Gear lubrication structure, gear and gearbox

Abstract

The present invention relates to the technical field of gearboxes, and in particular to a gear lubrication structure, a gear and a gearbox. The gear lubrication structure comprises: an oil inlet hole, which is opened on the same side of the gear shaft hole, and the hole wall is set to be a streamlined shape composed of a circular arc segment and a straight line segment; an oil inlet oil circuit, which is connected to the circular arc segment; an oil outlet oil circuit, one end of which is connected to the oil inlet oil circuit, and the other end of which is connected to the gear tooth end; as shown in Figure 1, due to the large size of the oil inlet hole, the oil output on the gear is increased without changing the amount of lubricating oil in the gear box, and when the gear rotates counterclockwise, the lubricating oil will enter the oil inlet oil circuit after being accelerated by the straight line segment and the circular arc segment in sequence under the action of centrifugal force. The above design can increase the oil inlet speed and then increase the oil outlet speed, thereby accelerating the flow speed of the lubricating oil, improving the heat dissipation effect on the gear, ensuring stable meshing between the gears, and extending the service life of the gears.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to a gear lubrication structure, a gear and a gearbox. Background Art

[0002] The transmission of gears mainly relies on the relevant engagement of the gear tooth surfaces to move and transmit, so the gears will produce some friction and wear during the movement. If you want to ensure its normal movement, you need to add lubricating oil to the tooth surface for lubrication.

[0003] However, the existing lubrication method has a limited oil output, resulting in poor lubrication effect, and the slow flow rate of the lubricating oil leads to poor heat dissipation effect of the gear, which directly shortens the service life of the gear. Summary of the invention

[0004] The purpose of the present application is to provide a gear lubrication structure, a gear and a gearbox to solve the problem of poor gear lubrication and heat dissipation in the prior art.

[0005] (I) Technical solution

[0006] To achieve the above object, the present invention provides a gear lubrication structure in a first aspect, comprising:

[0007] The oil inlet hole is opened on the same side of the gear shaft hole, and the hole wall is configured to be a streamlined shape composed of arc segments and straight line segments;

[0008] An oil inlet passage, connected to the circular arc section;

[0009] The oil outlet oil circuit has one end connected to the oil inlet oil circuit and the other end connected to the gear tooth end.

[0010] Optionally, the number of the circular arc segments is two, the two circular arc segments have different sizes, and the oil inlet passage is connected to the circular arc segment with a smaller size.

[0011] Optionally, the arc segment is further provided with an auxiliary oil inlet, and the auxiliary oil inlet is connected to the oil inlet circuit.

[0012] Optionally, an oil outlet is provided at the gear tooth root of the gear tooth end, and the oil outlet is connected to the oil outlet oil circuit.

[0013] Optionally, the oil outlet passage is arranged at an angle.

[0014] Optionally, the gear lubrication structure further includes: a filtering structure arranged outside the oil inlet hole.

[0015] Optionally, a filtering structure is also provided on the outer side of the oil outlet.

[0016] Optionally, one end of the oil outlet circuit is connected to the center position of the oil inlet circuit.

[0017] To achieve the above object, the second aspect of the present invention provides a gear, comprising: a plurality of gear lubrication structures as described in any one of the above items.

[0018] To achieve the above object, the third aspect of the present invention provides a gearbox, comprising: the gear as described above.

[0019] (II) Beneficial effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a gear lubrication structure, a gear and a gearbox, comprising: an oil inlet hole, which is opened on the same side of the gear shaft hole, and the hole wall is arranged to be a streamlined shape composed of arc segments and straight segments; an oil inlet oil passage, which is connected to the arc segment; an oil outlet oil passage, one end of which is connected to the oil inlet oil passage, and the other end of which is connected to the gear tooth end; Figure 1 As shown, due to the large size of the oil inlet hole, the oil output on the gear is increased without changing the amount of lubricating oil in the gear box. Moreover, when the gear rotates counterclockwise, the lubricating oil will enter the oil inlet path after being accelerated through the straight segment and the circular arc segment in sequence under the action of centrifugal force. The above design can increase the oil inlet speed and then increase the oil output speed, thereby accelerating the flow speed of the lubricating oil, improving the heat dissipation effect on the gear, ensuring stable meshing between the gears, and extending the service life of the gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0024] Figure 1 is a three-dimensional diagram of the gear in the present invention;

[0025] Figure 2 is a front view of the gear in the present invention;

[0026] Figure 3 It is a structural schematic diagram of the oil inlet hole in the present invention;

[0027] Figure 4 yes Figure 1A partial enlarged view of position A in the middle;

[0028] Figure 5 yes Figure 1 A partial enlarged view of position B in the middle;

[0029] Figure 6 It is a structural schematic diagram of the oil outlet circuit in the present invention;

[0030] Figure 7 It is a structural schematic diagram of the coordination between the oil inlet circuit and the oil outlet circuit in the present invention.

[0031] In the figure: 1. Oil inlet hole; 2. Gear shaft hole; 3. Arc segment; 4. Straight line segment; 5. Oil inlet passage; 6. Oil outlet passage; 7. Gear tooth end; 8. Auxiliary oil inlet port; 9. Oil outlet port; 10. Filter structure; 11. Gear tooth root. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0034] like Figure 1-Figure 7 As shown, the first aspect of the present application discloses a gear lubrication structure, comprising:

[0035] The oil inlet hole 1 is opened on the same side of the gear shaft hole 2, and the hole wall is set to be a streamlined shape composed of a circular arc segment 3 and a straight line segment 4;

[0036] The oil inlet passage 5 is connected with the arc section 3;

[0037] The oil outlet passage 6 is connected to the oil inlet passage 5 at one end and connected to the gear tooth end 7 at the other end; preferably, one end of the oil outlet passage 6 is connected to the center position of the oil inlet passage 5.

[0038] Specifically, the gear tooth root 11 of the gear tooth end 7 is provided with an oil outlet 9, and the oil outlet 9 is connected to the oil outlet oil path 6; when in use, the lubricating oil enters the oil inlet oil path 5 through the oil inlet hole 1, and then is transported to the oil outlet oil path 6, and finally flows out through the oil outlet 9, thereby providing sufficient lubricating oil for the transmission gear. Figure 1As shown, in order to ensure the lubrication effect, a gear is provided with a plurality of gear lubrication structures, and the plurality of gear lubrication structures are evenly installed on the gear with the gear shaft hole 2 as the center. By way of example, in this embodiment, three gear lubrication structures are provided, and the specific number is not specifically limited in this embodiment, and all belong to the protection scope of this scheme.

[0039] like Figure 1 As shown, due to the large size of the oil inlet hole, the oil output on the gear can be increased without changing the amount of lubricating oil in the gear box, which can effectively reduce the vibration and noise of the gear transmission system; and when the gear rotates counterclockwise, the lubricating oil will enter the oil inlet path after being accelerated through the straight line segment and the arc segment in sequence under the action of centrifugal force. The above design can increase the oil inlet speed and then increase the oil output speed, thereby accelerating the flow speed of the lubricating oil, improving the heat dissipation effect on the gear, ensuring stable meshing between the gears, and extending the service life of the gears.

[0040] Of course, in order to further increase the oil discharge speed and the oil discharge speed, the length of the straight segment 4 and the arc segment 3 can be extended. Theoretically, the longer the trajectory of the lubricating oil movement, the faster it enters the oil inlet circuit 5, and the greater the speed of being sprayed out through the oil outlet 9.

[0041] The gear lubrication structure in this embodiment has a simple structure and can be directly processed on the gear surface without the need for other auxiliary structures, which is convenient for processing and saves costs.

[0042] According to one embodiment of the present invention, in order to further increase the oil discharge speed, as Figure 3 As shown, the hole wall of the oil inlet hole 1 is composed of two arc segments 3 and two straight segments 4; the two arc segments 3 have different sizes, and the oil inlet passage 5 is connected to the arc segment 3 with a smaller size; preferably, the structural setting of the oil inlet hole 1 is related to the rotation direction of the gear, specifically, as Figure 1 As shown, the gear rotates in a counterclockwise direction. In order to increase the speed at which the lubricating oil enters the oil inlet circuit 5, the large-sized arc segments 3 of the three oil inlet holes 1 are arranged along the gear rotation direction. This design can achieve that when the gear rotates counterclockwise at high speed, under the action of centrifugal force, the lubricating oil will move along the straight segment 4 and the large-sized arc segment 3 and then enter the oil inlet circuit 5, thereby effectively increasing the speed at which the lubricating oil enters the oil inlet circuit 5.

[0043] According to one embodiment of the present invention, Figure 4 As shown, the arc segment 3 is also provided with an auxiliary oil inlet 8, which is connected to the oil inlet circuit 5. This design can ensure that all the lubricating oil passing through the oil inlet hole 1 enters the oil inlet circuit 5, thereby avoiding the situation where some lubricating oil remains in the arc segment 3.

[0044] According to one embodiment of the present invention, in order to further increase the oil outlet speed, the oil outlet passage 6 is arranged to be inclined.

[0045] According to one embodiment of the present invention, in order to prevent the iron chips mixed in the lubricating oil from blocking the relatively fine oil inlet oil passage 5 and the oil outlet oil passage 6, causing the oil passage to be blocked, as shown in FIG. Figure 1 , Figure 2 and Figure 3 As shown, the gear lubrication structure further includes: a filter structure 10 arranged outside the oil inlet hole 1. Preferably, the filter structure 10 is arranged as a filter net.

[0046] In order to further improve the filtering effect, the filtering structure 10 can be composed of a plurality of filter screens with different filter hole sizes stacked together. In order to facilitate the disassembly and maintenance of the filter screens, each filter screen is connected to the wall of the oil outlet hole with a detachable structure. Preferably, the detachable structure can adopt buckles and protrusions, as well as other detachable structures, which all fall within the protection scope of this scheme.

[0047] According to an embodiment of the present invention, in order to prevent iron chips generated during the meshing process of the gears from clogging the oil outlet 9, a filtering structure 10 is also provided on the outer side of the oil outlet 9, preferably a filter net.

[0048] like Figure 1-Figure 7 As shown, the second aspect of the present application discloses a gear, comprising: a plurality of gear lubrication structures as described in any one of the above items.

[0049] The third aspect of the present application discloses a gearbox, comprising: the gear as described above.

[0050] Each embodiment in this specification is described in a progressive manner, and some embodiments focus on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and 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 therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying importance; the words "bottom surface" and "top surface", "inside" and "outside" refer to the geometric direction toward or away from a specific component, respectively.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the inside of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gear lubrication structure, It is characterized in that include: The oil inlet hole (1) is opened on the same side as the gear shaft hole (2), and the hole wall is arranged to be a streamlined shape composed of a circular arc segment (3) and a straight line segment (4); An oil inlet passage (5) is connected to the circular arc section (3); An oil outlet passage (6), one end of which is connected to the oil inlet passage (5), and the other end of which is connected to the gear tooth end (7); The number of the circular arc segments (3) is two, the two circular arc segments (3) are of different sizes, and the oil inlet passage (5) is connected to the circular arc segment (3) with a smaller size; The arc segment (3) is provided with an auxiliary oil inlet (8), and the auxiliary oil inlet (8) is connected to the oil inlet passage (5); When the gear rotates counterclockwise, the lubricating oil will enter the oil inlet passage (5) after being accelerated by the straight section (4) and the arc section (3) in sequence under the action of centrifugal force, and then be transported to the oil outlet passage (6) to provide lubricating oil to the gear.

2. The gear lubrication structure according to claim 1, It is characterized in that An oil outlet (9) is provided at the gear tooth root (11) of the gear tooth end (7), and the oil outlet (9) is connected to the oil outlet passage (6).

3. The gear lubrication structure according to claim 1, It is characterized in that The oil outlet passage (6) is arranged inclined.

4. The gear lubrication structure according to claim 1, It is characterized in that The gear lubrication structure further comprises: a filtering structure (10) arranged outside the oil inlet hole (1).

5. The gear lubrication structure according to claim 2, It is characterized in that A filtering structure is also provided on the outer side of the oil outlet (9).

6. The gear lubrication structure according to claim 1, It is characterized in that One end of the oil outlet passage (6) is connected to the center position of the oil inlet passage (5).

7. A gear, It is characterized in that include: A plurality of gear lubrication structures according to any one of claims 1 to 6.

8. A gearbox, It is characterized in that include: The gear as claimed in claim 7.

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