To provide a boom sliding mechanism having a simplified structure which does not bolting of a slide pad.SOLUTION: A boom sliding mechanism 10 comprises: a slide pad 18 which is configured an elastically deformable plate-like member which is mounted to an outside surface 5 of a boom 3 and is brought into slide contact with an inside surface 4 of the boom 2; and a fitting member 11 which is located on the outside surface 5 of the boom 3 and defines a fitting position of the slide pad 18. The fitting member 11 has presser parts 11a which face one another at predetermined intervals, and each presser part 11a has a fastening surface side as a lower side, and comprises a reception part 11s having a first inclined plane which is continuously inclined from a side, which faces from an upper end side toward a lower end side, toward a surface on an opposite side thereof. Both ends of the slide pad 18 are so configured as to have a shape which can be fitted in a recess which is configured the reception part 11s and the fastening surface. The presser part 11a is so configured that an inter-upper end distance of the reception part 11s is shorter than an entire length of the slide pad 18 and is a linear distance or more between both ends of the slide pad 18 when bending.SELECTED DRAWING: Figure 2
【課題】摺動パッドのボルト止めが不要な、簡素化された構造を有するブーム摺動機構の提供。【解決手段】ブーム摺動機構10は、ブーム3の外側面5に装着されるとともにブーム2の内側面4に摺接する弾性変形可能な板状部材から構成された摺動パッド18と、ブーム3の外側面5に配置されて摺動パッド18の装着位置を定める装着部材11とを備え、装着部材11は所定間隔を空けて対向する押さえ部11aを有し、各押さえ部11aは固着面側を下方として上端側から下端側に向かって対向する側からその反対側の面に向かって連続して傾斜する第1の傾斜面を有する受け入れ部11sを備え、摺動パッド18の両端部は受け入れ部11sと前記固着面とで構成される凹部に嵌入可能な形状に構成され、押さえ部11aは、受け入れ部11sの上端間距離が、摺動パッド18の全長よりも短く且つ屈曲時の摺動パッド18の両端間の直線距離以上となるように構成されている。【選択図】 図2
BOOM SLIDING MECHANISM
ブーム摺動機構
2019-06-20
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |