Axle wheel end inflation structure and axle

Abstract

The utility model discloses an axle wheel end inflation structure and an axle. The axle wheel end inflation structure comprises an axle, a hub, a connecting pipe, an end cover, a pipe joint, an adapter and an outer flexible gasket. The key point is that a pipe joint is inserted into a fixing hole of an end cover, the outer peripheral wall of the inner end of the pipe joint is in threaded connection with a locking nut, the pipe joint is rotationally connected with a connecting pipe and is provided with an air hole, the air hole penetrates through the pipe joint internally and externally and is communicated with the connecting pipe, and the outer end of the pipe joint is further sleeved with an outer flexible gasket which is located outside the end cover and abuts against the end cover; the adapter is located on the outer side of the outer flexible gasket and is in threaded connection with the pipe connector, and the adapter abuts against the outer flexible gasket and communicates with the air hole. Through the structural design, the installation angle of the pipe connector can be adjusted, it is ensured that the pipe connector and the air nozzle are located on the same plane, and good sealing is formed between the air guide pipe and the adapter and the air nozzle.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an axle wheel end inflatable structure and an axle. Background Technology

[0002] The axle wheel-end inflation structure of heavy-duty vehicles is used to connect inflation hoses, which connect to the valves of the axle tires for inflation. Existing axle wheel-end inflation structures include an axle, hub, end cap, pipe connector, and adapter. The axle has a connecting pipe inside, the hub is rotatably connected to the axle, the end cap is located on the outside of the axle and fixed to the outer end face of the hub, the pipe connector is fixed to the outer end of the end cap and rotatably connected to the connecting pipe, and the pipe connector communicates with the connecting pipe. The adapter is used to connect the inflation hose and is threadedly connected to the pipe connector, and the adapter communicates with the pipe connector. When installing the adapter, the adapter and pipe connector are aligned and rotated into place to complete the installation. However, the above structure has poor sealing performance, affecting normal use. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an axle wheel-end inflation structure and axle that achieves proper alignment between the pipe interface and the air nozzle by setting an adapter with an adjustable pipe interface installation angle to ensure good sealing performance.

[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0005] The axle wheel end air-filled structure includes the axle, wheel hub, connecting pipe, end cap, pipe joint, adapter, and outer flexible gasket;

[0006] The wheel hub is rotatably connected to the outer peripheral wall of the axle;

[0007] The connecting pipe is located inside the axle;

[0008] The end cap is located on the outside of the axle and is fixedly covered on the outer end of the wheel hub. The outer end of the end cap has a fixing hole that penetrates the end cap.

[0009] The pipe connector is inserted into the fixing hole and its inner end is threaded with a locking nut located between the end cap and the connecting pipe. The pipe connector is rotatably connected to the connecting pipe and has an air hole. The air hole penetrates the pipe connector and communicates with the connecting pipe. The outer end of the pipe connector is also fitted with an outer flexible washer located outside the end cap and abuts against the end cap.

[0010] The adapter is located outside the outer flexible gasket and is threadedly connected to the pipe joint. The adapter abuts against the outer flexible gasket and communicates with the air hole.

[0011] Furthermore, the pipe fitting is fitted with an outer gasket between the inner end face of the adapter and the outer end face of the outer flexible gasket, and the inner and outer ends of the outer gasket abut against the outer end face of the outer flexible gasket and the inner end face of the adapter, respectively.

[0012] Furthermore, the outer peripheral wall of the pipe joint protrudes outward to form an annular stepped portion. The stepped portion mates with the fixing hole and its outer end is located outside the end cap. The outer flexible washer is sleeved on the outer end of the stepped portion and abuts against the outer end face of the end cap. The adapter is located outside the stepped portion and is threadedly connected to the outer peripheral wall of the pipe joint.

[0013] Furthermore, the end cap has an outer inner wall corresponding to the outer end face of the end cap, and the pipe connector is fitted with an inner flexible washer between the outer end face of the locking nut and the outer inner wall, and the inner end and outer end of the inner flexible washer abut against the outer end face of the locking nut and the outer inner wall, respectively.

[0014] Furthermore, the pipe fitting has an inner washer fitted between the inner end face of the inner flexible washer and the outer end face of the locking nut, and the inner end and outer end of the inner washer abut against the outer end face of the locking nut and the inner end face of the inner flexible washer, respectively.

[0015] Furthermore, the outer peripheral wall of the pipe joint protrudes outward to form an annular stepped portion, the stepped portion mates with the fixing hole and its inner end is located inside the end cap, the inner flexible washer is sleeved on the inner end of the stepped portion, and the inner gasket is located on the inner side of the stepped portion.

[0016] Furthermore, the vent is provided with a conduit communicating with it, the conduit passing inward through the locking nut and extending into the connecting pipe, the conduit and the connecting pipe being in clearance fit and communicating with each other.

[0017] Furthermore, an axle cover is tightly fitted to the inner peripheral wall of the outer end of the inner cavity of the axle, and an installation hole is opened on the outer end face of the axle cover, which penetrates the axle cover from the inside and outside. The inner end of the connecting pipe is engaged with the installation hole.

[0018] This utility model's axle wheel-end inflation structure uses an outer flexible washer fitted over the outer end of a pipe connector, abutting against the end cap. An adapter is located outside the flexible washer, abutting against it and communicating with the air vent. When adjusting the pipe interface installation angle of the adapter, the adapter rotates, causing the pipe interface to face the air vent. During rotation, the adapter moves axially inward or outward under the elastic force of the flexible washer until the pipe interface aligns with the air vent. The flexible washer provides axial space for the adapter, allowing for adjustment of the pipe interface installation angle and ensuring the pipe interface and air vent are on the same plane. This avoids the need for an excessively long air vent due to misalignment between the pipe connector and air vent, preventing the air vent from affecting its sealing due to swaying or shaking. This ensures a good seal between the air vent, the adapter, and the air vent. This utility model's axle wheel-end inflation structure is simple, easy to install, and provides excellent sealing performance.

[0019] This utility model embodiment also provides an axle, including the axle wheel end inflatable structure described in any of the above embodiments. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the pneumatic structure at the wheel end of the axle according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of part A. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0023] like Figures 1 to 2 As shown, this utility model embodiment provides an axle wheel end air-inflating structure, which is installed on the axle of a heavy vehicle and includes an axle 1, a wheel hub 2, a connecting pipe 3, an end cap 4, a pipe joint 5, an adapter 6, and an outer flexible washer 7.

[0024] A shaft cover 11 is tightly fitted to the inner peripheral wall of the outer end of the inner cavity of the axle 1. A mounting hole penetrating the outer end face of the shaft cover 11 is formed in the middle of the outer end face. The wheel hub 2 is rotatably connected to the outer peripheral wall of the axle 1 via a bearing and is used to mount a tire. The tire's steel rim 21 is equipped with a valve stem 211, which connects to the tire's inner cavity. A connecting pipe 3 is located inside the inner cavity of the axle 1 and is used to supply air from the air source to the tire's inner cavity. Specifically, the inner end of the connecting pipe 3 mates with the mounting hole. An end cover 4 is located outside the axle 1 and is fixedly mounted on the outer end of the wheel hub 2. A fixing hole 41 penetrating the end cover 4 is formed inward in the middle of the outer end face of the end cover 4. The end cover 4 has an outer end inner wall 55 corresponding to the outer end face of the end cover 4, and the fixing hole 41 penetrates the outer end inner wall 55.

[0025] The pipe connector 5 is inserted into the fixing hole 41, and its inner end is threaded with a locking nut 52 located between the end cap 4 and the connecting pipe 3. The pipe connector 5 is rotatably connected to the connecting pipe 3 and has an air hole 51. The air hole 51 passes through the pipe connector 5 and communicates with the connecting pipe 3. A conduit 53 communicating with the air hole 51 is provided inside the air hole 51. The conduit 53 passes inward through the locking nut 52 and extends into the connecting pipe 3. The conduit 53 and the connecting pipe 3 are in clearance fit and communicate with each other. Specifically, the inner end of the conduit 53 and the outer end of the connecting pipe 3 are in clearance fit so that the conduit 53 can rotate relative to the connecting pipe 3. The outer end of the pipe connector 5 is also fitted with an outer flexible washer 7 located outside the end cap 4 and abutting against the end cap 4. The outer flexible washer 7 is elastic and is made of elastic materials such as rubber. Specifically, in order to improve structural strength, an annular step portion 50 is formed by protruding outward from the outer peripheral wall of the pipe joint 5. The step portion 50 is engaged with the fixing hole 41 and its outer end is located outside the end cover 4. The inner end of the step portion 50 is located inside the end cover 4. The outer flexible washer 7 is sleeved on the outer end of the step portion 50 and abuts against the outer end face of the end cover 4 to achieve positioning.

[0026] The adapter 6 is located outside the outer flexible washer 7 and is threadedly connected to the pipe connector 5. The adapter 6 is used to connect the inflation pipe 8, which is connected to the valve 211 to inflate the tire. Specifically, the adapter 6 is a three-way connector. More specifically, the adapter 6 is located outside the stepped portion 50 and is threadedly connected to the outer peripheral wall of the pipe connector 5. The adapter 6 abuts against the outer flexible washer 7 and is connected to the air hole 51. When adjusting the pipe interface installation angle of adapter 6, adapter 6 rotates so that the pipe interface faces the air nozzle 211. During the rotation, adapter 6 moves axially inward or outward under the elastic force of the flexible washer until the pipe interface is aligned with the air nozzle 211. That is, the flexible washer provides a space for movement in the axial direction for adapter 6, thereby realizing the adjustment of the pipe interface installation angle and ensuring that the pipe interface and the air nozzle 211 are on the same plane. This avoids the need for an excessively long air guide tube due to the pipe connector 5 and the air nozzle 211 not being on the same plane when installing the air guide tube. This also prevents the excessively long air guide tube from affecting its connection sealing due to swaying or shaking, ensuring a good seal between the air guide tube, adapter 6 and air nozzle 211. The structure is simple and easy to install.

[0027] A protective outer gasket 54 is fitted between the inner end face of the adapter 6 and the outer end face of the outer flexible washer 7 in the pipe connector 5. The inner and outer ends of the outer gasket 54 abut against the outer end face of the outer flexible washer 7 and the inner end face of the adapter 6, respectively, to limit the adapter 6. In this embodiment, an inner flexible washer 56 is fitted between the outer end face of the locking nut 52 and the inner wall 55 of the outer end in the pipe connector 5. Specifically, the inner flexible washer 56 is fitted on the inner end of the stepped portion 50, and the inner flexible washer 56 is elastic and is made of elastic materials such as rubber. The inner and outer ends of the inner flexible washer 56 abut against the outer end face and the inner wall 55 of the outer end of the locking nut 52, respectively, to achieve limitation. Similarly, the inner flexible washer 56 provides a variable space in the axial direction for the pipe connector 5 or the locking nut 52. The pipe fitting 5 has an inner washer 57 for protection and limiting between the inner end face of the inner flexible washer 56 and the outer end face of the locking nut 52. The inner washer 57 is located inside the step portion 50. The inner end and outer end of the inner washer 57 abut against the outer end face of the locking nut 52 and the inner end face of the inner flexible washer 56, respectively, to limit the locking nut 52.

[0028] This utility model's axle wheel-end inflation structure uses an outer flexible washer fitted over the outer end of a pipe connector, abutting against the end cap. An adapter is located outside the flexible washer, abutting against it and communicating with the air vent. When adjusting the pipe interface installation angle of the adapter, the adapter rotates, causing the pipe interface to face the air vent. During rotation, the adapter moves axially inward or outward under the elastic force of the flexible washer until the pipe interface aligns with the air vent. The flexible washer provides axial space for the adapter, allowing for adjustment of the pipe interface installation angle and ensuring the pipe interface and air vent are on the same plane. This avoids the need for an excessively long air vent due to misalignment between the pipe connector and air vent, preventing the air vent from affecting its sealing due to swaying or shaking. This ensures a good seal between the air vent, the adapter, and the air vent. This utility model's axle wheel-end inflation structure is simple, easy to install, and provides excellent sealing performance.

[0029] This utility model embodiment also provides an axle (not shown), including the axle wheel end air-inflating structure described in any of the above embodiments.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An axle wheel end air-filled structure, characterized in that, This includes axles, wheel hubs, connecting pipes, end caps, pipe fittings, adapters, and external flexible washers; The wheel hub is rotatably connected to the outer peripheral wall of the axle; The connecting pipe is located inside the axle; The end cap is located on the outside of the axle and is fixedly covered on the outer end of the wheel hub. The outer end of the end cap has a fixing hole that penetrates the end cap. The pipe connector is inserted into the fixing hole and its inner end is threaded with a locking nut located between the end cap and the connecting pipe. The pipe connector is rotatably connected to the connecting pipe and has an air hole. The air hole penetrates the pipe connector and communicates with the connecting pipe. The outer end of the pipe connector is also fitted with an outer flexible washer located outside the end cap and abuts against the end cap. The adapter is located outside the outer flexible gasket and is threadedly connected to the pipe joint. The adapter abuts against the outer flexible gasket and communicates with the air hole.

2. The axle wheel end air-inflating structure as described in claim 1, characterized in that, The pipe fitting has an outer gasket fitted between the inner end face of the adapter and the outer end face of the outer flexible gasket, and the inner and outer ends of the outer gasket abut against the outer end face of the outer flexible gasket and the inner end face of the adapter, respectively.

3. The axle wheel end air-inflating structure as described in claim 1, characterized in that, The outer peripheral wall of the pipe joint protrudes outward to form an annular stepped portion. The stepped portion mates with the fixing hole and its outer end is located outside the end cap. The outer flexible washer is sleeved on the outer end of the stepped portion and abuts against the outer end face of the end cap. The adapter is located outside the stepped portion and is threadedly connected to the outer peripheral wall of the pipe joint.

4. The axle wheel end air-inflating structure as described in claim 1, characterized in that, The end cap has an outer inner wall corresponding to the outer end face of the end cap. The pipe joint is fitted with an inner flexible washer between the outer end face of the locking nut and the outer inner wall. The inner end and outer end of the inner flexible washer abut against the outer end face of the locking nut and the outer inner wall, respectively.

5. The axle wheel end air-filling structure as described in claim 4, characterized in that, The pipe fitting has an inner washer fitted between the inner end face of the inner flexible washer and the outer end face of the locking nut. The inner end and outer end of the inner washer abut against the outer end face of the locking nut and the inner end face of the inner flexible washer, respectively.

6. The axle wheel end air-inflating structure as described in claim 5, characterized in that, The outer peripheral wall of the pipe joint protrudes outward to form an annular stepped portion. The stepped portion mates with the fixing hole and its inner end is located inside the end cap. The inner flexible washer is sleeved on the inner end of the stepped portion, and the inner gasket is located on the inner side of the stepped portion.

7. The axle wheel end air-filling structure as described in claim 1, characterized in that, The vent is provided with a conduit that communicates with it. The conduit passes through the locking nut and extends into the connecting pipe. The conduit and the connecting pipe are fitted with a clearance and are connected.

8. The axle wheel end air-filling structure as described in claim 1, characterized in that, A shaft cover is tightly fitted to the inner circumferential wall of the outer end of the inner cavity of the axle. The outer end face of the shaft cover has a mounting hole that penetrates the shaft cover from the inside and outside. The inner end of the connecting pipe is engaged with the mounting hole.

9. An axle, characterized in that, Includes the axle wheel end inflatable structure as described in any one of claims 1 to 8.

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