Spline shaft convenient to lubricate

Abstract

The utility model relates to the technical field of spline shafts and discloses a spline shaft convenient to lubricate, which comprises a shaft body, a spline is arranged on the periphery of the shaft body, an oil retainer is arranged on the periphery of the shaft body at one end of the spline, and a first shaft end is arranged in the middle of one end of the shaft body. A connector is arranged in the middle of the end, away from the shaft body, of the first shaft end, an oil injection hole is formed in the middle of the end, away from the first shaft end, of the connector, and an oil inlet channel communicated with the oil injection hole is formed in the shaft body. By arranging the oil injection hole, the oil inlet channel, the oil seepage channel and the oil seepage hole, when the spline needs to be lubricated, parts on the periphery of the spline do not need to be detached, lubricating oil can be injected into the spline shaft through the oil injection hole by using an injector, and the lubricating oil seeps to the space between the spline through the oil seepage hole to be lubricated very conveniently; the oil retainer can block lubricating oil between the splines, so that the lubricating oil between the splines is prevented from flowing out, and the loss of the lubricating oil is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of spline shafts, in particular to a spline shaft which is easy to lubricate. Background Art

[0002] Spline shaft is a kind of mechanical transmission. It has the same function as flat key, semicircular key and wedge key, which are used to transmit mechanical torque. There are longitudinal keyways on the surface of the shaft, and the rotating parts on the shaft also have corresponding keyways, which can keep rotating synchronously with the shaft. While rotating, some can also slide longitudinally on the shaft, such as the gear shift gear of the gearbox.

[0003] Some existing spline shafts need to remove the rotating parts on the spline shafts that are sleeved on the outer periphery of the spline when lubricating the spline shafts, so as to lubricate the spline shafts. The lubrication operation is inconvenient. Therefore, a spline shaft that is easy to lubricate is proposed herein. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a spline shaft that is easy to lubricate, which effectively solves the problems existing in the existing spline shaft.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spline shaft that is easy to lubricate, comprising a shaft body, a spline is arranged on the periphery of the shaft body, an oil retaining ring is arranged on the periphery of the shaft body at one end of the spline, a first shaft end is arranged in the middle of one end of the shaft body, a connecting head is arranged at the middle of one end of the first shaft end away from the first shaft end, an oil filling hole is arranged in the middle of one end of the connecting head away from the first shaft end, an oil inlet channel connected to the oil filling hole is arranged in the shaft body, the oil inlet channel directly reaches the middle of the spline in the middle of the shaft body, an oil seepage channel is arranged on the periphery of one end of the oil inlet channel away from the oil filling hole, an oil seepage hole is arranged at the position where the oil seepage channel connects to the splines, and a second shaft end is arranged in the middle of one end of the shaft body away from the first shaft end.

[0006] Preferably, the spline is formed on the outer surface of the shaft body, and the oil retaining ring is formed on the outer surface of the shaft body. The spline is used for the spline shaft to cooperate with the spline of an external part, and the oil retaining ring can block the lubricating oil between the splines to prevent the lubricating oil between the splines from flowing out, thereby reducing the loss of lubricating oil.

[0007] Preferably, the first shaft end is formed at the end of the shaft body, and the connecting head is formed at the end of the first shaft end, and the first shaft end and the connecting head are used to connect the spline shaft to a machine.

[0008] Preferably, the oil filling hole is formed in the middle of the connecting head, and the oil inlet passage is formed in the middle of the shaft body. Lubricating oil can be injected into the spline shaft using a syringe through the oil filling hole, and the lubricating oil will enter the shaft body through the oil inlet passage. The oil inlet passage can also store a portion of the lubricating oil.

[0009] Preferably, the oil seepage channel is formed in the shaft body at the periphery of the oil inlet channel.

[0010] Preferably, the oil seepage hole is formed on the shaft body, and the lubricating oil in the oil inlet passage will seep out through the oil seepage hole to lubricate the spline and the connecting parts of the spline.

[0011] Preferably, the second shaft end is formed at the end of the shaft body, and the second shaft end is used to connect the spline shaft to a machine.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the spline shaft that is easy to lubricate, by providing an oil filling hole, an oil inlet passage, an oil seepage passage and an oil seepage hole, when the spline needs to be lubricated, there is no need to remove the components around the spline. The lubricating oil can be injected into the spline shaft through the oil filling hole using a syringe, and the oil can seep out through the oil seepage hole to lubricate between the splines, which is very convenient; the oil retaining ring can block the lubricating oil between the splines to prevent the lubricating oil between the splines from flowing out, thereby reducing the loss of the lubricating oil; the oil inlet passage can also store a portion of the lubricating oil, which gradually seeps out through the oil seepage passage and the oil seepage hole during the operation of the spline shaft, thereby achieving a long-term lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a front cross-sectional view of the utility model;

[0017] Figure 3 It is a top sectional view of the utility model;

[0018] In the figure: 1, shaft body; 2, spline; 3, oil retaining ring; 4, first shaft end; 5, connector; 6, oil filling hole; 7, oil inlet channel; 8, oil seepage channel; 9, oil seepage hole; 10, second shaft end. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In this embodiment, Figure 1-3 It is given that the utility model includes a shaft body 1, a spline 2 is arranged on the periphery of the shaft body 1, an oil retaining ring 3 is arranged on the periphery of the shaft body 1 at one end of the spline 2, a first shaft end 4 is arranged in the middle of one end of the shaft body 1, a connector 5 is arranged in the middle of one end of the first shaft end 4 away from the shaft body 1, an oil filling hole 6 is arranged in the middle of the end of the connector 5 away from the first shaft end 4, an oil inlet channel 7 connected with the oil filling hole 6 is arranged in the shaft body 1, the oil inlet channel 7 directly reaches the middle of the spline 2 in the middle of the shaft body 1, an oil seepage channel 8 is arranged on the periphery of the end of the oil inlet channel 7 away from the oil filling hole 6, the oil seepage channel 8 is connected to the position between the splines 2 and an oil seepage hole 9 is arranged, and a second shaft end 10 is arranged in the middle of the end of the shaft body 1 away from the first shaft end 4.

[0021] Among them, the spline 2 is formed on the outer surface of the shaft body 1, and the oil retaining ring 3 is formed on the outer surface of the shaft body 1. The spline 2 is used for the spline matching of the spline shaft and the external parts. The oil retaining ring 3 can block the lubricating oil between the splines 2 to prevent the lubricating oil between the splines 2 from flowing out, thereby reducing the loss of lubricating oil.

[0022] Among them, the first shaft end 4 is formed at the end of the shaft body 1, and the connecting head 5 is formed at the end of the first shaft end 4. The first shaft end 4 and the connecting head 5 are used to connect the spline shaft to the machine. The oil filling hole 6 is formed in the middle of the connecting head 5, and the oil inlet channel 7 is formed in the middle of the shaft body 1. The lubricating oil can be injected into the spline shaft using a syringe through the oil filling hole 6. The lubricating oil will enter the shaft body 1 through the oil inlet channel 7, and the oil inlet channel 7 can also store a part of the lubricating oil.

[0023] Among them, the oil seepage channel 8 is formed in the shaft body 1 outside the oil inlet channel 7, and the oil seepage hole 9 is formed on the shaft body 1. The lubricating oil in the oil inlet channel 7 will seep out through the oil seepage hole 9 to lubricate the spline 2 and the connecting parts of the spline 2.

[0024] The second shaft end 10 is formed at the end of the shaft body 1, and the second shaft end 10 is used to connect the spline shaft to the machine.

[0025] Working principle: The first shaft end 4 and the second shaft end 10 are used to connect the spline shaft to the machine. The second shaft end 10 is the driving end of the spline shaft. The connector 5 is exposed to the outside. When lubricating the spline shaft, a syringe can be used to inject the lubricating oil into the oil inlet channel 7 through the oil filling hole 6. The lubricating oil entering the oil inlet channel 7 will seep out between the splines 2 through the oil seepage channel 8 and the oil seepage hole 9, and lubricate the splines 2 and the parts connected to the splines 2. The oil retaining ring 3 can block the lubricating oil between the splines 2 to prevent the lubricating oil between the splines 2 from flowing out, thereby reducing the loss of the lubricating oil. After injecting the lubricating oil, a rubber plug can be used to cover the oil filling hole 6. The oil inlet channel 7 can also store a portion of the lubricating oil, which will gradually seep out through the oil seepage channel 8 and the oil seepage hole 9 during the operation of the spline shaft, thereby achieving a long-term lubrication effect.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spline shaft that is easy to lubricate, comprising a shaft body (1), characterized in that: The shaft body (1) is provided with a spline (2) on its periphery, and an oil retaining ring (3) is provided on its periphery at one end of the spline (2). A first shaft end (4) is provided at the middle of one end of the shaft body (1), and a connector (5) is provided at the middle of one end of the shaft body (1). An oil injection hole (6) is provided at the middle of one end of the connector (5) away from the first shaft end (4). An oil inlet passage (7) connected to the oil injection hole (6) is provided inside the shaft body (1), and the oil inlet passage (7) directly reaches the middle of the spline (2) in the middle of the shaft body (1). An oil seepage passage (8) is provided at the periphery of one end of the oil inlet passage (7) away from the oil injection hole (6), and an oil seepage hole (9) is provided at a position where the oil seepage passage (8) is connected to the spline (2). A second shaft end (10) is provided at the middle of one end of the shaft body (1) away from the first shaft end (4).

2. A spline shaft that is easy to lubricate according to claim 1, characterized in that: The spline (2) is formed on the outer surface of the shaft body (1), and the oil retaining ring (3) is formed on the outer surface of the shaft body (1).

3. A spline shaft that is easy to lubricate according to claim 1, characterized in that: The first shaft end (4) is formed at the end of the shaft body (1), and the connecting head (5) is formed at the end of the first shaft end (4).

4. A spline shaft that is easy to lubricate according to claim 1, characterized in that: The oil filling hole (6) is formed in the middle of the connecting head (5), and the oil inlet passage (7) is formed in the middle of the shaft body (1).

5. The spline shaft that is easy to lubricate according to claim 1, characterized in that: The oil seepage channel (8) is formed in the shaft body (1) at the periphery of the oil inlet channel (7).

6. The spline shaft that is easy to lubricate according to claim 1, characterized in that: The oil seepage hole (9) is formed on the shaft body (1).

7. The spline shaft that is easy to lubricate according to claim 1, characterized in that: The second shaft end (10) is formed at the end of the shaft body (1).

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