Mechanism for preventing water from entering engine of amphibious automobile

Abstract

The invention discloses an amphibious automobile engine water inflow prevention mechanism, and belongs to the field of engine waterproofness, the amphibious automobile engine water inflow prevention mechanism comprises a filtering assembly, a drainage assembly and an exhaust assembly, the filtering assembly comprises an air filtering box, a connecting frame is installed in the air filtering box, and an air coarse filter element is embedded in the connecting frame; the front end of the air filtering box is connected with a box cover plate in a clamped mode, a gravity check valve is installed at the bottom of the air filtering box, an air inlet pipeline is installed at the upper end of the air filtering box, one end of the air inlet pipeline is connected with a connecting cover, and a filter screen is detachably connected into the connecting cover. The filtering assembly is matched with the drainage assembly and the exhaust assembly, so that the waterproof effect on the amphibious vehicle engine can be conveniently achieved, meanwhile, double drainage operation can be conveniently conducted through the air filtering box, the gravity check valve and the drainage pipe, and therefore the waterproof effect of the waterproof mechanism can be remarkably enhanced; the practicability of the waterproof mechanism can be enhanced, and water is prevented from entering the amphibious vehicle engine.

Description

Technical Field

[0001] The invention relates to the field of engine waterproofing, and in particular to a mechanism for preventing water from entering the engine of an amphibious vehicle. Background Art

[0002] With the development of amphibious vehicle technology, the waterproof performance of the engine has become one of the key factors to ensure the safe operation of the vehicle. Amphibious vehicles, also known as amphibious vehicles or amphibious vehicles, are special vehicles that can travel on land and water. They combine the design features of cars and ships and have high flexibility and adaptability. Amphibious vehicles are usually modified from cars or trucks and have special sealing systems and propulsion systems that enable them to travel on the water. When traveling on land, they use tires; when traveling on the water, the tires will be removed and replaced with floats or water jets. Amphibious vehicles are widely used in many fields, including military, rescue, patrol, detection, etc. For example, in flood control and disaster relief, emergency rescue, disaster relief, power engineering rescue, etc., amphibious vehicles can quickly arrive at the scene and provide effective rescue and support. In addition, it can also be used in civilian fields such as scenic sightseeing and exploration. As a special vehicle that can travel in water and on land, amphibious vehicles have unique application value in military, rescue, scientific research and leisure. With the development of technology and the growth of application needs, the performance requirements of amphibious vehicles are becoming higher and higher, especially the reliability and safety in complex environments. As the power source of amphibious vehicles, the engine maintains good waterproof performance during the driving process of the vehicle, which is the key to ensure its safe and reliable operation. The anti-water ingress mechanism of the amphibious vehicle engine is designed to ensure the safe operation of the engine in a variety of environments. The existing waterproof mechanism is simple, so the waterproof effect on the engine is not significant enough. Based on this, it is necessary to provide a waterproof mechanism that can significantly improve the waterproof effect and enhance practicality. In addition, the overall protective effect of the existing waterproof mechanism during installation is not significant enough. Based on this, it is necessary to provide a waterproof mechanism that can significantly improve the overall protective effect and extend the service life. Summary of the invention

[0003] The embodiment of the present invention provides an amphibious vehicle engine water ingress prevention mechanism, which aims to solve the problem that the existing waterproof mechanism is not convenient for multiple waterproof and drainage operations.

[0004] To achieve the above-mentioned purpose, the present invention provides an amphibious vehicle engine water ingress prevention mechanism, comprising a filter assembly, a drainage assembly and an exhaust assembly;

[0005] Wherein, the filter assembly comprises an air filter box, a connection frame is installed inside the air filter box, a coarse air filter element is embedded inside the connection frame, a box cover plate is connected to the front end of the air filter box, a gravity check valve is installed at the bottom of the air filter box, an air intake pipe is installed at the upper end of the air filter box, one end of the air intake pipe is connected to a connection cover, a filter screen is detachably connected inside the connection cover, and three vertical beams are equidistantly installed inside the connection frame;

[0006] A drainage assembly, the drainage assembly comprising a first elbow connected to the box cover, a drainage pipe and a second elbow, one end of the drainage pipe is connected to a connector, the lower end of the drainage pipe is provided with a drainage port, a valve sheet, two rubber sealing rings and a clamping ring installed between the two rubber sealing rings are respectively installed inside the drainage pipe, a micro motor is installed on one side of the drainage pipe, a motor housing is sleeved on the surface of the micro motor, a housing is installed on the lower end of the drainage pipe, a water immersion sensor is installed inside the housing, one side of the water immersion sensor is connected to an induction line, the surface of the water immersion sensor is connected to a knob, the lower end of the drainage port is rotatably connected to a valve cover, and a torsion spring is installed at the lower end of the valve cover;

[0007] An exhaust component, the exhaust component includes a third bent pipe connected to a second bent pipe, the end of the third bent pipe away from the second bent pipe is connected to a first straight pipe, one end of the first straight pipe is detachably connected to a fourth bent pipe, one end of the fourth bent pipe is detachably connected to a fifth bent pipe, and one end of the fifth bent pipe is detachably connected to a plurality of second straight pipes.

[0008] As a preferred solution of the present invention, the gravity check valve comprises a valve body, the interior of the valve body is rotatably connected to a valve stem, and the side surfaces of the valve stem are rotatably connected to a left valve plate and a right valve plate, respectively.

[0009] As a preferred solution of the present invention, two card slots are provided on both sides of the air filter box, and two card blocks are fixedly connected to both sides of the box cover plate, and the two card blocks are both clamped in the card slots.

[0010] As a preferred solution of the present invention, a plurality of positioning grooves are provided on both sides of the inner wall of the air filter box, a plurality of positioning plates are fixedly connected to both sides of the connection frame, and the plurality of positioning plates are snap-fitted into the interior of the positioning grooves.

[0011] As a preferred solution of the present invention, a plurality of slide grooves are provided at the bottom of the air filter box, a plurality of sliders are fixedly connected to the lower end of the connecting frame, and the plurality of sliders are all clamped in the inside of the slide grooves, a connecting flange is provided at the upper end of the air filter box, and the connecting cover is sealed and connected to the air filter box through the connecting flange.

[0012] As a preferred solution of the present invention, two plug-in strips are fixedly connected to both sides of the inner wall of the connection cover, two plug-in slots are provided at both ends of the filter screen, and the two plug-in strips are plugged into the inside of the plug-in slots.

[0013] As a preferred solution of the present invention, receiving plates are installed at both ends of the lower surface of the air filter box, the upper end of the receiving plate is fixedly connected to a limiting plate, the lower end of the receiving plate is fixedly connected to a stabilizing plate, two mounting holes are provided on opposite surfaces of the receiving plate and the stabilizing plate, buffer springs are installed inside the two mounting holes, and a damper is installed inside the buffer spring.

[0014] As a preferred solution of the present invention, a pin hole is formed at one end of the valve stem on one side of the receiving plate, and a pin rod is inserted into the pin hole.

[0015] As a preferred solution of the present invention, a first screw hole is opened inside the mounting hole, and the upper and lower ends of the buffer spring are fixedly connected with first bolts, and the first bolts are threadedly connected inside the first screw hole.

[0016] As a preferred solution of the present invention, the lower end of the drain pipe is fixedly connected with a connecting seat, the outer shell and the connecting seat are clamped with each other, a receiving plate is fixedly connected to one side of the drain pipe, a plurality of guide bars are fixedly connected to the upper end of the receiving plate, a plurality of guide grooves are provided at the lower end of the motor shell, and a plurality of guide bars are slidably connected to the inside of the guide grooves, connecting shafts are fixedly connected to both sides of the valve plate, limiting holes are provided at one end of the two connecting shafts, the output ends of the micro motors are connected to limiting shafts, and the limiting shafts are inserted into the limiting holes, the lower end of the drain pipe is fixedly connected with a hinge block, a side of the valve cover is fixedly connected with a hinge shaft, and the hinge shaft is hinged to the inside of the hinge block.

[0017] As a preferred solution of the present invention, the front end of the fifth bent pipe is fixedly connected with a clamp, one end of the second straight pipe is clamped inside the clamp, a filter element, a ventilation fan and a fixing frame are respectively installed inside several of the second straight tubes, a base is installed at the lower end of several of the second straight tubes, the upper end of the base is fixedly connected with a support, an arc groove is provided at the upper end of the support, the upper end of the support is detachably connected with an arc-shaped piece, the surface of the support and the arc-shaped piece are provided with two second screw holes, the inside of the two second screw holes are threadedly connected with second bolts, the upper end of the arc-shaped piece is fixedly connected with a screw tube, and the inside of the screw tube is threadedly connected with a third bolt.

[0018] As a preferred solution of the present invention, the side surfaces of several of the first curved pipes, the drainage pipe, the second curved pipe, the third curved pipe, the first straight pipe, the fourth curved pipe, the fifth curved pipe and the second straight pipe are clamped with clamps, and two fourth screw holes are provided at the upper end of the clamps, and the internal threads of the two fourth screw holes are connected with fourth bolts, and one end of the fourth bolt is threadedly connected with a fourth nut.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When in use, the waterproof mechanism is installed on the upper part of the amphibious vehicle. The air inlet is designed to be behind the front windshield of the vehicle, away from the water surface, so as to minimize the direct entry of water splashes, waves or rainwater. A gravity check valve is set at the bottom of the air filter box. When water enters the air inlet, the left and right valve plates in the gravity check valve rotate and fold along the valve stem, so that air can be discharged from the gravity check valve at the bottom of the air filter box. When the drainage hole at the bottom of the air filter box is blocked or damaged, so that the accumulated water cannot be discharged, in order to prevent the accumulated water from entering the engine, an air inlet water inlet prevention mechanism is arranged at the drainage pipe at the rear of the air filter box. When the accumulated water inside the pipe submerges the sensing line, the water immersion sensor The sensor senses the accumulated water and sends a signal to the driving computer. The driving computer drives the micro motor to rotate and closes the air intake channel at the same time. The accumulated water at the bottom opens the valve cover due to gravity, and the accumulated water is discharged to the outside of the vehicle to control the engine to shut down. When the accumulated water in the pipeline is lower than the sensing line, the water immersion sensor detects that the accumulated water has been discharged, opens the air intake channel and closes the drain hole to start the engine. Compared with the waterproof mechanism in the prior art, the present invention can not only achieve a waterproof effect through the cooperation of the above structures, but also achieve a double drainage operation. Therefore, the waterproof performance of the waterproof mechanism can be significantly improved, and the practicality of the waterproof mechanism can be enhanced to prevent the engine of the amphibious vehicle from being flooded.

[0021] 2. When the waterproof mechanism is in use, the filter elements in the several second straight tubes can filter the air and help avoid blockage in the second straight tubes. When the air filter box is installed in an amphibious vehicle, the two receiving plates at the bottom of the air filter box cooperate with the limit plate to play a limiting effect. When the air filter box is pressed down, the receiving plate and the stabilizing plate are deformed by force and squeeze the buffer spring and the damper. The buffer spring and the damper can achieve a shock-absorbing effect on the air filter box. In addition, several second straight tubes are mounted in the arc groove of the support. At the same time, the arc-shaped sheet cooperates with the support to clamp and fix the second straight tube. Then, the second bolt is screwed and threaded inside the spiral tube to squeeze and fix the second straight tube. The base cooperates with the support to achieve a buffering and protective effect on the second straight tube. Compared with the waterproof mechanism in the prior art, the present invention can significantly improve the shock absorption and buffering effects of the waterproof mechanism through the cooperation of the above-mentioned structures, thereby extending the service life of the waterproof mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a disassembled diagram of the filter assembly structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the air filter box of the present invention;

[0025] Figure 4 This is a disassembled diagram of the gravity check valve structure of the present invention;

[0026] Figure 5 This is a disassembled diagram of the air intake duct structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the air coarse filter element of the present invention;

[0028] Figure 7 This is a disassembly diagram of the shock absorbing mechanism of the present invention;

[0029] Figure 8 This is a disassembled diagram of the pipeline structure of the present invention;

[0030] Fig. 9 This is a schematic diagram of the drainage pipe structure of the present invention;

[0031] Fig.10 This is a disassembled diagram of the drainage assembly structure of the present invention;

[0032] Fig.11 This is a disassembled diagram of the lower structure of the drainage assembly of the present invention;

[0033] Fig.12 This is a disassembled diagram of the exhaust assembly structure of the present invention;

[0034] Fig.13 This is a disassembled diagram of the filter element structure of the present invention;

[0035] Fig.14 This is a disassembled diagram of the support structure of the present invention;

[0036] Fig.15 This is a disassembled diagram of the clamp structure of the present invention;

[0037] Fig.16 This is a schematic diagram of pipeline dimensions of the present invention;

[0038] Fig.17 Schematic diagram of the air inlet size of the present invention.

[0039] In the figure: 100, filter assembly; 101, air filter box; 102, connecting frame; 103, air coarse filter element; 104, box cover; 105, gravity check valve; 106, air intake pipe; 107, connecting cover; 108, filter screen; 109, vertical beam; 1051, valve body; 1052, valve stem; 1053, left valve plate; 1054, right valve plate; 111, card slot; 112, card block; 121, positioning slot; 122, positioning plate; 131, slide slot; 132, slider; 133, connecting flange; 141, plug strip; 142, plug slot; 151, receiving plate; 152, limit plate; 153, stabilizing plate; 154, mounting hole; 155, buffer spring; 156, damper; 10511, pin hole; 10512, pin rod; 1511, first bolt; 1512, first screw hole; 200, drainage assembly; 201, first elbow; 202, drainage pipe; 203, second elbow; 204, connector; 205, drainage outlet; 206, Valve plate; 207, rubber sealing ring; 208, snap ring; 209, micro motor; 210, motor housing; 220, housing; 230, water immersion sensor; 240, induction line; 250, knob; 260, valve cover; 270, torsion spring; 211, connecting seat; 221, receiving plate; 222, guide bar; 223, guide groove; 231, connecting shaft; 232, limiting hole; 233, limiting shaft; 241, hinge block; 242, hinge shaft; 301, exhaust assembly; 301, the first Three curved pipes; 302, first straight pipe; 303, fourth curved pipe; 304, fifth curved pipe; 305, second straight pipe; 311, clamp; 312, filter element; 313, ventilation fan; 314, fixing frame; 321, base; 322, support; 323, arc groove; 324, arc sheet; 325, second screw hole; 326, second bolt; 327, screw pipe; 328, third bolt; 331, clamp; 332, fourth screw hole; 333, fourth bolt; 334, fourth nut. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-15 The present invention provides an amphibious vehicle engine water ingress prevention mechanism, comprising a filter assembly 100, a drainage assembly 200 and an exhaust assembly 300;

[0042] The filter assembly 100 includes an air filter box 101, a connection frame 102 is installed inside the air filter box 101, a coarse air filter element 103 is embedded inside the connection frame 102, a box cover plate 104 is connected to the front end of the air filter box 101, a gravity check valve 105 is installed at the bottom of the air filter box 101, an air intake pipe 106 is installed at the upper end of the air filter box 101, one end of the air intake pipe 106 is connected to a connection cover 107, a filter screen 108 is detachably connected inside the connection cover 107, and three vertical beams 109 are equidistantly installed inside the connection frame 102;

[0043] The drainage assembly 200 comprises a first elbow 201 connected to the box cover plate 104, a drainage pipe 202 and a second elbow 203, one end of the drainage pipe 202 is connected to a connector 204, a drainage port 205 is arranged at the lower end of the drainage pipe 202, a valve plate 206, two rubber sealing rings 207 and a clamping ring 208 installed between the two rubber sealing rings 207 are respectively installed inside the drainage pipe 202, a micro motor 209 is installed at one side of the drainage pipe 202, a motor housing 210 is sleeved on the surface of the micro motor 209, a housing 220 is installed at the lower end of the drainage pipe 202, a water immersion sensor 230 is installed inside the housing 220, a sensing line 240 is connected to one side of the water immersion sensor 230, a knob 250 is connected to the surface of the water immersion sensor 230, a valve cover 260 is rotatably connected to the lower end of the drainage port 205, and a torsion spring 270 is installed at the lower end of the valve cover 260;

[0044] The exhaust component 300 includes a third curved pipe 301 connected to the second curved pipe 203, the end of the third curved pipe 301 away from the second curved pipe 203 is connected to the first straight pipe 302, one end of the first straight pipe 302 is detachably connected to the fourth curved pipe 303, one end of the fourth curved pipe 303 is detachably connected to the fifth curved pipe 304, and one end of the fifth curved pipe 304 is detachably connected to a plurality of second straight pipes 305.

[0045] In a specific embodiment, the filter assembly 100 is arranged in cooperation with the drainage assembly 200 and the exhaust assembly 300, which can not only facilitate waterproofing of the amphibious vehicle engine, but also facilitate double drainage operation through the air filter box 101, the gravity check valve 105 and the drain pipe 202, thereby significantly enhancing the waterproof effect of the waterproof mechanism, and then enhancing the practicality of the waterproof mechanism to prevent water from entering the amphibious vehicle engine. When in use, the waterproof mechanism is installed at the upper end of the amphibious vehicle, and the position of the air intake pipe 106 is designed to be behind the front windshield of the vehicle and away from the water surface, thereby minimizing the direct entry of splashes, waves or rainwater. At the same time, the gravity check valve 105 is arranged at the bottom of the air filter box 101. When water enters the air intake pipe 106, the left valve plate 1053 and the right valve plate 105 in the gravity check valve 105 are closed. 1054 rotates and folds along the valve stem 1052 to allow air to be discharged from the gravity check valve 105 at the bottom of the air filter box 101. When the drainage hole at the bottom of the air filter box 101 is blocked or damaged and the accumulated water cannot be discharged, in order to prevent the accumulated water from entering the engine, an intake duct 106 is arranged at the drainage pipe 202 at the rear of the air filter box 101. When the accumulated water inside the intake duct 106 exceeds the sensing line 240, the water immersion sensor 230 senses the accumulated water and sends a signal to the engine intake system water inlet warning system of the driving computer. The driving computer drives the micro motor 209 to rotate and closes the intake channel at the same time, causing the accumulated water at the bottom to be controlled by gravity to open the valve cover 260 to discharge the accumulated water to the outside of the vehicle. The above-mentioned structures cooperate with each other to significantly improve the waterproof and drainage performance of the waterproof mechanism, thereby enhancing the practicality of the waterproof mechanism.

[0046] Additional notes:

[0047] To calculate the area of ​​the intake duct of a V6 rotary valve engine cylinder, you need to consider the number of cylinders, the number of valves, and the valve diameter. Typically, a V6 engine has two intake valves and two exhaust valves per cylinder. The valve diameter is the diameter of the valve, usually in millimeters. To calculate the total area of ​​the intake duct, you can use the following formula:

[0048]

[0049] in:

[0050] (1) The number of cylinders refers to the number of cylinders in the engine. For a V6 engine, this is usually 6.

[0051] (2) The number of intake valves per cylinder is usually 2, because each cylinder usually has two intake valves.

[0052] (3) is the value of pi, which is approximately 3.14159.

[0053] (4) Valve diameter refers to the diameter of the intake valve, measured in millimeters.

[0054] Substituting the data, we get

[0055] The formula for calculating the cross-sectional area of ​​the intake duct is:

[0056] A=π(D / 2) 2 mm 2 (3-2)

[0057] Substituting the data, we can get the cross-sectional area of ​​the intake pipe to be 9852.03mm 2 .

[0058] The formula for calculating the cross-sectional area of ​​the air inlet position is:

[0059] A=l×w (3-3)

[0060] Substituting the data, the cross-sectional area of ​​the air inlet position is 19140mm 2 .

[0061] Through the above calculation, the cross-sectional area of ​​the air inlet > the cross-sectional area of ​​the air inlet pipe > the total area of ​​the valve air inlet duct, which proves the feasibility of selecting the size of the pipe. The pipe size is as follows: Fig.16 and Fig.17 shown.

[0062] See also Figure 2-Figure 7 The gravity check valve 105 includes a valve body 1051, the interior of the valve body 1051 is rotatably connected to a valve stem 1052, and the side surfaces of the valve stem 1052 are rotatably connected to a left valve plate 1053 and a right valve plate 1054 respectively.

[0063] In a specific embodiment, when the left valve plate 1053 and the right valve plate 1054 rotate and close around the valve stem 1052, the valve body 1051 can be controlled to be connected, so that the drainage operation can be performed.

[0064] See also Figure 2-Figure 7 Two card slots 111 are provided on both sides of the air filter box 101 , and two card blocks 112 are fixedly connected to both sides of the box cover 104 . The two card blocks 112 are both carded in the inside of the card slots 111 .

[0065] In a specific embodiment, the card block 112 is locked in the card slot 111 to improve the convenience of disassembly and assembly between the box cover 104 and the air filter box 101.

[0066] See also Figure 2-Figure 7 A plurality of positioning grooves 121 are provided on both sides of the inner wall of the air filter box 101 , and a plurality of positioning pieces 122 are fixedly connected to both sides of the connecting frame 102 , and the plurality of positioning pieces 122 are snap-fitted into the interior of the positioning grooves 121 .

[0067] In a specific embodiment, the positioning piece 122 is clamped in the positioning groove 121 to preliminarily improve the stability of the connection frame 102 and the coarse air filter element 103 when installed in the air filter box 101 .

[0068] See also Figure 2-Figure 7 A plurality of slide grooves 131 are provided at the bottom of the air filter box 101, a plurality of sliders 132 are fixedly connected to the lower end of the connecting frame 102, and the plurality of sliders 132 are all snapped into the inside of the slide grooves 131. A connecting flange 133 is provided at the upper end of the air filter box 101, and the connecting cover 107 is sealed and connected to the air filter box 101 through the connecting flange 133.

[0069] In a specific embodiment, the slider 132 is clamped in the slide groove 131 to further improve the installation stability of the connection frame 102 .

[0070] See also Figure 2-Figure 7 Two plug-in strips 141 are fixedly connected to both sides of the inner wall of the connection cover 107 , and two plug-in grooves 142 are provided at both ends of the filter screen 108 , and the two plug-in strips 141 are plugged into the inside of the plug-in grooves 142 .

[0071] In a specific embodiment, the plugging of the plug-in strip 141 into the plug-in slot 142 can improve the tightness of the filter screen 108 installed inside the connection cover 107 and facilitate disassembly as needed.

[0072] See also Figure 2-Figure 7 A receiving plate 151 is installed at both ends of the lower surface of the air filter box 101, the upper end of the receiving plate 151 is fixedly connected to a limiting plate 152, and the lower end of the receiving plate 151 is fixedly connected to a stabilizing plate 153, and two mounting holes 154 are provided on the opposite surfaces of the receiving plate 151 and the stabilizing plate 153, and buffer springs 155 are installed inside the two mounting holes 154, and a damper 156 is installed inside the buffer spring 155.

[0073] In a specific embodiment, when the air filter box 101 is pressed down by the receiving plate 151 and the stabilizing plate 153 , the presence of the buffer spring 155 in conjunction with the damper 156 can achieve a shock-absorbing effect, thereby enhancing the protective effect on the air filter box 101 .

[0074] See also Figure 2-Figure 7 A pin hole 10511 is formed at one end of the valve stem 1052 on one side of the receiving plate 151 , and a pin rod 10512 is inserted into the pin hole 10511 .

[0075] In a specific embodiment, the pin rod 10512 is inserted into the pin hole 10511 to improve the convenience of disassembly and assembly between the valve stem 1052 and the valve body 1051.

[0076] See also Figure 2-Figure 7 A first screw hole 1512 is opened inside the mounting hole 154 , and the upper and lower ends of the buffer spring 155 are fixedly connected with first bolts 1511 , and the first bolts 1511 are threadedly connected inside the first screw hole 1512 .

[0077] In a specific embodiment, the first bolt 1511 is threadedly connected inside the first screw hole 1512 to enhance the installation tightness between the buffer spring 155 and the receiving plate 151 and the stabilizing plate 153 .

[0078] See also Figure 8-Figure 11 The lower end of the drain pipe 202 is fixedly connected with a connecting seat 211, the outer shell 220 and the connecting seat 211 are clamped with each other, a receiving plate 221 is fixedly connected to one side of the drain pipe 202, and a plurality of guide bars 222 are fixedly connected to the upper end of the receiving plate 221, and a plurality of guide grooves 223 are provided at the lower end of the motor shell 210, and the plurality of guide bars 222 are slidably connected to the inside of the guide grooves 223, and connecting shafts 231 are fixedly connected to both sides of the valve plate 206, and one end of the two connecting shafts 231 is provided with a limiting hole 232, and the output end of the micro motor 209 is connected to the limiting shaft 233, and the limiting shaft 233 is inserted into the inside of the limiting hole 232, and the lower end of the drain pipe 202 is fixedly connected with a hinge block 241, and a hinge shaft 242 is fixedly connected to one side of the valve cover 260, and the hinge shaft 242 is hinged to the inside of the hinge block 241.

[0079] In a specific embodiment, the guide bar 222 is slidably connected inside the guide groove 223 to improve the installation convenience of the micro motor 209 and the drain pipe 202. The limiting shaft 233 is inserted into the limiting hole 232. When the micro motor 209 rotates with the limiting shaft 233, the valve cover 260 can be rotated to open the drain outlet 205, thereby further achieving the drainage effect. The hinge shaft 242 is hinged inside the hinge block 241 to improve the smoothness of the rotation of the valve cover 260.

[0080] See also Figure 9-Figure 15 The front end of the fifth bent pipe 304 is fixedly connected with a clamping head 311, one end of the second straight pipe 305 is clamped inside the clamping head 311, and a filter element 312, a ventilation fan 313 and a fixing frame 314 are respectively installed inside the plurality of second straight pipes 305, and a base 321 is installed at the lower end of the plurality of second straight pipes 305, and a support 322 is fixedly connected to the upper end of the base 321, and an arc groove 323 is provided at the upper end of the support 322, and an arc piece 324 is detachably connected to the upper end of the support 322, and two second screw holes 325 are provided on the surfaces of the support 322 and the arc piece 324, and second bolts 326 are threadedly connected to the inside of the two second screw holes 325, and a screw tube 327 is fixedly connected to the upper end of the arc piece 324, and a third bolt 328 is threadedly connected to the inside of the screw tube 327.

[0081] In a specific embodiment, the presence of the filter element 312 can filter impurities in the air and water to avoid clogging inside the waterproof mechanism, and can further achieve an exhaust effect in conjunction with the ventilation fan 313. The support 322 and the base 321 can provide a buffering and protective effect for a number of second straight tubes 305, thereby extending the service life of the waterproof mechanism. By screwing the second bolt 326 threadedly connected inside the screw tube 327, the second straight tube 305 can be squeezed and fixed, thereby improving the connection tightness between the support 322 and the second straight tube 305.

[0082] See also Figure 8-Figure 15 The side surfaces of several first curved pipes 201, drainage pipes 202, second curved pipes 203, third curved pipes 301, first straight pipes 302, fourth curved pipes 303, fifth curved pipes 304 and second straight pipes 305 are all clamped with clamps 331, and the upper end of the clamps 331 is provided with two fourth screw holes 332, the internal threads of the two fourth screw holes 332 are connected with fourth bolts 333, and one end of the fourth bolt 333 is threadedly connected with a fourth nut 334.

[0083] In a specific embodiment, threaded connection of the first curved pipe 201, the drain pipe 202, the second curved pipe 203, the third curved pipe 301, the first straight pipe 302, the fourth curved pipe 303, the fifth curved pipe 304 and the second straight pipe 305 by the clamp 331 can enhance the convenience of disassembly and assembly of the waterproof mechanism.

[0084] Working principle: When in use, the waterproof mechanism is installed on the upper end of the amphibious vehicle, and the position of the air intake duct 106 is designed to be behind the front windshield of the vehicle and away from the water surface to minimize the direct entry of splashes, waves or rainwater. At the same time, the gravity check valve 105 is set at the bottom of the air filter box 101. When water enters the air intake duct 106, the left valve plate 1053 and the right valve plate 1054 in the gravity check valve 105 rotate and fold along the valve stem 1052 to allow air to be discharged from the gravity check valve 105 at the bottom of the air filter box 101. When the drainage hole at the bottom of the air filter box 101 is blocked or damaged and the accumulated water cannot be discharged, in order to prevent To prevent accumulated water from entering the engine, an intake duct 106 is arranged at the drain pipe 202 at the rear of the air filter box 101. When the accumulated water inside the intake duct 106 covers the sensing line 240, the water immersion sensor 230 senses the accumulated water and sends a signal to the driving computer engine intake system water ingress warning system. The driving computer drives the micro motor 209 to rotate and at the same time closes the intake channel, causing the accumulated water at the bottom to control the valve cover 260 under the action of gravity to open the protective shell and discharge the accumulated water to the outside of the vehicle. The above-mentioned structures cooperate with each other to significantly improve the waterproof and drainage performance of the waterproof mechanism, thereby enhancing the practicability of the waterproof mechanism and preventing water from entering the engine of the amphibious vehicle.

[0085] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An amphibious vehicle engine water ingress prevention mechanism, characterized in that: include: A filter assembly (100), the filter assembly (100) comprising an air filter box (101), a connection frame (102) being installed inside the air filter box (101), a coarse air filter element (103) being embedded inside the connection frame (102), a box cover plate (104) being snap-connected at the front end of the air filter box (101), a gravity check valve (105) being installed at the bottom of the air filter box (101), an air intake pipe (106) being installed at the upper end of the air filter box (101), one end of the air intake pipe (106) being connected to a connection cover (107), a filter screen (108) being detachably connected inside the connection cover (107), and three vertical beams (109) being equidistantly installed inside the connection frame (102); A drainage assembly (200), the drainage assembly (200) comprising a first curved pipe (201) connected to a box cover plate (104), a drainage pipe (202) and a second curved pipe (203), one end of the drainage pipe (202) being connected to a connector (204), a lower end of the drainage pipe (202) being provided with a drainage port (205), a valve plate (206), two rubber sealing rings (207) and a clamping ring (208) installed between the two rubber sealing rings (207) being installed inside the drainage pipe (202), and the drainage pipe (202) being provided with a valve plate (206), two rubber sealing rings (207) and a clamping ring (208) installed between the two rubber sealing rings (207). A micro motor (209) is installed on one side, a motor housing (210) is sleeved on the surface of the micro motor (209), a housing (220) is installed on the lower end of the drain pipe (202), a water sensor (230) is installed inside the housing (220), a sensing line (240) is connected to one side of the water sensor (230), a knob (250) is connected to the surface of the water sensor (230), a valve cover (260) is rotatably connected to the lower end of the drain port (205), and a torsion spring (270) is installed on the lower end of the valve cover (260); An exhaust assembly (300), the exhaust assembly (300) comprising a third curved pipe (301) connected to a second curved pipe (203), one end of the third curved pipe (301) away from the second curved pipe (203) being connected to a first straight pipe (302), one end of the first straight pipe (302) being detachably connected to a fourth curved pipe (303), one end of the fourth curved pipe (303) being detachably connected to a fifth curved pipe (304), and one end of the fifth curved pipe (304) being detachably connected to a plurality of second straight pipes (305).

2. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: The gravity check valve (105) comprises a valve body (1051), the interior of the valve body (1051) is rotatably connected to a valve stem (1052), and the side surfaces of the valve stem (1052) are rotatably connected to a left valve plate (1053) and a right valve plate (1054).

3. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: Two card slots (111) are provided on both sides of the air filter box (101), and two card blocks (112) are fixedly connected to both sides of the box cover plate (104), and the two card blocks (112) are both carded inside the card slots (111).

4. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: A plurality of positioning grooves (121) are provided on both sides of the inner wall of the air filter box (101), a plurality of positioning plates (122) are fixedly connected to both sides of the connection frame (102), and the plurality of positioning plates (122) are clamped inside the positioning grooves (121).

5. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: The bottom of the air filter box (101) is provided with a plurality of slide grooves (131); the lower end of the connection frame (102) is fixedly connected with a plurality of sliders (132); the plurality of sliders (132) are all snap-fitted into the interior of the slide grooves (131); the upper end of the air filter box (101) is provided with a connection flange (133); the connection cover (107) is sealedly connected to the air filter box (101) via the connection flange (133).

6. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: Two plug-in strips (141) are fixedly connected to both sides of the inner wall of the connection cover (107), two plug-in slots (142) are provided at both ends of the filter screen (108), and the two plug-in strips (141) are plugged into the inside of the plug-in slots (142).

7. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: A receiving plate (151) is installed at both ends of the lower surface of the air filter box (101); the upper end of the receiving plate (151) is fixedly connected to a limiting plate (152); the lower end of the receiving plate (151) is fixedly connected to a stabilizing plate (153); two mounting holes (154) are provided on the opposite surfaces of the receiving plate (151) and the stabilizing plate (153); buffer springs (155) are installed inside the two mounting holes (154); and a damper (156) is installed inside the buffer spring (155).

8. The mechanism for preventing engine water intrusion of an amphibious vehicle according to claim 7, characterized in that: One end of the valve stem (1052) on one side of the receiving plate (151) is provided with a pin hole (10511), and a pin rod (10512) is inserted into the pin hole (10511).

9. The amphibious vehicle engine water ingress prevention mechanism according to claim 8, characterized in that: A first screw hole (1512) is provided inside the mounting hole (154), and the upper and lower ends of the buffer spring (155) are fixedly connected with first bolts (1512), and the first bolts (1512) are threadedly connected inside the first screw hole (1512).

10. The amphibious vehicle engine water ingress prevention mechanism according to claim 1, characterized in that: The lower end of the drain pipe (202) is fixedly connected to a connecting seat (211), the housing (220) and the connecting seat (211) are mutually clamped, one side of the drain pipe (202) is fixedly connected to a receiving plate (221), the upper end of the receiving plate (221) is fixedly connected to a plurality of guide bars (222), the lower end of the motor housing (210) is provided with a plurality of guide grooves (223), the plurality of guide bars (222) are slidably connected to the inside of the guide grooves (223), and the two sides of the valve plate (206) are Both are fixedly connected with a connecting shaft (231), one end of each of the two connecting shafts (231) is provided with a limiting hole (232), the output end of each of the micro motors (209) is connected with a limiting shaft (233), the limiting shaft (233) is inserted into the inside of the limiting hole (232), the lower end of the drain pipe (202) is fixedly connected with a hinge block (241), one side of the valve cover (260) is fixedly connected with a hinge shaft (242), and the hinge shaft (242) is hinged inside the hinge block (241).

Images