US 11,913,775 B2
Intra-hoistway measurement system
Toshiaki Hatano, Tokyo (JP); Daisuke Matsuka, Tokyo (JP); Makoto Hattori, Tokyo (JP); Yuta Hamada, Tokyo (JP); Hirofumi Taguchi, Tokyo (JP); and Masato Itou, Tokyo (JP)
Assigned to HITACHI BUILDING SYSTEMS CO., LTD., Tokyo (JP)
Appl. No. 17/270,465
Filed by Hitachi Building Systems Co., Ltd., Tokyo (JP)
PCT Filed Oct. 7, 2019, PCT No. PCT/JP2019/039485
§ 371(c)(1), (2) Date Feb. 23, 2021,
PCT Pub. No. WO2020/075671, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 2018-190691 (JP), filed on Oct. 9, 2018.
Prior Publication US 2021/0325173 A1, Oct. 21, 2021
Int. Cl. G01B 11/24 (2006.01); B66B 5/00 (2006.01)
CPC G01B 11/24 (2013.01) [B66B 5/0087 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An intra-hoistway measurement system measuring dimensions within a hoistway for an elevator, comprising:
a reference laser device that is mounted to a structure on a ceiling or in an upper portion of the hoistway and emits a laser beam toward a lowermost part;
a mobile measuring device that has a plane measuring device to measure dimensions in a horizontal direction within the hoistway; and
a moving device that is mounted to the structure on the ceiling or in the upper portion of the hoistway and moves the mobile measuring device up and down,
wherein the mobile measuring device comprises:
a reference laser detection device that detects the laser beam emitted from the reference laser device; and
an attitude detection device that detects its own attitude, and
wherein the reference laser device comprises:
a reference laser holder that is suspended from the structure on the ceiling or in the upper portion of the hoistway by a rope;
a reference laser irradiator that is mounted to the reference laser holder; and
a weight that is suspended from the reference laser holder by a plurality of ropes, and has an opening formed in a central portion.