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Anonymous users2024-02-08<> bridge support frame is the standard name in the budget quota. Depending on the installation, the name is different. Such as:
1. Horizontal hoisting bracket is generally called hoisting bracket. The installation method is: 2 booms + 1 cross arm.
The boom is perpendicular to the horizontal plane, and the top of the boom is connected with the expansion bolt.
or other fixing pieces are connected and fixed, and the lower end of the boom is connected to the cross arm, and the cross arm is parallel to the bottom surface of the bridge, and the weight of the bridge is transitioned to the support through the cross arm and the boom.
2. The bracket arm is also used as a bracket for horizontal bridges. The bracket arm is also in a horizontal position with the bridge frame, and is bolted to the wall, beam or column, and the bridge frame is connected and fixed with the bracket again.
3. Vertical mounting bracket, this bracket is used for the installation of vertical and vertical bridges, and is generally used in shafts. The bracket is fixed on the shaft wall, and the weight of the bridge is mainly concentrated on the connecting surface of the bridge and the bracket.
Calculation of the support frame:
1. Hoist the bracket, determine the diameter, material and length of the boom and cross arm, and then calculate the weight of a pair of brackets against the corresponding unit weight table. The installation spacing of the horizontal hoisting bracket is generally that the number of brackets can be obtained by knowing the total length of the bridge.
2. The supporting arm support, as above, determines the relevant parameters of the supporting arm assembly, and calculates the single loading volume and installation quantity.
3. Vertical brackets, the number of such brackets occupies a relatively small proportion and is generally not calculated.
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Anonymous users2024-02-07The method and calculation formula of the bridge are as follows:
Degree elbow: hypotenuse = height x bottom edge = height up-and-down cut-out width = side plate height of the trunking x left-right flip cut-out width = bottom plate width x of the trunking x.
For example, if a 200 (bottom) x 100 (side) trunking is to be flipped up 20 cm (height) after meters, we can calculate it as follows: (hypotenuse 28 = 20 x bottom edge 20 = 20 upside and up cut width = 200 x.)
Degree elbow: hypotenuse = height x 2 bottom edge = height x up-down cut-out width = side plate height of trunking x left-right turn-out cutout width = bottom plate width of trunking x.
For example, if a 200 (bottom) x 100 (side) trunking needs to be turned to the left 20 cm (height) after meters, we can calculate it as follows: hypotenuse 40 = 20 x 2 bottom edge 34 = 20 x left and right flip cut width = 100 x.
Calculation formula for cable trays.
1. The load g calculation formula of the cable tray: g-n1*g1+n2*g2+n3*g3+..where:
n1、n2、n3...is the number of corresponding cables; gl、g2、g3...It is the weight per unit length of each cable (kg m).
The calculated value of g should be less than the allowable uniform load of the tray (refer to the load curve diagram of each tray), and when the cable tray is installed outdoors, it should also be included in the wind and snow load.
2. Calculation formula for cable tray width b: for power cables: b = n * (d1 + k1) + n2 * (d2 + k2) + n3 * (d3 + k3) + where:
n、n2、n3..is the number of corresponding cables; d1、d2、d3。for the outer diameter of each cable; k、k2、k3...
is the corresponding cable net spacing (K U003E 4).
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Anonymous users2024-02-06The calculation formula is as follows:
The width of the cable tray is designed for power cables and control cables, and the calculation formula is different:
The above formula can be used for power cables, and this formula can be used for control cables: b=s h=s0 40% (s=s0 40%)
where s0 = n1 * s1 + n2 * s2 + n3 * s3 + .
n1,n2,n3...is the number of corresponding cables; s1，s2,s3...is the cross-sectional area of each cable (calculated according to the outer diameter of the cable):
S --- cross-sectional area of the bridge space.
h--- The formula of your calculation method for the net height of the tray space is correct, that is, the calculation method of the cable diameter is wrong, and the calculation should be more accurate in this way.
The square of the wire radius (mm) and the number of strands.
Such as 48 strands (each strand of wire radius in mm) square wire:
48 = squared.
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Anonymous users2024-02-051. The load g calculation formula of the cable tray:
g=n1*g1+n2*g2+n3*g3+..
where: n1, n2, n3....is the number of corresponding cables;
g1、g2、g3...It is the weight per unit length of each cable (kg m).
The calculated value of g should be less than the allowable uniform load of the tray (zd refers to the load curve diagram of each tray), and when the cable tray is installed outdoors, the wind and snow load should also be included.
2. Calculation formula for cable tray width b: back.
For power cables:
b=n1*（d1+k1）+n2*（d2+k2）+n3*（d3+k3）+.
where: n1, n2, n3....is the number of corresponding cables;
d1、d2、d3...is the outer diameter of each answering cable;
k1、k2、k3...is the corresponding cable net spacing (k>d 4).
3. For control cables:
b=s h=s0 40%h (s=s0 40%), where: s0=n1*s1+n2*s2+n3*s3+.n1、n2、n3...is the number of corresponding cables;
s1、s2、s3...is the cross-sectional area of each cable (calculated according to the outer diameter of the cable):
S --- cross-sectional area of the bridge space.
h--- clear height of the bridge space.
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Anonymous users2024-02-04The bridge is generally 2 meters, or meters, 3 meters, 6 meters can also be customized Shanghai Junhao Electromechanical ****.
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Anonymous users2024-02-03The calculation method of the bridge support frame is as follows:
1. Calculation method of bridge hoisting support frame: determine the diameter, material and length of the boom and cross arm, and then calculate the weight of a pair of supports against the corresponding unit weight table. The installation spacing of the horizontal hoisting bracket is generally 1.5 to 2 meters, and the number of brackets can be obtained according to the total length of the bridge.
2. Calculation method of bridge bracket support frame: determine the diameter, material and length of the boom and cross arm, and then calculate the weight of a pair of brackets against the corresponding unit weight table. The installation spacing of the horizontal hoisting bracket is generally 1.5 to 2 meters, and the number of brackets can be obtained according to the total length of the bridge.
3. Calculation method of the vertical support frame of the bridge: the relative proportion of the tolerance of several mu of this support is very small, and it is generally not calculated.
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