CN222329393U - Axle tire inflation structure and axle - Google Patents
Axle tire inflation structure and axle Download PDFInfo
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- CN222329393U CN222329393U CN202421156344.7U CN202421156344U CN222329393U CN 222329393 U CN222329393 U CN 222329393U CN 202421156344 U CN202421156344 U CN 202421156344U CN 222329393 U CN222329393 U CN 222329393U
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- sealing ring
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- pipe
- hub
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Abstract
本实用新型公开了一种车桥的轮胎充气结构及车桥，车桥的轮胎充气结构包括轴头、轮毂、第一管路、第二管路；轮毂通过轴承枢接在轴头上，轮毂的内侧端设置延伸段，延伸段与轴头的外缘面之间形成安装间隙，安装间隙内设置第一密封环、第二密封环，第一密封环和第二密封环密封安装间隙的两端以与安装间隙共同围成一密闭腔室，第二密封环的内缘固定连接在轴头上、外缘与延伸段的内表面密闭配合；第一管路的一端连接车辆的气源、另一端穿过第二密封环与密闭腔室连通；第二管路的一端固定在延伸段上并与密闭腔室连通、另一端连通于安装在轮毂上的轮胎的内腔。本实用新型简化了车桥轮端的结构，降低了车桥轮端的安装难度，使车桥易于维护。
The utility model discloses a tire inflation structure of a vehicle bridge and a vehicle bridge, wherein the tire inflation structure of the vehicle bridge comprises a shaft head, a wheel hub, a first pipeline and a second pipeline; the wheel hub is pivotally connected to the shaft head through a bearing, an extension section is arranged at the inner side end of the wheel hub, an installation gap is formed between the extension section and the outer edge surface of the shaft head, a first sealing ring and a second sealing ring are arranged in the installation gap, the first sealing ring and the second sealing ring seal the two ends of the installation gap to form a closed chamber together with the installation gap, the inner edge of the second sealing ring is fixedly connected to the shaft head, and the outer edge is tightly matched with the inner surface of the extension section; one end of the first pipeline is connected to the air source of the vehicle, and the other end passes through the second sealing ring and is connected to the closed chamber; one end of the second pipeline is fixed on the extension section and is connected to the closed chamber, and the other end is connected to the inner cavity of the tire installed on the wheel hub. The utility model simplifies the structure of the wheel end of the vehicle bridge, reduces the difficulty of installing the wheel end of the vehicle bridge, and makes the vehicle bridge easy to maintain.
Description
Technical Field
The utility model relates to the technical field of vehicle chassis parts, in particular to a tire inflation structure of an axle and the axle.
Background
The axle tires of common commercial vehicles cannot be inflated automatically in the vehicle situation process, and if tire leakage occurs in the vehicle driving process, the tire pressure is low, and even safety accidents occur. In order to overcome the defects, the vehicle axle is provided with automatic inflating structures for improving the running safety of the commercial vehicle, and the inflating structures automatically supplement air into the tires according to pressure values obtained by detecting the internal pressure of the tires in real time, so that the aim of automatic inflation is fulfilled; however, the axle and the vehicle chassis remain fixed, and the tires are mounted on the hub at the end of the axle, which rotates relative to the axle, and the automatic inflation structure must be configured with a more complex rotary sealing structure to input air from the air source on the vehicle into the tires, and the more complex sealing structure results in more complex structure of the wheel end of the axle, and the mounting difficulty is greater, which increases the maintenance difficulty of the wheel end of the axle.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a tire inflation structure of an axle, which has a simple structure, reduces the mounting difficulty of an axle wheel end and ensures that the axle is easy to maintain.
The second purpose of the utility model is to provide an axle.
In order to achieve the first purpose, the utility model adopts the following technical scheme:
The tire inflation structure of the axle comprises a shaft head, a hub, a first pipeline and a second pipeline;
The hub is pivoted on the shaft head through a bearing, the inner side end of the hub is provided with an extension segment protruding inwards from the bearing, an installation gap is formed between the extension segment and the outer edge surface of the shaft head, a first sealing ring positioned on the inner side of the bearing and a second sealing ring positioned on the inner side of the first sealing ring and arranged at intervals with the first sealing ring are arranged in the installation gap, the two ends of the installation gap are sealed by the first sealing ring and the second sealing ring to form a sealed cavity together with the installation gap, the inner edge of the second sealing ring is fixedly connected on the shaft head, and the outer edge of the second sealing ring is in sealed fit with the inner surface of the extension segment;
One end of the first pipeline is connected with a gas source of the vehicle, the other end of the first pipeline penetrates through the second sealing ring to be communicated with the closed cavity, one end of the second pipeline is fixed on the extension section and is communicated with the closed cavity, and the other end of the second pipeline is communicated with an inner cavity of a tire arranged on the hub.
The first sealing ring is an oil seal which is arranged between the extension section and the shaft head and is used for isolating the airtight cavity and the bearing.
The hub is provided with a joint protruding outwards from the outer edge of the extension section, the inner side end of the joint is communicated with the closed cavity, one end of the second pipeline penetrates into the joint from the outer side end of the joint so that the one end of the second pipeline is communicated with the closed cavity, and the second pipeline is provided with a sealing flange which is tightly pressed on the outer end face of the joint.
The periphery of the hub is provided with a connecting flange, the connecting flange is provided with a through hole for a second pipeline to pass through, a connecting piece is fixed outside the second pipeline, and the connecting piece is embedded in the through hole and is matched with the inner wall of the through hole in a clamping way.
The other end of the second pipeline is provided with a tee joint part, one of the interfaces of the tee joint part is communicated with the other end of the second pipeline, and the other two interfaces of the tee joint part are respectively communicated with the inner cavities of two tires arranged on the hub.
The second sealing ring is provided with a mounting hole extending from one end face to the other end face, the other end of the second pipeline is connected in the mounting hole in a penetrating way so as to communicate the other end of the first pipeline with the airtight cavity, and the second pipeline is provided with a sealing boss pressed on the second sealing ring.
In order to achieve the second purpose, the utility model adopts the following technical scheme:
The axle comprises the tire inflation structure of the axle.
The utility model has the beneficial effects that:
According to the utility model, the extending section protruding out of the bearing is arranged on the inner side of the hub, so that a mounting gap is formed between the extending section and the shaft head, a first sealing ring and a second sealing ring are mounted in the mounting gap, the second sealing ring is fixedly connected with the shaft head, a first pipeline is fixedly arranged on the second sealing ring, a second pipeline is fixedly arranged on the extending section, the first pipeline which relatively rotates is communicated with the second pipeline through the airtight cavity, and then gas can enter the tire through the first pipeline, the airtight cavity and the second pipeline to inflate the tire.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description:
As shown in fig. 1 and 2, the tire inflation structure of the axle of the present utility model comprises a spindle head 10, a hub 20, a first pipeline 30 and a second pipeline 40, wherein the spindle head 10 is located at the end of the axle, the hub 20 is pivoted on the spindle head 10 through a bearing 22 so that the hub 20 can rotate relative to the spindle head 10, the inner side end of the hub 20 is provided with an extension segment 21 protruding inwards from the bearing 22, a mounting gap is formed between the part of the extension segment 21 located at the inner side of the bearing 22 and the outer edge surface of the spindle head 10, a first sealing ring 50 and a second sealing ring 60 are arranged in the mounting gap, the first sealing ring 50 is located at the inner side of the bearing 22, the second sealing ring 60 is located between the inner side end of the extension segment 21 and the spindle head 10, the second sealing ring 60 and the first sealing ring 50 are staggered a certain distance along the axial direction of the spindle head 10, namely, the second sealing ring 60 and the sealing ring 50 are arranged in the mounting gap at intervals, so that the first sealing ring 50 and the second sealing ring 60 are respectively located at two ends of the mounting gap, thereby a sealing cavity B is formed jointly with the mounting gap, the inner edge of the second sealing ring 60 is fixedly connected to the spindle head 10, the inner edge of the second sealing ring 60 is fixedly connected to the outer edge of the spindle head 10, the second sealing ring 60 is fixedly connected to the inner edge of the spindle head 10 and the sealing ring 60, and the other end of the sealing ring 60 is in the sealing cavity 20 is in a sealing cavity 20 and fixedly connected to the sealing cavity 20, and the sealing cavity is in communication with the sealing cavity 20, and the sealing cavity is in communication with the sealing cavity 20, and the sealing cavity is connected to the sealing cavity and the sealing cavity 20.
According to the utility model, the extending section protruding out of the bearing is arranged on the inner side of the hub, so that a mounting gap is formed between the extending section and the shaft head, a first sealing ring and a second sealing ring are mounted in the mounting gap, the second sealing ring is fixedly connected with the shaft head, a first pipeline is fixedly arranged on the second sealing ring, a second pipeline is fixedly arranged on the extending section, the first pipeline which relatively rotates is communicated with the second pipeline through the airtight cavity, and then gas can enter the tire through the first pipeline, the airtight cavity and the second pipeline to inflate the tire.
In the preferred embodiment, the first seal ring 50 is an oil seal installed between the extension 21 and the stub shaft 10, isolating the sealed chamber B from the bearing 22 with the oil seal, preventing the gas in the sealed chamber B from entering the bearing 22, and simultaneously preventing the lubricant in the bearing 22 from entering the sealed chamber B.
The hub 20 is provided with a joint 23 protruding outwards from the outer edge of the extension section 21, the inner side end of the joint 23 is communicated with the closed cavity B, one end of the second pipeline 40 penetrates into the joint 23 from the outer side end of the joint 23, one end of the second pipeline 40 is communicated with the closed cavity B, the second pipeline 40 is provided with a sealing flange 41, the sealing flange 41 is pressed on the outer end face of the joint 23, the joint of the second pipeline 40 and the joint 23 is ensured to have better sealing performance through the sealing flange 41, and air leakage at the joint of the joint 23 and the second pipeline 40 is prevented. In order to prevent the second pipeline 40 from loosening, the connecting flange 24 is arranged at the periphery of the hub 20, a through hole for the second pipeline 40 to pass through is arranged on the connecting flange 24, a connecting piece 42 fixed with the second pipeline 40 is sleeved on the second pipeline 40, the connecting piece 42 is connected in the through hole in a penetrating way, and the connecting piece 42 is matched with the inner wall of the through hole in a clamping way, so that the second pipeline 40 is fixedly connected to the hub 20.
The other end of the second pipeline 40 is provided with a three-way piece 41, one interface of the three-way piece 41 is communicated with the second pipeline 40, and the other two interfaces of the three-way piece 41 are respectively communicated with the inner cavities of two tires arranged on the hub 20, so that the tire inflation structure can be suitable for vehicles with two tires arranged at the wheel end.
In another preferred embodiment, the second sealing ring 60 is provided with a mounting hole 61, the mounting hole 61 extends from one end face to the other end face of the second sealing ring 60, and the other end of the first pipeline 30 is connected in the mounting hole 61 in a penetrating manner, so that the first pipeline 30 is communicated with the closed chamber B, the first pipeline 30 is provided with a sealing boss 31, and the sealing boss 31 is pressed on the second sealing ring 60, so that the matching position of the first pipeline 30 and the second sealing ring 60 has better tightness to prevent air leakage.
Although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit and scope of the embodiments of the present utility model.
Claims (7)
1. The tire inflation structure of the axle is characterized by comprising a shaft head, a hub, a first pipeline and a second pipeline;
The hub is pivoted on the shaft head through a bearing, the inner side end of the hub is provided with an extension segment protruding inwards from the bearing, an installation gap is formed between the extension segment and the outer edge surface of the shaft head, a first sealing ring positioned on the inner side of the bearing and a second sealing ring positioned on the inner side of the first sealing ring and arranged at intervals with the first sealing ring are arranged in the installation gap, the two ends of the installation gap are sealed by the first sealing ring and the second sealing ring to form a sealed cavity together with the installation gap, the inner edge of the second sealing ring is fixedly connected on the shaft head, and the outer edge of the second sealing ring is in sealed fit with the inner surface of the extension segment;
One end of the first pipeline is connected with a gas source of the vehicle, the other end of the first pipeline penetrates through the second sealing ring to be communicated with the closed cavity, one end of the second pipeline is fixed on the extension section and is communicated with the closed cavity, and the other end of the second pipeline is communicated with an inner cavity of a tire arranged on the hub.
2. The tire inflation structure of an axle of claim 1, wherein the first seal ring is an oil seal mounted between the extension and the stub shaft for isolating the enclosed chamber from the bearing.
3. The tire inflation structure of the axle as claimed in claim 1, wherein the hub is provided with a joint protruding outward from an outer edge of the extension section, an inner end of the joint is communicated with the airtight chamber, one end of the second pipe is penetrated into the joint from an outer end of the joint to communicate the one end of the second pipe with the airtight chamber, and the second pipe is provided with a sealing flange which is sealed and pressed on an outer end surface of the joint.
4. The tire inflation structure of the axle of claim 3, wherein the hub is provided at a periphery thereof with a connection flange provided with a through hole for the second pipe to pass therethrough, and a connection member is fixed to an outside of the second pipe, and is inserted into the through hole and engaged with an inner wall of the through hole.
5. The tire inflation structure of the axle as claimed in claim 1, wherein the other end of the second pipe is provided with a three-way member, one of the ports of the three-way member is communicated with the other end of the second pipe, and the other two ports of the three-way member are respectively communicated with the inner cavities of the two tires mounted on the hub.
6. The tire inflation structure of an axle as claimed in claim 1, wherein the second seal ring is provided with a mounting hole extending from one end face to the other end face thereof, the other end of the second pipe is penetrated into the mounting hole to communicate the other end of the first pipe with the airtight chamber, and the second pipe is provided with a seal boss press-fitted on the second seal ring.
7. Axle, characterized in that it comprises a tire inflation structure of an axle according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421156344.7U CN222329393U (en) | 2024-05-25 | 2024-05-25 | Axle tire inflation structure and axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421156344.7U CN222329393U (en) | 2024-05-25 | 2024-05-25 | Axle tire inflation structure and axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222329393U true CN222329393U (en) | 2025-01-10 |
Family
ID=94137519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421156344.7U Active CN222329393U (en) | 2024-05-25 | 2024-05-25 | Axle tire inflation structure and axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222329393U (en) |
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2024
- 2024-05-25 CN CN202421156344.7U patent/CN222329393U/en active Active
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