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    • 1. 发明授权
    • Method of making a vehicle transmission case
    • 制造车辆变速箱的方法
    • US4131225A
    • 1978-12-26
    • US807983
    • 1977-07-08
    • James J. BauerLarry E. AlbrightJames L. WernerThomas M. SagaserLonnie D. Hoechst
    • James J. BauerLarry E. AlbrightJames L. WernerThomas M. SagaserLonnie D. Hoechst
    • B60P1/50B60R13/08B60R21/11B62D11/18B62D21/18B62D49/00B62D49/02E02F9/10E02F9/16B23K31/02B60K17/04
    • E02F9/10B60P1/50B60R21/11B62D11/183B62D21/186B62D49/00B62D49/02E02F9/163B60R13/0838Y10T29/49893
    • A skid steer loader comprising an improved loader main frame and including an operator's compartment designed to present a low profile vehicle particularly suitable for low clearance applications. The loader main frame includes a center compartment partially defined by a pair of longitudinally extending, laterally spaced side beams. The engine for the vehicle is mounted at the rear of the center compartment and is acoustically enclosed by structural elements of the frame. A seat pan mounted on the side beams overlies the engine and transmission and separates the operator compartment from the center compartment. At a forward end of the center compartment an elongated transmission case forms a partial bottom wall and also encloses the chain and sprocket drive system of the vehicle. The side walls of the transmission case are displaced from the side walls of the frame, enabling the operator to straddle the case, thus reducing height requirements for both the operator compartment and the overall vehicle. Uprights secured to the side beams of the main frame at respective outer rear portions thereof partially enclose the rear portion of the center compartment and boom loader arms are secured to upper pivotal mountings provided on the uprights. Respective front ends of the loader arms are arcuately proportioned to extend forward of the wheels of the vehicle. An improved attachment mounting means incorporating a single mid-plane cylinder is provided between respective outer ends of the loader arms, the loader arms also carrying attachment means for implements used with the vehicle. A low profile overhead guard specially fabricated encloses the operator compartment and completes the assembly.This is a division of application Ser. No. 654,256, filed Feb. 2, 1976, U.S. Pat. No. 4,055,262.FIELD OF THE INVENTIONThis invention pertains to the art of skid steer loaders and more particularly to a main frame for an improved loader adapted to provide an improved operator's module and to incorporate a low profile particularly suitable for low clearance applications.BACKGROUND OF THE INVENTIONSkid steer loaders are vehicles possessing a high degree of maneuverability which are propelled and maneuvered by driving the wheels on one side of the vehicle at a different speed and/or in a different direction from those on the other side of the vehicle so as to achieve a turning motion. In the case where the wheels on one side are driven forwardly and those on the opposite side reversely, the loader will turn on its axis or, in other words, spin in its tracks. However, the operator's compartment of such vehicles are typically constricted, with the operator surrounded by the working elements of his machine and buffeted by engine and transmission noise.Typically, the skid steer loader's high levels of maneuverability are put to best use in operation wherein the loader's steering abilities easily enable it to negotiate around obstacles such as struts, columns and supports encountered in an enclosed environment and used to support the structure in which the loader is working. However, in many instances, particularly in agricultural applications, the requirements of the job include a necessity for a machine which has the ability to work under conditions of low clearance as well as conditions requiring high maneuverability. Such low clearance applications requiring a low profile vehicle suggest a further encroachment of the operator's space. Further, the necessity of providing a protective enclosure for the machine operator has heretofore limited the low clearance capability of such skid steer loaders. Heretofore low vehicle clearance has been achieved only at a sacrifice in load capability and power, and with additional encroachment on the operator's compartment.DESCRIPTION OF THE PRIOR ARTThe prior art vehicles generally present an upright box-like structure of uniform body width wherein all structural members are located inside the inner face of the wheels mounted on the vehicle. A skid steered loader having such a body construction and employing a hydrostatic drive comprising two independent variable speed transmissions, one mounted on each side for driving their respective sets of wheels, is disclosed in U.S. Pat. No. 3,635,365 entitled "Tractor Vehicle with Hydrostatic Drive Means" by James J. Bauer which issued Jan. 18, 1972 to the assignee of the present invention. The design of that vehicle is also the subject of U.S. Pat. No. Des. 224,588 entitled "Self-Propelled Loader Vehicle" by the same inventor, issued Aug. 8, 1972 also assigned to the assignee of the present invention.Efforts to improve the mobility of a skid steer loader vehicle also involved body design. For example, it is known that a skid steer loader should preferably have a wheel base shorter than the center-to-center distance between the wheels on opposite sides of the loader to reduce tire wear and resistance to skid turns. Further, proper weight distribution in a skid steer vehicle improves mobility. Thus the engine is located in the rear and partially counterweights the loader bucket in front. An earlier attempt to change the body design of the vehicle is disclosed in U.S. Pat. No. 3,895,728 entitled "Tractor Vehicle Having Material Handling Subframe" by John F. Heggen which issued July 22, 1975 to the assignee of the present invention. Although the frame described in the above patent was designed to isolate the loader and skid steering forces of the vehicle from the drive components, no consideration was given to improving the operator's compartment of such vehicle or designing such frame for low clearance applications.An early effort to change the profile of the skid steer loader is shown in U.S. Pat. No. Des. 231,482, entitled "Self-Propelled Loader Vehicle" by James J. Bauer, issued April 23, 1974, and assigned to the assignee of the present invention. This latter vehicle represents a scaled down version of a larger vehicle with some design modifications. The rear loader uprights and the boom arms project outwardly from the side frames to overlie the wheels of the vehicle, but an offset knee must be provided at the front end of the boom arms to accommodate power cylinders mounted on each loader arm for operating the loading bucket. Further, the operator enclosure becomes a fairly narrow, high enclosure, severly restricting side-to-side movement of the operator. Further, the load carrying capacity of such vehicle is severely limited since it remains primarily a scaled down version of a larger model.The present invention represents a substantial innovative advance over the prior art in that a vehicle having a mid-range operating capacity (800 lbs. load capability) presents a wider and lower profile specially suited for low clearance, agricultural applications with little sacrifice in operating capacity, and substantial increase in operator compartment space.Further substantial innovative advances have been made to accomplish the low profile of the present vehicle without sacrificing any substantial operating capacity and with marked improvement in operator comfort as summarized below.SUMMARY OF THE INVENTIONThe present invention comprises an improved main frame for a skid steer loader vehicle, the main frame comprising a center compartment partially defined by a pair of longitudinally extending, laterally spaced side beams. At the rear of the center compartment the main frame integrates a number of structural elements therefor to provide an acoustic enclosure for the engine for dissipating engine noises. Operator comfort is enhanced by substantially reduced noise levels for the loader in the operative mode. The improved acoustic enclosure for the engine reduces noise levels substantially, making the improved loader one of the quietest in the industry.A cross plate is welded between the longitudinally extending laterally spaced side beams at respective rear bottom portions to form a partial floor at the rear of the main frame. A front wall having an inwardly turned top flange is secured between the side beams at respective front portions thereof. A transmission case presenting an elongated, substantially narrow, profile is mounted at a forward end of the side beams to form a partial floor at the front of the main frame for a center compartment of the main frame. Skid steering forces as well as the normal loader forces are largely isolated from the drive components associated with and contained in the case. The interior compartment formed receives the engine at a rear portion thereof. The main frame substantially surrounds the center compartment in laterally spaced relation.Protruding from the case at respective front and rear ends thereof are the stub axles for the vehicle. Brackets mounted on the stub axles secure the case to the side beams of the main frame. Housed within the transmission case is the chain and sprocket drive for each set of wheels for the vehicle. Bolted to the outside of the transmission case are a pair of hydraulic motors which drive their respective set of wheels through the chain and sprocket drive contained within the transmission case. The transmission case is oil filled to lubricate the drive for the vehicle. The mounting of the drive motors on the outside of the case permits a relatively long, narrow configuration for the case enabling a re-design of the operator's compartment which substantially increases the amount of leg room in the operator's space by permitting the operator to straddle the transmission case.New fabrication methods for the transmission case include the manufacture of separate halves of the transmission case with the housings for the stub axles mounted in phase for boring. The housings for the stub axles are bored as mounted on the transmission case with the axle shafts thereafter rotatably mounted in the housings, the separate halves of the transmission case being assembled after the axle housings are bored. This technique substantially reduces welding distortion produced by mounting pre-bored stub axles in place after the transmission case is assembled.The chain drive for the vehicle has also been modified to improve the reliability of the vehicle. The new drive sprocket arrangement places the sprocket driving the rear wheel of each set of wheels at the outer end of the output shaft of the drive motor. The inner sprocket, mounted on the shaft between the outer sprocket and the drive motor, drives the front wheel of the set. Thus the rear chain offers substantial resistance to forces exerted on the vehicles under loading conditions. Torsional forces exerted on the vehicle under loading conditions are substantially greater for the front wheels. By mounting the chains for the front wheels on the inner sprockets moments for the cantilever mounted engine output shaftsare balanced, with the greater forces exerted on the front wheels equalized by the longer moment arms for the rear wheels.The engine is rubber mounted on the bottom cross plate provided at the rear of the center compartment. Suitably secured to the engine are dual axially aligned variable displacement pumps which drive the motors mounted on the transmission case. Mounted between an operator compartment and the engine is a hydraulic reservoir for the pumps.A pair of uprights are fabricated from plate material and are mounted at the rear of the side beams to structurally support loader arms mounted at upper pivotal mountings on each side. In the preferred embodiment the uprights are disposed outwardly of the main frame to lie behind the wheels mounted on the axles secured to the main frame of the vehicle. With the uprights of the loader vehicle lying behind the wheels of the vehicle, the loader arms, of necessity, must overlie the wheels of the vehicle. Accordingly, the front end of each loader arm has been arcuately proportioned to overlie the front wheels of the vehicle and to receive the outer end of the loader bucket thereon. To achieve this configuration the tilt cylinder for the loading bucket must be mounted inboard of the loader arms and the present invention incorporates a single mid-plane bucket tilt cylinder replacing the two cylinders mounted co-planar with the loader arms in the prior art.The improved transmission case, as well as the outboard mounted loader arms, provides a wider, lower prifile for the operator's compartment and permits a substantial reduction in the height of the overhead guard for the vehicle without reducing overall compartment height and a substantial increase in compartment width.Further innovative advances have been achieved in the fabrication of the overhead guard of the vehicle. The overhead guard comprises stamped halves appropriately folded. When the required halves have been formed they are assembled and welded in place to provide a completed guard for the vehicle with minimal assembly time. Mounting means are provided for the overhead guard to absorb energy for protection under roll-over conditions and to vibrationally isolate the operator compartment under normal vehicle operating conditions.The advantage recited above, as well as many others, will become more apparent to the reader in the detailed description set forth below when said description is viewed in conjunction with the drawings provided which are described as follows.
    • 一种滑移装载机,包括改进的装载机主框架,并且包括设计成呈现特别适合于低间隙应用的低轮廓车辆的操作室。 装载机主框架包括由一对纵向延伸的横向间隔开的侧梁部分地限定的中央隔室。 用于车辆的发动机安装在中间隔室的后部,并被框架的结构元件声学地包围。 安装在侧梁上的座椅平台覆盖发动机和变速箱,并将操作室与中间隔室分开。 在中间隔室的前端处,细长的变速箱形成部分底壁并且还包围车辆的链轮和链轮驱动系统。 变速器箱的侧壁从框架的侧壁移开,使操作员能够跨越箱体,从而降低了操作室和整个车辆的高度要求。 在相应的外后部处固定到主框架的侧梁的立柱部分地包围中心室的后部并且悬臂装载器臂被固定到设置在立柱上的上枢转安装件。 装载机臂的各个前端弓形地成比例地延伸到车辆的车轮的前方。 在装载机臂的相应的外端之间设有一个结合有单个中平面圆筒的改进的附接安装装置,装载臂也承载与车辆一起使用的工具的附接装置。 专门制造的低调高架防护罩包围操作室并完成组装。
    • 2. 发明授权
    • Loader main frame for skid steer loader
    • 装载机主架为滑移装载机
    • US4055262A
    • 1977-10-25
    • US654256
    • 1976-02-02
    • James J. BauerLarry E. AlbrightJames L. WernerThomas M. SagaserLonnie D. Hoechst
    • James J. BauerLarry E. AlbrightJames L. WernerThomas M. SagaserLonnie D. Hoechst
    • E02F3/34B60P1/50B60R13/08B60R21/11B62D11/02B62D11/18B62D21/18B62D49/00E02F9/08E02F9/10E02F9/16
    • E02F9/10B60P1/50B60R21/11B62D11/183B62D21/186B62D49/00E02F9/085E02F9/163B60R13/0838
    • A skid steer loader comprising an improved loader main frame and including an operator's compartment designed to present a low profile vehicle particularly suitable for low clearance applications. The loader main frame includes a center compartment partially defined by a pair of longitudinally extending, laterally spaced side beams. The engine for the vehicle is mounted at the rear of the center compartment and is acoustically enclosed by structural elements of the frame. A seat pan mounted on the side beams overlies the engine and transmission and separates the operator compartment from the center compartment. At a forward end of the center compartment an elongated transmission case forms a partial bottom wall and also encloses the chain and sprocket drive system of the vehicle. The side walls of the transmission case are displaced from the side walls of the frame, enabling the operator to straddle the case, thus reducing height requirements for both the operator compartment and the overall vehicle. Uprights secured to the side beams of the main frame at respective outer rear portions thereof partially enclose the rear portion of the center compartment and boom loader arms are secured to upper pivotal mountings provided on the uprights. Respective front ends of the loader arms are arcuately proportioned to extend forward of the wheels of the vehicle.
    • 一种滑移装载机,包括改进的装载机主框架,并且包括设计成呈现特别适合于低间隙应用的低轮廓车辆的操作室。 装载机主框架包括由一对纵向延伸的横向间隔开的侧梁部分地限定的中央隔室。 用于车辆的发动机安装在中间隔室的后部,并被框架的结构元件声学地包围。 安装在侧梁上的座椅平台覆盖发动机和变速箱,并将操作室与中间隔室分开。 在中间隔室的前端处,细长的变速箱形成部分底壁并且还包围车辆的链轮和链轮驱动系统。 变速器箱的侧壁从框架的侧壁移开,使操作员能够跨越箱体,从而降低了操作室和整个车辆的高度要求。 在相应的外后部处固定到主框架的侧梁的立柱部分地包围中心室的后部并且悬臂装载器臂被固定到设置在立柱上的上枢转安装件。 装载机臂的各个前端弓形地成比例地延伸到车辆的车轮的前方。
    • 3. 发明授权
    • Latch mechanism for a skid-steer loader with a roll over protective
structure having a tilt-back capability
    • 具有具有倾斜能力的滚动保护结构的滑移装载机的闩锁机构
    • US4408672A
    • 1983-10-11
    • US228646
    • 1981-01-26
    • Larry E. AlbrightLonnie D. Hoechst
    • Larry E. AlbrightLonnie D. Hoechst
    • B60R21/13B62D27/04
    • B60R21/131
    • The Roll Over Protective Structure (ROPS) or cab enclosure of a skid-steer loader has been modified and a latch mechanism has been added to the loader to facilitate servicing of the loader. The Roll Over Protective Structure (ROPS) or cab enclosure is now positively biased at its rear pivot point away from the frame by means of a torsion spring mounted between the cab and the roll over protective structure. In addition a latch mechanism for the cab enclosure is provided, the latch mechanism comprising a cam member fixedly mounted on the frame and a latch member fixedly mounted on the cab enclosure. The latch member is positively biased toward the cam surface of the cam member and slides along the cam member as the cab enclosure is rotated away from the frame. At the end of its travel the latch bar slides into a notch provided on the cam member that positively retains the cab enclosure in a full tilt-back position while the loader is being serviced.
    • 滑移装载机的翻滚保护结构(ROPS)或驾驶室外壳已经被修改,并且已经将一个闩锁机构添加到装载机中以便于装载机的维修。 滚动保护结构(ROPS)或驾驶室外壳现在通过安装在驾驶室和滚动保护结构之间的扭转弹簧在其后枢转点处远离框架正向偏置。 此外,提供了一种用于驾驶室外壳的闩锁机构,所述闩锁机构包括固定地安装在所述框架上的凸轮构件和固定地安装在所述驾驶室外壳上的闩锁构件。 当驾驶室外壳远离框架旋转时,闩锁构件被正向偏压到凸轮构件的凸轮表面并且沿凸轮构件滑动。 在其行进结束时,闩锁杆滑动到设置在凸轮构件上的凹口中,在装载机被维修时,将驾驶室外壳积极地保持在完全倾斜的位置。
    • 4. 发明授权
    • Vertical lift loader boom
    • 立式起重机吊臂
    • US5169278A
    • 1992-12-08
    • US794343
    • 1991-11-12
    • Lonnie D. HoechstOrlan J. LoraasWally L. KaczmarskiLarry E. Albright
    • Lonnie D. HoechstOrlan J. LoraasWally L. KaczmarskiLarry E. Albright
    • E02F3/34
    • E02F3/3405
    • A loader boom assembly has articulated lift arms that have first and second lift arm sections pivotally mounted together. The rear lift arm section is pivotally mounted to rear portions of a prime mover frame. The main lift arm section is substantially longer than the first lift arm section and pivots on the outer end of the rear lift arm link. The lift arm sections are in a folded position when the lift arms are lowered, and a control link is provided to cause the lift arms to unfold as the lift arms are raised to keep the forward portion of the main lift arm section moving along a generally vertical path after a selected lift height to provide a better forward reach of the boom assembly at the higher range of lift. The proportional lengths of the lift arm sections and the control link and the placement of the pivot points and actuators on the main frame also provide structural integrity and efficient power utilization.
    • 装载机臂组件具有铰接提升臂,其具有枢转地安装在一起的第一和第二提升臂部分。 后提升臂部枢转地安装在原动机框架的后部。 主提升臂部分基本上比第一提升臂部分长,并且在后提升臂连杆的外端上枢转。 当提升臂下降时,提升臂部分处于折叠位置,并且提供控制连杆以使提升臂在提升臂升高时展开,以保持主提升臂部分的前部沿着一般移动 在选定的升降高度之后的垂直路径,以提供在较高升程范围内的起重臂组件的更好的前进距离。 提升臂部分和控制链路的比例长度以及枢轴点和致动器在主框架上的放置也提供了结构完整性和有效的功率利用。
    • 6. 发明授权
    • Loader operator restraint system
    • 装载机操作员约束系统
    • US4397371A
    • 1983-08-09
    • US228536
    • 1981-01-26
    • Carman P. LynnesEugene J. KielbJoseph M. MatherLarry E. AlbrightLonnie D. Hoechst
    • Carman P. LynnesEugene J. KielbJoseph M. MatherLarry E. AlbrightLonnie D. Hoechst
    • E02F9/24B60R21/00B60R21/02B60R21/13E02F9/16E02F9/20B60R21/10
    • E02F9/2004B60R21/02B60R21/131B60R2021/0074
    • A front end loader in the form of a skid-steer loader which includes a power operated working implement and control apparatus that has a plurality of operative positions for supplying power to the working implement and at least one neutral position where power cannot be supplied to the working implement. The control apparatus is capable of being manipulated by the operator of the loader to place the control apparatus in any one of the selected operative positions or the neutral position. An operator restraint member is mounted on the skid-steer loader and has an engaged position for securing the operator to the operator position during operation of the loader and a disengaged position to permit the operator to enter or leave the loader. A locking member is engaged with the control apparatus when the restraint member is in its disengaged position and is disengaged from the control apparatus when the restraint member is in its engaged position.
    • 具有滑动转向装载机形式的前端装载机,其包括动力操作的作业工具和控制装置,所述操作工具和控制装置具有多个操作位置,用于向所述作业工具供电,以及至少一个中性位置,其中不能向所述工作装置供电 工作工具 控制装置能够由装载机的操作者操纵,以将控制装置放置在所选择的操作位置或中立位置中的任一个中。 操作者约束构件安装在滑移装载机上,并且具有接合位置,用于在操作装载机期间将操作者固定到操作者位置,并且具有脱离位置以允许操作者进入或离开装载机。 当约束构件处于其接合位置时,锁定构件与控制装置接合,并且当限制构件处于其接合位置时与锁定构件脱离接合。
    • 10. 发明授权
    • Loader operator restraint
    • 装载机操作员约束
    • US4391344A
    • 1983-07-05
    • US228534
    • 1981-01-26
    • Henry J. WeberLonnie D. HoechstJames R. ChristensenVerne C. Watts
    • Henry J. WeberLonnie D. HoechstJames R. ChristensenVerne C. Watts
    • E02F9/24B60R21/00B60R21/02B60R21/13E02F9/16B60R21/10B60R25/06
    • B60R21/02B60R2021/0074
    • An operator restraint member having two ends is pivotally mounted at each end to a skid-steer loader. The restraint member has an engaged position for securing the operator to the operator position during operation of the loader and a disengaged position to permit the operator to enter or leave the loader. A friction device is connected to one end of the restraint member to retain the restraint member in the rotative position selected by the operator until repositioned. An automatic lock-quick release latch is connected to the other end of the restraint member for selectively locking the seat bar in its engaged position. A locking assembly is engaged with the control apparatus when the restraint member is in its disengaged position and undergoes pivotal movement to become disengaged from the control apparatus when the restraint member is in its engaged position.
    • 具有两端的操作者约束构件在每一端枢转地安装在滑移装载机上。 约束构件具有接合位置,用于在操作装载机期间将操作者固定到操作者位置,并且具有脱离位置,以允许操作者进入或离开装载机。 摩擦装置连接到限制构件的一端,以将约束构件保持在由操作者选择的旋转位置,直到重新定位。 自动锁定快速释放闩锁连接到约束构件的另一端,用于选择性地将座椅杆锁定在其接合位置。 当约束构件处于其接合位置时,当约束构件处于其分离位置时,锁定组件与控制装置接合并且经受枢转运动以与控制装置脱离接合。