A method is presented for detecting a lowering of a current collector of a vehicle, in particular a rail vehicle, from a contact line, the method comprising: determining values of the electric current intensity of an electric current that is transmitted or flows between the contact line and the current collector in a measuring period; determining values of a current component of the electric current with the aid of the values of the electric current intensity; detecting the lowering with the aid of the values of the current component and a predefined criterion. Furthermore, a corresponding apparatus and a vehicle comprising the apparatus are disclosed.

A method is presented for detecting a lowering of a current collector of a vehicle, in particular a rail vehicle, from a contact line, the method comprising: determining values of the electric current intensity of an electric current that is transmitted or flows between the contact line and the current collector in a measuring period; determining values of a current component of the electric current with the aid of the values of the electric current intensity; detecting the lowering with the aid of the values of the current component and a predefined criterion. Furthermore, a corresponding apparatus and a vehicle comprising the apparatus are disclosed.

A current collector for a non-rail-bound, electric traction vehicle has an articulated support linkage, which, on the contact wire side, supports rocker assemblies with contact strips and, on the vehicle side, has a base joint for articulation to the traction vehicle. A pneumatic reciprocating drive is coupled to the support linkage for raising the rocker assemblies from a lower parking position into an upper contact position when the reciprocating drive is pressurized and for lowering into the parking position under its own weight when depressurization occurs. An exhaust air line connects the reciprocating drive to the environment to lower the rocker assemblies. An air accumulator and a downstream throttle valve are connected between the reciprocating drive and an environment opening of the exhaust air line. The rocker assemblies can be quickly lowered and nevertheless brought into the parking position without damage in order to disengage the current collector.

A current collector for a non-rail-bound, electric traction vehicle has an articulated support linkage, which, on the contact wire side, supports rocker assemblies with contact strips and, on the vehicle side, has a base joint for articulation to the traction vehicle. A pneumatic reciprocating drive is coupled to the support linkage for raising the rocker assemblies from a lower parking position into an upper contact position when the reciprocating drive is pressurized and for lowering into the parking position under its own weight when depressurization occurs. An exhaust air line connects the reciprocating drive to the environment to lower the rocker assemblies. An air accumulator and a downstream throttle valve are connected between the reciprocating drive and an environment opening of the exhaust air line. The rocker assemblies can be quickly lowered and nevertheless brought into the parking position without damage in order to disengage the current collector.

A current collector for a multi-pole contact line system has a lower arm that is pivotally mounted on a base and at least two upper arms that are pivotally mounted on an end of the lower arm opposite the base. The current collector also has at least two contact assemblies that are arranged on the respective upper arms and are associated with separate different poles of a contact line. The current collector further has a central compensating rocker arranged on the base and at least two connecting rods, the first end of each of which is pivotally connected to the central compensating rocker and the second end of each of which is pivotally connected to one of the at least two upper arms. An electrified transport system uses such a current collector.

A current collector for a multi-pole contact line system has a lower arm that is pivotally mounted on a base and at least two upper arms that are pivotally mounted on an end of the lower arm opposite the base. The current collector also has at least two contact assemblies that are arranged on the respective upper arms and are associated with separate different poles of a contact line. The current collector further has a central compensating rocker arranged on the base and at least two connecting rods, the first end of each of which is pivotally connected to the central compensating rocker and the second end of each of which is pivotally connected to one of the at least two upper arms. An electrified transport system uses such a current collector.

A current collector for a non-rail-bound, electric traction vehicle has an articulated support linkage, which, on the contact wire side, supports rocker assemblies with contact strips and, on the vehicle side, has a base joint for articulation to the traction vehicle. A pneumatic reciprocating drive is coupled to the support linkage for raising the rocker assemblies from a lower parking position into an upper contact position when the reciprocating drive is pressurized and for lowering into the parking position under its own weight when depressurization occurs. An exhaust air line connects the reciprocating drive to the environment to lower the rocker assemblies. An air accumulator and a downstream throttle valve are connected between the reciprocating drive and an environment opening of the exhaust air line. The rocker assemblies can be quickly lowered and nevertheless brought into the parking position without damage in order to disengage the current collector.

This rapid descent device comprises a valve comprising two chambers, at least one rub strip fastened to the body of the current-collector bow of the pantograph, intended to come into contact with the overhead wire and equipped with degradation detection circuit, at least one supply line of fluid to the main chamber of the valve, at least one feed line intended to feed this fluid to the pilot chamber of the valve, as well as at least one detection line extending from the pilot chamber of the valve, to feed a respective detection circuit.

The rapid descent device comprises means for temporary shut out of the feeding of fluid of the main chamber, which reliably ensures the initial raising of the pantograph until the pantograph comes into contact with the overhead wire.

A device and method for controlling a pneumatically actuated current collector for a vehicle, wherein the device includes a controlled system having a first pressure controller, a second pressure controller, and an actuation device, where at least one sensor, which is connected for signal conduction to a contact force controller of the controlled system, can be advantageously arranged on the current collector, the first pressure controller is coupled to the contact force controller, the second pressure controller and a pressure supply for signal conduction, the second pressure controller having a connection point for an actual pilot pressure from the first pressure controller, and signal-conducting connections are provided between the second pressure controller and the pressure supply and between the second pressure controller and the actuation device such that rapid adaptation of a contact force to variable operating conditions is enabled.

A device and method for controlling a pneumatically actuated current collector for a vehicle, wherein the device includes a controlled system having a first pressure controller, a second pressure controller, and an actuation device, where at least one sensor, which is connected for signal conduction to a contact force controller of the controlled system, can be advantageously arranged on the current collector, the first pressure controller is coupled to the contact force controller, the second pressure controller and a pressure supply for signal conduction, the second pressure controller having a connection point for an actual pilot pressure from the first pressure controller, and signal-conducting connections are provided between the second pressure controller and the pressure supply and between the second pressure controller and the actuation device such that rapid adaptation of a contact force to variable operating conditions is enabled.