CN204647250U - A kind of three countershaft transmission forced lubricating systems - Google Patents

Abstract

The utility model is a forced lubrication system for a three-intermediate shaft transmission, comprising: a transmission, a gear oil pump and a diverter valve installed on the upper part of the rear end cover of the transmission, the transmission includes a main shaft and three auxiliary shafts, and the third auxiliary shaft is partially immersed below the oil surface , the first and second countershafts are far away from the oil surface; the bottom of the transmission housing is equipped with an oil suction port; the oil pump is driven by the constant rotation countershaft located in the transmission, and the oil suction port pumps the lubricating oil into the diverter valve through the external oil pipe At the inlet, the diverter valve divides the oil circuit into several branches and communicates with the lubricating oil pipe inside the transmission, and the lubricating oil pipe has a plurality of oil holes. The utility model is used to improve the lubricating conditions of the high-torque three-intermediate shaft transmission, and is mainly used for other large-scale mechanical transmissions with many parts away from the oil surface, and splash lubrication can not achieve good lubrication effect, so as to improve the service life and working performance of the transmission.

Description

A Kind of Forced Lubrication System of Three Countershaft Transmission

technical field

The utility model belongs to the technical field of transmissions, in particular to a forced lubricating system for a transmission with three intermediate shafts.

Background technique

Splash lubrication is mostly used in traditional mechanical transmissions, and a few large-scale ones have simple auxiliary lubrication devices. For large transmissions with multiple parts far away from the oil surface, if the traditional lubrication method is used, gears and bearings that are far away from the oil surface The rotating parts are not well lubricated, which affects the life and performance of the transmission. Especially for the high-torque three-countershaft transmission of mining vehicles, the lubrication problem that two countershaft assemblies are located above the oil level and the working conditions are harsh needs to be solved.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a three-countershaft transmission forced lubrication system, and develops a high-torque three-countershaft transmission for mining vehicles, and designs a set of forced lubrication system for this purpose. Improve the lubrication conditions of the high-torque triple countershaft transmission, and increase the service life and performance of the transmission.

The utility model is realized through the following technical solutions:

A forced lubrication system for a three-countershaft transmission, including: a transmission, a gear oil pump and a diverter valve installed on the upper part of the rear end cover of the transmission, the transmission includes a main shaft and three auxiliary shafts, the third auxiliary shaft is partly immersed in the oil surface, Both the countershaft and the second countershaft are far away from the oil surface; an oil suction port is installed at the bottom of the transmission case; the oil pump is driven by the first countershaft which is set in the transmission and the lubricating oil is pumped in through the external oil pipe through the oil suction port At the inlet of the diverter valve, the diverter valve divides the oil circuit into several branches and communicates with the lubricating oil pipe inside the transmission, and the lubricating oil pipe is provided with a plurality of oil holes.

The diverter valve divides the oil circuit into four channels to communicate with the four lubricating oil pipes inside the transmission through ports B, C, D and E respectively, and the ports B, C, D and E are all arranged on the rear end cover of the transmission.

Both ends of the lubricating oil pipe are respectively supported on the transmission rear end cover and the transmission housing.

The B port is connected to the first lubricating oil pipe, and the oil hole on the first lubricating oil pipe is set at the bearing and the first reverse gear pair; the D port is connected to the fourth lubricating oil pipe, and the oil hole on the fourth lubricating oil pipe Set at the bearing and the second reverse gear pair; the E port is connected to the second lubricating oil pipe, and the oil hole on the second lubricating oil pipe is set at the first gear pair between the main shaft and the first countershaft, and the second The lubricating oil pipe is in communication with the oil channel at the front end of the transmission housing, the oil channel on the front end cover of the transmission, the oil chamber, and the oil channel on the rear end cover of the transmission; the C port is connected to the third lubricating oil tube, and the oil hole on the third lubricating oil tube is set At the second gear pair between the main shaft and the second countershaft, it is connected to the second lubricating oil pipe in the same manner and arranged symmetrically with the second lubricating oil pipe.

The oil pipes connecting the diverter valve with ports B, C, D, and E are all arranged outside the transmission.

A strainer is installed at the oil suction port.

The above-mentioned oil suction port is arranged at a position below the oil level at the bottom of the transmission housing.

The oil holes are distributed in a divergent shape on the lubricating oil pipe.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model makes full use of the oil at the bottom of the transmission through the oil suction port, uses the diverter valve to set the number and position of the oil circuit according to actual needs, and guides the lubricating oil to all parts that need to be lubricated through the inner and outer oil pipes, so that the transmission can be fully lubricated All rotating parts improve transmission life and performance. The utility model is used to improve the lubricating condition of a large-torque three-intermediate shaft transmission, and is mainly used for other large-scale mechanical transmissions with many parts far away from the oil surface, and splash lubrication cannot achieve a good lubrication effect, so as to improve the service life and working performance of the transmission.

Further, heat dissipation of the transmission can be assisted. Through multiple oil pipes arranged outside the transmission, the heat exchange between the inside of the transmission and the external environment is enhanced, which is beneficial to the heat dissipation of the transmission and ensures the performance of the oil, thereby improving the working conditions of bearings, gears and other components.

Furthermore, the oil holes are distributed in a divergent shape on the lubricating oil pipe. According to the position and angle of the parts to be lubricated, there are many small holes on the lubricating oil pipe, which can realize the splashing of lubricating oil to bearings, gears and other parts that need to be lubricated. The structure is simple and works well.

Description of drawings

Figure 1 Schematic diagram of the transmission lubrication system.

Figure 2 is a schematic top view of the internal lubrication system of the transmission.

Among them, 1. Oil suction port, 2. Transmission rear end cover, 3. External oil pipe, 4. Gear oil pump, 5. Diverter valve, 6. First countershaft, 7. Second countershaft, 9. Third countershaft , 8, the main shaft, 10, the upper oil passage, 11, the first reverse gear pair, 12, 14, 19, 21 are respectively the first, second, third, and fourth lubricating oil pipes, 13, the first gear pair, 15. Oil chamber, 16. Front end oil passage, 17. Transmission front cover, 18. Transmission housing, 20. Second gear pair, 22. Second reverse gear pair, A, B, C, D, E are oil Intersection, a, b, c, d, e, f, g, h are bearings.

Detailed ways

The utility model will be further described in detail below in conjunction with specific embodiments, which are explanations of the utility model rather than limitations.

As shown in Fig. 1, a kind of forced lubricating system of three intermediate shaft transmissions of the present utility model, transmission comprises main shaft 8, subshaft (6, 7, 9), subshaft 9 parts are immersed in below the oil surface, subshaft (6, 7) and Relevant parts are far away from the oil surface and require forced lubrication. A gear oil pump 4 and a diverter valve 5 are installed on the top of the transmission rear end cover 2, and an oil suction port 1 is installed at the bottom of the transmission housing (below the oil level). The oil pump 4 is driven by the countershaft 6, and the lubricating oil is pumped from the oil suction port 1 through the external oil pipe 3 to the port of the diverter valve 5A, and the diverter valve 5 divides the oil circuit into four routes and passes through ports B, C, D and E respectively ( The E port is directly connected to the transmission inside the corresponding position of the A port) to the inside of the transmission. The oil pipes that the diverter valve 5 communicates with ports B, C, D, and E are all arranged outside the transmission. Through multiple oil pipes arranged outside the transmission, the heat exchange between the inside of the transmission and the external environment is enhanced, which is beneficial to the heat dissipation of the transmission and ensures the performance of the oil, thereby improving the working conditions of bearings, gears and other components.

As shown in Figure 2, the two ends of the lubricating oil pipe are supported on the rear end cover of the transmission and the transmission casing, and oil holes are arranged on it according to the positions and angles of the lubricated parts. The B port is connected to the lubricating oil pipe 12, and the oil holes on the lubricating oil pipe 12 are arranged at the bearings (c, d) and the reverse gear pair 11, and the B port corresponds to the lubricating oil pipe, and the lubricating oil is splashed to the bearing, and the reverse gear pair; the D port is connected with the lubricating oil pipe 21, and the oil hole on the lubricating oil pipe 21 is arranged on the lubricating bearing (a, h) and the reverse gear pair 22 places, and the D port corresponds to the lubricating oil pipe, lubricating the bearing, and The reverse gear pair; the E port is connected with the lubricating oil pipe 14, the oil hole on the lubricating oil pipe 14 is set at the gear pair 13 between the main shaft 8 and the countershaft 6, the lubricating oil pipe 14 is connected with the oil channel 16 at the front end of the transmission case 18, the transmission The oil passage and oil chamber 15 on the front end cover 17 are connected with the oil passage 10 on the rear end cover 2 of the transmission, and the lubricating oil in the pipe can splash and lubricate or lubricate the bearings (f, e, b), and the E port corresponds to the lubricating oil pipe. The oil hole at the corresponding position lubricates the gear pair between the main shaft and the counter shaft, lubricates the bearing through the oil passage at the front end of the transmission housing, lubricates the bearing through the oil passage and oil chamber on the front cover of the transmission, and lubricates the bearing through the oil passage on the rear end cover of the transmission; The C port is connected to the lubricating oil pipe 19, and the oil hole on the lubricating oil pipe 19 is set at the gear pair 20 between the main shaft 8 and the counter shaft 7, and is connected in the same way as the lubricating oil pipe 14, and the lubricating oil in the pipe can be splashed Lubricate or grease the bearings (c, f, g). Port C corresponds to the lubricating oil pipe, and the corresponding gear pair and bearing between the main shaft and the auxiliary shaft are lubricated in the same way.

The working principle is as follows: a gear oil pump 4 and a diverter valve 5 are installed on the upper part of the transmission rear end cover 2, and an oil suction port 1 with a filter screen is installed at the bottom of the transmission housing. When the system is working, the transmission shaft drives 6 oil pumps 4 to work, and the lubricating oil is pumped from the oil inlet 1 through the external oil pipe 3 into the diverter valve 5, and the diverter valve 5 divides the oil circuit into four channels, which are sent to each Lubrication pipe. The lubricating oil pipe is installed inside the transmission, and the two ends are respectively supported on the transmission back cover 2 and the transmission housing 18. According to the positions and angles of the parts to be lubricated, a plurality of small holes are opened on the lubricating oil pipe, and the oil holes are formed on the lubricating oil pipe. Divergent distribution. Lubricating oil splashes to bearings, gears and other parts that need to be lubricated through each oil hole. For large-scale mechanical transmissions that have many parts away from the oil surface and splash lubrication cannot achieve good lubrication effects, forced lubrication is performed to improve the service life of the transmission and work performance.

Claims (8)

1. a countershaft transmission forced lubricating system, it is characterized in that, comprise: speed changer and the gear oil pump (4) and the diverter valve (5) that are arranged on speed changer rear end cover (2) top, speed changer comprises main shaft (8) and three countershafts (6,7,9), 3rd countershaft (9) part is immersed in below pasta, and the first countershaft (6) and the second countershaft (7) are all away from pasta; Oil pumping mouth (1) is installed bottom case of transmission; Oil pump (4) is driven by normal the first countershaft (6) turned be located in speed changer, by oil pumping mouth (1), lubricant oil is pumped into diverter valve (5) entrance by external oil pipe (3), oil circuit is divided into some branch roads and is communicated with the lubricant pipe of speed changer inside by diverter valve (5), and described lubricant pipe has multiple oilhole.

2. a kind of three countershaft transmission forced lubricating systems according to claim 1, it is characterized in that, oil circuit is divided into four tunnels to be communicated with four lubricant pipes (12,14,19,21) of speed changer inside respectively by B, C, D, E mouth by described diverter valve (5), and described B, C, D, E mouth is all arranged on speed changer rear end cover (2).

3. a kind of three countershaft transmission forced lubricating systems according to claim 2, is characterized in that, the two ends of described lubricant pipe are bearing on speed changer rear end cover (2) and case of transmission (18) respectively.

4. a kind of three countershaft transmission forced lubricating systems according to claim 3, it is characterized in that, described B mouth is connected with the first lubricant pipe (12), the oilhole on the first lubricant pipe (12) be arranged on bearing (c, d) and the first reverse gear to (11) place; Described D mouth is connected with the 4th lubricant pipe (21), the oilhole on the 4th lubricant pipe (21) be arranged on bearing (a, h) and the second reverse gear to (22) place; Described E mouth is connected with the second lubricant pipe (14), oilhole on second lubricant pipe (14) is arranged on the first gear mesh (13) place between main shaft (8) and the first countershaft (6), and the second lubricant pipe (14) is all communicated with the upper oil duct (10) of speed changer rear end cover (2) with case of transmission (18) front end oil duct (16), the upper oil duct of speed changer front cover (17) and oil pocket (15); Described C mouth is connected with the 3rd lubricant pipe (19), oilhole on 3rd lubricant pipe (19) is arranged on the second gear mesh (20) place between main shaft (8) and the second countershaft (7), and identical with the Placement of the second lubricant pipe (14), and be symmetrical arranged with the second lubricant pipe (14).

5. a kind of three countershaft transmission forced lubricating systems according to claim 2, it is characterized in that, the oil pipe that described diverter valve (5) is communicated with B, C, D, E mouth is all arranged on speed changer outside.

6. a kind of three countershaft transmission forced lubricating systems according to claim 1, is characterized in that, described oil pumping mouth (1) place is provided with filter screen.

7. a kind of three countershaft transmission forced lubricating systems according to claim 1, is characterized in that, described oil pumping mouth (1) is arranged on the position of below the pasta bottom case of transmission.

8. a kind of three countershaft transmission forced lubricating systems according to claim 1, it is characterized in that, described oilhole becomes divergent shape to distribute on lubricant pipe.