Combined cushion block with step-adjustable overall height and combination method

Abstract

The invention relates to a combined cushion block with step-adjustable total height and a combination method, a first lower cushion block (1) and a second lower cushion block (2) are cylindrical in structure and have two specifications, the height of the first lower cushion block (1) is 9.50 mm, the middle position of the outer circle surface of the first lower cushion block (1) is engraved with a number of 9.50 by an electric engraving pen, and the first lower cushion block (1) is coated with blue; the height of the second lower cushion block (2) is 10.00 mm, and a number 10 is engraved in the middle of the surface of the outer circle through an electric engraving pen and is coated to be blue; the upper end faces of the lower cushion blocks (1) and the lower cushion blocks (2) of the two specifications are respectively provided with a boss with the height of 2.00 mm. According to the invention, three structural members are designed, sizes with numerical rules are designed, ordered permutation and combination are carried out, 30 kinds of ordered sequence combination heights are realized, the level difference is 0.1, and the specific height value is gradually increased by an equal difference value of 0.10 mm in a range of 27.50-30.40 mm.

Description

Technical field: [0001] The invention relates to a combined cushion block with a stepwise adjustable overall height and a combined method. Background technique: [0002] In the process of shrinking the rotor flywheel of the shaft seal main pump motor of a nuclear power plant, a limit pad is required with a tolerance of 0-0.05mm, and the drawing requires a nominal height dimension of 28.80mm. During the set process, the actual size is different, there is a deviation of about plus or minus 1mm, and each set needs to be measured and prepared now, which prolongs the production cycle and cannot be reused, resulting in double waste of time and production costs. , it is imagined that if a simple and adjustable combination block can be developed, in actual use, the required height can be achieved by changing the combination of blocks of different specifications, and the problem will be solved. The prerequisite is that the structure of the combination block should be simple, Only wh...

AI Technical Summary

Problems solved by technology

[0002] In the process of shrinking the rotor flywheel of the shaft seal main pump motor of a nuclear power plant, a limit pad is required with a tolerance of 0-0.05mm, and the drawing requires a nominal height dimension of 28.80mm. During the set process, the actual size is different, there is a deviation of about plus or minus 1mm, and each set needs to be measured and prepared now, which prolongs the production cycle and cannot be reused, resulting in double waste of time and production costs. , it is imagined that if a simple and adjustable combination block can be developed, in actual use, the required height can be achieved by changing the combination of blocks of different specifications, and the problem will be solved. The prerequisite is that the structure of the combination block should be simple, The level difference must be small enough to achieve full-scale coverage, which is of practical significance. This invention is developed for this requirement

Images