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Large horizontal coupling pendulum finding method

A shaft-coupling and horizontal-type technology, which is applied in the field of large-scale horizontal coupling to find the pendulum, can solve the problems of poor measurement effect, low measurement accuracy, and influence on the pendulum-finding accuracy, and achieve the goals of solving deflection, improving machining accuracy, and eliminating machining accuracy effect of influence

Active Publication Date: 2020-07-17
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This patent document discloses a large-scale hydraulic turbine vertical coupling method for finding the swing. Manually measure the distance from the shaft measurement point to the piano line through the vertical line. The measurement effect is poor and the measurement accuracy is low. If the coupling is out of tolerance, the vertical If the pendulum is found by the formula, it cannot be corrected, which will affect the precision of the pendulum.

Method used

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  • Large horizontal coupling pendulum finding method

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Experimental program
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Effect test

Embodiment 1

[0034] see figure 1 , a method for finding a pendulum of a large horizontal coupling, comprising the following steps:

[0035] a. Connect the generator main shaft 4 of the shaft coupling pendulum finding device with the chuck 2 of the lying car through the universal joint 3, support the generator main shaft 4 through the center support frame 1 6 and the center support frame 2 7, and start the horizontal lathe 1 Machining the surface of generator main shaft 4;

[0036] b. The main shaft 4 of the generator is connected with the main shaft 5 of the water turbine after the processing is qualified, and the main shaft 5 of the water turbine is supported by the center support frame 3 8, and the center support frame 1 6, the center support frame 2 7 and the center support frame 3 8 are calculated by using finite element method Support deflection and analysis, fine-tune the arrangement position of central support frame 1 6, central support frame 2 7 and central support frame 3 8;

[...

Embodiment 2

[0041] see figure 1 , a method for finding a pendulum of a large horizontal coupling, comprising the following steps:

[0042] a. Connect the generator main shaft 4 of the shaft coupling pendulum finding device with the chuck 2 of the lying car through the universal joint 3, support the generator main shaft 4 through the center support frame 1 6 and the center support frame 2 7, and start the horizontal lathe 1 Machining the surface of generator main shaft 4;

[0043] b. The main shaft 4 of the generator is connected with the main shaft 5 of the water turbine after the processing is qualified, and the main shaft 5 of the water turbine is supported by the center support frame 3 8, and the center support frame 1 6, the center support frame 2 7 and the center support frame 3 8 are calculated by using finite element method Support deflection and analysis, fine-tune the arrangement position of central support frame 1 6, central support frame 2 7 and central support frame 3 8;

[...

Embodiment 3

[0050] see figure 1 , a method for finding a pendulum of a large horizontal coupling, comprising the following steps:

[0051] a. Connect the generator main shaft 4 of the shaft coupling pendulum finding device with the chuck 2 of the lying car through the universal joint 3, support the generator main shaft 4 through the center support frame 1 6 and the center support frame 2 7, and start the horizontal lathe 1 Machining the surface of generator main shaft 4;

[0052] b. The main shaft 4 of the generator is connected with the main shaft 5 of the water turbine after the processing is qualified, and the main shaft 5 of the water turbine is supported by the center support frame 3 8, and the center support frame 1 6, the center support frame 2 7 and the center support frame 3 8 are calculated by using finite element method Support deflection and analysis, fine-tune the arrangement position of central support frame 1 6, central support frame 2 7 and central support frame 3 8;

[...

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Abstract

The invention discloses a large horizontal coupling pendulum finding method, which belongs to the technical field of hydro-generator coupling. The method is characterized by comprising the following steps of a, connecting a generator spindle of a coupling pendulum finding device with a horizontal lathe chuck through a universal joint, supporting the generator spindle through a central support frame I and a central support frame II, and starting a horizontal lathe to machine the surface of the generator spindle, b, calculating and analyzing the support deflection of the central support frame I,the central support frame II and the central support frame III by applying finite elements, c, measuring the distance from the surface of the spindle to the rotation center through a dial indicator,and judging whether the distance meets a preset swing range, and d, if the preset swing range is met, completing coupling pendulum finding. The influence of the rotation precision of the machine toolspindle on the machining precision can be eliminated, the deflection generated by the ultra-long shafting in the horizontal direction is solved, the bearing capacity and the rotation precision of thehorizontal lathe are improved, the accuracy and the reliability of pendulum finding precision are greatly improved, and the whole operation is quite convenient.

Description

technical field [0001] The invention relates to the technical field of hydraulic generator couplings, in particular to a method for finding a pendulum of a large horizontal coupling. Background technique [0002] Conventional hydro-generator unit shaft coupling is used to find the shaft coupling, and the heavy-duty horizontal car is used to detect the radial and end surface runout of the mirror surface or guide bearing journal, flange plane and outer circle. The shafting of the unit that does not find the swing in the horizontal car coupling uses the boring die to process the main shaft of the generator and the turbine separately. Due to the errors in the alignment of the boring dies, the accuracy of the shaft coupling on the construction site is not high. [0003] The super-long shafting horizontal coupling adopts a horizontal car with one card and one support or double supports. When the length of the shafting reaches more than 10m and the weight reaches about 100t, the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/00G01B5/252
CPCG01B5/00G01B5/252
Inventor 杨悦伟张翔付封旗
Owner DONGFANG ELECTRIC MACHINERY
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