Active lubricating device for main speed reducer assembly of mining axle

Abstract

The invention relates to a mining axle main reducer assembly active lubricating device which comprises a main reducer assembly, the main reducer assembly is arranged on an axle housing, an oil tank is arranged on the axle housing, the main reducer assembly comprises a main reducer housing and an inter-axle differential mechanism, the inter-axle differential mechanism is arranged in the main reducer housing, an oil pump is arranged on the main reducer assembly, and the oil pump is connected with the oil tank. The oil pump is connected with the main speed reducer assembly, a plurality of lubricating oil pipes are arranged on the oil pump and comprise oil pumping pipes and oil spraying pipes, the oil pumping pipes are arranged below a main speed reducer shell, the oil pumping pipes are connected with lubricating oil in an axle housing and pump the lubricating oil in the axle housing below, the oil spraying pipes are communicated with the main speed reducer shell, and the oil pump is driven by the main speed reducer assembly. Lubricating oil is sprayed to the two bearings of the inter-axle differential mechanism through the oil spraying pipe, the oil is sprayed to the whole inter-axle differential mechanism, and the purpose of active lubrication is achieved.

Description

Technical Field

[0001] The invention relates to a lubricating device, in particular to an active lubricating device for a mining vehicle axle main reducer assembly. Background Art

[0002] At present, most of the existing mining vehicle axle main reducer assemblies adopt a passive lubrication structure, which realizes the lubrication of the gear meshing parts and bearings by stirring the lubricating oil through gear transmission. The main problem with this lubrication structure is that when the speed of the main reducer assembly is too low, the range of the gear stirring the lubricating oil is limited, which can easily cause lubrication failure due to insufficient lubricating oil.

[0003] However, mining vehicles operate at a low speed and in harsh operating conditions, so differentials are used more frequently. The inter-axle differential mainly relies on gear transmission to stir the lubricating oil and throw the oil to achieve lubrication. Mining vehicles operate at low speeds for a long time, which can easily lead to insufficient inter-axle differential lubricating oil, resulting in bearing failure, abnormal wear and ablation of planetary gears, axle gears, and cross shafts. Summary of the invention

[0004] The technical problem to be solved by the present invention is: an active lubrication device for a mining vehicle axle main reducer assembly, which solves the problem of lubrication failure caused by low-speed operation.

[0005] The technical solution to solve the above technical problems is: an active lubrication device for a mining vehicle axle main reducer assembly, including a main reducer assembly, which is arranged on a bridge housing, and lubricating oil is installed in the bridge housing. The main reducer assembly includes a main reducer housing and an inter-axle differential, and the inter-axle differential is arranged in the main reducer housing. An oil pump is provided on the main reducer assembly, and the oil pump is connected to the main reducer assembly. The oil pump is provided with a plurality of lubricating oil pipes, and the lubricating oil pipes include an oil extraction pipe and an oil injection pipe. The oil extraction pipe is connected to the lubricating oil in the bridge housing to extract the lubricating oil in the bridge housing, and the oil injection pipe is connected to the main reducer housing, and the oil pump is driven by the main reducer assembly, and the lubricating oil is sprayed on the two bearings of the inter-axle differential and the oil is sprayed on the entire inter-axle differential through the oil injection pipe. An oil filter is provided on the oil extraction pipe.

[0006] A further technical solution of the present invention is: the oil pump is installed on the main reducer housing through the bridge case cover, the oil pump is connected to the main reducer assembly through the driving bevel gear, and the oil pump is driven to rotate through the power chain of the main reducer assembly.

[0007] The main reducer assembly includes an input shaft, a driving cylindrical gear, a passive cylindrical gear and a driving bevel gear. The driving cylindrical gear is arranged on the input shaft and connected to the input shaft. The passive cylindrical gear is fixed on the driving bevel gear. The driving bevel gear is arranged on the reducer housing through a bearing. The passive cylindrical gear meshes with the driving cylindrical gear for transmission, thereby driving the driving bevel gear to rotate. The pin shaft of the oil pump is connected to the driving bevel gear, and the oil pump is driven through the driving bevel gear.

[0008] The oil injection pipe includes a first oil pipe and a second oil pipe. The oil pump outlet is connected to the first oil pipe and the second oil pipe respectively through a three-way interface. The lubricating oil is sprayed onto the input shaft bearing of the inter-axle differential through the first oil pipe, and the lubricating oil is sprayed onto the rear half shaft bearing of the inter-axle differential through the second oil pipe.

[0009] The second oil pipe sprays the lubricating oil on the rear half shaft bearing, and the lubricating oil flows through the rear half shaft bearing, rear half shaft gear, inter-axle planetary gear, inter-axle cross shaft and inter-axle differential case; the first oil pipe sprays the lubricating oil on the input shaft bearing, plane thrust bearing, active cylindrical gear and sliding meshing sleeve. The lubricating oil is drawn by the oil pump and sprayed on the entire inter-axle differential, thereby achieving the purpose of active lubrication.

[0010] Due to the adoption of the above technical solution, the active lubrication device of the mining vehicle axle main reducer assembly of the present invention has the following beneficial effects: 1. The present invention provides an oil pump on the main reduction assembly, and uses the active bevel gear to drive the oil pump to rotate and provide power. The oil pump is provided with multiple lubricating oil pipes to extract lubricating oil, and the lubricating oil is sprayed on the two bearings of the inter-axle differential through the oil pump and the oil pipes, and the lubricating oil is sprayed on the entire inter-axle differential to achieve the purpose of active lubrication. Reduce the inter-axle differential failure caused by insufficient lubrication and improve the overall performance and reliability of the drive axle.

[0011] 2. When the main reduction assembly rotates, it drives the oil pump to rotate, providing power to pump oil and spray the inter-axle differential for lubrication. Even if the mining vehicle is used at a low speed, active lubrication can be achieved through the device when the vehicle is running. The present invention improves the lubrication effect of the inter-axle differential assembly of the main reduction assembly of the mining vehicle axle, and solves the problem of lubrication failure caused by low-speed operation.

[0012] Next, the technical features of the active lubrication device of the main reducer assembly of a mining vehicle axle of the present invention will be further described in conjunction with the drawings and specific embodiments of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : A structural schematic diagram of an active lubrication device for a mining vehicle axle main reducer assembly.

[0014] In the above drawings, the descriptions of the reference numerals are as follows: 1-input shaft, 2-driving cylindrical gear, 3-three-way interface, 4-oil pump, 5-pin shaft, 6-bridge box cover, 7-driving bevel gear, 8-passive cylindrical gear, 9-oil extraction pipe, 10-screw plug, 11-reducer housing, 12-oil filter, 13-first oil pipe, 14-input shaft bearing, 15-sliding meshing sleeve, 16-plane thrust bearing, 17-second oil pipe, 18-inter-axle planetary gear, 19-inter-axle cross shaft, 20-inter-axle differential case, 21-half-axle bearing, 22-rear half-axle gear. DETAILED DESCRIPTION

[0015] An active lubrication device for a mining vehicle axle main reducer assembly includes a main reducer assembly, which is arranged on a bridge housing, and lubricating oil is installed in the bridge housing. The main reducer assembly includes a main reducer housing and an inter-axle differential, and the inter-axle differential is arranged in the main reducer housing. An oil pump is arranged on the main reducer assembly, and the oil pump is connected to the main reducer assembly. The oil pump is provided with a plurality of lubricating oil pipes, and the lubricating oil pipes include an oil extraction pipe and an oil injection pipe. The oil extraction pipe is arranged below the main reducer housing, and the oil extraction pipe is connected to the lubricating oil in the bridge housing to extract the lubricating oil in the lower bridge housing. The oil injection pipe is connected to the main reducer housing, and an oil pipe interface is opened on the reducer housing, and the oil injection pipe is connected to the oil pipe interface. The oil pump is driven to rotate by the main reducer assembly, and the lubricating oil is sprayed on the two bearings of the inter-axle differential and the oil is sprayed on the entire inter-axle differential through the oil injection pipe. The oil coming out of the oil pump will have pressure and can be sprayed out for lubrication. The oil pump 4 is installed on the main reducer housing through the bridge box cover 6. The oil pump 4 is connected to the driving gear of the main reducer assembly, and the oil pump 4 is driven to rotate through the power chain of the main reducer assembly without additional power. An oil filter 12 is provided on the oil extraction pipe.

[0016] The main reducer assembly includes an input shaft 1, a driving cylindrical gear 2, a passive cylindrical gear 8 and a driving bevel gear 7. The driving cylindrical gear 2 is arranged on the input shaft 1 and connected to the input shaft 1. The passive cylindrical gear 8 is fixed on the driving bevel gear 7. The driving bevel gear 7 is arranged on the reducer housing through a bearing. The passive cylindrical gear 8 is meshed with the driving cylindrical gear 2 for transmission, thereby driving the driving bevel gear 7 to rotate. The pin shaft 5 of the oil pump 4 is connected to the driving bevel gear 7, and the oil pump is driven through the driving bevel gear 7.

[0017] The oil injection pipe includes a first oil pipe 13 and a second oil pipe 17. The oil outlet of the oil pump 4 is connected to the first oil pipe 13 and the second oil pipe 17 respectively through the three-way interface 3. The lubricating oil is sprayed on the input shaft bearing 14 of the inter-axle differential through the first oil pipe 13, and the lubricating oil is sprayed on the rear half shaft bearing 21 of the inter-axle differential through the second oil pipe 17. The second oil pipe 17 sprays the lubricating oil on the rear half shaft bearing, and the lubricating oil flows through the rear half shaft bearing 21, the rear half shaft gear 22, the inter-axle planetary gear 18, the inter-axle cross shaft 19 and the inter-axle differential case 20. The first oil pipe 13 sprays the lubricating oil on the input shaft bearing 14, the plane thrust bearing 16, the driving cylindrical gear 2 and the sliding engagement sleeve 15. The lubricating oil is extracted by the oil pump and sprayed on the entire inter-axle differential, thereby achieving the purpose of active lubrication.

[0018] Specifically, an active lubrication device for a mining vehicle axle main reducer assembly is provided with an oil pump on the main reducer assembly, and active oil lubrication is performed through the oil pump. The main reducer assembly is provided with an input shaft 1, a driving cylindrical gear 2, a driving bevel gear 7, a driven cylindrical gear 8, a reducer housing 11, an input shaft bearing 14, a sliding engagement sleeve 15, a plane thrust bearing 16, an inter-axial planetary gear 18, an inter-axial cross shaft 19, an inter-axial differential housing 20, a half-shaft bearing 21 and a rear half-shaft gear 22. The input shaft 1 is connected to the driving cylindrical gear 2, the driving cylindrical gear 2 is meshed with the driven cylindrical gear 8 for transmission, and the driven cylindrical gear 8 is fixed on the driving bevel gear 7, thereby driving the driving bevel gear 7 to rotate. The oil pump 4 is installed on the bridge box cover 6, and the bridge box cover is connected to the reducer housing by bolts. The pin 5 of the oil pump 4 is connected to the driving bevel gear 7, so that the oil pump 4 is driven to rotate through the power chain to provide rotational power without the need for additional power.

[0019] When the oil pump 4 rotates and works, lubricating oil can be extracted through the oil extraction pipe 9. One end of the oil extraction pipe 9 is connected to the oil pump 4, and the other end is installed directly below the reducer housing 11 through the screw plug 10. The screw plug 10 is also equipped with an oil filter 12 for filtering the lubricating oil to prevent impurities from entering the oil pump 4 and damaging the oil pump 4. A three-way interface 3 is installed at the oil outlet of the oil pump 4, and the lubricating oil is sprayed on the two bearings of the inter-axle differential through the first oil pipe 13 and the second oil pipe 17. The first oil pipe 13 sprays the lubricating oil on the input shaft bearing 14, the plane thrust bearing 16, the driving cylindrical gear 2 and the sliding engagement sleeve 15; the second oil pipe 17 sprays the lubricating oil on the rear half shaft bearing, and the lubricating oil flows through the rear half shaft bearing 21, the rear half shaft gear 22, the inter-axle planetary gear 18, the inter-axle cross shaft 19 and the inter-axle differential case 20. The lubricating oil is extracted by the oil pump and sprayed on the entire inter-axle differential, thereby achieving the purpose of active lubrication.

Claims

1. An active lubrication device for a mining vehicle axle main reducer assembly, comprising a main reducer assembly, the main reducer assembly being arranged on a bridge housing, the bridge housing being filled with lubricating oil, the main reducer assembly comprising a main reducer housing and an inter-axle differential, the inter-axle differential being arranged in the main reducer housing, characterized in that: An oil pump is provided on the main reducer assembly, and the oil pump is connected to the main reducer assembly. A plurality of lubricating oil pipes are provided on the oil pump, and the lubricating oil pipes include an oil extraction pipe and an oil injection pipe. The oil extraction pipe is connected to the lubricating oil in the axle housing to extract the lubricating oil in the axle housing. The oil injection pipe is connected to the main reducer housing, and the oil pump is driven by the main reducer assembly to spray the lubricating oil on the two bearings of the inter-axle differential and on the entire inter-axle differential through the oil injection pipe.

2. The active lubrication device for the main reducer assembly of a mining vehicle axle according to claim 1 is characterized in that: The oil pump is installed on the main reducer housing through the bridge case cover. The oil pump is connected to the main reducer assembly through the active bevel gear, and the oil pump is driven to rotate through the power chain of the main reducer assembly.

3. The active lubrication device for the main reducer assembly of a mining vehicle axle according to claim 1 is characterized in that: The main reducer assembly includes an input shaft, a driving cylindrical gear, a passive cylindrical gear and a driving bevel gear. The driving cylindrical gear is arranged on the input shaft and connected to the input shaft. The passive cylindrical gear is fixed on the driving bevel gear. The driving bevel gear is arranged on the reducer housing through a bearing. The passive cylindrical gear meshes with the driving cylindrical gear for transmission, thereby driving the driving bevel gear to rotate. The pin shaft of the oil pump is connected to the driving bevel gear, and the oil pump is driven through the driving bevel gear.

4. The active lubrication device for the main reducer assembly of a mining vehicle axle according to claim 1 is characterized in that: The oil injection pipe includes a first oil pipe and a second oil pipe. The oil pump outlet is connected to the first oil pipe and the second oil pipe respectively through a three-way interface. The lubricating oil is sprayed onto the input shaft bearing of the inter-axle differential through the first oil pipe, and the lubricating oil is sprayed onto the rear half shaft bearing of the inter-axle differential through the second oil pipe.

5. The active lubrication device for the main reducer assembly of a mining vehicle axle according to claim 4 is characterized in that: The second oil pipe sprays the lubricating oil on the rear half shaft bearing, and the lubricating oil flows through the rear half shaft bearing, the rear half shaft gear, the inter-axle planetary gear, the inter-axle cross shaft and the inter-axle differential case; the first oil pipe sprays the lubricating oil on the input shaft bearing, the plane thrust bearing, the driving cylindrical gear and the sliding meshing sleeve.

6. The active lubrication device for the main reducer assembly of a mining vehicle axle according to claim 1 is characterized in that: An oil filter is provided on the oil extraction pipe.

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