A double-layer balance unloading frame of a tricycle

Abstract

The utility model relates to vehicle mechanical structure technical field discloses a tricycle double -deck balanced unloading frame, including support frame, the outer wall sliding connection of support frame has the fixed link, the outer wall fixed connection of fixed link has the connecting frame, the outer wall fixed connection of connecting frame has the butt -joint axle, the lower surface fixed connection of connecting frame has the fixed frame, the inside sliding connection of fixed frame has the screw shaft, the outer wall rotation connection of screw shaft has the lower branch, the outer wall screw thread connection of screw shaft has the nut, the inside sliding connection of fixed link has the central shaft, the inside sliding connection of fixed link has the unloading wear pin, in the utility model, through the mutual cooperation between support frame, fixed link, central shaft, unloading wear pin, lower branch, realizes the effect of layer -by -layer buffer elimination, makes connecting frame and lower branch reach effective unloading balance effect through the effect of double -deck support frame, avoids the tricycle to appear to fall down when moving, guarantees the security of use.

Description

Technical Field

[0001] This utility model relates to the field of vehicle mechanical structure technology, and in particular to a double-layer balance unloading frame for a tricycle. Background Technology

[0002] A tricycle is a simple land vehicle with three wheels, generally divided into two main categories: human-powered tricycles and motorized tricycles. Its most common layout is a single-wheel steering at the front, two-wheel drive at the rear, and a cargo box (a standard three-wheeled vehicle). It has a simple structure, low cost, and strong load-bearing capacity. Traditional tricycles tend to tilt under heavy loads, uneven loads, and on rough roads, severely affecting driving stability and safety. To extend vehicle life, increase load capacity, and ensure driving safety, a double-layer balance and unloading frame is needed for tricycles.

[0003] A double-layer balance unloading frame for tricycles, consisting of a double-layer frame and elastic connection points, significantly reduces the peak impact force transmitted to the chassis. This system plays a crucial role in protecting the vehicle structure, improving driving stability, enhancing off-center load adaptability, and extending vehicle lifespan, enabling ordinary tricycles to more reliably undertake high-load transportation tasks. In existing technologies, ordinary tricycles use a single-layer frame or a simple cargo box floor, lacking a proper unloading structure. When carrying heavy loads or traversing uneven roads, they are prone to metal fatigue, weld cracking, and even beam deformation due to impact forces, resulting in lower safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a double-layer balance unloading frame for tricycles, which aims to improve the problem that ordinary tricycles do not have a good unloading structure, are prone to metal fatigue, weld cracking and even beam deformation due to impact, and have low safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-layer balance unloading frame for a tricycle, comprising a support frame, a fixed rod slidably connected to the outer wall of the support frame, a connecting frame fixedly connected to the outer wall of the fixed rod, a docking shaft fixedly connected to the outer wall of the connecting frame, a fixed frame fixedly connected to the lower surface of the connecting frame, a screw shaft slidably connected to the inside of the fixed frame, a lower support arm rotatably connected to the outer wall of the screw shaft, a nut threadedly connected to the outer wall of the screw shaft, the fixed frame fixedly connected to the lower surface of the support frame, a central shaft slidably connected to the inside of the fixed rod, the outer wall of the central shaft slidably connected to the inside of the support frame, an unloading pin slidably connected to the inside of the fixed rod, the outer wall of the unloading pin slidably connected to the inside of the support frame, a threaded block threadedly connected to the outer wall of the unloading pin, and a connecting assembly provided on the outer wall of the support frame.

[0006] Through the above technical solution: the support frame transmits force to the fixed rod through the central shaft. The fixed rod can absorb and dissipate impact energy through the force-relieving pin. The fixed rod can also swing left and right to effectively eliminate impact. At the same time, the fixed rod transmits force to the connecting frame, and the connecting frame then transmits force to the lower support arm, realizing the effect of layer-by-layer buffering and elimination. In addition, the double-layer support effect of the connecting frame and the lower support arm achieves an effective force-relieving and balancing effect, preventing the tricycle from tipping over when moving and ensuring the safety of use.

[0007] Preferably, the connecting assembly includes a connecting shaft, the outer wall of which is slidably connected to the inside of the support frame, and a fixing block is slidably connected to the outer wall of the connecting shaft, the outer wall of which is fixedly connected to the outer wall of the support frame.

[0008] Preferably, a limiting post is engaged inside the connecting shaft, and the outer wall of the limiting post is slidably connected inside the fixing block.

[0009] Preferably, a baffle is fixedly connected to the outer wall of the limiting post, and the outer wall of the baffle is slidably connected to the inside of the fixing block.

[0010] Preferably, a pull ring is fixedly connected to the top of the limiting post, and a locking post is fixedly connected to the outer wall of the limiting post.

[0011] Preferably, the outer wall of the limiting post is slidably connected to the limiting sleeve, the outer wall of the limiting sleeve is fixedly connected to the outer wall of the support frame, and the outer wall of the locking post is slidably connected to the inner wall of the limiting sleeve.

[0012] Preferably, a spring is fitted on the outer wall of the limiting post, the top end of the spring is fixedly connected to the inside of the fixing block, and the bottom end of the spring is fixedly connected to the outer wall of the baffle.

[0013] Preferably, the inner wall of the connecting shaft is slidably connected to a stop block, the outer wall of the stop block is fixedly connected to the inside of a fixed block, the outer wall of the connecting shaft is provided with a slot, and the outer wall of the stop block is slidably connected to the inner wall of the slot.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the mutual cooperation between the support frame, the fixing rod, the central shaft, the stress-relieving pin, and the lower support arm achieves the effect of layer-by-layer buffering and elimination, so that the connecting frame and the lower support arm achieve effective stress relief and balance through the effect of double-layer support, thereby preventing the tricycle from tipping over when moving and ensuring the safety of use.

[0016] 2. In this utility model, the connecting shaft, limiting post, baffle, spring, pull ring, limiting sleeve, and locking post can be used to quickly install and disassemble the connecting shaft, making the installation and disassembly of the connecting shaft more convenient and the replacement and maintenance bracket more convenient and faster, effectively improving the ease of use and work efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a double-layer balance unloading frame for a tricycle proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the central shaft of a double-layer balance unloading frame for a tricycle proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the pull ring of a double-layer balance unloading frame for a tricycle proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the stop block of a double-layer balance unloading frame for a tricycle proposed in this utility model.

[0021] Legend:

[0022] 1. Support frame; 2. Fixing rod; 3. Connecting frame; 4. Connecting shaft; 5. Unloading pin; 6. Lower support arm; 7. Fixing frame; 8. Screw shaft; 9. Nut; 10. Central shaft; 11. Fixing block; 12. Connecting shaft; 13. Limiting post; 14. Baffle; 15. Spring; 16. Pull ring; 17. Limiting sleeve; 18. Locking post; 19. Stop block; 20. Locking groove; 21. Threaded block. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figure 1 and Figure 2This utility model provides an embodiment of a three-wheeled vehicle double-layer balance unloading frame, including a support frame 1, a fixed rod 2 slidably connected to the outer wall of the support frame 1, a connecting frame 3 fixedly connected to the outer wall of the fixed rod 2, a docking shaft 4 fixedly connected to the outer wall of the connecting frame 3, a fixed frame 7 fixedly connected to the lower surface of the connecting frame 3, a screw shaft 8 slidably connected to the inside of the fixed frame 7, a lower support arm 6 rotatably connected to the outer wall of the screw shaft 8, a nut 9 threadedly connected to the outer wall of the screw shaft 8, a fixed frame 7 fixedly connected to the lower surface of the support frame 1, a central shaft 10 slidably connected to the inside of the fixed rod 2, a central shaft 10 slidably connected to the outer wall of the central shaft 10 slidably connected to the inside of the support frame 1, an unloading pin 5 slidably connected to the inside of the fixed rod 2, a threaded block 21 threadedly connected to the outer wall of the unloading pin 5, and a connecting component provided on the outer wall of the support frame 1;

[0025] Specifically, support frame 1 supports fixed rod 2, fixed rod 2 fixes connecting frame 3, connecting frame 3 fixes docking shaft 4, fixed rod 2 fixes fixed frame 7, fixed frame 7 supports screw shaft 8, and screw shaft 8 supports lower support arm 6. After screw shaft 8 passes through lower support arm 6, nut 9 is threaded onto screw shaft 8, which fixes lower support arm 6 inside fixed frame 7. Through the double-layer support of connecting frame 3 and lower support arm 6, the concentrated load or off-center load applied by the cargo can be decomposed and transmitted to multiple dispersed connection points in the lower layer, forcing the impact force to be transmitted along the designed rigid frame, avoiding direct and localized force acting on the fragile original single-layer floor or beam of the vehicle, thereby preventing deformation or breakage caused by stress concentration. At the same time, a rubber sleeve is installed inside lower support arm 6, which can achieve a buffering effect, thereby realizing the force relief. Both ends of the lower support arm 6 are equipped with protective rubber sleeves. The support frame 1 and the fixed rod 2 are connected by a central shaft 10. The central shaft 10 is not fixed inside the fixed rod 2 and the support frame 1, but can swing left and right. At the same time, the fixed rod 2 has a stress-relieving pin 5 inside its two ends, which passes through the support frame 1. The stress-relieving pin 5 is connected to the threaded block 21 by the thread, which realizes the installation and disassembly effect. The stress-relieving pin 5 is fitted with a high-strength rubber bushing or polyurethane elastomer. When subjected to impact, the stress-relieving pin 5 allows these elastic elements to undergo controllable compression, shearing or torsional deformation, thereby absorbing and dissipating impact energy, which can make the fixed rod 2 swing. At the same time, the stress-relieving pin 5 also limits the maximum range of deformation of the buffer element, preventing structural instability due to excessive deformation, ensuring that the stress relief process is carried out within a safe and controllable range, and protecting the connection point between the lower support arm 6 and the fixed frame 7 from damage.

[0026] Reference Figure 1 and Figure 3The connecting component includes a connecting shaft 12, the outer wall of the connecting shaft 12 is slidably connected to the inside of the support frame 1, and a fixing block 11 is slidably connected to the outer wall of the connecting shaft 12, and the outer wall of the fixing block 11 is fixedly connected to the outer wall of the support frame 1.

[0027] Specifically, the support frame 1 supports the connecting shaft 12, the support frame 1 fixes the fixing block 11, the fixing block 11 supports the connecting shaft 12, and the connecting shaft 12 is used to connect components such as wheels.

[0028] Reference Figure 3 The connecting shaft 12 is internally engaged with a limiting post 13, and the outer wall of the limiting post 13 is slidably connected to the inside of the fixing block 11. A baffle 14 is fixedly connected to the outer wall of the limiting post 13, and the outer wall of the baffle 14 is slidably connected to the inside of the fixing block 11. A pull ring 16 is fixedly connected to the top of the limiting post 13, and a locking post 18 is fixedly connected to the outer wall of the limiting post 13. A limiting sleeve 17 is slidably connected to the outer wall of the limiting post 13, and the outer wall of the limiting sleeve 17 is fixedly connected to the outer wall of the support frame 1. The outer wall of the locking post 18 is slidably connected to the inner wall of the limiting sleeve 17. A spring 15 is sleeved on the outer wall of the limiting post 13, and the top of the spring 15 is fixedly connected to the inside of the fixing block 11. The bottom of the spring 15 is fixedly connected to the outer wall of the baffle 14.

[0029] Specifically, the fixing block 11 limits the offset of the limiting post 13, and the limiting post 13 limits the offset of the connecting shaft 12. When the limiting post 13 is locked inside the connecting shaft 12, it prevents the connecting shaft 12 from disengaging from the fixing block 11, thus achieving a fixing effect. The limiting post 13 fixes the baffle 14, and the baffle 14 supports the spring 15. The limiting post 13 fixes the pull ring 16 and the locking post 18, and the locking post 18 limits the offset of the pull ring 16. The outer wall of the locking post 18 has an L-shaped groove, which limits the locking post 18. When the limiting post 13 moves downward, the locking post 18 will move within the vertical groove. When the pull ring 16 is rotated, the limiting post 18 will move downward. When the 13 rotates synchronously, the locking pin 18 can be locked in the transverse slide groove. When the pull ring 16 moves downward, pulling the pull ring 16 upward will cause the limiting pin 13 to move inside the fixing block 11 and the connecting shaft 12, thereby releasing the limiting pin 13 from the limiting offset effect on the connecting shaft 12, so that the connecting shaft 12 can be taken out. At the same time, when the pull ring 16 moves, the baffle 14 will squeeze the spring 15. After the locking pin 18 is locked in the slide groove of the limiting sleeve 17, the spring 15 will restore its elasticity, and through the elasticity, the locking pin 18 will be stably locked inside the limiting sleeve 17, achieving the installation function. Through the effect of quick installation and disassembly, operation time can be saved and work efficiency can be improved.

[0030] Reference Figure 4A stop 19 is slidably connected to the inner wall of the connecting shaft 12, and the outer wall of the stop 19 is fixedly connected to the inside of the fixed block 11. A slot 20 is provided on the outer wall of the connecting shaft 12, and the outer wall of the stop 19 is slidably connected to the inner wall of the slot 20.

[0031] Specifically, the fixing block 11 has a fixing effect on the stop block 19. The outer wall of the connecting shaft 12 is provided with a sliding groove. One end of the outer wall of the connecting shaft 12 is flat. After the connecting shaft 12 moves into the fixing block 11, the flat side makes the connecting shaft 12 match the stop block 19. Then, the connecting shaft 12 is rotated so that the stop block 19 is stuck in the groove of the connecting shaft 12, which can achieve the function of auxiliary limiting. When it needs to be removed, the connecting shaft 12 is rotated so that the stop block 19 is disengaged from the sliding groove of the connecting shaft 12 and the flat side of the connecting shaft 12 is attached to the connecting shaft 12, so that it can be removed.

[0032] Working principle: When in use, if the wheel is impacted, the support frame 1 transmits the force to the fixed rod 2 through the central shaft 10. The fixed rod 2 absorbs and dissipates the impact energy through the stress-relieving pin 5. The fixed rod 2 can also swing left and right to effectively eliminate the impact. At the same time, the fixed rod 2 transmits the force to the connecting frame 3. The connecting frame 3 is connected to one end of the lower support arm 6 through the fixed frame 7 and the screw shaft 8. The other end of the lower support arm 6 is connected to the support frame 1 through the fixed frame 7 and the screw shaft 8. After the connecting frame 3 receives the force, it will transmit it to the lower support arm 6. The lower support arm 6 can achieve a buffering effect through the built-in rubber sleeves at both ends. Through the layered transmission of force, the concentrated impact force applied by the cargo can be decomposed into multiple component forces in multiple directions, avoiding stress concentration at a single weak point and effectively achieving the stress-relieving effect.

[0033] Rotating the pull ring 16 causes the limiting post 13 to rotate, which in turn causes the locking post 18 to rotate, thus disengaging the locking post 18 from the transverse groove of the limiting sleeve 17. At this point, pulling the pull ring 16 will disengage the limiting post 13 from the interior of the connecting shaft 12, achieving the function of disassembling the connecting shaft 12. When the pull ring 16 moves upward, it will apply static pressure to the spring 15. When the locking post 18 is locked back into the transverse groove of the limiting sleeve 17, the spring 15 will restore its elasticity, thus ensuring the stability of the locking post 18. At the same time, the restored elasticity of the spring 15 will stably lock the limiting post 13 inside the connecting shaft 12, achieving a fixing function and thus achieving a quick installation effect. This device can not only achieve effective force relief and balance through the double-layer bracket, preventing the tricycle from tipping over during movement and ensuring the safety of use, but also make the replacement and maintenance of the bracket more convenient and faster by starting the installation and disassembly of the connecting shaft 12, effectively improving the ease of use.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-layer balance unloading frame for a tricycle, comprising a support frame (1), characterized in that: A fixed rod (2) is slidably connected to the outer wall of the support frame (1), a connecting frame (3) is fixedly connected to the outer wall of the fixed rod (2), a mating shaft (4) is fixedly connected to the outer wall of the connecting frame (3), a fixed frame (7) is fixedly connected to the lower surface of the connecting frame (3), a screw shaft (8) is slidably connected inside the fixed frame (7), a lower support arm (6) is rotatably connected to the outer wall of the screw shaft (8), a nut (9) is threadedly connected to the outer wall of the screw shaft (8), and the fixed frame (7) The outer wall of the fixed rod (2) is fixedly connected to the lower surface of the support frame (1). The inner wall of the fixed rod (2) is slidably connected to the central shaft (10). The outer wall of the central shaft (10) is slidably connected to the inside of the support frame (1). The inner wall of the fixed rod (2) is slidably connected to the unloading pin (5). The outer wall of the unloading pin (5) is slidably connected to the inside of the support frame (1). The outer wall of the unloading pin (5) is threadedly connected to the threaded block (21). The outer wall of the support frame (1) is provided with a connecting component.

2. The double-layer balance unloading frame for a tricycle according to claim 1, characterized in that: The connecting assembly includes a connecting shaft (12), the outer wall of which is slidably connected to the inside of the support frame (1), and a fixing block (11) is slidably connected to the outer wall of the connecting shaft (12), the outer wall of which is fixedly connected to the outer wall of the support frame (1).

3. The double-layer balance unloading frame for a tricycle according to claim 2, characterized in that: The connecting shaft (12) is internally engaged with a limiting post (13), and the outer wall of the limiting post (13) is slidably connected to the inside of the fixing block (11).

4. The double-layer balance unloading frame for a tricycle according to claim 3, characterized in that: The outer wall of the limiting post (13) is fixedly connected to a baffle (14), and the outer wall of the baffle (14) is slidably connected to the inside of the fixing block (11).

5. A double-layer balance unloading frame for a tricycle according to claim 3, characterized in that: A pull ring (16) is fixedly connected to the top of the limiting post (13), and a locking post (18) is fixedly connected to the outer wall of the limiting post (13).

6. A double-layer balance unloading frame for a tricycle according to claim 5, characterized in that: The outer wall of the limiting post (13) is slidably connected to the limiting sleeve (17), the outer wall of the limiting sleeve (17) is fixedly connected to the outer wall of the support frame (1), and the outer wall of the locking post (18) is slidably connected to the inner wall of the limiting sleeve (17).

7. A double-layer balance unloading frame for a tricycle according to claim 3, characterized in that: A spring (15) is fitted on the outer wall of the limiting post (13). The top end of the spring (15) is fixedly connected to the inside of the fixing block (11), and the bottom end of the spring (15) is fixedly connected to the outer wall of the baffle (14).

8. A double-layer balance unloading frame for a tricycle according to claim 2, characterized in that: The inner wall of the connecting shaft (12) is slidably connected to a stop (19), the outer wall of the stop (19) is fixedly connected to the inside of the fixing block (11), the outer wall of the connecting shaft (12) is provided with a slot (20), and the outer wall of the stop (19) is slidably connected to the inner wall of the slot (20).

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