JPH0527065Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to movable shelving equipment installed in a narrow space in a warehouse, for example, and used to store and store various articles.

BACKGROUND ART Conventionally, as for this type of equipment, for example, as seen in Japanese Utility Model Application Publication No. 16173/1980, a movable shelf that is decelerated from free run by interlocking a motor with an electromagnetic brake to the running wheels is used. Immediately before stopping the item sufficiently close to other shelves or items,
Alternatively, the electromagnetic brake is applied immediately to lock the motor from idling or reversing, ensuring that the motor stops at a fixed position and remains stopped even if the floor surface on which the running wheels run is sloped due to ground subsidence. It has been made possible to do so.

Problems that the invention aims to solve When highly volatile or flammable oils are stored on movable shelves, it is necessary to fix the movable shelves in that position in the event of an earthquake. However, when the movable shelf is brought to an emergency stop, sparks are generated at the sliding contact portion of the brake when the electromagnetic brake attached to the conventional motor is activated. Therefore, there was a risk that this spark would ignite the gas in the atmosphere, causing a fire or explosion.

The present invention solves the above problems and can stop and lock the movable shelf without generating sparks even when stopping the movable shelf by braking, especially when making an emergency stop in the event of an earthquake. The purpose of the present invention is to provide mobile shelf equipment that can safely store oils, etc.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a movable shelf that can freely travel back and forth on a fixed path via running wheels, and a movable shelf that moves in conjunction with the running wheels. In addition to providing a drive device to
An air brake connected to the drive shaft of the running wheels is provided separately from the drive device, and an explosion-proof control valve for the air brake is provided near the air brake.

Operation In the above configuration, when the movable shelf is stopped during normal running while the movable shelf is running, the air brake is activated by the explosion-proof control valve, and the drive shaft of the traveling wheel is locked by the braking of the air brake, and when the brake is applied, the air brake is activated. It is stopped without sparking. Furthermore, in the event of an emergency stop, the drive shaft of the running wheels is braked and locked using the air brake, so there is no spark and the highly flammable oil is stored in the movable shelf and ignites in the atmosphere around the shelf. Even if the tank is filled with highly toxic gas, the gas can be prevented from igniting. In addition, since the air brake is small, each movable shelf is housed in its low frame, and by providing an air brake control valve for each movable shelf, each movable shelf can independently maintain sparks at all times. In addition, since the air brake is connected to the drive shaft of the traveling wheel separately from the drive device, it is reliable in the event of an emergency stop.

Embodiment An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a pair of front and rear fixed shelves, and between these fixed shelves 1, there are arranged a plurality of movable shelves 2 that are movable in the direction between the fixed shelves, that is, in the direction toward and away from each other. The fixed shelf 1 consists of a base frame 3 and a shelf frame 4 provided on the base frame 3, and the shelf frame has a plurality of divided storage spaces 5 in the vertical and horizontal directions.
The movable shelf 2 consists of an underframe 6 and a shelf frame 7 provided on the underframe 6, and the shelf frame 7 similarly has a plurality of compartment storage spaces 8. The underframe 6 includes a rectangular frame-shaped main beam 9 including a front and rear beam section 9A, a left and right beam section 9B, and a left and right beam section 9B.
A plurality of locations in between are connected by sub-beams 10 and reinforcement beams 11 in the front-rear direction. Front and rear beams 9A and sub-beams 1 at the front and rear of this movable shelf 2
0 is provided with running wheels consisting of drive wheels 14 and idle wheels 15 that run on rails 13 laid in the front-rear direction on the floor 12 between the fixed shelves 1, respectively. The drive wheel 14 is located at the front of the underframe 6.
Bearings 16 on the front and rear beams 9A and sub beams 10
It is rotatably supported via the left and right beams 9B and attached to a drive shaft 17 parallel to the left and right beams 9B. A sprocket wheel 20, which is an output shaft of a motor 19 for forward and reverse movement provided on the underframe 6, is interlocked with a sprocket wheel 18 attached to the intermediate portion of the drive shaft 17 via a chain. The motor 19 drives the driving wheels 14 in forward or reverse rotation.

21 is an intermediate shaft disposed near the center of the drive shaft 17 in parallel with the drive shaft 17, and is fixed between the sub-beam 10 and the reinforcing beam 11, as shown in FIGS. 3 and 4. on the attached mounting plate 22,
It is rotatably supported by a bolted bearing 23, and a chain 26 is wound and connected between a driven wheel body 24 fixed to the intermediate shaft 21 and a driving wheel body 25 fixed to the drive shaft 17. Linked. 2
An air brake 7 is connected to one end of the intermediate shaft 21 and is fixed to the mounting plate 22. A pressurizing pipe 29 connected to an explosion-proof control valve 28 is connected to the air brake 27, and when the compressed air from the control valve 28 is reduced in pressure, it brakes and locks the intermediate shaft 21 to prevent the rotation of the drive wheels 14. Configured to stop. 30 and 31 are flexible hoses and cables arranged between the shelves 1 and 2, which are connected to the control valve 28 and the control panel 32 arranged on the movable shelf 2, and are connected to the control valve 28 and the control panel 32 to transmit compressed air and electric control signals. etc. will be supplied. Reference numeral 33 denotes a foreign object detection device provided on the opposing surface of each shelf 1, 2 to detect the shelf 1 or 2 adjacent in the traveling direction, and is composed of a phototube device or the like. This detection signal is sent to the control panel 32 when the distance to the adjacent shelf 1 or 2 reaches a predetermined detection distance, and the signal from the control panel 32 causes the motor 19 to be stopped or stopped from decelerated rotation,
The air brake 27 is operated by the control valve 28.

Next, the effect will be explained.

The movable shelf 2 rotates the drive wheels 14 by driving the motor 19 and runs on the rails 13 at a constant speed. When the distance to the approaching adjacent shelf 1 or 2 reaches the detection distance, the foreign object detection device 33 is activated and the detection signal is sent to the control panel 3.
2, and the control panel 32 issues a deceleration running command or a stop command to the motor 19. As a result, the motor 19 rotates at a reduced speed or becomes free, and the movable shelf 2 moves at a reduced speed or moves at a reduced speed due to inertia, sufficiently approaches the adjacent shelf 1 or 2, and stops at a predetermined position. Immediately before or after this stop, a command to operate the air brake 27 is issued from the control panel 32 to the control valve 28, the air pressure being supplied to the air brake 27 is reduced, and the air brake 27 is
locks the intermediate shaft 21 and fixes the drive wheel 14.

In addition, if an earthquake occurs while the movable shelves 2 are in use, the power to these shelving equipment will be cut off.
The supply source of high pressure air such as a compressor is stopped, the air pressure supplied to the air brake 27 is reduced, the air brake 27 is activated, and the movable shelf 2 is brought to an emergency stop. At this time, since the brake is an air brake 27, unlike conventional electromagnetic brakes, sparks are not emitted from its sliding portions and ignite gas in the atmosphere.

Effects of the invention As described above, according to the invention, air brakes connected to the running wheels are provided, so sparks are not generated from the brakes when stopped during normal driving or emergency stops in the event of an earthquake, and there is no ignition. It is possible to safely store hazardous materials such as hot oils. In addition, unlike explosion-proof electromagnetic brake motors, air brakes are small, so each movable end can be stored in its low frame, and each movable shelf is equipped with an explosion-proof control valve for the air brake. This allows each movable shelf to be braked independently and always without generating sparks.Furthermore, since the air brake is connected to the drive shaft of the traveling wheel separately from the drive device, it can directly lock the wheel. possible and highly reliable.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, FIGS. 1 and 2 are an overall plan view and an overall side view of the movable shelf equipment, FIG. 3 is a plan view of the air brake mounting part, and FIG. 4 is shown in FIG. 3. - It is an arrow view. 1... Fixed shelf, 2... Movable shelf, 14... Drive wheel, 15... Idle wheel, 17... Drive shaft, 19...
...Motor, 21...Intermediate shaft, 27...Air brake, 28...Control valve.

Claims (1)

[Scope of utility model registration request] A movable shelf that can freely travel back and forth on a fixed path via running wheels is provided, and this movable shelf is provided with a drive device that interlocks with the running wheels, and within the underframe of the movable shelf, the drive device is A movable shelving facility characterized in that an air brake is separately connected to the drive shaft of the traveling wheel, and an explosion-proof control valve for the air brake is provided near the air brake.