The utility model discloses a halberd fork type single rope two petal grab with a polyurethane limit buffer device, which is symmetrical on the polyurethane limit buffer device on the grab upper bearing beam. The lower part of the polyurethane limit buffer device is supported by the chain and grab through the Liang Xianglian, and the polyurethane limit buffer device includes a U shaped fixed seat and a U shaped fixed seat center. An inverted T shaped hoist is inserted. The upper end of the hanging ear is equipped with a nut, the lower end of the ear is provided with a hanging ear shaft baffle, the lower end is equipped with two symmetrical baffles, the two baffles are inserted with the hanging ear shaft, and the end of the hanging ear shaft is fixed with the hanging ear shaft baffle and the hanging ear pin. The limit buffer device operates well in the production operation, and it can recover quickly after compression, effectively buffering the force when the grab is opened. Compared with the spiral spring, it has the obvious advantage of repeated stroke after compression. The stability of the polyurethane cushion is good and the bottom is connected with the 10 ton load chain of the T8 grade, which satisfies the safety factor of 4 times more than one time. .
【技术实现步骤摘要】
一种带聚氨酯限位缓冲装置的戟叉式单绳两瓣抓斗
本技术涉及机械领域,具体为一种带聚氨酯限位缓冲装置的戟叉式单绳两瓣抓斗。
技术介绍
两瓣抓斗是起重机装卸散料的一种常用取物装载,目前小型门机起重机及轮胎起重机较多,且多为单卷筒起重机,因此,长撑杆单绳抓斗在港区内应用装卸散杂货较为普遍。现有单绳抓斗的抓取和开卸动作由司机在司机室内操作,均为自动开闭,不需要辅助人员协助。现有的单绳两瓣抓斗的自动开闭方式为挂球式开闭,但挂球式开闭抓斗受载荷及结构限制,为满足起重载荷要求,起升张开与闭合全部采用单根8吨T8级钢链条,不但增加了抓斗的自重,货物的抓取量受到影响,而且在实际运行中钢链与滑轮组相互硬性接触,钢链与滑轮表面的磨损量都非常大,钢链条与滑轮组的使用寿命都大大降低,另外该起重方式采用单根钢链条,整个抓斗连同物料全部的重量都承载该单根链条,增加了安全风险隐患。实际操作中,抓斗张开过程中,下承梁及物料在重力的作用下,下落时瞬间的冲力很大,连接钢链条的卸扣在使用中变形甚至脱扣的情况时有发生,该抓斗并未设置限位缓冲装置,长期存在安全问题。实现挂球式抓斗开闭操作,依靠起重机钩头侧向起 ...
【技术保护点】
1.一种带聚氨酯限位缓冲装置的戟叉式单绳两瓣抓斗,其特征在于,包括对称设于抓斗上承梁上的聚氨酯限位缓冲装置,所述聚氨酯限位缓冲装置下部通过链条与抓斗下承梁相连,所述聚氨酯限位缓冲装置包括U形固定座,所述U形固定座中央处插嵌有倒T形吊耳,所述吊耳上端设有螺母,所述吊耳下端设有吊耳轴挡板,所述下端设有两条对称的挡板,所述两挡板间插嵌有吊耳轴,所述吊耳轴一端固定有吊耳轴挡板及吊耳销。
【技术特征摘要】
1.一种带聚氨酯限位缓冲装置的戟叉式单绳两瓣抓斗,其特征在于,包括对称设于抓斗上承梁上的聚氨酯限位缓冲装置,所述聚氨酯限位缓冲装置下部通过链条与抓斗下承梁相连,所述聚氨酯限位缓冲装置包括U形固定座,所述U形固定座中央处插嵌有倒T形吊耳,所述吊耳上端设有螺母,所述吊耳下端设有吊耳轴挡板,所述下端设有两条对称的挡板,所述两挡板间插嵌有吊耳轴,所述吊耳轴一端固定有吊耳轴...
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