用于自动化生产线的子母运输车设计

智能化的运输是智能制造中的一个重要环节,不同的生产线设计对智能运输提出了不同的要求。为解决解决狭长AGV小车直角转弯及运转速度不足的问题,设计了一种智能化生产线用的自动控制子母传送车。该自动控制子母传送车为一组子车和母车的组合,是可以包含多个子车和多个母车组成的系统。子车在生产线的支线上运行,沿Y方向移动,母车在生产线主线上运行,沿X方向移动。由于子车和母车没有电缆连接,母车、子车可以分别在主线和支线上灵活调动,自由组合,具有自动化、智能化的云概念特点。     

客车行李舱门无线控制技术

根据市场需求，研发一种基于无线收发式的客车行李舱门，设计了客车行李舱门的机械结构，论述了客车行李舱门直流推杆电机的控制方法，阐明了客车行李舱门无线收发装置的工作原理，在此基础上完成了客车行李舱门的研发工作，开发出一种新型客车行李舱门。     

基于K60智能循迹小车的设计

随着当今世界的发展,智能化已成为主流趋势。智能设备能够在非人为干扰因素下完成预设好的任务。智能小车就是其中一个主要的体现。它可以在特定的环境下,通过识别标志物以及预先设定好的流程来完成目标任务。也可以协助工作人员来更加高效的完成任务。而且我们可以通过用计算机来使它更加精确的完成任务。     

基于Arduino平台智能壁障小车的开发

Arduino开发板的发展方兴未艾。它在工程实践中应用中扮演了重要角色,在大学生课业活动中迅速普及,通常可以用Arduino验证无人飞行器模块、智能小车模块、芯片功能等等。替换原来需要有人作业的繁复工作。本文阐明了智能壁障小车开发流程和难点。     

单列角接触轴承车加工沟位置测量的改进

针对单列角接触球轴承磨加工外沟工序沟边露黑皮的现象,分析产生的原因,改进原车加工外沟工序沟位置测量方法,从而保证了产品质量.     

基于nRF2401的轿运车远程油门控制系统

文章介绍了一种基于nRF2401的轿运车远程油门控制系统,其分为遥控端和车载端。遥控端通过nRF2401无线射频芯片将的油门开度信号传输给车载端的nRF2401无线射频芯片中,再通过SPI接口将数据传输到单片机中。单片机接收信号后,通过I2C总线将数据传输到PCF8591芯片中,将数字信号转换为相应的模拟信号,最终实现对轿运车的油门开度控制。     

大连警犬成功搜出汽车炸弹

2005年6月22日上午时许,大连市公安局刑侦支队警犬管理大队接到报警,大连市西岗区某居民区内停放的一辆黑色捷达轿车内有炸弹,上级要求立即出动警犬进行现场搜爆。接到指示后,警犬大队长姜师民,中队长郭宝同带领民警阎吉光,     

Transport of pigs by car for two days; some aspects of watering and loading density

A long-distance international transport of live pigs was simulated by transporting 216 pigs (± 100 kg live weight) around through The Netherlands for two days; 100 control pigs were slaughtered at start. The experimental pigs were allocated to groups with and without access to water and three different loading densities (0.66, 0.44 and 0.33 m² per pig) during the transport. The watered pigs used 5.4 ] per pig during the 44 h of transport, part of which was wasted by leaning on the bite waternipples. Hence, water consumption was very low. In the high density compartments not all pigs could lie down at the same time, involving continuous alternation of lying down and standing up. During the two days the weather was warm (on average 22°C).After transport pigs had lost 8 kg live weight, half of which was lost carcass weight. The latter was mainly due to water loss, as illustrated by the increased fat/water ratio in the backfat (5.3 versus 4.1 in controls). It should be noted that the weight loss was a little higher in the watered groups than in the non-watered ones.Physiological parameters determined after slaughter in blood and urine did not indicate physiological imbalance due to non-watering or high loading density. These factors had no significant effect on meat quality parameters, except for higher pH₁ and pH₂ values in the high loading density group, indicating that these animals had got more fatigued. The experiment has shown that watering during transport by means of bite nipples is ineffective. It is suggested that loading densities should not exceed 235 kg body weight m^?2 (0.44 m² per pig of 100 kg) for reasons of animal welfare and meat quality.     

怪!英国: 养犬比买一辆豪华汽车还贵

英国人喜欢养犬,在英国的大街上,无论是老人还是年轻人,甚至未成年的孩童牵犬散步者比比皆是。每逢星期天,英国人还要举办五花八门的赛犬运动会。不过,在英国养犬的费用可着实不低。近日一家宠物保险代理公司的调查显示,在英国养一头犬并照顾其“终老”的平均花费竟然高达2万英镑,比买一辆豪华汽车还贵。养犬的费用要视犬的大小、犬种以及寿命长短而定。像名贵的纯种犬,如大丹犬,它的平均寿命是10年,养一头的费用就会高达3万多英镑,当然,一般的非纯种犬就会便宜得多。算起来养一头纯种犬的钱真是足够买辆豪华车了。在英国,一辆X型美洲虎或…     

Some effects on the growth and composition of the car cass of the bacon pig of feeding micronized or ground maize or barley based diets to give three different digestible energy intakes

In a 2 × 2 × 3 factorial experiment 144 Large White pigs were individually fed, between 25 and 90 kg live weight, maize (M) or barley (B) based diets in ground (g) or micronized (m) forms at three different levels of digestible energy (DE) intake. Relative to live weight all pigs received similar daily quantities of crude protein and total lysine. At the lowest energy intake (L) each gram of crude protein was fed with 74J of DE: at the two other intakes the DE was increased by 10.5% (E) and 21.0% (H). The daily intake of total lysine was 4.8% of the crude protein intake. In formulating the diets the difference in DE content between gM and gB was taken as 16.7% and the differences between mM and gM and mB and gB were taken as 6.4% and 4.3% respectively.There were no significant first- or second-order interactions for growth rates or carcass composition data. The B and g based diets induced growth rates which were significantly greater than the M and m based diets by 2.7% and 4.6% respectively. There were no significant differences between cereals or processing treatments in carcass composition. Increasing energy intake significantly increased growth rates and killing-out percentages but decreased eye muscle areas and lean percentages in the carcass.