Forklift manufacturers door frame deformation fault maintenance method door frame deformation maintenance method: can use the correction method to eliminate the forklift door frame deformation. When the bending and distortion of forklift door frame is small, it is allowed to use the cold correction method with static load. When the bending and distortion of the forklift door frame is too large and it is not easy to correct by cold pressing, it can be corrected by heating. The heating area should be reduced as far as possible during heating. The heating temperature is generally not more than 700℃, and it should be cooled slowly to avoid increasing brittleness. Forklift truck door frame crack repair method: in the inspection, if the forklift truck door frame crack, should be repaired. Forklift door frame should be corrected before repair, and the inherent straightness of the door frame should be maintained. Burnish the crack, until exposed metal luster, and then carefully check, determine the crack boundary, in the boundary extension 10mm drill ￠5-￠8mm limit hole. In the crack with grinding wheel repair and grinding out the groove groove.
The channel steel on both sides of the forklift frame is connected by 5 beams to form a frame structure. The main support plate at the bottom of the channel steel is hinged on the forklift drive axle, and the inclined cylinder installed on the inclined cylinder support at the bottom of the channel steel is connected to the outer door frame frame together. The expansion of the tilt cylinder can realize the front and rear tilt of the outer door frame. During forklift operation, the inner frame lifts frequently in the outer frame, and the inclined cylinder drives the outer frame to tilt back and forth. The structure and arrangement of channel steel, beam, inclined cylinder support and main support plate directly affect the distribution of stress and displacement and service life. According to the structural analysis of the forklift truck, when the door frame rises to a high place and leans forward to a large Angle, the external door frame is subjected to great stress, so we select this working condition for simulation loading calculation.
The steps of the main reducer assembly of the car cylinder loader are as follows: First, remove the connecting bolts between the main reducer assembly and the drive axle housing, and loosen them with the drive axle housing; Secondly, push the disassembly trolley into the chassis and raise the bracket, align the long hole of the drawplate with the flange hole of the main reducer assembly, and connect the drawplate with the flange together with bolts; Again, loosen the stop screw, adjust the pole position, rotate the top rod to hold the main reducer assembly; Then, pull the trolley backwards, so that the main reducer assembly slowly away from the drive axle; Then, pull cylinder pull rod to reduce the main reducer assembly height; Drive the disassembly trolley away from the drive axle and transport the main reducer assembly to the designated location.
In order to find a solution to the problem, I have been paying attention to the observation in my ordinary homework. Through the comparison with similar forklifts in the same working condition, it is found that there is a gap of 13CM between the backseat of fork teeth and the door frame of the forklift. When the fork teeth are stressed, they may act directly on the bearing of the door frame due to the failure of stress transfer, resulting in bearing rupture.
Imagine on both sides of the fork tooth back seat and the gap between the door frame on the position of each welding an iron seat, so that the gap between the fork tooth back seat and the door frame is reduced to about 5MM. So when the fork teeth at the fork force and affected by the impact, will add some force through welding iron to the door frame, and the door frame is fixed on the wheel and the body, can stand the force, not damage, avoids the impact effect on the bearing directly, indirectly protect door frame bearing, so as to avoid the bearing load and damage. This idea was supported by the technical department, and the mechanical repair workshop of the technical department implemented the transformation.
Post time: Dec-12-2021