JPH0725417A - Suspended conveying device - Google Patents

Abstract

PURPOSE:To safely and smoothly transfer a load between an elevating load carrier and a load receiving part on a shelf side in a suspended conveying device provided with a transfer means for transferring a load by pushing/pulling onto the elevating load carrier suspended from a conveying train by a chain. CONSTITUTION:Supported members 34a, 35a, which are arranged both right and left side parts of an elevating load carrier 17 and can be freely advanced/ retracted in the lateral direction, are put on supporting members 6 on shelf sides, and the lowering elevating load carrier 17 is received by shelves 1A, 1B on both sides in the position, in which a load receiving part 3 on the shelf side and the load receiving part 21 on the elevating load carrier 17 side are put on the same level, and then, sagging according to feeding of a chain 16 is detected by a sagging detecting means 38, so that feeding of the chain 16 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention hangs a hoisting platform from a transportation train that travels along the shelves above the aisle between the left and right shelves. The present invention relates to a suspending and conveying apparatus provided with transfer means for pushing and pulling and transferring a load between the load receiving part on the side of an elevating and lowering platform.

[0002]

2. Description of the Related Art As described above, in an elevating and lowering platform having a transfer means for pushing and pulling and transferring a load, the load receiving part and the load receiving part on the shelf side are substantially leveled and stopped accurately. If this is not done, the load transfer between the load receiving parts cannot be carried out safely and smoothly. However,
It is not easy to improve the stop level accuracy of the lifting platform suspended by a plurality of suspenders such as chains and belts, due to the extension of the suspenders. In addition, since the hoisting platform that is suspended by the hanger is unstable, even if the hoisting platform can be stopped accurately to a predetermined level, the hoisting platform will sway to ensure safe and smooth loading. There is also a risk that it will be blocked.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, the features of which will be described with reference numerals of embodiments described later in parentheses. As shown, the suspension transport device of the present invention is a transport train (9) that travels along the shelf above the passage (2) between the left and right shelves (1A, 1B).
From the hoisting platform (17) that can be lifted and lowered by a plurality of suspenders (16) that can be rolled up and unwound freely, and a cargo receiving section (21) that is connected to the cargo receiving section (3) at each stage on the shelf side, Both load receiving parts
In a suspended transfer device equipped with transfer means (23) that pushes and transfers loads between (3, 21), it moves laterally to the left and right side parts of the lifting platform (17) respectively. Freely supported member
(34a to 35b), a hanging tool slack detecting means (38), and a supporting member (6) provided for each shelf-side load receiving section (3), and the supported members (34a to 35b) are , When the hoisting platform (17) is lowered in the protruding state, ride on the support member (6) on the shelf side to lift the hoisting platform (1).
7) is supported by the left and right shelves (1A, 1B) .In this supporting state, the shelf side load receiving part (3) and the lifting platform side load receiving part (21) should be connected at the same level. In the hanging tool slack detecting means (38), the lifting / lowering platform (17) is mounted on the supported member (3).
4a to 35b) to support the shelves (1A, 1B) on the left and right sides to detect the slack caused by the extension of the suspension tool (16),
The feature is that the feeding of (16) is stopped.

The supported members (34a-35b) are mounted on the lifting platform (1
7) are arranged at two places on the left and right sides of the left and right sides respectively, and the support members (6) on the shelf side are installed between the shelf columns (4) on the aisle (2) side between the shelves to receive the cargo receiving section (3). The front end of the load supporting roller rail (8) can be supported. Also, support members on the shelf side (6)
A V-shaped receiving portion (43) for correcting the positional deviation of the supported member (34a) in the train traveling direction can be provided at a position for receiving the at least one supported member (34a).

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the accompanying drawings. 1A and 1B in FIGS.
Are shelves arranged side by side with a passage 2 interposed therebetween.
Number of load receiving parts 3 divided into the length direction and the height direction of the
Is equipped with. Each load receiving portion 3 is a pair of left and right load supporting rollers whose front and rear end portions are supported by a pair of front and rear support members 6 and 7 which are installed between the shelf columns 4 on the passage 2 side and between the shelf columns 5 on the opposite side. The rail 8 is provided. The load supporting levels of the load receiving portions 3 (the load supporting level of the load supporting roller rail 8) that are opposed to each other across the passage 2 are the same.
Therefore, the upper surface of the support member 6 on the side of the passage 2 that supports the load supporting roller rail 8 is also at the same level.

Reference numeral 9 is a transportation train. This transport train 9
Is a power trolley 13 having drive wheels 12 supported by a guide rail 10 installed above a passage 2 between the shelves 1A and 1B and driven by a motor 11, and idle wheels 14
And a free trolley 15 having a passage 2
It is self-propelled along (shelf 1A, 1B). An elevator platform 17 is suspended from the transport train 9 by a plurality of chains (hangers) 16. Each chain 16
It is operated by a hoisting and unwinding means 20 including a chain hoisting and unwinding toothed wheel 18 built in the transport train 9 and a motor 19 that drives the toothed wheel 18 to rotate forward and backward,
The lifting platform 17 is driven up and down.

The lifting platform 17 is a passage 2 between the shelves 1A and 1B.
The load receiving portion 21 which can be lowered inward and moved up and down and connected at the same level as each of the rack side load receiving portions 3 is connected to the load supporting roller rail 8 in the rack side load receiving portion 3. A pair of left and right load supporting roller rails 22 and a load transfer means 23 are provided. The load transfer unit 23 pushes and pulls the load W between the load receiving unit 3 on the shelf side and the load receiving unit 21 on the lifting platform 17 side, and various known units can be used. Here, a pair of left and right, which are the same as those disclosed in Japanese Patent Application No. 5-133485 previously filed by the present applicant, in which the left and right sides of the load W can freely move in and out in the load transfer direction. The movable bodies 24 and 25 and the movable body 2
Load locking tool 2 rotatably supported at both front and rear ends of 4, 25
6a, 26b and 27a, 27b, and movable bodies 24, 25
Means 28 for moving and retracting the load and the load locking tools 26a-2
7b is shown as an example.

That is, the movable bodies 24 and 25 are fixed rails 3
Intermediate movable rail 32 that can move in and out of 0, 31
A drive means 28 is supported on the drive unit 33 so as to be movable back and forth.
Is an intermediate movable rail 3 with respect to the fixed rails 30 and 31.
2 and 33 are moved back and forth, and the intermediate movable rail 3
The movable bodies 24 and 25 are moved in and out of relation to 2, 33, and this mechanism is basically the same as the conventionally known three-stage running fork drive mechanism. Further, the driving means 29 oscillates the load locking members 26a to 27b between the upright posture and the fall posture in which the load W is pushed and pulled, and is located at one end side of the movable bodies 24 and 25. A pair of left and right load locks 26a, 27a (or 26
b, 27b) from the standing posture to the lying posture (or vice versa) when interlockingly rocked, a pair of left and right load locks 26b, 27b (or 26) on the other end side of the movable bodies 24, 25.
a, 27a) is configured so as to interlock and swing from the lying posture to the standing posture (or vice versa).

Two supported members 34a, 34b and 35a, 35b are provided on the left and right sides of the lifting platform 17, respectively. Each of the supported members 34a to 35b is provided in parallel between the load supporting roller rails 22 and is composed of pins that can move in and out of the shelves 1A and 1B on the left and right sides. It is driven to move in and out by suitable moving means 36a, 36b and 37a, 37b such as a shaft and a swing arm. These withdrawal drive means 36a-37b
May be provided side by side for each of the supported members 34a to 35b as illustrated, but two or all four supported members 34a may be provided.
35b may be configured to be interlocked with the withdrawal drive means.

As shown in FIG. 1, the lifting / lowering platform 17 is provided with slack detecting means 38 for the chain 16. The slack detecting means 38 is provided adjacent to one of the plurality of chains 16 and can be lifted up and down within a certain range on the upper frame 17a of the lifting platform 17 as shown in FIG. And a lifting rod 39 supported by the lifting rod 39
A spring 40 for urging the lower part downward and a lifting rod 39
And a limit switch 42 for detecting the downward movement of the elevating rod 39 via the switch operating member 41. The chain 16 is connected to the upper end of the elevating rod 39. There is.

Normally, as shown in FIG. 4A, the lifting platform 1
Due to the gravity acting on 7, the hoist platform 17 moves the spring 40
The limit switch 42 is supported by the lifting rod 39 while being lowered to the lower limit level against the urging force of the switch, and the operating portion 42a of the limit switch 42 is separated from the switch operating member 41 and is in the off state.

When loading and unloading a load W to and from the load receiving portion 3 of the shelves 1A and 1B, as shown by the phantom line in FIG. 1, the lifting and lowering platform 17 is lifted to the upper limit level for transportation. The train 9 is run along the guide rails 10 to a position corresponding to the cargo receiving section 3 that is the target of the loading / unloading work. When the transport train 9 is stopped at a predetermined position, the motor 19 of the winding / unwinding means 20 rotationally drives the toothed wheel 18,
The chain 16 is unrolled and the lifting platform 17 is lowered to the position just beside the cargo receiving section 3 for loading and unloading.
As shown in FIG. 4A, after the hoisting and lowering platform 17 has passed through the upper and lower cargo receiving section 3 of the cargo receiving and receiving work target 3, the two supported members on both left and right sides of the hoisting and lowering platform 17. 34a-35b are made to project by retreat drive means 36a-37b.

Thus, when the lifting platform 17 arrives at the position just beside the load receiving portion 3 of the loading and unloading work, as shown in FIG. 4B, the respective supported members 34a to 35b in the protruding state are moved to the load receiving portion 3 concerned. It rides on the supporting member 6 that supports the front end of the load supporting roller rail 8 and prevents further lowering of the lifting platform 17. At this time, the load receiving portion 21 (load supporting roller rail 22) on the lifting platform 17 side and the load receiving portion 3 (load supporting roller rail 8) on the shelves 1A and 1B side are at the same level. In this way, the chain 16 is extended even after the left and right sides of the lift platform 17 are received by the support members 6 of the shelves 1A and 1B on the left and right sides via the front and rear supported members 34a to 35b, respectively, and stopped. , Each chain 16 becomes slack, and the slack of the chain 16 connected to the slack detecting means 38 is caused by the spring 40 as shown in FIG. 4B.
It is absorbed by the lowering of the elevating rod 39 which is urged downwardly by. Upper frame 1 of the lifting platform 17 at this time
Since the limit switch 42 detects the downward movement of the elevating rod 39 with respect to 7a via the switch operating member 41, the motor 19 of the winding and unwinding means 20 is stopped and controlled based on the detection signal of the limit switch 42.

If the lifting / lowering platform 17 is stopped at the loading / unloading work target level by controlling as described above, the load transfer means 2
3 is operated, for example, when the load W of the load receiving portion 3 on the shelf 1A side is pulled into the load receiving portion 21 on the lifting platform 17 and transferred, the load locks 26a of the pair of left and right movable bodies 24 and 25 are used. ~ 27b, the load locks 26a, 27 on the shelf 1A side
Both movable bodies 24 and 25 are moved forward to the shelf 1A side in a state where a is in the standing posture (the load locking tools 26b and 27b on the opposite side are in the lying posture). At this time, both movable bodies 24 and 25 are attached to the shelf 1.
The load W supported by the load-receiving portion 3 on the A side advances and moves on both left and right sides. When the movable bodies 24 and 25 reach the advance limit position, the load locking tools 26a and 27a are switched to the lying position, and then both movable bodies 24 and 25 are moved backward to the original positions, whereby the shelf 1A of the shelf 1A is moved. The load W in the load receiving section 3 is lifted by the load locks 26a and 27a in the lying posture.
It is pulled out on the side load receiving portion 21. At this time, the load W slides so as to transfer from the load-supporting roller rail 8 on the shelf side to the load-supporting roller rail 22 on the lifting platform 17 side.

When the load W on the load receiving portion 21 on the lifting platform 17 side is pushed out and transferred to the load receiving portion 3 on the shelf 1A side,
A pair of left and right load locks 26b, 2 on the rear side of the load W
The movable body 24, 25 is moved forward to the shelf 1A side in a state in which the 7b is in the lying position (the load locking devices 26a, 27a on the shelf 1A side are in the standing position), and the load W is held by the load locking device 26b, 27b. After the slab has been pushed and transferred into the load receiving portion 3 on the side of the shelf 1A, both movable bodies 24 and 25 can be moved backward to the original positions. The push-in / pull-out transfer of the load W between the load receiving portion 3 on the side of the shelf 1B and the load receiving portion 21 on the side of the hoisting and loading platform 3 can be performed in the same manner as described above.

When the load transfer work is completed, the motor 19 of the hoisting and unwinding means 20 drives the toothed wheel 18 in the reverse direction to wind up the chain 16 to raise the elevating and lowering platform 17, but the projecting state of the object is raised. Support members 34a-3
5b floats from the support member 6 on the shelves 1A and 1B side, and then 1
Before reaching the load receiving portion 3 on the step, each of the supported members 34a to 35b in the protruding state is retracted by the retracting drive means 36a to 37b. Then, after the lifting platform 17 reaches the ascending limit level shown by the phantom line in FIG. 1, the transport train 9 may be run.

Although not shown in the drawing, the lifting platform 1
When 7 moves up and down in the passage 2 between the shelves 1A and 1B, lift guides provided on both left and right sides of the lift platform 17 and a vertical guide rail vertically attached to the passage 2 side of the shelves 1A and 1B. 5 can be configured so as to prevent undesired shaking of the hoisting platform 17 in the train running direction (front-back direction) and the width direction of the inter-shelf passage 2 (horizontal direction), as shown in FIG. As described above, the receiving portion 43 that corrects the positional deviation of the supported member 34a in the train running direction is provided at a position of the shelf-side support member 6 that receives at least one supported member, for example, the supported member 34a. You can The receiving portion 43 shown in the figure includes a pair of left and right members 44, and the supported member 3
Although the V-shaped concave portion into which 4a is fitted is formed, the upper end opening may be constituted by a U-shaped concave portion opened in the train traveling direction. By disposing such a receiving portion 43, the supporting members 6 of the shelves 1A and 1B on both sides via the supported members 34a to 35b can support the left and right sides of the lifting platform 17 when supporting the left and right sides. Is slightly displaced in the train running direction (front-back direction), the supported member 3
When the 4a fits into the receiving portion 43, the lifting platform 17
It is possible to automatically correct the positional deviation of the train running direction (front-back direction).

Load transfer means 23 for pushing and pulling the load W
Are not limited to those in the above embodiment. For example, a movable body that moves back and forth under the bottom surface of the load W between a pair of left and right load supporting roller rails 8 and 22, and a load pushing / pulling locking device that is provided at both front and rear ends of the movable body so as to be up and down. It may be of any type known in the art, such as one consisting of and. Of course,
The load-supporting roller rails 8 and 22 are arranged on the shelf-side load-receiving portion 3 and the lift-loading platform 17-side load-receiving portion 21. However, these roller rails are not indispensable, and in some cases, the lift-loading platform 17-side load-receiving platform. It is possible to dispose a load supporting and conveying drive conveyor driven in the load transfer direction together with the load transfer means 23 in the section 21.

The chain slack detecting means 38 can also be provided on the side of the transport train 9 where the chain winding and feeding means 20 is located. In this case, the chain 16 hanging from the toothed wheel 18
It is only necessary to use a movable toothed wheel that laterally presses the side to detect the lateral movement of the movable toothed wheel when the chain 16 is loosened with a limit switch or the like. Of course, the structure of the chain slack detecting means is not limited to that of the embodiment, and all chain 1
It is also possible to add a slack detecting means for each 6. Further, the slack detecting means 38 may be provided only on one chain 16, and the other chains 16 may be provided with only a take-up mechanism that absorbs the slack.

[0020]

As described above, according to the hoisting and conveying apparatus of the present invention, the hoisting and lowering platform, which is lowered into the passage between the shelves, is supported on both left and right sides thereof so as to be movable back and forth. Through the member and the support member on the shelf side, it is possible to receive them on the shelves on both sides at the level of the loading / unloading work target. Moreover,
A slack detecting device for hanging equipment such as a chain that drives the hoisting platform up and down is also provided, and as described above, the hoisting device is fed out after the hoisting platform is received by the shelves on both sides at the loading / unloading target level. Since it is possible to detect the slack associated with the slack and stop the feeding of the suspension, the control of the suspension is simply and easily performed based on the slack detection signal of the slack detecting means. This allows the lifting platform to be accurately stopped when the loading / unloading target level, that is, the shelf-side loading platform and the loading platform-side loading platform are at the same level. It can be in a stable state with both sides supported by the shelves.

Therefore, even though the load pushing / pulling transfer means which requires the stop level accuracy is used, the lifting / stopping control of the lifting / lowering platform becomes easy and easy, and the rack and the lifting / lowering platform by the load transferring means are used. It is possible to perform transfer of the load between the load and the load in an extremely safe and smooth manner.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a main part showing a load transfer state.

FIG. 2 is a side view with the front shelf omitted.

3 is a cross-sectional plan view of FIG.

FIG. 4 is a front view showing a main part of the lifting platform and a main part of a shelf in a state immediately before stop, and FIG. 4B is a front view showing a main part of the lifting platform and a main part of the rack stopped at a predetermined level. It is a front view shown.

FIG. 5 is a vertical cross-sectional side view showing a main part of another embodiment.

[Explanation of Codes] 1A Shelf 1B Shelf 2 Passage between shelves 3 Shelf-side load-receiving part 6 Shelf-side support member 8 Shelf-side load-receiving part load-supporting roller rail 9 Transport train 10 Guide rail 16 Chain (hanging tool 17 Lifting platform 20 Chain hoisting / unwinding means 21 Lifting platform side load receiving section 22 Lifting platform side load supporting roller rail 23 Load pushing / pulling transfer means 34a Supported member 34b Supported member 35a Supported member 35b Supported member 36a Entry / exit drive means 36b Entry / exit drive means 37a Entry / exit drive means 37b Entry / exit drive means 38 Chain slack detecting means 39 Elevating rod 40 Spring 42 Limit switch 43 Receiving part

Claims (3)

[Claims] 1. Lifting and lowering by a plurality of suspenders (16) that can be hoisted and unwound from a transportation train (9) running along the shelves above the aisle (2) between the left and right shelves (1A, 1B). On the hoisting platform (17) suspended as much as possible, the load receiving part (21) connected to the load receiving part (3) at each stage on the shelf side and the load are pushed and transferred between both load receiving parts (3, 21). In the suspension conveyance device provided with the transfer means (23), the supported members (34a to 35b) provided on the left and right side portions of the hoisting platform (17) so as to be able to move forward and backward respectively. A hanging member slack detecting means (38) and a supporting member (6) provided for each shelf-side load receiving section (3), and the supported members (34a-35b) move up and down in a protruding state. When the loading platform (17) descends, it rides on the support member (6) on the shelf side to support the lifting platform (17) on the left and right shelves (1A, 1B). The shelf-side load-receiving part (3) and the lifting platform-side load-receiving part (21) are the same. Is arranged to connect with Le, hanger slack detecting means (38), the lifting loading platform (17) is supported member
(34a ~ 35b) to detect the slack caused by the extension of the suspension tool (16) after being supported by the shelves (1A, 1B) on both the left and right sides, and to stop the suspension of the suspension tool (16). Is a suspended carrier. 2. The members to be supported (34a to 35b) are arranged at two positions on the left and right sides of the hoisting platform (17) respectively, and the supporting members (6) on the shelf side are the inter-shelf passages (2). Is installed between the shelf columns (4) on the side, and the roller rail for supporting the load of the load receiving section (3).
The suspended conveyance device according to claim 1, which supports the front end of (8). 3. The shelf-side supporting member (6) is provided at a position for receiving at least one supported member (34a).
Receiving part (43) that corrects the positional deviation of (34a) in the train running direction
The suspension conveyance device according to claim 1, further comprising: