JPH0532304U - Self-aligning cargo cradle - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to reliably and safely suspend and support the movable load receiving platform at a predetermined number of support points, and further, to change the suspending height of the movable load receiving platform to be higher or lower. Make things extremely easy to do. [Structure] A suspending tool for suspending and supporting a movable load receiving base, a block rotatable around horizontal axes parallel to each other pivotally mounted on a fixed base and a movable load receiving base, and a rotation shaft of the block. The roller chain is connected to both blocks via a horizontal shaft orthogonal to the core.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improved technique of a self-aligning load receiving base used when, for example, a pallet transported by a forklift is transferred to a shelving lift.

[0002]

[Prior Art]

 FIG. 4 shows a conventional self-aligning load receiving base. In the figure, 31 is a fixed base having a rectangular shape in a plan view, and short link chains (also referred to as coil chains) 34 are hung and connected to upper portions of columns 32 at four corners thereof via brackets 33. Reference numeral 35 designates a movable pedestal in which an inclined guide plate 36 for guiding a pallet or the like is arranged on three sides, which has a rectangular shape in a plan view, and a support member 38 is continuously provided under the legs 37 at its four corners. The lower end of the short link chain 34 is connected to the support member 38.

According to the self-aligning load receiving platform having the above-mentioned configuration, even if the pallet transported by, for example, a forklift is not located right above the movable load receiving platform 35, when the pallet is lowered, the pallet will be lost. By pressing the inclined guide plate 36, the movable load receiving tray 35 suspended by the short link chain 34 is moved in the horizontal direction, and the movable load receiving tray 35 follows the pallet and displaces its position. Therefore, the movable load receiving base 35 is practically aligned with the pallet.

When the fork of the forklift is removed from the pallet and the pallet is completely placed on the movable load receiving base 35, the movable load receiving base 35 horizontally moves together with the pallet and is returned to the original position. This would allow, for example, automatic centering to align the center of the pallet with the center of the shelving lift.

[0005]

[Problems to be solved by the device]

 In the self-aligning load cradle having such a structure, as described above, conventionally, the movable load cradle 35 is suspended and supported by the so-called short link chain 34 having no bending direction. This is because it was considered that it was most preferable that the suspending tool had no bending direction in moving the two-dimensional direction in the horizontal direction, but this short link chain 34 has a structure in which the links are sequentially connected. It is difficult to keep the length constant, and it is extremely difficult to set the suspending length of the four short link chains 34 to a predetermined length, and it is often in a three-point support state, which prevents the movable load carrier 35 from moving. Not only was it stable, but there were strength problems.

Further, the short link chain 34 has a small contact area between the links and is easily worn, which easily causes a problem in strength. Moreover, due to uneven wear of the links, the suspension support at four points is a three-point support. There was also the problem of becoming a state. Also, it is difficult to change the suspension height of the movable load receiving base 35, that is, it is difficult to cut the link in order to raise the movable load receiving base 35, and this link cutting is still necessary. In order to reduce the suspension height of the movable load carrier 35, it is extremely difficult to set the length, and it is not an exaggeration to say that it is actually impossible to add links. The chain 34 is being replaced.

It is an object of the present invention to provide a self-aligning load cradle that is suitable for use in which all the above-mentioned inconveniences are eliminated by a very simple and rational improvement.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a self-aligning load carrier in which a movable base is suspended and supported by a fixed base via a plurality of suspenders so as to be movable in a horizontal two-dimensional direction. , The suspension is supported by a block which is pivotally mounted on a fixed base and a movable load cradle and which is rotatable around horizontal axes parallel to each other, and a horizontal axis which is orthogonal to the rotation axis of the block. It is characterized in that it is composed of a roller chain connected to the block.

[0009]

[Action]

 According to the above-mentioned characteristic configuration, the movable load receiving unit is formed by the combination of the rotation of the block with respect to the fixed base and the movable load receiving base and the swinging of the roller chain around the horizontal axis orthogonal to the rotation axis of the block. The table is suspended and supported so that it can move horizontally in two dimensions.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows the whole of the self-aligning load cradle, and Fig. 2 shows the cross section of the self-aligning load cradle. In these figures, 1 in the drawings is a fixed base, and the four corners of the rectangular base body 2 are shown. A screw type level adjusting means 3 is provided, a support 4 is erected in the vicinity of the adjusting means 3, and a connecting member 5 is attached over the upper side of the support 4 in the short side direction of the base body 2. Reference numeral 6 is a bracket for a shaft support attached to the end of the connecting member 5. As shown in FIG. 3, a suspending tool 7 is connected to the shaft support 6a of the bracket 6 in a hanging manner.

Reference numeral 8 denotes a movable load receiving base whose four corners are suspended and supported by the suspending tool 7, and which connects the long members 10 to both ends of the two short members 9 and has the upper surface as a load receiving surface portion S. The gate-shaped frame 11 is erected over both ends of the elongated member 10, and the inclined guide plates 13 are provided on both ends and the outer side surface of the upper connecting member 12 of the gate-shaped frame 11, respectively. A fork-shaped support member 15 that is suspended and connected to the suspending tool 7 is provided on the elongated member 10 at a portion corresponding to the vicinity of the lower end of each leg 14 of 11. The protruding height of the inclined guide plate 13 on the side of loading and unloading of cargo such as a pallet is set lower than the protruding height of the other inclined guide plates 13.

The suspending tool 7 comprises suspending blocks 17 and 18 provided at both ends of a roller chain 16 which can be bent only in one direction. More specifically, the suspending block 17 on the upper side is a shaft. The core 18 is rotatably attached to the shaft supporting portion 6a of the bracket 6 via a horizontal shaft 19 whose core is oriented in the long side direction of the base body 2, and the lower block 18 is parallel to the horizontal shaft 19 described above. It is pivotally attached to the shaft support portion 15 a of the support member 15 via the shaft 20. The roller chain 16 is of a single-row type (it may be changed to two-row or three-row depending on the supporting load), and is horizontal in the direction orthogonal to the rotation axis of the blocks 17 and 18. It is pivotally attached to the blocks 17 and 18 via horizontal shafts 21 and 22 orthogonal to the horizontal shafts 19 and 20 so as to bend around the axis. The dimension between the horizontal shafts 21 and 21 on the fixed base 1 side is set slightly larger than the dimension between the horizontal shafts 22 and 22 on the movable load receiving platform 8 side.

According to the above structure, the roller chain 16 is structurally configured so that the inter-axis dimension of the pin “a” is extremely strictly controlled, so that the movable load receiving base 8 can be reliably placed horizontally at four points. Can be hung and supported. The rotation of the blocks 17 and 18 with respect to the fixed base 1 and the movable load receiving base 8 and the swinging of the roller chain 16 around the horizontal axes 21 and 22 orthogonal to the axis of rotation of the blocks 17 and 18. By combining and, the movable load receiving base 8 is suspended and supported so as to be movable in the horizontal two-dimensional direction.

That is, the movable load receiving base 8 is suspended and supported by the roller chain 16 so as to be swingable around the two axes 19, 21, 20, 22 which are orthogonal to each other. Is not worn at all in the direction orthogonal to its axis, and therefore, the movable load receiving base 8 can be suspended and supported in a strong and safe manner. Moreover, by increasing or decreasing the number of links of the roller chain 16 and by using an offset link if necessary, it is possible to easily change the suspension height of the movable load receiving base 8 to be high or low. Can be done.

It should be noted that the movable load receiving base 8 is supported at four points via the four suspenders 7, but it is possible to support six or eight points via the six or eight suspenders 7. Modifications such as a configuration are possible.

[0016]

[Effect of the device]

 As described above, according to the self-aligning load receiving base of the present invention, the movable load receiving base can be hung and supported movably in the horizontal two-dimensional directions reliably and safely at a predetermined number of support points. It is extremely easy to change the suspension height of the movable load receiving tray to be high or low.

[Brief description of drawings]

FIG. 1 is a perspective view of a self-aligning load receiving base.

FIG. 2 is a vertical sectional side view of the self-aligning load receiving base.

FIG. 3 is a perspective view of a suspension support structure for a movable load receiving base.

FIG. 4 is a schematic side view of a conventional self-aligning load receiving base.

[Explanation of symbols]

2 ... Fixed base, 7 ... Hanging tool, 8 ... Movable cradle, 16
… Roller chain, 17, 18… Block, 19-22… Horizontal axis.

Claims (1)

[Scope of utility model registration request] 1. A self-aligning load carrier in which a movable load carrier is suspended and supported on a fixed base via a plurality of suspenders so as to be movable in a horizontal two-dimensional direction. And a movable pedestal, which are pivotally mounted on parallel blocks that are rotatable about mutually parallel horizontal axes, and a roller chain that is connected to both blocks via a horizontal axis that is orthogonal to the rotational axis of the block. A self-aligning cradle that is characterized by