JPS6211718Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an outrigger that ensures the stability of the vehicle body during work.

Generally, a vehicle body such as a truck crane is equipped with a plurality of outriggers on both sides, and these outriggers include an outrigger beam that can extend from an outrigger outer cylinder provided on the vehicle body to the side of the vehicle body, and a It consists of a vertical cylinder provided at the tip and a circular ground plate attached to the rod tip of the vertical cylinder. The outrigger with the above structure extends the outrigger beam from the car body and extends the rod of the vertical cylinder to touch the ground plate during work, thereby increasing the width of the car body and making it easier to move the car body during work. It is designed to ensure stability. Also,
When not in use, such as when driving, the vertical cylinder rod is retracted to raise the ground plate, and the outrigger beam is stored in the outrigger outer cylinder. The ground plate can be stored on the vehicle body side.

Incidentally, the stability performance of the vehicle body in the outrigger is determined by the ground contact area of the ground plate and its protruding width. Therefore, in order to improve the above-mentioned stability performance, it is desirable to increase the extension width of the outrigger beam, that is, the extension width of the ground plate, and to make this ground plate large to ensure a large ground contact area. However, this ground plate has a restriction that it must be stored within the vehicle width dimension of the vehicle body when not in use. Therefore, in order to ensure a large overhang width and ground contact area of the ground plate within this constraint, the ground plate is conventionally formed into a polygonal or oval shape instead of a circular one, and when not in use it is The size of the ground plate was set so that the side edge of the ground plate coincided with the width line of the vehicle body.

However, the ground plate is attached to the rod of the vertical cylinder via a universal joint in order to cope with all conditions of the ground plane. Therefore, even if the side edges of the ground plate are aligned with the vehicle width line and the ground plate is stored within the vehicle width dimension, the ground plate will rotate due to vibrations during driving and will not touch the ground. A part of the plate protrudes from the vehicle width line above,
There was a problem that the ground plate could not be reliably stored and maintained within the vehicle width dimension. For this reason, in the past, the ground plate was configured to be removable from the vertical cylinder, and removed from the vertical cylinder when not in use, but since this ground plate is heavy, it is difficult to attach or remove it. There was a problem that made it impossible to do it easily.

This idea was made based on these circumstances, and its purpose is to ensure a large ground contact area and overhang width of the ground plate, and also to allow the ground plate to be removed from the vertical cylinder when not in use. To provide a ground plate fixing device for an outrigger that can be reliably stored and held within a vehicle width dimension.

In other words, this invention is based on an outrigger equipped with a polygonal or elliptical ground plate, and when stored in the lower part of the outrigger outer cylinder, a predetermined plate side or width center line of the ground plate is aligned with respect to the vehicle width line of the vehicle body. The present invention is characterized in that an abutting member is provided in parallel to abut the ground plate, and the abutting surface of the abutting member with the ground plate is made of an elastic body.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

In the figure, 1 is the body of a truck crane, and 2 and 2 are wheels of this body 1. A swivel base 3 is provided on the vehicle body 1 and is capable of rotating. This swivel table 3 is provided with a multi-stage telescopic boom 4 whose base end is pivotably supported so as to be able to raise and lower, and this boom 4 can be raised and lowered by a raising and lowering cylinder 5 consisting of a hydraulic cylinder. Also, 6 is a lifting hook,
7 is a lifting wire. Note that 8 is a working driver's seat for crane work provided on the swivel base 3, and 9 is a traveling driver's seat for the vehicle body 1.

Outriggers 10 are provided on both sides of the vehicle body 1.
... are provided, and their configurations will be explained below. Reference numeral 11 denotes an outrigger outer cylinder installed in the vehicle body 1, and an outrigger beam 12 is housed in the outrigger outer cylinder 11 so as to be able to extend to the side of the vehicle body 1. In addition, outrigger beam 1
The extension and storage of 2 is performed by a beam cylinder (not shown) consisting of a hydraulic cylinder. A vertical cylinder 13 made of a hydraulic cylinder is attached to the protruding tip of the outrigger beam 12. Rod 1 of this vertical cylinder 13
A polygonal, eg, square, ground plate 15 is attached to the tip of 4, and this ground plate 15 is attached via a universal joint, eg, a ball joint 16, as shown in FIG. Therefore, the ground plate 15 is rotatable relative to the rod 14.

A contact member 17 is attached to the lower part of the outrigger outer cylinder 11. This contact member 17
has a contact surface 18 that is parallel to the vehicle width line X of the vehicle body 1 shown in FIGS. 2 and 3, and when stored, the plate side 15a of the ground plate 15 is aligned along the contact surface When brought into contact, this plate side 15a can be positioned parallel to the vehicle width line X. In addition, in such a stored state, the ground plate 15 has a size such that the plate side 15b on the opposite side parallel to the plate side 15a coincides with the vehicle width line X and can be stored within the vehicle width dimension. It is set. The contact surface 18 is formed of an elastic body 19 made of rubber or the like, and can be elastically deformed by contact with the ground plate 15.

In one embodiment with such a configuration, the outrigger beam 12 is extended from the outrigger outer cylinder 11 during crane work, and the rod 14 of the vertical cylinder 13 is extended to connect the ground plate 15.
This is to ground the With this, the car body 1
Since the width can be increased, the stability of the vehicle body 1 during crane work can be ensured. When the vehicle is not in use, such as when driving, the rod 14 is retracted to raise the ground plane 15, and then the ground plate 15 is stored on the side of the vehicle body 1 along with the storage of the outrigger beam 12.
At this time, the plate side 15a of the ground plate 15 is brought into contact with the abutment member 17. As a result, the ground plate 15 is positioned so that its plate side 15a is parallel to the vehicle width line X.
Also, the plate side 15b on the opposite side is the vehicle width line
It is stored within the vehicle width dimension in a state that matches the top. Therefore, if the ground plate 15 is retracted in this way, the rotation of the ground plate 15 is prevented by the abutting surface 18, so that even if vibrations are applied during driving, the grounding plate 15 will not touch the ground. The plate 15 does not rotate as shown by the imaginary line in FIG. 3 and its corners do not protrude from the vehicle width line X, and the ground plate 15 can be reliably stored and maintained within the vehicle width dimension. can. Furthermore, since the abutting surface 18 is formed of an elastic body 19,
The rattling of the ground plate 15 due to the above-mentioned vibration can be prevented by its elastic deformation, and the noise caused by this rattling can also be prevented.

Further, if the ground plate 15 is strongly pressed and brought into contact with the contact surface 18, the plate side 15a of the ground plate 15 is brought into contact with the contact surface 18 by utilizing the elastic deformation of the contact surface 18. This also has the advantage of preventing the ground plate 15 from descending due to oil leakage from the cylinder.

Furthermore, in this embodiment, the ground plate 1
5 is formed in a square shape, and when stored, the plate side 15b is aligned with the vehicle width line X, so that this ground plate 15
A large ground contact area and overhang width can be secured,
The stability performance of the vehicle body 1 is high.

Note that this invention is not limited to the above embodiment. For example, as shown in FIG. 4, the contact surface 18 may be provided with a groove 20 into which the side of the ground plate 15a can fit. Further, the ground plate is not limited to a square shape, but may have a polygonal shape such as a rectangular shape. If the ground plate is rectangular, it is sufficient to store and hold the ground plate with its long side aligned with the vehicle width line X. Further, the polygonal ground plate 20 is not limited to a quadrilateral shape such as a square or a rectangle, but may be a regular hexagonal ground plate 20 as shown in FIG. shaku na 6
It may be a rectangular ground plate 21. In this case, when storing, the ground plate 21 is sandwiched between the pair of contact members 22, 22 and brought into contact with each other, and the width center line Y is parallel to the vehicle width line
It is sufficient to store it so that 1a is in contact with the vehicle width line X.

Furthermore, the ground plate does not have to be polygonal; it may be an oval ground plate 23 as shown in FIG. It may be formed into an arc shape that matches the edge, and the width center line Y thereof may be parallel to the vehicle width line X, so that the side edge on the vehicle width line X side is in contact with the vehicle width line X. Further, in this embodiment, the outriggers of a truck crane have been described, but the present invention is applicable not only to truck cranes but also to outriggers of vehicle-type excavators and the like.

As explained above, this invention, in an outrigger equipped with a polygonal or elliptical ground plate, allows a predetermined plate side or width center line of the ground plate to be aligned with the vehicle width of the vehicle body when stored in the lower part of the outrigger outer cylinder. The present invention is characterized in that an abutting member is provided parallel to the line and abuts the ground plate, and the abutting surface of the abutting member with the ground plate is made of an elastic body. Therefore, when storing the ground plate, if the ground plate is brought into contact with the abutment member and the side edge of the plate is aligned with or touches the vehicle width line, the ground plate can be stored in a conventional circular shape. It is possible to secure a larger ground contact area and extension width compared to the above-mentioned vehicle, and the abutting member can prevent rotation of the ground plate, so that part of the ground plate may be damaged by rotation due to vibrations when the vehicle is running. This ground plate can be reliably stored and maintained within the vehicle width dimension without protruding from the width line. Furthermore, since there is no need to remove the ground plate during storage, storage becomes easy. Moreover, since the contact surface of the contact member with the ground plate is made of an elastic material, it absorbs the impact when the ground plate contacts the contact member.
In addition, even if vibrations are transmitted while driving, the ground plate is prevented from rattling and no noise is generated. In addition, in this contact state, the elastic body contacts the ground plate with strong frictional force, so the vertical cylinder oil is This frictional force has the effect of preventing the ground plate from descending due to leakage or the like.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention, in which Figure 1 is a side view of a truck crane, Figure 2 is a side view of an outrigger, and Figure 3 is a side view of the outrigger.
4 to 7 show other embodiments of the invention, FIG. 4 is a side view of the abutment member, and FIGS. 5 to 7 show other ground plates, respectively. FIG. 1...Vehicle body, 11...Outrigger outer cylinder, 12...
... Outrigger beam, 13 ... Vertical cylinder, 14 ... Rod, 15 ... Ground plate, 1
6... Ball joint (universal joint), 17, 22, 24...
... Contact member, 18, 25 ... Contact surface, 19 ... Elastic body, X ... Vehicle width line, Y ... Width center line.

Claims (1)

[Scope of utility model registration request] An outrigger outer cylinder provided on the vehicle body, an outrigger beam that extends from the outrigger outer cylinder to the side of the vehicle body during work and is stored inside the outrigger outer cylinder when not in use, and an outrigger beam provided at the projecting tip of the outrigger beam. vertical cylinder,
It is attached to the tip of the rod of this vertical cylinder via a universal joint, and when working, it is grounded by extending the rod, and when not in use, the rod is retracted, and when the outrigger beam is stored, it is stored on the vehicle body side. In an outrigger configured with a square or oval ground plate, a predetermined plate side or width center line of the ground plate is placed parallel to the vehicle width line of the vehicle body when stored at the bottom of the outrigger outer cylinder. A ground plate fixing device for an outrigger, characterized in that a contact member is provided with which the ground plate comes into contact, and a contact surface of the contact member that contacts the ground plate is made of an elastic body.