Amphibious front suspension system

Abstract

The invention relates to the field of amphibious vehicles, and discloses an amphibious front suspension system which comprises a mounting base, a drive axle assembly is fixedly mounted in the mounting base, hydraulic cylinders are hinged to the two sides of the top end of the mounting base, and a first connecting block and a second connecting block are fixedly connected to the two sides of the mounting base in the vertical direction correspondingly. The sides, away from each other, of the two first connecting blocks are connected with supporting arms through pin shafts correspondingly, the end, close to the mounting base, of each supporting arm is hinged to the movable end of each hydraulic cylinder, the sides, away from each other, of the two second connecting blocks are connected with an upper fork arm and a lower fork arm through pin shafts correspondingly, and side mounting frames are symmetrically arranged on the two sides of the mounting base. A ball cage universal joint is fixedly installed at the center position of the side installation frame, a tire is arranged on one side of the side installation frame, and a transmission shaft of the tire is fixedly connected with the other end of the ball cage universal joint fixedly installed at the center position of the side installation frame. And the system has higher stability and anti-interference performance.

Description

Technical Field

[0001] The invention relates to the field of amphibious vehicles, in particular to an amphibious front suspension system. Background Art

[0002] When the amphibious vehicle is working, its engine power is distributed through the transfer case, so that it can have power on water, power on land, and both power working at the same time. While the power is switched, the onshore structure, wheel status, suspension status, gear information, track status, intercooler status, etc. are automatically switched and controlled synchronously; the onshore structure, bow wing, tail wing, drainage mechanism, life-saving mechanism, etc. are also automatically switched and controlled synchronously.

[0003] However, the front suspension structure of the existing amphibious vehicle is complex, which is not convenient for maintenance and repair. At the same time, the large size makes it inconvenient to retract the tires when driving on water and land, and the structural stability and anti-interference ability are poor. Summary of the invention

[0004] The object of the present invention is to provide an amphibious front suspension system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an amphibious front suspension system, comprising a mounting seat, a drive axle assembly is fixedly installed in the mounting seat, and hydraulic cylinders are hingedly connected to the top and bottom sides of the mounting seat, a first connecting block and a second connecting block are fixedly connected to the mounting seat on both sides in the vertical direction, and the two first connecting blocks are respectively connected to support arms through pins on the sides away from each other, and each of the support arms is hingedly connected to the movable end of each hydraulic cylinder at one end close to the mounting seat, and the two second connecting blocks are respectively connected to an upper fork arm and a lower fork arm through pins on the sides away from each other, and side mounting frames are symmetrically arranged on both sides of the mounting seat, each of the upper fork arm and the lower fork arm is respectively fixedly connected to the top and bottom ends of the side mounting frames by bolts, and a ball cage universal joint is fixedly installed at the center of the side mounting frame, one end of the drive axle assembly is fixedly connected to one end of another ball cage universal joint, and the two ball cage universal joints are fixedly connected to each other at one side close to each other through a half shaft, a tire is arranged on one side of the side mounting frame, and the transmission shaft of the tire is fixedly connected to the other end of the ball cage universal joint fixedly installed at the center of the side mounting frame.

[0006] Preferably: shock absorbers are symmetrically arranged on both sides of the mounting seat, and the top end of each shock absorber is hinged to the bottom end of the corresponding support arm away from the mounting seat, and the bottom end of each shock absorber is hinged to the top end of the upper fork arm away from the mounting seat.

[0007] Preferably, the drive axle assembly comprises a drive axle housing fixedly mounted at the center of the mounting seat, and a transmission main shaft is rotatably connected in the drive axle housing via a bearing.

[0008] Preferably, one end of the transmission main shaft is fixedly connected with a driving bevel gear, and both sides inside the drive axle housing are rotatably connected with driven bevel gears meshing with the driving bevel gear.

[0009] Preferably, the center position of each driven bevel gear is respectively sleeved and fixed on the outside of the side transmission shaft, and the side transmission shaft is rotatably penetrated by the drive axle housing and both sides of the mounting seat and fixedly connected to one end of the ball cage universal joint close to one side of the mounting seat.

[0010] Preferably, two upper fork arms and two lower fork arms are respectively arranged on both sides of the mounting seat, and the two upper fork arms and the two lower fork arms are symmetrically distributed along both sides of the semi-axis.

[0011] Preferably, the upper fork arms and the lower fork arms on both sides of the half shaft are respectively connected to the corresponding second connecting blocks through pins.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The structure of the present invention requires that both sides of the mounting seat be folded up. When traveling on water, each hydraulic cylinder is controlled separately so that its movable end drives one end of the supporting arm to move. Through the articulation of the supporting arm with the first connecting block, and the articulation process of the two ends of the shock absorber with the supporting arm and the upper fork arm respectively, the upper fork arms and the lower fork arms on both sides of the mounting seat are respectively folded up along the pin connection of the second connecting block under the drive of the shock absorber, wherein each group of upper fork arms and lower fork arms share a pin for rotation, which simplifies the installation and design process of the suspension system, reduces the number and complexity of parts, and also reduces the difficulty of manufacturing and assembly. At the same time, the arrangement and layout of the overall structure make the space occupied by the suspension system smaller, optimize the space design of the vehicle chassis, and provide space for other key components such as power The upper fork arm and the lower fork arm are symmetrically distributed on both sides of the ball cage universal joint near the mounting seat, so that the axis of rotation of the upper fork arm and the lower fork arm during the folding process is consistent with the axis of the ball cage universal joint near the mounting seat. The influence of the suspension system movement on the power transmission path is significantly reduced, and the input end of the ball cage universal joint can be kept relatively stable to avoid the influence of excessive angle or rapid change on the transmission efficiency. It is particularly suitable for amphibious vehicles and can ensure the continuity and stability of power transmission during bumps or turns. The upper fork arm and the lower fork arm rotate around the same pin axis, which helps to reduce the lateral force or excess torque caused by the up and down movement of the tire, thereby optimizing the tire ground contact performance and improving the overall stability of the suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic side view of the structure of the present invention;

[0016] Figure 3 It is a top view schematic diagram of the structure of the present invention;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] In the figure: 1. mounting base; 2. drive axle assembly; 3. hydraulic cylinder; 4. first connecting block; 5. second connecting block; 6. support arm; 7. upper fork arm; 8. lower fork arm; 9. ball cage universal joint; 10. half shaft; 11. side mounting frame; 12. transmission shaft; 13. tire; 14. steering gear; 15. shock absorber; 21. drive axle housing; 22. transmission main shaft; 23. driving bevel gear; 24. driven bevel gear; 25. side transmission shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] Example

[0021] See also Figure 1-Figure 4 The amphibious front suspension system shown in the figure includes a mounting seat 1, a drive axle assembly 2 is fixedly installed in the mounting seat 1, and hydraulic cylinders 3 are hingedly connected to the top and bottom sides of the mounting seat 1, and first connecting blocks 4 and second connecting blocks 5 are fixedly connected to the mounting seat 1 along the vertical direction on both sides, and the two first connecting blocks 4 are respectively connected to support arms 6 through pins on the sides away from each other, and each support arm 6 is hingedly connected to the movable end of each hydraulic cylinder 3 at one end close to the mounting seat 1, and the two second connecting blocks 5 are respectively connected to upper fork arms 7 and lower fork arms 8 on the sides away from each other through pins. , and side mounting frames 11 are symmetrically arranged on both sides of the mounting seat 1, each upper fork arm 7 and lower fork arm 8 are fixedly connected to the top and bottom ends of the side mounting frame 11 by bolts respectively, and a ball cage universal joint 9 is fixedly installed at the center position of the side mounting frame 11, one end of the drive axle assembly 2 is fixedly connected to one end of another ball cage universal joint 9, and the two ball cage universal joints 9 are fixedly connected to each other at one side close to each other through a half shaft 10, a tire 13 is arranged on one side of the side mounting frame 11, and the transmission shaft 12 of the tire 13 is fixedly connected to the other end of the ball cage universal joint 9 fixedly installed at the center position of the side mounting frame 11.

[0022] In this embodiment, shock absorbers 15 are symmetrically arranged on both sides of the mounting seat 1, and the top of each shock absorber 15 is respectively hinged to the bottom end of the corresponding support arm 6 away from the mounting seat 1, and the bottom end of each shock absorber 15 is respectively hinged to the top end of the upper fork arm 7 away from the mounting seat 1. The drive axle assembly 2 includes a drive axle housing 21 fixedly mounted at the center of the mounting seat 1, and a transmission main shaft 22 is rotatably connected to the drive axle housing 21 through a bearing, and one end of the transmission main shaft 22 is fixedly connected to a driving bevel gear 23, and the two sides of the drive axle housing 21 are respectively rotatably connected to the driving bevel gear 23. The bevel gears 23 are meshed with each other as driven bevel gears 24, and the center position of each driven bevel gear 24 is respectively sleeved and fixed on the outside of the side transmission shaft 25, and the side transmission shaft 25 is rotatably penetrated by the drive axle housing 21 and the mounting seat 1 on both sides and is fixedly connected to one end of the ball cage universal joint 9 close to the mounting seat 1. Two upper fork arms 7 and lower fork arms 8 are respectively arranged on both sides of the mounting seat 1, and the two upper fork arms 7 and lower fork arms 8 are symmetrically distributed along both sides of the half shaft 10, and the upper fork arms 7 and lower fork arms 8 on both sides of the half shaft 10 are respectively connected to the corresponding second connecting block 5 through a pin shaft.

[0023] Furthermore, a steering gear 14 for steering is also provided on one side of the mounting seat 1, wherein the steering gear 14 is a technology that has been fully disclosed in the prior art and will not be described in detail here. At the same time, the drive axle assembly 2 is also provided with mutually meshing planetary gears and half-axle gears for realizing a differential driving process of the two tires 13 during a turning process, which has been fully disclosed in the prior art and will not be described in detail here.

[0024] Furthermore, the transmission main shaft 22 is fixedly connected to the power output end of the engine, so that the two side transmission shafts 25 are driven to rotate through the transmission of the transmission main shaft 22 and the meshing transmission of the active bevel gear 23 and the two driven bevel gears 24, and then each transmission shaft 12 is driven to rotate through the connection between the side transmission shaft 25 and the ball cage universal joint 9, and the transmission of the two ball cage universal joints 9 and the half shaft 10, so as to realize the rotation of the two tires 13 and realize driving on land. The shock absorbers 15 arranged on both sides of the mounting seat 1 are used for buffering and shock reduction during driving.

[0025] Furthermore, it is necessary to fold up both sides of the mounting seat 1. When traveling on water, each hydraulic cylinder 3 is controlled to make its movable end drive one end of the support arm 6 to move, through the articulation of the support arm 6 with the first connecting block 4, and the articulation of the two ends of the shock absorber 15 with the support arm 6 and the upper fork arm 7, so that the upper fork arms 7 and the lower fork arms 8 on both sides of the mounting seat 1 are respectively folded upward along the pin connection of the second connecting block 5 under the drive of the shock absorber 15, wherein each group of upper fork arms 7 and lower fork arms 8 share a pin for rotation, which simplifies the installation and design process of the suspension system, reduces the number and complexity of parts, and also reduces the difficulty of manufacturing and assembly. At the same time, the arrangement and layout of the overall structure make the space occupied by the suspension system smaller, optimize the space design of the vehicle chassis, and provide space for other key components such as the dynamic suspension system. More space is left for the force system and transmission mechanism, and the upper fork arm 7 and the lower fork arm 8 are symmetrically distributed on both sides of the ball cage universal joint 9 close to the mounting seat 1, so that the axis of rotation of the upper fork arm 7 and the lower fork arm 8 during the folding process is consistent with the axis of the ball cage universal joint 9 close to the mounting seat 1. The influence of the suspension system movement on the power transmission path is significantly reduced, and the input end of the ball cage universal joint 9 can be kept relatively stable to avoid the influence of excessive angle or rapid change on the transmission efficiency. It is particularly suitable for amphibious vehicles and can ensure the continuity and stability of power transmission during bumps or turns. The upper fork arm 7 and the lower fork arm 8 rotate around the same pin axis, which helps to reduce the lateral force or excess torque caused by the up and down movement of the tire 13, thereby optimizing the ground contact performance of the tire 13 and improving the overall stability of the suspension system.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An amphibious front suspension system, comprising a mounting seat (1), characterized in that: A drive axle assembly (2) is fixedly installed in the mounting seat (1), and hydraulic cylinders (3) are hingedly connected to both sides of the top of the mounting seat (1), and a first connecting block (4) and a second connecting block (5) are fixedly connected to both sides of the mounting seat (1) in a vertical direction, and the two first connecting blocks (4) are respectively connected to support arms (6) via pins on the sides away from each other, and each support arm (6) is hingedly connected to the movable end of each hydraulic cylinder (3) at one end close to the mounting seat (1), and the two second connecting blocks (5) are respectively connected to an upper fork arm (7) and a lower fork arm (8) via pins on the sides away from each other, and the mounting seat (1) is symmetrically provided with A side mounting frame (11) is provided, each of the upper fork arm (7) and the lower fork arm (8) is fixedly connected to the top and bottom ends of the side mounting frame (11) by bolts, and a ball cage universal joint (9) is fixedly installed at the center of the side mounting frame (11), one end of the drive axle assembly (2) is fixedly connected to one end of another ball cage universal joint (9), and the two ball cage universal joints (9) are fixedly connected to each other at one side close to each other through a half shaft (10), a tire (13) is provided on one side of the side mounting frame (11), and a transmission shaft (12) of the tire (13) is fixedly connected to the other end of the ball cage universal joint (9) fixedly installed at the center of the side mounting frame (11).

2. The amphibious front suspension system according to claim 1, characterized in that: Shock absorbers (15) are symmetrically arranged on both sides of the mounting seat (1), and the top end of each shock absorber (15) is hinged to the bottom end of the corresponding support arm (6) on the side away from the mounting seat (1), and the bottom end of each shock absorber (15) is hinged to the top end of the upper fork arm (7) on the side away from the mounting seat (1).

3. The amphibious front suspension system according to claim 2, characterized in that: The drive axle assembly (2) comprises a drive axle housing (21) fixedly mounted at the center of the mounting seat (1), and a transmission main shaft (22) is rotatably connected in the drive axle housing (21) via a bearing.

4. The amphibious front suspension system according to claim 3, characterized in that: One end of the transmission main shaft (22) is fixedly connected to a driving bevel gear (23), and both sides of the interior of the drive axle housing (21) are rotatably connected to driven bevel gears (24) that mesh with the driving bevel gear (23).

5. The amphibious front suspension system according to claim 4, characterized in that: The center position of each driven bevel gear (24) is respectively sleeved and fixed on the outside of the side transmission shaft (25), and the side transmission shaft (25) is rotatably arranged to penetrate the drive axle housing (21) and the two sides of the mounting seat (1) and is fixedly connected to one end of the ball cage universal joint (9) close to the mounting seat (1).

6. The amphibious front suspension system according to claim 5, characterized in that: Two upper fork arms (7) and a lower fork arm (8) are respectively arranged on both sides of the mounting seat (1), and the two upper fork arms (7) and the lower fork arms (8) are symmetrically distributed along both sides of the semi-axis (10).

7. The amphibious front suspension system according to claim 6, characterized in that: The upper fork arm (7) and the lower fork arm (8) on both sides of the half shaft (10) are respectively connected to the corresponding second connecting block (5) via a pin shaft.

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