JPH0313375B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a shovel for excavation that is equipped with a lifting device for lifting loads, etc. The purpose of this invention is to provide the excavator with a lifting device in addition to the original shovel function. To provide a shovel with a lifting device that can selectively utilize both functions.

Next, a first embodiment in which the present invention is embodied as a crawler type shovel will be explained with reference to FIGS. Caterpillar 2 is a base plate horizontally placed on both caterpillars 1 so as to be horizontally rotatable;
3 is the cockpit installed on the base plate 2, 4 is the cockpit 3
A swinging arm member supported on the base plate 2 on the side of the main arm, which is pivotably supported on the support member on the base plate 2 so as to be swingable in the vertical direction via a support shaft 5. 4a, and a sub arm 4 connected to the tip of the main arm 4a via a support shaft 6 so as to be swingable in the vertical direction.
b, and the main arm 4a is connected to a piston 7a of a first hydraulic cylinder 7 pivotally connected to the base plate 2 in order to swing the main arm 4a, while the sub arm 4b is It is connected to a piston 8a of a second hydraulic cylinder 8 which is pivotally connected to the main arm 4a to swing the sub arm 4b.

Reference numeral 9 denotes a bucket belt pivotally connected to the tip of the sub arm 4b so as to be able to swing vertically, and near the base end there is a bucket belt pivotally connected to the sub arm 4b for swinging the bucket belt 9. Pistons 10a of three hydraulic cylinders 10 are connected.

Reference numeral 11 denotes a boom of a lifting device T attached to the swinging arm member 4, and is formed to be extendable and retractable by a main boom 11a and a sub-boom 11b. It is pivotally supported on the side surface via a pin 12 so as to be able to swing in the vertical direction, and a pin 14 is attached to the sub arm 4b.
It is connected via a pin 15 to a piston 13a of a fourth hydraulic cylinder 13 which is pivotally connected via a pin 15,
When the piston 13a moves forward or backward, the boom 11
is swung up and down, and when the swinging arm member 4 is bent or extended, the intersection angle between the boom 11 and the fourth hydraulic cylinder 13 is expanded or contracted using the pin 15 as a fulcrum.

Reference numeral 16 denotes a rope-like member such as a wire rope that is wound and unwound to raise and lower the load, and its base end is wound around a winch (not shown) disposed on the base plate 2. , its tip side is bent at a lifting fulcrum a provided at the tip of the boom 11 in order to guide the cable member 16 and define a bending position where the tension direction of the cable member 16 is changed from an inclined direction to a vertical direction. A hanging member 17 such as a hook or a clamp for suspending cargo is attached to the tip of the cable member 16.

The lifting fulcrum a is disposed so as to be movable in the direction of the bent portion of the bent swinging arm member 4,
During lifting work, with the swinging arm member 4 bent, the sub-boom 11b of the boom 11 is extended, and the lifting fulcrum a is placed ahead of the bent part of the bent swinging arm member 4, and the cargo is lifted. It can be performed.

Next, the operation and effects of the first embodiment having the above-described configuration will be explained.

In this example, the swinging arm member 4, which is formed to be bendable and has a bucket bag 9 attached to its tip, has a hanging member 17 for suspending a load, and this hanging member 1.
7 is attached to the tip and is operated to wind up and unwind in order to raise and lower the load;
A boom 11 of a lifting device T having a boom 11 provided at its tip with a lifting fulcrum a for guiding this cable member 16 and changing the tension direction of the cable member 16 is pivotably mounted. , the lifting fulcrum a is disposed so as to be movable in the direction of the bent portion of the bent swinging arm member 4.

For this reason, the swing arm member 4 and bucket belt 9
It is possible to selectively and accurately carry out two types of work: shovel work by the machine and lifting work by the lifting device T.

In particular, when the swinging arm member 4 is bent and the bucket 9 is in contact with the ground (see Fig. 2), the lifting device T is supported by the swinging arm 4 and the bucket 9, so that it is difficult to lift cargo, etc. The fourth hydraulic cylinder is a fulcrum that can stabilize the supporting state and adjust the swinging of the boom 11 by expanding and contracting the bending angle of the main arm 4a and the sub-arm 4b and the swinging angle of the main arm 4a. By displacing the pin 15 that serves as a pivot point for the boom 13 and the pin 12 that serves as a pivot point for the main boom, the range of movement adjustment of the lifting fulcrum a of the boom 11 can be significantly expanded, and the lifting capacity of the lifting device T can be increased. There is an effect that can be enhanced in cooperation with the swing arm member 4.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. In this row, the boom 11A is pivoted to the sub arm 4bA of the swing arm member 4A via a pin 12A. Along with boom 11
A fourth hydraulic cylinder 13A for swinging A is pivotally connected to the main arm 4aA via a pin 14A.

The functions and effects of the second embodiment are explained in the first embodiment.
Since it is almost the same as the embodiment, its explanation will be omitted.

That is, the present invention provides a swinging arm member that is bendable and has a bucket attached to its tip.
A hanging member for suspending a load, a rope-like member to which the hanging member is attached at the tip and is wound and unwound to raise and lower the load, and a rope-like member that guides the rope-like member The boom of a lifting device has a boom provided at its tip with a lifting fulcrum for changing the pulling direction of the cable member, and the boom of the lifting device is pivotally mounted, and the lifting fulcrum is connected to the bent swinging arm member. By arranging the bending part so that it can be moved forward, when lifting a load,
The suspension state of the load can be stabilized, and the working capacity of the lifting device can be increased by expanding the movement adjustment range of the lifting fulcrum of the lifting device by adjusting the bending angle of the swinging arm member and the swinging angle of the boom. can be increased.

Here, the means predicted from the technical concept of the present invention are listed as follows: (a) In the above embodiment, the lifting device T is arranged in parallel on both sides of the swinging arm members 4, 4A.

(b) Use a chain or the like as the cable member 16.

(c) Pivot support points 12, 12A for booms 11, 11A
Main arm 4a, 4aA or sub arm 4b,
(d) The shovel must be of the four-wheel vehicle type.

and correct it.

[Brief explanation of drawings]

The drawings show each embodiment of the present invention, and FIG. 1 is a side view showing the shovel of the first embodiment, FIG. FIG. 3 is a side view showing the shovel of the second embodiment, and FIG. 4 is an explanatory diagram showing the linked operation of the swing arm member and the lifting device. 4, 4A... Swinging arm member, 4a, 4aA...
...Main arm, 4b, 4bA...Sub-arm, 11...
...boom, T...lifting device.

Claims (1)

[Claims] 1. A swinging arm member in which a main arm and a sub-arm are connected in a bendable and extensible manner and a bucket is attached to the tip thereof has a hanging member for suspending cargo, and this hanging member is attached to the tip. a rope-like member that is operated to be wound up and unwound to raise and lower a load;
The boom of a lifting device having a boom provided with a lifting fulcrum at the tip for guiding the rope member and changing the pulling direction of the rope member is pivotably mounted, and the lifting fulcrum is pivotably mounted. A shovel with a lifting device, characterized in that the bent portion of the swinging arm member is disposed so as to be displaceable in a forward direction.