Motor-driven small train gearbox using splash lubrication

Abstract

The invention relates to the field of gearboxes, and discloses a motor-driven small train gearbox using splash lubrication. Comprising a first shell and a second shell which are communicated with each other, a supporting lug installed on the second shell, an installation hole formed in the supporting lug, an input shaft rotationally connected to the first shell and an output shaft rotationally connected to the second shell, and a transmission assembly is in transmission connection between the output shaft and the input shaft. An oil groove is formed in the first shell, one end of the transmission assembly extends into the oil groove, an oil suction assembly is installed outside the output shaft, two extrusion assemblies are arranged in the oil groove, and a belt is connected between the extrusion assemblies and the output shaft in a transmission mode. The gear box has the following advantages and effects that lubricating oil in the oil groove can be brought out when the first bevel gear rotates, the splashed lubricating oil can be smeared on other gears needing to be lubricated, and the lubricating effect on the gears is improved while the size of the gear box is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gear boxes, and in particular to a motor-driven small train gear box using splash lubrication. Background Art

[0002] A gearbox is a mechanical device used to transmit and change speed, usually composed of a set of gears. The gearbox transmits power through the meshing between gears of different sizes and shapes, thereby changing the speed and torque of the input shaft. Gearboxes are commonly used in various mechanical equipment and vehicles, such as automobiles, aircraft, and industrial machinery, to achieve transmission with different speed and torque requirements. The design and selection of gearboxes depends on factors such as the required transmission ratio, output speed, torque, and space limitations.

[0003] The gearbox used in trains is large in size due to its internal structure layout. In addition, since precision devices such as gears are used inside the gearbox, the gears need to be lubricated when working together. When lubricating oil is used to lubricate the gears, an oil suction pump needs to be installed inside the gearbox, which further increases the internal usable space and occupies a large volume. It is not convenient during assembly and transportation. Therefore, we propose a small train gearbox driven by an electric motor using splash lubrication. Summary of the invention

[0004] The object of the present invention is to provide a small-sized train gearbox driven by an electric motor using splash lubrication, which has the advantages of reducing the volume of the gearbox and improving the lubrication effect on the gears.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a motor-driven small train gearbox using splash lubrication, comprising a shell one and a shell two that are connected to each other, a lug installed on the shell two, a mounting hole provided on the lug, an input shaft rotatably connected to the shell one, and an output shaft rotatably connected to the shell two, a transmission assembly being transmission-connected between the output shaft and the input shaft, an oil tank being installed on the shell one, one end of the transmission assembly extending to the interior of the oil tank, an oil suction assembly being installed on the outside of the output shaft, two extrusion assemblies being provided inside the oil tank, and a belt being transmission-connected between the extrusion assembly and the output shaft.

[0006] By adopting the above technical solution, the external power source starts to drive the input shaft to rotate. When the input shaft rotates, the output shaft is driven to rotate through the transmission component. The transmission component can have a larger speed ratio through three-stage transmission, and the rotation speed of the output shaft is increased. The rotating component will rotate in the oil tank during the transmission process, and the external oil pump is used to transport lubricating oil into the oil tank. The lubricating oil in the oil tank contacts the rotating transmission component to roll up the lubricating oil. The splashed lubricating oil can be applied to the parts of the transmission component that need lubrication, thereby reducing the volume of the gear box and improving the lubrication effect on the parts. At the same time, when the output shaft rotates, the oil suction component is driven to rotate and extend to the inside of the oil tank. The output shaft also uses a belt to drive the extrusion component to rotate. When one extrusion component rotates, it squeezes the oil suction component, so that the oil suction component can absorb the lubricating oil in the oil tank, and then when it rotates to another extrusion component and is squeezed by it, the lubricating oil stored in the oil suction component is squeezed out and can be sprayed on the parts of the transmission component, thereby improving the lubrication effect on the parts. In addition, no other power source is required to drive the entire lubrication process, thereby saving volume and energy while having a better lubrication effect.

[0007] The present invention is further configured as follows: the transmission assembly includes a transmission shaft 1 and a transmission shaft 2 rotatably connected to the housing 1, a gear 1 installed on the outside of the input shaft, a gear 2 installed on the outside of the transmission shaft 1 and meshing with the gear 1, a bevel gear 1 installed on the outside of the output shaft, a bevel gear 2 installed on the outside of the transmission shaft 2 and meshing with the bevel gear 1, a gear 3 installed on the outside of the transmission shaft 2, and a gear 4 installed on the outside of the transmission shaft 1 and meshing with the gear 3.

[0008] By adopting the above technical solution, the external power source starts to drive the input shaft to rotate. When the input shaft rotates, the gear 1 meshes with the gear 2 to drive the transmission shaft 1 to rotate. The transmission shaft 1 meshes with the gear 3 and the gear 4 to drive the transmission shaft 2 to rotate. The transmission shaft 2 drives the output shaft to rotate through the bevel gear 1 and the bevel gear 2. Through the three-stage transmission, the parts can have a larger speed ratio and increase the speed of the output shaft.

[0009] The present invention is further configured as follows: the bottom of the bevel gear 1 extends to the inside of the oil groove.

[0010] By adopting the above technical solution, the bevel gear 1 can bring out the lubricating oil in the oil tank when rotating, and the splashed lubricating oil can be applied to other gears that need lubrication, thereby reducing the volume of the gear box and improving the lubrication effect on the gears.

[0011] The present invention is further configured as follows: the oil suction assembly includes a mounting plate installed outside the output shaft, a connecting rod installed on the mounting plate, an empty bag installed on the connecting rod, an end cover connected to the empty bag, and an oil nozzle connected to the end cover.

[0012] The present invention is further configured as follows: the connecting rods are provided with no less than four and are distributed in a circular shape with equal distances on the mounting plate.

[0013] By adopting the above technical solution, when the output shaft rotates, it drives multiple empty bags on the mounting plate to contact and be squeezed by the extrusion components in turn. When the empty bag contacts the first extrusion component, the empty bag is squeezed, and then after being separated from the first extrusion component, the empty bag resets and sucks the lubricating oil in the oil tank through the oil nozzle. Then, when it rotates to contact and be squeezed by another extrusion component, the lubricating oil stored in the empty bag is squeezed out and sprayed out through the oil nozzle, and can be sprayed on other gears, thereby improving the lubrication effect on the gears. In addition, no other power source is required to drive the entire lubrication process, which saves volume and energy while improving the lubrication effect.

[0014] The present invention is further configured as follows: the end cover is a hard hollow shell.

[0015] By adopting the above technical solution, when the extrusion component sucks out or discharges the lubricating oil from the extrusion bag, the oil nozzle on the end cover will not be deformed, ensuring that the lubricating oil can be sprayed out through the oil nozzle.

[0016] The present invention is further configured as follows: the distance from the outer side of the connecting rod to the center of the output shaft is greater than the distance from the oil groove to the center of the output shaft.

[0017] By adopting the above technical solution, it is ensured that the empty bag on the connecting support rod can be immersed in the lubricating oil to absorb the lubricating oil when the mounting plate rotates.

[0018] The present invention is further configured as follows: the extrusion assembly includes a rotating shaft rotatably connected to the inner wall of the oil groove and an eccentric wheel installed outside the rotating shaft.

[0019] The present invention is further configured as follows: the belt transmission connects the rotating shaft and the output shaft.

[0020] By adopting the above technical solution, when the output shaft rotates, the rotating shaft is driven to rotate through the belt, and when the rotating shaft rotates, the eccentric wheel is driven to rotate, so that the eccentric wheel can squeeze the air bag to absorb the lubricating oil in the oil tank and then discharge it to lubricate the gear.

[0021] The present invention is further configured as follows: the oil groove is connected to an oil pipe having one end extending to an exterior of the housing.

[0022] By adopting the above technical solution, the setting of the oil pipe makes it convenient for an external oil pump to replenish lubricating oil to the oil tank.

[0023] The beneficial effects of the present invention are:

[0024] 1. The motor driven small train gearbox with splash lubrication is started by an external power source to drive the input shaft to rotate. When the input shaft rotates, the gear 1 meshes with the gear 2 to drive the transmission shaft 1 to rotate. The transmission shaft 1 meshes with the gear 3 and the gear 4 to drive the transmission shaft 2 to rotate. The transmission shaft 2 drives the output shaft to rotate through the bevel gear 1 and the bevel gear 2. The parts are transmitted through three stages, which can have a larger speed ratio and increase the speed of the output shaft.

[0025] 2. The motor driven small train gearbox uses splash lubrication. The bevel gear 1 can bring out the lubricating oil in the oil tank when it rotates. The splashed lubricating oil can be applied to other gears that need lubrication, which reduces the volume of the gearbox and improves the lubrication effect on the gears.

[0026] 3. The motor using splash lubrication drives the small train gearbox. When the output shaft rotates, the rotating shaft is driven to rotate by the belt. When the rotating shaft rotates, the eccentric wheel is driven to rotate. When the output shaft rotates, multiple air bags on the mounting plate are driven to contact and be squeezed by the two eccentric wheels in turn. When the air bag contacts the first eccentric wheel, the air bag is squeezed. After separating from the first eccentric wheel, the air bag resets and sucks the lubricating oil in the oil tank through the oil nozzle. When it rotates to contact and be squeezed by another eccentric wheel, the lubricating oil stored in the air bag is squeezed out and sprayed out through the oil nozzle, which can be sprayed on other gears, thereby improving the lubrication effect on the gears. In addition, no other power source is required to drive the entire lubrication process, which saves volume and energy while improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 is a side cross-sectional view of the present invention;

[0030] Figure 3 It is a schematic diagram of the connection structure between the extrusion component and the oil absorption component of the present invention.

[0031] In the figure, 1, housing 1; 2, housing 2; 3, support ear; 4, mounting hole; 5, input shaft; 6, output shaft; 7, transmission shaft 1; 8, transmission shaft 2; 9, gear 1; 10, gear 2; 11, bevel gear 1; 12, bevel gear 2; 13, gear 3; 14, gear 4; 15, oil tank; 16, oil pipe; 17, mounting plate; 18, connecting rod; 19, end cover; 20, air bag; 21, oil nozzle; 22, rotating shaft; 23, eccentric wheel; 24, belt. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-3 The present invention provides a motor-driven small train gearbox using splash lubrication, comprising a housing 1 and a housing 2 that are interconnected, a lug 3 installed on the housing 2, a mounting hole 4 provided on the lug 3, an input shaft 5 rotatably connected to the housing 1, and an output shaft 6 rotatably connected to the housing 2, a transmission assembly is connected to the input shaft 5, an oil groove 15 is installed on the housing 1, one end of the transmission assembly extends to the inside of the oil groove 15, an oil suction assembly is installed outside the output shaft 6, two extrusion assemblies are provided inside the oil groove 15, and a belt 24 is connected to the extrusion assembly and the output shaft 6.

[0034] The external power source starts and drives the input shaft 5 to rotate. When the input shaft 5 rotates, the output shaft 6 is driven to rotate through the transmission component. The transmission component can have a larger speed ratio through three-stage transmission, which increases the speed of the output shaft 6. The rotating component will rotate in the oil groove 15 during the transmission process, and the external oil pump is used to transport lubricating oil into the oil groove 15. The lubricating oil in the oil groove 15 contacts the rotating transmission component to roll up the lubricating oil. The splashed lubricating oil can be applied to the parts of the transmission component that need to be lubricated, thereby reducing the volume of the gearbox and improving the lubrication effect on the parts. At the same time, when the output shaft 6 rotates, the oil suction component is driven to rotate and extend to the inside of the oil groove 15. The output shaft 6 also uses the belt 24 to drive the extrusion component to rotate. When one extrusion component rotates, it squeezes the oil suction component, so that the oil suction component can absorb the lubricating oil in the oil groove 15, and then when it rotates to another extrusion component and is squeezed by it, the lubricating oil stored in the oil suction component is squeezed out and can be sprayed on the parts of the transmission component, thereby improving the lubrication effect on the parts. In addition, no other power source is required to drive the entire lubrication process, thereby saving volume and energy while having a better lubrication effect.

[0035] The transmission assembly includes a transmission shaft 17 and a transmission shaft 28 rotatably connected to the housing 1, a gear 19 installed on the outside of the input shaft 5, a gear 2 10 installed on the outside of the transmission shaft 17 and meshing with the gear 19, a bevel gear 11 installed on the outside of the output shaft 6, a bevel gear 2 12 installed on the outside of the transmission shaft 2 8 and meshing with the bevel gear 11, a gear 3 13 installed on the outside of the transmission shaft 2 8, and a gear 4 14 installed on the outside of the transmission shaft 7 and meshing with the gear 3 13.

[0036] The external power source is started to drive the input shaft 5 to rotate. When the input shaft 5 rotates, the gear 19 meshes with the gear 2 10 to drive the transmission shaft 1 7 to rotate. The transmission shaft 1 7 meshes with the gear 3 13 and the gear 4 14 to drive the transmission shaft 2 8 to rotate. The transmission shaft 2 8 drives the output shaft 6 to rotate through the bevel gear 1 11 and the bevel gear 2 12. Through the three-stage transmission, the parts can have a larger speed ratio and increase the speed of the output shaft 6.

[0037] The bottom of the bevel gear 11 extends to the inside of the oil groove 15. The bevel gear 11 can bring out the lubricating oil in the oil groove 15 when rotating. The splashed lubricating oil can be applied to other gears that need lubrication, thereby reducing the volume of the gear box and improving the lubrication effect on the gears.

[0038] The oil suction assembly includes a mounting plate 17 mounted on the outside of the output shaft 6, a connecting rod 18 mounted on the mounting plate 17, a hollow bag 20 mounted on the connecting rod 18, an end cover 19 connected to the hollow bag 20, and an oil nozzle 21 connected to the end cover 19. There are no less than four connecting rods 18 and they are distributed in a circular shape with equal distances on the mounting plate 17.

[0039] When the output shaft 6 rotates, it drives multiple empty bags 20 on the mounting plate 17 to contact and be squeezed by the extrusion components in turn. When the empty bag 20 contacts the first extrusion component, the empty bag 20 is squeezed, and then after separating from the first extrusion component, the empty bag 20 resets and sucks the lubricating oil in the oil tank 15 through the oil nozzle 21, and then rotates to contact and be squeezed by another extrusion component, the lubricating oil stored in the empty bag 20 is squeezed out and sprayed out through the oil nozzle 21, and can be sprayed on other gears, thereby improving the lubrication effect on the gears. In addition, no other power source is required to drive the entire lubrication process, which saves volume and energy while improving the lubrication effect.

[0040] The end cover 19 is a hard hollow shell. When the extrusion assembly sucks out or discharges the lubricating oil from the extrusion bag 20 , the oil nozzle 21 on the end cover 19 will not be deformed, ensuring that the lubricating oil can be sprayed out through the oil nozzle 21 .

[0041] The distance from the outer side of the connecting rod 18 to the center of the output shaft 6 is greater than the distance from the oil groove 15 to the center of the output shaft 6, ensuring that the hollow bag 20 on the connecting rod 18 can be immersed in the lubricating oil to absorb the lubricating oil when rotating with the mounting plate 17.

[0042] The extrusion assembly includes a rotating shaft 22 rotatably connected to the inner wall of the oil groove 15 and an eccentric wheel 23 installed outside the rotating shaft 22 . A belt 24 drives and connects the rotating shaft 22 and the output shaft 6 .

[0043] When the output shaft 6 rotates, the rotating shaft 22 is driven to rotate through the belt 24. When the rotating shaft 22 rotates, the eccentric wheel 23 is driven to rotate, so that the eccentric wheel 23 can squeeze the bladder 20 to absorb the lubricating oil in the oil groove 15 and then discharge it to lubricate the gear.

[0044] The oil groove 15 is connected to an oil pipe 16 having one end extending to the outside of the housing 1 . The oil pipe 16 is provided to facilitate an external oil pump to replenish lubricating oil to the oil groove 15 .

Claims

1. A motor-driven small train gearbox using splash lubrication, comprising a housing (1) and a housing (2) connected to each other, a lug (3) mounted on the housing (2), a mounting hole (4) provided on the lug (3), an input shaft (5) rotatably connected to the housing (1), and an output shaft (6) rotatably connected to the housing (2), characterized in that: A transmission assembly is connected in transmission between the output shaft (6) and the input shaft (5); an oil groove (15) is installed on the housing (1); one end of the transmission assembly extends into the interior of the oil groove (15); an oil suction assembly is installed outside the output shaft (6); two extrusion assemblies are arranged inside the oil groove (15); a belt (24) is connected in transmission between the extrusion assembly and the output shaft (6).

2. A motor-driven small train gearbox using splash lubrication according to claim 1, characterized in that: The transmission assembly comprises a transmission shaft 1 (7) and a transmission shaft 2 (8) rotatably connected to the housing 1 (1), a gear 1 (9) mounted on the outside of the input shaft (5), a gear 2 (10) mounted on the outside of the transmission shaft 1 (7) and meshing with the gear 1 (9), a bevel gear 1 (11) mounted on the outside of the output shaft (6), a bevel gear 2 (12) mounted on the outside of the transmission shaft 2 (8) and meshing with the bevel gear 1 (11), a gear 3 (13) mounted on the outside of the transmission shaft 2 (8), and a gear 4 (14) mounted on the outside of the transmission shaft 1 (7) and meshing with the gear 3 (13).

3. A motor-driven small train gearbox using splash lubrication according to claim 2, characterized in that: The bottom of the bevel gear 1 (11) extends to the inside of the oil groove (15).

4. A motor-driven small train gearbox using splash lubrication according to claim 3, characterized in that: The oil suction assembly comprises a mounting plate (17) mounted on the outside of the output shaft (6), a connecting rod (18) mounted on the mounting plate (17), a hollow bag (20) mounted on the connecting rod (18), an end cover (19) connected to the hollow bag (20), and an oil nozzle (21) connected to the end cover (19).

5. A motor-driven small train gearbox using splash lubrication according to claim 4, characterized in that: The connecting rods (18) are provided with no less than four and are distributed in an annular manner and at equal distances on the mounting plate (17).

6. A motor-driven small train gearbox using splash lubrication according to claim 5, characterized in that: The end cover (19) is a hard hollow shell.

7. A motor-driven small train gearbox using splash lubrication according to claim 6, characterized in that: The distance from the outer side of the connecting rod (18) to the center of the output shaft (6) is greater than the distance from the oil groove (15) to the center of the output shaft (6).

8. A motor-driven small train gearbox using splash lubrication according to claim 7, characterized in that: The extrusion assembly comprises a rotating shaft (22) rotatably connected to the inner wall of the oil groove (15) and an eccentric wheel (23) mounted outside the rotating shaft (22).

9. A motor-driven small train gearbox using splash lubrication according to claim 8, characterized in that: The belt (24) is drivingly connected to the rotating shaft (22) and the output shaft (6).

10. A motor-driven small train gearbox using splash lubrication according to claim 9, characterized in that: The oil groove (15) is connected to an oil pipe (16) having one end extending to the outside of the housing 1 (1).

Images