CN213022325U

CN213022325U - Dynamic monitoring system for tire testing process

Info

Publication number: CN213022325U
Application number: CN202021824767.3U
Authority: CN
Inventors: 陆峰; 刘晓民; 满忠雷; 乔慧君
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-04-20
Anticipated expiration: 2030-08-27

Abstract

The utility model relates to a tire rotation test field, specific tire test process dynamic monitoring system that says so. The device comprises a U-shaped support, a U-shaped guide rail, a servo motor, a driving wheel, a large synchronous wheel, a small synchronous wheel, a tension wheel, a synchronous belt, a rolling bearing, a transmission shaft, an angle encoder, a monitoring sensor and a PC. The test tire is fixed in a U-shaped groove of the U-shaped support and is relatively static with the U-shaped support, and a rotating shaft of the test tire is coaxially connected with the angle encoder and is vertical to two side edges of the U-shaped support. The monitoring sensor moves along the U-shaped guide rail under the driving of the servo motor, the revolution number of the servo motor can be converted into the information of the scanning radius (r) and the scanning section width (w) of the tested tire, and the angle encoder can obtain the rotation angle (theta) of the tested tire. In the monitoring process, the PC acquires the grid data (r, w, theta and M) of the tested tire as required (M is the acquired data of the monitoring sensor), and acquires the required dynamic monitoring data.

Description

Dynamic monitoring system for tire testing process

Technical Field

The utility model relates to a tire test fields such as tire high speed performance, durability and centrifugal swell test, specific tire test process dynamic monitoring system that says so.

Background

China is a tire production country, the yield of tires in China accounts for about 40% of the yield of the whole world, and the tires are the first world in 12 continuous years, but the current situation of the tires in China is high in yield, low in additional value and extremely low in brand influence, the current situation needs to be changed, brand propaganda of tire enterprises is essential, more importantly, research and development and quality control are enhanced, products are really accepted by consumers, and the tire enterprises need accurate and efficient tire detection equipment for supporting no matter the research and development are enhanced or the quality control is enhanced. Currently, internationally common tire safety testing items include high speed performance, endurance performance, low air pressure performance (car tires) and centrifugal bulge test (motorcycle tires). These test items all require the tire to rotate at high speed (up to 50 r/s), in this case, it is almost impossible to perform manual fixed-point measurement on the tire, but there is often a dynamic monitoring requirement in reality, for example, in the test process, it is necessary to research parameters such as deformation, temperature, etc. at a certain point, a certain radius (such as shoulder, sidewall, bead) or the whole tire surface of the tire, there are some tire centrifugal amount detection systems or temperature monitoring systems on the market at present, but the existing systems can only monitor information of a certain radius or section width of the tire, cannot perform full-profile monitoring, and do not have tire angle information, and cannot perform fixed-point research. If the quality problems occur, a monitoring system is required to identify and early warn in time, so that not only can the process and the type of tire damage be researched, but also the risk that the test equipment is damaged by the flat tire can be reduced. The conventional explosion-proof fork can be used for monitoring bulging and tire burst, but has low sensitivity, and the tire is basically and completely scrapped when triggered, so that the explosion-proof fork cannot be used for tracking and researching the tire damage process. For another example, the outer edge dimension and the appearance of the tire are usually measured after high-speed and durable testing, the temperature of the tire is high in a short time after the testing is completed, the risk of tire burst is high, personal injury is likely to be caused if the tire is manually tested immediately, usually, a tester waits for the tire to be tested and tested after being cooled, and the tire is cooled, so that the measurement error is caused, and important information (such as a bulge and retraction after cooling) can be omitted.

In view of the above, it is desirable to develop a tire testing process dynamic monitoring system.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a dynamic monitoring system for a tire testing process, which can measure gridded tire point, line and surface data such as the outer edge size, the centrifugal swelling position and size, the deformation amount, the damage starting point and the tire surface temperature distribution state of a tire.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the system is U-shaped in appearance, a U-shaped guide rail (2) and a transmission system are respectively fixed on the front surface and the rear surface of a U-shaped support (3) in the Z direction, the transmission system comprises a driving wheel (10), a large synchronous wheel (14), a small synchronous wheel (9), a synchronous belt (11) and a transmission steel plate (7), the large synchronous wheel (14) is positioned at the bottom angle of the U-shaped support (3), the small synchronous wheel (9) is positioned on the long side edge of the U-shaped support and opposite to the driving wheel (10), a tension wheel (13) is positioned at the inner ring of the synchronous belt (11), one end of the transmission steel plate (7) is fixed on the synchronous belt (removing teeth at fixed positions and replacing the teeth with steel inserts), the other end of the transmission steel plate is fixed on a sliding block of the U-shaped guide rail (2), the power of a servo motor (1) is output through the driving wheel (10) and drives a monitoring sensor (5) on the sliding block of the guide rail through the, scanning the tire arranged in the U-shaped groove, wherein the rotating shaft of the tire is coaxial with the transmission shaft (15), the axial line and the signal source center of the monitoring sensor (5) are positioned on the same Z-direction plane and are vertical to two parallel sides of the U-shaped bracket, so that the position information of the monitoring sensor (5) on the U-shaped bracket can be associated with r (scanning radius) and w (scanning section width) in tire coordinates (r, w, theta) through the revolution of the servo motor (1): r when scanning the front side sidewall and shoulder_{Tire bead}≤r≤r_{Tire shoulder}W =0, r when scanning the reverse sidewall and shoulder_{Tire bead}≤r≤r_{Tire shoulder}，w=w_{Width of cross section}(ii) a R = r when scanning tread_{Tire shoulder}，0≤w≤w_{Width of cross section}Convenient watchReaching the contour monitoring information; an angle encoder (6) is fixed at the end part of the long side of the U-shaped support through a transmission shaft (15) and a rolling bearing (8), and is in butt joint with a rotating shaft of the tested tire through a coupler (4), so that the rotating angle theta of the tested tire is further obtained, and the grid point, line and plane information of the tested tire is obtained after the (r, w, theta) and the monitoring information M of the monitoring sensor (5) are sampled and processed by a PC. The system can be fixed on a loading platform of a tire testing machine through channel steel, and a fixed screw hole (12) and the loading platform are respectively connected to two side faces of the channel steel during fixing. Before testing, the monitoring sensor performs U-shaped scanning on the tire to obtain scanning range data (determining r)_maxAnd w_max) In the testing process, parameters (r, w, theta and M) are simultaneously acquired to a PC (personal computer) at any sampling moment, node information of the surface of the tested tire can be obtained by setting (r, w and theta), the tire pitch circle information can be obtained by setting (r, w) to change theta, further, the grid monitoring information of the whole tested tire can be obtained by gradually changing (r, w and theta), and the grid density is adjustable. According to the monitoring requirement, after the corresponding monitoring sensor is replaced and the monitoring condition is set, the tire testing process can be dynamically monitored.

The utility model discloses the beneficial effect who has does:

the utility model discloses can carry out dynamic monitoring to the tire in the testing process, acquire dynamic data such as temperature field, deflection, centrifugation volume, deformation position and destruction process on tire surface in real time, provide data support for tire test and tire research and development.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

wherein: 1-a servo motor, 2-a U-shaped guide rail, 3-a U-shaped bracket, 4-a coupler, 5-a monitoring sensor and 6-an angle encoder;

FIG. 2 is a reverse schematic view of the overall structure of the present invention;

wherein: 7-a transmission steel plate, 8-a rolling bearing, 9-a small synchronous wheel, 10-a driving wheel, 11-a synchronous belt, 12-a fixed screw hole, 13-a tension wheel, 14-a large synchronous wheel and 15-a transmission shaft.

FIG. 3 is a schematic diagram of an embodiment of the present invention;

16-rotating drum, 17-testing tire, 18-loading platform and 19-fixing channel steel.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings:

in this embodiment will the utility model is used for the destruction process monitoring when tire durability tests, monitoring sensor (5) adopt laser range finder. As shown in figure 3, the utility model discloses a fixed channel-section steel (19) is fixed on loading platform (18), and during the test, loading platform (18) promote test tire (17) make it lean on rotatory rotary drum (16) to exert rated load. During testing, the tire is in a rotating state, the rotating shaft of the tested tire is in butt joint with the transmission shaft (15) through the coupler (4), and the rotating angle information of the tested tire is transmitted to the angle encoder (6) through the rolling bearing (8) and the transmission shaft (15). The laser range finder on U type guide rail (2) is at servo motor (1), drive wheel (10), big synchronizing wheel (14), little synchronizing wheel (9), the inside tire of U type inslot is arranged in the scanning under the effect of the driving system that hold-in range (11) and drive plate (7) are constituteed, because two parallel edges of U type support keep vertical and relative stillness with the rotation axis of testing tire during the installation, transmission shaft (15) axis and the same Z value in laser range finder facula center, so the U type scanning orbit coplane that the tire rotation axis is the same with laser range finder facula center, alright in this way establish laser range finder positional information and tire coordinate and be related.

Before testing, determining the scanning range of the laser range finder according to the radius of the tire bead of the tire, scanning the tire side, the tire shoulder and the tire surface by the laser range finder in the testing process, recording four parameters (r, w, theta and M) (at the moment, M is the distance measured by the range finder), and when the difference delta M between two monitoring values of the same coordinate is obtained>M_{Setting up}The area is monitored in an important manner to obtain damage process data of the area and research the damage type and process of tire damage.

Claims

1. A tire test process dynamic monitoring system which characterized in that: the system comprises a servo motor (1), a U-shaped guide rail (2), a U-shaped bracket (3), a coupler (4), a monitoring sensor (5), an angle encoder (6), a transmission steel plate (7), a rolling bearing (8), a small synchronous wheel (9), a driving wheel (10), a synchronous belt (11), a fixing screw hole (12), a tension wheel (13), a large synchronous wheel (14), a transmission shaft (15) and a PC (personal computer); the appearance of the system is U-shaped, a U-shaped guide rail (2) and a transmission system are respectively fixed on the front surface and the rear surface of a U-shaped bracket (3) in the Z direction, the transmission system comprises a driving wheel (10), a large synchronous wheel (14), a small synchronous wheel (9), a synchronous belt (11) and a transmission steel plate (7), the large synchronous wheel (14) is positioned at the bottom angle of the U-shaped bracket (3), the small synchronous wheel (9) is positioned on the long side edge of the U-shaped bracket and is opposite to the driving wheel (10), a tension wheel (13) is positioned at the inner ring of the synchronous belt (11), one end of the transmission steel plate (7) is fixed on the synchronous belt, the other end of the transmission steel plate is fixed on a sliding block of the U-shaped guide rail (2), the power of a servo motor (1) is output through the driving wheel (10) and is driven by the synchronous belt (11), the synchronous wheel (14), the, the tire placed in the groove of the U-shaped support (3) is scanned, the rotating shaft of the tire is coaxial with the transmission shaft (15), and the axle center of the transmission shaft (15) and the center of the signal source of the monitoring sensor (5) are positioned on the same Z-direction plane.

2. The dynamic tire testing process monitoring system of claim 1, wherein: the central contour line of the U-shaped guide rail is parallel to the U-shaped outer edge of the U-shaped support and is overlapped with the Z direction of a large U contour line formed by the belt back of the synchronous belt.

3. The dynamic tire testing process monitoring system of claim 1, wherein: the angle encoder (6) obtains the rotation angle information theta of the tire through the transmission shaft (15) and the coupler (4).

4. Dynamic monitoring system for tyre testing processes according to claim 1, characterised in that the transmission shaft (15) is fixed to the U-shaped support (3) by means of rolling bearings (8) and is perpendicular to the two parallel sides of the U-shaped support (3).

5. The dynamic monitoring system for tire testing process according to claim 1, wherein the PC samples information of revolution number through the servo motor (1), samples information of angle through the angle encoder (6), samples monitoring information through the monitoring sensor (5), and obtains information of point, line and plane of tire with different grid density by changing sampling time and sampling frequency.