Locomotive driving gearbox

Abstract

The invention relates to the field of gear boxes, and discloses a locomotive driving gear box which comprises a box body, a first-stage gear, a second-stage gear and a third-stage gear which are sequentially meshed are rotationally connected in the box body, an input shaft is fixed to the first-stage gear, an output shaft is fixed to the third-stage gear, an oil tank is arranged on one side of the outer wall of the box body, and an output shaft is arranged on the other side of the outer wall of the box body. An oil pump is arranged in the oil tank, the oil pump is connected with an oil feeding pipe extending into the tank body, a swing plate is connected to the inner wall face of the tank body, nozzles are installed at the two ends of the swing plate, hoses are connected between the nozzles and the oil feeding pipe, and a driving device for driving the swing plate to swing back and forth is installed on the tank body. An oil outlet is formed in the tank body, and an oil outlet pipe is connected between the oil outlet and the oil tank. The gearbox lubricating device has the following advantages and effects that lubricating oil can be automatically sprayed at multiple angles, and therefore the lubricating effect in a gearbox is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of gear boxes, and in particular to a locomotive drive gear box. Background Art

[0002] Lubrication of gearbox is very important. Insufficient lubrication accounts for more than half of the reasons for gearbox failure. Good lubrication can provide adequate protection for gears and bearings. Common gearbox lubrication methods include gear oil lubrication, semi-fluid grease lubrication, and solid lubricant lubrication. For gearboxes with better sealing, higher speed, larger load, and better sealing performance, gear oil lubrication is generally used. Common gear oil lubrication methods include forced lubrication and splash lubrication. Splash lubrication is generally used for high-speed gears, but for multi-stage transmission gearboxes, splashing oil droplets can only lubricate part of the meshing gears, while the meshing gears far away from the oil-immersed gears are not fully lubricated.

[0003] A Chinese patent application with application publication number CN115962272A discloses a self-lubricating gearbox, which relates to the technical field of transmission devices, including a box body, wherein a primary gear, a secondary gear set and a tertiary gear meshing in sequence are arranged in the box body, wherein the primary gear is connected to an input shaft, wherein the tertiary gear is connected to an output shaft, wherein the secondary gear set is rotatably arranged in the box body and is connected to an intermediate shaft, wherein the intermediate shaft penetrates the side wall of the box body and is drivingly connected to an oil pump, wherein the oil pump is fixedly connected to the outside of the box body, wherein an oil inlet pipe is arranged on the oil pump, wherein the oil inlet pipe penetrates the side wall of the box body and extends into the box body, wherein the secondary gear set is rotatably arranged in the box body and is connected to an intermediate shaft, wherein the intermediate shaft penetrates the side wall of the box body and is drivingly connected to an oil pump, wherein the oil pump is fixedly connected to the outside of the box body, wherein an oil inlet pipe is arranged on the oil pump, wherein the oil inlet pipe penetrates the side wall of the box body and extends into the box body, wherein the intermediate shaft ... A nozzle is provided at one end of the oil inlet pipe extending into the box body; the above device has the following shortcomings: the swing rod and the nozzle are driven to swing in the direction of the secondary gear set through the impact of the shift block on the impact block, and then the swing rod is reset through the gravity of the impact block, and the above impact reset action is repeated to finally achieve multi-angle spraying of the nozzle. During this process, the swing of the nozzle is affected by the gear speed. When the gear speed is too fast, the swing rod drives the nozzle to tend to maintain a swinging state and spray in a certain direction, so that its spraying effect is not comprehensive. When the gear speed is slow, the swing rod is pushed to swing at a limited angle, which is not conducive to multi-angle spraying. Summary of the invention

[0004] The purpose of the present invention is to provide a locomotive drive gearbox, which has the effect of not being affected by the gear rotation speed and spraying lubricating oil at multiple angles to ensure lubrication in the gearbox.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a locomotive drive gearbox, comprising a box body, in which a first-stage gear, a second-stage gear and a third-stage gear that are meshed in sequence are rotatably connected, the first-stage gear is fixed with an input shaft, the third-stage gear is fixed with an output shaft, an oil tank is provided on one side of the outer wall of the box body, an oil pump is provided in the oil tank, the oil pump is connected to an oil delivery pipe extending into the box body, a swing plate is connected to the inner wall of the box body, nozzles are installed at both ends of the swing plate, a hose is connected between the nozzle and the oil delivery pipe, the box body is installed with a swing device for driving the swing plate to swing back and forth, an oil outlet is provided in the box body, and an oil outlet pipe is connected between the oil outlet and the oil tank.

[0006] By adopting the above technical solution, when the gearbox is running, the input shaft drives the first-stage gear to rotate, and then drives the second-stage gear and the third-stage gear to rotate, and finally outputs through the output shaft. During this period, the oil pump is started, and the oil in the oil tank is transported to the inside of the box through the oil delivery pipe and then sprayed out through the hose and nozzle. During this period, the swing device drives the swing plate to swing back and forth, and the swing of the swing plate drives the hoses and nozzles at both ends to swing back and forth to automatically change the direction of the nozzle spraying oil, so as to realize multi-angle spraying of lubricating oil on the first-stage gear, the second-stage gear and the third-stage gear without being affected by the gear speed, lubricating all gears, and ensuring that the gearbox is fully lubricated.

[0007] The present invention is further configured as follows: the swing device includes a fixed plate fixed to the inner wall of the box body through a fixed shaft, the bottom of the fixed plate is rotatably connected to a gear, the gear is coaxially connected to the swing plate, the fixed shaft is rotatably connected to a sleeve shaft outside, a swing rod and a fan-shaped gear located between the swing rod and the fixed plate and meshing with the gear are fixed to the sleeve shaft, the box body is rotatably connected to a rotating shaft, the rotating shaft is fixed to a rotating rod through a connecting plate, and the swing rod is provided with a swinging groove for the rotating rod to move.

[0008] By adopting the above technical solution, the rotation of the rotating shaft drives the rotating rod to rotate through the connecting plate, and the rotating rod rotates up and down in the swing groove, thereby pushing the swing rod to swing back and forth, and the sleeve shaft fixed with the swing rod rotates back and forth relative to the fixed shaft. The back and forth rotation of the sleeve shaft drives the fan gear to swing back and forth synchronously, so that the fan gear drives the gear meshing with it to rotate back and forth, so that the gear drives the swing plate fixed coaxially with it to rotate and swing, change the direction of oil spraying from the nozzle, and realize lubrication of all gears.

[0009] The present invention is further configured as follows: a first pulley is fixed to one end of the rotating shaft extending out of the box body, a second pulley is coaxially fixed to the three-stage gear, and a transmission belt is sleeved between the first pulley and the second pulley.

[0010] By adopting the above technical solution, when the third-stage gear starts to rotate, the first pulley and the second pulley are synchronously driven to rotate through the transmission belt, so that the rotating shaft rotates synchronously and starts to drive the nozzle to swing back and forth to realize multi-directional spraying of the oil.

[0011] The present invention is further configured as follows: an oil receiving plate located at the bottom of the first-stage gear, the second-stage gear and the third-stage gear is fixed in the box body, and the connection between the two ends of the oil receiving plate and the inner wall of the box body is in an arc shape.

[0012] By adopting the above technical solution, the sprayed lubricating oil flows to the oil receiving plate after lubricating the multi-stage gears. The two ends of the oil receiving plate are in an arc shape so that the lubricating oil can gather on the oil receiving plate. During the operation of the gearbox, the rotation of the first-stage gear drives the lubricating oil on the oil receiving plate to splash onto other multi-stage gears, further realizing splash lubrication, thereby further ensuring that each part that needs lubrication can be fully lubricated, realizing multi-stage utilization of the lubricating oil, and ensuring the lubrication effect.

[0013] The present invention is further configured as follows: a cavity is provided between the oil receiving plate and the inner bottom of the box body.

[0014] By adopting the above technical solution, the noise propagation in the gear box is weakened, achieving a certain sound insulation effect.

[0015] The present invention is further configured as follows: an oil outlet plate is fixed at the oil outlet, first through holes are evenly arranged on the oil outlet plate, the oil outlet pipe is rotatably connected to a control plate, second through holes corresponding to the first through holes are evenly arranged on the control plate, and a filter plate is fixed in the oil outlet pipe.

[0016] By adopting the above technical solution, when the control plate is rotated so that the second through hole on the control plate is aligned with the first through hole, the oil outlet connects the inside of the box with the oil outlet pipe, and the oil on the oil receiving plate inside the box is filtered by the filter plate in the oil outlet pipe and then discharged into the oil tank, thereby realizing further recycling of the lubricating oil.

[0017] The present invention is further configured as follows: the oil outlet pipe is provided with a debris removal port located between the filter plate and the oil outlet, a sleeve is rotatably connected to the outer wall of the oil outlet pipe, and the sleeve is provided with a control port corresponding to the debris removal port.

[0018] By adopting the above technical scheme, after the lubricating oil is filtered by the filter plate in the oil outlet pipe, impurities are retained in the oil outlet pipe. By rotating the sleeve to align the control port with the impurity removal port, the inside of the oil outlet pipe can be connected to the outside world, and the impurities are discharged from the oil outlet pipe, thereby completing the impurity removal in the oil outlet pipe, maintaining the cleanliness of the lubricating oil inside the box, thereby maintaining the lubrication effect inside the box.

[0019] The present invention is further configured as follows: the first through hole and the second through hole are configured as fan-shaped, the area of ​​the oil outlet plate is larger than the area of ​​the first through hole, and the area of ​​the control plate is larger than the area of ​​the second through hole.

[0020] By adopting the above technical solution, when the second through hole is aligned with the first through hole, the oil outlet connects the interior of the box with the oil outlet pipe, and the lubricating oil inside the box is discharged. When the control plate is rotated to close the first through hole, since the area of ​​the oil outlet plate is larger than the area of ​​the first through hole, and the area of ​​the control plate body is larger than the area of ​​the second through hole, the first through hole and the second through hole are rotated and staggered, and the control plate body covers the first through hole to close the oil outlet. When the control plate is continuously rotated, the control plate body is still in a state of covering the first through hole, and the oil outlet is still in a closed state.

[0021] The present invention is further configured as follows: a third pulley rotatably connected to the oil outlet pipe is fixed to the control panel, a fourth pulley rotatably connected to the oil outlet pipe is fixed to one end of the sleeve where the control port is not provided, and a driving device for driving the third pulley and the fourth pulley to rotate is installed on the box body.

[0022] By adopting the above technical scheme, initially, the control port and the impurity removal port are in an interlaced state, and the impurity removal port is closed. When removing impurities, the driving device drives the third pulley and the fourth pulley to rotate synchronously, thereby driving the control plate and the sleeve to rotate. When the control plate rotates, the first through hole and the second through hole rotate and interlace, and the control plate body covers the first through hole to close the oil outlet. At this time, the control port on the sleeve and the impurity removal port on the oil outlet pipe are still in an interlaced state, and then the third pulley drives the control plate to rotate continuously. At this time, the control plate body is still in a state of covering the first through hole. At this time, the control port on the sleeve begins to align and communicate with the impurity removal port on the oil outlet pipe, so that impurities are discharged from the oil outlet pipe, and at the same time, the lubricating oil in the box body is prevented from overflowing; after the impurities are discharged, the control plate and the sleeve rotate synchronously in opposite directions, and the control port on the sleeve first interlaces with the impurity removal port on the oil outlet pipe to close the impurity removal port, and then the second through hole on the control plate is aligned with the first through hole, so that the oil outlet connects the inside of the box body with the oil outlet pipe.

[0023] The present invention is further configured as follows: the driving device includes a driving shaft rotatably connected to the box body and a driving motor installed on the box body for driving the driving shaft to rotate, and the driving shaft drives the third pulley and the fourth pulley to rotate synchronously through two driving belts.

[0024] By adopting the above technical solution, the drive motor is started to drive the drive shaft to rotate, so that the drive shaft drives the third pulley and the fourth pulley to rotate synchronously through the drive belt to complete the automatic opening and closing of the impurity removal port and the oil outlet.

[0025] The beneficial effects of the present invention are:

[0026] 1. The oil in the oil tank is transported to the inside of the box through the oil delivery pipe and then sprayed out through the hose and nozzle. During this period, the swing device drives the swing plate to swing back and forth. The swing of the swing plate drives the hoses and nozzles at both ends to swing back and forth to automatically change the direction of the nozzle spraying oil, so as to realize multi-angle spraying of lubricating oil on the first-stage gear, the second-stage gear and the third-stage gear without being affected by the gear speed, lubricating all gears and ensuring that the gear box is fully lubricated;

[0027] 2. The sprayed lubricating oil flows to the oil receiving plate after lubricating the multi-stage gears. The two ends of the oil receiving plate are in an arc shape so that the lubricating oil can gather on the oil receiving plate. During the operation of the gearbox, the first-stage gear rotates to splash the lubricating oil on the oil receiving plate onto other multi-stage gears, further realizing splash lubrication, thereby further ensuring that each part that needs lubrication can be fully lubricated, realizing multi-stage utilization of lubricating oil, and ensuring the lubrication effect;

[0028] 3. When the control panel is rotated so that the second through hole on the control panel is aligned with the first through hole, the oil outlet connects the inside of the box with the oil outlet pipe, and the oil on the oil receiving plate inside the box is filtered by the filter plate in the oil outlet pipe and then discharged into the oil tank, thereby realizing further recycling of the lubricating oil;

[0029] 4. When the lubricating oil is filtered by the filter plate in the oil outlet pipe, impurities are retained in the oil outlet pipe. Rotate the sleeve to align the control port with the impurity removal port, so that the inside of the oil outlet pipe can be connected to the outside world, and the impurities are discharged from the oil outlet pipe, completing the impurity removal in the oil outlet pipe, maintaining the cleanliness of the lubricating oil inside the box, thereby maintaining the lubrication effect inside the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the structure of the present invention.

[0032] Figure 2 It is a schematic diagram of the connection relationship between the swing device and the swing plate in the present invention.

[0033] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0034] Figure 4 It is a schematic diagram of the connection relationship between the rotating shaft, the rotating rod and the swing rod in the present invention.

[0035] Figure 5 It is a schematic diagram of the connection relationship between the oil receiving plate, the oil outlet plate and the box body in the present invention.

[0036] Figure 6 It is a schematic diagram of the connection relationship between the oil outlet pipe, the third pulley, the fourth pulley and the driving device in the present invention.

[0037] Figure 7 It is a side cross-sectional structural schematic diagram of the present invention.

[0038] In the figure, 1, housing; 2, first-stage gear; 3, second-stage gear; 4, third-stage gear; 5, input shaft; 6, oil tank; 7, oil delivery pipe; 8, swing plate; 9, nozzle; 10, hose; 11, swing device; 111, fixed plate; 112, gear; 113, sleeve shaft; 114, swing rod; 115, sector gear; 116, rotating shaft; 117, connecting plate; 118, rotating rod; 119, swing groove; 12, oil outlet; 13 , oil outlet pipe; 14, first pulley; 15, second pulley; 16, transmission belt; 17, oil receiving plate; 18, cavity; 19, oil outlet plate; 20, first through hole; 21, control plate; 22, second through hole; 23, filter plate; 24, impurity removal port; 25, sleeve; 26, control port; 27, third pulley; 28, fourth pulley; 29, driving device; 291, driving shaft; 292, driving motor; 293, driving belt. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1, a locomotive drive gearbox, such as Figure 1 , Figure 2 As shown, it includes a box body 1, in which a primary gear 2, a secondary gear 3 and a tertiary gear 4 that mesh in sequence are rotatably connected, the primary gear 2 is fixed with an input shaft 5, and the tertiary gear 4 is fixed with an output shaft, an oil tank 6 is arranged on one side of the outer wall of the box body 1, an oil pump is arranged in the oil tank 6, and the oil pump is connected to an oil delivery pipe 7 extending into the box body 1, a swing plate 8 is connected to the inner wall surface of the box body 1, nozzles 9 are installed at both ends of the swing plate 8, a hose 10 is connected between the nozzle 9 and the oil delivery pipe 7, a swing device 11 for driving the swing plate 8 to swing back and forth is installed on the box body 1, an oil outlet 12 is arranged in the box body 1, and an oil outlet pipe 13 is connected between the oil outlet 12 and the oil tank 6.

[0041] Further, such as Figure 2-Figure 4As shown, the swing device 11 includes a fixed plate 111 fixed to the inner wall of the box body 1 through a fixed shaft, a gear 112 is rotatably connected to the bottom of the fixed plate 111, the gear 112 is coaxially connected to the swing plate 8, a sleeve shaft 113 is rotatably connected outside the fixed shaft, a swing rod 114 and a fan gear 115 located between the swing rod 114 and the fixed plate 111 and meshing with the gear 112 are fixed to the sleeve shaft 113, the box body 1 is rotatably connected to a rotating shaft 116, a rotating rod 118 is fixed to the rotating shaft 116 through a connecting plate 117, and a swinging groove 119 is provided on the swing rod 114 for the rotating rod 118 to move.

[0042] Further, such as Figure 2 , Figure 3 As shown, a first pulley 14 is fixed to one end of the rotating shaft 116 extending out of the box body 1, a second pulley 15 is coaxially fixed to the three-stage gear 4, and a transmission belt 16 is sleeved between the first pulley 14 and the second pulley 15.

[0043] Further, such as Figure 5 As shown, an oil receiving plate 17 is fixed in the box body 1 and is located at the bottom of the first-stage gear 2, the second-stage gear 3 and the third-stage gear 4. The two ends of the oil receiving plate 17 are connected to the inner wall of the box body 1 in an arc shape, and a cavity 18 is provided between the oil receiving plate 17 and the bottom of the box body 1.

[0044] Further, such as Figure 5-Figure 7 As shown, an oil outlet plate 19 is fixed at the oil outlet 12, and first through holes 20 are evenly arranged on the oil outlet plate 19. The oil outlet pipe 13 is rotatably connected to a control plate 21, and second through holes 22 corresponding to the first through holes 20 are evenly arranged on the control plate 21. A filter plate 23 is fixed in the oil outlet pipe 13, and the oil outlet pipe 13 is provided with a debris removal port 24 located between the filter plate 23 and the oil outlet 12. A sleeve 25 is rotatably connected to the outer wall of the oil outlet pipe 13, and the sleeve 25 is provided with a control port 26 corresponding to the debris removal port 24. The first through hole 20 and the second through hole 22 are arranged in a fan shape. The plate body area of ​​the oil outlet plate 19 is larger than the area of ​​the first through hole 20, and the plate body area of ​​the control plate 21 is larger than the area of ​​the second through hole 22.

[0045] Further, such as Figure 6 As shown, the control panel 21 is fixed with a third pulley 27 rotatably connected to the oil outlet pipe 13, and the end of the sleeve 25 without a control port 26 is fixed with a fourth pulley 28 rotatably connected to the oil outlet pipe 13. A driving device 29 for driving the third pulley 27 and the fourth pulley 28 to rotate is installed on the housing 1. The driving device 29 includes a driving shaft 291 rotatably connected to the housing 1 and a driving motor 292 installed on the housing 1 to drive the driving shaft 291 to rotate. The driving shaft 291 drives the third pulley 27 and the fourth pulley 28 to rotate synchronously through two driving belts 293.

[0046] Working principle of the present invention: when the gearbox is running, the input shaft 5 drives the first-stage gear 2 to rotate, and then drives the second-stage gear 3 and the third-stage gear 4 to rotate, and finally outputs through the output shaft. During this period, the oil pump is started, and the oil in the oil tank 6 is transported to the inside of the box body 1 through the oil delivery pipe 7 and then sprayed out through the hose 10 and the nozzle 9. During this period, the third-stage gear 4 synchronously drives the first pulley 14 and the second pulley 15 to rotate through the transmission belt 16, so that the rotating shaft 116 starts to rotate synchronously, and the rotating shaft 116 rotates to drive the rotating rod 118 to rotate through the connecting plate 117. The rotating rod 118 rotates and moves up and down in the swing groove 119, thereby pushing the swing rod 114 to swing back and forth, and the sleeve shaft 1 fixed to the swing rod 114 13 rotates back and forth relative to the fixed shaft, and the sleeve shaft 113 rotates back and forth to drive the sector gear 115 to swing back and forth synchronously, so that the sector gear 115 drives the gear 112 meshing therewith to rotate back and forth relative to the fixed plate 111, so that the gear 112 drives the swing plate 8 coaxially fixed therewith to rotate and swing, and change the spraying direction of the nozzle 9 to achieve lubrication of all gears. The sprayed lubricating oil flows to the oil receiving plate 17 after lubricating the multi-stage gears. The two ends of the oil receiving plate 17 are in an arc shape so that the lubricating oil can be gathered on the oil receiving plate 17. During the operation of the gear box, the first-stage gear 2 rotates to drive the lubricating oil on the oil receiving plate 17 to splash onto other multi-stage gears, further achieving splash lubrication;

[0047] When lubricating, the control port 26 and the impurity removal port 24 are in an interlaced state, the impurity removal port 24 is closed, the second through hole 22 on the control panel 21 is aligned with the first through hole 20 on the oil outlet plate 19, and the oil outlet 12 connects the inside of the housing 1 with the oil outlet pipe 13. The oil on the oil receiving plate 17 inside the housing 1 is filtered by the filter plate 23 in the oil outlet pipe 13 and then discharged into the oil tank 6, thereby further recycling the lubricating oil. When removing impurities, the drive motor 292 is started to drive the drive shaft 291 to rotate, so that the drive shaft 291 drives the third pulley 27 and the fourth pulley 28 to rotate synchronously through the drive belt 293, thereby driving the control panel 21 and the sleeve 25 to rotate. When the control panel 21 rotates, the first through hole 20 and the second through hole 22 rotate in an interlaced manner, and the control panel 21 covers the first through hole 20 to close the oil outlet. The control port 26 on the sleeve 25 and the impurity removal port 24 on the oil outlet pipe 13 are still in an interlaced state, and then the third pulley 27 drives the control plate 21 to rotate continuously. At this time, the control plate 21 is still in a state of covering the first through hole 20. At this time, the control port 26 on the sleeve 25 begins to align and communicate with the impurity removal port 24 on the oil outlet pipe 13, so that the impurities retained in the oil outlet pipe 13 are discharged from the oil outlet pipe 13, and at the same time, the lubricating oil in the box body 1 is prevented from overflowing; after the impurities are discharged, the control plate 21 and the sleeve 25 rotate synchronously in the opposite direction, and the control port 26 on the sleeve 25 is first interlaced with the impurity removal port 24 on the oil outlet pipe 13 to close the impurity removal port 24, and then the second through hole 22 on the control plate 21 is aligned with the first through hole 20 on the oil outlet plate 19, so that the oil outlet 12 connects the inside of the box body 1 with the oil outlet pipe 13 again.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locomotive drive gearbox, comprising a housing (1), wherein a primary gear (2), a secondary gear (3) and a tertiary gear (4) are rotatably connected in sequence and meshed with each other, the primary gear (2) is fixed with an input shaft (5), and the tertiary gear (4) is fixed with an output shaft, characterized in that: An oil tank (6) is arranged on one side of the outer wall of the box body (1), an oil pump is arranged in the oil tank (6), and the oil pump is connected to an oil delivery pipe (7) extending into the box body (1). A swing plate (8) is connected to the inner wall of the box body (1), nozzles (9) are installed at both ends of the swing plate (8), a hose (10) is connected between the nozzle (9) and the oil delivery pipe (7), and a swing device (11) is installed in the box body (1) for driving the swing plate (8) to swing back and forth. An oil outlet (12) is arranged in the box body (1), and an oil outlet pipe (13) is connected between the oil outlet (12) and the oil tank (6).

2. A locomotive drive gearbox according to claim 1, characterized in that: The swing device (11) comprises a fixed plate (111) fixed to the inner wall surface of the box body (1) via a fixed shaft, the bottom of the fixed plate (111) is rotatably connected to a gear (112), the gear (112) is coaxially connected to the swing plate (8), the fixed shaft is externally rotatably connected to a sleeve shaft (113), the sleeve shaft (113) is fixed with a swing rod (114) and a fan-shaped gear (115) located between the swing rod (114) and the fixed plate (111) and meshing with the gear (112), the box body (1) is rotatably connected to a rotating shaft (116), the rotating shaft (116) is fixed with a rotating rod (118) via a connecting plate (117), and the swing rod (114) is provided with a swinging groove (119) for the rotating rod (118) to move.

3. A locomotive drive gearbox according to claim 2, characterized in that: The rotating shaft (116) extends out of the box body (1) and is fixed with a first pulley (14) at one end, and the third-stage gear (4) is coaxially fixed with a second pulley (15), and a transmission belt (16) is sleeved between the first pulley (14) and the second pulley (15).

4. The locomotive drive gearbox according to claim 1, characterized in that: An oil receiving plate (17) located at the bottom of the first-stage gear (2), the second-stage gear (3) and the third-stage gear (4) is fixed in the box body (1), and the connection between the two ends of the oil receiving plate (17) and the inner wall of the box body (1) is in an arc shape.

5. A locomotive drive gearbox according to claim 4, characterized in that: A cavity (18) is provided between the oil receiving plate (17) and the inner bottom of the box body (1).

6. The locomotive drive gearbox according to claim 1, characterized in that: An oil outlet plate (19) is fixed at the oil outlet (12), and first through holes (20) are evenly arranged on the oil outlet plate (19). The oil outlet pipe (13) is rotatably connected to a control plate (21), and second through holes (22) corresponding to the first through holes (20) are evenly arranged on the control plate (21). A filter plate (23) is fixed in the oil outlet pipe (13).

7. A locomotive drive gearbox according to claim 6, characterized in that: The oil outlet pipe (13) is provided with a debris removal port (24) located between the filter plate (23) and the oil outlet (12); a sleeve (25) is rotatably connected to the outer wall of the oil outlet pipe (13); and the sleeve (25) is provided with a control port (26) corresponding to the debris removal port (24).

8. The locomotive drive gearbox according to claim 7, characterized in that: The first through hole (20) and the second through hole (22) are configured in a fan shape, the plate body area of ​​the oil outlet plate (19) is larger than the area of ​​the first through hole (20), and the plate body area of ​​the control plate (21) is larger than the area of ​​the second through hole (22).

9. The locomotive drive gearbox according to claim 8, characterized in that: The control panel (21) is fixed with a third pulley (27) rotatably connected to the oil outlet pipe (13); the end of the sleeve (25) not provided with the control port (26) is fixed with a fourth pulley (28) rotatably connected to the oil outlet pipe (13); and the housing (1) is provided with a driving device (29) for driving the third pulley (27) and the fourth pulley (28) to rotate.

10. The locomotive drive gearbox according to claim 9, characterized in that: The driving device (29) comprises a driving shaft (291) rotatably connected to the housing (1) and a driving motor (292) installed on the housing (1) for driving the driving shaft (291) to rotate; the driving shaft (291) drives the third pulley (27) and the fourth pulley (28) to rotate synchronously via two driving belts (293).

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