Special gear oil for shield and preparation method thereof

A gear oil and shield technology, applied in the field of lubricating oil, can solve the problems of large impact force of shield bearing gear, fluctuation of bearing gear torque, affecting the smooth excavation of the shield, so as to achieve good protection, improve extreme pressure performance, and smooth excavation. Effect

Active Publication Date: 2012-10-17
HAILIAN INST OF LUBRICATING MATERIALS SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] At present, the existing gear oils all have different defects. For example, the 680 heavy-duty industrial gear oil of BP Company is used now. The test data of this gear oil are good. On relatively hard road sections, the bearing gears of the shield machine are subjected to a large impact force, and the torque fluctuations of the bearing gears will be very large, which seriously affects the smooth excavation of the shield machine and poses a very large safety hazard

Method used

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  • Special gear oil for shield and preparation method thereof
  • Special gear oil for shield and preparation method thereof
  • Special gear oil for shield and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] The preparation method of boron nitride after surface treatment:

[0057] Mix boron nitride with bis-succinimide dispersant, stir and disperse at 63°C for 50 minutes, and then grind the obtained mixture with a ball mill for 48 hours to obtain surface-treated boron nitride;

[0058] Boron nitride: bis-succinimide = 1: 1.5, weight ratio;

[0059] The resulting product did not require isolation and had an average particle size of 85 nm.

Embodiment 1

[0061]

[0062]

[0063] In the preparation method, each component is mixed and stirred evenly to obtain the product.

[0064] Test results:

[0065]

Embodiment 2

[0067] The boron nitride after surface treatment is the same as in Example 1.

[0068]

[0069]

[0070] Test results

[0071]

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PUM

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Abstract

The invention discloses special gear oil for a shield and a preparation method of the special gear oil. The special gear oil for the shield comprises the following components in percentage by weight: 0.5-1.0% of antioxidant, 1.5-3.0% of extreme pressure anti-wear additive, 1.0-2.0% of oiliness agent, 0.3-0.7% of pour point depressant, 0.1-0.3% of anti-rusting agent, 0.1-0.3% of copper corrosion inhibitor, 100-300ppm of emulsion breaker, 10-40ppm of defoaming agent and the balance of base oil. The wear resistance and the extreme pressure property of a product are obviously improved due to the gear oil, and equipment bearings and gears are obviously better protected. In a shield tunneling process, even if a section with a quite rigid soil texture appears, the torque ripples of the shield bearings and the gears can also be guaranteed to be small, so the stable tunneling of a shield machine is guaranteed.

Description

technical field [0001] The invention relates to a lubricating oil, in particular to a special gear oil for shield tunneling and a preparation method thereof. Background technique [0002] As the shield tunneling machine is widely used, its consumables, especially the adaptability of oil and equipment, as well as the adaptability to the environment, are issues of great concern in the optical field. [0003] Since the large-scale shield tunneling machine is a heavy-duty construction equipment, its load is high, the equipment working pressure is high, and the manufacturing accuracy of the equipment is also very strict, so the oil is required to have high lubricity and extreme pressure. At present, the oil products used by foreign shield tunneling machines are mainly produced by British BP, SHELL and American Mobil. These products are generally formed by adding various additives to petroleum-based base oils. [0004] Gear transmission is the most important transmission mode in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M167/00C10N30/06C10N40/02C10N40/04
Inventor 王鹏汪宪臣杨磊赵洁咏石元奇
Owner HAILIAN INST OF LUBRICATING MATERIALS SHANGHAI
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