11 results about "Multi unit" patented technology

A symmetrical multi-unit railroad freight car, such as a 3-pack railroad intermodal well car, has body units that are connected symmetrically. The body units have a symmetrical arrangement of end trucks and shared trucks. The end trucks are 70 Ton Trucks. The shared trucks are 125 Ton trucks. The trucks have passive steering using geometric rocker stiffnesses. The rockers in the end trucks have a smaller radius of curvature than the rockers in the shared trucks. The spring groups in the shared trucks are stiffer than the spring groups in the end trucks. The spring groups in the end trucks have a different proportion of damping when empty, a shorter live load range of travel, and greater reserve travel than the shared trucks. The end trucks and the shared trucks have four-cornered damper groups that have the same sized damper wedges. The damper wedges have non-metallic wear pads.

The application discloses a bidirectional self-adaptive passive actuating mechanism and belongs to the technical field of buffering, shock absorption and displacement compensation. The mechanism is assembled without pre-tightening and is symmetrically arranged with bilateral elastic components. Only unilateral independent load bearing works under unilateral load, and the bilateral elastic components work alternately under bidirectional load, so that passive self-adaptive centering and bidirectional buffering and resetting are realized. The pure mechanical structure of the application does not need electric control, has strong environmental adaptability and long service life, can be used individually or combined in multiple units, and is suitable for scenes such as flexible connection, multi-dimensional compensation, spoke support and surface-to-surface force transmission.

Each of the multiple unit converters comprises a main circuit (30), a control circuit (32) configured to control multiple switching elements (11-14) according to a control signal received from a control device, a power supply (50) that generates a power supply voltage by stepping down the voltage of a first capacitor (15) and supplies the power supply voltage to the control circuit (32), and a current limiting resistor circuit (80) with a variable resistance value, placed between the main circuit (30) and the power supply (50). The power supply (50) comprises a second capacitor (51), an overcharge suppression circuit (54), a power supply circuit (56), and a control unit (500). The control unit (500) includes an overcharge suppression control circuit (53) that controls an overcharge suppression circuit (54) according to the magnitude of the voltage of the second capacitor (51), a current limiting resistor switching circuit (83) that switches the resistance value of the current limiting resistor circuit (80) according to the magnitude of the voltage of the first capacitor (15), and a short-circuit fault detection circuit (200) that detects a short-circuit fault in at least one switch of the current limiting resistor circuit (80) based on the duty cycle of the switching signal and the magnitude of the DC voltage of the first capacitor (15).

The application discloses a mineral material self-turning vehicle unloading operation process control system based on posture adjustment, relates to the technical field of unloading operation process control, and aims to solve the technical problem that in the prior art, a vehicle cannot be quickly identified as being accurately positioned, leading to unloading errors or repeated operations due to position deviation. Specifically, through multi-unit cooperative control, from vehicle approach position identification, safety verification to posture detection and early warning, a complete unloading operation closed-loop management is formed, the accuracy, safety and efficiency of the mineral material self-turning vehicle unloading operation are significantly improved, material loss and environmental risks are reduced, process optimization is realized through intelligent posture adjustment, and on the whole, the system improves the automation level and economy of the mineral material unloading operation, and is suitable for large-scale and high-intensity mineral material transportation scenes.

The invention relates to the technical field of flywheel energy storage systems, in particular to a consistency control method and system for a distributed flywheel energy storage system, and the method comprises the following steps: based on the flywheel energy storage system, analyzing the power and change trend of an energy storage unit, discriminating a load signal, comparing the power and rotating speed of multiple units in real time, triggering synchronous adjustment, and compensating output difference. And finally, optimizing the response consistency to obtain a consistency adjustment reference. According to the invention, through dynamic comparison of power difference and rotation speed change, multi-unit operation states are brought into an overall determination view angle, dynamic synchronization of energy distribution and output targets is realized, and after units with low energy utilization are screened, target correction is automatically completed, so that the adjustment action is finer, and output current and rotation speed parameters are linked; a self-adaptive compensation mechanism is formed for power output offset, a dynamic cooperation relation of units in a global situation is formed, and after an adjustment action is finished, a self-adjustment and discrimination mechanism is improved through comparison of a response rate and a state.

This invention discloses a megawatt-level gear-driven unloading and shifting staged start-stop transmission system, comprising a gear-driven current-sharing mechanism, a staged start-stop control unit, and at least two independent electric transmission units. Each electric transmission unit has uniform specifications and can independently complete unloading, shifting, and power on / off. This invention, through single-unit unloading and shifting and multi-unit staged start-stop coordinated control, can lock the operating motor within its rated high-efficiency range, achieving high-efficiency operation under all operating conditions and redundant, fault-tolerant, uninterrupted operation without the need for a high-voltage variable frequency speed control system, adapting to various megawatt-level power generation and drive scenarios.

The invention discloses a solid insulation medium-voltage ring main unit suitable for multi-unit integrated combination and a using method thereof. The solid insulation medium-voltage ring main unit comprises a frame shell assembly, a cavity separation assembly, a unit adjusting and mounting assembly, a thread pressing assembly and a bus adjusting and mounting assembly. The cavity separation assembly divides the interior of the frame shell assembly into a bus installation cavity and a plurality of unit module installation cavities, functional unit modules are installed in the unit module installation cavities through unit adjusting installation assemblies, and the threaded pressing assembly is used for abutting against and fixing the functional unit modules. According to the invention, flexible position adjustment of the functional unit module is realized through the unit adjustment and installation assembly, the installation and fixation reliability is improved by means of the thread pressing assembly, and the bus adjustment and installation assembly is adapted to busbars of different specifications. The problems that an existing ring main unit is poor in multi-unit integration and combination flexibility and insufficient in installation adaptability are solved.

This invention relates to the field of underwater vehicle technology and discloses an underwater vehicle capable of anchoring and escaping from entrapment, comprising: a fuselage shell; a water pumping device fixedly installed inside the fuselage shell; a foldable leg-type anchoring structure disposed around the bottom of the fuselage shell; a water film lubrication anchoring and escaping structure disposed at the bottom of the foldable leg-type anchoring structure; and a control system fixedly installed inside the fuselage shell and located on top of the water pumping device. This invention simplifies the structure significantly by eliminating the need for independent propulsion units and front and rear anchoring devices, replacing multiple unit combinations with a single leg; after the support leg is deployed, a hollow motor directly drives a auger drill bit to screw into the sediment, and the threaded structure directly engages with the soil to form anchoring force, eliminating the intermediate propulsion stage and resulting in faster anchoring response.