With The Development Of The Economy, The Demand For Long-Distance Transportation Of Fresh Goods Continues To Increase, And Cold Chain Logistics Is Increasingly Favored By People. Chongqing Refrigerated Trucks Are Playing An Increasingly Important Role In Cold Chain Logistics Due To Their Flexibility And Convenience.
1. Car Structure Design And Optimization
1.1 Design Requirements
With The Development Of The Economy, The Demand For Long-Distance Transportation Of Fresh Goods Continues To Increase, And Cold Chain Logistics Is Increasingly Favored By People. Refrigerated Trucks Are Playing An Increasingly Important Role In Cold Chain Logistics Due To Their Flexibility And Convenience.
1.1 Design Requirements
The Designed
Refrigerated Truck Requires A Rated Load Capacity Of About 1 Ton, And The Chassis Model Adopts Cgc1040hdd33e1. The Four Walls Of The Carriage Are Required To Have Sufficient Strength And Stiffness To Resist Impact Deformation And Have Good Cold And Thermal Insulation Functions. Require The Material Density Of The Carriage To Be Low, Light In Weight, And Improve The Utilization Rate Of The Vehicle'S Mass. The Carriage Has Preservation And Refrigeration Functions. The Refrigeration Function Requires A Temperature Of -5 Degrees Celsius Inside The Box, And The Refrigeration Function Requires A Temperature Of -15 Degrees Celsius Inside The Box. The Refrigeration Vehicle Uses A Refrigeration Unit For Refrigeration, Which Requires A Uniform Temperature Distribution Throughout The Entire Compartment During The Refrigeration Process.
1.2 Structural Design And Optimization
To Meet The Above Requirements, The Total Size Of The Car Is 4000mm * 1800mm * 1800mm, And Both The Car Panel And Doors Are Made Of Rigid Polyurethane Sandwich Fiberglass Three-Layer Structure. In Order To Ensure The Self Loading And Unloading Requirements Of Vehicles, Such As Insulation, Durability, Impact Resistance, Vibration Resistance, Etc., The Thickness Of Fiberglass Is 3mm. The Thickness Of The Bracket Is Tentatively Set At 80 Mm (Appropriate Thickness Will Be Discussed In Section 3). The Carriage Is Composed Of Front Panel, Bottom Panel, Side Panel, Door, Evaporator, Air Guide Plate, Microporous Membrane 1, And Microporous Membrane 2.
To Achieve The Assembly Coordination Of The Floor, Roof, Side Panels, And Front Panels Of Chongqing Automobile Factory, A 45 Degree Wavy Slope Is Set At The Edge Of The Panels. In Order To Improve The Overall Strength And Stiffness Of The Carriage, And To Ensure A Tight Bond Between The Layers Of The Carriage, Reinforcement Bars Are Added Between The Frp And Polyurethane Interlayers, Namely The Sides Of The Inner And Outer Frp Panels. To Ensure The Insulation Effect, The Two U-Shaped Thin Plates Should Be Arranged In A Staggered Manner And Set At A Height Of 30mm To Ensure That The Total Height Of The Two Plates Is Less Than The Thickness Of The Polyurethane Layer And To Prevent Contact. Thereby Improving The Thermal Conductivity And Affecting The Insulation Effect.
