A windshield structure for a speed reducer

Abstract

The present invention relates to the technical field of speed reducers, and particularly relates to a windshield structure of a speed reducer. The windshields structure of the speed reducer provided by the present invention comprises a casing, on one side of which a transmission gear is provided; an oil extraction port, arranged at the bottom of the casing and adapted to be connected to an oil extraction pump; a windshield assembly, arranged on the side wall of the casing and located between the oil extraction port and the transmission gear, the windshield assembly being integrally formed with the casing; a first oil inlet, arranged on the windshield assembly, the first oil inlet being communicated with the oil extraction port and arranged in a staggered manner. The windshield assembly provided by the present invention is integrally formed with the casing, avoiding the defect of weld cracking caused by fixing the windshield assembly by welding. At the same time, the windshield assembly also has the function of recycling lubricating oil.

Description

Technical Field

[0001] The present invention relates to the technical field of speed reducers, and particularly relates to a wind shielding structure for a speed reducer. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. In a speed reducer, to prevent the lubricating oil temperature from being too high during long working hours, a lubricating oil recovery structure is usually provided, and the lubricating oil is pumped back by a lubricating oil pump.

[0003] Currently, the transmission gears of aviation speed reducers have the characteristics of large load and high linear speed. The wind resistance generated when the transmission gears rotate will reduce the efficiency of lubricating oil recovery. Therefore, generally, a wind shielding structure is designed at the lubricating oil recovery structure to reduce the influence of the wind resistance brought by the transmission gears.

[0004] The existing wind shielding structure is welded by multiple wind shielding plates and is installed on the casing by screws. Therefore, the existing wind shielding structure has certain requirements for the installation space and is prone to problems such as weld cracking. Summary of the Invention

[0005] Therefore, the present invention aims to overcome the defect that the wind shielding structure of the speed reducer in the prior art is welded by multiple wind shielding plates and is prone to weld cracking.

[0006] To solve the above problems, the present invention provides a wind shielding structure for a speed reducer, including:

[0007] A casing, on one side wall of which there is a transmission gear;

[0008] An oil pumping port, arranged at the bottom of the casing and adapted to be connected to an oil pump;

[0009] A wind shielding assembly, arranged on the side wall of the casing and located between the oil pumping port and the transmission gear, and the wind shielding assembly is integrally formed with the casing;

[0010] A first oil inlet, arranged on the wind shielding assembly, and the first oil inlet is communicated with the oil pumping port and is arranged in a staggered manner.

[0011] Optionally, the wind shielding assembly includes:

[0012] A first wind shielding plate, arranged between the oil pumping port and the transmission gear, and the projection of the first wind shielding plate on the side wall provided with the oil pumping port covers the oil pumping port; the first oil inlet is arranged on the first wind shielding plate.

[0013] Optionally, the wind shielding assembly further includes:

[0014] The second wind deflector is arranged between the first wind deflector and the oil pumping port; one end of the second wind deflector is connected to the side wall of the casing, and a second oil inlet is formed between the other end and the first wind deflector. The second oil inlet is located between the two ends of the first wind deflector and is respectively communicated with the first oil inlet and the oil pumping port.

[0015] Optionally, the projection of the second wind deflector on the side wall provided with the oil pumping port covers the oil pumping port.

[0016] Optionally, the first wind deflector further includes:

[0017] An extension plate is arranged at an angle with the first wind deflector; one end of the extension plate is connected to the first wind deflector, and the second oil inlet is formed between the other end and the end of the second wind deflector far from the side wall of the casing.

[0018] Optionally, the oil inlet direction of the second oil inlet has an angle with the oil pumping direction of the oil pumping port.

[0019] Optionally, the first wind deflector includes a first plate body and a second plate body arranged at intervals. One end of the first plate body and the second plate body form the first oil inlet, and the other end and the casing form a third oil inlet. Among them, the third oil inlet is communicated with the second oil inlet;

[0020] The extension plate is connected to the second plate body.

[0021] Optionally, the end of the extension plate close to the casing and the end of the second wind deflector close to the casing are respectively arranged on both sides of the oil pumping port;

[0022] A fourth oil inlet is formed by clamping between the end of the extension plate far from the first wind deflector and the side wall of the casing. A fifth oil inlet is formed between the end of the second plate body far from the first plate body and the casing. The fifth oil inlet is sequentially communicated with the fourth oil inlet and the oil pumping port.

[0023] Optionally, the flow-through area at the first oil inlet is larger than the flow-through area at the second oil inlet;

[0024] And / or, the flow-through area at the third oil inlet is larger than the flow-through area at the second oil inlet.

[0025] Optionally, the flow-through area at the fifth oil inlet is larger than the flow-through area at the fourth oil inlet.

[0026] The present invention has the following advantages:

[0027] 1. The windshield structure of the speed reducer provided by the present invention includes a housing, with a transmission gear provided on the side wall of one side; an oil pumping port, provided at the bottom of the housing and adapted to be connected to an oil pump; a windshield assembly, provided on the side wall of the housing and located between the oil pumping port and the transmission gear, and the windshield assembly is integrally formed with the housing; a first oil inlet, provided on the windshield assembly, and the first oil inlet is communicated with the oil pumping port and is arranged in a staggered manner.

[0028] The windshield assembly in this device is integrally formed with the housing, avoiding the defect of weld cracking caused by fixing the windshield assembly by welding. At the same time, the integrally formed structure reduces the overall space of the windshield assembly, has no installation space requirements, and the windshield assembly also improves the stiffness of the housing. Secondly, in this device, the oil return device is integrated with the windshield assembly, that is, the windshield assembly also has the function of recovering lubricating oil. The lubricating oil flows to the bottom of the housing by its own weight and is pumped back by the oil pump through the oil pumping port. Since the windshield assembly is arranged between the oil pumping port and the transmission gear, on the way of recovering the lubricating oil, the windshield assembly reduces the influence of the wind resistance brought by the rotation of the transmission gear on the lubricating oil, avoiding the gear churning oil caused by poor oil return and then leading to the rise of the lubricating oil temperature, and at the same time improving the recovery efficiency of the lubricating oil. And by arranging the first oil inlet and the oil pumping port in a staggered manner, splashing of the lubricating oil when entering the oil pumping port is avoided, further improving the oil return efficiency. Finally, the windshield assembly in this device is not affected by the rotation direction of the transmission gear, that is, no matter in which rotation direction the transmission gear meshes, the windshield assembly can achieve the windshield effect and ensure the oil return efficiency of the lubricating oil.

[0029] 2. The windshield structure of the speed reducer provided by the present invention, the windshield assembly further includes a second windshield plate, arranged between the first windshield plate and the oil pumping port; one end of the second windshield plate is connected to the side wall of the housing, and a second oil inlet is formed between the other end and the first windshield plate, the second oil inlet is located between the two ends of the first windshield plate and is communicated with the first oil inlet and the oil pumping port respectively.

[0030] By arranging the second windshield plate, the first oil inlet, the second oil inlet and the oil pumping port are connected in sequence to form a serpentine flow channel, minimizing the amount of oil and gas entering the flow channel as much as possible and preventing excessive oil and gas from affecting the oil return stability at the oil pumping port.

[0031] 3. The windshield structure of the speed reducer provided by the present invention, the projection of the second windshield on the side wall provided with the oil extraction port covers the oil extraction port. Thereby reducing the flow rate of the lubricating oil between the second oil inlet and the oil extraction port, and further reducing the sputtering probability at the oil extraction port. At the same time, it also reduces the flow area of the flow passage between the second windshield and the casing, avoiding excessive oil volume at the oil extraction port and causing accumulation.

[0032] 4. The windshields structure of the speed reducer provided by the present invention, one end of the extension plate close to the casing and one end of the second windshield close to the casing are respectively arranged on both sides of the oil extraction port; one end of the extension plate far from the first windshield and the side wall of the casing are clamped to form a fourth oil inlet, a fifth oil inlet is formed between the second plate body and the casing, and the fourth oil inlet is respectively communicated with the fifth oil inlet and the oil extraction port.

[0033] By setting the fifth oil inlet, the fourth oil inlet, and the oil extraction port that are sequentially communicated, a recovery channel is added for the return oil of the lubricating oil, further improving the recovery efficiency of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 FIG. shows a partial schematic view of the windshields structure of the speed reducer provided by the present invention.

[0036] Figure 2 FIG. shows a schematic view of the windshields structure of the speed reducer provided by the present invention.

[0037] DESCRIPTION OF THE REFERENCE NUMERALS:

[0038] 1. Casing; 2. Oil extraction port; 3. Windshield assembly; 31. First windshield; 311. Extension plate; 312. First plate body; 313. Second plate body; 32. Second windshield; 4. First oil inlet; 5. Second oil inlet; 6. Third oil inlet; 7. Fourth oil inlet; 8. Fifth oil inlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] This embodiment provides a windshield structure for a speed reducer, as Figures 1 to 2 shown, including a housing 1, an oil extraction port 2, a windshield assembly 3, and a first oil inlet 4. A transmission gear is provided on the side wall of one side of the housing 1. As a specific implementation manner, the transmission gear meshes in the A direction in Figure 1 . As an alternative implementation manner, the transmission gear meshes in a direction opposite to the A direction in Figure 1 . The oil extraction port 2 is arranged at the bottom of the housing 1 and is adapted to be connected to an oil pump, and no further limitation is imposed on the oil pump here; the windshield assembly 3 is arranged on the side wall of the housing 1 and is located between the oil extraction port 2 and the transmission gear, and the windshield assembly 3 is integrally formed with the housing 1; the first oil inlet 4 is arranged on the windshield assembly 3, and the first oil inlet 4 is communicated with the oil extraction port 2 and is arranged in a staggered manner.

[0044] The windshield assembly 3 in the present device is integrally formed with the casing 1, avoiding the defect of weld cracking caused by fixing the windshield assembly 3 by welding. At the same time, the integrally formed structure reduces the overall space of the windshield assembly 3, without the requirement for installation space. Moreover, the windshield assembly 3 also improves the stiffness of the casing 1. Secondly, in the present device, the oil return device is integrated with the windshield assembly 3, that is, the windshield assembly 3 also has the function of recovering lubricating oil. The lubricating oil flows to the bottom of the casing 1 by its own weight and is pumped back by the oil pump through the oil pumping port 2. Since the windshield assembly 3 is arranged between the oil pumping port 2 and the transmission gear, on the way of recovering the lubricating oil, the windshield assembly 3 reduces the influence of the wind resistance brought by the rotation of the transmission gear on the lubricating oil, avoiding the gear churning oil caused by poor oil return and then leading to the rise of lubricating oil temperature, and at the same time improving the recovery efficiency of the lubricating oil. And by arranging the first oil inlet 4 and the oil pumping port 2 in a staggered manner, the splashing of the lubricating oil when entering the oil pumping port 2 is avoided, further improving the oil return efficiency. Finally, the windshield assembly 3 in the present device is not affected by the rotation direction of the transmission gear, that is, no matter in which rotation direction the transmission gear meshes, the windshield assembly 3 can achieve the windshield effect, ensuring the oil return efficiency of the lubricating oil.

[0045] Optionally, the windshield assembly 3 includes a first windshield plate 31, which is arranged between the oil pumping port 2 and the transmission gear. The projection of the first windshield plate 31 on the side wall provided with the oil pumping port 2 covers the oil pumping port 2; the first oil inlet 4 is provided on the first windshield plate 31. No further limitation is made on the length of the first windshield plate 31 here.

[0046] Optionally, the windshield assembly 3 further includes a second windshield plate 32, which is arranged between the first windshield plate 31 and the oil pumping port 2; one end of the second windshield plate 32 is connected to the side wall of the casing 1, and the other end forms a second oil inlet 5 with the first windshield plate 31. The second oil inlet 5 is located between the two ends of the first windshield plate 31 and is respectively communicated with the first oil inlet 4 and the oil pumping port 2.

[0047] By arranging the second windshield plate 32, the first oil inlet 4, the second oil inlet 5, and the oil pumping port 2 are sequentially connected to form a serpentine flow channel, reducing the amount of oil and gas entering the flow channel and preventing too much oil and gas from affecting the oil return stability at the oil pumping port 2.

[0048] Optionally, the projection of the second wind deflector 32 on the side wall provided with the oil pumping port 2 covers the oil pumping port 2. Thereby, the flow rate of the lubricating oil from the second oil inlet 5 to the oil pumping port 2 is reduced, and the sputtering probability at the oil pumping port 2 is further reduced. At the same time, the flow area of the flow passage between the second wind deflector 32 and the casing 1 is also reduced, avoiding excessive oil accumulation at the oil pumping port 2.

[0049] Optionally, the first wind deflector 31 further includes an extension plate 311, which is arranged at an angle with the first wind deflector 31; one end of the extension plate 311 is connected to the first wind deflector 31, and the other end forms the second oil inlet 5 with the end of the second wind deflector 32 far from the side wall of the casing 1. Through the arrangement of the extension plate 311, the flow area of the second oil inlet 5 can be reduced, and the oil inlet direction at the second oil inlet 5 can be guided and changed.

[0050] Optionally, the oil inlet direction of the second oil inlet 5 and the oil pumping direction of the oil pumping port 2 form an angle. This prevents the flow rate of the lubricating oil at the oil pumping port 2 from being too fast.

[0051] Optionally, the first wind deflector 31 includes a first plate body 312 and a second plate body 313 arranged at intervals. The first oil inlet 4 is formed between one end of the first plate body 312 and the second plate body 313, and the third oil inlet 6 is formed between the other end and the casing 1. Among them, the third oil inlet 6 is communicated with the second oil inlet 5; the extension plate 311 is connected to the second plate body 313. Further, there may be multiple first plate bodies 312, and the multiple first plate bodies 312 are arranged at intervals. A corresponding oil inlet is formed between every two adjacent first plate bodies 312, thereby increasing the oil inlet efficiency of the lubricating oil.

[0052] Optionally, one end of the extension plate 311 close to the casing 1 and one end of the second wind deflector 32 close to the casing 1 are respectively arranged on both sides of the oil pumping port 2; a fourth oil inlet 7 is formed by clamping between the end of the extension plate 311 far from the first wind deflector 31 and the side wall of the casing 1, and a fifth oil inlet 8 is formed between the end of the second plate body 313 far from the first plate body 312 and the casing 1. The fifth oil inlet 8 is communicated with the fourth oil inlet 7 and the oil pumping port 2 in sequence.

[0053] By providing the fifth oil inlet 8, the fourth oil inlet 7, and the oil pumping port 2 that are connected in sequence, a recovery channel is added for the return oil of the lubricating oil, further improving the recovery efficiency of the lubricating oil. Moreover, the flow direction of the flow channel formed by the fifth oil inlet 8, the fourth oil inlet 7, and the oil pumping port 2 is different from that of the flow channel formed by the first oil inlet 4, the second oil inlet 5, and the oil pumping port 2, enabling the collection of lubricating oil with different flow directions and increasing the return oil efficiency.

[0054] Optionally, the flow area at the first oil inlet 4 is larger than the flow area at the second oil inlet 5; and / or, the flow area at the third oil inlet 6 is larger than the flow area at the second oil inlet 5. Specifically, the second wind deflector 32 includes a third plate body and a fourth plate body, which are connected by a bending portion, and the distance between the third plate body and the casing is smaller than the distance between the fourth plate body and the casing. As a specific implementation manner, the flow area at the first oil inlet 4 is larger than the flow area at the second oil inlet 5; as another specific implementation manner, the flow area at the third oil inlet 6 is larger than the flow area at the second oil inlet 5; as another specific implementation manner, both the flow area at the first oil inlet 4 and the flow area at the third oil inlet 6 are larger than the flow area at the second oil inlet 5. By changing the flow area, the amount of oil and gas in the wind deflector assembly 3 is reduced, improving the stability of the return oil.

[0055] Optionally, the flow area at the fifth oil inlet 8 is larger than the flow area at the fourth oil inlet 7. Thereby reducing the amount of oil and gas in the wind deflector assembly 3 and improving the stability of the return oil.

[0056] Optionally, an air vent plug mounting seat is provided between the second wind deflector 32 and the casing 1.

[0057] Optionally, a magnetic plug mounting seat is provided between the second wind deflector 32 and the casing 1, and the magnetic plug mounting seat and the air vent plug mounting seat are arranged at intervals.

[0058] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A wind shield structure for a speed reducer, characterized in that, it includes: a housing (1) with a transmission gear provided on a side wall thereof; an oil pumping port (2) provided at the bottom of the housing (1) and adapted to be connected to an oil pump; a wind shield assembly (3) provided on the side wall of the housing (1) and located between the oil pumping port (2) and the transmission gear, and the wind shield assembly (3) is integrally formed with the housing (1); a first oil inlet (4) provided on the wind shield assembly (3), and the first oil inlet (4) is communicated with and misaligned with the oil pumping port (2); the wind shield assembly (3) includes a first wind shield plate (31) and a second wind shield plate (32), the first wind shield plate (31) is arranged between the oil pumping port (2) and the transmission gear, and the projection of the first wind shield plate (31) on the side wall where the oil pumping port (2) is provided covers the oil pumping port (2); the first oil inlet (4) is provided on the first wind shield plate (31); the second wind shield plate (32) is arranged between the first wind shield plate (31) and the oil pumping port (2); one end of the second wind shield plate (32) is connected to the side wall of the housing (1), and a second oil inlet (5) is formed between the other end and the first wind shield plate (31), the second oil inlet (5) is located between the two ends of the first wind shield plate and is communicated with the first oil inlet (4) and the oil pumping port (2) respectively; the projection of the second wind shield plate (32) on the side wall where the oil pumping port (2) is provided covers the oil pumping port (2).

2. The wind shield structure for a speed reducer according to claim 1, characterized in that, the first wind shield plate (31) further includes: an extension plate (311) arranged at an angle with the first wind shield plate (31); one end of the extension plate (311) is connected to the first wind shield plate (31), and the second oil inlet (5) is formed between the other end and the end of the second wind shield plate (32) far from the side wall of the housing (1).

3. The wind shield structure for a speed reducer according to claim 2, characterized in that, the oil inlet direction of the second oil inlet (5) has an angle with the oil pumping direction of the oil pumping port (2).

4. The wind shield structure for a speed reducer according to claim 2, characterized in that, the first wind shield plate (31) includes a first plate body (312) and a second plate body (313) arranged at intervals, one end of the first plate body (312) forms the first oil inlet (4) with the second plate body (313), and a third oil inlet (6) is formed between the other end and the housing (1), wherein the third oil inlet (6) is communicated with the second oil inlet (5); the extension plate (311) is connected to the second plate body (313).

5. The wind shield structure for a speed reducer according to claim 4, characterized in that, one end of the extension plate (311) close to the housing (1) and one end of the second wind shield plate (32) close to the housing (1) are respectively arranged on both sides of the oil pumping port (2); One end of the extension plate (311) away from the first wind deflector (31) and the side wall of the casing (1) are clamped to form a fourth oil inlet (7). A fifth oil inlet (8) is formed between one end of the second plate body (313) away from the first plate body (312) and the casing (1). The fifth oil inlet (8) is communicated with the fourth oil inlet (7) and the oil pumping port (2) in sequence.

6. The wind deflector structure of the speed reducer according to claim 4 or 5, characterized in that the flow-through area at the first oil inlet (4) is larger than the flow-through area at the second oil inlet (5); and / or, the flow-through area at the third oil inlet (6) is larger than the flow-through area at the second oil inlet (5).

7. The wind deflector structure of the speed reducer according to claim 5, characterized in that the flow-through area at the fifth oil inlet (8) is larger than the flow-through area at the fourth oil inlet (7).

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