Mining explosion-proof type circulating ball electric power steering gear and vehicle

Abstract

The invention provides a mining flame-proof type recirculating ball electric power steering gear and a vehicle adopting the mining flame-proof type recirculating ball electric power steering gear, and the mining flame-proof type recirculating ball electric power steering gear comprises a speed reducer; the mechanical steering gear is in transmission connection with the speed reducer; the integrated motor controller is arranged outside the integrated shell and is further in transmission connection with the speed reducer; the explosion-proof shell is used for covering the motor controller and is further connected to the integrated shell; a steering input shaft of the steering gear penetrates through the explosion-proof cover body, and the explosion-proof cover body is used for covering a sensor arranged on the steering gear and is further connected to the integrated shell; and the explosion-proof shell, the explosion-proof cover body and the integrated shell are matched to form an integral explosion-proof structure of the mining explosion-proof recirculating ball electric power steering gear. The technical scheme has the advantages that the electric power steering gear is simple in structure and convenient to assemble, the electric power steering gear and the electric power steering gear equipped with the electric power steering gear can be used under a mine and a well, and the harsh explosive-proof requirement can be met.

Description

technical field [0001] The invention relates to the technical field of vehicle steering equipment, in particular to a mine explosion-proof circulating ball electric power steering gear and a vehicle. Background technique [0002] At present, the steering gear for vehicles mainly adopts electric power-assisted type, which is divided into three types: column type, rack and pinion type and circulating ball type. The electric power steering is directly powered by the electric motor. The electric power steering system mainly includes a steering wheel torque sensor, a vehicle speed sensor, a controller, a power assist motor and a deceleration mechanism. The basic principle is that the controller accepts the steering wheel torque signal, the vehicle speed signal, and the engine signal, and outputs the control signal to control the motor to output the assist torque according to the pre-determined assist characteristic. The electric power steering system has many advantages such as ...

AI Technical Summary

Problems solved by technology

[0004] First, most of them are only used in cars, and they are all column-type or rack-and-pinion steering gears, which have a narrow scope of application. At present, special vehicles with a front axle of 1.5 tons or more still use hydraulic power steering, which is complicated to install and consumes a lot of energy. , especially pure electric new energy special vehicles;

[0005] Second, most of the sensors used in the existing electric power steering are torque sensors that can only output torque signals, and the system steering is not light and flexible enough to realize unmanned driving and assisted driving;

[0006] 3. The setting of the connection mechanism between the reducer part and the mechanical circulating ball structure is unreasonable, resulting in inconvenient assembly and low product assembly qualification

[0008] Because the structure of the electric power steering gear itself is very complicated, and there are many electrical components, if there is a flaw in the flameproof of each place, it will lead to the failure of the flameproof of the entire steering gear

[0009] As for the formula to be explained, the applicant has provided a structurally improved electric power steering in another patent application (application number: CN202020473762.4). Although this application can well solve the problems in the above-mentioned one to four, For the fourth point, it still cannot be directly used in mines and underground environments

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