Bridge installation 1.
This system is the focus of the parking management system, because it involves a wide construction interface, difficult construction and large construction quantities, so we newcomers can learn from it.
For vibration places, spring rings shall be installed at the connection of the grounding part.
When the tray is at right angles, the minimum bending radius shall not be less than 10 times the outer diameter of the coarsest cable in the slot; 9.
Construction process 2.
Check whether the circuit is unblocked, use a multimeter and measure with resistance method.
The minimum thickness of the tray is recommended to be 1.5mm; 4.
The bridge shall be firmly connected, the interface shall be straight and tight, and the bridge components shall be complete, flat, free of warping angle and no damage to the outer layer.
2.2 installation method of entrance information guide screen ， site picture 4-3 ， site picture 4-4 ， 800mm * 400mm * 500mm foundation shall be built for installation, and the height from the foundation to the ground shall be 100mm..
Refer to site picture 4-1 and site picture 4-2.
1.6.
The bridge installation must be horizontal and vertical; 3.
The bridge shall be grounded, and there shall be connecting wire or jumper at the joint.
as Φ 20/ Φ 25/ Φ 32, etc.
Setting of bridge support points in non-linear sections: when the bending radius of the bridge is not greater than 300mm, a hanger shall be set in the straight section 300-600mm away from the junction of the bending section and the straight section; When the bending radius is greater than 300mm, a hanger shall also be set in the middle of the bend; 6.
Angle steel and steel trunking ceiling are used for installation.
The installation height of the steel trunking is generally 2.5m to 2.8m.
6.
Fix and install the support and bracket with iron expansion bolts, and the support surface of the support and bracket of the straight section is on the same horizontal plane; 4.
The elbow and length of the bridge must be designed according to the drawing direction and on-site, 100mm * 50mm is recommended (width * height); 2.
The support shall not be installed at the position with large vibration, heat source, corrosive droplets and sewage channels, nor on the process equipment, pipelines and movable structures with high temperature, high pressure, corrosive, flammable and explosive media; 2.
Check whether the inter line insulation and ground insulation of the line meet the standard; 3.
1.6.
4 support grounding 1.
The suspender is fixed with through wire and expansion bolt; 5.
In general, we recommend using Φ 20 galvanized iron pipe.
The bridge system shall have reliable electrical connection and grounding; 2.
The steel trunking needs rust prevention treatment.
When another grounding main line is laid along the whole length of the bridge, Each paragraph (including non-linear section) at least one point of the bridge shall be reliably connected with the grounding main line; 4.
1.3 threading.
There shall be no joints between communication wires and network cables; 3.
1.2 requirements for trunking generally, We suggest to use 100mm * 50mm (width * height) steel trunking with power lines, network lines, control lines and optical fibers placed inside.
Electricity At least two ends of the cable tray must be provided with grounding protection, and there shall be connecting wires or jumper wires at the joints; 7.
The corner bend of the bridge must have sufficient radian to prevent the cable from being disassembled; 6.
Support installation 1.
When the bridge system is allowed to form the grounding trunk circuit, the connection resistance between the ends of the bridge shall not be greater than 10 ohms, and the insulating coating shall be removed from the grounding hole; 3.
3.
1.5 contents and methods of line calibration 1 Check whether the line is unblocked; 2.
Chapter II: specific installation method 2.1 installation mode and working state of the parking space integrated machine ， site picture 4-1 ， site picture 4-2 When the parking space all-in-one machine detects that there are vehicles in the parking space, it displays a red light, and when there are no vehicles in the parking space, it displays a green light.
The size of the tube can be selected according to the number of threading.
All wires must be laid in place and reserved with sufficient length (1.5m-2.0m); 4.
1.4 technical requirements for threading 1.
The installation position of the bridge shall comply with the provisions of the construction drawing, and the left-right deviation shall not exceed 50mm, the horizontal deviation shall not exceed 2mm, and the vertical deviation shall not exceed 3mm; 8.
Today, we share a construction scheme for parking space guidance and reverse vehicle search.
All routing lines must be clearly identified, marked in Chinese and ensure continuity; 5.
When there is strong electromagnetic field interference near the line, the line pipe must use metal pipe and be buried underground.
Chapter I construction specifications and processes 1.1 classification of pipes there are two kinds of wire pipes: PVC and galvanized iron pipes.
One shall be opened in the steel trunking Φ 30 hole.
The installation position of the camera shall ensure that the camera is in the middle of the covered parking space and the lens faces the parking space.
1.6 bridge construction process 1.
All wires shall be threaded through conduit and remember not to lay bare wires; 2.
The spacing between supports should be: generally 1.5-3m; 3.
When the linear length of the bridge exceeds 50m, thermal expansion compensation measures shall be taken, and 20-30mm expansion joints shall be reserved; 10.
Network lines (stpcat-5e), power lines (rvv3 * 1.5; rvv2 * 1.5), 485 control lines (rvvsp2 * 1.0) and parking space indicator lights are arranged in the steel trunking (separated) control wire (rvvp4 * 0.5) and optical fiber.
The supports of the bridge shall be arranged orderly and evenly along the bridge direction, and the supports and hangers of the bridge shall be consistent in a certain section; 7.
When overhead laying is necessary, anti-interference measures shall be taken.
Take Haikang’s parking space guidance system as an example.
The distance between the bridge and the top plate or other obstacles shall not be less than 0.3m; 5.
When communication lines and power lines are laid in parallel or cross, the spacing shall not be less than 0.3m.
Round steel hanger type is adopted, and ∮ 10 suspender is adopted.
The stress of the supporting point must be accurately calculated according to the size of the bridge; it is required to be uniform, neat, beautiful, firm and reliable.
