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首页> 外文会议>ASME International Mechanical Engineering Congress and Exposition >Stand-Up Forklift Egress Times as a Function of Operator Compartment Guarding
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Stand-Up Forklift Egress Times as a Function of Operator Compartment Guarding

机译：备用叉车作为操作员舱卫守卫的函数

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A significant hazard related to the use of stand-up lift trucks, or stand-up forklifts, is the hazard of a lower limb crush injury or foot crush due to the opening across the rear of the operator compartment. According to one lift truck manufacturer's statistics, there have been over 500 accidents that resulted in an injury to the lower limb of the operator in the last 30 years that involved their stand-up lift trucks. [1] Other manufacturers have had similar accidents. The injuries have occurred to the lower limb of the operator due to the close proximity of the operator's lower limbs to the exterior of the lift truck, and the confined areas that stand-up lift trucks operate in. The operator's lower limb can become pinned and crushed between the moving lift and another fixed object such as a rack system, a column or another lift truck. Objects, such as a fork tine, can also intrude into the operator compartment, injuring the operator's lower extremities. The ANSI/ITSDF B56.1, Safety Standard for Low Lift and High Lift Trucks, encourages stand-up lift trucks to be designed with an open compartment to permit easy ingress and egress. [2] According to the standard, the open design allows an operator a free and easy egress from the truck in the event of a tip-over or off-the-dock accident. However, the standard permits the use of additional guarding and enclosure of the operator compartment. Spring loaded doors (or spring assisted closing guards) have been designed, implemented and are available from many manufacturers, but no data has been published regarding the time to open and egress from the operator compartment. Latching doors have also been designed and manufactured, but are not currently available on the market except in the case of trucks equipped with freezer cabs, for operation in refrigerated environments. However, latched doors have been criticized for extending the egress time duration by approximately 1/2 second. This study shows that a spring loaded door can be implemented on a stand-up forklift while only increasing egress time by a negligible amount, 0.05 seconds over an open compartment configuration. Furthermore, this study shows that an optimized latching door, designed by Knott Laboratory engineers, can also be implemented for a stand-up forklift while only increasing egress time by 0.09 seconds. The latching door designed by Knott Laboratory decreases the change in egress time associated with a latched door by a factor of 5. Therefore, the addition of a spring loaded door, or a latching door will not significantly increase operator egress time and provide additional protection to the operator in the event of a collision while still maintaining quick egress.
机译：与使用竖立升降卡车或站立叉车的使用有关的重大危险是由于操作箱后部的开口导致的较低肢体压碎损伤或脚压的危害。根据一个升降卡车制造商的统计数据，已经有超过500种事故，导致操作员的下肢伤害涉及他们的站立升降卡车。 [1]其他制造商面临着类似的事故。由于操作者的下肢到升降机外部的近距离，并且夹紧升降卡车运行的狭窄区域，造成的损伤已经发生在操作员的下肢。操作者的下肢可以固定在移动升降机和另一个固定物体之间被压碎，例如机架系统，一列或另一个升降机。诸如叉尖的物体也可以侵入操作员舱，损伤操作员的下肢。低电梯和高升降卡车的ANSI / ITSDF B56.1，安全标准鼓励站立升降卡车设有开放式隔间，以便轻松进入和出口。 [2]根据该标准，开放式设计允许操作员在码头或脱机事故发生的情况下从卡车自由而容易出口。然而，标准允许使用操作箱的额外保护和外壳。弹簧装载的门（或弹簧辅助关闭后卫）已经设计，实现，并可从许多制造商提供，但没有关于从操作员舱开放和出口的时间发布的数据。锁定门也被设计和制造，但目前在市场上不可用，除了配备冰箱驾驶室的卡车，在冷藏环境中运行。然而，锁定门被批评大约将出口持续时间延长大约1/2秒。该研究表明，弹簧装载的门可以在竖立的叉车上实现，同时仅在开放隔间配置上以忽略量的时间，0.05秒提高出口时间。此外，该研究表明，由knott实验室工程师设计的优化锁定门也可以用于站立叉车，同时仅将出口时间增加0.09秒。由knott实验室设计的锁定门会减小与闩锁门相关的出口时间的变化。因此，添加弹簧加载的门或锁定门不会显着增加操作员出口时间并提供额外的保护运营商在碰撞时仍然保持快速出口。

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