JP3239586B2 - Stacker crane drive cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device cover provided on a driving device of a stacker crane.

[0002]

2. Description of the Related Art Frame shelves 31 generally used in automatic warehouses.
Are formed on both sides of the passage as shown in FIGS. 6 and 7, for example. That is, a plurality of columns 32 are erected in two rows on the left and right with the passage therebetween, and a plurality of load receiving shelves 33 are arranged between the adjacent columns 32 so as to extend in the left-right direction in a state of facing each other. And, the support column 32 and the receiving rack 33
A plurality of storage portions 34 for storing loads are formed on the frame shelf 31. In FIG. 7, the left side of the drawing is the left of the frame shelf 31, and the right side of the drawing is the right of the frame shelf 31.

In the passage of the frame shelf 31, a stacker crane 36 which reciprocates on a traveling rail 35 laid on the floor surface is provided. The stacker crane 36 includes a traveling platform 37,
A pair of masts 38a and 38b provided on the traveling platform 37
And a lifting carriage 40 arranged between the masts 38a and 38b so as to be able to move up and down. The fork device 4 for transferring a load between the lift carriage 40 and the load receiving shelf 33
1 is reciprocally movable in the left-right direction.

[0004] One mast 38 of a stacker crane 36
A drive device 43 covered by a drive device cover 42 is provided outside of “a”, and the stacker crane 36 is driven by the drive device 43. As shown in FIG. 5, a traveling electric motor 44 is provided below the driving device 43, and a traveling wheel 46 is attached to an output shaft of the motor 44. The lower end of the traveling wheel 46 is in contact with the upper surface of the traveling rail 35 not shown in FIG. Accordingly, when the electric motor 44 for driving is driven, the running wheels 46 rotate and the stacker crane 36
It is designed to move up. On the opposite side of the traveling electric motor 44 across the traveling wheel 46, a traveling electromagnetic brake 47 for restricting the movement of the stacker crane 36 while the crane 36 is stopped is provided. The regulation of the traveling electromagnetic brake 47 can be released manually.

[0005] An electric motor 48 for raising and lowering is disposed above the driving device 43, and a sprocket 50 is attached to an output shaft of the motor 48. The lifting carriage 40
Is linked to the sprocket 50 via a chain (not shown), and the lifting carriage 40 is raised and lowered by driving the lifting electric motor 48. or,
On the other side of the electric motor 48 for lifting and lowering with the sprocket 50 interposed therebetween, the same carriage 4 while the lifting carriage 40 is stopped is provided.
A lifting electromagnetic brake 51 for restricting the movement of zero is provided. The lifting / lowering electromagnetic brake 51 can be manually released from the regulation similarly to the traveling electromagnetic brake 47.

Next, the drive device cover 42 is
Central plate 55 covering the upper and front sides of the
3 which covers left and right sides. The side plates 56a and 56b are detachably attached to the left and right sides of the central plate 55 by a plurality of bolts 55a.

A motor covering portion 57 having a substantially U-shaped cross section is formed on the upper portion of the left side plate 56a so as to protrude toward the left side.
The elevating electric motor 48 comes to the inside of the motor covering portion 57. A motor cover 58 having a substantially U-shaped cross section is formed at the lower portion of the right side plate 56b so as to protrude toward the right side, and the traveling electric motor 44 comes inside the motor cover 58. ing.

The driving device 43 is protected by the driving device cover 42 constructed as described above. In FIG. 5, the drive unit cover 4 is located on the left side of the drawing.
2, the right side of the drawing is the right of the drive cover 42, the near side of the drawing is the front of the drive cover 42, and the far side of the drawing is the rear of the drive cover 42.

[0009]

By the way, the driving device 4
3 maintenance, loosen the bolt 55a, each side plate 56
This is performed in a state in which a and 56b are moved in the left-right direction and detached from the center plate 55.

However, the frame shelves 31 are provided on both left and right sides of the drive device cover 42, and the motor covering portions 57, 58 project from the side plates 56a, 56b. That is, the gap between each side plate 56a, 56b and the frame shelf 31 is very small. Therefore, each side plate 56a, 56
b is difficult to attach and detach, making the attaching and detaching work troublesome,
Maintenance performance was reduced.

The electromagnetic brakes 47 for traveling and lifting and lowering are provided.
Also when manually releasing 51, each side plate 56a, 56b
Has to be removed, which requires a very troublesome attaching / detaching operation as described above.

Furthermore, since the electric motors 44 and 48 are entirely covered with the drive cover 42, there is a problem that heat generated by the drive of the electric motors 44 and 48 is difficult to be discharged from the drive cover 42. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a first object of the present invention is to make it possible to easily attach and detach and improve the maintainability of a driving device.
An object of the present invention is to provide a drive device cover for a stacker crane that can prevent heat of an electric motor from staying inside.

A second object of the present invention is to provide a driving device cover for a stacker crane which can be easily attached and detached and can surely protect the electric motor. Furthermore,
The third object is that even if a plurality of electric motors are provided,
An object of the present invention is to provide a drive cover for a stacker crane that can be easily attached and detached.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an invention according to claim 1 is provided on a side of a stacker crane moving along a rail in a moving direction side and is driven by the crane. In a drive cover of a stacker crane that covers a drive provided with a motor,
The driving device cover includes an opening portion is opened to the side of at least the stacker crane side and the electric motor is the <br/> notch from the opening portion so as not to interfere with the cover forming the notch The point is to prepare .

According to a second aspect of the present invention, there is provided the driving device cover for the stacker crane according to the first aspect, wherein the driving device cover includes an inverted L-shaped plate that covers an upper portion of the driving device and a side opposite to the stacker crane; The drive unit comprises a pair of side plates covering the other two sides except for the side of the stacker crane side, and a cutout portion is formed in the side plate from the side of the stacker crane so that the electric motor does not interfere with the cover. In addition, the gist is that a protection portion for protecting the electric motor is formed so as to protrude toward the outside along the cutout portion.

According to a third aspect of the present invention, there is provided the driving device cover for a stacker crane according to the first aspect, wherein the driving device includes a traveling electric motor for driving the stacker crane;
Equipped with a lifting motor for lifting the lifting carriage of the stacker crane, the drive unit cover notch a first notch so as not to interfere with the moving electric motor from said <br/> opening portion formed to together and that the second notch so as not to interfere with the lift electric motor cutout formed from the open <br/> port portion and its gist.

[0018]

According to the first aspect of the present invention, the notch of the drive cover is cut out from the opening of the cover, and the electric motor is inserted into the notch when the drive cover is mounted on the drive. Is done. Therefore, by moving the drive device cover in the moving direction of the stacker crane, the drive device cover can be easily detached from the drive device.

According to the second aspect of the present invention, the drive unit cover includes an L-shaped plate for covering the upper portion of the drive unit and the side opposite to the stacker crane, and the other two sides excluding the side of the drive unit on the stacker crane side. And a pair of side plates that cover the side walls. A cutout portion is formed in the side plate from the stacker crane side, and an electric motor is inserted into the cutout portion. Therefore, by moving the driving device cover in the moving direction of the stacker crane, the driving device cover can be easily detached from the driving device. Further, a protection portion is formed on the side plate so as to protrude toward the outside along the cutout portion, and the protection portion protects the electric motor exposed to the outside.

According to the third aspect of the present invention, the driving device is equipped with a traveling electric motor and a lifting / lowering electric motor, and the driving device cover is formed with first and second cutouts cut out from openings. . The traveling electric motor is inserted into the first notch, and the elevating electric motor is inserted into the second notch. Therefore, by moving the drive device cover in the moving direction of the stacker crane, the drive device cover can be easily detached from the drive device.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. The same parts as those of the prior art are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 1 and 2, the drive unit cover 1 has a center plate 2 as an inverted L-shaped plate for covering the upper and front sides of the drive unit 43, and covers the left and right sides of the drive unit 43. Side plates 3a and 3b, and can be fixed to the mast 38a by bolts 2a. Each side plate 3a,
3b is welded to the left and right sides of the center plate 2. A rear opening 4 as an opening is provided on the rear side of the drive device cover 1.
Is formed, and a lower opening 5 is formed on the lower side.

An upper cutout 6 as a second cutout is formed in the upper part of the left side plate 3a from the rear opening 4 to the center of the side plate 3a. The vertical width of the notch 6 is formed to be larger than the vertical width of the lifting electric motor 48. A left motor housing portion 7 is formed on the side plate 3a as a protection portion having a U-shaped cross section along the upper cutout portion 6 so as to protrude toward the left side.
The rear side of the left motor housing 7 is open, and the electric motor 48 for raising and lowering can be inserted into the left motor housing 7 from the rear side.

A communication portion 8 extending upward from the lower opening 5 is formed in the side plate 3a. The communication portion 8 is formed at a position corresponding to the traveling electromagnetic brake 47 on the side plate 3a, so that an operator can manually operate the traveling electromagnetic brake 47 from the communication portion 8.

A lower cutout 9 as a first cutout is formed in the lower portion of the right side plate 3b from the rear opening 4 to the center of the side plate 3b toward the front, and the lower cutout 9 is formed below the lower cutout. The width of the notch 9 is formed to be larger than the vertical width of the traveling electric motor 44. Further, a right motor housing portion 10 as a protection portion having an inverted L-shaped cross section is formed on the side plate 3b so as to protrude rightward along the lower notch portion 9. The rear and lower sides of the right motor housing 10 are open, and the traveling electric motor 44 can be inserted into the right motor housing 10 from the rear or lower side.

A communication hole 11 is provided at a position on the side plate 3b corresponding to the electromagnetic brake 51 for lifting, so that the operator can manually operate the electromagnetic brake 51 for lifting from the communication hole 11. ing.

Next, the operation of the drive device cover 1 configured as described above will be described. When removing the drive device cover 1 for maintenance or the like of the drive device 43, the bolt 2a
To release the connection of the drive device cover 1 to the mast 38a. At this time, the traveling electric motor 44 is inserted into the lower cutout 9, and the elevating electric motor 48 is inserted into the upper cutout 6. Then, when the drive device cover 1 is moved forward, that is, in the direction of arrow A in FIG. 3, the notches 6, 9 move forward with respect to the electric motors 44, 48. The drive cover 1 is removed without interference.

When the drive device cover 1 is attached,
The drive device cover 1 is moved in the direction opposite to the arrow A, and the respective electric motors 44, 4 are moved from the rear ends of the notches 6, 9, respectively.
8 is inserted into each notch 6, 9. And bolt 2a
The drive unit cover 1 is
fixed to a.

Further, since the electric motors 44 and 48 are housed in the motor housings 7 and 10, respectively, they are reliably protected by the motor housings 7 and 10. Further, since the motor housings 7 and 10 are open at the rear side, even if the electric motors 44 and 48 are driven to generate heat, the heat is efficiently discharged to the outside of the drive device cover 1.

Next, in order to move the crane 36 while the stacker crane 36 is stopped, the operator needs to move the left side plate 3.
A hand is put in from the communication part 8 of a, and the traveling electromagnetic brake 47 is manually released to make the stacker crane 36 movable. Then, the stacker crane 36 is moved by the operator pushing in a desired direction.

In order to move the carriage 40 while the elevator carriage 40 is stopped, the operator needs to move the right side plate 3b.
The electromagnetic brake 51 for lifting and lowering is manually released to put the lifting carriage 40 in a movable state. Then, when the operator pushes the elevating carriage 40 in a desired direction, the elevating carriage 40 is moved.

Further, since the communication portion 8 and the communication hole 11 communicate the inside of the drive device cover 1 with the outside, the heat accumulated inside the drive device cover 1 is released by the communication portion 8 and the communication hole 11. Is discharged to the outside through

As described in detail above, in the present embodiment, the upper cutout 6 and the lower cutout 9 extending forward from the rear opening 4 are formed in the drive device cover 1, and each cutout is formed. The electric motors 44, 48 were inserted into the cutouts 6, 9, respectively.
Therefore, unlike the related art, since the drive device cover 1 can be moved in the front-rear direction and the cover 1 can be attached and detached, the cover 1 can be easily attached and detached without the drive device cover 1 interfering with the frame shelf 31. As a result, the maintainability of the driving device 43 can be improved.

Further, since the motor housings 7, 10 into which the electric motors 44, 48 are inserted are open at the rear side, even if the electric motors 44, 48 generate heat, the heat is efficiently removed from the driving device cover. 1 can be discharged to the outside. Therefore, it is possible to prevent heat from accumulating inside the drive device cover 1.

In this embodiment, the motor housings 7, 10 are formed on the left and right side plates 3a, 3b so as to protrude outward along the notches 6, 9, respectively. Therefore, the drive device cover 1 can be easily attached and detached, and the electric motors 44 and 48 can be reliably protected by the motor housings 7 and 10.

In this embodiment, since the upper cutout 6 and the lower cutout 9 are formed in the drive cover 1, the drive 43 has two electric motors 44 for traveling and lifting and lowering.
Even if 48 is provided, the drive device cover 1 can be easily attached and detached.

Furthermore, in the present embodiment, the left and right side plates 3a, 3
The communication portion 8 and the communication hole 11 were formed at positions corresponding to the respective electromagnetic brakes 47 and 51 of b. Therefore, each electromagnetic brake 47, 51 can be released without removing the drive device cover 1. In addition, by providing the communication portion 8 and the communication hole 11, the heat radiation of the drive device cover 1 can be further improved.

The present invention is not limited to the above embodiment, but may be embodied with the following modifications, for example. (1) As shown in FIG. 4, the right side of the right motor housing 10 may be opened. In this case, the heat inside the drive device cover 1 can be more efficiently discharged to the outside, and the accumulation of heat can be prevented more reliably. Further, the right motor housing 10 itself may be omitted, and the traveling electric motor 44 may be exposed outside the drive device cover 1. In this case, the heat generated from the traveling electric motor 44 is directly discharged to the outside of the drive device cover 1, and the adverse effect of the heat on the traveling electric motor 44 is reduced. The same applies to the left motor housing 7.

(2) In the present embodiment, the rear opening 4 and the lower opening 5 are provided in the drive device cover 1, but openings other than the openings 4 and 5 may be provided. For example, the upper surface portion of the drive device cover 1 may be opened. in this case,
The heat in the drive device cover 1 can be more efficiently discharged to the outside.

(3) In this embodiment, the communication portion 8 and the communication hole 11 are formed in the drive device cover 1, but these may be omitted. In this case, in order to release the electromagnetic brakes 47 and 51, the drive device cover 1 must be removed. However, since the drive device cover 1 can be easily attached and detached, the electromagnetic brakes 47 and 51 can be released more easily than before. can do.

(4) In this embodiment, the entire drive unit 43 is covered with the drive unit cover 1, but a part of the drive unit 43 may be covered. For example, only the electric motor 48 for elevating, the sprocket 50 and the electromagnetic brake 51 for elevating may be covered. Also in this case, the drive device cover 1 can be easily attached and detached similarly to the embodiment. or,
Only the electric motor 44 for traveling, the traveling wheels 46 and the electromagnetic brake 47 for traveling may be covered with the drive device cover 1. Also in this case, the drive device cover 1 can be easily attached and detached similarly to the embodiment.

(5) In this embodiment, the two notches 6
9 is formed on the drive cover 1, but 3
If more than one electric motor is provided, the drive cover 1
May be formed with three or more notches. Also in this case, the drive device cover 1 can be easily attached and detached similarly to the embodiment.

Next, other technical ideas grasped by the above embodiments will be described below together with their effects. (1) The drive device cover according to claim 2, wherein the drive device is provided with an electromagnetic brake for restricting the driving of the stacker crane while the crane is stopped, and the drive device is provided at a position corresponding to the electromagnetic brake on the drive device cover. A drive device cover provided with a communication portion that connects the inside and the outside of the cover.

In this case, the electromagnetic brake can be released without removing the drive cover. (2) The drive device cover according to claim 2, wherein an outer side surface of the protection portion is opened.

In this case, the heat of the electric motor can be efficiently discharged to the outside of the drive device cover. In this specification, an electric motor is a rotary electric motor that generates mechanical power by applying a voltage and a current, and is a multi-speed electric motor such as a pole number switching induction motor or a direct current motor whose speed can be adjusted in a wide range by adjusting a magnetic field. Acceleration / deceleration motors such as a shunt motor and an AC shunt commutator motor, and variable speed motors such as a DC series motor and a squirrel-cage induction motor having a high secondary resistance are included.

[0046]

As described in detail above, according to the first aspect of the present invention, a notch portion is formed in the drive device cover, and the electric motor of the drive device is inserted into the notch portion. Therefore, the drive device cover can be easily attached to and detached from the drive device by moving the drive device cover in the moving direction of the stacker crane, and the maintainability of the drive device can be improved. Further, since the electric motor is exposed to the outside of the drive device cover from the cutout portion, it is possible to prevent accumulation of heat of the electric motor inside the cover.

According to the second aspect of the present invention, the protection portion is formed on the side plate so as to protrude toward the outside along the notch.
Therefore, the drive device cover can be easily attached to and detached from the drive device, and the electric motor can be reliably protected by the protection portion.

According to the third aspect of the present invention, since the first and second notches are formed in the drive device cover, the drive device cover is provided even when the drive device is equipped with two electric motors for traveling and elevating. Can be easily attached and detached.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a drive device cover of the present embodiment.

FIG. 2 shows the drive device cover and the drive device of FIG.
It is sectional drawing seen from the B direction.

FIG. 3 is a perspective view showing a stacker crane and a frame shelf of the embodiment.

FIG. 4 is a cutaway perspective view showing another example of a drive device cover.

FIG. 5 is a front view showing a conventional drive device cover.

FIG. 6 is a side view showing a conventional stacker crane and a frame shelf.

FIG. 7 is a front view showing a conventional stacker crane and a frame shelf.

[Explanation of symbols]

1 ... Drive device cover, 2 ... Center plate as inverted L-shaped plate,
3a, 3b ... side plates, 4 ... rear opening portions as opening portions,
6 upper cutout as second cutout, 7 left motor housing as protection, 9 lower cutout as 1st cutout, 10 right motor as protection Housing section, 35: running rail, 36: stacker crane, 43
... Driving device, 44 ... Electric motor for traveling, 48 ... Electric motor for elevating.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-24516 (JP, A) JP-A-5-286516 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66F 9/07 B65G 1/04

Claims (3)

(57) [Claims] 1. A driving device cover for a stacker crane provided on a side of a moving direction of a stacker crane moving along a rail and covering a driving device provided with an electric motor for driving the crane. cover stacker crane including at least an opening portion of the stacker crane side portion is opened, the electric motor is the <br/> notch from the opening portion so as not to interfere with the cover forming the notch Drive cover. 2. The drive device cover for a stacker crane according to claim 1, wherein the drive device cover covers an upper portion of the drive device and a side portion opposite to the stacker crane, and a drive device side of the stacker crane. And a pair of side plates that cover the other two sides except for the side portion of the stacker, and a cutout portion is formed in the side plate from the stacker crane side so that the electric motor does not interfere with the cover, and the electric motor is protected. A drive device cover for a stacker crane, wherein a protective portion to be formed is formed so as to protrude outwardly along the notch portion. 3. The driving device cover for a stacker crane according to claim 1, wherein the driving device is equipped with a traveling electric motor for traveling the stacker crane, and a lifting / lowering electric motor for lifting and lowering the lifting carriage of the stacker crane. with cutouts form a first cutout portion from the opening portion so as not to interfere with the moving electric motor to drive the cover, said second notch so as not to interfere with the lift electric motor A drive unit cover for a stacker crane with a notch formed from the opening.