Rear wheel steering adjusting mechanism and vehicle
By designing a rear wheel steering adjustment mechanism, the angle of the turntable is adjusted by controlling the angle of the steering column with an adjustable length, which solves the problem that the rear wheel steering angle of the vehicle cannot be adjusted, and realizes dynamic adjustment of the rear wheel steering angle and simplifies operation.
Patent Information
- Application Number
- CN202520500367.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In the existing technology, the rear-wheel steering system of commercially available vehicles lacks adjustment function or is complicated to operate, resulting in the inability to dynamically adjust the rear-wheel steering angle, which affects the vehicle's flexibility and adaptability to different scenarios.
Design a rear wheel steering adjustment mechanism, which is set to hinge the pivot shaft to the middle of the angle adjustment plate, and set the first and second steering adjustment columns with adjustable lengths on both sides of the pivot support in the middle. Control the angle between the angle adjustment plate and the rear fork shaft, thereby driving the adjustment of the angle of the rear wheel support and the hinge link, so as to realize the flexible adjustment of the rear wheel steering angle.
It enables dynamic adjustment of the rear wheel steering angle after the vehicle assembly is completed, improving the flexibility and adaptability of the vehicle's steering angle adjustment and simplifying the operation process.
Smart Images
Figure CN223764631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicles, in particular to a rear wheel steering adjusting mechanism and a vehicle. BACKGROUND
[0002] The rear wheel steering system of the current commercial vehicle generally lacks adjustment function or has high operation complexity. Taking an electric pedal tricycle as an example, the rear wheel steering angle of the vehicle is in a fixed state after the vehicle is assembled, and the rear wheel steering angle cannot be dynamically adjusted according to the assembly condition, and there is also a lack of necessary mechanical adjusting interface, which directly affects the angle adjusting flexibility and scene adaptability of the rear wheel steering angle of the vehicle. CONTENT OF THE UTILITY MODEL
[0003] The embodiment of the present application provides a rear wheel steering adjusting mechanism and a vehicle, which can solve the technical problem that the rear wheel steering angle of the vehicle on the market cannot be adjusted after the vehicle is assembled into a whole vehicle.
[0004] The embodiment of the present application provides a rear wheel steering adjusting mechanism, which comprises a rear fork shaft, a first rear wheel support, a second rear wheel support, a middle fulcrum support, an angle adjusting rotating plate, a fulcrum rotating shaft, a first hinged connecting rod, a second hinged connecting rod, a first steering adjusting column and a second steering adjusting column.
[0005] Both ends of the rear fork shaft are provided with external threads, the end of the first rear wheel support is provided with a first through hole, the end of the second rear wheel support is provided with a second through hole, both ends of the rear fork shaft pass through the first through hole and the second through hole respectively and are sleeved with elastic buffer sleeves, both ends of the rear fork shaft are threadedly connected with nuts, the nuts press the elastic buffer sleeves in the first through hole and the second through hole, the middle part of the rear fork shaft is connected to the first end of the middle fulcrum support, and the middle fulcrum support, the first rear wheel support and the second rear wheel support are located on the same side of the rear fork shaft.
[0006] The second end of the middle fulcrum support is hingedly connected to the middle of the angle adjustment turn plate through the fulcrum pivot, one side of the angle adjustment turn plate is provided with an angle adjustment surface, one end of the first hinged connecting rod is hingedly connected to the middle of the first rear wheel support, the other end of the first hinged connecting rod is hingedly connected to the side of the angle adjustment turn plate adjacent to the first rear wheel support, one end of the second hinged connecting rod is hingedly connected to the middle of the second rear wheel support, the other end of the second hinged connecting rod is hingedly connected to the side of the angle adjustment turn plate adjacent to the second rear wheel support, the first steering adjustment column and the second steering adjustment column are respectively adjustably connected to the second end of the middle fulcrum support, the first steering adjustment column and the second steering adjustment column are respectively located on both sides of the fulcrum pivot, the first steering adjustment column and the second steering adjustment column respectively abut against the angle adjustment surface, the angle of the angle adjustment turn plate relative to the rear fork shaft is controlled by adjusting the length of the first steering adjustment column and the second steering adjustment column, thereby adjusting the angle of the first rear wheel support and the first hinged connecting rod and adjusting the angle of the second rear wheel support and the second hinged connecting rod.
[0007] Further, the second end of the middle fulcrum support is provided with a first threaded hole and a second threaded hole on both sides corresponding to the fulcrum pivot, the first steering adjustment column is threadedly connected into the first threaded hole, and the second steering adjustment column is threadedly connected into the second threaded hole.
[0008] Further, the first steering adjustment column and the second steering adjustment column each include a fastener.
[0009] Further, the angle adjustment surface includes a first inclined surface and a second inclined surface on both sides of the fulcrum pivot, the first steering adjustment column abuts against the first inclined surface, and the second steering adjustment column abuts against the second inclined surface.
[0010] Further, the first end of the middle fulcrum support is provided with a connecting through hole, and the middle of the rear fork shaft is fixedly connected into the connecting through hole.
[0011] Further, the angle adjustment turn plate includes an upper connecting plate, a lower connecting plate and a middle connecting plate, the upper connecting plate and the lower connecting plate are arranged in parallel, the lower connecting plate is provided with the angle adjustment surface, the upper connecting plate and the lower connecting plate are connected in the middle on one side toward the angle adjustment surface and are provided with the fulcrum pivot, the second end of the middle fulcrum support is provided with a hinged plate protruding, the hinged plate is provided with a rotating through hole, the hinged plate extends into between the upper connecting plate and the lower connecting plate, and the fulcrum pivot is rotatably connected with the hinged plate through the rotating through hole.
[0012] Further, the angle adjustment turn plate further comprises a first rotating shaft and a second rotating shaft, the upper connecting plate and the lower connecting plate are connected with the first rotating shaft on the side facing the first rear wheel support, the other end of the first hinged connecting rod is provided with a first hinged through hole, the other end of the first hinged connecting rod extends into the upper connecting plate and the lower connecting plate, the first rotating shaft is rotatably connected with the first hinged connecting rod through the first hinged through hole, the upper connecting plate and the lower connecting plate are connected with the second rotating shaft on the side facing the second rear wheel support, the other end of the second hinged connecting rod is provided with a second hinged through hole, the other end of the second hinged connecting rod extends into the upper connecting plate and the lower connecting plate, and the second rotating shaft is rotatably connected with the second hinged connecting rod through the second hinged through hole.
[0013] Further, the rear wheel steering adjustment mechanism further comprises a first rear wheel and a second rear wheel, the first rear wheel is connected to one end of the first rear wheel support away from the rear fork shaft, the second rear wheel is connected to one end of the second rear wheel support away from the rear fork shaft, and the angle adjustment turn plate is located between the first rear wheel and the second rear wheel.
[0014] Further, the rear wheel steering adjustment mechanism further comprises a buffer support and an elastic buffer device, the buffer support is connected to the upper surface of the middle fulcrum support, the bottom of the elastic buffer device is connected to the buffer support, and the top of the elastic buffer device is connected to the vehicle body.
[0015] The embodiment of the present application also provides a vehicle comprising the rear wheel steering adjustment mechanism.
[0016] The rear wheel steering adjustment mechanism and the vehicle provided by the embodiment of the present application have the advantages that the middle fulcrum support is hinged to the middle part of the angle adjustment turn plate through the fulcrum rotating shaft, the first steering adjustment column and the second steering adjustment column with adjustable lengths are arranged on the two sides of the fulcrum rotating shaft to support the angle adjustment surface of the angle adjustment turn plate facing the middle fulcrum support, the included angle of the angle adjustment turn plate relative to the rear fork shaft is controlled, the angles of the first rear wheel support and the first hinged connecting rod are adjusted, and the angles of the second rear wheel support and the second hinged connecting rod are adjusted, so that the included angles of the first rear wheel support and the second rear wheel support relative to the rear fork shaft are adjusted to control the steering angles of the rear wheels arranged on the first rear wheel support and the second rear wheel support. BRIEF DESCRIPTION OF DRAWINGS
[0017] The technical scheme and other beneficial effects of the present application will be apparent through the following detailed description of the specific embodiments of the present application combined with the drawings.
[0018] Figure 1 A structural schematic diagram of the rear wheel steering adjustment mechanism provided by the embodiment of the present application is shown.
[0019] Figure 2 Part structure diagram of rear wheel steering adjusting mechanism provided by the embodiment of the present application.
[0020] Figure 3 Part structure diagram of rear wheel steering adjusting mechanism provided by the embodiment of the present application. Figure 2 Part structure exploded view of rear wheel steering adjusting mechanism provided by the embodiment of the present application.
[0021] Figure 4 Part structure cross-sectional view of rear wheel steering adjusting mechanism provided by the embodiment of the present application.
[0022] Figure 5 Structure diagram of angle adjusting rotating plate connecting fulcrum rotating shaft provided by the embodiment of the present application.
[0023] Figure 6 Part structure diagram of steering adjusting mechanism of rear wheel steering adjusting mechanism provided by the embodiment of the present application.
[0024] The identification in the figure is as follows:
[0025] Rear fork shaft 1, first rear wheel support 2, first through hole 21, second rear wheel support 3, second through hole 31, middle fulcrum support 4, first threaded hole 41, second threaded hole 42, hinged plate 43, rotating through hole 431, angle adjusting rotating plate 5, angle adjusting surface 51, first inclined surface 511, second inclined surface 512, upper connecting plate 52, lower connecting plate 53, middle connecting plate 54, first rotating shaft 55, second rotating shaft 56, fulcrum rotating shaft 6, first hinged connecting rod 7, second hinged connecting rod 8, first steering adjusting column 9, second steering adjusting column 10, nut 11, first rear wheel 12, second rear wheel 13, buffer support 14, elastic buffer device 15, elastic buffer sleeve 16. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0027] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0028] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0029] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the embodiment of the present application provides a rear wheel steering adjusting mechanism, a rear wheel steering adjusting mechanism, comprising a rear fork shaft 1, a first rear wheel support 2, a second rear wheel support 3, a middle support point support 4, an angle adjusting rotating plate 5, a support point rotating shaft 6, a first hinged connecting rod 7, a second hinged connecting rod 8, a first steering adjusting column 9 and a second steering adjusting column 10.
[0030] Both ends of the rear fork shaft 1 are provided with external threads, the end of the first rear wheel support 2 is provided with a first through hole 21, the end of the second rear wheel support 3 is provided with a second through hole 31, both ends of the rear fork shaft 1 pass through the first through hole 21 and the second through hole 31 respectively and are sleeved with elastic buffer sleeves 16, both ends of the rear fork shaft 1 are threadedly connected with nuts 11, the nuts 11 press the elastic buffer sleeves 16 in the first through hole 21 and the second through hole 31, the middle part of the rear fork shaft 1 is connected to the first end of the middle support point support 4, specifically, the first end of the middle support point support 4 is provided with a connecting through hole, and the middle part of the rear fork shaft 1 is fixedly connected into the connecting through hole. The middle support point support 4, the first rear wheel support 2 and the second rear wheel support 3 are located on the same side of the rear fork shaft 1.
[0031] The second end of the middle fulcrum support 4 is hinged to the middle of the angle adjusting turn plate 5 through the fulcrum pivot 6, the angle adjusting turn plate 5 is provided with an angle adjusting surface 51 on the side facing the middle fulcrum support 4, one end of the first hinged connecting rod 7 is hinged to the middle of the first rear wheel support 2, the other end of the first hinged connecting rod 7 is hinged to the side of the angle adjusting turn plate 5 adjacent to the first rear wheel support 2, one end of the second hinged connecting rod 8 is hinged to the middle of the second rear wheel support 3, the other end of the second hinged connecting rod 8 is hinged to the side of the angle adjusting turn plate 5 adjacent to the second rear wheel support 3, the first steering adjusting column 9 and the second steering adjusting column 10 are respectively adjustably connected to the second end of the middle fulcrum support 4, the first steering adjusting column 9 and the second steering adjusting column 10 are respectively located on both sides of the fulcrum pivot 6, the first steering adjusting column 9 and the second steering adjusting column 10 respectively abut against the angle adjusting surface 51, the length of the first steering adjusting column 9 and the second steering adjusting column 10 is adjusted to control the included angle of the angle adjusting turn plate 5 relative to the rear fork shaft 1, thereby adjusting the angle of the first rear wheel support 2 and the first hinged connecting rod 7 and adjusting the angle of the second rear wheel support 3 and the second hinged connecting rod 8.
[0032] The application sets the middle fulcrum support 4 hinged to the middle of the angle adjusting turn plate 5 through the fulcrum pivot 6, the first steering adjusting column 9 and the second steering adjusting column 10 with adjustable length are arranged on both sides of the middle fulcrum support 4 to support the angle adjusting surface 51 of the angle adjusting turn plate 5 facing the middle fulcrum support 4, thereby realizing the control of the included angle of the angle adjusting turn plate 5 relative to the rear fork shaft 1, adjusting the angle of the first rear wheel support 2 and the first hinged connecting rod 7 and adjusting the angle of the second rear wheel support 3 and the second hinged connecting rod 8, which can adjust the included angle of the first rear wheel support 2 and the second rear wheel support 3 relative to the rear fork shaft 1 to control the steering angle of the rear wheels arranged on the first rear wheel support 2 and the second rear wheel support 3.
[0033] It can be understood that the rear fork shaft 1 is connected with the middle fulcrum support 4, and both ends of the rear fork shaft 1 are connected with the end portions of the first rear wheel support 2 and the second rear wheel support 3, so that the rear fork shaft 1, the middle fulcrum support 4, the first rear wheel support 2 and the second rear wheel support 3 are located in a first plane, and both sides of the angle adjusting turn plate 5 are hinged to the middle portions of the first rear wheel support 2 and the second rear wheel support 3 through the first hinged connecting rod 7 and the second hinged connecting rod 8, respectively, which can adjust and control the steering angle of the rear wheels arranged on the first rear wheel support 2 and the second rear wheel support 3 by adjusting the distance between the angle adjusting turn plate 5 and the first rear wheel support 2 and the second rear wheel support 3.
[0034] In order to realize the structural stability, the second end of the middle fulcrum support 4 is hinged to the middle of the angle adjusting turn plate 5 through the fulcrum rotating shaft 6, so that the first hinged connecting rod 7, the second hinged connecting rod 8 and the angle adjusting turn plate 5 are also located in the first plane, and the middle fulcrum support 4 and the angle adjusting turn plate 5 are not separated from each other.
[0035] In order to facilitate the adjustment of the steering angle of the rear wheels on the first rear wheel support 2 and the second rear wheel support 3, the first steering adjusting column 9 and the second steering adjusting column 10 are respectively located on both sides of the fulcrum rotating shaft 6, and the first steering adjusting column 9 and the second steering adjusting column 10 respectively abut against the angle adjusting surface 51. By adjusting the length of the first steering adjusting column 9 and the length of the second steering adjusting column 10, the included angle of the angle adjusting turn plate 5 relative to the middle fulcrum support 4 can be controlled. When adjusting the included angle, the length of the first steering adjusting column 9 needs to be increased while the length of the second steering adjusting column 10 needs to be reduced, and the length of the first steering adjusting column 9 needs to be reduced while the length of the second steering adjusting column 10 needs to be increased.
[0036] As shown in Figure 3 , Figure 4 , the second end of the middle fulcrum support 4 is provided with a first threaded hole 41 and a second threaded hole 42 corresponding to both sides of the fulcrum rotating shaft 6, the first steering adjusting column 9 is screw-connected into the first threaded hole 41, and the second steering adjusting column 10 is screw-connected into the second threaded hole 42. By screw connection, the length of the first steering adjusting column 9 and the length of the second steering adjusting column 10 can be conveniently adjusted.
[0037] Further, the first steering adjusting column 9 and the second steering adjusting column 10 each include a fastener. The fastener is preferably a stud, a bolt or a screw. By adjusting the depth of the teeth of the first steering adjusting column 9 and the second steering adjusting column 10, the user can adjust them at any time according to different scenes or their own needs, and the adjustment is relatively convenient and fast.
[0038] As shown in Figure 5 , Figure 6As shown, the angle adjustment surface 51 includes a first inclined surface 511 and a second inclined surface 512 on both sides of the fulcrum rotating shaft 6, the first steering adjustment column 9 abuts against the first inclined surface 511, and the second steering adjustment column 10 abuts against the second inclined surface 512. The first inclined surface 511 and the second inclined surface 512 are obtuse angles, and the obtuse angle ranges from 120 degrees to 179 degrees. By adjusting the length of the first steering adjustment column 9 and the length of the second steering adjustment column 10, the rotation of the angle adjustment rotating plate 5 along the fulcrum rotating shaft 6 equivalent to the rotation of the middle fulcrum support 4 can be effectively controlled, and the hinge driving mode can be used to control the included angle between the first rear wheel support 2 and the second rear wheel support 3 relative to the rear fork shaft 1.
[0039] As shown in Figure 4 In order to prevent the end of the rear fork shaft 1 from being worn by the outer threads of the first through hole 21 and the second through hole 31, and to maintain the variable included angle between the first rear wheel support 2 and the second rear wheel support 3 relative to the rear fork shaft 1, a resilient buffer sleeve 16 is further provided at the end of the rear fork shaft 1. The resilient buffer sleeve 16 can adapt to the adjusted angle change by deforming when the angle is adjusted by adjusting the depth of the teeth of the first steering adjustment column 9 and the second steering adjustment column 10.
[0040] As shown in Figure 5 , Figure 6 The angle adjustment rotating plate 5 includes an upper connecting plate 52, a lower connecting plate 53, and a middle connecting plate 54. The upper connecting plate 52 and the lower connecting plate 53 are arranged in parallel, the lower connecting plate 53 is provided with the angle adjustment surface 51, the upper connecting plate 52 and the lower connecting plate 53 are connected in the middle on the side facing the angle adjustment surface 51, the second end of the middle fulcrum support 4 is provided with a hinge plate 43, the hinge plate 43 is provided with a rotating through hole 431, the hinge plate 43 extends into the upper connecting plate 52 and the lower connecting plate 53, and the fulcrum rotating shaft 6 is rotatably connected with the hinge plate 43 through the rotating through hole 431.
[0041] As shown in Figure 5 , Figure 6As shown in the figure, the angle adjustment turn plate 5 further comprises a first rotating shaft 55 and a second rotating shaft 56, the upper connecting plate 52 and the lower connecting plate 53 are connected with the first rotating shaft 55 at the side facing the first rear wheel support 2, the other end of the first hinged connecting rod 7 is provided with a first hinged through hole, the other end of the first hinged connecting rod 7 extends into the space between the upper connecting plate 52 and the lower connecting plate 53, the first rotating shaft 55 is rotatably connected with the first hinged connecting rod 7 through the first hinged through hole, the upper connecting plate 52 and the lower connecting plate 53 are connected with the second rotating shaft 56 at the side facing the second rear wheel support 3, the other end of the second hinged connecting rod 8 is provided with a second hinged through hole, the other end of the second hinged connecting rod 8 extends into the space between the upper connecting plate 52 and the lower connecting plate 53, and the second rotating shaft 56 is rotatably connected with the second hinged connecting rod 8 through the second hinged through hole.
[0042] As shown in the figure, Figure 1 the rear wheel steering adjustment mechanism further comprises a first rear wheel 12 and a second rear wheel 13, the first rear wheel 12 is connected to the end of the first rear wheel support 2 away from the rear fork shaft 1, the second rear wheel 13 is connected to the end of the second rear wheel support 3 away from the rear fork shaft 1, and the angle adjustment turn plate 5 is located between the first rear wheel 12 and the second rear wheel 13.
[0043] As shown in the figure, Figure 1 the rear wheel steering adjustment mechanism further comprises a buffer support 14 and an elastic buffer device 15, the buffer support 14 is connected to the upper surface of the middle fulcrum support 4, the bottom of the elastic buffer device 15 is connected to the buffer support 14, and the top of the elastic buffer device 15 is connected to the vehicle body. In this way, the vehicle body structure is compact and has a buffering effect, and can effectively support the bottom of the vehicle body.
[0044] The embodiment of the present application further provides a vehicle comprising the rear wheel steering adjustment mechanism described above.
[0045] Preferably, the vehicle comprises an electric pedal tricycle.
[0046] The rear wheel steering adjusting mechanism and the vehicle provided by the embodiments of the present application are characterized in that: a middle fulcrum support is hinged to a middle part of an angle adjusting turn plate through a fulcrum rotating shaft, a first steering adjusting column and a second steering adjusting column capable of adjusting length are arranged on both sides of the fulcrum rotating shaft to support an angle adjusting surface of the angle adjusting turn plate towards the middle fulcrum support, the angle adjusting turn plate is controlled to adjust the included angle with the rear fork shaft, the angle of the first rear wheel support and the first hinged connecting rod is adjusted, and the angle of the second rear wheel support and the second hinged connecting rod is adjusted, so that the included angle of the first rear wheel support and the second rear wheel support with the rear fork shaft is adjusted to control the steering angle of the rear wheels arranged on the first rear wheel support and the second rear wheel support, and the steering angle of the rear wheels is adjusted after the whole vehicle is assembled, and the adaptability is high.
[0047] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.
[0048] The rear wheel steering adjusting mechanism and the vehicle provided by the embodiments of the present application are characterized in that: a middle fulcrum support is hinged to a middle part of an angle adjusting turn plate through a fulcrum rotating shaft, a first steering adjusting column and a second steering adjusting column capable of adjusting length are arranged on both sides of the fulcrum rotating shaft to support an angle adjusting surface of the angle adjusting turn plate towards the middle fulcrum support, the angle adjusting turn plate is controlled to adjust the included angle with the rear fork shaft, the angle of the first rear wheel support and the first hinged connecting rod is adjusted, and the angle of the second rear wheel support and the second hinged connecting rod is adjusted, so that the included angle of the first rear wheel support and the second rear wheel support with the rear fork shaft is adjusted to control the steering angle of the rear wheels arranged on the first rear wheel support and the second rear wheel support, and the steering angle of the rear wheels is adjusted after the whole vehicle is assembled, and the adaptability is high.
Claims
1. A rear wheel steering adjustment mechanism characterized by, The utility model relates to a rear fork axle, first rear wheel support, second rear wheel support, middle fulcrum support, angle adjusting rotary plate, fulcrum pivot, first articulated connecting rod, second articulated connecting rod, first steering adjusting column and second steering adjusting column are provided. Both ends of the rear fork axle are provided with external threads, the end of the first rear wheel support is provided with a first through hole, the end of the second rear wheel support is provided with a second through hole, both ends of the rear fork axle pass through the first through hole and the second through hole respectively and are sleeved with elastic buffer sleeves, both ends of the rear fork axle are threadedly connected with nuts, the nuts press the elastic buffer sleeves in the first through hole and the second through hole, the middle part of the rear fork axle is connected to the first end of the middle fulcrum support, the middle fulcrum support, the first rear wheel support and the second rear wheel support are located on the same side of the rear fork axle. The second end of the middle fulcrum support is hingedly connected to the middle part of the angle adjusting rotary plate through the fulcrum pivot, one side of the angle adjusting rotary plate towards the middle fulcrum support is provided with an angle adjusting surface, one end of the first articulated connecting rod is hingedly connected to the middle part of the first rear wheel support, the other end of the first articulated connecting rod is hingedly connected to the side of the angle adjusting rotary plate adjacent to the first rear wheel support, one end of the second articulated connecting rod is hingedly connected to the middle part of the second rear wheel support, the other end of the second articulated connecting rod is hingedly connected to the side of the angle adjusting rotary plate adjacent to the second rear wheel support, the first steering adjusting column and the second steering adjusting column are respectively adjustably connected to the second end of the middle fulcrum support, the first steering adjusting column and the second steering adjusting column are respectively located on both sides of the fulcrum pivot, the first steering adjusting column and the second steering adjusting column respectively abut against the angle adjusting surface, the angle of the angle adjusting rotary plate relative to the rear fork axle is controlled by adjusting the length of the first steering adjusting column and the second steering adjusting column, thereby adjusting the angle of the first rear wheel support and the first articulated connecting rod and adjusting the angle of the second rear wheel support and the second articulated connecting rod. The second end of the middle fulcrum support is provided with a first threaded hole and a second threaded hole corresponding to both sides of the fulcrum pivot, the first steering adjusting column is threadedly connected into the first threaded hole, and the second steering adjusting column is threadedly connected into the second threaded hole.
2. The rear wheel steering adjustment mechanism of claim 1, wherein The first steering adjusting column and the second steering adjusting column each include a fastener.
3. The rear wheel steering adjustment mechanism of claim 2, wherein The angle adjusting surface includes a first inclined surface and a second inclined surface corresponding to both sides of the fulcrum pivot, the first steering adjusting column abuts against the first inclined surface, and the second steering adjusting column abuts against the second inclined surface.
4. The rear wheel steering adjustment mechanism of claim 1, wherein The first end of the middle fulcrum support is provided with a connecting through hole, and the middle part of the rear fork axle is fixedly connected into the connecting through hole.
5. The rear wheel steering adjustment mechanism of claim 1, wherein 6. The rear wheel steering adjustment mechanism of claim 1, wherein, The angle adjustment turn plate comprises an upper connecting plate, a lower connecting plate and a middle connecting plate, the upper connecting plate and the lower connecting plate are arranged in parallel, the lower connecting plate is provided with the angle adjustment surface, the upper connecting plate and the lower connecting plate are connected with the fulcrum rotating shaft at the middle part on the side towards the angle adjustment surface, the second end of the middle part fulcrum support is provided with a hinged plate, the hinged plate is provided with a rotating through hole, the hinged plate extends into the upper connecting plate and the lower connecting plate, and the fulcrum rotating shaft is rotatably connected with the hinged plate through the rotating through hole.
7. The rear wheel steering adjustment mechanism of claim 6, wherein, The angle adjustment turn plate further comprises a first rotating shaft and a second rotating shaft, the upper connecting plate and the lower connecting plate are connected with the first rotating shaft at the side towards the first rear wheel support, the other end of the first hinged connecting rod is provided with a first hinged through hole, the other end of the first hinged connecting rod extends into the upper connecting plate and the lower connecting plate, and the first rotating shaft is rotatably connected with the first hinged connecting rod through the first hinged through hole, the upper connecting plate and the lower connecting plate are connected with the second rotating shaft at the side towards the second rear wheel support, the other end of the second hinged connecting rod is provided with a second hinged through hole, the other end of the second hinged connecting rod extends into the upper connecting plate and the lower connecting plate, and the second rotating shaft is rotatably connected with the second hinged connecting rod through the second hinged through hole.
8. The rear wheel steering adjustment mechanism of claim 1, wherein The rear wheel steering adjustment mechanism further comprises a first rear wheel and a second rear wheel, the first rear wheel is connected to the first rear wheel support away from one end of the rear fork shaft, the second rear wheel is connected to the second rear wheel support away from one end of the rear fork shaft, and the angle adjustment turn plate is located between the first rear wheel and the second rear wheel.
9. The rear wheel steering adjustment mechanism of claim 1, wherein, The rear wheel steering adjustment mechanism further comprises a buffer support and an elastic buffer device, the buffer support is connected to the upper surface of the middle part fulcrum support, the bottom of the elastic buffer device is connected to the buffer support, and the top of the elastic buffer device is connected to the vehicle body.
10. A vehicle characterized by comprising: The rear wheel steering adjustment mechanism comprises any one of claims 1 to 9. The rear wheel steering adjustment mechanism comprises any one of claims 1 to 9.