Self-contained vacuum source negative pressure adsorption module

Abstract

The invention relates to a self-contained vacuum source negative pressure adsorption module. Three vacuum chucks are connected together through the module, and a self-contained vacuum pump of the module simultaneously vacuumizes to form negative pressure. The module mainly comprises the vacuum chucks, a one-way valve, the vacuum pump, a main bracket, a vacuum pressure sensor, a two-position two-way vacuum solenoid valve, a connecting frame, an air pipe, and the like. The two-position two-way vacuum solenoid valve controls the communication between inner cavities of the three vacuum chucks and the atmosphere; during non-communication, the vacuum chucks and the adsorbed surface form a sealed cavity, and the vacuum pump works to make the negative pressure formed in the cavity so as to generate the adsorption function; and during communication, the negative pressure of the vacuum chucks is relieved so as to separate the module from the adsorbed surface. The module has the advantages of simple structure, self-contained property, independent completion, and convenient connection with other modules or components, and can be used as an adsorption foot of a wall climbing robot or an end executor of a manipulation arm.

Description

technical field [0001] The invention relates to the technical field of robots, in particular to a negative pressure adsorption module with its own vacuum source used in wall-climbing robots and in the industry. Background technique [0002] As a technology that relies on atmospheric pressure to achieve grasping or fixing, negative pressure adsorption has the advantages of no pollution, low cost, convenient use, easy maintenance, and good adaptability to the environment, so it is widely used in the industry. According to the method of forming the pressure difference, negative pressure adsorption can generally be divided into vacuum adsorption, airflow negative pressure adsorption and extrusion exhaust adsorption. Airflow negative pressure adsorption is based on the Venturi principle to generate suction effect, so it needs to continuously deliver compressed air to the negative pressure adsorption device, which is inconvenient to move, noisy, and low in efficiency, so it is wid...

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Problems solved by technology

Both of the above adopt a single suction cup mechanism, and the suction cup will inevitably undergo a large twist and deformation after a heavy load, which will cause the load to tilt significantly and one side of the suction cup to tilt, greatly increasing the possibility of failure and reducing the adsorption reliability and safety

Therefore, when this kind of negative pressure adsorption device is used in a wall-climbing robot, it will inevitably bring more stringent requirements to the control of the robot, and the robot can only perform some simple detection tasks. Conventional-sized wall-climbing robots in the field are helpless

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