Fire extinguishing device for mining truck

Abstract

The invention relates to the technical field of vehicle fire extinguishing, in particular to a mining truck fire extinguishing device which comprises a carrying unit, a fire extinguishing unit, a fixing assembly and a fire extinguishing assembly arranged on the outer side of the fixing assembly. And the shunting unit comprises a shunting assembly arranged on one side of the fixing assembly, an electrifying assembly arranged on one side of the shunting assembly and a cleaning assembly arranged on one side of the fixing assembly. The mining truck fire extinguisher has the beneficial effects that the use range of the fire extinguisher is expanded by prolonging the fire extinguishing pipe, so that a worker does not need to frequently move the heavy fire extinguisher to extinguish the fire of the mining truck, meanwhile, the capacity of the fire extinguisher can be increased, and the possibility of insufficient fire extinguishing substances during fire extinguishing is reduced; and fire extinguishing substances are prevented from blocking the extension pipe and entering the inner side of the cleaning pipe or the fire extinguishing pipe by mistake under the action of airflow to cause damage to a corresponding machine.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle fire extinguishing, in particular to a fire extinguishing device for a mining truck. Background Art

[0002] In modern mining operations, mining trucks are an important means of transportation, and their safety performance is crucial. However, due to the special working environment of mining trucks, they are often faced with various fire risks, such as fuel tank leakage, friction fire under the vehicle, tire overheating and explosion, or electrical circuit failure. In response to these potential fire hazards, mining trucks are usually equipped with fire extinguishers as emergency measures. However, at present, most of the fire extinguishers of mining trucks are installed in a conspicuous position of the truck according to a standardized design, such as above the truck, near the cab, or in a place that is easy for the driver to quickly access. The original intention of this design is to enable the driver to quickly get the fire extinguisher to extinguish the initial fire in an emergency. However, this traditional fire extinguisher installation method has some obvious limitations: First, the capacity of traditional fire extinguishers is relatively small, and may not meet the fire extinguishing needs of large mining trucks in the event of a serious fire. When the fire is large or the fire source is inconvenient to approach, it is difficult for a small-capacity fire extinguisher to effectively control the fire in a short period of time, which requires the driver to get on and off the vehicle many times to extinguish the fire, which not only increases the difficulty of fire extinguishing, but also prolongs the fire extinguishing time; secondly, when the fuel tank, underbody, tires or lines of a mining truck are on fire, the driver needs to leave the cab to get the fire extinguisher. This process is not only inefficient, but also has a high safety risk, especially in mining areas, where the terrain is complex and the environment is harsh. Drivers are prone to slips, falls and other high-fall accidents when getting on and off the vehicle, causing personal injury; in addition, since mining trucks are usually high, drivers may need to use tools or climb when taking the fire extinguisher installed on the top of the truck, which not only increases the complexity of the operation, but also increases the operation time. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a mining truck fire extinguishing device, which can solve the problems of small capacity, inconvenient to take and low fire extinguishing efficiency of the currently used mining truck fire extinguishers.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a fire extinguishing device for a mining truck, comprising a fire extinguishing unit, including a fixed component, and a fire extinguishing component arranged outside the fixed component; The flow diversion unit comprises a flow diversion component arranged on one side of the fixed component, a power supply component arranged on one side of the flow diversion component, and a cleaning component arranged on one side of the fixed component.

[0006] As a preferred solution of the mining truck fire extinguishing device of the present invention, the fixing assembly includes a fixing seat, a fixing plate arranged on the upper side of the fixing seat, and a roller rotatably connected to the fixing plate.

[0007] As a preferred solution of the mining truck fire extinguishing device of the present invention, the fire extinguishing assembly includes a fire extinguisher arranged on one side of the fixing seat, a fire extinguisher pipe fixedly connected to the fire extinguisher, and an extended fire extinguishing pipe arranged on the outer side of the roller.

[0008] As a preferred solution of the fire extinguishing device for mining trucks of the present invention, the flow diversion assembly includes a fixed box fixedly connected to the fixed assembly, a flow diversion pipe arranged on one side of the fixed box, a flow diversion member arranged on the inner side of the fixed box, a flow diversion channel arranged on the inner side of the fixed assembly, and a connecting channel arranged on a section of the flow diversion channel; The flow dividing member comprises two groups of rotating plates arranged inside the fixed box, a push rod arranged outside the rotating plate, and a first return spring fixedly connected to the push rod.

[0009] As a preferred solution of the mining truck fire extinguishing device of the present invention, the power-on component includes a protrusion arranged on the upper side of the push rod, a first electrode sheet fixedly connected to the protrusion, a movable rod arranged on the upper side of the protrusion, a second return spring arranged on one side of the movable rod, and a second electrode sheet arranged on one side of the movable rod.

[0010] As a preferred solution of the mining truck fire extinguishing device of the present invention, the cleaning component includes a cleaning pipe arranged on one side of the fixed box, two sets of baffles arranged on the inner side of the fixed box, an opening and closing plate arranged on the upper side of the baffle, a locking ratchet arranged on the inner side of the opening and closing plate, and a compression spring fixedly connected to the inner side of the baffle.

[0011] As a preferred solution of the mining truck fire extinguishing device of the present invention, the fixing seat is fixedly installed at the position where the original fire extinguisher is placed in the mining car, and the fire extinguisher pipe is installed at the bottom of the fixing box, and the other end of the fire extinguisher pipe is fixedly connected to the replaced large-capacity fire extinguisher.

[0012] As a preferred solution of the mining truck fire extinguishing device of the present invention, one end of the cleaning pipe is connected to the top of the fixed box, and the other end is connected to the blowing port of the blower. The blower circuit is connected to the inner side of the movable rod, and is connected or disconnected by the contact between the first electrode sheet and the second electrode sheet.

[0013] As a preferred solution of the mining truck fire extinguishing device of the present invention, the extended fire extinguishing pipe is wrapped around the surface of the roller, the diversion channel is arranged on the inner side of the roller, one end passes through the center of the roller and is connected to the fixed box, and the other end is connected to the connecting channel, and is connected to the end of the extended fire extinguishing pipe through the connecting channel.

[0014] As a preferred solution of the mining truck fire extinguishing device of the present invention, the fire extinguisher pipe and the extended fire extinguishing pipe are fixed after being sleeved together, and can be disassembled and separated after the fire extinguishing material in the fire extinguisher is used up, and the fire extinguisher and the fire extinguisher pipe can be replaced.

[0015] The beneficial effects of the present invention are as follows: the present invention expands the use scope of the fire extinguisher by extending the fire extinguishing pipe, so that the staff does not need to frequently move the heavy fire extinguisher to extinguish the fire on the mining truck, and the capacity of the fire extinguisher can be increased, thereby reducing the possibility of insufficient fire extinguishing materials during fire extinguishing. At the same time, through the cooperation of the opening and closing plate and the pushing plate, the fire extinguishing material is prevented from clogging the extension pipe, and the fire extinguishing material is prevented from mistakenly entering the cleaning pipe or the inside of the fire extinguishing pipe under the action of the airflow, causing damage to the corresponding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 This is a schematic diagram of the fire extinguisher structure of a mining truck fire extinguishing device.

[0017] Figure 2 This is a schematic diagram of the diversion unit and part of the fire extinguishing unit structure of a mining truck fire extinguishing device.

[0018] Figure 3 This is a schematic diagram of the structure of the fixed components of the mining truck fire extinguishing device.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the diversion component of the mining truck fire extinguishing device.

[0020] Figure 5 This is a schematic cross-sectional diagram of the internal structure of the fixed box of the mining truck fire extinguishing device.

[0021] Figure 6 for Figure 5 Schematic diagram of the structure of part A is shown.

[0022] Figure 7 for Figure 5 Schematic diagram of the structure of part B is shown. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1 Reference Figure 1 to Figure 7 , which is the first embodiment of the present invention, provides a mining truck fire extinguishing device, which can enable workers to quickly pull the pipe to the fire location for fire extinguishing by cooperating with the fire extinguisher 102a with a larger capacity and a long pipe, without the need to frequently take the fire extinguisher 102a, thereby greatly improving the fire extinguishing efficiency.

[0027] Specifically, the fire extinguishing unit 100 includes a fixed component 101 and a fire extinguishing component 102 disposed outside the fixed component 101; The diversion unit 200 includes a diversion component 201 disposed on one side of the fixing component 101 , a power supply component 202 disposed on one side of the diversion component 201 , and a cleaning component 203 disposed on one side of the fixing component 101 .

[0028] Furthermore, the fixing assembly 101 includes a fixing seat 101a, a fixing disk 101b disposed on the upper side of the fixing seat 101a, and a roller 101c rotatably connected to the fixing disk 101b, wherein the fixing seat 101a is fixedly connected to the fixing disk 101b, and the roller 101c is in a hollow state.

[0029] Furthermore, the fire extinguishing assembly 102 includes a fire extinguisher 102a arranged on one side of the fixed seat 101a, a fire extinguisher 102a tube fixedly connected to the fire extinguisher 102a, and an extended fire extinguishing tube 102c arranged on the outside of the roller 101c, wherein the extended fire extinguishing tube 102c is wound around the outside of the roller 101c, and when in use, the roller 101c can be driven to rotate by pulling the extended fire extinguishing tube 102c.

[0030] Further, the flow diversion assembly 201 includes a fixed box 201a fixedly connected to the fixed assembly 101, a flow diversion pipe 201b arranged on one side of the fixed box 201a, a flow diversion member 201c arranged inside the fixed box 201a, a flow diversion channel 201d arranged inside the fixed assembly 101, and a connecting channel 201e arranged at a section of the flow diversion channel 201d, wherein the flow diversion pipe 201b is fixedly connected to the fixed box 201a, and is also fixedly connected to the fire extinguisher 102a pipe; The diverter 201c includes two groups of rotating plates 201c-1 arranged on the inner side of the fixed box 201a, a push rod 201c-2 arranged on the outer side of the rotating plate 201c-1, and a first return spring 201c-3 fixedly connected to the push rod 201c-2, wherein the rotating plate 201c-1 is hinged to the fixed box 201a, the push rod 201c-2 is in contact with the rotating plate 201c-1, and the first return spring 201c-3 is arranged on the lower side of the push rod 201c-2. When the rotating plate 201c-1 rotates outward, the push rod 201c-2 moves outward and drives the first return spring 201c-3 to be compressed.

[0031] Furthermore, the power-on component 202 includes a protrusion 202a arranged on the upper side of the push rod 201c-2, a first electrode sheet 202b fixedly connected to the protrusion 202a, a movable rod 202c arranged on the upper side of the protrusion 202a, a second return spring 202d arranged on one side of the movable rod 202c, and a second electrode sheet 202e arranged on one side of the movable rod 202c, wherein the protrusion 202a is fixedly connected to the push rod 201c-2, the bottom of the movable rod 202c contacts the top of the protrusion 202a in an initial position, and the second electrode sheet 202e is fixedly connected to the movable rod 202c.

[0032] Furthermore, the cleaning assembly 203 includes a cleaning tube 203a arranged on one side of the fixed box 201a, two groups of baffles 203b arranged on the inner side of the fixed box 201a, an opening and closing plate 203c arranged on the upper side of the baffle, a locking ratchet 203d arranged on one side of the opening and closing plate 203c, and a compression spring 203e fixedly connected to the inner side of the baffle, wherein the cleaning tube 203a is fixedly connected to the fixed box 201a, the baffle is slidably connected to the fixed box 201a, one outer end contacts the top of the movable rod 202c, the opening and closing plate 203c is hinged to the fixed box 201a, a rack is provided on the top of the baffle, and the locking ratchet 203d is engaged with the rack provided on the top of the baffle.

[0033] It should be noted that the locking ratchet 203d is hinged to the fixed box 201a through the wheel axle, and one end of the wheel axle is provided with a thread, and the inner side of the corresponding opening and closing plate 203c is provided with a matching thread groove. Since the opening and closing plate 203c is limited by the locking ratchet 203d, the threaded section can be rotated into the inner side of the opening and closing plate 203c when the wheel axle rotates. A tension spring and a groove matching the aperture of the movable hole on the outer side of the fixed box 201a are provided at the outer end of the wheel axle. When it is necessary to unlock the opening and closing plate 203c, the staff pulls the wheel axle to put the tension spring in a tensioned state, and the groove is aligned with the movable hole. The ratchet is driven upward by the wheel axle and leaves the rack on the upper side of the baffle. After unlocking the opening and closing plate 203c, the staff loosens the outer end of the wheel axle, the tension spring returns to the initial position, and the wheel axle is stuck in the movable hole.

[0034] Preferably, the fixing seat 101a is fixedly installed at the position where the original fire extinguisher 102a of the mine car is placed, and the fire extinguisher 102a pipe is installed at the bottom of the fixing box 201a, and the other end of the fire extinguisher 102a pipe is fixedly connected to the replaced large-capacity fire extinguisher 102a; one end of the cleaning pipe 203a is connected to the top of the fixing box 201a, and the other end is connected to the air outlet of the hair dryer. The hair dryer circuit is connected to the inner side of the movable rod 202c, and is connected or disconnected by the contact between the first electrode sheet 202b and the second electrode sheet 202e; the extension The fire extinguishing pipe 102c is wound around the surface of the roller 101c, and the diversion channel 201d is arranged on the inner side of the roller 101c. One end passes through the center of the roller 101c and is connected to the fixed box 201a, and the other end is connected to the connecting channel 201e, and is connected to the end of the extended fire extinguishing pipe 102c through the connecting channel 201e; the fire extinguisher 102a pipe and the extended fire extinguishing pipe 102c are fixed after being sleeved, and can be disassembled and separated after the fire extinguishing material in the fire extinguisher 102a is used up, and the fire extinguisher 102a and the fire extinguisher 102a pipe can be replaced.

[0035] During use, when a fire occurs, the staff pulls the extended fire extinguishing pipe 102c to extend it to the fire location, and further the staff opens the valve of the large fire extinguisher 102a, and the fire extinguishing substance in the fire extinguisher 102a flows into the diversion pipe 201b through the fire extinguisher 102a pipe. The impact force generated by the rapid passage of the fire extinguishing substance pushes the two rotating plates 201c-1 upward, so that the fire extinguishing substance can enter the diversion channel 201d through the fire extinguisher 102a pipe, and then enter the extended fire extinguishing pipe 102c from the diversion channel 201d through the connecting channel 201e, and is sprayed out through the extended fire extinguishing pipe 102c to extinguish the fire point. During the fire extinguishing process, the staff only needs to pull the extended fire extinguishing pipe 102c to move it, and there is no need for the staff to carry the whole tank of fire extinguisher 102a and move it up and down frequently, which greatly improves the fire extinguishing efficiency and safety.

[0036] When the two rotating plates 201c-1 are lifted up by air pressure, the rotating plates 201c-1 rotate outwardly with the rotating shaft on one side of the bottom as the axis, and at the same time push the push rods 201c-2 on both sides to move outward, and at the same time compress the first return spring 201c-3, and the protrusion 202a moves outward synchronously with the push rod 201c-2. At this time, the protrusion 202a is separated from the bottom of the movable rod 202c, and the pressure on the second return spring 202d disappears. Since its upper end is fixed, when the pressure disappears, the second return spring 202d extends downward to a free length. At the same time, since the other end of the second return spring 202d is fixedly connected to the movable rod 202c, when the other end of the second return spring 202d moves downward, it drives the movable rod 202c to move. The rod 202c moves downward synchronously, so that the bottom end of the movable rod 202c disengages from the protrusion 202a and directly contacts the push rod 201c-2. At the same time, the top end of the movable rod 202c disengages from the baffle, and the pressure on the baffle disappears. At the same time, the pressure on the compression spring 203e disappears synchronously, and the compression spring 203e extends outward to a free length, while pushing the baffle to move outward. When the baffle moves outward, it drives the locking ratchet 203d to rotate synchronously, so that the threaded part of the wheel shaft of the locking ratchet 203d is tightened with the opening and closing plate 203c. At this time, the opening and closing plate 203c is fixedly connected with the locking ratchet 203d. The opening and closing plate 203c is locked at this time and will not be opened by the impact force of the fire extinguishing substance, thereby preventing the fire extinguishing substance from entering the cleaning pipe 203a.

[0037] When the fire is extinguished and the fire extinguishing material is sprayed, the staff gradually closes the valve of the large fire extinguisher 102a. At this time, the impact force brought by the fire extinguishing material in the fixed box 201a is reduced, and the pressure on the first return spring 201c-3 is reduced at the same time, so that the first return spring 201c-3 gradually recovers to the free length. At the same time, the first return spring 201c-3 drives the push rod 201c-2 to move inward, and the push rod 201c-2 pushes the two rotating plates 201c-1 to rotate inward along the rotating shaft until they are closed, so that the two rotating plates 201c-1 return to the initial position. When the rotating plate 201c-1 returns to the initial position, the movable rod 202c is pushed to contact the baffle again. At this time, the staff pulls out the wheel shaft sleeve and further pulls the locking ratchet 203d wheel shaft upward to lock the locking ratchet 203 d separates from the push baffle, so that the opening and closing plate 203c is unlocked. At the same time, the protrusion 202a moves inward synchronously with the push rod 201c-2 to fit with the bottom side of the movable rod 202c, so that the first electrode plate 202b contacts the second electrode plate 202e. At this time, the hair dryer circuit is connected, and the hair dryer starts to blow air into the fixed box 201a through the cleaning tube 203a. The high-pressure gas blown out by the hair dryer blows the opening and closing plate 203c inward to an open state. At this time, the high-pressure gas will flow into the diversion channel 201d through the diversion tube 201b, and then be ejected from the extended fire extinguishing pipe 102c through the connecting channel 201e. This operation will blow out the residual fire extinguishing material in the diversion channel 201d and the extended fire extinguishing pipe 102c to prevent the residual fire extinguishing material from clogging the extended fire extinguishing pipe 102c.

[0038] In summary, by extending the fire extinguishing pipe 102c to expand the scope of use of the fire extinguisher 102a, the staff does not need to frequently move the heavy fire extinguisher 102a to extinguish the fire of the mining truck, and can also increase the capacity of the fire extinguisher 102a, reduce the possibility of insufficient fire extinguishing materials during fire extinguishing, and prevent the fire extinguishing materials from blocking the extension pipe through the cooperation of the opening and closing plate 203c and the push plate, and also prevent the fire extinguishing materials from mistakenly entering the cleaning pipe 203a or the inner side of the fire extinguishing pipe under the action of the airflow, causing damage to the corresponding machine. It is important to note that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be easily understood by those who refer to this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in the application, such as installation arrangement, use of materials, color, changes in orientation, etc. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "bracket plus function" clause is intended to cover structures that perform the functions described herein, and not only structural equivalence but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0039] Additionally, in an effort to provide a concise description of example embodiments, all features of an actual implementation may not be described.

[0040] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fire extinguishing device for a mining truck, characterized in that: include, A fire extinguishing unit (100) comprises a fixing component (101) and a fire extinguishing component (102) arranged outside the fixing component (101); The flow diversion unit (200) comprises a flow diversion component (201) arranged on one side of the fixed component (101), a power supply component (202) arranged on one side of the flow diversion component (201), and a cleaning component (203) arranged on one side of the fixed component (101).

2. The mining truck fire extinguishing device according to claim 1, characterized in that: The fixing assembly (101) comprises a fixing seat (101a), a fixing disk (101b) arranged on the upper side of the fixing seat (101a), and a rotating roller (101c) rotatably connected to the fixing disk (101b).

3. The mining truck fire extinguishing device according to claim 2, characterized in that: The fire extinguishing assembly (102) comprises a fire extinguisher (102a) arranged on one side of the fixing seat (101a), a fire extinguisher (102a) pipe fixedly connected to the fire extinguisher (102a), and an extended fire extinguishing pipe (102c) arranged on the outside of the rotating roller (101c).

4. The mining truck fire extinguishing device according to any one of claims 1 to 3, characterized in that: The flow splitting component (201) comprises a fixed box (201a) fixedly connected to the fixed component (101), a flow splitting pipe (201b) arranged at one side of the fixed box (201a), a flow splitting piece (201c) arranged inside the fixed box (201a), a flow splitting channel (201d) arranged inside the fixed component (101), and a connecting channel (201e) arranged at a section of the flow splitting channel (201d); The flow divider (201c) comprises two groups of rotating plates (201c-1) arranged on the inner side of the fixed box (201a), a push rod (201c-2) arranged on the outer side of the rotating plate (201c-1), and a first return spring (201c-3) fixedly connected to the push rod (201c-2).

5. The mining truck fire extinguishing device according to claim 4, characterized in that: The power supply component (202) comprises a protrusion (202a) arranged on the upper side of the push rod (201c-2), a first electrode sheet (202b) fixedly connected to the protrusion (202a), a movable rod (202c) arranged on the upper side of the protrusion (202a), a second return spring (202d) arranged on one side of the movable rod (202c), and a second electrode sheet (202e) arranged on one side of the movable rod (202c).

6. The mining truck fire extinguishing device according to claim 5, characterized in that: The cleaning assembly (203) comprises a cleaning tube (203a) arranged on one side of the fixed box (201a), two groups of baffles (203b) arranged on the inner side of the fixed box (201a), an opening and closing plate (203c) arranged on the upper side of the baffle, a locking ratchet (203d) arranged on the inner side of the opening and closing plate (203c), and a compression spring (203e) fixedly connected to the inner side of the baffle.

7. The mining truck fire extinguishing device according to claim 2, characterized in that: The fixing seat (101a) is fixedly installed at the position where the original fire extinguisher (102a) is placed on the mine car, and the fire extinguisher (102a) pipe is installed at the bottom of the fixing box (201a), and the other end of the fire extinguisher (102a) pipe is fixedly connected to the replaced large-capacity fire extinguisher (102a).

8. The mining truck fire extinguishing device according to claim 7, characterized in that: One end of the cleaning tube (203a) is connected to the top of the fixed box (201a), and the other end is connected to the air outlet of the hair dryer. The hair dryer circuit is connected to the inner side of the movable rod (202c) and is connected or disconnected by the contact between the first electrode sheet (202b) and the second electrode sheet (202e).

9. The mining truck fire extinguishing device according to claim 3, characterized in that: The extended fire extinguishing pipe (102c) is wound around the surface of the roller (101c), and the diversion channel (201d) is arranged on the inner side of the roller (101c), one end of which passes through the center of the roller (101c) and is connected to the fixed box (201a), and the other end is connected to the connecting channel (201e), and is communicated with the end of the extended fire extinguishing pipe (102c) through the connecting channel (201e).

10. The mining truck fire extinguishing device according to claim 9, characterized in that: The fire extinguisher (102a) pipe and the extended fire extinguisher pipe (102c) are fixed after being sleeved together, and can be disassembled and separated after the fire extinguishing material in the fire extinguisher (102a) is used up, and the fire extinguisher (102a) and the fire extinguisher (102a) pipe can be replaced.

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