Power transmission device
AssigneeSumitomo Heavy Industries, Ltd.
InventorKazuhisa Abe
Life of this patent
Estimating the term…
Abstract
A power transmission device in which a motor and a reduction gear are connected through a fluid coupling, includes: a fan for reduction gear cooling provided at an input shaft of the reduction gear; and a protective cover configured to cover the fluid coupling, wherein the protective cover is provided with an air intake for the fan, and a guide unit that guides air drawn in from the air intake to the fan.
Claims11
A power transmission device in which a motor and a reduction gear are connected through a fluid coupling, comprising:
- a fan for reduction gear cooling provided at an input shaft of the reduction gear;
- a fan hood configured to cover the fan;
- and
- a protective cover configured to cover the fluid coupling,
- wherein the protective cover includes a partition plate configured to partition a fan-side space which includes the fan from a coupling-side space which includes the fluid coupling, and a first air intake which opens to the fan-side space,
- wherein the partition plate is disposed at a position separated in an axial direction from the fan hood and includes a through-hole for the passage of an input shaft of the reduction gear or an output shaft of the fluid coupling,
- wherein the protective cover is provided with a second air intake and an air outlet which open to the coupling-side space, and
- wherein the protective cover is provided with a third air intake which opens to the coupling-side space at a position closer to the partition plate than the second air intake.
A power transmission device in which a motor and a reduction gear are connected through a fluid coupling, comprising:
- a protective cover configured to cover the fluid coupling,
- wherein an air intake is disposed at a position close to the reduction gear of the protective cover,
- an air outlet is disposed at a position away from the reduction gear of the protective cover,
- air drawn in from the air intake by rotation of the fluid coupling is discharged from the air outlet,
- the protective cover includes a reduction gear connection surface which faces the reduction gear and is perpendicular to an input shaft of the reduction gear,
- the reduction gear connection surface has an enlarged portion larger in a radial direction than an outer shape of a casing of the reduction gear,
- the air intake opens to the enlarged portion,
- the power transmission device further includes a bearing housing configured to accommodate a bearing which supports the input shaft, and
- a part of the bearing housing is disposed in the protective cover.
A power transmission device in which a motor and a reduction gear are connected through a fluid coupling, comprising:
- a protective cover configured to cover the fluid coupling,
- wherein an air intake is disposed at a position close to the reduction gear of the protective cover,
- an air outlet is disposed at a position away from the reduction gear of the protective cover,
- air drawn in from the air intake by rotation of the fluid coupling is discharged from the air outlet,
- the protective cover includes a reduction gear connection surface which faces the reduction gear and is perpendicular to an input shaft of the reduction gear,
- the reduction gear connection surface has an enlarged portion larger in a radial direction than an outer shape of a casing of the reduction gear,
- the air intake opens to the enlarged portion,
- the protective cover is formed into the shape of a rectangular parallelepiped-shaped box, and
- the fluid coupling is located closer to the motor than a center in the axial direction of the protective cover, and in the protective cover, a space closer to the reduction gear than the fluid coupling is wider than a space closer to the motor than the fluid coupling.
Dependencies are inferred from the claim text.