A lubricated gear assembly for a gearbox

Abstract

The utility model discloses a lubrication type gear assembly of gearbox, it includes axle cylinder, gear, bearing assembly, first disc, second disc, the outer periphery of axle cylinder is installed with bearing assembly, the outer periphery of bearing assembly is installed with gear, and the outer periphery of the left and right two ends of axle cylinder is connected with first disc, second disc respectively, its characterized in that: the oil storage cavity is seted up in the axle cylinder, and the right end surface of axle cylinder is seted up with the oil supply hole, and the outer periphery of axle cylinder upside is seted up with the oil inlet, and the oil inlet is linked with the bearing cavity of bearing assembly and communicates, the small gap and the sealed rotatable connection between the left end surface of gear and the right end surface of first disc, and the small gap and the sealed rotatable connection between the right end surface of gear and the left end surface of second disc. The utility model can improve the lubrication effect of gear assembly, the operating stability to improve the service life of gearbox.

Description

Technical Field

[0001] This utility model relates to the field of gearbox / gearbox technology, specifically to a lubricated gear assembly for a gearbox. Background Technology

[0002] Existing gearboxes include a shaft, gears, bearing assemblies, a first disc, and a second disc. The bearing assembly is mounted on the outer circumferential surface of the shaft, and the gear is mounted on the outer circumferential surface of the bearing assembly. The first and second discs are connected to the outer circumferential surfaces of the left and right ends of the shaft, respectively. The gear and bearing assembly are located between the first and second discs, and the gear rotates relative to the shaft. However, existing gearboxes still suffer from poor gear lubrication, failing to automatically activate the oil pump to supply oil to the oil reservoir based on the piston position, thus requiring further improvement in operational stability. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a lubricated gear assembly for a transmission. This assembly supplies lubricating oil to an oil reservoir via an oil pump and / or an oil tank. The lubricating oil is then supplied to the bearing chamber through an oil inlet to lubricate the gear assembly. This improves the lubrication effect and operational stability of the gear assembly, thereby extending the service life of the transmission. A piston is slidably connected within the oil reservoir. The piston can move axially based on the pressure and / or volume of the oil in the reservoir. A position sensor detects / senses the position of the piston, thereby activating the oil pump to supply oil to the reservoir based on the piston's position, ensuring a stable oil level in the bearing chamber of the bearing assembly.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A lubricated gear assembly for a gearbox includes a shaft cylinder, a gear, a bearing assembly, a first disc, and a second disc. The bearing assembly is mounted on the outer circumferential surface of the shaft cylinder, and the gear is mounted on the outer circumferential surface of the bearing assembly. The outer circumferential surfaces of the left and right ends of the shaft cylinder are respectively connected to the first disc and the second disc. The gear and the bearing assembly are located between the first disc and the second disc. The shaft cylinder has an oil reservoir containing lubricating oil. An oil supply hole is provided on the right end face of the shaft cylinder, connected to an oil pump and / or an oil tank via an oil supply pipe. An oil inlet hole is provided on the upper side of the outer circumferential surface of the shaft cylinder, communicating with the bearing chamber of the bearing assembly. The bearing assembly includes rolling elements and a cage. Multiple rolling elements are evenly distributed circumferentially along the cage. The left end face of the gear is rotatably connected to the right end face of the first disc with a small gap and in a sealed manner. The right end face of the gear is rotatably connected to the left end face of the second disc with a small gap and in a sealed manner.

[0006] Furthermore, the shaft cylinder, the first disc, and the second disc are fixed components, while the gear is a rotating component.

[0007] Furthermore, the gear assembly is part of a planetary gear assembly, with the gear meshing with the internal gear ring, and the shaft sleeve or first disk connected to the planetary gear set housing.

[0008] Furthermore, a sealing plate is provided on the left end face of the cylinder, making the oil storage chamber an oil chamber with a certain pressure. A piston is slidably connected inside the oil storage chamber. One end of the spring is connected to the sealing plate, and the other end is connected to the piston. The piston can move axially based on the pressure and / or volume of the oil in the oil storage chamber.

[0009] Furthermore, a position sensor is provided on the inner circumferential surface of the cylinder. The position sensor is used to detect the position of the piston, thereby starting the oil pump to supply oil to the oil storage chamber based on the position of the piston.

[0010] Furthermore, the sealing plate has external threads, and the left end of the shaft cylinder has internal threads. The sealing plate is threadedly connected to the left end of the shaft cylinder, and the piston's movement distance can be adjusted by adjusting the screw-in depth of the sealing plate.

[0011] Furthermore, the outer circumferential surface of the piston is provided with a guide protrusion, and the inner circumferential surface of the cylinder is provided with a guide groove, with the guide protrusion and the guide groove slidingly engaged.

[0012] Furthermore, the rolling element is a cylindrical rolling element, and the axial length of the rolling element is 75%-90% of the axial length of the gear.

[0013] A transmission includes a planetary gear assembly, a lubricating oil supply system, and a control system, wherein the planetary gear assembly includes the aforementioned lubricated gear assembly.

[0014] This utility model discloses a lubricated gear assembly for a gearbox, which supplies lubricating oil to the oil reservoir through an oil pump and / or oil tank, and the lubricating oil is supplied to the bearing chamber through the oil inlet to lubricate the gear assembly. This can improve the lubrication effect and operational stability of the gear assembly, thereby increasing the service life of the gearbox.

[0015] In this invention, a piston is slidably connected inside the oil storage chamber. The piston can move axially based on the pressure and / or volume of the oil in the oil storage chamber. A position sensor is used to detect / sensor the position of the piston, thereby starting the oil pump to supply oil to the oil storage chamber according to the position of the piston, so as to ensure that there is a stable amount of oil in the bearing chamber of the bearing assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the lubricated gear assembly of the gearbox of this utility model;

[0017] Figure 2 This is a side view of the lubricated gear assembly of the gearbox of this utility model.

[0018] In the figure: 1. Shaft cylinder; 2. Gear; 3. Bearing assembly; 4. First disc; 5. Second disc; 11. Oil reservoir; 12. Oil supply hole; 13. Oil inlet hole; 14. Sealing plate; 15. Piston; 16. Spring; 17. Position sensor; 31. Rolling element; 32. Cage. Detailed Implementation

[0019] To make the technical solution and advantages of this utility model clearer, the technical solution of this utility model will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this utility model, and are only used to explain this utility model, not to limit it. It should be noted that, for ease of description, only the parts / structures related to this utility model are shown in the accompanying drawings. Other related parts can be referred to with ordinary design. In the absence of conflict, the embodiments and technical features in the embodiments of this utility model can be combined with each other to obtain new embodiments.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. Furthermore, unless otherwise defined, the technical or scientific terms used in the description of this utility model should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figure 1-2 As shown, a lubricated gear assembly for a gearbox includes a shaft cylinder 1, a gear 2, a bearing assembly 3, a first disc 4, and a second disc 5. The bearing assembly 3 is mounted on the outer circumferential surface of the shaft cylinder 1, and the gear 2 is mounted on the outer circumferential surface of the bearing assembly 3. The first disc 4 and the second disc 5 are respectively connected to the outer circumferential surfaces of the left and right ends of the shaft cylinder 1. The gear 2 and the bearing assembly 3 are located between the first disc 4 and the second disc 5. The shaft cylinder 1 is characterized by having an oil reservoir 11 inside, which stores lubricating oil. The right end face of the shaft cylinder 1 is... An oil supply hole 12 is provided, which is connected to an oil pump and / or an oil tank through an oil supply pipe. An oil inlet hole 13 is provided on the outer circumferential surface of the shaft cylinder 1, which is connected to the bearing chamber of the bearing assembly 3. The bearing assembly 3 includes rolling elements 31 and a cage 32. Multiple rolling elements 31 are evenly distributed around the cage 32. The left end face of the gear 2 is rotatably connected to the right end face of the first disk 4 with a small gap and in a sealed manner. The right end face of the gear 2 is rotatably connected to the left end face of the second disk 5 with a small gap and in a sealed manner.

[0023] The shaft cylinder 1, the first disc 4, and the second disc 5 are fixed components, while the gear 2 is a rotating component.

[0024] The lubricated gear assembly supplies lubricating oil to the oil reservoir 11 through an oil pump and / or oil tank. The lubricating oil is supplied to the bearing chamber through the oil inlet 13 to lubricate the gear assembly. This can improve the lubrication effect and operational stability of the gear assembly, thereby increasing the service life of the gearbox.

[0025] In one embodiment, the gear assembly is part of a planetary gear assembly, with gear 2 meshing with an internal gear ring / internal gear circumference, and the shaft sleeve 1 or the first disk 4 connected to the planetary gear set housing.

[0026] In one embodiment, a sealing plate 14 is provided on the left end face of the cylinder 1, so that the oil storage chamber 11 is an oil chamber with a certain pressure. A piston 15 is slidably connected in the oil storage chamber 11. One end of the spring 16 is connected to the sealing plate 14 and the other end is connected to the piston 15. The piston 15 can move axially based on the pressure and / or volume of the oil in the oil storage chamber 11.

[0027] A position sensor 17 is provided on the inner circumferential surface of the shaft cylinder 1. The position sensor 17 is used to detect / sensor the position of the piston 15, and thereby start the oil pump to supply oil to the oil reservoir 11 according to the position of the piston 15. For example, when the piston 15 moves to the position sensor 17 near the right side of the shaft cylinder 1, it means that the amount of oil in the oil reservoir 11 has dropped to the preset low volume. At this time, the transmission control system receives the signal and starts the oil pump to supply oil to the oil reservoir 11, so that the amount of oil in the oil reservoir 11 reaches the preset high volume, thereby ensuring a stable amount of oil in the bearing chamber of the bearing assembly 3.

[0028] In one embodiment, the sealing plate 14 has an external thread, and the left end of the shaft cylinder 1 has an internal thread. The sealing plate 14 is threadedly connected to the left end of the shaft cylinder 1. The stroke / movement distance of the piston 15 can be adjusted by adjusting the screw-in depth of the sealing plate 14.

[0029] The outer circumferential surface of the piston 15 may be provided with a guide protrusion, and the inner circumferential surface of the cylinder 1 may be provided with a guide groove. The guide protrusion and the guide groove slide together to improve the stability and guidance of the axial movement of the piston 15.

[0030] The rolling element 31 is a cylindrical rolling element, and the axial length of the rolling element 31 is 75%-90% of the axial length of the gear 2.

[0031] A transmission includes a planetary gear assembly, a lubricating oil supply system, and a control system, wherein the planetary gear assembly includes the aforementioned lubricated gear assembly.

[0032] The present invention discloses a lubricated gear assembly for a gearbox, which supplies lubricating oil to the oil reservoir 11 through an oil pump and / or oil tank, and supplies the lubricating oil to the bearing chamber through the oil inlet 13 to lubricate the gear assembly. This can improve the lubrication effect and operational stability of the gear assembly, thereby increasing the service life of the gearbox.

[0033] In this invention, a piston 15 is slidably connected inside the oil storage chamber 11. The piston 15 can move axially based on the pressure and / or volume of the oil in the oil storage chamber 11. The position sensor 17 is used to detect / sensor the position of the piston 15, thereby starting the oil pump to supply oil to the oil storage chamber 11 according to the position of the piston 15, so as to ensure that there is a stable amount of oil in the bearing chamber of the bearing assembly 3.

[0034] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. It is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lubricated gear assembly for a gearbox, comprising a shaft sleeve (1), a gear (2), a bearing assembly (3), a first disc (4), and a second disc (5), wherein the bearing assembly is mounted on the outer circumferential surface of the shaft sleeve, the gear is mounted on the outer circumferential surface of the bearing assembly, and the first disc and the second disc are respectively connected to the outer circumferential surfaces of the left and right ends of the shaft sleeve, and the gear and the bearing assembly are located between the first disc and the second disc; characterized in that: An oil storage chamber (11) is provided inside the shaft cylinder, which stores lubricating oil. An oil supply hole (12) is provided on the right end face of the shaft cylinder. The oil supply hole is connected to the oil pump and / or oil tank through an oil supply pipe. An oil inlet hole (13) is provided on the outer circumferential surface of the shaft cylinder. The oil inlet hole is connected to the bearing chamber of the bearing assembly. The bearing assembly includes rolling elements (31) and a cage (32). Multiple rolling elements are evenly distributed along the circumference of the cage. The left end face of the gear is rotatably connected to the right end face of the first disk with a small gap and in a sealed manner. The right end face of the gear is rotatably connected to the left end face of the second disk with a small gap and in a sealed manner.

2. The lubricated gear assembly of a transmission as described in claim 1, characterized in that, The shaft, the first disc, and the second disc are fixed components, while the gear is a rotating component.

3. The lubricated gear assembly of a transmission as described in claim 2, characterized in that, The gear assembly is part of a planetary gear assembly, with the gear meshing with the internal gear ring and the shaft sleeve or first disk connected to the planetary gear set housing.

4. A lubricated gear assembly for a transmission as described in claim 2, characterized in that, A sealing plate (14) is provided on the left end face of the cylinder, so that the oil storage chamber is an oil chamber with a certain pressure. A piston (15) is slidably connected in the oil storage chamber. One end of the spring (16) is connected to the sealing plate and the other end is connected to the piston. The piston can move axially based on the pressure and / or volume of the oil in the oil storage chamber.

5. A lubricated gear assembly for a transmission as described in claim 4, characterized in that, A position sensor (17) is provided on the inner circumferential surface of the shaft. The position sensor is used to detect the position of the piston, thereby starting the oil pump to supply oil to the oil storage chamber according to the position of the piston.

6. A lubricated gear assembly for a transmission as described in claim 5, characterized in that, The sealing plate has external threads, and the left end of the shaft cylinder has internal threads. The sealing plate is threadedly connected to the left end of the shaft cylinder. The piston's movement distance can be adjusted by adjusting the screw-in depth of the sealing plate.

7. A lubricated gear assembly for a transmission as described in claim 6, characterized in that, The piston has a guide protrusion on its outer circumferential surface and a guide groove on its inner circumferential surface. The guide protrusion and the guide groove slide together.

8. A lubricated gear assembly for a transmission as described in claim 7, characterized in that, The rolling elements are cylindrical, and their axial length is 75%-90% of the gear's axial length.

9. A transmission comprising a planetary gear assembly, a lubricating oil supply system, and a control system, wherein the planetary gear assembly comprises a lubricated gear assembly of a transmission as described in claim 5 or 6.

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