Steering pull rod and skibob

Abstract

The utility model discloses a steering pull rod and a skibob and belongs to the technical field of chassis steering. The steering mechanism is characterized by comprising a steering thrust assembly, a knuckle bearing assembly and a connecting rod, the steering thrust assembly comprises a U-shaped connector and a connecting arm. Two side wings which are arranged in parallel are arranged at one end of the connecting arm, and coaxial connecting inner holes are formed in the two side wings; a steering inner hole is formed in the other end of the connecting arm, and the center line of the steering inner hole is perpendicular to the center line of the connecting inner hole. A steering inner hole of the connecting arm is connected with the head of the U-shaped connector through a locking bolt and a self-locking nut. The knuckle bearing assembly comprises a rod end body, an outer ring and a ball pin; one end of the rod end body is connected with the outer ring into a whole, and the spherical surface of the ball pin is movably assembled with the outer ring. The two ends of the connecting rod are connected with the tail of the U-shaped connector and the other end of the rod end body respectively. The swing mechanism can swing up and down in a large range, can swing at a low speed, and can also swing in a universal inclined and roundabout mode.

Description

Technical Field

[0001] The utility model relates to a steering rod and a ski vehicle, belonging to the technical field of chassis steering. Background Art

[0002] The steering tie rod is a key component in the steering system of an independent suspension chassis, connecting the steering gear and the steering wheel. It ensures safe steering and bouncing of the wheels, transmits force and torque between the frame and the axle (wheels), and bears the vehicle's load, maintaining normal road travel. It keeps track of wheelbase and front wheel alignment within acceptable limits, ensuring good vehicle stability.

[0003] Recreational vehicles, such as skis, are used in harsh road conditions with abundant dust, sand, mud, and high and low temperature variations. Therefore, steering rods are required to have excellent wear resistance, high ability to withstand alternating radial and axial loads, large swing and rotation angles, high ability to withstand high-frequency shocks, rapid maintenance, and easy installation. Traditional steering rods are difficult to meet these requirements.

[0004] The existing steering tie rods generally have the following problems: (1) The swing angle adjustment is insufficient and it is difficult to meet the requirements of harsh working conditions; (2) The installation and maintenance are complicated, and usually the entire rod needs to be maintained, which is costly; (3) The internal friction pair is poorly matched, which increases wear and makes it difficult to meet the life requirements; (4) Traditional tie rods cannot accurately control the initial torque requirements and cannot meet the requirements of special working conditions. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a steering rod and a ski vehicle that are simple and easy to install and maintain, which solves the problems of the existing steering rod such as easy wear, small swing adjustment angle, difficult replacement and installation, high maintenance cost, and inability to accurately control the initial torque.

[0006] The technical solution of the utility model is as follows:

[0007] The first object of the utility model is to provide: a steering rod, which is characterized in that it includes: a steering thrust component, a joint bearing component and a connecting rod.

[0008] The steering thrust assembly includes a U-shaped joint and a connecting arm; one end of the connecting arm is provided with two parallel side wings, and the two side wings are provided with coaxial connecting inner holes; the other end of the connecting arm is provided with a steering inner hole, and the center line of the steering inner hole is perpendicular to the center line of the connecting inner hole; the steering inner hole of the connecting arm is connected to the head of the U-shaped joint through a locking bolt and a self-locking nut.

[0009] The spherical bearing assembly includes a rod end, an outer ring, and a ball pin. One end of the rod end is integrally connected to the outer ring, and the spherical surface of the ball pin is movably assembled with the outer ring. The connecting rod is connected to the tail of the U-shaped joint and the other end of the rod end at both ends.

[0010] Unlike traditional steering rods that need to be replaced entirely after failure, the steering rod, steering thrust assembly and spherical bearing assembly of the utility model are independent operating units. After the steering thrust assembly and spherical bearing assembly fail, they can be quickly replaced, and maintenance and replacement operations are convenient.

[0011] The steering thrust assembly is connected by locking bolts and self-locking nuts, which play a locking connection role and transmit power. It is quick and easy to install and can rotate freely. During operation, the vehicle chassis can be steered and balanced within a large angle range.

[0012] The steering thrust assembly of the utility model can realize a large range of up and down swinging, can realize low-speed swinging, and can cooperate with the joint bearing assembly to realize universal tilting and circuitous swinging.

[0013] Furthermore, the walls of the two connecting inner holes are each provided with an injection-molded first wear-resistant bushing, while the wall of the turning inner hole is provided with an injection-molded second wear-resistant bushing. The first and second wear-resistant bushings are injection-molded and interference-fitted into the connecting inner hole and the turning inner hole of the connecting arm, respectively, and then machined to the installation dimensions. This reduces the friction coefficient during torsion and swinging during operation, thereby increasing service life. Furthermore, the initial torque between the U-joint and the connecting arm can be precisely controlled based on the required operating conditions by using the locking bolts and self-locking nuts.

[0014] Furthermore, the outer end of the first wear-resistant bushing extends outward, and a flange is formed on the outer end surface connecting to the inner hole, which can enhance the fixing effect, reduce the rigid contact between the metal part of the outer end surface of the wing and other components, and improve the service life. The two side ends of the second wear-resistant bushing extend outward and are higher than the two side end surfaces of the inner hole. When the connecting arm is installed in the U-shaped cavity of the U-shaped joint, the two ends of the second wear-resistant bushing contact with the U-shaped joint, avoiding contact between the metal parts of the two, reducing rigid contact, and improving the service life.

[0015] Furthermore, the tail of the U-shaped joint is provided with an external thread, and the corresponding end face of the connecting rod is provided with a matching threaded hole. After the U-shaped joint and the connecting rod are threaded together, they are connected by cold extrusion instead of traditional nut locking, which reduces the difficulty of installation. Cold extrusion produces ribs, making the connection between the two more secure.

[0016] Furthermore, the other end of the rod end body is provided with an external thread, and the corresponding end face of the connecting rod is provided with a matching threaded hole. The rod end body is threadedly connected to the connecting rod and locked with a locking nut, and the assembly center distance can be fine-tuned during the assembly process.

[0017] Furthermore, the outer side wall of the connecting rod is provided with a wrench surface, which facilitates the installation and adjustment of the steering rod with a wrench.

[0018] A second object of the present invention is to provide a ski vehicle, characterized by including the aforementioned steering rods. The steering rods are arranged in pairs, with the side wings of the two steering rods respectively connected to the steering shaft of the ski vehicle, and the four side wings are arranged in a crosswise manner; the ball pins of the two steering rods are respectively connected to the suspension swing arms on both sides of the ski vehicle. The steering rods of the present invention control the steering of the wheels during the steering process of the ski vehicle, significantly increasing the steering angle and improving steering adjustment performance. They are easy to install and facilitate subsequent maintenance and replacement, have high wear resistance, and have a strong load-bearing capacity.

[0019] The beneficial effects of the utility model are:

[0020] (1) The embedded first wear-resistant bushing and the second wear-resistant bushing can effectively reduce the friction coefficient during use, and can increase the contact area and service life through subsequent machining. In addition, the initial torque between the U-joint and the connecting arm can be accurately controlled according to the requirements of the working conditions;

[0021] (2) The steering thrust assembly is connected to the U-shaped joint through a locking bolt and a self-locking nut, making the connection more convenient and the installation simple without reducing the steering function;

[0022] (3) The steering thrust assembly can achieve a large range of up and down swings, increase the steering adjustment function, adjust the steering range better, and can cooperate with the joint bearing to achieve universal tilt and circuitous swing;

[0023] (4) User operation is convenient and simple. When parts fail, only the steering thrust mechanism or joint bearing needs to be replaced, which reduces the maintenance cost of the steering system.

[0024] (5) The U-shaped joint and the connecting rod are connected by cold extrusion, replacing the traditional nut locking function, which is easy to install and adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the steering rod in Example 1;

[0026] Figure 2 Schematic diagram of the structure of the steering rod in Example 1;

[0027] Figure 3 Schematic diagram of the structure of the connecting arm in Example 1;

[0028] Figure 4 Schematic diagram of the structure of the connecting arm in Example 1;

[0029] Figure 5 Schematic diagram of the assembly of the U-shaped joint and the connecting rod in Example 1;

[0030] Figure 6 Schematic diagram of the assembly of the U-shaped joint and the connecting rod in Example 1;

[0031] Figure 7 Schematic diagram of the structure of the spherical plain bearing assembly in Example 1;

[0032] Figure 8 Schematic diagram of the assembly of the steering rod and the steering gear core shaft in Example 2;

[0033] In the figure: connecting rod 1, wrench surface 1-1, U-shaped joint 2, connecting arm 3, wing 3-1, connecting inner hole 3-2, steering inner hole 3-3, locking bolt 4, self-locking nut 5, rod end body 6, outer ring 7, ball pin 8, first wear-resistant bushing 9, second wear-resistant bushing 10, locking nut 11, steering gear core shaft 12. DETAILED DESCRIPTION

[0034] Example 1

[0035] A steering rod, such as Figure 1 、 Figure 2 As shown, it includes: a steering thrust assembly, a connecting rod 1, and a joint bearing assembly.

[0036] Steering thrust components, such as Figure 1 、 Figure 2 As shown, it includes a U-shaped joint 2 and a connecting arm 3. Figure 3 、 Figure 4 As shown, one end of the connecting arm is equipped with two parallel wings 3-1, each with a coaxial connecting inner hole 3-2. The other end of the connecting arm is equipped with a turning inner hole 3-3, the centerline of which is perpendicular to the centerline of the connecting inner hole. The turning inner hole of the connecting arm is connected to the head of the U-joint via a locking bolt 4 and a self-locking nut 5.

[0037] Spherical plain bearing components, such as Figure 1 、 Figure 2 、 Figure 7 As shown, it includes a rod end body 6, an outer ring 7, and a ball pin 8. One end of the rod end body is connected to the outer ring as a whole, and the spherical surface of the ball pin is movably assembled with the outer ring. The two ends of the connecting rod are respectively connected to the tail of the U-shaped joint and the other end of the rod end body.

[0038] In one embodiment of the present invention, Figure 3 、 Figure 4As shown, the walls of the two connecting inner holes are respectively provided with injection-molded first wear-resistant bushings 9, and the wall of the turning inner hole is provided with injection-molded second wear-resistant bushings 10. After injection molding, the first and second wear-resistant bushings are interference-fitted into the connecting inner hole and the turning inner hole of the connecting arm, and then machined to the installation dimensions. This can reduce the friction coefficient during torsion and swinging during operation, increase service life, and accurately control the initial torque according to the required operating conditions.

[0039] In one embodiment of the present invention, Figure 3 As shown, the outer end of the first wear-resistant bushing 9 extends outward and forms a flange on the outer end surface connected to the inner hole 3-2; Figure 4 As shown, both side ends of the second wear-resistant bushing 10 extend outwards respectively and are higher than both side end surfaces facing the inner hole.

[0040] In one embodiment of the present invention, Figure 5 、 Figure 6 As shown, the tail of the U-shaped joint is provided with an external thread, and the corresponding end face of the connecting rod is provided with a matching threaded hole. The U-shaped joint and the connecting rod are threaded and connected by cold extrusion (cold extrusion produces ribs to make the connection between the two more secure).

[0041] In one embodiment of the present invention, Figure 1 、 Figure 2 As shown, the other end of the rod end body 6 is provided with an external thread, and the corresponding end face of the connecting rod is provided with a matching threaded hole. The rod end body is threadedly connected to the connecting rod and is locked with a locking nut 11 for adjustment.

[0042] In one embodiment of the present invention, Figure 5 、 Figure 6 As shown, the outer side wall of the connecting rod 1 is provided with a wrench surface 1-1, which is convenient for using a wrench to install and adjust the steering rod.

[0043] Example 2

[0044] A ski vehicle, comprising the steering rod of embodiment 1, such as Figure 8 As shown, the side wings 3-1 of the two steering rods are respectively connected to the steering shaft 12 of the ski vehicle, and the four side wings are cross-distributed. The flanges at the outer ends of the first wear-resistant bushings 9 can prevent the metal parts of the side wings from contacting each other; the ball pins of the two steering rods are respectively connected to the suspension swing arms on both sides of the ski vehicle.

[0045] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A steering rod, characterized in that: include: The steering thrust assembly includes a U-shaped joint and a connecting arm; one end of the connecting arm is provided with two parallel side wings, each of which has a coaxial connecting inner hole; the other end of the connecting arm is provided with a steering inner hole, and the center line of the steering inner hole is perpendicular to the center line of the connecting inner hole; the steering inner hole of the connecting arm is connected to the head of the U-shaped joint via a locking bolt and a self-locking nut; The spherical bearing assembly includes a rod end body, an outer ring, and a ball pin; one end of the rod end body is connected to the outer ring as a whole, and the spherical surface of the ball pin is movably assembled with the outer ring; The connecting rod has two ends respectively connected to the tail of the U-shaped joint and the other end of the rod end body.

2. A steering rod according to claim 1, characterized in that: The hole walls of the two connecting inner holes are respectively provided with a first wear-resistant bushing formed by injection molding, and the hole wall turning to the inner hole is provided with a second wear-resistant bushing formed by injection molding.

3. A steering rod according to claim 2, characterized in that: The outer end of the first wear-resistant bushing extends outward and forms a flange on the outer end surface connected to the inner hole; the two side ends of the second wear-resistant bushing extend outward respectively and are higher than the two side end surfaces turning to the inner hole.

4. A steering tie rod according to claim 1, characterized in that: The tail of the U-shaped joint is provided with an external thread, and the corresponding end face of the connecting rod is provided with a matching threaded hole. The U-shaped joint and the connecting rod are threadedly connected and then connected by cold extrusion.

5. A steering tie rod according to claim 1, characterized in that: The other end of the rod end body is provided with an external thread, and the corresponding end face of the connecting rod is provided with a matching threaded hole. The rod end body is threadedly connected to the connecting rod and is locked with a locking nut.

6. A steering tie rod according to claim 1, characterized in that: The outer side wall of the connecting rod is provided with a wrench surface.

7. A ski vehicle, characterized in that: The invention comprises the steering rod according to any one of claims 1 to 6.

8. A ski vehicle according to claim 7, characterized in that: The steering rods are arranged in pairs, the side wings of the two steering rods are respectively connected to the steering gear core shaft of the ski vehicle, and the four side wings are cross-distributed; the ball pins of the two steering rods are respectively connected to the suspension swing arms on both sides of the ski vehicle.

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