Remote control exhaust spark arrester and control method thereof

Abstract

This application discloses a remote-controlled exhaust spark arrester and its control method, relating to the field of hazardous chemical exhaust technology for commercial vehicles. It includes: a butterfly valve installed on the exhaust pipe, comprising a rotating shaft and a valve plate fixed in the same plane. The valve plate can be used to close the exhaust pipe. The axis of the rotating shaft is perpendicular to the axis of the exhaust pipe, and one end of the rotating shaft extends outward through the exhaust pipe; a sheet-shaped rotary switch, one end of which is vertically fixed to the extended end of the rotating shaft; and an electric cylinder, the telescopic end of which is hinged to the other end of the rotary switch. The telescopic end of the electric cylinder is used to drive the valve plate to rotate via the rotary switch and the rotating shaft. The electric cylinder is connected to the vehicle ECU via a signal line. The exhaust spark arrester and its control method of this application solve the technical problem that traditional exhaust spark arresters require manual operation from the driver's cab, which is inconvenient.

Description

Technical Field

[0001] This application relates to the field of hazardous chemical exhaust technology for commercial vehicles, specifically to a remote-controlled exhaust spark extinguisher and its control method. Background Technology

[0002] According to national standards, all commercial vehicles must be equipped with exhaust spark arresters. When the exhaust pipe temperature is too high or before the vehicle enters a dangerous area, the driver must manually control the spark arrester butterfly valve to reduce or prevent the generation of exhaust sparks. After the vehicle temperature drops or the vehicle leaves the dangerous area, the driver must manually open the spark arrester butterfly valve to reduce exhaust back pressure and reduce fuel consumption.

[0003] In related technologies, the structure of an exhaust spark extinguisher is as follows: Figure 1 As shown, a manual mechanical linkage control method is adopted. The butterfly valve of the exhaust spark extinguisher is located inside the exhaust pipe 1. The handle 3 is connected to and controls the opening or closing of the butterfly valve in the exhaust pipe 1 through the pull rod assembly 2. In actual operation, the handle 3 is manually pushed or pulled to move the pull rod assembly 2, thereby opening and closing the butterfly valve of the spark extinguisher.

[0004] However, due to regulations, exhaust spark arresters can only be installed at the end furthest from the passenger compartment. Figure 1 The exhaust spark arrestor is installed below the gearbox or engine flywheel housing, making it very inconvenient to operate from the outside. Although the addition of the lever assembly 2 allows operation from the outside of the vehicle, it still requires getting in and out of the cab, bending over, and there is no active reminder or feedback after operation, making it impossible to determine whether the butterfly valve is fully open or closed. This leads to safety hazards during vehicle operation and does not meet the requirements for hazardous chemical transportation. Summary of the Invention

[0005] In view of the deficiencies in the existing technology, the purpose of this application is to provide a remote-controlled exhaust spark extinguisher and its control method, so as to solve the technical problem that the traditional exhaust spark extinguisher requires manual operation from the driver's cab and is inconvenient to operate.

[0006] To achieve the above objectives, the technical solution adopted is: a remote-controlled exhaust spark extinguisher, comprising:

[0007] The butterfly valve installed on the exhaust pipe includes a rotating shaft and a valve plate fixed in the same plane. The valve plate can be used to close the exhaust pipe. The axis of the rotating shaft is perpendicular to the axis of the exhaust pipe, and one end of the rotating shaft extends outward through the exhaust pipe.

[0008] A rotary switch in the shape of a sheet, one end of which is vertically fixed to the protruding end of the rotating shaft;

[0009] An electric cylinder has its telescopic end hinged to the other end of a rotary switch; the telescopic end of the electric cylinder is used to drive the valve plate to rotate via the rotary switch and the rotating shaft; the electric cylinder is connected to the vehicle ECU via a signal line.

[0010] Based on the above technical solution, the exhaust spark arrester also includes a temperature sensor installed inside the exhaust pipe, an automatic control switch and a manual control switch installed in the driver's cab, all of which are connected to the vehicle ECU. The temperature sensor is used to monitor the temperature inside the exhaust pipe in real time, and only one of the automatic control switch and the manual control switch can be turned on at the same time. The automatic control switch is used to determine whether to automatically control the opening and closing of the butterfly valve of the exhaust spark arrester through a combination of the vehicle ECU and the temperature sensor. The manual control switch is used to directly control the opening and closing of the butterfly valve of the exhaust spark arrester.

[0011] Based on the above technical solution, when the automatic control switch is turned on, the vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to a first threshold. If so, the vehicle ECU controls the electric cylinder to close the butterfly valve through a rotary switch. After the butterfly valve is closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to a second threshold. If so, the vehicle ECU controls the electric cylinder to open the butterfly valve.

[0012] Based on the above technical solution, when the manual control switch is turned on, the vehicle ECU controls the electric cylinder to close the butterfly valve via a rotary switch; when the manual control switch is turned off, the vehicle ECU controls the electric cylinder to open the butterfly valve via a rotary switch.

[0013] Based on the above technical solution, when the extended end of the electric cylinder extends according to the set stroke, the butterfly valve closes; when the extended end of the electric cylinder retracts according to the set stroke, the butterfly valve opens; the electric cylinder also includes a display harness, which is connected to the cab display; when the electric cylinder is opened and performs an extension or retraction movement, the cab display shows whether the fire stop is on or off.

[0014] Based on the above technical solution, the butterfly valve also includes a valve body 202, which is sealed to the inner wall of the exhaust pipe. The valve body has a circular hole, and the valve plate is rotatably disposed in the circular hole of the valve body via a rotating shaft. When the valve plate and the valve plate are coplanar, the butterfly valve is closed, and the valve plate and the valve plate seal the exhaust pipe.

[0015] Based on the above technical solution, the side of the electric cylinder is tightly fixed to the base plate, and the base plate is vertically arranged below the vehicle's pedal; the exhaust spark extinguisher also includes a piston guide rod, and the piston guide rod is coaxially fixed to the telescopic end of the electric cylinder; one end of the piston guide rod is fixed to the telescopic end of the electric cylinder, and the other end is hinged to the end of the rotary switch.

[0016] The exhaust spark arrester also includes a vertical bracket, a horizontal bracket, and a soft pad. The horizontal bracket is fixed to the front lower protective bracket of the vehicle. The top of the vertical bracket is fixed to the horizontal bracket by the soft pad, and the bottom of the vertical bracket is fixed to the exhaust pipe by a clamp.

[0017] This application also discloses a control method for the above-mentioned exhaust spark arrester. The exhaust spark arrester further includes a temperature sensor disposed in the exhaust pipe, an automatic control switch disposed in the driver's cab, and a manual control switch. The temperature sensor, the automatic control switch, and the manual control switch are all connected to the vehicle ECU. The temperature sensor is used to monitor the temperature in the exhaust pipe in real time, and only one of the automatic control switch and the manual control switch can be turned on at the same time.

[0018] The control method includes the following steps:

[0019] When the automatic control switch is turned on, the exhaust spark arrester is automatically controlled. The vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to the first threshold. If so, the vehicle ECU controls the electric cylinder to start, and the extension end of the electric cylinder drives the rotating shaft to rotate via the knob switch, closing the valve plate. If not, temperature monitoring continues. After the valve plate has been closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to the second threshold. If so, the vehicle ECU controls the electric cylinder to start, and the extension end of the electric cylinder drives the rotating shaft to rotate via the knob switch, opening the valve plate. If not, the valve plate remains closed.

[0020] When the manual control switch is turned on, the vehicle ECU controls the electric cylinder to start, and the extension end of the electric cylinder drives the rotating shaft to rotate via the knob switch, closing the valve plate; when the manual control switch is turned off, the vehicle ECU controls the electric cylinder to start, and the extension end of the electric cylinder drives the rotating shaft to rotate via the knob switch, opening the valve plate.

[0021] Based on the above technical solution, when the extended end of the electric cylinder extends according to the set stroke, the butterfly valve closes; when the extended end of the electric cylinder retracts according to the set stroke, the butterfly valve opens; the electric cylinder also includes a display harness, which is connected to the cab display; when the electric cylinder is opened and performs an extension or retraction movement, the cab display shows whether the fire stop is on or off.

[0022] Based on the above technical solution, the butterfly valve also includes a valve body 202, which is sealed to the inner wall of the exhaust pipe. The valve body has a circular hole, and the valve plate is rotatably disposed in the circular hole of the valve body via a rotating shaft. When the valve plate and the valve plate are coplanar, the butterfly valve is closed, and the valve plate and the valve plate seal the exhaust pipe.

[0023] The beneficial effects of the technical solution provided in this application include:

[0024] 1. The remote-controlled exhaust spark arrester of this application, by setting an electric cylinder in conjunction with a butterfly valve, can realize the function of closing or not closing the exhaust pipe; at the same time, it does not require getting out of the driver's cab, and can be remotely operated through the vehicle ECU, which is convenient and greatly improves the driving experience.

[0025] 2. The automatic remote control mode of the exhaust spark arrester in this application, when the automatic control switch is turned on, the vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to a first threshold. If so, the vehicle ECU controls the electric cylinder to close the butterfly valve; if not, the temperature sensor continues to monitor the temperature. After the butterfly valve is closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to a second threshold. If so, the vehicle ECU controls the electric cylinder to open the butterfly valve; if not, the butterfly valve remains closed for a period of time. The automatic remote control mode of the exhaust spark arrester in this application, with its cleverly designed control logic, achieves automatic remote control, effectively preventing excessive exhaust pipe temperature and improving the overall vehicle safety performance.

[0026] 3. The manual remote control mode of the exhaust spark arrester in this application allows the on-board ECU to control the electric cylinder to close the butterfly valve via a rotary switch when the manual control switch is on; conversely, when the manual control switch is off, the on-board ECU controls the electric cylinder to open the butterfly valve via a rotary switch. This direct manual remote control mode can be specifically applied when entering a hazardous area. Before entering the hazardous area, the butterfly valve can be closed in advance to prevent sparks from causing danger; after leaving the hazardous area, the butterfly valve can be opened.

[0027] 4. The exhaust spark arrester of this application combines automatic and manual remote control modes, providing flexible and diverse control methods. It can be controlled automatically or manually. In automatic remote control mode, the vehicle ECU automatically controls the opening and closing of the butterfly valve based on the temperature of the temperature sensor. In manual remote control mode, the vehicle ECU directly controls the opening and closing of the butterfly valve. It can be applied to different driving scenarios and has complete functions.

[0028] 5. The exhaust spark arrester of this application includes a display wiring harness in its electric cylinder, which is connected to the cab display. When the electric cylinder is opened and extends or retracts, the cab display shows whether the arrester is open or closed. The exhaust spark arrester of this application provides clear and intuitive feedback on the display screen when the butterfly valve is switching states. Compared to existing technologies where it is impossible to determine whether the butterfly valve is fully open or closed after operation, this application provides clear feedback, reducing safety hazards and improving the driving experience.

[0029] 6. The control method of this application, by setting an electric cylinder in conjunction with a butterfly valve, can realize the function of closing or opening the exhaust pipe of the exhaust spark arrester; at the same time, it does not require getting out of the driver's cab, and can be remotely operated through the vehicle's ECU, which is convenient and greatly improves the driving experience. When the exhaust spark arrester is automatically remotely controlled by this application's control method, it can effectively prevent the exhaust pipe temperature from becoming too high, thereby improving the overall vehicle safety performance.

[0030] The control method of this application is flexible and diverse, and can be used for both automatic and manual remote control. In automatic remote control, the vehicle ECU automatically controls the opening and closing of the butterfly valve based on the temperature of the temperature sensor. In manual remote control, the vehicle ECU directly controls the opening and closing of the butterfly valve. It can be applied to different driving scenarios and has complete functions. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of an existing exhaust spark extinguisher;

[0033] Figure 2 This is a schematic diagram of the exhaust spark extinguisher of this application;

[0034] Figure 3 This is a schematic diagram of the butterfly valve of this application;

[0035] Figure 4 A flowchart of the exhaust spark extinguisher in automatic control mode of this application;

[0036] Reference numerals: 1. Exhaust pipe; 2. Pull rod assembly; 3. Handle; 11. Electric cylinder; 12. Piston guide rod; 13. Rotary switch; 14. Display harness; 16. Base plate; 17. Vertical bracket; 18. Horizontal bracket; 19. Pad; 20. Butterfly valve; 201. Rotating shaft; 202. Valve body; 203. Valve plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 2 and Figure 3 As shown, this application discloses a remote-controlled exhaust spark extinguisher, which includes a butterfly valve 20, a rotary switch 13, and an electric cylinder 11.

[0039] Specifically, butterfly valve 20 is installed inside exhaust pipe 1, and butterfly valve 20 can be used to close exhaust pipe 1. Butterfly valve 20 includes a rotating shaft 201 and a valve plate 203. The rotating shaft 201 and valve plate 203 are coplanar and fixed to each other. The axis of rotating shaft 201 is perpendicular to the axis of exhaust pipe 1. When rotating shaft 201 rotates, valve plate 203 of butterfly valve 20 can close exhaust pipe 1 or not close exhaust pipe 1. One end of rotating shaft 201 extends outward through exhaust pipe 1. Specifically, the axis of rotating shaft 201 is perpendicular to the axis of exhaust pipe 1, which can be directly perpendicular with both axes coplanar, or perpendicular with both axes coplanar but not directly perpendicular.

[0040] A rotary switch 13 in the shape of a sheet is fixed at one end vertically to the protruding end of the rotating shaft 201. When the other end of the rotary switch 13 swings, it drives the rotating shaft 201 to rotate.

[0041] The telescopic end of the electric cylinder 11 is hinged to the other end of the rotary switch 13. The telescopic end of the electric cylinder 11 can drive the rotating shaft 201 to rotate via the rotary switch 13. The rotating shaft 201 drives the valve plate 203 to rotate, thereby causing the valve plate 203 to close or not close the exhaust pipe 1. The electric cylinder 11 is connected to the vehicle ECU via a signal line.

[0042] Specifically, valve plate 203 closes exhaust pipe 1, that is, butterfly valve 20 is closed; valve plate 203 does not close exhaust pipe 1, that is, butterfly valve 20 is open.

[0043] Specifically, the electric cylinder 11 is an electric drive device that converts the rotary motion of an electric motor into the linear reciprocating motion of a push rod. The principle of the electric cylinder is that after the electric motor is reduced by gears, it drives a pair of lead screws and nuts, converting the rotary motion of the motor into linear motion, and completing the extension and retraction action by using the forward and reverse rotation of the electric motor.

[0044] The remote-controlled exhaust spark arrester of this application, by setting an electric cylinder 11 in conjunction with a butterfly valve 20, can realize the function of closing or not closing the exhaust pipe 1; at the same time, it can be remotely operated through the vehicle ECU without having to get in or out of the cab, which is convenient and greatly improves the driving experience.

[0045] In one embodiment, the exhaust spark arrester further includes a temperature sensor, an automatic control switch, and a manual control switch. The temperature sensor is located inside the exhaust pipe 1, while the automatic and manual control switches are both located in the driver's cab. All three switches are connected to the vehicle's ECU. The temperature sensor monitors the temperature inside the exhaust pipe 1 in real time, and only one of the automatic and manual control switches can be activated at a time.

[0046] The automatic control switch is used to determine whether to automatically control the opening and closing of the butterfly valve 20 of the exhaust spark arrester through a combination of the vehicle ECU and the temperature sensor, while the manual control switch is used to directly control the opening and closing of the butterfly valve 20 of the exhaust spark arrester.

[0047] Furthermore, when the exhaust spark arrester is automatically remotely controlled, such as... Figure 4 As shown, when the automatic control switch is turned on, the vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to the first threshold. If so, the vehicle ECU controls the electric cylinder 11 to close the butterfly valve 20; otherwise, the temperature sensor continues to monitor the temperature.

[0048] After the butterfly valve 20 is closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to the second threshold. If so, the vehicle ECU controls the electric cylinder 11 to open the butterfly valve 20; otherwise, the butterfly valve 20 remains closed for a period of time. It is worth noting that the angle to which the valve plate 203 opens after the butterfly valve 20 is opened is not described in detail in this application.

[0049] When the exhaust spark arrester of this application is automatically remotely controlled, it can effectively prevent the exhaust pipe temperature from becoming too high and improve the overall vehicle safety performance.

[0050] Furthermore, when the exhaust spark arrester is manually and remotely controlled, when the manual control switch is on, the vehicle ECU controls the electric cylinder 11 to close the butterfly valve 20 via the rotary switch 13; when the manual control switch is off, the vehicle ECU controls the electric cylinder 11 to open the butterfly valve 20 via the rotary switch 13. The manual remote control mode can be specifically applied when entering a hazardous area. Before entering the hazardous area, the butterfly valve 20 is closed in advance to prevent sparks from causing danger; after leaving the hazardous area, the butterfly valve 20 is opened.

[0051] The exhaust spark arrester of this application has flexible and diverse control methods, and can be controlled automatically or remotely. In automatic remote control, the vehicle ECU automatically controls the opening and closing of the butterfly valve 20 through the temperature of the temperature sensor. In manual remote control, the vehicle ECU directly controls the opening and closing of the butterfly valve 20. It can be applied to different driving scenarios and has complete functions.

[0052] In one embodiment, when the extended end of the electric cylinder 11 extends according to a set stroke, the butterfly valve 20 is closed; when the extended end of the electric cylinder 11 retracts according to a set stroke, the butterfly valve 20 is opened.

[0053] Furthermore, the electric cylinder 11 also includes a display harness 15, which is connected to the cab display; when the electric cylinder 11 is opened and performs an extension or retraction movement, the cab display shows whether the fire stop is on or off.

[0054] The exhaust spark arrester of this application can provide clear and intuitive feedback on the display screen when the butterfly valve 20 switches states. Compared with the existing technology, which cannot determine whether the butterfly valve is fully open or closed after operation, this application can provide clear feedback, reducing safety hazards and improving the driving experience.

[0055] Furthermore, the butterfly valve 20 also includes a valve body 202, which is annularly sealed to the inner wall of the exhaust pipe 1. The valve body 202 has a circular hole, and the valve plate 203 is rotatably disposed within the circular hole of the valve body 202 via a rotating shaft 201. When the valve plates 203 and 204 are coplanar, the butterfly valve 20 is closed, and the valve plates 203 and 204 seal the exhaust pipe 1. Specifically, one end of the rotating shaft is rotatably inserted into the valve body 202, and the other end penetrates the wall of the valve body 202 and the exhaust pipe 1.

[0056] Specifically, the base plate 16 is vertically positioned below the vehicle's pedal; the side of the electric cylinder 11 is tightly fixed to the base plate 16. The exhaust spark arrester also includes a piston guide rod 12, which is coaxially fixed to the telescopic end of the electric cylinder 11. One end of the piston guide rod 12 is fixed to the telescopic end of the electric cylinder 11, and the other end is hinged to the end of the rotary switch 13. The piston guide rod 12 is for easy connection and fixation.

[0057] The exhaust spark arrester also includes a vertical bracket 17, a horizontal bracket 18, and a soft pad 19. The horizontal bracket 18 is fixed to the front lower protective bracket of the vehicle. The top of the vertical bracket 17 is fixed to the horizontal bracket 18 via the soft pad 19, and the bottom of the vertical bracket 17 is fixed to the exhaust pipe 1 via a clamp. The vertical bracket 17, the horizontal bracket 18, and the soft pad 19 work together to ensure a stable connection and prevent vibration.

[0058] This application also discloses a control method for the above-mentioned exhaust spark arrester, characterized in that the exhaust spark arrester further includes a temperature sensor disposed in the exhaust pipe 1, an automatic control switch disposed in the driver's cab, and a manual control switch, the temperature sensor, the automatic control switch, and the manual control switch being connected to the vehicle ECU; the temperature sensor is used to monitor the temperature in the exhaust pipe 1 in real time, and only one of the automatic control switch and the manual control switch can be turned on at the same time;

[0059] The control method for the exhaust spark extinguisher includes the following steps:

[0060] like Figure 4 As shown, when the automatic control switch is turned on, the exhaust spark arrester is automatically controlled. The vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to the first threshold. If so, the vehicle ECU controls the electric cylinder 11 to start. The extension end of the electric cylinder 11 drives the rotating shaft 201 to rotate through the knob switch 13, closing the valve plate 203 (i.e., the butterfly valve 20 is closed), and the electric cylinder 11 is closed. If not, the temperature continues to be monitored.

[0061] After the valve plate 203 has been closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to the second threshold. If so, the vehicle ECU controls the electric cylinder 11 to start. The extension end of the electric cylinder 11 drives the rotating shaft 201 to rotate through the knob switch 13, opening the valve plate 203 (i.e., the butterfly valve 20 opens) and the electric cylinder 11 closes. If not, the valve plate 203 continues to be closed.

[0062] When the manual control switch is turned on, the vehicle ECU controls the electric cylinder 11 to start, and the extension end of the electric cylinder 11 drives the rotating shaft 201 to rotate through the knob switch 13, closing the valve plate 203 (i.e., closing the butterfly valve 20), and the electric cylinder 11 is closed; when the manual control switch is turned off, the vehicle ECU controls the electric cylinder 11 to start, and the extension end of the electric cylinder 11 drives the rotating shaft 201 to rotate through the knob switch 13, opening the valve plate 203 (i.e., opening the butterfly valve 20), and the electric cylinder 11 is closed.

[0063] Specifically, each time the electric cylinder 11 is started, it only extends or retracts by a set stroke before shutting down.

[0064] The control method of this application, by setting an electric cylinder 11 in conjunction with a butterfly valve 20, can realize the function of sealing or not sealing the exhaust pipe 1 of the exhaust spark arrester; at the same time, it can be remotely operated through the vehicle ECU without needing to get in or out of the driver's cab, making operation convenient and greatly improving the driving experience. When the exhaust spark arrester is automatically remotely controlled, the control method of this application can effectively prevent the exhaust pipe temperature from becoming too high, thus improving the overall vehicle safety performance.

[0065] The control method of this application is flexible and diverse, and can be used for both automatic and manual remote control. In automatic remote control, the vehicle ECU automatically controls the opening and closing of the butterfly valve 20 based on the temperature of the temperature sensor. In manual remote control, the vehicle ECU directly controls the opening and closing of the butterfly valve 20. It can be applied to different driving scenarios and has complete functions.

[0066] In one embodiment, when the extended end of the electric cylinder 11 extends according to a set stroke, the butterfly valve 20 is closed; when the extended end of the electric cylinder 11 retracts according to a set stroke, the butterfly valve 20 is opened.

[0067] Furthermore, the electric cylinder 11 also includes a display harness 15, which is connected to the cab display; when the electric cylinder 11 is opened and performs an extension or retraction movement, the cab display shows whether the fire stop is on or off.

[0068] The control method of this application can provide clear and intuitive feedback on the display screen when the butterfly valve 20 switches states. Compared with the prior art, which cannot determine whether the butterfly valve is fully open or closed after operation, this application can provide clear feedback, reduce safety hazards, and improve the driving experience.

[0069] Furthermore, the butterfly valve 20 also includes a valve body 202, which is annularly sealed to the inner wall of the exhaust pipe 1. The valve body 202 has a circular hole, and the valve plate 203 is rotatably disposed in the circular hole of the valve body 202 via a rotating shaft 201. When the valve plate 203 and the valve plate 204 are coplanar, the butterfly valve 20 is closed, and the valve plate 203 and the valve plate 204 seal the exhaust pipe 1.

[0070] Specifically, one end of the rotating shaft can be rotatably inserted into the valve body 202, and the other end penetrates the valve body 202 and the pipe wall of the exhaust pipe 1.

[0071] Regarding the control method, specifically, the base plate 16 is vertically positioned below the vehicle's pedal; the side of the electric cylinder 11 is tightly fixed to the base plate 16. The exhaust spark arrester also includes a piston guide rod 12, which is coaxially fixed to the telescopic end of the electric cylinder 11. One end of the piston guide rod 12 is fixed to the telescopic end of the electric cylinder 11, and the other end is hinged to the end of the rotary switch 13. The piston guide rod 12 is for easy connection and fixation.

[0072] The exhaust spark arrester also includes a vertical bracket 17, a horizontal bracket 18, and a soft pad 19. The horizontal bracket 18 is fixed to the front lower protective bracket of the vehicle. The top of the vertical bracket 17 is fixed to the horizontal bracket 18 via the soft pad 19, and the bottom of the vertical bracket 17 is fixed to the exhaust pipe 1 via a clamp. The vertical bracket 17, the horizontal bracket 18, and the soft pad 19 work together to ensure a stable connection and prevent vibration.

[0073] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0074] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A remote-controlled exhaust spark extinguisher, characterized in that, include: The butterfly valve (20) installed on the exhaust pipe (1) includes a rotating shaft (201) and a valve plate (203) fixed in the same plane. The valve plate (203) can be used to close the exhaust pipe (1). The axis of the rotating shaft (201) is perpendicular to the axis of the exhaust pipe (1) and one end of the rotating shaft (201) extends outward through the exhaust pipe (1). A sheet-shaped rotary switch (13) has one end fixed vertically to the protruding end of the rotating shaft (201); An electric cylinder (11) has its telescopic end hinged to the other end of a rotary switch (13); the telescopic end of the electric cylinder (11) is used to drive the valve plate (203) to rotate through the rotary switch (13) and the rotating shaft (201); the electric cylinder (11) is connected to the vehicle ECU through a signal line. The exhaust spark arrester also includes a temperature sensor installed in the exhaust pipe (1), an automatic control switch and a manual control switch installed in the cab. The temperature sensor, the automatic control switch and the manual control switch are all connected to the vehicle ECU. The temperature sensor is used to monitor the temperature in the exhaust pipe (1) in real time. Only one of the automatic control switch and the manual control switch can be turned on at the same time. The automatic control switch is used to determine whether to automatically control the opening and closing of the butterfly valve (20) of the exhaust spark arrester through a combination of the vehicle ECU and the temperature sensor; the manual control switch is used to directly control the opening and closing of the butterfly valve (20) of the exhaust spark arrester. When the extended end of the electric cylinder (11) extends according to the set stroke, the butterfly valve (20) closes; when the extended end of the electric cylinder (11) retracts according to the set stroke, the butterfly valve (20) opens; the electric cylinder (11) also includes a display harness (14), which is connected to the cab display; when the electric cylinder (11) is opened and makes an extension or retraction movement, the cab display shows whether the fire stop is on or off.

2. The remote-controlled exhaust spark extinguisher as described in claim 1, characterized in that: When the automatic control switch is turned on, the vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to the first threshold. If so, the vehicle ECU controls the electric cylinder (11) to close the butterfly valve (20) through the rotary switch (13). After the butterfly valve (20) is closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to the second threshold. If so, the vehicle ECU controls the electric cylinder (11) to open the butterfly valve (20).

3. The remote-controlled exhaust spark extinguisher as described in claim 1, characterized in that: When the manual control switch is turned on, the vehicle ECU controls the electric cylinder (11) to close the butterfly valve (20) through the rotary switch (13); when the manual control switch is turned off, the vehicle ECU controls the electric cylinder (11) to open the butterfly valve (20) through the rotary switch (13).

4. A remote-controlled exhaust spark extinguisher as described in claim 1, characterized in that: The butterfly valve (20) also includes a valve body (202), which is sealed to the inner wall of the exhaust pipe (1). The valve body (202) has a round hole, and the valve plate (203) is rotatably disposed in the round hole of the valve body (202) via a rotating shaft (201). When the valve plate (203) and the valve plate (203) are coplanar, the butterfly valve (20) is closed, and the valve plate (203) and the valve plate (203) seal the exhaust pipe (1).

5. A remote-controlled exhaust spark extinguisher as described in claim 1, characterized in that: The side of the electric cylinder (11) is fixed to the base plate (16), which is vertically positioned below the vehicle's pedal. The exhaust spark arrester also includes a piston rod (12), which is coaxially fixed to the telescopic end of the electric cylinder (11). One end of the piston rod (12) is fixed to the telescopic end of the electric cylinder (11), and the other end is hinged to the end of the rotary switch (13). The exhaust spark extinguisher also includes a vertical bracket (17), a horizontal bracket (18) and a soft pad (19). The horizontal bracket (18) is fixed to the front lower protective bracket of the vehicle. The top of the vertical bracket (17) is fixed to the horizontal bracket (18) by the soft pad (19), and the bottom of the vertical bracket (17) is fixed to the exhaust pipe (1) by a clamp.

6. A control method for the exhaust spark extinguisher as described in claim 1, characterized in that, The exhaust spark arrester also includes a temperature sensor installed in the exhaust pipe (1), an automatic control switch and a manual control switch installed in the cab. The temperature sensor, the automatic control switch and the manual control switch are all connected to the vehicle ECU. The temperature sensor is used to monitor the temperature in the exhaust pipe (1) in real time. Only one of the automatic control switch and the manual control switch can be turned on at the same time. The control method includes the following steps: When the automatic control switch is turned on, the exhaust spark arrester is automatically controlled. The vehicle ECU determines whether the temperature fed back by the temperature sensor is greater than or equal to the first threshold. If so, the vehicle ECU controls the electric cylinder (11) to start and the extension end of the electric cylinder (11) drives the rotating shaft (201) to rotate through the knob switch (13), closing the valve plate (203). If not, the temperature continues to be monitored. After the valve plate (203) has been closed for a period of time, the vehicle ECU determines whether the temperature fed back by the temperature sensor is less than or equal to the second threshold. If so, the vehicle ECU controls the electric cylinder (11) to start and the extension end of the electric cylinder (11) drives the rotating shaft (201) to rotate through the knob switch (13), opening the valve plate (203). If not, the valve plate (203) continues to be closed. When the manual control switch is turned on, the vehicle ECU controls the electric cylinder (11) to start and the extension end of the electric cylinder (11) drives the rotating shaft (201) to rotate through the knob switch (13), closing the valve plate (203); when the manual control switch is turned off, the vehicle ECU controls the electric cylinder (11) to start and the extension end of the electric cylinder (11) drives the rotating shaft (201) to rotate through the knob switch (13), opening the valve plate (203).

7. The control method as described in claim 6, characterized in that: When the extended end of the electric cylinder (11) extends according to the set stroke, the butterfly valve (20) closes; when the extended end of the electric cylinder (11) retracts according to the set stroke, the butterfly valve (20) opens; the electric cylinder (11) also includes a display harness (14), which is connected to the cab display; when the electric cylinder (11) is opened and makes an extension or retraction movement, the cab display shows whether the fire stop is on or off.

8. The control method as described in claim 6, characterized in that: The butterfly valve (20) also includes a valve body (202), which is sealed to the inner wall of the exhaust pipe (1). The valve body (202) has a round hole, and the valve plate (203) is rotatably disposed in the round hole of the valve body (202) via a rotating shaft (201). When the valve plate (203) and the valve plate (203) are coplanar, the butterfly valve (20) is closed, and the valve plate (203) and the valve plate (203) seal the exhaust pipe (1).

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