JPH10250971A - Vacuum adsorption lifting device and vacuum adsorption lifting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the weight of a vacuum lifer by applying the constitution that a first vacuum chamber mounted on a truck and a second vacuum chamber of the vacuum lifter suspended from the truck so as to be capable of freely ascending and descending, are communicated to each other and evacuated with a vacuum pump. SOLUTION: For housing a lifted object 2 at the prescribed position, a first connection passage 14a is first connected to a second connection passage 20a, thereby keeping a first vacuum chamber 14 and a second vacuum chamber 20 communicated to each other. Also, a vacuum pump 10 is operated to evacuate the first vacuum chamber 14 and the second vacuum chamber 20. Then, when a hoist drum 23 is rotated to lower a vacuum lifter V via a wire rope 22, the first connection passage 14a and the second connection passage 20a are replaced from a connected state, and the second vacuum chamber 20 moves away from a truck 3 under the maintenance of a vacuum condition. Also, the vacuum of the second vacuum chamber 20 acts, with the adsorptive surface thereof kept in contact with the lifted object 2, thereby adsorb the lifted object 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a vacuum suction lifting apparatus and a vacuum suction lifting method, and in particular, to reduce the weight of a vacuum lifter hung up and down on a truck.
Moreover, it is possible to prevent the suspended object from falling,
Further, the present invention relates to a vacuum suction lifting device and a vacuum suction lifting method capable of reducing cost when a plurality of vacuum lifters are provided.

[0002]

2. Description of the Related Art Conventionally, an object to be lifted, such as paper, is wound in a roll shape. More specifically, an outer diameter is about 1 m to 3 m, a height is about 0.5 m to 3 m, and a weight is about several t to several tens t. When storing the sheet 2 'in a warehouse, as shown in FIG. 16, the sheet 2' is vacuum-adsorbed by a vacuum lifter V ', and the vacuum lifter V' is lifted. (See Japanese Patent Publication No. 46-24328).

In the apparatus shown in FIG. 16, a vacuum lifter V 'is provided with a power supply box 100 containing a vacuum pump, an electric motor for driving the vacuum pump, a switching valve, and the like. In addition to the heavy weight of the trolley 2 ', the lifting rope also weighs the vacuum pump, the electric motor for driving the vacuum pump, the power supply box 100 including the switching valve, etc., and the weight of the lifting rope. (Fig. 16 shows the first example of Japanese Patent Publication No. 46-24328).
Although it is equivalent to the figure, there is little impression that the power supply box 100 is very heavy, but when actually manufactured, the power supply box 100 is very heavy. ).

Further, in order to prevent the sheet roll 2 'from dropping when a power failure occurs while the sheet roll 2' is being adsorbed and conveyed by the vacuum lifter V '. The vacuum pump described above is used for the vacuum lifter V '.
Power box with built-in motor for driving vacuum pump, switching valve, etc.
In addition to the emergency power supply, an emergency power supply and an emergency power supply driven vacuum pump driven by the emergency power supply may be installed. In such a case, the weight of the rope is further increased. Was.

In order to eliminate these problems, ie,
In order to reduce the weight of the rope for raising and lowering the vacuum lifter V ', for example, as shown in FIG. 17 (Japanese Patent Publication No. 46-30050), a vacuum source is connected to the vacuum lifter.
The vacuum source and the vacuum lifter V 'are provided separately from each other without being mounted on V', and are connected by a hose H.

[0006]

However, in the apparatus shown in FIG. 17, every time the vacuum lifter V 'moves up and down, the hose H must be sequentially wound and unwound. If the hose H is taken up and rewound for a long period of time, the hose H may be broken halfway.

When the hose H is broken halfway, the suction force of the vacuum lifter V 'is reduced, and the vacuum lifter V' is reduced.
When the seat 2 'falls from V' and is dangerous, and the object to be lifted falls, the stacked and stored object to be lifted falls, or the object to be lifted itself is damaged, and the object to be lifted is dropped. However, there is a problem that the merchantability of the product is impaired.

In the case of simultaneously lifting a plurality of seats 2 ', a method of providing a plurality of suction surfaces on the lower surface of one vacuum lifter V' shown in FIGS. -Multiple lifters V 'are provided, and the same number of lifting devices are mounted on one carriage, and each of them is a vacuum lifter.
There is a method of providing V '.

In the former case, only one set of a vacuum pump, an emergency power supply and the like may be mounted on the vacuum lifter V '.
Since a plurality of seats 2 'having different heights cannot be adsorbed, there is a problem that they can be used only for specific applications.

Although the latter does not have the same problem as the former, the weight of the vacuum pump, the electric motor for driving the vacuum pump, the power supply box containing the switching valve, etc. is increased for each vacuum lifter V '.
In addition, in order to prepare for a power failure, the power failure processing device described in [0004] is also mounted for each vacuum lifter V ', which is very heavy.

An object of the present invention is to provide a vacuum suction lifting device and a vacuum suction lifting method which can solve the above problems.

[0012]

In order to achieve the above-mentioned object, a vacuum suction lifting device of the present invention comprises a carriage traveling on an upper beam, a vacuum pump mounted on the carriage, and a vacuum pump mounted on the carriage. A first vacuum chamber sucked by a pump and mounted on the carriage, a first connection passage communicating with the first vacuum chamber, and a first connection passage opening / closing opening / closing the first connection passage A vacuum lifter suspended from the carriage so as to be vertically movable and having a second vacuum chamber containing a gas having a pressure lower than the atmospheric pressure required for suction and having a lower portion as a suction surface; and To the vacuum chamber of No. 2,
A second connection passage connected to or not connected to the first connection passage, and a second connection passage opening / closing means for opening / closing the second connection passage are provided.

[0013] The vacuum suction lifting method of the present invention comprises:
A carriage that runs on a beam provided above, a vacuum pump mounted on the carriage, and driven by the same commercial power supply as a drive source of the carriage, and a first pump that is sucked by the vacuum pump and mounted on the carriage. Vacuum chamber, a first connection passage communicating with the first vacuum chamber, first connection passage opening / closing means for opening / closing the first connection passage, and a first connection passage opening / closing means which is suspended by the carriage and required for suction. A vacuum lifter having a second vacuum chamber containing a gas having a pressure lower than the atmospheric pressure and having a lower portion as an adsorption surface, and a lift motor driven by the commercial power supply to move the vacuum lifter up and down. Raising and lowering means, a second connection passage communicating with the second vacuum chamber, and connecting or disconnecting with the first connection passage, and a second connection passage opening / closing means for opening / closing the second connection passage And the vacuum The lifter is raised toward the carriage to connect the first connection passage and the second connection passage, and the first connection passage opening / closing means and the second connection passage opening / closing means make the second connection passage open and close. The first connection passage and the second connection passage are opened, and the first vacuum chamber and the second vacuum chamber are communicated via the first connection passage and the second connection passage. Evacuating the first vacuum chamber and the second vacuum chamber by a pump,
The connection between the first connection passage and the second connection passage is released, and the first connection passage and the second connection are opened by the first connection passage opening / closing means and the second connection passage opening / closing means. The passage is closed, the vacuum lifter is lowered so as to move away from the carriage side, the suction surface of the second vacuum chamber is brought into contact with the object to be lifted, and the vacuum in the second vacuum chamber The object to be lifted is adsorbed.

According to a third aspect of the present invention, there is provided the vacuum suction and lifting method according to the second aspect, wherein the object to be lifted is lifted after suction of the object to be lifted, and the first connection passage is connected to the second connection passage. And the first connection path.
Opening the first connection passage and the second connection passage by the connection passage opening and closing means and the second connection passage opening and closing means,
The first vacuum chamber and the second vacuum chamber are communicated via the first connection passage and the second connection passage, and the first vacuum chamber and the second vacuum chamber are connected by a vacuum pump. Maintaining the suction state of the object to be lifted by applying a vacuum,
It is added that the bogie runs on a beam.

According to a fourth aspect of the present invention, there is provided the vacuum suction lifting method according to the second aspect, wherein the suspended object is lifted after the object to be lifted is suctioned, and the commercial power supply is interrupted during the lifting process. In this case, the lifting operation of the object to be lifted is stopped, and the object to be lifted is lowered to return to the original position.

According to a fifth aspect of the present invention, there is provided the vacuum suction lifting method according to the second aspect, further comprising an emergency power supply and an emergency power supply driving vacuum pump driven by the emergency power supply. , After adsorption of the suspended object,
The object to be lifted is lifted, and the first connection passage and the second
And the first connection passage and the second connection passage are opened by the first connection passage opening and closing means and the second connection passage opening and closing means, and the first connection passage and the second connection passage are opened. The first vacuum chamber and the second vacuum chamber are communicated with each other via a second connection passage, and the first vacuum chamber and the second vacuum chamber are evacuated by a vacuum pump to adsorb the object to be lifted. While maintaining the state, the bogie runs on the beam, and in the course of running, when the commercial power source is cut off, the emergency power source drives the emergency power source driving vacuum pump, and the first vacuum chamber and the second In this case, the vacuum state of the vacuum chamber 2 is maintained.

Further, the vacuum suction lifting device of the present invention comprises:
A truck traveling on a beam provided above, a vacuum pump mounted on the truck, a first vacuum chamber sucked by the vacuum pump and mounted on the truck, and a first vacuum chamber mounted on the truck. A plurality of first connecting passages which communicate with each other, a plurality of first connecting passage opening / closing means for opening / closing the plurality of first connecting passages, and an air pressure required for suction, which is hung up and down on the truck so as to be freely movable. A plurality of vacuum lifters each containing a low-pressure gas and having a second vacuum chamber having a lower portion as an adsorption surface, communicating with the second vacuum chamber and connecting to or not connecting to the first connection passage; A plurality of second connection passages for connecting;
A plurality of second connection passage opening / closing means for opening and closing the plurality of second connection passages are provided.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vacuum suction lifting apparatus and a vacuum suction lifting method according to one embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 14, reference numeral 1 denotes a vacuum suction lifting device, and the vacuum suction lifting device 1 is used, for example, when storing articles in a warehouse S as shown in FIGS. The object to be lifted 2 conveyed by the conveyor C to the entrance of the warehouse S is sucked and lifted by the vacuum suction lifting device 1, and the bogie 3 and the beam 4 are moved to a predetermined position in a state where the object to be lifted 2 is lifted. Then, the lifted object 2 is lowered to a predetermined position, the suction state of the object 2 is released, and the object 2 is moved to a predetermined position in the warehouse S. In addition, the vacuum suction lifting device 1 is moved from the conveyor C to the warehouse S.
Although the case where the articles 2 are stored in the storage unit has been described, the present invention is not limited to this. For example, contrary to the above, the present invention can be similarly applied to the case where the articles 2 are carried out from the warehouse S by the conveyor C.

The object to be lifted 2 is, for example, as shown in FIG.
As shown in FIG. 2, paper or the like is wound in a roll shape. More specifically, a sheet having an outer diameter of 1 m to 3 m, a height of 0.5 m to 3 m, and a weight of about t to about 10 t is used. The seat roll has a tubular core 2a at the center.

As shown in FIGS. 2 and 3, the carriage 3 equipped with the vacuum suction lifting device 1 is connected to a traveling rail 5 mounted on a beam 4 provided above the warehouse S via wheels 6. The running girder 4 runs on a rail 8 provided on a building 7 via wheels 9.

The trolley 3 includes a vacuum pump 10 driven by a commercial power supply (for example, an AC power supply), an emergency power supply 11 (for example, a battery), an emergency power supply driven vacuum pump 12 driven by the emergency power supply 11, The first vacuum chamber 14, which is sucked by the vacuum pump 10 or the emergency vacuum pump 12, the hoisting drum 23, and the like are respectively mounted.

The vacuum in the first vacuum chamber 14 is suctioned and maintained by the vacuum pump 10, and the vacuum pump 10 and the truck 3
Are driven by a commercial power supply introduced into the warehouse S, for example, an AC power supply. The first vacuum chamber 14 has a first connection passage 14a communicating with the first vacuum chamber.
Is provided. The distal end of the first connection passage 14a is provided so as to face downward.

The first connection passage 14a is opened and closed by a first connection passage opening / closing means. The first connection passage opening / closing means is connected to the first connection passage 14a as shown in FIGS. 10 and 11, for example. The on-off valve 14b provided inside is mechanically or electrically controlled to open and close the first connection passage 14a.

When the first connection passage opening / closing means is mechanical, for example, as shown in FIGS. 10 and 11, the first connection passage 14a and a second connection passage 20a described later are sealed. The first connection passage 14a and the second connection passage 20a communicate with each other in a state where they are in contact with each other via the members 14i and 20i.

That is, as shown in FIG. 10, the first connection passage
An on-off valve 14b is provided to open and close the interior of 14a.
One end of the on-off valve 14b is firstly connected to an elastic member, for example, a spring 14c.
The opening 14d in the connection passage is closed. An elastic member, for example, a pin 14f held at a predetermined position by a spring 14e is provided at a position facing the spring 14c via the on-off valve 14b. The on-off valve 14b
Is rotatably supported by a shaft 14g, 14h is an O-ring, 14i
Is a seal member.

Then, as shown in FIG. 11, by bringing a second connection passage 20a, which will be described later, close to the first connection passage 14a, the front end of the second connection passage 20a pushes the rear end of the pin 14f, The tip of 14f acts so as to overcome the force of the spring 14c to rotate the opening / closing valve 14b to open the first connection passage opening 14d.

Further, when the AC power supply led into the warehouse S has a power failure for some reason, the power failure particularly occurs while the lifted object 2 is sucked and conveyed by the vacuum lifter V described later. And the suspended object 2 falls and is dangerous, and the laminated suspended object 2 is stacked with the fall of the suspended object 2, and the lifted object 2 may fall down or may be damaged due to a fall or the like. Is impaired.

In order to prevent this, the control means 200 shown in FIG. 12 allows the motor 24 to be braked at a low speed if the power failure occurs while the vacuum lifter V is moving up and down.
The vacuum lifter V is lowered through the pump 22 to return the object 2 to be lifted to its original position. If a power failure occurs while the truck 3 is running, the emergency vacuum pump 12 is turned on by the emergency power supply 11. When driven, the vacuum state in the first vacuum chamber 14 is maintained, and the suction state of the object 2 to be lifted by the vacuum lifter V is maintained.

That is, as shown in FIGS. 12 to 14, the control means 200 includes a power failure detection unit 201 for detecting whether or not a power failure has occurred, and a detection result of the power failure detection unit 201, and the emergency power supply 11 (for example,
Emergency power supply operation control unit 202 for operating battery-)
A lifting / lowering determining unit 203 for determining whether or not the vacuum lifter V is raised / lowered. If the result of the determination by the lifting / lowering determining unit 203 indicates that the vacuum lifter V is raised / lowered and a power failure occurs, the emergency power supply 11 ( For example, by operating the battery) to lower the vacuum lifter V, the vacuum lifter lowering control unit 204 and the lifting / lowering determining unit 203 determine that the vacuum lifter V is not raised or lowered (that is, the battery lifter V is not raised or lowered). When the vacuum lifter V is at the highest position and the first connection passage 14a and the second connection passage 20a are connected to each other (the power is cut off), the emergency power supply 11 drives the emergency vacuum pump 12. And an emergency vacuum pump drive control unit 205.

Therefore, while the vacuum lifter V adsorbs the object 2 to be lifted and moves up and down (ascends or descends) through the wire rope 22, the control means 200 controls the apparatus as follows (see FIG. 1). 12 and FIG. 13).

First, a power failure detection unit 201 detects whether or not a power failure has occurred (step S ₁ ). In the case of a power failure, the emergency power supply operation control unit 202 operates and activates the emergency power supply 11 (for example, a battery). (Step S ₂ ). At that time, power failure Vacu - Murifuta whether occurred during lifting of -V is performed by elevating the determination unit 203 (Step S _3).

If a power failure occurs during the lifting and lowering of the vacuum lifter V, the vacuum lifter lowering unit 204 lowers the vacuum lifter V (step S ₄ ).
When the power outage is not during the elevating of the vacuum lifter V, for example, when the vacuum lifter V is on the bogie 3 and the girder 4 is running or the dolly 3 is running on the girder 4, the emergency vacuum pump is used. The emergency vacuum pump 12 is driven by the emergency power supply 11 by the drive control unit 205 (step S ₅ ), and the first vacuum chamber 14 and the second vacuum chamber 20 are kept in a vacuum state, and the vacuum chamber is covered by the vacuum lifter V. The suction state of the lifting object 2 is maintained.

If a power failure occurs during the lifting and lowering of the vacuum lifter V, the vacuum lifter lowering control unit 204
, The vacuum lifter V is desirably lowered at a low speed through the wire rope 22 to return the object 2 to be lifted to the original position. I have to.

That is, the vacuum lifter V is raised and lowered by lifting means which is raised and lowered by a lifting motor. More specifically, for example, the vacuum lifter V is suspended on the carriage 3 so as to be able to move up and down. A wire rope 22 is hung on a pulley 21 mounted on the upper part of the muffler V. Then, one end of the wire rope 22 is fixed to the carriage 3 so that the other end of the wire rope 22 can be wound up by the hoisting drum 23 and the hoisting drum 23 is rotated in the forward and reverse directions. The vacuum lifter V is raised and lowered by the lifting motor 24.

The motor 24 is, for example, as shown in FIG.
When the rotation of the motor 24 is transmitted to the hoisting drum 23 via the belt B stretched between the motor side pulley 24a and the hoisting drum side pulley 23a, A brake 23b provided on the side surface of the hoisting drum 23 is brought into contact with the brake 23c, and is controlled so as to prevent the rotation of the hoisting drum 23 by the frictional force.

That is, the brake control of the motor 24 is performed by a detector 23e for detecting the rotation of the hoisting drum 23, and the detector 23e.
The brake 23b is moved in the rotation axis direction of the hoisting drum 23 to adjust the contact force (frictional force) between the brake 23c and the brake 23b on the basis of the detection result. Rotation at low speed (preferably at low speed)
And a brake control unit 23f for controlling the rotation of the hoisting drum 23.

If there is no power outage, the brake 23b
The spring (not shown) provided at the
And the brake 23c are separated from each other so as not to hinder the rotation of the hoisting drum 23.

After a power failure, the emergency power supply 11 activates the detector 23e and the brake control unit 23f, and the
The lift of the lifted object 2 is returned to its original position by controlling the vacuum lifter V to lower at a low speed through the pump 22 so as to loosen the brake of the brake 23b.

The brake control of the motor 24 is not limited to the above-described one, but may be any control which lowers the vacuum lifter V at a low speed. No. 294414, a motor with an electromagnetic brake,
Japanese Patent Application Laid-Open No. 5-229786 discloses a brake motor,
The present invention can be similarly applied by controlling a conventionally known motor such as a motor with a brake described in JP-A-63-279959 and a brake motor described in JP-A-6-57599.

As shown in FIGS. 3 to 9, the vacuum lifter V is provided with a second vacuum chamber 20 for storing gas at a pressure lower than the atmospheric pressure required for adsorption.
The lower part of the vacuum chamber 20 forms a suction surface. In the center of the lower surface of the second vacuum chamber 20, a centering plug having a substantially inverted conical shape is provided.
25 are provided. On the lower surface of the second vacuum chamber 20, a ring-shaped seal material 26 near the outer periphery and concentrically is provided.
However, a touch valve 27 is provided near the seal member 26, respectively. Lifted object 2 to be handled
When there are several outer diameters of the seal member 26, a plurality of seal members 26 are provided concentrically, and a plurality of touch valves 27 are provided accordingly.

As shown in FIGS. 8 and 9, the touch valve 27 is for holding or releasing the communication between the second vacuum chamber 20 and the hole 28. FIG. FIG. 9 shows a state in which the communication state between the second vacuum chamber 20 and the hole 28 is released.
The state where the communication between the object and the hole 28 is maintained, the vacuum in the second vacuum chamber 20 acts on the object to be lifted 2, and the object to be lifted 2 is attracted.

The second vacuum chamber 20 is provided with a second connection passage 20 a communicating with the second vacuum chamber 20.
The tip of the second connection passage 20a is provided so as to face upward.

The second connection passage 20a is opened and closed by a second connection passage opening / closing means. The second connection passage opening / closing means is connected to the second connection passage 20a as shown in FIGS. An on-off valve 20b provided inside is mechanically or electrically controlled to open and close the second connection passage 20a.

In the case where the second connection passage opening / closing means is mechanical, for example, as shown in FIGS. 10 and 11, the front end of the second connection passage 20a and the front end of the first connection passage 14a are closed. −
The first connection passage 14a and the second connection passage 20a are communicated with each other in a state where the first connection passage 14a and the second connection passage 20a are in contact with each other via the screw members 14i and 20i.

That is, as shown in FIG. 10, the second connection passage
An on-off valve 20b that opens and closes the inside of 20a is provided.
One end of the on-off valve 20b is connected to an elastic member, for example, a spring 20c.
The connection passage opening 20d is closed. An elastic member, for example, a pin 20f held at a predetermined position by a spring 20e is provided at a position facing the spring 20c via the on-off valve 20b. The on-off valve 20b
Is rotatably supported by a shaft 20g, 20h is an O-ring, 20i
Is a seal member.

Then, as shown in FIG. 11, by bringing the second connection passage 20a closer to the first connection passage 14a, the front end of the first connection passage 14a pushes the rear end of the pin 20f, and
The tip of 20f acts so as to overcome the force of the spring 20c to rotate the on-off valve 20b, and the opening 20d in the second connection passage is formed.
To open.

Therefore, in order to store the object 2 to be lifted conveyed by the conveyor C at the entrance of the warehouse S at a predetermined position in the warehouse S, first, as shown in FIGS. The first connection passage 14a and the second connection passage 20a are opened by connecting the first connection passage opening / closing means and the above-described second connection passage opening / closing means while connecting the first connection passage 14a and the second connection passage 20a, The first vacuum chamber 14 and the second vacuum chamber 20 communicate with each other via the first connection path 14a and the second connection path 20a, and the first vacuum chamber 14 and the second vacuum chamber 20 are connected by the vacuum pump 10. Vacuum.

Next, the beam 4 of the ceiling crane and the carriage 3 are moved to position the vacuum lifter V above the object 2 to be lifted on the conveyor C as shown in FIG.

Thereafter, as shown in FIGS. 5 and 6, when the hoisting drum 23 is rotated to lower the vacuum lifter V through the wire rope 22, the first connection passage 14a and the The connection with the second connection passage 20a is released, and the first
The first connection passage 14a and the second connection passage 20a are closed by the connection passage opening / closing means and the second connection passage opening / closing means described above, and the vacuum lifter is maintained while the second vacuum chamber 20 is kept in a vacuum state. −V is lowered so as to move away from the carriage 3 side, and so that the centering plug 25 enters the core 2 a of the object 2 to be lifted.

Then, as shown in FIGS. 7 to 9, the second
When the suction surface of the vacuum chamber 20 is in contact with the object 2 to be lifted, the vacuum lifter V stops and the touch valve 27 stops.
Is operated, the communication state between the second vacuum chamber 20 and the hole 28 is maintained, and the vacuum of the second vacuum chamber 20 acts on the object 2 to be lifted, so that the object 2 to be lifted is attracted.

After the object 2 to be lifted is adsorbed by the vacuum lifter V, the winding drum 23 is rotated in the opposite direction to that described above, and the vacuum lifter V is rotated via the wire rope 22.
To rise. The object 2 to be lifted is vacuum-adsorbed by the vacuum lifter V and the vacuum lifter V is connected to the wire.
While ascending through the rope 22, air leaks into the second vacuum chamber 20 through the object 2 to be lifted, but the amount is small, so no problem occurs.

After the vacuum lifter V rises, the vacuum
The lifter V stops at a predetermined position (for example, the state of FIG. 3), that is, a state where the first connection passage 14a and the second connection passage 20a are connected. In this state, the first
The first connection passage 14a and the second connection passage 20a are opened by the connection passage opening / closing means and the second connection passage opening / closing means described above, the vacuum pump 10 is operated, and the first vacuum chamber 14 and the second connection passage 20a are opened. The vacuum chamber 20 is maintained in a vacuum state.

Thereafter, while the object to be lifted 2 is being sucked and the beam 4 is traveling or the carriage 3 is traveling on the beam 4, the object to be lifted 2 is moved to the top of the storage position.

After the movement, the hoisting drum 23 is rotated to lower the vacuum lifter V via the wire rope 22. The object 2 to be lifted is lowered to a predetermined position by the vacuum lifter V. For example, the hole 28 is closed by a valve (not shown), the suction surface is communicated with the atmosphere, and the suction state of the vacuum lifter V and the object 2 to be lifted is checked. The object 2 to be lifted is released and stored at a predetermined position in the warehouse S.

When the vacuum lifter V adsorbs the object 2 to be lifted and moves up and down (ascends or descends) via the wire rope 22, if a power failure occurs, the emergency power supply is controlled by the control means 200. 11 relax the brake of motor 24,
Vacuum lifter via wire rope 22 at low speed
V is lowered to return the suspended object 2 to its original position. If a power failure occurs while the beam 4 is traveling or the truck 3 is traveling on the beam 4 while the suspended object 2 is being sucked (at this time, the vacuum lifter V is at the upper limit). The emergency vacuum pump 12 is driven by the emergency power supply 11 by control means (not shown), and the first vacuum chamber 14 and the second vacuum chamber 20 are maintained in a vacuum state. After the crane is manually moved to a predetermined position while the suspended object 2 is being sucked, the motor is moved.
The brake 24 is loosened, the vacuum lifter V is lowered via the wire rope 22, and the object 2 to be lifted is lowered to an appropriate position.

According to this embodiment, since the vacuum pump 10 and the emergency power source 11 are mounted on the carriage 3, the weight of the vacuum lifter V suspended on the carriage 3 can be reduced as much as possible. In addition, the first vacuum chamber 14 and the second vacuum chamber 20
This means that the hose connecting the first vacuum chamber 14 and the second vacuum chamber 20 every time the vacuum lifter V is moved up and down because the hose is not always connected by the conventional hose. There is no need to sequentially take up and rewind, and it is possible to prevent the object 2 to be lifted from dropping due to a decrease in the suction force due to breakage of the hose in the middle. Further, while the beam 4 is traveling while the object 2 to be lifted is adsorbed or the truck 3 is traveling on the beam 4, the first vacuum chamber 14 and the second vacuum chamber 20 are held in vacuum by the vacuum pump 10, -It is possible to prevent the lifting object 2 from dropping without lowering the suction force of the lifting object 2 due to the murifter-V. Also, in the process of lifting and lowering the suspended object 2 after the lifting of the suspended object 2, if the commercial power supply is interrupted, the lifting and lowering operation of the suspended object 2 is stopped, and the suspended object 2 is lowered to the original position. By returning the object, it is possible to prevent the suspended object from falling. When the commercial power supply is interrupted while the girder 4 is traveling or the bogie 3 is traveling on the girder 4 in a state in which the suspended object 2 is sucked, the emergency power supply 11 drives the emergency power supply drive vacuum pump 12, The vacuum state of the first vacuum chamber 14 and the second vacuum chamber 20 is maintained, and the suction force of the object 2 to be lifted by the vacuum lifter is prevented from lowering, so that the object to be lifted can be prevented from falling.

In the above embodiment, the vacuum
Since there is only one suction surface of the lifter V, a plurality of objects to be lifted 2 cannot be lifted at the same time, and the efficiency of the lifting operation cannot be improved. In order to simultaneously lift a plurality of objects 2 to be lifted, if only a plurality of suction surfaces are provided, if the height of the objects 2 (for example, seat rolls) to be sucked is different, the plurality of objects 2 to be lifted may be lifted. There is a problem that the lifting object 2 (for example, a seat roll) cannot be sucked at the same time, and furthermore, if a vacuum pump is provided on each suction surface, the load required for the equipment is increased and the cost cannot be reduced. Occurs.

The embodiment described below solves the above-mentioned problem. Note that the same parts as those in the above-described embodiment are denoted by the same reference numerals and described.

That is, as shown in FIG. 15, the carriage 3 includes a single vacuum pump 10 driven by a commercial power supply (for example, an AC power supply), an emergency power supply (for example, a battery) 11, and the emergency power supply. A single emergency power supply driven vacuum pump 12, driven by 11; a single first vacuum chamber 14, suctioned by vacuum pump 10 or emergency vacuum pump 12;
21 mags are mounted respectively.

The vacuum in the first vacuum chamber 14 is normally suctioned and maintained by the vacuum pump 10 as in the above-described embodiment, and the vacuum pump 10 and the cart 3 are guided into the warehouse S. It is designed to be driven by an AC power supply. The first vacuum chamber 14 is provided with a plurality of first connection passages 14a communicating with the first vacuum chamber 14.

Each of the first connection passages 14a is configured to open and close the first connection passage 14a by first connection passage opening / closing means. The first connection passage opening / closing means is, for example,
An on-off valve (not shown) provided in the first connection passage 14a is mechanically or electrically opened and closed. In addition,
When the first connection passage opening / closing means is mechanical, it is the same as that described in FIGS. 10 and 11 described above.

Similarly to the above-described embodiment, when the AC power supply is interrupted for some reason, the emergency power supply 11 (for example, a battery) is switched to the emergency power supply 11 (for example, a battery). 12 and 13, the brake of the motor 24 is loosened, the vacuum lifter V is lowered at a low speed through the wire rope 22, and the object to be lifted is lifted. The emergency vacuum pump 12 is driven by the emergency power source 11 when the power failure occurs while the vehicle 4 is running or the trolley 3 is running. The vacuum state is maintained, and the suction state of the object 2 to be lifted by the vacuum lifter V is maintained.

In addition, a plurality of carts (in this embodiment,
(2) vacuum lifters V are suspended so as to be movable up and down. And, in a plurality of vacuum lifters V,
Similarly to the above-described embodiment, a second vacuum chamber 20 is provided for accommodating a gas having a pressure lower than the atmospheric pressure required for adsorption, and a lower portion of the second vacuum chamber 20 forms an adsorption surface. . Second
A substantially inverted conical centering plug 25 is provided in the center of the lower surface of the vacuum chamber 20.

Each second vacuum chamber 20 is provided with a second connection passage 20 a communicating with the second vacuum chamber 20. Each of the second connection passages 20a is configured to open and close the second connection passage 20a by a second connection passage opening / closing means. The second connection passage opening / closing means is configured to mechanically or electrically open / close a not-shown opening / closing valve provided in the second connection passage 20a, for example. In the case where the second connection passage opening / closing means is mechanical, FIG.
It is similar to that described in FIG.

Therefore, in order to store a plurality of objects 2 to be lifted conveyed by the conveyor C to the entrance of the warehouse S at a predetermined position in the warehouse S, first, the first connection passage 14
a and the second connection passage 20a, and a plurality of first connection passages 14a and a plurality of second connection passages 20a by the first connection passage opening and closing means and the second connection passage opening and closing means described above. Is opened, the first vacuum chamber 14 and the plurality of second vacuum chambers 20 communicate with each other through the plurality of first connection paths 14a and the plurality of second connection paths 20a, and the first pump The vacuum chamber 14 and the plurality of second vacuum chambers 20 are evacuated.

Next, although not shown, the beam 4 of the ceiling crane and the carriage 3 are moved to position the vacuum lifter V above the plurality of objects 2 to be lifted on the conveyor C.

Thereafter, when the winding drum 23 is rotated to lower the vacuum lifter V via the wire rope 22, the plurality of first connection passages 14a and the plurality of second connection passages 14a are formed.
The connection with the second connection passage 20a is released, and the first connection passages 14a and the second connection passages 20a are closed by the first connection passage opening / closing means and the second connection passage opening / closing means. The second vacuum chamber 20 keeps the vacuum state while keeping a plurality of vacuum lifters V away from the truck 3 side, and a plurality of centering plugs 25 enter the cores 2a of the plurality of objects 2 to be lifted. Going down.

Then, with the suction surface of the second vacuum chamber 20 in contact with the object 2 to be lifted, the vacuum lifters V are stopped and the touch valve 27 is operated. Then, the communication state between the second vacuum chamber 20 and the hole 28 is maintained, and the vacuum of the second vacuum chamber 20 acts on the plurality of objects 2 to be lifted, so that the plurality of objects 2 to be lifted are attracted.

While the plurality of objects 2 to be lifted are attracted, the winding drum 23 is rotated in the reverse
The plurality of vacuum lifters V are raised via the ropes 22 and stopped at predetermined positions. Thereafter, with the plurality of suspended objects 2 being sucked, the beam 4 and the carriage 3 are moved to move the plurality of suspended objects 2 above the storage position.

After the movement, the winding drum 23 is rotated to lower the plurality of vacuum lifters V via the wire rope 22. The plurality of lifted objects 2 are moved to predetermined positions by the plurality of vacuum lifters V, for example, the holes 28 are closed by valves (not shown), the suction surface is communicated with the atmosphere, and the plurality of vacuum lifters V and the plurality of The suction state of the suspended object 2 is released, and the plurality of suspended objects 2 are stored at predetermined positions in the warehouse S.

According to this embodiment, since a plurality of suction surfaces are provided, a plurality of objects to be lifted 2 can be lifted at the same time, and the efficiency of the lifting operation can be improved.
Also, to share the vacuum pump 10 and the emergency power supply 11,
The load on the equipment due to the efficiency of the lifting operation can be reduced, and the cost can be reduced. Also,
Even when the height of the lifted object 2 (for example, a seat roll) to be attracted is different, a plurality of lifting objects 2 (for example, for example, a lift) for raising and lowering the vacuum lifter V are separately provided. (Control) can be simultaneously adsorbed.

In this embodiment, the lifting means is a hoisting drum.
The vacuum lifters V, V are raised and lowered via wire ropes 22, 22 which are rotated by rotating the 23, 23.

[0074]

According to the first aspect of the present invention, since the vacuum pump is mounted on the carriage, the weight of the vacuum lifter suspended from the carriage can be reduced as much as possible. Since the vacuum chamber and the second vacuum chamber are not always connected by a hose as in the prior art, each time the vacuum lifter is moved up and down, the first vacuum chamber and the second vacuum chamber are connected. It is not necessary to sequentially wind and rewind the hose to be connected, and it is possible to prevent the object to be lifted from dropping due to a decrease in suction force due to breakage of the hose halfway.

According to the second aspect of the present invention, since the vacuum pump is mounted on the cart, the weight of the vacuum lifter suspended from the cart can be reduced as much as possible. Since the vacuum chamber and the second vacuum chamber are not always connected by a hose as in the prior art, each time the vacuum lifter is moved up and down, the first vacuum chamber and the second vacuum chamber are connected. It is not necessary to take up and rewind the hose to be connected one by one.
The lifting object can be prevented from falling.

According to the third aspect of the present invention, in addition to the effects of the second aspect of the present invention, in addition to the vacuum pump, the vacuum pump is operated while the object to be lifted is being sucked but the vehicle is running or the bogie is running. As a result, the first vacuum chamber and the second vacuum chamber are maintained in a vacuum, so that the suction force of the object to be lifted by the vacuum lifter does not decrease and the drop of the lifting object can be prevented.

Further, when a power failure occurs in the process of lifting and lowering the suspended object, if the suspended object is held as it is, if the power failure extends for a long time, the air passing through the suspended object will be The amount of leakage increases, the suction force drops significantly, and the object to be lifted falls and is dangerous.If the object to be lifted falls, the stacked and stored objects to be dropped fall down or the object to be lifted itself is damaged. Is generated, which impairs the merchantability of the object to be lifted. However, according to the invention described in claim 4, in addition to the effect of the invention described in claim 2, the object to be lifted is lifted and lowered after suction of the object to be lifted. In the process of powering down, if the commercial power supply is interrupted, the lifting / lowering operation of the suspended object is stopped, and the suspended object is lowered to return to the original position. It is possible to prevent.

According to the fifth aspect of the present invention, in addition to the effects of the second aspect of the present invention, in addition to the fact that the girder is in a state in which the object to be lifted is adsorbed but is running or on a bogie, When the power supply is interrupted, the emergency power supply drives the emergency power supply driven vacuum pump, and the first vacuum chamber and the second
The vacuum state of the vacuum chamber is maintained, and the suction force of the object to be lifted by the vacuum lifter is prevented from lowering, so that the object to be lifted can be prevented from falling.

According to the sixth aspect of the present invention, since the vacuum pump is mounted on the cart, the weight of the vacuum lifter suspended from the cart can be reduced as much as possible. Since the vacuum chamber and the second vacuum chamber are not always connected by a hose as in the prior art, each time the vacuum lifter is moved up and down, the first vacuum chamber and the second vacuum chamber are connected. It is not necessary to take up and rewind the hose to be connected one by one.
It is possible to prevent the object to be lifted from dropping, and since it has a plurality of suction surfaces, a plurality of objects to be lifted can be lifted at the same time. Since the pump is shared, the load on the equipment due to the efficiency of the lifting operation can be reduced, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a use state of a vacuum suction lifting device for performing a vacuum suction lifting method according to one embodiment of the present invention.

FIG. 2 is a schematic side view of the vacuum suction hoisting apparatus of FIG. 1 during the lowering of the vacuum lifter.

FIG. 3 is a schematic side sectional view showing a state in which a vacuum lifter of the vacuum suction lifting device of FIG. 1 is mounted on a truck side.

FIG. 4 is a schematic sectional view taken along line XX of FIG. 3;

FIG. 5 is a schematic side view showing a state where the vacuum lifter of the vacuum suction lifting apparatus of FIG. 1 is being lowered.

FIG. 6 is a schematic side view showing a state where the vacuum lifter of the vacuum suction lifting device of FIG. 1 is lowered and approaches the object to be lifted.

FIG. 7 is a schematic side view showing a state where the vacuum lifter of the vacuum suction lifting device of FIG. 1 is lowered and the vacuum lifter is in contact with the object to be lifted.

FIG. 8 is a schematic partially enlarged sectional view showing a part of FIG. 6 in an enlarged manner.

FIG. 9 is a schematic partially enlarged sectional view showing a part of FIG. 7 in an enlarged manner.

FIG. 10 is a schematic cross-sectional view of a state before the first connection passage and the second connection passage are connected.

FIG. 11 is a schematic sectional view showing a state where the first connection passage and the second connection passage are connected.

FIG. 12 is a block diagram of a control unit.

FIG. 13 is a flowchart showing a flow of control by the control means when a commercial power supply is interrupted.

FIG. 14 is an explanatory diagram illustrating control of a vacuum lifter.

FIG. 15 is a schematic side view showing a vacuum suction lifting apparatus for performing a vacuum suction lifting method according to another embodiment of the present invention.

FIG. 16 is a schematic side view showing a conventional vacuum suction lifting device.

FIG. 17 is a schematic side view showing a conventional vacuum suction lifting device different from the vacuum suction lifting device shown in FIG. 16;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum suction lifting apparatus 3 Dolly 10 Vacuum pump 14 First vacuum chamber 20 Second vacuum chamber V Vacuum lifter

Claims (6)

[Claims] A trolley that runs on a spar provided above, a vacuum pump mounted on the trolley, a first vacuum chamber sucked by the vacuum pump and mounted on the trolley; A first connection passage communicating with the first vacuum chamber, a first connection passage opening / closing means for opening / closing the first connection passage, and being hung up and down on the truck so as to be lower than the atmospheric pressure required for suction. A vacuum lifter having a second vacuum chamber for storing a gas at a pressure and having a lower portion as an adsorption surface, and a second lifter communicating with the second vacuum chamber and connected to or disconnected from the first connection passage. 2. A vacuum suction lifting device comprising: a second connection passage; and a second connection passage opening / closing means for opening and closing the second connection passage. 2. A bogie that runs on a beam provided above, a vacuum pump mounted on the bogie, and driven by the same commercial power supply as a driving source of the bogie, A first vacuum chamber mounted, a first connection passage communicating with the first vacuum chamber, first connection passage opening / closing means for opening / closing the first connection passage, and a first suspension passage suspended by the cart. A vacuum lifter containing a gas having a pressure lower than the atmospheric pressure required for suction and having a second vacuum chamber having a lower portion as a suction surface; and a lift for driving the vacuum lifter by the commercial power supply. Elevating means for elevating and lowering by a motor, a second connection passage communicating with the second vacuum chamber and connected to or disconnected from the first connection passage, and a second opening and closing the second connection passage Connection passage opening and closing means Raising the vacuum lifter toward the carriage, connecting the first connection passage and the second connection passage, and opening and closing the first connection passage and the second connection passage. The first connection passage and the second connection passage are opened by opening / closing means, and the first vacuum chamber and the second vacuum chamber are connected via the first connection passage and the second connection passage. The first vacuum chamber and the second vacuum chamber are evacuated by the vacuum pump, and then the connection between the first connection passage and the second connection passage is released. The first connection passage and the second connection passage are closed by the connection passage opening / closing means and the second connection passage opening / closing means, and the vacuum lifter is lowered so as to move away from the bogie side; Suspended suction surface of vacuum chamber 2 Brought into contact with the raised object, the method lifting the vacuum suction, characterized in that adsorbs the object to be lifted object by vacuum of the second vacuum chamber. 3. After the object to be lifted is adsorbed, the object to be lifted is raised to connect the first connection passage and the second connection passage, and the first connection passage opening / closing means and the second connection passage opening / closing. The first connection passage and the second connection passage are opened by means, and the first vacuum chamber and the second vacuum chamber are communicated via the first connection passage and the second connection passage. 3. The truck according to claim 2, wherein the first vacuum chamber and the second vacuum chamber are evacuated by a vacuum pump to maintain the suction state of the object to be lifted and travel on a bogie. Vacuum suction lifting method. 4. After the object to be lifted is adsorbed, the object to be lifted is lifted. If a commercial power supply is interrupted during the lifting process, the lifting operation of the object to be lifted is stopped and the object to be lifted is lowered. 3. The vacuum suction lifting method according to claim 2, wherein the method is returned to an original position. 5. An emergency power supply and an emergency power supply driven vacuum pump driven by the emergency power supply are mounted on the truck, and after the object to be lifted is adsorbed, the object to be lifted is raised, and the first connection passage is connected to the first connection passage. The first connection passage and the second connection passage are opened by the first connection passage opening / closing means and the second connection passage opening / closing means while being connected to the second connection passage, and the first connection passage and the second connection passage are opened. The first vacuum chamber and the second vacuum chamber are communicated with each other through the second connection passage, and the first vacuum chamber and the second vacuum chamber are evacuated by a vacuum pump, and the object to be lifted is In the traveling process, when the commercial power supply is cut off, the emergency power supply drives the emergency power supply vacuum pump, and the first vacuum chamber and Of the second vacuum chamber Vacuum suction lifting method according to claim 2, characterized in that to hold the empty state. 6. A truck running on a beam provided above, a vacuum pump mounted on the truck, a first vacuum chamber sucked by the vacuum pump and mounted on the truck. A plurality of first connection passages communicating with one vacuum chamber; a plurality of first connection passage opening / closing means for opening / closing the plurality of first connection passages; A plurality of vacuum lifters having a second vacuum chamber for storing a gas having a pressure lower than the required atmospheric pressure and having a lower portion as an adsorption surface.
A plurality of second connection passages communicating with the second vacuum chamber and connected to or disconnected from the first connection passage; and a plurality of second connections opening and closing the plurality of second connection passages. A vacuum suction lifting device comprising a passage opening / closing means.