Motor home tail lifting device

Abstract

The invention relates to the technical field of motor home baggage holders, in particular to a motor home tail lifting device which comprises a fixing part connected with the tail of a motor home, a lifting part sliding on the fixing part and a driving mechanism, and a loading area is formed on one side of the lifting part; the driving mechanism comprises a first lifting rope, a second lifting rope and a power assembly, one end of the first lifting rope is connected with the lifting part, and the other end of the first lifting rope is connected with the power assembly; one end of the second lifting rope is connected with the lifting part, and the other end of the second lifting rope is connected with the power assembly; the first lifting rope is connected with one end of the lifting part and applies acting force parallel to the sliding direction of the lifting part to the lifting part; the second lifting rope is connected with one end of the lifting part and applies acting force parallel to the sliding direction of the lifting part to the lifting part; the power assembly is arranged on the lifting part and used for driving the first lifting rope and the second lifting rope to move synchronously. The lifting device has the effects that in the lifting process, stress of the lifting part is more reasonable, and safety is better.

Description

Technical Field

[0001] The present application relates to the technical field of RV luggage racks, and in particular to a RV rear lifting device. Background Art

[0002] At present, off-road RV is a special vehicle that combines a car and a house. It not only provides the convenience of travel, but also allows people to live in the car. Generally, people need to carry a lot of luggage, so the internal space of the RV is insufficient. Therefore, there is generally a lifting device at the rear of the off-road RV to store luggage, motorcycles and other items.

[0003] In the prior art, a Chinese patent with publication number CN211196004U discloses a rear bracket for a motorhome, including a body bracket, an electric winch box fixed to the upper part of one side wall of the body bracket, an electric winch installed in the middle of the electric winch box, a pull rope wound around the electric winch, the bottom end of the pull rope is connected to a tailgate bracket through a hook, and the tailgate bracket is slidably connected to the body bracket; however, the setting of a single pull rope and a hook makes the force on the tailgate bracket unreasonable, resulting in reduced safety. Summary of the invention

[0004] In order to improve safety, the present application provides a lifting device for the rear of a motorhome.

[0005] The present application provides a RV rear lifting device, which adopts the following technical solution: A RV rear lifting device comprises a fixing part connected to the rear of the RV, a lifting part sliding on the fixing part and a driving mechanism, wherein a loading area is formed on one side of the lifting part; The driving mechanism comprises a first suspension rope, a second suspension rope and a power assembly, wherein one end of the first suspension rope is connected to the lifting part, and the other end of the first suspension rope is connected to the power assembly; One end of the second suspension rope is connected to the lifting part, and the other end of the second suspension rope is connected to the power assembly; One end of the first suspension rope connected to the lifting part applies a force to the lifting part parallel to the sliding direction of the lifting part; One end of the second suspension rope connected to the lifting part applies a force to the lifting part parallel to the sliding direction of the lifting part; The power assembly is disposed on the lifting portion, and is used to drive the first suspension rope and the second suspension rope to move synchronously.

[0006] By adopting the above technical solution, the lifting part is in the lowest position and connected to the fixed part, the loading area is idle or loaded with items, the first lifting rope and the second lifting rope are both in a relaxed state, and the power assembly is in a standby state.

[0007] When lifting is required, the power assembly starts working. As the power assembly operates, the first lifting rope and the second lifting rope start to move synchronously. Since the two lifting ropes exert force on the lifting part, the lifting part can remain stable during the rising process without deflection or shaking.

[0008] When the lifting part rises to the required height, the power assembly stops working, the lifting rope remains taut, and the lifting part stabilizes at this height; when the lifting part needs to be lowered, the power assembly runs in the opposite direction, the first lifting rope and the second lifting rope begin to relax synchronously, and the lifting part slowly descends under the action of gravity until it returns to the initial position.

[0009] Since the directions of the forces exerted by the first and second lifting ropes on the lifting part are symmetrically arranged along the sliding center plane, the double-point force can ensure that the lifting part remains stable during the lifting process without deflection or shaking; in addition, the double-point force can also disperse the force, reduce the burden of a single lifting rope and power component, and improve the durability and safety of the entire device; on the other hand, the balanced force can reduce the friction between the lifting part and the fixed part, extend the service life of each component, and reduce abnormal noise.

[0010] Optionally, the power assembly includes a first pulley and a power source, the first pulley is arranged on the fixing portion, and two first pulleys are arranged symmetrically along the sliding center plane of the lifting portion; One end of the first suspension rope away from the lifting part passes around one of the first pulleys and is connected to the power source; One end of the second suspension rope away from the lifting part passes around another first pulley and is connected to the power source; The power source is disposed on the lifting part, and is used to drive the first suspension rope and the second suspension rope to move synchronously.

[0011] By adopting the above technical solution, as the power source operates, the first suspension rope and the second suspension rope start to move synchronously, so that the lifting part moves in the vertical direction; the setting of the two first pulleys plays a key role, which not only changes the direction of the suspension rope so that the suspension rope can be smoothly connected to the power source, but also ensures the stability of the suspension rope during movement; due to the design of the pulley, the suspension rope can move smoothly along the contour of the pulley during movement, reducing friction and wear and improving efficiency.

[0012] The first pulley plays a guiding role in the movement of the lifting rope, ensuring the smooth movement of the lifting rope, thereby enhancing the stability of the lifting part; the smooth surface of the first pulley reduces the friction between the lifting rope and the pulley, extending the service life of the lifting rope; at the same time, the power source is arranged on the lifting part, which is convenient for maintenance, and is arranged on the lifting part, making the whole device more compact and saving space.

[0013] Optionally, the power assembly further includes a second pulley, which is arranged on the fixed part, and two second pulleys are provided, and the two second pulleys are symmetrically arranged along the sliding center plane of the lifting part; the first lifting rope passes around one of the second pulleys to connect to the lifting part, and the second lifting rope passes around the other second pulley to connect to the lifting part.

[0014] By adopting the above technical solution, as the power source operates, the first suspension rope and the second suspension rope begin to move synchronously. In this process, the two first pulleys change the direction of the suspension ropes and connect them to the power source, while the two second pulleys further guide the suspension ropes to ensure that they can be stably and smoothly connected to the lifting part and move with the lifting and lowering of the lifting part.

[0015] The first pulley and the second pulley play a complementary role in the lifting device. The first pulley is mainly responsible for changing the direction of the lifting rope and connecting to the power source, while the second pulley further guides the lifting rope to be smoothly connected to the lifting part; the cooperation between the two makes the movement path of the lifting rope smoother and more stable, thereby improving the performance and reliability of the entire lifting device.

[0016] Optionally, the combined force applied by the first suspension rope and the second suspension rope to the power source is located in the sliding center plane.

[0017] By adopting the above technical solution, the direction of the combined force applied by the first suspension rope and the second suspension rope to the power source is located in the sliding center plane, so that the reaction force applied by the power source to the first suspension rope and the second suspension rope is balanced, thereby reducing damage to the suspension ropes and reducing the pulling on the power source, thereby increasing the service life of the equipment and making the force transmitted to the lifting part more balanced and stable, thereby improving the overall safety of the equipment.

[0018] Optionally, the power assembly further comprises a third suspension rope, an end of the first suspension rope away from the lifting part and an end of the second suspension rope away from the lifting part are connected via the third suspension rope, and the first suspension rope and the second suspension rope are connected to the power source via the third suspension rope.

[0019] By adopting the above technical solution, by connecting the first lifting rope and the second lifting rope through the third lifting rope and connecting them to the power source, the power transmission structure of the entire lifting device is simplified, and there is no need to additionally set the winding synchronization of the power source. This design reduces the number of transmission links and components, and reduces manufacturing costs and maintenance difficulties.

[0020] Since the first suspension rope and the second suspension rope are connected through the third suspension rope and synchronously respond to the command of the power source, they can always keep synchronous movement, which helps to ensure the stability and stability of the lifting part during the lifting process.

[0021] The design of connecting the first hanging rope and the second hanging rope through the third hanging rope and connecting them to the power source allows a more flexible space layout. This design can be adjusted and optimized according to the actual situation of the rear of the RV to adapt to different usage requirements and space limitations.

[0022] Optionally, the third suspension rope is provided with a suspension rope connector, the first suspension rope is connected to the third suspension rope via the suspension rope connector, and the second suspension rope is connected to the third suspension rope via the suspension rope connector.

[0023] By adopting the above technical solution and setting the sling connecting piece, the connection stability is improved, the equipment safety is improved, and the damage to the equipment can be reduced.

[0024] Optionally, an anti-falling mechanism is provided on the fixed part, and the anti-falling mechanism includes a safety sling box and a safety sling, the safety sling box is provided on the fixed part, one end of the safety sling is fixed in the safety sling box, and the other end of the safety sling is connected to the lifting part.

[0025] By adopting the above technical solution, when the lifting part rises or falls under the action of the power source, the safety harness limits the sudden fall of the lifting part, thereby reducing the sudden fall of the lifting part caused by power failure and improving safety.

[0026] Optionally, a first latch hole is provided on the lifting part, and a second latch hole is provided on the fixing part; The fixing portion is provided with a locking mechanism, and the locking mechanism comprises a locking pin, and the locking pin can be inserted into the first pin hole and the second pin hole in sequence.

[0027] By adopting the above technical solution, after the lifting part moves to the set position, the locking pin is passed through the first pin hole and the second pin hole in sequence, so that the lifting part and the fixing part maintain a fixed position, the power source electricity can be cut off, and the continuous power loss can be reduced; when used in conjunction with the safety harness, the two can cooperate with each other, which can reduce the sudden fall of the lifting part and complete the static locking of the lifting part, and can be used for a long time. After the locking pin is cut off, the safety harness can play a limiting role, achieving a double protection effect.

[0028] Optionally, the locking mechanism further comprises a locking assembly, one end of which is arranged on the lifting part, and the other end of which is arranged on the fixing part, for limiting the separation of the lifting part and the fixing part.

[0029] By adopting the above technical solution, after the lifting part moves to the set position, the locking component is connected to the lifting part and the fixed part so that the first latch hole and the second latch hole are aligned, and then the locking pin is inserted. The setting of the locking component facilitates the insertion of the locking pin, and at the same time can reduce the shear force of the lifting part and the fixed part on the locking pin during the movement of the vehicle, and at the same time can reduce the tension on the first hanging rope and the second hanging rope, thereby extending the service life of the first hanging rope and the second hanging rope; the anti-fall mechanism and the locking mechanism cooperate with each other to form a triple lock, which reduces the relative displacement of the lifting part and the fixed part in the locked state, and at the same time reduces the sudden fall of the lifting part during the movement, thereby improving the safety of the device.

[0030] Optionally, a connection point between the first suspension rope and the lifting part and a connection point between the second suspension rope and the lifting part are symmetrically arranged along a sliding center plane.

[0031] By adopting the above technical solution, the connection points of the first and second suspension ropes and the lifting part are symmetrically arranged along the sliding center plane, so that the force exerted by the suspension ropes on the lifting part has no angle and the force positions are symmetrical, thereby making the force on the lifting part more balanced.

[0032] Optionally, a ball group is provided at the sliding connection between the lifting part and the fixed part.

[0033] By adopting the above technical solution and setting the ball group, the sliding between the lifting part and the fixed part becomes smoother, and the static friction is converted into dynamic friction, which can reduce the wear between the components. In combination with the use of the driving mechanism, the sliding of the lifting part becomes more balanced and stable, thereby improving the safety and service life of the equipment.

[0034] In summary, the present application includes at least one of the following beneficial technical effects: 1. Since the directions of the forces exerted by the first and second lifting ropes on the lifting part are symmetrically arranged along the sliding center plane, the double-point force can ensure that the lifting part remains stable during the lifting process without deflection or shaking; in addition, the double-point force can also disperse the force, reduce the burden of a single lifting rope and power component, and improve the durability and safety of the entire device; on the other hand, the balanced force can reduce the friction between the lifting part and the fixed part, extend the service life of each component, and reduce abnormal noise; 2. The first lifting rope and the second lifting rope are connected by the third lifting rope and respond synchronously to the command of the power source, so they can always keep synchronous movement, which helps to ensure the stability and stability of the lifting part during the lifting process; 3. The anti-fall mechanism and the locking mechanism cooperate with each other to form a triple lock, which reduces the relative displacement of the lifting part and the fixed part in the locked state, and at the same time reduces the sudden fall of the lifting part during movement, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is an overall structural diagram of the lifting device when the lifting part is locked in the embodiment of the present application; Figure 2 is an overall structural diagram of the lifting device when the lifting part is lowered in the embodiment of the present application; Figure 3 It is a detailed structural display diagram of the fixing part in the embodiment of the present application; Figure 4 This is a detailed structural diagram of the lifting part in the embodiment of the present application; Figure 5 It is a detailed display diagram of the partial structure of the driving mechanism in the embodiment of the present application; Figure 6 yes Figure 3 A partial enlarged view of the middle area B; Figure 7 yes Figure 3 A partial enlarged view of the middle area C; Figure 8 is a detailed structural diagram of the suspension rope connector in the embodiment of the present application; Fig. 9 yes Figure 1 A partial enlarged view of the middle area A; Fig.10 yes Figure 4 A partial enlarged view of the middle area F; Fig.11 yes Figure 3 A partial enlarged view of the middle area D; Fig.12 yes Figure 3 A partial enlarged view of the middle area E; Fig.13 yes Figure 4 A partial enlarged view of the middle area G.

[0036] Reference numerals: 100, fixing part; 110, first main body; 111, first longitudinal tube; 112, first transverse tube; 113, second latch hole; 120, mounting plate; 130, first ball group; 200, lifting part; 210, second main body; 211, second vertical tube; 212, second transverse tube; 213, second longitudinal tube; 214, third transverse tube; 215, slide groove; 216, reinforcement tube; 217, first latch hole; 220, second ball group; 230, spare tire rack; 240, motorcycle mounting plate; 250, support block; 260, reinforcement member; 300, driving mechanism; 310, first suspension rope; 320, second lifting rope; 331, first pulley; 332, power source; 333, second pulley; 340, third lifting rope; 350, lifting rope connector; 351, triangular plate; 352, first step pin; 353, second step pin; 354, third step pin; 360, lifting rope seat; 370, connecting plate; 371, first connecting plate; 372, second connecting plate; 400, anti-fall mechanism; 410, safety harness; 420, safety harness box; 430, safety harness connector; 500, locking mechanism; 510, locking pin; 520, buckle assembly; 521, buckle; 522, buckle seat. DETAILED DESCRIPTION

[0037] The following combination Figures 1 to 13 This application is described in further detail.

[0038] This embodiment discloses a lifting device for the rear part of a motorhome.

[0039] Reference Figure 1 and Figure 2 The RV rear lifting device includes: a fixing part 100 detachably connected to the rear of the RV by bolts, a lifting part 200 sliding on the fixing part 100 in a vertical direction, and a driving mechanism 300 arranged on the fixing part 100. The driving mechanism 300 is connected to the lifting part 200 at two points to drive the lifting part 200 to rise smoothly. A loading area is formed on the lifting part 200 for loading luggage, vehicles and other components.

[0040] Reference Figure 2 and Figure 3 The fixing part 100 includes a first main body part 110 and a mounting plate 120. The first main body part 110 is a U-shaped frame, which is spliced ​​by two parallel and symmetrically arranged first longitudinal tubes 111 and a first transverse tube 112. Two groups of mounting plates 120 are arranged and are symmetrically arranged on the outside of the two first longitudinal tubes 111 of the first main body part 110. The fixing part 100 is connected to the rear of the RV through the mounting plate 120.

[0041] Reference Figure 2 and Figure 4The lifting part 200 includes a second main body 210. The second main body 210 is an L-shaped frame. The upper part is composed of two parallel and symmetrical second vertical tubes 211 and a second horizontal tube 212, and the lower part is composed of two parallel and symmetrical second longitudinal tubes 213 and two third horizontal tubes 214. The second main body 210 has a plurality of reinforcing tubes 216 inside to reinforce the overall structure. The outer sides of the two second vertical tubes 211 facing away from each other are formed with a slide groove 215 for the first longitudinal tube 111 to slide. The first longitudinal tube 111 of the first main body 110 is located in the slide groove 215 and can slide up and down along the slide groove 215; the symmetry reference plane of the two second vertical tubes 211 is the sliding center plane, which passes through the middle of the length direction of the second horizontal tube 212 and is perpendicular to the second horizontal tube 212.

[0042] In other embodiments, the slide groove 215 may be replaced by a slide rail.

[0043] The fixing part 100 and the lifting part 200 can adopt titanium alloy technology to reduce weight and reduce vehicle load, and a bolted design is adopted between the two to facilitate disassembly and assembly and eliminate welding stress, thereby extending service life.

[0044] Reference Figure 4 and Figure 5 The driving mechanism 300 includes a first suspension rope 310, a second suspension rope 320, a suspension rope seat 360 and a power assembly. The suspension rope seat 360 is arranged on the inner side of the second vertical pipe 211 close to the second horizontal pipe 212. The suspension rope seat 360 is fixed to the second vertical pipe 211 by bolts, and the two suspension rope seats 360 are symmetrically arranged along the sliding center plane; one end of the first suspension rope 310 passes through one of the suspension rope seats 360 and is connected to the suspension rope seat 360 through a rope clamp, and one end of the second suspension rope 320 passes through the other suspension rope seat 360 and is connected to the suspension rope seat 360 through a rope clamp; the power assembly is arranged on the lifting part 200, and connects the first suspension rope 310 and the second suspension rope 320 at one end away from the suspension rope seat 360, and controls the lifting and lowering of the lifting part 200 by driving the first suspension rope 310 and the second suspension rope 320 to move synchronously.

[0045] Reference Figure 2 , Figure 3 and Figure 6Preferably, the driving mechanism 300 also includes a connecting plate 370, and the connecting plate 370 includes a first connecting plate 371. The first connecting plates 371 are divided into two groups, each group is symmetrically arranged at two upper diagonal positions of the first main body 110, that is, at both ends of the first transverse tube 112, and the two groups of first connecting plates 371 are symmetrically arranged along the sliding center plane; each group includes two first connecting plates 371, and the two first connecting plates 371 of each group are located on both sides of the width direction of the first transverse tube 112, and are fixedly connected to the first transverse tube 112 by bolts; the power assembly includes two first pulleys 331, and the two first pulleys 331 correspond to the two groups of first connecting plates 371 one by one, and the first pulley 331 rotates between the two connecting plates 370 of the same group; the first One end of the rope 310 away from the rope seat 360 passes through the gap between one of the first pulleys 331 and the first transverse tube 112 and is connected to a power source 332. The power source 332 is arranged on the side of the third transverse tube 214 close to the second transverse tube 212 and is located in the middle of the third transverse tube 214; one end of the second rope 320 away from the rope seat 360 passes through the gap between the other first pulley 331 and the first transverse tube 112 and is connected to the power source 332. The power source 332 synchronously reels or releases the first rope 310 and the second rope 320, so that the lifting part 200 rises or falls; the power source 332 can be a rope winding machine, a rope collecting machine, a rope collecting device, a winch, or a capstan. The present embodiment is preferably a capstan, and the selected type is an electric capstan.

[0046] Reference Figure 2 , Figure 3 and Figure 7 Preferably, the connecting plate 370 also includes a second connecting plate 372, two of which are symmetrically arranged on the front and rear sides of the middle of the first transverse tube 112 of the fixing portion 100; two second pulleys 333 are symmetrically arranged between the two ends of the two second connecting plates 372; the end of the first suspension rope 310 away from the suspension rope seat 360 passes around one of the first pulleys 331 and one of the second pulleys 333 in turn, and then is connected to the power source 332; the end of the second suspension rope 320 away from the suspension rope seat 360 passes around the other first pulley 331 and the other second pulley 333 in turn, and then is connected to the power source 332.

[0047] Reference Figure 5 and Figure 8Preferably, in order to reduce the component structure of the power source 332 and reduce the space occupied, a rope connector 350 is provided at one end of the first rope 310 away from the rope seat 360 and one end of the second rope 320 away from the rope seat 360. The rope connector 350 is assembled from two triangular plates 351 through a first step pin 352, a second step pin 353 and a third step pin 354, and the assembly method is bolt fixing; the end of the first rope 310 away from the rope seat 360 passes through the first pulley 331 and the second pulley 333 in sequence, and is rotatably connected to the first step pin 352; the end of the second rope 320 away from the rope seat 360 passes through another first pulley 331 and the second pulley 333 in sequence, and is rotatably connected to the second step pin 353; a third rope 340 is rotatably connected to the third step pin 354, and the end of the third rope 340 away from the third step pin 354 is connected to the power source 332.

[0048] Thus, the entire driving mechanism 300 can drive the lifting part 200 to rise or fall by shortening or lengthening the third suspension rope 340, and through the symmetrically arranged first suspension rope 310 and second suspension rope 320, the weight of the lifting part 200 can be evenly distributed, reducing the load of the power source 332 and improving safety.

[0049] Reference Figure 1 , Fig. 9 , Fig.10 and Fig.11 Preferably, in order to enhance the locking of the lifting part 200 in a stationary state, the bottom front ends of the two first longitudinal tubes 111 are provided with second latch holes 113, and the bottom two front ends of the second vertical tube 211 are provided with first latch holes 217; a locking mechanism 500 is provided on the fixed part 100, and the locking mechanism 500 includes a locking pin 510, which can be inserted into the first latch hole 217 on the fixed part 100 and the second latch hole 113 on the lifting part 200 to lock the fixed part 100 and the lifting part 200.

[0050] Reference Figure 1 , Fig. 9 , Fig.10 and Fig.11Preferably, in order to further enhance the locking effect of the lifting part 200 in the static state, the locking mechanism 500 also includes a lock component 520. The lock component 520 can be a lock structure, a buckle structure or a box buckle structure. The present embodiment is preferably a lock structure. The lock structure includes a lock 521 and a lock seat 522. The lock 521 is arranged at the outer bottom of the first longitudinal tube 111 of the fixing part 100, and the lock seat 522 is arranged at the lower outer side of the first longitudinal tube 111 on the fixing part 100. The lock 521 can be fastened to the lock seat 522 to lock the fixing part 100 and the lifting part 200. The double locking can better protect To ensure the safety of the structure in the locked state; and when installing the locking pin 510, the lock buckle 521 and the lock buckle seat 522 can be connected first to complete the alignment of the first lock hole 217 and the second lock hole 113, which is convenient for the installation of the locking pin 510; or, the locking pin 510 can be installed first to facilitate the hooking of the lock buckle 521 and the lock buckle seat 522, thereby reducing the pressing force of the lock buckle 521 when locking; at the same time, the cooperation between the lock buckle assembly 520 and the locking pin 510 reduces the tension of the first hanging rope 310 and the second hanging rope 320, thereby reducing damage to the first hanging rope 310 and the second hanging rope 320.

[0051] Reference Figure 2 Furthermore, the device further includes two sets of anti-falling mechanisms 400, each set of anti-falling mechanisms 400 includes a safety harness box 420, a safety harness 410 and a safety harness connector 430. The two safety harness boxes 420 are symmetrically arranged at the two ends of the first transverse tube 112, and are located between the first connecting plate 371 and the second connecting plate 372 in the middle, and are offset from the first connecting plate 371. The safety harness connector 430 is symmetrically arranged at the bottom of the second transverse tube 212 of the lifting part 200. The upper end of the safety harness 410 is fixedly connected to the safety harness box 420, and the safety harness 410 can be stored in the safety harness box 420, and the other end of the safety harness 410 extends out of the safety harness box 420 and is connected to the safety harness connector 430. The principle of the safety harness 410 is similar to that of a car safety belt or an elevator fall arrester, and it has an internal self-locking structure. On the one hand, it further increases the safety in the locked state, and on the other hand, it eliminates the safety hazards caused by sudden falling accidents (such as motor failure, rope breakage, etc.) during the lifting process of the lifting part 200, thereby ensuring the safety during the lifting process.

[0052] Reference Fig.11 , Fig.12 and Fig.13In other embodiments, preferably, the fixed part 100 further includes a first ball group 130, and the lifting part 200 further includes a second ball group 220. The first ball group 130 is arranged on the front, inner side and back bottom of the first longitudinal tube 111 of the fixed part 100, and the first ball group 130 is slidably connected to the slide rail outside the second vertical tube 211 of the lifting part 200; the second ball group 220 is arranged on the inner upper part of the slide rail outside the second vertical tube 211 of the lifting part 200, and is slidably connected to the first longitudinal tube 111 of the fixed part 100. Through the ball group, the lifting part 200 can perform lifting and lowering movements more smoothly.

[0053] In other embodiments, as a preference, the lifting part 200 further includes a spare tire rack 230, a motorcycle mounting plate 240, a support block 250 and a reinforcement member 260. The spare tire rack 230 is arranged on two cross-arranged reinforcement pipes 216 on the left side of the middle of the lifting part 200, and the motorcycle mounting plate 240 is arranged on the third cross pipe 214 on the outside, so that the cargo carrying function is more abundant; the support block 250 is arranged at the bottom of the lifting part 200 to play a supporting and shock absorbing role. The reinforcement member 260 is arranged at the connection between the pipes to reinforce the device.

[0054] When the device is in the locked position, that is, when the relative positions of the fixed part 100 and the lifting part 200 are in the same horizontal plane, the lock buckle 521 is fastened to the lock buckle seat 522, and the locking pin 510 is inserted into the first pin hole 217 and the second pin hole 113 to lock the relative position between the two. At this time, the safety belt 410 is at the initial length, which can prevent the safety hazard caused by the sudden drop of the lifting part 200 when the above two locking mechanisms 500 are all invalid; when descending, the lock of the above mechanism is released, so that the electric winch drives the third rope 340 to extend. At this time, the first lifting rope 310 and the second lifting rope 320 drive the lifting part 200 to move downward until they touch the ground, and the safety belt 410 extends as the lifting part 200 descends; when rising, the power source 332 drives the third lifting rope 340 to shorten. At this time, the first lifting rope 310 and the second lifting rope 320 drive the lifting part 200 to move upward until the locking position, and the safety belt 410 shortens as the lifting part 200 rises. Finally, the locking mechanism 500 is used to lock the fixing part 100 and the lifting part 200 to complete the locking of the device.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A motorhome rear lifting device, characterized in that: It comprises a fixing part (100) connected to the rear of a motorhome, a lifting part (200) sliding on the fixing part (100), and a driving mechanism (300), wherein a loading area is formed on one side of the lifting part (200); The driving mechanism (300) comprises a first suspension rope (310), a second suspension rope (320) and a power assembly, wherein one end of the first suspension rope (310) is connected to the lifting part (200), and the other end of the first suspension rope (310) is connected to the power assembly; One end of the second suspension rope (320) is connected to the lifting part (200), and the other end of the second suspension rope (320) is connected to the power assembly; One end of the first suspension rope (310) connected to the lifting part (200) applies a force on the lifting part (200) parallel to the sliding direction of the lifting part (200); One end of the second suspension rope (320) connected to the lifting part (200) applies a force on the lifting part (200) parallel to the sliding direction of the lifting part (200); The power assembly is arranged on the lifting part (200) and is used to drive the first suspension rope (310) and the second suspension rope (320) to move synchronously.

2. The RV rear lifting device according to claim 1, characterized in that: The power assembly comprises a first pulley (331) and a power source (332), the first pulley (331) being arranged on the fixing portion (100), and two first pulleys (331) being arranged, and the two first pulleys (331) being symmetrically arranged along a sliding center plane of the lifting portion (200); One end of the first suspension rope (310) away from the lifting part (200) passes around one of the first pulleys (331) and is connected to the power source (332); One end of the second suspension rope (320) away from the lifting part (200) passes around another first pulley (331) and is connected to the power source (332); The power source (332) is arranged on the lifting part (200) and is used to drive the first suspension rope (310) and the second suspension rope (320) to move synchronously.

3. The rear lifting device of a motorhome according to claim 2, characterized in that: The power assembly further comprises a second pulley (333), which is arranged on the fixed portion (100) and is provided with two second pulleys (333), and the two second pulleys (333) are symmetrically arranged along the sliding center plane of the lifting portion (200); the first suspension rope (310) passes around one of the second pulleys (333) to connect to the lifting portion (200), and the second suspension rope (320) passes around the other second pulley (333) to connect to the lifting portion (200).

4. The RV rear lifting device according to claim 3, characterized in that: The combined force exerted by the first suspension rope (310) and the second suspension rope (320) on the power source (332) is located in the sliding center plane.

5. The rear lifting device of a motorhome according to claim 4, characterized in that: The power assembly further comprises a third suspension rope (340), wherein one end of the first suspension rope (310) away from the lifting part (200) and one end of the second suspension rope (320) away from the lifting part (200) are connected via the third suspension rope (340), and the first suspension rope (310) and the second suspension rope (320) are connected to the power source (332) via the third suspension rope (340).

6. The RV rear lifting device according to claim 5, characterized in that: The third suspension rope (340) is provided with a suspension rope connector (350), the first suspension rope (310) is connected to the third suspension rope (340) via the suspension rope connector (350), and the second suspension rope (320) is connected to the third suspension rope (340) via the suspension rope connector (350).

7. The RV rear lifting device according to any one of claims 1 to 6, characterized in that: The fixing portion (100) is provided with an anti-falling mechanism (400), the anti-falling mechanism (400) comprising a safety sling box (420) and a safety sling (410), the safety sling box (420) being provided on the fixing portion (100), one end of the safety sling (410) being fixed in the safety sling box (420), and the other end of the safety sling (410) being connected to the lifting portion (200).

8. The rear lifting device of a motorhome according to claim 7, characterized in that: The lifting portion (200) is provided with a first latch hole (217), and the fixing portion (100) is provided with a second latch hole (113) corresponding to the first latch hole (217); The fixing portion (100) is provided with a locking mechanism (500), the locking mechanism (500) comprising a locking pin (510), the locking pin (510) being capable of being inserted into the first pin hole (217) and the second pin hole (113) in sequence.

9. The RV rear lifting device according to claim 8, characterized in that: The locking mechanism (500) further comprises a locking assembly (520), one end of the locking assembly (520) being arranged on the lifting part (200) and the other end being arranged on the fixing part (100), and being used for limiting the separation of the lifting part (200) and the fixing part (100).

10. The RV rear lifting device according to any one of claims 1 to 6, characterized in that: The connection point between the first suspension rope (310) and the lifting part (200) and the connection point between the second suspension rope (320) and the lifting part (200) are symmetrically arranged along the sliding center plane.

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