A suspension system for a land vehicle is provided with at least one actuator connected to a chassis and an axle of a land vehicle spaced apart from a pivotal connection of the axle. A suspension circuit is in cooperation with the at least one actuator. A controller is in operable communication with the suspension circuit and is programmed to receive input indicative of a travel speed of the land vehicle. The suspension circuit is closed at a low speed travel range to permit the axle to pivot in response to variations in an underlying support surface. The suspension circuit is opened to permit selective actuation of the at least one actuator at a higher speed travel range in response to variations in the underlying support surface.

An apparatus includes a base frame, first and second bins, first and second hydraulic assemblies, and a computer controller. The first hydraulic assembly is configured to selectively raise and lower the first bin relative to the base frame. The second hydraulic assembly is configured to selectively raise and lower the second bin relative to the base frame. The first and second hydraulic assemblies are individually actuable, and their actuation is coordinated by the controller. In another aspect, a method for transferring product using an apparatus includes inputting to a computer controller a first threshold rate of change in weight signals of a weight sensor; relaying a plurality of weight signals from the weight sensor to the controller; calculating a determination by the controller at least in part on whether the threshold rate of change has been exceeded; and automating actuation of a hydraulic assembly based on the determination.

An apparatus includes a base frame, first and second bins, first and second hydraulic assemblies, and a computer controller. The first hydraulic assembly is configured to selectively raise and lower the first bin relative to the base frame. The second hydraulic assembly is configured to selectively raise and lower the second bin relative to the base frame. The first and second hydraulic assemblies are individually actuable, and their actuation is coordinated by the controller. In another aspect, a method for transferring product using an apparatus includes inputting to a computer controller a first threshold rate of change in weight signals of a weight sensor; relaying a plurality of weight signals from the weight sensor to the controller; calculating a determination by the controller at least in part on whether the threshold rate of change has been exceeded; and automating actuation of a hydraulic assembly based on the determination.

The invention relates to a hydraulic system for controlling or regulating a hydraulic cylinder comprising—at least one hydraulic cylinder, at least one hydraulic unit by means of which the hydraulic cylinder can be optionally connected to a pressure source and a tank and at least one control or regulating device for controlling or regulating the supply of hydraulic fluid to the hydraulic cylinder, the control or regulating device forms a first assembly and the hydraulic unit forms a second assembly which are structurally separate from one another and fluidically connected, wherein the supply of hydraulic fluid to the hydraulic cylinder can be predominantly controlled or regulated by the control or regulating device from outside the hydraulic unit and wherein the hydraulic unit is rigidly fastened on the hydraulic cylinder.

A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

A hydraulic control circuit operable to selectively hydraulically link first and second hydraulic actuators and to bypass that hydraulic link.

A controlling device of a forklift executes a stopping process of stopping lowering of a fork by a lift device when a detection sensor is separated from a first facing surface while the fork is being lowered by the lift device in a placing operation, a forward tilting process executed after execution of the stopping process, the forward tilting process controlling the tilt device to tilt the fork forward until the tilt angle reaches a limit value, and a returning process of sequentially obtaining values of the tilt angle during execution of the forward tilting process and tilting the fork rearward when the value of the tilt angle stops changing before the tilt angle reaches the limit value. The returning process is not executed in a case in which the tilt angle reaches the limit value.

A controlling device of a forklift executes a stopping process of stopping lowering of a fork by a lift device when a detection sensor is separated from a first facing surface while the fork is being lowered by the lift device in a placing operation, a forward tilting process executed after execution of the stopping process, the forward tilting process controlling the tilt device to tilt the fork forward until the tilt angle reaches a limit value, and a returning process of sequentially obtaining values of the tilt angle during execution of the forward tilting process and tilting the fork rearward when the value of the tilt angle stops changing before the tilt angle reaches the limit value. The returning process is not executed in a case in which the tilt angle reaches the limit value.

The invention relates to a hydraulic control system of a hoist drive of a lifting frame of an industrial truck, wherein the control system has a directional control valve device which is connected with a delivery line of a hydraulic pump, a reservoir line leading to a reservoir and a connecting line leading to the hoist drive, wherein the directional control valve device is configured to control the lifting operation and the lowering operation of the hoist drive. The control system has a pressure protection valve that is associated with the connecting line, wherein the pressure protection valve is configured to limit a peak pressure introduced into the lifting frame in the event of a fault scenario of the directional control valve device.

The invention relates to a hydraulic control system of a hoist drive of a lifting frame of an industrial truck, wherein the control system has a directional control valve device which is connected with a delivery line of a hydraulic pump, a reservoir line leading to a reservoir and a connecting line leading to the hoist drive, wherein the directional control valve device is configured to control the lifting operation and the lowering operation of the hoist drive. The control system has a pressure protection valve that is associated with the connecting line, wherein the pressure protection valve is configured to limit a peak pressure introduced into the lifting frame in the event of a fault scenario of the directional control valve device.