Push-pull force testing device of actuator

Abstract

The invention discloses a push-pull force testing device of an actuator. The push-pull force testing device of the actuator is mainly composed of the actuator (1) provided with a push rod and a braking mechanism limiting the movement of the push rod. A push-pull sensor (2) is arranged between the push rod and the braking mechanism, and the braking mechanism is a control assembly provided with a support structure and comprises a brake (3) and a brake pad (4), wherein the brake (3) is fixed on the support structure, and the brake pad is controlled by the brake (3). The brake pad (4) is arranged along the moving direction of the push rod, and two ends of the push-pull force sensor (2) are respectively connected with the push rod and the brake pad (4). The push-pull force testing device is mainly used for a linear stroke actuator, a detecting scheme is provided to aim at the push rod force, a testing principle is simple, a gap of push-pull testing of the actuator in the prior art is filled, and not only is the control precision of the operating position of a valve improved, but also the push-pull force testing device has the advantages of being simple in structure and easy to operate.

Description

technical field [0001] The invention relates to the field of actuator testing, in particular to a device for testing the push-pull force of the actuator. Background technique [0002] The actuator is a driving device that can provide linear or rotary motion, which uses some kind of driving energy (such as: hydraulic oil, gas, electricity or other energy) and works under the action of a control signal. According to the type of output displacement of the actuator, it can be divided into three types: straight stroke, angular stroke and multi-turn type. Taking the straight stroke actuator as an example, in the existing industrial field, it can act on the control valve and pass through the actuator. Output linear displacement to precisely control the position of the valve. As more and more factories adopt automatic control, manual operation is replaced by machinery or automation equipment, people require the actuator to be able to play an interface role between the control syste...

AI Technical Summary

Problems solved by technology

At present, there is no special equipment for testing the push-pull force of linear actuators on the market. Due to the lack of actual push-pull force data, it often causes troubles in valve control. For example: for some high-pressure and large-diameter valves, the required actuator The output push-pull force is very large. At this time, the actuator must improve the mechanical efficiency. If the push-pull force is adjusted too high, there will be excess mechanical efficiency and cause waste; if the push-pull force is adjusted too small, the mechanical efficiency will be low, and it will not be used.

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