阅读说明：本技术 一种降低汽车轮胎空腔噪声的方法及设备 (Method and equipment for reducing automobile tire cavity noise ) 是由 蒋大勇 李沛然 邱斌 陈景昌 于 2021-05-24 设计创作，主要内容包括：本发明公开了一种降低汽车轮胎空腔噪声的方法,包括以下操作步骤,步骤S1、固定充氦气；步骤S2、泄压；步骤S3、第二次充氦气；步骤S4、第二次泄压；步骤S5、第三次充氦气；步骤S6、第三次泄压；步骤S7、第四次充氦气密封；及降低汽车轮胎空腔噪声的设备。本发明的有益效果是,通过微调移动结构将链条吸附固定,同时通过搬运充气结构与抽气组件将轮胎内的气体进行循环式充气以及抽气,确保轮胎内的轮胎内部空腔的模态频率大幅提升,由于路面轮廓功率谱随着频率的升高而降低。(The invention discloses a method for reducing cavity noise of an automobile tire, which comprises the following operation steps of S1, fixedly filling helium; step S2, pressure relief; step S3, helium is filled for the second time; step S4, releasing pressure for the second time; step S5, filling helium for the third time; step S6, releasing pressure for the third time; step S7, fourth helium-filling and air-sealing; and a device for reducing the cavity noise of the automobile tire. The invention has the advantages that the chain is adsorbed and fixed by the fine adjustment moving structure, and meanwhile, the gas in the tire is circularly inflated and exhausted by the carrying inflating structure and the exhausting assembly, so that the modal frequency of the inner cavity of the tire in the tire is greatly improved, and the power spectrum of the road profile is reduced along with the increase of the frequency.)

1. A method for reducing cavity noise of an automobile tire is characterized by comprising the following operation steps of S1, fixedly filling helium; step S2, pressure relief; step S3, helium is filled for the second time; step S4, releasing pressure for the second time; step S5, filling helium for the third time; step S6, releasing pressure for the third time; step S7, fourth helium-filling and air-sealing;

the step S1: pressurizing the tire with helium to a standard tire pressure of the tire;

the step S2: venting the tire of S1 to atmospheric pressure;

the step S3: pressurizing the tire of S2 with helium to the standard tire pressure of the tire;

the step S4: venting the tire of S3 to atmospheric pressure;

the step S5: pressurizing the tire of S4 with helium to the standard tire pressure of the tire;

the step S6: venting the tire of S5 to atmospheric pressure;

the step S7: and (3) pressurizing the tire of the S6 to the standard tire pressure of the tire by using helium, wherein the helium accounts for more than 90% of the tire.

2. The method for reducing cavity noise of car tire according to claim 1, wherein said steps S1-S7 ensure that the modal frequency of the tire internal cavity in the tire is greatly increased, since the road profile power spectrum is decreased with increasing frequency.

3. The method for reducing cavity noise of car tires according to claim 1, wherein step S7 is performed to reduce the cavity noise of the car tires effectively when the helium concentration in the interior of the tires reaches above 90%.

4. An apparatus for reducing cavity noise in a vehicle tire, comprising: the conveying device comprises a concave type conveying table and a conveying support, and is characterized in that the conveying support is mounted on the concave type conveying table, a fine adjustment moving structure is mounted on the conveying support, a conveying inflation structure is mounted on the fine adjustment moving structure, and a conveying positioning structure is mounted on the concave type conveying table;

the carrying and inflating structure comprises: the device comprises a helium tank, a helium air pump, an expansion liquid pump, a hydraulic tank, a hydraulic drainage tube, cylindrical limiting blocks, a circular ring electromagnet block, a plug-in expansion rod, two pairs of convex expansion blocks with the same structure, two pairs of L-shaped limiting plug-in rods with the same structure, two pairs of inflation tubes with the same structure, a flow division tube, a three-phase control valve and an air extraction component;

the helium tank is arranged on the concave transport table, the helium air pump is arranged on the helium tank, the cylindrical limiting block is arranged on the fine-adjustment moving structure, the hydraulic tank is arranged on the carrying support, the expansion liquid pump is arranged on the hydraulic tank, the annular electromagnet block is arranged at the bottom end of the cylindrical limiting block, the insertion expansion rod is inserted on the cylindrical limiting block, the insertion expansion rod is provided with a drainage groove, the drainage groove is provided with two pairs of convex insertion ports with the same structure, the two pairs of convex expansion blocks are respectively movably inserted in the two pairs of convex insertion ports, the hydraulic drainage tube is connected to the expansion liquid pump and the drainage groove, the two pairs of L-shaped limiting insertion rods are uniformly inserted in the cylindrical limiting block, and the two pairs of inflation tubes are respectively inserted in the two pairs of L-shaped limiting insertion rods, the shunt tubes are connected to the two pairs of inflation tubes, the three-phase control valve is installed on the shunt tubes, and the air exhaust assembly is installed on the three-phase control valve.

5. The apparatus according to claim 4, wherein the fine tuning movement structure comprises: the device comprises a pair of longitudinal screw modules with the same structure, a longitudinal moving plate, a pair of transverse screw modules with the same structure, an extraction plate, two pairs of lifting hydraulic push rods with the same structure, a CCD camera and an integrated control plate;

the pair of longitudinal lead screw modules is horizontally and parallelly installed on the carrying support, the longitudinal moving plate is installed on the pair of longitudinal lead screw module moving ends, the pair of transverse lead screw modules is horizontally and parallelly installed on the longitudinal moving plate, the extracting plate is installed on the pair of transverse lead screw module moving ends, the CCD camera is installed on the extracting plate, the integrated control plate is installed on the extracting plate, the two pairs of lifting hydraulic push rods are respectively installed on the pair of transverse lead screw module moving ends, and the cylindrical limiting block is installed on the extracting plate.

6. The apparatus according to claim 4, wherein the transportation positioning structure comprises: the device comprises a plurality of transport shafts with the same structure, a plurality of transport chain wheels with the same structure, a transport chain, a transmission, a transport driving machine, an infrared emitter and an infrared photoreceptor;

a plurality of transport axle respectively even cartridge in concave type transport table, a plurality of transport sprocket installs respectively in a plurality of transport epaxially, the transportation chain suit in a plurality of transport sprocket is last, the derailleur install in on the concave type transport table, just the derailleur connect in transport epaxially, the transportation driving machine install in on the concave type transport table, just transportation driving machine drive end cartridge in on the derailleur, infrared emitter and infrared ray photoreceptor install relatively in on the concave type transport table.

7. The apparatus according to claim 4, wherein the air-extracting assembly comprises: the device comprises an air extracting box, a recovery box, an air extracting driving machine, an air extracting driving bevel gear, an air extracting transmission bevel gear, an air extracting threaded pipe, an air extracting threaded rod, an air extracting plate, a recovery concave circular ring rubber pad and a concave circular ring air extracting rubber pad;

the exhaust box and the recovery box install in on the other both sides of three-phase control valve, the driving machine that bleeds install in on the exhaust box, the screwed pipe that bleeds pass through the bearing cartridge in on the exhaust box, the transmission helical gear that bleeds install in on the screwed pipe that bleeds, the drive helical gear that bleeds install in on the driving machine drive end that bleeds, just the drive helical gear that bleeds with the transmission helical gear meshing that bleeds, bleed threaded rod activity cartridge in the screwed pipe that bleeds, the exhaust plate install in on the bleed threaded rod, concave ring bleed cushion suit in on the exhaust plate, retrieve concave ring cushion suit in on the recovery plate, the recovery plate and retrieve concave ring cushion activity cartridge in the recovery box.

8. The apparatus for reducing cavity noise of car tire according to claim 4, wherein said three-phase control valve is provided with a pressure sensor.

9. The apparatus for reducing cavity noise of car tire according to claim 4, wherein said carrying bracket is provided with a pressure detecting structure;

the pressure intensity detection structure comprises: the device comprises a pair of concave arc blocks with the same structure, two pairs of measuring hydraulic push rods with the same structure, a pair of measuring arc blocks with the same structure, two pairs of limiting slide ways with the same structure, two pairs of limiting springs with the same structure, two pairs of pressure sensors with the same structure and four pairs of measuring support shafts with the same structure;

four pairs of measuring support shafts are arranged on the carrying bracket in a pairwise parallel manner, a pair of concave arc blocks are respectively provided with two pairs of limiting ports with the same structure, a pair of concave arc blocks are respectively movably inserted on the two pairs of measuring support shafts through the two pairs of limiting ports, two pairs of measuring hydraulic push rods are respectively arranged on two sides of the carrying bracket in a parallel manner, the pushing ends of the two pairs of measuring hydraulic push rods are respectively connected to the pair of concave arc blocks, a pair of concave arc blocks are respectively provided with a telescopic extrusion groove, two pairs of limiting slide ways are respectively arranged in the pair of telescopic extrusion grooves, two pairs of limiting slide blocks are respectively arranged on the pair of measuring arc blocks, the two pairs of limiting slide blocks are respectively movably inserted in the two pairs of limiting slide ways, and two pairs of limiting springs are respectively arranged in the pair of telescopic extrusion grooves, and the two pairs of limiting springs are respectively connected to the pair of measuring arc blocks, and the two pairs of pressure sensors are respectively arranged on the pair of telescopic extrusion grooves and the pair of measuring arc blocks.

10. The apparatus according to claim 4, wherein a pressure-triggered alarm is provided in the recycling bin.

Technical Field

The invention relates to the technical field of tire noise reduction, in particular to a method and equipment for reducing the cavity noise of an automobile tire.

Background

Automobile running noise is one of the main sources of traffic noise, and tires are the only components of the vehicle in contact with the ground, and the noise generated by the tires directly influences the riding comfort of the automobile. The sound production mechanism of the tire is complex, the noise reduction design method is many, but the effect is not ideal.

Disclosure of Invention

The invention aims to provide a method and equipment for reducing the cavity noise of an automobile tire, which have good noise reduction effect and are convenient to operate.

The technical scheme of the invention for realizing the aim is as follows: a method for reducing the cavity noise of car tyre includes such steps as step S1, filling helium gas fixedly; step S2, pressure relief; step S3, helium is filled for the second time; step S4, releasing pressure for the second time; step S5, filling helium for the third time; step S6, releasing pressure for the third time; step S7, fourth helium-filling and air-sealing;

the step S1: pressurizing the tire with helium to a standard tire pressure of the tire;

the step S2: venting the tire of S1 to atmospheric pressure;

the step S3: pressurizing the tire of S2 with helium to the standard tire pressure of the tire;

the step S4: venting the tire of S3 to atmospheric pressure;

the step S5: pressurizing the tire of S4 with helium to the standard tire pressure of the tire;

the step S6: venting the tire of S5 to atmospheric pressure;

the step S7: and (3) pressurizing the tire of the S6 to the standard tire pressure of the tire by using helium, wherein the helium accounts for more than 90% of the tire.

The steps S1 to S7 ensure that the modal frequency of the tire internal cavity in the tire is greatly increased, and the power spectrum of the road profile is reduced along with the increase of the frequency.

In the step S7, the tire cavity noise in the vehicle can be effectively reduced when the helium gas filled in the tire has a concentration of more than 90%.

An apparatus for reducing cavity noise in a vehicle tire, comprising: the conveying support is mounted on the concave conveying table, a fine adjustment moving structure is mounted on the conveying support, a conveying inflation structure is mounted on the fine adjustment moving structure, and a conveying positioning structure is mounted on the concave conveying table;

the carrying and inflating structure comprises: the device comprises a helium tank, a helium air pump, an expansion liquid pump, a hydraulic tank, a hydraulic drainage tube, cylindrical limiting blocks, a circular ring electromagnet block, a plug-in expansion rod, two pairs of convex expansion blocks with the same structure, two pairs of L-shaped limiting plug-in rods with the same structure, two pairs of inflation tubes with the same structure, a flow division tube, a three-phase control valve and an air extraction component;

the helium tank is arranged on the concave transport table, the helium air pump is arranged on the helium tank, the cylindrical limiting block is arranged on the fine-adjustment moving structure, the hydraulic tank is arranged on the carrying support, the expansion liquid pump is arranged on the hydraulic tank, the annular electromagnet block is arranged at the bottom end of the cylindrical limiting block, the insertion expansion rod is inserted on the cylindrical limiting block, the insertion expansion rod is provided with a drainage groove, the drainage groove is provided with two pairs of convex insertion ports with the same structure, the two pairs of convex expansion blocks are respectively movably inserted in the two pairs of convex insertion ports, the hydraulic drainage tube is connected to the expansion liquid pump and the drainage groove, the two pairs of L-shaped limiting insertion rods are uniformly inserted in the cylindrical limiting block, and the two pairs of inflation tubes are respectively inserted in the two pairs of L-shaped limiting insertion rods, the shunt tubes are connected to the two pairs of inflation tubes, the three-phase control valve is installed on the shunt tubes, and the air exhaust assembly is installed on the three-phase control valve.

Preferably, the fine tuning moving structure includes: the device comprises a pair of longitudinal screw modules with the same structure, a longitudinal moving plate, a pair of transverse screw modules with the same structure, an extraction plate, two pairs of lifting hydraulic push rods with the same structure, a CCD camera and an integrated control plate;

the pair of longitudinal lead screw modules is horizontally and parallelly installed on the carrying support, the longitudinal moving plate is installed on the pair of longitudinal lead screw module moving ends, the pair of transverse lead screw modules is horizontally and parallelly installed on the longitudinal moving plate, the extracting plate is installed on the pair of transverse lead screw module moving ends, the CCD camera is installed on the extracting plate, the integrated control plate is installed on the extracting plate, the two pairs of lifting hydraulic push rods are respectively installed on the pair of transverse lead screw module moving ends, and the cylindrical limiting block is installed on the extracting plate.

Preferably, the transportation positioning structure comprises: the device comprises a plurality of transport shafts with the same structure, a plurality of transport chain wheels with the same structure, a transport chain, a transmission, a transport driving machine, an infrared emitter and an infrared photoreceptor;

a plurality of transport axle respectively even cartridge in concave type transport table, a plurality of transport sprocket installs respectively in a plurality of transport epaxially, the transportation chain suit in a plurality of transport sprocket is last, the derailleur install in on the concave type transport table, just the derailleur connect in transport epaxially, the transportation driving machine install in on the concave type transport table, just transportation driving machine drive end cartridge in on the derailleur, infrared emitter and infrared ray photoreceptor install relatively in on the concave type transport table.

Preferably, the air pumping assembly comprises: the device comprises an air extracting box, a recovery box, an air extracting driving machine, an air extracting driving bevel gear, an air extracting transmission bevel gear, an air extracting threaded pipe, an air extracting threaded rod, an air extracting plate, a recovery concave circular ring rubber pad and a concave circular ring air extracting rubber pad;

the exhaust box and the recovery box install in on the other both sides of three-phase control valve, the driving machine that bleeds install in on the exhaust box, the screwed pipe that bleeds pass through the bearing cartridge in on the exhaust box, the transmission helical gear that bleeds install in on the screwed pipe that bleeds, the drive helical gear that bleeds install in on the driving machine drive end that bleeds, just the drive helical gear that bleeds with the transmission helical gear meshing that bleeds, bleed threaded rod activity cartridge in the screwed pipe that bleeds, the exhaust plate install in on the bleed threaded rod, concave ring bleed cushion suit in on the exhaust plate, retrieve concave ring cushion suit in on the recovery plate, the recovery plate and retrieve concave ring cushion activity cartridge in the recovery box.

Preferably, a pressure sensor is arranged on the three-phase control valve.

Preferably, the carrying bracket is provided with a pressure intensity detection structure;

the pressure intensity detection structure comprises: the device comprises a pair of concave arc blocks with the same structure, two pairs of measuring hydraulic push rods with the same structure, a pair of measuring arc blocks with the same structure, two pairs of limiting slide ways with the same structure, two pairs of limiting springs with the same structure, two pairs of pressure sensors with the same structure and four pairs of measuring support shafts with the same structure;

four pairs of measuring support shafts are arranged on the carrying bracket in a pairwise parallel manner, a pair of concave arc blocks are respectively provided with two pairs of limiting ports with the same structure, a pair of concave arc blocks are respectively movably inserted on the two pairs of measuring support shafts through the two pairs of limiting ports, two pairs of measuring hydraulic push rods are respectively arranged on two sides of the carrying bracket in a parallel manner, the pushing ends of the two pairs of measuring hydraulic push rods are respectively connected to the pair of concave arc blocks, a pair of concave arc blocks are respectively provided with a telescopic extrusion groove, two pairs of limiting slide ways are respectively arranged in the pair of telescopic extrusion grooves, two pairs of limiting slide blocks are respectively arranged on the pair of measuring arc blocks, the two pairs of limiting slide blocks are respectively movably inserted in the two pairs of limiting slide ways, and two pairs of limiting springs are respectively arranged in the pair of telescopic extrusion grooves, and the two pairs of limiting springs are respectively connected to the pair of measuring arc blocks, and the two pairs of pressure sensors are respectively arranged on the pair of telescopic extrusion grooves and the pair of measuring arc blocks.

Preferably, a pressure trigger alarm is arranged in the recovery tank.

The invention has the beneficial effects that: move the structure through the fine setting and adsorb the chain fixed, carry out circulating inflation and bleed with the gas in the tire through carrying inflatable structure simultaneously and the subassembly of bleeding, combine to inflate many times and lose heart, because road surface profile power spectrum reduces along with the rising of frequency to ensure that the modal frequency of the inside cavity of tire in the tire promotes by a wide margin.

Drawings

Fig. 1 is a front view structural schematic diagram of the device for reducing the cavity noise of the automobile tire.

Fig. 2 is a schematic side view of the device for reducing cavity noise of the automobile tire according to the present invention.

Fig. 3 is a schematic diagram of a carrying and inflating structure of the device for reducing the cavity noise of the automobile tire.

Fig. 4 is a schematic view of a transportation positioning structure of the device for reducing the cavity noise of the automobile tire.

Fig. 5 is a schematic view of a transportation positioning structure of the device for reducing the cavity noise of the automobile tire.

In the figure: 1. a concave transport table; 2. carrying the bracket; 3. a helium tank; 4. a helium gas extraction pump; 5. an extended liquid pump; 6. a hydraulic tank; 7. a hydraulic drainage tube; 8. a cylindrical limiting block; 9. a circular ring electromagnet block; 10. inserting an expansion rod; 11. a male extension block; 12. an L-shaped limiting plug-in rod; 13. an inflation tube; 14. a shunt tube; 15. a three-phase control valve; 16. a longitudinal lead screw module; 17. longitudinally moving the plate; 18. a transverse lead screw module; 19. an extraction plate; 20. a transport shaft; 21. a transport sprocket; 22. a transport chain; 23. a transmission; 24. a transport drive.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, and a method for reducing cavity noise of an automobile tire includes the following steps, step S1, fixedly filling helium; step S2, pressure relief; step S3, helium is filled for the second time; step S4, releasing pressure for the second time; step S5, filling helium for the third time; step S6, releasing pressure for the third time; step S7, fourth helium-filling and air-sealing; step S1: pressurizing the tire with helium to a standard tire pressure of the tire; step S2: venting the tire of S1 to atmospheric pressure; step S3: pressurizing the tire of S2 with helium to the standard tire pressure of the tire; step S4: venting the tire of S3 to atmospheric pressure; step S5: pressurizing the tire of S4 with helium to the standard tire pressure of the tire; step S6: venting the tire of S5 to atmospheric pressure; step S7: pressurizing the tire of S6 to the standard tire pressure of the tire by helium, wherein the helium in the tire accounts for more than 90%; step S1 to step S7, ensuring that the modal frequency of the tire internal cavity in the tire is greatly increased, since the road profile power spectrum is reduced with the increase of the frequency; and step S7, the helium filled in the tire can effectively reduce the tire cavity noise in the vehicle after the concentration of the helium reaches over 90 percent.

As shown in fig. 1-5, an apparatus for reducing cavity noise in a vehicle tire, comprising: the conveying device comprises a concave type conveying table 1 and a conveying support 2, wherein the conveying support 2 is installed on the concave type conveying table 1, a fine adjustment moving structure is installed on the conveying support 2, a conveying inflation structure is installed on the fine adjustment moving structure, and a conveying positioning structure is installed on the concave type conveying table 1; the carrying and inflating structure comprises: the device comprises a helium tank 3, a helium air pump 4, an expansion liquid pump 5, a hydraulic tank 6, a hydraulic drainage tube 7, a cylindrical limiting block 8, a circular ring electromagnet block 9, an insertion expansion rod 10, two pairs of convex expansion blocks 11 with the same structure, two pairs of L-shaped limiting insertion rods 12 with the same structure, two pairs of inflation tubes 13 with the same structure, a flow dividing tube 14, a three-phase control valve 15 and an air extraction assembly; a helium tank 3 is arranged on a concave transport platform 1, a helium air pump 4 is arranged on the helium tank 3, a cylindrical limiting block 8 is arranged on a fine-adjustment moving structure, a hydraulic tank 6 is arranged on a carrying bracket 2, an expansion liquid pump 5 is arranged on the hydraulic tank 6, a circular ring electromagnet block 9 is arranged at the bottom end of the cylindrical limiting block 8, an insertion expansion rod 10 is inserted on the cylindrical limiting block 8, a drainage groove is arranged on the insertion expansion rod 10, two pairs of convex insertion ports with the same structure are arranged on the drainage groove, two pairs of convex expansion blocks 11 are respectively movably inserted in the two pairs of convex insertion ports, a hydraulic drainage tube 7 is connected to the expansion liquid pump 5 and the drainage groove, two pairs of L-shaped limiting insertion rods 12 are uniformly inserted in the cylindrical limiting block 8, two pairs of inflation tubes 13 are respectively inserted in the two pairs of L-shaped limiting insertion rods 12, a shunt tube 14 is connected to the two pairs of inflation tubes 13, a three-phase control valve 15 is arranged on the shunt tube 14, the air extraction assembly is mounted on a three-phase control valve 15.

Preferably, the fine-tuning moving structure comprises: the device comprises a pair of longitudinal screw modules 16 with the same structure, a longitudinal moving plate 17, a pair of transverse screw modules 18 with the same structure, an extraction plate 19, two pairs of lifting hydraulic push rods with the same structure, a CCD camera and an integrated control plate; the pair of longitudinal screw modules 16 are horizontally and parallelly installed on the carrying support 2, the longitudinal moving plate 17 is installed on the moving ends of the pair of longitudinal screw modules 16, the pair of transverse screw modules 18 are horizontally and parallelly installed on the longitudinal moving plate 17, the extracting plate 19 is installed on the moving ends of the pair of transverse screw modules 18, the CCD camera is installed on the extracting plate 19, the integrated control plate is installed on the extracting plate 19, the two pairs of lifting hydraulic push rods are respectively installed on the double moving ends of the pair of transverse screw modules 18, and the cylindrical limiting block 8 is installed on the extracting plate 19.

Preferably, the transportation positioning structure further comprises: a plurality of transport shafts 20 with the same structure, a plurality of transport chain wheels 21 with the same structure, a transport chain 22, a speed changer 23, a transport driving machine 24, an infrared emitter and an infrared photoreceptor;

a plurality of transport axle 20 respectively even cartridge is on concave type transport table 1, a plurality of transport sprocket 21 is installed respectively on a plurality of transport axle 20, transportation chain 22 suit is on a plurality of transport sprocket 21, derailleur 23 is installed on concave type transport table 1, and derailleur 23 connects on transport axle 20, transportation driving machine 24 is installed on concave type transport table 1, and transport driving machine 24 drive end cartridge is on derailleur 23, infrared emitter and infrared ray photoreceptor install relatively on concave type transport table 1.

Preferably, the air pumping assembly further comprises: the device comprises an air extracting box, a recovery box, an air extracting driving machine, an air extracting driving bevel gear, an air extracting transmission bevel gear, an air extracting threaded pipe, an air extracting threaded rod, an air extracting plate, a recovery concave circular ring rubber pad and a concave circular ring air extracting rubber pad;

the air exhaust box and the recovery box are arranged on the other two sides of the three-phase control valve 15, the air exhaust driving machine is arranged on the air exhaust box, an air exhaust threaded pipe is inserted on the air exhaust box through a bearing, an air exhaust transmission helical gear is arranged on the air exhaust threaded pipe, the air exhaust driving helical gear is arranged on a driving end of the air exhaust driving machine, the air exhaust driving helical gear is meshed with the air exhaust transmission helical gear, an air exhaust threaded rod is movably inserted in the air exhaust threaded pipe, the air exhaust plate is arranged on the air exhaust threaded rod, the concave circular air exhaust rubber pad is sleeved on the air exhaust plate, the recovery concave circular rubber pad is sleeved on the recovery plate, and the recovery plate and the recovery concave circular rubber pad are movably inserted in the recovery box.

Preferably, a pressure sensor is further provided on the three-phase control valve 15.

As a preferred scheme, a pressure intensity detection structure is further arranged on the carrying bracket 2;

the pressure intensity detection structure comprises: the device comprises a pair of concave arc blocks with the same structure, two pairs of measuring hydraulic push rods with the same structure, a pair of measuring arc blocks with the same structure, two pairs of limiting slide ways with the same structure, two pairs of limiting springs with the same structure, two pairs of pressure sensors with the same structure and four pairs of measuring support shafts with the same structure.

Four pairs of measuring support shafts are arranged on the carrying bracket 2 in a pairwise parallel manner, a pair of concave arc blocks are respectively provided with two pairs of limiting ports with the same structure, a pair of concave arc blocks are respectively movably inserted on the two pairs of measuring support shafts through the two pairs of limiting ports, two pairs of measuring hydraulic push rods are respectively arranged on two sides of the carrying bracket 2 in a parallel manner, and the pushing ends of the two pairs of measuring hydraulic push rods are respectively connected to the pair of concave arc blocks, the pair of concave arc blocks are respectively provided with a telescopic extrusion groove, the two pairs of limiting slide ways are respectively arranged in the pair of telescopic extrusion grooves, the two pairs of limiting slide blocks are respectively arranged on the pair of measuring arc blocks, and two pairs of limit slide blocks are respectively and movably inserted in the two pairs of limit slideways, two pairs of limit springs are respectively arranged in the pair of telescopic extrusion grooves, and the two pairs of limiting springs are respectively connected to the pair of measuring arc blocks, and the two pairs of pressure sensors are respectively arranged on the pair of telescopic extrusion grooves and the pair of measuring arc blocks. Preferably, a pressure trigger alarm is arranged in the recovery tank.

The device is operated by a transport driving machine 24 to drive a transmission 23 on the driving end of the transport driving machine 24, a transport shaft 20 on the transmission driving machine is driven to rotate by the transmission 23, a transport chain wheel 21 on the transport shaft 20 is driven to rotate by the transport chain wheel 21, a transport chain 22 on the transport chain wheel is driven to rotate by the transport chain wheel 22, a plurality of transport chain wheels 21 on the transport shaft are respectively driven to rotate by the transport chain wheels 21, tires on the transport shaft are driven to rotate by the transport shaft 20, two pairs of lifting hydraulic push rods on a longitudinal lead screw module 16 and a pair of transverse lead screw modules 18 are operated to extend and retract by the two pairs of lifting hydraulic push rods to drive an extraction plate 19 on the pushing end of the extraction plate, a cylindrical limit block 8 on the extraction plate 19 is driven, and an insertion expansion rod 10 on the cylindrical limit block 8 is inserted into an automobile wheel, the inserted expansion rods 10 are inflated through the inflation tubes 13, so that the two pairs of convex expansion blocks 11 are extended, the automobile wheel is extruded and fixed, meanwhile, the two pairs of L-shaped limiting insertion rods 12 are inserted into the tire with the automobile wheel, the helium tank 3 is pumped into the three-phase control valve 15 through the helium air pump 4, the helium tank 3 is connected with the inflation tubes 13 in the two pairs of L-shaped limiting insertion rods 12 through the three-phase control valve 15, the helium is pumped into the tire through the expanding inflation tube 13, the two pairs of inflation tubes 13 are connected with the air pumping box through the three-phase control valve 15, the air pumping driving bevel gear on the driving end of the air pumping driving machine is driven to rotate through the air pumping driving machine, the air pumping transmission bevel gear meshed with the bevel gear is driven to rotate through the air pumping transmission bevel gear, the air pumping threaded tube on the air pumping threaded rod is driven to rotate through the air pumping threaded tube, and the air pumping threaded rod in the air pumping threaded rod is driven through the air pumping threaded tube, the air pumping plate is driven by the air pumping threaded rod and is lifted in the air pumping box through the air pumping plate, so that the purpose that the gas in the tire is pumped into the air pumping box is achieved, the operation is repeated, and the purpose that the tire cavity noise in the vehicle can be effectively reduced after the helium concentration filled in the tire reaches more than 90% is achieved.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some modifications that may be made to some parts by those skilled in the art all represent the principle of the present invention, and fall within the protection scope of the present invention.