JPH063915U - Accident occurrence prevention device in article storage device - Google Patents

Abstract

(57) [Summary] [Purpose] In an article storage device that moves up and down a large number of hangars connected to a chain that runs endlessly, when the chains are accidentally disconnected, all hangars are immobilized in the same position at the same time. Keep it stationary to prevent the fall accident. [Structure] Each hangar 3 is moved up and down along a fixed track piece 7, and each hangar 3 has a brake shoe 12 that comes into pressure contact with the track piece 7 when the chain 10 is cut, an electromagnet device 13 for operating the chain, and a chain cutting operation. A detection switch 22 is provided, and when the chain 1 is cut off, the electromagnet device 13 is operated by the detection signal of the switch 22 to press the brake shoe 12 against the track piece 7 to hold each hangar 7 to the track piece 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an accident prevention device when a chain is cut in a case where a number of hangars for storing articles are vertically moved by an endless chain.

[0002]

[Prior art]

 In an article storage device that can move by connecting a hangar to a chain that runs endlessly, if the chain accidentally cuts, the hangar connected to this will overlap and drop, resulting in a serious accident. It is unavoidable, and therefore various accident prevention measures have been proposed as countermeasures.

[0003]

[Problems to be solved by the device]

 Many of the above-mentioned conventional accident prevention means stop the drive source such as a motor even when electrical or mechanical, and there is no one that individually stops the hangars connected to the chain when the chain is disconnected. However, even if there was a thing to stop each hangar, its structure was complicated, maintenance and maintenance of it was troublesome, and the sharp rise in equipment construction was unavoidable.

[0004]

[Means for Solving the Problems]

 In view of the above, the present invention ensures that when a chain is cut, each hangar connected to the chain is reliably stopped at that position by an electric signal that automatically detects this to prevent accidents due to falling. In a device that rotates a chain suspended from the upper and lower chain wheels, directly or indirectly, moves a large number of consecutive hangars up and down in an endless manner, and stops the selected hangar at a specified position to put the contents in and out. In the straight line section where the hangars move up and down, vertically guide track pieces are fixed on both sides of the hangar row, and each hangar is moved up and down along the track pieces on both sides by the vertical recesses formed on both sides. At the same time, brake shoes are fixed on both sides inside the recess of each hangar by a brake shoe that comes in contact with and separates from both sides of the track piece, and a switch that is activated by a shock when the chain is cut. Comprising providing an electromagnet device for pressing the strip.

[0005]

[Action]

 In the device of the present invention, when the chains are accidentally disconnected, the switches installed in each hangar due to the impact that the hangars connected to the chain are about to fall all at once. The brake shoes provided in each hangar are pressed against the fixed track pieces, and the hangars are fixedly connected to the fixed track pieces via the brake mechanism to hold the hangers in a stationary state and prevent the fall.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1, the article storage device is composed of a storage case 3 which is connected to a chain 1 which is suspended from upper and lower chain wheels 2 and 2 and which is rotated at equal intervals.

In the illustrated example, a support rod 5 is attached to the upper surface of the storage case 3, and both ends of the support rod 4 are attached between the chains located on both sides to connect the chain 1 and the storage case 3 to drive the lower motor 5. When the chain 1 interlocks with, the hangar 3 is sent endlessly in the direction indicated by the arrow in FIG. 1, and the push button (not shown) actuates the motor 5 to activate the garage 3 at any position. The chain 1 is rotated to position the selected hangar 3 at the doorway 6, the drive of the chain 1 is stopped, and the articles in the hangar 3 are put in and taken out.

In the example shown in the drawing, the container 3a that has been extracted is stored in the storage box 3 so that it can be freely taken in and out, and the articles are stored in the extraction box 3a.

In the straight path section of the chain 1 that travels between the upper and lower chain wheels 2 and 2, vertically positioned guide track pieces 7 and 7 are respectively fixed to both sides of each hangar 3 and fixed. The hangar 3 is formed with recesses 8 on both sides which are fitted in the track pieces 7 in the up-down direction, and the hangars 3 are moved up and down along the track pieces 7 by the respective recesses 8 as shown in FIG. In the upper and lower linear movement sections, each hangar 3 is moved up and down by the guide rods 9 at its four corners without moving back and forth and left and right.

The fixed track piece 7 has a U-shaped cross section as shown in FIG. 4, both side surfaces of which are flat surfaces, and a material 10 having a large friction coefficient such as rubber is adhered to both surfaces thereof, and the surface thereof is Is a rough surface, and the track piece 7 is fixed to the fixed wall 10 by a support material 11.

Brake shoes 12 facing the friction material 10 through the holes in the recess wall 8 a are provided on both sides of the recess 8 of each storage case 3 along the fixed track piece 7, and the brake shoes 12 are mounted on the electromagnet device 13. The friction member 10 is brought into contact with or separated from the friction member 10 by the operation, and the respective housings 3 are connected to the fixed track pieces 7 by the contact to hold the housing 3 immovably.

The electromagnet devices 13 provided on both sides of the recess 8 are provided in the vacant chambers 16 and 16 defined by the partition wall 15 inside the container casing 14 forming the storage case 3 as shown in FIG. Each of them is composed of a pair of actuating electromagnetic coils 17, 17 and an actuated electromagnetic coil 18 located between them. The actuating electromagnetic coils 17, 17 are fixed to the housing 14 and actuated electromagnetic coils 18 Is movably provided so as to be attracted to each of the operating electromagnetic coils 17 and 17, and the supporting member 19 to which the movable operated electromagnetic coil 18 is attached is used as an operating rod, and its inner end 19a is vacant. A fixed shaft 20 in 16 is rotatably supported, and the brake shoe 12 is connected to an inner end 19a of the operating rod 19 by a shaft piece 21.

Further, a switch 22 is provided in an appropriate position on the housing 14 of each storage case 3 to detect the disconnection of the chain 1 at an untimely time.

As shown in FIG. 5, the switch 22 is provided with a permanent magnet piece 22b above the inside of the case 22a so that an arbitrary set position can be adjusted up and down, and is fixed by a support bar 22d below the inside of the case 22a. The floating piece 22c made of an electrically conductive material is movably supported and accommodated, and the floating piece 22c contacts the floating piece 22c when the floating piece 22c moves upward above the space between the permanent magnet piece 22d and the immovable piece 22c. A pair of elastic contact pieces 22e provided in such a manner as described above are provided and configured, and the elastic contact pieces 22e are connected to the energizing circuit of the movable electromagnetic coil 18 for connection.

The floating piece 22c may be simply placed on the bottom plate of the case 22a or a supporting plate provided in the case at a position relative to the upper magnet piece 22b.

In this switch 22, the floating piece 22c floats in the case 22a due to the momentary impact of sudden drop with the hangar 3 when the chain 1 of the storage device is accidentally disconnected, and contacts the pair of contact pieces 22e. When the chain 1 is cut off by closing the electric circuit between the contact pieces 22e through the electrically conductive floating piece 22b by the operation of being attracted to the upper permanent magnet piece 22b in this state. It detects and emits a signal.

Further, as shown in FIG. 4, the energizing circuit of the electromagnet device 13 and the switch 22 of each hangar 3 is connected to the power circuit wiring 23 arranged vertically on one side of the fixed track piece 7 as shown in FIG. By moving the brush-like contact piece 24 provided in the recess 8 while making contact with the brush-like contact piece 24, the energizing circuit can be formed even while the container 3 is moving. In the electromagnetic device 13 shown in the embodiment of FIG. 3, the actuating rod 19 is excited when the actuated electromagnetic wire 18 is attracted to the electromagnet 17 above the pair of actuating electromagnetic wires 17, 17 as described above. Holds the brake shoe 12 away from the surface of the friction material 10 of the fixed track piece 7 by tilting with the shaft 20 as the center, and each hangar 3 is free to move along the track piece 7 in its respective recess 8. Move up and down. In this case, since the coils 17 and 18 in the suction relationship are joined to each other at the different polarities of N and S shown in the figure, when the relationship is the same, the movable coil 18 is momentary due to repulsion. Away from the wheel 17. Using this principle, if the current direction of the movable wire ring 17 is changed by the signal of the switch 22 that operates by detecting the disconnection of the chain 1, the N and S poles of the wire wire 17 are reversed, and The movable wire ring 17 repels and separates from the upper wire ring 18, and due to the reverse transformation, the lower surface becomes an N pole and is instantly adsorbed to the lower fixed wire ring 17 side. The brake shoe 12 is brought into pressure contact with the surface of the friction material 10 of the track piece 7 by the movement, and the simultaneous press contact of the brake shoes 12 on both sides reliably prevents the hangar 3 from falling and is held immovably.

In the above-described embodiment, the brake shoe 12 is actuated by utilizing the repulsive action of the same pole of the electromagnet, but the upper fixed wire ring 17 in FIG. 3 is removed and the movable wire ring 18 is magnetized. A switch for detecting the disconnection of the chain 1 by attaching the brake shoe 12 to the movable member of FIG. 1 and holding it in a state of withstanding the weight of the movable member and slightly separated from the lower electromagnet coil 17. The signal from 22 releases the holding of the movable member, and the lower electromagnetic wire ring 17 is strongly attracted and held by the lower electromagnetic wire ring 17 while the lower electromagnet wire ring 17 is energized and excited to release the holding. The brake shoe 12 may be activated.

In the figure, reference numeral 25 indicates a support member for supporting the movable electromagnetic coil 18, that is, a guide piece which holds the free end of the operating rod 19.

Further, each of the electromagnetic coils 17 and 18 is shown by arranging two of them in parallel, but it may be one large size.

[0022]

[Effect of device]

 According to the present invention, in an article storage in which a large number of storages connected to the endless chain are moved up and down by rotating the endless chain, when the chain is accidentally cut, a signal from a detection switch provided in each storage is provided. Then, the brake shoe is pressed against the fixed track piece by the electromagnet device installed in each hangar, the hangar is fixedly connected to the fixed track piece, and the fall can be automatically prevented. It has an effect that can be prevented.

[Brief description of drawings]

FIG. 1 is a side view of an article storage device according to the present invention.

FIG. 2 is a cross-sectional view of the article storage device.

FIG. 3 is a sectional view taken along the line III-III of FIG.

FIG. 4 is a cutaway plan view of FIG.

FIG. 5 is a cutaway side view of the switch.

[Explanation of symbols]

1 chain 2 upper and lower chain wheels 3 hangar 7 fixed track piece 8 recessed part in hangar 12 brake shoe 13 electromagnet device

Claims (1)

[Scope of utility model registration request] 1. A plurality of hangars which are directly or indirectly continuous to a chain which is suspended by upper and lower chain wheels and which rotates are vertically moved endlessly, and the selected hangar is stopped at a predetermined position to take out contents. In the device to put in, in the straight section where the hangar moves up and down, vertically guide track pieces are fixed on both sides of the hangar row, and each hangar is formed on both sides by vertical recesses along both side track pieces. Brake shoes that move up and down, and that contact and separate from both sides of the track piece on both sides inside the recess of each hangar, and an electromagnet that presses the brake shoe to the fixed track piece by a switch that is activated by the impact when the chain is cut. Accident prevention device in an article storage device provided with a device