In order to make the detector work in the best condition, the inductance of the coil should be kept between 100 uh-300 uh. When the inductance of the coil is constant, the number of turns of the coil has an important relationship with the circumference. The smaller the circumference, the more laps. Because there may be various metal substances buried under the road, such as cables and pipes, steel bars, manhole covers and so on. All these will have a great influence on the actual inductance of the coil, so the data in the above table are for users' reference only. In actual construction, as long as the final inductance value of the coil is within a reasonable working range (such as 100 uh-300 uh), users should actually test the inductance value of the inductance coil with an inductance tester to determine the actual number of turns in construction.
When winding the coil, leave enough wires to connect to the loop inductance, and ensure that there is no joint in the middle. After winding the coil cable, the outgoing cable must be twisted tightly, requiring at least 1 meter twisting for 20 times. Otherwise, the untwisted output leads will introduce interference and make the inductance of the coil unstable. The length of the output conductor should generally not exceed 5 meters. Because the sensitivity of detection coil decreases with the increase of lead length, the length of lead cable should be as short as possible.
Vehicle detector
Vehicle detector
First of all, a pavement cutter should be used to cut grooves on the pavement to bury the coiled material. Cut 45 degrees at four corners to prevent sharp corners from damaging the coil cable. The width of the notch is usually 4 to 8 mm and the depth is 30 to 50 mm. At the same time, cut a groove for the coil lead to the side of the road. However, it should be noted that the cutting groove must be clean and free of water or other liquids. When winding the coil, the coil must be straightened, but not too tight and close to the bottom of the slot. After winding the coil, the twisted output lead is led out through the lead-out slot. During the winding process of the coil, the inductance value of the inductance coil should be actually tested by an inductance tester to ensure that the inductance value of the coil is between 100 uh-300 uh. Otherwise, the number of turns of the coil should be adjusted.
Installation and fixation
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Where it is easy to protrude, the brake lever faces outward (intersection), the braking ground and the road surface need to be in the same plane, and the road surface needs concrete ground as the basis for braking.
Install the chassis (see figure 1)
Take out the accessories attached to the box.
Put the box in a certain position, open the door of the box, mark the hole in the bottom plate of the box with a marker pen or screwdriver, and then take out the box.
Use an impact drill to drill an expansion screw at the No.7 exit with a hole depth of 70-80mm, put in the expansion screw, adjust the level and verticality of the box, and tighten the nut.
Install the brake lever (see Figure 2)
Open the door of the box, turn the motor, and clamp the brake lever in the box to a horizontal position.
Put the end of the brake lever with threaded hole into the brake lever slot in the box horizontally, install the outer brake lever clamp and flat washer, and tighten the nut.
Adjust the brake lever bracket so that the brake lever is in a horizontal position. And make the brake lever bracket just contact with the brake lever.
The installation method of the brake lever bracket is the same as that of the box.
Tension spring adjustment
Turn on the power supply of the road brake, and press the "▲" and "▼" keys of the controller to make the brake lever run 90 degrees up and down for 4 ~ 5 times. If the lever wobbles when descending, it means that the tension of the hairspring is not enough, and then the brake lever is operated to a vertical state.
Disconnect the power supply, turn on the box machine, loosen the screw of the box cover and take off the box cover.
Use a hex wrench to adjust each tension spring screw. (See Figure 3) Make the brake lever achieve the best effect during operation.
If the lever shakes during lifting, it means that the tension of the hairspring is too high, and repeat the above operation (loosen the spring screw to make the brake lever achieve the best effect during operation. )
If the motor is running and the brake lever does not move when the brake lever is lifted, it means that the tension of the balance tension spring is insufficient. Adjust the state of tension spring or add tension spring until the brake lever works normally.
The configuration of a single spring is as follows:
The brake lever is 6m long with two tension springs, the gear lever is 4m-5m long with two tension springs, and the brake lever is less than 4m long with one tension spring.
When adjusting, the number of revolutions of each nut is the same, so as to avoid uneven stress.
Limit adjustment
The balance state of the brake lever has been adjusted before leaving the factory, reaching the balance range. If the brake lever is not vertical or horizontal during field installation, fine adjustment is required, as follows:
Open the door;
Loosen the crosshead screw of the limit baffle with a Phillips screwdriver, gently rotate the limit baffle to adjust the brake lever to a horizontal position, and tighten the screw after adjustment;
When the brake lever is not in place, the limit baffle is fine-tuned in the opposite direction, and when it exceeds the horizontal position, it is fine-tuned in the opposite direction;
When the verticality of the brake lever cannot be reached after lifting the lever, fine-tune the fragrance baffle clockwise to the required position;
Lock the door.
Fault maintenance
General simple brake failure can be solved in the following three ways. If your brake has the following three kinds of faults, it is recommended to ask a professional to repair it.
Non-landing stick
Elimination method: measure whether the voltage is within the range of 220 V 10 V;
Not in place, too much jitter
Detection reason: Check whether the magnet of the running switch is adjusted correctly and whether the tension of the hairspring is too loose or too tight. Troubleshooting: adjust the position of stroke control and tighten the bolt of tension spring connecting rod;
Abnormal noise in the cabinet
Detection reason: Check whether the bearing and movable connecting rod are abnormal. Troubleshooting: Add lubricating oil or replace bearings.
Common faults and their maintenance methods are mainly as follows:
Loose buried wire of the brake coil: When the ground induction coil cannot be firmly fixed in the nest, the vibration of the car passing through the road will deform the coil in the nest and change the initial inductance of the ground induction. At this time, the sensor must be reset before it can work normally. The solution is to pour melted asphalt into it and fix it.
Loose connecting screw of road brake: the connecting screw is connected by positive and negative threads, and the upper and lower bearings are connected by double-headed screws. If the screw is loose, the up and down position will be inaccurate. Insert an iron bar with a length of 80 mm Ф 4 between the studs and turn the brake lever up and down.
Loose bolt of the crank arm of the road brake: If the bolt is loose, the up and down position of the brake lever of the road brake will be inaccurate, and the brake lever will shake greatly when it stops. Just hang up the bolt and lock the nut.
Local control of magnet displacement: Cimin Hall element is used for up-and-down positioning. If the position of the rectangular magnet and the cam disk of the reducer changes, the positioning will be inaccurate. If you can't turn it, the problem will be solved.
Power-off protection switch is powered off: when the control part of the road brake fails, the automatic protection device of the road brake will work automatically. At this time, the brake lever stops at the inclined position, the main power supply is disconnected, and the machine does not work. At this time, open the door of the machine, and rotate the big belt clockwise for 3-8 turns to the upper position to recover. If it can't be restored to its original state after so many times, it is necessary to check whether there is a problem with the Hall element and the circuit board.
Loose adjusting nut of pull-down hook: there is a pull-down hook with the thread of M 10 at the lower part of the cabinet, which is used to pull the spring of the balance mechanism and adjust the zero point of the balance function. It is also equipped with two M 10 hexagon nuts and Ф10 spring washers. If the nut is loose, knocking and imbalance will occur when the machine is running. Although the machine can still run after unbalance, it will greatly increase the load of transmission parts such as reducer and motor, thus affecting the reliability and mechanical life of road brakes.