Main reducer assembly structure with two-stage filtration and oil pressure alarm device

Abstract

The invention discloses a main reducer assembly structure with a two-stage filtration and oil pressure alarm device, which is characterized by comprising a gear pump, a low-pressure oil pipe with a filter screen at the end part, a straight pipe joint, an oil filter, a high-pressure oil pipe, an oil pressure sensor, a gap bridge box cover, an input shaft, a cross shaft and an oil filter protective cover, a gear pump, a low-pressure oil pipe with a filter screen at the end part, a straight-through pipe joint, an oil pressure sensor, an input shaft and an oil filter protective cover are fixed on the gap bridge box cover; an oil filter is fixed on the straight pipe joint; one end of the high-pressure oil pipe is fixed on the straight pipe joint, and the other end is fixed on the gap bridge box cover; a cross shaft is arranged on the input shaft; an inter-axle differential, a driving cylindrical gear, an adjusting gasket and an input shaft front bearing can be effectively lubricated, and the service life of each part of a main speed reducer assembly is prolonged; the oil pressure sensor automatically monitors the pressure of lubricating oil in the oil duct; the oil filter protective cover can effectively prevent the oil filter from being collided, and the service life of the oil filter is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile axles, and in particular to a main reducer assembly structure with a double-stage filter and an oil pressure alarm device. Background Art

[0002] Currently, all mid-axle final reducer structures on the market basically do not have active lubrication structures, and basically do not have two-stage filtration and oil pressure alarm devices. This is especially true in the off-road mining vehicle market. In some muddy and steep slope conditions, the final reducer assembly operates at low speed and high torque. Traditional splash lubrication is difficult to meet the lubrication requirements of the inter-axle differential, causing dry grinding of the inter-axle differential and adjacent components, leading to damage to internal components of the final reducer assembly and affecting the service life of the entire axle assembly. Summary of the Invention

[0003] In view of the defects or shortcomings of the existing technology, a main reducer assembly structure with a double-stage filter and an oil pressure alarm device is provided.

[0004] The technical solution provided by the present invention is: a main reducer assembly structure with a double-stage filtration and oil pressure alarm device, which is special in that it includes a gear pump, a low-pressure oil pipe with a filter at the end, a straight pipe joint, an oil filter, a high-pressure oil pipe, an oil pressure sensor, a bridge box cover, an input shaft, a cross shaft, and an oil filter protective cover; the gear pump, the low-pressure oil pipe with a filter at the end, the straight pipe joint, the oil pressure sensor, the input shaft, and the oil filter protective cover are fixed on the bridge box cover; the oil filter is fixed on the straight pipe joint; one end of the high-pressure oil pipe is fixed on the straight pipe joint, and the other end is fixed on the bridge box cover; a cross shaft is provided on the input shaft; the oil inlet of the gear pump is connected to the oil inlet hole of the bridge box cover, and the lower part of the gear pump is provided with a connecting shaft which cooperates with the groove on the active bevel gear; the bridge box cover has an internal oil channel, which is respectively connected to the oil outlet hole of the gear pump, the oil filter, and the oil receiving groove of the input shaft.

[0005] Furthermore, the low-pressure oil pipe with a filter at the end is fixed to the bridge box cover through hollow bolts and sealing washers, and the hollow bolts correspond to the positions of the bridge box cover and the oil inlet of the gear pump.

[0006] Furthermore, one end of the straight pipe joint has internal and external threads, and the other end has external threads, and the straight pipe joint is fixed on the bridge box cover through the end with internal and external threads.

[0007] Furthermore, the oil filter is fixed to the end of the straight-through pipe joint with only an external thread, and the bottom surface is in contact and sealed with the bridge box cover.

[0008] Furthermore, one end of the high-pressure oil pipe is fixed to the internal thread of the straight-through pipe joint through a hollow bolt and a sealing washer, and the other end is fixed to the bridge box cover through a hollow bolt and a sealing washer, and is connected to the oil channel of the bridge box cover.

[0009] Furthermore, the end of the oil pressure sensor is threaded, fixed on the bridge box cover and connected to the oil channel.

[0010] Furthermore, the input shaft has an oil receiving groove and an oil channel hole, and a slotted cylindrical plug is provided at the shaft end, which is fixed to the bridge box cover through the input shaft front bearing, the inter-axle differential, and the adjusting nut.

[0011] Furthermore, the cross shaft is provided with an oil receiving groove and an oil outlet hole, and a slotted cylindrical screw plug is provided at the shaft end, which is connected to the input shaft through a spline.

[0012] Furthermore, the oil filter protective cover is fixed to the bridge box cover by bolts.

[0013] The beneficial effects of the present invention are as follows: 1. The lubricating oil in the main reducer housing can be filtered through the filter screen and the oil filter in two stages, and the clean lubricating oil can be finally introduced into the inter-axle differential, the driving cylindrical gear, the adjusting gasket, and the input shaft front bearing position, thereby effectively lubricating the inter-axle differential, the driving cylindrical gear, the adjusting gasket, and the input shaft front bearing, thereby improving the service life of various components of the main reducer assembly; 2. The oil pressure sensor automatically monitors the pressure of the lubricating oil in the oil channel. When the filter screen or the oil filter is blocked or the gear pump is damaged, the oil pressure in the oil channel will drop, triggering the oil pressure sensor to send an alarm signal; 3. The oil filter protective cover can effectively prevent the oil filter from being bumped during transportation, loading, and use, thereby improving the service life of the oil filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the present invention; Figure 2 It is a left side view of the present invention; Figure 3 It is an AA cross-sectional view of the present invention; Figure 4 It is a BB cross-sectional view of the present invention; Figure 5 It is a CC cross-sectional view of the present invention; Figure 6 It is a DD cross-sectional view of the present invention; Figure 7 EE is a cross-sectional view of the present invention; In the figure: 1. Gear pump, 2. Low-pressure oil pipe with filter at the end, 3. Straight pipe joint, 4. Oil filter, 5. High-pressure oil pipe, 6. Oil pressure sensor, 7. Bridge box cover, 8. Input shaft, 9. Cross shaft, 10. Oil filter protective cover, 11. Reducer housing, 12. Inter-axle differential, 13. Driving cylindrical gear, 14. Adjusting gasket, 15. Input shaft front bearing, 16. Driving bevel gear, 17. Hollow bolt, 18. Sealing washer, 19. Adjusting nut, 20. Slotted cylindrical plug. DETAILED DESCRIPTION

[0015] For better understanding and implementation, the present invention is further described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 、 2As shown in Figures 3, 4, 5, 6 and 7, the present invention provides a main reducer assembly structure with a double-stage filtration and oil pressure alarm device, including a gear pump 1, a low-pressure oil pipe 2 with a filter screen at the end, a straight pipe joint 3, an oil filter 4, a high-pressure oil pipe 5, an oil pressure sensor 6, a bridge box cover 7, an input shaft 8, a cross shaft 9 and an oil filter protective cover 10; the gear pump 1 is fixed to the bridge box cover 7 by bolts, the oil inlet of the gear pump 1 is connected with the oil inlet hole of the bridge box cover 7, the oil outlet of the gear pump 1 is connected with the oil channel on the inner wall of the bridge box cover 7, the lower part of the gear pump 1 is provided with a connecting shaft which cooperates with the groove on the active bevel gear 16. When the active bevel gear 16 rotates, it drives the gear pump 1 to rotate, generates an oil suction action and delivers the pressurized lubricating oil to the oil filter through the pressurization effect of the gear pump 1. 4; the low-pressure oil pipe 2 with a filter at the end is fixed to the bridge box cover 7 by a hollow bolt 17 and a sealing gasket 18, and the hollow bolt 17 corresponds to the oil inlet position of the bridge box cover 7 and the gear pump 1, and the filter at the end can filter out larger iron filings, residues and other impurities in the lubricating oil; the straight pipe joint 3 has internal and external threads at one end and external threads at the other end. The straight pipe joint 3 is fixed to the bridge box cover 7 through the end with internal and external threads to connect the oil filter 4 and the high-pressure oil pipe 5; the oil filter 4 is fixed to the end of the straight pipe joint 3 with only external threads, and the bottom surface is in contact and sealed with the bridge box cover 7. The internal oil filter structure can filter the finer iron foam produced by wear, and the clean lubricating oil can be transported along the high-pressure oil pipe 5 to the internal oil channel of the bridge box cover 7 and enter Input shaft 8, the end of input shaft 8 is provided with a slotted cylindrical plug 20 to seal the shaft end, so that the lubricating oil enters the active cylindrical gear 13, the inter-axle differential 12, the adjusting gasket 14, and the input shaft front bearing 15 along the oil channel hole of input shaft 8 to lubricate them; the high-pressure oil pipe 5 is fixed to the internal thread of the straight-through pipe joint 3 at one end through a hollow bolt 17 and a sealing washer 18, and is fixed to the bridge box cover 7 at the other end through a hollow bolt 17 and a sealing washer 18, and is connected to the oil channel of the bridge box cover 7; the end of the oil pressure sensor 6 is threaded, fixed to the bridge box cover 7 and connected to the oil channel, the oil pressure sensor 6 automatically monitors the pressure of the lubricating oil in the oil channel and initially sets the alarm pressure value. If the oil pressure value is higher than the set pressure value, no alarm will be given. When the oil pressure value is lower than the set pressure value, no alarm will be given. force value, the sensor will send out an alarm signal; the bridge box cover 7 is cast with an internal oil channel, which is respectively connected to the oil outlet of the gear pump 1, the oil filter 4, and the oil groove of the input shaft 8, and is fixed to the reducer housing 11 by bolts; the input shaft 8 has an oil groove and an oil channel hole, and the shaft end of the input shaft 8 is provided with a slotted cylindrical plug 20 to seal the shaft end, and is fixed to the bridge box cover 7 through the input shaft front bearing 15, the inter-axle differential 12, and the adjusting nut 19; the cross shaft 9 has an oil groove and an oil outlet hole, which is connected to the input shaft 8 through a spline, and the shaft end of the cross shaft 9 is provided with a slotted cylindrical plug 20 to seal the shaft end, so that the lubricating oil enters the inter-axle differential 12 along the oil outlet hole of the cross shaft 9 to lubricate it; the oil filter protective cover 10 is fixed to the bridge box cover 7 by bolts.

[0017] The present invention relates to a main reducer assembly structure with a double-stage filtration and oil pressure alarm device. When the car is running, the active bevel gear 16 rotates, driving the gear pump 1 to work, thereby inputting the lubricating oil inside the reducer housing 11 into the gear pump 1 through the low-pressure oil pipe 2 with a filter at the end. The filter at the end filters out larger impurities such as iron filings and residues in the lubricating oil. After being pressurized by the gear pump 1, the oil enters the oil filter 4 through the oil channel inside the bridge box cover 7. The oil filter structure inside the oil filter 4 can filter out finer iron foam produced by wear and tear, and the clean lubricating oil is transported along the high-pressure oil pipe 5 to the oil inside the bridge box cover 7. The oil passes through the oil channel and enters the input shaft 8. The outer diameter of the input shaft 8 and the inner hole of the bridge box cover 7 are clearance-matched. Part of the lubricating oil enters the active cylindrical gear 13, the inter-axle differential 12, and the adjusting gasket 14 along the oil channel hole of the input shaft 8, and the other part enters the input shaft front bearing 15 along the gap between the input shaft 8 and the bridge box cover 7, thereby lubricating it. The oil pressure sensor 6 is fixed on the bridge box cover 7 and connected to the oil channel. It automatically monitors the pressure of the lubricating oil in the oil channel and initially sets the alarm pressure value. If the oil pressure value is higher than the set pressure value, no alarm will be given. When the oil pressure value is lower than the set pressure value, the sensor will send out an alarm signal.

[0018] Figure 7 The direction indicated by the arrow in the middle represents the flow direction and position of the lubricating oil when the technical solution of the present invention is working.

[0019] The above specific embodiments are further detailed descriptions of the present invention, and the specific embodiments of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and the above structures should be considered to fall within the scope of protection of the present invention.

Claims

1. A main reducer assembly structure with a double-stage filter and oil pressure alarm device, characterized in that: It includes a gear pump, a low-pressure oil pipe with a filter at the end, a straight pipe joint, an oil filter, a high-pressure oil pipe, an oil pressure sensor, a bridge box cover, an input shaft, a cross shaft, and an oil filter protective cover; the gear pump, the low-pressure oil pipe with a filter at the end, the straight pipe joint, the oil pressure sensor, the input shaft, and the oil filter protective cover are fixed on the bridge box cover; the oil filter is fixed on the straight pipe joint; one end of the high-pressure oil pipe is fixed on the straight pipe joint, and the other end is fixed on the bridge box cover; a cross shaft is provided on the input shaft; the oil inlet of the gear pump is connected to the oil inlet hole of the bridge box cover, and the lower part of the gear pump is provided with a connecting shaft which cooperates with the groove on the active bevel gear; the bridge box cover has an internal oil channel, which is respectively connected to the oil outlet hole of the gear pump, the oil filter and the oil receiving groove of the input shaft.

2. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1, characterized in that: The low-pressure oil pipe with a filter screen at the end is fixed on the bridge box cover through a hollow bolt and a sealing gasket, and the hollow bolt corresponds to the bridge box cover and the oil inlet of the gear pump.

3. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1 is characterized in that: One end of the straight pipe joint is provided with internal and external threads, and the other end is provided with external threads. The straight pipe joint is fixed on the bridge box cover through the end with internal and external threads.

4. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1 is characterized in that: The oil filter is fixed to one end of the straight-through pipe joint which has only external threads, and the bottom surface of the oil filter is in contact and sealed with the bridge box cover.

5. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1 is characterized in that: One end of the high-pressure oil pipe is fixed to the internal thread of the straight-through pipe joint through a hollow bolt and a sealing washer, and the other end is fixed to the bridge box cover through a hollow bolt and a sealing washer, and is connected to the oil channel of the bridge box cover.

6. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1, characterized in that: The end of the oil pressure sensor is provided with a thread, fixed on the bridge box cover and connected to the oil channel.

7. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1 is characterized in that: The input shaft is provided with an oil receiving groove and an oil channel hole, and a slotted cylindrical screw plug is provided at the shaft end, which is fixed on the bridge box cover through the input shaft front bearing, the inter-axle differential and the adjusting nut.

8. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1, characterized in that: The cross shaft is provided with an oil receiving groove and an oil outlet hole, and a slotted cylindrical screw plug is provided at the shaft end and is connected to the input shaft through a spline.

9. The main reducer assembly structure with dual-stage filtration and oil pressure alarm device according to claim 1, characterized in that: The oil filter protective cover is fixed on the bridge box cover by bolts.

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