Bow-shaped frame structure

Abstract

The utility model provides a bow-shaped frame structure which comprises a frame body, and the front end and the rear end of the frame body are fixedly connected with a first connecting piece and a second connecting piece respectively. The outer side wall of the first connecting piece is movably connected with an adjusting end. The outer side wall of the second connecting sheet is movably connected with a fixed end; a stress balance cable is detachably connected between the fixed end and the adjusting end; an adjusting device is mounted at the bottom of the frame main body and is used for adjusting the tensioning force of the stress balance cable between the front end and the rear end of the frame main body; according to the utility model, the stress balance cable is arranged between the front end and the rear end of the frame main body, so that a unique anti-deformation structure is formed; the stress balance cable can uniformly disperse stress when the frame is stressed, so that the problem of stress concentration is avoided; the deformation of the frame is reduced; compared with a traditional vehicle frame, the vehicle frame with the structure has the advantages that the deformation resistance of the vehicle frame is greatly enhanced, and the service life of the vehicle frame is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicles, and in particular to an arched frame structure. Background Technology

[0002] In recent years, electric tricycles have been widely used in urban short-distance transportation, community services, and rural transportation due to their advantages such as environmental protection, convenience, and economy. With the growth of market demand, the size of electric tricycles has gradually increased to meet more needs for carrying people or goods.

[0003] Traditional electric tricycles typically use a simple frame structure. While this structure can meet basic usage needs when the vehicle is small, its limitations become apparent as the length of the vehicle increases, leading to a softer frame. During riding, especially on poor road conditions or at high speeds, the vehicle often becomes unstable, producing noticeable vibrations. This instability becomes even more pronounced when carrying passengers or cargo, severely impacting riding safety and comfort.

[0004] From a mechanical point of view, when traditional vehicle frames bear the weight of the vehicle itself, the weight of passengers and cargo, and various external forces during driving, the stress distribution is uneven, and stress concentration is easily formed in certain parts. Under such stress concentration for a long time, the frame is prone to fatigue damage, which can lead to frame deformation or even breakage, greatly shortening the service life of the frame.

[0005] In addition, the rigidity of traditional bicycle frames is usually fixed and cannot be adjusted according to different riding conditions and loads. This makes it difficult for the vehicle to achieve optimal performance in different usage scenarios. For example, when riding unloaded, the frame may be too rigid, resulting in a decrease in riding comfort; while when riding fully loaded, the frame may be insufficiently rigid and unable to effectively resist deformation. Utility Model Content

[0006] To address the issues of poor rigidity and easy deformation in traditional tricycle frames in existing technologies, this utility model provides an arched frame structure, aiming to improve the structural strength and comfort of the frame.

[0007] The bow-shaped frame structure provided by this utility model adopts the following technical solution:

[0008] An arched frame structure includes a frame body, with a first connecting piece and a second connecting piece fixedly connected to the front and rear ends of the frame body, respectively; an adjusting end is movably connected to the outer side wall of the first connecting piece; a fixed end is movably connected to the outer side wall of the second connecting piece; a stress balancing line is detachably connected between the fixed end and the adjusting end; an adjusting device is installed at the bottom of the frame body for adjusting the tension force of the stress balancing line between the front and rear ends of the frame body.

[0009] Furthermore, the adjusting end includes a first connecting post, a hanging ring, an adjusting hook, a tensioner, and an adjusting connecting rod; the bottom of the first connecting piece is fixedly connected to the first connecting post; the first connecting post is movably connected to the hanging ring by bolts; an adjusting hook is hung on the hanging ring; the end of the adjusting hook away from the hanging ring is connected to one end of the tensioner; the other end of the tensioner is connected to one end of the fixing connecting rod; the other end of the fixing connecting rod is connected to a stress balance line.

[0010] Furthermore, the tensioner is adjusted by a threaded mechanical adjustment, with threaded holes at both ends of the tensioner. The adjusting hook and adjusting rod are both threadedly connected to the threaded holes, and the pre-tension force of the stress balance line is controlled by the extension length of the threaded connection.

[0011] Furthermore, the fixed end includes a second connecting post, a second hanging ring, and a fixed hook; the bottom of the second connecting piece is fixedly connected to the second connecting post; the second connecting post is movably connected to the second hanging ring by bolts; a fixed hook is hung on the second hanging ring; the end of the fixed hook away from the second hanging ring is connected to a stress balance line.

[0012] Furthermore, the adjusting rod and the fixed hook are respectively provided with connecting rings, and locking buckles are respectively fixedly installed at both ends of the outer side wall of the stress balance line; both ends of the stress balance line pass through the connecting rings and are fixed again by the locking buckles;

[0013] Furthermore, the adjustment device includes an adjustment box, a lifting motor, a lifting rod, and a lifting platform; the adjustment box is bolted to the bottom of the frame body; the lifting motor is bolted to the inside of the adjustment box; the output end of the lifting motor is connected to one end of the lifting rod; the other end of the lifting rod passes through the adjustment box and is fixedly connected to the lifting platform; a fixing module for securing the stress balance line is fixedly installed on the outer wall of the lifting platform.

[0014] Furthermore, the fixing module includes a lower buckle and an upper buckle; the lower buckle is fixedly connected to the outer wall of the lifting platform; the upper buckle is installed on the lower buckle by bolts; the upper buckle and the lower buckle are connected to each other to form a ring structure that surrounds the stress balance line;

[0015] Furthermore, a pressure sensor is installed inside the lower buckle; the pressure sensor is electrically connected to the vehicle's computer and control center, and calculates and automatically adjusts the tension of the balance line, or the tension can be adjusted through the control keys on the vehicle's system, and the instrument panel displays whether the frame has failed.

[0016] In summary, the beneficial effects of this utility model are as follows:

[0017] This invention creates a unique anti-deformation structure by fixing a first connecting piece and a second connecting piece to the front and rear ends of the frame body, respectively, and detachably connecting a stress balancing line between them. The stress balancing line can evenly distribute stress when the frame is under stress, avoiding the problem of stress concentration. When the vehicle is subjected to external forces such as bumps and turns during driving, the stress balancing line can effectively absorb and buffer these external forces, reducing the amount of frame deformation. Compared with traditional frames, this structure greatly enhances the frame's anti-deformation ability and extends the frame's service life.

[0018] In addition, the tension of the stress balance line can be flexibly adjusted via the adjustment device, thereby achieving multi-mode adjustment of frame rigidity. When riding unloaded, the tension of the stress balance line can be appropriately reduced to give the frame a certain degree of elasticity and improve riding comfort. When riding fully loaded, the tension can be increased to enhance the rigidity of the frame and ensure the stability and safety of the vehicle. This adjustable frame rigidity design allows the vehicle to achieve optimal performance in different usage scenarios.

[0019] Finally, by improving the stress distribution of the frame and achieving rigidity adjustment, the risk of frame breakage is effectively reduced; the existence of stress balance clues allows the frame to distribute stress more evenly when under load, reducing the situation of excessive local stress; and the adjustable rigidity design can adjust the strength of the frame according to the actual load, preventing the frame from breaking due to overload; therefore, this utility model greatly improves the reliability, safety and comfort of the frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a plan view of the overall structure of this utility model;

[0022] Figure 3 This is a bottom view of the overall structure of this utility model;

[0023] Figure 4 This utility model Figure 3 An enlarged schematic diagram of part A in the middle;

[0024] Figure 5 This is a schematic diagram of the internal structure of the adjustment box of this utility model.

[0025] As shown in the figure: 1-Chassis body, 2-First connecting piece, 21-First connecting post, 22-Hanging ring one, 3-Second connecting piece, 31-Second connecting post, 32-Hanging ring two, 4-Adjusting hook, 5-Tightener, 6-Adjusting linkage, 7-Stress balance line, 71-Locking buckle, 8-Fixing hook, 9-Adjusting device, 91-Adjusting box, 92-Lifting motor, 93-Push rod, 94-Lifting platform, 95-Lower buckle, 96-Upper buckle, 10-Pressure sensor. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described in detail below:

[0027] This utility model discloses an arched frame structure, such as... Figure 1-3 As shown, an arc-shaped vehicle frame structure includes a frame body 1. A first connecting piece 2 and a second connecting piece 3 are fixedly connected to the front and rear ends of the frame body 1, respectively. An adjusting end is movably connected to the outer side wall of the first connecting piece 2. A fixed end is movably connected to the outer side wall of the second connecting piece 3. A stress balancing line 7 is detachably connected between the fixed end and the adjusting end. An adjusting device 9 is installed at the bottom of the frame body 1 to adjust the tension of the stress balancing line 7 between the front and rear ends of the frame body 1. In this embodiment, the frame body 1 is the basic structure of the entire arc-shaped vehicle frame, providing mounting support for other vehicle components. The first connecting piece 2 and the second connecting piece 3 are fixedly connected to the front and rear ends of the frame body 1, respectively, and the adjusting end and the fixed end serve as a stress balancing line. The stress balance line 7 is detachably connected between the two at the connection point of the force balance line 7, forming a tension system. The adjustment device 9 is installed at the bottom of the frame body 1. By changing the tension of the stress balance line 7, the stress state between the front and rear ends of the frame is adjusted. This structure creates a deformation-resistant support system at the bottom of the frame. When the vehicle is in motion, the stress balance line 7 can disperse the stress on the frame, avoid stress concentration in certain parts, and thus improve the frame elasticity. It reduces fatigue damage to the frame caused by long-term uneven stress, effectively extends the service life of the frame, and reduces the risk of frame breakage. At the same time, the adjustment device 9 can adjust the tension according to different usage scenarios and needs, making the frame more adaptable.

[0028] like Figure 1-3As shown, the adjusting end includes a first connecting post 21, a hanging ring 22, an adjusting hook 4, a tensioner 5, and an adjusting rod 6; the first connecting post 21 is fixedly connected to the bottom of the first connecting piece 2; the hanging ring 22 is movably connected to the first connecting post 21 by bolts; the adjusting hook 4 is hung on the hanging ring 22; one end of the adjusting hook 4 away from the hanging ring 22 is connected to one end of the tensioner 5; the other end of the tensioner 5 is connected to one end of the fixing rod; the other end of the fixing rod is connected to the stress balance line 7; in this embodiment, the first connecting post 21 of the adjusting end is fixedly connected to the bottom of the first connecting piece 2, ensuring the firmness of the connection; the hanging ring 22 is movably connected to the first connecting post 21 by bolts, so that the hanging ring 22 can be adjusted. The rotation relative to the first connecting post 21 increases the flexibility of the connection; the adjusting hook 4 is hung on the hanging ring 22 for easy disassembly and installation; the tensioner 5 connects the adjusting hook 4 and the fixed connecting rod, and the distance between the fixed connecting rod and the adjusting hook 4 can be changed through the adjustment action of the tensioner 5, thereby affecting the tension of the stress balance line 7; the design of the adjusting end makes the installation and adjustment of the stress balance line 7 more convenient; the movable connection method of the hanging ring 22 allows the stress balance line 7 to adjust its angle within a certain range to adapt to different installation and use requirements; the tensioner 5 can precisely control the pre-tension of the stress balance line 7, which can be adjusted by the user according to the actual situation, enhancing the adjustability of the frame structure;

[0029] like Figure 1-3 As shown, the tensioner 5 is adjusted using a threaded mechanical adjustment method. Threaded holes are opened at both ends of the tensioner 5, and the adjusting hook 4 and adjusting rod 6 are both threadedly connected to these holes. The pre-tension of the stress balance line 7 is controlled by the extension length of the threaded connection. The tensioner 5 uses a threaded mechanical adjustment method, with threaded holes at both ends. The adjusting hook 4 and adjusting rod 6 are both threadedly connected to these holes. When the adjusting hook 4 or adjusting rod 6 is rotated, their extension length within the threaded holes of the tensioner 5 changes due to the threaded action. This change in extension length directly affects the overall length of the tensioner 5, thereby controlling the pre-tension of the stress balance line 7. The threaded mechanical adjustment method has advantages such as simple structure, high adjustment accuracy, and good stability. Users can adjust the pre-tension of the stress balance line 7 to achieve preliminary adjustment of the frame rigidity. Moreover, this adjustment method is unaffected by external environmental factors and has high reliability.

[0030] like Figure 1 As shown in Figure 3, the fixed end includes a second connecting post 31, a second hanging ring 32, and a fixed hook 8; the bottom of the second connecting piece 3 is fixedly connected to the second connecting post 31; the second connecting post 31 is movably connected to the second hanging ring 32 by bolts; the fixed hook 8 is hung on the second hanging ring 32; the end of the fixed hook 8 away from the second hanging ring 32 is connected to the stress balance line 7.

[0031] like Figure 1-3 As shown, the adjusting rod 6 and the fixed hook 8 are respectively provided with connecting rings, and locking buckles 71 are fixedly installed at both ends of the outer side wall of the stress balance line 7. The two ends of the stress balance line 7 pass through the connecting rings and are fixed again by the locking buckles 71. In this embodiment, the adjusting rod 6 and the fixed hook 8 are respectively provided with connecting rings. After the two ends of the stress balance line 7 pass through the connecting rings, they are fixed again by the locking buckles 71. The locking buckles 71 can prevent the stress balance line 7 from sliding or falling off in the connecting rings, ensuring that the connection between the stress balance line 7 and the adjusting end and the fixed end is firm and reliable. This connection method enhances the connection stability between the stress balance line 7 and the adjusting end and the fixed end. The use of locking buckles 71 further improves the reliability of the connection and avoids the stress balance line 7 from loosening due to vibration and other reasons during vehicle operation, ensuring the effectiveness of the entire anti-deformation structure.

[0032] like Figure 4 , 5 As shown, the adjustment device 9 includes an adjustment box 91, a lifting motor 92, a lifting rod 93, and a lifting platform 94. The adjustment box 91 is bolted to the bottom of the frame body 1. The lifting motor 92 is bolted to the inside of the adjustment box 91. One end of the lifting rod 93 is connected to the output end of the lifting motor 92. The other end of the lifting rod 93 passes through the adjustment box 91 and is fixedly connected to the lifting platform 94. A fixing module for securing the stress balance wire 7 is fixedly installed on the outer wall of the lifting platform 94. In this embodiment, the adjustment box 91 of the adjustment device 9 is installed at the bottom of the frame body 1 to provide protection and support for the internal lifting motor 92. The lifting motor 92 serves as a power source, and its output end... The top rod 93 is connected; when the lifting motor 92 is working, it drives the top rod 93 to move linearly; the other end of the top rod 93 passes through the adjustment box 91 and is fixedly connected to the lifting platform 94. The movement of the top rod 93 drives the lifting platform 94 to move up and down; the fixing module on the outer wall of the lifting platform 94 fits the stress balance line 7, and the up and down movement of the lifting platform 94 changes the tension of the stress balance line 7; by controlling the operation of the lifting motor 92, the tension of the stress balance line 7 can be adjusted in real time according to the actual driving conditions and load conditions of the vehicle, thereby realizing multi-mode adjustment of the frame rigidity; this allows the frame to maintain good stability and deformation resistance under different working conditions;

[0033] like Figure 4 , 5As shown, the fixing module includes a lower buckle 95 and an upper buckle 96; the lower buckle 95 is fixedly connected to the outer wall of the lifting platform 94; the upper buckle 96 is installed on the lower buckle 95 by bolts; the upper buckle 96 and the lower buckle 95 are connected to each other to form a ring structure that surrounds the stress balance wire 7; in this embodiment, this structure is simple and easy to install and disassemble, and can firmly fix the stress balance wire 7 on the lifting platform 94; the fixing module provides a reliable fixing method for the stress balance wire 7; its detachable design facilitates the installation and replacement of the stress balance wire 7, and also facilitates the maintenance and repair of the adjustment device 9; by firmly fixing the stress balance wire 7 on the lifting platform 94, it is ensured that the adjustment device 9 can accurately adjust the tension of the stress balance wire 7;

[0034] like Figure 4 , 5 As shown, a pressure sensor 10 is installed inside the lower buckle 95; the pressure sensor 10 is electrically connected to the vehicle computer and control center; in this embodiment, the pressure sensor 10 installed inside the lower buckle 95 can monitor the pressure generated by the stress balance line 7 on the lower buckle 95 in real time, and this pressure is related to the tension of the stress balance line 7; the pressure sensor 10 converts the monitored pressure signal into an electrical signal and transmits it to the vehicle computer and control center; the vehicle computer and control center analyze and process the received signal to determine whether the current tension of the stress balance line 7 is appropriate, and can control the operation of the lifting motor 92 as needed to realize the automatic adjustment of the tension of the stress balance line 7;

[0035] The pressure sensor 10 enables real-time monitoring and intelligent control of the tension force of the stress balance line 7. The vehicle computer and control center can adjust the tension force of the stress balance line 7 according to the actual operating conditions of the vehicle. In addition, when the stress balance line 7 breaks, the pressure sensor 10 is completely unloaded, the vehicle system will issue an alarm, the instrument will display a frame failure indicator, and prompt maintenance.

[0036] The implementation principle of this utility model embodiment is as follows:

[0037] Installation phase:

[0038] Install the main frame onto the electric tricycle according to the design requirements, ensuring that the connection between the main frame 1 and other vehicle components is accurate and secure. Fix the first connecting piece 2 and the second connecting piece 3 to the front and rear ends of the main frame 1 respectively, ensuring a secure connection and sufficient strength between the connecting pieces and the main frame 1. Fix the first connecting post 21 to the bottom of the first connecting piece 2, and movably connect the first hanging ring 22 to the first connecting post 21 using bolts. Fix the second connecting post 31 to the bottom of the second connecting piece 3, and similarly movably connect the second hanging ring 32 to the second connecting post 31 using bolts. Hang the adjusting hook 4 on the first hanging ring 22, connecting the end of the adjusting hook 4 away from the first hanging ring 22 to the tensioner 5, and the other end of the tensioner 5 to the adjusting rod 6. Hang the fixing hook 8 on the second hanging ring 32, passing both ends of the stress balance line 7 through the connecting rings on the adjusting rod 6 and the fixing hook 8 respectively, and then use the locking buckle 71 to fix both ends of the stress balance line 7 again, ensuring a secure connection. Install the adjusting device 9 at the bottom of the frame, and fit it opposite the stress balance line 7.

[0039] Adjustment phase:

[0040] Pre-tensioning stage: The tensioner 5 is adjusted using a threaded mechanical adjustment method; by rotating the adjusting hook 4 or adjusting link 6, their extension length in the threaded hole of the tensioner 5 is changed, thereby controlling the pre-tensioning force of the stress balance line 7; according to the vehicle's design requirements and actual usage, the stress balance line 7 is adjusted to a suitable pre-tensioning state;

[0041] Dynamic adjustment phase: During vehicle operation, the pressure sensor 10 inside the lower buckle 95 monitors the pressure exerted on the lower buckle 95 by the stress balance line 7 in real time and converts the pressure signal into an electrical signal, which is then transmitted to the vehicle computer and control center. The vehicle computer and control center analyze and process the received signal. If it is determined that the tension of the current stress balance line 7 is inappropriate, such as due to increased vehicle load or changes in road conditions requiring adjustment of the frame rigidity, the vehicle computer and control center will issue a command and then control the lifting motor 92 to work. The lifting motor 92 drives the push rod 93 to move linearly, and the push rod 93 drives the lifting platform 94 to move up and down. The movement of the lifting platform 94 changes the tension of the stress balance line 7, realizing dynamic adjustment of the tension of the stress balance line 7, so that the frame always maintains the optimal stress state.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An arched frame structure, comprising a frame body (1), characterized in that: The front end and rear end of the frame body (1) are respectively fixedly connected to a first connecting piece (2) and a second connecting piece (3); the outer side wall of the first connecting piece (2) is movably connected to an adjustment end; the outer side wall of the second connecting piece (3) is movably connected to a fixed end; a stress balance line (7) is detachably connected between the fixed end and the adjustment end; an adjustment device (9) is installed at the bottom of the frame body (1) to adjust the tension of the stress balance line (7) between the front end and the rear end of the frame body (1).

2. The bow-shaped frame structure according to claim 1, characterized in that... The adjustment end includes a first connecting post (21), a hanging ring (22), an adjustment hook (4), a tensioner (5), and an adjustment connecting rod (6); the bottom of the first connecting piece (2) is fixedly connected to the first connecting post (21); the first connecting post (21) is movably connected to the hanging ring (22) by bolts; the hanging ring (22) is hung with the adjustment hook (4); the end of the adjustment hook (4) away from the hanging ring (22) is connected to the end of the tensioner (5); the other end of the tensioner (5) is connected to the end of the fixed connecting rod; the other end of the fixed connecting rod is connected to the stress balance line (7).

3. The bow-shaped frame structure according to claim 2, characterized in that... The tensioner (5) is adjusted by threaded mechanical adjustment. Threaded holes are opened at both ends of the tensioner (5). The adjusting hook (4) and the adjusting rod (6) are both threadedly connected to the threaded holes. The pre-tension of the stress balance line (7) is controlled by the extension length of the threaded connection.

4. The bow-shaped frame structure according to claim 2, characterized in that... The fixed end includes a second connecting post (31), a second hanging ring (32), and a fixed hook (8); the bottom of the second connecting piece (3) is fixedly connected to the second connecting post (31); the second connecting post (31) is movably connected to the second hanging ring (32) by bolts; the second hanging ring (32) is provided with a fixed hook (8); the end of the fixed hook (8) away from the second hanging ring (32) is connected to the stress balance line (7).

5. The bow-shaped frame structure according to claim 4, characterized in that... The adjusting rod (6) and the fixed hook (8) are respectively provided with connecting rings, and the outer side wall of the stress balance line (7) is respectively fixedly installed with locking buckles (71) at both ends; the two ends of the stress balance line (7) pass through the connecting rings and are fixed again by the locking buckles (71).

6. The bow-shaped frame structure according to claim 1, characterized in that... The adjustment device (9) includes an adjustment box (91), a lifting motor (92), a push rod (93), and a lifting platform (94); the adjustment box (91) is bolted to the bottom of the frame body (1); the lifting motor (92) is bolted to the inside of the adjustment box (91); the output end of the lifting motor (92) is connected to one end of the push rod (93); the other end of the push rod (93) passes through the adjustment box (91) and is fixedly connected to the lifting platform (94); a fixing module for holding the stress balance line (7) is fixedly installed on the outer wall of the lifting platform (94).

7. The bow-shaped frame structure according to claim 6, characterized in that... The fixing module includes a lower buckle (95) and an upper buckle (96); the lower buckle (95) is fixedly connected to the outer wall of the lifting platform (94); the upper buckle (96) is installed on the lower buckle (95) by bolts; the upper buckle (96) and the lower buckle (95) are connected to each other to form a ring structure that encloses the stress balance line (7).

8. The bow-shaped frame structure according to claim 7, characterized in that... The lower buckle (95) is equipped with a pressure sensor (10); the pressure sensor (10) is electrically connected to the vehicle computer and control center, calculates and automatically adjusts the tension of the stress balance line (7), or adjusts the tension through the control key on the vehicle, and displays whether the frame has failed through the instrument.

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