JPH082883A - Outrigger - Google Patents

Abstract

PURPOSE:To eliminate the need of laying a plate piece under an earth plate even if an outrigger is used on any soft ground by providing an auxiliary earth plate which is foldably installed on the peripheral edges of the earth plate while facing downward and is earthed together with the earth plate so as to support a load. CONSTITUTION:An auxiliary earth plate 3 is installed on the peripheral edge of an earth plate 2 below a jack inner cylinder 1 through a hinge mechanism 6 comprising a hinge pin 7, a spring 8, etc. The earth plate 2 and the auxiliary earth plate 3 are connected to each other through the hinge pin 7, so that only the lower side of the auxiliary earth plate 3 can be bent. Furthermore, as the hinge 7 is provided with the spring 8 side by side so as to expand the auxiliary earth plate 3 by the reaction force of the spring 8, the plane flush with the earth plate 2 can be formed. Accordingly, even if an outrigger is used on any soft ground, the need of laying a plate piece under the earth plate 2 can be eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outrigger applied to a crane vehicle and others.

[0002]

2. Description of the Related Art FIG. 3 is an explanatory view of a conventional outrigger used in a crane vehicle. In the figure, when the crane of the crane vehicle is used, the grounding plate 2 attached to the lower part of the jack inner cylinder 1 of the outrigger is grounded to the ground to keep the crane vehicle stable. Reference numeral 5 in the drawing is an outer jacket of the outrigger jack.

[0003]

In the conventional outrigger as described above, since the outrigger is stored in the crane vehicle when not in use, the area of the ground plate 2 is limited and cannot be large. For this reason, the ground plate 2 can be used like when using a crane vehicle on soft ground.
If the effective area is insufficient, it is necessary to spread the ground area of the ground plate 2 by laying a plate material such as wood, a concrete plate, or an iron plate under the ground plate 2 to stably ground the outriggers.

[0004]

SUMMARY OF THE INVENTION An outrigger according to the present invention is intended to solve the above-mentioned problems, and in an outrigger that grounds a ground plate to support a load, the outrigger can be folded downward to the peripheral edge of the ground plate. It is characterized in that it is equipped with an auxiliary ground plate that is mounted and supports the load by grounding together with the ground plate.

[0005]

That is, in the outrigger according to the present invention, the auxiliary ground plate is foldably attached downward to the periphery of the ground plate of the outrigger that grounds the ground plate to support the load, and grounds the load together with the ground plate. When the outrigger is used, the auxiliary grounding plate attached to the peripheral edge of the grounding plate expands and grounds when the grounding area of the grounding plate is expanded. When the outrigger is not needed, the auxiliary ground plate is folded downward and stored.

[0006]

1 and 2 are explanatory views of an outrigger according to an embodiment of the present invention. In the figure, the outrigger according to the present embodiment is used for a crane vehicle and the like. When a crane such as a crane vehicle is used as shown in FIG. 1, a contact mounted on the lower portion of the jack inner cylinder 1 of the outrigger is used. The ground plane 2 is grounded to the ground to keep a crane vehicle or the like stable. In this outrigger, the hinge mechanism 6 is provided on the periphery of the ground plate 2 below the inner jack 1 of the jack.
Auxiliary ground plate 3 is attached via. A storage guide 4 for the ground plate 2 is provided on the outer jacket 5 of the outrigger. The hinge mechanism 6 includes a hinge pin 7 and a spring 8.
And the like, and the ground plate 2 and the auxiliary ground plate 3 are connected via the hinge pin 7 so that the auxiliary ground plate 3 can be bent only downward. A spring 8 is attached to the hinge pin 7.
And the auxiliary grounding plate 3 is developed by the reaction force of the spring 8 to form the same plane as the grounding plate 2.

As shown in FIG. 2, when the outrigger is not required, the inner jack 1 of the outrigger is retracted into the outer jack 5 of the outrigger so that the auxiliary ground plate 3 abuts on the storage guide 4 of the ground plate 2. It is folded down and stored. When the outrigger is used, when the auxiliary ground plate 3 comes out of the storage guide 4 of the grounding plate 2 by pushing the outrigger jack inner cylinder 1 out of the outrigger jack outer cylinder 5 and expanding it. Spring 8
And is grounded together with the ground plate 2 to form the same ground plane. The auxiliary ground plate 3 is the same as the ground plate 2 4
It may be attached to all sides or only to one to three sides.

In conventional outriggers, the outrigger is stored in the crane vehicle when not in use,
The area of the ground plate is limited and cannot be large.
For this reason, when the effective area of the grounding plate is insufficient, such as when using a crane vehicle on soft ground, laying a plate material such as wood, concrete plate, or iron plate under the grounding plate It is necessary to expand the grounding area to stably ground the outrigger, but in this outrigger, the folding auxiliary grounding plate 3 is provided around the grounding plate 2 attached to the lower part of the jack inner cylinder 1, the hinge pin 7, the spring 8 and the like. When the outrigger is used, the grounding plate 2 descends from the inside of the storage guide 4 when the outrigger is used, and the auxiliary grounding plate 3 coupled to the peripheral edge of the grounding plate 2 via the hinge pin 7 serves as the spring 8. The grounding plate 2 is held and grounded by being expanded by the reaction force in a state where the grounding area of the grounding plate 2 is enlarged. When the outrigger is not needed, the grounding plate 2 is drawn into the storage guide 4 so that the auxiliary grounding plate 3 is folded and stored. In this way, when the outrigger is unnecessary, the size of the ground plate 2 can be reduced and stored, and when used, the ground area of the ground plate 2 can be approximately doubled. Since the grounding area of the grounding plate 2 is enlarged, the outriggers can stably ground even on soft ground, and it is not necessary to lay a plate material or the like under the grounding plate 2.

[0009]

The outrigger according to the present invention is constructed as described above, and when the outrigger is used, it is grounded in a state where the grounding area of the grounding plate is enlarged, so that the grounding plate is used even when used on soft ground. There is no need to lay a board underneath.

[Brief description of drawings]

1A is a front view of an outrigger according to an embodiment of the present invention, FIG. 1B is a plan view of a ground plate thereof, and FIG. 1C is a sectional view thereof.

FIG. 2 (a) is an explanatory view of its operation.

FIG. 3 (a) is a front view of a conventional outrigger, and FIG. 3 (b) is a detailed view of essential parts thereof.

[Explanation of symbols]

 1 Jack inner cylinder 2 Ground plate 3 Auxiliary ground plate 4 Ground plate storage guide 5 Jack outer cylinder 6 Hinge mechanism 7 Hinge pin 8 Spring

Claims (1)

[Claims] 1. An outrigger for supporting a load by grounding a ground plate, comprising an auxiliary ground plate that is foldably attached to a peripheral edge of the ground plate and is grounded together with the ground plate to support a load. A characteristic outrigger.