左侧杆402和右侧杆403上外侧的竖直方向均等间距间隔设置有横杆700,且间距设置为30-35cm(本实施例优选 30cm);横杆700的延伸方向为水平方向,且平行于背框520;横杆700的长度设置为15cm-20cm(本实施例优选为15cm),横杆700外套设有防滑橡胶套(未示出)。
通过上述技术方案,使得检修人员在链式升降装置300出故障时,可踩踏横杆700爬出箱体100,属于应急预案,上述横杆700的间距和长度的优选值均是为了检修人员更好的攀爬。
如附图2和附图5所示,左侧杆402和右侧杆403的互相相对的内侧均设置有限位挡块550,且限位挡块550位于同一水平面。限位挡块550设置于升降台500的竖直方向的上方;且限位挡块550与升降台500在竖直方向存在重合区域;限位挡块550的竖直方向的高度低于驱动电机604和旋转齿轮 601的竖直方向的高度。
台湾玉盟齿轮泵1PM5P05R
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1PM5P04L
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1PM1P01L
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1DG1BP0604R
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1DK1BP0601R
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1DG1BU0605R
1DG1BF0601R
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通过设置限位挡块550,以限定升降台500可上升的最高高度,防止升降台500对驱动组件600产生冲撞。
同时,牵引链条602的长度设置为当所述升降台500上升至最高点时所述配重块603仍不与地面接触;防止配重块603触地而干扰升降台500的重力平衡。