Drive axle center inflation and deflation structure

Abstract

The utility model discloses a kind of drive axle central inflation and deflation structure, by axle housing body, axle head, flange plate, wheel hub, oil-gas seal, gas pipe adapter, air inlet pipe, air outlet pipe joint, brake, gas pipe protection plug composition;The axle head is connected axle housing body with air inlet pipe and gas pipe adapter, realizes the inflation and deflation function between axle housing;The brake is connected with flange plate, realizes the function of connecting brake part;The wheel hub is connected with oil-gas seal and air outlet pipe joint, realizes wheel end inflation and deflation function;By the way of air passage through between each component, realize drive axle with inflation and deflation function, can provide inflation and deflation passage for whole vehicle to solve special working condition under cannot give tire inflation and deflation function.

Description

Technical Field

[0001] This utility model relates to the field of drive axle technology, specifically a central inflation / deflation structure for drive axles, which can be adapted to vehicles with wheel-end inflation / deflation functions, solving the problem of difficult inflation for special vehicles. Background Technology

[0002] In the field of modern vehicle engineering, tires, as core components that directly contact the ground, directly affect a vehicle's passability, safety, and economy. Especially for special vehicles such as off-road vehicles, military equipment, and construction machinery, tires need to frequently adapt to complex terrain (such as sand, mud, and rocky roads), load changes (such as heavy-duty transportation and light-duty maneuvering), or emergency conditions (such as rapid transfer and obstacle avoidance). Traditional tire inflation methods can no longer meet these needs. The current drawback of tire inflation and deflation structures is that frequent inflation and deflation put a lot of impact on the sealing lip, which can easily cause gas leakage. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a central inflation / deflation structure for a drive axle that is compatible with drive axles with central inflation / deflation functions in vehicles.

[0004] The technical solution provided by this utility model is: a central air inflation / deflation structure for a drive axle, characterized in that it comprises an axle housing body, an axle head, a flange, a brake, a wheel hub, an oil-gas seal, an air pipe adapter, an air inlet pipe, an air outlet pipe connector, and an air pipe protective plug; the axle housing body is fixedly connected to the flange; the axle head is fixedly fixed to both ends of the axle housing body; the brake is fixedly mounted on the flange; one end of the air pipe adapter is sealed and fixedly connected to the air inlet pipe, and the other end of the air pipe adapter is fixedly connected to the axle head. The system enables air supply to reach the axle head; a hub is fixed to the axle head, and an oil-gas seal is positioned on the hub; the air outlet connector is connected to and fixed to the air passage inside the hub; an air pipe protective plug is provided on the air inlet pipe; the brake, air pipe adapter, air inlet pipe, and air pipe protective plug are fixedly connected; the air inlet pipe carries the air source to the air pipe adapter, the air source enters the axle head air passage through the air pipe adapter, the air source enters the oil-gas seal through the axle head, and the oil-gas seal transmits the air source through the hub air passage to the air outlet connector.

[0005] Furthermore, the bridge housing body and the shaft head are fixed by welding.

[0006] Furthermore, the brake is connected and fixed to the flange by means of bolt thread fastening.

[0007] Furthermore, the intake pipe and piping both have an inner diameter of φ8.

[0008] Furthermore, one end of the air pipe adapter is connected and fixed to the air inlet pipe (8) by a conical horn-shaped sealing method. Thread sealant is provided at the front 1 / 3 of the connection point between the air inlet pipe and the air pipe adapter, and compression sealing is achieved. One end of the air pipe adapter is combined with the O-ring and flat washer and then connected and fixed to the threaded hole on the shaft head.

[0009] Furthermore, the oil-gas seal and the wheel hub are fixed by a snap ring, which restricts the oil-gas seal to the wheel hub; the exhaust pipe connector is fixed to the wheel hub with an internal hexagonal head screw and a spring washer to achieve a rigid connection; a plug is provided in the wheel hub.

[0010] The beneficial effects of this utility model are: 1. The axle head is connected to the intake pipe and air pipe adapter on the axle housing body to realize the air inflation and deflation function between the axle housings. It can meet the tire inflation and deflation pressure of the vehicle under any environmental conditions. By utilizing the existing space and air passage of the drive axle, there is no need to lay out complicated pipelines, which solves the problem of difficult inflation and deflation under special working conditions of the whole vehicle. 2. The intake pipe and channel pipes both use an inner diameter of φ8. Increasing the inner diameter of the pipes reduces the impact of air pressure on the pipes and prevents air leakage. The air pipe adapter and the air pipe are sealed with a conical flared mouth, and the sealing performance is optimized through compression deformation. Thread sealant is added to the front 1 / 3 of the threaded connection point between the intake pipe and the adapter to increase the thread locking effect. The connection between the air pipe adapter and the axle housing shaft head uses a flat washer + O-ring + thread locking adhesive to increase the sealing effect. 2. The brake is connected to the flange to realize the function of connecting the braking part; 3. The wheel hub is connected to the oil-gas seal and the air outlet pipe joint to realize the air inflation and deflation function of the wheel end; 4. By using air passages to connect the various components, the drive axle is equipped with inflation and deflation functions, which can provide inflation and deflation channels for the whole vehicle and solve the problem of not being able to provide tire inflation and deflation functions under special working conditions. 5. Users can adjust tire pressure with one click according to real-time road conditions (sand, mud, rocks, highways, etc.). For example, when driving in the desert, the tire pressure is lowered to increase the contact area and prevent the vehicle from getting stuck, while when driving on the highway, the tire pressure is increased to reduce rolling resistance. This avoids the lag caused by traditional manual adjustment, which can lead to the vehicle getting stuck or the tires being damaged. 6. Adaptable to various drive configurations such as 4×4 and 6×6, meeting the customized needs of different users. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connection between the intake pipe and the axle housing body of this utility model; Figure 3 yes Figure 2A magnified view of part K; Figure 4 yes Figure 2 A magnified view of part J; Figure 5 This is a schematic diagram of the connection between the wheel hub and the air outlet end of this utility model; Figure 6 yes Figure 5 A magnified view from direction A.

[0012] In the diagram, 1. axle housing body, 2. shaft head, 3. flange, 4. brake, 5. hub, 6. oil-gas seal, 7. air pipe adapter, 8. air inlet pipe, 9. air outlet pipe connector, 10. air pipe protective plug, 11. hex socket head cap screw, 12. spring washer, 13. O-ring, 14. flat washer, 15. plug. Detailed Implementation

[0013] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings.

[0014] like Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, a central air inflation / deflation structure for a drive axle comprises an axle housing body 1, an axle head 2, a flange 3, a brake 4, a wheel hub 5, an oil-gas seal 6, an air pipe adapter 7, an air inlet pipe 8, an air outlet pipe connector 9, an air pipe protective plug 10, a hexagon socket head cap screw 11, a spring washer 12, an O-ring 13, a flat washer 14, and a plug 15. The axle housing body 1 and the flange 3 are cast as a single unit. The axle head 2 is welded to both ends of the axle housing body 1. The brake 4 is connected and fixed to the flange 3 using bolt threads. One end of the air pipe adapter 7 is connected and fixed to the air inlet pipe 8 using a tapered thread seal. The front 1 / 3 of the connection point between the air inlet pipe 8 and the air pipe adapter 7 is sealed with thread sealant and compression sealant. The other end of the air pipe adapter 7, combined with the O-ring 13 and the flat washer 14, is connected to the threaded hole on the axle head 2. The connection is fixed to allow air to flow through to the axle head 2; the wheel hub 5 is fixed on the axle head 2; the oil-air seal 6 is fixed to the wheel hub 5 using a snap ring, restricting the oil-air seal 6 to its position in the wheel hub 5; the air outlet connector 9 is connected to the air passage inside the wheel hub 5, and fixed to the wheel hub 5 using an internal hexagonal head screw 11 and a spring washer 12 to achieve a rigid connection, and the plug 15 is fixed in the wheel hub 5; the air intake pipe 8 and the pipeline all use an inner diameter of φ8; an air pipe protection plug 10 is installed on the air intake pipe 8, and the brake 4, air pipe adapter 7, air intake pipe 8, and air pipe protection plug 10 are fixedly connected; thus, the air inlet brings the air source to the air pipe adapter 7 through the air intake pipe 8, the air source enters the air passage of the axle head 2 through the air pipe adapter 7, the air source enters the oil-air seal 6 through the axle head 2, and the oil-air seal 6 transmits the air source through the air passage of the wheel hub 5 to the air outlet connector 9, finally completing the tire inflation function.

[0015] This utility model discloses a central inflation / deflation structure for a drive axle. In the field of modern vehicle engineering, tires are core components that directly contact the ground, and their air pressure directly affects the vehicle's passability, safety, and economy. Adding inflation / deflation functions to drive axle products can meet the needs of vehicles to inflate and deflate tires under any environmental conditions.

[0016] It should be understood that any technical features not described in detail in this specification belong to the prior art. Although the embodiments of this utility model patent have been described, this utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make more forms under the guidance of this utility model without departing from the spirit and scope of protection of this utility model and the claims, and these all fall within the protection scope of this utility model.

Claims

1. A central inflation / deflation structure for a drive axle, characterized in that, It consists of an axle housing body, axle head, flange, brake, hub, oil-gas seal, air pipe adapter, air inlet pipe, air outlet pipe connector, and air pipe protective plug. The axle housing body is fixedly connected to the flange. Axle heads are fixed to both ends of the axle housing body. The brake is fixedly mounted on the flange. One end of the air pipe adapter is sealed and fixedly connected to the air inlet pipe, and the other end of the air pipe adapter is connected and fixedly connected to the axle head, so that the air source can pass through to the axle head. The hub is fixed to the axle head, and the oil-gas seal is positioned on the hub. The air outlet pipe connector is connected to the air passage inside the hub and fixed to the hub. An air pipe protective plug is provided on the air inlet pipe. The brake, air pipe adapter, air inlet pipe, and air pipe protective plug are fixedly connected. The air inlet pipe brings the air source to the air pipe adapter, and the air source enters the axle head air passage through the air pipe adapter. The air source is carried into the oil-gas seal through the axle head, and the oil-gas seal transmits the air source through the hub air passage to the air outlet pipe connector.

2. The central inflation / deflation structure of a drive axle according to claim 1, characterized in that, The bridge housing body and the shaft head are fixed by welding.

3. The central inflation / deflation structure of a drive axle according to claim 1, characterized in that... The brake is connected and fixed to the flange by bolt thread fastening.

4. The central inflation / deflation structure of a drive axle according to claim 1, characterized in that... The intake pipe and pipelines all have an inner diameter of φ8.

5. The central inflation / deflation structure of a drive axle according to claim 1, characterized in that, One end of the air pipe adapter is connected and fixed to the air intake pipe by a conical flared mouth seal. Thread sealant is provided at the front 1 / 3 of the connection point between the air intake pipe and the air pipe adapter to achieve a compression seal. One end of the air pipe adapter, combined with an O-ring and a flat washer, is connected and fixed to the threaded hole on the shaft head.

6. The central inflation / deflation structure of a drive axle according to claim 1, characterized in that, The oil-gas seal is fixed to the wheel hub using a snap ring, which restricts the oil-gas seal to the wheel hub; the air outlet pipe connector is fixed to the wheel hub using an internal hexagonal head screw and a spring washer to achieve a rigid connection; a plug is provided in the wheel hub.

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