Title:
移動式クレーンのブーム旋回角度検出装置
Document Type and Number:
Japanese Patent JP6846541
Kind Code:
B2
Abstract:
In this boom slewing angle detection device (30), a slewing angle detecting gear (31) is attached to an end of a shaft of a pinion gear (21) that meshes with a ring gear (22) formed on a slewing bearing (3) rotatably supporting a crane boom (6), and the amount of rotation of the slewing angle detecting gear (31) is detected by a slewing-angle-detecting proximity sensor (32). The slewing angle detecting gear (31) is not meshed with the ring gear (22) or the pinion gear (21), which compose a slewing force transmission mechanism; thus, grease, and the like, do not adhere to the slewing angle detecting gear (31), and external teeth (31a) for detection of the slewing angle detecting gear (31) are not subject to wear, so accurate slewing angle detection is possible.
Inventors:
Shinya Tokudome
Mitsuaki Wada
Takahisa Karasawa
Mitsuaki Wada
Takahisa Karasawa
Application Number:
JP2019558816A
Publication Date:
March 24, 2021
Filing Date:
December 14, 2017
Export Citation:
Assignee:
Maeda Manufacturing Co., Ltd.
International Classes:
G01B21/22; B66C23/94
Domestic Patent References:
| JP2007176650A | ||||
| JP2002235499A | ||||
| JP5675384A | ||||
| JP674751A | ||||
| JP9142789A |
Foreign References:
| CN102793992A |
Attorney, Agent or Firm:
Shiro Yokozawa