CN-121973570-A - Front wheel hub lid of non-contact transmission signal

CN121973570ACN 121973570 ACN121973570 ACN 121973570ACN-121973570-A

Abstract

The invention relates to a front wheel hub cover capable of transmitting tire pressure and energy signals in a non-contact mode, and belongs to the field of tire pressure monitoring of a machine wheel braking system. The front wheel hub cover comprises a cover cylinder, a sleeve, a capacitor plate assembly, a coil, a bracket assembly, a frameless coil and a connecting sheet assembly. The front wheel hub cover is integrally arranged outside the outer half hub bearing chamber end face of the front wheel of the aircraft. Through non-contact coil coupling technology, the front wheel hub lid receives the energy signal that the in-axle adapter provided, supplies power for the tire pressure sensor, later receives the tire pressure signal that the tire pressure sensor transmitted to the in-axle adapter is transmitted to it, has realized contactless monitoring tire pressure. The invention provides an effective solution for improving the stability and accuracy of the signal transmission of the front tire pressure of the aircraft, and solves the problems of easy abrasion and low reliability of the contact type tire pressure monitoring system in the prior art.

Inventors

ZHAO JIE
LI GUOSHENG
ZHENG BOHAO
WANG YAN
MA XINGANG
GUO ZHIJIE

Assignees

西安航空制动科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260318

Claims (10)

1. A front wheel hub cover for non-contact transmission of tire pressure and energy signals, comprising: The cover cylinder is a rotary shell and comprises a side plate and a shell wall arranged on the periphery of the side plate, the side plate and the shell wall enclose a shell cavity, a first through hole is formed in the center of the side plate, a hollow cylinder extending towards the shell cavity is arranged on the inner side of the side plate, and the hollow cylinder and the first through hole are coaxial and have equal inner diameters; The sleeve is a rotary cylinder body and comprises a cylinder bottom plate and a cylinder column arranged at the center position of one side of the cylinder bottom plate, the cylinder column is arranged in the hollow cylinder in a penetrating manner, the inner side surface of the cylinder bottom plate is in contact with the outer side surface of the side plate and is fixedly connected with the outer side surface of the side plate, the inner side surface of the cylinder bottom plate is provided with a first annular groove, and the outer diameter wall of the cylinder column is provided with a second annular groove; the capacitor plate assembly is embedded and installed in the first annular groove and is used for signal transmission; The coil is wound in the second annular groove, two ends of the coil are electrically connected with the capacitor plate assembly, and the coil is used for electromagnetic coupling with an in-shaft adapter arranged on the nose landing gear shaft; The bracket component is provided with a second through hole for accommodating the tire pressure sensor; the frameless coil is arranged in the bracket assembly and is used for being electromagnetically coupled with the tire pressure sensor; One end of the connecting sheet assembly is electrically connected with the capacitor plate assembly, and the other end of the connecting sheet assembly is electrically connected with the frameless coil; The outer end of the shell wall is fixedly connected with the front wheel, the hollow cylinder penetrates into an in-shaft adapter on the front landing gear shaft, the bracket component is fixed on a front wheel rim boss for installing the tire pressure sensor, the tire pressure sensor is located in the second through hole, the tire pressure sensor is powered by an energy signal provided by the in-shaft adapter through a coil, and the tire pressure signal of the tire pressure sensor is received through a frameless coil and transmitted to the in-shaft adapter.
2. The front wheel hub cover for non-contact tire pressure and energy signal transmission according to claim 1, wherein the capacitor plate assembly comprises a capacitor plate printed board and a capacitor, the capacitor is welded on the capacitor plate printed board, the capacitor plate printed board is provided with two groups of plug-in holes, one group of plug-in holes is used for being electrically connected with the coil, the other group of plug-in holes is used for being welded with a printed board jack assembly, and the printed board jack assembly is used for being electrically connected with the connecting sheet assembly.
3. The front wheel hub cover for transmitting tire pressure and energy signals in a non-contact mode according to claim 1, wherein the support assembly comprises an upper support and a lower support which are in butt joint and fixed, second through holes are formed in the upper support and the lower support, the two fixed second through holes are coaxial, an inner concave portion is formed in one side of the upper support, facing the lower support, of the upper support, the second through holes of the upper support are covered by the inner concave portion, a protrusion is formed on the outer edge of the inner concave portion and is in surface contact with the lower support, a containing cavity is formed between the inner concave portion and the lower support and is used for penetrating one end of the connecting piece assembly, a third annular groove is formed in the inner concave portion, is coaxial with the second through holes and is located on the periphery of the second through holes of the upper support, and a frameless coil is installed in the third annular groove.
4. The front wheel hub cover of claim 3, wherein the concave portion is symmetrically provided with two slots near the third annular groove, the slots are communicated with the third annular groove, the slots are used for installing welding jack assemblies, the welding jack assemblies are electrically connected with the frameless coils in the third annular groove through soldering, and the welding jack assemblies are used for electrically connecting with the connecting sheet assemblies.
5. The front wheel hub cover for transmitting tire pressure and energy signals in a noncontact manner according to claim 4, wherein the connecting piece assembly comprises two connecting pieces which are bilaterally symmetrical, one end of each connecting piece is fixedly connected with the inner wall of the side plate of the cover cylinder, the end is welded with a first contact pin, the first contact pin is inserted into the printed board jack assembly on the capacitor board assembly after passing through the through hole correspondingly arranged on the side plate, the other end of each connecting piece is fixedly connected with the bracket assembly, the end is welded with a second contact pin, and the second contact pin is inserted into the welding jack assembly at the slot hole.
6. The front wheel hub cover as set forth in claim 3, wherein the upper bracket, the connecting piece and the lower bracket are closely attached and fixed by rivet.
7. The front wheel hub cover for non-contact tire pressure and energy signal transmission according to claim 1, wherein the number of turns of the coil is 22+ -1, the resistance is 0.4+ -0.1 Ω at 20 ℃, the inductance is 15+ -0.2 μh, the two-layer winding of the frameless coil has a single layer with a number of turns of 12+ -1, the resistance is 1+ -0.2 Ω at 20 ℃, and the inductance is 24+ -0.5 μh.
8. The front wheel hub cover for non-contact tire pressure and energy signal transmission according to claim 1, wherein the edge of the shell wall far away from one end of the side plate is provided with 4 lugs, the 4 lugs are symmetrical in pairs, each lug is provided with a connecting hole for connecting with a front wheel, and the edge of the shell wall is provided with an inner groove for penetrating through the connecting sheet assembly.
9. The front wheel hub cover for non-contact tire pressure and energy signal transmission of claim 8, further comprising a rubber spacer pad on the connecting piece assembly at the inner recess of the rim of the shell wall, the rubber spacer pad sealing the gap between the inner recess of the cover and the desired mounting surface of the cover.
10. The front wheel hub cover for non-contact tire pressure and energy signal transmission according to claim 1, wherein a wire passing groove is formed in the outer wall of the cylinder, the wire passing groove is communicated with the first annular groove and the second annular groove, and the wire passing groove is used for leading the end portion of the coil to the capacitor plate assembly.

Description

Front wheel hub lid of non-contact transmission signal Technical Field The invention relates to the field of tire pressure monitoring of a wheel brake system, in particular to a front wheel hub cover capable of transmitting tire pressure and energy signals in a non-contact mode. Background The aircraft tire bears huge impact load, high-speed friction and severe temperature change in the taking-off and landing process of the aircraft, the tire pressure abnormality can cause the problems of tire burst, braking failure and the like, and the safety of the aircraft in the taking-off and landing stage is threatened, so that the aircraft tire pressure monitoring system is one of main factors for guaranteeing the flight safety of the aircraft. Therefore, the tire pressure is monitored in real time in the flight process of the aircraft, and the tire pressure information is provided with great significance. At present, the tire pressure monitoring system adopts a contact type design, but faults such as contact wear and poor contact are easy to occur under high-speed rotation and strong vibration of the aircraft wheel, and fragments generated by wear can pollute the bearing, so that the aircraft maintenance frequency is high and the reliability is lower. Secondly, aircraft airborne equipment is strict to weight requirement, needs to be under the prerequisite of guaranteeing equipment intensity and function, through lightweight design weight as far as possible, promotes aircraft performance. Therefore, there is a need to develop a front tire pressure monitoring device capable of transmitting tire pressure and energy signals without physical contact, which satisfies the requirements of high reliability and light weight, so as to solve the above-mentioned problems. Disclosure of Invention The technical problems to be solved are as follows: In order to avoid the defects of the prior art, the invention provides the front wheel hub cover for transmitting tire pressure and energy signals in a non-contact manner, and the tire pressure signals are transmitted by utilizing a non-contact coil coupling technology through the structural design of the front wheel hub cover, so that the non-contact tire pressure signal monitoring is realized, and the problems of easiness in abrasion and low reliability of a contact tire pressure monitoring system in the prior art are solved. The technical scheme of the invention is that the front wheel hub cover for transmitting tire pressure and energy signals in a non-contact manner comprises: The cover cylinder is a rotary shell and comprises a side plate and a shell wall arranged on the periphery of the side plate, the side plate and the shell wall enclose a shell cavity, a first through hole is formed in the center of the side plate, a hollow cylinder extending towards the shell cavity is arranged on the inner side of the side plate, and the hollow cylinder and the first through hole are coaxial and have equal inner diameters; The sleeve is a rotary cylinder body and comprises a cylinder bottom plate and a cylinder column arranged at the center position of one side of the cylinder bottom plate, the cylinder column is arranged in the hollow cylinder in a penetrating manner, the inner side surface of the cylinder bottom plate is in contact with the outer side surface of the side plate and is fixedly connected with the outer side surface of the side plate, the inner side surface of the cylinder bottom plate is provided with a first annular groove, and the outer diameter wall of the cylinder column is provided with a second annular groove; the capacitor plate assembly is embedded and installed in the first annular groove and is used for signal transmission; The coil is wound in the second annular groove, two ends of the coil are electrically connected with the capacitor plate assembly, and the coil is used for electromagnetic coupling with an in-shaft adapter arranged on the nose landing gear shaft; The bracket component is provided with a second through hole for accommodating the tire pressure sensor; the frameless coil is arranged in the bracket assembly and is used for being electromagnetically coupled with the tire pressure sensor; One end of the connecting sheet assembly is electrically connected with the capacitor plate assembly, and the other end of the connecting sheet assembly is electrically connected with the frameless coil; Wherein, shell wall outer end and front wheel fixed connection, hollow section of thick bamboo penetrate in the epaxial axle inner adapter of nose landing gear, and the support subassembly is fixed in the front wheel rim boss of installation tyre pressure sensor, and the tyre pressure sensor is located second through-hole 53, and the energy signal that the epaxial inner adapter provided is received through coil 4 is for the tyre pressure sensor power supply, receives the tyre pressure signal of tyre pressure sensor and transmits for the epaxial inner adapter through