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 Jiangmen gearing up row Ge line flags of the street car rental companies 136 0,000,135,813,823,423,455 Jiangmen street car, street car rental Jiangmen, Jiangmen street car companies, car rental companies, Jiangmen street, street car telescopic rod bore repair a street car Section telescopic arm rod hydraulic cylinder piston rod anchor hole deformed, while the largest amount of wear has reached 3 mm. Fix bore the difficulties are twofold: first, because the longer telescopic cylinders, during stretching exercise, it will affect the housing bore a slight deviation to the piston rod and the vertical arm section, so the seat hole positioning precision is higher ; the second is the original seat orifice large deformation, on the basis of the original quest is very difficult to pinpoint. Now we use the repair method described as follows: first select lever arm undeformed position as a benchmark to measure the position of the original bore, to prevent large errors occur, select the two benchmarks were measured (see Figure 1), and compare the data analysis, the closest data; actual practice is to dig up deformed parts make up the new board, and in its reference position and marked. To ensure that the left and right seat hole concentricity, designed and fabricated with the sleeve bore with a higher precision mandrel. Also designed and fabricated a seat hole sets. According to pre-labeled reference, initially identified in the ribs board seat hole location, and cut out the welded sleeve bore hole, and fix polished. The bore sleeve, sleeve and mandrel rod bore After assembling together into the hole in the rib plate. Based on pre-positioned by the measured parameter marker sets the benchmark to determine the specific location of the housing bore, the first spot welding initial position, after the amendment, continuous welding, to ensure that no pores, slag and sealing off and so on. Installation and commissioning, the results in the first second boom arm inner telescopic freely without hysteresis phenomenon. The use of such casement France successfully repaired over two street cars, multi-platform riveting car arm. Street car to repair a rotary distributor street car after the disintegration of the rotary distributor, found housing five steps of the ring groove wear in varying degrees. In order to save money, decided to repair. First dispenser housing boring all original flat annular projection, the latter set into the whole cylinder; oil to make the original annular cross-sectional area of ??the same channel, ensure that the original flow and pressure of the hydraulic system, to enhance the annular plunger oil passage . Specific process is as follows: use ZM443-duty truck engine cylinder, with its outer dimensions as the base, the dispenser housing ring groove on the stairs boring out. Inlaid into the cylinder as a whole, then fine boring and honing the plunger and the cylinder with the gap of 0.08 mm, thus ensuring the accuracy of the original tie. Integral cylinder changed, the original ring groove on the housing has been eliminated, in order to ensure that the original flow and pressure of the hydraulic system, the piston ring groove should be deepened, to enhance the amount of the original depth of the ring groove on the housing. Drill through the oil passage holes. The rotary distributor assembly debugging test machine, repaired to good effect. Street car hydraulic fan shaft repair a street car Tadano TG400-type hydraulic cooling fan is not working, found that after the disintegration of the hydraulic fan shaft and hub keyways are badly worn. The machine cooling fan as key drivers, unlike the general cooling fan with tape drive, in order to avoid street car stop, decided to use the fan shaft casement, increase the hub bore repair program. As follows: After the fan shaft wear with ordinary electrodes J422) for welding, cooling fan shaft will be turning in the lathe to its original size. Determined according to the actual strength requirements to increase the aperture of the hub, and thus determine the set of the fan outer diameter of the shaft sleeve. According to the fan shaft after repair shaft, determined to increase the hub bore keyway, key size, and processing. In order to prevent the sleeve and the shaft loose, the need to weld the sleeve and the fan shaft. Replaced with copper sleeve bearing a Red Rock brand trailer (front axle to drive axle) front axle due to abnormal sound into the factory overhaul, the disintegration of the front axle axle support bearings, needle roller bearings without inner ring found to fall apart, because no suitable bearing replacement, decided to replace the bearing inlaid copper sleeve, copper sleeve size of 50mm × 30mm × 40mm. Unlike copper sleeve needle roller bearings have a relatively large space to store oil, it axle with a small gap, lubricating oil is difficult to enter into this gap in the formation of the oil film. For proper lubrication, the copper jacket processed two left and right hand to the sump. 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