概述
HITS 水平冲击测试系统
Horizontal Impact Test System
Horizontal Impact Test Systems (HITS) simulate horizontal acceleration effects of vehicle braking and accelerating, rail switching, truck docking, and other types of horizontal impacts that occur during distribution and handling. Standard HITS models are specifically designed to test in accordance with ASTM D4169 Schedule G, ASTM D4003 and other corporate, industry and government specifications.
Custom HITS models are available that can perform tests in accordance with the Federal Motor Carrier Safety Administration’s (FMCSA) published Cargo Securement Rules, replicating the dynamics that a transported load experiences when vehicles are accelerating, braking, and turning.
High performance HITS are capable of replicating much higher energy events such as the horizontal impacts associated with crash or explosive events.
水平冲击测试系统（HITS）能模拟车辆在制动、加速、轨道切换、卡车停靠以及其它在运输和处理过程中发生的类似水平撞击事件。符合ASTM D4169 ScheduleG、ASTM D4003标准和其他公司、行业和政府试验测试规范。
定制版可以根据联邦汽车安全管理局（FMCSA）发布的货物安全规范进行测试，模拟当车辆加速、刹车和转弯时运输负荷的冲击动力。
高性能版能模拟更高的能量冲击事件，例如与车辆撞击碰撞或爆炸事件相关的水平撞击。
参考标准
ASTM D4003 - 98(2015) Standard Test Methods for Programmable Horizontal Impact Test for Shipping Containers and Systems
ASTM D4169 - 16 Standard Practice for Performance Testing of Shipping Containers and Systems
GB∕T 4857.15-2017 包装 运输包装件基本试验 第15部分：可控水平冲击试验
GB∕T 4857.17-1992 运输包装件 编制性能试验大纲的一般原理
GB∕T 4857.18-1992 运输包装件 编制性能试验大纲的定量数据
产品特点 Features Highlights:
HITS Programmer 冲击波形发生器
The HITS programmer design simulates a variety of cushioned draft gear railcar impacts or other low amplitude, long duration events. It consists of a pneumatic cylinder mounted to the seismic mass, a plunger with elastomer modules mounted to the carriage’s vertical bulkhead, and a pressure controller. The plunger and elastomers control the rise and decay of the trapezoidal pulse, and the cylinder controls the acceleration level, according to its internal pressure.
HITS冲击波形发生器模拟产生各种缓冲齿轮轨道车撞击或其他低振幅、长时间事件。它由一个安装在消震质量上的气动气缸组成，一个装有弹性体模块的柱塞，安装在车厢的垂直舱壁上，还有一个压力控制器。柱塞和弹性体控制梯形脉冲的上升和衰减，柱体根据其内部压力控制加速度水平。
HITS Reaction Mass 冲击消振质量块
The seismic reaction mass is a massive, solid steel structure which rides on rails and bearing which are independent from the carriage. It is restrained by a snubbing cylinder specially designed for the purpose. The seismic mass serves to isolate the high shock forces from the floor so that no large concrete foundation or buttress backstop is required.
消震反应质量块是一个巨大的、坚固的钢结构，它用轴承安装在轨道上,独立于装载车厢。它用一个专门专门设计的圆筒固定。消震质量块可以衰减高冲击能量传递到地面来，这样就不需要大的混凝土基础或支撑结构。
HITS Propulsion System HITS推进系统
The carriage is accelerated by a long stroke pneumatic cylinder, the rod of which is permanently attached underneath the carriage. Before a test, the air supply is isolated from this cylinder and both ends are vented to atmosphere, making the carriage completely passive and safe to be approached for specimen loading and/or inspection. The brakes are also applied under these conditions, for additional safety. Just before a test, a large valve is operated to connect the aft end of the cylinder to a pre-charged air reservoir. When the brakes are released to initiate a test, air flows into the cylinder, the rod extends, and the carriage is accelerated to the desired velocity.
车厢由一个长冲程的气动气缸加速，气缸推动杆与车厢下方连接。在测试前，压缩空气供应系统与汽缸是分离的，气缸内部气体也排放到大气中，使车厢完全安全，以便进行产品装载和检查。装载时刹车系统，也启动保证装载无风险。在测试之前，一个大阀门将推进系统尾部进气口连接到一个预先充气的储气罐。当刹车被释放启动一个测试时，空气会流入汽缸，气缸推动杆延伸，推动车厢加速到想要的速度。
HITS Carriage 装载车厢
The carriage is a rigid weldment with a solid horizontal surface and an integral vertical impact surface (“bulkhead”) at the forward end. The vertical structure simulates the end of a railcar or trailer, and is designed to resist the horizontal impact loads of packages and products. Each of the surfaces (horizontal and vertical) are fitted with threaded inserts for the mounting and securing of test specimens.
车厢刚性焊接，包括一个实心的水平台面和一个前端整体式垂直冲击面（“舱壁”）组成。垂直冲击面结构模拟了轨道车或拖车的末端，用来抵抗包裹和产品的水平冲击。每个面（水平和垂直）都预留了螺纹孔，方便测试标本安装和保护。
HITS Guide Rails 导轨
Two precision guide rails secured to C-beams provide the horizontal support and guidance for the HITS carriage. Zero clearance recirculating ball bearings on the carriage allow the carriage to travel smoothly along the guide rails. The bearings are mounted underneath the carriage, resulting in a system with zero clearance specimen surface side access; the widest part of the system is the side of the carriage itself.
固定在C梁上的两个精密导轨，为碰撞车厢提供水平的支撑和导向。在车厢上的零间隙循环球轴承使车厢在导轨上平稳地行驶。轴承安装在车厢的下方，不影响试验产品安装,车厢即为系统中最宽的部分.
Lansmont,美国蓝氏,水平冲击台,水平冲击系统,HITS,高速度,半正弦,梯形波,锯齿波,进口,ASTM
