JPH0243818Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an outrigger device for a wheeled crane vehicle.

2. Description of the Related Art As shown in FIG. 11, a conventional outrigger device of this type has a beam b extending sideways from the front and rear sides of a chassis frame a by means of a slide cylinder c.

Problems to be solved by the invention Because the conventional device has the above-mentioned configuration, the chassis frame a is twisted, making it necessary to strengthen the chassis frame a. It was difficult for the extended position of the jack cylinder d to be at the same distance from the center of rotation, and the lifting capacity varied around the entire circumference.

The present invention was developed in consideration of the above points, and the structure is simple and strong, and the suspension capacity can be made uniform around the entire circumference of the car body in the turning direction. An outrigger for a crane vehicle that allows the vehicle body to freely turn around the entire circumference without the wheels interfering with the outriggers during operation, and furthermore, the outriggers do not impede traveling maneuverability. The purpose is to provide a device.

Means and Effects for Solving the Problems The present invention provides the outrigger body 4 of the outrigger 3 via the swing circle 2 at the lower part of the vehicle body 1 in which the front wheels 52 and the rear wheels 53 are respectively movable up and down. , this outrigger main body 4 and the vehicle body 1 are connected via a swing drive mechanism, and a plurality of beam boxes 5 are provided in the outrigger main body 4 in a tomb-like manner in a tangential direction with respect to the swing center of the swing circle 2. At the same time, a beam 6 is provided in and out of each of these beam boxes 5, and a slide cylinder 7 for beam projection is provided in each beam box 5, and a grounding member A is provided at the tip of the beam 6. The outriggers 3 are housed in the beam box 5 and the entire outriggers 3 are housed within the wheel base, and the outriggers 3 are operated to levitate the vehicle body 1 and move the front wheels 52 and rear wheels 53 upward. . At this time, the outriggers 3 operate the slide cylinders 7 to cause the beams 6 to protrude over the same length.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 10. Reference numeral 1 denotes a vehicle body as a revolving frame, and an outrigger 3 is attached to the lower part of the vehicle body 1 via a swing circle 2. The outrigger 3 includes an outrigger body 4, and the outrigger body 4 has a swing circle 2.
Four beam boxes 5 are provided in a tomb-like manner in the tangential direction of the beam, and a beam 6 is housed in the beam box 5 so as to be removable. A slide cylinder 7 is housed in the beam 6, and the base end of the slide cylinder 7 is connected to a bracket 8 at the bottom of the beam box 5 by a connecting pin 9. It is connected to the tip by a connecting pin 11. A jack cylinder 12 is fixed at the tip of the beam 6.
A tread body 1 is attached to the rod 13 of the jack cylinder 12.
4 are attached, and these constitute the grounding member A.

Front support legs 15 are attached to the front left and right sides of the vehicle body 1 so as to be able to swing up and down, and the front support legs 15 support a front wheel structure 16. Rear support legs 17 are attached to the left and right rear sides of the vehicle body 1 so as to be able to swing up and down, and the rear support legs 17 independently support left and right rear wheel structures 18, respectively. Furthermore, a pair of front lift cylinders 17' are provided at the front side of the vehicle body 1 for vertically moving the front wheel structure 16, and a pair of front lift cylinders 17' for vertically moving the rear wheel structure 18 are provided at the rear side of the vehicle body 1. A rear lift cylinder 19 is provided.

The vehicle body 1 is provided with a drive section 20. Drive part 2
0 includes an engine 21, a power take-off section (PTO) 22, and a transmission section 23, and the output shaft end of the transmission section 23 is connected to the input shaft end of a front axle 25 of the front wheel structure 16 via a constant velocity joint 24. It has been done. A boom support bracket 26 is fixed to the vehicle body 1, and a first boom body 28 of a boom 27 is attached to the boom support bracket 26 by a shaft pin 29 so as to be able to rise and fall. A boom raising cylinder 30 is swingably attached to the vehicle body 1, and a rod 31 of the boom raising cylinder 30 is connected to a bracket 31' provided on the first boom body 28 by a pin 32.

The boom 27 is of a center-fold type, and the base boom structure 33
The front boom structure 34 is bendably connected to the front boom structure 34.

The base boom structure 33 is composed of first, second, and third boom bodies 28, 35, and 36, and the second and third boom bodies 35, 36 extend and contract with respect to the first boom body 28. .

The front boom structure 34 is composed of fourth, fifth, and sixth boom bodies 37, 38, and 39, and the fifth and sixth boom bodies 38, 39 extend and contract with respect to the fourth boom body 37. .

A support bracket 40 is fixed to the tip of the third boom body 36.
The base ends of the boom bodies 37 are connected by pins 41. One end of a link 42 is connected to the support bracket 40, one end of a link 43 is connected to the base end of the fourth boom body 37, and the other ends of both links 42, 43 are connected to each other. A boom cylinder 44 is connected at its base end, and a rod 45 of the boom cylinder 44 is connected to a bracket 46 provided on the fourth boom body 37 by a pin 47.

A sheave 48 is provided at the tip of the sixth boom body 39 of the front boom structure 34, and a hanging hook 49 is hooked with a wire to the sheave 48, and a hook 49 for hoisting and lowering the wire of the lifting hook 49 is attached to the vehicle body 1. winch 5
0 is provided.

51 is a driver's cab.

Next, the operation will be explained.

The crane vehicle travels using the front lift cylinder 1.
7' is extended to ground the front wheels 52 of the front wheel structure 16, and at the same time, the rear lift cylinder 19 is extended to ground the rear wheels 53 of the rear wheel structure 18, and the power of the engine 21 is transferred to the transmission section 23 at a constant speed. This is done by transmitting the signal to the front axle 25 via the joint 24 and driving the front wheel 52.

For load lifting work, first use beam cylinder 7.
is extended to project the beam 6 outward from the beam box 5, the jack cylinder 12 is extended to bring the tread body 14 into contact with the ground, and the vehicle body 1 is lifted to make the front and rear wheels 52, 53 float above the ground.

Next, the front and rear lift cylinders 17' and 19 are contracted, and the front and rear wheels 52 and 53 are raised via the front and rear support legs 15 and 17 and stored above the upper surface of the outrigger 3.

Next, a swing drive mechanism (not shown) provided in the vehicle body 1 is driven to move the boom 27 and the front and rear wheels 52, 53 together with the vehicle body 1 through the swing circle 2.
Turn the boom 2 and operate the luffing cylinder 30.
7, operate the boom cylinder 44 to raise the front boom structure 34, and then lower the front boom structure 33, 3.
4 first to third, fourth to sixth boom bodies 28, 3
5, 36, 37, 38, and 39 are extended, and the cargo B hung on the hanging hook 49 is handled as shown in FIG.

8 to 10 are other embodiments of the present invention, in which a guide hole 54 is provided along the longitudinal direction on the side of the beam box 5, and a guide pin 55 provided on the beam 6 is guided. inserted into the hole 54,
Attach the slide cylinder 7 to a bracket 56 on the top surface of the outrigger body 4 with a pin 57, connect the rod 10 of the slide cylinder 7 to a bracket 58 provided on the tip side of the beam 6 with a pin 59, and attach a grounding member to the tip of the beam 6. It has a structure with A,
The slide cylinder 7 is extended to project the beam 6 until the guide pin 55 of the beam 6 hits the end of the guide hole 54. After hitting the end of the guide hole 54, the beam 6 is bent against the ground, the grounding member A is grounded, and the crane body is moved. It was designed to increase the amount of excitement.

Effects of the invention The invention is as described above, with front wheels 52 and rear wheels 5
The outriggers 3 are attached to the lower part of the vehicle body 1 through the swing circle 2, in which the outriggers 3 are provided so as to be movable up and down, respectively.
The outrigger main body 4 is provided, and the outrigger main body 4 and the vehicle body 1 are connected via a swing drive mechanism.
By floating the front wheels 52 and rear wheels 53 upward, the front wheels 52 and rear wheels 53 do not interfere with the outriggers 3,
The vehicle body 1 can be arbitrarily turned in the entire circumferential direction.

Further, a plurality of beam boxes 5 are provided in the outrigger body 4 in a tomb-like manner in a tangential direction with respect to the turning center of the swing circle 2, and a beam 6 is provided in and out of each of these beam boxes 5. In addition, by providing a slide cylinder 7 for beam projection in each beam box 5 and providing a grounding member A at the tip of the beam 6,
By manipulating the slide cylinder 7 to cause the beams 6 to protrude over the same length, the grounding member A is positioned at an equal distance from the center of rotation of the swing circle 2 when the grounding member A is in contact with the ground. As a result, the suspension ability of the vehicle body 1 in the turning direction can be made uniform.

Furthermore, by housing the entire outrigger 3 within the wheelbase when the beam 6 is housed in the beam box 5, it is possible to eliminate the increase in vehicle width due to the outrigger 3, and the outrigger 3
This does not impede driving maneuverability. In addition, in this running position, it is possible to lower the center of gravity and lower the pitching inertia.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a crane vehicle equipped with an outrigger device according to the present invention, Figure 2 is a plan view of the same, and Figure 3 is a perspective view of a crane vehicle equipped with an outrigger device according to the present invention.
4 is a side view of the crane vehicle when the power unit is mounted, FIG. 5 is an explanatory diagram of the arrangement of the outrigger device according to the present invention, and FIG. 6 is the same side view.
Fig. 7 is a partially sectional bottom view of the same, Fig. 8 is a partially omitted side view of another embodiment of the present invention, Figs. 9 and 10 are explanatory views of the same operation, and Fig. 11 is a conventional outrigger. FIG. 2 is a partially omitted side view of the device. 1 is the car body, 4 is the outrigger body, 5 is the beam box, 6 is the beam, 7 is the slide cylinder, A
is a grounding member.

Claims (1)

[Scope of utility model registration request] The outrigger main body 4 of the outrigger 3 is provided via the swing circle 2 at the lower part of the vehicle body 1 in which the front wheels 52 and the rear wheels 53 are movable up and down, respectively, and the outrigger main body 4 and the vehicle body 1 are connected by a swing drive mechanism. The outrigger body 4
A plurality of beam boxes 5 are arranged in a tomb shape in a tangential direction with respect to the center of rotation of the swing circle 2.
In addition, a beam 6 is provided in each of these beam boxes 5 so that it can be taken in and out, and a slide cylinder 7 for beam projection is provided in each beam box 5.
At the same time, a grounding member A is provided at the tip of the beam 6.
An outrigger device for a crane vehicle, characterized in that the entire outrigger 3 is housed within the wheel base with the beam 6 housed in the beam box 5.