The front and rear tires of the agricultural truck with broken steel plate center screws are stabilized by skids or bricks, the transmission lever is placed in the neutral position, and the hand brake is completely relaxed. After that, use the casing to hit the U-shaped riding bolt and pull out the card stick, jack up the girders, separate the steel plate from the rear axle, remove the steel plate pin, and take out the steel plate.
Drill a small 12 Inm hole in the plane of the angle steel head with a bench drill, flat on the top of the countersunk head of the center screw of the steel plate, and weld it with electric welding, turn the countersunk heads a few times left and right; on the contrary, if the diameter of the countersunk head is broken and the rear axle is stable When the holes are flat, they are taken out by spot welding (using Pa.
In the center of the resected steel plate, the height of the countersunk head of the screw is 2 to 3, and an old hexagonal nut with a hole diameter larger than the diameter of the countersunk is placed on the top of the countersunk head. The nut is welded to the countersunk head with a large current, and then a corresponding one is found. The plum wrench is turned around the nut and left and right. Be careful not to weld the electrode after the electrode is dissolved.)
The vibration test of the simulated automobile leaf spring shows that the leaf spring using the calcium-based grease continuously breaks for a long time, and the leaf spring using the graphite-based grease is continuously broken for 15 (X) times, and the service life is one time longer. many.
Precautions for the installation of the steel plate 1 spring.
Before resuming, check whether the radius of curvature of each leaf spring is qualified. Do not use the broken long leaf spring segment as a short leaf spring. Because the radius of curvature of each leaf spring is not the same, so as not to fit the leaf springs after assembly. tight.
Remove dirt such as sediment and rust on the leaf spring, and evenly apply a thickness of 0 between the contact faces of each piece. Such as graphite calcium-based grease to reduce the wear between the sheets, to avoid rust in the water.
The length of the leaf spring clamp bolt sleeve should be 1 to 2 larger than the width of the steel plate. There should be a gap between the casing and the upper surface of the steel plate to ensure that each leaf spring can flex freely when deformed. The leaf spring clip bolts should be attached to the inside to prevent the bolt from scratching the tire after the nut is detached.
There shall be no more than 1 gap between the bolts and the holes of the leaf spring to ensure that the blades do not move. After assembly, the leaf springs should be attached to each other, and the length of the gap should not exceed 1/4 of the length of the adjacent two pieces.
The nut of the U-bolt should be evenly tightened to the specified torque under full load.
When tightening, first tighten the front U-bolt nut (in the direction of the locomotive), and then tighten the u-bolt nut. The length of the bolt exposed nut should be 10-20n.
The installed leaf springs should also be examined for crowning. In the case of no load, the two steel leaf springs on the same shaft should have a poor degree of arching. The front steel plate must not exceed 10 m dumb, and the rear steel plate must not exceed 2 punctuation. Otherwise, Causes the vehicle to tilt, causing difficulty in maneuvering.
In the installation of leaf springs or maintenance, graphite calcium-based grease should be added between the sheets, and the sheets should be completely adhered to prevent the sand particles from entering.
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Lemandou Chemicals Co., Ltd. , http://www.hbfertilizers.com