Split type wheel hub, drive axle and engineering machinery

Abstract

The utility model belongs to the technical field of engineering machinery, disclose split type wheel hub, drive axle and engineering machinery. Split type wheel hub includes wheel hub body and compression ring, and the outer circumferential surface of wheel hub body is provided with convex part, and the outer circumferential surface of convex part includes first rim mounting surface, and one end of wheel hub body is provided with spline;Compression ring is sleeved in wheel hub body, and is detachably connected with the side of convex part facing spline, and the outer circumferential surface of compression ring includes second rim mounting surface;First rim mounting surface is flush with second rim mounting surface, and first rim mounting surface and second rim mounting surface are used for installing rim together. When machining spline, can separate compression ring with wheel hub body, thereby leaving enough operating space for spline machining equipment, when machining rim mounting surface, can connect compression ring with wheel hub body, thereby guaranteeing the integrity of wheel hub mounting surface, the machining condition of big volume, complex shape wheel hub part is reduced, and the machining feasibility of wheel hub part can be improved.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a split-type wheel hub, drive axle, and engineering machinery. Background Technology

[0002] In construction machinery, the wheel hub plays a crucial role, transmitting the rotational power and torque from the drive shaft to the tires. The wheel hub is machined with splines for engaging with the splines on the drive shaft to transmit rotational power and torque. The wheel hub also has a rim mounting surface, to which the tire rim is interference-fitted.

[0003] When machining splines on a wheel hub, either a gear shaping method or a gear hobbing method can be used. The gear shaping method uses a tool similar to a broach or a cutter to cut layer by layer along the axial direction (straight line) of the spline. The gear hobbing method uses a worm-like rotating hob, which meshes and rolls with the wheel hub like two gears, cutting out the spline through continuous generating motion.

[0004] Because wheel hubs need to withstand heavy loads and transmit huge torques, they must have sufficient structural strength and size. Due to their large size, limited equipment resources make it difficult to use gear shaping when machining splines. When using gear hobbing, the hob will collide and interfere with the protruding rim mounting surface on the outer side of the wheel hub when it enters the machining position or rotates. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type wheel hub, drive axle and engineering machinery, which reduces the processing conditions of large and complex wheel hub parts, and improves the processing feasibility of wheel hub parts when equipment resources are available.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Split-type wheels include:

[0008] A hub body, wherein a protrusion is provided on the outer peripheral surface of the hub body, the outer peripheral surface of the protrusion includes a first rim mounting surface, and a spline is provided at one end of the hub body;

[0009] A pressure ring is sleeved on the hub body and detachably connected to the side of the protrusion facing the spline. The outer peripheral surface of the pressure ring includes a second rim mounting surface.

[0010] The first rim mounting surface is flush with the second rim mounting surface, and both the first rim mounting surface and the second rim mounting surface are used together to mount the rim.

[0011] As a preferred technical solution for split-type wheel hubs, the pressure ring and the protrusion are connected by screws.

[0012] As a preferred technical solution for a split-type wheel hub, a positioning structure is provided between the wheel hub body and the pressure ring, and the positioning structure is used to fix the relative position of the pressure ring and the wheel hub body.

[0013] As a preferred technical solution for a split-type wheel hub, the positioning structure includes a first positioning hole disposed on the protrusion, a second positioning hole disposed on the pressure ring, and a positioning pin that is positioned and inserted into the first positioning hole and the second positioning hole.

[0014] As a preferred technical solution for a split-type wheel hub, a sealing ring is also included, which is disposed between the pressure ring and the wheel hub body.

[0015] As a preferred technical solution for a split-type wheel hub, an annular fixing groove is provided on the outer circumferential surface of the wheel hub body, and part of the sealing ring is fixed in the annular fixing groove.

[0016] As a preferred technical solution for a split-type wheel hub, the outer peripheral surface of the pressure ring further includes a limiting surface, which protrudes from the second wheel rim mounting surface and is used to limit the wheel rim.

[0017] The drive axle includes a drive shaft, a tire, and a split wheel hub as described in any of the above embodiments. The drive shaft is provided with splines, the drive shaft is connected to the wheel hub body, and the splines on the drive shaft mesh with the splines on the wheel hub body. The rim of the tire is mounted on the first rim mounting surface and the second rim mounting surface.

[0018] Construction machinery, including the drive axle of the above-mentioned solution.

[0019] As a preferred technical solution for construction machinery, the construction machinery is a heavy-duty forklift.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a split-type wheel hub, including a hub body and a pressure ring. The outer circumferential surface of the hub body has a protrusion, and the outer circumferential surface of the protrusion includes a first rim mounting surface. One end of the hub body is provided with a spline. The pressure ring is sleeved on the hub body and detachably connected to the side of the protrusion facing the spline. The outer circumferential surface of the pressure ring includes a second rim mounting surface. The first rim mounting surface and the second rim mounting surface are flush, and both are used to mount the rim. The split-type wheel hub structure provided by this utility model is novel. Its hub body and pressure ring can be connected and separated. When machining the spline, the pressure ring can be separated from the hub body, thus providing sufficient operating space for the spline machining equipment. When machining the rim mounting surface, the pressure ring can be connected to the hub body, thus ensuring the integrity of the hub mounting surface. This reduces the machining conditions for large and complex-shaped wheel hub parts, and improves the machining feasibility of wheel hub parts with limited equipment resources. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the split-type wheel hub provided in this embodiment of the utility model.

[0023] In the picture:

[0024] 10. Hub body; 11. Protrusion; 111. First rim mounting surface; 12. Spline; 20. Pressure ring; 21. Second rim mounting surface; 22. Limiting surface; 30. Screw; 40. Locating pin; 50. Sealing ring. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] like Figure 1 As shown, this embodiment of the utility model provides a split-type wheel hub, including a wheel hub body 10 and a pressure ring 20. The outer peripheral surface of the wheel hub body 10 is provided with a protrusion 11, and the outer peripheral surface of the protrusion 11 includes a first rim mounting surface 111. One end of the wheel hub body 10 is provided with a spline 12. The pressure ring 20 is sleeved on the wheel hub body 10 and is detachably connected to the side of the protrusion 11 facing the spline 12. The outer peripheral surface of the pressure ring 20 includes a second rim mounting surface 21. The first rim mounting surface 111 and the second rim mounting surface 21 are flush, and the first rim mounting surface 111 and the second rim mounting surface 21 are used together to mount the rim. The split-type wheel hub structure provided by this utility model embodiment is novel. Its wheel hub body 10 and pressure ring 20 can be connected and separated. When machining spline 12, the pressure ring 20 can be separated from the wheel hub body 10, thereby leaving enough operating space for the spline 12 machining equipment. When machining the rim mounting surface, the pressure ring 20 can be connected to the wheel hub body 10, thereby ensuring the integrity of the wheel hub mounting surface. This reduces the machining conditions of large and complex-shaped wheel hub parts and improves the machining feasibility of wheel hub parts when equipment resources are available.

[0030] In this embodiment, the pressure ring 20 and the protrusion 11 are connected by a screw 30. The pressure ring 20 has a through hole, and the protrusion 11 has a threaded hole. The screw 30 passes through the through hole and is threaded into the threaded hole. The connection method is simple and easy to operate, and the connection is firm. In other embodiments, the pressure ring 20 and the protrusion 11 can also be connected by bolts. The pressure ring 20 has a first through hole, and the protrusion 11 has a second through hole. The bolt passes through the first through hole and the second through hole and is threaded into a nut.

[0031] Furthermore, a positioning structure is provided between the hub body 10 and the pressure ring 20. This positioning structure is used to fix the relative position of the pressure ring 20 and the hub body 10, ensuring the accuracy of assembly and disassembly of the hub body 10 and the pressure ring 20. In this embodiment, the positioning structure includes a first positioning hole disposed on the protrusion 11, a second positioning hole disposed on the pressure ring 20, and a positioning pin 40 that is positioned and inserted into the first and second positioning holes. In other embodiments, the positioning structure may further include a positioning protrusion and a positioning hole. The positioning protrusion is disposed on one of the protrusion 11 and the pressure ring 20, and the positioning hole is disposed on the other of the protrusion 11 and the pressure ring 20. The positioning protrusion is positioned and inserted into the positioning hole.

[0032] In this embodiment, the split-type wheel hub also includes a sealing ring 50, which is disposed between the pressure ring 20 and the wheel hub body 10 to ensure the sealing between the wheel hub body 10 and the pressure ring 20. Furthermore, an annular fixing groove is formed on the outer circumferential surface of the wheel hub body 10, and part of the sealing ring 50 is fixed within the annular fixing groove. This arrangement prevents the sealing ring 50 from shifting, improving its stability.

[0033] In this embodiment, the outer peripheral surface of the pressure ring 20 also includes a limiting surface 22. The limiting surface 22 protrudes from the second rim mounting surface 21 and is used to limit the rim. When the rim is mounted on the first rim mounting surface 111 and the second rim mounting surface 21, the limiting surface 22 can limit the mounting position of the rim and improve the convenience of rim installation.

[0034] This utility model embodiment also provides a drive axle, including a drive shaft, a tire and the aforementioned split-type wheel hub. The drive shaft is provided with a spline, the drive shaft is connected to the wheel hub body 10, and the spline on the drive shaft meshes with the spline 12 on the wheel hub body 10. The rim of the tire is mounted on the first rim mounting surface 111 and the second rim mounting surface 21.

[0035] This utility model embodiment also provides an engineering machinery, including the aforementioned drive axle. The engineering machinery can be a heavy-duty forklift or a heavy-duty truck, etc.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A split-type wheel hub, characterized in that, include: The hub body (10) has a protrusion (11) on its outer peripheral surface. The outer peripheral surface of the protrusion (11) includes a first rim mounting surface (111). A spline (12) is provided at one end of the hub body (10). A pressure ring (20) is sleeved on the hub body (10) and detachably connected to the side of the protrusion (11) facing the spline (12). The outer peripheral surface of the pressure ring (20) includes a second rim mounting surface (21). The first rim mounting surface (111) is flush with the second rim mounting surface (21), and the first rim mounting surface (111) and the second rim mounting surface (21) are used together to mount the rim.

2. The split-type wheel hub according to claim 1, characterized in that, The pressure ring (20) is connected to the protrusion (11) by screws (30).

3. The split-type wheel hub according to claim 1, characterized in that, A positioning structure is provided between the hub body (10) and the pressure ring (20), the positioning structure being used to fix the relative position of the pressure ring (20) and the hub body (10).

4. The split-type wheel hub according to claim 3, characterized in that, The positioning structure includes a first positioning hole disposed on the protrusion (11), a second positioning hole disposed on the pressure ring (20), and a positioning pin (40) that is inserted into the first positioning hole and the second positioning hole.

5. The split-type wheel hub according to claim 1, characterized in that, It also includes a sealing ring (50), which is disposed between the pressure ring (20) and the hub body (10).

6. The split-type wheel hub according to claim 5, characterized in that, The outer circumferential surface of the hub body (10) is provided with an annular fixing groove, and part of the sealing ring (50) is fixed in the annular fixing groove.

7. The split-type wheel hub according to claim 1, characterized in that, The outer peripheral surface of the pressure ring (20) also includes a limiting surface (22), which protrudes from the second rim mounting surface (21) and is used to limit the rim.

8. A drive axle, characterized in that, The device includes a drive shaft, a tire, and a split-type wheel hub as described in any one of claims 1-7. The drive shaft is provided with a spline and is connected to the wheel hub body (10). The spline on the drive shaft meshes with the spline (12) on the wheel hub body (10). The rim of the tire is mounted on the first rim mounting surface (111) and the second rim mounting surface (21).

9. Construction machinery, characterized in that, Includes the drive axle as described in claim 8.

10. The engineering machinery according to claim 9, characterized in that, The construction machinery in question is a heavy-duty forklift.

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