Special manual type physical education table tennis ball picking machine

Abstract

The invention discloses a special manual type physical education table tennis ball picking machine which comprises an air exhaust barrel, a connecting pipe, a ball sucking cover and a handle. The connecting pipe is communicated and connected with a side end of the air exhaust barrel, the ball sucking cover which is matched with table tennis balls is communicated and connected with the other side end of the connecting pipe, a first check valve is arranged in the connecting pipe, an air outlet hole is formed in the bottom of a side wall of the air exhaust barrel, a second check valve is arrangedin the air outlet hole, a piston plate and a cam are arranged in an inner cavity of the air exhaust barrel, a return spring is fixedly connected with the side end, which is far away from the cam, ofthe piston plate, and the other end of the return spring is fixedly connected onto the bottom wall of the air exhaust barrel. The special manual type physical education table tennis ball picking machine has the advantages that the ball sucking cover covers the table tennis balls, the cam can rotate by the aid of a hand grip and is matched with the return spring, the piston plate can be pushed backand forth, accordingly, negative pressures can be generated in the connecting pipe, and the table tennis balls can be squeezed by the aid of the external atmospheric pressures and can be constrainedin the ball sucking cover; the special manual type physical education table tennis ball picking machine is simple in structure and is practical and convenient, users can pick the balls by the aid of the special manual type physical education table tennis ball picking machine when standing, and accordingly leg and foot numbness due to long-time squatting can be prevented.

Description

technical field [0001] The invention relates to the field of physical education teaching appliances, in particular to a manual table tennis ball picker specially used for physical education teaching. Background technique [0002] Table tennis, China's national ball game, is a popular ball game in the world, including attack, confrontation and defense. Match divides group, singles, doubles etc. several; With 11 points into one innings, adopts five innings to win three, seven innings to four victory. Table tennis is spherical shape, 2.53-2.70 grams in weight, white or orange, is made of celluloid or plastics. [0003] Table tennis originates from Britain, and " table tennis " one originates from 1900, is gained the name because sending the sound of " Ping Pong " when it hits, uses " table tennis " as its official name in Mainland China, Hong Kong and Macao etc. The same applies to regions. In 1926, the International Table Tennis Invitational Tournament was held in Berlin, G...

AI Technical Summary

Problems solved by technology

[0004] In the process of learning table tennis, a large number of table tennis balls will fall to the ground. Due to the small size of table tennis balls, the labor load of teachers or students is large when picking up the balls, and it is time-consuming and laborious, and the efficiency is low. Picking up the ball for a long time will make the picker's back sore and unbearable

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