公开(公告)号：US20040144850A1

公开(公告)日：2004-07-29

申请号：US10354248

申请日：2003-01-29

申请人： Deere & Company, a Delaware Corporation

发明人： Adam Joe Shuttleworth ,  Bruce Kevin Fryk

IPC分类号： F24D001/00

CPC分类号： B60H1/245 ,  B60H1/00378

摘要： A two piece molded roof structure is provided for enclosing the cab of a work vehicle. The roof structure has an upper roof member mounted to a lower roof member. The lower roof member has a plurality of contours and apertures for receiving the components of an HVAC system, and for defining air passages. When the upper and lower roof members are joined discrete air passages are formed between the roof members. The roof structure includes fresh and recirculated air intakes communicating via an uncirculated air duct and with an HVAC core chamber housing an HVAC core. Filters are mounted in the air intakes. One or more blowers communicate between the core chamber and a conditioned air duct which has vents communicating with the cab interior. Air is thus drawn in through the intakes and directed through the unconditioned air duct to the HVAC core and then the blower expels the air into the conditioned air duct and into the vehicle cab.

摘要翻译： 提供两件式模制屋顶结构用于封闭作业车辆的驾驶室。 屋顶结构具有安装到下部屋顶构件的上部屋顶构件。 下部屋顶构件具有用于接收HVAC系统的部件并且用于限定空气通道的多个轮廓和孔。 当顶部和下部顶部构件接合时，分离的空气通道形成在屋顶构件之间。 屋顶结构包括新鲜和再循环的进气口，其通过未循环的空气管道和容纳HVAC核心的HVAC核心室连通。 过滤器安装在进气口。 一个或多个鼓风机在核心室和具有与驾驶室内部连通的通风口的调节空气管道之间连通。 因此，空气通过进气口被吸入并且通过未调节的空气管道被引导到HVAC核心，然后鼓风机将空气排出到调节空气管道中并进入车厢。

公开(公告)号：US20040094852A1

公开(公告)日：2004-05-20

申请号：US10302598

申请日：2002-11-20

申请人： Deere & Company, a Delaware corporation

发明人： Adam Joe Shuttleworth ,  Dean Arden Boyce

IPC分类号： B29C041/04

CPC分类号： B29C37/005 ,  B29C33/3835 ,  B29C33/3842 ,  B29C41/04 ,  B29C41/48 ,  B29C71/02 ,  B29C2071/022 ,  B29K2995/004

摘要： A method is provided for producing dimensionally stable rotationally molded parts from semi-crystalline materials. A test mold is constructed having dimensions closely approximating the desired dimensions of the final part. A test part is then molded in the test mold using conventional rotational molding techniques. After the test part has partially cooled, it is removed from the mold, allowed to cool to ambient temperature, measured and annealed in an oven. During annealing, the part is heated to the crystallization temperature, midway between the glass transition temperature and the crystalline melting temperature. After annealing, the part is allowed to cool to ambient temperature and measured again. The post annealing dimensions are then compared with the dimensions determined before annealing to determine the amount of shrinkage. A production mold is then constructed to take into account the amount of shrinkage calculated. Production parts may then be molded in the production mold and annealed at the crystallization temperature to attain parts having a small dimensional tolerance and high tensile strength.

摘要翻译： 提供了一种用于从半结晶材料制造尺寸稳定的旋转成型部件的方法。 构造测试模具的尺寸接近于最终部件的期望尺寸。 然后使用常规的旋转成型技术在测试模具中模制测试部件。 在测试部分部分冷却后，将其从模具中取出，使其冷却至环境温度，在烘箱中测量并退火。 在退火过程中，将部件加热至结晶温度，在玻璃化转变温度和结晶熔融温度之间的中间。 退火后，将该部件冷却至环境温度并再次测量。 然后将退火后的尺寸与退火前确定的尺寸进行比较以确定收缩量。 然后构建生产模具以考虑计算的收缩量。 然后可以将生产部件在生产模具中模塑并在结晶温度下退火以获得具有小尺寸公差和高拉伸强度的部件。