Multifunctional combined fitness trainer
A technology of multifunctional combination and trainer, applied in gymnastics equipment, sports accessories, etc., can solve the problems of unfavorable small space installation, large floor area, etc., and achieve the effect of increasing diversification, stable structure, and increasing fitness functions
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[0038] A preparation method of a polyurethane wheel, comprising the following steps:
[0039] S1. Inner wheel preparation, mix 30%~45% 1,4-butanediol and 10%~20% EA polyol to make solution A, make 30%~45% isocyanate to make solution B, mix solution A and solution B is mixed and solidified in the model to make the inner wheel;
[0040] S2. Preparation of the outer wheel. Prepare 1 to 5 layers of material units respectively. Press the material units of 1 to 5 layers into one body with a pressure molding machine at a high temperature of 200 to 250 degrees at a pressure of 0.2 to 1 ton, and then cut into outer wheels;
[0041] S3, bearing, inner wheel and outer wheel are assembled into polyurethane wheel.
[0042] The preparation method of the material unit is as follows:
[0043] S1. Dissolving 65%-80% thermoplastic matrix material in a solution of dimethylformamide, and heating in a water bath for 10-15 minutes to form a mixed solution 1;
[0044] S2, laminating 10% to 15% n...
Embodiment 1
[0048] Mix 35% 1,4-butanediol and 20% EA polyol to make solution A, 45% isocyanate to make solution B, mix solution A and solution B and cure in the mold to make inner wheel; prepare materials separately The unit has 2 layers, and the 2-layer material unit is pressed into one with a pressure molding machine at a high temperature of 200 degrees with a pressure of 0.2 tons, and then cut into an outer wheel; the bearing, the inner wheel and the outer wheel are assembled into a polyurethane wheel, Wherein, 80% of the thermoplastic matrix material is dissolved in a solution of dimethylformamide, and heated in a water bath for 10 minutes to form a mixed solution 1; 10% nylon polyester felt and 15% high-tenacity fibers are laminated to form a mixed layer 1; Coat the mixed solution 1 on the outer surface of the mixed layer 1 to form a mixed layer 2; place the mixed layer 2 in a container, heat the container to 70 degrees, and apply air pressure of 1 atmosphere at the same time to remov...
Embodiment 2
[0050] Mix 45% 1,4-butanediol and 20% EA polyol to make solution A, 35% isocyanate to make solution B, mix solution A and solution B and cure in the mold to make inner wheel; prepare materials separately The unit has 3 layers, and the 3-layer material unit is pressed into one with a pressure of 1 ton by a compression molding machine at a high temperature of 250 degrees, and then cut into an outer wheel; the bearing, the inner wheel and the outer wheel are assembled into a polyurethane wheel, Wherein, 65% of the thermoplastic matrix material is dissolved in a solution of dimethylformamide, and heated in a water bath for 15 minutes to form a mixed solution 1; 10% nylon polyester felt and 25% high-tenacity fibers are laminated to form a mixed layer 1; Coat the mixed solution 1 on the outer surface of the mixed layer 1 to form a mixed layer 2; place the mixed layer 2 in a container, heat the container to 80 degrees, and apply an air pressure of 3 atmospheres at the same time to rem...
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