CN210037071U

CN210037071U - Detection device of tire pressure monitoring system

Info

Publication number: CN210037071U
Application number: CN201920977368.1U
Authority: CN
Inventors: 廖春虎; 王晓友; 杨浩; 刘浪; 赵俊; 贾继勇; 刘茹
Original assignee: Xiangyang Daan Automobile Test Center Co Ltd
Current assignee: Xiangyang Daan Automobile Test Center Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-02-07
Anticipated expiration: 2029-06-27

Abstract

A detection device of a tire pressure monitoring system comprises a detection support, wherein the detection support comprises a wheel connecting disc, a supporting rod, an electric integrated sliding ring and a guide support, the wheel connecting disc is arranged in the middle of the axial surface of a wheel to be detected, the supporting rod is arranged along the radial direction of the wheel to be detected, the guide support is parallel to the axial direction of the wheel to be detected, the axis of the electric integrated sliding ring is overlapped with the axis of the wheel connecting disc, a rotor of the electric integrated sliding ring is connected and arranged in the middle of the wheel connecting disc, a ring sleeve sleeved outside a stator of the electric integrated sliding ring is hinged to the lower end of the supporting rod, the upper end of the supporting rod is inserted into; the utility model discloses detect the performance and the reliability of fetal pressure equipment device in real operational environment. The utility model discloses an ingenious structure, high-quality light-duty material furthest reduce equipment self error, make car tire pressure monitoring testing develop on actual road.

Description

Detection device of tire pressure monitoring system

Technical Field

The utility model relates to an automobile road tests the field, concretely relates to tire pressure monitoring system's detection device.

Background

The detection device of the tire pressure monitoring system is part 2 according to the technical safety condition of a transport department JT T1178.2-2019 commercial truck: and (3) a test bed manufactured by a traction vehicle and a trailer and GB26149-2017 passenger vehicle tire air pressure monitoring system. When the automobile is in operation, the failure of the tire can cause a serious traffic accident. The tire pressure monitoring system can assist a driver to control the tire condition, find tire faults in time and avoid traffic accidents to a certain extent. Therefore, according to the existing standard, it is necessary to detect the tire temperature detection device carried by the automobile tire, and in order to simulate the value listed when the tire temperature rises to the required value during the running of the automobile, the tire temperature detection device carried by the tire gives an alarm within a specified time.

A common tire pressure monitoring system detection device is used for testing in a test room bench device. In the running process of the automobile, the internal air pressure state of the automobile tire in actual running is not simulated by laboratory bench test equipment due to the influence of various factors such as the road surface flatness, the self load of the automobile, the structure of an automobile chassis and a suspension, the temperature of the road surface and the ambient temperature and the like. The main sources of high temperature of automobile tires are caused by the relative friction between the tire and the ground and the heat transfer of the road surface, not the ambient temperature. If the environmental temperature is controlled only by people, the real condition of the tire cannot be simulated. Against this background, a detection device for a tire pressure monitoring system suitable for road testing has been invented.

Disclosure of Invention

The utility model aims at overcoming the above-mentioned not enough of prior art and providing a detection device that directly carries out the tire pressure monitoring system of road test to tire pressure monitoring system on real car, the car operating mode on complete whole car counter weight, the actual road makes automobile tire embody truest running state.

The technical scheme of the utility model is that: the detection support comprises a wheel connecting disc arranged in the middle of the axial surface of a wheel to be detected, a support rod arranged along the radial direction of the wheel to be detected, an electric integrated sliding ring and a guide support parallel to the axial direction of the wheel to be detected, wherein the axis of the electric integrated sliding ring is superposed with the axis of the wheel connecting disc, a rotor of the electric integrated sliding ring is connected and arranged in the middle of the wheel connecting disc, a ring sleeve sleeved outside a stator of the electric integrated sliding ring is hinged to the lower end of the support rod, the upper end of the support rod is inserted into a fisheye universal ball head at one end of the guide support, and a strong magnetic chuck connected with;

the wheel connecting disc comprises a connecting disc and a connecting bolt, a central hole and more than three mounting holes uniformly distributed outside the central hole are formed in the middle of the connecting disc, and the central hole is centered and positioned and is positioned on the same axis with the center of a wheel. The mounting hole is used for mounting the electrical integrated slip ring rotor. The centers of the dynamic balance lightening holes and the centers of the long strip parts of the long holes are positioned on the same circumference, and the two half-circle parts of each long hole are respectively positioned on two concentric circumferences; the connecting bolt comprises expansion calipers, a sleeve sleeved outside the expansion calipers and a rotary screw rod used for driving the expansion calipers to move along the sleeve;

the air tap of the wheel to be detected is connected with one end of a hose through a quick connection joint, the middle part of the hose is connected with a pressure sensor in series, the other end of the hose is connected with the inner cavity of a rotor of an electrical integrated slip ring, the inner cavity of a stator of the electrical integrated slip ring is connected with an air outlet interface of an air charging and discharging proportional control valve through a hose II, the air inlet interface of the air charging and discharging proportional control valve is connected with a constant pressure air tank, and the air outlet; the same shaft of the electrical integrated slip ring is provided with two air chambers which are sealed relatively, the cavity A is a rotor inner cavity, the cavity B is a stator inner cavity, the cavity A and the cavity B can rotate relatively along the main shaft, and the cavity A and the cavity B are communicated under any state. A slip ring is arranged in the cavity A and the cavity B, and the slip rings are conducted in any rotating or static state. Turning to the copper rings, the copper rings are tightly close to the insulating rings, and the insulating rings are tightly close to the copper rings, so that each copper ring is insulated. The outer ring of the copper ring is close to the carbon brush, the carbon brush is fixed on the stator, and the carbon brush is in close contact with the copper ring through the tension of the spring. One set of four paths, two paths of power supply and two paths of signals.

The hot air box is connected with an air guide pipe for introducing hot air to the surface of the tire of the wheel to be detected; the device also comprises an infrared temperature measuring sensor for detecting the surface temperature of the wheel tire to be detected; the controller is used for controlling the work of the hot air box according to the signal fed back by the infrared temperature measuring sensor and controlling the work of the air charging and discharging proportion regulating valve according to the signal fed back by the pressure sensor.

The air guide pipe is a cylindrical corrugated pipe capable of being folded and bent, a supporting iron wire is arranged in the cylindrical corrugated pipe, a layer of heat insulation cotton layer is wound outside the cylindrical corrugated pipe, the lower end of the air guide pipe is provided with a bent part facing a wheel to be detected, the iron wire in the pipe can bend the pipe to an appropriate angle which is beneficial to an experiment at will, and the pipe opening of the air guide pipe is a horn mouth.

And the controller is respectively connected with the charging and discharging air proportion regulating valve and a main control panel signal interface of the hot air box circuit. The controller is through controlling the inside IGBT silicon controlled rectifier conduction current of hot-blast incasement for heater strip calorific capacity receives the change of electric current and changes, and the inside fan of hot-blast incasement is driven by the inside converter of hot-blast incasement, and the inside converter of hot-blast incasement is controlled by the controller, realizes that the fan is stepless adjustable. The air outlet temperature is adjustable at 0-300 ℃. The high-temperature resistant air guide pipe transmits the heat energy of the hot air box to the wheel, the wheel is uniformly heated in the rotating process, the air outlet temperature, the air outlet speed and the like of the hot air box are controlled through the feedback of the infrared temperature measuring sensor and the controller, and closed-loop control is formed, so that the tire reaches a constant temperature state.

The end face of the ring sleeve is provided with a circle of flanges extending inwards in the radial direction, mounting holes used for fixing the electric integrated sliding ring are formed in the flanges, an ear plate is arranged on the outer wall of the ring sleeve, the lower end of the connecting sleeve is hinged to the ear plate through a shaft, and a threaded hole connected with the supporting rod in a matched mode is formed in the upper end of the connecting sleeve.

The end face of the ring sleeve is provided with a circle of flanges extending inwards in the radial direction, mounting holes used for fixing the electric integrated sliding ring are formed in the flanges, ear plates are arranged on the outer wall of the ring sleeve, the lower ends of the connecting arms are hinged to the ear plates through shafts, the upper ends of the connecting arms are hinged to support plates at the lower ends of the connecting sleeves through connecting shafts, and threaded holes connected with the support rods in a matched mode are formed in the upper ends of the connecting. The connecting arm can adjust the horizontal distance between the vertical surfaces where the supporting plate and the lug plate are located, and the problem of difference of the horizontal distances between various vehicle body vertical surfaces and the vehicle wheel vertical surfaces is solved. The outer wall of the ring sleeve is provided with a plane convenient to mount.

The support rod is provided with a first sheath and a second sheath, the upper end of the first sheath and the lower end of the second sheath are connected with the support rod through screws and nuts, and the lower end of the first sheath and the upper end of the second sheath are bonded with a shell of the fisheye universal ball head through glue. The sheath is dustproof, prevents that fisheye bulb from easily gluing the dust, leads to detecting support card stopper.

The infrared temperature measuring sensor is arranged at the lower end of the air guide pipe, the air guide pipe is fixed on the air guide pipe magnetic sucker through a hoop, and the infrared temperature measuring sensor and the air guide pipe are wound and fixed on the air guide pipe magnetic sucker through the hoop.

The strong magnetic sucker comprises a rubber disc, more than two sucker fixing plates and magnets, the magnets are arranged in the rubber disc, each sucker fixing plate is arranged on the guide support, and the rubber disc is arranged at the waist-shaped hole of each sucker fixing plate through a bolt; the sucking disc fixing plate is an L-shaped plate and comprises a vertical plate and a transverse plate connected with the vertical plate, the waist-shaped hole is formed in the transverse plate, and the vertical plate and the guide support are fixed through a connecting bolt; magnet is inlayed in the inside honeycomb check of rubber dish, and the outer encapsulation as an organic whole of rubber dish is inside for the magnet granule, and the rubber dish has certain flexibility.

A positioning groove for positioning the sleeve is formed in the surface of the connecting disc at the inner end of the orifice of the long circular hole; the head part of the expansion caliper is provided with a threaded hole, the tail part of the expansion caliper is connected with a plurality of locking claws, each locking claw comprises a claw head and a claw tail which correspond to the automobile wheel fixing bolt, the claw head of each locking claw is enclosed into a cylindrical shape, the claw tail of each locking claw is enclosed into a circular truncated cone ring shape, and the tail end of the inner wall of the sleeve is provided with a circular truncated cone wall matched with the claw tail of each locking claw; the tail part of the rotary screw rod is inserted in the threaded hole, the middle part of the rotary screw rod penetrates through the long round hole, and the head part of the rotary screw rod is sleeved with a guide sleeve; the guide sleeve is of a step-shaped structure and comprises a large sleeve part and a small sleeve part, the small sleeve part is inserted in the long round hole, and the large sleeve part is positioned on the surface of the connecting disc at the outer end of the hole opening of the long round hole.

The sleeve is telescopic sleeve, including nut cover, the screw rod cover, nut cover and screw rod cover threaded connection, through rotatory nut cover and the adjustable sleeve overall length of screw rod cover, the wheel of different motorcycle types of adjustment sleeve length adaptation), the expansion caliper inlays in the screw rod cover, rotatory screw rod passes nut cover and screw rod cover center and the embedded threaded connection of expansion caliper, make the expansion caliper take place the displacement for connection pad and screw rod cover through rotatory screw rod, make the change of expansion caliper bell mouth diameter press from both sides tight auto wheel fixing bolt, T type uide bushing makes rotatory screw rod and connection pad keep perpendicularly.

According to the 2 nd part of the technical safety conditions of transport department JT T1178.2-2019 commercial trucks: the invention discloses a detection device of a tire pressure monitoring system, which is used for detecting the performance of the tire pressure monitoring system in order to realize the most real tire running environment in the performances of a traction vehicle and a trailer and GB26149-2017 passenger vehicle tire pressure monitoring system performance requirements and a test method. The utility model is suitable for a detection of tire pressure monitoring devices of whole wheeled vehicle. The utility model discloses detect tire pressure monitoring system's performance and reliability in real operational environment. The utility model discloses an ingenious structure, high-quality light-duty material furthest reduce equipment self error, make car tire pressure monitoring testing develop on actual road. The utility model discloses possess following advantage: 1. the real road test environment is realized, and the test data is closer to the real state; 2. the structural design is reasonable, and the problem of tire inflation and deflation in the automobile running process is solved; 3. the mode of relying on the environmental chamber to promote ambient temperature, indirectly promoting tire temperature has been solved. The device can directly increase the temperature of the tire, and is closer to the running environment of a real vehicle; 4. the structure is compact, light and portable, and the installation is convenient; 5. detail optimization processing is carried out, external interference is reduced, and reliability of the system is improved; 6. the cost is low.

Drawings

FIG. 1 is a schematic view of the view angle structure in the positive direction of the present invention;

fig. 2 is a schematic side view structure of the present invention;

FIG. 3 is a schematic view of the structure of the ring sleeve of the present invention;

fig. 4 is a schematic structural view of the wheel connecting plate 3;

fig. 5 is a schematic structural view of the wheel connecting plate 3 connected to the wheel 2;

FIG. 6 is an enlarged partial view of FIG. 5;

FIG. 7 is an electrical control schematic block diagram;

in the figure, 1, a vehicle body, 2, a wheel, 3, a wheel connecting disc, 4, an electric integrated slip ring, 5, a pressure sensor, 6, an air inflation and deflation proportion adjusting valve, 7, a constant pressure air tank, 8, a guide support, 9, a quick connecting joint, 10, a first hose, 11, a ring sleeve, 12, a strong magnetic chuck, 13, a hot air tank, 14, an air guide pipe magnetic chuck, 15, a high temperature resistant air guide pipe, 16, an infrared temperature measuring sensor, 17, a controller, 18, a support rod, 19, a connecting disc, 20, a nut sleeve, 21, a screw sleeve, 22, an expansion caliper, 23, a rotating screw, 24, a guide sleeve, 25, a signal wire, 26, a slotted hole, 27, a dynamic balance lightening hole, 28, a center hole, 29, a first sheath, 30, a second sheath, 31, a signal wire, 32, a hoop, 33, an ear plate, 34, a shaft, 35, a support plate, 36, a connecting shaft, 37.

Detailed Description

In fig. 1 and 2, the utility model discloses install on the car, including wheel connection pad 3, electric integrative sliding ring 4, ring cover 11, guide bracket 8, strong magnetic chuck 12, pressure sensor 5, quick connect coupling 9, hose 10, fill gassing proportion control valve 6, constant voltage gas pitcher 7, controller 17, hot-blast case 13, guide duct magnetic chuck 14, anti high temperature guide duct 15, infrared temperature sensor 16, wheel 2, automobile body 1. The stator of electric integrative sliding ring 4 is being connected to ring cover 11 lower extreme, the upper end is freely worn the cover in the universal bulb of fisheye of guide bracket 8, the universal bulb outside of fisheye is drum form casing, the middle part diameter is the biggest, two terminal surface diameters equal and be less than the middle part diameter, inside is the ball, the ball also is drum form, ball initial point position drum plane is parallel with shell drum plane, the distance between two drumheads of ball is greater than outside drum form casing, the ball is wrapped up by outside drum form casing, the shell centre of a circle is in same position with the spheroid centre of a circle, the ball can freely rotate on same centre of a sphere for the shell, cylindric hole is drawn out at the ball center, ring cover 11 upper end is freely flexible along the axial in the cylindric downthehole of ball.

One end of the guide support 8 is connected with the two circular magnetic suckers through screws, and the circular magnetic suckers are adsorbed on the vehicle body 1 and do not move relatively. The other end is connected with a fisheye universal ball head through threads, and the upper end of a support rod 18 of a drum-shaped shell outside the ball head is sleeved in the ball head. The upper end of the support rod 18 is freely sleeved in the fisheye universal ball head of the guide support 8, and the fisheye ball head shell is connected with the vehicle body 1 through a connecting rod and a sucker through screws and keeps static. When the wheels 2 running on the road are influenced by the flatness of the road surface and the steering of the wheels and the wheels 2 move relative to the vehicle body 1 in a vertical mode, the supporting rod 18 can freely stretch and retract in the ball head. When the wheels 2 are steered and driven with steering, an included angle is formed between the rotating circular surface of the wheels 2 and the horizontal neutral line of the vehicle body 1, and the support rod 18 is sleeved in the fisheye ball head of the guide support 8 to rotate so as to play a supporting role. When the vehicle runs, the wheel 1 is in any state, the supporting rod 18 and the guide support 8 are matched to use, so that the electric integrated slip ring stator does not rotate relative to the vehicle body, an electric pipeline is prevented from being wound by the wheel, and meanwhile, the internal electric signal and the tire gas of the rotating wheel 2 are transmitted out during dynamic measurement.

The supporting rod 18 is freely sleeved in the fisheye universal ball head of the guide support 8, a first sheath 29 and a second sheath 30 are arranged at the upper end and the lower end of the fisheye universal ball head of the supporting rod 18, the upper end of the first sheath 29 and the lower end of the second sheath 30 are connected with the supporting rod 18 through screws and nuts, and the lower end of the first sheath 29 and the upper end of the second sheath 30 are bonded with a shell of the fisheye universal ball head through glue. The first sheath 29 and the second sheath 30 are soft leather sleeves, have elasticity, do not interfere the relative motion between the support rod 18 and the guide support 8, and mainly aim at preventing dust in the environment from blocking the fisheye universal ball head.

The electric integrated slip ring 4 is provided with two air chambers on the same shaft, namely a cavity A and a cavity B, the cavity A and the cavity B are sealed relatively, the cavity A and the cavity B can rotate relatively along the main shaft, and the cavity A and the cavity B are communicated in any state. A slip ring is arranged in the cavity A and the cavity B, and the slip rings are conducted in any rotating or static state. The cables with the cavities A and the cavities B are in a conducting state, and each cable is in an insulating state. A cavity of the electric integrated sliding ring 4 is connected with the multi-hole-site flange 3 through bolts, and a cavity B of the electric integrated sliding ring 4 is connected with the bracket 11 through bolts. One end of a signal wire 25 is connected with the pressure sensor 5, the other end of the signal wire is connected with a cavity A of the electrical integrated slip ring 4, a signal is transmitted to a cavity B of the electrical integrated slip ring 4 through the electrical integrated slip ring 4, the cavity B of the electrical integrated slip ring 4 is connected with one end of a signal wire 31, the other end of the signal wire 31 is connected with the controller 17, and the signal wire 31 is fixed on a support of the powerful suction cup 12 through a clamp 32.

The quick connecting joint 9 is connected with the air tap of the wheel 2, one end of the first hose 10 is connected with the quick connecting joint 9, the other end of the first hose is connected with the cavity A of the electrical integrated slip ring 4, and the middle of the first hose 10 is connected with the pressure sensor 5 in series.

The strong magnetic chuck 12 is connected with the vehicle body 1, the support rod 18 penetrates through a fisheye universal ball head of the strong magnetic chuck 12, and the support rod 18 can move freely on the strong magnetic chuck 12, so that the support rod aims to dissolve the runout of the wheel 2 in the dynamic motion and turning process of the wheel 2 and plays a role in supporting.

The inflation and deflation proportion adjusting valve 6 is provided with three air holes, one air hole is connected with the constant pressure air tank 7, the other air hole is communicated with the atmosphere, the other air hole is connected with the cavity B of the electrical integrated slip ring, the three air holes can be communicated with each other according to the change of the state of the valve core inside the proportion adjusting valve 6, the inflation and deflation proportion adjusting valve 6 is connected with the controller 17 through a wire and transmits electric signals in two directions, the air pressure of the constant pressure air tank 7 is higher than the air pressure inside the wheel 2, and the inflation and deflation proportion adjusting valve 6 can quickly deflate and inflate the wheel 2.

The air guide pipe magnetic suction cup 14 is connected with the vehicle body 1, the high temperature resistant air guide pipe 15 and the infrared temperature measurement sensor 16 are fixed on the air guide pipe magnetic suction cup 14, and the hot air box 13 is arranged in the vehicle. The clip 32 is used to fix the signal line 31.

In fig. 3, the lower end of the connecting arm 37 is hinged on the ear plate 33 through the shaft 34, the upper end of the connecting arm 37 is hinged on the support plate 35 at the lower end of the connecting sleeve through the connecting shaft 36, the lower end of the supporting rod 18 is the connecting sleeve, the support plate 35 and the ear plate 33 are connected into a whole through the connecting arm 37, and the support plate 35 is adjustable in both horizontal and vertical directions relative to the ear plate 33. The electric integrated slip ring stator is arranged on the outer ring of the ring sleeve 11 and connected through bolts.

In fig. 4, the wheel connecting disc 3 is composed of connecting discs 19 and connecting bolts, an included angle a between connecting lines of circle centers of two semicircular parts of two adjacent long circular holes is an acute angle, the semicircular parts at two ends of each long circular hole are positioned on a big circle and a small circle to form an inclined included angle, every two adjacent circular holes are mutually overlapped, and finally the whole connecting disc 19 is covered. The connecting disc 19 is provided with 10 long round holes 26, 2 dynamic balance weight-reducing holes 27 and a central hole 28, wherein the 10 long round holes 26 are spirally distributed on the connecting disc 19, and 3 screw holes are uniformly distributed on a circle with the center of the central hole 28 being 4 times of the radius distance of the central hole 28. The wheel connecting disc 3 is connected with the wheel 2, the vertical planes of the wheel connecting disc 3 and the wheel 2 are kept parallel and rotate on the same axis by adjusting the position of a connecting bolt of the wheel connecting disc 3, and the connecting bolt is flexibly adjusted in the long round hole 26 to adapt to various vehicle types. The wheel connecting disc 3 is punched to form 2 dynamic balance lightening holes 27, so that the wheel connecting disc 3 dynamically rotates on a central hole 28 along a circular surface to achieve balance.

In fig. 5 and 6, the connecting bolt includes an expansion caliper 22, a sleeve sleeved outside the expansion caliper 22, and a rotary screw 23 for driving the expansion caliper 22 to move along the sleeve. The surface of the connecting disc 19 at the inner end of the orifice of the oblong hole 26 is provided with a positioning groove for positioning the sleeve. The head of the expansion caliper 22 is provided with a threaded hole, the tail of the expansion caliper 22 is connected with a plurality of locking claws, each locking claw comprises a claw head and a claw tail corresponding to the automobile wheel fixing bolt, the claw head of each locking claw is enclosed into a cylindrical shape, the claw tail of each locking claw is enclosed into a circular truncated cone ring shape, and the tail end of the inner wall of the sleeve is provided with a circular truncated cone wall matched with the claw tail of each locking claw. The tail of the rotary screw 23 is inserted into the threaded hole, the middle of the rotary screw 23 penetrates through the long round hole, and the head of the rotary screw 23 is sleeved with a guide sleeve 24. The guide sleeve 24 is of a step-shaped structure and comprises a large sleeve part and a small sleeve part, the small sleeve part is inserted into the long round hole 26, and the large sleeve part is located on the surface of the connecting disc 19 at the outer end of the orifice of the long round hole 26. The sleeve is a telescopic sleeve and comprises a nut sleeve 20 and a screw sleeve 21, the nut sleeve 20 is in threaded connection with the screw sleeve 21, the overall length of the sleeve can be adjusted by rotating the nut sleeve 20 and the screw sleeve 21, the length of the sleeve is adjusted to adapt to wheels of different vehicle types, the expansion caliper 22 is embedded in the screw sleeve 21, the rotating screw 23 penetrates through the centers of the nut sleeve 20 and the screw sleeve 21 to be in embedded threaded connection with the expansion caliper 22, the expansion caliper 22 is displaced relative to the connecting disc 19 and the screw sleeve 21 by rotating the rotating screw 23, the diameter of a conical opening of the expansion caliper 22 is changed to clamp a wheel fixing bolt of an automobile, and the rotating screw 23 is kept perpendicular to the connecting disc 19 by the guide.

In fig. 7, the hot air box 13 is connected to the controller 17 through a wire, and transmits signal data in two directions, and the end of the high temperature resistant air duct 15 is flared for air outlet and angle adjustment, so as to heat the tire. The infrared temperature measurement sensor 16 is a non-contact temperature sensor, the infrared temperature measurement sensor 16 is connected with the hot air box 13 through a conducting wire, and the infrared temperature measurement sensor 16 feeds back a real-time temperature signal of the wheel 2 to the hot air box 13. The wheel 2 in the motion process can transmit the air pressure signal of the pressure sensor 5 to the controller 17 in real time, the controller 17 controls the inflation and deflation proportion adjusting valve 6 to form a complete closed-loop control, and the controller 17 can write programs, so that inflation and deflation under various test modes are realized. The high temperature resistant air duct 15 transfers the heat energy of the hot air box 13 to the wheel 2, the wheel 2 is uniformly heated in the rotating process, the air outlet temperature, the air outlet speed and the like of the hot air box 13 are controlled by the feedback of the infrared temperature measuring sensor 16 and the controller 17, and a closed loop control is formed, so that the tire reaches a constant temperature state.

During detection, an operator drives the vehicle to run or stand in a road, a target tire pressure value and an error value are set for the controller 17, a start button is pressed, the controller 17 compares a numerical value fed back by the pressure sensor 5 with the set target tire pressure value to calculate, the inflation and deflation proportion adjusting valve 6 is controlled to inflate or deflate the tire, the feedback value of the pressure sensor 5 is enabled to be infinitely close to the set target tire pressure value, when the difference between the feedback value of the pressure sensor 5 and the absolute value of the set target tire pressure value is smaller than the preset error value, the controller 17 triggers the electronic clock to time until the vehicle-mounted tire pressure monitoring device gives an alarm, a tester stops timing, and the generated time is used as a basis for judging whether the vehicle-mounted tire pressure monitoring device is qualified or not. The air charging and discharging proportion regulating valve 6 is provided with three interfaces, one is an air inlet interface, the other is an air outlet interface, the air outlet interface is communicated with the atmosphere, and the air inlet interface is connected with a constant pressure air tank 7. The air pressure of the air inlet interface is higher than that of the air outlet interface, and the air outlet interface is atmospheric pressure. The air inlet, the air outlet and the air outlet can be communicated with each other through the valve body internal mechanism, and when the pressure of the air outlet is overlarge, the valve body internal mechanism adjusts the communication gap between the air outlet and the air outlet to achieve the purpose of air release. When the pressure of the air outlet is too small, the internal mechanism of the valve body adjusts the conduction gap between the air inlet and the air outlet, so that the purpose of inflation is achieved. The electric signal is converted into an electromagnetic signal to drive the internal mechanism of the valve body.

Claims

1. A detection device of a tire pressure monitoring system is characterized in that: the device comprises a detection support, wherein the detection support comprises a wheel connecting disc (3) arranged in the middle of the axial surface of a wheel to be detected, a supporting rod (18) arranged along the radial direction of the wheel to be detected, an electric integrated sliding ring (4) and a guide support (8) parallel to the axial direction of the wheel to be detected, the axis of the electric integrated sliding ring (4) is superposed with the axis of the wheel connecting disc (3), a rotor of the electric integrated sliding ring (4) is connected and arranged in the middle of the wheel connecting disc (3), a ring sleeve (11) sleeved outside a stator of the electric integrated sliding ring (4) is hinged to the lower end of the supporting rod (18), the upper end of the supporting rod (18) is inserted into a fisheye universal ball head at one end of the guide support (8), and a strong magnetic chuck (12;

the wheel connecting disc (3) consists of a connecting disc (19) and connecting bolts, the middle part of the connecting disc (19) is provided with a central hole (28) and more than three mounting holes uniformly distributed outside the central hole (28), the periphery of the connecting disc (19) is provided with more than one dynamic balance lightening hole (27) and long round hole groups, each long round hole group comprises more than three long round holes (26) distributed in a spiral shape, each long round hole (26) comprises two semicircular parts located at two ends and a long strip part connected between the two semicircular parts, the circle centers of the dynamic balance lightening holes (27) and the centers of the long strip parts of the long round holes are located on the same circumference, and the two semicircular parts of each long round hole are respectively located on two concentric circumferences; the connecting bolt comprises expansion calipers (22), a sleeve sleeved outside the expansion calipers (22), and a rotary screw (23) used for driving the expansion calipers (22) to move along the sleeve;

an air tap of a wheel to be detected is connected with one end of a first hose (10) through a quick connection joint (9), the middle part of the first hose (10) is connected with a pressure sensor (5) in series, the other end of the first hose (10) is connected with a rotor inner cavity of an electric integrated sliding ring (4), a stator inner cavity of the electric integrated sliding ring (4) is connected with an air outlet interface of an inflation and deflation proportion adjusting valve (6) through a second hose, and an air inlet interface of the inflation and deflation proportion adjusting valve (6) is connected with a constant pressure air tank;

the hot air box (13) is connected with an air guide pipe (15) which is used for introducing hot air to the surface of the tire of the wheel to be detected; the device also comprises an infrared temperature measuring sensor (16) for detecting the surface temperature of the wheel tire to be detected; the device also comprises a controller (17) which is used for controlling the work of the hot air box (13) according to the signal fed back by the infrared temperature measuring sensor (16) and controlling the work of the inflation and deflation proportion adjusting valve (6) according to the signal fed back by the pressure sensor (5).

2. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the air guide pipe (15) is a cylindrical corrugated pipe capable of being folded and bent, a supporting iron wire is arranged in the cylindrical corrugated pipe, a layer of heat insulation cotton layer is wound outside the cylindrical corrugated pipe, a bent part facing to a wheel to be detected is arranged at the lower end of the air guide pipe (15), and the pipe orifice of the air guide pipe (15) is a horn mouth.

3. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the controller (17) is respectively connected with the air charging and discharging proportion regulating valve (6) and the hot air box (13).

4. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the end face of the ring sleeve (11) is provided with a circle of flanges extending inwards in the radial direction, mounting holes used for fixing the electric integrated sliding ring (4) are formed in the flanges, ear plates (33) are arranged on the outer wall of the ring sleeve (11), the lower end of the connecting sleeve is hinged to the ear plates (33) through shafts (34), and threaded holes matched and connected with the supporting rods (18) are formed in the upper end of the connecting sleeve.

5. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the end face of the ring sleeve (11) is provided with a circle of flange extending inwards in the radial direction, the flange is provided with a mounting hole used for fixing an electric integrated sliding ring (4), the outer wall of the ring sleeve (11) is provided with an ear plate (33), the lower end of a connecting arm (37) is hinged to the ear plate (33) through a shaft (34), the upper end of the connecting arm (37) is hinged to a support plate (35) at the lower end of the connecting sleeve through a connecting shaft (36), and the upper end of the connecting sleeve is provided with a threaded hole connected with a support rod (18).

6. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the support rod (18) is provided with a first sheath (29) and a second sheath (30), the upper end of the first sheath (29) and the lower end of the second sheath (30) are connected with the support rod (18) through screws and nuts, and the lower end of the first sheath (29) and the upper end of the second sheath (30) are bonded with a shell of the fisheye universal ball head through glue.

7. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the infrared temperature measuring sensor (16) is arranged at the lower end of the air guide pipe (15), and the air guide pipe (15) is fixed on the air guide pipe magnetic sucker (14) through a hoop.

8. The detecting device of a tire pressure monitoring system according to claim 7, wherein: the strong magnetic sucker (12) comprises a rubber disc, more than two sucker fixing plates and magnets, the magnets are arranged in the rubber disc, each sucker fixing plate is arranged on the guide support (8), and the rubber disc is arranged at the waist-shaped hole of each sucker fixing plate through a bolt; the sucking disc fixed plate is the L shaped plate, including the riser, with the diaphragm that the riser is connected, waist shape hole locate on the diaphragm, the riser is fixed through connecting bolt with guide bracket (8).

9. The detecting device of a tire pressure monitoring system according to claim 1, wherein: a positioning groove for positioning the sleeve is formed in the surface of the connecting disc (19) at the inner end of the orifice of the long circular hole (26);

the head of the expansion caliper (22) is provided with a threaded hole, the tail of the expansion caliper (22) is connected with a plurality of locking claws, each locking claw comprises a claw head and a claw tail which correspond to the automobile wheel fixing bolt, the claw head of each locking claw is enclosed into a cylindrical shape, the claw tail of each locking claw is enclosed into a circular truncated cone ring shape, and the tail end of the inner wall of the sleeve is provided with a circular truncated cone wall matched with the claw tail of each locking claw;

the tail of the rotating screw rod (23) is inserted into the threaded hole, the middle of the rotating screw rod (23) penetrates through the long round hole, and the head of the rotating screw rod (23) is sleeved with a guide sleeve (24);

the guide sleeve (24) is of a step-shaped structure and comprises a large sleeve part and a small sleeve part, the small sleeve part is inserted into the long round hole (26), and the large sleeve part is located on the surface of the connecting disc (19) at the outer end of the orifice of the long round hole (26).

10. The detecting device of a tire pressure monitoring system according to claim 1, wherein: the sleeve is a telescopic sleeve and comprises a nut sleeve (20) and a screw rod sleeve (21), the nut sleeve (20) is in threaded connection with the screw rod sleeve (21), the expansion caliper (22) is embedded in the screw rod sleeve (21), and the rotary screw rod (23) penetrates through the centers of the nut sleeve (20) and the screw rod sleeve (21) to be in embedded threaded connection with the expansion caliper (22).