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《国际科技文献速递:通用机械》     2023年  第 08 期


              阀门       压缩机       真空、干燥、冷却、空分机械       减变速机


本期共收录论文131篇,以下为部分内容,如需查看全部内容请进行注册,并联系010-88379895成为高级会员。


【标题】FEATURES A DOUBLE PUMP DESIGN

【参考中译】特点:双泵设计

【类型】 期刊

【作者】 Brendan Baker

【摘要】 The Ascot Supply 4-Ton Floor Jack features a double pump design for quick lifting and improved efficiency. Its heavy steel construction ensures maximum durability and longevity. It also has a foot pedal for handsfree positioning. With a lift range between 4-3/8" and 20-1/4", it's ideal for many vehicle types. Includes a one-year limited warranty.

【参考中译】 ASCOT Supply 4吨地板千斤顶采用双泵设计,提升速度快,效率高。其厚重的钢结构确保了最大的耐用性和寿命。它还有一个脚踏板,可以免提定位。它的升降范围从4-3/8“到20-1/4”,是许多车型的理想选择。包括一年的有限保修。

【来源】 Professional Tool and Equipment News: PTEN 2023, vol.34, no.2 Suppl.

【入库时间】 2023/8/29

 

阀门


【标题】REMOVES EGR VALVE ON SELECT MAXXFORCE, N9 AND N10 ENGINES

【参考中译】拆除部分MaxxForce、N9和N10发动机上的EGR阀

【类型】 期刊

【作者】 Brendan Baker

【摘要】 The OTC EGR Valve Puller, No. 5865, is designed to remove the EGR valve on 2010 MaxxForce, N9, N10, and DT engines as well as 2013 N9 and N10 with SCR. The tool is similar to Navistar OE tool No. ZTSE4941. Made in U.S.A. with global materials.

【参考中译】 OTC EGR阀门拉拔器,编号5865,旨在拆卸2010年MaxxForce、N9、N10和DT发动机以及带有SCR的2013年N9和N10发动机上的EGR阀门。该工具类似于Navistar OE工具号。ZTSE4941。美国制造,采用全球材料。

【来源】 Professional Tool and Equipment News: PTEN 2023, vol.34, no.2

【入库时间】 2023/8/29

 

压缩机


【标题】NEW PRODUCT: Clarke tool storage and compressors

【参考中译】新产品:克拉克工具存储和压缩机

【类型】 期刊

【作者】 Steve Fowler

【摘要】 IF your tools have outgrown your collection of bags and boxes, Clarke has revamped its range of chests and cabinets to help you get them organised. The line-up includes a likely replacement for our current test winner, the CBB209B HD, which is on an end-of-line sale for a few pounds less than when we tested it in 2019. While there's no direct nine-drawer replacement, Clarke has added the CBB312C. It boasts 12 drawers - nine small ones that are ideal for keeping tools separate, plus three full-width trays, with two 49mm deep and one 64mm. All have a 35kg capacity. The unit costs £298.80. For those with a smaller budget, there is the £191.98 CBB205C, which is a five-drawer design. These are full width, with one 64mm deep and the rest 49mm.

【参考中译】 如果你的工具已经超出了你的袋子和盒子的收藏范围,Clarke已经改进了它的柜子和橱柜系列,帮助你把它们整理好。这一阵容包括可能取代我们目前测试获胜者CBB209B HD的产品,后者正在进行下线销售,价格比我们在2019年测试时低了几英镑。虽然没有直接的九抽屉替代,克拉克增加了CBB312C。它有12个抽屉--9个小抽屉非常适合将工具分开,外加三个全宽托盘,两个49毫米深,一个64毫米深。所有托盘的容量都是35公斤。这款设备售价298.80 GB。对于预算较小的人,有GB 191.98 CBB205C,这是一个五抽屉设计。这些都是全宽的,一个64毫米深,其余49毫米深。

【来源】 Auto Express 2023

【入库时间】 2023/8/29

 

真空、干燥、冷却、空分机械


【标题】Optimization of cyclical supercooling in the multi-stage system of a thermoelectric cooler

【参考中译】热电制冷器多级系统循环过冷度的优化

【类型】 期刊

【关键词】 Thermoelectric cooler; Supercooling; Pulsatory operation; Electric current shaping

【参考中译】 热电制冷器;过冷;脉动运行;电流整形

【作者】 Ryszard Buchalik; Grzegorz Nowak

【摘要】 The paper deals with issues related to the optimization of pulse supply of thermoelectric cooling systems to obtain possibly low temperatures, below the minimum steady-state temperature. The pulse shape was optimized with a view to minimizing the period between its successive repetitions to achieve the set cyclic effect of supercooling. An analysis was conducted of the way of the current pulse modelling using three different methods. It was observed that its definition using 3 degrees of freedom was a good compromise between the achieved results and the computational cost. The calculations were carried out for a one- and a two-stage system taking account of the thermal capacity of the heat reservoirs. An analysis was also carried out of the impact of the thermal capacity of individual reservoirs on the optimization results. The notions of the limit temperature and of the limit period defining the rationality threshold of further reduction of the supercooling temperature were introduced. The optimization process was run for two variants of computations, i.e. firstly to minimize the period between subsequent supercooling temperature occurrence, and secondly to maximize the supplied cooling power at supercooling temperature range. It was demonstrated that in the case of the assumed two-stage system, it was possible to maximally reduce the cold reservoir temperature by over 6 K at the working cycle of about 13 min. Diagrams of supercooling temperature as a function of the minimum period were presented. Smaller supercooling values but with shorter periods are obtained for one-stage systems. Pulse supply also produces the benefit of obtaining cooling power at temperatures below the steady-state minimum and close to it.

【参考中译】 本文讨论了热电制冷系统的脉冲电源的优化问题,以获得尽可能低的温度,低于最低稳态温度。为了达到设定的过冷循环效果,对脉冲形状进行了优化,使其连续重复的周期最小。用三种不同的方法对电流脉冲建模方法进行了分析。据观察,使用3个自由度的定义是在取得的结果和计算成本之间的一个很好的折衷。计算是针对一个单级系统和一个两级系统进行的,其中考虑了热源的热容量。分析了各水库的热容量对优化结果的影响。引入了极限温度和极限周期的概念,定义了进一步降低过冷度的合理阈值。优化过程用于两种不同的计算,即第一种是最小化后续过冷温度发生之间的时间间隔,第二种是在过冷温度范围内最大化所提供的冷却功率。结果表明,在假定的两级系统的情况下,在13min左右的工作循环下,冷库温度最大可能降低6K以上。给出了过冷温度与最小周期的关系图。对于单级系统,得到了较小的过冷值,但周期较短。脉冲电源还可以在低于或接近稳态最低温度的情况下获得冷却功率。

【来源】 Applied Thermal Engineering 2023, vol.228

【入库时间】 2023/8/29

 

减变速机


【标题】Electron gives Apex gearboxes a 'thumbs up'

【参考中译】电子公司对Apex变速箱竖起了大拇指

【类型】 期刊

【作者】 Colin Granger

【摘要】 Electron Engineering Services (www.electron -services.co.uk) specialises in machine tool refurbishment and CNC retrofitting-including re-engineering, remanufacture and retrofit. The company, which was founded in 1985 and has customers throughout the UK, Europe, and the USA, has worked with many of the top industry names. When Electron was recently retrofitting a grinding machine and converting it from hydraulic drives to electric servo systems, the company turned to Apex Dynamics Ltd, Uttoxeter (www.apex dynauk.com) and selected the company's AB115 and the PAII115 gearboxes for the job.

【参考中译】 电子工程服务公司(www.Electronics-Services.co.uk)专门从事机床翻新和数控改装,包括重新设计、再制造和改装。该公司成立于1985年,客户遍及英国、欧洲和美国,曾与许多顶级行业品牌合作。当电子公司最近对一台磨床进行改造,并将其从液压驱动系统转换为电动伺服系统时,该公司求助于Apex Dynamic Ltd,Uttoxeter(www.tex dynauk.com),并选择了该公司的“”S AB115和PAII115变速箱进行这项工作。

【来源】 Machinery Market 2023

【入库时间】 2023/8/29

 




来源期刊
Applied Thermal Engineering《实用热力工程》
Auto Express《汽车快讯》
Machinery Market《机械市场》
Professional Tool and Equipment News《专用工具与设备新闻》