Steering trapezoidal mechanism of vehicle

Abstract

The invention relates to the technical field of steering systems of vehicles, in particular to a steering trapezoidal mechanism of a vehicle. The steering trapezoidal mechanism comprises a steering knuckle which is arranged at the end of an axle in a swinging mode and used for installing a steering wheel; the trapezoidal arm is inclined to the axle, and one end of the trapezoidal arm is connected with the steering knuckle; the steering tie rod is hinged with one end, deviating from the steering knuckle, of the trapezoidal arm; wherein the trapezoidal arms are arranged at the two ends of the steering tie rod respectively, and the steering tie rod is connected with the axle through the steering knuckles to form a connecting rod mechanism; an adjusting assembly is arranged at the joint of the trapezoidal arm and the steering knuckle and used for adjusting the relative position of the steering tie rod and the axle. According to the invention, the size parameters of the steering trapezoidal mechanism can be freely adjusted through the adjusting assembly, so that the practical effects of the steering trapezoidal mechanism under various size parameters can be conveniently verified by using one set of steering trapezoidal mechanism, the experiment progress can be accelerated, and the manufacturing cost can be saved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle steering systems, in particular to a vehicle steering trapezoidal mechanism. Background Art

[0002] The steering trapezoidal mechanism is an important part of the vehicle steering system. When the vehicle turns during driving, the steering trapezoidal mechanism can make the wheels at both ends of the axle deflect at a fixed angle relationship to ensure that the two steering wheels make circular motions with different turning radii during the vehicle steering process, so that the tires are in rolling contact with the ground, reducing tire wear and improving the vehicle's steering performance.

[0003] In the prior art, the geometrical dimension parameters of the steering trapezoidal mechanism are usually designed by computer simulation. In order to verify the effect of the parameters designed by simulation in actual use, it is often necessary to produce multiple sets of steering trapezoidal mechanisms with different dimension parameters in the vehicle installation verification link, which consumes a lot of costs. Moreover, during the experiment, each replacement of a set of trapezoidal mechanisms requires an assembly and disassembly operation, which greatly delays the progress of the experiment. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a vehicle steering trapezoidal mechanism to achieve the purpose of adjustable geometric dimension parameters of the steering trapezoidal mechanism, saving manufacturing costs and accelerating experimental progress.

[0005] The present invention provides a steering trapezoidal structure for a vehicle, wherein the steering trapezoidal structure comprises: A steering knuckle is swingably disposed at the end of the axle and is used to mount the steering wheel; A trapezoidal arm, arranged obliquely to the axle and connected to the steering knuckle at one end; A steering tie rod, hinged to an end of the trapezoidal arm away from the steering knuckle; Wherein, the two ends of the steering tie rod are respectively provided with the trapezoidal arms and connected with the axle through the steering knuckle to form a connecting rod mechanism; An adjusting assembly is provided at the connection between the trapezoidal arm and the steering knuckle, which is used to adjust the relative position of the steering tie rod and the axle.

[0006] According to a vehicle steering trapezoidal mechanism provided by the present invention, the trapezoidal arm comprises an arm bracket provided with a guide groove, and the adjustment assembly is embedded in the guide groove; The guide groove vertically passes through the vertical side surface of the arm bracket and extends along the length direction of the arm bracket, and the length of the guide groove is at least greater than one third of the length of the arm bracket; One end of the adjusting component is connected to the steering knuckle, and the other end of the adjusting component is embedded in the guide groove for adjusting the relative position with the guide groove.

[0007] According to a vehicle steering trapezoidal mechanism provided by the present invention, the adjustment assembly comprises: a mounting block, embedded in the guide groove and having a gap with the side wall of the guide groove; An adjustment plate, cushioned in the gap between the mounting block and the guide groove; Wherein, the number of the adjustment plates on both sides of the mounting block in the same direction is changed to adjust the relative position of the arm bracket and the adjustment assembly.

[0008] According to a vehicle steering trapezoidal mechanism provided by the present invention, a tapered hole is provided at the other end of the arm bracket opposite to the guide groove, and the central axis of the tapered hole is perpendicular to the direction in which the guide groove penetrates the arm bracket; The hinge installed on the end of the steering tie rod is arranged to coincide with the central axis of the tapered hole.

[0009] According to a vehicle steering trapezoidal mechanism provided by the present invention, the hinge is provided with a tapered pin rod and a threaded pin rod rotatably connected by a spherical end head; The tapered pin rod extends in a vertical direction and is arranged to coincide with the central axis of the tapered hole, and the threaded pin rod extends in a horizontal direction and coincides with the central axis of the steering tie rod.

[0010] According to a vehicle steering trapezoidal mechanism provided by the present invention, both ends of the steering tie rod are respectively provided with internal thread structures, the two internal thread structures have opposite rotation directions, and the threaded pin rod is provided with an external thread structure corresponding to the rotation direction of the internal thread structure.

[0011] According to a steering trapezoidal mechanism of a vehicle provided by the present invention, a locking groove is provided at the end of the steering tie rod, and the locking groove extends from the end surface to the middle along the axial direction of the steering tie rod, and separates the end of the steering tie rod into two parts that are compressed and closed and can return to their original positions, so as to make the diameter of the end of the steering tie rod variable.

[0012] A vehicle steering trapezoidal mechanism provided by the present invention further comprises a clamp sleeved on the outer periphery of the steering tie rod, which is used to clamp and squeeze the end of the steering tie rod to fasten the hinge to the steering tie rod.

[0013] According to a steering trapezoidal mechanism of a vehicle provided by the present invention, the adjustment plate includes front and rear adjustment plates, and the front and rear adjustment plates are respectively arranged in the gaps between the end surfaces at both ends of the arm bracket and the side walls of the guide groove, so as to adjust the relative positions of the arm bracket and the adjustment assembly in the length direction of the arm bracket.

[0014] According to a vehicle steering trapezoidal mechanism provided by the present invention, a fastening threaded hole is provided on the arm bracket, and the fastening threaded hole passes through from the end surface of the arm bracket to the guide groove along the length direction of the arm bracket, and a bolt can be installed to tighten the front and rear adjustment plates.

[0015] The above-mentioned one or more technical solutions in the present invention have at least one of the following technical effects: the steering trapezoidal mechanism can freely adjust its own dimensional parameters by adjusting the components, so that a set of steering trapezoidal mechanisms can be used to conveniently verify the effect of the steering trapezoidal mechanism under various dimensional parameters in actual use, which can not only speed up the progress of the verification experiment, but also save the production cost.

[0016] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted, and the advantages brought about by the technical features of these technical solutions described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a steering trapezoidal mechanism of a vehicle provided in an embodiment of the present invention.

[0019] Figure 2 A schematic structural diagram of a trapezoidal arm connected to a steering tie rod provided in an embodiment of the present invention.

[0020] Figure 3 A schematic structural diagram of a trapezoidal arm provided in an embodiment of the present invention connected to a steering tie rod via a hinge.

[0021] Figure 4 A schematic diagram of the exploded structure of a trapezoidal arm provided in an embodiment of the present invention.

[0022] Reference numerals: 100, trapezoidal arm; 110, adjustment assembly; 111, mounting block; 112, adjustment plate; 113, front and rear adjustment plate; 114, up and down adjustment plate; 115, left and right adjustment plate; 120, arm bracket; 121, guide groove; 122, tapered hole; 123, fastening threaded hole; 200, steering tie rod; 210, hinge; 211, tapered pin rod; 212, threaded pin rod; 220, locking groove; 300, steering knuckle; 400, axle; 500, clamp. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0028] In the structure of modern vehicles, the steering trapezoidal mechanism is a key component for the vehicle to perform steering operations. When the vehicle is turning, the steering trapezoidal mechanism can ensure that the wheels at both ends of the axle 400 are deflected at a fixed angle relationship, so that the two steering wheels can make circular motions with different turning radii, realize rolling contact between the tires and the ground, reduce tire wear, and improve the steering performance of the vehicle.

[0029] The existing steering trapezoidal mechanism is usually designed by computer simulation. First, some preliminary dimensional parameters of the steering trapezoidal mechanism are designed by computer simulation. Then, the effect of the steering trapezoidal mechanism with the preliminary dimensional parameters in actual application is confirmed through production and vehicle installation verification. However, in order to verify the effect of different dimensional parameters, it is usually necessary to produce multiple sets of steering trapezoidal mechanisms of different sizes. The production of each set of steering trapezoidal mechanism requires a lot of materials and manpower, resulting in a very high design cost of the steering trapezoidal mechanism.

[0030] In addition, each time a new set of steering trapezoidal mechanisms was replaced during the experiment, complex assembly and disassembly operations were required, which not only increased the workload, but also greatly delayed the progress of the experiment and affected the overall R&D cycle.

[0031] like Figures 1 to 4As shown, in order to conveniently adjust the geometrical dimension parameters of the steering trapezoidal mechanism in the vehicle loading experiment, so as to verify the actual effect of the steering trapezoidal mechanism under different dimension parameters. In the embodiment of the present invention, a steering trapezoidal mechanism of a vehicle is introduced.

[0032] The steering trapezoidal structure mainly includes: a steering knuckle 300 , a trapezoidal arm 100 and a steering tie rod 200 .

[0033] Specifically, the steering knuckle 300 is swingably disposed at the end of the axle 400 for mounting the steering wheel. The trapezoidal arm 100 is disposed obliquely to the axle 400 and connected to the steering knuckle 300 at one end. The steering tie rod 200 is hinged to the end of the trapezoidal arm 100 that is away from the steering knuckle 300. Preferably, one end of the trapezoidal arm 100 is fixedly connected to the steering knuckle 300, and the other end of the trapezoidal arm 100 extends toward the mid-vertical plane of the axle 400. In addition, the trapezoidal arm 100 is cantilevered obliquely from the outer periphery of the axle 400. The steering tie rod 200 is hinged to the other end of the trapezoidal arm 100.

[0034] The tie rod 200 and the axle 400 are arranged parallel to each other in the initial position. The two ends of the tie rod 200 are respectively provided with the trapezoidal arms 100. Moreover, the trapezoidal arms 100 are movably connected with the axle 400 through the steering knuckle 300. The tie rod 200 is parallel to the axle 400, so that the tie rod 200 and the axle 400 and the trapezoidal arms 100 at both ends of the axle 400 together form a trapezoidal connecting rod mechanism.

[0035] An adjustment assembly 110 is provided at the connection between the trapezoidal arm 100 and the steering knuckle 300 , for adjusting the relative position of the steering tie rod 200 and the axle 400 .

[0036] Specifically, one end of the trapezoidal arm 100 is connected to the steering knuckle 300 through the adjustment assembly 110, and the relative position of the trapezoidal arm 100 and the steering knuckle 300 can be adjusted by setting the adjustment assembly 110. For example, by adjusting the front-to-back position, left-to-right position, or up-down position of the trapezoidal arm 100 and the steering knuckle 300, the front-to-back spacing between the steering tie rod 200 and the axle 400, the length of the steering tie rod 200, or the height position of the steering tie rod 200 and the axle 400 can be adjusted accordingly, thereby adjusting the ratio of the deflection angles between the two trapezoidal arms 100 in the swinging process of the steering trapezoidal mechanism composed of them.

[0037] In this embodiment, the steering trapezoidal mechanism can freely adjust its own dimensional parameters by adjusting the component 110, so that a set of steering trapezoidal mechanisms can be used to conveniently verify the effect of the steering trapezoidal mechanism under various dimensional parameters in actual use, which can not only speed up the progress of the verification experiment, but also save the production cost.

[0038] like Figure 4 As shown, based on the above embodiment, in another embodiment of the present invention, a trapezoidal arm 100 is introduced to facilitate installation of an adjustment component 110.

[0039] The trapezoidal arm 100 includes an arm support 120 provided with a guide groove 121. The adjustment assembly 110 is embedded in the guide groove 121. The guide groove 121 vertically penetrates the vertical side surface of the arm support 120 and extends along the length direction of the arm support 120.

[0040] Specifically, the arm bracket 120 is provided with a guide groove 121 that passes through both sides. The guide groove 121 extends from one end of the arm bracket 120 in a straight line direction, and the extension length is at least greater than one third of the length of the arm bracket 120. Moreover, one end of the adjustment component 110 is fixedly connected to the steering knuckle 300, and the other end of the adjustment component 110 is embedded in the guide groove 121.

[0041] By adjusting the relative position of the adjusting component 110 and the guide groove 121, the relative position of the arm bracket 120 and the adjusting component 110 in three directions perpendicular to each other can be adjusted, thereby adjusting the relative position of the trapezoidal arm 100 and the steering knuckle 300 to achieve adjustment of the dimensional parameters of the steering trapezoidal mechanism.

[0042] This will reduce the design and verification costs of the steering trapezoidal mechanism, improve experimental efficiency, and accelerate the research and development process of the steering trapezoidal mechanism. It will also improve the overall performance of the vehicle steering system and ensure the stability and safety of the vehicle under various driving conditions.

[0043] Based on the above embodiment, in another embodiment of the present invention, an adjustment component 110 disposed in a steering ladder mechanism is introduced.

[0044] The adjustment assembly 110 includes a mounting block 111 and an adjustment plate 112. Specifically, the mounting block 111 is embedded in the guide groove 121 and has a gap with the side wall of the guide groove 121. Correspondingly, the adjustment plate 112 is padded in the gap between the mounting block 111 and the guide groove 121. When adjusting the size of the steering trapezoidal mechanism, the relative position of the arm bracket 120 and the adjustment assembly 110 can be adjusted by adjusting the number of adjustment plates 112 on both sides of the mounting block 111 in the same direction.

[0045] For example, the adjustment plate 112 includes: a front and rear adjustment plate, an upper and lower adjustment plate, and a left and right adjustment plate. In addition, the mounting block 111 is provided with two through holes. The steering knuckle 300 is provided with an internal threaded hole that matches the through hole. The bolt can pass through the through hole to connect with the internal threaded hole of the steering knuckle 300 and fix the trapezoidal arm 100 on the steering knuckle 300. The left and right adjustment plates are provided with through holes corresponding to the through holes of the mounting block 111. The bolts penetrate the left and right adjustment plates and the mounting block 111 to ensure that the left and right adjustment plates move together with the mounting block 111. In addition, the left and right sides of the trapezoidal arm 100 are respectively provided with left and right adjustment plates, which are clamped and fixed on the steering knuckle 300 by the left and right adjustment plates.

[0046] In the front-to-back direction, the two ends of the mounting block 111 have a gap with the guide groove 121 and are padded with front-to-back adjustment plates. The trapezoidal arm 100 can be moved backward relative to the steering knuckle 300 by reducing the front-to-back adjustment plates at the front end of the mounting block 111 and increasing the front-to-back adjustment plates at the rear end of the mounting block 111, thereby reducing the spacing between the steering tie rod 200 and the axle 400.

[0047] Alternatively, in the up-down direction, both ends of the mounting block 111 have gaps with the guide groove 121 and upper and lower adjustment plates are provided. By reducing the upper and lower adjustment plates at the upper end of the mounting block 111 and increasing the upper and lower adjustment plates at the lower end of the mounting block 111, the trapezoidal arm 100 can be moved downward relative to the steering knuckle 300, thereby reducing the height of the steering tie rod 200 relative to the axle 400.

[0048] In this embodiment, the length or deflection angle of the steering trapezoidal mechanism in the experiment can be adjusted by adjusting the assembly 110. Without replacing the entire mechanism, the geometric size parameters can be quickly adjusted, saving the time of assembly and disassembly. In addition, the steering trapezoidal mechanism with different size parameters is tested to verify the influence of the steering trapezoidal arm 100 on tire wear, steering accuracy, etc. during driving after it is actually installed on the vehicle, so as to more accurately evaluate the effects of different parameters.

[0049] On the basis of the above-mentioned embodiment, in another embodiment of the present invention, in order to enable the steering tie rod 200 to connect two trapezoidal arms 100 with different spacings and adapt to the characteristics of changes in dimensional parameters of the steering trapezoidal mechanism, a connection structure between the trapezoidal arm 100 and the steering tie rod 200 is introduced.

[0050] The other end of the arm support 120 opposite to the guide groove 121 is provided with a tapered hole 122. The central axis of the tapered hole 122 is perpendicular to the direction in which the guide groove 121 penetrates the arm support 120, so as to facilitate the installation and removal of the steering tie rod 200.

[0051] Specifically, the steering tie rod 200 and the arm bracket 120 are rotatably connected via a hinge 210. The hinge 210 is mounted on the end of the steering tie rod 200. In addition, one end of the hinge 210 is arranged to coincide with the central axis of the tapered hole 122.

[0052] Based on the above embodiment, in another embodiment of the present invention, a steering trapezoidal mechanism of a vehicle is introduced.

[0053] like Figure 3 As shown, the hinge 210 is provided with a tapered pin and a threaded pin connected by a spherical end. The tapered pin extends in the vertical direction and coincides with the central axis of the tapered hole 122. The threaded pin extends in the horizontal direction and coincides with the central axis of the steering tie rod 200.

[0054] In addition, the two ends of the steering tie rod 200 are respectively provided with internal thread structures. The two internal thread structures have opposite rotation directions. The threaded pin is provided with an external thread structure corresponding to the rotation direction of the internal thread structure.

[0055] In this way, when adjusting the size of the steering trapezoidal mechanism during the experiment, the spacing between the trapezoidal arms 100 at both ends can be adjusted by rotating the steering tie rod 200, so that the steering trapezoidal mechanisms with different size parameters can be replaced in a short time, reducing the time of assembly and disassembly operations.

[0056] like Figure 2 and Figure 3 As shown, based on the above embodiment, in order to prevent the steering tie rod 200 and the hinge 210 from loosening during use, another embodiment of the present invention introduces a steering tie rod 200 with an anti-loosening structure.

[0057] The end of the steering tie rod 200 is provided with a locking groove 220. The locking groove 220 extends from the end surface of the steering tie rod 200 to the middle of the steering tie rod 200 along the axial direction of the steering tie rod 200, dividing the end of the steering tie rod 200 into two parts.

[0058] Specifically, the locking groove 220 divides the end of the tie rod into two parts that can be closed under pressure and restored to their original positions, so as to change the diameter of the end of the steering tie rod 200. When the end of the steering tie rod 200 is subjected to a clamping force, the internal thread structure of the steering tie rod 200 can reduce its diameter due to the closing of the end and be locked with the threaded pin.

[0059] Furthermore, the steering trapezoidal mechanism further comprises a clamp 500 which is sleeved on the outer periphery of the steering tie rod 200 and is used to clamp and squeeze the end of the steering tie rod 200 to fasten the hinge 210 to the steering tie rod 200 .

[0060] Based on the above embodiment, in another embodiment of the present invention, a steering trapezoidal mechanism of a vehicle is introduced.

[0061] The adjustment plate 112 includes a front and rear adjustment plate. The front and rear adjustment plates are respectively arranged in the gaps between the end surfaces of the mounting block 111 at both ends in the length direction of the arm support 120 and the side walls of the guide slot 121 to adjust the relative positions of the arm support 120 and the adjustment assembly 110 in the length direction of the arm support 120.

[0062] Furthermore, the arm bracket 120 is provided with a fastening threaded hole 123 , which passes through from the end surface of the arm bracket 120 to the guide groove 121 along the length direction of the arm bracket 120 , and a bolt can be installed to tighten the front and rear adjustment plates.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle steering trapezoidal mechanism, characterized in that: include: A steering knuckle (300) is swingably disposed at the end of the axle (400) and is used for mounting a steering wheel; A trapezoidal arm (100) arranged obliquely to the axle (400) and connected to the steering knuckle (300) at one end; A steering tie rod (200) is hingedly connected to an end of the trapezoidal arm (100) that is away from the steering knuckle (300); Wherein, the two ends of the steering tie rod (200) are respectively provided with the trapezoidal arms (100) and are connected to the axle (400) via the steering knuckle (300) to form a connecting rod mechanism; An adjustment component (110) is provided at the connection between the trapezoidal arm (100) and the steering knuckle (300) for adjusting the relative position of the steering tie rod (200) and the axle (400).

2. The vehicle steering trapezoidal mechanism according to claim 1, characterized in that: The trapezoidal arm (100) comprises an arm support (120) provided with a guide groove (121), and the adjustment component (110) is embedded in the guide groove (121); The guide groove (121) vertically penetrates the vertical side surface of the arm support (120) and extends along the length direction of the arm support (120); the length of the guide groove (121) is at least greater than one third of the length of the arm support (120); One end of the adjustment component (110) is connected to the steering knuckle (300), and the other end of the adjustment component (110) is embedded in the guide groove (121) for adjusting the relative position with respect to the guide groove (121).

3. The vehicle steering trapezoidal mechanism according to claim 2, characterized in that: The adjustment component (110) comprises: a mounting block (111) embedded in the guide groove (121) and having a gap with a side wall of the guide groove (121); An adjustment plate (112) is cushioned in the gap between the mounting block (111) and the guide groove (121); Wherein, the number of the adjustment plates (112) on both sides of the mounting block (111) in the same direction is changed to adjust the relative position of the arm bracket (120) and the adjustment assembly (110).

4. The vehicle steering trapezoidal mechanism according to claim 2 or 3, characterized in that: A tapered hole (122) is provided at the other end of the arm bracket (120) opposite to the guide groove (121), and a central axis of the tapered hole (122) is perpendicular to the direction in which the guide groove (121) passes through the arm bracket (120); The hinge (210) mounted on the end of the steering tie rod (200) is arranged to coincide with the central axis of the tapered hole (122).

5. The vehicle steering trapezoidal mechanism according to claim 4, characterized in that: The hinge (210) is provided with a tapered pin rod and a threaded pin rod rotatably connected via a spherical end; The tapered pin rod extends in a vertical direction and is arranged to coincide with the central axis of the tapered hole (122); the threaded pin rod extends in a horizontal direction and coincides with the central axis of the steering tie rod (200).

6. The vehicle steering trapezoidal mechanism according to claim 5, characterized in that: Both ends of the steering tie rod (200) are respectively provided with internal thread structures, the two internal thread structures have opposite rotation directions, and the threaded pin is provided with external thread structures corresponding to the rotation directions of the internal thread structures.

7. The vehicle steering trapezoidal mechanism according to claim 4, characterized in that: The end of the steering tie rod (200) is provided with a locking groove (220), and the locking groove (220) extends from the end surface to the middle along the axial direction of the steering tie rod (200), and separates the end of the steering tie rod (200) into two parts that are compressed and closed and can return to their original positions, so as to make the diameter of the end of the steering tie rod (200) variable.

8. The vehicle steering trapezoidal mechanism according to claim 7, characterized in that: It also includes a clamp sleeved on the outer periphery of the steering tie rod (200) and used for clamping and squeezing the end of the steering tie rod (200) to fasten the hinge (210) to the steering tie rod (200).

9. The vehicle steering trapezoidal mechanism according to claim 3, characterized in that: The adjustment plate (112) comprises front and rear adjustment plates (113). The front and rear adjustment plates (113) are respectively arranged in the gaps between the end surfaces at both ends of the mounting block (111) in the length direction of the arm support (120) and the side walls of the guide groove (121), so as to adjust the relative positions of the arm support (120) and the adjustment assembly (110) in the length direction of the arm support (120).

10. The vehicle steering trapezoidal mechanism according to claim 9, characterized in that: The arm bracket (120) is provided with a fastening threaded hole (123), which passes through from the end surface of the arm bracket (120) to the guide groove (121) along the length direction of the arm bracket (120), and can be installed with a bolt to tighten the front and rear adjustment plates (113).

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