Connecting structure of sightseeing trailer

Abstract

The invention discloses a sightseeing trailer connecting structure, and belongs to the technical field of sightseeing trailer connecting structures, the sightseeing trailer connecting structure comprises a bottom frame and a supporting plate, and the bottom frame is provided with a connecting assembly used for connecting the supporting plate; the connecting assembly comprises hydraulic rods symmetrically and fixedly installed on the top wall of the bottom frame, the output ends of the hydraulic rods are hinged to the supporting plate, the bottom frame is provided with a pushing assembly matched with the hydraulic rods, and an installation block is fixedly installed on the bottom wall of the supporting plate. According to the scheme, by arranging a balancing weight, when the trailer goes uphill and downhill and the supporting plate inclines, the balancing weight can move, a corresponding push rod is driven to move through a first elastic air bag or a second elastic air bag, and a corresponding switch is pressed through the push rod, so that the output end of a hydraulic rod extends or contracts, and the supporting plate can be leveled; the supporting plate is in a horizontal state in the uphill or downhill process, and the effect of improving the comfort level of passengers is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sightseeing trailer connection structures, and more specifically, to a sightseeing trailer connection structure. Background Art

[0002] A sightseeing vehicle is a vehicle specially designed for tourism sightseeing, with characteristics such as environmental protection, energy conservation, good viewing experience, and high flexibility.

[0003] Common sightseeing vehicles include sightseeing trailers and sightseeing cable cars. Among them, sightseeing cable cars are mainly suitable for overlooking the view from a high altitude and scenarios that need to cross complex terrains, while sightseeing trailers are mainly suitable for ground sightseeing and scenarios that require flexibility and a large passenger capacity. The sightseeing trailer is connected to a towing vehicle (such as a truck, bus, or special towing vehicle) through a towing device, and the towing vehicle provides power and pulls the trailer to travel.

[0004] Since sightseeing trailers are mainly used for ground sightseeing, and generally the floor area of scenic spots is relatively large, and in order to improve the ornamental value, there may be slopes on the ground. Especially in some mountainous areas, there are easy ups and downs. Then when encountering a slope, the sightseeing trailer will tilt along with the slope surface, which will affect the comfort of the passengers. There may be a risk of falling for children or the elderly, and when children are drinking water, the tilt of the sightseeing trailer is likely to cause the passengers to choke, seriously affecting the comfort of the passengers. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a sightseeing trailer connection structure, which can achieve the purpose of improving the comfort of passengers.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A sightseeing trailer connection structure includes a chassis and a support plate, and a connection component for connecting the support plate is provided on the chassis; The connection component includes hydraulic rods symmetrically and fixedly installed on the top wall of the chassis, and the output ends of the hydraulic rods are respectively hinged to the support plate. A pushing component cooperating with the hydraulic rods is provided on the chassis. An installation block is fixedly installed on the bottom wall of the support plate, switches are symmetrically and fixedly installed on the installation block, and the two switches are respectively electrically connected to the corresponding hydraulic rods. An adjustment component is provided on the installation block, and the adjustment component adjusts the telescopic movement of the hydraulic rods through the switches.

[0008] Further, the adjusting assembly includes a sliding groove formed in the mounting block. A counterweight block is slidably mounted in the sliding groove. A first elastic airbag and a second elastic airbag are symmetrically mounted on the counterweight block. The sides of the first elastic airbag and the second elastic airbag away from the counterweight block are both fixedly connected to the sliding groove. An air groove communicating with the elastic airbag is formed in the mounting block. A push rod of a push switch is slidably mounted in the air groove. The hydraulic rod includes a hydraulic cylinder fixedly mounted on the top wall of the chassis. A vertical rod is vertically slidably mounted in the hydraulic cylinder. The top end of the vertical rod is hinged to the support plate. An oil delivery pipe is inserted into the top wall of the hydraulic cylinder. A locking assembly cooperating with the mounting block is provided on the hydraulic rod.

[0009] Further, the locking assembly includes a fixing groove formed in the hydraulic cylinder. A horizontal groove is formed in the vertical rod. A fixing rod is slidably mounted in the horizontal groove. A first air pipe is inserted into the horizontal groove. An installation groove communicating with one end of the first air pipe away from the fixing groove is formed in the mounting block. A driving assembly is provided in the installation groove.

[0010] Further, the driving assembly includes a linkage plate slidably and sealingly mounted in the installation groove. An electromagnet is embedded in the linkage plate. A first spring is jointly mounted between the top wall of the linkage plate and the installation groove. A first magnet mutually repelling the electromagnet is embedded in the counterweight block. A position sensor electrically connected to the electromagnet is provided on the bottom wall of the sliding groove.

[0011] Further, the pushing assembly includes a first elastic telescopic rod hinged to the bottom wall of the chassis. Hydraulic oil is contained in the space below the vertical rod in the hydraulic cylinder. A first hydraulic pipe is inserted into the bottom wall of the hydraulic cylinder. A second elastic telescopic rod is fixedly mounted on the bottom wall of the chassis. The output end of the second elastic telescopic rod is hinged to the first elastic telescopic rod. A linkage assembly for controlling the extension of the output end of the second elastic telescopic rod is provided on the chassis. The first hydraulic pipe is communicated with the first elastic telescopic rod through the linkage assembly.

[0012] Further, the linkage assembly includes a groove formed in the chassis. A linkage rod is horizontally slidably mounted in the groove. A second spring is jointly mounted between the linkage rod and the groove. The first hydraulic pipe is communicated with the groove. A second hydraulic pipe communicating with the input end of the first elastic telescopic rod is inserted into the bottom wall of the groove. There is hydraulic oil in the groove. A third hydraulic pipe communicating with the second elastic telescopic rod is inserted into the side wall of the groove.

[0013] Further, an installation frame is fixedly mounted on the output end of the first elastic telescopic rod. A roller is rotatably mounted on the installation frame. A ratchet wheel rotatably cooperating with the installation frame is fixedly mounted on the roller. A ratchet pawl cooperating with the ratchet wheel is provided on the installation frame.

[0014] Furthermore, a pressure relief groove is formed in the chassis, and the pressure relief groove is communicated with the groove. A piston plate is slidably installed in the pressure relief groove, and an electric telescopic rod with an output end fixedly connected to the piston plate is installed on the chassis.

[0015] Furthermore, a limiting rod hinged to the chassis is fixedly installed on the bottom wall of the support plate.

[0016] Furthermore, a rotating rod is rotatably installed on the counterweight, and the rotating rod is rotatably matched with the sliding groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this solution, by setting the counterweight, when the support plate tilts due to the trailer going uphill or downhill, the counterweight will displace, and drive the corresponding push rod to move through the first elastic airbag or the second elastic airbag. And by pressing the corresponding switch with the push rod, the output end of the hydraulic rod extends or contracts, so that the support plate can be leveled, making the support plate in a horizontal state during uphill or downhill, which plays a role in improving the comfort of the passengers; (2) In this solution, by setting the fixing rod, after the support plate is leveled, the counterweight drives the fixing rod to insert into the corresponding fixing groove through the driving component and limits the vertical rod, so that the hydraulic rod can be fixed, avoiding the change of the gravity on the top wall of the support plate when someone gets on or off the vehicle to take pictures, resulting in the tilting and shaking of the support plate, and further improving the comfort of the passengers; (3) In this solution, by setting the first elastic telescopic rod, when going uphill, the output end of the hydraulic rod on the side of the counterweight close to the first elastic airbag contracts, and drives the output end of the first elastic telescopic rod to extend. And during the extension of the output end of the first elastic telescopic rod, a reaction force will be applied to the trailer, so that it can assist the trailer to go uphill, effectively avoiding the discomfort caused to the passengers by the trailer's lack of power and backward movement. At the same time, it can also drive the output end of the second elastic telescopic rod to extend, and press the output end of the first elastic telescopic rod on the slope, so as to improve the assisting effect and further improve the comfort of the passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a cross-sectional view of the chassis and the support plate of the present invention; Figure 3 is of the present invention Figure 2 the enlarged view at A in; Figure 4 is of the present invention Figure 2 the enlarged view at B in; Figure 5 is a combined view of the chassis, the support plate and the mounting block of the present invention; Figure 6 Combined drawing of the hydraulic cylinder, vertical rod, fixed groove and fixed rod of the present invention; Figure 7 Combined drawing of the first elastic telescopic rod and the second hydraulic pipe of the present invention; Figure 8 Combined drawing of the ratchet wheel and the ratchet pawl of the present invention.

[0019] Description of reference numerals in the figure: 1. Chassis; 2. Support plate; 3. Connection assembly; 301. Hydraulic rod; 3011. Hydraulic cylinder; 3012. Vertical rod; 3013. Oil delivery pipe; 302. Mounting block; 303. Switch; 4. Adjustment assembly; 401. Counterweight; 402. First elastic airbag; 403. Second elastic airbag; 404. Air groove; 405. Push rod; 5. Locking assembly; 501. Fixed groove; 502. Fixed rod; 503. First air pipe; 6. Driving assembly; 601. Linking plate; 602. Electromagnet; 603. First spring; 604. First magnet; 605. Position sensor; 7. Pushing assembly; 701. First elastic telescopic rod; 702. First hydraulic pipe; 703. Second elastic telescopic rod; 8. Linking assembly; 801. Groove; 802. Linking rod; 803. Second spring; 804. Second hydraulic pipe; 805. Third hydraulic pipe; 901. Mounting frame; 902. Roller; 903. Ratchet wheel; 904. Ratchet pawl; 101. Pressure relief groove; 102. Piston plate; 103. Electric telescopic rod; 11. Limiting rod; 12. Rotating rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 8 , a connection structure for a sightseeing trailer, including a chassis 1 and a support plate 2, and a connection assembly 3 for connecting the support plate 2 is provided on the chassis 1; The connection component 3 includes hydraulic rods 301 symmetrically and fixedly installed on the top wall of the chassis 1, and the output ends of the hydraulic rods 301 are respectively hinged to the support plate 2. A pushing component 7 cooperating with the hydraulic rods 301 is provided on the chassis 1. An installation block 302 is fixedly installed on the bottom wall of the support plate 2. Switches 303 are symmetrically and fixedly installed on the installation block 302, and the two switches 303 are respectively electrically connected to the corresponding hydraulic rods 301. An adjustment component 4 is provided on the installation block 302, and the adjustment component 4 adjusts the telescopic movement of the hydraulic rods 301 through the switches 303.

[0022] The adjustment component 4 includes a chute opened on the installation block 302. A counterweight block 401 is slidably installed in the chute. A first elastic airbag 402 and a second elastic airbag 403 are respectively and symmetrically installed on the counterweight block 401, and the sides of the first elastic airbag 402 and the second elastic airbag 403 away from the counterweight block 401 are respectively fixedly connected to the chute. An air groove 404 communicating with the elastic airbag is opened on the installation block 302. A push rod 405 pressing the switch 303 is slidably installed in the air groove 404. The hydraulic rod 301 includes a hydraulic cylinder 3011 fixedly installed on the top wall of the chassis 1. A vertical rod 3012 is vertically slidably installed in the hydraulic cylinder 3011, and the top end of the vertical rod 3012 is hinged to the support plate 2. An oil delivery pipe 3013 is inserted into the top wall of the hydraulic cylinder 3011. A locking component 5 cooperating with the installation block 302 is provided on the hydraulic rod 301.

[0023] During use, the tractor drives the trailer to move. When encountering an uphill section, as the tractor drives the trailer to move up the slope, the support plate 2 gradually tilts. During the tilting process of the support plate 2, the mounting block 302 is driven to tilt. At this time, under the action of gravity, the counterweight 401 moves along the chute towards the second elastic airbag 403 and compresses the second elastic airbag 403. Then, the air flow in the second elastic airbag 403 flows into the corresponding air groove 404, thereby driving the push rod 405 on the side of the counterweight 401 close to the second elastic airbag 403 and squeezing the switch 303 on the side of the counterweight 401 close to the second elastic airbag 403. At this time, the hydraulic rod 301 on the side of the counterweight 401 close to the second elastic airbag 403 extends, and the output end of the hydraulic rod 301 on the side of the counterweight 401 away from the second elastic airbag 403 contracts. As the two hydraulic rods 301 are adjusted, the support plate 2 gradually becomes horizontal again. As the support plate 2 gradually becomes horizontal, the second elastic airbag 403 gradually extends and drives the counterweight 401 to reset. At the same time, during the extension process of the second elastic airbag 403, it inhales air from the corresponding air groove 404. Then, the push rod 405 on the side of the counterweight 401 close to the second elastic airbag 403 resets and disengages from the corresponding switch 303. At this time, the two hydraulic rods 301 stop working. Similarly, when going downhill, the counterweight 401 moves towards the first elastic airbag 402 and squeezes the first elastic airbag 402. Then, the first elastic airbag 402 drives the push rod 405 on the side of the counterweight 401 close to the first elastic airbag 402 to move and presses the switch 303 on the side of the counterweight 401 close to the first elastic airbag 402. Thereby, the output end of the hydraulic rod 301 on the side of the counterweight 401 close to the first elastic airbag 402 can be extended, and the output end of the hydraulic rod 301 on the side of the counterweight 401 close to the second elastic airbag 403 can be contracted to level the support plate 2. And when the support plate 2 is in a horizontal state, the first elastic airbag 402 drives the counterweight 401 to reset and makes the push rod 405 disengage from the switch 303. That is, during uphill or downhill, the support plate 2 can be in a horizontal state, which plays a role in improving the comfort of the passengers.

[0024] As Figure 2 , Figure 3 , Figure 6 As shown in the figure, the locking assembly 5 includes a fixing groove 501 opened on the hydraulic cylinder 3011. A horizontal groove is opened on the vertical rod 3012. A fixing rod 502 is slidably installed in the horizontal groove. A first air pipe 503 is inserted into the horizontal groove. An installation groove communicated with the end of the first air pipe 503 away from the fixing groove 501 is opened on the mounting block 302. A driving assembly 6 is arranged in the installation groove.

[0025] The driving assembly 6 includes a linkage plate 601 slidably and sealingly installed in the installation groove. An electromagnet 602 is embedded in the linkage plate 601. A first spring 603 is commonly installed between the top wall of the linkage plate 601 and the installation groove. A first magnet 604 that repels the electromagnet 602 is embedded in the counterweight 401. A position sensor 605 electrically connected to the electromagnet 602 is provided on the bottom wall of the sliding groove.

[0026] By adopting the above technical solution, when the hydraulic rod 301 extends, the oil pipeline 3013 sucks hydraulic oil from the hydraulic cylinder 3011 and makes the vertical rod 3012 move upward. When the hydraulic rod 301 contracts, the hydraulic oil flows into the hydraulic cylinder 3011 through the oil pipeline 3013 and makes the vertical rod 3012 move downward. Then when the counterweight 401 moves and squeezes the first elastic airbag 402 or the second elastic airbag 403, the counterweight 401 gradually moves away from the position sensor 605. At this time, the electromagnet 602 is powered off and the repulsive force between the electromagnet 602 and the first magnet 604 disappears. Then the first spring 603 drives the linkage plate 601 to move upward. During the upward movement of the linkage plate 601, air is sucked from the horizontal groove through the first air pipe 503, and the fixed rod 502 is driven to disengage from the fixed groove 501. At this time, the vertical rod 3012 can move up and down normally. After the support plate 2 is in a horizontal state, the counterweight 401 drives the first magnet 604 to reset. During the reset process of the counterweight 401, it contacts the position sensor 605 again. When the reset of the counterweight 401 is completed, the position sensor 605 is triggered and the electromagnet 602 is powered on. Then under the action of the magnetic field of the electromagnet 602, the first magnet 604 drives the linkage plate 601 to move downward and compresses the first spring 603. During the downward movement of the linkage plate 601, the gas in the sliding groove is squeezed and flows into the horizontal groove through the first air pipe 503. Then the gas pressure in the horizontal groove increases. Under the action of the pressure, the fixed rod 502 moves towards the fixed groove 501 and inserts into the fixed groove 501, so that the hydraulic rod 301 can be fixed, avoiding the change of the gravity on the top wall of the support plate 2 when someone gets on or off the vehicle to take pictures, resulting in the inclination and shaking of the support plate 2, and further improving the comfort of the passengers.

[0027] Such as Figure 2 、 Figure 4 、 Figure 6 、 Figure 7As shown, the pushing component 7 includes a first elastic telescopic rod 701 hinged to the bottom wall of the chassis 1. The space in the hydraulic cylinder 3011 below the vertical rod 3012 is filled with hydraulic oil, and a first hydraulic pipe 702 is inserted into the bottom wall of the hydraulic cylinder 3011. A second elastic telescopic rod 703 is fixedly installed on the bottom wall of the chassis 1, and the output end of the second elastic telescopic rod 703 is hinged to the first elastic telescopic rod 701. A linkage component 8 for controlling the extension of the output end of the second elastic telescopic rod 703 is provided on the chassis 1, and the first hydraulic pipe 702 is communicated with the first elastic telescopic rod 701 through the linkage component 8.

[0028] The linkage component 8 includes a groove 801 formed in the chassis 1. A linkage rod 802 is horizontally slidably installed in the groove 801. A second spring 803 is jointly installed between the linkage rod 802 and the groove 801. The first hydraulic pipe 702 is communicated with the groove 801. A second hydraulic pipe 804 communicated with the input end of the first elastic telescopic rod 701 is inserted into the bottom wall of the groove 801. There is hydraulic oil in the groove 801, and a third hydraulic pipe 805 communicated with the second elastic telescopic rod 703 is inserted into the side wall of the groove 801.

[0029] By adopting the above technical solution, when going uphill, the vertical rod 3012 on the side of the counterweight 401 close to the first elastic airbag 402 will move downward, and then the hydraulic oil in the hydraulic cylinder 3011 below the vertical rod 3012 will be squeezed, and will flow through the first hydraulic pipe 702 and the linkage component 8 into the first elastic telescopic rod 701. Then, during the walking of the trailer, the output end of the first elastic telescopic rod 701 will extend, and during the extension of the output end of the first elastic telescopic rod 701, a reaction force will be applied to the trailer, so as to assist the trailer to go uphill, effectively avoid the discomfort caused to the passengers by the trailer's insufficient power and backward movement, and further improve the comfort of the passengers.

[0030] After the hydraulic oil flows through the first hydraulic pipe 702 to the linkage assembly 8 in the hydraulic cylinder 3011, the hydraulic oil will flow through the first hydraulic pipe 702 into the groove 801, and exert a thrust on the linkage rod 802. Then, under the action of the thrust, the linkage rod 802 moves along the groove 801 and compresses the second spring 803. And during the movement of the linkage rod 802, it will compress the hydraulic oil in the groove 801, and make the hydraulic oil in the groove 801 flow through the third hydraulic pipe 805 into the second elastic telescopic rod 703. Then, under the action of the hydraulic oil in the groove 801, the output end of the second elastic telescopic rod 703 extends, and during the extension of the output end of the second elastic telescopic rod 703, the output end of the second elastic telescopic rod 703 can be pressed against the slope. Then, when the linkage rod 802 is disengaged from the second hydraulic pipe 804, the hydraulic oil in the hydraulic cylinder 3011 below the vertical rod 3012 can flow through the groove 801 and the second hydraulic pipe 804 into the first elastic telescopic rod 701, and assist the trailer to go uphill. That is, by setting the second elastic telescopic rod 703, the output end of the first elastic telescopic rod 701 can be pressed against the slope, thereby improving the assisting effect of the first elastic telescopic rod 701.

[0031] When the trailer finishes climbing the slope, the vertical rod 3012 on the side of the counterweight 401 close to the first elastic airbag 402 moves upward along the hydraulic cylinder 3011. At this time, the space in the hydraulic cylinder 3011 below the vertical rod 3012 sucks the hydraulic oil from the first elastic telescopic rod 701 through the first hydraulic pipe 702, the groove 801, and the second hydraulic pipe 804. At the same time, the output end of the first elastic telescopic rod 701 contracts, and as the first elastic telescopic rod 701 contracts, the pressure in the groove 801 gradually decreases. At this time, the second spring 803 drives the linkage rod 802 to reset along the groove 801, and during the reset of the linkage rod 802, the output end of the second elastic telescopic rod 703 contracts and drives the first elastic telescopic rod 701 to reset, playing a role in preparing for the next operation.

[0032] As Figure 2 , Figure 8 As shown in the figure, an installation frame 901 is fixedly installed on the output end of the first elastic telescopic rod 701. A roller 902 is rotatably installed on the installation frame 901. A ratchet wheel 903 that is rotationally matched with the installation frame 901 is fixedly installed on the roller 902. A ratchet pawl 904 that cooperates with the ratchet wheel 903 is provided on the installation frame 901.

[0033] By adopting the above technical solution, during the process of the output end of the second elastic telescopic rod 703 extending and driving the first elastic telescopic rod 701 to rotate around the hinge point, the first elastic telescopic rod 701 drives the roller 902 to contact the slope surface through the mounting bracket 901, and as the trailer moves, the roller 902 can be driven to roll on the slope surface. Thus, the sliding friction between the output end of the first elastic telescopic rod 701 and the slope surface can be converted into the rolling friction between the roller 902 and the slope surface, which plays a role in reducing the wear of the first elastic telescopic rod 701. And under the action of the ratchet 903 and the pawl 904, the reverse rotation of the roller 902 can be avoided, and further, the resistance of the trailer can be increased during the process of the trailer slipping. When tourists need to stop to take pictures midway, the setting of the roller 902 can effectively prevent the driver from forgetting to pull the handbrake and causing panic due to the trailer slipping, further improving the comfort of the passengers.

[0034] As Figure 2 , Figure 4 shown, a pressure relief groove 101 is formed on the chassis 1, and the pressure relief groove 101 is communicated with the groove 801. A piston plate 102 is slidably installed in the pressure relief groove 101, and an electric telescopic rod 103 with an output end fixedly connected to the piston plate 102 is installed on the chassis 1.

[0035] By adopting the above technical solution, when it is necessary to reverse the vehicle on a slope, the user can first control the output end of the electric telescopic rod 103 to contract. During the process of the output end of the electric telescopic rod 103 contracting, the piston plate 102 is driven to slide along the pressure relief groove 101. Then, the output end of the second elastic telescopic rod 703 contracts and drives the hydraulic oil in the groove 801 located on the side of the linkage rod 802 close to the second spring 803 to flow into the pressure relief groove 101. And during the process of the output end of the second elastic telescopic rod 703 contracting, the roller 902 can be driven to disengage from the slope surface through the first elastic telescopic rod 701 and the mounting bracket 901, which plays a role in ensuring the normal reverse of the trailer.

[0036] As Figure 5 shown, a limiting rod 11 hinged to the chassis 1 is fixedly installed on the bottom wall of the support plate 2.

[0037] By adopting the above technical solution, during the process of the hydraulic rod 301 adjusting the support plate 2, the support plate 2 drives the limiting rod 11 to rotate around the hinge point on the chassis 1, so that the support plate 2 can be limited, effectively preventing the support plate 2 from tilting towards the direction of the limiting rod 11.

[0038] As Figure 3 shown, a rotating rod 12 is rotatably installed on the counterweight 401, and the rotating rod 12 is rotationally matched with the sliding groove.

[0039] By adopting the above technical solution, during the process of the counterweight block 401 moving in the chute, by arranging the rotating rod 12, the sliding friction between the counterweight block 401 and the chute can be converted into the rolling friction between the rotating rod 12 and the chute, thereby reducing the friction force between the counterweight block 401 and the chute, and ensuring that the counterweight block 401 can move quickly when the support plate 2 is tilted.

[0040] Usage method: During use, the tractor drives the trailer to move. When encountering an uphill section, as the tractor drives the trailer to move up the slope, the support plate 2 gradually tilts. During the tilting process of the support plate 2, the mounting block 302 is driven to tilt. At this time, under the action of gravity, the counterweight 401 moves along the chute towards the second elastic airbag 403, and drives the push rod 405 to squeeze the switch 303 on the side of the counterweight 401 close to the second elastic airbag 403. At this time, the hydraulic rod 301 on the side of the counterweight 401 close to the second elastic airbag 403 extends, and the output end of the hydraulic rod 301 on the side of the counterweight 401 far from the second elastic airbag 403 contracts. As the two hydraulic rods 301 are adjusted, the support plate 2 gradually becomes horizontal again. Similarly, when going downhill, the counterweight 401 moves towards the first elastic airbag 402 and squeezes the first elastic airbag 402. Then the first elastic airbag 402 drives the push rod 405 located on the side of the counterweight 401 close to the first elastic airbag 402 to move, and presses the switch 303 located on the side of the counterweight 401 close to the first elastic airbag 402, so that the output end of the hydraulic rod 301 on the side of the counterweight 401 close to the first elastic airbag 402 can extend, and the output end of the hydraulic rod 301 on the side of the counterweight 401 close to the second elastic airbag 403 can contract, and the support plate 2 is leveled. And when the support plate 2 is in a horizontal state, the first elastic airbag 402 drives the counterweight 401 to reset, and the push rod 405 is separated from the switch 303, that is, the support plate 2 can be in a horizontal state during uphill or downhill; during the reset process of the counterweight 401, it contacts the position sensor 605 again. The position sensor 605 is triggered and the electromagnet 602 is energized. Then, under the action of the magnetic field of the electromagnet 602, the first magnet 604 drives the linkage plate 601 to move downward, and the gas in the chute is squeezed and flows through the first air pipe 503 into the horizontal groove. Then the gas pressure in the horizontal groove increases, and under the action of the pressure, the fixing rod 502 moves towards the fixing groove 501 and inserts into the fixing groove 501, so that the hydraulic rod 301 can be fixed; when going uphill, the vertical rod 3012 on the side of the counterweight 401 close to the first elastic airbag 402 will move downward, and then the hydraulic oil in the hydraulic cylinder 3011 below the vertical rod 3012 will be squeezed and flow through the first hydraulic pipe 702 and the linkage assembly 8 into the first elastic telescopic rod 701. Then, during the movement of the trailer, the output end of the first elastic telescopic rod 701 will extend, and during the extension process of the output end of the first elastic telescopic rod 701, a reaction force will be applied to the trailer, so as to assist the trailer to go uphill; when the linkage rod 802 is separated from the second hydraulic pipe 804, the hydraulic oil in the hydraulic cylinder 3011 below the vertical rod 3012 can flow through the groove 801 and the second hydraulic pipe 804 into the first elastic telescopic rod 701, and assist the trailer to go uphill, that is, by setting the second elastic telescopic rod 703, the output end of the first elastic telescopic rod 701 can be pressed on the slope surface.

[0041] As described above, it is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A sightseeing trailer connection structure, comprising a base frame (1) and a support plate (2), wherein the base frame (1) is provided with a connection assembly (3) for connecting the support plate (2); Features: The connection assembly (3) comprises a hydraulic rod (301) symmetrically fixedly mounted on the top wall of the base frame (1), and the output ends of the hydraulic rod (301) are hinged to the support plate (2); the base frame (1) is provided with a pushing assembly (7) cooperating with the hydraulic rod (301); a mounting block (302) is fixedly mounted on the bottom wall of the support plate (2); switches (303) are symmetrically fixedly mounted on the mounting block (302), and two switches (303) are respectively electrically connected to corresponding hydraulic rods (301); an adjusting assembly (4) is provided on the mounting block (302), and the adjusting assembly (4) adjusts the extension and retraction of the hydraulic rod (301) through the switch (303).

2. A sightseeing trailer connection structure according to claim 1, characterized in that: The adjustment component (4) comprises a slide groove provided on the mounting block (302), a counterweight block (401) being slidably mounted in the slide groove, a first elastic airbag (402) and a second elastic airbag (403) being symmetrically mounted on the counterweight block (401), and the first elastic airbag (402) and the second elastic airbag (403) being fixedly connected to the slide groove on the sides away from the counterweight block (401), and an air groove (404) being connected to the elastic airbag is provided on the mounting block (302), and the air groove (404) A push rod (405) having a push switch (303) slidably mounted therein is provided. The hydraulic rod (301) comprises a hydraulic cylinder (3011) fixedly mounted on the top wall of the base frame (1). A vertical rod (3012) is vertically slidably mounted in the hydraulic cylinder (3011), and the top end of the vertical rod (3012) is hinged to the support plate (2). An oil delivery pipe (3013) is inserted into the top wall of the hydraulic cylinder (3011). A locking assembly (5) cooperating with the mounting block (302) is provided on the hydraulic rod (301).

3. A sightseeing trailer connection structure according to claim 2, characterized in that: The locking assembly (5) comprises a fixing groove (501) formed on the hydraulic cylinder (3011), a horizontal groove formed on the vertical rod (3012), a fixing rod (502) slidably mounted in the horizontal groove, a first air pipe (503) inserted in the horizontal groove, a mounting groove formed on the mounting block (302) and connected to an end of the first air pipe (503) away from the fixing groove (501), and a driving assembly (6) is arranged in the mounting groove.

4. A sightseeing trailer connection structure according to claim 3, characterized in that: The driving assembly (6) comprises a linkage plate (601) which is slidably sealed and installed in a mounting groove, an electromagnet (602) being embedded in the linkage plate (601), a first spring (603) being installed between the top wall of the linkage plate (601) and the mounting groove, a first magnet (604) which repel each other with the electromagnet (602) being embedded in the counterweight block (401), and a position sensor (605) which is electrically connected to the electromagnet (602) being provided on the bottom wall of the slide groove.

5. A sightseeing trailer connection structure according to claim 4, characterized in that: The pushing assembly (7) comprises a first elastic telescopic rod (701) hinged on the bottom wall of the base frame (1); a space in the hydraulic cylinder (3011) below the vertical rod (3012) is filled with hydraulic oil; a first hydraulic pipe (702) is inserted into the bottom wall of the hydraulic cylinder (3011); a second elastic telescopic rod (703) is fixedly mounted on the bottom wall of the base frame (1); an output end of the second elastic telescopic rod (703) is hinged to the first elastic telescopic rod (701); a linkage assembly (8) for controlling the extension of the output end of the second elastic telescopic rod (703) is provided on the base frame (1); and the first hydraulic pipe (702) is connected to the first elastic telescopic rod (701) via the linkage assembly (8).

6. A sightseeing trailer connection structure according to claim 5, characterized in that: The linkage assembly (8) comprises a groove (801) provided on the base frame (1), a linkage rod (802) being horizontally slidably mounted in the groove (801), a second spring (803) being mounted between the linkage rod (802) and the groove (801), the first hydraulic pipe (702) being connected to the groove (801), a second hydraulic pipe (804) being connected to an input end of the first elastic telescopic rod (701) being inserted on the bottom wall of the groove (801), hydraulic oil being contained in the groove (801), and a third hydraulic pipe (805) being connected to the second elastic telescopic rod (703) being inserted on the side wall of the groove (801).

7. A sightseeing trailer connection structure according to claim 6, characterized in that: A mounting frame (901) is fixedly mounted on the output end of the first elastic telescopic rod (701), a roller (902) is rotatably mounted on the mounting frame (901), a ratchet (903) rotatably matched with the mounting frame (901) is fixedly mounted on the roller (902), and a ratchet pawl (904) matched with the ratchet (903) is provided on the mounting frame (901).

8. A sightseeing trailer connection structure according to claim 7, characterized in that: The base frame (1) is provided with a pressure relief groove (101), and the pressure relief groove (101) is communicated with the groove (801), a piston plate (102) is slidably mounted in the pressure relief groove (101), and an electric telescopic rod (103) whose output end is fixedly connected to the piston plate (102) is mounted on the base frame (1).

9. A sightseeing trailer connection structure according to claim 8, characterized in that: A limiting rod (11) hinged to the base frame (1) is fixedly mounted on the bottom wall of the support plate (2).

10. A sightseeing trailer connection structure according to claim 9, characterized in that: A rotating rod (12) is rotatably mounted on the counterweight block (401), and the rotating rod (12) is rotatably matched with the sliding groove.

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