JPH0645921U - Ladder device of stacker crane in automatic warehouse - Google Patents

Abstract

(57) [Summary] [Purpose] When climbing a ladder to perform work such as maintenance and repair of a stacker crane, improve the safety of climbing and descending the ladder and work efficiency. [Structure] Protective frames 19 for enclosing a person climbing a ladder 17 are attached to columns 6 of the stacker crane 1 in a multi-tiered manner at appropriate vertical intervals.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention provides a stacker crane equipped with a slide fork device that can be raised and lowered horizontally along the front surface of a shelf frame formed by forming a large number of shelves with front openings in a grid pattern. The present invention relates to a ladder device of the stacker crane in an automatic warehouse in which luggage can be taken in and out of an arbitrary shelf by inserting and removing the fork body of the apparatus.

[0002]

[Prior art]

 Since this type of automated warehouse generally has a height of about 10 meters or more, a ladder is provided on the stacker crane for emergency measures in the event of power failure, repair of faulty parts, maintenance and inspection work. However, working on a ladder is dangerous.

Therefore, Japanese Utility Model Publication No. 52-12289 discloses that a stacker crane is provided with an elevator for work in addition to a ladder so that maintenance, inspection, repair and the like can be performed safely. is suggesting.

[0004]

[Problems to be solved by the device]

 However, such an additional work elevator not only complicates the structure significantly, but also can be applied only to an extremely large stacker crane, which limits the scope of application. However, there was a problem that the work elevator could not be used during a power failure, so it would not contribute to the safety of work during a power failure.

The present invention aims to solve this problem.

[0006]

Means for Solving the Problems To achieve this object, the present invention provides a shelf frame in which a large number of shelves with front openings are formed vertically and horizontally, and a stacker crane vertically running vertically along the opening surface of the shelf frame. The stacker crane is equipped with a slide fork device for loading and unloading luggage to and from an arbitrary shelf, and a ladder for inspection is attached to the stacker crane. The protective frame body is designed to surround the person climbing the ladder in multiple stages at appropriate intervals.

[0007]

[Operation and effect of the device]

 With this configuration, the worker can climb up and down the ladder with his or her body surrounded by the protective frame, so that the operator can climb up and down safely and keep both hands away from the ladder. Since the work can be performed while leaning against the protective frame, the work safety and efficiency can be improved.

Furthermore, since the structure is simple in that only the protection frame is attached in addition to the ladder, the safety of the worker and the work efficiency can be improved, but the structure is not complicated and the size is small. It can be applied very easily to stacker cranes and existing stacker cranes.

[0009]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 indicates a stacker crane of an automatic warehouse, reference numeral 2 indicates shelves arranged on both sides of the traveling passage of the stacker lane 1, respectively. A large number of shelves (not shown) that open in the vertical direction are formed in a state of being aligned vertically and horizontally.

The stacker crane 1 includes a carriage 4 that travels along a ground rail provided on a floor surface 3, first and second two columns 5 and 6 that are provided upright on the carriage 4, It is equipped with a slide fork device 7 mounted on one column 5 so as to be able to move up and down, and controls the position of the carriage 4 and the height of the slide fork device 7 so that a fork body (not shown) of the slide fork device 7 is shelved. The luggage W can be put in and taken out from the shelf by inserting and removing it.

The columns 5 and 6 are connected to each other via a top frame 8 and a connecting rod 9 arranged at appropriate intervals in the vertical direction, and the top frame 8 has a top rail 10 a provided on a ceiling surface 10. 2 pairs of front and rear guide rollers 11 sandwiching the left and right sides are provided. Also, a current collector 13 is attached to a bracket 12 projecting laterally from the upper end of the first support column 5, and the current collector 13 is A trolley wire 14 arranged along the ceiling surface 10 is slidably contacted.

A control box 16 having a height of about a person's chest is provided via a box-shaped base body 15 on the rear surface of the second support column 6 on the upper surface of the carriage 4. A main ladder 17 having a left-right vertical rod 17a and horizontal rods 17b mounted in multiple stages at appropriate intervals on a portion of the rear surface of the second support 6 above the control box 16 via a bracket 18. A protective frame 19 is arranged at an appropriate vertical interval so as to surround a person climbing the main ladder 17 in a range from a portion of the main ladder 17 slightly above the height of the person to the upper end. The respective protection frame bodies 19 are fixed to the left and right vertical rods 17a. The upper and lower adjacent protective frame members 19 are connected to each other by a plurality of reinforcing vertical rods 20.

An auxiliary ladder 21 having an L-shape in a side view is detachably provided at a position outside the control box 16 so that the auxiliary ladder 21 can climb to the main ladder 17. By forming the horizontal portion 21a of the auxiliary ladder 21 by a plate, the control box 16 is prevented from being accidentally stepped on. The upper portion of the auxiliary ladder 21 is positioned above the lower horizontal rod 17b of the ladder 17 at the tip of the horizontal portion 21a. By providing the downward U-shaped hook body 22 to be fitted from above, the fitting support portion 23 to be fitted to the corner portion of the base body 15 is formed at the lower ends of both vertical rods 21b of the auxiliary ladder 21. The auxiliary ladder 21 can be held in a stable state.

Note that the auxiliary ladder 21 may be fixed to the lower end of the main ladder 17 and the base body 15 without being detachably provided. In any case, when the auxiliary ladder 21 is attached, The control box 16 can be protected. In the above configuration, when the slide fork device 7 is manually operated when the operation of the stacker crane 1 is stopped due to a power failure, or when the maintenance / inspection or repair of each part is performed, after attaching the auxiliary ladder 21, Various operations can be performed by climbing the main ladder 17.

In this case, since the protective frame body 19 is provided on the main ladder 17, the worker can climb up and down the main ladder 17 in a safe state, and at the same time, the protective frame body 1 can be released by releasing both hands. Since it is possible to work while leaning against 9, it is possible to improve the safety and efficiency of the work. In the above embodiment, the protective frame body 19 is fixed to the vertical rod 17a of the main ladder 17, but each protective frame body 19 may be attached to the second support column 6.

[Brief description of drawings]

FIG. 1 is a side view of a stacker crane.

FIG. 2 is a front view of a three-dimensional warehouse.

FIG. 3 is a perspective view of a mid-height portion of a stacker crane.

FIG. 4 is a perspective view of a lower portion of the stacker crane.

5 is a cross-sectional view taken along line VV of FIG.

[Explanation of symbols]

 1 Stacker Crane 2 Shelf Frame 4 Bogie 5, 6 Support 7 Slide Fork Device 16 Control Box 17 Main Ladder 19 Protective Frame 21 Auxiliary Ladder

Claims (1)

[Scope of utility model registration request] 1. A shelf frame having a plurality of front opening shelves formed vertically and horizontally, and a stacker crane vertically running vertically along the opening surface of the shelf frame. The stacker crane is provided with luggage on an arbitrary shelf. While mounting the slide fork device for loading and unloading freely, and in an automatic warehouse that is equipped with a ladder for inspection etc., in the stacker crane, a protective frame body that surrounds the person climbing the ladder, A ladder device for a stacker crane in an automatic warehouse, which is provided in multiple stages at appropriate intervals above and below.