Torque strengthening device for land surfboard adapters

A torque strengthening device for land surfboard adapters, comprising an upper connecting plate (11) and a lower connecting plate (21), wherein a number of tension springs (31) arranged obliquely and distributed circumferentially are connected between the upper connecting plate (11) and the lower connecting plate (21), wherein the upper connecting plate (11) and the lower connecting plate (21) are provided with the same number of evenly arranged spring connecting blocks (41) on the side facing the tension springs (31);

• the number of the tension springs (31) is twice the number of the spring connecting blocks (41) on the upper connecting plate (11), and each of the spring connecting blocks (41) is provided with two spring connecting holes (51);
• the spring connecting blocks (41) of the upper connecting plate (11) and the spring connecting blocks (41) on the lower connecting plate (21) are alternately arranged;
• one end of each of the tension springs (31) corresponds to the spring connecting block (41) connected to the upper connecting plate (11), and the other end thereof corresponds to the spring connecting block (41) connected to the lower connecting plate (21);
• a number of positioning pins (81) are both provided on the side of the upper connecting plate (11) and the lower connecting plate (21) away from the tension spring (31);
• a number of screw fixing holes (61) are both provided on the upper connecting plate (11) and the lower connecting plate (21).