$fn = 200;

translate([0,-4.5,0])union(){
difference(){
    union(){
        translate([0,1.5,0])cube([22,6,3]);
        cube([22,9,1.3]);
    }
    translate([6,1.5,0])cube([9,2.5,3]);
    translate([14,0,0])cube([1,1.5,3]);
}
translate([10,0,0])cube([4,2,6]);
translate([22,0,0])cube([15,9,6]);
translate([15,1.5,3])rotate([0,67,0])cube([3,6,7.7]);
}

translate([0,-(8.5/2),0])union(){
difference(){
    translate([37+12.5,(8.5/2),0])cylinder(r=16.5, h=10);
    translate([37+12.5,(8.5/2),0])cylinder(r=12.5, h=10);
    translate([37+12.5,-15,0])cube([30,50,20]);
}
difference(){
    translate([37+12.5,-23.25,0])cube([3.5,15,10]);
    translate([37+12.5,-17,5])rotate([0,90,0])cylinder(d=3,h=8);
}
difference(){
    translate([37+12.5,16.75,0])cube([3.5,15,10]);
    translate([37+12.5,26,5])rotate([0,90,0])cylinder(d=3,h=8);
}
}