JP2553376Y2 - Article lifting conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an article lifting and conveying apparatus capable of lifting various articles and conveying the articles to desired positions.

[Conventional technology]

A typical example of this type of transfer device is a first movable frame that can reciprocate in a direction X in a direction near a ceiling along a fixed frame as seen in steelworks, various factories, and the like. A second movable frame capable of reciprocating in a direction Y perpendicular to the X direction along a rail on the movable frame; a winch mounted on the second movable frame; There is a so-called overhead traveling crane or a transport device similar to this, in which an article suspender is suspended.

This type of apparatus is capable of lifting various articles placed on a floor or the like, transporting the articles to a desired position, and lowering the articles there, so that the articles can be handled over a wide space.

[Problems to be solved by the invention]

However, since the article suspender is hung on the wire, the swing of the suspender is large, and particularly when the article is mounted on the suspender, the suspender is accurately placed at the article position as quickly as possible. It took human labor to do so. Even if the hanger itself can automatically grab and scoop the articles, the hanger swings, so that manual positioning is still required for quick positioning.

In order to solve such a problem and achieve automation and labor saving, instead of the winch in the conventional transport device, a stiff and extendable cylinder device is suspended from the second movable frame, and a hanging member is supported at the lower end thereof. Although there is a proposal, the mounting of such a heavy cylinder device causes an excessive inertial force to act on the first and second movable frames when the frames are started and stopped. It must be manufactured firmly, and there is a problem that the manufacturing cost of the whole apparatus increases accordingly.

Also, as disclosed in Japanese Patent Application Laid-Open No. 60-122,692, cylinders having different diameters are sequentially fitted and made expandable and contractable, and each adjacent cylinder is supported on the inner surface of the lower portion of the larger diameter cylinder. A roller is provided so that it can roll on the outer surface of the smaller-diameter cylinder, and a support roller is provided on the outer surface of the upper portion of the smaller-diameter cylinder to roll it onto the inner surface of the larger-diameter cylinder. And a stopper device for preventing the small-diameter cylinder from falling off from the large-diameter cylinder separately from these support rollers and a stopper device for preventing the small-diameter cylinder from penetrating from the upper part of the large-diameter cylinder when ascending. There is also a device in which a separately provided telescopic cylinder device is suspended from the second movable frame, and a hanging member is supported at the lower end thereof.

However, in this article lifting device, a support roller is provided on each adjacent cylinder having a different diameter for stabilization of the cylinder device, and further, a stopper device is provided separately therefrom, which is simplified. In fact, the structure of the telescopic cylinder device, which should be configured with less trouble, becomes extremely complicated,
Therefore, failures are likely to occur, and the manufacturing cost is high.

In this regard, JP-A-50-48647 discloses JP-A-60-12269.
In the telescopic cylinder device taught by Japanese Patent Publication No. 2 (1994), a projection provided on the cylinder is employed in place of the support roller, and the projection also serves as a retaining member for the small-diameter cylinder from the large-diameter cylinder. Teaches a simplified telescopic cylinder device for article transport.

However, Japanese Patent Application Laid-Open Nos.
48647 publication teaches the telescopic cylinder device, even if it can be lighter than the above-mentioned heavy telescopic cylinder device, it still has to be of considerable weight,
The inertia force is still considerable, and in this regard, it is liable to break down or break at the start and stop of the movement of the telescopic cylinder device, which is dangerous.

In addition, there is an idea that a simple rigid column is hung from the second movable frame, and an elevating hanging tool is provided on this column. However, even in this case, there is still a problem of inertia force, and the hung column is There is a problem that the hanger cannot be freely moved to a desired position because it is in the way.

Thus, the present invention utilizes a conventional overhead traveling crane using a winch or a conventional transporting device similar thereto, and can be manufactured at a low cost with a simple structure, and the article hanging device can be quickly moved to a desired position without manual operation. It is an object of the present invention to provide an article lifting and conveying device that can be accurately and safely arranged.

[Means for solving the problem]

In order to solve the above-mentioned problem, the present invention provides a first movable frame which can reciprocate in one direction X along a fixed rail, and a first movable frame along a rail on the first movable frame in a direction Y perpendicular to the direction X. A reciprocally movable second movable frame;
A winch mounted on a movable frame, a pulley disposed below the second movable frame, having a pulley suspended by a wire from the winch, and a lifting frame capable of supporting an article suspending device; (2) An article lifting / conveying device including a movable frame and a telescopic rod having a lower end connected to the elevating frame such that relative rotation in the X and Y directions is regulated.

In the article lifting and conveying apparatus, the extendable rod is configured by sequentially fitting a plurality of cylinders having different diameters so as to be able to enter and exit sequentially in the order of size. The cylindrical body has a projection inside the lower end part which can abut on the outer surface of the smaller diameter cylindrical body and can slide up and down relatively, and the smaller diameter cylindrical body has a larger diameter outside the upper end part. A projection that can engage with the projection of the cylinder and that can relatively slide up and down by contacting the inner surface of the cylinder with the larger diameter; Each of the cylindrical bodies except at least the cylindrical body having the largest diameter has a stopper on the inner side of the upper end where the outer protruding portion at the upper end of the cylindrical body having a smaller diameter by one step comes into contact.

Further, the regulation of the relative rotation of the telescopic rod in the X and Y directions with respect to the second movable frame and the elevating frame is performed by moving the upper end of the rod to the second movable frame in one of the X and Y directions. The second movable frame is sandwiched between a pair of shock-absorbing means provided in the other direction, and the lower end of the rod is fixed to the lifting frame. It is done in.

As such a buffering means, a means utilizing a spring, a means utilizing a shock absorber, and the like can be considered.

[Action]

According to the apparatus of the present invention, an appropriate article suspender according to the article to be handled is mounted on the elevating frame in advance, and if necessary, the first movable frame is moved in the X direction along the fixed rail,
The second movable frame is moved by a predetermined amount in the Y direction along the rail on the first movable frame, and thereby the article hanging device is arranged at a desired position.

In the movement of the first and second movable frames, that is, the movement of the elevating frame and the article hanger attached thereto, the operation of the winch on the second movable frame raises or lowers the elevating frame to a height that does not hinder the movement. Let go down. When the elevating frame is moved up and down, the telescopic rod connecting the second movable frame and the elevating frame expands and contracts by a required amount. When the article hanger has been placed at the desired position, the elevating frame is moved up and down as necessary at that position to set its height position, and the hanger holds the article.

Next, the lifting frame and the hanging device holding the article are raised or lowered to a height that does not hinder the article movement by the winch operation, and then the first and / or second movable frame is run to move the article to a predetermined position. To the position, and further adjust the height position of the hanging tool as needed to lower the article. Thereafter, the above operation is repeated.

During the operation, the lower end inner projection of the larger cylinder of the adjacent cylinders in the telescopic rod is in contact with the inner surface of the smaller cylinder, and the upper end outer projection of the smaller cylinder. Because the part is in contact with the inner surface of the larger cylinder,
Thereby, the bending of the entire rod is restricted, and the upper end of the rod is connected to the second movable frame, and the lower end is connected to the lifting frame, so as to restrict the relative rotation in the X and Y directions. Therefore, the first and second movable frames have less runout, and the elevating frame and the suspender can be quickly set at the predetermined positions.

In addition, the relative rotation of the upper end of the telescopic rod with respect to the second movable frame is restricted by a rod supported by a shaft in one of the X and Y directions, and a buffer that elastically restricts the rotation of the rod around the shaft. Since the movement is performed by the means, the rod can be safely disposed at a predetermined position while absorbing the inertial force accompanying the start and stop of the movement of the telescopic rod at least by the buffer means.

Also, of the cylindrical body that moves up and down for the expansion and contraction of the telescopic rod,
When the smaller one in each adjacent cylinder descends,
The outer projection of the upper end of the cylindrical body is engaged with the inner projection of the lower end of the large one to prevent the stopper from coming off. The outer projection abuts against the inner stopper at the upper end of the larger cylinder to push the larger cylinder into a larger cylinder to shrink it.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a front view of the whole, and FIG. 2 shows a side surface of a second movable frame and components attached thereto.

The illustrated article lifting and conveying apparatus includes a first movable frame 1 and a second movable frame 2 mounted thereon.

The first movable frame extends in one direction Y, and has wheels 11 at both ends. The wheels are mounted on a pair of fixed rails 12, and this configuration allows the first frame 1 to reciprocate in the X direction perpendicular to the Y direction.

On the first movable frame 1, driving means including an electric motor (not shown) for rotating and driving at least one of the wheels 11, a chain transmission device, and the like are mounted, and the driving means is mounted on an end of the frame 1. It is configured to be controlled from the chamber 14.

The second movable frame 2 has wheels 21 on both sides thereof, and the wheels are mounted on a pair of rails 13 on the first movable frame 1, so that the second movable frame 2 is moved along the rail 13 in the Y direction. You can travel back and forth.

An electric motor 22 is mounted on the second movable frame 2, and the driving force of the motor is transmitted to a rotatable shaft 24 via a transmission 23, and the wheels 21 fixed to both ends of the shaft are driven to rotate. Is done.

The on / off and forward / reverse rotation of the motor 22 are controlled from the cab 14.

A winch 3 is further mounted on the second movable frame 2. The winch 3 includes a pair of drums 31 rotatably supported on the frame 2, an electric motor 32, and a transmission 33 (see FIG. 1) for transmitting the driving force of the motor to the shaft of the drum 31. It includes a wire 34 wound around and hanging from the drum 31.

The wire 31 is drawn out of the drum 31 and lowered, or the wire 34 is wound on the drum 31 and raised.
The control of the on / off and forward / reverse rotation of the motor 32 for rotating forward / backward is performed from the cab 14.

The first movable frame 1, the second movable frame 2 mounted thereon, the winch 3 on the second movable frame, and the means for controlling these operations are already used in steelworks and various factories. A known, so-called overhead traveling crane or similar transport device with a main cross beam frame, a winch carriage thereon, a winch on the carriage and a ceiling that controls their operation need only have substantially the same configuration, in other words, The device of this embodiment is obtained by partially improving a transport device such as an overhead traveling crane that is already provided,
Alternatively, it can be manufactured at low cost using such a transport device configuration.

An elevating frame 4 is disposed below the second movable frame 2, and a pair of moving pulleys 41 are rotatably supported at both ends of the elevating frame 4. A pair of wires 34 dropped from each drum 31 of the winch is wound around these moving sheaves, and the lifting frame 4 is suspended via the moving sheaves.

An extensible rod 5 is fitted on each pair of wires 34.

As shown in FIG. 3, each of the rods 5 is formed by sequentially fitting a plurality of cylindrical bodies having different cross-sectional squares with different diameters in order of size so as to freely enter and exit.

The cylindrical body having a larger diameter in each adjacent cylindrical body (hereinafter referred to as “outer cylindrical body”) is provided with a ring-shaped projection 51 having a large thickness and a slight vertical length inside the lower end thereof. In addition, the protrusion 51 comes into contact with the outer surface 52 of the smaller-diameter cylindrical body (hereinafter, referred to as an “inner cylindrical body”) with almost no gap, and can slide up and down relative to the inner cylindrical body. .

Further, in each of the adjacent cylinders, the inner cylinder has a ring-shaped projection 53 outside the upper end thereof, and the projection 53 can abut on the inner surface 54 of the outer cylinder to slide up and down. Further, a ring-shaped stopper 55 is formed inside the upper end of the inner cylinder.

The upper end of a cylindrical body 56 (see FIG. 2) having the largest outer diameter among these cylindrical bodies is connected to the second movable frame 2 as shown in detail in FIG.

That is, a U-shaped hanger 61 is provided at the upper end of the largest-diameter cylindrical body 56.
Is fixed, and the hanger is supported by a Y-direction shaft rod 62 so as to be rotatable in the X direction. The shaft 62 is supported by a pair of support arms 63 suspended from the second movable frame 2.
It is supported by Cylindrical body in X direction from both sides of hanger 61
66 are protruding, and each cylinder has a support arm facing it
A cylindrical spring 65 extending from 63 is freely fitted in and out of the cylinder 65. A coil spring 67 is provided in each of the pair of cylindrical bodies 65 and 66. These coil springs 67 elastically regulate the rotation of the rod 5 in the X direction. On the other hand, the shaft 62 restricts the rotation of the rod 5 in the Y direction.

The cylindrical body 57 having the minimum diameter of the rod 5 (see FIG. 3) is externally fitted to the moving pulley 41 on the lifting frame 4 and has a lower end fixed to the lifting frame 4. Thus frame 4
Is connected to the rod 5 so that it cannot rotate relative to the rod 5 in the X and Y directions.

In this example, the lifting frame 4 is configured so that the coil lifter 7 can be attached and detached.

That is, as shown in FIG. 2, the lower surface of the lifting frame 4 has a swing member 40 on which a coil lifter can be attached and detached.
The turning member 40 is connected to a motor 42 on the frame 4.
It is configured to be able to turn in the forward and reverse directions via a transmission (not shown). The pivoting member 40 has a twist lock mechanism (not shown) which is known per se. The coil lifter 7 engages with the pivoting member by inserting an engagement portion at the upper end thereof into a hole of the lock mechanism and turning in one direction. And can be pulled out by turning in the opposite direction.

The coil lifter 7 has a configuration known per se, and includes a pair of claws 72 that can approach and separate from each other on a main frame 71 having a portion that engages with the turning member 40 of the elevating frame. The pawls 72 can be moved toward and away from each other by a motor 73 (see FIG. 1) on the main frame via transmission means (not shown). Each claw 72 has its lower end bent inward,
The bent portion is inserted into the center hole 81 of the coil 8 wound with a thin metal plate, so that the coil can be lifted.

The operation of the motor 42 on the lifting frame 4 and the motor 73 on the coil lifter 7 can also be controlled from the cab 14. According to the article lifting and conveying apparatus described above, the first movable frame 1 can be moved in the X direction along the fixed rail 12 and the second movable frame 2 can be moved in the Y direction along the rail 13 on the first movable frame, as necessary. The coil lifter 7 can be arranged at a predetermined position by traveling a predetermined amount. First and second movable frames 1, 2
When the coil lifter 7 is moved, the lift frame 4 is raised or lowered by operating the winch 3 on the second movable frame 2 to a height that does not hinder the movement. Elevating frame 4 and coil lifter 7
Is raised by winding the wire 34 around the drum 31 of the winch 3, and the lowering of the frame 4 and the lifter 7 is performed by drawing out the wire 34 from the drum 31 and lowering it. When the lifting frame 4 moves up and down, the telescopic rod 5 expands and contracts by a required amount.

When the coil lifter 7 has been arranged at the desired position, the lifting frame 4 is further raised and lowered at that position as necessary to determine the final height position of the coil lifter. Thereafter, the claw 72 of the lifter is inserted into the center hole 81 of the coil 8. I do. Subsequently, the lifting frame 4 and the lifter 7 are moved to a height that does not hinder the movement of the coil 8 by operating the winch 3, and the first
The coil is moved to a predetermined position by moving the movable frame 1 and / or the second movable frame 2. Then, the lifter 7 is moved to a predetermined height by operating the winch 3, the coil is lowered to a position where the coil 8 is to be placed, and the lifter claw 72 is pulled out from the coil hole 81.

After the coil 8 has been lowered to a predetermined position in this manner, the next coil 8 can be appropriately moved by the same operation as described above.

In the operation of moving the coil, the inner protruding portion 51 at the lower end of the outer cylinder among the adjacent cylinders of the telescopic rod 5 is almost in contact with the outer surface 52 of the inner cylinder and the upper end of the inner cylinder. The outer projection 53 is in contact with the inner surface 54 of the outer cylinder,
Thereby, the bending of the entire rod 5 is restricted, and the upper end of the rod 5 is connected to the second movable frame 2 so as to restrict the rotation in the X and Y directions as shown in FIG. At the same time, since the lower end of the rod 5 is connected to the elevating frame 4 so as to regulate the relative rotation in the X and Y directions, the movement of the first frame 1 and the second frame 2 is started and stopped. In addition, the swing of the elevating frame 4 is small, and the coil lifter 7 can be quickly arranged at a predetermined position without requiring any manpower.

The inertial force of the portion below the rod 5 when the first movable frame 1 starts or stops moving in the X direction can be absorbed by a pair of springs 66 (see FIG. 4) that elastically clamp the upper end of the rod 5. Therefore, there is an advantage that the portion below the rod 5 can be moved quickly and safely in the X direction, and the coil lifter 6 can be quickly and safely arranged at a desired position as a whole.

When the inner cylinder of each adjacent cylinder among the cylinders that move up and down for the expansion and contraction of the extensible rod 5 descends, the outer protrusion 53 at the upper end of the inner cylinder becomes the lower end of the outer cylinder. Since it is possible to engage with the upper surface of the inner protruding portion 51, it is possible to prevent each adjacent cylinder from coming off.

Further, when the inner cylindrical body in each adjacent cylindrical body rises when the lifting frame 4 is raised, the protrusion 53 on the upper end outside contacts the stopper 55 inside the upper end of the outer cylindrical body and pushes it up. As the frame 4 is raised, the rod 5 can be gradually contracted from the lower cylinder.

The embodiment described above can be manufactured at a low cost because it can be manufactured by using a main part configuration of a conventionally known overhead traveling crane or a similar transport device, and furthermore, the coil lifter 7 has extremely little runout. In this state, it is possible to quickly and safely arrange at a desired position while absorbing the inertial force.

The present invention is not limited to the above embodiment, but can be implemented in various other modes.

For example, according to the above-described embodiment, the upper end of the telescopic rod 5 is rotatably supported by the movable frame 2 and is sandwiched by a pair of springs 66 so that the inertia force in the X direction of the portion below the rod 5 is reduced. Although it is configured to be absorbed, it may be configured to be able to absorb the inertial force in the Y direction by similar means. Further, the cab 14 in the above embodiment is not always necessary, and instead, a suitable control unit may be provided at a suitable place.

Although the apparatus of the embodiment supports the coil lifter, another suitable article suspending tool corresponding to the article to be handled may be mounted on the lifting frame 4 instead of the coil lifter. In this case, the device can be used in place of a stacker crane conventionally used in a three-dimensional storage warehouse, as well as various warehouses,
It can be used for automatic article movement processing in factories, quay yards, and the like.

[Effect of the invention]

As described above, according to the present invention, a conventional overhead traveling crane using a winch or a similar conventional transporting device can be used, and can be manufactured with a simple structure at a low cost.
It is possible to provide an article lifting and transporting apparatus that can quickly, accurately, and safely place an article hanging tool at a desired position without manual intervention.

In particular, in each adjacent cylindrical body of the telescopic rod, without using a complicated structure as a means of stabilizing the rod, a protrusion that can relatively slide up and down by contacting the outer surface of the smaller-diameter cylindrical body is provided. Provided on the inside of the lower end of the larger diameter cylinder, and provided on the outside of the upper end of the smaller diameter cylinder abutment against the inner surface of the larger diameter cylinder so that it can slide up and down relatively. And, these projections also serve as a stopper device for preventing the smaller-diameter cylindrical body from falling off from the larger-diameter cylindrical body, and furthermore, the upper-side outer projection of the smaller-diameter cylindrical body. When the rod is contracted, it can be used as a member that comes into contact with and pushes up the stopper at the upper end of the one-stage large-diameter cylindrical body. Therefore, there is an advantage that the overall structure is extremely simplified and provided at low cost.

Further, the relative rotation of the telescopic rod in the X direction and the Y direction with respect to the second movable frame and the elevating frame is restricted, and the upper end of the rod is attached to the second movable frame by a shaft rod in one of the X and Y directions. This is performed by rotatably supporting the rod in the other direction, sandwiching the second movable frame with a pair of shock-absorbing means disposed in the other direction, and fixing the lower end of the rod to the lifting frame. Therefore, the rotation can be controlled with a simple structure, and the upper and lower ends of the rod, as well as the middle part and either the upper or lower end, are restricted in the X and Y directions. Is reliably performed. In addition, while the inertial force accompanying the start and stop of the movement of the telescopic rod is absorbed at least by the buffering means, the rod can be disposed at a predetermined position more safely.

[Brief description of the drawings]

1 shows an embodiment of the present invention, FIG. 1 is a front view of the whole, FIG. 2 is a side view of a second movable frame and parts attached thereto, and FIG. 3 is a sectional view of a telescopic rod. , Fourth
The figure is an explanatory view of the connection state between the telescopic rod and the second movable frame. DESCRIPTION OF SYMBOLS 1 ... 1st movable frame 12 ... Fixed rail 2 ... 2nd movable frame 3 ... Winch 34 ... Wire 4 ... Elevating frame 41 ... Moving pulley 5 ... Telescopic rod 51 ... Lower end of cylindrical body Inner protrusion 52 ... External surface of cylindrical body 53 ... External protrusion at upper end of cylindrical body 54 ... Inner surface of cylindrical body 55 ... Inner stopper at upper end of cylindrical body 56 ... Maximum diameter cylindrical body 57 ... Minimum diameter cylinder body

Claims (1)

(57) [Scope of request for utility model registration] A first movable frame capable of reciprocating in one direction X along a fixed rail; and a second movable frame capable of reciprocating in a direction Y perpendicular to the direction X along a rail on the first movable frame. A movable frame, a winch mounted on the second movable frame, and a pulley disposed below the second movable frame and suspended from a wire from the winch, and capable of supporting an article suspender. A telescopic rod having an upper end connected to the second movable frame and a lower end connected to the elevating frame so as to regulate relative rotation in the X and Y directions, respectively. Is configured by sequentially fitting a plurality of cylinders having different diameters so as to be able to freely enter and exit in the order of the size, and in each adjacent cylinder, a cylinder having a larger diameter has a smaller diameter inside a lower end portion. On the outer surface of the cylinder A small-diameter cylindrical body having a protrusion that can relatively slide and move up and down in contact with the large-diameter cylinder at the outside of the upper end portion and capable of engaging with the protrusion of the large-diameter cylindrical body; Each of the cylinders having at least the largest diameter cylinder among the cylinders having a larger diameter than the cylinder having the smallest diameter has a protrusion which can be relatively slid up and down in contact with the inner surface of the body. The outer projection of the upper end portion of the one-stage small-diameter cylindrical body has a stopper that comes into contact with the ascending thereof, so that the extensible rod can rotate relative to the second movable frame and the elevating frame in the X and Y directions. The regulation supports the upper end portion of the rod to the second movable frame so as to be rotatable in the other direction by a shaft rod in one direction of the X and Y directions, and the second movable frame supports the upper end portion in the other direction. The lower end of the rod is fixed to the lifting frame while being clamped by a pair of buffer means provided. An article lifting and conveying device characterized by being worn.