Tool and method for assembling gear in track traffic gear case

Abstract

The invention discloses a tool and a method for assembling a gear in a track traffic gear case. The tool comprises a seat body, a positioning base and a sliding seat. The method comprises the following steps: a, putting a gear case body on the positioning base of the tool so that the large hole flange end face of the gear case body is laminated with positioning steps of the gear case body; b, after the gear is heated, putting the gear placed in a gear containing groove in the sliding seat; c, pushing the sliding seat to move towards the positioning base and the gear case body, so that the gear is disposed on the positioning base and the end face of the gear is laminated with a gear positioning groove of the positioning base; d, hoisting a car axle above the tool and inserting the car axle in a hub of the gear until the end face of the car axle is laminated with the end face of the base or a positioning cushion block; e, oiling inside the hub of the gear through an oil hole in the gear, stopping oiling after oil overflows at the joint of the end face of the gear and the car axle, and cooling. The assembling speed can be improved, the assembling time can be shortened, the influence of human factors during the assembling process is also reduced, and the assembling precision and stability are improved.

Description

technical field [0001] The invention relates to a gearbox gear assembly tool, and also relates to a rail transit gearbox gear assembly method using the tool. Background technique [0002] In the assembly process of rail transit gearboxes, the assembly of axles and gears is a key process. At present, the assembly of gears and axles in rail transit gearboxes mainly includes shrink fitting, cold pressing, and oil injection and pressing (mainly for tapered shafts). Cold pressing requires a special press, and the cost investment is relatively large, and the process control of cold pressing is difficult, and it is easy to crush the gears or axles. Oil injection pressure assembly (mainly for tapered shafts) requires various equipment such as oil pumps, positioning sleeves, and support blocks, and requires a lot of tooling and equipment. Compared with these two assembly methods, shrink-fit assembly is convenient and fast, requires less tooling and equipment, lower cost, and higher ...

AI Technical Summary

Problems solved by technology

[0007] In the existing assembly method, there are many processes and the process is more complicated, and the gears are lightly put into the gearbox case, the case (with gears) is turned from vertical to horizontal, and the case (with gears) is placed into the positioning tooling. It is obviously affected by human factors, and it takes too long to cause the temperature of the gear to drop too much. The diameter of the hub of the gear shrinks rapidly after being enlarged, which leads to the failure of the axle to be inserted normally. loss

At the same time, after the gear is put into the box from the top of the box, the box (with the gear) needs to be lifted and turned from the vertical position to the horizontal position, which not only increases the assembly time, but may also cause bump damage to the gear and the box

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