Double-layer damping chassis

Abstract

The double-layer damping chassis comprises a first frame body, a second frame body and wheel type assemblies, the wheel type assemblies are arranged at the front end and the rear end of the second frame body, the first frame body is located over the second frame body, an elastic mechanism is arranged between the first frame body and the second frame body, and the middles of the wheel type assemblies are rotationally and slidably connected to the first frame body; the elastic mechanisms are symmetrically arranged on the two sides of the wheel type assembly, reset mechanisms are symmetrically arranged on the two sides of the wheel type assembly, when a bumpy area is encountered, small-range up-and-down fluctuation of the second frame body and the wheel type assembly is absorbed by the elastic mechanisms and the reset mechanisms, and then it is guaranteed that the first frame body is stable and not affected by jolting, and through the double-layer split type structure, the elastic mechanisms and the reset mechanisms between the double-layer split type structure and the elastic mechanisms and the reset mechanisms are matched; a double-layer buffering and two-way resetting cooperative damping system is formed, small-range up-down fluctuation can be absorbed by the elastic mechanism, the resetting mechanism can quickly return to the deviated wheel assembly, single-side transition swinging of the wheel assembly is avoided, it is ensured that the first frame body is always kept in a stable state, and the influence of jolt on the first frame body is effectively eliminated.

Description

Technical Field

[0001] This invention relates to the field of vehicle chassis technology, and more particularly to a double-layer shock-absorbing chassis. Background Technology

[0002] In special operations, field exploration, and transportation in unstructured terrain, mobile platforms often face the challenge of complex and rugged potholed roads, and conventional chassis cannot meet the requirements of such frequently potholed areas.

[0003] Existing chassis structures, especially multi-legged or wheel-legged chassis, primarily rely on direct cushioning of axles or suspension devices for their shock absorption systems. When faced with continuous and uneven bumps, this type of single-layer or integrated shock absorption design can easily transmit vibration energy directly to the upper structure of the load-bearing equipment or operating platform, resulting in poor equipment stability, damage to precision components, or a decrease in operational accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a double-layer shock-absorbing chassis to address the above problems.

[0005] This invention includes a first frame, a second frame, and a wheel assembly. The wheel assembly is located at the front and rear ends of the second frame. The first frame is positioned directly above the second frame. An elastic mechanism is provided between the first frame and the second frame. The wheel assembly is rotatably and slidably connected to the first frame in the middle, and reset mechanisms are symmetrically arranged on both sides of the wheel assembly. When encountering potholes, the small-range vertical fluctuations of the second frame and the wheel assembly are absorbed by the elastic mechanism and the reset mechanism, thereby ensuring that the first frame remains stable and unaffected by bumps. Through the double-layered split structure of the first and second frames, and in conjunction with the elastic mechanism and reset mechanism between them, a synergistic shock absorption system of double-layer buffering and bidirectional reset is formed. When the vehicle travels on potholes, the small-range vertical fluctuations between the second frame and the first frame are absorbed by the elastic mechanism, and the reset mechanism can quickly correct the offset wheel assembly, avoiding excessive unilateral swaying, ensuring that the first frame always remains stable, and effectively eliminating the impact of bumps on the first frame.

[0006] Specifically, the elastic mechanism includes a first base, a second base, a limiting screw, and a first elastic spring. The first base and the second base are arranged opposite to each other and connected by the limiting screw. An elastic spring is also provided between the first base and the second base. When there is a bump or jolt, the distance between the first base and the second base decreases, compressing the elastic spring. The limiting screw can move axially inside the first base or the second base.

[0007] Specifically, the elastic spring is initially in a compressed state.

[0008] Specifically, the second frame has accommodating areas on both the front and rear sides. The bottom of the accommodating area is penetrated by a connecting bearing. The wheel assembly includes a guide platform with a guide groove. The guide platform extends into the accommodating area and is sequentially inserted into the accommodating area and the guide groove through the connecting bearing to connect the wheel assembly and the second frame. The guide platform can slide axially and swing laterally along the accommodating area.

[0009] Specifically, the second frame is provided with tilting frames on both the front and rear sides. The projection of the tilting frame is an inverted triangle. The receiving area is located at the bottom of the tilting frame, and the connecting bearing is located at the bottommost end of the tilting frame.

[0010] Specifically, the receiving groove is waist-shaped, and its length is approximately equal to the height of the elastic mechanism.

[0011] Specifically, the reset mechanism is inclined, and its two ends are respectively connected to the second frame and the wheel assembly through two reset bases. The two reset bases, which are arranged at intervals and opposite to each other, are connected by a reset spring, and a buffer component is provided on one of the reset bases.

[0012] Specifically, the buffer assembly includes a limit buffer pad, which is threadedly connected to the reset base.

[0013] Specifically, the reset base is connected to the second frame and the wheel assembly respectively via a reset shaft. One of the reset bases protrudes outward to form a protruding end, which is provided with a reset hole. It also includes a mounting pull ring and a mounting bolt. One end of the mounting pull ring is rotatably connected to one of the reset shafts, and the other end is close to the other reset shaft. The mounting bolt passes through the reset base and is threaded to the mounting pull ring. Tightening the mounting bolt can cause the two oppositely arranged reset bases to move closer to each other, thereby compressing the reset spring.

[0014] Beneficial effects: By setting up a double-layered split structure of the first and second frames, and cooperating with the elastic and reset mechanisms between them, a synergistic shock absorption system with double-layer buffering and bidirectional reset is formed. When the vehicle travels on bumpy road sections, the small range of up-and-down fluctuations between the second and first frames will be absorbed by the elastic mechanism, while the reset mechanism can quickly correct the offset wheel assembly, avoiding excessive unilateral swaying, ensuring that the first frame always remains stable, and effectively eliminating the impact of bumps on the first frame. Attached Figure Description

[0015] Figure 1 : This is a schematic diagram of the overall structure of the present invention; Figure 2 : This is a schematic diagram of the main structure of the present invention; Figure 3 : This is a schematic diagram of the elastic mechanism of the present invention; Figure 4 Figure 1 is a schematic diagram of the reset mechanism of the present invention. Figure 5 :for Figure 4 A schematic diagram of the cross-sectional structure; Figure 6 This is a bottom-view structural diagram of the present invention; Figure 7 :for Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0016] Wherein: 10, First frame; 20, Second frame; 201, Side tilting frame; 202, Accommodation area; 203, Connecting bearing; 204, Guide groove; 30, Wheel assembly; 40, Elastic mechanism; 401, First base; 402, Second base; 403, Limiting screw; 404, First elastic spring; 50, Reset mechanism; 501, Reset base; 502, Reset spring; 503, Limit buffer pad; 504, Protruding end; 505, Mounting bolt; 506, Mounting pull ring; 507, Reset shaft; 60, Connecting column; 70, Connecting hole. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0018] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0019] 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", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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 device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0023] Example 1: The purpose of this invention is to provide a double-layer shock-absorbing chassis: The system includes a first frame 10, a second frame 20, and a wheeled assembly 30. Two sets of wheeled assemblies 30 are symmetrically arranged on both the front and rear ends of the second frame 20. The first frame 10 has a rectangular frame structure and is located directly above the second frame 20. The first and second frames 10 are arranged parallel to each other. Multiple mounting holes are pre-drilled at the top of the first frame 10 for securely mounting the equipment and its components, serving as the core load-bearing frame to support the overall weight of the equipment. At least four sets of elastic mechanisms 40 are evenly distributed between the first and second frames 10, corresponding to the four corners of the second frame 20, ensuring even force distribution and specifically designed to buffer vertical bumps and reduce vertical vibrations. The impact of the sway on the first frame 10; the wheel assembly 30 is rotatably and slidably connected to the second frame 20, and is diagonally pulled on both sides by the reset mechanism 50, which ensures that the second frame 20 does not deviate in the horizontal direction. In addition, when swaying or shaking occurs, the symmetrically arranged reset mechanism 50 can also effectively ensure that the whole does not swing too much, thereby improving the overall stability; when encountering complex sections such as potholes, gravel, and mud, the wheels drive the wheel assembly 30 and the second frame 20 to produce small-range up-and-down undulations and lateral swaying. These bumpy actions are absorbed and canceled by the compression buffer of the elastic mechanism 40 and the tension constraint of the reset mechanism 50, thereby ensuring that the first frame 10 and the equipment above it always operate smoothly and are not affected by bumps.

[0024] Furthermore, the elastic mechanism 40 includes a first base 401, a second base 402, a limiting screw 403, and a first elastic spring 404. The first base 401 and the second base 402 are arranged opposite to each other and are connected by the first elastic spring 404. The end of the limiting screw 403 passes through the second limiting base and is threaded onto the first base 401, forming the elastic mechanism 40. This facilitates the disassembly of the first base 401 and the second base 402 while ensuring their relative axial movement. The first elastic spring 404 is a high-strength helical spring, and its initial state is in a compressed state. The compression is controlled between 1 / 4 and 1 / 3 of the total stroke, so that the elastic mechanism 40 always applies a stable preload to the first frame 10 and the second frame 20. This avoids shaking caused by gaps between the frames when the equipment is unloaded, and also... The improved shock absorption response speed ensures immediate cushioning when encountering bumps. When encountering a bump, the second frame 20 moves upward, reducing the distance between the first base 401 and the second base 402, further compressing the first elastic spring 404. The first elastic spring 404 generates a reverse elastic force based on its own elastic potential energy, precisely counteracting the upward bump force. When the bump force disappears, the first elastic spring 404 returns to its original position, pushing the second frame 20 back to its initial position. During this process, the limiting screw 403 can move axially inside the first base 401, which not only limits the relative horizontal offset between the first base 401 and the second base 402, preventing the first elastic spring 404 from lateral torsional deformation, but also provides precise guidance for the compression and return of the first elastic spring 404, ensuring the stable operation of the elastic mechanism 40 and extending the service life of the spring.

[0025] Furthermore, lateral tilting frames 201 are symmetrically arranged on both the front and rear sides of the second frame 20. The projection of the lateral tilting frame 201 is an inverted triangular structure, and a receiving area 202 for mounting the wheel assembly 30 is reserved at its bottom. A connecting bearing 203 is provided through the bottom of the receiving area 202. The connecting bearing 203 is fixedly installed at the bottom end of the lateral tilting frame 201, serving as the core connecting component between the second frame 20 and the wheel assembly 30.

[0026] Furthermore, the wheel assembly 30 includes a receiving platform with a receiving groove 204 on its top. The receiving groove 204 is designed as a waist-shaped structure, and its length matches the height of the elastic mechanism 40 to accommodate the subsequent installation and movement stroke requirements of the elastic mechanism 40.

[0027] Furthermore, during assembly, the guide platform of the wheel assembly 30 is inserted into the receiving area 202 at the bottom of the tilting frame 201 of the second frame 20. Then, the connecting bearing 203 is sequentially inserted into the through hole at the bottom of the receiving area 202 and the guide groove 204 of the guide platform, thus completing the detachable connection between the second frame 20 and the wheel assembly 30. After assembly, the guide platform can slide freely along the axial direction of the receiving area 202 and can swing laterally at a certain angle, thereby realizing the flexible adjustment of the wheel assembly 30 and meeting the movement requirements of the structure.

[0028] Furthermore, the reset mechanism 50 is arranged in a diagonal manner, with its two ends respectively connected to the second frame 20 and the wheel assembly 30 through two reset bases 501. The two reset bases 501 are in a spaced-apart relative state and are connected by a reset spring 502 to provide a reset elastic force for the reset mechanism 50. A buffer assembly is installed on one of the reset bases 501. The buffer assembly is used to achieve buffering and limiting during the operation of the reset mechanism 50 to avoid wear or damage caused by rigid contact between components.

[0029] Specifically, the buffer assembly includes a limit buffer pad 503, which is assembled with the corresponding reset base 501 via a threaded connection. This threaded connection design not only ensures the connection stability of the limit buffer pad 503 after assembly but also facilitates subsequent disassembly, replacement, and position adjustment of the limit buffer pad 503, improving the maintenance convenience of the buffer assembly.

[0030] Furthermore, the two reset bases 501 are respectively connected to the second frame 20 and the wheel assembly 30 via reset shafts 507. The reset shafts 507 allow the reset bases 501 to be rotatably mounted, adapting to the tilting motion requirements of the reset mechanism 50. One of the reset bases 501 protrudes outward to form a protruding end 504, which has a reset hole and is equipped with a mounting pull ring 506 and a mounting bolt 505. One end of the mounting pull ring 506 is rotatably connected to one of the reset shafts 507, and the other end extends towards the other reset shaft 507. The mounting bolt 505 passes through the reset hole on the protruding end 504 of the reset base 501 and is threadedly connected to the mounting pull ring 506. When the mounting bolt 505 is tightened, the two opposing reset bases 501 are driven closer together, thereby compressing the reset spring 502, thus achieving preload adjustment of the reset mechanism 50 to adapt to different structural motion requirements.

[0031] It is understood that the first frame 10 is also provided with a connection hole 70 and a connection post 60, and the second frame 20 is also provided with a connection hole 70 and a connection post 60. The connection hole 70 and the connection post 60 on the contact surface of the two are complementary. The complementary arrangement is such that if the contact surface on the first frame 10 is a connection post 60, then the corresponding position on the second frame 20 is a connection hole 70. The two are adapted to each other.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer shock-absorbing chassis, comprising a first frame (10), a second frame (20), and a wheel assembly (30), characterized in that: The wheel assembly (30) is located at the front and rear ends of the second frame (20). The first frame (10) is located directly above the second frame (20). An elastic mechanism (40) is provided between the first frame (10) and the second frame (20). The wheel assembly (30) is rotatably and slidably connected to the first frame (10) in the middle. Reset mechanisms (50) are symmetrically provided on both sides of the wheel assembly (30). When encountering potholes, the small range of up-and-down fluctuations of the second frame (20) and the wheel assembly (30) are absorbed by the elastic mechanism (40) and the reset mechanism (50), thereby ensuring that the first frame (10) is stable and not affected by bumps.

2. The double-layer shock-absorbing chassis according to claim 1, characterized in that: The elastic mechanism (40) includes a first base (401), a second base (402), a limiting screw (403), and a first elastic spring (404). The first base (401) and the second base (402) are arranged opposite to each other and are connected by the limiting screw (403). An elastic spring is also provided between the first base (401) and the second base (402). When there is a bump or jolt, the distance between the first base (401) and the second base (402) decreases, compressing the elastic spring. The limiting screw (403) can move axially inside the first base (401) or the second base (402).

3. The double-layer shock-absorbing chassis according to claim 2, characterized in that: The elastic spring is initially in a compressed state.

4. The double-layer shock-absorbing chassis according to claim 1, characterized in that: The second frame (20) has a receiving area (202) on both the front and rear sides. The bottom of the receiving area (202) is penetrated by a connecting bearing (203). The wheel assembly (30) includes a receiving platform with a receiving groove (204). The receiving platform extends into the receiving area (202) and is inserted into the receiving area (202) and the receiving groove (204) in sequence through the connecting bearing (203) to connect the wheel assembly (30) and the second frame (20). The receiving platform can slide axially and swing laterally along the receiving area (202).

5. The double-layer shock-absorbing chassis according to claim 4, characterized in that: The second frame (20) is provided with a tilting frame (201) on both the front and rear sides. The projection of the tilting frame (201) is an inverted triangle. The accommodating area (202) is located at the bottom of the tilting frame (201). The connecting bearing (203) is located at the bottom of the tilting frame (201).

6. The double-layer shock-absorbing chassis according to claim 4, characterized in that: The receiving groove (204) is waist-shaped, and its length is equivalent to the height of the elastic mechanism (40).

7. The double-layer shock-absorbing chassis according to claim 1, characterized in that: The reset mechanism (50) is inclined and its two ends are connected to the second frame (20) and the wheel assembly (30) respectively through two reset bases (501). The two reset bases (501) are arranged opposite each other and connected by a reset spring (502). A buffer component is provided on one of the reset bases (501).

8. The double-layer shock-absorbing chassis according to claim 7, characterized in that: The buffer assembly includes a limit buffer pad (503) which is threaded onto the reset base (501).

9. The double-layer shock-absorbing chassis according to claim 7, characterized in that: The reset base (501) is connected to the second frame (20) and the wheel assembly (30) respectively via reset shafts (507). One of the reset bases (501) protrudes outward to form a protruding end (504). The protruding end (504) is provided with a reset hole and also includes a mounting pull ring (506) and a mounting bolt (505). One end of the mounting pull ring (506) is rotatably connected to one of the reset shafts (507), and the other end is close to the other reset shaft (507). The mounting bolt (505) passes through the reset base (501) and is threaded to the mounting pull ring (506). Tightening the mounting bolt (505) can cause the two oppositely arranged reset bases (501) to move closer to each other, thereby compressing the reset spring (502).

Images