Wear-resistant half axle gear

Abstract

The utility model relates to the technical field of half axle gears, in particular to a wear-resistant half axle gear which comprises a gear body and a plurality of conical gear teeth evenly distributed on the gear body, and a lubricating device and an oil storage cavity used for storing lubricating oil are arranged in the gear body. The lubricating device comprises a plurality of oil containing cavities which are formed in the gear body and communicate with the oil storage cavity, and extrusion oil outlet mechanisms which are arranged among the conical gear teeth and connected with the oil containing cavities. According to the utility model, the extrusion oil outlet mechanisms are arranged on the tooth spaces among the conical gear teeth, so that when the half axle gear is meshed with other gears, the other gears extrude the telescopic rod to automatically and uniformly extrude lubricating oil in the oil accommodating cavity, and abrasion caused by gear friction is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of half-axle gears, in particular to a wear-resistant half-axle gear. Background Technique

[0002] The half-axle gear is a gear component inside an automotive differential. It is an important transmission component connecting the differential and the driving wheel. It is usually conical and is used to transmit the power output by the differential to the wheel, thereby driving the vehicle to run. However, the half-axle gear is in a continuous high-load working state during the operation of the vehicle, and there will be a large contact pressure and impact between the gears for a long time, resulting in easy wear of the gears.

[0003] There is a kind of existing half-axle gear that has an oil cavity hollowed out inside, and uses the centrifugal force generated by the rotation of the gear to throw out the lubricating oil to achieve automatic lubrication. However, when the gear rotates too fast during use, it is extremely easy to spill too much lubricating oil, resulting in waste, or when the gear rotates too slowly, it is not enough to effectively throw out the lubricating oil, resulting in ineffective lubrication. Content of the Utility Model

[0004] In order to solve the problems in the above background technique, the utility model provides a wear-resistant half-axle gear.

[0005] The solution adopted by the utility model to solve its technical problems is: a wear-resistant half-axle gear, including a gear body and a plurality of conical teeth evenly distributed on the gear body. A lubrication device and an oil storage cavity for storing lubricating oil are arranged inside the gear body. The lubrication device includes a plurality of oil placement cavities arranged inside the gear body and communicated with the oil storage cavity, and an extrusion oil outlet mechanism arranged between the conical teeth and connected with the oil placement cavity.

[0006] By adopting the above technical solution, an oil storage cavity is arranged inside the gear body and an extrusion oil outlet mechanism is connected between the conical teeth. When the conical gear meshes with other gears, the lubricating oil can be automatically and evenly extruded onto each tooth surface to quickly form a lubricating film, effectively reducing the wear caused by friction between the gears; and the extrusion of oil can reduce unnecessary overflow to avoid ineffective oil outlet lubrication when the gear rotates too slowly.

[0007] Furthermore, the extrusion oil outlet mechanism includes a telescopic rod movably penetrating through the tooth grooves between the conical gears, an extrusion plate arranged inside the oil placement cavity and fixedly connected with one end of the telescopic rod, and a rebound assembly. The extrusion plate fits the oil placement cavity and a plurality of oil outlet holes are arranged on the end surface.

[0008] By adopting the above technical solution, when other gears mesh and come into contact with the tooth groove, an extrusion force is generated on the telescopic rod, which pushes the extrusion plate in the oil storage cavity. The lubricating oil in the oil storage cavity is extruded from the oil outlet hole into the tooth groove through the piston of the extrusion plate, achieving the lubrication effect. And the rebound assembly can reset the telescopic rod after extrusion for the next extrusion and oil discharge.

[0009] Further, the rebound assembly includes a rebound cavity provided between the oil storage cavity and the tooth groove, an elastic member provided in the rebound cavity, and a connecting plate that abuts against the elastic member and is fixedly connected to the telescopic rod.

[0010] By adopting the above technical solution, after the telescopic rod is stressed and contracts to discharge the lubricating oil, the elastic member of the spring can use its own rebound performance to push up the connecting plate, which can prompt the telescopic rod to return to the initial position, thereby maintaining the continuous and stable operation of the lubrication system.

[0011] Further, a spherical head is provided at the top of the telescopic rod.

[0012] By adopting the above technical solution, the spherical head in the shape of a hemisphere can reduce the contact stress during the meshing process, effectively reducing the resistance and jamming to the teeth of other gears.

[0013] Further, a recovery hole communicating with the oil storage cavity is provided at the top end of the gear tooth groove, and a filter screen is provided on the recovery hole.

[0014] By adopting the above technical solution, the recovery hole is located at the horizontal bottom of the tapered tooth groove in the shape of a slope, and the excessive lubricating oil on the gear can be recovered and input into the oil storage cavity. And the detachable filter screen above can block the iron filings in the lubricating oil.

[0015] Further, an oil filling hole is provided at the top end of the gear body, and the oil filling hole communicates with the oil storage cavity.

[0016] By adopting the above technical solution, lubricating oil can be directly added to the oil storage cavity through the oil filling hole, and then the lubricating oil flows to each oil storage cavity communicated with the oil storage cavity.

[0017] In summary, the beneficial effects of the present utility model are as follows: during the rotation and meshing of the gears, by squeezing the telescopic rod, the oil outlet hole of the oil storage cavity is pressed out into the tooth groove, and the lubricating oil can be automatically and evenly extruded onto the tooth surface to form a lubricating film, effectively reducing friction and wear.

[0018] The above description is only an overview of the technical solution of the present utility model. In order to be able to more clearly understand the technical means of the present utility model, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the accompanying drawings as follows. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of this embodiment;

[0020] Figure 2 is a sectional view of this embodiment;

[0021] Figure 3 is a schematic diagram of the A surface of this embodiment;

[0022] Figure 4 is a schematic diagram of the oil extrusion mechanism of this embodiment.

[0023] In the figure: 1. Gear body; 2. Bevel gear; 21. Tooth groove; 3. Oil storage cavity; 4. Oil placement cavity; 5. Lubrication device; 51. Telescopic rod; 511. Ball head; 52. Extrusion plate; 521. Oil outlet hole; 53. Rebound assembly; 531. Rebound cavity; 532. Elastic member; 533. Connecting plate; 6. Recovery hole; 61. Filter screen; 7. Oil filling hole. Specific embodiments

[0024] In order to make the content of the present utility model easier to be clearly understood, the following further illustrates the present utility model according to specific embodiments in conjunction with the drawings.

[0025] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 cannot be understood as a limitation of the present utility model. Unless otherwise specified, the meaning of "plurality" is two or more.

[0026] Unless otherwise clearly specified and defined, 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 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 utility model can be understood through specific situations.

[0027] Such as Figures 1 to 4As shown in the figure, a wear-resistant half shaft gear can be automatically and evenly lubricated to avoid wear. In this embodiment, it includes a gear body 1 and a plurality of tapered teeth evenly distributed on the gear body 1. A lubrication device 5 and an oil storage cavity 3 for storing lubricating oil are arranged inside the gear body 1. The lubrication device 5 includes a plurality of oil storage cavities 4 arranged inside the gear body and communicated with the oil storage cavity 3, and an extrusion oil outlet mechanism arranged between each tapered tooth and connected to the oil storage cavity 4.

[0028] The main structure of the half shaft gear in this embodiment includes a gear body 1 and precision tapered teeth evenly arranged thereon. Tooth grooves 21 are formed between each tapered gear 2. An oil storage cavity 3 with an annular cavity filled with lubricating oil is arranged inside the gear body 1. Oil storage cavities 4 are arranged inside the gear body 1 corresponding to the positions of each tooth groove 21. The oil storage cavities 4 are communicated with the oil storage cavity 3 through flow channels. After installation, it can be ensured that the lubricating oil in the oil storage cavity 3 can flow into the oil storage cavities 4. An extrusion oil outlet mechanism is arranged on the end surface where each tooth groove 21 meshes with other gears. After meshing, the lubricating oil in the oil storage cavity 4 can be timely and evenly extruded onto the surface of the tapered teeth in meshing through the extrusion oil outlet mechanism, quickly forming a lubricating film, effectively reducing the friction and wear caused by direct contact between gears. And the output amount of the lubricating oil can be accurately controlled, avoiding the situation that the lubricating oil cannot be effectively sprayed onto the gear tooth surface due to insufficient centrifugal force when the gear rotates slowly, effectively reducing unnecessary overflow of the lubricating oil, improving the lubrication efficiency, and avoiding pollution to surrounding components.

[0029] As Figure 2 and Figure 3 shown in the figure, the extrusion oil outlet mechanism of this embodiment includes a telescopic rod 51 movably penetrating through the tooth grooves 21 between each tapered gear 2, an extrusion plate 52 arranged inside the oil storage cavity 4 and fixedly connected to one end of the telescopic rod 51, and a rebound assembly 53. The extrusion plate 52 is adapted to the oil storage cavity 4 and a plurality of oil outlet holes 521 are arranged on the end surface. When other gears mesh and contact the tooth groove 21, an extrusion force is generated on the telescopic rod 51, thereby pushing the extrusion plate 52 in the oil storage cavity 4. The lubricating oil in the oil storage cavity 4 is extruded from the oil outlet holes 521 through the piston pushing pressure of the extrusion plate 52 onto the tooth groove 21 to form a lubricating film, achieving the lubrication effect. And the rebound assembly 53 can reset the telescopic rod 51 after extrusion for the next extrusion of oil.

[0030] Specifically, as Figure 3As shown in the figure, the rebound assembly 53 of this embodiment includes a rebound cavity 531 provided between the oil storage cavity 4 and the tooth groove 21, an elastic member 532 provided in the rebound cavity 531, and a connecting plate 533 that abuts against the elastic member 532 and is fixedly connected to the telescopic rod 51. When the telescopic rod 51 contracts due to the pressure generated by the meshing of other gears, thereby discharging the lubricating oil in the oil storage cavity 4 into the tooth groove 21 to complete lubrication, the elastic member 532 of the spring, by virtue of its own rebound performance, is converted into an upward thrust, and this force is transmitted to the contracted telescopic rod 51 through the connecting plate 533, enabling it to quickly return to the initial unloaded state, ensuring that the telescopic rod 51 can be prepared for the next lubricating oil extrusion work, thereby maintaining the continuous and stable operation of the lubrication system.

[0031] To prevent partial blockage of the meshing of the gears by the exposed part of the telescopic rod 51 in the tooth groove 21, as Figure 4 shown, a spherical head 511 is provided at the top of the telescopic rod 51 in this embodiment. The hemispherical spherical head 511 can reduce the contact stress during meshing, reduce the additional resistance suffered by the gears during meshing, and effectively reduce the resistance and jamming to the teeth of other gears. Ensure the smoothness of the gears during meshing and the efficient and stable operation of the gear transmission system.

[0032] As Figure 2 shown, in this embodiment, a recovery hole 6 communicating with the oil storage cavity 3 is provided at the top end of the gear tooth groove 21, and a filter screen 61 is provided on the recovery hole 6. The recovery hole 6 is arranged on the inclined slope near the end of the horizontal bottom of the tapered tooth groove 21 with a slope, which can ensure that during the operation of the gears, the lubricating oil that fails to effectively adhere to the gear tooth surface or overflows due to excess can smoothly gather into the recovery hole 6 along the slope of the tooth groove 21 and flow back to the oil storage cavity 3 through this hole, realizing the recycling of the lubricating oil. And to ensure the purity of the recovered lubricating oil and prevent impurities such as iron filings from mixing in, a detachable filter screen 61 is installed on the recovery hole 6. It can effectively intercept the metal chips in the lubricating oil.

[0033] As Figure 1 shown, an oil filling hole 7 is provided at the top of the gear body 1 in this embodiment, and the oil filling hole 7 communicates with the oil storage cavity 3. Through the oil filling hole 7, lubricating oil can be directly added to the oil storage cavity 3, and then the lubricating oil flows to each oil storage cavity 4 communicating with the oil storage cavity 3.

[0034] In summary, the beneficial effects of this embodiment are as follows: In this embodiment, an oil storage cavity 3 is provided inside the gear body 1 for storing lubricating oil, and the lubricating oil is guided to the tooth grooves 21 between each conical tooth through the connected oil placement cavity 4 and the oil extrusion mechanism. It includes a telescopic rod 51, a pressing plate 52 and a spring-back assembly 53. When the gear meshes with other gears, the telescopic rod 51 is forced to push the pressing plate 52, so that the lubricating oil in the oil placement cavity 4 is evenly coated on the meshing tooth surfaces through the oil outlet holes 521 to form a lubricating film, effectively reducing the direct contact wear between the gears. The spring-back assembly 53 ensures that the telescopic rod 51 can quickly reset after completing one lubrication action, preparing for the next lubrication and ensuring the continuity and stability of the lubrication process.

[0035] The above-described embodiments are only the preferred embodiments of the present invention and cannot be used to limit the protection scope of the present invention. Any non-substantive changes and modifications made by those skilled in the art on the basis of the present invention shall fall within the protection scope of the present invention.

Claims

1. A wear-resistant differential side gear, comprising a gear body and a plurality of tapered teeth evenly distributed on the gear body, characterized in that, A lubrication device and an oil storage cavity for storing lubricating oil are provided inside the gear body. The lubrication device includes a plurality of oil placement cavities provided inside the gear body and communicating with the oil storage cavity, and an extrusion oil outlet mechanism provided between each of the conical teeth and connected to the oil placement cavity.

2. The wear-resistant half shaft gear according to claim 1, characterized in that, The extrusion oil outlet mechanism includes a telescopic rod movably penetrating through the tooth grooves between each of the conical teeth, an extrusion plate provided inside the oil placement cavity and fixedly connected to one end of the telescopic rod, and a rebound assembly. The extrusion plate fits the oil placement cavity and is provided with a plurality of oil outlet holes on its end face.

3. The wear-resistant half shaft gear according to claim 2, wherein, The rebound assembly includes a rebound cavity provided between the oil placement cavity and the tooth groove, an elastic member provided inside the rebound cavity, and a connecting plate that abuts against the elastic member and is fixedly connected to the telescopic rod.

4. The wear-resistant half shaft gear according to claim 3, characterized in that, A spherical head is provided at the top of the telescopic rod.

5. A wear-resistant half shaft gear according to claim 4, characterized in that, A recovery hole communicating with the oil storage cavity is provided at the top end of the gear tooth groove, and a filter screen is provided on the recovery hole.

6. The wear-resistant half shaft gear according to claim 5, characterized in that, An oil filling hole is provided at the top end of the gear body, and the oil filling hole communicates with the oil storage cavity.

Images