JPH04130209U - stud car crane - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a stacker crane that can stably handle multiple types of loads with different widths. [Structure] Guide rails 14, 14 extending in the front-rear direction are provided at both ends of the upper surface of the cage 10 in the left-right direction, and
A guide rail 14 is provided at the middle portion of the upper surface of the cage 10 in the left and right direction.
A screw rod 15 extending parallel to the screw rod 14 and having a reverse thread is rotatably supported. The lower surfaces of both longitudinal ends of a pair of fork devices 23, 23, which are extendable and retractable in the left-right direction of the cage 10, are connected to the screw rod 1 through a threaded member 25.
5, respectively, and the lower surfaces of both longitudinal ends of both fork devices 23, 23 are slidably engaged with the guide rails 14, 14 in the front and rear direction via the engagement members. match. When the screw rod 15 is driven to rotate, the fork width interval X of both fork devices 23, 23 is adjusted.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a stacker crane used in automated warehouses, etc.

0002

[Conventional technology]

Figure 6 shows an example of a general automated warehouse, where 1 is a stacker crane, 2 indicates a rack consisting of storage shelves 3 in multiple stages and multiple rows, and the stacker crane 1 The crane 5 is installed on the floor 4 and the guide rail 7 is installed on the ceiling 6. A traveling device 8 allows the rack to travel in the left and right directions in the figure. 2 are erected along the traveling crane 5 on both sides or one side thereof.

0003 Furthermore, the stacker crane 1 has a pair of forks that can be extended and retracted toward the storage shelf 3. A cage 10 having arc devices 9, 9 is equipped to be able to be raised and lowered by a lifting device 11. The stacker crane 1 is stopped in front of a predetermined storage shelf 3, and the cage 10 is is raised and lowered to match the height of the storage shelf 3, and the storage shelf 3 is raised and lowered by both fork devices 9, 9. scoop up the bottom surfaces of the loads 12a, 12b, 12c and take them into the cage 10 side, Alternatively, the cargoes 12a, 12b, 12c can be loaded and unloaded.

0004

[Problem that the idea aims to solve]

However, multiple types of loads 12a, 12b, 12c with different widths (as shown in the figure) In the example, 3 types) are mixed and stored in storage shelves 3 with different width pitches. In the case of a storage, the fork width interval X of both fork devices 9, 9 should be set to the minimum as shown in Fig. Because it has to match the load width 12a, loads 12b and 12c with relatively large widths The stability when handling with both fork devices 9, 9 becomes poor, and the load is likely to collapse. There was a problem.

[0005] This invention was created in view of the above-mentioned circumstances, and it is possible to stabilize multiple types of loads with different widths. The purpose is to provide a stacker crane that can be handled as

[0006]

[Means to solve the problem]

The present invention is an extension that runs along the front of the rack and transfers loads to and from the rack. A stacker cage equipped with a pair of retractable fork devices on the top of the cage that can be raised and lowered. In the lane, the fork width interval of the fork device is configured to be adjustable. It is characterized by:

[0007]

[Effect]

Therefore, in this invention, the fork width spacing of both fork devices is It is possible to adjust the width of the cargo to be delivered as appropriate, and it is possible to handle multiple different types of cargo. It is possible to stably handle loads of the same width.

[0008]

【Example】

Embodiments of the present invention will be described below based on the drawings.

[0009] Figures 1 to 5 show an embodiment of the present invention, and parts in the figures with the same reference numerals as in Figure 6 are represent the same thing.

0010 In the following explanation, the left and right direction refers to the horizontal direction perpendicular to the running direction of the stacker crane. The longitudinal direction refers to the direction in which the stacker crane runs.

[0011] A stacker crane configured in substantially the same manner as the stacker crane 1 shown in FIG. 6 described above. 13, in the left-right direction (left-right direction in FIGS. 1 and 2) of the upper surface of the cage 10. Guide rails 14, 14 extending in the front-rear direction (vertical direction in FIG. 1) are provided at both ends. and both guide rails are disposed in the middle part of the upper surface of the cage 10 in the left-right direction. It extends parallel to the wheels 14, 14 and has a reverse thread from the center in the longitudinal direction to both ends. (right-hand threaded part A and left-hand threaded part B) are attached to the bearings 16 and 1. It is rotatably supported via 6.

0012 Furthermore, a sprocket 17 is provided at one longitudinal end of the screw rod 15. , fixing the screw rod drive motor 18 at a predetermined position on the lower surface of the cage 10; a sprocket 20 attached to the output shaft 19 of the screw rod drive motor 18; Torque is applied to the sprocket 17 of the screw rod 15 via the chain 21. Connect communicably.

[0013] Further, a flap is provided above the guide rails 14, 14 and the screw rod 15. The upper and lower parts of the cage 10 are operated to expand and contract in the left and right directions by the fork drive motor 22. One consisting of an upper stage fork 23a, an intermediate fork 23b, and a lower stage fork 23c. A pair of fork devices 23, 23 are arranged in parallel, and the length of each of the lower stage forks 23c, 23c is The engaging members 24, 24 fixed to the lower surfaces of both ends in the hand direction are connected to the guide rails 14, 1. 4 in a slidable manner in the front-rear direction, and the longitudinal length of each of the lower forks 23c, 23c. The threaded member 25 fixed to the lower surface of the intermediate direction is screwed into the right-hand thread of the screw rod 15. Screwed into part A and left-hand thread part B, respectively, to rotationally drive the screw rod 15. Both fork devices 23, 23 are moved close to each other along the guide rails 14, 14. make it possible to move.

[0014] Here, the structure of the fork devices 23, 23 will be described in detail. The upper stage fork 23a, the intermediate fork 23b, and the lower stage fork that constitute the positions 23, 23 The hooks 23c are slidably engaged with each other in the longitudinal direction, and as shown in FIG. The fork 23c is integrally attached to the lower fork 23c at the front and rear in the longitudinal direction. A drive sprocket 26 and a driven sprocket driven by a fork drive motor 22 A rocket 27 is provided, and the driving sprocket 26 and the driven sprocket 27 has one end fixed to the left end of the intermediate fork 23b in the figure, and the other end fixed to the intermediate fork 23b. The chain 28 fixed to the right end in the figure b is wrapped around it in a crossed manner as shown in the figure. , by rotationally driving the driving sprocket 26, the intermediate fork 23b is rotated. It is designed to be able to slide on the lower stage fork 23c.

[0015] In addition, as shown in FIG. sprockets 29 and 30 are respectively disposed, and the driven sprocket 29 on the left side in the figure has one end. is fixed to the right end of the upper fork 23a in the figure, and the other end is fixed to the right end of the lower fork 23c in the figure. The chain 31 fixed at the right end is wound around as shown in the figure, and the chain 31 is wrapped around the driven sprocket on the right side in the figure. The bracket 30 has one end fixed to the left end of the upper stage fork 23a in the figure, and the other end fixed to the lower stage fork 23a. A fixed chain 32 is wrapped around the left end of the fork 23c in the figure, and the lower stage The upper fork 23 follows the sliding movement of the intermediate fork 23b relative to the fork 23c. a can slide on the intermediate fork 23b.

[0016] Thus, the screw rod 15 is rotated by the screw rod drive motor 18. When driven, both fork devices 23, 23 move toward each other along guide rails 14, 14. The fork width interval X of both fork devices 23, 23 is adjusted. Ru.

[0017] Also, the fork drive motor 22 moves together with each fork device 23, 23. When the drive sprocket 26 of the lower stage fork 23c is rotationally driven, each of the forks is rotated. The upper stage fork 23a, the intermediate fork 23b, and the lower stage fork that constitute the locking devices 23, 23 The fork 23c is slid in the longitudinal direction, and each fork device 23, 23 is operated to extend and contract. be done.

[0018] Therefore, according to the above embodiment, the fork width interval X of both fork devices 23, 23 is , depending on the width of the loads 12a, 12b, 12c to be transferred to and from the rack 2. Since it can be adjusted as needed, multiple types of loads 12a, 12b, 12 with different widths can be adjusted. c can be handled stably.

[0019] Note that the stacker crane of the present invention is not limited to the above-mentioned embodiments. Of course, various changes may be made within the scope of the invention without departing from the gist of the invention. It is.

[0020]

[Effect of the idea]

As explained above, according to the stacker crane of the present invention, both fork devices Adjust the width of the fork as appropriate depending on the width of the load to be transferred between the rack and the fork. It is possible to stably handle multiple types of loads with different widths. It can produce excellent effects such as:

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a view taken along arrow II-II in FIG. 1;

FIG. 3 is a view taken along arrows III-III in FIG. 2;

FIG. 4 is an explanatory diagram of the operation of the fork device in one embodiment of the present invention.

FIG. 5 is an explanatory diagram of the operation of the fork device in one embodiment of the present invention.

FIG. 6 is a side view showing a conventional example.

FIG. 7 is an enlarged view of the cage portion of FIG. 6;

[Explanation of symbols]

2 racks 12a, 12b, 12c load 13 Stacker crane 23 Fork device X Fork width interval

Claims (1)

[Scope of utility model registration request] 1. A stacker crane comprising a pair of extendable and retractable fork devices mounted on the top surface of a cage that can be raised and lowered to travel along the front surface of a rack and transfer loads to and from the rack, wherein the forks of the fork device A stacker crane characterized by a structure in which the width interval can be adjusted.