JPH0737838U - Outrigger cylinder device for construction machinery - Google Patents

Abstract

(57) [Abstract] [Purpose] The work efficiency is improved by automatically changing the angle of the ground plate provided at the rod end of the outrigger cylinder device with a simple structure. [Structure] When the rod 6a of the outrigger cylinder device 4 is contracted, the ground plate 8 provided at the tip of the cylinder rod 6a via a spherical bearing 7 contacts the front side of the vehicle body and the rear side of the ground plate 8 is raised and tilted. Arm 9 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an outrigger cylinder device for a construction machine in which a ground plate is attached to an upper swing body via a spherical receiver.

[0002]

[Prior art]

 Conventionally, an outrigger cylinder device for a construction machine is capable of expanding and contracting or rotating in the vehicle body width direction so that the outrigger cylinder device is arranged as far away from the center of gravity as possible in order to enhance the stability of the vehicle body during work. A beam is provided, and a vertically expandable cylinder is attached to the front end of the outrigger beam, and the rod of this cylinder is extended downward to support the base machine body during operation. There is also a model in which an outrigger cylinder device is directly attached to the upper revolving structure so that it fits within the transportation limit width of the trailer.

Since the stroke of these outrigger cylinder devices is desired to be kept as small as possible in terms of strength and cost, the mounting height of the outrigger cylinder devices is also made as low as possible.

In addition, in the outrigger cylinder device, a ground plate is provided at the tip of the cylinder rod via a spherical receiver, and the ground plate is aligned with the ground without sinking into the ground even if the ground is slightly rough. There is a structure that aims to stabilize the aircraft.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned structure, when the construction machine is mounted on a trailer or the like and is transported by traveling by itself on a climbing platform that is suspended between the trailer and the ground, the angle of the climbing platform is generally between 15 degrees and 20 degrees. Even if the cylinder rod of the outrigger cylinder device is fully retracted when climbing, the ground plate installed at the tip of the cylinder rod may interfere with the climbing board. It had to be tilted and fixed. Also, in order to avoid this interference, it was necessary to mount the outrigger cylinder device with a large stroke at a height that did not interfere with the trailer board.

Therefore, the present invention can automatically change the angle of the ground plate attached via the spherical receiver when the cylinder rod of the outrigger cylinder device is contracted upward with a simple structure. As described above, it is an object of the present invention to provide an outrigger cylinder device for a construction machine capable of suppressing the stroke as small as possible without inclining the ground plate with a rope or the like.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an outrigger cylinder device for a construction machine, wherein a grounding plate is provided at the tip of a vertically expandable cylinder rod through a spherical surface receiver. When the cylinder rod is contracted, it is characterized in that it is attached to the ground plate, and an arm is attached to tilt and raise the outside of the ground plate of the vehicle body.

[0008]

[Action]

 As a result, when the cylinder rod of the outrigger cylinder device is contracted upwards, the arm contacts the upper surface of the grounding plate, and the outside of the grounding plate inclines upward from the spherical bearing part, which causes interference during climbing. Therefore, the stroke of the outrigger cylinder device can be kept small.

[0009]

【Example】

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

1 to 4 show a first embodiment of the present invention, in which a construction machine 1 is a crawler-type undercarriage 2 on which a base machine body 3 is rotatably mounted. An outrigger cylinder device 4 is fixed to the rear side of the machine body 3.

The outrigger cylinder device 4 includes a cylinder 6 supported by an outrigger frame 3 a fixed to the rear part of the base machine main body 3, and a rod 6 a extending from the cylinder 6 and a tip end of a rod 6 a that rotates through a spherical receiver 7. It has a ground plate 8 movably provided and an arm 9 provided at the lower end of the cylinder 6, and a part of the upper part of the cylinder 6 is built in the counterweight 5. The device 4 is provided at a position where it does not interfere with the crawler 2a of the lower traveling body 2 when the main body 3 turns.

The arm 9 is formed of an L-shaped plate material, and is attached to the front side of the vehicle body by a bolt 10 at a position in the vicinity of the spherical surface receiver 7 and in contact with the ground plate 8. When the rod 6a of the portion 6 is contracted, the tip of the arm 9 abuts on the front upper surface of the ground plate 8, and when the rod 6a is further contracted, the ground plate 8 is rotated by the spherical bearing 7, and the ground plate 8 is outside the vehicle body. The rear side is inclined upward.

The construction machine 1 configured as described above extends the rod 6a of the cylinder 6 to ground the ground plate 8 to stabilize the vehicle body during work, and contracts the rod 6a during traveling or turning. Lift the ground plate 8 upward to such an extent that it does not interfere with the ground. When transporting by a trailer or the like, when self-propelled on the slope of the board to the trailer, the rod 6a is further contracted, and the arm 9 is brought into contact with the upper surface of the ground plate 8 to bring the ground plate into contact. The rear side of 8 is tilted upward to prevent interference with the climbing platform. Also, when traveling or turning on a sloping ground, the rear side of the ground plate 8 is also inclined upward.

Therefore, it is easy to get on and off the trailer of the construction machine 1 or to climb a slope, and it is not necessary to lengthen the stroke of the cylinder 6, which is advantageous in terms of strength and cost. No need to waste the space of 5.

FIG. 5 shows a second embodiment of the present invention, in which the outrigger beams 22 and 22 are horizontally rotatably attached to the rear part of the base machine body 20 through the pins 21 and 21. Outrigger cylinder devices 23, 23 are provided at the tips of the outrigger beams 22, 22. A ground plate 26 is attached to the tip of the rod 24 of each outrigger cylinder device 23 via a spherical surface receiver 25, an arm 27 similar to that of the first embodiment is housed on the lower surface of the outrigger beam 22, and the outrigger beam 22 is stored rearward. In this state, the base machine body 20 is provided on the front side of the vehicle body.

As described above, in the case where the outrigger beam 22 can be rotated in the horizontal direction, a wide road width without obstruction on the left and right is required due to the relationship with the trailer equipped with this machine. Since it is necessary to avoid interference in the direction, the outrigger beam 22 is retracted backwards as shown in FIG.

[0017]

[Effect of device]

 As described above, according to the present invention, when the cylinder rod is contracted, an arm is provided that abuts on the ground plate provided on the tip of the cylinder rod of the outrigger cylinder device via the spherical bearing to raise and tilt the outside of the ground plate of the vehicle. Therefore, with a simple structure, it is possible to prevent the grounding plate from interfering with the ground when moving or turning on a sloping ground, and especially when it gets on and off the trailer, the grounding plate can be prevented from interfering with the boarding platform. . Further, the outrigger cylinder device can be shortened, which is advantageous in terms of strength and cost.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a construction machine showing a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part when the outrigger cylinder device is extended downward.

FIG. 3 is an enlarged view of a main part when the outrigger cylinder device is contracted upward.

FIG. 4 is a plan view of the construction machine showing the first embodiment of the present invention.

FIG. 5 is an explanatory view of main parts of a construction machine showing a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Construction machine, 2 ... Crawler type lower traveling body, 2a ... Crawler, 3 ... Base machine main body, 3a ... Outrigger frame, 4 ... Outrigger cylinder device, 5 ... Counterweight, 6 ... Cylinder, 6a ... Cylinder rod, 7 ... Sphere receiver, 8 ... Ground plate, 9 ... Arm

Claims (1)

[Scope of utility model registration request] 1. An outrigger cylinder device for a construction machine, wherein a ground plate is provided at a tip end of a vertically extendable cylinder rod through a spherical receiver, wherein the outrigger cylinder device has the ground plate when the cylinder rod is contracted. An outrigger cylinder device for a construction machine, comprising an arm which is brought into contact with a grounding plate to raise and tilt the outside of the vehicle body of the grounding plate.