Automatic cleaning device for stone clamped on tire tread of rubber-tyred vehicle

Abstract

The invention discloses a rubber-tyred vehicle tire tread stone automatic cleaning device which is mounted on a frame of a rubber-tyred vehicle, is arranged corresponding to the position of a tire tread, and comprises a mounting bracket, a cleaning mechanism, a driving mechanism and a control unit. And the mounting bracket is fixed on a frame of the rubber-tyred vehicle. The cleaning mechanism comprises a movable arm and a stone remover, one end of the movable arm is hinged to the mounting support, the other end of the movable arm is connected with the stone remover, and a pressure sensor acting on the tire tread is arranged on the stone remover. And the driving mechanism is in transmission connection with the movable arm and is used for driving the movable arm to swing around the hinge point so as to adjust the fitting angle and pressure of the stone remover and the tire tread. The position and pressure of the cleaning mechanism can be adjusted in real time, the cleaning teeth can be kept in the optimal working state no matter tire abrasion or load changes or stones are different in size, and the cleaning effect is improved; and through mutual cooperation of the multi-tooth structure and the air nozzles, the clamping stone removing effect can be further improved.

Description

Technical Field

[0001] This invention belongs to the field of vehicle auxiliary equipment technology, specifically relating to an automatic stone removal device for rubber-wheeled vehicle tire treads. Background Technology

[0002] Rubber-tired vehicles (such as mining dump trucks, loaders, and beam transporters) typically operate in harsh environments filled with gravel. The tread grooves of their tires easily embed and trap sharp stones. These stones are subjected to intense compression and abrasion during vehicle movement, which can puncture the tire tread, causing air leaks, and damage the tire cords, significantly shortening the tire's lifespan. Furthermore, stones ejected by the high-speed rotation of the tire can strike following vehicles or people on the roadside, causing serious property damage and accidents.

[0003] Currently, the most common method is manual cleaning, where drivers or mechanics use tools such as crowbars to manually remove the stones. This method is not only labor-intensive and inefficient, but also difficult to perform while the vehicle is in motion, making real-time cleaning impossible. Some stone removal devices exist on the market, such as the heavy equipment tire stone removal device disclosed in patent CN206297352U. However, this mainly targets the removal of stones between tires and does not address the problem of stones embedded in the tire tread. Existing tire cleaning devices are mostly fixed scrapers, which cannot adaptively adjust the pressure according to tire wear or the tightness of the stones, easily damaging the tire due to excessive pressure or failing to remove stones completely due to insufficient pressure. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic stone removal device for rubber-tired vehicle tire treads, so as to solve the problems of poor adjustability and poor performance of existing equipment.

[0005] To achieve the above objectives, the present invention provides an automatic stone removal device for rubber-wheeled vehicle tire treads, which is installed on the frame of the rubber-wheeled vehicle and positioned corresponding to the tread position of the tires, and includes a mounting bracket, a cleaning mechanism, a drive mechanism, and a control unit.

[0006] The mounting bracket is fixed to the frame of the rubber-tired vehicle. The cleaning mechanism includes a movable arm and a stone remover. One end of the movable arm is hinged to the mounting bracket, and the other end is connected to the stone remover. The stone remover is equipped with a pressure sensor that acts on the tire tread. The drive mechanism is kinetically connected to the movable arm and is used to drive the movable arm to swing around the hinge point to adjust the contact angle and pressure between the stone remover and the tire tread. The control unit is electrically connected to both the pressure sensor and the drive mechanism, and is used to receive signals from the pressure sensor and control the operation of the drive mechanism according to a preset pressure threshold.

[0007] In one or more embodiments of the present invention, the stone remover includes a base and a pair of cleaning teeth, the base being connected to the end of the movable arm away from the mounting bracket, and the cleaning teeth being detachably connected to the base.

[0008] In one or more embodiments of the present invention, the cleaning tooth row is made of a high-toughness wear-resistant material, and the side of the tooth that contacts the tire is provided with a plurality of cleaning teeth distributed along the width direction of the tire.

[0009] In one or more embodiments of the present invention, the cleaning teeth have a trapezoidal or triangular cross-section and a rounded corner at the top.

[0010] In one or more embodiments of the present invention, the bottom of the groove between an adjacent pair of cleaning teeth is provided with a stone discharge hole that penetrates the cleaning tooth row.

[0011] In one or more embodiments of the present invention, the stone remover further includes a stone removal plate and an auxiliary air nozzle, a pair of cleaning tooth rows are symmetrical about the stone removal plate, the auxiliary air nozzle is located on the side of the cleaning tooth rows, the auxiliary air nozzle is connected to a vehicle air source through a pipeline, and the pipeline is equipped with a solenoid valve controlled by the control unit.

[0012] In one or more embodiments of the present invention, the driving mechanism includes a linear driving element and a connecting rod, one end of the linear driving element is hinged to the mounting bracket, its movable part is hinged to the connecting rod, and the connecting rod is hinged to the middle of the movable arm.

[0013] In one or more embodiments of the present invention, a return spring is provided at the hinge point between the movable arm and the connecting rod. The return spring is connected to the mounting bracket and is used to pull the movable arm back to the initial position away from the tire when the drive mechanism fails.

[0014] In one or more embodiments of the present invention, the control unit includes a signal acquisition module, a data processing module, and a drive control module. The signal acquisition module is used to receive signals from the pressure sensor and / or the angle sensor. The data processing module is used to compare the received signals with a preset threshold. The drive control module is used to issue control commands to the drive mechanism based on the comparison result.

[0015] In one or more embodiments of the present invention, the mounting bracket is further provided with an angle sensor, which corresponds to the movable arm and is used to detect the swing angle of the movable arm and transmit the angle signal to the control unit in real time.

[0016] Compared with the prior art, the beneficial effects of the present invention are that it can adjust the position and pressure of the cleaning mechanism in real time, and can keep the cleaning teeth in the best working state regardless of tire wear, load changes or different stone sizes, thereby improving the cleaning effect; through the cooperation of the multi-tooth structure and the air nozzle, the removal effect of stuck stones can be further improved. Attached Figure Description

[0017] Figure 1 This is a first perspective view of an automatic stone-removing device for rubber-tired vehicle tire treads according to an embodiment of the present invention.

[0018] Figure 2 This is a second perspective view of an automatic stone-removing device for rubber-tired vehicle tire treads according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure at point B;

[0021] Figure 5 This is a third-angle perspective view of an automatic stone-removing device for rubber-tired vehicle tire treads according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 Schematic diagram of the structure at point C;

[0023] Figure 7 This is a front view of an automatic stone-removing device for rubber-tired vehicle tire treads according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the control unit structure in one embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 1. Mounting bracket; 2. Cleaning mechanism; 201. Movable arm; 202. Stone remover; 2021. Base; 2022. Cleaning tooth row; 20221. Cleaning tooth; 20222. Stone removal hole; 2023. Stone removal slab; 2024. Auxiliary air nozzle; 3. Drive mechanism; 301. Linear drive element; 302. Connecting rod; 4. Return spring. Detailed Implementation

[0027] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0028] like Figures 1 to 8As shown, an automatic stone-removing device for rubber-tired vehicle tires according to one embodiment of the present invention is installed on the frame of the rubber-tired vehicle, corresponding to the tire tread position. It includes a mounting bracket 1, a cleaning mechanism 2, a drive mechanism 3, and a control unit. The mounting bracket 1 is fixed to the frame of the rubber-tired vehicle by bolts or welding. The cleaning mechanism 2 includes a movable arm 201 and a stone remover 202. One end of the movable arm 201 is hinged to the mounting bracket 1 via a pin, allowing it to swing around the pin in a vertical plane. The other end is connected to the stone remover 202, which is equipped with a pressure sensor acting on the tire tread. The drive mechanism 3 is drively connected to the movable arm 201, driving the movable arm 201 to swing around the hinge point to adjust the contact angle and pressure between the stone remover 202 and the tire tread. The control unit is electrically connected to both the pressure sensor and the drive mechanism 3, receiving signals from the pressure sensor and controlling the operation of the drive mechanism 3 according to a preset pressure threshold.

[0029] This application uses a pressure sensor to monitor the contact pressure between the stone remover 202 and the tire in real time. The control unit automatically adjusts the angle and pressure accordingly, which can not only ensure effective removal of stones, but also prevent excessive pressure from damaging the tire. This achieves automation and self-adaptation of the cleaning process, avoiding the tediousness and safety hazards of manual operation.

[0030] The pressure sensor is a thin-film pressure sensor, which is embedded between the base 2021 of the destone remover 202 and the cleaning tooth row 2022, and is connected to the control unit via a cable.

[0031] like Figures 1 to 8 As shown, the stone remover 202 includes a base 2021 and a pair of cleaning teeth 2022. The base 2021 is connected to the end of the movable arm 201 away from the mounting bracket 1, and the cleaning teeth 2022 are detachably connected to the base 2021.

[0032] Specifically, the base 2021 and the movable arm 201 are fixed by bolts, and the cleaning toothed rack 2022 is installed on the base 2021 by a dovetail groove slide rail structure and is positioned by locking screws.

[0033] When a section of the cleaning tooth 2022 is damaged due to wear or accidental impact, the separate design of the cleaning tooth 2022 means that the entire cleaning tooth 2022 does not need to be replaced. Only the corresponding section unit needs to be replaced, which can reduce the cost of use. The section structure is also more suitable for tires of different widths.

[0034] In this embodiment, the cleaning tooth row 2022 is made of a high-toughness, wear-resistant material, such as polyurethane or wear-resistant alloy steel. Multiple cleaning teeth 20221, distributed along the width of the tire, are integrally formed on the side that contacts the tire. This design allows for periodic replacement of the cleaning tooth row 2022, reducing maintenance costs and replacement difficulty. Simultaneously, the cleaning teeth 20221 can effectively embed into the tire tread grooves, applying external force to pry out stones stuck in the tire, thus improving the cleaning effect.

[0035] Optionally, the cleaning teeth 20221 have a trapezoidal or triangular cross-section with rounded corners at the top. The trapezoidal or triangular teeth provide better engagement, and the rounded corners prevent damage to the tire.

[0036] like Figures 5 to 6 As shown, the bottom of the groove between adjacent pairs of cleaning teeth 20221 is provided with a stone discharge through hole 20222 that penetrates the cleaning tooth row 2022. The stone discharge through hole 20222 allows the pried-out stones to fall directly through the cleaning tooth row 2022, preventing stones from getting stuck between the cleaning teeth 20221 and causing secondary wear or cleaning failure.

[0037] like Figures 1 to 8 As shown, the stone remover 202 also includes a stone removal plate 2023 and an auxiliary air nozzle 2024. A pair of cleaning tooth rows 2022 are symmetrical about the stone removal plate 2023, and the auxiliary air nozzle 2024 is located to the side of the cleaning tooth rows 2022. The auxiliary air nozzle 2024 is connected to an on-board air source, such as an air tank, via a pipeline, and a solenoid valve controlled by a control unit is installed on the pipeline.

[0038] When cleaning the tire tread with the cleaning tooth 2022, the stone slab 2023 can be placed between the moving tires to remove stones stuck between them. For stones that are severely stuck or have been loosened but not fallen off, high-pressure airflow can be used to blow them away from the tires, which can assist in the cleaning process. At the same time, it can also remove the dust accumulated on the cleaning tooth 2022 and maintain the sharpness of the cleaning teeth 20221.

[0039] like Figures 2 to 6 As shown, the drive mechanism 3 includes a linear drive element 301 and a connecting rod 302. One end of the linear drive element 301 is hinged to the mounting bracket 1, and its movable part is hinged to the connecting rod 302. The connecting rod 302 is hinged to the middle of the movable arm 201.

[0040] The drive mechanism 3 in this application can smoothly convert linear motion into the swing of the movable arm 201. It has a simple and reliable structure, high transmission efficiency, and can achieve self-locking in the non-working state by utilizing the dead point position of the connecting rod 302 to prevent accidental contact.

[0041] Optionally, the drive mechanism 3 can be an electric push rod or a hydraulic cylinder. Preferably, the drive mechanism 3 is an electric push rod, the tail of which is hinged to the mounting bracket 1, and the end of its telescopic rod is hinged to the connecting rod 302. In this way, the telescopic movement of the electric push rod can drive the movable arm 201 to swing, thereby adjusting the contact pressure between the stone remover 202 and the tire.

[0042] like Figure 7 As shown, a return spring 4 is provided at the hinge point between the movable arm 201 and the connecting rod 302. The return spring 4 is connected to the mounting bracket 1 and is used to pull the movable arm 201 back to the initial position away from the tire when the drive mechanism 3 fails.

[0043] When the vehicle loses power or the drive mechanism 3 malfunctions, the reset spring 4 can automatically pull the cleaning mechanism 2 back to a safe position, preventing it from continuously contacting the tire and causing accidental wear or driving resistance, thus significantly improving driving safety.

[0044] like Figure 8 As shown, the control unit includes a signal acquisition module, a data processing module, and a drive control module. The signal acquisition module receives signals from the pressure sensor and / or angle sensor. The data processing module compares the received signals with preset thresholds. The drive control module issues control commands to the drive mechanism 3 based on the comparison results.

[0045] The signal acquisition module receives signals from the pressure sensor and the angle sensor. The data processing module has preset upper and lower pressure limits. The drive control module sends commands to the drive mechanism 3 to extend, retract, or stop based on the comparison results.

[0046] In addition, the preset thresholds include an upper pressure limit and a lower pressure limit. By setting the upper and lower pressure limits, when the pressure is below the lower limit, the drive mechanism 3 advances to maintain contact. When the pressure is above the upper limit, the drive mechanism 3 retracts to prevent the tire from bursting, forming a dynamic constant pressure control logic that ensures the safety and efficiency of the cleaning process.

[0047] In addition, the mounting bracket 1 is also equipped with an angle sensor, which corresponds to the movable arm 201. The angle sensor is used to detect the swing angle of the movable arm 201 and transmit the angle signal to the control unit in real time. The control unit can obtain the precise position of the movable arm 201 in real time, realize precise control, make the adjustment of the cleaning mechanism 2 more accurate, and at the same time monitor whether the cleaning mechanism 2 is displaced due to external force, thus improving the overall reliability.

[0048] To ensure effective cleaning of the tire surfaces, two sets of the device are installed, one for the front wheels and one for the rear wheels. Both sets share a single control unit, which is centrally controlled by a master switch inside the driver's cab. This allows for unified management and control of all tires on the vehicle, enabling the driver to operate the system with a single button from inside the cab, simplifying the process and enhancing the overall intelligent integration of the vehicle.

[0049] In practical use, when the vehicle is driving on complex road surfaces, the driver activates the automatic cleaning function from inside the cab. The control unit first controls the extension of the electric push rod based on the signal from the angle sensor, bringing the stone remover 202 closer to the tire. When the cleaning teeth 20221 contact the tire tread, and the pressure value detected by the pressure sensor reaches the preset lower limit, the electric push rod stops advancing, and the device enters its working state. As the tire rotates, the cleaning teeth 20221 continuously engage with the tread grooves, loosening or directly removing stuck stones. Most of the pried-out stones fall through the stone discharge hole 20222, preventing them from getting stuck between the cleaning teeth 20221.

[0050] When encountering a particularly large, tightly stuck stone, the localized pressure between the cleaning teeth 20221 and the tire tread will increase sharply for a short period. Once the pressure sensor detects that the pressure exceeds the upper limit, the control unit will immediately instruct the electric push rod to retract slightly to reduce the contact pressure and prevent damage to the tire. After the large stone is removed, the pressure returns to normal, and the electric push rod advances again to maintain the cleaning effect. This dynamic adjustment enables continuous, safe, and efficient automatic stone removal.

[0051] In addition, when the control unit detects that the drive mechanism 3 operates frequently or the pressure fluctuates greatly, it will instruct the solenoid valve to open briefly, using high-pressure airflow to assist in blowing the tire surface and cleaning the grooves of the teeth 20221, which greatly improves the removal efficiency of stubborn stones.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic stone-removing device for rubber-wheeled vehicle tire treads, installed on the frame of the rubber-wheeled vehicle and positioned corresponding to the tire tread position, characterized in that, include: Mounting brackets are used to secure the vehicle to the frame of the rubber-wheeled vehicle. The cleaning mechanism includes a movable arm and a stone remover. One end of the movable arm is hinged to the mounting bracket, and the other end is connected to the stone remover. The stone remover is equipped with a pressure sensor that acts on the tire tread. The drive mechanism is connected to the movable arm and is used to drive the movable arm to swing around the hinge point to adjust the contact angle and pressure between the stone remover and the tire tread. The control unit is electrically connected to both the pressure sensor and the drive mechanism, and is used to receive signals from the pressure sensor and control the operation of the drive mechanism according to a preset pressure threshold.

2. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 1, characterized in that, The stone remover includes a base and a pair of cleaning teeth, the base being connected to the end of the movable arm away from the mounting bracket, and the cleaning teeth being detachably connected to the base.

3. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 2, characterized in that, The cleaning tooth row is made of a high-toughness and wear-resistant material, and its side in contact with the tire has multiple cleaning teeth distributed along the width of the tire.

4. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 3, characterized in that, The cleaning teeth have a trapezoidal or triangular cross-section and rounded corners at the top.

5. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 4, characterized in that, The bottom of the groove between an adjacent pair of cleaning teeth is provided with a stone discharge hole that penetrates the cleaning tooth row.

6. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 2, characterized in that, The stone remover also includes a stone removal plate and an auxiliary air nozzle. A pair of cleaning teeth are symmetrical about the stone removal plate. The auxiliary air nozzle is located on the side of the cleaning teeth. The auxiliary air nozzle is connected to the vehicle air source through a pipeline. The pipeline is equipped with a solenoid valve controlled by the control unit.

7. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 1, characterized in that, The drive mechanism includes a linear drive element and a connecting rod. One end of the linear drive element is hinged to the mounting bracket, and its movable part is hinged to the connecting rod. The connecting rod is hinged to the middle of the movable arm.

8. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 7, characterized in that, A return spring is provided at the hinge point between the movable arm and the connecting rod. The return spring is connected to the mounting bracket and is used to pull the movable arm back to its initial position away from the tire when the drive mechanism fails.

9. The automatic stone-removing device for rubber-tired vehicle tire treads according to claim 1, characterized in that, The control unit includes: The signal acquisition module is used to receive signals from the pressure sensor and / or angle sensor; The data processing module is used to compare the received signal with a preset threshold. The drive control module is used to issue control commands to the drive mechanism based on the comparison results.

10. An automatic stone-removing device for rubber-tired vehicle tire treads according to claim 1, characterized in that, The mounting bracket is also equipped with an angle sensor, which corresponds to the movable arm and is used to detect the swing angle of the movable arm and transmit the angle signal to the control unit in real time.

Images