小拖拉機(jī)執(zhí)行大任務(wù)課程畢業(yè)設(shè)計(jì)外文文獻(xiàn)翻譯、中英文翻譯、外文翻譯

SMALL TRACTORS TARGET BIG PERFORMANCE After introducing both its large chassis 4000 and mid-chassis 3000 Twenty series tractors last year, John Deere recently focused on the compact end of the range, launching new models in its small-chassis 2000 Twenty series. Two tractors are new to the 2000 Twenty series, the 24 hp 2320 and 26.5 hp 2520, and a third, the 24 hp 2305, has been added to Deere s 2000 series compact utility line. “ More customers are in need of a machine that can perform large mowing jobs in addition to light-duty chores that can t be done with standard lawnmowers, such as loader and/or box blade word,”  said Sean Sundberg. Deere brand manager, compact utility tractors. “ John Deere responded with our new small-chassis tractors that help customers select the right tractor for the right job at the right price.”  With the Twenty series extending across 10 models ranging from 24 to 58 hp, the 2320 and 2520 are the smallest offerings in the lineup. The new 2320 replaces Deere s 4110model, which was part of its 4000 Ten series line and is still limitedly available. The 2320 tractor has “ big tractor”  features Deere said, offering more hp then its predecessor as well as ROPS, position control three-point hitch and cruise control as standard. A step up from the 2320 is the new 2520 Twenty series tractor which also includes a “ big tractor”  design with more horsepower, a direct injection engine, more hydraulic capacity and larger tires. The 2520 replaces Deere s 4115 compact utility tractor. Also new to the small chassis lineup is the 2305 tractor, which fills Deere s need for an entry-level tractor to allow new operators to easily and intuitively operate the tractor. Which fills Deere s need for an entry-level tractor to allow new operators to easily and intuitively operate the tractor. It targets large property homeowners and replaces Deere s 2210 model. “ The 2305 is a small but powerful tractor, which makes it ideal for lawn chores, pasture maintenance, work in tight spaces, and a variety of other property tasks,”  said Sundberg. “ Whether it is mowing, hauling, loading or tilling, the 2350 has the versatility and power to tackle most any job easily and efficiently and at a significantly lower price than what was previously available.”  Powering the three new tractors are Yanmar Tier 2TNV series diesel engines rated 24, 26.5 and 24 hp at 3000 rpm. A 1.115 L three-cylinder naturally aspirated Yanmar engine is installed in both the 2320 and 2305 machines while a larger 1.33 L three cylinder platform is installed on the 2520. According to Deere, the 2320 and 2520 tractors have 11% more hp then their predecessors, which were rated 20 and 24 hp. The Yanmar engines are configured with a Trad radiator and Blissfield oil cooler cooling package. The tractors  two-speed infinitely variable hydrostatic ground drive provides infinite speed selection without clutching or shifting, and a integrated differential lock is designed to integrated differential lock is designed to increase the tractors  traction and pulling power. The drive is powered by a Kanzaki variable displacement axial piston pump, which is transmission mounted and direct driven off the engine. This 14 cu.in. (11 cu.in. in the 2305) pump drives Kanzaki fixed displacement axial piston wheel motors in the same cu.in. displace ment. This “ U”  style configuration uses mechanical control and is configured with a Kanzaki axle package. Additional auxiliary hydraulic flow is powered on the smaller 2320 and 2305 tractors by a Kanzaki gear pump that is transmission mounted. This pump has a 6.1 cu.in. displacement in the 2320 tractor and 5.5 cu.in. displacement on the 2305 machine and are used to supply the steering, remote coupler circuit, three-point hitch, and depending on model, PTO clutch. The 2520 tractor, the larger of the three machines, uses two Kanzaki gear pumps to power the same circuits. These pumps have a 4.9 cu. n. displacement and are mounted off the engine. A clutch-driven PTO is available at both the mid and rear of the 2000 Twenty series tractors rated 18 hp on the 2305 and 2320, and 20hp on the 2520. The mid-PTO placement allows the tractors to use Deere s 54D and 64D mower decks which have drive over capability for improved attachment versatility. “ A common request from our customers was to have quick and easy attachment and removal of mover decks,”  said Sundberg. “ John Deere responded by introducing the next generation of midmount mowers providing not only the flawless cut quality to which John Deere is known, but also best-in-class attachability.”  The tractors also have a new sloped hood design which provides greater visibility, especially when using the loader just one of the many attachments available with the tractors. Others include front blades, rotary brooms and cutters, mowers, snowblowers/throwers and tillers. A backhoe is also offered on the 2320 and 2520 for more versatility. Other standard features of the 2000 Twenty series tractors include four-wheel drive, position control rockshaft, standard steering brakes, and high-backed contoured suspended operator seat. Power steering and Deere s ergonomic Twin Touch two-pedal foot controls are also included. “ While homeowners will appreciate their versatility, ease-of-use and maneuverability, commercial customers will value the comfort, stability, efficiency and power of the new 2000 Twenty series tractors,”  said Sundberg. Deere will begin offering the 2320 2000 Twenty tractor in summer of 2006 while dealer shipment on 2520 and 2305 tractors has already begun. Traction Control Lifts Genie In Rough Terrain Enhancing one of its most popular lift models, Genie Indus tries has introduced a new traction control drive system on its GS-68Rtseries of rough terrain scissor lifts. Available on both the GS-2668RT and GS-3268RT lifts, two of six models Genie offers in its rough terrain series, the new drive system provides enhanced traction, giving the scissor lifts additional capability in wet and uneven terrain. “ Our customers, especially those in the Northeast, face some pretty severe conditions,”  said John Norton, Genie product manager. “ Depending on season, they can be up to their ankles in mud, knee deep in snow or covered with ice.”  Now with the traction control drive. Norton said, “ we took a really good machine and made it a great machine. It has greater utilization and can get to more areas in rough terrain environments.”  Designed for both indoor and out door applications, the GS-2668RT and GS-3268 RT scissor lifts are available with diesel, gasoline or propane power options, all of which are located on a swing-out engine tray for easier service access. The diesel power option is either a 0.90 L three-cylinder Kubota D905 engine rated 20 hp or a 1.13 L three-cylinder Perkins 403C-11 engine rated 26 hp. The Kubota engine is prepackaged with a Donaldson air cleaner and a Denso radiator, while the Perkins diesel is equipped with those components at Genie s Redmond, Wash., manufacturing facility. The machines can also be equipped with a dual fuel (gasoline and propane) option, which is a 0.75 L three cylinder Kubota DF752-EWZ engine rated 23 hp. Genie improved the hydraulic drive system by giving independent wheel control to both the 32 and 38ft. working height lifts. “ When we set out to improve the traction, we knew we had to take it one wheel at a time,”  said Norton. Genie s other rough terrain scissor lifts (the GS-3384 RT, GS-3390 RT, GS-4390 RT and GS-5390 RT) feature a similar traction drive that uses a closed-loop figuration. Beefing up the traction control drive system on the GS-2668 RT and GS-3268 RT required adding a HydraForce combiner/divider valve to the circuit, which directs flow from the Bosch Rexroth two-section hydraulic pump (0.488 cu.in. displacement per section) to White Drive Products motors mounted at the wheels. It is the combiner/divider valve that ensures flow reaches each wheel independently, allowing maximum ground power even during loss of contact. When a wheel loses contact with the ground, the traction drive is designed to maintain 75% power. Displacement in each of the wheel motors was also increased from 28.3 cu.in. to 32.7 cun.in., which Norton said improves gradability, giving the lifts access to 35 to 40% grades. It is also designed to reduce the average drive pressure, which minimizes wear and tear. Other features of the drive system include two drive modes: a parallel mode which assists in uphill travel using a slower speed with maximum torque; and a series mode which is ldeal for operation on flat, level ground, operating at a higher travel speed with less torque. Both machines are four wheel drive, have dynamic braking, a spring applied hydraulic release parking brake and foam-filled tires. Inside turning radius on the machines is 5 ft. The drive system hydraulics on GS-2668 RT and GS-3268 RT models also power the work platform. The two-section Bosch Rexroth pump supplies flow to Dongyang hydraulic lift cylinders to raise and lower the 66 sp.ft platform, operated by an electronically controlled Hall effect joystick which Norton said provides “ smoother control, particularly on rough terrain.”  Lift capacity on the work platform is 1000 to 1250 lb. The GS-2668 RT and GS-3268 RT lifts are available with a series of options such as automatic leveling hydraulic outriggers, a 2 KW generator to power hand tools, cold-start package and a series of light systems. A hot weather kit is standard on the machines. Weights on the GS-2668 RT and GS-3268 RT are 6373 and 8008 ld. Genie began offering the new traction control drive system on the GS-2668 RT and GS-3268 RT scissor lifts last fall. Both machines are manufactured at its Redmond, Wash, headquarter facilities. 小拖拉機(jī)執(zhí)行大任務(wù)  在約翰 Deere去年推出大型汽車底盤 4000和中型汽車底盤 3000二十級(jí)拖拉機(jī)后，他最近又置身于一系列堅(jiān)實(shí)底盤的研究，推出了新型的小型汽車底盤 2000二十級(jí)，其中兩個(gè)對(duì)于 2000 二十級(jí)來(lái)說(shuō)是新型的，是 24 馬力 2320 和 26.5 馬力2520，第三個(gè)是 24 馬力 2305，這個(gè)給 Deere 的 2000 級(jí)的緊密效用線提供了新的產(chǎn)品。  “更多的顧客需要 一種機(jī)器，這種機(jī)器既能完成大型的割草工作，又能做那種輕松的但是令人討厭的工作，而這種工作又是普通的割草機(jī)不能完成的。例如裝貨設(shè)備或者箱子切割機(jī)。” Sean Sundberg 說(shuō)。 Deere 這個(gè)王牌經(jīng)理，堅(jiān)實(shí)的效用拖拉機(jī)。“約翰回答用我們新的小型汽車底盤拖拉機(jī)可以幫助顧客用合理的價(jià)格為合適的工作選擇合適的拖拉機(jī)。”  在可以從 24 馬力到 58 馬力的十種二十級(jí)拖拉機(jī)中， 2320 和 2520 是這個(gè)團(tuán)體中最小的，這種新型的 2320 取代了 Deere 的 4110 型號(hào)機(jī)器，她是它的 4000十級(jí)的一部分，而且仍在有限的使用。 Deere 說(shuō)這種 2320 拖拉機(jī)有大拖拉機(jī)的特點(diǎn)，可以比它的前任者像 ROPS 這種機(jī)器提供更多的馬力，位置控制三處連接和航行控制。  這個(gè)新的 2520 二十級(jí)拖拉機(jī)是 2320 中的一部分，它也有一個(gè)有更大馬力的“大拖拉機(jī)”設(shè)置，一個(gè)直接的噴射機(jī)器，更多的水壓容量和更大的輪胎，這種2520 取代了 Deere 的 4115 致密實(shí)用拖拉機(jī)。  2305 拖拉機(jī)對(duì)于小型汽車底盤團(tuán)體也是新型的，它滿足了 Deere 對(duì)一種進(jìn)入水平的拖拉機(jī)的需要，這種拖拉機(jī)可以給操作者提供容易的直觀的操作。它以富有的房主為目標(biāo)，取代了 Deere 的 2210 型。“ 2305 型是小，但是是效力很大的拖拉機(jī)，它可以使那它是在割草，拉東西，裝載貨物或者耕種， 2350 都能應(yīng)用自如地，強(qiáng)有效地，輕松地，有效率的解決所有的工作，而且是以比其他明星都低的價(jià)格。  使這三種新型拖拉機(jī)云做的是 Yanmar Tier 2TNV 級(jí)柴油引擎，它從 24， 26.5和 24 馬力，每分鐘 3000 轉(zhuǎn)， A1.115L，三滾筒自然吸氣 Yanmar 機(jī)器被安裝在2320 和 2305 上，同時(shí)一個(gè)更大的 1.33L 的三滾筒操作平臺(tái)被安裝到 2520 上，從 Deere 可知， 2320 和 2520 拖拉機(jī)，比它們的前任者多 11%多的馬力，它 們是從 20 到 24 馬力， Yanmar 機(jī)器由傳統(tǒng)的拖拉機(jī)和 Blissfield，汽油冷卻機(jī)冷卻組件配置成形。  這個(gè)拖拉機(jī)的兩個(gè)速度的無(wú)限可變流體靜力的地面發(fā)動(dòng)機(jī)提供不用踩放（離合器）改變方向的無(wú)限選擇。一個(gè)綜合的不同的水閘被設(shè)計(jì)出來(lái)阻止拖拉機(jī)的阻力和拖力。這個(gè)發(fā)動(dòng)機(jī)是由 Kanzaki 多變的排水軸活塞，泵起作用的，它是傳送裝置和直接發(fā)動(dòng)機(jī)器的，這個(gè) 14 控制 2305 中的 11 控制 泵使 Kanzaki 排水軸輪，發(fā)動(dòng)機(jī)安裝在同樣的控制器上。這種“ U”型結(jié)構(gòu)，使用了機(jī)械控制，而且它是用 Kanzaki 軸輪組件組成的。  另外 ，輔助水力流動(dòng)以小型的 2320 和 2305 拖拉機(jī)為動(dòng)力由 Kanzaki 齒輪泵起控制，這個(gè)泵是傳送裝置，它在 2320 拖拉機(jī)上有 6.1 控制排水量和在 2305機(jī)器上有 5.5 控制排水量，它被用來(lái)提供操舵，控制連接系統(tǒng)和三處連接點(diǎn)，而且依靠 PTO 離合器來(lái)工作。  2520 拖拉機(jī)，即三種機(jī)器中最大的一個(gè)，用了兩個(gè) Kanzaki 輔助泵去控制同樣的線路，這種泵有 4.9 排水量，而且沒有安裝機(jī)器。  一個(gè)發(fā)動(dòng)離合器的 PTO 對(duì)于 2000 二十級(jí)拖拉機(jī)的中間和邊緣都合適，它們從 2305 和 2320 和 18 馬力到 2520 的 20 馬力，這個(gè)中間 PTO 裝置讓拖拉機(jī)使用 Deere 的 54D 和 64D 的割草裝置，它有提高附件性的功能。“我們顧客中一個(gè)普通的要求是有快，易的附件和移動(dòng)的發(fā)動(dòng)裝置?！?Sundberg 說(shuō)，“約翰 Deere用介紹下一代不僅有完美無(wú)缺的，約翰已經(jīng)知道的切割能力，而且也是最高級(jí)的能力的中型切割機(jī)回答。”  這種拖拉機(jī)還有一種新的有蓋的設(shè)計(jì)，這種設(shè)計(jì)提供了更大的能見度，尤其是當(dāng)僅僅有一種適合于拖拉機(jī)的可用的裝置設(shè)備的時(shí)候，其他的包括前葉片，旋轉(zhuǎn)機(jī)，切割機(jī)，割草機(jī)和鏟雪機(jī)和舵柄，一個(gè)反鏟挖土機(jī)也為 2320 和 2520 提供了更多的功能。  其他的 2000 二十級(jí)標(biāo)準(zhǔn)拖拉機(jī)，包羅四輪發(fā)動(dòng)位置操控，搖軸，標(biāo)準(zhǔn)操舵制動(dòng)器和高阻止外形中止作為，效能操舵和 Deere 的人機(jī)工程的雙接觸兩踏板，腳控也包括在內(nèi)?！爱?dāng)房主欣賞他們的多功能時(shí)易用和可調(diào)遺性，商業(yè)顧客會(huì)肯定新 2000 二十級(jí)拖拉機(jī)的方便、穩(wěn)固、功效和能力的。” Sanberg 說(shuō)。  當(dāng) 2520 和 2305 的處理裝運(yùn)已經(jīng)開始的時(shí)候， Deerej 將在 2336 年的夏天推出 2000 二十級(jí)拖拉機(jī)。  崎嶇地區(qū)的牽引控制升降機(jī)  為了提升他們最受歡迎的一款升降機(jī)， Genie 公司在他們的使用與崎嶇地區(qū)GS-68Rtseries 剪 刀型升降機(jī)上采用了牽引驅(qū)動(dòng)系統(tǒng)。這項(xiàng)技術(shù)應(yīng)用于 Genie公司生產(chǎn)的適用于崎嶇地區(qū)系列的六種型號(hào)中的 GS-2668RT和 GS-3268RT兩種型號(hào)。這個(gè)新驅(qū)動(dòng)系統(tǒng)提供加強(qiáng)牽引力，提升了