JPH0625503Y2 - Winch mounting structure for bucket - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a winch mounting structure for a bucket mounted at the tip of a boom of an aerial work vehicle or the like.

[Conventional technology]

Conventionally, a winch mounted near a bucket mounted on the tip of a boom of an aerial work vehicle or the like is required to be as lightweight and small as possible in terms of expanding the work range of the boom and safety. . On the other hand, however, it is a fact that the weight of the winch to be lifted is required to gradually increase the weight of the transformer as the size of the transformer is increased.

[Problems to be solved by the device]

However, in the conventional winch 11, as shown in detail in FIG. 4, only one pin receiving hole 14 is provided in the winch post 13 that supports the winch body 12 so as to be swingable. Therefore, in order to lock the winch body 12 and the sub boom 15 at different tilt angles, a plurality of pin insertion holes 17 ... Must be formed in the flange portion 16 provided on the winch body 12 side. Therefore, since the winch body 12 side has a decrease in strength due to the formation of a large number of pin insertion holes 17, it is difficult to construct the flange portion 16 using a lightweight FRP material, and the material is robust in terms of strength. In terms of weight, a relatively heavy metal material must be adopted, so that the winch 11, which must be light in weight, becomes heavier than necessary. Cormorants, etc. had a problem.

[Means for Solving the Purpose and Problem of Invention]

The present invention has been made in view of the above problems,
The purpose of this is to provide a winch mounting structure for a bucket mounted on the tip of a boom of an aerial work vehicle, for which purpose a winch post mounted near the bucket mounted on the tip of the boom has a vertical surface. A winch body having a flange pivotally mounted therein, a drive unit and a drum attached to the upper end of the flange, and a sub-boom attached to the winch body. In an aerial work vehicle, at least two pin receiving holes are bored in the winch post, and a plurality of pin insertion holes are provided in the flange portion, and one of the two pin receiving holes and the plurality of pin receiving holes are provided. Align one of the pin insertion holes and insert stopper pins into both aligned holes to secure the winch body to the winch post at a predetermined angle. Configured to.

[Action]

Since the above configuration is adopted, when the number of pin insertion holes provided on the winch side is the same as the conventional one, for example, when there are three pin insertion holes on the winch side, the number of pin receiving holes on the winch post side is two. Then, the range of angle setting is 3 × 2 = 6
As a result, the angle of the winch body or sub boom can be set more finely, improving the usability of the winch and improving work efficiency. Also, if the same angle setting as the conventional one is sufficient, the number of pin insertion holes on the winch side can be reduced to about half, so that the distance between the pin insertion holes can be made large, and therefore, materials such as FRP can be used. It is possible to mount a lightweight winch with high insulation using the.

〔Example〕

Hereinafter, an embodiment of a winch mounting structure for a bucket according to the present invention will be described in detail with reference to FIGS. 1, 2, and 3.

In the figure, reference numeral 1 is an aerial work vehicle adopting a winch mounting structure for a bucket according to the present invention. A turntable 2 is rotatably mounted on the vehicle body of the aerial work vehicle 1. A base end of an expandable telescopic boom 3 is rotatably and pivotally attached to the turntable 2. A pivot support base 7 is attached to the tip of the boom 3 by a leveling device (not shown) so as to be always held in a vertical state regardless of the hoisting operation of the boom 3. A bucket 5 is horizontally attached to the pivot base 7. A winch post 8 is attached to the upper end of the pivot base 7 so as to be rotatable in a horizontal plane. A winch 6 is pivotally attached to the winch post 8 so as to be vertically swingable in a vertical plane.

The winch 6 includes a winch body 6a including a drive unit and a drum, a pair of flange portions 6b and 6b having upper ends attached to left and right ends of a lower surface of the winch body 6a, and a sub-boom 10 attached to the winch body 6a. , The wire 11 that is unwound from the winch body 6a and wound up
And a hook 12 attached to the tip of the wire 11 and suspended from the tip of the sub-boom 10. The winch body 6a is pivotally attached to the front upper ends of the flange portions 6b and 6b and the upper end of the winch post 8 by a pivot shaft 13 to allow the winch post 8 to swing up and down in a vertical plane with respect to the winch post 8. It is attached. The winch post 8 has a circular arc shape about the pivot 13.
Individual pin receiving holes 8a, 8a are provided. In the flange portions 6b and 6b of the winch body 6a, a plurality of pin insertion holes 6c (three holes are provided in the present embodiment in the same arc shape as the pin receiving holes 8a and 8a around the pivot 13 are shown. ) Is provided. By aligning one of the pin receiving holes 8a, 8a of the winch post 8 with any one of the pin insertion holes 6c of the flange portions 6b, 6b, and inserting the stopper pin 9 into both the matched holes, the winch body is formed. 6a can be fixed to the winch post 8 at an arbitrary angle. Accordingly, the sub boom 10 can be held at a predetermined angle.

Hereinafter, the operation of the winch mounting structure for a bucket according to the present invention will be described based on the above configuration.

That is, the winch 6 mounting structure for the vicinity of the bucket 5 mounted on the tip of the boom 3 of the work platform 1 has a winch post 8 standing on the pivot base 7 of the boom 3 and the bucket 5. Flange portions 6b, 6b extending to the lower left and right side portions of the winch body 6a are made to face the side portions of the winch post 8, and the pin insertion holes 6c, 6c of the stopper pin 9 formed in the flange portions 6b, 6b. One of the 6c and one of the two pin receiving holes 8a, 8a formed in the side portion of the winch post 8 are aligned with each other, and as shown in FIG. When the winch 6 is fixed to the winch post 8 by inserting the pin 9, when the number of the pin insertion holes 6c, 6c, 6c is the same as the conventional number, for example, three, the pin receiver on the winch post 8 side is received. Hole 8
Assuming that the number of a and 8a is two as shown in the above embodiment, the range of angle setting is 3 × 2 = 6, and the angle setting of the winch body 6a or the sub boom 10 is performed on the flanges 6b and 6b. It is possible to set the angle twice as many as the number of pin insertion holes 6c to be installed. Therefore, the angle can be set more finely than the conventional one, and the winch 6 is easier to use and work efficiency is improved. To do. Further, if the same angle setting as the conventional one is sufficient, the number of pin insertion holes 6c on the winch 6 side can be halved. Therefore, since the distance between the pin insertion holes 6c, 6c, 6c formed in the flange portion 6b can be widened, it is possible to mount the winch 6 which is made of FRP or the like and is lightweight and highly insulated. Become.

[Effect of device]

As described in detail above, the present invention provides a flange pivotally mounted in a vertical plane on a winch post mounted near a bucket mounted on the tip of a boom and a drive mounted on the upper end of the flange. In an aerial work vehicle including a winch body including a winch body having a portion and a drum, and a sub-boom attached to the winch body, at least two pin receiving holes are formed in the winch post. In addition, a plurality of pin insertion holes are provided in the flange portion, one of the two pin receiving holes is aligned with one of the plurality of pin insertion holes, and stopper pins are inserted into both the aligned holes. Since the winch body is configured to be fixed to the winch post at a predetermined angle, if the number of pin insertion holes provided on the winch side is the same as the conventional one,
For example, if there are three pin insertion holes on the winch side,
Assuming that there are two pin receiving holes on the winch post side, the range of angle setting is 3 × 2 = 6, which enables finer angle setting of the winch body or sub boom, which makes the winch easier to use. And work efficiency is improved. Also, if the same angle setting as in the past can be used, the number of holes on the winch side can be halved, so the distance between holes can be made large, and therefore high insulation using a material such as FRP can be used. It has various excellent effects such as the ability to mount a lightweight winch.

[Brief description of drawings]

FIG. 1 is a side view showing an example of an aerial work vehicle adopting a winch mounting structure for a bucket according to the present invention, FIG. 2 is a perspective view showing an essential part of the winch mounting structure for a bucket, and FIG. 3 is a winch body. And FIG. 4 is an explanatory view showing the structure of a winch post, and FIG. 4 is an explanatory view showing an example of a conventional winch mounting structure for a bucket. 1 ... Aerial work vehicle, 5 ... Bucket, 6 ... Winch,
6a ... winch body, 6b ... flange part, 6c ...
Pin insertion hole, 7 ... Pivot base end, 8 ... Winch post,
8a ... pin receiving hole, 9 ... stopper pin, 10 ...
Sub boom, 11 …… Wire, 12 …… Hook, 13
……pivot.

Claims (1)

[Scope of utility model registration request] 1. A flange pivotally mounted in a vertical plane on a winch post mounted in the vicinity of a bucket mounted on the tip of a boom, and a drive unit and a drum mounted on the upper end of the flange. In an aerial work vehicle including a winch composed of a winch body and a sub-boom attached to the winch body, at least two pin receiving holes are formed in the winch post, and the flange portion is formed. A plurality of pin insertion holes are provided in one of the two pin receiving holes, and one of the plurality of pin insertion holes is aligned with each other. A winch mounting structure for a bucket, characterized in that it is fixed to the winch post at an angle of.