CN-122008744-A - Structure and method for additionally mounting tire inflation system on trailer axle

Abstract

The utility model provides a trailer axle installs tire inflation system's structure and method additional, including the axle main part, the axle main part includes the bridge pipe and installs the wheel hub at bridge pipe both ends, be provided with lubricated wheel hub bearing between wheel hub and the bridge pipe, make wheel hub can do free rotation relatively the bridge pipe, wheel hub's outside end is provided with lubricated subassembly, the inside liquid lubricating oil that fills of lubricated subassembly, still install the subassembly that aerifys on the subassembly, the subassembly communicates with the tire valve core, be connected with the air supply after the subassembly that aerifys on each wheel hub connects in parallel, realize the real-time air filling to the tire, avoid the potential safety hazard because of the tire lacks the gas, simultaneously through reasonable sealed and exhaust structure, guarantee that bearing lubrication is reliable, reduce high temperature gas to sealed and lubrication system's influence, thereby improve vehicle driving security and tire life.

Inventors

• QIAN LIHU
• FENG JINGYOU
• FENG CHANGXIN

Assignees

• 山东省梁山神力汽车配件有限公司

Dates

Publication Date

20260512

Application Date

20260228

Claims (7)

1. 1. The utility model provides a trailer axle installs tire inflation system's structure additional, includes the axle main part, the axle main part includes the bridge pipe and installs in the wheel hub at bridge pipe both ends, be provided with lubricated wheel hub bearing between wheel hub and the bridge pipe, make wheel hub can do free rotation relatively the bridge pipe, its characterized in that, wheel hub's outside end is provided with lubrication assembly, lubrication assembly inside is filled with liquid lubricating oil, still install inflation assembly on the lubrication assembly, inflation assembly and tire valve core intercommunication, each inflation assembly on the wheel hub is connected with the air supply after parallelly connected.
2. 2. The structure of claim 1, wherein the lubrication assembly comprises a hub axle cover and a window lens assembly; The hub shaft head cover is provided with a plurality of hub fixing screw openings, hub cover fixing screws are arranged in the hub fixing screw openings in a penetrating manner, the hub shaft head cover is mounted at the outer side end of the hub through the hub cover fixing screws, and a hub sealing gasket for sealing is further arranged between the hub shaft head cover and the hub; The window lens assembly comprises a pressing plate, a lens inner hole sealing European-type ring, a window transparent lens and a lens outer ring sealing rubber flat gasket, wherein an annular sealing notch is formed in the inner side of the pressing plate, the lens inner hole sealing European-type ring is arranged in the sealing notch of the pressing plate, the window transparent lens and the lens outer ring sealing rubber flat gasket are sequentially arranged at the inner side end of the pressing plate, a pressing plate fixing screw hole is formed in the pressing plate, and a pressing plate fixing screw penetrates through the pressing plate fixing screw hole and is used for arranging the window lens assembly at the outer side end of a hub shaft cover.
3. 3. The structure of the trailer axle tire inflation system of claim 2, wherein the cylindrical surface of the hub axle cover is provided with a fuel filling and discharging blocking wire.
4. 4. The structure of the trailer axle tire inflation system of claim 2, wherein the window transparent lens is of an annular structure, a lens through hole is formed in the middle of the window transparent lens, the size of the lens through hole is matched with the size of the sealing European ring of the inner hole of the lens, the pressing plate is of an annular structure, a pressing plate through hole is formed in the middle of the pressing plate through hole, and the size of the pressing plate through hole is the same as that of the lens through hole.
5. 5. The structure of the trailer axle tire inflation system of claim 4, wherein the inflation assembly comprises a rotary joint and a bridge core tube, the bridge core tube is arranged inside the bridge tube in a penetrating way, one end of the bridge core tube is provided with a connecting gas head, the connecting gas head is arranged on the wall of the bridge tube in a penetrating way, and the other end of the bridge core tube extends to the wheel hub and is provided with an extension tube gas nozzle quick joint; The inner side end of the rotary joint is provided with a rotary joint air nozzle quick connector which is connected with the extension pipe air nozzle quick connector; the rotary joint fixing screw threads meshed with each other are respectively arranged on the locking nut, the inner vertical surface and the outer vertical surface of the rotary joint, the inner side surface of the pressing plate through hole is provided with pressing plate screw threads meshed with the rotary joint fixing screw threads in the opposite direction, the rotary joint is arranged in the through hole of the pressing plate and is connected with the bridge core pipe, the locking nut is screwed to enable the locking nut to be pressed on the pressing plate to achieve the installation of the rotary joint, and a nut sealing European-type ring is further arranged between the pressing plate and the locking nut.
6. 6. The structure of claim 5, wherein the inner end of the rotary joint is provided with a high-pressure oil gas exhaust port, the outer end of the rotary joint is provided with a rotary joint one-way exhaust port, and the high-pressure oil gas exhaust port is communicated with the rotary joint one-way exhaust port.
7. 7. A method of using the trailer axle tire inflation system configuration of any one of claims 1-6, comprising the steps of: Step 1, installing a nut sealing European ring and a locking nut on a rotary joint, connecting the rotary joint with a pressing plate through the engagement of a fixed pressing plate thread and a rotary joint fixed thread, and then screwing the locking nut to adjust the rotary joint to a proper position; step 2, a sealing European ring for sealing an inner hole of a lens is arranged in a sealing groove opening of a pressing plate, a transparent window lens and a sealing rubber flat gasket for sealing an outer ring of the lens are sequentially arranged, a window lens assembly is formed by combination, a pressing plate fixing screw penetrates through a pressing plate fixing screw opening, and the window lens assembly is fixed on a hub shaft head cover; step 3, fixing the hub shaft cover with the hub through a hub cover fixing screw, a hub fixing screw port and a hub sealing gasket, so as to realize the sealing of the hub bearing cavity; Step 4, penetrating the bridge core pipe into an inner hole of the bridge pipe, connecting the bridge core pipe with a quick connector of a gas nozzle of a rotary joint through a quick connector of a gas nozzle of an extension pipe to form a closed gas path, connecting the gas nozzle through a hose connection to realize the parallel connection of a plurality of inflatable components, and connecting a high-pressure gas system of a trailer; And 5, filling lubricating oil into the hub bearing cavity through the oiling and oil discharging plugging wire to enable the lubricating oil level to reach the lubricating oil standard level, exhausting the high-temperature gas into the atmosphere through the high-pressure oil gas exhaust port and the rotary joint unidirectional exhaust port in sequence when the bearing works to generate high-temperature gas, and conveying the gas to the tire through a closed gas path when the tire is required to be inflated.

Description

Structure and method for additionally mounting tire inflation system on trailer axle Technical Field The invention relates to the technical field of special vehicle equipment, in particular to a structure and a method for a trailer axle additionally provided with a tire inflation system. Background In the use process of a special vehicle, the axle belt tire inflation system is critical to the stable running safety and performance of the vehicle. At present, most of the existing axles do not need tire inflation systems, so that a plurality of defects are brought to the tires on the axles, if the tires are inflated, most of the equipment is inflated by an external air source, the use is inconvenient, the inflation cannot effectively control time and place, the tire pressure is possibly too low, and the service life of the tires and the running stability of the vehicle are affected. Disclosure of Invention The invention has the advantages that the structure and the method for additionally installing the tire inflation system on the trailer axle are provided, the tire automatic inflation system is additionally arranged on the axle hub of the liquid oil lubrication bearing, the real-time air supplementing of the tire is realized, the potential safety hazard caused by the air shortage of the tire is avoided, meanwhile, the bearing lubrication is ensured to be reliable through a reasonable sealing and exhausting structure, the influence of high-temperature air on the sealing and lubrication system is reduced, the running safety of the vehicle and the service life of the tire are improved, the real-time and automatic air supplementing of the tire is realized, the running potential safety hazard caused by the air shortage of the tire is avoided, the service life of the tire is prolonged, the rotary joint and the unidirectional exhaust port are utilized, the high-temperature gas generated during the working of the bearing is timely discharged to the atmosphere, the internal pressure of the cavity is reduced, the adverse effect of the high-temperature gas on the sealing element and the lubricating oil is reduced, the lubrication reliability and the system service life are improved, the sealing performance of the hub bearing cavity is effectively ensured through the multiple sealing structures such as the nut sealing European ring, the lens inner hole sealing European ring, the lens outer ring sealing rubber flat gasket and the hub sealing gasket, the lubricating oil leakage and the external dust and moisture entering are prevented, the working stability and the service life of the bearing are improved, the arrangement of the window transparent lens is convenient for observing the lubricating oil surface and the internal working state, the abnormality is conveniently found in time, the maintenance is carried out, and the maintainability of equipment is improved. In order to achieve at least one advantage of the invention, the invention provides a structure for additionally installing a tire inflation system on a trailer axle, which comprises an axle main body, wherein the axle main body comprises an axle tube and hubs arranged at two ends of the axle tube, a lubrication hub bearing is arranged between each hub and each axle tube, the hubs can freely rotate relative to the axle tube, a lubrication assembly is arranged at the outer side end of each hub, liquid lubricating oil is filled in each lubrication assembly, an inflation assembly is further arranged on each lubrication assembly, the inflation assemblies are communicated with tire valve cores, and air sources are connected in parallel to the inflation assemblies on the hubs. According to one embodiment of the invention, the lubrication assembly includes a hub axle cover and a window lens assembly; the hub shaft head cover is provided with a plurality of hub fixing screw openings, hub cover fixing screws are arranged in the hub fixing screw openings in a penetrating manner, the hub shaft head cover is arranged at the outer side end of the hub through the hub cover fixing screws, and a hub sealing gasket for sealing is arranged between the hub shaft head cover and the hub; The window lens assembly comprises a pressing plate, a lens inner hole sealing European ring, a window transparent lens and a lens outer ring sealing rubber flat gasket, wherein an annular sealing notch is formed in the inner side of the pressing plate, the lens inner hole sealing European ring is arranged in the sealing notch of the pressing plate, the window transparent lens and the lens outer ring sealing rubber flat gasket are sequentially arranged at the inner side end of the pressing plate, a pressing plate fixing screw hole is formed in the pressing plate, and a pressing plate fixing screw penetrates through the pressing plate fixing screw hole and is arranged at the outer side end of a hub shaft cover. According to one embodiment of the invention, the cylindrical surface of the hub axle hea