A high efficiency gear transmission

Abstract

The utility model discloses a high -efficient gear transmission device, it includes box, first gear shaft, second gear shaft, third gear shaft, first bevel gear is engaged with second bevel gear, third bevel gear respectively, and second gear shaft and third gear shaft coaxial line, its characterized in that: the left end surface of second gear shaft and the right end surface of third gear shaft are adjacent to set up, and the left end stage of second gear shaft and the right end stage of third gear shaft are set up and limit oil throwing device is set up on the stage, and the left and right ends of sleeve outer periphery are connected with the wheel disc respectively, and the outer periphery of wheel disc is provided with the vane, and a plurality of vanes are distributed along the circumference, and limit oil throwing device plays the role of axial location for second gear shaft, third gear shaft and plays the role of throwing oil. The utility model can effectively adjust axial force, improve the lubrication, cooling effect of gear, bearing to improve the transmission efficiency of gear transmission device, operating stability.

Description

Technical Field

[0001] This utility model relates to the field of gear transmission device technology, and specifically to a high-efficiency gear transmission device. Background Technology

[0002] An existing gear transmission device includes a gearbox housing, a first gear shaft, a second gear shaft, and a third gear shaft. A first bevel gear is mounted at one end of the first gear shaft, which is connected to the inner circumferential wall of a first rolling bearing bushing. A first seal is located on the outer side of the first rolling bearing. A second bevel gear is mounted at one end of the second gear shaft, which is connected to the right end cover of the housing via a second rolling bearing. A second seal is located on the outer side of the second rolling bearing. A third bevel gear is mounted at one end of the third gear shaft, which is connected to the left end cover of the housing via a third rolling bearing. A third seal is located on the outer side of the third rolling bearing. The first bevel gear meshes with both the second and third bevel gears, and the second and third gear shafts are coaxial.

[0003] However, the existing gear transmission device has a certain axial clearance between the second and third gear shafts. It does not have a limiting and oil-throwing device, so it cannot simultaneously play the role of axial limiting / axial thrust for the second and third gear shafts and oil-throwing. It cannot effectively adjust the axial force, and it still has the problem that the transmission efficiency and operational stability of the gear transmission device need to be further improved. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-efficiency gear transmission device. Through the design of the limiting oil throwing device, the limiting oil throwing device simultaneously serves as an axial limiting / axial thrust for the second and third gear shafts and also plays the role of throwing oil. It can effectively adjust the axial force, improve the lubrication and cooling effect of gears and bearings, thereby improving the transmission efficiency and operational stability of the gear transmission device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-efficiency gear transmission device includes a gearbox housing, a first gear shaft, a second gear shaft, and a third gear shaft. A first bevel gear is mounted at one end of the first gear shaft, which is connected to a first rolling bearing bushing via its inner circumferential wall. A first seal is located on the outer side of the first rolling bearing. A second bevel gear is mounted at one end of the second gear shaft, which is connected to the right end cover of the housing via a second rolling bearing. A second seal is located on the outer side of the second rolling bearing. A third bevel gear is mounted at one end of the third gear shaft, which is connected to the left end cover of the housing via a third rolling bearing. A seal is located on the outer side of the third rolling bearing. The third sealing element; the first bevel gear meshes with the second bevel gear and the third bevel gear respectively, and the second gear shaft and the third gear shaft are coaxial; characterized in that: the left end face of the second gear shaft is adjacent to the right end face of the third gear shaft, and a limiting oil-throwing device is sleeved on the left end platform of the second gear shaft and the right end platform of the third gear shaft, the limiting oil-throwing device serves to limit the axial movement of the second gear shaft and the third gear shaft and to throw oil; the limiting oil-throwing device includes a sleeve, a wheel, and blades, the left and right ends of the outer circumferential surface of the sleeve are respectively connected to the wheel, and the outer circumferential surface of the wheel is provided with blades, and multiple blades are distributed circumferentially.

[0007] Furthermore, a first oil injection hole is provided on the right end cover, and a second oil injection hole is provided on the left end cover. The oil pump is connected to the first oil injection hole and the second oil injection hole through the first oil supply pipe, and the oil pump is connected to the lubricating oil at the bottom of the housing through the second oil supply pipe.

[0008] Furthermore, a first clearance cavity is provided between the second rolling bearing and the second seal, and the first oil injection hole is connected to the first clearance cavity; a second clearance cavity is provided between the third rolling bearing and the third seal, and the second oil injection hole is connected to the second clearance cavity.

[0009] Furthermore, the second gear shaft is provided with a first central axial hole, a first radial hole, and a second radial hole. Multiple first radial holes are distributed circumferentially, and multiple second radial holes are distributed circumferentially. The first radial holes are connected to the first clearance cavity, and the first radial holes are connected to the second radial holes through the first central axial hole. The second radial holes are connected to the inner circumferential surface of the sleeve of the limiting oil throwing device.

[0010] Furthermore, the third gear shaft is provided with a second central axial hole, a third radial hole, and a fourth radial hole. Multiple third radial holes are distributed circumferentially, and multiple fourth radial holes are distributed circumferentially. The third radial holes are connected to the second clearance cavity. The third radial holes are connected to the fourth radial holes through the second central axial hole. The fourth radial holes are connected to the inner circumferential surface of the sleeve of the limiting oil throwing device.

[0011] Furthermore, the sleeve is fitted onto the left end platform of the second gear shaft and the right end platform of the third gear shaft. The inner circumferential surface and the left and right end faces of the sleeve are connected to the corresponding parts of the platform of the second gear shaft and the third gear shaft in a liquid sliding bearing manner. The limiting oil slinger is a passive rotation device.

[0012] Furthermore, the inner circumferential surface of the sleeve is provided with a left-end spiral groove and a right-end spiral groove, with the left-end spiral groove and the right-end spiral groove rotating in opposite directions to promote the flow of oil to the left and right ends of the sleeve.

[0013] Furthermore, the corresponding parts of the stage of the second gear shaft and the third gear shaft are provided with spiral grooves that cooperate with the left end spiral groove and the right end spiral groove, so as to further promote the flow of oil to the left and right ends of the sleeve; the left and right end faces of the sleeve are provided with end face spiral grooves, and the corresponding parts of the stage of the second gear shaft and the third gear shaft are provided with spiral grooves that cooperate with the end face spiral grooves, so as to promote the flow of oil to the radial outer periphery of the sleeve.

[0014] Furthermore, the outer surface of the wheel is provided with radial grooves, and multiple radial grooves are distributed circumferentially. The radial grooves extend from the radial root of the wheel to the radial top. The radial grooves are used to promote the flow of oil to the radial outer periphery of the wheel and improve the oil-throwing effect.

[0015] Furthermore, an arc-shaped transition section is provided on the radial inner end of the outer surface of the wheel, and correspondingly, the radial groove includes a radial section and an adjacent arc-shaped section.

[0016] This utility model discloses a high-efficiency gear transmission device. Through the design of a limiting and oil-throwing device, the limiting and oil-throwing device simultaneously serves as an axial limiting / axial thrust device for the second and third gear shafts and also functions as an oil-throwing device. It can effectively adjust the axial force, improve the lubrication and cooling effect of gears and bearings, thereby improving the transmission efficiency and operational stability of the gear transmission device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the high-efficiency gear transmission device of this utility model;

[0018] Figure 2 This is a partial structural diagram of the high-efficiency gear transmission device of this utility model;

[0019] Figure 3 This is a partially enlarged structural schematic diagram of the high-efficiency gear transmission device of this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting oil-throwing device of the high-efficiency gear transmission device of this utility model.

[0021] In the diagram: Gearbox housing 1, First gear shaft 2, Second gear shaft 3, Third gear shaft 4, Limiting oil slinger device 5, Left end cover 11, Right end cover 12, Second rolling bearing 13, Second seal 14, First oil injection hole 15, Second oil injection hole 16, First bevel gear 21, Bushing 22, First rolling bearing 23, First seal 24, Second bevel gear 31, First central axial hole 32, First radial hole 33, Second radial hole 34, Third bevel gear 41, Second central axial hole 42, Third radial hole 43, Fourth radial hole 44, Sleeve 51, Wheel disc 52, Blade 53, Spiral groove 54, Radial groove 55, Arc-shaped transition section 56. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] like Figure 1-4As shown, a high-efficiency gear transmission device includes a gearbox housing 1, a first gear shaft 2, a second gear shaft 3, and a third gear shaft 4. The first gear shaft 2, second gear shaft 3, and third gear shaft 4 are installed inside the housing 1. A first bevel gear 21 is mounted at one end of the first gear shaft 2, and the first gear shaft 2 is connected to the inner peripheral wall of a bushing 22 via a first rolling bearing 23. A first seal 24 is provided on the outer side of the first rolling bearing 23. A second bevel gear 31 is mounted at one end of the second gear shaft 3, and the second gear shaft 3 is connected to the right end cover 12 of the housing 1 via a second rolling bearing 13. A second seal 14 is provided on the outer side of the second rolling bearing 13. The third gear... A third bevel gear 41 is provided at one end of shaft 4. The third gear shaft 4 is connected to the left end cover 11 of housing 1 through a third rolling bearing. A third seal is provided on the outside of the third rolling bearing. The first bevel gear 21 meshes with the second bevel gear 31 and the third bevel gear 41 respectively, and the second gear shaft 3 and the third gear shaft 4 are coaxial. The feature is that the left end face of the second gear shaft 3 is adjacent to the right end face of the third gear shaft 4, and a limiting oil-throwing device 5 is sleeved on the left end platform of the second gear shaft 3 and the right end platform of the third gear shaft 4. The limiting oil-throwing device 5 serves to limit the axial movement of the second gear shaft 3 and the third gear shaft 4 and to throw oil.

[0026] In one embodiment, a first oil injection hole 15 is provided on the right end cover 12, and a second oil injection hole 16 is provided on the left end cover 11. The oil pump is connected to the first oil injection hole 15 and the second oil injection hole 16 respectively through the first oil supply pipe. The oil pump is connected to the lubricating oil at the bottom of the housing 1 through the second oil supply pipe, so as to realize the circulation lubrication and cooling of the gears and bearings by the lubricating oil.

[0027] The second rolling bearing 13 and the second seal 14 have a first clearance cavity, and the first oil injection hole 15 is connected to the first clearance cavity; the third rolling bearing and the third seal have a second clearance cavity, and the second oil injection hole 16 is connected to the second clearance cavity.

[0028] In one embodiment, the second gear shaft 3 is provided with a first central axial hole 32, a first radial hole 33, and a second radial hole 34. The first radial holes 33 are distributed circumferentially, and the second radial holes 34 are distributed circumferentially. The first radial holes 33 are connected to the first gap cavity, and the first radial holes 33 are connected to the second radial holes 34 through the first central axial hole 32. The second radial holes 34 are connected to the inner circumferential surface of the sleeve 51 of the limiting oil throwing device 5.

[0029] The third gear shaft 4 has a second central axial hole 42, a third radial hole 43, and a fourth radial hole 44. Multiple third radial holes 43 are distributed circumferentially, and multiple fourth radial holes 44 are distributed circumferentially. The third radial holes 43 are connected to the second clearance cavity. The third radial holes 43 are connected to the fourth radial holes 44 through the second central axial hole 42. The fourth radial holes 44 are connected to the inner circumferential surface of the sleeve 51 of the limiting oil throwing device 5.

[0030] like Figure 1-4 As shown, the arrow "→" indicates the direction of lubricating oil flow.

[0031] The limiting oil-throwing device 5 includes a sleeve 51, a wheel 52, and blades 53. The left and right ends of the outer circumference of the sleeve 51 are respectively connected to the wheel 52. The outer circumference of the wheel 52 is provided with blades 53, and multiple blades 53 are distributed circumferentially. The sleeve 51 is sleeved on the left end platform of the second gear shaft 3 and the right end platform of the third gear shaft 4. The inner circumference and the left and right end platforms of the sleeve 51 are connected to the corresponding parts of the platform of the second gear shaft 3 and the third gear shaft 4 in a liquid sliding bearing manner. The limiting oil-throwing device 5 is passively rotated.

[0032] In one embodiment, the inner circumferential surface of the sleeve 51 is provided with a left-end spiral groove and a right-end spiral groove 54. The spiral directions of the left-end spiral groove and the right-end spiral groove 54 are opposite to promote the flow of oil to the left and right ends of the sleeve 51.

[0033] The corresponding parts of the second gear shaft 3 and the third gear shaft 4 are provided with spiral grooves that cooperate with the left-end spiral groove and the right-end spiral groove 54 to further promote the flow of oil to the left and right ends of the sleeve 51.

[0034] In one embodiment, the left and right end faces of the sleeve 51 are provided with end face spiral grooves, and the corresponding parts of the stage of the second gear shaft 3 and the third gear shaft 4 are provided with spiral grooves that cooperate with the end face spiral grooves, so as to promote the flow of oil to the radial outer periphery of the sleeve 51.

[0035] In one embodiment, the outer surface of the wheel 52 is provided with radial grooves 55. Multiple radial grooves 55 are distributed circumferentially. The radial grooves 55 extend from the radial root of the wheel 52 to the radial top. The radial grooves 55 are used to promote the flow of oil to the radial outer periphery of the wheel 52 and improve the oil-throwing effect.

[0036] An arc-shaped transition portion 56 is provided on the radial inner end of the outer side of the wheel 52. Correspondingly, the radial groove 55 includes a radial segment and an adjacent arc-shaped segment.

[0037] This utility model discloses a high-efficiency gear transmission device. Its working principle / process includes: an oil pump draws lubricating oil from the bottom of the housing 1 and supplies it to the first and second clearance cavities through the first oil injection hole 15 and the second oil injection hole 16. Then, the oil is sequentially supplied through the first radial hole 33, the first central axial hole 32, and the second radial hole 34 to the liquid sliding bearing gap between the stage of the second gear shaft 3 and the sleeve 51 of the limiting oil-throwing device 5. The oil flowing out of the liquid sliding bearing gap is thrown towards the three bevel gears by the action of the wheel 52 and the blades 53. The flow path between the second clearance cavity and the fourth radial hole 44 is the same as described above. The limiting oil-throwing device 5 serves to axially limit / impede the second gear shaft 3 and the third gear shaft 4, and also functions as an oil-throwing device.

[0038] This utility model discloses a high-efficiency gear transmission device. Through the design of the limiting oil throwing device 5, the limiting oil throwing device 5 simultaneously serves as an axial limiting / axial thrust for the second gear shaft 3 and the third gear shaft 4, and also plays a role in throwing oil. It can effectively adjust the axial force, improve the lubrication and cooling effect of gears and bearings, thereby improving the transmission efficiency and operational stability of the gear transmission device.

[0039] 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 high-efficiency gear transmission device, comprising a gearbox housing (1), a first gear shaft (2), a second gear shaft (3), and a third gear shaft (4); a first bevel gear (21) is provided at one end of the first gear shaft, and the first gear shaft is connected to the inner circumferential wall of the bushing via a first rolling bearing (23); a first seal (24) is provided on the outer side of the first rolling bearing; a second bevel gear (31) is provided at one end of the second gear shaft, and the second gear shaft is connected to the right end cover of the housing via a second rolling bearing (13); a second seal (14) is provided on the outer side of the second rolling bearing; a third bevel gear (41) is provided at one end of the third gear shaft, and the third gear shaft is connected to the left end cover of the housing via a third rolling bearing; a third seal is provided on the outer side of the third rolling bearing; the first bevel gear meshes with the second bevel gear and the third bevel gear respectively, and the second gear shaft and the third gear shaft are coaxial; characterized in that: The left end face of the second gear shaft is adjacent to the right end face of the third gear shaft, and a limiting oil-throwing device (5) is sleeved on the left end platform of the second gear shaft and the right end platform of the third gear shaft. The limiting oil-throwing device includes a sleeve (51), a wheel (52), and blades (53). The left and right ends of the outer circumference of the sleeve are respectively connected to the wheel. The outer circumference of the wheel is provided with blades. Multiple blades are distributed along the circumference. The limiting oil-throwing device is used for axial limiting of the second gear shaft and the third gear shaft and also plays the role of oil throwing.

2. The high-efficiency gear transmission device as described in claim 1, characterized in that, The right end cover (12) has a first oil injection hole (15), and the left end cover (11) has a second oil injection hole (16). The oil pump is connected to the first oil injection hole and the second oil injection hole through the first oil supply pipe. The oil pump is connected to the lubricating oil at the bottom of the box through the second oil supply pipe.

3. The high-efficiency gear transmission device as described in claim 2, characterized in that, The second rolling bearing and the second seal have a first clearance cavity, and the first oil injection hole is connected to the first clearance cavity; the third rolling bearing and the third seal have a second clearance cavity, and the second oil injection hole is connected to the second clearance cavity.

4. The high-efficiency gear transmission device as described in claim 3, characterized in that, The second gear shaft has a first central axial hole (32), a first radial hole (33), and a second radial hole (34). Multiple first radial holes are distributed circumferentially, and multiple second radial holes are distributed circumferentially. The first radial hole is connected to the first gap cavity. The first radial hole is connected to the second radial hole through the first central axial hole. The second radial hole is connected to the inner circumferential surface of the sleeve (51) of the limiting oil throwing device.

5. The high-efficiency gear transmission device as described in claim 4, characterized in that, The third gear shaft has a second central axial hole (42), a third radial hole (43), and a fourth radial hole (44). Multiple third radial holes are distributed circumferentially, and multiple fourth radial holes are distributed circumferentially. The third radial holes are connected to the second clearance cavity. The third radial holes are connected to the fourth radial holes through the second central axial hole. The fourth radial holes are connected to the inner circumferential surface of the sleeve of the limiting oil throwing device.

6. The high-efficiency gear transmission device as described in claim 5, characterized in that, The sleeve is fitted onto the left end platform of the second gear shaft and the right end platform of the third gear shaft. The inner circumferential surface and the left and right end faces of the sleeve are connected to the corresponding parts of the platform of the second gear shaft and the third gear shaft in a liquid sliding bearing manner. The limiting oil slinger is a passive rotation device.

7. The high-efficiency gear transmission device as described in claim 6, characterized in that, The inner circumferential surface of the sleeve (51) is provided with a left-end spiral groove and a right-end spiral groove (54). The spiral directions of the left-end spiral groove and the right-end spiral groove are opposite to promote the flow of oil to the left and right ends of the sleeve.

8. The high-efficiency gear transmission device as described in claim 7, characterized in that, The corresponding parts of the stage of the second gear shaft and the third gear shaft are provided with spiral grooves that cooperate with the left end spiral groove and the right end spiral groove, so as to further promote the flow of oil to the left and right ends of the sleeve; the left and right end faces of the sleeve (51) are provided with end face spiral grooves, and the corresponding parts of the stage of the second gear shaft and the third gear shaft are provided with spiral grooves that cooperate with the end face spiral grooves, so as to promote the flow of oil to the radial outer periphery of the sleeve.

9. The high-efficiency gear transmission device as described in claim 8, characterized in that, The outer side of the wheel is provided with radial grooves (55). Multiple radial grooves are distributed circumferentially. The radial grooves extend from the radial root of the wheel to the radial top. The radial grooves are used to promote the flow of oil to the radial outer periphery of the wheel and improve the oil-throwing effect.

10. A high-efficiency gear transmission device as described in claim 9, characterized in that, An arc-shaped transition section (56) is provided on the radial inner end of the outer side of the wheel. Correspondingly, the radial groove includes a radial section and an adjacent arc-shaped section.

Images