Working equipment and transparent machinery

Abstract

To provide a technique capable of appropriately disposing an offset cylinder provided in a work device for a construction machine.SOLUTION: An exemplary work device for a construction machine comprises: a first boom attached to a main body of the construction machine so as to be swingable in forward and backward directions; a second boom attached to the first boom so as to be swingable in right and left directions; a third boom attached to the second boom so as to be swingable in right and left directions; an offset cylinder having a cylinder portion attached to the second boom and a rod portion attached to the third boom; and a link rod having one end attached to the first boom and the other end attached to the third boom. In a side view of the second boom extending in forward and backward directions, a lower end of the offset cylinder is disposed above a lower end of the second boom, and a gap is provided between the link rod and the second boom.SELECTED DRAWING: Figure 4

Claims

1. A working device for construction machinery, A first boom is attached to the body of the construction machine so as to be able to swing in the front-rear direction, A second boom is attached to the first boom so as to be able to swing in the left-right direction, A third boom is attached to the second boom so as to be able to swing in the left-right direction, An offset cylinder in which the cylinder portion is attached to the second boom and the rod portion is attached to the third boom, A link rod having one end attached to the first boom and the other end attached to the third boom, Equipped with, In a side view of the second boom extending in the front-rear direction, The lower end of the offset cylinder is positioned above the lower end of the second boom. A gap is provided between the link rod and the second boom. The gap extends in the front-rear direction with respect to the central part of the second boom in the front-rear direction. Work equipment.

2. The offset cylinder is positioned to the side of the second boom, The work device according to claim 1, wherein, in the side view, the link rod is positioned either above or below the offset cylinder.

3. The working apparatus according to claim 1, wherein the gap is formed using a recess that makes the central part of the second boom in the longitudinal direction more recessed than both ends.

4. In the side view, the link rod is positioned above the offset cylinder, and the gap is provided between the link rod and the upper end of the second boom, as described in claim 1.

5. The working device according to claim 1, wherein the third boom has a first support portion that supports the offset cylinder and the link rod.

6. A work device for construction machinery, A first boom is attached to the body of the construction machine so as to be able to swing in the front-rear direction, A second boom is attached to the first boom so as to be able to swing in the left-right direction, A third boom is attached to the second boom so as to be able to swing in the left-right direction, An offset cylinder in which the cylinder portion is attached to the second boom and the rod portion is attached to the third boom, A link rod having one end attached to the first boom and the other end attached to the third boom, Equipped with, In a side view of the second boom extending in the front-rear direction, The lower end of the offset cylinder is positioned above the lower end of the second boom. A gap is provided between the link rod and the second boom. The gap is formed using a recess that makes the central part of the second boom in the longitudinal direction more recessed than both ends. The first boom has a second support portion that supports the link rod, The second support portion is provided so as to be able to enter the recess when the second boom, which extends in the front-rear direction, swings in the left-right direction due to the operation of the offset cylinder, in a working device.

7. The working apparatus according to claim 1, wherein the second boom has an opening on its side.

8. The work apparatus according to claim 7, wherein, in the side view, the opening is provided in a position that overlaps with the offset cylinder.

9. A work device for construction machinery, A first boom is attached to the body of the construction machine so as to be able to swing in the front-rear direction, A second boom is attached to the first boom so as to be able to swing in the left-right direction, A third boom is attached to the second boom so as to be able to swing in the left-right direction, An offset cylinder in which the cylinder portion is attached to the second boom and the rod portion is attached to the third boom, A link rod having one end attached to the first boom and the other end attached to the third boom, Equipped with, In a side view of the second boom extending in the front-rear direction, The lower end of the offset cylinder is positioned above the lower end of the second boom. A gap is provided between the link rod and the second boom. The second boom has an opening on its side, A work device in which, when the second boom extending in the front-rear direction swings in the left-right direction due to the operation of the offset cylinder, a part of the offset cylinder is provided to be able to enter the opening.

10. The work apparatus is provided according to any one of claims 1 to 9, The aforementioned work apparatus is An arm attached to the third boom so as to be rotatable in a vertical plane parallel to the front-rear and up-down directions, A work tool attached to the arm so as to be rotatable within the vertical plane, A construction machine equipped with the following features.

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