Chassis for a motorhome

Abstract

The present invention discloses a chassis for a motorhome, which belongs to the field of automobile engineering, and comprises a frame and two rotating shafts, each of which is provided with a wheel, and the wheel is provided with a tire pressure detection module, wherein the tire pressure detection module is a prior art and is not described in detail; the frame is symmetrically provided with slide grooves, a buffer pad is fixedly installed on the top wall of the slide groove, a mounting frame is slidably installed in the slide groove, and the rotating shaft is rotatably installed on the mounting frame, so that the wheel can move up and down, and a socket is provided on the side wall of the slide groove, and a limit block is slidably installed in the socket, and the position of the mounting frame can be limited by extending the limit block from the socket, and the mounting frame is fixed in the slide groove to enable the wheel to work normally; the scheme can quickly move down the height of another tire when one of the tires bursts by arranging the limit block and the hydraulic rod, thereby reducing the height of the entire frame, so that when the wheel hub of the burst tire hits the ground, the reaction force received by the frame can be reduced, thereby playing a role in protecting the frame.

Description

Technical Field

[0001] The present invention relates to the field of automobile engineering, and more particularly to a chassis for a recreational vehicle. Background Art

[0002] RV is a fashionable vehicle type introduced from abroad. Its home facilities include bedding, stoves, refrigerators, cabinets and other furniture and electrical appliances. RV is a fashionable product that integrates clothing, food, housing and transportation, realizing travel in life and life while traveling. Trailer RV is a branch of RV. Unlike self-propelled RV, trailer RV has no power of its own and requires an additional vehicle to tow it. The trailer chassis is an indispensable and important part of its use.

[0003] RVs usually carry a lot of luggage, equipment, etc. When the weight distribution inside the RV is uneven, the weight is mainly concentrated on one side, which will cause excessive pressure on the tire on that side. As the driving distance increases, it is easy to cause the tire to explode;

[0004] When a trailer RV has a flat tire, the supporting force on one side of the vehicle is instantly lost, causing the car body to tilt toward the side of the flat tire under the action of gravity. At this time, the wheel hub loses the cushioning and supporting function of the tire and will directly contact the ground and produce a strong impact. This impact will not only cause damage to the wheel hub itself, but the impact force generated by the wheel hub hitting the ground will be quickly transmitted to the frame through the axle and suspension system. When the impact force is too great, it will cause the frame to deform, bend or even break, resulting in high repair costs.

[0005] For this reason, a chassis for a recreational vehicle is proposed. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a chassis for a motorhome, which can reduce the impact force on the chassis and protect the chassis when a tire bursts.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A chassis for a motorhome, including a chassis for a motorhome, including a frame and two rotating shafts, each rotating shaft is provided with a wheel, and the wheel is provided with a tire pressure detection module, wherein the tire pressure detection module is a prior art and will not be described in detail;

[0009] The frame is symmetrically provided with slide grooves, a buffer pad is fixedly installed on the top wall of the slide groove, a mounting frame is slidably installed in the slide groove, and a rotating shaft is rotatably installed on the mounting frame, so that the wheel can move up and down, and a socket is provided on the side wall of the slide groove, and a limit block is slidably installed in the socket. The position of the mounting frame can be limited by extending the limit block from the socket, and the mounting frame is fixed in the slide groove to make the wheel work normally; hydraulic rods are symmetrically provided on the frame, and a control module cooperating with the two hydraulic rods is provided on the frame; when the tire pressure detection module detects that a wheel on one side has a tire burst, the tire pressure is The detection module sends a signal to the control module. At this time, the control module controls the hydraulic rod on the side of the tire that has not burst to shrink. The output end of the hydraulic rod is connected to the limit block, so the shrinking hydraulic rod can drive the limit block to retract into the socket. At this time, under the action of the frame's own gravity, the frame moves down as a whole, and the mounting frame hits the buffer pad, so that the height of the entire frame can be reduced, reducing the gravitational potential energy of the frame. At this time, if the wheel hub contacts the ground, the impact force between the wheel hub and the ground can be reduced, that is, the impact force on the frame is reduced, which plays a role in protecting the frame;

[0010] An elastic member is installed between the side wall of the slide and the mounting frame, so the mounting frame can be fixed in the slide by the elastic member. A groove is provided on the bottom wall of the limit block, and a metal airbag is fixedly installed in the groove. When the metal airbag expands, the thrust applied to the mounting frame is greater than the elastic force of the elastic member, so the mounting frame can be pushed downward, so that the mounting frame is out of contact with the limit block. An air pump for supplying air to the metal airbag is provided on the frame, and the air pump is electrically connected to the hydraulic rod. Therefore, when any hydraulic rod is powered on, the air pump starts to work, so that the wheel in a tire burst state can be quickly pushed to contact the ground, and the mounting frame is out of contact with the limit block.

[0011] An installation groove is provided on the side wall of the slide groove, and a friction plate is provided in the installation groove. When the wheel hub of the wheel in a tire burst state contacts the ground, the frame moves downward, and the installation frame will move upward along the slide groove. At this time, a relative displacement occurs between the installation frame and the friction plate, and the friction plate is hindered during the downward movement of the frame, thereby reducing the downward movement speed of the frame. Therefore, when the limit block hits the installation frame, the impact force on the limit block can be reduced, thereby improving the protection effect of the frame; an elastic airbag is installed between the friction plate and the side wall of the installation groove, and the friction plate is slidably installed in the installation groove A first pressure relief valve is embedded on the output end of the metal airbag, and the output end of the first pressure relief valve is connected to the elastic airbag. Therefore, after the mounting frame is pushed downward to the maximum by the metal airbag, the metal airbag is exhausted through the first pressure relief valve. At this time, the gas discharged from the first pressure relief valve causes the elastic airbag to expand, thereby pushing the friction plate to closely contact with the mounting frame, thereby increasing the friction between the side wall of the slide groove and the mounting frame. Therefore, when the mounting frame drives the limit block to hit the mounting frame, the impact force on the frame can be reduced, further improving the protection effect of the frame.

[0012] Furthermore, a three-way valve is fixedly installed on the output end of the air pump, and the three-way valve is a one-way valve. The first output end of the three-way valve is connected to the metal airbag on the left side of the frame, and the second output end of the three-way valve is connected to the metal airbag on the right side of the frame, and the three-way valve is controlled by a control module; when the wheel on the left side of the frame has a tire burst, the control module controls the first output end of the three-way valve to open, and at this time, the gas can make the wheel hub in the tire burst state quickly contact with the ground. Similarly, when the wheel on the right side of the frame has a tire burst, the second output end of the three-way valve opens.

[0013] Furthermore, in hot weather, the RV is exposed to the sun for a long time, and its frame and body will absorb a large amount of solar radiation, causing the temperature to rise rapidly; a cavity is opened on the frame, and clean water is filled in the cavity, and the clean water is used to absorb the heat of the frame; because the long-term high temperature state will affect the structural strength of the frame, making it fragile and prone to deformation or fracture, especially when driving at high speed or passing through bumpy roads, this risk is higher, so by loading clean water with a large specific heat capacity characteristic into the cavity of the frame, it can effectively absorb and disperse the heat of the frame during operation. The excess heat generated ensures that the frame can still maintain its original strength and stability in a high temperature environment; an inlet valve and a drain valve are installed on the side wall of the cavity, so the cavity can be connected to the water tank for domestic water carried by the RV through the inlet valve and the drain valve, which is equivalent to expanding the water storage capacity of the cavity, thereby improving the heat absorption effect; and a stainless steel protective cover is embedded on the side wall of the cavity. Since stainless steel has strong corrosion resistance, the stainless steel protective cover can protect the frame and prevent the frame from rusting and preventing water from being contaminated.

[0014] Furthermore, a drain pipe is fixedly installed on the bottom wall of the cavity, and a first solenoid valve is embedded in the drain pipe. The first solenoid valve is electrically connected to the air pump. Therefore, when a tire on one side bursts, the first solenoid valve is also opened. At this time, the water carried in the RV water tank and the water in the cavity are discharged through the first solenoid valve, reducing the weight borne by the frame. Therefore, when the limit block hits the mounting frame, the impact force on the frame is reduced, further improving the protection effect of the frame.

[0015] Furthermore, two drainage pipes are symmetrically arranged on the frame, and each drainage pipe is located between the corresponding wheel and the front end of the frame, so during driving, the wheel always rolls over the projection of the drainage pipe on the ground; a second pressure relief valve is embedded on the side wall of the elastic airbag, and the output end of the second pressure relief valve extends into the cavity, so when the elastic airbag is expanded to the maximum, the air is exhausted through the second pressure relief valve, and at this time, the impact force of the gas and moisture discharged from the drainage pipe on the ground is increased, the effect of cleaning the ground is achieved, the bumpiness of the wheel hub and the wheel during driving on the ground is reduced, and the protection effect of the frame is improved.

[0016] Furthermore, the drain pipe is arranged at an angle, so that when the water discharged from the drain pipe contacts the impurities on the ground, it can provide a horizontal thrust to the impurities, thereby improving the cleaning effect of the impurities.

[0017] Furthermore, the friction plate has a porous hollow structure, which allows air to circulate freely, helping the friction plate to dissipate heat quickly and preventing the friction plate from becoming soft or failing due to overheating. At the same time, the hollow structure can form more edges and corners on the contact surface. These irregular surfaces can provide additional friction, thereby enhancing the friction deceleration effect. A third pressure relief valve that cooperates with the friction plate is embedded on the output end of the elastic airbag. When the elastic airbag pushes the friction plate to the maximum, the elastic airbag is exhausted through the third pressure relief valve. When the gas exhausted from the third pressure relief valve blows toward the friction plate, the heat dissipation effect of the friction plate is improved, thereby ensuring the friction of the friction plate. The effect is as follows; when the metal airbag is not inflated, that is, during normal driving of the vehicle, the side wall of the mounting bracket covers the surface of the mounting groove, and the mounting groove is blocked and cannot be connected to the outside world; when the wheel has a tire burst, when the mounting bracket pushed downward by the metal airbag contacts the corresponding limit block again, the mounting groove is blocked again, and the third pressure relief valve cannot exhaust gas at this time. Therefore, the gas in the elastic airbag is discharged through the second pressure relief valve, thereby increasing the impact force of the gas and moisture discharged from the drain pipe on the ground, achieving the effect of cleaning the ground, reducing the bumpiness of the wheel hub and the wheel during ground driving, and playing a role in improving the protection effect of the frame.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This solution provides a limit block and a hydraulic rod, so that when one tire bursts, the height of the other tire can be quickly lowered, thereby reducing the overall height of the frame. Therefore, when the wheel hub of the burst tire hits the ground, the reaction force on the frame can be reduced, thereby playing a role in protecting the frame;

[0020] (2) This solution provides a metal airbag, an air pump, and a friction plate, which can make the wheel hub with a punctured tire move down quickly and contact the ground. Then, under the action of the friction plate, the speed at which the frame moves down along the mounting frame is reduced, thereby reducing the impact force on the frame and improving the protection effect on the frame.

[0021] (3) This solution provides cavities and drainage pipes to clean the ground in the event of a tire blowout, thereby reducing the degree of vibration of the frame and further improving the protection effect of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the combined structure of the vehicle frame, the slide slot and the mounting frame of the present invention;

[0025] Figure 4 It is a schematic cross-sectional structural diagram of the frame of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 6 It is a schematic diagram of a top view and cross-section structure of a frame of the present invention;

[0028] Figure 7 The figure is a working flow diagram of the tire pressure detection module and the control module of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Frame; 2. Rotating shaft; 3. Tire pressure detection module; 4. Slide; 5. Buffer pad; 6. Mounting frame; 7. Limit block; 8. Hydraulic rod; 9. Control module; 10. Elastic part; 11. Metal airbag; 12. Air pump; 13. Friction plate; 14. Elastic airbag; 15. First pressure relief valve; 16. Three-way valve; 17. Water inlet valve; 18. Drain valve; 19. Protective cover; 20. Drain pipe; 21. First solenoid valve; 22. Second pressure relief valve; 23. Third pressure relief valve; 24. Wheel. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention. Embodiment 1:

[0032] See also Figures 1 to 7 A chassis for a motorhome includes a frame 1 and two shafts 2, each shaft 2 is provided with a wheel 24, and the wheel 24 is provided with a tire pressure detection module 3, wherein the tire pressure detection module 3 is a prior art and will not be described in detail;

[0033] The frame 1 is symmetrically provided with a slide groove 4, a buffer pad 5 is fixedly installed on the top wall of the slide groove 4, a mounting frame 6 is slidably installed in the slide groove 4, and the rotating shaft 2 is rotatably installed on the mounting frame 6, so that the wheel 24 can move up and down, and a socket is provided on the side wall of the slide groove 4, and a limit block 7 is slidably installed in the socket. By extending the limit block 7 from the socket, the position of the mounting frame 6 can be limited, and the mounting frame 6 is fixed in the slide groove 4, so that the wheel 24 can work normally; the frame 1 is symmetrically provided with hydraulic rods 8, and the frame 1 is provided with a control module 9 that cooperates with the two hydraulic rods 8; when the tire pressure detection module 3 detects that the wheel 24 on one side has exploded When the tire is flat, the tire pressure detection module 3 sends a signal to the control module 9. At this time, the control module 9 controls the hydraulic rod 8 on the side of the tire that has not burst to shrink. The output end of the hydraulic rod 8 is connected to the limit block 7, so the shrinking hydraulic rod 8 can drive the limit block 7 to retract into the jack. At this time, under the action of the frame 1's own gravity, the frame 1 moves downward as a whole, and the mounting frame 6 hits the buffer pad 5, so that the height of the entire frame 1 can be reduced, and the gravitational potential energy of the frame 1 can be reduced. At this time, if the wheel hub contacts the ground, the impact force between the wheel hub and the ground can be reduced, that is, the impact force on the frame 1 is reduced, which plays a role in protecting the frame 1;

[0034] An elastic member 10 is installed between the side wall of the slide 4 and the mounting frame 6, so the mounting frame 6 can be fixed in the slide 4 by the elastic member 10. A groove is provided on the bottom wall of the limit block 7, and a metal airbag 11 is fixedly installed in the groove. When the metal airbag 11 expands, the thrust applied to the mounting frame 6 is greater than the elastic force of the elastic member 10, so the mounting frame 6 can be pushed downward, so that the mounting frame 6 is out of contact with the limit block 7. An air pump 12 for supplying air to the metal airbag 11 is provided on the frame 1. The air pump 12 is electrically connected to the hydraulic rod 8. Therefore, when any one of the hydraulic rods 8 is powered on, the air pump 12 starts to work, so that the wheel 24 in the tire burst state can be quickly pushed to contact the ground, and the mounting frame 6 is out of contact with the limit block 7.

[0035] An installation groove is provided on the side wall of the slide groove 4, and a friction plate 13 is provided in the installation groove. When the hub of the wheel 24 in a tire burst state contacts the ground, the frame 1 moves downward, and the mounting frame 6 moves upward along the slide groove 4. At this time, a relative displacement occurs between the mounting frame 6 and the friction plate 13, and the friction plate 13 is hindered during the downward movement of the frame 1, thereby reducing the downward movement speed of the frame 1. Therefore, when the limit block 7 hits the mounting frame 6, the impact force on the limit block 7 can be reduced, thereby improving the protection effect of the frame 1; an elastic airbag 14 is installed between the friction plate 13 and the side wall of the installation groove, and the friction plate 13 is slidably installed in the installation groove. A first pressure relief valve 15 is embedded on the output end of the metal airbag 11, and the output end of the first pressure relief valve 15 is connected to the elastic airbag 14. Therefore, after the mounting frame 6 is pushed downward to the maximum by the metal airbag 11, the metal airbag 11 is exhausted through the first pressure relief valve 15. At this time, the gas discharged from the first pressure relief valve 15 causes the elastic airbag 14 to expand, thereby pushing the friction plate 13 to be in close contact with the mounting frame 6, thereby increasing the friction between the side wall of the slide groove 4 and the mounting frame 6. Therefore, when the mounting frame 6 drives the limit block 7 to hit the mounting frame 6, the impact force on the frame 1 can be reduced, further improving the protection effect of the frame 1.

[0036] like Figure 2 As shown, a three-way valve 16 is fixedly installed on the output end of the air pump 12, and the three-way valve 16 is a one-way valve. The first output end of the three-way valve 16 is connected to the metal airbag 11 on the left side of the frame 1, and the second output end of the three-way valve 16 is connected to the metal airbag 11 on the right side of the frame 1, and the three-way valve 16 is controlled by the control module 9; when the wheel 24 on the left side of the frame 1 has a tire burst, the control module 9 controls the first output end of the three-way valve 16 to open, and at this time, the gas can make the wheel hub in the tire burst state quickly contact with the ground. Similarly, when the wheel 24 on the right side of the frame 1 has a tire burst, the second output end of the three-way valve 16 is opened.

[0037] like Figure 4 , Figure 6As shown, in hot weather, the RV is exposed to the sun for a long time, and its frame 1 and body will absorb a large amount of solar radiation energy, causing the temperature to rise rapidly; a cavity is opened on the frame 1, and clean water is filled in the cavity, and the clean water is used to absorb the heat of the frame 1; due to being in a high temperature state for a long time, the structural strength of the frame 1 will be affected, making it fragile and prone to deformation or fracture, especially when driving at high speed or passing through bumpy roads, the risk is higher, so by filling the cavity of the frame 1 with clean water with a large specific heat capacity characteristic, it can effectively absorb and disperse the excess heat generated by the frame 1 during operation. Heat, thereby ensuring that the frame 1 can still maintain its original strength and stability in a high temperature environment; an inlet valve 17 and a drain valve 18 are installed on the side wall of the cavity, so the cavity can be connected to the water tank for domestic water carried by the RV through the inlet valve 17 and the drain valve 18, thereby expanding the water storage capacity of the cavity, thereby improving the heat absorption effect; and a stainless steel protective cover 19 is embedded on the side wall of the cavity. Since stainless steel has strong corrosion resistance, the stainless steel protective cover 19 can protect the frame 1 and prevent the frame 1 from rusting and preventing water from being contaminated.

[0038] like Figure 4 As shown, a drain pipe 20 is fixedly installed on the bottom wall of the cavity, and a first solenoid valve 21 is embedded in the drain pipe 20. The first solenoid valve 21 is electrically connected to the air pump 12. Therefore, when a wheel 24 on one side has a tire burst, the first solenoid valve 21 is also opened. At this time, the water carried in the RV water tank and the water in the cavity are discharged through the first solenoid valve 21, reducing the weight borne by the frame 1. Therefore, when the limit block 7 hits the mounting frame 6, the impact force on the frame 1 is reduced, further improving the protection effect of the frame 1.

[0039] like Figure 2 As shown, two drain pipes 20 are symmetrically arranged on the frame 1, and each drain pipe 20 is located between the corresponding wheel 24 and the front end of the frame 1, so during driving, the wheel 24 always rolls over the projection of the drain pipe 20 on the ground; a second pressure relief valve 22 is embedded on the side wall of the elastic airbag 14, and the output end of the second pressure relief valve 22 extends into the cavity, so when the elastic airbag 14 is expanded to the maximum, the air is exhausted through the second pressure relief valve 22, at this time, the impact force of the gas and moisture exhausted from the drain pipe 20 on the ground is increased, the effect of cleaning the ground is achieved, the bumpiness of the wheel hub and the wheel 24 during driving on the ground is reduced, and the protection effect of the frame 1 is improved.

[0040] like Figure 4 As shown, the drain pipe 20 is arranged at an angle, so when the water discharged from the drain pipe 20 contacts the impurities on the ground, it can provide a horizontal thrust to the impurities, thereby improving the cleaning effect of the impurities.

[0041] like Figure 5As shown, the friction plate 13 is a porous hollow structure. The hollow structure allows air to circulate freely, which helps the friction plate 13 to dissipate heat quickly and prevents the friction plate 13 from becoming soft or failing due to overheating. At the same time, the hollow structure can form more edges and corners on the contact surface. These irregular surfaces can provide additional friction, thereby enhancing the friction deceleration effect. A third pressure relief valve 23 that cooperates with the friction plate 13 is embedded on the output end of the elastic airbag 14. When the elastic airbag 14 pushes the friction plate 13 to the maximum extent, the elastic airbag 14 is exhausted through the third pressure relief valve 23. When the gas exhausted from the third pressure relief valve 23 blows toward the friction plate 13, the heat dissipation effect of the friction plate 13 is improved, which plays a role in ensuring the friction plate 1 3 friction effect; when the metal airbag 11 is not inflated, that is, during the normal driving of the vehicle, the side wall of the mounting frame 6 covers the surface of the mounting groove, and the mounting groove is blocked and cannot be connected to the outside world; when the wheel 24 has a tire burst, when the mounting frame 6 pushed downward by the metal airbag 11 contacts the corresponding limit block 7 again, the mounting groove is blocked again, and the third pressure relief valve 23 cannot exhaust at this time, so the gas in the elastic airbag 14 is discharged through the second pressure relief valve 22, thereby increasing the impact force of the gas and moisture discharged from the drain pipe 20 on the ground, achieving the effect of cleaning the ground, reducing the bumpiness of the wheel hub and the wheel 24 during the ground driving process, and playing a role in improving the protection effect of the frame 1.

[0042] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chassis for a motorhome, comprising a frame (1) and two rotating shafts (2), each of the rotating shafts (2) being provided with a wheel (24), and each of the wheels (24) being provided with a tire pressure detection module (3); Features: The frame (1) is symmetrically provided with slide grooves (4), a buffer pad (5) is fixedly mounted on the top wall of the slide groove (4), a mounting frame (6) is slidably mounted in the slide groove (4), the rotating shaft (2) is mounted on the mounting frame (6), a plug hole is provided on the side wall of the slide groove (4), a limit block (7) is slidably mounted in the plug hole, a hydraulic rod (8) is symmetrically provided on the frame (1), and a control module (9) cooperating with the hydraulic rod (8) is provided on the frame (1); the output end of the hydraulic rod (8) is connected to the limit block (7); An elastic member (10) is installed between the side wall of the slide groove (4) and the mounting frame (6); a groove is provided on the bottom wall of the limit block (7); a metal airbag (11) is fixedly installed in the groove; an air pump (12) for supplying air to the metal airbag (11) is provided on the vehicle frame (1); the air pump (12) is electrically connected to the hydraulic rod (8); A mounting groove is provided on the side wall of the slide groove (4), and a friction plate (13) is provided in the mounting groove; an elastic air bag (14) is installed between the friction plate (13) and the side wall of the mounting groove, and the friction plate (13) is slidably installed in the mounting groove; a first pressure relief valve (15) is embedded on the output end of the metal air bag (11), and the output end of the first pressure relief valve (15) is communicated with the elastic air bag (14); A three-way valve (16) is fixedly mounted on the output end of the air pump (12), and the three-way valve (16) is a one-way valve, a first output end of the three-way valve (16) is in communication with the metal airbag (11) on the left side of the frame (1), a second output end of the three-way valve (16) is in communication with the metal airbag (11) on the right side of the frame (1), and the three-way valve (16) is controlled by a control module (9); The frame (1) is provided with a cavity, in which clean water is filled, and the clean water is used to absorb heat from the frame (1); a water inlet valve (17) and a water drain valve (18) are installed on the side wall of the cavity; A drainage pipe (20) is fixedly mounted on the bottom wall of the cavity, a first electromagnetic valve (21) is embedded in the drainage pipe (20), and the first electromagnetic valve (21) is electrically connected to the air pump (12); Two drainage pipes (20) are symmetrically arranged on the vehicle frame (1), and each of the drainage pipes (20) is located between the corresponding wheel (24) and the front end of the vehicle frame (1); a second pressure relief valve (22) is embedded on the side wall of the elastic airbag (14), and an output end of the second pressure relief valve (22) extends into the cavity; The friction plate (13) is a porous hollow structure, and a third pressure relief valve (23) cooperating with the friction plate (13) is embedded on the output end of the elastic airbag (14).

2. A chassis for a motorhome according to claim 1, characterized in that: A protective sleeve (19) made of stainless steel is embedded on the side wall of the cavity.

3. The chassis for a motorhome according to claim 1, characterized in that: The drainage pipe (20) is arranged obliquely.

Images