A convenient loading and unloading mechanism for RV

Abstract

The present invention relates to the technical field of loading and unloading of recreational vehicles, and specifically to a convenient loading and unloading mechanism for recreational vehicles, comprising a fixed frame installed on a chassis of the recreational vehicle, the fixed frame being provided with a suspension mechanism that enables the recreational vehicle to move up and down stably, the fixed frame being provided with a buffer mechanism that assists the suspension mechanism in providing a buffering effect when the front and rear ends of the recreational vehicle are not in the same horizontal plane when the recreational vehicle lands, the suspension mechanism comprising a fixed outer plate fixed to a side of the fixed frame, a fixed inner plate connected to the fixed outer plate being fixed to an inner side of the fixed frame; an object of the present invention is to provide a convenient loading and unloading mechanism for recreational vehicles, which can keep the recreational vehicle in a stable suspended state in advance, avoid the recreational vehicle from being parked in a pothole on the ground, and because of the unsaturated state of the recreational vehicle tires after being squeezed, the recreational vehicle is in a skewed state before being forked by a forklift, which makes it difficult to maintain a balanced and stable state when the forklift forks and rises, which makes it impossible for it to rise stably and is easy to cause damage to the recreational vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of loading and unloading a recreational vehicle, and in particular to a convenient loading and unloading mechanism for a recreational vehicle. Background Art

[0002] RV is a fashionable product that integrates "clothing, food, housing and transportation" and realizes "travel in life and life in travel". RV is widely used in my country, but because RV has no power source, when it needs to be transported, it is necessary to use loading and unloading tools to achieve it. A more preferred transportation method is to first lift the RV with a hydraulic jack, and then use a forklift to move the RV to a carrier vehicle after the RV reaches a certain height, that is, the carrier vehicle can be used to transport the RV. However, when the RV is lifted by a forklift, if the RV does not maintain a horizontal and stable state when the forklift lifts the RV, the rising process of the RV will be difficult to balance, and it will be unable to rise smoothly, and it is easy to cause damage to the RV. Summary of the invention

[0003] The purpose of the present invention is to provide a convenient loading and unloading mechanism for a motorhome, which can keep the motorhome in a stable suspended state in advance, avoid the motorhome from being parked in potholes on the ground, and because of the unsaturated state of the motorhome tires after being squeezed, the motorhome is in a skewed state before being lifted by a forklift, which makes it difficult to maintain a balanced and stable state when the forklift lifts it up, resulting in the motorhome being unable to rise smoothly and easily causing damage to the motorhome.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a convenient loading and unloading mechanism for a motorhome, comprising a fixed frame installed on the chassis of the motorhome, the fixed frame being provided with a suspension mechanism that enables the motorhome to move up and down smoothly, the fixed frame being provided with a buffer mechanism that assists the suspension mechanism and provides a buffering effect when the front and rear ends of the motorhome are not in the same horizontal plane when the motorhome lands, the suspension mechanism comprising a fixed outer plate fixed to the side of the fixed frame, a fixed inner plate connected to the fixed outer plate being fixed to the inner side of the fixed frame, a hydraulic rod being provided on the fixed inner plate, a crossbeam being provided at the output end of the hydraulic rod, the crossbeam being laterally erected below the fixed frame, connecting rods being provided at both ends of the crossbeam, and a support frame being provided at one end of the connecting rod being located outside the tire of the motorhome; while the output end of the hydraulic rod drives the crossbeam to move downward, the crossbeam drives the support frame to move downward through the connecting rod to suspend the motorhome; and a perforation for forklift operation is provided on the fixed frame; the buffer mechanism comprises a bottom plate fixed below the chassis of the motorhome The cam is provided with a spring which is arranged inside the piston cylinder, and a main shaft is arranged on the piston cylinder, and an auxiliary wheel is arranged on one end of the main shaft, and a push piece is fixed on the surface of the main shaft, and one side of the push piece is fixedly connected with the spring, and when the push piece moves inside the piston cylinder, the gas inside the piston cylinder is pushed to move; the piston cylinder is connected with a conversion tube which is connected with another piston cylinder, one end of the conversion tube is located above the push piece, and the other end of the conversion tube is located below the push piece inside the other piston cylinder; when the cross beam moves downward, the piston cylinder is driven downward, and when the piston cylinder moves downward, the auxiliary wheel on the main shaft contacts the bottom surface, and at the same time, the push piece on the main shaft squeezes the spring to play a buffering role; in addition, when the front and rear ends of the RV are not in the same horizontal plane, the distances moved by the two push pieces in the two piston cylinders are different. At this time, the two push pieces will convert the gas inside the two piston cylinders through the conversion tube to further assist the buffering work of the spring.

[0005] Preferably, the fixing frame is provided with a connecting piece connected to the RV chassis, and the fixing frame is provided with reinforcing ribs.

[0006] Preferably, the fixed outer plate is fixedly installed on the outer side of the fixed frame, the fixed inner plate is fixedly installed on the inner side of the fixed frame, and the fixed outer plate and the fixed inner plate are designed as an integral unit.

[0007] Preferably, a limiting seat is fixed on one side of the fixed inner plate, and a base is fixedly installed on the hydraulic rod, and the base slides inside the limiting seat.

[0008] Preferably, one side of the fixed inner plate and the limiting seat is provided with a limiting groove, and the connecting rod slides inside the limiting groove.

[0009] Preferably, bolt holes for connecting with the RV chassis are provided on the surface of the bottom plate, slide grooves are provided on both sides of the bottom plate, cross bars are fixed on both sides of the bottom plate, the cross bars are fixedly connected to the cross beams, and the cross bars slide inside the slide grooves.

[0010] Preferably, limiting ribs are provided on both sides of the piston cylinder, and the limiting ribs are connected through the bottom plate.

[0011] Preferably, the conversion tube is designed as a hose, and is provided with a plastic part which is connected to the chassis of the RV, penetrates the conversion tube and limits the conversion tube from sagging due to gravity.

[0012] Preferably, the two push plates respectively divide the interior of the two piston cylinders into two upper and lower spaces, one end of the conversion tube is connected to the upper space of one of the piston cylinders, and the other end of the conversion tube is connected to the lower space of the other piston cylinder.

[0013] Preferably, when the push plate inside one of the piston cylinders slides upward, the gas in the upper space of one of the piston cylinders is transferred to the lower space of the other piston cylinder through the conversion tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention makes the bottom of the support frame contact with the trailer or the ground, thereby making the bases on the inner and outer sides of the fixing frame and the support frame contact with the trailer or the ground at the same time, and then the hydraulic rod continues to work, and the RV will start to move upward at this time, and the RV moves upward and the tires are out of contact with the trailer or the ground, so that the RV can be stably suspended in the air through the fixing frame and be out of contact with the trailer or the ground, and then the forklift can use the perforations on the fixing frame to drive the RV to move upward or suspend in the air, and then drive the trailer to move out from under the RV or drive the trailer to move under the RV; the RV can be kept in a stable suspended state in advance to avoid the RV being parked in potholes on the ground, and because of the unsaturated state of the RV tires after being squeezed, the RV is in a skewed state before being forked by the forklift, which makes it difficult to maintain a balanced and stable state when the forklift forks and rises, which makes it impossible to rise smoothly and easily causes damage to the RV.

[0016] The present invention keeps the RV in a suspended state in advance so that its tires are out of contact with the trailer or the ground. When the RV is lowered, the base and the support frame can be made to contact with the trailer or the ground before the tires, and then the tires of the RV are made to contact with the trailer or the ground gradually, thereby ensuring the landing stability of the RV and preventing the RV from tilting during landing due to the elastic properties of the RV tires or the unevenness of the ground, thereby causing damage to the RV and danger.

[0017] The auxiliary wheels of the present invention rotate on the trailer when the RV is started and unloaded along the tail plate of the trailer to assist the RV to move. When the rear of the RV contacts the bottom surface while the front of the RV is still on the cart, the front and rear of the RV are not in the same horizontal plane, which will cause the center of gravity of the RV to change, resulting in increased pressure on the tires at the rear of the RV; this will lead to different squeezing forces between the two auxiliary wheels and the trailer, which will cause different displacements of the two main shafts moving inside the two piston cylinders, so that the two push plates drive the gas inside the two piston cylinders to be converted through the conversion tube, so that the auxiliary spring plays a buffering role. When the tires at the front or parking space of the RV encounter bulges or potholes during movement, the gases in the two piston cylinders can be quickly converted and supplemented to each other, so as to better play a buffering role, so as to avoid danger when the front and rear of the RV are not in the same horizontal plane and shake due to potholes and bulges during movement, or when the RV shakes, the four tires are unevenly pressed, resulting in damage to individual tires, and even when the RV shakes with a large amplitude, the vehicle chassis structure is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the suspension mechanism of the present invention;

[0021] Figure 4 The second cross-sectional view of the suspension mechanism of the present invention;

[0022] Figure 5 It is a partial cross-sectional view of the suspension machine of the present invention;

[0023] Figure 6 It is a partial cross-sectional view of the connection portion between the suspension mechanism and the buffer mechanism of the present invention;

[0024] Figure 7 It is a partial cross-sectional view of the buffer mechanism of the present invention.

[0025] In the figure: 1. fixed frame; 2. suspension mechanism; 21. fixed outer plate; 22. support frame; 23. fixed inner plate; 24. hydraulic rod; 25. crossbeam; 26. limiting groove; 27. connecting rod; 28. limiting seat; 29. ​​base; 3. buffer mechanism; 31. bottom plate; 32. piston cylinder; 33. slide groove; 34. cross bar; 35. auxiliary wheel; 36. main shaft; 37. spring; 38. conversion tube; 39. push piece. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. 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.

[0027] First embodiment:

[0028] The invention comprises a fixing frame 1 installed on the chassis of the RV, the fixing frame 1 is provided with a suspension mechanism 2 for making the RV move up and down smoothly, the fixing frame 1 is provided with a buffer mechanism 3 for assisting the suspension mechanism 2 to provide a buffering effect when the front and rear ends of the RV are not in the same horizontal plane when the RV lands, the suspension mechanism 2 comprises a fixed outer plate 21 fixed to the side of the fixing frame 1, a fixed inner plate 23 connected to the fixed outer plate 21 is fixed to the inner side of the fixing frame 1, a hydraulic rod 24 is provided on the fixed inner plate 23, a cross beam 25 is provided at the output end of the hydraulic rod 24, the cross beam 25 is horizontally erected below the fixing frame 1, connecting rods 27 are provided at both ends of the cross beam 25, and a support frame 22 located on the outer side of the RV tire is provided at one end of the connecting rod 27; the output end of the hydraulic rod 24 drives When the cross beam 25 moves downward, the cross beam 25 drives the support frame 22 to move downward through the connecting rod 27 to make the RV suspended; and the fixed frame 1 is provided with a perforation for forklift operation; the fixed frame 1 is provided with a connecting piece connected to the RV chassis, and the fixed frame 1 is provided with a reinforcing rib, the fixed outer plate 21 is fixedly installed on the outer side of the fixed frame 1, the fixed inner plate 23 is fixedly installed on the inner side of the fixed frame 1, and the fixed outer plate 21 and the fixed inner plate 23 are designed as an integrated whole, a limiting seat 28 is fixed on one side of the fixed inner plate 23, and a base 29 is fixedly installed on the hydraulic rod 24, and the base 29 slides inside the limiting seat 28, and a limiting groove 26 is provided on one side of the fixed inner plate 23 and the limiting seat 28, and the connecting rod 27 slides inside the limiting groove 26;

[0029] See also Figures 1 to 5As shown, if a forklift is required to load or unload the RV vertically from the trailer, the hydraulic rod 24 can be started, so that the output end of the hydraulic rod 24 drives the cross beam 25 to move downward, and at the same time, the output end of the hydraulic rod 24 drives the base 29 to move downward inside the limiting seat 28, so that the base 29 contacts the trailer or the ground, and at the same time, the cross beam 25 drives the connecting rod 27 at one end to move inside the limiting groove 26, and the connecting rod 27 drives the support frame 22 to move downward, so that the bottom of the support frame 22 contacts the trailer or the ground, thereby making the base 29 and the support frame 22 on the inner and outer sides of the fixing frame 1 contact the trailer or the ground at the same time, and then the hydraulic rod 24 continues to work, and the RV will start to move upward. The RV moves upward and the tires are out of contact with the trailer or the ground, so that the RV can be stably suspended in the air through the fixing frame 1 and out of contact with the trailer or the ground, and then the forklift can use the perforations on the fixing frame 1 to drive the RV upward or suspended in the air, and then drive the trailer out from under the RV or drive the trailer to move under the RV; the RV can be kept in a stable suspended state in advance to prevent the RV from being parked in potholes on the ground, and because the RV tires are in an unsaturated state after being squeezed, the RV is in a skewed state before being forked by the forklift, which makes it difficult to maintain a balanced and stable state when the forklift is lifted up, which makes it unstable and easy to cause damage to the RV;

[0030] In addition, the RV is kept in a suspended state in advance so that its tires are out of contact with the trailer or the ground. When the RV is landing, the base 29 and the support frame 22 can be made to contact the trailer or the ground before the tires, and then the RV tires are gradually made to contact the trailer or the ground, thereby ensuring the landing stability of the RV and preventing the RV from tilting during landing due to the elasticity of the RV tires or the unevenness of the ground, thereby causing damage to the RV and danger;

[0031] In addition, the support frame 22 is located outside the tire, which can protect the tire and prevent it from contacting or expanding with external objects during high-speed rotation of the tire, thereby preventing the tire from being damaged or dangerous.

[0032] Second embodiment:

[0033] The buffer mechanism 3 includes a bottom plate 31 fixed under the chassis of the RV, a piston cylinder 32 that moves up and down with the cross beam 25 passes through the bottom plate 31, a spring 37 is arranged inside the piston cylinder 32, a main shaft 36 passes through the piston cylinder 32, an auxiliary wheel 35 is arranged at one end of the main shaft 36, a push piece 39 is fixed on the surface of the main shaft 36, one side of the push piece 39 is fixedly connected to the spring 37, and when the push piece 39 moves inside the piston cylinder 32, it pushes the gas inside the piston cylinder 32 to move, and the piston cylinder 32 is connected to another piston cylinder 32. The conversion tube 38 has one end located above the push piece 39, and the other end located below the push piece 39 in the other piston cylinder 32; the cross beam 25 moves downward while driving the piston cylinder 32 downward, and the piston cylinder 32 moves downward while making the auxiliary wheel 35 on the main shaft 36 contact with the bottom surface, and the push piece 39 on the main shaft 36 squeezes the spring 37 to play a buffering role; in addition, when the front and rear of the RV are not in the same horizontal plane, the two push pieces 39 move different distances in the two piston cylinders 32. When the two push pieces 39 convert the internal gas of the two piston cylinders 32 through the conversion tube 38, the spring 37 is further assisted in the buffering work; the surface of the bottom plate 31 is provided with bolt holes connected to the chassis of the RV, and the two sides of the bottom plate 31 are provided with slide grooves 33, and the two sides of the bottom plate 31 are fixed with cross bars 34, the cross bars 34 are fixedly connected to the cross beam 25, and the cross bars 34 slide inside the slide grooves 33, and the two sides of the piston cylinder 32 are provided with limiting ribs, which are connected to the bottom plate 31 through and through, and the conversion tube 38 is designed as a hose, and the conversion tube 38 is provided with There is a plastic part connected to the chassis of the RV and penetrating through the conversion tube 38 to limit the conversion tube 38 from sagging due to gravity. Two push pieces 39 divide the interior of the two piston cylinders 32 into two upper and lower spaces respectively. One end of the conversion tube 38 is connected to the upper space of one of the piston cylinders 32, and the other end of the conversion tube 38 is connected to the lower space of the other piston cylinder 32. When the push piece 39 inside one of the piston cylinders 32 slides upward, the gas in the upper space of one of the piston cylinders 32 is transferred to the lower space of the other piston cylinder 32 through the conversion tube 38.

[0034] See also Figure 1 and Figure 2 as well as Figure 6 As shown, if a forklift is not needed, when unloading the RV from the trailer tailboard, the hydraulic rod 24 can be started. The output end of the hydraulic rod 24 drives the cross beam 25 to move upward. At the same time, the cross beam 25 drives the piston cylinder 32 to move downward through the cross rod 34. The piston cylinder 32 drives the main shaft 36 to move downward, so that the auxiliary wheel 35 on the main shaft 36 contacts the trailer. Then the output end of the hydraulic rod 24 continues to work. See FIG. Figure 7As shown, the auxiliary wheel 35 squeezes the spring 37 through the push piece 39 on the main shaft 36. At the same time, when the piston cylinder 32 continues to move downward, the push piece 39 and the piston cylinder 32 move relative to each other. Before the support frame 22 and the base 29 are not in contact with the trailer, the hydraulic rod 24 can be stopped. In addition, when the push piece 39 is displaced inside the piston cylinder 32, the two push pieces 39 will respectively squeeze the gas inside the two piston cylinders 32 to move; when the RV is started and unloaded along the tailboard of the trailer, the auxiliary wheel 35 also rotates on the trailer to assist the RV to move. When the rear of the RV contacts the bottom surface, the front of the RV is still on the trolley, resulting in the front and rear of the RV being not in the same horizontal plane, which will cause the center of gravity of the RV to change, resulting in the pressure of the tire at the rear of the RV to increase; at this time, refer to Figure 1 as well as Figure 7 As shown, the squeezing force between the two auxiliary wheels 35 and the trailer is different, and the displacement of the two main shafts 36 in the two piston cylinders 32 is different, so that the two push pieces 39 drive the gas inside the two piston cylinders 32 to be converted through the conversion tube 38, so that the auxiliary spring 37 plays a buffering role. When the tires at the front or parking space of the RV encounter bumps or potholes during movement, the gas inside the two piston cylinders 32 can be quickly converted and supplemented to each other, so as to better play a buffering role, so as to avoid danger when the front and rear of the RV are not in the same horizontal plane and the RV shakes due to potholes and bumps during movement, or when the RV shakes, the four tires are unevenly pressed, resulting in damage to individual tires, and even when the RV shakes to a large extent, the chassis structure of the vehicle is damaged;

[0035] In addition, the dynamic buffering of the gas conversion compensation, combined with the elastic potential energy fixed by the spring 37, can better buffer the RV. At the same time, it can be used by simply fixing the fixing frame 1 on the chassis of the RV, which is convenient and strengthens the safety of the RV.

[0036] Working principle: when a forklift is needed to load or unload the RV vertically from the trailer, the hydraulic rod 24 is started, so that the output end of the hydraulic rod 24 drives the crossbeam 25 to move downward, and at the same time, the output end of the hydraulic rod 24 drives the base 29 to move downward inside the limiting seat 28, so that the base 29 contacts the trailer or the ground, and at the same time, the crossbeam 25 drives the connecting rod 27 at one end to move inside the limiting groove 26, and the connecting rod 27 drives the support frame 22 to move downward, so that the bottom of the support frame 22 contacts the trailer or the ground, thereby making the base 29 and the support frame 22 on both sides of the inner and outer sides of the fixed frame 1 contact the trailer or the ground at the same time, and then the hydraulic rod 24 continues to work, at this time The RV will start to move upward, the RV moves upward and the tires are out of contact with the trailer or the ground, thereby The RV can be stably suspended through the fixed frame 1 and is out of contact with the trailer or the ground, and then the forklift can use the perforations on the fixed frame 1 to drive the RV to move upward or suspend it, and then drive the trailer out from under the RV or drive the trailer to move to under the RV.

[0037] When the RV is not unloaded from the tailboard of the trailer without a forklift, the hydraulic rod 24 is started. The output end of the hydraulic rod 24 drives the cross beam 25 to move. At the same time, the cross beam 25 drives the piston cylinder 32 to move downward through the cross rod 34. The piston cylinder 32 drives the main shaft 36 to move downward, so that the auxiliary wheel 35 on the main shaft 36 contacts the trailer. Then the output end of the hydraulic rod 24 continues to work, so that the auxiliary wheel 35 squeezes the spring 37 through the push piece 39 on the main shaft 36. At the same time, when the piston cylinder 32 continues to move downward, the push piece 39 and the piston cylinder 32 move relative to each other. Before the support frame 22 and the base 29 do not contact the trailer, the hydraulic rod 24 can be stopped. In addition, while the push piece 39 is displaced inside the piston cylinder 32 When the RV is started and unloaded along the tail plate of the trailer, the auxiliary wheel 35 also rotates on the trailer to assist the RV to move. When the rear of the RV contacts the bottom surface and the front of the RV is still on the cart, the front and rear of the RV are not in the same horizontal plane, which will cause the center of gravity of the RV to change, resulting in greater pressure on the tire at the rear of the RV, which in turn causes the squeezing force of the two auxiliary wheels 35 and the trailer to be different, and thus the displacement of the two main shafts 36 in the two piston cylinders 32 to be different, and then the two push pieces 39 drive the gas inside the two piston cylinders 32 to be converted through the conversion tube 38, thereby assisting the spring 37 to play a buffering role.

[0038] 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. A portable loading and unloading mechanism for a motorhome, characterized in that: The invention comprises a fixing frame (1) mounted on a chassis of a motorhome, the fixing frame (1) being provided with a suspension mechanism (2) for enabling the motorhome to move up and down smoothly, the fixing frame (1) being provided with a buffer mechanism (3) for assisting the suspension mechanism (2) in providing a buffering effect when the front and rear ends of the motorhome are not on the same horizontal plane when the motorhome lands, the suspension mechanism (2) comprising a fixing outer plate (21) fixed to a side of the fixing frame (1), a fixing inner plate (23) connected to the fixing outer plate (21) being fixed to the inner side of the fixing frame (1), a hydraulic rod (24) being provided on the fixing inner plate (23), a crossbeam (25) being provided at the output end of the hydraulic rod (24), the crossbeam (25) being laterally erected below the fixing frame (1), connecting rods (27) being provided at both ends of the crossbeam (25), and a support frame (22) located outside a tire of the motorhome being provided at one end of the connecting rod (27); When the output end of the hydraulic rod (24) drives the crossbeam (25) to move downward, the crossbeam (25) drives the support frame (22) to move downward via the connecting rod (27) so that the RV is suspended in the air; and a through hole for forklift operation is provided on the fixed frame (1); The buffer mechanism (3) comprises a bottom plate (31) fixed below the chassis of the RV, a piston cylinder (32) passing through the bottom plate (31) and moving up and down with the cross beam (25), a spring (37) being arranged inside the piston cylinder (32), a main shaft (36) passing through the piston cylinder (32), an auxiliary wheel (35) being arranged at one end of the main shaft (36), a push piece (39) being fixed on the surface of the main shaft (36), one side of the push piece (39) being fixedly connected to the spring (37), and when the push piece (39) moves inside the piston cylinder (32), it pushes the gas inside the piston cylinder (32) to move, and the piston cylinder (32) is connected to a conversion tube (38) connected to another piston cylinder (32), one end of the conversion tube (38) being located above the push piece (39), and the other end of the conversion tube (38) being located below the push piece (39) inside the other piston cylinder (32); The cross beam (25) drives the piston cylinder (32) to move downward, and the piston cylinder (32) moves downward so that the auxiliary wheel (35) on the main shaft (36) contacts the bottom surface, and the push piece (39) on the main shaft (36) squeezes the spring (37) to play a buffering role. In addition, when the front and rear of the RV are not in the same horizontal plane, the two push pieces (39) move different distances inside the two piston cylinders (32). At this time, the two push pieces (39) convert the internal gas of the two piston cylinders (32) through the conversion tube (38) to further assist the buffering work of the spring (37). The two push pieces (39) respectively divide the interior of the two piston cylinders (32) into two upper and lower spaces; one end of the conversion tube (38) is communicated with the upper space of one of the piston cylinders (32); and the other end of the conversion tube (38) is communicated with the lower space of the other piston cylinder (32); When the push piece (39) inside one of the piston cylinders (32) slides upward, the gas in the upper space of one of the piston cylinders (32) is transferred to the lower space of the other piston cylinder (32) through the conversion tube (38).

2. A portable loading and unloading mechanism for a motorhome according to claim 1, characterized in that: The fixing frame (1) is provided with a connecting piece connected to the chassis of the RV, and the fixing frame (1) is provided with a reinforcing rib.

3. The portable loading and unloading mechanism for a motorhome according to claim 1, characterized in that: The fixed outer plate (21) is fixedly mounted on the outer side of the fixed frame (1), the fixed inner plate (23) is fixedly mounted on the inner side of the fixed frame (1), and the fixed outer plate (21) and the fixed inner plate (23) are designed as an integral unit.

4. The portable loading and unloading mechanism for a motorhome according to claim 1, characterized in that: A limiting seat (28) is fixed on one side of the fixed inner plate (23), and a base (29) is fixedly installed on the hydraulic rod (24), and the base (29) slides inside the limiting seat (28).

5. A portable loading and unloading mechanism for a motorhome according to claim 4, characterized in that: A limiting groove (26) is provided on one side of the fixed inner plate (23) and the limiting seat (28), and the connecting rod (27) slides inside the limiting groove (26).

6. The portable loading and unloading mechanism for a motorhome according to claim 1, characterized in that: Bolt holes for connecting with the chassis of the RV are provided on the surface of the bottom plate (31), slide grooves (33) are provided on both sides of the bottom plate (31), cross bars (34) are fixed on both sides of the bottom plate (31), the cross bars (34) are fixedly connected to the cross beam (25), and the cross bars (34) slide inside the slide grooves (33).

7. The portable loading and unloading mechanism for a motorhome according to claim 1, characterized in that: Limiting ribs are provided on both sides of the piston cylinder (32), and the limiting ribs are connected through the bottom plate (31).

8. The portable loading and unloading mechanism for a motorhome according to claim 1, characterized in that: The conversion tube (38) is designed as a hose, and a plastic part is provided on the conversion tube (38) which is connected to the chassis of the RV, penetrates the conversion tube (38) and limits the conversion tube (38) from sagging due to gravity.

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