CN214028071U - Engineering machinery tire abrasion sensor and engineering machinery tire - Google Patents
Engineering machinery tire abrasion sensor and engineering machinery tire Download PDFInfo
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- CN214028071U CN214028071U CN202021892998.8U CN202021892998U CN214028071U CN 214028071 U CN214028071 U CN 214028071U CN 202021892998 U CN202021892998 U CN 202021892998U CN 214028071 U CN214028071 U CN 214028071U
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Abstract
The utility model relates to an engineering machinery tire wear sensor and engineering machinery tire, the wear sensor includes abradable part, sensor main part, the abradable part includes supporter and flexible circuit board, the flexible circuit board inlays in the supporter and is connected with the sensor main part electricity; the flexible circuit board is formed into a stepped circuit by a plurality of leads at intervals from the top end to the bottom end of the flexible circuit board, and is electrically connected with the sensor main body. The utility model provides a be suitable for the wearing and tearing sensor that the special giant tire of engineering used utilizes the level principle to accomplish the real-time supervision of special giant tire wearing and tearing volume with more convenient, reliable mode, changes, the life-span prediction and the judgement of vehicle situation provides reliable basic data in time for the maintenance of special giant tire.
Description
Technical Field
The utility model relates to a tire monitoring sensor, in particular to an engineering machinery tire that is used for engineering machinery tire's tire wearing and tearing sensor and uses this sensor.
Background
The tyre belongs to a consumable part of a vehicle, the normal service life of the tyre is mainly reflected in the loss degree of a driving surface, and the service life and the safety are directly influenced. The wear of the tire can also reflect the state of the vehicle, such as the occurrence of eccentric wear, regular wear points uniformly distributed along the circumference, and the like, which indicate that the vehicle, the wheel axle and the wheel hub need to be adjusted. Particularly for the engineering machinery tire, due to the fact that the tire runs on a non-paved road surface, abnormal abrasion of the tire is easily caused on the uneven road surface; in addition, the road surface conditions are severe, sundries such as gravels with sharp edges often exist, and besides friction loss, the conditions of rubber block falling and the like caused by cutting and pricking exist, so that the service life of the tire is seriously influenced. Therefore, the method has great significance for users to know the abrasion condition of the tire in time in the using process of the engineering machinery tire. The off-the-road tire is a very large pneumatic tire having a rim nominal diameter of 33 inches or more and a nominal section width of 24 inches or more.
There are three ways to detect tread wear: one is to manually measure the pattern depth, and read and record manually through a pattern depth gauge or other tools; secondly, acquiring mileage and the number of revolutions of the tire by using a calculation mode, and acquiring the diameter change of the tire by using the calculation mode to obtain a wear value; the third is to acquire data using sensors. The technology for acquiring the abrasion loss data by using the sensor has more advantages, can avoid errors of manual measurement, reduce labor intensity and avoid size deviation caused by inflation pressure and load change of the tire diameter in a calculation mode.
The scheme description of the prior sensor technology is analyzed from available data, and the characteristics of the sensor structure are combined, so that the sensor technology for detecting the abrasion of the prior tire is mainly applied to car tires and truck and passenger car tires and is not suitable for ultra-large tires with large volume and wide and thick tire surfaces. In addition, although there is a resistance sensor that can be used in an extra large tire, it is susceptible to oil contamination and muddy water, and the resistivity is unstable, and the mounting method of the resistance sensor needs to penetrate the entire tire tread, and may damage the main steel wire layer and the belt steel wire layer of the tire, and thus, the extra large tire with high load and heavy load is likely to cause a trouble.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a tire wearing and tearing sensor and engineering machinery tire of engineering machinery tire.
The technical scheme of the utility model as follows:
a tyre abrasion sensor of engineering machinery tyre is characterized in that the sensor comprises an abradable component and a sensor main body,
the wearable part comprises a support body and a flexible circuit board, and the flexible circuit board is embedded in the support body and is electrically connected with the sensor main body;
the flexible circuit board is formed into a stepped circuit by a plurality of leads at intervals from the top end to the bottom end of the flexible circuit board, and is electrically connected with the sensor main body.
Preferably, one end of all the leads of the stepped circuit on the flexible circuit board is connected to a common lead, the other end of the leads is led out to the bottom of the flexible circuit board, and all the leads are connected to the sensor body.
Preferably, the sensor main body comprises a micro-processing unit, a wireless communication module, a signal processing module, a data conversion module, a battery and a peripheral circuit, all parts of the sensor main body are electrically connected, and the flexible circuit board is electrically connected with the sensor main body through an interface of the signal processing module.
Preferably, the supporting body is a rubber supporting body and consists of two parts which are matched with each other, a cylinder is formed outside the spliced supporting body, a section of cavity for accommodating the flexible circuit board is formed inside the cylindrical supporting body, and the shape of the flexible circuit board is matched and clamped and fixed.
It is preferable that the sensor body is mounted inside the housing, and the bottom of the support is embedded in the housing to form a columnar structure.
The arrangement number and the spacing size of the leads of the stepped circuit vary according to the size of the off-the-road tire and the thickness of the tread, and generally, the arrangement number of the leads of the stepped circuit is preferably 18-22, and the spacing size is preferably 4-6 mm.
Preferably, the support body accommodates the cavity of the flexible circuit board, and the lateral projection of the cavity is in a reciprocating bending, continuous W shape or sine wave shape, and the shape and the size of the cavity are matched with the bending flexible circuit board and are clamped and fixed with the bending flexible circuit board.
Preferably, the stepped circuit is a group of L-shaped conducting wires distributed in parallel, the short side of each conducting wire is perpendicular to the radial direction of the tire, the long side of each conducting wire is along the radial direction of the tire, the short sides are arranged at a set interval in the radial direction, one ends of all the short sides are connected with a common conducting wire extending to the bottom side of the flexible circuit board, and one end of each long side extends to the bottom side of the flexible circuit board independently.
Preferably, the outer surface is provided with annular, helical grooves or raised ridges.
The engineering machinery tire with the tire wear sensor is characterized in that the wear sensor is embedded in a pattern block of a tire tread and tightly combined with tread rubber, the axis of the wear sensor is arranged along the radial direction of the tire, a sensor main body is arranged in the tire tread, the top end of a wearable component is flush with the top of a tread pattern, and the wearable component is worn along with the wear of the tire tread in the using process.
The utility model has the advantages as follows:
the utility model provides a be suitable for the wearing and tearing sensor that the special giant tire of engineering used utilizes the level principle to accomplish the real-time supervision of special giant tire wearing and tearing volume with more convenient, reliable mode, changes, the life-span prediction and the judgement of vehicle situation provides reliable basic data in time for the maintenance of special giant tire.
1. By using the principle that opposite level signals can be formed by disconnection of circuits in a digital circuit, when a circuit with a plurality of wires has a wire which is disconnected after being consumed, the combined value of the level signals can be changed, so that the change of the abrasion amount of the tread is sensed.
One ends of all the leads on the flexible circuit board are connected together, the other ends of the leads are led out to the bottom of the flexible circuit board, one of the leads is a common lead, the rest leads are consumption leads, and all the leads are connected to a signal processing module of the sensor main body through an interface. Under the condition that the circuit is complete, when the signal processing module applies a high-level signal to the shared conducting wire, the same level signal can be obtained at the other end of each conducting wire; when the conductor is worn and disconnected, the other end of the corresponding conductor obtains a low level signal, the signal processing module compares the level of each conductor end of the flexible circuit board to obtain the on-off state of each conductor, and the data conversion module converts the level combination into a wear loss expression value according to the interval size of the conductor. The flexible circuit board can be a single-layer circuit or a multi-layer circuit.
The value of the interval size of the array reflects the stage wear value of the tire. When the tire is worn in running, the wearable part and the tire are worn synchronously, the conducting wires on the flexible circuit board are exposed and consumed sequentially along with the wear degree of the tire to form an open circuit, and the total wear amount of the tire is obtained after the wear values represented by the consumed conducting wires are accumulated.
The combination of logic level signals of the digital circuit reflects the connection and disconnection of the line, and possible interference of a resistive medium can be eliminated. The lead wires are exposed after the tire is worn, and when muddy water and other media exist, certain resistive connection can occur among the lead wires, certain interference can be formed on a resistive sensitive element, and the deviation of a feedback measurement result is caused. This patent adopts the mode data collection that level signal changes, through the scope of reasonable setting high, low level value, even have the circumstances of resistive nature connection between the wire that opens circuit, also can obtain with the same level state that opens circuit, avoids external environment to produce the influence to the data that the sensor acquireed.
2. The sensor is embedded in the tread of the tire, has no influence on the belted layer steel wire and the carcass main steel wire, and cannot cause the change of the performance of the tire.
3. The wearable part is made of rubber materials to support the flexible circuit board, and the flexible circuit board is made to form a continuous reciprocating bending shape in advance, so that the flexible circuit board can generate predictable deformation when the tire is deformed under pressure, and the damage of a circuit caused by uncontrollable deformation is avoided. Compared with the material of the tire tread, the material adopting the rubber support has a slightly smaller elastic modulus, so that the rubber support can deform synchronously with the tire tread.
4. The device is provided with an independent wireless communication module and can directly transmit data to a vehicle-mounted receiving device or a handheld device.
5. The sensor has complete functions and can be independently installed without installing other auxiliary components on the tire.
6. The cavity for accommodating the flexible circuit board has a reciprocating bent, continuous W-shaped or sine wave-shaped lateral projection, and the shape and the size of the cavity are matched with those of the bent flexible circuit board and form clamping fixation. By adopting the structure, the impact on the flexible circuit board and the sensor main body in the rolling process of the tire can be buffered, and the damage of the flexible circuit board and the fault of connection between the flexible circuit board and the sensor main body, which are caused by the impact, are avoided.
7. Set up annular, spiral helicine recess or bellied crest line at the cylindricality surface of sensor, can increase the area of contact of sensor and tire, be favorable to improving the firm degree of installation.
In a word, the utility model discloses utilize level signal change to gather wear data, avoid the external disturbance factor that current sensor technology exists, for the management of special giant tire provides suitable wearing and tearing volume data acquisition part, be favorable to the life-span prediction and the use management of tire to judge for vehicle state and provide basic data.
Drawings
FIG. 1: a block diagram of a system architecture of the sensor,
FIG. 2: example 1 a schematic view of the structure of the device,
FIG. 3: the flexible wiring board in example 1 is schematically shown,
FIG. 4: example 1 a schematic cross-section of a mounted tire,
FIG. 5: an enlarged partial schematic view of I of figure 4,
the various reference numbers in the figures are listed below:
1-housing, 2-sensor body, 3-rubber support, 4-flexible circuit board, 5-common conductor, 6-short side of consumption conductor, 7-long side of consumption conductor, 11-base rubber, 12-tyre belt, 13-tread pattern block, 14-tyre toe opening.
Detailed Description
For a better understanding of the present invention, the following further explanation is made in conjunction with the accompanying drawings and specific embodiments.
Example 1
The embodiment realizes a wear sensor for a tyre of engineering machinery, namely an extra giant tyre with the tyre specification of 59/80R63, and the system structure block diagram of the wear sensor is shown in figure 1. The specific structure is shown in fig. 2, which comprises a sensor main body 2, a housing 1 and a wearable part, wherein the wearable part comprises a rubber support body 3 and a flexible circuit board 4.
The sensor main body 2 is arranged inside the shell 1, and the rubber supporting body 3 and the shell 1 form embedded connection to form a columnar structure. The flexible circuit board 4 is electrically connected with the sensor main body 1 through an interface of the signal processing module. The rubber supporting body 3 is composed of two parts which are matched with each other, a cylinder is formed outside after splicing, the flexible circuit board 4 is clamped and fixed by utilizing a cavity in the middle, and the flexible circuit board is made to form a continuous W shape which is bent in a reciprocating way.
The circuit of the flexible printed circuit 4 is shown in fig. 3, and the consumption leads are formed by a group of "L-shaped" copper foil leads distributed in parallel, short sides 6 of each consumption lead perpendicular to the radial direction of the tire are arranged according to a set distance, the arrangement number and the spacing size of the consumption leads are changed according to the size of the engineering machinery tire and the thickness of the tread, generally, the tire model of the embodiment is preferably about 20 in arrangement number and about 5mm in spacing. One end of each short side is connected with a common lead 5 extending to the bottom edge of the flexible circuit board, and one end of a long side 7 of a consumption lead in the tire radial direction extends to the bottom edge of the flexible circuit board independently. All wires are connected at the bottom side by an interface to the signal processing module of the sensor body 2. The short sides 6 of the consumable conductors form a stepped circuit according to a set number and spacing size, each conductor represents a wear value, and the spacing size value of the array reflects the stage wear value of the tire.
The wearing sensors are embedded in the pattern blocks of the tire tread and tightly combined with the tread rubber, the axes of the wearing sensors are arranged along the radial direction of the tire, the sensor main body 2 is arranged in the tire tread, the top end of the wearable part is flush with the top of the tread pattern 13, and the wearing sensors are worn along with the abrasion of the tire tread in the using process as shown in fig. 4 and 5.
The bottom of the wear sensor is above the base rubber 11 of the tread, and there is no influence on the structural performance of the tire belt layer 12.
During use, the short side 6 of the consumable wire as shown in fig. 3 is damaged from one wire to the next as the tire wears. When it is damaged, the corresponding wire becomes an open circuit state. When the signal processing module applies a high level signal to the common conductor 5, the disconnected conductor in the signal processing module corresponds to a low level. And accumulating the obtained combination of the low-level signals and the corresponding distance between the short sides 6 of the consumption conducting wire to obtain the specific numerical value of the tread wear. Further, the height of the residual tread pattern can be obtained.
Claims (9)
1. The tire wear sensor for engineering machinery tire is characterized by comprising a wearable part, a sensor main body and a shell
The wearable part comprises a support body and a flexible circuit board, and the flexible circuit board is embedded in the support body and is electrically connected with the sensor main body;
the flexible circuit board is formed into a stepped circuit by a plurality of leads at intervals from the top end to the bottom end of the flexible circuit board and is electrically connected with the sensor main body,
the sensor main body is installed inside the shell, and the bottom of the supporting body is embedded into the shell to form a columnar structure.
2. The wear sensor of claim 1, wherein all of the conductors of the stepped circuit on the flex circuit board are connected at one end to a common conductor and at the other end lead out to the bottom of the flex circuit board, all of the conductors being connected to the sensor body.
3. The wear sensor of claim 1, wherein the sensor body includes a microprocessor unit, a wireless communication module, a signal processing module, a data conversion module, a battery, and peripheral circuitry, the sensor body having electrical connections on portions thereof, the flexible circuit board being electrically connected to the sensor body via an interface of the signal processing module.
4. The wear sensor of claim 1, wherein the support is a rubber support, and comprises two parts that fit together to form a cylinder on the outside and a cavity on the inside that receives the flexible circuit board, matching the shape of the flexible circuit board and clamping the flexible circuit board.
5. The wear sensor according to claim 1, wherein the number of the wires of the stepped circuit is 18-22, and the spacing dimension is 4-6 mm.
6. The wear sensor of claim 1, wherein the support body receives the cavity of the flexible circuit board with a lateral projection that is a reciprocating curved, continuous "W" shape or sinusoidal wave shape that is shaped and sized to mate with and clamp to the curved flexible circuit board.
7. The wear sensor of claim 1, wherein the stepped circuit is a set of parallel "L-shaped" wires, each wire having a short side perpendicular to the radial direction of the tire, a long side along the radial direction of the tire, the short sides being arranged at a predetermined distance from each other in the radial direction, one end of each short side being connected to a common wire extending to the bottom edge of the flexible printed circuit board, and one end of each long side extending to the bottom edge of the flexible printed circuit board.
8. The wear sensor according to claim 1, wherein the outer surface is provided with annular, spiral grooves or raised ridges.
9. An off-the-road tire having a tire wear sensor as claimed in any one of claims 1 to 8, wherein the wear sensor is embedded in a block of the tire tread and is tightly bonded to the tread rubber, the axis of the wear sensor is arranged in the radial direction of the tire, the sensor body is disposed inside the tread, and the top end of the abradable member is flush with the top of the tread pattern and is worn away as the tire tread wears during use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021892998.8U CN214028071U (en) | 2020-09-02 | 2020-09-02 | Engineering machinery tire abrasion sensor and engineering machinery tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021892998.8U CN214028071U (en) | 2020-09-02 | 2020-09-02 | Engineering machinery tire abrasion sensor and engineering machinery tire |
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| Publication Number | Publication Date |
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| CN214028071U true CN214028071U (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193978A (en) * | 2020-09-02 | 2022-03-18 | 北京多贝力轮胎有限公司 | Engineering machinery tire abrasion sensor and engineering machinery tire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193978A (en) * | 2020-09-02 | 2022-03-18 | 北京多贝力轮胎有限公司 | Engineering machinery tire abrasion sensor and engineering machinery tire |
| CN114193978B (en) * | 2020-09-02 | 2024-05-28 | 北京多贝力轮胎有限公司 | Engineering machinery tyre abrasion sensor and engineering machinery tyre |
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