公开(公告)号：US5586355A

公开(公告)日：1996-12-24

申请号：US408038

申请日：1995-03-21

Applicant: Donald Metz ,  James C. Alexander

Inventor： Donald Metz ,  James C. Alexander

IPC: B65G69/28 ,  E01D15/127

CPC classification number: B65G69/2882

Abstract: A vertically storing dock leveler comprises a deck, a pivot coupling the leveler to the mounting pit to allow the deck the rotate from a stored vertical position to an operative horizontal position and a source of power to rotate the deck. A sensor is mounted to the underside of the deck for delivering an output that ceases downward movement of said deck when a foreign object such as a human is sensed under said deck. The sensor comprises a wire mounted to span said deck at a position below it and a switch responsive to movement of said wire. The switch may be a mechanical, proximity or photoelectric type. The wire is fixed at one side of said deck and coupled to a pivoting member at the other side with the pivoting member normally positioned in proximity to said switch. A spring is employed to bias the pivoting member to a centered position relative to the switch in opposition to tension of the wire.

Abstract translation: 垂直存储的平台矫直机包括甲板，枢轴将平整器连接到安装坑，以允许甲板从存储的垂直位置旋转到操作水平位置，并且还具有使甲板旋转的动力源。 传感器安装在甲板的下侧，用于输送当在所述甲板下感测到诸如人的外来物体时，停止所述甲板的向下运动的输出。 传感器包括安装成在其下方的位置跨越所述甲板的线，以及响应于所述线的移动的开关。 开关可以是机械的，接近的或光电的。 线固定在所述平台的一侧并且在另一侧耦合到枢转构件，其中枢转构件通常位于所述开关附近。 使用弹簧将枢转构件相对于开关偏压到相对于线的张力的中心位置。

公开(公告)号：US5526545A

公开(公告)日：1996-06-18

申请号：US371570

申请日：1995-01-11

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28 ,  E01D1/00 ,  E01F1/00

CPC classification number: B65G69/2823 ,  B65G69/2882

Abstract: A dock leveler comprising having a deck pivotally mounted for movement between a stored generally horizontal position and an operative position. A lip assembly is pivotally attached to one end of the deck and has a lip movable between an extended operative position and a stored pendant position. The deck is movable by hydraulic cylinder. A switch is mounted to the underside of the deck and to produce an output to control movement of the deck. A sensor arm is operably coupled to the lip assembly for limited movement relative to lip assembly movement. The sensor arm has one end positioned relative to the switch to cause the switch to produce a signal that starts operation of the hydraulic cylinder to move the deck thereby raising the deck and allowing said lip to fall. As the lip falls the one end of said sensor arm moves away from the switch such that the output thereof terminates operation of the hydraulic cylinder thus allowing the lip to fully retract prior to lowering of the deck.

Abstract translation: 一种码头调平器，包括具有枢转安装的甲板，用于在所存储的大体水平位置和操作位置之间移动。 唇形组件枢转地附接到甲板的一端并且具有可在延伸的操作位置和存储的垂饰位置之间移动的唇缘。 甲板可通过液压缸移动。 开关安装在甲板的下侧，并产生一个输出以控制甲板的运动。 传感器臂可操作地联接到唇缘组件，以相对于唇部组件运动进行有限的移动。 传感器臂具有相对于开关定位的一端，以使开关产生开始操作液压缸的信号，以移动甲板，由此升高甲板并允许所述唇部落下。 当唇缘落下时，所述传感器臂的一端远离开关移动，使得其输出终止液压缸的操作，从而允许唇缘在甲板下降之前完全缩回。

公开(公告)号：US5511267A

公开(公告)日：1996-04-30

申请号：US371565

申请日：1995-01-11

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28 ,  E01D1/00

CPC classification number: B65G69/2823

Abstract: A dock leveler having a deck assembly, a first hydraulic cylinder to power said deck assembly to a raised position, lip mounted to said deck assembly, and a second hydraulic cylinder for powering said lip into an extended position. An hydraulic power circuit is coupled to the first and second hydraulic cylinders to control movement of said deck and lip. The hydraulic power circuit includes a pump to deliver fluid under pressure, a first valve operatively coupled to the pump to control fluid flow to the first hydraulic cylinder. A second valve is operatively coupled to the second hydraulic cylinder. An adjustable relief valve is coupled to the second valve to prevent a reduction of fluid pressure to the second hydraulic cylinder after the pump has supplied fluid under pressure through the second valve to extend the lip.

Abstract translation: 一种具有甲板组件的船坞调平器，用于将所述甲板组件驱动到升高位置的第一液压缸，安装到所述甲板组件的唇部，以及用于将所述唇缘供电到延伸位置的第二液压缸。 液压动力回路连接到第一和第二液压缸以控制所述甲板和唇缘的运动。 液压动力回路包括用于在压力下输送流体的泵，可操作地连接到泵以控制流体流向第一液压缸的第一阀。 第二阀可操作地联接到第二液压缸。 可调安全阀联接到第二阀，以防止泵在压力下通过第二阀提供流体以延伸唇缘之后降低到第二液压缸的流体压力。

公开(公告)号：US5505575A

公开(公告)日：1996-04-09

申请号：US301647

申请日：1994-09-07

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/00

CPC classification number: B65G69/003

Abstract: Apparatus used in a loading dock comprising a dock leveler mounted at the loading dock with a pit positioned below said dock leveler. A frame is mounted in the pit to support a vehicle restraint. The restraint has an arm assembly mounted to said frame for pivoting motion and a hook assembly having multiple hook elements mounted on the arm assembly and outward from the frame. A first actuator is mounted to the frame and engaging the arm assembly to drive both the arm assembly and the hook assembly to a lower inoperative position. A second actuator is mounted to the first actuator and the arm assembly to provide a constant upward bias tending to pivot the arm assembly and the hook assembly upward to an operative position.

Abstract translation: 在装载码头中使用的装置，包括安装在装载码头的码头调平器，位于所述码头矫直机下方的凹坑。 一个框架安装在坑中以支撑车辆限制。 约束具有安装到所述框架用于枢转运动的臂组件和具有安装在臂组件上并且从框架向外的多个钩元件的钩组件。 第一致动器安装到框架并且接合臂组件以将臂组件和钩组件驱动到较低的不工作位置。 第二致动器安装到第一致动器和臂组件以提供恒定的向上偏置，倾向于将臂组件和钩组件向上枢转到操作位置。

公开(公告)号：US5157801A

公开(公告)日：1992-10-27

申请号：US650373

申请日：1991-01-30

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28

CPC classification number: B65G69/2888

Abstract: A dock leveler has a barrier actuated by movement of the lip. The barrier is mounted for pivotable movement to be flush with the deck when the lip is extended. As the lip is lowered an arm contacts a guide plate mounted on said carrier to rotate said barrier upward. As said lip raises the guide plate lowers by gravity.

Abstract translation: 码头调平器具有通过唇部的移动而致动的屏障。 当唇缘延伸时，屏障被安装成可枢转运动以与甲板齐平。 当唇缘下降时，臂接触安装在所述托架上的引导板，以向上旋转所述屏障。 当所述唇缘升高时，引导板通过重力降低。

公开(公告)号：US5097557A

公开(公告)日：1992-03-24

申请号：US593402

申请日：1990-10-05

Applicant: David E. Salman ,  James C. Alexander

Inventor： David E. Salman ,  James C. Alexander

IPC: B65G69/28

CPC classification number: B65G69/287

Abstract: A dock leveler having a rigid flat deck and a hinge pin coupling the leveler to a loading dock. The deck is supported by a series of spaced box beams forming a trapezoidal cross-section with the underside of the deck.

Abstract translation: 船坞平整机具有刚性平台和将平整器连接到装载坞的铰链销。 甲板由一系列间隔的箱形梁支撑，形成与甲板下侧的梯形横截面。

公开(公告)号：US4988254A

公开(公告)日：1991-01-29

申请号：US232833

申请日：1988-08-16

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/00

CPC classification number: B65G69/003

Abstract: A vehicle restraint mountable against a dock face uses a linearly extensible actuator member to move a flat plate restraining device into a vehicle release or restraint position. The plate carries a bracket having a cam profile which via a connection or latch arm converts the linear movement of the drive member into rotational movement of the restraining plate. In the vehicle restraining position all loading on the restraining device is transmitted to the frame without any force component on the actuator.

公开(公告)号：US4979253A

公开(公告)日：1990-12-25

申请号：US373546

申请日：1989-06-30

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28

CPC classification number: B65G69/2823

Abstract: In a vertically storing dock leveler, more efficient, faster storage is enabled by providing a circuit which causes the lip of the leveler to maintain its position while the leveler platform is being raised. This position retention is in contrast to prior systems, in which raising the platform automatically caused pressure in the hydraulic cylinder controlling lip movement to drop, causing the lip to retract. By maintaining the lip position, lip extension can take less time.

Abstract translation: 在垂直存储的平台调平器中，通过提供一种电路来实现更高效，更快速的存储，该电路使得整平器的唇缘在校平器平台升高时保持其位置。 该位置保持与现有系统形成对比，其中提升平台自动地使液压缸中的压力控制唇部运动下降，导致唇部缩回。 通过保持唇部位置，唇部延伸可以花费更少的时间。

公开(公告)号：US4937906A

公开(公告)日：1990-07-03

申请号：US360184

申请日：1989-06-01

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28

CPC classification number: B65G69/2841

Abstract: A dockleveler employs a lip counterbalance mechanism to increase the force of the lip counterbalance spring as the deck is raised. A linkage is coupled at one end to the dockboard lip and at the other end to a level assembly. The lever in turn is adjustably coupled to the lip spring. As the dockboard is raised, a chain coupled to the frame and the linkage exerts a force causing initial raising of the lip while pivoting the linkage downward. This in turn causes the lever to rotate such that the force on the lever pushes the linkage further raising the lip.

Abstract translation: 一个码头水平仪采用唇缘平衡机构来增加唇板平衡弹簧的力量，因为甲板升高。 连杆在一端连接到船坞板唇缘，另一端连接到水平组件。 杠杆依次可调节地联接到唇形弹簧。 当船板升起时，连接到框架和连杆的链条施加一个力，引起唇部的初始升高，同时向下枢转连杆。 这又导致杠杆旋转，使得杠杆上的力推动连杆进一步升高唇部。