弱電橋架各種彎頭配件一般都是在廠家預(yù)訂好的，在現(xiàn)場做的缺點(diǎn)一是不美觀，二是不耐用（特別是噴涂及熱浸鋅處理的），三是費(fèi)工時(shí)，特別是有的項(xiàng)目監(jiān)理是不允許在現(xiàn)場加工的，所以通常是用戶提前按施工圖紙出好清單，由廠家訂制好后再直接進(jìn)行安裝。

　　The various elbow accessories for weak current cable trays are usually pre ordered by the manufacturer. The disadvantages of doing them on site are: first, they are not aesthetically pleasing; second, they are not durable (especially those treated with spraying and hot-dip galvanizing); third, they are labor-intensive, especially since some project supervisors do not allow on-site processing. Therefore, users usually make a list in advance according to the construction drawings, and the manufacturer customizes them before installing them directly.

　　電纜橋架安裝過程中，用到的彎頭一般有三種：一種是水平彎，一是垂直上下彎，還有一種是"之"字彎。以下舉例說明這些彎頭制作方法及公式：例：400×150的橋架做45°"之"字彎從橋架側(cè)面取15cm×0.8在橋架底部畫點(diǎn)將這段距離等分,然后三個(gè)點(diǎn)連接就成一個(gè)45°的等腰三角形(另一邊用同一方法)，然后將這個(gè)三角切掉就形成一個(gè)45°彎，然后再用要做的高度×1.41為里邊的頂點(diǎn)再畫三角形，方向與前面那個(gè)相反，做出來就是一個(gè)45°之字彎。90°彎是取要做的那一面的2倍畫三角，例如400×150做水平彎頭,則取400×2畫三角切掉就行了，如果要做垂直彎頭則取150×2。

　　During the installation of cable trays, there are generally three types of bends used: horizontal bends, vertical up and down bends, and zigzag bends. Here are some examples to illustrate the methods and formulas for making these elbows: For example, a 400 × 150 bridge frame is made into a 45 ° "Z" - shaped bend. Take 15cm × 0.8 from the side of the bridge frame and draw an equal distance at the bottom of the bridge frame. Then connect the three points to form a 45 ° isosceles triangle (use the same method on the other side). Cut off this triangle to form a 45 ° bend, and then use the height of 1.41 to be made as the innermost vertex to draw a triangle. The direction is opposite to the previous one, and the result is a 45 ° - shaped bend. A 90 ° bend is to draw a triangle twice the size of the side to be made. For example, if you want to make a horizontal bend of 400 × 150, you can cut off the triangle by taking 400 × 2. If you want to make a vertical bend, you can take 150 × 2.

　　總結(jié)出來的公式：比如45度的坡度彎頭，你只要記住這句話就知道怎么做了"爬坡45度，橋架高度乘以0.8中分劃三條線為一個(gè)彎，斜邊是爬坡高度乘以1.41，30度是橋架高度乘以0.8除以45乘以30中分劃三條線為一個(gè)彎，斜邊是爬坡高度乘以2水平90度彎是橋架寬度乘以0.8中分劃線，斜邊(內(nèi)邊)600以上200乘以1.41 600以下100乘以1.41"。

　　The formula summarized is: For example, for a 45 degree slope bend, as long as you remember this sentence, you will know how to do it: "Climbing a slope of 45 degrees, multiplying the height of the bridge by 0.8, dividing three lines into one bend, the sloping edge is the height of the slope multiplied by 1.41, 30 degrees is the height of the bridge multiplied by 0.8 divided by 45 multiplied by 30, dividing three lines into one bend, sloping edge is the height of the slope multiplied by 2, horizontal 90 degree bend is the width of the bridge multiplied by 0.8, sloping edge (inner edge) above 600 multiplied by 200 multiplied by 1.41, and below 600 multiplied by 100 multiplied by 1.41".

　　制作方法及步驟：

　　Production method and steps:

　　本圖的角α值同"一"中角α值；本圖的b值與"一"中的b值不同，為層間距值。1、制作層彎頭：層兩個(gè)彎頭的做法同"一"中彎頭的做法，兩個(gè)彎頭間距a值由現(xiàn)場確定，但需滿足電纜彎曲半徑的要求。2、制作第二層彎頭：（1）計(jì)算第二層橋架個(gè)彎頭的定位尺寸e：量出層橋架定位尺寸d值，則e=d+btg1/2α式中：b為層間距，角α值同"一"中角α值（2）依照"一"的方法制作第二層彎頭的第1個(gè)切口α；（3）計(jì)算兩個(gè)彎頭間距c值：c=2btg1/2α式中：b為層間距，a為層橋架兩個(gè)彎頭的間距（4）依照"一"的方法制作第二層彎頭的第2個(gè)切口α；（5）計(jì)算補(bǔ)償尺寸h：h=2 btg1/2α3、制作第三層彎頭：制作方法同第二層彎頭f=e+btg1/2α，g=2btg1/2α+c注：多列等間距等寬橋架任意角彎頭的制作方法與多層等間距等高橋架任意角彎頭的制作方法相同。三、多層"之"形彎頭的作法：與"二"類似，只是a、c、g值相等，所切的兩個(gè)α角在橋架的兩邊。現(xiàn)場做一個(gè)上坡彎頭！圖文并茂，通俗易懂！

　　The angle alpha value in this figure is the same as the angle alpha value in "one"; The b value in this figure is different from the b value in "one" and represents the interlayer spacing value. 1. Making the first layer of elbows: The method for making the two elbows on the first layer is the same as that of the elbow in "One". The distance a between the two elbows is determined on site, but it must meet the requirements of the cable bending radius. 2. Making the second layer elbow: (1) Calculate the positioning dimension e of the first elbow of the second layer bridge: First, measure the positioning dimension d of the first layer bridge, then e=d+btg1/2 α. In the formula: b is the interlayer spacing, and the angle α value is the same as the angle α value in "one". (2) Make the first cut α of the second layer elbow according to the method of "one". (3) Calculate the distance c between the two elbows: c=2btg1/2 α. In the formula: b is the interlayer spacing, and a is the distance between the two elbows of the first layer bridge. (4) Make the second cut α of the second layer elbow according to the method of "one". (5) Calculate the compensation dimension h: h=2 btg1/2. α 3. Manufacturing the third layer elbow: The manufacturing method is the same as that of the second layer elbow f=e+btg1/2 α, g=2btg1/2 α+c. Note: The manufacturing method of any angle elbow for multi column equidistant and equal width bridge is the same as that of any angle elbow for multi-layer equidistant and equal height bridge. 3、 The method of using multi-layer "zhi" - shaped elbows is similar to "two", except that the values of a, c, and g are equal, and the two α angles cut are on both sides of the bridge. Make an uphill bend on site! Illustrated and easy to understand!

　　在前期施工中，特別是弱電方面，做橋架是經(jīng)常的事情！線槽橋架應(yīng)用的場所：地下室。工廠。。地鐵。等等地方需要做線槽橋架！！橋架彎頭的制作就成為一門技術(shù)活。

　　In the early stage of construction, especially in the weak current aspect, it is common to make cable trays! The application location of cable tray: basement. factory market. The subway. Wait, the place needs to make cable trays and bridges!! The production of bridge bends has become a technical activity.

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