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A method for removing the shaft of a marine motor pump

A marine motor and pump shaft technology, applied in the field of ships, can solve problems such as removal of marine motor pump shafts

Active Publication Date: 2021-09-10
中国船舶集团渤海造船有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of dismantling the pump shaft of the marine motor, the invention proposes a method for dismantling the pump shaft of the marine motor
This method solves the technical problem of dismantling the pump shaft of the seawater pump by using the dismantling tool of the seawater pump

Method used

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  • A method for removing the shaft of a marine motor pump
  • A method for removing the shaft of a marine motor pump
  • A method for removing the shaft of a marine motor pump

Examples

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Embodiment 1

[0026] Take the dismantling of a marine vertical seawater pump as an example. There is no transitional installation between the seawater pump and the motor. The seawater pump casing and the motor casing are directly connected by fasteners. The seawater pump shaft is made in the form of a half set and a half shaft. The positive fit is connected with the motor shaft through the key transmission mode, and the part of the half shaft extends into the centrifugal pump casing, and is connected with the impeller through the key transmission mode with a small gap fit. After the motor pump is used for a long time, the part of the half set and the motor shaft are corroded and integrated. When the part of the half shaft is worn out, it cannot meet the requirements of the seawater pump, and the motor pump shaft must be removed. For the disassembly of the seawater pump shaft, the disassembly steps and process are explained in detail.

[0027] How to remove the pump shaft:

[0028] Step 1:...

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Abstract

The invention provides a method for removing a pump shaft of a marine motor. The welding frame is equipped with a fixed base plate, which is integrated with the welding frame through the flat gasket and the hexagon nut of the tension rod through the auxiliary tension rod. On the fixed base plate, the seawater pump motor is installed on the lower part, and the pump shaft is placed on the upper part of the seawater pump motor, which is placed in the gap at the front end of the lever. The rear pin shaft is passed through the rotating shaft sleeve of the main shaft end, and the upper part is fixed by a gasket and a hexagon nut. The lever The support shaft frame is fixed on the fixed base plate through the adjustment pad, the upper part is fixed to the side of the lever through the middle pin shaft, and the oil cylinder is connected to the front part of the lever through the front pin shaft, and the upper part is fixed on the bushing through the upper pin shaft. It is connected with the upper part of the welding frame, and a high-frequency induction heating machine is installed on the pump shaft to heat the pump shaft. The invention disassembles the shaft sleeve through high-frequency heating. It is suitable for application as a method for disassembling shaft sleeves of marine seawater pumps.

Description

technical field [0001] The invention relates to the field of ships, in particular to a method for removing a pump shaft of a marine motor. Background technique [0002] In the annual docking inspection and repair of various ships, the inspection and repair of the pump is an important project that must be done every time, and the work tasks are very heavy. The motor shaft of the pump is almost completely worn beyond the use requirements in the long-term use of cold-packing, baking-packing, etc. In this case, the out-of-tolerance motor pump shaft must be removed and replaced with a new one. The existing method is: to make a special temporary tool for the removal of a single motor pump shaft, use a hydraulic jack to draw it cold or use a flame heating method, cooperate with a jack to heat it, or use a destructive removal method. After repairing a ship in the above way, multiple sets of temporary dismantling tooling of different types must be made, which wastes a lot of time, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/14
CPCB25B27/14
Inventor 刘兵戚雪峰王波刘书新李君刘阳刘冶
Owner 中国船舶集团渤海造船有限公司
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