JPS5821805Y2 - Outrigger - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an outrigger.

Generally, in a concrete pump vehicle with a boom, when the boom is located in front of the chassis, the outriggers shown in FIGS. 1 to 3 are conventionally used to avoid overloading the front wheels due to the moment of the boom.

Figure 1 shows an outrigger a with a horizontally rotating arm b.
However, it is necessary to provide a support c to support the swing arm b, which makes the mechanism complicated.

In addition, in order to reduce the space required for storage, it is necessary to adopt a sliding mechanism in the rotating arm 5 section and attach the base plate d.
Two operations, turning and sliding, are required when setting the outriggers, making handling difficult.

Figure 2 is an example of an outrigger that can be folded vertically.
Since the link mechanism e is provided, it is complicated, and as the length of the outrigger a increases, the height above the ground when the outrigger is stored increases, and the appearance is also unfavorable.

FIG. 3 shows an example in which an auxiliary outrigger g is provided in front of the chassis frame f in addition to the outrigger a, but by pushing up the chassis frame f at such a position, the strength reliability of the chassis frame f is significantly impaired. This is not allowed for security reasons.

In Fig. 1.2.3, h is a swivel base and i is a chassis cab.

Therefore, the present invention aims to eliminate the above-mentioned drawbacks and provide an outrigger with a simple mechanism, good operability (and low cost), and its features include a curved outrigger outer box and , consisting of a curved slide arm slidably provided inside the outer box, and a plywood panel extendably provided at the end of the curved arm.

By curving the axis of the outrigger of this invention, when this outrigger is installed on a concrete pump truck with a boom or a crane truck, the outrigger can be extended to the front of the shear with one operation, resulting in excellent operability. There is.

In addition, the structure is simple as it does not have a ring mechanism etc.
Since the projecting direction is only horizontal, it can be operated manually without using a hydraulic cylinder, etc., and the manufacturing cost is low.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 4 is a plan view of the main parts of a concrete pump truck to which the outrigger of the present invention is applied, viewed from above, and Fig.
Figure 6 is a cross-sectional view taken along line v-v in Figure 5.
FIG. 7 is a sectional view taken along the line ■--■ in FIG. 5.

In Figures 4 and 5, a curved outrigger outer box 5 integral with the swivel base 4 is fixed to a subframe 3 with bolts 1, and the subframe 3 is connected to a truck shan 2 with a chassis cab 1 attached. connected.

The curved slide arm 6 to which the plywood outer box 8 is welded and fixed to its end has a curved axis with the same curvature as the outrigger outer box 5, and can freely slide inside the outrigger outer box 5. The slide stroke is defined by the slide stopper 9.

In FIG. 5, the slide stopper 9 is fixed to the outrigger outer box 5 with a stopper 10 so as not to slide, and is restrained in the vertical direction by a stopper 11.

Further, the slide arm 6 side of the slide stopper 9 plays a role of defining the slide stroke, and the east slide arm 6 and the slide stopper 9 can freely move relative to each other at any position other than the full stroke position.

The seat plate 14 is attached to the long end of the cylinder 13, and the plywood inner box 1 is moved by the hydraulic pressure applied to the cylinder 13.
2, it has a structure that allows it to move vertically and expandably within the plywood outer box 8.

Two holes 18 are provided in the side plate of the slide arm 6, and a stopper pin 15 is inserted during contraction and expansion to fix the position.

The stopper pin 15 can be pulled out by operating the lever 16, and is automatically inserted into the side plate hole 18 of the slide arm 6 by the spring IT.

Next, to explain its function, when the lever 15 is raised and the stopper pin 14 is pulled out from the slide arm 6, when the slide arm 6 is pulled out, the slide arm 6 moves diagonally along the axis line that curves inside the outrigger exterior 5. As it slides forward, the stopper pin 14 is inserted into the notch hole of the slide arm 6 at the position where it is caught by the slide stopper 9, and the base plate 14 is further set at a predetermined position by the hydraulic cylinder 13.

In this way, the outrigger function is achieved.

In this way, in this embodiment, the outrigger can be extended diagonally from the storage position by a single operation of pulling out the slide arm 6 from the curved outrigger outer box 5, and the structure is simple and the storage It takes up less space and has a cleaner appearance.

According to the present invention, a curved outrigger outer box, a curved slide arm slidably provided inside the outrigger outer box, and a plywood panel extendably provided at the end of the curved slide arm are used. This allows the outriggers to be extended by pulling out the slide arm, resulting in good operability and a simple mechanism.

[Brief explanation of drawings]

Figures 1 to 3 show a conventional outrigger installed on a concrete pump truck with a boom; 1 is a plan view thereof;
2 is a view as viewed from the arrow, and FIG. 4 is a plan view of an embodiment in which the outrigger of the present invention is attached to a concrete pump truck with a boom.
5 is a sectional view taken along the line V--V in FIG. 4, FIG. 6 is a sectional view taken in the direction of FIG. 5... Outrigger outer box, 6... Slide arm, 8... Base plate, 9... Slide stopper.

Claims (1)

[Scope of utility model registration request] An outrigger comprising a curved outrigger outer box, a curved slide arm slidably provided inside the outrigger outer box, and a plywood extendably provided at the end of the curved slide arm.