Lubricating structure for gear coupling

Abstract

A lubricating structure for a gear coupling, comprising a box body (5), a first mechanism, a second mechanism, and oil inlet pipe assemblies (14), wherein the first mechanism and the second mechanism are arranged opposite to each other; a lubricating oil groove (22) is arranged around the periphery of a first support bearing (6) and a second support bearing (20) to form an oil chamber; toothed sleeve connecting oil holes (4) are in communication with oil inlet holes (15), a first oil supply hole (3) and a corresponding second oil supply hole (23) are arranged side by side and are in communication with the corresponding toothed sleeve connecting oil hole, a first spray point (28) is provided at the end of each first oil supply hole distant from the corresponding toothed sleeve connecting oil hole, and a second spray point (27) is provided at the end of each second oil supply hole distant from the corresponding toothed sleeve connecting oil hole; the oil inlet pipe assemblies are mounted on the box body, and the oil inlet pipe assemblies are in communication with the oil inlet holes and are connected to external lubricating piping of a gearbox. The lubricating structure can mitigate the problems of wear and heat generation between inner teeth and outer teeth, and achieve the effects of lubricating and cooling.

Description

Lubricating structure of gear coupling TECHNICAL FIELD

[0001] The present application relates to the technical field of gear coupling, in particular to a lubricating structure of gear coupling. BACKGROUND

[0002] The gear coupling is an important mechanical basic component, which is used to connect the driving shaft and the driven shaft, and transmit torque to make the two shafts rotate together. The gear coupling is widely used between transmission shafts in gearboxes with large torque transmission and limited installation space, such as planetary gearboxes, high-speed gearboxes, large-scale hoist reducers, etc. During operation, the movement of the gear coupling is a combination of swing and roll, so there is a relatively large reciprocating motion between the inner teeth and the outer teeth, which causes wear and damage to the tooth surface. On the other hand, heat is generated due to the friction between the inner teeth and the outer teeth, especially at high speed, which further aggravates the tooth surface burn and wear damage. SUMMARY

[0003] In order to improve the wear and heat problems between the inner teeth and the outer teeth, the present application provides a lubricating structure of gear coupling.

[0004] The lubricating structure of gear coupling provided by the present application adopts the following technical scheme:

[0005] A lubricating structure of gear coupling, comprising a box body, a first mechanism, a second mechanism and an oil inlet pipe assembly, the first mechanism and the second mechanism are oppositely arranged;

[0006] The first mechanism comprises a first inner tooth sleeve, a first outer tooth sleeve, a first support bearing and a first transmission shaft; the first transmission shaft is installed on the box body through the first support bearing; the first outer tooth sleeve is coaxially arranged on the first transmission shaft;

[0007] The second mechanism comprises a second inner tooth sleeve, a second outer tooth sleeve, a second support bearing and a second transmission shaft, the second transmission shaft is installed on the box body through the second support bearing, and the second outer tooth sleeve is coaxially arranged on the second transmission shaft;

[0008] The first inner tooth sleeve and the second inner tooth sleeve are connected to each other;

[0009] The box is provided with a lubricating oil groove, a first oil supply hole, a second oil supply hole, a gear sleeve connecting oil hole and an oil inlet hole; the lubricating oil groove is arranged around the outer rings of the first support bearing and the second support bearing to form an oil cavity; the gear sleeve connecting oil hole is in communication with the oil inlet hole, the first oil supply hole and the second oil supply hole are in parallel communication with the gear sleeve connecting oil hole, a first spraying point is arranged at one end of the first oil supply hole away from the gear sleeve connecting oil hole, a second spraying point is arranged at one end of the second oil supply hole away from the gear sleeve connecting oil hole, and the first spraying point and the second spraying point are arranged towards the first inner gear sleeve, the first outer gear sleeve, the second outer gear sleeve and the second inner gear sleeve.

[0010] The oil inlet pipe assembly is installed on the box and is in communication with the oil inlet hole and circumscribes the lubricating pipeline of the gear box.

[0011] By adopting the above technical scheme, the gear coupling lubricating device of the present application reasonably uses the pressure oil of the gear box lubricating system, the lubricating oil is introduced into the oil inlet hole through the lubricating pipeline and the oil inlet pipe assembly, then introduced into the first oil supply hole and the second oil supply hole through the gear sleeve connecting oil hole, and sprayed out towards the first inner gear sleeve, the first outer gear sleeve, the second outer gear sleeve and the second inner gear sleeve through the first spraying point and the second spraying point, so as to realize the lubrication and heat dissipation of the gear coupling, and improve the wear and heat problems between the inner teeth and the outer teeth.

[0012] Optionally, the box is also provided with a lubricating oil groove, the lubricating oil groove is arranged around the outer rings of the first support bearing and the second support bearing to form an annular oil cavity, the gear sleeve connecting oil hole is arranged along the outer ring of the lubricating oil groove, and one end of the gear sleeve connecting oil hole away from the oil inlet hole is in communication with the lubricating oil groove.

[0013] By adopting the above technical scheme, the number of gear sleeve connecting oil holes can be increased or decreased according to the actual oil requirement, multi-point spraying is realized, and the lubrication and cooling effect is improved.

[0014] Optionally, a first oil quantity control plug is arranged at the first spraying point, and a second oil quantity control plug is arranged at the second spraying point.

[0015] By adopting the above technical scheme, the oil quantity at the first spraying point and the second spraying point can be controlled.

[0016] Optionally, the first spraying point is towards the meshing circles of the first inner gear sleeve and the first outer gear sleeve, and towards the meshing circles of the second outer gear sleeve and the second inner gear sleeve.

[0017] By adopting the above technical scheme, the lubricating oil can lubricate and cool the meshing positions of the first inner gear sleeve and the first outer gear sleeve, and the meshing positions of the second outer gear sleeve and the second inner gear sleeve.

[0018] Optionally, a plurality of waist-shaped holes are formed on the wheel flanks of the first and second outer tooth sleeves, and the second spray point sprays towards the position of the waist-shaped hole.

[0019] By using the above technical solution, the lubricating oil can enter the inside of the gear coupling through the waist-shaped hole to lubricate the inside of the gear coupling.

[0020] Optionally, bearing oil grooves are formed on the first and second support bearings, the bearing oil grooves are arranged in a ring shape to form an oil cavity, bearing connecting oil holes are further formed on the box, one end of the bearing connecting oil hole is communicated with the oil inlet hole, and the other end of the bearing connecting oil hole is communicated with the bearing oil groove to supply oil to the first and second support bearings.

[0021] By using the above technical solution, the first and second support bearings can be lubricated and cooled.

[0022] Optionally, a third oil amount control plug is arranged at the end of the bearing connecting oil hole away from the oil inlet hole.

[0023] By using the above technical solution, the amount of oil for lubricating the first and second support bearings can be controlled.

[0024] Optionally, the second outer tooth sleeve and the second inner tooth sleeve are connected through connecting bolts.

[0025] Optionally, the inner wall of the oil inlet pipe assembly and the oil inlet hole are threadedly connected.

[0026] Optionally, the first outer tooth sleeve is fixed on the first transmission shaft through a first pressing plate and a first screw, and the second outer tooth sleeve is fixed on the second transmission shaft through a second pressing plate and a second screw.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The present application reasonably utilizes the lubricating system of the gear box, arranges a circle of spray points around the meshing circle of the gear coupling, sprays and lubricates the outside of the meshing gear coupling, and designs spray points at the wheel flanks of the gear coupling to realize the purpose of lubricating and cooling the inside of the drum-type gear, multiple spray points are arranged to achieve the purposes of lubrication and cooling, and the gear coupling can be well lubricated and cooled to improve the wear condition of the gear surface; and the lubricating device has a compact and simple structure, a large space for adjusting the oil injection amount, and can adapt to various working conditions of the gear coupling.

[0029] 2. The gear coupling lubricating device reasonably uses the pressure oil of the gear box lubricating system, divides the lubricating oil into two paths, one path lubricates the bearing, and the other path lubricates the inner and outer tooth sleeves of the gear coupling.

[0030] 3. The lubricating oil path of the lubricating gear coupling inner and outer tooth sleeve is also divided into two paths, one lubricates the outer side of the tooth sleeve, and the other lubricates the inner side of the tooth sleeve, realizing multi-point lubrication;

[0031] 4. The two-way lubricating oil amount of the lubricating gear coupling can be adjusted according to the actual oil amount; at each spray hole, an oil amount control plug is used to control the lubricating oil amount of the bearing and the gear coupling respectively, and the lubricating device can simultaneously ensure the lubrication and heat dissipation of the bearing and the gear coupling tooth sleeve BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a cross-sectional view of the lubricating structure of a gear coupling according to an embodiment of the present application.

[0033] Figure 2 is a detailed view of the lubrication of the gear coupling engagement circle side according to an embodiment of the present application.

[0034] Figure 3 is a detailed view of the support bearing hole according to an embodiment of the present application.

[0035] Figure 4 is a structural schematic view for showing the waist-shaped hole according to an embodiment of the present application.

[0036] Reference signs: 1, first inner tooth sleeve; 2, first oil amount control plug; 3, first oil supply hole; 4, tooth sleeve connecting oil hole; 5, box body; 6, first support bearing; 7, first transmission shaft; 8, first pressing plate; 9, first screw; 10, first outer tooth sleeve; 11, third oil amount control plug; 13, bearing connecting oil hole; 14, oil inlet pipe assembly; 15, oil inlet hole; 16, second outer tooth sleeve; 17, second screw; 18, second pressing plate; 19, second transmission shaft; 20, second support bearing; 21, bearing oil groove; 22, lubricating oil groove; 23, second oil supply hole; 24, wheel web; 25, second inner tooth sleeve; 26, connecting bolt group; 27, second spray point; 28, first spray point; 29, second oil amount control plug; 30, waist-shaped hole. Best mode for carrying out the present application

[0037] The present application will be further described in detail below in conjunction with Figures 1-4.

[0038] The embodiment of the application discloses a lubricating structure of a gear coupling. Referring to FIGS. 1-3, the lubricating structure of the gear coupling comprises a box body 5, a first mechanism, a second mechanism and an oil inlet pipe assembly 14, and the first mechanism and the second mechanism are oppositely arranged. The first mechanism comprises a first inner gear sleeve 1, a first outer gear sleeve 10, a first supporting bearing 6 and a first transmission shaft 7; the first transmission shaft 7 is installed on the box body 5 through the first supporting bearing 6; and the first outer gear sleeve 10 is coaxially arranged on the first transmission shaft 7. The second mechanism comprises a second inner gear sleeve 25, a second outer gear sleeve 16, a second supporting bearing 20 and a second transmission shaft 19; the second transmission shaft 19 is installed on the box body 5 through the second supporting bearing 20, and the second outer gear sleeve 16 is coaxially arranged on the second transmission shaft 19. The first inner gear sleeve 1 and the second inner gear sleeve 25 are connected through connecting bolts 26. The first outer gear sleeve 10 is fixed on the first transmission shaft 7 through a first pressing plate 8 and a first screw 9; and the second outer gear sleeve 16 is fixed on the second transmission shaft 19 through a second pressing plate 18 and a second screw 17.

[0039] The box body 5 is provided with a lubricating oil groove 22, a first oil supply hole 3, a second oil supply hole 23, a gear sleeve connecting oil hole 4 and an oil inlet hole 15; the lubricating oil groove 22 is arranged around the outer rings of the first supporting bearing 6 and the second supporting bearing 20 to form an oil cavity; the gear sleeve connecting oil hole 4 is communicated with the oil inlet hole 15, the first oil supply hole 3 and the second oil supply hole 23 are communicated with the gear sleeve connecting oil hole 4 in parallel, a first spraying point 28 is arranged at one end of the first oil supply hole 3 away from the gear sleeve connecting oil hole 4, a second spraying point 27 is arranged at one end of the second oil supply hole 23 away from the gear sleeve connecting oil hole 4, and the first spraying point 28 and the second spraying point 27 are arranged towards the first inner gear sleeve 1, the first outer gear sleeve 10, the second outer gear sleeve 16 and the second inner gear sleeve 25. The oil inlet pipe assembly 14 is installed on the box body 5, the oil inlet pipe assembly 14 is communicated with the oil inlet hole 15 and is connected with a lubricating pipeline of a gear box. The oil inlet pipe assembly 14 and the inner wall of the oil inlet hole 15 are threadedly connected. The existing oil inlet pipe assembly 14 can be selected and installed according to actual conditions, and details are not described herein.

[0040] The lubricating device of the gear coupling of the application reasonably uses pressure oil of a gear box lubricating system, lubricating oil is introduced into the oil inlet hole 15 through the lubricating pipeline and the oil inlet pipe assembly 14, then the lubricating oil is introduced into the first oil supply hole 3 and the second oil supply hole 23 through the gear sleeve connecting oil hole 4, and the lubricating oil is sprayed towards the first inner gear sleeve 1, the first outer gear sleeve 10, the second outer gear sleeve 16 and the second inner gear sleeve 25 through the first spraying point 28 and the second spraying point 27, so that the gear coupling is lubricated and cooled, and the wear and heating problems between the inner gear and the outer gear are solved.

[0041] Referring to Figures 1-3, the box 5 is also provided with a lubricating oil groove 22, the lubricating oil groove 22 is arranged around the outer ring of the first support bearing 6 and the second support bearing 20 to form an annular oil cavity; the gear sleeve connecting oil hole 4 is arranged along the outer ring of the lubricating oil groove 22, and the end of the gear sleeve connecting oil hole 4 away from the oil inlet hole 15 is in communication with the lubricating oil groove 22. The number of the gear sleeve connecting oil hole 4 can be increased or decreased according to the actual oil requirement, multi-point spraying is realized, and the lubrication and cooling effect is improved. The first oil quantity control plug 2 is arranged at the first spraying point 28, and the second oil quantity control plug 29 is arranged at the second spraying point 27, which is helpful to control the oil quantity at the first spraying point 28 and the second spraying point 27.

[0042] Referring to Figure 1-4, the first spraying point 28 is directed to the meshing circle of the first inner gear sleeve 1 and the first outer gear sleeve 10, and to the meshing circle of the second outer gear sleeve 16 and the second inner gear sleeve 25. The lubricating oil can lubricate and cool the meshing parts of the first inner gear sleeve 1 and the first outer gear sleeve 10, and the meshing parts of the second outer gear sleeve 16 and the second inner gear sleeve 25. A plurality of waist-shaped holes 30 are arranged on the web 24 of the first outer gear sleeve 10 and the second outer gear sleeve 16, and the second spraying point 27 is directed to the position of the waist-shaped hole 30. The lubricating oil can enter the inside of the gear coupling through the waist-shaped hole 30 to lubricate the inside of the gear coupling.

[0043] Referring to Figure 1-3, the first support bearing 6 and the second support bearing 20 are provided with a bearing oil groove 21, and the bearing oil groove 21 is arranged in a ring shape to form an oil cavity; the box 5 is also provided with a bearing connecting oil hole 13, one end of the bearing connecting oil hole 13 is in communication with the oil inlet hole 15, and the other end of the bearing connecting oil hole is in communication with the bearing oil groove 21, which is used to supply oil to the first support bearing 6 and the second support bearing 20, and can lubricate and cool the first support bearing 6 and the second support bearing 20. The end of the bearing connecting oil hole 13 away from the oil inlet hole 15 is provided with a third oil quantity control plug 11. It is helpful to control the oil quantity for lubricating the first support bearing 6 and the second support bearing 20.

[0044] The implementation principle of the lubricating structure of the gear coupling according to the embodiment of the application is as follows: the gear coupling lubricating device of the application reasonably uses the pressure oil of the gear box lubricating system, the lubricating oil is introduced into the oil inlet hole 15 through the lubricating pipeline and the oil inlet pipe assembly 14, then the lubricating oil is introduced into the first oil supply hole 3 and the second oil supply hole 23 through the gear sleeve connecting oil hole 4, and the lubricating oil is sprayed out towards the first inner gear sleeve 1, the first outer gear sleeve 10, the second outer gear sleeve 16 and the second inner gear sleeve 25 through the first spraying point 28 and the second spraying point 27. The oil is supplied into the first support bearing 6 and the second support bearing 20 through the bearing connecting oil hole 13 to lubricate and cool the first support bearing 6 and the second support bearing 20, and multi-point lubrication is realized.

[0045] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A lubrication structure for a gear coupling, characterized in that: It includes a housing (5), a first mechanism, a second mechanism, and an oil inlet pipe assembly (14), wherein the first mechanism and the second mechanism are arranged opposite to each other; The first mechanism includes a first inner gear sleeve (1), a first outer gear sleeve (10), a first support bearing (6), and a first drive shaft (7); the first drive shaft (7) is mounted on the housing (5) via the first support bearing (6); the first outer gear sleeve (10) is coaxially disposed on the first drive shaft (7); The second mechanism includes a second inner gear sleeve (25), a second outer gear sleeve (16), a second support bearing (20), and a second drive shaft (19). The second drive shaft (19) is mounted on the housing (5) via the second support bearing (20), and the second outer gear sleeve (16) is coaxially mounted on the second drive shaft (19). The first inner toothed sleeve (1) and the second inner toothed sleeve (25) are connected to each other; The housing (5) is provided with a lubricating oil groove (22), a first oil supply hole (3), a second oil supply hole (23), a gear sleeve connecting oil hole (4), and an oil inlet hole (15); the lubricating oil groove (22) is arranged around the outer ring of the first support bearing (6) and the second support bearing (20) to form an oil cavity; the gear sleeve connecting oil hole (4) is connected to the oil inlet hole (15), the first oil supply hole (3) and the second oil supply hole (23) are connected side by side on the gear sleeve connecting oil hole (4), the first oil supply hole (3) is provided with a first spray point (28) at the end away from the gear sleeve connecting oil hole (4), the second oil supply hole (23) is provided with a second spray point (27) at the end away from the gear sleeve connecting oil hole (4), and the first spray point (28) and the second spray point (27) are arranged towards the first inner gear sleeve (1), the first outer gear sleeve (10), the second outer gear sleeve (16), and the second inner gear sleeve (25); The oil inlet pipe assembly (14) is installed on the housing (5), and the oil inlet pipe assembly (14) is connected to the oil inlet hole (15) and externally connected to the lubrication pipeline of the gearbox.

2. The lubrication structure of a gear coupling according to claim 1, characterized in that: The housing (5) is also provided with a lubricating oil groove (22), which surrounds the outer ring of the first support bearing (6) and the second support bearing (20) to form an annular oil cavity; the gear sleeve connecting oil hole (4) is arranged along the outer ring of the lubricating oil groove (22), and the end of the gear sleeve connecting oil hole (4) away from the oil inlet hole (15) is connected to the lubricating oil groove (22).

3. The lubrication structure of a gear coupling according to claim 1, characterized in that: A first oil quantity control plug (2) is provided at the first spray point (28), and a second oil quantity control plug (29) is provided at the second spray point (27).

4. The lubrication structure of a gear coupling according to claim 1, characterized in that: The first spray point (28) is directed toward the meshing circle of the first inner toothed sleeve (1) and the first outer toothed sleeve (10), and toward the meshing circle of the second outer toothed sleeve (16) and the second inner toothed sleeve (25).

5. The lubrication structure of a gear coupling according to claim 1, characterized in that: Multiple waist-shaped holes (30) are provided on the wheel rim (24) of the first outer toothed sleeve (10) and the second outer toothed sleeve (16), and the second spray point (27) sprays towards the waist-shaped holes (30).

6. The lubrication structure of a gear coupling according to claim 1, characterized in that: The first support bearing (6) and the second support bearing (20) are provided with bearing oil grooves (21), which are arranged in annular shape to form an oil cavity; the housing (5) is also provided with bearing connecting oil holes (13), one end of which is connected to the oil inlet hole (15) and the other end of which is connected to the bearing oil groove (21), for supplying oil to the first support bearing (6) and the second support bearing (20).

7. The lubrication structure of a gear coupling according to claim 6, characterized in that: A third oil quantity control plug (11) is provided at the end of the bearing connecting oil hole (13) away from the oil inlet hole (15).

8. The lubrication structure of a gear coupling according to claim 1, characterized in that: The second outer toothed sleeve (16) and the second inner toothed sleeve (25) are connected by a set of connecting bolts (26).

9. The lubrication structure of a gear coupling according to claim 1, characterized in that: The inner walls of the oil inlet pipe assembly (14) and the oil inlet hole (15) are threaded together.

10. The lubrication structure of a gear coupling according to claim 1, characterized in that: The first outer gear sleeve (10) is fixed to the first drive shaft (7) by the first pressure plate (8) and the first screw (9); the second outer gear sleeve (16) is fixed to the second drive shaft (19) by the second pressure plate (18) and the second screw (17).

Images