公开(公告)号：US5774920A

公开(公告)日：1998-07-07

申请号：US650823

申请日：1996-05-20

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28 ,  E01D1/00

CPC classification number: B65G69/2852

Abstract: A dock leveler having a frame adapted to be fixedly mounted at a dock with a deck, pivotedly mounted to the frame at one end thereof, and having a pivotable lip at the other end. A spring is mounted to the deck and the frame and supports the deck. An electric actuator is coupled to the deck and the frame and moves the deck from a generally horizontal stored position into an operative position. A control circuit is employed for controlling operation of the electrical actuator. The actuator carries a limit switch which is responsive to movement so that power is terminated to the actuator when the deck reaches either a stored or operative position.

Abstract translation: 平台矫直机，其具有适于被固定地安装在具有甲板的码头的框架，在其一端枢转地安装到框架，并且在另一端具有可枢转的唇缘。 弹簧安装在甲板和框架上并支撑甲板。 电动致动器联接到甲板和框架，并且将甲板从大致水平的存储位置移动到操作位置。 采用控制电路来控制电致动器的操作。 致动器带有一个响应于运动的限位开关，当机组到达存储或操作位置时，动力终止于致动器。

公开(公告)号：US5743697A

公开(公告)日：1998-04-28

申请号：US679719

申请日：1996-07-11

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/00 ,  B65G67/02

CPC classification number: B65G69/005

Abstract: A system for restraining a vehicle, such as a truck having a pair of separated tires mounted on an axle, positioned at a loading dock. A member is movable from a stored position near or under the loading dock to an operative position under the vehicle and located between said separated tires. A pair of restraining elements are mounted on the movable member and are movable from a stored position between the tires to an outward extended position where each of the restraining elements engage a respective one of said pair tires. A mechanism, such as an hydraulic system, is mounted to said member at one end and to a fixed point at the other to move the member to a position under the vehicle. The pair of restraining elements is moved to the outward extended position by action of the moving mechanism for the member or by movement of a sensor that contacts a tire.

公开(公告)号：US5709518A

公开(公告)日：1998-01-20

申请号：US562957

申请日：1995-11-27

Applicant: James C. Alexander ,  Robert C. Hersey

Inventor： James C. Alexander ,  Robert C. Hersey

IPC: B65G69/00 ,  B65G67/02

CPC classification number: B65G69/005

Abstract: A chocking device for securing a vehicle at a loading dock having a guide rail mountable to a driveway and a carriage movable on the guide rail. A drive mechanism, which may be hydraulic or electric is employed to advance said carriage from a stored position to a position proximate to a wheel of the vehicle. A chock assembly is pivotedly mounted on the carriage and is movable by the drive mechanism from a retracted position to an engaging position. In one embodiment the chock assembly comprises an arm having a sensor bar to contact one portion of the wheel and a chock plate movable in response to contact of the sensor bar against the wheel to contact another portion of the wheel and block movement of the vehicle. A lock assembly is mounted on the guide rail for movement thereon, and is moved by the drive mechanism into contact with the chock plate to restrain the chock plate in the extended position. In another embodiment of the locking device, a leadscrew advances the chock plate and by sensing the load the power is terminated when the plate is firmly in contact with the wheel.

Abstract translation: 一种用于将车辆固定在具有可安装到车道的导轨的装载座上的可移动装置，以及可在导轨上移动的托架。 可以采用液压或电动的驱动机构将所述托架从存储位置推进到靠近车辆的车轮的位置。 轴承组件枢转地安装在滑架上，并且可通过驱动机构从缩回位置移动到接合位置。 在一个实施例中，所述轴承组件包括臂，所述臂具有用于接触所述车轮的一部分的传感器杆和响应于所述传感器杆接触所述车轮以接触所述车轮的另一部分并阻止所述车辆的运动而可移动的轴承座。 锁定组件安装在导轨上用于在其上运动，并且由驱动机构移动以与轴承座接触，以将轴承座限制在延伸位置。 在锁定装置的另一个实施例中，一个丝杠推进挡块板，并且当该板牢固地与该轮接触时，通过感测该负载来切断该动力。

公开(公告)号：US5586356A

公开(公告)日：1996-12-24

申请号：US563061

申请日：1995-11-27

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28 ,  E01D1/00

CPC classification number: B65G69/2841

Abstract: An automatic return to dock mechanism for a dockboard having a frame, a deck pivotally mounted to the frame and a lip pivotally mounted to an outboard end of said deck. The lip has an arm mounted to a lower surface. A crank mechanism comprises a pivoting arm member mounted to the frame and a pushrod extending under the deck having one end thereof coupled to said pivoting arm member and a slot member attached to the other end of the push rod. The slot member engages a portion of said arm mounted to the lip. A spring biases the slot member to urge engagement with the arm mounted to the lip. Aa hold down mechanism that permits the deck to raise and lower includes a linkage to the pivoting arm member. As the lip moves from an extended position to a pendant position, the pushrod is moved in one direction by action of the arm engaged in the slot member causing the pivoting arm member to disengage the hold down allowing said deck to raise. As the lip continues to fall the arm moves in the slot allowing the push rod to move in a second direction thereby allowing the hold down mechanism to re-engage the deck and return to dock level.

Abstract translation: 用于具有框架的平台板的自动返回对接机构，枢转地安装到框架的甲板和枢转地安装到所述甲板的外侧的唇部。 唇部具有安装到下表面的臂。 曲柄机构包括安装到框架上的枢转臂构件和在甲板下方延伸的推杆，其一端连接到所述枢转臂构件，以及连接到推杆另一端的狭槽构件。 槽构件与安装到唇缘的所述臂的一部分接合。 弹簧偏压槽构件以促使与安装到唇缘的臂的接合。 具有允许甲板升高和降低的Aa压紧机构包括与枢转臂构件的连杆。 当唇缘从延伸位置移动到垂悬位置时，推杆通过接合在狭槽构件中的臂的作用沿一个方向移动，导致枢转臂构件脱离压紧，允许所述甲板升高。 当唇缘继续下降时，臂在槽中移动，允许推杆沿第二方向移动，从而允许按压机构重新接合甲板并返回到对接水平。

公开(公告)号：US5553343A

公开(公告)日：1996-09-10

申请号：US399223

申请日：1995-03-06

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28 ,  E01D1/00

CPC classification number: B65G69/2888

Abstract: A dock leveler has a frame mounted at a dock, a deck pivoted at one end to said frame and a lip pivotally attached to said deck at the other end thereof. The deck is movable between a first operable position where the deck is substantially horizontal and the lip extended, a second operative position where the lip hangs pendant and the deck is declined and an inoperative position where the deck is substantially horizontal and the lip hangs pendant. A barrier is mounted to have a raised operative position protruding above the deck and an inoperative position flush with the deck. A mechanical linkage automatically raises the barrier when the deck is in the inoperative position and permits the barrier to be lowered to its inoperative position when the deck is in either operative position. The linkage is responsive to both movement of the deck and the position of the lip.

Abstract translation: 码头调平器具有安装在码头的框架，在一端枢转到所述框架的甲板和在其另一端枢转地附接到所述甲板的唇部。 甲板可以在甲板基本上水平的第一可操作位置和延伸的唇缘之间移动，第二操作位置，其中唇悬挂吊坠和甲板被坠落，并且在甲板基本上水平并且唇缘悬挂吊坠的不工作位置。 屏障被安装成具有突出在甲板上方的升高的操作位置和与甲板齐平的不工作位置。 当甲板处于非工作位置时，机械联动装置自动提升挡板，并且当甲板处于任一操作位置时允许挡板降低到其不工作位置。 该联动装置响应于甲板的运动和唇缘的位置。

公开(公告)号：US5454682A

公开(公告)日：1995-10-03

申请号：US245541

申请日：1994-05-18

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/00 ,  B65G67/02

CPC classification number: B65G69/003

Abstract: A vehicle restraint employs a 4 bar linkage to lift a restraining member to a position that engages a vehicle thus restraining it at a loading dock. The linkage is upwardly based to hold the unit in an engaging position and may be retracted by using any of a number of mechanical techniques such as hydraulic electric or pneumatic power. The 4 bar linkage transfers all loading on the unit from the ICC to the frame thus isolating any driven members from overloads. A secondary hook mounted to the 4 bar linkage is pivotally spring loaded to limit vehicle travel away from the dock and to extend the capture range of the device in the case of ICC's bars that are damaged or mounted at non-standard positions at the rear of the vehicle.

公开(公告)号：US5303443A

公开(公告)日：1994-04-19

申请号：US862440

申请日：1992-04-02

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28 ,  B65G69/24

CPC classification number: B65G69/2841

Abstract: A hold down device for a dock leveler employs a pair of telescoping members sliding with respect to each other. One member is coupled to the deck and the other to the leveler frame. A resilient member biases the telescoping members toward each other but provides for a degree of float in the system. A brake shoe has a ramp surface and is biased against one of the members as they separate. A release lever moves the brake shoe for disengagement as the leveler is lowered. Thereafter the brake shoe engages and movement is via the resilient member. If the leveler moves down such that the resilient member is compressed, as the telescoping members compress they cause the release member to move thereby slipping the brake. This in turn allows the telescoping members to reset and re-engage the brake.

Abstract translation: 用于码头调平器的按压装置采用相对于彼此滑动的一对伸缩构件。 一个构件联接到甲板上，另一个连接到平整机框架。 弹性构件将伸缩构件朝向彼此偏压，但在系统中提供一定程度的浮子。 制动蹄具有坡道表面，并且当它们分离时被偏压抵靠其中一个构件。 当调平器下降时，释放杆移动制动蹄以脱开。 此后，制动蹄接合并通过弹性构件移动。 如果调平器向下移动使得弹性构件被压缩，当伸缩构件压缩时，它们使释放构件移动，从而滑动制动器。 这又允许伸缩构件复位并重新接合制动器。

公开(公告)号：US5259718A

公开(公告)日：1993-11-09

申请号：US13651

申请日：1993-01-28

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/00 ,  B65G67/02

CPC classification number: B65G69/003

Abstract: A vehicle restraint employs a 4 bar linkage to lift a restraining member to a position that engages a vehicle thus restraining it at a loading dock. The linkage is upwardly biased to hold the unit in an engaging position and may be retracted by using any of a number of mechanical techniques such as hydraulic electric or pneumatic power. The 4 bar linkage transfers all loading on the unit from the ICC to the frame thus isolating any driven members from overloads. A secondary hook mounted to the 4 bar linkage is pivotally spring loaded to limit vehicle travel away from the dock and to extend the capture range of the device in the case of ICC's bars that are damaged or mounted at non-standard positions at the rear of the vehicle.

Abstract translation: 车辆限制器采用4杆联动装置将限制构件提升到与车辆接合的位置，从而将其限制在装载坞。 联动装置被向上偏置以将装置保持在接合位置，并且可以通过使用诸如液压电动或气动动力的许多机械技术中的任何一种来缩回。 4 bar连接将本机上的所有负载从ICC传输到框架，从而将任何被驱动的构件从过载中隔离开来。 安装在4杆联动装置上的副钩被枢转地弹簧加载，以限制车辆行驶离开码头，并且在ICC的杆的情况下扩展装置的捕获范围，这些杆被损坏或安装在非标准位置的后方 机动车。

公开(公告)号：US5088143A

公开(公告)日：1992-02-18

申请号：US622068

申请日：1990-12-04

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/28

CPC classification number: B65G69/2841

Abstract: A dock leveler having an operative lever arm assembly to assist in raising the lip by spring action. The assembly comprises a latch arm which selectively engages a series of spaced stop positions on the underside of the deck to support the lip in an outward postion should it not fully extend during the raising of the deck. A hydraulic shock absorber is adapted to be coupled to the lever assembly at a variety of spaced mounting points on the lever assembly.

Abstract translation: 平台矫直机具有操作杆臂组件，以通过弹簧作用来帮助提升唇部。 该组件包括一个闩锁臂，其选择性地接合在甲板的下侧上的一系列间隔开的停止位置，以便在升高甲板期间不完全延伸时，以向外的位置支撑唇缘。 液压减震器适于在杠杆组件上的各种间隔的安装点处联接到杠杆组件。

公开(公告)号：US5026242A

公开(公告)日：1991-06-25

申请号：US482476

申请日：1990-02-21

Applicant: James C. Alexander

Inventor： James C. Alexander

IPC: B65G69/00

CPC classification number: B65G69/003

Abstract: A vehicle restraint for securing a truck to a loading dock. The restraint is actuated by a vehicle ICC bar which moves an arm of the restraint. By use of a cam follower and spring system a restraint member is raised using the motion of the arm to transfer energy to raise the restraint. In the upright position, the restraint captures and prevents a truck from backing away from the dock. The system is held and biased into the engaging position and is released by a mechanical trapping mechanism.

Abstract translation: 用于将卡车固定到装卸码头的车辆限制器。 约束通过移动约束臂的车辆ICC杆致动。 通过使用凸轮从动件和弹簧系统，使用臂的运动来提升约束件以传递能量以提高约束。 在直立位置，限制捕捉并防止卡车从码头背离。 该系统被保持并偏压到接合位置并被机械捕获机构释放。