Firstly, let’s address the upward and downward bends. For a 30-degree edge, multiply by 0.5; for a 45-degree edge, multiply by 0.8; for a 60-degree edge, multiply by 1. These three lines are now established, ready for the first bend. For a 30-degree slope, the height to climb is multiplied by 2; for a 45-degree angle, multiply by 1.414; for a 60-degree angle, multiply by…
A formula derived from this: for instance, for a 45-degree sloped elbow, just remember this phrase: “Climb 45 degrees, multiply the cable tray height by 0.8, divide it by 45, and multiply by 30 to divide into three lines. The hypotenuse is the climbing height multiplied by 2. For a horizontal 90-degree bend, multiply the cable tray width by 0.8 for dividing lines; for edges (internal edges) above 600, multiply by 1.41; for edges below 600, multiply by 1.41.”
Initially, consider its dimensions. What are they? When making an isosceles triangle, there are generally three forms of bends: the first is a flat bend, usually achieved with two 135° folds to create a 90° bend; the second is a horizontal to vertical downward bend and a horizontal to vertical upward bend; the third is a horizontal to vertical downward flat bend (divided into left and right). The second type is best done with transitional bends; the third type is difficult to fabricate on-site and is best custom-made by a manufacturer. If necessary, I can help you design the specific form.
Ah, I can’t recall that formula right away. But the method should be fixed, right? You’re making a 90-degree bend, aren’t you? The length to be cut for the opening should be the cable tray edge height multiplied by 1.414/2. For example, for a 20cm cable tray, it would be 20cm * 0.707 = 14.14cm. You cut a 14.14cm opening, ensuring it’s an isosceles triangle. Cut two to ensure you have a right-angle bend; this makes the calculation simplest. Talking about standard formulas becomes troublesome, with cos22.5° angles and square roots and such.
Multiply the height by two and then add half of the cut.
Making cable tray elbows is actually quite simple! The degree of the bend can be calculated using a formula! For example, the formula for a 30-degree uphill and downhill slope elbow is x=0.536*e. If you don’t know about uphill and downhill slope elbows, take a look at the illustration of the cable tray’s uphill and downhill slopes.
The distance between the three lines of the cable tray = edge height multiplied by the formula! For a 30° slope, multiply by 0.545°, multiply by 0.860°, multiply by 190°, and then cut two 45° horizontal bends with the cut surface at the bottom! Cut at the bottom!
The hypotenuse length = climbing height * sin15. The cable tray’s method formula for high bends: for a tray height of 100, cut a 2.7cm opening; for a tray height of 150, cut 4.05cm; for a tray height of 200, cut 5.4cm, then multiply the climbing height by two, and in the drawing process, remember that the edge corresponds to the midpoint, and the midpoint corresponds to the edge.
Mnemonic: For a 45-degree slope, divide the cable tray height by 0.8 and divide into three lines. The hypotenuse is the climbing height multiplied by 1.41. For a 30-degree angle, divide the cable tray height by 0.8, divide by 45, and multiply by 30 to divide into three lines. The hypotenuse is the climbing height multiplied by 2.”
