Hot melt tire thermal cycle decay test bench

Abstract

The present application relates to the technical field of tire testing, in particular to a hot melt tire heat cycle attenuation test bench, which has a test environment with heat preservation function, simple structure, can simulate various tire working conditions, has multiple functions and good practicability; including a torque sensor and a hub motor; further comprising a rack, a simulation cylinder, a rotating shaft, a damping mechanism, a driving mechanism and a cover plate, the rotating shaft is concentrically installed on the outer side of the end face of the simulation cylinder, the rotating shaft is rotatably installed on the rack, the torque sensor is installed on the rotating shaft, the damping mechanism applies damping to the rotating shaft, the driving mechanism is movably installed on the bottom plate of the rack, the cover plate is installed on the driving mechanism, the cover plate seals the port of the simulation cylinder, the hub motor is installed on the driving mechanism, the hub motor brings the hot melt tire into the simulation cylinder, the driving mechanism presses the hot melt tire on the simulation road surface of the simulation cylinder through the hub motor, the cover plate is provided with a temperature control mechanism, the temperature control mechanism controls the temperature of the inside of the simulation cylinder, and heat cycle is carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire testing, in particular to a hot melt tire heat cycle attenuation test bench. BACKGROUND

[0002] Heat cycle refers to a thermodynamic process in which the system starts from the initial state, undergoes a series of processes, and returns to the initial state, that is, the final state of the system coincides with the initial state.

[0003] Hot melt tire refers to a tire that melts into a gel state due to the increase in tire surface temperature caused by friction with the road surface during use. In this state, hot melt tires can provide excellent grip for vehicles, and the disadvantages are also obvious. In the molten state, the tire wears very quickly. The working temperature of the hot melt tire is relatively narrow. When the tire is overheated inside and the outside temperature is low, small bubbles will form on the surface of the tire, causing the tire surface to wear and peel off. At the same time, the foamed tire is actually separated from the surface bubbles and the inner layer of rubber, resulting in a decrease in tire adhesion. When the hot melt tire is at a lower tire temperature, the surface temperature will instantaneously increase when braking or sliding, and the inner layer will be relatively cold, which will cause the tire surface to be squeezed and torn and then coagulate into some silk or granular rubber, resulting in a decrease in tire adhesion. Therefore, hot melt tires need to test the adhesion (grip) of each temperature value in a complete heat cycle to obtain the adhesion performance attenuation. In order to complete the above test, a hot melt tire heat cycle attenuation test bench is needed. SUMMARY

[0004] To solve the above technical problems, the present application provides a hot melt tire heat cycle attenuation test bench with a test environment with heat preservation function, simple structure, capable of simulating various tire working conditions, multiple functions and good practicality.

[0005] The hot melt tire hot cycle attenuation test bench of the application comprises a torque sensor and a wheel hub motor, the wheel hub motor is provided with a wheel hub for mounting a hot melt tire assembly; further comprising a rack, a simulation cylinder, a rotating shaft, a damping mechanism, a driving mechanism and a cover plate, a pressure sensor and a temperature sensor are arranged in the air nozzle of the hot melt tire, the rack is provided with a bottom plate and a stand column, the simulation cylinder is provided with a cylindrical shape with one side end face, the inner side wall of the cylindrical shape of the simulation cylinder is provided with an annular simulation road surface, the rotating shaft is concentrically installed on the outer side of the end face of the simulation cylinder, the rotating shaft is rotatably installed on the stand column of the rack, the torque sensor is installed on the rotating shaft, the torque sensor detects the torque received by the rotating shaft, the damping mechanism is installed on the rack, the damping mechanism applies damping to the rotating shaft, the driving mechanism is movably installed on the bottom plate of the rack, the cover plate is installed on the driving mechanism, the cover plate closes the port of the simulation cylinder, the wheel hub motor is installed on the driving mechanism, the wheel hub motor brings the hot melt tire into the simulation cylinder, the driving mechanism presses the hot melt tire on the simulation road surface of the simulation cylinder through the wheel hub motor, the temperature control mechanism is arranged on the cover plate, the temperature control mechanism controls the temperature of the inside of the simulation cylinder for heat cycle; during the test, the hot melt tire assembly is installed on the wheel hub motor, the driving mechanism moves along the bottom plate of the rack, the wheel hub motor and the hot melt tire are sent into the simulation cylinder, the driving mechanism is lowered to press the hot melt tire on the simulation road surface of the simulation cylinder and apply a certain pressure to simulate the vehicle weight, at the same time, the cover plate closes the port of the simulation cylinder, the temperature control mechanism of the cover plate is started, the wheel hub motor drives the hot melt tire to rotate, the hot melt tire drives the simulation cylinder and the rotating shaft to rotate, the temperature control mechanism of the cover plate cooperates with the temperature sensor in the air nozzle to control the inside of the simulation cylinder for heat cycle, so that the temperature of the hot melt tire circulates within a certain range, a plurality of temperature nodes are set, when the temperature reaches the set node temperature, the damping effect of the damping mechanism on the rotating shaft gradually increases until the relative slip between the simulation road surface of the simulation cylinder and the hot melt tire occurs, in this process, the torque sensor detects and records the torque received by the rotating shaft under the action of the driving force of the simulation cylinder and the damping force of the damping mechanism, the torque value obtained by the torque sensor at the moment of relative slip is extracted, and after conversion, the adhesion of the hot melt tire at this node temperature can be obtained, the test continues until the adhesion of the hot melt tire at all temperature nodes is obtained, the hot melt tire heat cycle attenuation test is completed, the cover plate and the simulation cylinder form a test environment with heat preservation function, without the need for a special heat preservation box, by controlling the working mode of the damping mechanism, the tire working conditions such as sudden braking, low resistance walking and high resistance walking can be simulated, the structure is simple, the functions are multiple, and the practicability is good.

[0006] Preferably, the temperature control mechanism comprises a heater and a temperature sensor, the heater and the temperature sensor are installed on the cover plate, the heater and the temperature sensor both extend into the simulation cylinder, the heater is close to the hot tire, the heater heats the inside of the hot tire and the simulation cylinder, the temperature sensor detects the temperature inside the simulation cylinder, and the temperature sensor is electrically connected with the controller of the heater; the heater heats the inside of the hot tire and the simulation cylinder, when the temperature inside the simulation cylinder reaches a set temperature node, the controller controls the heater to pause or reduce power, so that the temperature in the simulation cylinder remains stable, after the test is completed, the heater continues to heat the simulation cylinder, and automatic heating and automatic temperature control are realized.

[0007] Preferably, the temperature control mechanism comprises a heater and a temperature sensor, the heater and the temperature sensor are installed on the cover plate, the heater and the temperature sensor both extend into the simulation cylinder, the heater is close to the hot tire, the heater heats the inside of the hot tire and the simulation cylinder, the temperature sensor detects the temperature inside the simulation cylinder, and the temperature sensor is electrically connected with the controller of the heater; the heater heats the inside of the hot tire and the simulation cylinder, when the temperature inside the simulation cylinder reaches a set temperature node, the controller controls the heater to pause or reduce power, so that the temperature in the simulation cylinder remains stable, after the test is completed, the heater continues to heat the simulation cylinder, and automatic heating and automatic temperature control are realized.

[0008] Preferably, the temperature control mechanism comprises a heater and a temperature sensor, the heater and the temperature sensor are installed on the cover plate, the heater and the temperature sensor both extend into the simulation cylinder, the heater is close to the hot tire, the heater heats the inside of the hot tire and the simulation cylinder, the temperature sensor detects the temperature inside the simulation cylinder, and the temperature sensor is electrically connected with the controller of the heater; the heater heats the inside of the hot tire and the simulation cylinder, when the temperature inside the simulation cylinder reaches a set temperature node, the controller controls the heater to pause or reduce power, so that the temperature in the simulation cylinder remains stable, after the test is completed, the heater continues to heat the simulation cylinder, and automatic heating and automatic temperature control are realized.

[0009] Preferably, the temperature control mechanism comprises a heater and a temperature sensor, the heater and the temperature sensor are installed on the cover plate, the heater and the temperature sensor both extend into the simulation cylinder, the heater is close to the hot tire, the heater heats the inside of the hot tire and the simulation cylinder, the temperature sensor detects the temperature inside the simulation cylinder, and the temperature sensor is electrically connected with the controller of the heater; the heater heats the inside of the hot tire and the simulation cylinder, when the temperature inside the simulation cylinder reaches a set temperature node, the controller controls the heater to pause or reduce power, so that the temperature in the simulation cylinder remains stable, after the test is completed, the heater continues to heat the simulation cylinder, and automatic heating and automatic temperature control are realized.

[0010] Preferably, the temperature control mechanism comprises a heater and a temperature sensor, the heater and the temperature sensor are installed on the cover plate, the heater and the temperature sensor both extend into the simulation cylinder, the heater is close to the hot tire, the heater heats the inside of the hot tire and the simulation cylinder, the temperature sensor detects the temperature inside the simulation cylinder, and the temperature sensor is electrically connected with the controller of the heater; the heater heats the inside of the hot tire and the simulation cylinder, when the temperature inside the simulation cylinder reaches a set temperature node, the controller controls the heater to pause or reduce power, so that the temperature in the simulation cylinder remains stable, after the test is completed, the heater continues to heat the simulation cylinder, and automatic heating and automatic temperature control are realized.

[0011] Preferably, the damping mechanism comprises a damper and a transmission assembly, the damper is installed on the frame, the output shaft of the damper is in transmission connection with the rotating shaft through the transmission assembly, the transmission assembly adopts a synchronous transmission assembly; the transmission assembly can adopt a synchronous belt transmission assembly or a chain transmission assembly, the damper can be a friction brake, an electromagnetic brake or a hydraulic brake, etc., the damper applies variable damping to the rotating shaft through the transmission assembly, so that the damping gradually changes on the rotating shaft and the simulation cylinder.

[0012] Preferably, the driving mechanism comprises a moving table and a simulation suspension, the simulation suspension comprises a cross beam, a spring shock absorber and a pressure sensor, the moving table is movably installed on the bottom plate of the frame, the cross beam is installed on the moving table, the cover plate is installed on the cross beam, the upper end of the spring shock absorber is connected with the cross beam, the hub motor is installed at the lower end of the spring shock absorber, and the pressure sensor is installed at the upper end of the spring shock absorber; the pressure sensor detects the pressure on the hot melt tire; the spring shock absorber has a shock absorber cylinder and a spring, so as to simulate the vehicle suspension, the moving table drives the cross beam to lower the height, so that the spring shock absorber and the hub motor drive the hot melt tire to press on the simulation road surface of the simulation cylinder, the pressing force is detected through the pressure sensor, different weight vehicles can be simulated, and the device has good practicability.

[0013] Preferably, the device further comprises a telescopic adjusting rod, the upper end of the spring shock absorber is provided with the telescopic adjusting rod, and the overall length of the spring shock absorber is adjusted through the telescopic adjusting rod; the overall length of the spring shock absorber is adjusted through the telescopic adjusting rod, so that the device can load hot melt tires of different specifications, and the versatility is improved.

[0014] Preferably, the moving table comprises a sliding rail, a base, a push rod one and a lifting table, the base is installed on the bottom plate of the frame, the base is slidingly installed on the sliding rail, the push rod one is installed on the bottom plate of the frame, the piston rod of the push rod one is connected with the base, the lifting table is installed on the base through a lifting push cylinder, and the cross beam is installed on the lifting table; the push rod one is telescopic to drive the base to move along the sliding rail, so that the hot melt tire enters or exits the simulation cylinder, the lifting push cylinder is telescopic to drive the lifting table to lift, so that the hot melt tire is pressed on the simulation road surface of the simulation cylinder, the technology is mature and reliable, and the operation is simplified.

[0015] The beneficial effects of the present application are: during the test work, the hot melt tire assembly is installed on the wheel hub motor, the driving mechanism moves along the bottom plate of the rack, the wheel hub motor and the hot melt tire are sent into the simulation cylinder, the driving mechanism is lowered to press the hot melt tire on the simulation road surface of the simulation cylinder and apply a certain pressure to simulate the vehicle weight, at the same time, the cover plate seals the port of the simulation cylinder, the temperature control mechanism on the wheel hub motor and the cover plate is started, the wheel hub motor drives the hot melt tire to rotate, the hot melt tire drives the simulation cylinder and the rotating shaft to rotate, the temperature control mechanism of the cover plate cooperates with the temperature sensor in the air nozzle to control the heat circulation of the inside of the simulation cylinder, so that the temperature of the hot melt tire circulates in a certain range, a plurality of temperature nodes are set, when the temperature reaches the set node temperature, the damping mechanism gradually increases the damping effect on the rotating shaft, until the relative slip between the simulation road surface of the simulation cylinder and the hot melt tire occurs, in this process, the torque sensor detects and records the torque of the rotating shaft under the action of the driving force of the simulation cylinder and the damping force of the damping mechanism, the torque value obtained by the torque sensor at the relative slip moment is extracted, and after conversion, the adhesion of the hot melt tire at this node temperature can be obtained, the test is continued until the adhesion of the hot melt tire at all temperature nodes is obtained, the hot melt tire heat cycle attenuation test is completed, the cover plate and the simulation cylinder form a test environment with heat preservation function, without a special heat preservation box, by controlling the working mode of the damping mechanism, the tire working conditions such as sudden braking, low resistance walking and high resistance walking can be simulated, the structure is simple, the functions are multiple, and the practicability is good. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application;

[0017] Figure 2 is an axonometric structural schematic diagram of the present application;

[0018] Figure 3 is a right axonometric structural schematic diagram of the present application;

[0019] Figure 4 is a structural schematic diagram of the rack and the simulation cylinder and the like structure;

[0020] Figure 5 is an outside structural schematic diagram of the cover plate and the temperature control mechanism and the like structure;

[0021] Figure 6 is an inside structural schematic diagram of the cover plate and the temperature control mechanism and the like structure;

[0022] Figure 7 is a structural schematic diagram of the driving mechanism and the wheel hub motor and the like structure;

[0023] Figure 8 is a structural schematic diagram of the hot melt tire and the mark one and the like structure;

[0024] Marked in the drawing: 1, rack; 2, simulation cylinder; 3, rotating shaft; 4, torque sensor; 5, damping mechanism; 6, driving mechanism; 7, cover plate; 8, hub motor; 9, heater; 10, temperature sensor; 11, air cooler; 12, heat dissipation window; 13, sealing ring; 14, camera; 15, mark one; 16, mark two; 17, damper; 18, transmission assembly; 19, cross beam; 20, spring shock absorber; 21, pressure sensor; 22, telescopic adjusting rod; 23, slide rail; 24, base; 25, push rod one; 26, lifting platform. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be clearly, completely and accurately described below with reference to the relevant drawings. The present application can be realized in many different forms, and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] Example 1

[0027] The hot melt tire hot cycle attenuation test bench comprises a torque sensor 4 and a wheel hub motor 8, the wheel hub motor 8 is provided with a wheel hub for mounting a hot melt tire assembly; further comprising a rack 1, a simulation cylinder 2, a rotating shaft 3, a damping mechanism 5, a driving mechanism 6 and a cover plate 7, a pressure sensor and a temperature sensor are arranged in the air nozzle of the hot melt tire, the rack 1 is provided with a bottom plate and a column, the simulation cylinder 2 is arranged as a cylindrical shape with a side end face, the inner side wall of the cylindrical shape of the simulation cylinder 2 is provided with an annular simulation road surface, the rotating shaft 3 is concentrically installed on the outer side of the end face of the simulation cylinder 2, the rotating shaft 3 is rotatably installed on the column of the rack 1, the torque sensor 4 is installed on the rotating shaft 3, the torque sensor 4 detects the torque received by the rotating shaft 3, the damping mechanism 5 is installed on the rack 1, the damping mechanism 5 applies damping to the rotating shaft 3, the driving mechanism 6 is movably installed on the bottom plate of the rack 1, the cover plate 7 is installed on the driving mechanism 6, the cover plate 7 closes the port of the simulation cylinder 2, the wheel hub motor 8 is installed on the driving mechanism 6, the wheel hub motor 8 brings the hot melt tire into the simulation cylinder 2, the driving mechanism 6 presses the hot melt tire on the simulation road surface of the simulation cylinder 2 through the wheel hub motor 8, the cover plate 7 is provided with a temperature control mechanism, the temperature control mechanism controls the temperature of the inside of the simulation cylinder 2, and the hot cycle is carried out; further comprising a camera 14, the camera 14 is installed on the inner wall of the cover plate 7, the lens of the camera 14 faces the contact between the hot melt tire and the simulation road surface of the simulation cylinder 2, the camera 14 is used for detecting whether the hot melt tire and the simulation road surface of the simulation cylinder 2 relatively slide; further comprising a mark one 15 and a mark two 16, the mark one 15 and the mark two 16 are provided with a plurality of mark ones 15 and a plurality of mark twos 16, the plurality of mark ones 15 are respectively pasted on the side surface of the hot melt tire, the plurality of mark twos 16 are respectively pasted on the simulation road surface of the simulation cylinder 2, when the hot melt tire and the simulation cylinder 2 rotate synchronously, the plurality of mark ones 15 and the plurality of mark twos 16 meet respectively, and the camera 14 shoots the mark one 15 and the mark two 16 that meet; the damping mechanism 5 comprises a damper 17 and a transmission assembly 18, the damper 17 is installed on the rack 1, the output shaft of the damper 17 is in transmission connection with the rotating shaft 3 through the transmission assembly 18, and the transmission assembly 18 adopts a synchronous transmission assembly.

[0028] When the test is in progress, the hot melt tire assembly is installed on the wheel hub motor 8, the driving mechanism 6 moves along the bottom plate of the rack 1, the wheel hub motor 8 and the hot melt tire are sent into the simulation cylinder 2, the driving mechanism 6 is lowered to press the hot melt tire against the simulation road surface of the simulation cylinder 2 and apply a certain pressure to simulate the vehicle weight, a plurality of meeting points are arranged on the hot melt tire and the simulation road surface of the simulation cylinder 2 respectively, a plurality of mark I 15 and mark II 16 are pasted on the plurality of meeting points respectively, so that the relative sliding of the hot melt tire and the simulation road surface of the simulation cylinder 2 is more obvious, the test accuracy is improved, at the same time, the cover plate 7 seals the port of the simulation cylinder 2, the temperature control mechanism on the wheel hub motor 8 and the cover plate 7 is started, the wheel hub motor 8 drives the hot melt tire to rotate, the hot melt tire drives the simulation cylinder 2 and the rotating shaft 3 to rotate, the temperature control mechanism of the cover plate 7 controls the heat circulation in the simulation cylinder 2 in cooperation with the temperature sensor in the air nozzle, so that the temperature of the hot melt tire circulates in a certain range, a plurality of temperature nodes are set, when the temperature reaches the set node temperature, the damping effect of the damping mechanism 5 on the rotating shaft 3 gradually increases, the camera 14 sets the shooting frequency according to the rotating speed of the hot melt tire and the simulation cylinder 2, so that when the mark II 16 on the simulation road surface of the simulation cylinder 2 meets the mark I 15 on the hot melt tire, one shooting is performed, when the mark I 15 and the mark II 16 do not meet, it is judged that the relative sliding of the hot melt tire and the simulation road surface of the simulation cylinder 2 occurs, and the time when the sliding occurs is recorded, in this process, the torque sensor 4 detects and records the torque that the rotating shaft 3 receives under the driving force of the simulation cylinder 2 and the damping force of the damping mechanism 5, the torque value obtained by the torque sensor 4 at the relative sliding time is extracted, and after conversion, the adhesion and grip of the hot melt tire at this node temperature can be obtained, the test continues until the adhesion and grip of the hot melt tire at all temperature nodes are obtained, the hot melt tire heat circulation decay test is completed, the cover plate 7 and the simulation cylinder 2 form a test environment with heat preservation function, without a special heat preservation box, by controlling the working mode of the damping mechanism 5, the tire working conditions such as sudden braking, low resistance walking and high resistance walking can be simulated, the structure is simple, the function is multiple, and the practicability is good, the torque value obtained by the torque sensor 4 at this time can be used to convert the maximum adhesion of the hot melt tire, the test accuracy is improved, the transmission assembly 18 can adopt a synchronous belt transmission assembly or a chain transmission assembly, the damper 17 can be a friction brake, an electromagnetic brake or a hydraulic brake, and the damper 17 applies variable damping to the rotating shaft 3 through the transmission assembly 18, so that the damping of the rotating shaft 3 and the simulation cylinder 2 gradually changes.

[0029] Embodiment 2

[0030] On the basis of embodiment 1, the temperature control mechanism comprises a heater 9 and a temperature sensor 10, the heater 9 and the temperature sensor 10 are installed on the cover plate 7, the heater 9 and the temperature sensor 10 both extend into the simulation cylinder 2, the heater 9 is close to the molten tire, the heater 9 heats the inside of the simulation cylinder 2 and the hot melt tire, the temperature sensor 10 detects the temperature inside the simulation cylinder 2, and the temperature sensor 10 is electrically connected with the controller of the heater 9; further comprising a cold air blower 11 and a heat dissipation window 12, the cold air blower 11 is installed on the cover plate 7, the air outlet of the cold air blower 11 extends into the simulation cylinder 2, the cover plate 7 is provided with the heat dissipation window 12, the heat dissipation window 12 communicates with the simulation cylinder 2, and the heat dissipation window 12 is provided with a louver shutter group; further comprising a sealing ring 13, the sealing ring 13 is arranged between the cover plate 7 and the port wall of the simulation cylinder 2, and the sealing ring 13 comprises an annular sealing groove and an annular wear-resistant sealing ring.

[0031] The heater 9 heats the inside of the simulation cylinder 2 and the hot melt tire, when the temperature inside the simulation cylinder 2 detected by the temperature sensor 10 reaches a set temperature node, the controller controls the heater 9 to pause or reduce power, so that the temperature in the simulation cylinder 2 remains stable, after the completion of this test, the heater 9 continues to heat the simulation cylinder 2, realizing automatic heating and automatic control of temperature, when the inside of the simulation cylinder 2 and the hot melt tire need to be cooled, the louver shutter group of the heat dissipation window 12 is opened, the cold air blower 11 runs to input cold air into the simulation cylinder 2, and the cold air is discharged through the heat dissipation window 12, so that rapid cooling is realized, and the performance of the hot melt tire at low temperature can also be tested, the sealing ring 13 arranged between the simulation cylinder 2 and the cover plate 7 can improve the sealing performance, thereby saving energy and improving the efficiency of the temperature control system.

[0032] Embodiment 3

[0033] On the basis of embodiment 1 or embodiment 2, the driving mechanism 6 comprises a moving table and a simulation suspension, the simulation suspension comprises a cross beam 19, a spring shock absorber 20 and a pressure sensor 21, the moving table is movably installed on the bottom plate of the rack 1, the cross beam 19 is installed on the moving table, the cover plate 7 is installed on the cross beam 19, the upper end of the spring shock absorber 20 is connected with the cross beam 19, the hub motor 8 is installed at the lower end of the spring shock absorber 20, and the pressure sensor 21 is installed at the upper end of the spring shock absorber 20; the pressure sensor 21 detects the pressure received by the hot melt tire; further comprising a telescopic adjusting rod 22, the telescopic adjusting rod 22 is installed at the upper end of the spring shock absorber 20, and the overall length of the spring shock absorber 20 is adjusted through the telescopic adjusting rod 22; the moving table comprises a sliding rail 23, a base 24, a push rod 1 25 and a lifting table 26, the base 24 is installed on the bottom plate of the rack 1, the base 24 is slidably installed on the sliding rail 23, the push rod 1 25 is installed on the bottom plate of the rack 1, the piston rod of the push rod 1 25 is connected with the base 24, the lifting table 26 is installed on the base 24 through a lifting push cylinder, and the cross beam 19 is installed on the lifting table 26.

[0034] The spring shock absorber 20 has a shock absorber cylinder and a spring, thereby simulating a vehicle suspension, the moving platform drives the cross beam 19 to lower the height, so that the spring shock absorber 20 and the wheel hub motor 8 drive the hot melt tire to be pressed on the simulated road surface of the simulation cylinder 2, the pressing force is detected by the pressure sensor 21, different weights of vehicles are conveniently simulated, the overall length of the spring shock absorber 20 is adjusted through the telescopic adjusting rod 22, so that the device can load hot melt tires of different specifications, the push rod one 25 drives the base 24 to move along the slide rail 23, so that the hot melt tire is in and out of the simulation cylinder 2, the lifting push cylinder drives the lifting platform 26 to lift, so that the hot melt tire is pressed on the simulated road surface of the simulation cylinder 2, the technology is mature and reliable, and the operation is simplified.

[0035] As shown in Figures 1 to 8 The hot melt tire hot cycle attenuation test bench of the present application, when working, first installs the hot melt tire assembly on the wheel hub motor 8, the push rod one 25 drives the base 24 to move along the bottom plate of the rack 1, sends the wheel hub motor 8 and the hot melt tire into the simulation cylinder 2, the lifting push cylinder drives the lifting platform 26 to lower to press the hot melt tire on the simulated road surface of the simulation cylinder 2, and a certain pressure is applied to simulate the vehicle weight, then multiple marks one 15 and multiple marks two 16 are pasted on the hot melt tire and the simulated road surface respectively, and multiple marks one 15 and multiple marks two 16 are aligned one by one, the cover plate 7 is moved to close the port of the simulation cylinder 2, then the wheel hub motor 8 and the heater 9 on the cover plate 7 are started, the wheel hub motor 8 drives the hot melt tire to rotate, the hot melt tire drives the simulation cylinder 2 and the rotating shaft 3 to rotate, the temperature sensor 10 cooperates with the temperature sensor in the air nozzle to control the heat cycle of the inside of the simulation cylinder 2, so that the temperature of the hot melt tire circulates in a certain range, multiple temperature nodes are set, when the temperature sensor 10 detects that the temperature reaches the set node temperature, the damper 17 gradually increases the damping effect on the rotating shaft 3 through the transmission assembly 18, until the camera 14 detects that the relative slip between the simulated road surface of the simulation cylinder 2 and the hot melt tire occurs, in this process, the torque sensor 4 detects and records the torque that the rotating shaft 3 receives under the action of the driving force of the simulation cylinder 2 and the damping force of the damping mechanism 5, the torque value obtained by the torque sensor 4 at the moment of relative slip is extracted, and after conversion, the adhesion and grip of the hot melt tire at this node temperature can be obtained, finally, the test is continued until the adhesion and grip of the hot melt tire at all temperature nodes are obtained, and the hot cycle attenuation test of the hot melt tire is completed.

[0036] The main functions realized by the present application are:

[0037] 1. The cover plate 7 and the simulation cylinder 2 constitute a test environment with heat preservation function, without the need for a special heat preservation box, and the structure is simple;

[0038] 2. By controlling the working mode of the damping mechanism 5, the tire working conditions such as sudden braking, low resistance walking and high resistance walking can be simulated, and the function is multiple;

[0039] 3. Can load different specifications of hot melt tire to test, good versatility;

[0040] 4. Temperature automatic control, heating and refrigeration function, heat cycle, wide temperature range.

[0041] The installation mode, connection mode or setting mode of the hot melt tire heat cycle attenuation test bench are all common mechanical modes, as long as the beneficial effects can be achieved, and implementation can be carried out; the torque sensor 4, the damping mechanism 5, the wheel hub motor 8, the heater 9, the temperature sensor 10, the air cooler 11, the heat dissipation window 12, the sealing ring 13, the camera 14, the mark 15, the mark 16, the damper 17, the transmission assembly 18, the spring shock absorber 20, the pressure sensor 21, the slide rail 23, the push rod 25, and the push cylinder of the hot melt tire heat cycle attenuation test bench are all common on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the technical personnel in the field having to pay creative labor.

[0042] All technical and scientific terms used herein have the same meanings as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled in the art, without departing from the technical principles of the present application, several improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A thermal cycling attenuation test bench for hot melt tires, comprising a torque sensor (4) and a hub motor (8), wherein the hub motor (8) is provided with a hub for mounting a hot melt tire assembly; characterized in that, It also includes a frame (1), a simulation cylinder (2), a rotating shaft (3), a damping mechanism (5), a drive mechanism (6), and a cover plate (7). A pressure sensor and a temperature sensor are installed in the nozzle of the hot melt tire. The frame (1) is equipped with a base plate and a column. The simulation cylinder (2) is a cylindrical shape with one end face. The inner wall of the simulation cylinder (2) is provided with an annular simulated road surface. The rotating shaft (3) is concentrically installed on the outer side of the end face of the simulation cylinder (2). The rotation of the rotating shaft (3) is mounted on the column of the frame (1). A torque sensor (4) is installed on the rotating shaft (3). The torque sensor (4) detects the torque on the rotating shaft (3). The damping mechanism... (5) Installed on the frame (1), the damping mechanism (5) applies damping to the rotating shaft (3), the drive mechanism (6) is movably installed on the base plate of the frame (1), the cover plate (7) is installed on the drive mechanism (6), the cover plate (7) closes the port of the simulation cylinder (2), the hub motor (8) is installed on the drive mechanism (6), the hub motor (8) brings the hot melt tire into the simulation cylinder (2), the drive mechanism (6) presses the hot melt tire onto the simulated road surface of the simulation cylinder (2) through the hub motor (8), the cover plate (7) is equipped with a temperature control mechanism, the temperature control mechanism controls the temperature inside the simulation cylinder (2) and performs thermal circulation.

2. The thermal cycling attenuation test bench for slick tires as described in claim 1, characterized in that, The temperature control mechanism includes a heater (9) and a temperature sensor (10). The heater (9) and the temperature sensor (10) are mounted on the cover plate (7). Both the heater (9) and the temperature sensor (10) extend into the simulation cylinder (2). The heater (9) is close to the molten tire. The heater (9) heats the inside of the molten tire and the simulation cylinder (2). The temperature sensor (10) detects the temperature inside the simulation cylinder (2). The temperature sensor (10) is electrically connected to the controller of the heater (9).

3. The thermal cycling attenuation test bench for slick tires as described in claim 2, characterized in that, It also includes a cooler (11) and a heat dissipation window (12). The cooler (11) is installed on the cover plate (7). The air outlet of the cooler (11) extends into the simulation cylinder (2). The cover plate (7) is provided with a heat dissipation window (12). The heat dissipation window (12) is connected to the simulation cylinder (2). The heat dissipation window (12) is provided with a louvered gate assembly.

4. The thermal cycling attenuation test bench for slick tires as described in claim 1, characterized in that, It also includes a sealing ring (13), which is provided between the port wall of the cover plate (7) and the simulation cylinder (2). The sealing ring (13) includes an annular sealing groove and an annular wear-resistant sealing ring.

5. The thermal cycling attenuation test bench for slick tires as described in claim 1, characterized in that, It also includes a camera (14), which is mounted on the inner wall of the cover plate (7). The lens of the camera (14) is directed toward the contact point between the hot melt tire and the simulated road surface of the simulation cylinder (2). The camera (14) is used to detect whether the hot melt tire and the simulated road surface of the simulation cylinder (2) are relatively slipping.

6. The thermal cycling attenuation test bench for slick tires as described in claim 5, characterized in that, It also includes Mark 1 (15) and Mark 2 (16). Multiple Mark 1 (15) and Mark 2 (16) are set. Multiple Mark 1 (15) are pasted on the side of the hot melt tire, and multiple Mark 2 (16) are pasted on the simulated road surface of the simulation cylinder (2). When the hot melt tire and the simulation cylinder (2) rotate synchronously, multiple Mark 1 (15) and multiple Mark 2 (16) meet. The camera (14) takes pictures of the meeting Mark 1 (15) and Mark 2 (16).

7. The thermal cycling attenuation test bench for slick tires as described in claim 1, characterized in that, The damping mechanism (5) includes a damper (17) and a transmission assembly (18). The damper (17) is mounted on the frame (1). The output shaft of the damper (17) is connected to the rotating shaft (3) through the transmission assembly (18). The transmission assembly (18) is a synchronous transmission assembly.

8. The thermal cycling attenuation test bench for slick tires as described in claim 1, characterized in that, The drive mechanism (6) includes a moving platform and a simulated suspension. The simulated suspension includes a crossbeam (19), a spring damper (20), and a pressure sensor (21). The moving platform is movably mounted on the base plate of the frame (1). The crossbeam (19) is mounted on the moving platform. The cover plate (7) is mounted on the crossbeam (19). The upper end of the spring damper (20) is connected to the crossbeam (19). The hub motor (8) is mounted on the lower end of the spring damper (20). The pressure sensor (21) is mounted on the upper end of the spring damper (20). The pressure sensor (21) detects the pressure on the hot melt tire.

9. A thermal cycling attenuation test bench for slick tires as described in claim 6, characterized in that, It also includes a telescopic adjustment rod (22), which is installed on the upper end of the spring damper (20) to adjust the overall length of the spring damper (20).

10. A thermal cycling attenuation test bench for slick tires as described in claim 6, characterized in that, The moving platform includes a slide rail (23), a base (24), a push rod (25), and a lifting platform (26). The base (24) is mounted on the bottom plate of the frame (1) and is slidably mounted on the slide rail (23). The push rod (25) is mounted on the bottom plate of the frame (1) and the piston rod of the push rod (25) is connected to the base (24). The lifting platform (26) is mounted on the base (24) through a lifting cylinder, and the crossbeam (19) is mounted on the lifting platform (26).

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