JPS6130923Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an auxiliary leg that is installed separately from a float that is provided on the outrigger itself, in particular, in an outrigger that is installed on a vehicle such as a truck crane.

FIG. 1 shows a part of what is usually called an H-type outrigger, and the outrigger consists of a box 1 fixed to the chassis of a vehicle,
A beam 2 is extendable and retractable, a jack cylinder 3 is fixed to the tip of the beam 2, and a float 4 is attached to the bottom end of the jack cylinder 3.
It is well known that when performing crane work on a truck crane, the entire device is stably supported on the ground G by extending the beam 2 and the jack cylinder 3. That's right. This is not a particular problem if the supporting force of the ground G in the outrigger is sufficient, but if the supporting force is insufficient, unexpected settling may occur.

Therefore, the conventional countermeasure was to insert a board between the stretched beam 2 and the ground, and to obtain a supporting reaction force through the board and the float 4. There is. However, since the board requires a considerably large size, the operator is forced to do considerable hard labor when handling it, and some kind of solution is desired.

This invention was made with the purpose of providing an auxiliary leg for an outrigger that is simple in structure and handling. a float, a pair of pawls, at least one of which is pivotally pivoted to the top of the script body and arranged opposite to each other, and a screw for swinging the pawls relative to the script body. It is.

The following is a detailed explanation of the second graphical example.
A generally triangular web portion 6 made of a steel plate, and flange portions 7 and 8 made of steel plates on both sides of the web portion 6.
and a top plate portion 9 made of a steel plate arranged in a T-shape at the upper end of the web portion 6, and these materials are welded together. There are claw bodies 1 on both sides of the upper part of the script body 5.
1 and 12 are arranged opposite to each other, and the claw bodies 11 and 12 are swingably attached to the script body 5 with pins. 13
is a screw rod that penetrates the script body 5 and has a flexible joint in the middle, one end of the screw rod 13 is screwed into the claw body 11 with a left-hand thread, and the other end is screwed into the claw body 12 with a right-hand thread. They are screwed together, and the other end has a square head so that a handle 15 can be attached and detached freely. float 10
is swingably attached to the lower end of the script body 5.

In the example shown in FIG.
It was in contact with the In this embodiment, the same effect can be obtained even if the other claw body (not shown, corresponding to the claw body 11 shown in the second figure) is fixed to the script body 5.

In either example, screw rod 13 or wing screw 1
6 is rotated to open and close both claw bodies 11 and 12. When using the outrigger, the beam 2 of the outrigger is extended and the lower flange of the beam 2 is used as shown in Fig. 2. As shown, the auxiliary leg is suspended from the beam 2 by both hooking claws 11 and 12, and a small board 17 is inserted between the float 10 and the ground G as necessary. Here, when the supporting force of the earth G is sufficient, sufficient support is achieved only through the float 4, but when it is insufficient, the float 4 sinks a little, but after a certain level of settling, As a result of the support provided by the auxiliary legs,
Further sedimentation is prevented, as in the previous case where all the blocks were made of wood.

As described above, this invention can be made lightweight, and the board can be made small, making it easy to handle.Furthermore, it can be attached and detached simply by operating the screw rod, making it extremely easy to handle. It's simple.

[Brief explanation of drawings]

FIG. 1 is a front view of a portion of an H-type outrigger equipped with auxiliary legs according to this invention, and FIG. 2 is a side view showing one embodiment of the auxiliary legs of this invention, taken along the line shown in FIG. 1. FIG. 3 is a partial side view of a schematic embodiment. 5: script body, 10: float, 11, 12: claw body, 13, 16: screw.

Claims (1)

[Scope of utility model registration request] a script body, a float pivotally attached to the lower end of the script body, and a pair of claw bodies disposed opposite to each other on the upper part of the script body, at least one of which is pivotally attached to the script body; An auxiliary leg for a vehicle outrigger, comprising a screw that swings the claw body relative to a script body.