belts +3a, +3b, 15a, and 15b are fed out at the same speed, the conveyed object hanging device 8 is lowered while maintaining a horizontal position, and the drum 10 is rotated in the belt winding direction. Book hanging bell) +
3a.

+3b, 15a, and 15b are hoisted up at the same speed, and the transported object suspension device 8 rises while maintaining a horizontal attitude. By raising and lowering the transported object suspension device 8, the transported object supported by the hanger 9 can be transferred to a loading platform on the ground, or conversely, the transported object can be lifted from a loading platform on the ground. .

It is preferable that the motor 22 is built into the belt winding drum 10, but in some cases, the motor 22 may be arranged outside the drum 10 in parallel, and the two may be interlocked and connected by a suitable transmission means. Furthermore, although a linear motor is used as a means for propelling the transport vehicle 1, a rotary motor that drives the wheels of the trolley may also be used.

[Brief explanation of the drawing]

Fig. 1 is a side view of the whole, Fig. 2 is a front view of the same, Fig. 3 is a schematic plan view showing the belt winding drum and each belt, Fig. 4 is a perspective view of the same, and Fig. 5 is an object to be conveyed. A plan view of the hanging device, and FIG. 6 is a cross-sectional plan view showing the internal structure of the belt winding drum. DESCRIPTION OF SYMBOLS 1... Transport vehicle, 2.3... Trolley, 4... Guide rail, 5... Linear motor main body, 6... Supply N rail group, 7... Current collection unit, 8...・Transferred object hanging device, 10...belt winding drum, ll
a~12 b-... Winding section, +3a, 13b, +5
a, 1s b-=-hanging belt, 14a, +4b,
16a16b...Belt guide, 20a, 20b...
・Fixed shaft, 22...Motor with brake, 23...
・Motor output shaft, 24... Reduction transmission mechanism. The most

Claims (1)

[Claims] A belt winding drum that can be driven in forward and reverse rotation is installed on the transport vehicle, and the drum is provided with four winding sections in the axial direction, and one of the four hanging belts wound around each winding section is , the two outer belts are used to hang two places near both ends of one side of the object hanging device, and the remaining two inner belts are used to hang the object hanging device near both ends of the other side. A transport vehicle with a device for suspending a transported object, the transport vehicle comprising a belt guide that is suspended at two locations and allows the respective suspension belts to hang in parallel with each other.