CN204493670U - The main gearbox assembly of oil lubrication system forced by band - Google Patents

Abstract

A main reducer assembly with a forced oil lubrication system, relating to a main reducer assembly, including a main reducer, an inter-axle differential, a main reducer housing, an input shaft, a bearing seat, and a forced oil lubrication system, The forced oil lubrication system includes the oil inlet and outlet passages of the main reducer case, the oil pump and its oil inlet and outlet passages, the oil inlet and outlet passages of the bearing seat, and the input shaft oil passage; The oil inlet passage of the oil pump communicates with the oil outlet passage of the bearing seat through the pressure relief spring, and the oil outlet passage of the bearing seat communicates with the oil tank; the oil inlet passage of the oil pump is connected with the filter at the same time, and the oil outlet passage of the oil filter and the final drive case , the oil pump oil passage, and the input shaft oil passage are connected in sequence, and the input shaft oil passage is respectively connected to the inter-shaft half-shaft gear, the inter-shaft differential shell and the inter-shaft planetary gear. The utility model can prolong the working life of the main reducer assembly, reduce the failure rate of the axle, is convenient for after-sales maintenance, and is easy to popularize and use.

Description

Final drive assembly with forced oil lubrication system

technical field

The utility model relates to a main reducer assembly, in particular to a main reducer assembly with a forced oil lubrication system.

Background technique

For existing heavy-duty axles, when the main reducer assembly is running, the inter-axle differential will be worn early due to poor lubrication, resulting in early damage to the inter-axle differential, and the life of the main reducer assembly will be seriously affected . In addition, due to the poor cleanliness of the lubricating gear oil of the main reducer, the components of the main reducer have been in a harsh working environment for a long time, the maintenance mileage of the main reducer assembly has been shortened, and the failure rate of the heavy-duty axle assembly raised.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a main reducer assembly with a forced oil lubrication system to solve the problems in the prior art that the above-mentioned inter-axle differential is damaged in advance and the life of the main reducer assembly is seriously affected , The shortcoming of the maintenance mileage reduction of the final drive assembly and the increase of the failure rate of the heavy-duty axle assembly.

The technical solution to solve the above technical problems is: a main reducer assembly with a forced oil lubrication system, including the main reducer, the inter-axle differential, the main reducer housing, the input shaft, the bearing seat, and the inter-shaft The differential includes inter-axle half shaft gears, inter-axle differential housings and inter-axle planetary gears, and also includes a forced oil lubrication system. The forced oil lubrication system includes an oil filter, an oil inlet passage for the main Oil channel, oil pump, oil pump inlet channel, oil pump oil outlet channel, oil filter, bearing housing oil inlet channel, bearing housing oil outlet channel, input shaft oil channel;

The main reducer casing oil inlet passage and the main reducer casing oil outlet passage are respectively arranged on the main reducer casing, the bearing seat oil inlet passage and the bearing seat oil outlet passage are respectively arranged on the bearing seat, and the The oil inlet passage of the oil pump and the oil outlet passage of the oil pump are respectively arranged on the oil pump, and the said input shaft oil passage is arranged on the input shaft; Between the oil pump and the bearing seat, one end of the pressure relief spring is connected to the input end of the oil outlet channel of the bearing seat, and the other end is connected to the output end of the oil inlet channel of the oil pump, and the oil filter is installed on the outer wall of the main reducer housing;

The input end of the oil inlet passage of the final reducer housing is provided with an oil inlet hole, and an oil filter is arranged on the oil inlet hole; the output end of the oil inlet passage of the final reducer casing communicates with the input end of the oil inlet passage of the bearing seat, and the bearing The output end of the oil inlet passage of the seat communicates with the input end of the oil inlet passage of the oil pump, the output end of the oil inlet passage of the oil pump communicates with the input end of the oil outlet passage of the bearing seat through the pressure relief spring, and the output end of the oil outlet passage of the bearing seat communicates with the oil tank; the oil inlet passage of the oil pump b The output end is connected to the input end of the filter at the same time, and the output end of the oil filter is respectively connected to the input end of the oil outlet channel of the main reducer case; The output end of the oil outlet passage of the oil pump is connected with the input shaft oil passage, and the input shaft oil passage is respectively connected with the inter-shaft side gear, the inter-shaft differential housing and the inter-shaft planetary gear.

Due to the adoption of the above structure, compared with the prior art, the main reducer assembly with forced oil lubrication system of the utility model has the following beneficial effects:

1. It can avoid the early damage of the inter-axle differential and prolong the service life of the main reducer assembly:

Because the utility model includes a forced oil lubrication system, the forced oil lubrication system is that the gear oil is drawn up, enters from the oil inlet hole of the oil inlet channel of the main reducer shell, and passes through the inside of the main reducer shell after being filtered by the oil filter. The oil inlet channel and the oil inlet channel inside the bearing seat reach the oil pump, and after the rotation of the oil pump, the flow is shunted out. When the oil pressure is too high, the gear oil lifts up the pressure relief spring assembly, and the gear oil flows out through the oil outlet inside the bearing seat. The channel flows back to the oil tank; when the oil pressure is normal, the gear oil flows into the oil filter for filtration, and the filtered gear oil passes through the oil outlet channel inside the final reducer shell and the oil outlet channel inside the oil pump, and is pressurized by the oil pump. Finally, it flows into the oil channel of the input shaft, and then a part of the gear oil is diverted to the interior of the inter-axle differential to lubricate the inter-axle planetary gear and the inter-axle differential case. After lubrication, it flows back to the oil tank, and the other part of the gear oil is diverted to the inter-axle half shaft gear At the place, lubricate the half shaft gear between the shafts, and finally flow back to the oil tank. Therefore, the utility model can circulate the gear oil into the inter-axle differential through the forced oil lubrication system to lubricate the inter-axle differential assembly, so that the problem of poor lubrication of the inter-axle differential can be solved, and the inter-axle differential The working environment of the parts is improved, avoiding the premature damage of the inter-axle differential, prolonging the working life of the main reducer assembly and improving product quality.

2. Extend the maintenance mileage of the final drive assembly and reduce the failure rate of the heavy-duty axle assembly:

Since the forced oil lubrication system of the utility model adopts the oil filter screen installed in the oil inlet hole, and the oil filter communicated with the main reducer shell is installed on the outer wall of the main reducer shell, the cleanliness of the gear lubricating oil can be improved, The working environment of the components of the main reducer assembly has been further improved, and the maintenance mileage of the main reducer assembly has increased to 100,000 kilometers.

3. Easy after-sales maintenance:

Since the oil filter of the utility model is an external structure, the replacement and cleaning of the filter are very convenient, and the after-sales maintenance convenience of the final reducer assembly is enhanced.

Below, the technical features of the final drive assembly with a forced oil lubrication system of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

Description of drawings

Figure 1-2: Schematic diagram of the structure of the main reducer assembly with forced oil lubrication system of the utility model,

Figure 1: Front view, Figure 2: A-direction rotation view of Figure 1;

Figure 3: Schematic diagram of the structure of an interaxle differential with an oil pump,

Figure 4: Schematic of the forced oil lubrication system.

In the above-mentioned accompanying drawings, each label is explained as follows:

1-oil filter, 2-main reducer housing, 201-main reducer housing oil inlet channel, 202-main reducer housing oil outlet channel,

3-Pressure relief spring assembly, 4-Oil pump, 401-Oil pump inlet passage, 402-Oil pump outlet passage; 5-Input shaft, 501-Input shaft oil passage, 6-Planetary gear between shafts; 7-Half between shafts Shaft gear; 8-oil filter; 9-bearing seat, 901-bearing seat oil inlet channel, 902-bearing seat oil outlet channel, 10-oil tank, 11-gear oil.

Detailed ways

Embodiment one:

A main reducer assembly with a forced oil lubrication system, including a main reducer, an inter-axle differential, a main reducer housing 2, an input shaft 5, and a bearing seat 9, and the inter-axle differential includes an inter-axle The side gear 7, the inter-shaft differential case and the inter-shaft planetary gear 6 also include a forced oil lubrication system, which includes an oil filter 1, an oil inlet channel 201 for the final drive housing, and an oil outlet channel for the final drive housing 202, oil pump 4, oil pump oil inlet channel 401, oil pump oil outlet channel 402, oil filter 8, bearing housing oil inlet channel 901, bearing housing oil outlet channel 902, input shaft oil channel 501;

The main reducer casing oil channel 201 and the main reducer casing oil channel 202 are respectively arranged on the main reducer casing 2, and the bearing seat oil inlet channel 901 and the bearing seat oil outlet channel 902 are respectively arranged on the bearing seat 9 Above, the oil pump oil inlet channel b401 and the oil pump oil outlet channel 402 are respectively set on the oil pump 4, and the input shaft oil channel 501 is set on the input shaft 5; On the input shaft 5, the pressure relief spring 3 is installed between the oil pump 4 and the bearing housing 9, one end of the pressure relief spring 3 is connected to the input end of the oil outlet passage 902 of the bearing housing, and the other end is connected to the output of the oil inlet passage 401 of the oil pump end, the oil filter 8 is installed on the outer wall of the main reducer housing 2;

The input end of the oil inlet channel 201 of the main reducer housing is provided with an oil inlet hole, and the oil inlet hole is provided with an oil filter 1; The output end of the oil inlet passage 901 of the bearing seat communicates with the input end of the oil inlet passage 401 of the oil pump, the output end of the oil inlet passage 401 of the oil pump communicates with the input end of the oil outlet passage 902 of the bearing seat through the pressure relief spring 3, and the oil outlet passage 902 of the bearing seat communicates with the input end of the oil outlet passage 902 of the bearing seat. The output end communicates with the oil tank 10; the output end of the oil inlet passage 401 of the oil pump is connected with the input end of the filter 8 at the same time, and the output end of the oil filter 8 is respectively connected with the input end of the oil outlet passage 202 of the main reducer housing; The output end of the oil outlet channel 202 of the casing is connected with the input end of the oil pump oil outlet channel 402, and the output end of the oil pump oil outlet channel 402 is connected with the input shaft oil channel 501, and the input shaft oil channel 501 is connected with the inter-shaft halves respectively. Shaft gear 7, inter-axle differential housing and inter-axle planetary gear 6.

The working principle of the utility model is:

The gear oil 11 is pumped up and enters from the oil inlet hole of the oil inlet channel 201 of the main reducer housing, and after being filtered by the oil filter 1, it passes through the oil inlet channel 201 inside the main reducer housing and the oil inlet channel 901 inside the bearing seat , reaches the oil inlet channel 401 of the oil pump, and is diverted out after the rotation of the oil pump 4. When the oil pressure is too high, the gear oil 11 lifts up the pressure relief spring 3, and the gear oil passes through the oil outlet channel 902 inside the bearing seat, and finally flows back to the oil tank 10. When the oil pressure is normal, the gear oil 11 flows into the oil filter 8 for filtering, and the filtered gear oil passes through the oil outlet channel 202 inside the main reducer housing and the oil pump oil outlet channel 402, and is pressurized by the oil pump , finally flows into the input shaft oil passage 501, and then a part of the gear oil is diverted to the interior of the inter-axle differential to lubricate the inter-axle planetary gear 6 and the inter-axle differential housing. After lubrication, it flows back to the oil tank 10, and the other part of the gear oil is diverted to the shaft At 7 places between the half shaft gears, lubricate the half shaft gears between the shafts, and finally flow back to the oil tank 10.

Claims (1)

1. the main gearbox assembly with forcing oil lubrication system, comprise main reducing gear, interaxial differential, final drive casing (2), input shaft (5), bearing support (9), described interaxial differential comprises between centers differential gear (7), between centers difference shell and between centers planetary pinion (6), it is characterized in that: also comprise pressure oil lubrication system, this pressure oil lubrication system comprises oil filter screen (1), final drive casing oil inlet passage (201), final drive casing oil discharge passage (202), oil pump (4), oil pump oil inlet passage (401), oil pump oil discharge passage (402), oil filter (8), bearing support oil inlet passage (901), bearing support oil discharge passage (902), input shafting oil passage (501),

Described final drive casing oil inlet passage (201), final drive casing oil discharge passage (202) are located on final drive casing (2) respectively, described bearing support oil inlet passage (901), bearing support oil discharge passage (902) are located on bearing support (9) respectively, described oil pump oil inlet passage (401), oil pump oil discharge passage (402) are located on oil pump (4) respectively, and described input shafting oil passage (501) is located on input shaft (5); Described oil pump (4) is arranged on the input shaft (5) of bearing support (9) below, pressure release spring (3) is arranged between oil pump (4) and bearing support (9), the input end of this pressure release spring (3) one end coupling shaft bearing oil discharge passage (902), the other end connects the output terminal of oil pump oil inlet passage (401), and oil filter (8) is arranged on final drive casing (2) outer wall;

Described final drive casing oil inlet passage (201) input end is provided with oil inlet hole, and this oil inlet hole is provided with oil filter screen (1); Final drive casing oil inlet passage (201) output terminal communicates with bearing support oil inlet passage (901) input end, bearing support oil inlet passage (901) output terminal communicates with oil pump oil inlet passage (401) input end, oil pump oil inlet passage (401) output terminal is communicated with bearing support oil discharge passage (902) input end by pressure release spring (3), and bearing support oil discharge passage (902) output terminal communicates with fuel tank (10); Oil pump oil inlet passage (401) output terminal is connected with the input end of filter cleaner (8) simultaneously, and the output terminal of oil filter (8) is communicated with the input end of final drive casing oil discharge passage (202) respectively; The output terminal of final drive casing oil discharge passage (202) is communicated with oil pump oil discharge passage (402) input end, oil pump oil discharge passage (402) output terminal is communicated with input shaft oil duct (501), and described input shaft oil duct (501) is communicated with described between centers differential gear (7), between centers difference shell and between centers planetary pinion (6) respectively.