CN217227514U

CN217227514U - Military aircraft tire inflation pressure measuring device

Info

Publication number: CN217227514U
Application number: CN202220892441.7U
Authority: CN
Inventors: 徐进辉; 罗民
Original assignee: Chengdu Mintai Hydraulic Technology Co Ltd
Current assignee: Chengdu Mintai Hydraulic Technology Co Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-19
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a military aircraft tire inflation pressure measurement device, include inflation pressure adjusting part and aerify the pressure measurement subassembly, inflation pressure adjusting part includes consecutive pressure reducer, gassing switch, air feed hose and proclaims oneself quick change female joint, it includes the pressure gun to aerify the pressure measurement subassembly, be provided with air inlet, inflation inlet and pressure measurement mouth on the pressure gun, the air inlet leads to with proclaim oneself quick change male joint one end, proclaim oneself quick change female joint and keep away from air inlet one end and proclaim oneself quick change male joint phase-match, the inflation inlet leads to there is the air feed hose, the pressure measurement mouth leads to there is the manometer, it keeps away from inflation inlet one end UNICOM and has the inflation joint to aerify the hose. The utility model has the advantages that: the device is safe to use, simple to operate and high in measurement precision, and integrates pressure measurement, deflation and inflation.

Description

Tyre inflation pressure measuring device for military aircraft

Technical Field

The utility model relates to a military aircraft ground support technical field, concretely relates to military aircraft tire pressure measurement device that inflates.

Background

The airplane tire is used for buffering vibration and impact generated in the process of taking off and landing of the airplane, and whether the tire air pressure is in an allowable range directly influences the safety of the airplane. The daily work of ground maintenance personnel is to detect, supplement or deflate the air pressure of the tires of the airplane.

The existing combined device for inflating and measuring the pressure of the airplane tire is of a cylinder barrel type structure, a handle is hinged on a cylinder barrel, and an inflating joint adopts a spring clamping piece type. The prior device has the following defects: the cylinder barrel type structure is inconvenient to operate, and the cylinder barrel needs to be held by one hand and the handle is pressed by the other hand; the connection of the card type air charging connector is unreliable, particularly, the air pressure of the tire of a large military aircraft is up to more than 2MPa, the air charging connector is easy to loosen to cause safety accidents, and the actual air charging pressure of the tire is inconsistent with the required pressure due to partial air leakage of the tire in the connection and disassembly processes of the card type connector; the common mechanical pressure gauge has low measurement precision and cannot meet the requirement of modern military aircraft on the measurement precision.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a safe in utilization, easy operation, measurement accuracy height, collect pressure measurement, gassing, aerify in the aircraft tire pressure measuring device that inflates of an organic whole.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a pressure measurement device is aerifyd to military aircraft tire, includes inflation pressure adjusting part and aerifys pressure measuring part, inflation pressure adjusting part includes consecutive pressure reducer, gassing switch, air feed hose and proclaims oneself quick change female joint, inflation pressure measuring part includes the air gun, be provided with air inlet, inflation inlet and pressure measurement mouth on the air gun, the air inlet with proclaim oneself quick change male joint one end UNICOM, proclaim oneself quick change female joint and keep away from air inlet one end and proclaim oneself quick change male joint phase-match, the inflation inlet UNICOM has the air feed hose, the pressure measurement mouth UNICOM has the manometer, the air feed hose is kept away from inflation inlet one end UNICOM and is had inflation connector.

The pressure gauge is a rechargeable precision digital pressure gauge, and the measurement unit is MPa and can not be changed.

The pneumatic connector is characterized in that a connecting nut and an ejector rod nut are respectively arranged at two ends of the pneumatic connector, a connector body is arranged between the connecting nut and the ejector rod nut, a steel ball is arranged between the connector body and the connecting nut, a through opening is formed in the middle of the connector body, an ejector rod is arranged on the through opening in a penetrating mode, and the steel ball is also arranged between the ejector rod and the ejector rod nut.

And a radial sealing ring matched with the ejector rod in size is arranged in the through opening. Used for realizing the sealing between the mandril and the joint body.

The inflatable joint is provided with a connecting nut, and one end of the connecting nut is provided with an axial end face sealing ring. For sealing between the fitting and the tire nozzle.

The inflation gun comprises a gun body and a valve core, wherein an air inlet, an inflation inlet and a pressure measuring port are all located on the gun body (802), a hollow cavity is formed in the gun body, the valve core is slidably mounted in the hollow cavity, one end of the valve core is connected with an inflation trigger, the other end of the valve core is connected with a spring, one end, far away from the valve core, of the spring is connected with an deflation assembly, one end, close to an deflation button, of the gun body is provided with a pressure relief port, and the deflation assembly is matched with the pressure relief port in size.

And a sealing ring is arranged on the valve core and is tightly attached to the inner wall of the gun body.

The deflation component comprises a deflation button and a deflation plug, the deflation button penetrates through the middle of the deflation plug and is slidably mounted, a sealing ring is arranged between the deflation plug and the deflation button, and the deflation button is connected with the spring.

And the interfaces of the pressure reducer, the self-sealing quick-change female joint, the self-sealing quick-change male joint and the inflation joint are detachably provided with dustproof caps.

The inflation connector is detachably connected with the inflation hose. Therefore, different types of inflation joints can be replaced, and the inflation joint is matched with inflation nozzle threads of tires of different types.

The utility model has the advantages that:

(1) integrates the functions of inflation, pressure measurement and deflation, and has small volume and easy carrying.

(2) The pistol type air gun is convenient to operate.

(3) The threaded connection type inflation connector is high in safety and air-tight in the connection and detachment processes.

(4) The precision digital pressure gauge has high measurement precision and visual reading.

(5) The measurement unit of the precision digital pressure gauge adopts the international unit MPa and is not changeable, so that accidents of over-high inflation pressure and tire burst or insufficient inflation pressure and the like caused by mistakenly selecting the measurement unit in the conventional digital pressure gauge with various measurement units are avoided.

(5) The inflatable connectors of various specifications can be disassembled and replaced, and are suitable for various machine types.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of an inflator gun;

FIG. 3 is a schematic view of an inflation fitting interface;

in the figure, 1-an inflation pressure adjusting assembly, 2-an inflation pressure measuring assembly, 3-a pressure reducer, 4-a deflation switch, 5-an air supply hose, 6-a self-sealing quick-change female joint, 7-a self-sealing quick-change male joint, 8-an inflation gun, 801-an inflation trigger, 802-a gun body, 803-a valve core, 804-a sealing ring, 805-an inflation inlet, 806-a pressure measuring port, 807-a spring, 808-a pressure relief port, 809-an deflation button, 8010-an air inlet, 8011-an deflation plug, 9-a pressure gauge, 10-an inflation hose, 11-an inflation joint, 1101-a connecting nut, 1102-an axial end face sealing ring, 1103-a steel ball, 1104-a joint body, 1105-an ejector rod, 1106-a radial sealing ring and 1107-an ejector rod nut.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the following description, the terms "left", "right", "upper", "lower", "front", "rear", "inner" and "outer" are relative to each other, and are not listed here.

A tyre inflation and pressure measurement device for military aircraft, referring to figures 1-3, comprises an inflation pressure adjustment assembly 1 and an inflation pressure measurement assembly 2. The inflation pressure adjusting component 1 is formed by sequentially connecting a pressure reducer 3, a deflation switch 4, an air supply hose 5 and a self-sealing quick-change female joint 6. One end of the pressure reducer 1 far away from the air release switch 4 is connected with a nitrogen bottle. The inflation pressure measuring assembly 2 comprises an inflation gun 8 and a self-sealing quick-change male connector 7. The self-sealing quick-change male joint 7 is matched with the self-sealing quick-change female joint 6, and the two are connected. The inflation gun 8 is provided with an inflation port 805, a pressure measurement port 806 and an air inlet 8010. The self-sealing quick-change male connector 7 is connected to the air inlet 8010. The inflation port 805 is connected to an inflation hose 10. The pressure measuring port 806 is connected with a pressure gauge 9. The end of the inflating hose 10 far away from the inflating gun 8 is detachably connected with an inflating joint 11. The charging connector 11 is connected with the valve of the airplane tire in a threaded manner.

The air gun 8 includes a gun body 802 and a valve core 803. A hollow cavity is arranged in the gun body 2. The valve core 803 is slidably mounted within the hollow cavity. One end of the valve core 803 is positioned outside the hollow cavity body, and is connected with an inflating trigger 801. The other end of the valve core 803 is connected with a spring 807. A bleed air assembly is connected to the end of spring 807 remote from spool 803. A gas fill port 805, a pressure tap 806, and a gas inlet 8010 are located on the gun body 802, respectively. The valve core 803 is provided with a sealing ring 804, and the valve core 803 and the hollow cavity are completely sealed by the sealing ring 804. One end of the gun body 2, which is far away from the inflating trigger 801, is provided with a pressure relief opening 808, and the pressure relief opening 808 is matched with the size of the air bleeding component. The deflation assembly includes a deflation button 809 and a deflation plug 8011. A deflation button 809 is slidably mounted through the deflation plug 8011. An air release hole is formed in the air release plug 8011, and a sealing ring 804 is arranged between the air release plug 8011 and the air release button 809.

The inflation trigger 801 is pressed down to enable the valve core 803 to move close to the deflation button 809, and the inflation port 805, the pressure measuring port 806 and the air inlet 8010 are communicated, so that the inflation-pressure measuring function is realized. When the inflation trigger 801 is released, the valve core 803 is reset under the action of the spring 807, and the air inlet 8010 is communicated with the inflation inlet 805 and the pressure measuring inlet 806 to be closed, so that the pressure measuring function is realized. When the inflation trigger 801 is loosened, the deflation button 809 is pressed, the sealing ring 804 loses the sealing function, and the gas is discharged through the gas discharge hole on the deflation plug 8011 to realize the functions of deflation and pressure measurement.

The gas charging connector 11 includes a coupling nut 1101 and a push rod nut 1107. The coupling nut 1101 is screwed to the tire valve of the airplane. A joint body 1104 is arranged between the connecting nut 1101 and the ejector rod nut 1107, and a through opening is arranged on the joint body 1104. A plunger 1105 is slidably mounted on the through opening. A first groove for containing the steel ball 1103 is formed between the ejector rod 1105 and the ejector rod nut 1107, and the steel ball 1103 is installed on the first groove. A second groove for containing the steel ball 1103 is formed between the joint body 1104 and the connecting nut 1101, and the steel ball 1103 is mounted on the second groove. An axial end face sealing ring 1102 is arranged at the connecting nut 1101 and used for realizing the sealing of the inflation connector 11 and an aircraft tire valve. A radial seal ring is disposed between the top body 1105 and the fitting body 1104 for sealing the top body 1105 to the fitting body 1104.

And the ejector rod nut 1107 is rotated clockwise, and the steel ball 1103 drives the ejector rod 1105 to advance so as to eject the valve nozzle thimble. And the ejector rod nut 1107 is rotated anticlockwise, the steel ball 1103 drives the ejector pin 1105 to retreat, and the valve ejector pin resets.

The utility model discloses realize aerifing, pressure measurement, gassing function, the working process as follows:

1. and (3) inflating:

the pressure reducer 3 of the inflation pressure regulating assembly 1 is reliably connected with the nitrogen cylinder.

And opening a nitrogen cylinder switch, and clockwise adjusting the handle of the pressure reducer 3 until the pressure at the outlet of the pressure reducer 3 is the maximum inflation pressure allowed by the aircraft tire.

The nitrogen cylinder switch is closed, and the air release switch 4 is opened to release the pressure of the air supply hose 5.

And butting the quick-change female connector 6 of the inflation pressure regulating assembly 1 with the quick-change male connector 7 of the inflation pressure measuring assembly 2.

The front end connecting nut 1101 of the tire inflation connector 11 is reliably connected with a tire valve, and the rear end ejector rod nut 1107 of the tire inflation connector 11 is rotated clockwise to eject the valve ejector pin.

Pressing the switch key of the pressure gauge 9 to display the normal state.

Closing the air release switch and opening the nitrogen cylinder switch; the tire is inflated by fully depressing the inflation trigger 801 and the inflation is stopped by releasing the inflation trigger 801. During the inflation process, the indicated value of the pressure gauge 9 is observed. When the tire pressure is close to the required pressure, the charging/stopping mode is repeatedly adopted, so that the tire pressure slowly rises.

After the inflation is finished, closing a nitrogen cylinder switch; rotating the ram 1105 counterclockwise retracts the ram.

The deflation switch 4 is opened to release the pressure in the inflation pressure regulating assembly 1 and the inflation pressure measuring assembly 2.

The butt joint of the quick-change female connector 6 and the quick-change male connector 7 is broken, and the inflation pressure regulating assembly 1 and the inflation pressure measuring assembly 2 are disassembled; and putting the components into a containing box.

2. And (3) pressure measurement:

the pneumatic load cell assembly 2 is used alone.

The front end connecting nut 1101 of the pneumatic connector 11 is reliably connected with the tire valve, and the rear end ejector rod nut 1107 of the pneumatic connector 11 is rotated clockwise to eject the valve ejector pin.

The aeration trigger 801 is released; the indicated value of the static several-second pressure gauge 9 is the current pressure of the tire.

3. Air bleeding:

when the tire pressure is less than 1.5 MPa: the inflation pressure measuring component 2 is reliably connected with the tire valve and pushes the valve thimble open; the tire is deflated by lifting the deflation button 809 and the deflation is stopped by pressing the deflation button 809.

When the tire pressure is more than 1.5 MPa: connecting an inflation pressure measuring component 2 with an inflation pressure adjusting component 1, connecting the inflation pressure measuring component 2 with a tire valve and ejecting a valve ejector pin; the deflation switch 4 on the inflation pressure regulating assembly 1 is turned on, the tire is deflated by pressing the inflation trigger 801, and the deflation is stopped by releasing the inflation trigger 801.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A tyre inflation and pressure measurement device for military aircraft is characterized by comprising an inflation pressure regulation component (1) and an inflation pressure measurement component (2), the inflation pressure regulating component (1) comprises a pressure reducer (3), a deflation switch (4), an air supply hose (5) and a self-sealing quick-change female joint (6) which are connected in sequence, the inflation pressure measuring component (2) comprises an inflation gun (8), the inflation gun (8) is provided with an air inlet (8010), an inflation inlet (805) and a pressure measuring inlet (806), the air inlet (8010) is communicated with one end of the self-sealing quick-change male connector (7), one end of the self-sealing quick-change female connector (6) far away from the air inlet (8010) is matched with the self-sealing quick-change male connector (7), the inflation inlet (805) is communicated with an inflation hose (10), the pressure measuring inlet (806) is communicated with a pressure gauge (9), one end of the inflating hose (10) far away from the inflating port (805) is communicated with an inflating joint (11).

2. A military aircraft tire inflation and pressure testing apparatus as defined in claim 1, wherein: the pressure gauge (9) is a rechargeable precision digital pressure gauge, and the measurement unit is MPa and can not be changed.

3. A military aircraft tire inflation pressure measuring apparatus as claimed in claim 1, wherein: the pneumatic connector is characterized in that a connecting nut (1101) and a push rod nut (1107) are respectively arranged at two ends of the pneumatic connector (11), a connector body (1104) is arranged between the connecting nut (1101) and the push rod nut (1107), a steel ball (1103) is arranged between the connector body (1104) and the connecting nut (1101), a through opening is formed in the middle of the connector body (1104), a push rod (1105) is arranged on the through opening in a penetrating mode, and the steel ball (1103) is also arranged between the push rod (1105) and the push rod nut (1107).

4. A military aircraft tire inflation and pressure testing apparatus as defined in claim 3, wherein: and a radial sealing ring (1106) matched with the ejector rod (1105) in size is arranged in the through opening.

5. A military aircraft tire inflation and pressure testing apparatus as defined in claim 3, wherein: and one end of the inflation connector (11) provided with a connecting nut (1101) is provided with an axial end face sealing ring (1102).

6. A military aircraft tire inflation and pressure testing apparatus as defined in claim 1, wherein: the inflation gun (8) comprises a gun body (802) and a valve core (803), wherein an air inlet (8010), an inflation inlet (805) and a pressure measuring port (806) are all located on the gun body (802), a hollow cavity is formed in the gun body (802), the valve core (803) is slidably mounted in the hollow cavity, one end of the valve core (803) is connected with an inflation trigger (801), the other end of the valve core (803) is connected with a spring (807), one end, far away from the valve core (803), of the spring (807) is connected with an deflation assembly, one end, close to a deflation button (809), of the gun body (802) is provided with a pressure relief port (808), and the deflation assembly is matched with the pressure relief port (808) in size.

7. The apparatus of claim 6, wherein said pneumatic pressure gauge is further comprised of: the deflation component comprises an deflation button (809) and an deflation plug (8011), the deflation button (809) penetrates through the middle of the deflation plug (8011) to be installed in a sliding mode, a sealing ring (804) is arranged between the deflation plug (8011) and the deflation button (809), and the deflation button (809) is connected with a spring (807).

8. A military aircraft tire inflation and pressure testing apparatus as defined in claim 7, wherein: and the valve core (803) and the sealing ring (804) are tightly attached to the inner wall of the gun body (802).

9. A military aircraft tire inflation and pressure testing apparatus as defined in claim 1, wherein: the interfaces of the pressure reducer (3), the self-sealing quick-change female joint (6), the self-sealing quick-change male joint (7) and the inflation joint (11) are all detachably provided with dust caps.

10. A military aircraft tire inflation and pressure testing apparatus as claimed in any one of claims 1 to 9, wherein: the inflation connector (11) is detachably connected with the inflation hose (10).