JPS63267694A - Conveyor with ramp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention comprises a load-supporting lifting platform that is suspended from a self-propelled vehicle that moves along guide rails installed on the ceiling so that it can be raised and lowered freely. This invention relates to a conveyance device with a lifting platform.

(Prior Art) When transporting a load, the above-mentioned transport device with a lifting platform lifts the lifting platform that supports the front of the cargo to the upper limit position where it approaches the self-propelled vehicle. When the self-propelled vehicle is stopped at a position directly above the loading/unloading position set on the ground side under the route, the lifting platform is lowered to the loading/unloading level and the load/unloading operation on the lifting platform is performed. However, with conventional conveying devices of this type,
The platform is simply suspended from the self-propelled vehicle by a flexible hanging member such as a wire that can be wound up, and no means for regulating the ascending and descending path of the platform is used.

(Problems to be Solved by the Invention) In the above-mentioned conventional conveyance device with a lifting platform, there is a risk that the lifting platform may sway laterally during the lifting motion, and it is not possible to raise and lower the elevator safely and stably. In addition, if the stopping position accuracy of the self-propelled vehicle is low, there will be variations in the lowering limit position of the lifting platform.
If loading and unloading work on the platform is automatically performed using a transfer device, a safety problem arises.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention has the following features:
The present invention proposes a conveyance device with a lifting platform, in which a lifting guide for the lifting table is provided at a loading/unloading position on the ground side, and a guided portion is provided on the lifting table to engage with the lifting guide.

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

In Figures 1 and 2, 1 is the loading/unloading work passage 2.3
Rack installed on both left and right sides of , 4 is main guide rail,
5a and 5b are sub-guide rails branched from the main guide rail 4 via route switching devices 6a and 6b, and are constructed above the loading and unloading work passage 2.3 along the passage 2.3. has been done. Reference numeral 7 denotes a conveyance device that is guided by the main guide rail 4 and sub guide rails 5a and 5b and moves by itself. This conveyance device 7 includes the guide rails 4,
It is comprised of a self-propelled vehicle 8 movably suspended from 5a and 5b, and a lifting platform 10 suspended from the self-propelled vehicle 8 via a hoist 9 so as to be movable up and down.

As shown in FIGS. 3 and 4, the self-propelled vehicle 8 has a drive trolley 12 attached to the top of one end of the frame 11 in the front-rear direction so as to be relatively rotatable around a vertical axis 13. A floating trolley 14 is attached to the upper end so as to be relatively rotatable around a vertical axis 15, and the driving trolley 12 is provided with a guide rail 4. ．． 5a
, a grooved drive wheel 16 that fits into the upper edge of the guide rails 4° 5b, a motor 18 with a brake that drives the drive wheel 16 via a deceleration transmission means 17, and the guide rails 4° 5a, 5b.
A pair of front and rear steady rest guide rollers 19 sandwiching the lower edge of the guide rails 4, 5a and 5b from the left and right sides, a pair of front and rear backup rollers 20 that abut the lower edges of the guide rails 4, 5a and 5b from below, and a pair of front and rear backup rollers 20 that abut the lower edges of the guide rails 4, 5a and 5b from below. Current collector means 2 slidingly contacts the power supply rail means 21 installed on one side of 5a, 5b
2, and the idler trolley 14 is provided with grooved idler wheels 23 that fit into the upper edges of the guide rails 4.5a, 5b.
, a pair of front and rear steady rest guide rollers 24 sandwiching the lower edges of the guide rails 4, 5a, 5b from both left and right sides, and a pair of front and rear guide rollers 24 that abut the lower edges of the guide rails 4, 5a, 5b from below. It consists of a backup roller 25.

The lifting platform 10 includes a frame 2 having a rectangular side shape.
A running fork 27 is provided on the upper side of the lower side of the frame 26 and is movable in both left and right directions, and a hoist 9 mounted on the frame 11 of the self-propelled vehicle 8 is suspended on the upper side of the frame 26. pulley 2 that the wire 93 engages with
8 is pivoted. Further, guided portions 31 are provided in two stages, upper and lower, at each of the four corners of the frame 26 in plan view. Each guided portion 31 includes a guide roller 29 for anti-sway rest pivotally supported by a horizontal left-right axis, and a guide roller 30 for anti-sway rest pivotally supported by a horizontal axis in the longitudinal direction.

The frame 11 of the self-propelled vehicle 8 has guide rollers 29 at each guided portion 31 at the four corners of the upper stage provided on the platform 10 when the platform 10 is lifted up to the upper limit position by the hoist 9. There are provided guide rails 32 for preventing the sway of the elevator platform into which the . The lower end opening of the guide rail 32 for steadying the lifting platform is connected to the guide roller 29.
．． 30 is expanded into a trumpet shape to facilitate insertion.

It should be noted that a motor with a brake 34 that drives the hoist 9 that suspends the lifting platform 10, a motor with a brake 18 of the drive trolley 12, and a motor for driving the running fork 27 provided on the lifting platform 10 (not shown) is driven by electric power supplied from the power supply rail means 21 via the current collection means 22.

As shown in FIGS. 5 and 6, on the rack 1 side, on the loading and unloading work passages 2 and 3, each cargo receiver is attached to the front of the column 36, which is erected on both left and right sides of the section 35. An elevating guide rail 37 is provided over the entire height in which guide rollers 29, 30 of each guided portion 31 of the elevating platform 10 that moves up and down in the loading/unloading work passage 2.3 are fitted. The upper end opening of this guide rail 37 is also desirably widened into a trumpet shape in order to facilitate the fitting of each of the guide rollers 29 and 30. The rack 27 on the lifting platform 10 side is a member 38.
You can move up and down in between.

To explain an example of the warehousing work method, as shown in FIG. 3, a lifting platform 10 with a load 39 supported on a running fork 27 is transported while being hoisted by a hoist 9 to the upper limit position where it abuts a stopper 33. The device 7 is run. That is, the drive wheels 16 on the drive trolley 12
is rotated by a motor 18 to cause the self-propelled vehicle 8 to travel along the main guide rail 4. At this time, each guide roller 29 in the guided portion 31 at the upper four corners of the lifting platform 10
．． 30 is fitted into the guide rail 32 of the eight self-propelled vehicles, and the elevating platform 10 is in contact with the stopper 33 of the eight self-propelled vehicles. There's nothing to do.

As described above, the transport bag [7 for transporting the load 39 is moved to the sub-guide rail 5b (or 5a) belonging to the loading/unloading work passage 3 (or 2) by switching the path switching means 6b (or 6a).
), and the cargo receivers of the racks 1 on both the left and right sides of the loading/unloading work passage 3 (or 2) are handled by the transporting device 7 at the loading/unloading position adjacent to the loading/unloading section 35. Next, the hoist 9 is driven by the motor 34, and the lifting platform 10 is lowered into the loading/unloading work passage 3 (or 2) by the wire 9a. Since the guide rollers 29 and 30 of the guide section 31 are fitted into the elevating guide rails 37 of the rack example and lowered, the elevating path of the elevating table 10 relative to the rack 1 is constant, and there is no fear of swinging back and forth and left and right.

When the elevating platform 10 descends to the level corresponding to the specific cargo receiving section 35 to be warehoused, the hoisting and lowering of the elevating platform 10 is stopped, the running fork 27 moves in and out of the elevating platform 10, and the elevating platform 10 is lowered. The load 39 on the running fork 27 can be transferred to the specific load receiving section 35 of the rack 1 by the forking operation in combination with the movement. By hoisting the empty lifting platform 10 to the upper limit position again using the hoist 9, it can be removed upward from the loading/unloading work passage 3 (or 2) between ranks 1 and integrated with the self-propelled vehicle 8. . In this state, the conveying device 7 is run again, and the conveying device 7 is moved through a predetermined route connected to the sub-guide rail 5b (or 5a).
This transport device 7 can also be moved backward to return from the sub-guide rail 5b (or 5a) to the path of the main guide rail 4.

The warehousing operation can also be performed in the same manner as the warehousing operation described above.

Note that the lifting guide on the ground side (the rack 1 side in the example) and the guided part on the lifting platform side are not limited to the configuration shown in the above example. It is also possible to pivotally support the abutting front, rear, left and right steady rest guide rollers on the lifting platform 10, or attach a guide rail of an appropriate length in the vertical direction to the lifting platform 10 side, and fit the said guide rail on the rack 1 side. It is also possible to arrange a large number of matching steady rest guide rollers at intervals shorter than the length of the guide rail. In addition, as shown in Fig. 7, a lifting guide rail 40 is attached only to one side of the loading/unloading work passage.
As the guided portion 31 on the side of the lifting table 10, a guide roller 41 for a left-right rest that fits into the guide rail 40 on one side of the passage and regulates the lifting path of the lifting table 10 can be pivotally supported. Of course, a guide roller for a back-and-forth steady rest that comes into contact with the bottom surface of the guide rail 40 may also be used.

(Operations and Effects of the Invention) As described above, according to the conveyance device with a lifting platform of the present invention, a lifting platform suspended from a self-propelled vehicle has a platform installed on the ground side under the travel path of the self-propelled vehicle. Since a guided part is provided that engages with a lifting guide provided at the loading/unloading position, when the lifting platform is moved up/down with the self-propelled vehicle stopped directly above the loading/unloading position, the The guided part of the platform engages with the lift guide on the ground side to regulate the vertical path of the platform, which reliably prevents the platform from swaying as it ascends and descends, allowing the platform to move safely and smoothly. It can be raised and lowered.

In addition, even if there is some variation in the stopping position of the self-propelled vehicle, the ascending and descending path of the platform can be regulated to a fixed position.
Even when the loading and unloading of the load on the lifting platform is automatically performed by the transfer device as in the embodiment, the load can be transferred safely and reliably.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of the whole, Fig. 2 is an elevational view, Fig. 3 is a side view of the conveyance device, Fig. 4 is a front view of the same, and Fig. 5 is a lifting platform in the loading/unloading state. Elevation showing the relationship with the rack,
FIG. 6 is a cross-sectional plan view of the same, and FIG. 7 is a cross-sectional plan view showing another embodiment. 1... Rank, 2.3... Input/output work passage, 4...
・Main guide rail, 5a, 5b...sub guide rail,
6a+ 6b...Route switching means, 7...Transport device, 8...Self-propelled vehicle, 9...Hoist, 10...Elevating platform, 12...Drive trolley, 14...Idle trolley , 16... Drive wheel, 18... Travel drive motor, 21... Power supply rail means, 22... Current collection means, 2
7... Running fork, 29... Guide roller for longitudinal steady rest, 30.41... Guide roller for left and right steady rest, 31... Guided part, 32... Lifting platform 10 at the upper limit position Guide rail for positioning, 33.
... Stopper, 34 ... Hoist drive motor,
35...Consignment receiving section, 36...Prop, 37.40...
・Guide rail. Figure 2 Figure J Figure 5 Figure 6

Claims (1)

[Claims] A loading platform is suspended from a self-propelled vehicle movably supported on a guide rail installed on the ceiling so that it can be raised and lowered freely. A conveyance device with a lifting platform provided with a guided portion that engages with a lifting guide provided at a set loading/unloading position.