Method for adjusting star wheel-rotor engagement accuracy of single screw rod type refrigerating compressor

Abstract

The invention relates to a method for adjusting star wheel-rotor engagement accuracy of a single screw rod type refrigerating compressor. The method has the following steps that: (1) a main shaft is arranged in a machine casing, and a circular gasket is prearranged; (2) a centering tooling is arranged in the machine casing position in which a star wheel is arranged; (3) a screw rod rotor rotates, the end of a centering needle is adjusted to one end of a rotor groove, and a reading of a dialgage at the time is recorded as a; the screw rod rotor reversely rotates, the end of the centering needle is adjusted to the other end of the rotor groove, and a reading of the dialgage at the time is recorded as b; the tolerance range is set to be 0+ / -delta, and the difference between b and a is compared with 0+ / -delta; (4) if the difference between b and a exceeds the tolerance range, the thickness of the circular gasket between the fixed mating surfaces is increased or decreased, and the step (3) is repeated, until the difference between b and a is controlled within the tolerance range. The invention solves the problems that the traditional star wheel-rotor engagement has complicated debugging process, the assembly efficiency of the products is low, and the assembled star wheel-rotor engagement is still low.

Description

technical field

[0001] The invention relates to a single-screw refrigeration compressor, and mainly relates to a method for adjusting the meshing accuracy of the star wheel and the rotor of the single-screw refrigeration compressor. The center of the circle is moved to the axis line of the star wheel, so as to ensure the meshing accuracy between the screw rotor and the star wheel. Background technique

[0002] Commonly used single-screw refrigeration compressors, such as figure 1 As shown, the meshing pair is composed of a screw rotor 1 and two symmetrically arranged plane star wheels 2 in the casing 7. The rotor slot 12 of the screw rotor 1, the inner cavity of the casing 7 and the tooth top plane of the star wheel 2 are composed of three parts. Closed primitive volume. When the power is transmitted to the screw rotor, the screw rotor drives the star wheel to rotate, and the gas enters the screw groove from the suction cavity, and is discharged from the exhaust cavity thr...

Examples

Embodiment

[0034] Such as Figure 2~4 As shown, a single-screw refrigeration compressor star wheel-rotor meshing precision adjustment method, before the adjustment, such as figure 2 As shown, a centering tool is produced, which is composed of two flanges 5, a rotating shaft 6, a dial indicator 4 and a centering needle 3, and the rotating shaft 6 is rotatably connected between the two flanges 5, The dial indicator 4 is arranged in the middle of the rotating shaft 6 , and its probe end is perpendicular to the rotating shaft 6 and fixedly connected with the aligning needle 3 .

[0035] The steps of the adjustment method are as follows:

[0036] (1) Put the main shaft component composed of screw rotor 1, main shaft 8, bearing 9 and bearing housing 10 into the housing 7 from one end of the housing 7, and the shaft shoulder of the bearing housing 10 is along the circumferential direction of the housing 7 opening. The mouth fits to form a pair of fixed mating surfaces perpendicular to the ax...

technical field

[0001] The invention relates to a single-screw refrigeration compressor, and mainly relates to a method for adjusting the meshing accuracy of the star wheel and the rotor of the single-screw refrigeration compressor. The center of the circle is moved to the axis line of the star wheel, so as to ensure the meshing accuracy between the screw rotor and the star wheel. Background technique

[0002] Commonly used single-screw refrigeration compressors, such as figure 1 As shown, the meshing pair is composed of a screw rotor 1 and two symmetrically arranged plane star wheels 2 in the casing 7. The rotor slot 12 of the screw rotor 1, the inner cavity of the casing 7 and the tooth top plane of the star wheel 2 are composed of three parts. Closed primitive volume. When the power is transmitted to the screw rotor, the screw rotor drives the star wheel to rotate, and the gas enters the screw groove from the suction cavity, and is discharged from the exhaust cavity thr...

Examples

Embodiment

[0034] Such as Figure 2~4 As shown, a single-screw refrigeration compressor star wheel-rotor meshing precision adjustment method, before the adjustment, such as figure 2 As shown, a centering tool is produced, which is composed of two flanges 5, a rotating shaft 6, a dial indicator 4 and a centering needle 3, and the rotating shaft 6 is rotatably connected between the two flanges 5, The dial indicator 4 is arranged in the middle of the rotating shaft 6 , and its probe end is perpendicular to the rotating shaft 6 and fixedly connected with the aligning needle 3 .

[0035] The steps of the adjustment method are as follows:

[0036] (1) Put the main shaft component composed of screw rotor 1, main shaft 8, bearing 9 and bearing housing 10 into the housing 7 from one end of the housing 7, and the shaft shoulder of the bearing housing 10 is along the circumferential direction of the housing 7 opening. The mouth fits to form a pair of fixed mating surfaces perpendicular to the ax...

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