Detachable supporting device for new energy semi-trailer

Abstract

The present invention discloses a split support device for a new energy semi-trailer, including an outer support leg and a power shaft. Power switching mechanisms are provided at both ends of the power shaft. When used on an uneven road surface, if one of the bottom plates first tightly supports against the ground, the corresponding second ejector rod will move upward. Under the action of the second ejector rod, the frustum will drive the limit shell, the limit block and the second bevel gear to separate, thereby cutting off the power supply to the second bevel gear, ensuring that the bottom plate that has already contacted the ground will not move downward anymore, and at the same time ensuring that the other bottom plate that has not contacted the ground can continue to move downward until both bottom plates are tightly attached to the ground, so that the device can be used on an uneven road surface, thereby improving the applicability of the device and facilitating the use of the staff without having to look for a suitable height of the backing plate.

Description

Technical Field

[0001] The present invention relates to the technical field of semi-trailers, and particularly relates to a split support device for new energy semi-trailers. Background Technique

[0002] A new energy semi-trailer refers to a semi-trailer driven by new energy technology, including electricity, water-hydrogen, solar energy, etc. as power sources. Compared with traditional fuel semi-trailers, new energy semi-trailers have the characteristics of environmental protection, economy, and high efficiency. They are one of the important means to solve traffic exhaust emissions and improve air quality. New energy vehicles still have a great similarity with traditional vehicles. The semi-trailer structures adopted by existing new energy vehicles are also roughly the same as those of traditional vehicles, and legs will be provided at the bottom. The main function of the semi-trailer legs is to support the semi-trailer to ensure its stability and safety during parking or operation. The semi-trailer legs include linkage legs.

[0003] The linkage leg has only one gearbox, and the left and right legs can be lifted and lowered simultaneously by a single crank. The lifting and lowering efficiency of the linkage leg is relatively high, but it is only applicable to flat roads, with low applicability and cannot be used on uneven roads. When it is necessary to use it on uneven roads, pads need to be placed separately at the bottom of the legs, which is troublesome to operate. Moreover, due to the existence of uneven roads, it is not easy to find pads of appropriate height to make the left and right legs flush, which brings certain difficulties to users. Therefore, in view of the above problems, a split support device for new energy semi-trailers is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and can effectively solve the problems in the background technique.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A split support device for new energy semi-trailers, including outer legs and a power shaft. The two ends of the power shaft are rotatably connected to outer legs. The inner side of the outer legs is slidably connected to inner legs. The bottom end of the inner legs is fixedly connected to a limit plate. A bottom plate is arranged below the limit plate. The inner side of the outer legs is fixedly connected to a fixing plate. A screw rod is rotatably connected to the inner side of the fixing plate. A connecting plate is helically connected to the outer side of the screw rod, and the connecting plate is fixedly connected to the inner legs. The top end of the screw rod is fixedly connected to a first bevel gear. Power switching mechanisms are arranged at both ends of the power shaft. One end of the outer legs is fixedly connected to a connecting shell. A reminder adjustment mechanism is arranged inside the connecting shell. One end of one of the outer legs is fixedly connected to a gearbox. A marking mechanism is arranged at one end of the gearbox.

[0007] Preferably, the power switching mechanism includes a limit block fixedly connected to the power shaft. The outer side of the limit block is slidably connected to a limit housing. The outer side of the limit housing is fixedly connected with a frustum and a limit ring, and the frustum is fixedly connected with the limit ring. The outer side of the limit housing is slidably connected with a second bevel gear, and the second bevel gear meshes with the first bevel gear. One end of the second bevel gear is provided with a first fixing component, and the outer side of the limit housing is provided with a second fixing component.

[0008] Preferably, the first fixing component includes a first bearing fixedly connected to the second bevel gear. The outer side of the first bearing is fixedly connected with a first rotating ring. The top of the first rotating ring is fixedly connected with a first connecting rod, and the first connecting rod is fixedly connected with the outer support leg.

[0009] Preferably, the second fixing component includes a second bearing fixedly connected to the limit housing. The outer side of the second bearing is fixedly connected with a second rotating ring. The top of the second rotating ring is fixedly connected with a third connecting rod. The inner side of the third connecting rod is slidably connected with a guide shaft. One end of the guide shaft is fixedly connected with a second connecting rod, and the second connecting rod is fixedly connected with the outer support leg.

[0010] Preferably, the reminder adjustment mechanism includes a side plate fixedly connected to the inner support leg. One end of the side plate is fixedly connected with a connecting cylinder. The top of the connecting cylinder is fixedly connected with a moving frame, and the moving frame is slidably connected with the connecting shell. The inner side of the top of the moving frame is slidably connected with a second ejector rod, and the top of the second ejector rod is provided with a wedge-shaped surface. The bottom of the second ejector rod is fixedly connected with a chuck. One end of the chuck is engaged with a buckle component. A third spring is arranged outside the second ejector rod, and both ends of the third spring are fixedly connected with the moving frame and the chuck respectively.

[0011] Preferably, the buckle component includes a vertical plate fixedly connected to the moving frame. The inner side of the vertical plate is slidably connected with a clamping block, and the clamping block is engaged with the chuck. One end of the clamping block is fixedly connected with a guide plate, and the guide plate is slidably connected with the vertical plate. One end of the guide plate is fixedly connected with a second spring, and the other end of the second spring is fixedly connected with the vertical plate.

[0012] Preferably, one end of the guide plate is movably provided with a first ejector rod, and the first ejector rod is slidably connected with the limit plate. The bottom of the first ejector rod is fixedly connected with the bottom plate. A retaining disk is fixedly connected to the outer side of the first ejector rod. A first spring is arranged outside the first ejector rod, and both ends of the first spring are fixedly connected with the connecting cylinder and the retaining disk respectively.

[0013] Preferably, one end of the chuck is fixedly connected with a lever, and the lever is slidably connected with the connecting shell. One end of the connecting shell is fixedly connected with an ear plate, and the top of the ear plate is rotatably connected with a stop rod.

[0014] Preferably, the marking mechanism includes an iron ring fixedly connected to the gearbox. A magnet is magnetically attracted to the outside of the iron ring. A positioning pin is fixedly connected to the outside of the magnet. A pointer is arranged on one side of the positioning pin, and the pointer is fixedly connected to the power shaft.

[0015] Preferably, a rotating shaft is movably arranged inside the gearbox. A first gear and a second gear are fixedly connected to the outside of the rotating shaft. A third gear and a fourth gear are fixedly connected to the outside of the power shaft, and the third gear can be meshed with the second gear, and the first gear can be meshed with the fourth gear. One end of the rotating shaft is rotatably connected to a crank.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. A split support device for a new energy semi-trailer. By providing a limit block, a second rotating ring, a second bearing, a limit shell, a frustum, and a second ejector rod; when the second bevel gear needs to drive the first bevel gear to rotate, the limit shell is moved between the second bevel gear and the limit block. The power shaft will drive the second bevel gear to rotate through the limit block and the limit shell. When used on an uneven road surface, if one of the bottom plates first tightly supports against the ground, the corresponding second ejector rod will move upward. Under the action of the second ejector rod, the frustum will drive the limit shell to separate from the limit block and the second bevel gear, thereby cutting off the power to the second bevel gear, ensuring that the bottom plate that has already contacted the ground will not move downward anymore, and at the same time ensuring that the other bottom plate that has not contacted the ground can continue to move downward until both bottom plates are tightly attached to the ground, so that the device can be used on an uneven road surface, thereby improving the applicability of the device and facilitating the use of the staff without having to look for a suitable height of the backing plate.

[0018] 2. A split support device for a new energy semi-trailer. By providing a connecting cylinder, a first ejector rod, a guide plate, a clamping block, a chuck, and a second ejector rod, when the limit shell normally drives the second bevel gear to rotate, the clamping block is engaged with the chuck. When the bottom plate is tightly attached to the ground, the first ejector rod will drive the clamping block to separate from the chuck through the guide plate. At this time, under the pulling force of the third spring, the second ejector rod makes the frustum move along the power shaft through the wedge surface at the end. At the same time, the frustum will also drive the limit shell to separate from the limit block and the second bevel gear. When turning the crank, there is no need to manually separate the limit shell from the limit block and the second bevel gear, which facilitates the use of the staff. At the same time, when the second ejector rod collides with the frustum, a sound will also be emitted to remind the staff that the bottom plate has been tightly attached to the ground.

[0019] 3. A split support device for a new energy semi-trailer. By setting a pointer, an iron ring, a positioning pin, and a magnet, when the staff hears the sound of the second ejector rod hitting the frustum, the staff temporarily stops turning the crank. At this time, a positioning pin is fixed to the outside of the iron ring through the magnet, and at the same time, the positioning pin is aligned with the pointer. The position where the positioning pin is located indicates that the limit block at this position can be engaged with the limit shell, which facilitates the subsequent engagement of the limit shell with the limit block again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of a split support device for a new energy semi-trailer according to the present invention.

[0022] Figure 2 It is a schematic diagram of the internal installation structure of the outer leg of a split support device for a new energy semi-trailer according to the present invention.

[0023] Figure 3 It is a schematic diagram of the internal structure of the gearbox of a split support device for a new energy semi-trailer according to the present invention.

[0024] Figure 4 It is a schematic diagram of the installation structure of the screw of a split support device for a new energy semi-trailer according to the present invention.

[0025] Figure 5 It is a schematic diagram of the installation structure of the first bevel gear of a split support device for a new energy semi-trailer according to the present invention.

[0026] Figure 6 It is a schematic diagram of the cut-open structure of the limit shell of a split support device for a new energy semi-trailer according to the present invention.

[0027] Figure 7 It is a schematic diagram of the installation structure of the second bearing of a split support device for a new energy semi-trailer according to the present invention.

[0028] Figure 8 It is a schematic diagram of the installation structure of the first bearing of a split support device for a new energy semi-trailer according to the present invention.

[0029] Figure 9 It is a schematic diagram of the installation structure of the limit block of a split support device for a new energy semi-trailer according to the present invention.

[0030] Figure 10 Schematic diagram of the installation structure of the lever for a split support device for a new energy semi-trailer according to the present invention.

[0031] Figure 11 Schematic diagram of the installation structure when the chuck of a split support device for a new energy semi-trailer according to the present invention is engaged with the chuck plate.

[0032] Figure 12 Schematic diagram of the installation structure of the chuck of a split support device for a new energy semi-trailer according to the present invention.

[0033] Figure 13 Schematic diagram of the installation structure of the retaining plate of a split support device for a new energy semi-trailer according to the present invention.

[0034] Figure 14 Schematic diagram of the structure of the first ejector rod of a split support device for a new energy semi-trailer according to the present invention.

[0035] Figure 15 For a split support device for a new energy semi-trailer according to the present invention Figure 2 Schematic diagram of the structure at location A.

[0036] Figure 16 Schematic diagram of the installation structure of the pointer of a split support device for a new energy semi-trailer according to the present invention.

[0037] Figure 17 Schematic diagram of the installation structure of the magnet of a split support device for a new energy semi-trailer according to the present invention.

[0038] In the figure: 1, outer support leg; 2, inner support leg; 3, limit plate; 4, bottom plate; 5, connection shell; 6, moving frame; 7, connection plate; 8, fixed plate; 9, screw; 10, first bevel gear; 11, power shaft; 12, limit block; 13, second bevel gear; 14, first bearing; 15, first rotating ring; 16, first connecting rod; 17, second connecting rod; 18, third connecting rod; 19, guide shaft; 20, second rotating ring; 21, second bearing; 22, limit shell; 23, frustum; 24, side plate; 25, connecting cylinder; 26, first ejector rod; 27, retaining plate; 28, first spring; 29, vertical plate; 30, guide plate; 31, second spring; 32, chuck; 33, chuck plate; 34, second ejector rod; 35, third spring; 36, lever; 37, ear plate; 38, retaining rod; 39, gear box; 40, pointer; 41, iron ring; 42, positioning pin; 43, magnet; 44, rotating shaft; 45, crank; 46, first gear; 47, second gear; 48, third gear; 49, fourth gear; 50, limit ring. Detailed implementation manners

[0039] The present invention will be further described below in conjunction with specific embodiments. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent. In order to better illustrate the specific embodiments of the present invention, some components in the attached drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, in the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. The present invention will be further elaborated below in conjunction with specific embodiments.

[0041] Embodiment

[0042] As shown in Figure 1-17 a split support device for a new energy semi-trailer includes outer legs 1 and a power shaft 11. Both ends of the power shaft 11 are rotatably connected to the outer legs 1. The outer legs 1 are fixed to the semi-trailer by bolts. An inner leg 2 is slidably connected to the inner side of the outer leg 1. A limiting plate 3 is fixedly connected to the bottom end of the inner leg 2. A bottom plate 4 is arranged on the lower side of the limiting plate 3. A fixing plate 8 is fixedly connected to the inner side of the outer leg 1. A screw rod 9 is rotatably connected to the inner side of the fixing plate 8. A connecting plate 7 is helically connected to the outer side of the screw rod 9, and the connecting plate 7 is fixedly connected to the inner leg 2. A first bevel gear 10 is fixedly connected to the top end of the screw rod 9. Power switching mechanisms are arranged at both ends of the power shaft 11. A connecting shell 5 is fixedly connected to one end of the outer leg 1. A reminder adjustment mechanism is arranged inside the connecting shell 5. A gear box 39 is fixedly connected to one end of one of the outer legs 1. A marking mechanism is arranged at one end of the gear box 39.

[0043] As a further improvement of the present invention, as shown in Figure 1-9As shown in the figure, the power switching mechanism includes a limit block 12 fixedly connected to the power shaft 11. A limit shell 22 is slidably connected to the outside of the limit block 12. A frustum 23 and a limit ring 50 are fixedly connected to the outside of the limit shell 22, and the frustum 23 is fixedly connected to the limit ring 50. A second bevel gear 13 is slidably connected to the outside of the limit shell 22, and the second bevel gear 13 meshes with the first bevel gear 10. One end of the second bevel gear 13 is provided with a first fixing component, and a second fixing component is provided on the outside of the limit shell 22. When it is necessary for the second bevel gear 13 to drive the first bevel gear 10 to rotate, the limit shell 22 is moved between the second bevel gear 13 and the limit block 12. The power shaft 11 will drive the second bevel gear 13 to rotate through the limit block 12 and the limit shell 22. When used on an uneven road surface, if one of the bottom plates 4 first tightly supports against the ground, the corresponding reminder adjustment mechanism will move upward. Under the action of the reminder adjustment mechanism, the frustum 23 will drive the limit shell 22 to separate from the limit block 12 and the second bevel gear 13, thereby cutting off the power to the second bevel gear 13, ensuring that the bottom plate 4 that has already contacted the ground will not move downward anymore, and at the same time ensuring that the other bottom plate 4 that has not contacted the ground can continue to move downward until both bottom plates 4 are tightly attached to the ground, so that the device can be used on an uneven road surface, thereby improving the applicability of the device and facilitating the use of the staff without having to look for a suitable height of the backing plate. And balls can be provided at the sliding contact parts between the limit shell 22, the limit block 12 and the second bevel gear 13 according to actual design requirements, and the friction between the limit shell 22, the limit block 12 and the second bevel gear 13 is reduced by the balls, facilitating the movement between the limit shell 22, the limit block 12 and the second bevel gear 13.

[0044] As a further improvement of the present invention, as Figure 4 and Figure 5 shown, the first fixing component includes a first bearing 14 fixedly connected to the second bevel gear 13. A first rotating ring 15 is fixedly connected to the outside of the first bearing 14, and the first rotating ring 15 is rotatably connected to the second bevel gear 13. A first connecting rod 16 is fixedly connected to the top of the first rotating ring 15, and the first connecting rod 16 is fixedly connected to the outer leg 1. The support and limit of the second bevel gear 13 can be realized through the first bearing 14 and the first rotating ring 15, ensuring the normal operation of the second bevel gear 13.

[0045] As a further improvement of the present invention, as Figure 4 and Figure 5As shown in the figure, the second fixing component includes a second bearing 21 fixedly connected to the limiting shell 22. A second rotating ring 20 is fixedly connected to the outer side of the second bearing 21. A third connecting rod 18 is fixedly connected to the top end of the second rotating ring 20. A guiding shaft 19 is slidably connected to the inner side of the third connecting rod 18. One end of the guiding shaft 19 is fixedly connected to a second connecting rod 17, and the second connecting rod 17 is fixedly connected to the outer leg 1. Through the second bearing 21 and the second rotating ring 20, the support and limitation of the limiting shell 22 can be realized. At the same time, under the action of the guiding shaft 19, the normal movement of the limiting shell 22 and the frustum 23 in the horizontal direction can be ensured.

[0046] As a further improvement of the present invention, as Figure 2 , Figure 10 , Figure 11 shown, the reminder adjustment mechanism includes a side plate 24 fixedly connected to the inner leg 2. One end of the side plate 24 is fixedly connected to a connecting cylinder 25. The top end of the connecting cylinder 25 is fixedly connected to a moving frame 6, and the moving frame 6 is slidably connected to the connecting shell 5. A second ejector rod 34 is slidably connected to the inner side of the top end of the moving frame 6, and the top end of the second ejector rod 34 is provided with a wedge-shaped surface. The bottom end of the second ejector rod 34 is fixedly connected to a chuck 33. One end of the chuck 33 is engaged with a buckle assembly. A third spring 35 is arranged outside the second ejector rod 34, and both ends of the third spring 35 are fixedly connected to the moving frame 6 and the chuck 33 respectively. When the buckle assembly releases the engagement with the chuck 33, under the pulling force of the third spring 35, the second ejector rod 34 makes the frustum 23 move along the power shaft 11 through the wedge-shaped surface at the end. At the same time, the frustum 23 will also drive the limiting shell 22 to separate from the limiting block 12 and the second bevel gear 13. When turning the crank 45, it is not necessary to manually separate the limiting shell 22 from the limiting block 12 and the second bevel gear 13, which is convenient for the staff to use. At the same time, when the second ejector rod 34 collides with the frustum 23, a sound will also be emitted to remind the staff that the bottom plate 4 has been tightly attached to the ground.

[0047] As a further improvement of the present invention, as Figure 10 , Figure 11 , Figure 12 and Figure 13 shown, the buckle assembly includes a vertical plate 29 fixedly connected to the moving frame 6. A clamping block 32 is slidably connected to the inner side of the vertical plate 29, and the clamping block 32 is engaged with the chuck 33. One end of the clamping block 32 is fixedly connected to a guiding plate 30, and the guiding plate 30 is slidably connected to the vertical plate 29. One end of the guiding plate 30 is fixedly connected to a second spring 31, and the other end of the second spring 31 is fixedly connected to the vertical plate 29. The top surface of the clamping block 32 is provided with a wedge-shaped surface, which is convenient for the chuck 33 to be engaged with the clamping block 32 when moving downward. And the second spring 31 gives a pulling force to the guiding plate 30, and at the same time, the clamping block 32 can realize the clamping and limitation of the chuck 33.

[0048] As a further improvement of the present invention, as Figure 2 , Figure 13 and Figure 14 shown, one end of the guide plate 30 is movably provided with a first ejector rod 26, and the first ejector rod 26 is slidably connected to the limiting plate 3. The bottom end of the first ejector rod 26 is fixedly connected to the bottom plate 4. A retaining disc 27 is fixedly connected to the outer side of the first ejector rod 26. A first spring 28 is arranged on the outer side of the first ejector rod 26, and both ends of the first spring 28 are fixedly connected to the connecting cylinder 25 and the retaining disc 27 respectively. The top end of the first ejector rod 26 is provided with a wedge-shaped surface adapted to the end surface of the guide plate 30. When the first ejector rod 26 moves upward, under the extrusion of the first ejector rod 26, the guide plate 30 can be made to separate the clamping block 32 from the chuck 33.

[0049] As a further improvement of the present invention, as Figure 2 and Figure 5 shown, one end of the chuck 33 is fixedly connected with a lever 36, and the lever 36 is slidably connected to the connecting shell 5. One end of the connecting shell 5 is fixedly connected with an ear plate 37, and the top end of the ear plate 37 is rotatably connected with a stop lever 38. When it is necessary to retract the bottom plate 4 in contact with the ground upward, the staff moves the second ejector rod 34 downward through the lever 36 and the chuck 33, so that the second ejector rod 34 does not contact the frustum 23. Then the staff pushes the frustum 23, so that the frustum 23 drives the limiting shell 22 to be re-engaged with the limiting block 12 and the second bevel gear 13 together, so that the power shaft 11 can drive the second bevel gear 13 to rotate. And when the second ejector rod 34 does not contact the frustum 23, the stop lever 38 is rotated to the top end of the lever 36, and the lever 36 is limited through the stop lever 38 to ensure that the second ejector rod 34 will not move upward. When the bottom plate 4 is completely retracted upward, at this time, under the elastic force of the first spring 28, the first ejector rod 26 will move downward to ensure that the clamping block 32 can be normally engaged with the chuck 33. Then the chuck 33 is driven to move downward through the lever 36 so that the chuck 33 is re-engaged with the clamping block 32 together.

[0050] As a further improvement of the present invention, as Figure 3 , Figure 16 and Figure 17 shown, the marking mechanism includes an iron ring 41 fixedly connected to the gearbox 39. A magnet 43 is magnetically attracted to the outside of the iron ring 41. A positioning pin 42 is fixedly connected to the outside of the magnet 43. A pointer 40 is arranged on one side of the positioning pin 42, and the pointer 40 is fixedly connected to the power shaft 11. When the staff hears the sound of the second ejector rod 34 hitting the frustum 23, the staff temporarily stops turning the crank 45. At this time, a positioning pin 42 is fixed to the outside of the iron ring 41 through the magnet 43, and at the same time, the positioning pin 42 is aligned with the pointer 40. At this time, the position where the positioning pin 42 is located indicates that the limiting block 12 at this position can be engaged with the limiting shell 22, which is convenient for subsequently re-engaging the limiting shell 22 with the limiting block 12.

[0051] As a further improvement of the present invention, as Figure 1 and Figure 3 shown, a rotating shaft 44 is movably arranged inside the gearbox 39. A first gear 46 and a second gear 47 are fixedly connected to the outside of the rotating shaft 44. A third gear 48 and a fourth gear 49 are fixedly connected to the outside of the power shaft 11. And the third gear 48 can be meshed with the second gear 47, and the first gear 46 can be meshed with the fourth gear 49. One end of the rotating shaft 44 is rotatably connected with a crank 45. By pulling the rotating shaft 44 to switch the positions of the first gear 46 and the second gear 47 back and forth, the rotation speed of the power shaft 11 can be adjusted. This part is the prior art and will not be elaborated here in detail.

[0052] Workflow: When the power shaft 11 needs to rotate, the operator rotates the first gear 46 and the second gear 47 with the crank 45. At this time, the first gear 46 and the second gear 47 drive the power shaft 11 to rotate through the third gear 48 or the fourth gear 49. Then, the power shaft 11 drives the second bevel gear 13 to rotate through the limit block 12 and the limit housing 22. Then, the second bevel gear 13 drives the screw rod 9 to rotate spirally inside the connecting plate 7 through the first bevel gear 10. At this time, the connecting plate 7 drives the inner support leg 2 to gradually move downward. Then, the inner support leg 2 drives the bottom plate 4 to move downward together through the side plate 24, the connecting cylinder 25, and the first ejector rod 26. At the same time, the connecting cylinder 25 also drives the moving frame 6 to move downward along the connecting housing 5, and the second ejector rod 34 also moves downward with the moving frame 6. At the same time, according to the actual design requirements, the length of the screw rod 9 and the maximum stroke of the second ejector rod 34 can be designed to ensure that when the inner support leg 2 moves to the maximum stroke, the third spring 35 can still drive the second ejector rod 34 to horizontally push open the frustum 23. When used on an uneven road surface, if one of the bottom plates 4 first tightly supports against the ground and the bottom plate 4 is in close contact with the limit plate 3, during the process of the bottom plate 4 being in close contact with the limit plate 3, the bottom plate 4 also drives the first ejector rod 26 to move upward. At the same time, the first ejector rod 26 also squeezes the guide plate 30, causing the guide plate 30 to drive the latch 32 to separate from the chuck 33. At this time, under the pulling force of the third spring 35, the second ejector rod 34 makes the frustum 23 move along the power shaft 11 in a direction away from the corresponding second bevel gear 13 through the wedge-shaped surface at the end until the side of the second ejector rod 34 is in close contact with the side of the limit ring 50. Through the frictional force between the second ejector rod 34, the limit ring 50, and the frustum 23, the frustum 23 and the limit housing 22 can be prevented from rotating randomly, ensuring that the limit housing 22 and the second bevel gear 13 are in an aligned position. At the same time, the frustum 23 also drives the limit housing 22 to separate from the limit block 12 and the second bevel gear 13. After the limit housing 22 and the limit block 12 are separated, when the limit block 12 rotates, it will not drive the limit housing 22 to rotate together, and the limit housing 22 will not drive the corresponding second bevel gear 13 to rotate together, thereby cutting off the power from the power shaft 11 to the second bevel gear 13, ensuring that the bottom plate 4 that has already contacted the ground will not move downward anymore, and at the same time ensuring that the other bottom plate 4 that has not contacted the ground can continue to move downward until both bottom plates 4 are in close contact with the ground, so that the device can be used on an uneven road surface, thereby improving the applicability of the device and facilitating the use of the operator without having to look for a suitable height of the cushion plate;When the second ejector rod 34 hits the frustum 23, a sound will also be emitted, reminding the staff that the bottom plate 4 is in close contact with the ground. When the staff hears the sound of the impact, the staff first stops turning the crank 45. When the staff hears the sound of the second ejector rod 34 hitting the frustum 23, the staff temporarily stops turning the crank 45. At this time, a positioning pin 42 is fixed to the outside of the iron ring 41 by a magnet 43, and at the same time, the positioning pin 42 is aligned with the pointer 40. The position where the positioning pin 42 is located at this time indicates that the limit block 12 at this position can be engaged with the limit shell 22, which is convenient for the subsequent re-engagement of the limit shell 22 with the limit block 12;

[0053] When the bottom plate 4 in contact with the ground needs to be retracted upwards, the staff first moves the second ejector rod 34 downwards through the lever 36 and the chuck 33, so that the second ejector rod 34 does not contact the frustum 23. Then, the stop lever 38 is rotated to the top of the lever 36 to limit the lever 36 through the stop lever 38 to ensure that the second ejector rod 34 will not move upwards. At this time, the bottom plate 4 is still in contact with the limit plate 3, and the first ejector rod 26 is in a state of pressing the guide plate 30, so that the latch 32 cannot be engaged with the chuck 33. Therefore, the second ejector rod 34 is first limited by the stop lever 38. Then, the power shaft 40 is rotated to align the pointer 40 with the positioning pin 42. At this time, the position of the limit block 12 can be re-engaged with the limit shell 22. Then, the staff pushes the frustum 23 to make the frustum 23 drive the limit shell 22 to be re-engaged with the limit block 12 and the second bevel gear 13. The limit shells 22 on the inner sides of the two outer legs 1 can be adjusted in the same way. The positions of the two limit shells 22 can be adjusted to be engaged with the limit blocks 12. First, the position of one of the limit shells 22 can be adjusted to make one of the bottom plates 4 rise to the same level as the other bottom plate 41, and then the position of the other limit shell 22 can be adjusted. After the adjustment is completed, when the power shaft 11 rotates, it will drive the second bevel gear 13 to rotate again through the limit block 12 and the limit shell 22. When the bottom plate 4 is completely retracted upwards, at this time, under the elastic force of the first spring 28, the first ejector rod 26 will move downwards, so that the first ejector rod 26 does not press the guide plate 30, ensuring that the latch 32 can be normally engaged with the chuck 33. Then, the chuck 33 is driven downwards through the lever 36 to make the chuck 33 re-engage with the latch 32, and then it can wait for the next use.

[0054] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present invention. Without departing from the protection scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A split support device for a new energy semi-trailer, comprising an outer support leg (1) and a power shaft (11), characterized in that: Both ends of the power shaft (11) are rotatably connected with outer support legs (1). The inner side of the outer support legs (1) is slidably connected with inner support legs (2). The bottom end of the inner support legs (2) is fixedly connected with a limit plate (3). A bottom plate (4) is arranged on the lower side of the limit plate (3). The inner side of the outer support legs (1) is fixedly connected with a fixing plate (8). The inner side of the fixing plate (8) is rotatably connected with a screw rod (9). A connecting plate (7) is helically connected to the outer side of the screw rod (9), and the connecting plate (7) is fixedly connected with the inner support legs (2). The top end of the screw rod (9) is fixedly connected with a first bevel gear (10). Power switching mechanisms are arranged at both ends of the power shaft (11). One end of the outer support legs (1) is fixedly connected with a connecting shell (5). A reminder adjustment mechanism is arranged inside the connecting shell (5). One end of one of the outer support legs (1) is fixedly connected with a gear box (39). A marking mechanism is arranged at one end of the gear box (39); The power switching mechanism includes a limit block (12) fixedly connected with the power shaft (11). The outer side of the limit block (12) is slidably connected with a limit shell (22). A frustum (23) and a limit ring (50) are fixedly connected to the outer side of the limit shell (22), and the frustum (23) is fixedly connected with the limit ring (50). A second bevel gear (13) is slidably connected to the outer side of the limit shell (22), and the second bevel gear (13) meshes with the first bevel gear (10). A first fixing component is arranged at one end of the second bevel gear (13). A second fixing component is arranged on the outer side of the limit shell (22).

2. The split support device for a new energy semi-trailer according to claim 1, wherein: The first fixing component includes a first bearing (14) fixedly connected with the second bevel gear (13). A first rotating ring (15) is fixedly connected to the outer side of the first bearing (14). A first connecting rod (16) is fixedly connected to the top end of the first rotating ring (15), and the first connecting rod (16) is fixedly connected with the outer support leg (1).

3. The split support device for a new energy semi-trailer according to claim 1, wherein: The second fixing component includes a second bearing (21) fixedly connected with the limit shell (22). A second rotating ring (20) is fixedly connected to the outer side of the second bearing (21). A third connecting rod (18) is fixedly connected to the top end of the second rotating ring (20). A guiding shaft (19) is slidably connected to the inner side of the third connecting rod (18). One end of the guiding shaft (19) is fixedly connected with a second connecting rod (17), and the second connecting rod (17) is fixedly connected with the outer support leg (1).

4. The split support device for a new energy semi-trailer according to claim 1, characterized in that: The reminder adjustment mechanism includes a side plate (24) fixedly connected to the inner leg (2). One end of the side plate (24) is fixedly connected to a connecting cylinder (25). The top end of the connecting cylinder (25) is fixedly connected to a moving frame (6), and the moving frame (6) is slidably connected to the connecting shell (5). A second ejector rod (34) is slidably connected to the inner side of the top end of the moving frame (6), and the top end of the second ejector rod (34) is provided with a wedge-shaped surface. The bottom end of the second ejector rod (34) is fixedly connected to a chuck (33). One end of the chuck (33) is engaged with a buckle assembly. A third spring (35) is arranged outside the second ejector rod (34), and both ends of the third spring (35) are fixedly connected to the moving frame (6) and the chuck (33) respectively.

5. The split support device for a new energy semi-trailer according to claim 4, characterized in that: The buckle assembly includes a vertical plate (29) fixedly connected to the moving frame (6). A clamping block (32) is slidably connected to the inner side of the vertical plate (29), and the clamping block (32) is engaged with the chuck (33). One end of the clamping block (32) is fixedly connected to a guide plate (30), and the guide plate (30) is slidably connected to the vertical plate (29). One end of the guide plate (30) is fixedly connected to a second spring (31), and the other end of the second spring (31) is fixedly connected to the vertical plate (29).

6. The split support device for a new energy semi-trailer according to claim 5, wherein: One end of the guide plate (30) is movably provided with a first ejector rod (26), and the first ejector rod (26) is slidably connected to the limiting plate (3). The bottom end of the first ejector rod (26) is fixedly connected to the bottom plate (4). A stop disk (27) is fixedly connected to the outside of the first ejector rod (26). A first spring (28) is arranged outside the first ejector rod (26), and both ends of the first spring (28) are fixedly connected to the connecting cylinder (25) and the stop disk (27) respectively.

7. The split support device for a new energy semi-trailer according to claim 4, characterized in that: One end of the chuck (33) is fixedly connected to a lever (36), and the lever (36) is slidably connected to the connecting shell (5). One end of the connecting shell (5) is fixedly connected to an ear plate (37). The top end of the ear plate (37) is rotatably connected to a stop rod (38).

8. The split support device for a new energy semi-trailer according to claim 1, characterized in that: The marking mechanism includes an iron ring (41) fixedly connected to the gear box (39). A magnet (43) is magnetically attracted to the outside of the iron ring (41). A positioning pin (42) is fixedly connected to the outside of the magnet (43). A pointer (40) is arranged on one side of the positioning pin (42), and the pointer (40) is fixedly connected to the power shaft (11).

9. The split support device for a new energy semi-trailer according to claim 1, characterized in that: A rotating shaft (44) is movably arranged inside the gear box (39). A first gear (46) and a second gear (47) are fixedly connected to the outside of the rotating shaft (44). A third gear (48) and a fourth gear (49) are fixedly connected to the outside of the power shaft (11), and the third gear (48) can be engaged with the second gear (47). The first gear (46) can be engaged with the fourth gear (49). One end of the rotating shaft (44) is rotatably connected to a crank (45).

Images