Patent ID: 11858789
Assignee: KABUSHIKI KAISHA AICHI CORPORATION
Field: Handling (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 1:
2. The vehicle with the aerial work platform according to claim 1,
wherein the plurality of mast members include a base-side intermediate mast member that is assembled in a telescopic form inside the top-side intermediate mast member so as to be able to relatively move in the up-down direction with respect to the top-side intermediate mast member,
the extending and contraction apparatus has
an actuator that moves the top-side intermediate mast member with respect to the base-side intermediate mast member in the up-down direction,
a rotatable sprocket that is provided at an upper portion of the top-side intermediate mast member, and
a chain that is put around the rotatable sprocket, is connected to an upper portion of the base-side intermediate mast member on one end side, and is connected to a lower portion of the top mast member on the other end side,
when the actuator of the extending and contracting apparatus is extended or contracted, by a function of the rotatable sprocket and the chain, the top mast member is moved with respect to the top-side intermediate mast member in the up-down direction, and at the same time the top-side intermediate mast member is moved with respect to the base-side intermediate mast member in the up-down direction, and

the load detection apparatus has
a bracket member that is connected to the other end side of the chain, is disposed at the lower portion of the top mast member, and is able to relatively move in the up-down direction with respect to the top mast member,
a spring member which is provided between the lower portion of the top mast member and the bracket member, for applying a bias force against a load acting on the bracket member from the top mast member and keeping an up-down relative position of the top mast member at a predetermined position with respect to the bracket member, and
a position detector that detects the up-down relative position of the top mast member with respect to the bracket member that changes in accordance with the load applied to the top mast member.