JPS5819495B2 - Outrigger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an outrigger-leg plate connection device.

In order to stabilize the loading/unloading machine such as a truck crane, a l-IJ gir device as shown in Fig. An inner box 3 is driven to protrude and store to the side of the vehicle frame 1 by a hydraulic cylinder (not shown) fitted in a movable manner, and consists of a fixed side 4 and a movable side 5, with the fixed side 4 fixed to the tip of the inner box 3. An outrigger device A is provided on both the front and rear sides of the vehicle frame 1, and includes a vertical jack 6 and a leg plate 7 arranged in relation to the lower end of the movable side 5 of the vertical jack 6.

This outrigger device A connects the inner box 3 and moving side 5 to the outer box 2 and fixed side 4 when the traveling loading machine is moving.
It is stored inside and stored as small as possible so as not to hinder the traveling movement of the traveling load dumping machine, and when in use, the inner box 3 and moving side 5 are extended from the outer box 2 and fixed side 4 so that the traveling load dumping machine can be stored as small as possible. It must provide sufficient stability to the machine.

Furthermore, the leg plate 7 of this outrigger device A is
When the device A is used, the ground contact area must be sufficiently large so that the leg plate 7 does not sink even on soft ground, etc. even when it is firmly connected to the ground.

Therefore, even when the outrigger device A is in the retracted state, the leg plate 7 protrudes a considerable amount from the outer end C of the jacking device 6.

This has the disadvantage of increasing the width of the outrigger device A when it is stored.

Therefore, the leg plate 7 of the outrigger device A as described above is
When the outrigger device A is stored, it is removed from the moving side 5 of the vertical jack 6, and when the outrigger device A is used, it is disposed on the moving side 5 of the vertical jack 6.

However, the installation and removal of such leg plates has the disadvantage that removing them requires fatigue on the operator due to the large weight of the leg plates 7, and that it is slow to install and store the outrigger device of the traveling material dumping machine.

The present invention is aimed at increasing the amount of protrusion of the leg plate 7 from the outer end C of the vertical jack 6 in the retracted state without removing the leg plate 7 of the above-mentioned outrigger device from the moving side 5 of the vertical jack 6. This is what was done.

Embodiments of the present invention will be described in detail below with reference to FIG. 2 and subsequent figures.

The symbols used in FIG. 1 will be used as they are.

2 to 4, the vertical jack 6 has a fixed side 4 with a rectangular cross section, a movable side 5 with a rectangular cross section that is telescopically fitted into the fixed side 4, and a radical 9 on the cylinder 8 side of the fixed side 4.
It is composed of a double-acting hydraulic cylinder 12 which is connected to the movable side 5 and whose tip end of a piston rod 10 is connected to the moving side 5 by a horizontal support shaft 11 that is orthogonal to the longitudinal direction of the vehicle frame 1.

The horizontal support shaft 11 further pivotally connects the support 13 to the lower end of the moving side 5 of the vertical jack 6.

The lower end of the support body 13 forms a support portion 15 having a pair of surfaces 14, which will be described later.

The longitudinal direction of the support part 15 of the support body 13 (with respect to the vehicle frame 1)
Brackets 16 and 16' are disposed on the end face, and are arranged vertically opposite to each other, narrowing the axis of the horizontal support shaft 11.

Support shafts 18 and 18', which are perpendicular to the horizontal support shaft 11 in plan view, are provided on the upper end row side of the brackets 16 and 16', respectively.

The brackets 16, 16' are arranged with sufficient relative spacing to be located on the outside of the fixed side 4 when the vertical jacking device 6 is retracted (when the movable side 5 is retracted into the fixed side 4). .

The leg plate 7 is provided with brackets 1717' facing each other at appropriate intervals, and the brackets 17.17'
The upper ends of the two are respectively pivoted by the support shafts 18 and 18'.

With this relationship, the leg plate 7 disposed at the lower end of the vertical jack 6 can swing in all directions.
In particular, the vertical jack 6 swings toward the outer end of the vertical jack 6.
Even when the leg plate I is stored, it is possible until the upper surface 19 of the leg plate I abuts against the fixed side 4.

The upper surface 19 of the leg plate 1 is provided with a pair of pairs of surfaces 20 that are opposed to the pair of pairs of surfaces 14 of the support portion 15, and these pairs of pairs of surfaces 14 and 20 are parallel to each other. , the leg plate 7, the contralateral surface 20.14, the support body 13,
The horizontal support shaft 11 and the lower end of the movable side 5 form a transmission path to the vertical jack 6 in this order, and excessive force is transmitted to the brackets 17 and 17' of the leg plate 7 and the brackets 16 and 16' of the support body 13.
and the support shafts 18, 18'.

For this purpose, it is preferable that the support shafts 18, 18' provide a loose connection between the leg plate 7 and the support body 13, and that the support shafts 18, 18' have only the function of suspending the leg plate 7 and the function of a swinging fulcrum.

In the embodiment, this pair of surfaces 14.20 is used as a support shaft 18'
It is constructed as a pair of cylindrical surfaces centered on the axis of the cylinder.

The outrigger leg plate connection device of the present invention consists of an outer box attached to the vehicle frame, an inner box that is slidably inserted into the outer box and is driven to extend and retract toward the side of the vehicle body by a hydraulic cylinder, and a fixed side and a movable side. An outrigger device comprising a vertical jack whose fixed side is fixed to the tip of the inner box, and a leg plate connected to the lower end of the moving side of the vertical jack,
The relationship between the leg plate and the vertical jack movement side is established by sandwiching the horizontal support shaft between the support part of a support body that has a support part at the lower end and is pivotally connected to the vertical jack movement side by a horizontal support shaft that is orthogonal to the longitudinal direction of the vehicle frame. The brackets erected at 1 and the brackets erected at the leg plate are pivotally connected by support shafts perpendicular to the horizontal support axis in plan view, so that the leg plate can be moved along the vertical jack when the ARA t-IJ gar device is stored. Since the structure is configured so that it can be rotated to the vertical storage position, and since the supporting portion and the upper end of the leg plate are formed with opposing surfaces, when the outrigger device A is stored, the leg plate 7 can be rotated to a position along the vertical jack 6, By fixing there with an appropriate means, the amount of outward protrusion of the leg plate 7 can be made as small as possible, and the support shaft 18', which is the pivot point for the leg plate 7 to the vertical storage position, can be arbitrarily set. Since it can be placed in the upper position, it has the excellent effect of increasing the load clearance when the leg plate is retracted.

As shown in FIG. 5, when the vertical jacking device 6 is retracted under the outer end of the outer cylinder 2 and the inner cylinder 3 is contracted, the bracket 1 of the leg plate I is placed near the end of the contraction movement of the inner cylinder 3.
By providing an arm 21.21' that comes into contact with 7.17' and converts the contraction movement of the inner cylinder 3 into the retraction movement of the leg plate 7,
The leg plate 7 can be automatically brought to the use position and storage position according to the expansion and contraction movement of the inner cylinder 3.

Further, as shown in FIG. 6, when the movable side 5 is contracted, the lower end of the fixed side 4 of the vertical jack 6 and the brackets 17 and 17' of the ground plate 7 contact and move near the end of the contraction movement of the movable side 5. By providing abutment pieces 22 and 23 for converting the contraction movement of the side 5 into the retracting movement of the leg plate 7, the leg plate 7
can be automatically brought to the use position and storage position in accordance with the expansion and contraction movement of the movable side 5.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional outrigger device, FIG. 2 is a cross-sectional view of a vertical jack implementing the A-IJ gar leg plate connection device according to the present invention, and FIG. 3 is an explanatory diagram of a conventional outrigger device. An X-sectional view, FIG. 4 is an external view of the vertical jack, and FIGS. 5 and 6 are explanatory diagrams showing the development of the present invention. 2...Outer box, 3...Inner box, 4...
... Fixed side, 5 ... Moving side, 6 ... Vertical jack, 7 ... Leg plate, 15 ... Supporting part, 11 ...・Horizontal support shaft, 16, 16'...
...Bracket, 17,17'...Bracket, 18.18'...Spindle, 14,20...
...Anti-even face.

Claims (1)

[Claims] 1. An outer box attached to the vehicle frame, an inner box that is slidably inserted into the outer box and is driven to protrude to the side of the vehicle body by a hydraulic cylinder, and is composed of a fixed side and a movable side, with the fixed side at the tip of the inner box. Out IJ consisting of a fixed vertical jack and a leg plate related to the lower end of the moving side of the vertical jack
1. The leg plate and the vertical jack movement side are connected to the support part of a support body having a support part at the lower end and pivotally connected to the vertical jack movement side by a horizontal support shaft orthogonal to the longitudinal direction of the vehicle frame. The brackets erected across the horizontal support shaft and the brackets erected on the leg plate are pivotally connected by support shafts perpendicular to the horizontal support axis in plan view, so that the leg plate can be vertically jacked when the outrigger device is stored. A connecting device for an Ara I-IJ gar leg plate, characterized in that it is configured to be able to rotate to a vertical storage position along the axis of the arrow, and further comprises a pair of opposing surfaces on the support portion and the upper end of the leg plate.