Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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: 2013-08-07
HAILIAN INST OF LUBRICATING MATERIALS SHANGHAI +1
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com