A motor home chassis cross beam damping device

Abstract

The application discloses a motor home chassis crossbeam damping device and relates to the technical field of motor homes. The motor home chassis crossbeam damping device comprises a crossbeam one, a crossbeam two, a swing arm and a circular table, the circular table is fixedly connected with the swing arm, the swing arm is hingedly connected with the crossbeam two, and the motor home chassis crossbeam damping device further comprises a damping mechanism, the damping mechanism comprises a piston rod and a hydraulic cylinder, the piston rod extends into the hydraulic cylinder and is slidably connected with the hydraulic cylinder, a second winding disc pulls a first winding disc to rotate, the first winding disc is connected with a first winding rod through a one-way damping bearing, the first winding rod is made to rotate through damping action, the first winding rod drives a first traction rope to be wound, at this time, the first traction rope pulls a second arc-shaped scraper to rise, the second arc-shaped scraper is attached to the piston rod and rises to strip dust on the outer side of the piston rod upwards, so that the piston rod is cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor homes, in particular to a motor home chassis beam damping device. BACKGROUND

[0002] The suspension system of the motor home makes an important contribution to improving stability during the driving of the motor home. The suspension system of the motor home acts on the tire, so that the suspension system absorbs and reduces the up and down movement from the tire, thereby reducing the transmission of the tire to the body,

[0003] Referring to the patent application with the publication number CN216424559U, a motor home chassis beam damping device is disclosed, which comprises a special-shaped chassis beam, the special-shaped chassis beam comprises a beam one and a beam two, the beam one and the beam two are spaced apart, one end of the telescopic device away from the working end is hinged to the beam one, the working end of the telescopic device is hinged to the top surface of the cylindrical circular table, the side surface of the cylindrical circular table is fixedly connected to one end of the connecting rod, the other end of the connecting rod is fixedly connected to one end of the swing arm, the other end of the swing arm is hinged to the beam two. The utility model provides a motor home chassis beam damping device which is simple in structure, low in installation requirement and easy to realize integration.

[0004] In the above-mentioned scheme, the telescopic device is used for damping treatment. In the existing damping device, the hydraulic damping and the air pressure damping are exposed to the outside. In the long-term use process, there will be a lot of dust and soil on the outside. A large amount of soil and dust will affect the damping effect of the damping device. If manual cleaning is required every time, it is too inconvenient and cannot achieve automatic cleaning.

[0005] Therefore, it is necessary to provide a motor home chassis beam damping device to solve the above technical problems. SUMMARY

[0006] The purpose of the present application is to provide a motor home chassis beam damping device to solve the problems of the prior art defects mentioned in the background.

[0007] Based on the above idea, the present application provides the following technical scheme: a motor home chassis beam damping device, comprising a beam one, a beam two, a swing arm and a circular table, the circular table is fixedly connected between the swing arm, the swing arm is hingedly connected with the beam two, further comprising:

[0008] The damping mechanism comprises a piston rod and a hydraulic cylinder, the piston rod extends into the hydraulic cylinder and is slidably connected with the hydraulic cylinder, one end of the hydraulic cylinder is fixedly connected with a connecting seat, one end of the connecting seat is hingedly connected with the circular table through a first supporting plate, one end of the piston rod is hingedly connected with the beam one through a second supporting plate, and a buffer spring is arranged between the connecting seat and the piston rod;

[0009] The hydraulic cylinder is sleeved with a fixing cylinder, the fixing cylinder is fixedly connected with the connecting seat, a plurality of air jet grooves are formed in the outer side of the fixing cylinder, a cleaning mechanism is arranged on the outer side of the buffer spring and used for cleaning the buffer spring, the cleaning mechanism comprises a scraping assembly and a blowing assembly, a transmission member is arranged between the blowing assembly and the scraping assembly, when the piston rod moves, the scraping assembly is pushed to rotate and clean the outer side of the buffer spring, and the blowing assembly is driven by the transmission member to blow and clean the buffer spring.

[0010] As a further scheme of the present application, the piston rod is fixedly connected with a fixing column at one end away from the hydraulic cylinder, and a spiral groove is formed in the outer side of the fixing column.

[0011] As a further scheme of the present application, the scraping assembly comprises:

[0012] A first rotating ring is rotatably connected to one side of the connecting seat;

[0013] A plurality of connecting plates are fixedly connected to the outer side of the first rotating ring and are annularly arranged around the center of the first rotating ring;

[0014] A second rotating ring is fixedly connected with one end of the plurality of connecting plates, and a plurality of connecting shafts are fixedly connected to the inner wall of the second rotating ring, the second rotating ring is sleeved on the outer side of the fixing column, the plurality of connecting shafts extend to the inside of the spiral groove formed in the outer side of the fixing column and are in sliding connection with the fixing column;

[0015] A plurality of brush plates are fixedly connected to the inner wall of the plurality of connecting plates and are in contact with the buffer spring, and are used for cleaning the buffer spring.

[0016] As a further scheme of the present application, the blowing assembly comprises:

[0017] A lifting plate is arranged on the top of the connecting seat, a foldable inflatable air bag is fixedly connected between the lifting plate and the connecting seat, a plurality of communication pipes are fixedly and communicatively connected to the bottom of the inflatable air bag, the plurality of communication pipes extend to the inside of the fixing cylinder and are used for blowing air into the inside of the buffer spring, one-way air outlet valves are arranged on the outer side of the communication pipes, and one-way air inlet valves are arranged on the outer side of the inflatable air bag.

[0018] As a further scheme of the present application, the transmission member comprises:

[0019] An inner gear ring is fixedly connected with the first rotating ring through a support rod, and is arranged on the top of the connecting seat;

[0020] A plurality of reciprocating screw rods are rotatably connected to the top of the connecting seat, a connecting disc is rotatably connected to the top of each of the plurality of reciprocating screw rods, the plurality of reciprocating screw rods all penetrate through the lifting plate and are connected with the lifting plate through a ball nut pair, are used for driving the lifting plate to reciprocatingly lift and descend, and make the inflatable air bag inflate and deflate;

[0021] A plurality of first gears are fixedly connected to the outside of the plurality of reciprocating lead screws, and the plurality of first gears are meshingly connected with the inner gear ring.

[0022] As a further scheme of the present application, the fixed cylinder is rotatably connected with a rotating disc at the top of one end of the piston rod, a plurality of dust cleaning mechanisms are arranged on the top of the rotating disc in a circular manner around the center of the piston rod, the dust cleaning mechanisms are used for cleaning the outer side of the part of the piston rod extending into the hydraulic cylinder, and the cleaning mechanism comprises a stripping assembly and a receiving assembly.

[0023] As a further scheme of the present application, the receiving assembly comprises:

[0024] A support frame is fixedly connected to the top of the rotating disc, a first annular scraper is arranged on one side of the support frame and is in abutment with the outer side of the piston rod, a second fixed plate is fixedly connected to the outer side of the support frame, a second telescopic rod and a second spring are fixedly connected between the second fixed plate and the first annular scraper, and the second spring is sleeved on the outer side of the second telescopic rod.

[0025] A second winding rod penetrates through the support frame, a third traction rope is wound and connected to the outer side of the second winding rod, one end of the third traction rope is fixedly connected with the first annular scraper, and when the second winding rod rotates, the first annular scraper is separated from the piston rod by winding the third traction rope.

[0026] Two second gears are fixedly connected to the two ends of the second winding rod, a rack is meshingly connected to the outer side of each of the two second gears, the two racks are connected by elastic members between the bottoms of the two racks and the support frame, and a pushing rod is fixedly connected between the two racks.

[0027] As a further scheme of the present application, the stripping assembly comprises:

[0028] A second arc-shaped scraper is arranged on the top of the first annular scraper and is in contact with the outer side of the piston rod.

[0029] A first fixed plate is fixedly connected to one end of the support frame, a first telescopic rod and a first spring are fixedly connected between the first fixed plate and the second arc-shaped scraper, and the first spring is sleeved on the outer side of the first telescopic rod.

[0030] A first winding rod penetrates through the support frame and is rotatably connected with the support frame, a first traction rope is wound and connected to the outer side of the first winding rod, and the first traction rope penetrates through the first fixed plate and is fixedly connected with the second arc-shaped scraper.

[0031] First winding discs are arranged on the two ends of the first winding rod, the first winding discs are connected with the support frame by torsional springs, and the first winding discs are connected with the first winding rod by one-way bearings.

[0032] The second winding disc is fixedly connected to one side of the second gear, and the second winding disc is connected to the first winding disc through winding.

[0033] As a further scheme of the present application, the first magnetic ring is fixedly connected to the top of the rotating disc, and the second magnetic ring is fixedly connected to the outer side of the connecting plate, and the second magnetic ring is magnetically adsorbed to the first magnetic ring, and when the second magnetic ring rotates, the first magnetic ring is driven to rotate through magnetic adsorption.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] 1. The second rotating ring drives the fixedly connected connecting plate to rotate, and the connecting plate rotates to rotate and clean the buffer spring through the fixedly connected brush plate on the inner side, and the dust and soil on the outer side of the buffer spring is cleaned, and the buffer spring is automatically cleaned each time the shock buffering is performed.

[0036] 2. When the lifting plate rises, the inflatable air bag inflates through the one-way air inlet valve, and when the lifting plate descends, the gas in the inflatable air bag is discharged into the fixed cylinder through the communication pipe, and the gas in the fixed cylinder is discharged through the air jet groove, and the discharged gas sprays and cleans the buffer spring, and the spraying is coordinated with the cleaning of the brush plate, so that the buffer spring is further cleaned, and the buffering effect and service life of the buffer spring are ensured.

[0037] 3. The second winding disc drives the second traction rope to wind, and the first winding disc rotates, and the first winding disc and the first winding rod are connected through the one-way damping bearing, and the first winding rod rotates through the damping effect, and the first winding rod drives the first traction rope to wind, and at this time, the first traction rope drives the second arc-shaped scraper to rise, and the second arc-shaped scraper is attached to the piston rod to peel off the dust on the outer side of the piston rod upward, so that the piston rod is cleaned.

[0038] 4. At this time, the first winding disc and the first traction rope are connected through the one-way bearing, and the first winding disc will not be affected by the reverse rotation of the first traction rope, and the second arc-shaped scraper is quickly reset through the first spring and the first telescopic rod between the first fixed plates, and the first annular scraper is in contact with the bottom of the second arc-shaped scraper at the reset top, and the dust on the top of the first annular scraper is scraped off, so that the cleaned dust is not brought back when the first annular scraper is reset, and the gap between the piston rod and the hydraulic cylinder is effectively cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0039] The present application will be further described below in combination with the drawings and examples.

[0040] Figure 1 is a schematic diagram of the overall structure of the present application;

[0041] Figure 2is the fixed cylinder structure schematic diagram of the application;

[0042] Figure 3 is the fixed column structure schematic diagram of the application;

[0043] Figure 4 is the scraping assembly structure schematic diagram of the application;

[0044] Figure 5 is the blowing assembly structure schematic diagram of the application;

[0045] Figure 6 is the connecting plate structure schematic diagram of the application;

[0046] Figure 7 is the piston rod structure schematic diagram of the application;

[0047] Figure 8 is the rotating disc structure schematic diagram of the application;

[0048] Figure 9 is the dust removal mechanism structure schematic diagram of the application;

[0049] Figure 10 is the stripping assembly structure schematic diagram of the application.

[0050] In the figure: 1, crossbeam one; 2, crossbeam two; 3, swing arm; 4, round table; 401, piston rod; 402, hydraulic cylinder; 403, connecting seat; 5, buffer spring; 601, fixed cylinder; 602, fin; 603, jet groove; 701, first rotating ring; 702, brush plate; 703, connecting plate; 704, second rotating ring; 7041, connecting shaft; 705, fixed column; 706, second magnetic ring; 801, inner gear ring; 802, lifting plate; 803, foldable air bag; 804, first gear; 805, reciprocating wire rod; 806, connecting disc; 9, rotating disc; 900, first magnetic ring; 901, first annular scraper; 902, second arc-shaped scraper; 9021, first fixed plate; 9022, first winding rod; 9023, first winding disc; 9024, first telescopic rod; 9025, first spring; 9026, first traction rope; 9027, second traction rope; 903, support frame; 904, second fixed plate; 905, second telescopic rod; 906, second spring; 907, rack; 908, second gear; 909, second winding rod; 910, second winding disc; 911, third traction rope; 912, push rod. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application.

[0052] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0053] As shown in Figures 1 to 10 , a motor home chassis beam damping device, comprising the following embodiments:

[0054] Embodiment one: as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a motor home chassis beam damping device, comprising beam one 1, beam two 2, swing arm 3 and circular table 4, the circular table 4 is fixedly connected between the swing arm 3, the axle of the wheel is connected with the circular table 4, driving the circular table 4 to move up and down, the swing arm 3 is hingedly connected between the beam two 2, further comprising:

[0055] damping mechanism, the damping mechanism comprises a piston rod 401 and a hydraulic cylinder 402, the piston rod 401 extends into the hydraulic cylinder 402 and is slidably connected with the hydraulic cylinder 402, one end of the hydraulic cylinder 402 is fixedly connected with a connecting seat 403, one end of the connecting seat 403 is hingedly connected with the circular table 4 through a first supporting plate, one end of the piston rod 401 is hingedly connected with the beam one 1 through a second supporting plate, a buffer spring 5 is arranged between the connecting seat 403 and the piston rod 401;

[0056] In specific implementation, through the axle of the wheel connected with the circular table 4, when the wheel bounces up and down, the circular table 4 is damped and buffered by the damping mechanism, the piston rod 401 moves inside the hydraulic cylinder 402, the buffer oil inside the hydraulic cylinder 402 is extruded, the hydraulic buffer mechanism is commonly used inside the hydraulic cylinder 402, when the mechanical system is impacted or vibrated, the piston inside the hydraulic damper moves, driving the liquid to flow in the sealed pipeline, the oil inside the damper cavity repeatedly flows from one cavity to another cavity through the interstice, which is the existing related technology and will not be further described herein, and a plurality of air jet grooves 603 are arranged outside the hydraulic cylinder 402, heat dissipation is carried out through the air jet grooves 603, so as to ensure that the buffer effect is not reduced due to overheating of the buffer oil during buffering inside the hydraulic cylinder 402, and the buffer spring 5 is arranged between the connecting seat 403 and the piston rod 401, buffering is carried out through the buffer spring 5, so as to achieve better damping effect.

[0057] Embodiment two: as shown in Figure 3 , Figure 4 and Figure 5As shown, the outer side of the hydraulic cylinder 402 is sleeved with a fixed cylinder 601, the fixed cylinder 601 is fixedly connected with the connecting seat 403, and a plurality of air injection grooves 603 are formed on the outer side of the fixed cylinder 601. The outer side of the buffer spring 5 is provided with a cleaning mechanism for cleaning the buffer spring 5. The cleaning mechanism includes a scraping assembly and a blowing assembly. A transmission member is arranged between the blowing assembly and the scraping assembly. When the piston rod 401 moves, the scraping assembly is pushed to rotate to clean the outer side of the buffer spring 5. At the same time, the blowing assembly is driven by the transmission member to blow and clean the buffer spring 5.

[0058] In actual use, the outer side of the buffer spring 5 often drives a large amount of dust and soil, which affects the damping effect of the buffer spring 5 during use. Therefore, the scraping assembly is driven to scrape and clean the buffer spring 5 each time the piston rod 401 moves in the hydraulic cylinder 402, and the blowing assembly is used to blow the buffer spring 5, thereby improving the cleaning effect and avoiding manual cleaning, and ensuring the best state of the buffer spring 5.

[0059] As shown in Figure 4 , Figure 6 and Figure 7 , in the embodiment, the piston rod 401 is fixedly connected with a fixed column 705 at the end away from the hydraulic cylinder 402. A spiral groove is formed on the outer side of the fixed column 705.

[0060] The scraping assembly includes:

[0061] A first rotating ring 701 is rotatably connected to one side of the connecting seat 403.

[0062] A plurality of connecting plates 703 are fixedly connected to the outer side of the first rotating ring 701 and are annularly arranged around the center of the first rotating ring 701.

[0063] A second rotating ring 704 is fixedly connected with one end of the plurality of connecting plates 703. A plurality of connecting shafts 7041 are fixedly connected to the inner wall of the second rotating ring 704. The second rotating ring 704 is sleeved on the outer side of the fixed column 705. The plurality of connecting shafts 7041 extend to the inside of the spiral groove formed on the outer side of the fixed column 705 and are slidably connected with the fixed column 705.

[0064] A plurality of brush plates 702 are fixedly connected to the inner wall of the plurality of connecting plates 703 and are in contact with the buffer spring 5 for cleaning the buffer spring 5.

[0065] In specific implementation, when the fixed column 705 at one end of the piston rod 401 approaches the hydraulic cylinder 402, the helical groove on the fixed column 705 pushes the connecting shaft 7041 inside the second rotating ring 704 on the scraping assembly, so as to rotate the second rotating ring 704, which drives the fixedly connected connecting plate 703 to rotate, and the brush plate 702 fixedly connected on the inner side of the connecting plate 703 rotates to clean and sweep the dust and soil outside the buffer spring 5, and the buffer spring 5 is automatically cleaned each time the shock is buffered.

[0066] In this embodiment, as shown in Figure 4 and Figure 5 The blowing assembly comprises:

[0067] The lifting plate 802 is arranged at the top of the connecting seat 403, and the foldable air bag 803 is fixedly connected between the lifting plate 802 and the connecting seat 403. The bottom of the foldable air bag 803 is fixedly communicated with a plurality of communication pipes extending into the fixed cylinder 601, for blowing air into the buffer spring 5, and the outer side of the communication pipe is provided with a one-way air outlet valve. The outer side of the foldable air bag 803 is provided with a one-way air inlet valve.

[0068] The transmission member comprises:

[0069] The inner gear ring 801 is fixedly connected with the first rotating ring 701 through the support rod, and the inner gear ring 801 is arranged at the top of the connecting seat 403.

[0070] A plurality of reciprocating screw rods 805 are rotationally connected at the top of the connecting seat 403, the top of each reciprocating screw rod 805 is rotationally connected with a connecting disc 806, each reciprocating screw rod 805 penetrates through the lifting plate 802 and is connected with the lifting plate 802 through a ball nut pair, for driving the lifting plate 802 to reciprocate, so that the foldable air bag 803 is inflated and deflated.

[0071] A plurality of first gears 804 are fixedly connected to the outer side of each reciprocating screw rod 805, and the plurality of first gears 804 are meshingly connected with the inner gear ring 801.

[0072] In specific implementation, when the brush plate 702 sweeps the buffer spring 5, there will be parts that cannot be swept. Therefore, in the present solution, when the connecting plate 703 rotates to drive the fixedly connected first rotating ring 701 to rotate, the first rotating ring 701 drives the fixedly connected inner gear ring 801 to rotate through the support rod. At this time, the inner gear ring 801 drives the plurality of meshing connected first gears 804, and the plurality of first gears 804 drive the fixedly connected reciprocating lead screw 805 to rotate. The reciprocating lead screw 805 drives the lifting plate 802 to reciprocate up and down. The lifting plate 802 pulls the foldable air bag 803 to expand and contract in the process of lifting. When the lifting plate 802 rises, the foldable air bag 803 expands by the one-way air inlet valve. When the lifting plate 802 descends, the gas in the foldable air bag 803 is discharged into the fixed cylinder 601 through the communication pipe. The gas discharged from the jet groove 603 is used to spray and clean the buffer spring 5. When the brush plate 702 sweeps, it is coordinated to spray, so as to further clean the buffer spring 5, thereby ensuring the buffering effect and service life of the buffer spring 5.

[0073] And a plurality of cooling fins 602 are arranged outside the hydraulic cylinder 402. When the fixed cylinder 601 is inflated, the heat conducted by the cooling fins 602 is taken away, and the hydraulic cylinder 402 is cooled, improving the gas circulation in the fixed cylinder 601.

[0074] Embodiment three: as shown in Figure 8 , Figure 9 and Figure 10 , the fixed cylinder 601 is rotatably connected to the rotating disc 9 at one end of the top of the piston rod 401. The rotating disc 9 is provided with a plurality of dust cleaning mechanisms on the top. The plurality of dust cleaning mechanisms are arranged in a ring shape around the center of the piston rod 401. The dust cleaning mechanism is used to clean the outside of the part of the piston rod 401 extending into the hydraulic cylinder 402. The cleaning mechanism includes a stripping assembly and a receiving assembly.

[0075] In specific implementation, in the process of shock absorption, the piston rod 401 will continuously extend and retract in the hydraulic cylinder 402. The outside of the piston rod 401 will have soil. In the process of reciprocating movement, a large amount of dust will enter the inside of the hydraulic cylinder 402 through the gap, and the dust will affect the extension and retraction of the piston rod 401 and the hydraulic cylinder 402. Therefore, in the present solution, the dust on the outside of the piston rod 401 is stripped by the dust cleaning mechanism arranged at one end of the fixed cylinder 601, so as to avoid the dust entering the gap between the piston rod 401 and the hydraulic cylinder 402.

[0076] In the present embodiment, the receiving assembly includes:

[0077] A support frame 903 is fixedly connected to the top of the rotating disc 9, one side of the support frame 903 is provided with a first annular scraper 901, the first annular scraper 901 is attached to the outer side of the piston rod 401, the outer side of the support frame 903 is fixedly connected with a second fixed plate 904, the second fixed plate 904 is fixedly connected with a second telescopic rod 905 and a second spring 906 between the first annular scraper 901, and the second spring 906 is sleeved outside the second telescopic rod 905;

[0078] A second winding rod 909 penetrates through the support frame 903, the second winding rod 909 is wound and connected with a third traction rope 911 outside, one end of the third traction rope 911 is fixedly connected with the first annular scraper 901, when the second winding rod 909 rotates, the first annular scraper 901 is pulled away from the piston rod 401 by winding the third traction rope 911;

[0079] Two second gears 908 are fixedly connected to both ends of the second winding rod 909 respectively, the outer sides of the two second gears 908 are all meshingly connected with a rack 907, the bottoms of the two racks 907 are all connected with the support frame 903 through elastic members, the elastic members can adopt springs and telescopic rods, the two ends of the springs and the telescopic rods are fixed with the rack 907 and the support frame 903 respectively, and a pushing rod 912 is fixedly connected between the two racks 907.

[0080] The stripping assembly comprises:

[0081] A second arc-shaped scraper 902 is arranged on the top of the first annular scraper 901, and the second arc-shaped scraper 902 is in contact with the outer side of the piston rod 401;

[0082] A first fixed plate 9021 is fixedly connected to one end of the support frame 903, the first fixed plate 9021 is fixedly connected with a first telescopic rod 9024 and a first spring 9025 between the second arc-shaped scraper 902, and the first spring 9025 is sleeved outside the first telescopic rod 9024;

[0083] A first winding rod 9022 penetrates through the support frame 903 and is rotationally connected with the support frame 903, a first traction rope 9026 is wound and connected outside the first winding rod 9022, the first traction rope 9026 penetrates through the first fixed plate 9021 and is fixedly connected with the second arc-shaped scraper 902;

[0084] First winding discs 9023 are arranged on both ends of the first winding rod 9022, the first winding discs 9023 are connected with the support frame 903 through torsional springs, and the first winding discs 9023 are connected with the first winding rod 9022 through one-way bearings;

[0085] The second winding disc 910 is fixedly connected to one side of the second gear 908, and the second winding disc 910 is wound and connected with the second traction rope 9027 between the first winding disc 9023.

[0086] In specific implementation, when the piston rod 401 moves in the damping process, the second arc-shaped scraper 902 and the first annular scraper 901 scrape the outer side of the piston rod 401, and the plurality of first annular scrapers 901 and the first annular scraper 901 form a complete circle. When the piston rod 401 descends to contact the push rod 912, the push rod 912 is pushed to descend. It should be noted that the length of the push rod 912 is selected according to the descending distance of the hydraulic cylinder 402, so that the piston rod 401 can push the push rod 912 when one end of the piston rod 401 descends. When the push rod 912 descends, the fixedly connected rack 907 is driven to move, the rack 907 drives the second gear 908 to rotate through meshing connection, the second gear 908 drives the second winding disc 910 on the outside to rotate, when the second winding disc 910 rotates, the second winding disc 910 drives the second traction rope 9027 to be wound. At this time, the second traction rope 9027 drives the first winding disc 9023 to rotate, the first winding disc 9023 is connected with the first winding rod 9022 through the one-way damping bearing, the first winding rod 9022 is driven to rotate through the damping effect, the first winding rod 9022 drives the first traction rope 9026 to be wound, at this time, the first traction rope 9026 drives the second arc-shaped scraper 902 to ascend, the second arc-shaped scraper 902 is attached to the piston rod 401 and ascends to strip the dust on the outer side of the piston rod 401 upward, so as to achieve the effect of cleaning the piston rod 401;

[0087] The top cross section of the second arc-shaped scraper 902 can be inclined, when the dust is stripped, the dust slides along the inclined surface of the top of the second arc-shaped scraper 902;

[0088] And when the second gear 908 rotates, the fixedly connected second winding rod 909 rotates, and the second winding rod 909 winds the third traction rope 911 to make the third traction rope 911 pull the first annular scraper 901 away from the piston rod 401, and the dust on the top of the first annular scraper 901 and the dust peeled off by the second arc-shaped scraper 902 fall on the second arc-shaped scraper 902 together and move away from the piston rod 401, when the piston rod 401 rises, the push rod 912 drives the second gear 908 to reverse, so that the first annular scraper 901 resets, and at this time, the first winding disc 9023 is connected with the first traction rope 9026 through the one-way bearing, and the first winding disc 9023 will not be affected by the reverse of the first traction rope 9026, and the second arc-shaped scraper 902 resets quickly through the first spring 9025 and the first telescopic rod 9024 between the first fixed plate 9021, and the first annular scraper 901 is in contact with the bottom of the second arc-shaped scraper 902 at the top of the reset, so as to scrape the dust on the top of the first annular scraper 901, avoid that the first annular scraper 901 will bring the cleaned dust back when resetting, and ensure effective cleaning of the gap between the piston rod 401 and the hydraulic cylinder 402.

[0089] In the embodiment, the top of the rotating disc 9 is fixedly connected with a first magnetic ring 900, and the outer side of the connecting plate 703 is fixedly connected with a second magnetic ring 706, and the second magnetic ring 706 is magnetically adsorbed with the first magnetic ring 900, and when the second magnetic ring 706 rotates, the first magnetic ring 900 is driven to rotate through magnetic attraction.

[0090] In specific implementation, when the connecting plate 703 drives the second magnetic ring 706 to rotate, the second magnetic ring 706 drives the first magnetic ring 900 to rotate together, and the first annular scraper 901 and the second arc-shaped scraper 902 in the dust cleaning mechanism on the rotating disc 9 rotate around the piston rod 401, and brushes are arranged on the outer sides of the first annular scraper 901 and the second arc-shaped scraper 902, which can clean the piston rod 401 when rotating.

[0091] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0092] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application and get the best results from the application. The application is only limited by the claims and their full scope and equivalents.

Claims

1. A caravan chassis crossbeam shock absorbing device, comprising a crossbeam 1 (1), a crossbeam 2 (2), a swing arm (3) and a round table (4), wherein the round table (4) is fixedly connected to the swing arm (3), and the swing arm (3) is hingedly connected to the crossbeam 2 (2), characterized in that: Also include: The damping mechanism includes a piston rod (401) and a hydraulic cylinder (402), the piston rod (401) extends to the inside of the hydraulic cylinder (402) and is in sliding connection with the hydraulic cylinder (402), one end of the hydraulic cylinder (402) is fixedly connected with a connecting seat (403), one end of the connecting seat (403) is hinged with the circular table (4) through the first supporting plate, one end of the piston rod (401) is hinged with the second supporting plate beam (1), and the buffer spring (5) is arranged between the connecting seat (403) and the piston rod (401); The outer side of the hydraulic cylinder (402) is provided with a fixed cylinder (601), the fixed cylinder (601) is fixedly connected with the connecting seat (403), and a plurality of air injection grooves (603) are formed in the outer side of the fixed cylinder (601), the outer side of the buffer spring (5) is provided with a cleaning mechanism, which is used for cleaning the buffer spring (5), the cleaning mechanism comprises a scraping assembly and a blowing assembly, and a transmission member is arranged between the blowing assembly and the scraping assembly, when the piston rod (401) moves, the scraping assembly is pushed to rotate to clean the outer side of the buffer spring (5), and the blowing assembly is driven by the transmission member to blow and clean the buffer spring (5); The piston rod (401) is fixedly connected with a fixed column (705) away from one end of the hydraulic cylinder (402), and a spiral groove is formed in the outer side of the fixed column (705); The scraping assembly comprises: A first rotating ring (701) is rotatably connected to one side of the connecting seat (403); A plurality of connecting plates (703) are fixedly connected to the outer side of the first rotating ring (701), and are annularly arranged around the center of the first rotating ring (701); A second rotating ring (704) is fixedly connected with one end of the plurality of connecting plates (703), and a plurality of connecting shafts (7041) are fixedly connected to the inner wall of the second rotating ring (704), the second rotating ring (704) is sleeved on the outer side of the fixed column (705), and the plurality of connecting shafts (7041) extend into the spiral groove formed in the outer side of the fixed column (705) and are in sliding connection with the fixed column (705); A plurality of brush plates (702) are respectively fixedly connected to the inner walls of the plurality of connecting plates (703) and are in contact with the buffer spring (5), and are used for cleaning the buffer spring (5).

2. The RV chassis cross member shock absorbing device of claim 1, wherein: The blowing assembly comprises a lifting plate (802) arranged on the top of the connecting seat (403), a foldable inflatable air bag (803) is fixedly connected between the lifting plate (802) and the connecting seat (403), a plurality of communication pipes are fixedly communicated at the bottom of the inflatable air bag (803), the plurality of communication pipes extend into the inside of the fixed cylinder (601), and are used for blowing air into the inside of the buffer spring (5), and one-way air outlet valves are arranged on the outer sides of the communication pipes.

3. The RV chassis crossmember shock absorber of claim 2, wherein: The transmission member comprises: An inner gear ring (801) is fixedly connected with the first rotating ring (701) through a supporting rod, and the inner gear ring (801) is arranged on the top of the connecting seat (403); A plurality of reciprocating screw rods (805) are rotatably connected to the top of the connecting base (403), a plurality of connecting discs (806) are rotatably connected to the top of the plurality of reciprocating screw rods (805), and the plurality of reciprocating screw rods (805) all penetrate the lifting plate (802) and are connected with the lifting plate (802) through a ball nut pair, for driving the lifting plate (802) to reciprocatingly lift, so that the inflatable air bag (803) is inflated and deflated; A plurality of first gears (804) are fixedly connected to the outer sides of the plurality of reciprocating screw rods (805), and the plurality of first gears (804) are meshingly connected with the inner gear ring (801).

4. The RV chassis crossmember damping device of claim 3, wherein: The fixing cylinder (601) is rotatably connected with a rotating disc (9) near the top of one end of the piston rod (401), a plurality of dust cleaning mechanisms are arranged on the top of the rotating disc (9), the plurality of dust cleaning mechanisms are annularly arranged around the center of the piston rod (401), and the dust cleaning mechanisms are used for cleaning the outer side of the part of the piston rod (401) extending to the hydraulic cylinder (402). The cleaning mechanism comprises a stripping assembly and a receiving assembly.

5. The RV chassis crossmember shock absorbing device of claim 4, wherein: The receiving assembly comprises: A support frame (903) is fixedly connected to the top of the rotating disc (9), a first annular scraper (901) is arranged on one side of the support frame (903), the first annular scraper (901) is attached to the outer side of the piston rod (401), a second fixed plate (904) is fixedly connected to the outer side of the support frame (903), a second telescopic rod (905) and a second spring (906) are fixedly connected between the second fixed plate (904) and the first annular scraper (901), and the second spring (906) is sleeved on the outer side of the second telescopic rod (905); A second winding rod (909) penetrates the support frame (903), a third traction rope (911) is woundly connected to the outer side of the second winding rod (909), one end of the third traction rope (911) is fixedly connected with the first annular scraper (901), and when the second winding rod (909) rotates, the first annular scraper (901) is separated from the piston rod (401) by winding the third traction rope (911); Two second gears (908) are fixedly connected to the two ends of the second winding rod (909), a rack (907) is meshingly connected to the outer side of each of the two second gears (908), the two racks (907) are connected through elastic members between the bottoms of the two racks (907) and the support frame (903), and a pushing rod (912) is fixedly connected between the two racks (907).

6. The RV chassis crossmember shock absorbing device of claim 5, wherein: The stripping assembly comprises: A second arc-shaped scraper (902) is arranged on the top of the first annular scraper (901), and the second arc-shaped scraper (902) is in contact with the outer side of the piston rod (401); A first fixed plate (9021) is fixedly connected to one end of the support frame (903), a first telescopic rod (9024) and a first spring (9025) are fixedly connected between the first fixed plate (9021) and the second arc-shaped scraper (902), and the first spring (9025) is sleeved on the outer side of the first telescopic rod (9024). The first winding rod (9022) penetrates the support frame (903) and is rotationally connected with the support frame (903), and the outer side of the first winding rod (9022) is wound and connected with the first traction rope (9026); the first traction rope (9026) penetrates the first fixed plate (9021) and is fixedly connected with the second arc-shaped scraper (902); The first winding disc (9023) is arranged at the two ends of the first winding rod (9022), and the first winding disc (9023) and the support frame (903) are connected through a torsion spring; the first winding disc (9023) and the first winding rod (9022) are connected through a one-way bearing; The second winding disc (910) is fixedly connected to one side of the second gear (908), and the second winding disc (910) and the first winding disc (9023) are wound and connected with the second traction rope (9027).

7. The RV chassis crossmember shock absorber of Claim 6, wherein: The top of the rotating disc (9) is fixedly connected with a first magnetic ring (900), the outer side of the connecting plate (703) is fixedly connected with a second magnetic ring (706), the second magnetic ring (706) is magnetically adsorbed with the first magnetic ring (900), and when the second magnetic ring (706) rotates, the first magnetic ring (900) is driven to rotate through magnetic adsorption.

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