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

Grease for elevator rope, elevator rope, and traction elevator

A technology for lubricating grease and slings, applied in lubricating compositions, textile cables, transportation and packaging, etc., can solve problems such as increased wear, increased pressure, and reduced tensile strength of slings, and achieves the effect of high wear resistance

Active Publication Date: 2018-07-31
HITACHI LTD
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, by increasing the contact surface pressure, there is also concern about an increase in wear caused by contact between the sling and the sheave
[0005] Here, the thinning of the sling increases the contact surface pressure of the contact portion, and decreases the tensile strength of the sling
Although the contact surface pressure increases by weighting the car, etc., the load on the sling also increases, so it is necessary to make adjustments considering the safety ratio of the sling
In addition to reducing the size of the device, research has also been carried out on reducing the weight of the car, etc. from the viewpoint of energy saving and long life, and there are many technical restrictions on the method of increasing the contact surface pressure.

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
  • Grease for elevator rope, elevator rope, and traction elevator
  • Grease for elevator rope, elevator rope, and traction elevator
  • Grease for elevator rope, elevator rope, and traction elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0126] Hereinafter, although an Example and a comparative example are used and this invention is demonstrated concretely, this invention is not limited to these Examples.

[0127] (1) Evaluation method of sling oil and grease

[0128] (1-1) Determination of kinematic viscosity, consistency and dropping point of sling oil

[0129] The kinematic viscosity (40 degreeC, 100 degreeC) of a sling oil was measured based on JIS standard (JIS K2283). In addition, the consistency (unmixed consistency, mixed consistency) and dropping point of the grease were measured based on JIS standards (JIS K2220). In addition, the viscosity grade was evaluated based on ISO (International Organization for Standardization, International Organization for Standardization) 3448 from the value of the kinematic viscosity at 40°C of the sling oil.

[0130](1-2) Determination of traction coefficient

[0131] The traction coefficient was measured using a Ball on Disk (ball on disk) test device. This test d...

reference example 7

[0183] (2-10) Reference Example 7: Synthesis of Synthetic Oil 11

[0184] 1kg of terpinolene, 200mL of cyclohexane, 100ml of 1,2-diethoxyethane, and 100g of cation exchange resin as a catalyst were added to a 10L glass reaction vessel, heated at 60°C for 6 hours, and stirred. After the reaction, it was cooled in a 20° C. water bath, and the solid catalyst was filtered off. Use a rotary evaporator to recover the solvent and unreacted raw materials, add 500g of the reaction solution to a 1L autoclave, add 50g of nickel catalyst for hydrogenation, and seal it with a hydrogen pressure of 50kg / cm 2 (G), carry out hydrogenation at 120° C. for 4 hours, cool naturally to room temperature, and filter out the catalyst.

[0185] The obtained product was analyzed by gel filtration chromatography, and a dimer component (synthetic oil 11) was formed. The entire reaction solution was distilled under reduced pressure, and only the dimer component was fractionated.

[0186] (2-11) Reference...

Embodiment 1

[0191] In Examples 17 to 26, the synthetic oil in Example 1 was changed to other polycyclic naphthene compounds (synthetic oils 6 to 15). Table 4 shows the composition and evaluation results of the base oil. All showed high traction coefficient and wear resistance similarly to Example 1.

[0192] [Table 4]

[0193]

[0194] (2-14) Reference Example 9: Preparation of Thickener

[0195] In a 3 L glass reaction vessel, 30 g of ethylenediamine and 300 g of 12-hydroxystearic acid were dissolved in m-xylene, 15 g of iron(III) chloride hexahydrate was added as a catalyst, and the mixture was heated to reflux for 10 hours. After the product was filtered off, the product was isolated and purified by recrystallization.

[0196] The resulting product was analyzed by gel filtration chromatography, whereby fatty acid diamide (N,N'-ethylene-bis-12-hydroxystearamide) was obtained.

[0197] (2-15) Preparation and evaluation of the greases of Examples 27 to 33 and Comparative Example 2 ...

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
Kinematic viscosityaaaaaaaaaa
Kinematic viscosityaaaaaaaaaa
Kinematic viscosityaaaaaaaaaa
Login to View More

Abstract

Provided are: grease for elevator ropes which has both high traction properties and high wear resistance, and further has adhesion to rope surfaces; and an elevator rope and a traction elevator whichuse the grease for elevator ropes. This grease for elevator ropes is configured from a grease layer of an elevator rope that includes a wire rope and the grease layer formed on the surface of the wirerope. The grease for elevator ropes is characterized by comprising grease that includes a base oil containing a hydrocarbon component and a naphthene compound, the hydrocarbon component being liquidor solid with a kinetic viscosity at 40 DEG C of greater than 60 mm<2> / s and being contained in an amount of 30 to 90% by mass of the grease

Description

technical field [0001] The present invention relates to a lubricating grease for elevator slings, elevator slings and traction elevators. Background technique [0002] In recent years, traction elevators without a machine room are being used as elevators for low- and middle-rise buildings. Since the traction elevator does not have a machine room, the degree of freedom in the design and layout of the elevator installation is improved, and it can also be installed in narrow spaces that were difficult to install in the past. Therefore, it is popularized at the time of new establishment and renewal of devices. [0003] Elevator ropes (hereinafter referred to as "elevator ropes") are usually ropes specified in JIS G 3525, for example. An elevator sling is a structure (wire rope) in which about 6 or 8 strands are arranged around a core cable made of synthetic fibers or natural fibers and twisted. In addition, strands are formed by twisting multiple steel wires. When tension is...

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
IPC IPC(8): C10M171/02B66B7/12C10M105/04C10M107/08C10M115/02C10M115/08C10M143/00C10N20/02C10N40/32C10N50/10
CPCB66B7/12C10M143/00C10M171/02C10M105/04C10M107/08C10M115/02C10M115/08D07B1/144D07B2501/2007B66B7/1261C10N2050/10
Inventor 布重纯太田亮大部芳树中山真人安部贵
Owner HITACHI LTD
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