JPS61178394A - Attachment device for crane - 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 "Field of Industrial Application" The present invention relates to an attachment device that is adapted to be lowered by a crane to scoop up articles, and more particularly to an attachment device that includes an attitude control mechanism.

``Prior Art'' Recently, in the cargo handling work of articles placed on shelves, racks, etc., instead of using a crane or a forklift, a fork-type attachment is sometimes attached to the crane to carry out the specified work. In such cases, it is necessary to use special equipment for shelves or racks.

[Problems to be Solved by the Invention] As described above, the attachments of the prior art require special equipment for use, resulting in poor work efficiency. In addition, in order to handle a wide variety of goods, it is necessary to prepare several types of attachments, and depending on the size and weight of the goods, it may be difficult to align the center of gravity of the goods with the center of suspension, making it difficult to maintain balance. be.

"Means for Solving the Problems" The present invention provides an attachment device of the type described above that includes an attitude control mechanism.

Embodiment Referring to FIGS. 1 to 3, an attachment device 10 according to an embodiment of the present invention is shown suspended from a hook 2 of an overhead running lane 1. This attachment] - The device 10 includes a frame part 4, a fork part 5 which is movably attached to this frame part and is adapted to scoop up an article (A>), and a fork part 5 which is attached to the frame part and which is adapted to scoop up an article (A>). It includes a drive unit 6 to drive and an attitude control II mechanism 7 to control the attitude of the attachment device.

The frame section 4 includes a pair of guide rails 8, a plurality of cross members 9 that fix the guide rails in parallel to each other, and a ceiling that is fixed to the guide rails so as to extend perpendicularly to the longitudinal direction of the guide rails. The member 11 is included.

The drive section 6 that moves the fork section 4 up and down along the guide rail 8 is composed of a hoist 12. This hoist 12
is suspended from a rod of the ceiling member 11, and a wire is fed out, and the fork portion 5 is suspended by a hook fixed to the tip of the wire.

The fork section 5 includes two pairs of guide rollers 14, a fork frame 13 that is suspended from the hook of the hoist, a pair of forks 15 whose distance between them can be adjusted, and the forks. - Fork adjustment mechanism 1 that is attached to the frame and adjusts the fork
Contains 6. Referring to FIGS. 3 and 4, the fork adjustment mechanism 16 includes:) a guide rod 17 fixed to the A-ri frame 13; motors 18a and 18b attached to both ends of the guide rod; The motor 1
Screw bolts 20a, 20b are connected to the output shafts of the output shafts 8a, 18b, and the other end is supported by a block 19 fixed to a guide rod.

and a moving block 21 fixed to one end of the fork and threadedly engaged with the screw poles i to 20a and 20b, respectively. One end of each fork 15 is connected to the guide
It has a cross-sectional shape that partially surrounds the rod 17, and is provided with a plain bearing 22 to improve sliding performance on the guide rod.

Referring to FIGS. 5 and 6, attachment device 10
A posture control mechanism 7 is shown, which includes a counterweight 24 on which two pairs of rollers 23 are rotatably attached.
．． a drive motor 25; a first screw threadably engaged with a screw hole formed in the counterweight; one end connected to the output shaft of the drive motor 25; and the other end supported by an end plate 11a of the ceiling member 11; A bolt 26, two pairs of rollers 27 are rotatably attached to both sides, and a hanging fitting 28 is adapted to be hung from the hook 2 of the lane 1 that runs on the ceiling.
A second screw bolt 2 is threadedly engaged with a screw hole formed in this hanging fitting and has both ends bearing on the ceiling member 11.
9 and a gear device 30 provided between the first and second screw bolts. The roller 23 of the counterweight 24 and the roller 27 of the hanging fitting 28 are connected to the ceiling member 11.
The guide groove 11b is formed in the guide groove 11b.

Referring to FIGS. 9 to 11, a power supply line 40 from an external power source is connected to a first connection box 49 of a lane 1 that is supported by a support bracket 3 attached to the ceiling and runs overhead. The feeder lines 41 and 42 coming out of the connection box are connected to the second connection box 50 and the control box 32 of the attachment device 10, respectively.

A control box 32 operated by the driver is not shown in FIGS. 1 and 2, but is attached to the attachment device 10 at a convenient location for easy operation. Signal lines 43 and 46 coming out of the control box 32 are connected to the second connection box 50 of the overhead running lane 1, the hoist 12, and the drive motor 25 for the counterweight, respectively. Power supply lines 44 and 45 coming out of the control box 32
．． 47 and 48 are connected to the hoist 12, the counterweight drive motor 25, and the fork adjustment motors 18a and 18b, respectively.

"Action" In the operation, when scooping up and transporting the article (A),
First, the overhead running lane 1 is operated to transport the attachment device 10 to the position where the article (A) is placed. During this time, the attachment device 10 holds its handle 31 (first
(see figure) is held by the driver, so it maintains a stable posture without rocking. Next, the driver operates the control box 32 to drive the hoist 6 to move the forks 15 up and down to match the height of the article (A), and at the same time drives the motors 18a and 18b to increase the distance between the forks 15. is adjusted according to the size of article (A). In this state,
Move the overhead running lane 1 and move the item (A> to fork 1
Scoop it out using Step 5. Next, the hoist 6 is driven to
When lifting the item (A), the center of gravity of the article (A) may deviate from the vertical extension of the hanging position of the attachment device 10, causing the entire attachment device 10 to tilt.In such a case, the drive motor 25 is driven to Balance weight 24
is moved, and at the same time, the hanging position is moved via the gear device 30 so that the attachment device 10 body becomes vertical. As shown in FIG. 8, the gear ratio of the gear device 30 is set so that the moving distance of the counterweight 24 is twice the moving distance of the hanging position. Alternatively, the gear ratio of the gear system 30 is 1:1, and the screw bolt 29
The pitch of the screw bolt 26 may be set to one half of that of the screw bolt 26.

``Effects of the Invention'' As described above, according to the present invention, it is possible to adjust the hanging position of the attachment device and the interval between the forks, so even if the weight and size of the articles differ, the loading and unloading work of the articles can be carried out smoothly. can be done.

[Brief explanation of the drawing]

1 and 2 are a side view and a front view of an attachment device according to an embodiment of the present invention suspended in an overhead running lane, FIG. 3 is a perspective view of a fork adjustment mechanism, and FIG.
The figure is a broken perspective view of the fork adjustment mechanism, Figure 5 is a plan view of the attachment device shown in Figures 1 and 2, Figure 6 is a broken perspective view of the attitude control mechanism, and Figures 7 and 8 are Figure 9 is a schematic side view showing the operation of the posture control mechanism; Figure 9 is a diagram showing the lane for overhead running and the wiring to the attachment device;
FIG. 0 is a diagram showing the connection relationship between the overhead running lane, the power supply line, and the signal line, and FIG. 11 is a perspective view showing the first and second connection boxes installed in the overhead running lane. In the figure, 7...Attitude control mechanism 10...Attachment device 11b...Guide groove 16...Fork adjustment mechanism 17...Guide iron 18m18b...Motor 20a, 20b...Screw bolt 24 ...Balance weight 25 ... Drive motor 26 ... First screw bolt 28 ... Hanging fitting 29 ... Second screw bolt 30 ... Gear device

Claims (5)

[Claims] (1) An attachment device configured to be suspended from a crane, which includes a frame portion configured to be suspended from a hook of the crane, and a frame portion movably attached to the frame portion to scoop an article. An attachment device including a fork portion and a drive portion attached to the frame portion to drive the fork portion, further comprising a posture control mechanism. (2) The attachment device according to claim 1, wherein the fork portion is movable relative to the frame portion in a direction perpendicular to the scooping direction of the article. (3) The attachment device according to claim 1, wherein the hanging position of the frame portion suspended by the crane is movable in the scooping direction of the article. (4) The attachment device according to claim 1, wherein a counterweight of the frame portion is moved as the hanging position of the frame portion suspended by the crane is moved. . (5) The attachment device according to claim 1, further comprising a box for connecting a power supply line and a signal line.