A linear motion throttle actuator

Abstract

The invention relates to a straight line movement type accelerator executor. The straight line movement type accelerator executor comprises a base board, a shell body, a direct current motor and a transmission mechanism; an output end of the motor is connected with an input end of the transmission mechanism; the transmission mechanism is composed of a decelerating mechanism and a spiral transmission mechanism, the decelerating mechanism is formed by the match between a worm fixedly connected with the direct current motor and a worm gear component fixedly connected with a transmission screw, the spiral transmission mechanism is formed by the transmission screw and an accelerator push-pull rod which are combined in a spinning mode, a feedback potentiometer is installed on one side of the transmission screw, and a control circuit is installed on the base board. According to the accelerator executor, a control circuit board is integrated, the accelerator executor can be controlled by a CAN communication receiving and dispatching module, and the use cost is lowered. By the adoption of the double closed loop control, the control precision is improved. By the adoption of the worm gear and worm transmission, decelerating is conducted, the size of the structure is smaller, the assembly and maintenance are easier, the shape size of the accelerator executor is smaller, the weight is lighter, and the installation is more convenient.

Description

technical field [0001] The invention relates to a linear motion throttle actuator. Background technique [0002] Throttle actuator is usually the executive mechanism in the engine automatic measurement and control system, which is used to adjust the opening of the engine throttle, realize the speed regulation of the walking vehicle or complete various tests on the engine. [0003] The current common accelerator actuator products in China usually use a DC servo motor as the power, and after being decelerated by a primary or secondary gear pair, it outputs rotational power to pull the throttle zipper. The basic working principle of the accelerator actuator is: according to the current position of the accelerator pedal, the DC servo motor of the accelerator actuator is controlled to start, the accelerator is pulled or released through the accelerator zipper, and the opening of the engine accelerator is changed. At the same time, a closed-loop control is formed through the posit...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned accelerator actuators are usually pure structural parts, or only integrate a simple position feedback circuit, so it is necessary to design or purchase a special drive and control circuit when using it, which increases additional costs

Secondly, the use of gear pair transmission requires high installation accuracy, and the radial dimension of the reduction mechanism is relatively large

At the same time using rotational power to pull the throttle zipper will reduce the service life of the zipper

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