CN115585249A

CN115585249A - Hydraulic-hydraulic integrated transmission axle gear box

Info

Publication number: CN115585249A
Application number: CN202211378898.7A
Authority: CN
Inventors: 安颖; 高帅; 祝建仁; 倪石龙
Original assignee: Hunan Kingrain Electro Hydraulic System Co ltd; Hunan University of Science and Technology
Current assignee: Hunan Kingrain Electro Hydraulic System Co ltd; Hunan University of Science and Technology
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-01-10

Abstract

The invention discloses a hydraulic-hydraulic integrated transmission axle gear box, which comprises a gear box body, wherein a protective shell is detachably connected to the gear box body, a circulating oil drain port and a circulating oil return port are formed in the gear box body, the hydraulic-hydraulic integrated transmission axle gear box comprises a filtering assembly, the filtering assembly comprises a primary filter and a secondary filter, a first oil inlet and a first oil outlet are formed in the primary filter, a first pipeline is fixedly connected to the first oil inlet, a first oil pump is mounted on the first pipeline, the first oil outlet is communicated with the secondary filter through a second pipeline, a first oil pump is mounted on the first pipeline, the secondary filter comprises a secondary filter shell, a filter core is arranged in the secondary filter shell, a second oil inlet and a second oil outlet are formed in the secondary filter shell, a third pipeline is fixedly connected to the second oil outlet, and the third pipeline is communicated with the circulating oil return port. The invention filters the lubricating oil twice, reduces abrasive dust or other impurities in the lubricating oil, and can reduce the abrasion speed of parts in the gear box.

Description

Hydraulic-hydraulic integrated transmission axle gear box

Technical Field

The invention relates to the technical field of transmission gear boxes, in particular to a hydraulic-hydraulic integrated transmission axle gear box.

Background

The gear box plays an important role in the transmission process, can change the transmission direction of force, change the rotating torque and has a clutch function. Lubrication in the gear box is very important, and good lubrication is the important assurance of gear box steady operation, and in the gear box normal operating process, can have metal abrasive dust, dust and other debris constantly sneak into lubricating oil, filters lubricating oil, and reducible debris are to the wearing and tearing of gear box internals, increase of service life.

The patent with application number 201310266316.0 discloses a hydrodynamic-hydraulic integrated transmission axle gearbox, wherein a lubricating system comprises a lubricating oil pump, a box lubricating oil way and an oil collecting tank, the lubricating oil pump is driven by a driven gear through the oil pump, oil is supplied to each lubricating point through the box lubricating oil way and the oil collecting tank, lubricating oil is not filtered in the lubricating oil circulating process, the risk of aggravating the abrasion of parts in the gearbox is large, and therefore the hydrodynamic-hydraulic integrated transmission axle gearbox is provided for solving the problems.

Disclosure of Invention

The invention aims to provide a hydraulic-hydraulic integrated transmission axle gear box, which solves the problems in the prior art, can filter lubricating oil and prolong the service life of internal parts of the gear box.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a hydraulic-hydraulic integrated transmission axle gear box, which comprises a gear box body, wherein a protective shell is detachably connected to the gear box body, and a circulating oil discharge port and a circulating oil return port are formed in the gear box body, and the hydraulic-hydraulic integrated transmission axle gear box comprises:

the filter assembly is arranged in the protective shell and comprises a primary filter and a secondary filter, a first oil inlet and a first oil outlet are formed in the primary filter, a first pipeline is fixedly connected to the first oil inlet, a first oil pump is installed on the first pipeline, the first pipeline is fixedly connected with the circulating oil discharge port, the first oil outlet is communicated with the secondary filter through a second pipeline, the first oil pump is installed on the first pipeline, the secondary filter comprises a secondary filter shell, a filter element is arranged in the secondary filter shell, a second oil inlet and a second oil outlet are formed in the secondary filter shell, the second oil inlet is located in the filter element, the second oil outlet is located outside the filter element, a third pipeline is fixedly connected to the second oil outlet and communicated with the circulating oil return port, and a temperature adjusting assembly is arranged on the third pipeline.

Preferably, the primary filter includes a primary filter shell, the first oil inlet and the first oil outlet are provided on the primary filter shell, a screen is fixedly connected in the primary filter shell, a plurality of flow deflectors are fixedly connected on the screen, the flow deflectors are arranged in an inclined manner, the screen is provided with a through hole, the through hole has the same inclination angle as the flow deflectors, the first pipeline extends into the primary filter shell, and the oil outlet end of the first pipeline faces the screen.

Preferably, the primary filter shell comprises an upper filter shell and a lower filter shell, the first oil inlet and the first oil outlet are formed in the upper filter shell, the screen plate is fixedly connected in the upper filter shell, the upper filter shell and the lower filter shell are respectively and fixedly connected with first flanges, the first flanges are provided with screw holes, screws penetrate through the screw holes, and the first flanges are detachably connected through the screws.

Preferably, go up fixedly connected with recess on the filter shell, sliding connection has the baffler in the recess, rotatory hole has been seted up on the baffler, rotatory downthehole internal rotation is connected with the pivot, the screw thread has been seted up in the rotatory downthehole, the pivot outer fringe is seted up threadedly, rotatory piece with the pivot is passed through the screw thread rotates the connection, seted up on the recess and held the chamber, it rotates in the chamber to hold and is connected with the baffle, the baffle with pivot fixed connection, the pivot is stretched out the recess, the pivot is stretched out recess one end fixedly connected with rotation handle.

Preferably, the temperature adjusting component comprises a temperature adjusting box, the temperature adjusting box is fixedly connected with a temperature adjusting pipe, the temperature adjusting pipe is communicated with the third pipeline, the temperature adjusting pipe is arranged in the temperature adjusting box in a snake shape, the temperature adjusting pipe is fixedly connected with a temperature sensor, the temperature adjusting pipe is fixedly connected with a fourth pipeline between the circulating oil return ports, the temperature adjusting pipe is provided with an air inlet and an air outlet, the air inlet is provided with a heater, and the air outlet is provided with an exhaust fan.

Preferably, a first air guide pipe is fixedly connected to the air inlet, a second air guide pipe is fixedly connected to the air outlet, the first air guide pipe and the second air guide pipe penetrate through the protective shell respectively, the heater is fixedly connected to the inside of the first air guide pipe, an installation block is fixedly connected to the inside of the first air guide pipe, a filter plate is abutted to the installation block, an end cover is detachably connected to the first air guide pipe, a plurality of ventilation holes are formed in the end cover, the exhaust fan is fixedly connected to the inside of the second air guide pipe, and the filter plate is fixedly connected to the inside of the second air guide pipe.

Preferably, the second-stage filter shell comprises a shell cover and a shell body, the shell cover and the shell body are respectively and fixedly connected with a second flange, a connecting hole is formed in the second flange, a screw penetrates through the connecting hole, the two flanges pass through the screw and can be detachably connected, a mounting groove is formed in the shell body, the filter element is clamped in the mounting groove, a positioning ring is fixedly connected to the shell cover, a second oil inlet and a second oil outlet are formed in the shell body, and a second oil pump is installed on a second pipeline.

Preferably, the housing cover is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating rod, the rotating rod penetrates through the housing cover, the rotating rod extends into the housing, the rotating rod is fixedly connected with a plurality of blades, and the blades are located in the filter core.

Preferably, install the third oil pump on the third pipeline, the third oil pump is located the tempering tank upper reaches, the third oil pump with between the second oil-out install the oil storage tank on the third pipeline, the oil storage tank with the intercommunication has back oil pipe way on the fourth pipeline, back oil pipe installs the relief valve on the road, the oil storage tank with between the second oil-out install the check valve on the third pipeline.

Preferably, the gear box body with it all is equipped with the bolt hole to open on the protective housing, bolt hole female connection has the bolt, the gear box body with the protective housing passes through the bolt can be dismantled and connect

The invention discloses the following technical effects: in the device, under the action of the first oil pump, the lubricating oil is subjected to primary filtration through the primary filter so as to reduce the burden of the filter element, the lubricating oil passing through the primary filter enters the secondary filter shell from the second oil inlet through the second pipeline, and after being filtered by the filter element, the lubricating oil enters the circulating oil return port through the third pipeline, and the temperature of the lubricating oil can be adjusted by the temperature adjusting component on the third pipeline, so that the lubricating oil is ensured to be in a proper temperature range. The invention filters the lubricating oil twice, reduces abrasive dust or other impurities in the lubricating oil and can reduce the abrasion speed of parts in the gear box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic structural view of a hydraulic-hydraulic integrated drive axle gearbox of the present invention;

FIG. 2 is a schematic view of the internal structure of the protective case of the present invention;

FIG. 3 is a partial enlarged view of a in FIG. 2;

FIG. 4 is a partial enlarged view of b in FIG. 2;

FIG. 5 is a partial enlarged view of c in FIG. 2;

wherein, 1, the gear box body; 2. a protective shell; 3. a circulating oil drain port; 4. a circulating oil return port; 5. a first oil inlet; 6. a first oil outlet; 7. a first pipeline; 8. a first oil pump; 9. a second pipeline; 10. a secondary filter shell; 11. a filter element; 12. a second oil inlet; 13. a second oil outlet; 14. a third pipeline; 15. a primary filter housing; 16. a screen plate; 17. a flow deflector; 18. an upper filter shell; 19. a lower filter shell; 20. a first flange; 21. a groove; 22. a barrier plate; 23. a rotating shaft; 24. a baffle plate; 25. a rotation handle; 26. a temperature adjusting box; 27. a temperature regulating tube; 28. a fourth pipeline; 29. an air inlet; 30. an air outlet; 31. a heater; 32. an exhaust fan; 33. a first air duct; 34. a second air duct; 35. mounting blocks; 36. a filter plate; 37. an end cap; 38. a shell cover; 39. a housing; 40. a second flange; 41. a positioning ring; 42. a motor; 43. a rotating rod; 44. a blade; 45. a third oil pump; 46. an oil storage tank; 47. an oil return line; 48. a pressure relief valve; 49. a one-way valve; 50. a temperature sensor; 51. a second oil pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-5, the invention provides a hydraulic-hydraulic integrated transmission axle gear box, which comprises a gear box body 1, wherein a protective shell 2 is detachably connected to the gear box body 1, and a circulating oil discharge port 3 and a circulating oil return port 4 are arranged on the gear box body 1, and the hydraulic-hydraulic integrated transmission axle gear box comprises:

the filter assembly is arranged in the protective shell 2 and comprises a primary filter and a secondary filter, the primary filter is provided with a first oil inlet 5 and a first oil outlet 6, the first oil inlet 5 is fixedly connected with a first pipeline 7, the first pipeline 7 is provided with a first oil pump 8, the first pipeline 7 is fixedly connected with a circulating oil discharge port 3, the first oil outlet 6 is communicated with the secondary filter through a second pipeline 9, the first pipeline 7 is provided with the first oil pump 8, the secondary filter comprises a secondary filter shell 10, a filter core 11 is arranged in the secondary filter shell 10, the secondary filter shell 10 is provided with a second oil inlet 12 and a second oil outlet 13, the second oil inlet 12 is located in the filter core 11, the second oil outlet 13 is located outside the filter core 11, the second oil outlet 13 is fixedly connected with a third pipeline 14, the third pipeline 14 is communicated with a circulating oil return port 4, and the third pipeline 14 is provided with a temperature adjusting assembly.

Lubricating oil in the gear box body 1 is discharged through the circulating oil discharge port 3, and after being filtered by the filtering component, the lubricating oil enters positions needing lubricating from the circulating oil return port 4, the primary filter is used for performing primary filtering on the lubricating oil, so that the burden of the filter element 11 is reduced, under the action of the first oil pump 8, the lubricating oil enters from the first oil inlet 5 through the first pipeline 7, flows out from the first oil outlet 6 after being filtered by the primary filter, enters into the secondary filter shell 10 from the second oil inlet 12 through the second pipeline 9, flows out from the second oil outlet 13 after being filtered by the filter element 11, and enters into the circulating oil return port 4 through the third pipeline 14, and the temperature regulating component is used for regulating the temperature of the lubricating oil in the third pipeline 14, so as to heat or cool the lubricating oil, and ensure that the lubricating oil is in a proper temperature range.

According to the further optimization scheme, the primary filter comprises a primary filter shell 15, a first oil inlet 5 and a first oil outlet 6 are formed in the primary filter shell 15, a screen plate 16 is fixedly connected into the primary filter shell 15, a plurality of flow deflectors 17 are fixedly connected onto the screen plate 16, the flow deflectors 17 are obliquely arranged, the screen plate 16 is provided with through holes, the through holes and the flow deflectors 17 have the same inclination angle, the first pipeline 7 extends into the primary filter shell 15, and the oil outlet end of the first pipeline 7 faces the screen plate 16.

The lubricating oil flows out from the first pipeline 7 and faces the screen plate 16, so that the lubricating oil flows to the position below the screen plate 16, and the lubricating oil flows obliquely downwards under the action of the flow guide sheet 17, so that abrasive dust at the bottom of the primary filter shell 15 can be prevented from being stirred up, the abrasive dust is prevented from rising, and the lubricating oil flowing out from the first oil outlet 6 can reduce the content of the abrasive dust under the action of the screen plate 16.

Further optimize the scheme, elementary shell 15 of straining includes and strains shell 18 and lower filter shell 19 on, and first oil inlet 5 and first oil-out 6 are seted up on last filter shell 18, and otter board 16 fixed connection is in last filter shell 18, on strain shell 18 and filter shell 19 down and respectively fixedly connected with first flange 20, seted up the screw hole on the first flange 20, wear to be equipped with the screw in the screw hole, two first flanges 20 can dismantle the connection through the screw.

The abrasive dust can deposit in straining the shell 19 down, strains shell 18 and strain shell 19 down and realize dismantling the connection through two first flanges 20 on, conveniently clears up the abrasive dust in straining the shell 19 down.

Further optimization scheme, go up and strain on the shell 18 fixed connection recess 21, sliding connection has separation plate 22 in the recess 21, rotatory hole has been seted up on separation plate 22, rotatory downthehole internal rotation is connected with pivot 23, the screw thread has been seted up in the rotatory downthehole, the screw thread has been seted up to the 23 outer fringe of pivot, rotatory piece and pivot 23 pass through the screw thread and rotate the connection, seted up on the recess 21 and held the chamber, it rotates and is connected with baffle 24 to hold the intracavity, baffle 24 and pivot 23 fixed connection, recess 21 is stretched out to pivot 23, the pivot 23 stretches out the rotatory handle 25 of recess 21 one end fixedly connected with.

Through rotating the rotation handle 25, drive pivot 23 and rotate, when pivot 23 rotated, can drive baffler 22 and remove, can filter the complete shutoff of shell 18 on, will filter shell 19 down after the complete shutoff again, the outflow of reducible lubricating oil, it is more convenient to clear up the abrasive dust in the shell 19 down.

Further optimize the scheme, the subassembly that adjusts the temperature includes the temperature regulating box 26, and temperature regulating box 26 fixedly connected with adjusts the temperature pipe 27, adjusts the temperature pipe 27 and communicates with third pipeline 14, adjusts the temperature pipe 27 and is snakelike arranging in the temperature regulating box 26, and fixedly connected with temperature sensor 50 on adjusting the temperature pipe 27, adjusts the temperature pipe 27 and circulates fixedly connected with fourth pipeline 28 between oil return opening 4, has seted up air intake 29 and air outlet 30 on adjusting the temperature, is equipped with heater 31 on the air intake 29, is equipped with exhaust fan 32 on the air outlet 30.

After the lubricating oil flows into the temperature adjusting pipe 27 from the third pipeline 14, the temperature of the lubricating oil inside can be adjusted through the heater 31 and the exhaust fan 32, the temperature sensor 50 can measure the temperature of the lubricating oil, when the temperature of the lubricating oil is higher, the heater 31 can be closed, only the exhaust fan is opened, cold air enters from the air inlet 29, the temperature of the lubricating oil in the temperature adjusting pipe 27 is reduced, when the temperature of the lubricating oil is lower, the heater 31 and the exhaust fan can be opened, the air entering the temperature adjusting box 26 is heated, and therefore the lubricating oil can quickly reach the position needing to be lubricated.

Further optimize the scheme, fixedly connected with first guide duct 33 on the air intake 29, fixedly connected with second guide duct 34 on the air outlet 30, protective housing 2 is passed respectively to first guide duct 33 and second guide duct 34, heater 31 fixed connection is in first guide duct 33, fixedly connected with installation piece 35 in first guide duct 33, the butt has filter 36 on the installation piece 35, detachably connected with end cover 37 on the first guide duct 33, a plurality of ventilative holes have been seted up on the end cover 37, exhaust fan 32 fixed connection is in second guide duct 34, fixedly connected with filter 36 in the second guide duct 34.

The filter plate 36 is used for filtering air entering the temperature-adjusting box 26 and reducing the entering of dust and impurities, the first air guide pipe 33 can be opened through the end cover 37, the filter plate 36 is convenient to replace, and the filter plate 36 in the second air guide pipe 34 prevents impurities or dust from entering the temperature-adjusting box 26 from the second air guide pipe 34.

Further optimize the scheme, second grade filter shell 10 includes cap 38 and casing 39, difference fixedly connected with second flange 40 on cap 38 and the casing 39, the connecting hole has been seted up on the second flange 40, wear to be equipped with the screw in the connecting hole, two flanges pass through the screw and can dismantle the connection, the mounting groove has been seted up on the casing 39, filter element 11 joint is in the mounting groove, fixedly connected with holding ring 41 on cap 38, second oil inlet 12 and second oil-out 13 are seted up on casing 39, install second oil pump 51 on the second pipeline 9.

The filter element 11 is clamped in the mounting groove, after the cover 38 is opened, the filter element 11 can be taken out, under the action of the second oil pump 51, lubricating oil enters the filter element 11 from the second oil inlet 12, and flows out of the second oil outlet 13 after being filtered by the filter element 11.

Further optimize the scheme, fixedly connected with motor 42 on the cap 38, motor 42 output end fixedly connected with bull stick 43, bull stick 43 passes cap 38, and bull stick 43 stretches into in the casing 39, and fixedly connected with a plurality of blades 44 on the bull stick 43, blade 44 are located the filter core 11.

The motor 42 drives the rotating rod 43 to rotate, the rotating rod 43 drives the blades 44 to rotate, lubricating oil in the filter element 11 is stirred, and impurities in the lubricating oil are prevented from being deposited at the bottom to cause partial blockage of the filter element 11.

In a further optimized scheme, a third oil pump 45 is mounted on the third pipeline 14, the third oil pump 45 is located at the upstream of the temperature adjusting tank 26, an oil storage tank 46 is mounted on the third pipeline 14 between the third oil pump 45 and the second oil outlet 13, the oil storage tank 46 is communicated with the fourth pipeline 28 through an oil return pipeline 47, a pressure relief valve 48 is mounted on the oil return pipeline 47, and a one-way valve 49 is mounted on the third pipeline 14 between the oil storage tank 46 and the second oil outlet 13.

The oil reservoir 46 is used for temporarily storing the filtered lubricating oil, the lubricating oil flows from the oil reservoir 46 into the temperature control pipe 27 by the third oil pump 45, the relief valve 48 is opened when the oil pressure in the fourth line 28 is too high, the lubricating oil flows back into the oil reservoir 46 through the oil return line 47, and the check valve 49 prevents the lubricating oil from flowing back into the housing 39.

Further optimize the scheme, it all is equipped with the bolt hole to open on gear box body 1 and the protective housing 2, and bolt hole female connection has the bolt, and gear box body 1 and protective housing 2 can dismantle the connection through the bolt.

Through bolted connection gear box body 1 and protective housing 2, make things convenient for maintenance.

This device theory of operation, when gear box body 1 during operation, first oil pump 8, second oil pump 51 and third oil pump 45 all can open, under the effect of first oil pump 8, lubricating oil gets into from first oil inlet 5 through first pipeline 7 and strains in the shell 18, lubricating oil flows out from first pipeline 7, under the effect of water conservancy diversion piece 17, lubricating oil slope downflow, avoid swashing the abrasive dust of the shell 15 bottom of elementary straining, prevent that the abrasive dust from rising, the abrasive dust can deposit and strain under in the shell 19, on strain shell 18 and strain shell 19 down and realize dismantling the connection through two first flanges 20, conveniently clear up the abrasive dust of straining in the shell 19 down. Under the action of the second oil pump 51, the lubricating oil enters the shell 39 from the second oil inlet 12 through the second pipeline 9, flows out from the second oil outlet 13 after being filtered by the filter element 11, enters the oil storage tank 46, and enters the temperature adjusting pipe 27 under the action of the third oil pump 45, the temperature sensor 50 measures the temperature of the lubricating oil, when the temperature of the lubricating oil is high, the heater 31 is closed, only the exhaust fan is opened, cold air enters from the air inlet 29, the temperature of the lubricating oil in the temperature adjusting pipe 27 is reduced, and when the temperature of the lubricating oil is low, the heater 31 and the exhaust fan are opened, so that the air entering the temperature adjusting tank 26 is heated, and the lubricating oil can quickly reach the position needing lubricating. When the oil pressure in the fourth line 28 is too high, the relief valve 48 opens, and the lubricating oil flows back into the oil reservoir 46 through the oil return line 47, preventing the fourth line 28 from bursting. In this embodiment, for convenient maintenance, the maintenance mouth can still be seted up to protective housing 2, rotates on the maintenance mouth to be connected with sealed lid, and this is prior art, does not do the perplexing.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. The utility model provides a transmission axletree gear box is synthesized to hydraulic power-hydraulic pressure, includes gear box body (1), can dismantle on gear box body (1) and be connected with protective housing (2), have circulation oil drain port (3) and circulation oil return opening (4) on gear box body (1), its characterized in that includes:

the oil-water separator comprises a filtering assembly, the filtering assembly is arranged in a protective shell (2), the filtering assembly comprises a primary filter and a secondary filter, the primary filter is provided with a first oil inlet (5) and a first oil outlet (6), the first oil inlet (5) is fixedly connected with a first pipeline (7), the first pipeline (7) is provided with a first oil pump (8), the first pipeline (7) is fixedly connected with a circulating oil discharge port (3), the first oil outlet (6) is communicated with the secondary filter through a second pipeline (9), the first oil pump (8) is arranged on the first pipeline (7), the secondary filter comprises a secondary filter shell (10), a filter element (11) is arranged in the secondary filter shell (10), a second oil inlet (12) and a second oil outlet (13) are formed in the secondary filter shell (10), the second oil inlet (12) is located in the filter element (11), the second oil outlet (13) is located outside the filter element (11), a third oil outlet (13) is fixedly connected with a third temperature adjusting pipeline (14), and the third oil adjusting pipeline (14) is communicated with a circulating oil return port (4), and the third oil return pipeline (14) is arranged on the secondary filter shell (4).

2. The hydro-hydraulic combination drive axle gearbox of claim 1, wherein: the primary filter comprises a primary filter shell (15), a first oil inlet (5) and a first oil outlet (6) are formed in the primary filter shell (15), a screen plate (16) is fixedly connected in the primary filter shell (15), a plurality of flow deflectors (17) are fixedly connected on the screen plate (16), the flow deflectors (17) are obliquely arranged, the screen plate (16) is provided with through holes, the through holes are identical to the inclination angles of the flow deflectors (17), a first pipeline (7) extends into the primary filter shell (15), and the oil outlet end of the first pipeline (7) faces towards the screen plate (16).

3. The hydro-hydraulic combination drive axle gearbox of claim 2, wherein: the primary filter shell (15) comprises an upper filter shell (18) and a lower filter shell (19), a first oil inlet (5) and a first oil outlet (6) are formed in the upper filter shell (18), a screen plate (16) is fixedly connected into the upper filter shell (18), first flanges (20) are fixedly connected onto the upper filter shell (18) and the lower filter shell (19) respectively, screw holes are formed in the first flanges (20), screws penetrate through the screw holes, and the first flanges (20) are detachably connected through the screws.

4. The hydro-hydraulic combination drive axle gearbox of claim 3, wherein: go up fixedly connected with recess (21) on straining shell (18), sliding connection has baffler (22) in recess (21), rotatory hole has been seted up on baffler (22), rotatory downthehole internal rotation is connected with pivot (23), the screw thread has been seted up in the rotatory downthehole, pivot (23) outer fringe is seted up threadedly, rotatory piece with pivot (23) are passed through the screw thread rotates to be connected, seted up on recess (21) and held the chamber, it is connected with baffle (24) to hold the intracavity rotation, baffle (24) with pivot (23) fixed connection, pivot (23) are stretched out recess (21) one end fixedly connected with rotation handle (25).

5. The hydro-hydraulic combination drive axle gearbox of claim 1, wherein: the subassembly that adjusts the temperature is including adjusting temperature case (26), adjust temperature case (26) fixedly connected with pipe (27) that adjusts the temperature, adjust the temperature pipe (27) with third pipeline (14) intercommunication, adjust the temperature pipe (27) are in be snakelike arranging in adjusting temperature case (26), fixedly connected with temperature sensor (50) are gone up in pipe (27) that adjusts the temperature, adjust the temperature pipe (27) with fixedly connected with fourth pipeline (28) between circulation oil return opening (4), air intake (29) and air outlet (30) have been seted up in adjusting the temperature, be equipped with heater (31) on air intake (29), be equipped with exhaust fan (32) on air outlet (30).

6. The hydro-hydraulic combination drive axle gearbox of claim 5, wherein: the air conditioner is characterized in that a first air guide pipe (33) is fixedly connected to the air inlet (29), a second air guide pipe (34) is fixedly connected to the air outlet (30), the first air guide pipe (33) and the second air guide pipe (34) penetrate through the protective shell (2) respectively, the heater (31) is fixedly connected to the inside of the first air guide pipe (33), a mounting block (35) is fixedly connected to the inside of the first air guide pipe (33), a filter plate (36) is abutted to the mounting block (35), an end cover (37) is detachably connected to the first air guide pipe (33), a plurality of air through holes are formed in the end cover (37), the exhaust fan (32) is fixedly connected to the inside of the second air guide pipe (34), and the filter plate (36) is fixedly connected to the inside of the second air guide pipe (34).

7. The hydro-hydraulic combination drive axle gearbox of claim 1, wherein: the secondary filter shell (10) comprises a shell cover (38) and a shell body (39), wherein the shell cover (38) and the shell body (39) are respectively and fixedly connected with second flanges (40), connecting holes are formed in the second flanges (40), screws penetrate through the connecting holes, the two flanges can be detachably connected through the screws, mounting grooves are formed in the shell body (39), the filter element (11) is clamped in the mounting grooves, positioning rings (41) are fixedly connected to the shell cover (38), the second oil inlet (12) and the second oil outlet (13) are formed in the shell body (39), and a second oil pump (51) is installed on the second pipeline (9).

8. The hydro-hydraulic combination drive axle gearbox of claim 7, wherein: the fan-shaped filter is characterized in that a motor (42) is fixedly connected to the shell cover (38), a rotating rod (43) is fixedly connected to the output end of the motor (42), the rotating rod (43) penetrates through the shell cover (38), the rotating rod (43) extends into the shell body (39), a plurality of blades (44) are fixedly connected to the rotating rod (43), and the blades (44) are located in the filter core (11).

9. The hydro-hydraulic combination drive axle gearbox of claim 5, wherein: install third oil pump (45) on third pipeline (14), third oil pump (45) are located tempering tank (26) upper reaches, third oil pump (45) with between second oil-out (13) install oil storage tank (46) on third pipeline (14), oil storage tank (46) with the intercommunication has back oil pipe way (47) on fourth pipeline (28), back oil pipe way (47) is last to install relief valve (48), oil storage tank (46) with between second oil-out (13) install check valve (49) on third pipeline (14).

10. The hydro-hydraulic combination drive axle gearbox of claim 1, wherein: the gearbox body (1) and the protective shell (2) are provided with bolt holes, the bolt holes are connected with bolts in an internal thread mode, and the gearbox body (1) and the protective shell (2) are detachably connected through the bolts.