JPH0649600Y2 - Load handling equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load handling device for suspending a to-be-lifted object on a tip end of a holding arm and transferring the to-be-lifted object vertically and horizontally three-dimensionally.

[0002]

2. Description of the Related Art Conventionally, various models and mechanisms of load handling devices have been proposed. For example, a column vertically erected on a floor or the like and a column supported at a predetermined height position. A swivel part that is swung horizontally with respect to the support column, a link body that has a base end portion pivotally supported by the swivel part, and a tip end portion that can swing in the vertical direction with respect to the base end part; A cylinder device that pivotally supports the cylinder body, connects the tip of the cylinder rod to a connecting member that is connected to the end of the link body, and drives the tip of the link body in the swing direction, and supports it on the connecting member at the tip of the link body. And a holding arm that can hold the object to be lifted,
Japanese Patent Application Laid-Open No. 63-16
There is one shown in 0994. Generally, an upper cylinder drive type load handling device of this type has a structure shown in FIGS. In FIG. 6, 1 is a column, 2 is a swivel part, 3 is a link body, 4 is a connecting member, 5 is a cylinder device, and 6 is a holding arm. The swivel unit 2 is swung in the direction of arrow A with respect to the support column 1, whereby the link body 3 supported by the swivel unit 2 can be horizontally swung. The link body 3 is composed of two upper and lower link members 7,
Each link member 7 has a base end pivotally attached to the swivel member 2 and a tip end pivotally attached to the connecting member 4. The cylinder device 5 is the cylinder body 8
Is pivotally attached to a support bracket 9 above the swivel unit 2,
The tip of the cylinder rod 10 of the cylinder device 5 is shown in FIG.
And as shown in FIG. 7, it is pivotally attached to the connecting member 4. Here, the tip portion of the cylinder rod 10 is connected to the connecting shaft 11 of the upper link member 7 in the connecting member 4, as shown in FIG. The connecting member 4 is formed with a support hole 12 for supporting the base end portion of the L-shaped holding arm 6, and the holding arm 6 is rotatable about the connecting member 4 in the arrow B direction (see FIG. 7). . A hook 14 for suspending a lifted object 13 is attached to the lower end portion of the holding arm 6, and a handle 15 for operating a load handling device is arranged at an upper position of the hook 14.

In the load handling device thus formed, the lifted object 13 suspended on the holding arm 6 can be moved up and down by moving the cylinder rod 10 of the cylinder device 5 forward and backward. It is possible to transfer the lifted object 13 vertically and horizontally in three dimensions.

[0004]

As described above, in the conventional load handling device described above, as shown in FIG. 7, the tip end portion of the link member 7 and the cylinder rod 1 which constitute the link body 3 are connected.
The leading end portion of 0 is connected on the same connecting shaft 11. This is because it has been considered that it is mechanically most efficient to pivotally attach the cylinder rod 10 directly to the operating point P of the link member 7, and all of the conventional upper cylinder drive type load handling devices have this type. It was supposed to be a seed structure.
However, according to such a connecting structure of the cylinder rod 10, since the connecting shaft 11 must be removed and the link member 7 must be removed when replacing or disassembling and repairing the cylinder device 5, the repair and replacement work is very troublesome. Was taken. In particular, when a heavy load to-be-lifted object 13 is hung on the holding arm 6 and the arm 6 is rotated left and right in the direction of the arrow B, a load is applied in the twisting direction to the cylinder rod 10 of the cylinder device 5 to cause a rod seal. It is necessary to replace the cylinder device 5 as appropriate because the life of the cylinder is reduced. Furthermore, when the tip of the link member 7 and the tip of the cylinder rod 10 are pivotally attached to the same connecting shaft 11,
The swing range of the link body 3 in the up-down direction is naturally restricted by the expansion and contraction stroke of the cylinder rod 10 of the cylinder device 5, and only a limited three-dimensional transfer area in terms of design can be obtained.

The present invention has been made by paying attention to the above-mentioned conventional problems, and makes it possible to easily perform the work of replacing and disassembling and repairing the cylinder device, and further, the design freedom to set the three-dimensional transfer area. The purpose is to improve the degree.

[0006]

In order to achieve the above object, the present invention provides a cylinder rod connection having a connecting portion for connecting a tip of a cylinder rod to an upper portion of a connecting member connected to a tip of a link body. It is intended to support the bracket.

[0007]

According to the present invention, the cylinder rod connecting bracket having the connecting portion for connecting the tip of the cylinder rod is supported on the connecting member connected to the tip of the link body. Or replace
Even in the case of disassembly and repair, it is sufficient to release the connection state of the tip of the cylinder rod to the connection portion, and the replacement of the cylinder device and the disassembly and repair work can be easily performed. Further, since the connecting portion for connecting the tip of the cylinder rod is disposed above the connecting position of the tip of the link body with respect to the connecting member, if a cylinder device having the same cylinder stroke as the conventional case is used, It is possible to set the swing range of the link body in the vertical direction to that extent, and it is possible to improve the degree of freedom in designing the three-dimensional transfer region.

[0008]

1 to 3 show a load handling device according to an embodiment of the present invention. As shown in FIG. 1, this load handling device is provided with a column 1 which is erected vertically on a floor surface 20. At the upper end position of the column 1, a horizontal direction (direction of arrow A) with respect to the column 1 is provided. A swivel unit 2 that swivels is provided. The turning motion of the turning unit 2 with respect to the support 1 is performed by driving a motor built in the support 1. A support bracket 21 is provided on the swivel unit 2.
Is attached, and the base end portion of the link body 3 is axially supported by the support bracket 21. The link body 3 is composed of two upper and lower link members 7, and the tip end of each link member 7 is pivotally attached to the connecting member 4. As a result, each link member 7 constitutes a parallelogram link body,
The tip portion of the link body 3 can swing in the vertical direction (C direction) with respect to the base end portion.

A base end portion of a holding arm 6 having an L-shape is pivotally supported by the connecting member 4. That is, the holding arm 6 is supported by the support hole 12 of the connecting member 4 and is rotatable about the connecting member 4 in the plane B direction (see FIG. 3). A hook 14 for suspending an object to be lifted 13 is attached to the lower end of the holding arm 6, and a handle 15 is arranged at an upper position of the hook 14 of the holding arm 6. An operator operates a drive button arranged on the handle 15 to three-dimensionally transfer the lifted object 13 suspended on the hook 14.

The swinging drive of the link body 3 swinging in the direction of arrow C with respect to the support bracket 21 of the swivel portion 2 is provided at the upper part of the support bracket 2 and is rotatably supported by the cylinder bracket 5. Done by. The cylinder device 5 drives a cylinder rod 10 to extend and retract with respect to a cylinder body 8, and a tip end portion of the cylinder rod 10 is pivotally attached to a cylinder rod connecting bracket 22 supported on an upper portion of the connecting member 4. The cylinder rod coupling bracket 22 is a coupling portion (d) that couples the tip end portion of the cylinder rod 10 by H above the pivotal portion (point c) between the upper link member 7 and the coupling member 4 forming the link body 3. Points). That is, in the cylinder device 5, the cylinder body 8 side is pivotally attached to the cylinder bracket 9, and the cylinder rod 10 side is pivotally attached to the cylinder rod connecting bracket 22. For example, even when the cylinder device 5 is replaced or repaired, both brackets 9, All you have to do is remove it from 22.

Next, the operation of the above embodiment will be described. As described above, according to the load handling device of the present embodiment, since the cylinder rod connecting bracket 22 pivotally attaching the tip end of the cylinder rod 10 is supported on the upper part of the connecting member 4, for example, the cylinder device 5 is replaced. Also, even in the case of disassembly and repair, it is sufficient to release the connection state of the tip of the cylinder rod 10 to the connection portion (point d). That is, in the past, since the link member forming the link body and the tip of the cylinder rod were pivotally mounted on the same axis, the link member had to be removed one by one even when the cylinder rod 10 was disassembled and repaired. However, according to the present embodiment, this is not necessary, and the replacement and disassembly repair of the cylinder device can be easily performed.

Further, the connecting position (c) of the tip of the link body 3 (specifically, the upper link member 7) with respect to the connecting member 4.
Since the connecting portion (point d) for connecting the tip of the cylinder rod 10 is provided above the point H) by a distance H1, if the cylinder device 5 having the same cylinder stroke as the conventional one is used, the link body It is possible to set the swing range of 3 in the vertical direction to that extent. Therefore, it is possible to improve the degree of freedom in designing the load handling device that sets the three-dimensional transfer region. FIG. 4 is an actual size diagram showing the swing range of the link body of the conventional load handling device, and FIG. 5 is an actual size diagram showing the swing range of the link body of the load handling device of the present invention. In the figure, point a is the pivot point of the cylinder body with respect to the pivot part, point b is the pivot point of the upper link member with respect to the pivot part, point c is the pivot point of the link member with respect to the connecting member, and point d is the present embodiment. It is a pivot point of a tip part of a cylinder rod to a cylinder rod connection bracket in an example. Here, the length between the points d and c is 65 mm, and the cylinder stroke of the cylinder device is the same in FIGS. 4 and 5. As can be understood by referring to each of these figures, the conventional load handling device shown in FIG. 4 has upper and lower swing ranges of 625 mm with respect to the horizontal axis. The swing range of the load handling device according to the embodiment is improved to 700 mm, and it can be understood that the swing range is significantly improved as compared with the conventional one. Further, even when the swing range of the load handling device according to the present embodiment is set to be the same as or equivalent to the conventional one, the cylinder rod of the cylinder device is extended only within a limited range to some extent, and the responsiveness of the cylinder device is reduced. It is remarkably improved (generally, the cylinder device is considered to have extremely low responsiveness in the vicinity of the extension limit).

[0013]

As described above, according to the present invention, it is possible to easily replace and disassemble the cylinder device, and further improve the degree of freedom in designing the three-dimensional transfer area. The effect is that you can.

[Brief description of drawings]

FIG. 1 is a side view showing a load handling device according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged plan view taken along line V1-V1 of FIG.

FIG. 4 is a dimensional diagram showing a swing range of a link body of a conventional load handling device.

FIG. 5 is a dimensional view showing a swing range of a link body in a load handling device according to an embodiment of the present invention.

FIG. 6 is a side view showing a conventional load handling device.

FIG. 7 is an enlarged plan view taken along line V2-V2 of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 2 Swiveling part 3 Link body 4 Connecting member 5 Cylinder device 6 Holding arm 7 Link member 8 Cylinder body 9 Support bracket 10 Cylinder rod 11 Connecting shaft 12 Support hole 13 Lifted object 14 Hook 15 Handle 21 Support bracket 22 Cylinder rod connection bracket

Claims (1)

[Scope of utility model registration request] 1. A support column vertically erected on a floor or the like, a swinging unit supported at a predetermined height position of the support column and swinging horizontally with respect to the support column, and a base end portion of the swinging unit. A link body that is pivotally supported and has a tip end that can swing in the vertical direction with respect to the base end portion, and a cylinder body that is pivotally supported above the revolving part, and the tip end of the cylinder rod is connected to the tip end of the link body. A load handling device including a cylinder device that is connected to a member and drives the tip end of the link body in the swinging direction, and a holding arm that is supported by the connecting member at the tip end of the link body and that is capable of holding an object to be lifted. The load handling device according to claim 1, wherein a cylinder rod connecting bracket having a connecting portion for connecting the tip of the cylinder rod is supported on an upper portion of the connecting member connected to the tip of the link body.