A vibration-damping and anti-wear composite solid lubricating paste for a spline shaft of a sprocket shaft assembly and a preparation method thereof

Abstract

The invention discloses a sprocket shaft group spline shaft damping and anti-wear composite solid lubricating paste, belongs to the technical field of solid lubrication engineering, and includes the following raw materials: base oil, molybdenum disulfide, hexagonal boron nitride, niobium diselenide, carbon, tin, tungsten carbide, polybutylene glycol, thickener and antioxidant. The sprocket shaft group spline shaft damping and anti-wear composite solid lubricating paste of the present invention has small dosage, long effective lubrication time, saves resources, reduces labor intensity, and adds antioxidant dipentyl dithiocarbamate to form a semi-fluid self-sealing composite solid lubricating paste, and the viscosity is regulated by thickener 12-hydroxy stearic acid lithium soap, and cooperates with solid raw materials to realize the automatic plugging function of the oil leakage gap of the gear box; by correctly applying the solid lubricating paste, the normal operation of the machine under special working conditions can be guaranteed, the safety factor of the use of mechanical equipment can be improved, and the service life of the machine can be extended.

Description

Technical Field

[0001] The invention relates to the technical field of solid lubrication engineering, in particular to a vibration-damping and wear-resistant composite solid lubricating paste for a spline shaft of a sprocket shaft assembly and a preparation method thereof. Background Art

[0002] The scraper sprocket shaft group is the power transmission component of the scraper conveyor and scraper transfer machine, and is a key component of coal mine comprehensive mining equipment. The related technical improvements are directly related to the efficiency and benefits of the coal mine comprehensive mining system and the quality and reputation of our Tiandi Benniu scraper products. Since the birth of the first anti-British joint coal mining machinery system in the UK in the 1970s, the oil leakage of the scraper sprocket shaft group has caused damage to the component, which has always been the crux of the technological progress of coal mining machines. Especially with the continuous improvement of the market's technical requirements for equipment manufacturing companies, integrating related technologies and integrating high-end supporting resources to create long-term continuous operation of coal mine transportation machinery and equipment has become the focus of general attention in the industry. At present, the average service life of the sprocket shaft group of the scraper imported from developed countries such as Britain, Italy, Germany, and the United States is less than 24 months, and the service life after repair is only about half a year. The structure of the imported scraper sprocket shaft group is the same as that of similar domestic products, but the price is about 3-8 times that of similar domestic products; although the key components of the domestic sprocket shaft group are mostly bearings and floating seals of internationally renowned brands such as Timken, FAG, SKF, and NSK, the average service life of the new product delivery is generally about two to nine months, and the average service life after the second repair is less than five months. Whether it is an imported sprocket shaft group or a domestic sprocket shaft group, the system is shut down due to the joint damage of the spline and other parts. It takes an average of about 8 hours to replace the component each time it is shut down.

[0003] Therefore, how to provide a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly suitable for harsh conditions and a preparation method thereof is a problem that urgently needs to be solved by those skilled in the art. Summary of the invention

[0004] In view of this, the present invention provides a vibration-damping and wear-resistant composite solid lubricating paste for a spline shaft of a sprocket shaft assembly suitable for harsh conditions and a preparation method thereof.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A vibration-damping and anti-wear composite solid lubricating paste for a spline shaft of a sprocket shaft assembly comprises the following raw materials: base oil, molybdenum disulfide, hexagonal boron nitride, niobium diselenide, carbon powder, tin powder, tungsten carbide, polybutylene glycol, a thickener and an antioxidant.

[0007] Furthermore, the shock-absorbing and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly comprises the following raw materials in percentage by mass: 14.4% to 37% molybdenum disulfide, 4.8% to 19% hexagonal boron nitride, 1.6% to 10% niobium diselenide, 0.8% to 7% carbon powder, 0.08% to 4% tin powder, 0.4% to 6% tungsten carbide, 0.16% to 9% polybutylene glycol, 0.24% to 4.2% thickener, 2.4% to 11% antioxidant, and the balance is base oil.

[0008] Or, the shock-absorbing and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly comprises the following raw materials in percentage by weight: 12.8% to 34% molybdenum disulfide, 6.4% to 17% hexagonal boron nitride, 2.4% to 8% niobium diselenide, 0.8% to 5% carbon, 0.08% to 3% tin, 0.4% to 5% tungsten carbide, 2.4% to 7% polybutylene glycol, 0.24% to 4.2% thickener, 3.2% to 9% antioxidant, and the balance is base oil.

[0009] Preferably, the shock-absorbing and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly comprises the following raw materials in percentage by mass: 16% to 32% molybdenum disulfide, 6.4% to 17% hexagonal boron nitride, 2.4% to 8% niobium diselenide, 0.8% to 5% carbon, 0.08% to 3% tin, 0.4% to 5% tungsten carbide, 2.4% to 7% polybutylene glycol, 0.24% to 4.2% thickener, 3.2% to 9% antioxidant, and the balance is base oil.

[0010] Further, the thickener is a lithium-based soap;

[0011] Furthermore, the lithium-based soap consists of lithium hydroxide and 12-hydroxystearic acid.

[0012] Preferably, the mass ratio of the lithium hydroxide to 12-hydroxystearic acid is 0.1-10:0.2-3.

[0013] The beneficial effect of adopting the above further scheme is that: research shows that the lithium-based soap formed by lithium hydroxide and 12-hydroxystearic acid has significantly better performance than other lithium-based soaps.

[0014] Furthermore, the antioxidant is dipentyl dithiocarbamate.

[0015] The beneficial effect of adopting the above further scheme is that the antioxidant used in the present invention can react with free radicals to make them inactive and prevent oxidation. Adding the antioxidant can effectively prevent the solid lubricant from aging, thereby increasing the life of the solid lubricant.

[0016] Furthermore, the base oil is polyether.

[0017] The present invention also provides a method for preparing the above-mentioned vibration-damping and wear-resistant composite solid lubricating paste for the spline shaft of the sprocket shaft assembly, comprising the following steps:

[0018] (1) Weighing the raw materials according to the mass percentages mentioned in the claims;

[0019] (2) placing the solid raw materials among the weighed raw materials into a mixer for mixing, and placing the liquid raw materials among the weighed raw materials into a liquid mixer for mixing;

[0020] (3) The solid raw material after ball milling is placed in a mixing container, heated to 150-160° C., stirred, and the liquid raw material is slowly added, stirred for 80 minutes to make the mixture evenly mixed, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0021] Furthermore, in step (2), the particle size of the solid raw material after mixing in the mixer is not greater than 80 μm.

[0022] Furthermore, the mixing time in the mixer in step (2) is 80-120 min.

[0023] Compared with the prior art, the invention has the following beneficial effects: the invention provides a vibration-damping and wear-resistant composite solid lubricating paste for a spline shaft of a sprocket shaft assembly; the composite solid lubricating paste of the invention has a small amount of use, a long effective lubrication time, saves resources, reduces labor intensity, and adds an antioxidant diamyl dithiocarbamate to form a semi-fluid self-sealing composite solid lubricant; the viscosity is regulated by a thickener 12-hydroxystearate lithium soap, and the paste cooperates with the solid raw material to realize the automatic plugging function of the oil leakage gap of the gear box; by correctly applying the solid lubricating paste, the normal operation of the machine under special working conditions can be guaranteed, the safety factor of the use of mechanical equipment can be improved, the service life of related friction and wear parts can be improved, and the service life of the machine can be extended by at least 5-8 months, creating favorable conditions for the mechanical equipment to achieve large-scale, miniaturized, high-speed operation, and automatic control, and can also provide great convenience for improving the existing mechanical equipment by adopting new processes, new technologies, and new materials, as well as for the reform of mechanical parts design, thereby achieving the purpose of saving manpower, materials, and energy and improving product quality. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In an embodiment of the present invention, the thickener is a lithium-based soap, and the lithium-based soap is composed of lithium hydroxide and 12-hydroxystearic acid in a mass ratio of 1:1; the antioxidant is dipentyl dithiocarbamate; and the base oil is polyether.

[0026] Example 1

[0027] A vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly

[0028] (1) Weigh the following by mass percentage: 37% molybdenum disulfide, 4.8% hexagonal boron nitride, 1.6% niobium diselenide, 0.8% carbon, 0.08% tin, 6% tungsten carbide, 0.16% polybutylene glycol, 0.24% thickener, 2.4% antioxidant, and the remainder as base oil.

[0029] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0030] (3) The solid raw material after ball milling is placed in a mixing container, heated to 160° C., stirred, and the liquid raw material is slowly added, stirred for 80 minutes to make the mixture evenly mixed, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0031] Example 2

[0032] A vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly

[0033] (1) Weigh the following by mass percentage: 14.4% molybdenum disulfide, 17% hexagonal boron nitride, 8% niobium diselenide, 7% carbon, 3% tin, 0.4% tungsten carbide, 7% polybutylene glycol, 4.2% thickener, 9% antioxidant, and the remainder as base oil.

[0034] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0035] (3) The solid raw material after ball milling is placed in a mixing container, heated to 150° C., stirred, and the liquid raw material is slowly added and stirred for 80 minutes to mix evenly, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0036] Example 3

[0037] A vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly

[0038] (1) Weigh the following by mass percentage: 25.2% molybdenum disulfide, 10.2% hexagonal boron nitride, 5.2% niobium diselenide, 1.4% carbon, 1% tin, 2.2% tungsten carbide, 4.2% polybutylene glycol, 1.2% thickener, 5.2% antioxidant, and the remainder as base oil.

[0039] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0040] (3) The ball-milled solid raw material is placed in a mixing container, heated to 155° C., stirred, and the liquid raw material is slowly added, stirred for 80 minutes to mix evenly, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0041] Example 4

[0042] A vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly

[0043] (1) Weigh the following by mass percentage: 28.2% molybdenum disulfide, 12.2% hexagonal boron nitride, 4.2% niobium diselenide, 2.2% carbon, 0.7% tin, 1.7% tungsten carbide, 3.7% polybutylene glycol, 2% thickener, 6.2% antioxidant, and the remainder as base oil.

[0044] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0045] (3) The solid raw material after ball milling is placed in a mixing container, heated to 160° C., stirred, and the liquid raw material is slowly added, stirred for 80 minutes to make the mixture evenly mixed, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0046] Example 5

[0047] A vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly

[0048] (1) Weigh the following by mass percentage: 27.2% molybdenum disulfide, 9.2% hexagonal boron nitride, 4.7% niobium diselenide, 2% carbon, 0.9% tin, 2.7% tungsten carbide, 5.2% polybutylene glycol, 2.2% thickener, 4.2% antioxidant, and the remainder as base oil.

[0049] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0050] (3) The solid raw material after ball milling is placed in a mixing container, heated to 153° C., stirred, and the liquid raw material is slowly added, stirred for 120 minutes to make the mixture evenly mixed, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0051] Example 6

[0052] A vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly

[0053] (1) Weigh the following by mass percentage: 27.2% molybdenum disulfide, 9.2% hexagonal boron nitride, 4.7% niobium diselenide, 2% carbon, 0.9% tin, 2.7% tungsten carbide, 5.2% polybutylene glycol, 2.2% thickener, 4.2% antioxidant, and the remainder as base oil.

[0054] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0055] (3) The ball-milled solid raw material is placed in a mixing container, heated to 158° C., stirred, and the liquid raw material is slowly added, stirred for 100 minutes to mix evenly, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0056] Example 7

[0057] A preparation method of a vibration-damping and anti-wear composite solid lubricating paste for a sprocket shaft assembly spline shaft:

[0058] (1) Weigh the following by mass percentage: 22% molybdenum disulfide, 12% hexagonal boron nitride, 5.5% niobium diselenide, 2.5% carbon, 1.3% tin, 3.6% tungsten carbide, 4.7% polybutylene glycol, 3.2% thickener, 6.2% antioxidant, and the balance as base oil;

[0059] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0060] (3) The solid raw material after ball milling is placed in a mixing container, heated to 152° C., stirred, and the liquid raw material is slowly added, stirred for 110 minutes to make it evenly mixed, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0061] Example 8

[0062] A preparation method of a vibration-damping and anti-wear composite solid lubricating paste for a sprocket shaft assembly spline shaft:

[0063] (1) Weigh the following by mass percentage: 31.2% molybdenum disulfide, 8.8% hexagonal boron nitride, 6.5% niobium diselenide, 3.4% carbon, 2.2% tin, 3.3% tungsten carbide, 5.7% polybutylene glycol, 2.8% thickener, 8.5% antioxidant, and the balance being base oil;

[0064] (2) placing the solid raw materials in the weighed raw materials into a mixer for mixing, wherein the particle size of the solid raw materials after mixing in the mixer is not greater than 80 μm, and placing the liquid raw materials in the weighed raw materials into a liquid mixer for mixing;

[0065] (3) The solid raw material after ball milling is placed in a mixing container, heated to 155° C., stirred, and the liquid raw material is slowly added, stirred for 90 minutes to make the mixture evenly mixed, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

[0066] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vibration-damping and anti-wear composite solid lubricating paste for a spline shaft of a sprocket shaft assembly, characterized in that: The invention comprises the following raw materials: base oil, molybdenum disulfide, hexagonal boron nitride, niobium diselenide, carbon powder, tin powder, tungsten carbide, polybutylene glycol, thickener and antioxidant.

2. The vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly according to claim 1, characterized in that: The invention comprises the following raw materials in percentage by weight: 14.4% to 37% of molybdenum disulfide, 4.8% to 19% of hexagonal boron nitride, 1.6% to 10% of niobium diselenide, 0.8% to 7% of carbon powder, 0.08% to 4% of tin powder, 0.4% to 6% of tungsten carbide, 0.16% to 9% of polybutylene glycol, 0.24% to 4.2% of thickener, 2.4% to 11% of antioxidant, and the balance is base oil.

3. The vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly according to claim 2, characterized in that: The thickener is a lithium-based soap, which is composed of lithium hydroxide and 12-hydroxystearic acid.

4. The vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly according to claim 2, characterized in that: The antioxidant is dipentyl dithiocarbamate.

5. The vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of a sprocket shaft assembly according to claim 2, characterized in that: The base oil is polyether.

6. A method for preparing a vibration-damping and anti-wear composite solid lubricating paste for a sprocket shaft assembly spline shaft, characterized in that: The following steps are involved: (1) Weighing each raw material according to the mass percentage described in any one of claims 2 to 5; (2) placing the solid raw materials among the weighed raw materials into a mixer for mixing, and placing the liquid raw materials among the weighed raw materials into a liquid mixer for mixing; (3) The mixed solid raw material is placed in a mixing container, heated to 150-160° C., stirred, and the liquid raw material is added, stirred for 80-120 minutes to mix evenly, and cooled to room temperature to obtain a vibration-damping and anti-wear composite solid lubricating paste for the spline shaft of the sprocket shaft assembly.

7. The method for preparing a vibration-damping and anti-wear composite solid lubricating paste for a spline shaft of a sprocket shaft assembly according to claim 6, characterized in that: In step (2), the particle size of the solid raw material after mixing in the mixer is no greater than 80 μm.

8. The method for preparing a vibration-damping and anti-wear composite solid lubricating paste for a spline shaft of a sprocket shaft assembly according to claim 7, characterized in that: The mixing time in the mixer in step (2) is 80-120 min.