Auxiliary device and work machine system

An auxiliary device mounted on a work machine to suction air containing dust from around a tip tool of the work machine and discharge air from which the dust has been separated, the device comprising:

• a suction unit having a suction port which is disposed on a periphery of the tip tool;
• an intake passage portion connected to the suction unit and configured to be stretchable in a first direction;
• a cyclone unit connected to the intake passage portion to swirl air having flowed out from the intake passage portion and centrifuge the dust;
• and
• a filter unit connected to the cyclone unit, an inside of which is configured as a filter chamber for accommodating a filter, and which has an outlet for discharging air having passed through the filter,
• wherein the cyclone unit comprises:
• a cyclone cylinder unit formed in a cylindrical shape centered on a cyclone axis which extends along the first direction;
• a cyclone inlet portion that communicates between the intake passage portion and the cyclone cylinder unit and swirls the air along an inner circumferential surface of the cyclone cylinder unit;
• and
• a cyclone outlet portion that communicates between the cyclone cylinder unit and the filter unit,
• wherein the cyclone unit and the intake passage portion are disposed at positions where the cyclone unit and the intake passage portion overlap each other in the first direction, and
• the filter unit is disposed on one side of the cyclone unit in the first direction,
• the cyclone outlet portion is formed at an end portion of the cyclone cylinder unit on the one side in the first direction,
• wherein the cyclone cylinder unit includes:
• a first cylinder unit constituting a portion of the cyclone cylinder unit on the one side in the first direction and having a constant inner diameter;
• and
• a second cylinder unit constituting a portion of the cyclone cylinder unit on the other side in the first direction, an inner diameter of an end portion on the one side in the first direction being larger than an inner diameter of an end portion on the other side in the first direction,
• wherein a gap is formed between the first cylinder unit and the second cylinder unit, and the inner diameter of the end portion of the second cylinder unit on the one side in the first direction is set to be larger than the inner diameter of the first cylinder unit.

An auxiliary device mounted on a work machine to suction air containing dust from around a tip tool of the work machine and discharge air from which the dust has been separated, the device comprising:

• a suction unit having a suction port which is disposed on a periphery of the tip tool;
• an intake passage portion connected to the suction unit and configured to be stretchable in a first direction;
• a cyclone unit connected to the intake passage portion to swirl air having flowed out from the intake passage portion and centrifuge the dust;
• and
• a filter unit connected to the cyclone unit, an inside of which is configured as a filter chamber for accommodating a filter, and which has an outlet for discharging air having passed through the filter,
• wherein the cyclone unit comprises:
• a cyclone cylinder unit formed in a cylindrical shape centered on a cyclone axis which extends along the first direction;
• a cyclone inlet portion that communicates between the intake passage portion and the cyclone cylinder unit and swirls the air along an inner circumferential surface of the cyclone cylinder unit;
• and
• a cyclone outlet portion that communicates between the cyclone cylinder unit and the filter unit,
• wherein the cyclone unit and the intake passage portion are disposed at positions where the cyclone unit and the intake passage portion overlap each other in the first direction, and
• the filter unit is disposed on one side of the cyclone unit in the first direction,
• the cyclone outlet portion is formed at an end portion of the cyclone cylinder unit on the one side in the first direction,
• wherein the cyclone cylinder unit includes:
• a first outer cylinder formed in a bottomed cylindrical shape with an end portion on the one side in the first direction blocked, an inside of which is configured as a swirling chamber, and which has a cyclone inlet hole serving as the cyclone inlet portion and a cyclone outlet hole serving as the cyclone outlet portion;
• a second outer cylinder formed in a cylindrical shape, disposed coaxially with the first outer cylinder, and at least a portion of which is disposed to be shifted to the other side of the first outer cylinder in an axial direction with respect to the first outer cylinder to form the swirling chamber therein in cooperation with the first outer cylinder;
• and
• a dust collection chamber outer wall having a dust collection chamber therein that accommodates the first outer cylinder and the second outer cylinder and communicates with an end portion of the second outer cylinder on the other side in the first direction,
• wherein an opening is formed between the first outer cylinder and the second outer cylinder, and the swirling chamber and the dust collection chamber communicate with each other through the opening.