A follow-up steering axle

Abstract

The present invention relates to the technical field of follow-up steering axles, and solves the problem that good control cannot be performed during the rotation process, resulting in a large steering radius, making it difficult to steer when the terrain is narrow, causing serious shaking of the vehicle body, and affecting the safety of heavy trailers. A follow-up steering axle is disclosed, including two left-right symmetrical wheel hubs and a steering shaft connected to the wheel hubs, an axle body connected between the steering shaft bodies, two left-right symmetrical steering return parts installed on the upper end of the axle body, a reversing positioning part installed on the lower end of the axle body away from the steering return air chamber, the two steering return parts are connected to the steering shaft body, the reversing positioning part is connected to the steering shaft body, the steering shaft body includes a connecting arm 1 and a connecting arm 2 installed in a special shape in the inner cavity of the wheel hub, a sleeve shaft connected to the axle body is installed on the connecting arm 1, and the sleeve shaft and the axle body are rotatably connected. The present invention enhances the steering and reversing safety in areas with narrow terrain.

Description

Technical Field

[0001] The present invention relates to the technical field of follow-up steering axles, in particular to a follow-up steering axle. Background Art

[0002] The axle is an important structure of the automobile and is mostly used for supporting the load of heavy trailers. The existing reversible axle adjusts according to the rotation direction of the heavy trailer when the heavy trailer turns. However, it cannot be well controlled during the rotation process, resulting in a large turning radius. It is difficult to turn or reverse on narrow terrain, causing severe shaking of the vehicle body and affecting the safety of the heavy trailer. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention provides a servo-steering axle that solves the problem of poor control during rotation, resulting in a large turning radius and difficulty steering on narrow terrain, causing severe body sway and compromising the safety of heavy trailers. This invention enhances steering and reversing safety in narrow terrain.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a follow-up steering axle, comprising two bilaterally symmetrical wheel hubs and a steering shaft connected to the wheel hubs, a shaft body connected between the steering shaft members, two bilaterally symmetrical steering return portions mounted on the upper ends of the shaft bodies, a reverse positioning portion mounted on the lower end of the shaft body away from the steering return air chamber, the two steering return portions connected to the steering shaft members, and the reverse positioning portion connected to the steering shaft member;

[0005] The steering shaft comprises a first connecting arm and a second connecting arm which are specially installed in the inner cavity of the wheel hub. A sleeve shaft connected to the shaft body is installed on the first connecting arm. The sleeve shaft and the shaft body are rotatably connected. The first connecting arm and the second connecting arm are symmetrically distributed on the wheel hub.

[0006] The steering return portion includes a steering return air chamber mounted on the shaft body, the steering return air chamber is provided with a push rod extending toward the wheel hub, one end of the push rod away from the steering return air chamber is connected to a swivel pin for stable connection, and the swivel pin is connected to a connecting arm;

[0007] The reversing positioning part includes a reversing positioning air chamber and a transverse tie rod connected to the reversing positioning air chamber. The left and right ends of the transverse tie rod are connected to the connecting arm 2, and a damping spring installed on the shaft body is connected to the transverse tie rod to establish the transmission of the force between the transverse tie rod and the shaft body.

[0008] Preferably, the transverse tie rod includes a steering rod and an arc-shaped positioning plate installed on the steering rod. The reversing positioning air chamber is fixed to the shaft body through a mounting seat installed on the shaft body. A splint bin is installed at the lower end of the mounting seat. The splint bin is in a "⊂" shape and is adapted to be built into the arc-shaped positioning plate. The output end adapted to the reversing positioning air chamber is provided with slots on the mounting seat, the splint bin and the arc-shaped positioning plate in a direction of action from top to bottom. The output end of the reversing positioning air chamber passes through the slot to limit the direction of the wheel hub.

[0009] Preferably, two left-right symmetrical mounting angle seats are installed on the shaft body, the steering return air chamber is installed on the mounting angle seats in an inclined shape, and the air ports opened on the two steering return air chambers are located on the same horizontal line.

[0010] Preferably, pad plate 1 and pad plate 2 are symmetrically installed in the plywood bin, the distance between the rear end plate of pad plate 1 and the opening of the plywood bin is greater than the length of the arc-shaped positioning plate extending into the plywood bin, the distance between the front end plate of pad plate 1 and the opening of the plywood bin is greater than the length of the arc-shaped positioning plate extending into the plywood bin, pad plate 2 is installed at the opening of the plywood bin, and the combined height of pad plate 1 and pad plate 2 is equivalent to the height difference between the arc-shaped positioning plate and the plywood bin.

[0011] Preferably, an L-shaped shaft arm is installed between the damping spring and the shaft body, and one end of the damping spring away from the L-shaped shaft arm is connected to the steering rod with a mounting sleeve, and a flat surface is assumed between the mounting sleeve and the front and rear end surfaces of the L-shaped shaft arm for horizontal connection of the damping spring.

[0012] Preferably, the arc-shaped positioning plate is installed in an L-shape on the upper end of the transverse tie rod, and the longitudinal structural length of the arc-shaped positioning plate is smaller than the transverse structural length.

[0013] Preferably, the connecting arm 1 and the connecting arm 2 are connected in a V shape, and a bent arm connected to the sleeve shaft is rotatably installed on the connecting arm 1. The bent arm is rigidly connected to the shaft body, and two left-right symmetrical stabilizing sleeves are installed on the shaft body.

[0014] Preferably, the connecting arm 1 is connected to the connecting arm 2 in an L-shape, and the sleeve shaft installed on the connecting arm 1 is directly connected to the shaft body.

[0015] Compared with the prior art, the present invention provides a follow-up steering axle with the following beneficial effects:

[0016] 1. The present invention solves the problem that the return radius of the vehicle is large when turning in narrow terrain, thereby affecting safe driving. The steering return part specifically includes a steering return air chamber and a push rod connected to the wheel hub. On the basis of a simple structure, it controls the rotation direction of the vehicle wheel hub, thereby reducing the return radius after turning in a narrow terrain area. The present invention enhances the safety factor during driving in a narrow terrain area.

[0017] 2. The present invention limits the direction of the tires of a vehicle in the reversing stage by setting a reversing positioning part, wherein the reversing positioning part includes an axial pull rod member that produces a pulling effect on the connecting arm 2, and the axial pull rod member specifically includes an arc-shaped positioning plate and a clamping plate bin for accommodating the extension of the arc-shaped positioning plate. The output end of the reversing return air chamber is extended to fix the position of the arc-shaped positioning plate in the clamping plate bin, thereby limiting the turning of the tire and making it return to the center, thereby avoiding the tire turning during the reversing process in a narrow terrain area, thereby causing the vehicle to fall during the adjustment process.

[0018] 3. The present invention installs two left-right symmetrical pad plates 1 and 2 in the splint bin to form a straight passage. When the arc positioning plate enters the splint bin, the installation position of the pad plate 2 is used to lift and limit the height of the arc positioning plate. Later, when the arc positioning plate moves to connect with the pad plate 1, the pad plate limits the height of the arc positioning plate, thereby enhancing the position of the slot holes on the arc positioning plate and the slot holes on the splint bin, thereby avoiding deviation and loss of function of the reversing positioning part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a top view of the overall structure of a follow-up steering axle of the present invention;

[0020] Figure 2 This is a perspective diagram of the overall structure of a follow-up steering axle of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure at BB in FIG;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0024] Figure 6 A top view of the connection between the slewing pin and some components of a follow-up steering axle of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of a follow-up steering axle straight rod and steering plate of the present invention;

[0026] Figure 8 This is a schematic diagram of the overall structure of a second embodiment of a follow-up steering axle of the present invention.

[0027] In the figure: 1. wheel hub; 2. steering shaft; 21. connecting arm 1; 22. connecting arm 2; 23. sleeve shaft; 24. bent arm; 3. shaft body; 4. steering return part; 41. steering return air chamber; 42. push rod; 421. straight rod; 422. steering plate; 43. swivel pin; 44. mounting angle seat; 5. reversing positioning part; 51. reversing positioning air chamber; 52. transverse tie rod; 521. steering rod; 522. arc-shaped positioning plate; 523. mounting seat; 524. splint bin; 525. pad plate 1; 526. pad plate 2; 53. damping spring.

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1-7 As shown, a follow-up steering axle includes two bilaterally symmetrical wheel hubs 1 and a steering shaft 2 connected to the wheel hubs 1, a shaft body 3 is connected between the steering shaft members 2, two bilaterally symmetrical stabilizing sleeves are installed on the shaft body 3, two bilaterally symmetrical steering return parts 4 are installed on the upper end of the shaft body 3, and a reversing positioning part 5 is installed on the lower end of the shaft body 3 away from the steering return air chamber 41, the two steering return parts 4 are connected to the steering shaft members 2, and the reversing positioning part 5 is connected to the steering shaft member 2. When the steering return parts 4 are connected to the steering shaft member 2 in specific use, the internal structural displacement of the steering return part 4 pulls the displacement of the steering shaft member 2, thereby adjusting the direction of the wheel hub 1, and the reversing positioning part 5 limits the steering of the wheel hub 1 through the positioning of its own mechanism, so that it remains in a reversing state;

[0031] The steering return portion 4 includes a steering return air chamber 41 installed on the shaft body 3, and two left-right symmetrical mounting angle seats 44 are installed on the shaft body 3. The steering return air chamber 41 is installed on the mounting angle seat 44 in an inclined shape. In this embodiment, the steering return air chamber 41 and the mounting angle seat 44 are installed at an angle of 30 degrees to the rear end. The inclined installation shortens the installation distance between the two wheel axles and the wheel hub 1, and after actual use, the installation at a 30-degree angle is the most labor-saving when pushing. The air ports opened on the two steering return air chambers 41 are all located on the same horizontal line, and the steering return air chamber 41 is provided with a push rod 42 extending toward the wheel hub 1. The push rod 42 is connected to a swivel pin 43 for stable connection at one end away from the steering return air chamber 41. In specific use, an air pipe is connected to the outside of the air port, and the other end of the air pipe is connected to the air source to ventilate the steering return air chamber 41. The push rod 42 extends, thereby generating a corresponding rotational force. Figure 7 The push rod 42 shown in this specific embodiment is composed of a straight rod 421 and a steering plate 422. The straight rod 421 is directly connected to the steering return air chamber 41, and the upper end of the steering plate 422 is connected to the straight rod 421 through a shaft, and the steering plate 422 and the shaft are rotatable on the shaft. A notch is provided on the front plate surface of the steering member away from the straight rod 421. The notch is interference-connected with the steering pin to achieve synchronous rotation of the steering pin when the steering plate 422 rotates. The steering shaft member includes a notch on the wheel hub 1. The inner cavity is symmetrically installed with a connecting arm 1 21 and a connecting arm 2 22. The hub 1 and the connecting arm 1 21 and the connecting arm 2 22 are all welded rigid connections. The connecting arm 1 21 and the connecting arm 2 22 are connected in a V-shape and are symmetrically distributed on the hub 1. The connecting arm 1 21 extends obliquely to the rear, and the connecting arm 2 22 extends obliquely to the front. A sleeve shaft 23 connected to the shaft body 3 is installed on the connecting arm 1 21. The sleeve shaft 23 is connected to the shaft body 3 for rotation. A bent arm 24 connected to the sleeve shaft 23 is rotatably installed on the connecting arm 21. The bent arm 24 is rigidly connected to the shaft body 3. The shaft body 3 is a horizontal square tube in this embodiment. The bent arm 24 includes a connecting section and a bent end. The connecting section is connected to the shaft body 3. The rear end face of the bent section is an arc surface, and the front end is a flat surface. The different shape panels of the bent section are set to meet the requirement that when the steering pin rotates, the arc surface adapts to the rotation of the steering pin while reducing the use of materials. The top of the arc surface is on the same plane as the steering pin and is connected to the connecting arm 21. The steering pin passes through the bent arm 24 from top to bottom and extends downward from the connecting arm 21. At the same time, the connecting arm 21 is interference fit with the steering pin to ensure that when the steering pin rotates, the connecting arm 21 moves synchronously with the steering pin, thereby adjusting the tire.

[0032] The reversing positioning part 5 includes a reversing positioning air chamber 51 and a transverse tie rod 52 connected to the reversing positioning air chamber 51. The left and right ends of the transverse tie rod 52 are connected to the connecting arm 22, and a damping spring 53 installed on the shaft body 3 is connected to the transverse tie rod 52 for establishing a connection between the force transmission between the transverse tie rod 52 and the shaft body 3. An L-shaped shaft arm is installed between the damping spring 53 and the shaft body 3. One end of the damping spring 53 away from the L-shaped shaft arm is connected to the steering rod 521 with a mounting sleeve. A flat surface is assumed between the mounting sleeve and the front and rear end surfaces of the L-shaped shaft arm for horizontal connection of the damping spring 53. The transverse tie rod 52 includes a steering rod 521 connected to the connecting arm 22. The length of the steering rod 521 is equal to the distance between the two wheel hubs 1 in the return state minus the connecting arm The value of the length of arm 22, the length of the steering rod 521 is equal to the length of the two wheel hubs 1 in the return state, and the arc-shaped positioning plate 522 installed on the steering rod 521, the arc-shaped positioning plate 522 is installed on the upper end of the transverse rod in an L-shape, the longitudinal structural length of the arc-shaped positioning plate 522 is less than the transverse structural length, the reversing positioning air chamber 51 is fixed to the shaft body 3 through the mounting seat 523 installed on the shaft body 3, and the lower end of the mounting seat 523 is installed with a splint bin 524, which is "⊂" shaped and adapted to the built-in arc-shaped positioning plate 522, and adapted to the output end provided with the reversing positioning air chamber 51. Slots are provided on the mounting seat 523, the splint bin 524, and the arc-shaped positioning plate 522 in the direction of action from top to bottom. The reversing positioning air chamber 51 The output end passes through the slot to limit the direction of the wheel hub 1, and a pad plate 1 525 and a pad plate 2 526 are installed symmetrically in the plywood bin 524. The distance between the rear end plate of the pad plate 1 525 and the opening of the plywood bin 524 is greater than the length of the arc-shaped positioning plate 522 extending into the plywood bin 524, and the distance between the front end plate of the pad plate 1 525 and the opening of the plywood bin 524 is greater than the length of the arc-shaped positioning plate 522 extending into the plywood bin 524. The pad plate 2 526 is installed at the opening of the plywood bin 524, and the combined height of the pad plate 1 525 and the pad plate 2 526 is equivalent to the height difference between the arc-shaped positioning plate 522 and the plywood bin 524. When the arc-shaped positioning plate 522 enters the plywood bin 524, the installation position of the pad plate 2 526 is used to lift and limit the arc-shaped positioning plate 522. When the vehicle is reversed, the reversing positioning air chamber 51 is inflated, and the output end in the reversing positioning air chamber 51 extends, passing through the mounting seat 523, the splint bin 524, and the arc positioning plate 522 in sequence through the slot. At this time, the mounting seat 523, the splint bin 524, and the arc positioning plate 522 are controlled by the output end and are in a relatively static state. As a result, the two connecting arms 22 connected to the two wheel hubs 1 are pulled by the two ends of the steering rod 521, causing the two tires to rotate inward at the same time.This changes the angle of the tire and makes the tire return to the correct position.

[0033] Example 2:

[0034] like Figure 8 As shown, on the basis of embodiment one, connecting arm one 21 and connecting arm two 22 are connected in an L shape, and the sleeve shaft 23 installed on connecting arm one 21 is directly connected to the shaft body 3. Compared with the first embodiment, in this embodiment, the bending arm 24 structure is saved. This method directly changes the relative angle between the shaft body 3 and the sleeve shaft 23 after the steering return air chamber 41 pushes or pulls back the push rod 42, and uses the shaft body 3 to enhance the stability of the connection of the wheel hub 1.

[0035] The electrical components described in this article are automatically controlled by a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail in this invention.

[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A follow-up steering axle, comprising two bilaterally symmetrical wheel hubs (1) and a steering shaft (2) connected to the wheel hubs (1), a shaft body (3) connected between the steering shaft members (2), two bilaterally symmetrical steering return portions (4) mounted on the upper ends of the shaft bodies (3), and a reverse positioning portion (5) mounted on the lower ends of the shaft bodies (3) away from the steering return air chamber (41), characterized in that: The two steering return parts (4) are connected to the steering shaft (2), and the reverse positioning part (5) is connected to the steering shaft (2); The steering shaft (2) includes a connecting arm 1 (21) and a connecting arm 2 (22) which are specially installed in the inner cavity of the wheel hub (1); a sleeve shaft (23) connected to the shaft body (3) is installed on the connecting arm 1 (21); the sleeve shaft (23) and the shaft body (3) are rotatably connected; the connecting arm 1 (21) and the connecting arm 2 (22) are symmetrically distributed on the wheel hub (1); The steering return portion (4) includes a steering return air chamber (41) mounted on the shaft body (3), the steering return air chamber (41) is provided with a push rod (42) extending toward the wheel hub (1), and one end of the push rod (42) away from the steering return air chamber (41) is connected to a swivel pin (43) for stable connection, and the swivel pin (43) is connected to the connecting arm (21); The reversing positioning portion (5) includes a reversing positioning air chamber (51) and a transverse tie rod (52) connected to the reversing positioning air chamber (51), the left and right ends of the transverse tie rod (52) are connected to the second connecting arm (22), and a damping spring (53) installed on the shaft (3) is connected to the transverse tie rod (52) for establishing the transmission of the action force between the transverse tie rod (52) and the shaft (3); The transverse tie rod (52) includes a steering rod (521) and an arc-shaped positioning plate (522) mounted on the steering rod (521). The reversing positioning air chamber (51) is fixed to the shaft body (3) through a mounting seat (523) mounted on the shaft body (3). A splint bin (524) is mounted at the lower end of the mounting seat (523). The splint bin (524) is in a "⊂" shape and is adapted to be built into the arc-shaped positioning plate (522). The output end of the reversing positioning air chamber (51) is adapted to be provided with a slotted hole on the mounting seat (523), the splint bin (524), and the arc-shaped positioning plate (522). The output end of the reversing positioning air chamber (51) passes through the slotted hole to limit the direction of the wheel hub (1).

2. The follow-up steering axle according to claim 1, characterized in that: Two left-right symmetrical mounting angle seats (44) are mounted on the shaft body (3), and the steering return air chamber (41) is mounted on the mounting angle seats (44) in an inclined shape. The air ports provided on the two steering return air chambers (41) are located on the same horizontal line.

3. The follow-up steering axle according to claim 1, characterized in that: A padding plate 1 (525) and a padding plate 2 (526) are symmetrically installed in the plywood bin (524). The distance between the rear end plate of the padding plate 1 (525) and the opening of the plywood bin (524) is greater than the length of the arc-shaped positioning plate (522) extending into the plywood bin (524). The distance between the front end plate of the padding plate 1 (525) and the opening of the plywood bin (524) is greater than the length of the arc-shaped positioning plate (522) extending into the plywood bin (524). The padding plate 2 (526) is installed at the opening of the plywood bin (524). The combined height of the padding plate 1 (525) and the padding plate 2 (526) is equal to the height difference between the arc-shaped positioning plate (522) and the plywood bin (524).

4. The follow-up steering axle according to claim 1, characterized in that: An L-shaped shaft arm is installed between the damping spring (53) and the shaft body (3), and one end of the damping spring (53) away from the L-shaped shaft arm is connected to the steering rod (521) with a mounting sleeve, and a flat surface is assumed between the mounting sleeve and the front and rear end surfaces of the L-shaped shaft arm for connecting the damping spring (53) in a horizontal shape.

5. The follow-up steering axle according to claim 3, characterized in that: The arc-shaped positioning plate (522) is mounted in an L-shaped manner on the upper end of the transverse tie rod, and the longitudinal structural length of the arc-shaped positioning plate (522) is shorter than the transverse structural length.

6. The follow-up steering axle according to claim 1, characterized in that: The connecting arm 1 (21) and the connecting arm 2 (22) are connected in a V-shape, and a bent arm (24) connected to the sleeve shaft (23) is rotatably mounted on the connecting arm 1 (21). The bent arm (24) is rigidly connected to the shaft body (3), and two left-right symmetrical stabilizing sleeves are mounted on the shaft body (3).

7. The follow-up steering axle according to claim 1, characterized in that The connecting arm 1 (21) and the connecting arm 2 (22) are connected in an L-shape, and the sleeve shaft (23) installed on the connecting arm 1 (21) is directly connected to the shaft body (3).

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