Fixed connecting device of light-weight aluminum alloy front longitudinal beam

Abstract

The invention discloses a fixing and connecting device of a lightweight aluminum alloy front longitudinal beam, and relates to the technical field of fixing and connecting devices. The fixing and connecting device of the lightweight aluminum alloy front longitudinal beam comprises a front longitudinal beam main body, a fixing and connecting device and a battery fixing device, the device mainly comprises three key components, namely the front longitudinal beam main body, the fixing and connecting device and the battery fixing device, and the fixing and connecting device adopted in the device is the core technology of the invention. The device is complex and fine in design, is specially developed for the characteristics of aluminum alloy materials, and has super-strong stability and compatibility. Reliable connection performance can be maintained in various severe environments, and meanwhile, the quick connector has the characteristics of quick assembly and disassembly, so that various maintenance and replacement operations are greatly facilitated. Due to the characteristic, the method has a wide application prospect in the modern automobile manufacturing industry.

Description

Technical Field

[0001] The invention relates to the technical field of fixed connection devices, and in particular to a fixed connection device for a lightweight aluminum alloy front longitudinal beam. Background Art

[0002] Lightweight aluminum alloy front longitudinal beams play an important role in modern automobile manufacturing because they can effectively reduce the overall weight of the vehicle, improve fuel efficiency, and reduce carbon emissions. Aluminum alloys are widely used in the automotive industry due to their good strength-to-weight ratio. They not only provide sufficient structural strength, but also reduce the vehicle's own weight. The front longitudinal beam is part of the body frame, which is used to absorb and disperse collision energy, protect the safety of occupants, and provide support to fix the suspension system and powertrain. While reducing weight, the fixed connection device must provide sufficient strength and rigidity to ensure driving safety. The welding and connection of aluminum alloys require specially designed processes to avoid material fatigue and connection failure. Common connection technologies include riveting, bolting, bonding and welding. Each method has its advantages and applicable scenarios. Riveting and specially designed bolted connections are often used to solve the difficulties of aluminum alloy connections. By using lightweight aluminum alloy front longitudinal beams, automakers can produce more environmentally friendly vehicles, not only reducing fuel consumption, but also improving the acceleration performance and handling of the vehicle.

[0003] Most of the existing fixed connection devices use bolts to directly fasten the connection, lacking adjustable measures, which is often troublesome when adjusting the scene. At the same time, the installation process requires the help of tools, which is not convenient for installation and disassembly. At the same time, there is a lack of support for multiple sizes, the fixed connection method is relatively single, and the compatibility with other devices is poor. The common fixed connection devices on the market currently rely mainly on bolts for fastening. Although this traditional connection method has its stability, it also has obvious limitations. First, it lacks flexibility, that is, it lacks adjustable measures. In scenarios where the connection position needs to be fine-tuned or repositioned, the fixed connection using bolts is often particularly troublesome. The adjustment steps are cumbersome, time-consuming and labor-intensive. In addition, the existing fixed connection devices lack support for multiple sizes and the connection method is relatively single. Whether it is when connecting components of different sizes or shapes, or when integrating with other types of devices, this fixing method seems to be stretched. Especially in the modern industrial field, the diversity and complexity of equipment are constantly increasing, requiring the connection device to have higher adaptability and compatibility. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fixing and connecting device for a lightweight aluminum alloy front longitudinal beam.

[0005] A fixing and connecting device for a lightweight aluminum alloy front longitudinal beam, comprising a front longitudinal beam body, a side of the front longitudinal beam body being fixedly connected with a fixing and connecting device, and a top of the front longitudinal beam body being fixedly connected with a battery fixing device; The fixed connection device includes a connecting base plate, a connecting baffle is fixedly connected to the side of the connecting base plate, a fixing device is fixedly connected to the side of the connecting baffle, a snap device is fixedly connected to the side of the connecting base plate away from the connecting baffle, a locking device is fixedly connected to the side of the snap device, and the side of the connecting baffle is in contact with the bottom of the front longitudinal beam body.

[0006] Preferably, the fixing device comprises a fixing base, a fixing seat is slidably connected inside the fixing base, a fixing sleeve is sleeved and slidably connected on the fixing seat, a positioning groove adapted to the fixing seat is provided inside the fixing base, a limiting groove is provided on the inner wall of the positioning groove, a positioning block adapted to the positioning groove and the limiting groove is fixedly connected to the top of the fixing seat, a fixing column is fixedly connected to the top of the positioning block, a fixing slot is provided on the top of the fixing column, a fixing rod is passed through and fixedly connected to the inner wall side of the fixing sleeve, a rotating sleeve is slidably connected to the inner wall of the fixing sleeve, a fixing rod opening is provided on the side of the rotating sleeve, a spring rod is fixedly connected to the bottom of the rotating sleeve, and the bottom of the spring rod is fixedly connected to the bottom of the inner wall of the fixing sleeve, and its core component is a fixing base, and a sliding connection design is adopted inside the base so that the fixing column can slide flexibly therein. The fixing column is the key to the fixing structure, and the fixing sleeve is sleeved and slidably connected to ensure that the column can adapt to different usage requirements. In order to enhance the stability of the fixing column, a positioning groove adapted to the fixing column is also designed inside the fixing base. This design allows the fixed column to be accurately positioned in the base, and the positioning is ensured to be accurate and stable by setting the limit groove on the inner wall of the positioning groove. The top of the fixed column is connected with a positioning block that matches the positioning groove and the limit groove, so that the fixed column can not only be firmly fixed at the positioning point, but also improve the stability and vibration resistance of the entire structure, further enhancing the fixing effect. The top of the fixed column is also provided with a fixed slot to facilitate the configuration of other components or for a variety of application scenarios. The inner wall of the fixed sleeve is innovatively connected through the fixed rod. This design can carry additional loads and provide a stable foundation for the installation of the rotating sleeve. The rotating sleeve is the flexible point of the entire device. Its inner wall is slidably connected to the fixed sleeve to ensure free rotation. Through the fixed rod opening on its side, the rotating sleeve provides a flexible fixing position, making adjustment easier and more widely used. In addition, the bottom of the rotating sleeve is cleverly connected to the spring rod, and the bottom of the spring rod is fixedly connected to the bottom of the inner wall of the fixed sleeve to provide elastic support. This elastic connection is particularly important when it is necessary to absorb vibration or provide customized elastic adjustment.

[0007] Preferably, the fixing rod slides in the fixing rod opening, and the fixing column penetrates through the connecting baffle plate and the front longitudinal beam body and is slidably connected with the connecting baffle plate and the front longitudinal beam body.

[0008] Preferably, the buckle device includes a buckle chassis, a side of the buckle chassis is fixedly connected to a fixed buckle, a side of the connecting base plate is fixedly connected to an arc-shaped rail adapted to the fixed buckle, a buckle groove adapted to the fixed buckle is provided on the arc-shaped rail, and the side of the buckle chassis is fixedly connected to the locking device.

[0009] Preferably, the locking device comprises a locking base plate, a connecting plate is fixedly connected to the side of the locking base plate, a first sliding rod is fixedly connected to the top of the locking base plate, a first spring is sleeved and slidably connected to the first sliding rod, a first sliding bracket is sleeved and slidably connected to the first sliding rod, the first spring is arranged between the locking base plate and the first sliding bracket, the bottom of the first sliding rod is fixedly connected to the top of the connecting plate, a sliding opening is opened on the side of the locking base plate, the first sliding bracket penetrates the locking base plate and is slidably connected to the locking base plate through the sliding opening, a fixed guide rail is fixedly connected to the bottom of the locking base plate, a rack is fixedly connected to the inner wall of the first sliding bracket and the fixed guide rail, a connecting frame is slidably connected to the inner wall of the first sliding bracket and the fixed guide rail, a connecting bolt is penetrated and fixedly connected to the side of the connecting frame, and a connecting plate is fixedly connected to the side of the locking base plate, forming a solid basic structure, further improving the overall stability, and a sliding rod is attached to the top of the locking base plate, which not only serves as a support, but also provides a sliding guide for the movable parts of the device. On the sliding rod, a first spring is cleverly sleeved and slidably connected. The significance of this design is that the spring provides additional buffering and adjustment capabilities between the slide bar and the slide bracket, making the entire device more flexible when dealing with vibration or load changes. The slide bracket is also a key part of the slide bar. It works in conjunction with the first spring to effectively promote the flexibility and stability of the locking device. The position of the first spring is designed very reasonably, located between the locking base plate and the slide bracket, which ensures good elastic feedback performance and up and down stability when the device is adjusted. The bottom of the slide bar is firmly connected to the top of the connecting plate to form a complete structural cycle, thereby enhancing the overall stability. In addition, the side of the locking base plate is precisely opened with a sliding opening, so that the sliding bracket can penetrate the locking base plate and slide and connect with the locking base plate through the sliding opening. This design, which has been optimized through long-term testing, not only optimizes the moving trajectory of the sliding bracket, but also improves the flexibility of the device. In order to meet the locking requirements in complex environments, the bottom of the locking base plate is fixedly connected to a fixed guide rail. This design is not only to provide a smooth sliding surface, but also to help support and guide the movement of the device. In addition, on the inner wall of the sliding bracket and the fixed guide rail, each is fixedly connected with a rack. The rack structure enhances the synchronization and force transmission efficiency between the moving parts, allowing the device to operate smoothly and accurately when external force is applied or adjustments are made.

[0010] Preferably, the first sliding bracket includes a bracket base plate, a connecting strip is fixedly connected to the side of the bracket base plate, a fixed bracket is fixedly connected to the side of the connecting strip away from the bracket base plate, the connecting strip is slidably connected to a sliding groove provided on the locking base plate, the first sliding rod passes through the bracket base plate and is slidably connected to the bracket base plate, the bottom of the first spring is fixedly connected to the top of the bracket base plate, the top is fixedly connected to the bottom of the inner wall of the locking base plate, and the side of the connecting plate is fixedly connected to the side of the snap-on chassis.

[0011] Preferably, the battery fixing device comprises a connecting base, a self-locking device is fixedly connected to the side of the connecting base, a mobile device is fixedly connected to the top of the connecting base, a mobile frame is slidably connected to the mobile device, a rotating shaft is fixedly connected to the top of the mobile frame, a first limit frame is rotatably connected to the top of the rotating shaft, a second slide bar is fixedly connected to the top of the first limit frame, a second slide bar is sleeved and slidably connected to the second limit frame, a second slide bar is sleeved and slidably connected to the second limit frame, a second slide bar is sleeved and slidably connected to the second spring, a limit cap is fixedly connected to the top of the second slide bar, and the second spring is arranged between the second limit frame and the limit cap. The mobile frame is the core part of the entire battery fixing mechanism. A rotating shaft is cleverly fixedly connected to the top of the mobile base, and the rotating shaft can be rotatably connected. Such a design makes the overall architecture flexible and adaptable, and also provides a basis for the connection and movement of subsequent components. A first limit frame is connected to the top of the rotating shaft. The role of this limit frame is particularly critical, because it not only assumes the role of fixing, but also lays the foundation for the stability of the sliding connection component. The top of the first limit frame is carefully designed and fixedly connected with a slide bar, which is a surrounding component that can support the sliding connection. A second limit frame is sleeved and slid on this slide bar. The second limit frame further ensures the required fixing and limiting function, and increases the convenience of adjusting the equipment during use. In addition, a second spring is sleeved and slidably connected on this slide bar. The role of this spring is particularly important because it provides resilience for the sliding of the limit frame, so that the second limit frame can automatically reset after being released, thereby improving the convenience and efficiency of operation. A limit cap is provided on the top of the slide bar. This limit cap is not only the end mark of the slide bar, but also provides physical restrictions to prevent the spring and the limit frame from excessive displacement during the sliding process. The position of the second spring is between the second limit frame and the limit cap. Through this layout, an orderly reset process is achieved when the limit frame is offset under the action of external force. All these sliding parts and fixed parts are slidably connected with an adjustment base. This ingenious design makes the entire device efficient and easy to operate when making a series of adjustments. It can not only adapt to different battery sizes, but also achieve fine-tuning and relative stability of the overall structure by adjusting the changes in the chassis.

[0012] Preferably, the self-locking device includes a self-locking frame and a fixing bolt, the top of the self-locking frame passes through and is slidably connected with a conical sliding rod, the side of the conical sliding rod is fixedly connected to a limiting ring, a self-locking opening is opened at the bottom of the inner wall of the self-locking frame, a second sliding bracket is fixedly connected at the middle position of the inner wall of the self-locking frame, the fixing bolt is arranged on the inner wall of the self-locking opening and is slidably connected to the self-locking opening, the bottom of the fixing bolt is fixedly connected to the top of the front longitudinal beam body, and the side of the self-locking frame is fixedly connected to the side of the connecting base.

[0013] Preferably, the moving device includes an adjustment bracket, a side of the adjustment bracket penetrates and is threadedly connected with an adjustment screw, one end of the adjustment screw is fixedly connected to a handle turntable, the end of the adjustment screw away from the handle turntable is rotatably connected to an adjustment base, the top of the connecting base is fixedly connected to a fixed base, and the adjustment base is slidably connected to the top of the connecting base.

[0014] Preferably, the side of the adjustment bracket is fixedly connected to the side of the connection base, and the movable frame is slidably connected to the adjustment base. The present invention provides a fixed connection device for a lightweight aluminum alloy front longitudinal beam. It has the following beneficial effects: 1. The fixing connection device of the lightweight aluminum alloy front longitudinal beam adopts a connection method that is simple to install without the aid of tools. It is convenient and concise to install, stable to install, and compatible with front longitudinal beams of various thicknesses.

[0015] 2. The fixed connection device of the lightweight aluminum alloy front longitudinal beam adopts a snap-on connection device, which is simple to connect. At the same time, the multi-group design enhances the stability of the connection. The circular design is conducive to adjustment according to actual conditions. At the same time, the role of the snap-on slot is conducive to preventing the front longitudinal beam from sliding.

[0016] 3. The fixing and connecting device of the lightweight aluminum alloy front longitudinal beam, the self-locking device of this design realizes a stable connection between the device and the fixing bolts through a simple structure. In actual use, the installation of the self-locking device does not require the use of tools, which simplifies the installation process. Its fast and reliable installation method allows the device to be quickly fixed while ensuring the stability and safety of the structure. This design effectively reduces the installation time and is suitable for various application scenarios, especially when quick installation and disassembly are required.

[0017] 4. The fixed connection device of the lightweight aluminum alloy front longitudinal beam, the battery fixing device of this design is versatile and can adapt to and fix batteries of various sizes. Whether it is a small battery or a large battery, this device can be firmly fixed and connected through its unique structure. In addition, the device is also designed with a flexible angle adjustment function, so that it can support the installation and use of various special-shaped batteries. By adjusting the angle, users can easily adapt to different battery specifications, ensuring that the battery is not restricted during use, maintaining good contact and stability, and broadening the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a fixing and connecting device of a lightweight aluminum alloy front longitudinal beam of the present invention; Figure 2 This is a schematic diagram of the structure of the fixed connection device of the present invention; Figure 3 It is a schematic diagram of the structure of the fixing device of the present invention; Figure 4 This is a schematic diagram of the fixed base structure of the present invention; Figure 5 This is a schematic diagram of the fixed column structure of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing sleeve of the present invention; Figure 7 This is a schematic diagram of the structure of the rotary sleeve of the present invention; Figure 8 This is a schematic diagram of the structure of the buckle device of the present invention; Fig. 9 This is a schematic diagram of the structure of the locking device of the present invention; Fig.10 This is a schematic diagram of the structure of the locking device of the present invention; Fig.11 This is a schematic diagram of the front structure of the locking device of the present invention; Fig.12 This is a schematic diagram of the structure of the battery fixing device of the present invention; Fig.13 It is a partial structural schematic diagram of the battery fixing device of the present invention; Fig.14 It is a structural schematic diagram of the self-locking device of the present invention; Fig.15 It is a schematic diagram of the internal structure of the self-locking device of the present invention; Fig.16 It is a schematic diagram of the structure of the mobile device of the present invention.

[0019] In the figure: 1, front longitudinal beam body; 2, fixed connection device; 3, battery fixing device; 21, connecting bottom plate; 22, connecting baffle; 23, fixing device; 24, buckle device; 25, locking device; 231, fixed base; 232, fixed seat; 233, fixed sleeve; 234, positioning groove; 235, limit groove; 236, positioning block; 237, fixed column; 238, fixed slot; 2310, fixed rod; 2311, rotating sleeve; 2312, fixed rod opening; 2313, spring rod; 241, buckle chassis; 242, fixed buckle; 243, arc-shaped rail; 244, buckle slot; 251, locking bottom plate; 252, connecting plate; 253, first slide rod; 254, first spring; 255, first sliding bracket ; 2551, bracket base plate; 2552, connecting strip; 2553, fixed bracket; 256, sliding opening; 257, fixed guide rail; 258, rack; 259, connecting frame; 2510, connecting bolt; 31, connecting base; 32, self-locking device; 33, moving device; 321, self-locking frame; 322, tapered slide bar; 323, limiting ring; 324, self-locking opening; 325, second sliding bracket; 326, fixing bolt; 331, adjusting bracket; 332, adjusting screw; 333, handle turntable; 334, adjusting base; 335, fixed base; 35, moving frame; 36, rotating shaft; 37, first limiting frame; 38, second slide bar; 39, second limiting frame; 310, second spring; 311, limiting cap. DETAILED DESCRIPTION

[0020] 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. Embodiment 1

[0021] See also Figure 1-Figure 7 The present invention provides a technical solution: comprising a front longitudinal beam body 1, a side of the front longitudinal beam body 1 is fixedly connected with a fixed connection device 2, and a top of the front longitudinal beam body 1 is fixedly connected with a battery fixing device 3; The fixed connection device 2 includes a connecting base plate 21, a connecting baffle 22 is fixedly connected to the side of the connecting base plate 21, a fixing device 23 is fixedly connected to the side of the connecting baffle 22, a snap device 24 is fixedly connected to the side of the connecting base plate 21 away from the connecting baffle 22, a locking device 25 is fixedly connected to the side of the snap device 24, and the side of the connecting baffle 22 is in contact with the bottom of the front longitudinal beam body 1.

[0022] The fixing device 23 includes a fixing base 231, a fixing base 232 is slidably connected inside the fixing base 231, a fixing sleeve 233 is sleeved and slidably connected on the fixing base 232, a positioning groove 234 adapted to the fixing base 232 is provided inside the fixing base 231, a limiting groove 235 is provided on the inner wall of the positioning groove 234, a positioning block 236 adapted to the positioning groove 234 and the limiting groove 235 is fixedly connected to the top of the fixing base 232, and the positioning block 236 is fixedly connected to the top of the fixing base 232. A fixing column 237 is fixedly connected to the top, a fixing slot 238 is opened on the top of the fixing column 237, a fixing rod 2310 passes through and is fixedly connected to the inner wall side of the fixing sleeve 233, a rotating sleeve 2311 is slidably connected to the inner wall of the fixing sleeve 233, a fixing rod opening 2312 is opened on the side of the rotating sleeve 2311, a spring rod 2313 is fixedly connected to the bottom of the rotating sleeve 2311, and the bottom of the spring rod 2313 is fixedly connected to the bottom of the inner wall of the fixing sleeve 233.

[0023] The fixing rod 2310 slides in the fixing rod opening 2312 , and the fixing column 237 penetrates through the connecting baffle 22 and the front longitudinal beam body 1 and is slidably connected with the connecting baffle 22 and the front longitudinal beam body 1 .

[0024] When in use, the fixed base 231 is fixed to the bottom of the inner wall of the front longitudinal beam body, the fixed seat 232 is passed through the interior of the fixed base 231, the positioning block 236 and the limiting groove 235 are matched, and then the fixing sleeve 233 is sleeved on the fixing column 237, the fixing rod 2310 slides along the fixing slot 238 into the interior of the fixing column 237, the fixing sleeve 233 is rotated and pressed, the pressing of the fixing sleeve 233 drives the spring rod 2313 to be compressed, the rotation of the fixing sleeve 233 drives the rotating sleeve 2311 to rotate, the fixing rod 2310 enters the fixing slot 238 and then rotates along the inner wall of the fixing slot 238 under the rotation of the fixing sleeve 233, and the fixing sleeve 233 is released after rotating to the specified position, and the fixing sleeve 233 is moved under the action of the spring rod 2313, and the fixing rod 2310 is buckled in the fixing slot 238. The purpose of connecting and installing without the help of tools is achieved, and the positioning block is convenient for installation and positioning, and the disassembly and assembly are more convenient than the traditional bolt installation. Embodiment 2

[0025] See also Figure 1-Figure 11 On the basis of the first embodiment, the present invention provides a technical solution: the buckle device 24 includes a buckle chassis 241, a fixed buckle 242 is fixedly connected to the side of the buckle chassis 241, an arc-shaped rail 243 matched with the fixed buckle 242 is fixedly connected to the side of the connecting base plate 21, a buckle slot 244 matched with the fixed buckle 242 is opened on the arc-shaped rail 243, and the side of the buckle chassis 241 is fixedly connected to the locking device 25.

[0026] The locking device 25 includes a locking base plate 251, a connecting plate 252 is fixedly connected to the side of the locking base plate 251, a first sliding rod 253 is fixedly connected to the top of the locking base plate 251, a first spring 254 is sleeved and slidably connected to the first sliding rod 253, a first sliding bracket 255 is sleeved and slidably connected to the first sliding rod 253, the first spring 254 is arranged between the locking base plate 251 and the first sliding bracket 255, the bottom of the first sliding rod 253 is fixedly connected to the top of the connecting plate 252, and the locking base plate 251 is fixedly connected to the top of the connecting plate 252. A sliding opening 256 is provided on the side of the plate 251, the first sliding bracket 255 penetrates the locking base plate 251 and is slidably connected to the locking base plate 251 through the sliding opening 256, a fixed guide rail 257 is fixedly connected to the bottom of the locking base plate 251, a rack 258 is fixedly connected to the inner walls of the first sliding bracket 255 and the fixed guide rail 257, a connecting frame 259 is slidably connected to the inner walls of the first sliding bracket 255 and the fixed guide rail 257, and a connecting bolt 2510 penetrates and is fixedly connected to the side of the connecting frame 259.

[0027] The first sliding bracket 255 includes a bracket base plate 2551, a connecting strip 2552 is fixedly connected to the side of the bracket base plate 2551, a fixed bracket 2553 is fixedly connected to the side of the connecting strip 2552 away from the bracket base plate 2551, the connecting strip 2552 is slidably connected to a sliding groove provided on the locking base plate 251, the first sliding rod 253 penetrates the bracket base plate 2551 and is slidably connected to the bracket base plate 2551, the bottom of the first spring 254 is fixedly connected to the top of the bracket base plate 2551, the top of the first spring 254 is fixedly connected to the bottom of the inner wall of the locking base plate 251, and the side of the connecting plate 252 is fixedly connected to the side of the snap chassis 241.

[0028] When in use, the arc-shaped rail 243 is connected to the buckle chassis 241 through the buckle. At the same time, the arc-shaped rail 243 is arc-shaped, which is convenient for adjusting the angle after installation. At the same time, the setting of the buckle slot 244 increases the friction force, thereby preventing accidental rotation. The connecting bolt 2510 is connected to other devices that need to be installed. After the connection is completed, the position of the first sliding bracket 255 is moved up and down. The movement of the first sliding bracket 255 drives the first spring 254 to compress or stretch, and the first sliding bracket 255 is connected to the top of the connecting frame 259. The connecting frame 259 is fixed in a suitable position under the blocking effect of the rack 258. The angle adjustment is achieved after the installation and connection is completed. At the same time, the mobility of the connecting frame 259 can be used to install accessories of various positions and sizes, and the first sliding bracket 255 continuously provides a downward pressure under the action of the first spring 254, so that the bottom of the first sliding bracket 255 is firmly connected to the connecting frame 259. Embodiment 3

[0029] See also Figure 1-Figure 14 On the basis of the first and second embodiments, the present invention provides a technical solution: the battery fixing device 3 includes a connecting base 31, a self-locking device 32 is fixedly connected to the side of the connecting base 31, a moving device 33 is fixedly connected to the top of the connecting base 31, a moving frame 35 is slidably connected to the moving device 33, a rotating shaft 36 is fixedly connected to the top of the moving frame 35, a first limiting frame 37 is rotatably connected to the top of the rotating shaft 36, a second sliding rod 38 is fixedly connected to the top of the first limiting frame 37, a second limiting frame 39 is sleeved and slidably connected to the second sliding rod 38, a second spring 310 is sleeved and slidably connected to the second sliding rod 38, a limiting cap 311 is fixedly connected to the top of the second sliding rod 38, and the second spring 310 is arranged between the second limiting frame 39 and the limiting cap 311 The self-locking device 32 includes a self-locking frame 321 and a fixing bolt 326. The top of the self-locking frame 321 passes through and is slidably connected with a conical sliding rod 322. The side of the conical sliding rod 322 is fixedly connected to a limiting ring 323. A self-locking opening 324 is provided at the bottom of the inner wall of the self-locking frame 321. A second sliding bracket 325 is fixedly connected to the middle position of the inner wall of the self-locking frame 321. The fixing bolt 326 is arranged on the inner wall of the self-locking opening 324 and is slidably connected to the self-locking opening 324. The bottom of the fixing bolt 326 is fixedly connected to the top of the front longitudinal beam body 1, and the side of the self-locking frame 321 is fixedly connected to the side of the connecting base 31.

[0030] When in use, the self-locking frame 321 is manually moved to pass the fixing bolt 326 through the inner wall of the self-locking opening 324, and the self-locking frame 321 is moved to move the fixing bolt 326 to the other end of the inner wall of the self-locking opening 324. During the process of the fixing bolt 326 entering, the conical slide bar 322 is lifted up by the fixing bolt 326, and the limiting ring 323 limits the position of the conical slide bar 322 to prevent the conical slide bar 322 from coming out. The bottom of the conical slide bar 322 is conical, and under the action of gravity, the conical bottom contacts the side of the fixing bolt 326, and automatically falls in the conical state, thereby reducing the relative displacement between the self-locking frame 321 and the fixing bolt 326. The stable installation of the self-locking frame 321 is achieved, and the fixing bolt 326 is always pressed under the action of the conical slide bar 322, so that the self-locking frame 321 is firmly installed. Embodiment 4

[0031] See also Figure 1-Figure 16 On the basis of the first, second and third embodiments, the present invention provides a technical solution: the moving device 33 includes an adjustment bracket 331, the side of the adjustment bracket 331 is penetrated by and threadedly connected with an adjustment screw 332, one end of the adjustment screw 332 is fixedly connected with a handle turntable 333, and the end of the adjustment screw 332 away from the handle turntable 333 is rotatably connected with an adjustment base frame 334, the top of the connecting base 31 is fixedly connected with a fixed base frame 335, and the adjustment base frame 334 is slidably connected to the top of the connecting base 31.

[0032] The side surface of the adjustment bracket 331 is fixedly connected to the side surface of the connection base 31 , and the movable frame 35 is slidably connected to the adjustment base frame 334 .

[0033] When in use, the handle dial 333 is manually rotated, and the rotation of the handle dial 333 drives the adjustment screw 332 to rotate. The adjustment screw 332 rotates and drives the adjustment base frame 334 to adjust the position through the thread. The adjustment base frame 334 moves along the slide rail fixedly connected to the top of the connection base 31, and the battery is placed. The first limit frame 37 is rotated to support the position of the first limit frame 37 and the battery surface. At the same time, the moving frame 35 moves on the adjustment base frame 334, and the battery is fixed during the movement of the adjustment base frame 334. The second limit frame 39 is manually raised so that the inner wall of the second limit frame 39 fits the top of the battery. The second limit frame 39 moves upward to drive the second spring 310 to compress. After the battery is installed, the second limit frame 39 falls under the action of the second spring 310 to stabilize the battery. The installation support for batteries of multiple sizes is achieved, and the battery installation is ensured to be stable.

[0034] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A fixing and connecting device for a lightweight aluminum alloy front longitudinal beam, characterized in that: It comprises a front longitudinal beam body (1), a side surface of the front longitudinal beam body (1) being fixedly connected to a fixing connection device (2), and a top of the front longitudinal beam body (1) being fixedly connected to a battery fixing device (3); The fixed connection device (2) comprises a connection base plate (21), a connection baffle (22) is fixedly connected to the side of the connection base plate (21), a fixing device (23) is fixedly connected to the side of the connection baffle (22), a buckle device (24) is fixedly connected to the side of the connection base plate (21) away from the connection baffle (22), a locking device (25) is fixedly connected to the side of the buckle device (24), and the side of the connection baffle (22) is in contact with the bottom of the front longitudinal beam body (1).

2. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 1, characterized in that: The fixing device (23) comprises a fixing base (231), a fixing base (232) being slidably connected inside the fixing base (231), a fixing sleeve (233) being sleeved and slidably connected on the fixing base (232), a positioning groove (234) matching with the fixing base (232) being provided inside the fixing base (231), a limiting groove (235) being provided on the inner wall of the positioning groove (234), a positioning block (236) matching with the positioning groove (234) and the limiting groove (235) being fixedly connected to the top of the fixing base (232), and the positioning block (236) matching with the positioning groove (234) and the limiting groove (235). 36) is fixedly connected to the top of a fixing column (237), a fixing slot (238) is provided on the top of the fixing column (237), a fixing rod (2310) is passed through and fixedly connected to the side of the inner wall of the fixing sleeve (233), a rotating sleeve (2311) is slidably connected to the inner wall of the fixing sleeve (233), a fixing rod opening (2312) is provided on the side of the rotating sleeve (2311), a spring rod (2313) is fixedly connected to the bottom of the rotating sleeve (2311), and the bottom of the spring rod (2313) is fixedly connected to the bottom of the inner wall of the fixing sleeve (233).

3. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 2, characterized in that: The fixing rod (2310) slides in the fixing rod opening (2312), and the fixing column (237) penetrates the connecting baffle (22) and the front longitudinal beam body (1) and is slidably connected to the connecting baffle (22) and the front longitudinal beam body (1).

4. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 1, characterized in that: The buckle device (24) comprises a buckle chassis (241), a fixed buckle (242) being fixedly connected to a side surface of the buckle chassis (241), an arc-shaped clamping rail (243) matching the fixed buckle (242) being fixedly connected to a side surface of the connecting bottom plate (21), a buckle slot (244) matching the fixed buckle (242) being provided on the arc-shaped clamping rail (243), and a locking device (25) being fixedly connected to a side surface of the buckle chassis (241).

5. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 1, characterized in that: The locking device (25) comprises a locking base plate (251), a connecting plate (252) is fixedly connected to the side of the locking base plate (251), a first sliding rod (253) is fixedly connected to the top of the locking base plate (251), a first spring (254) is sleeved on and slidably connected to the first sliding rod (253), a first sliding bracket (255) is sleeved on and slidably connected to the first sliding rod (253), the first spring (254) is arranged between the locking base plate (251) and the first sliding bracket (255), the bottom of the first sliding rod (253) is fixedly connected to the top of the connecting plate (252), and the locking base plate A sliding opening (256) is provided on the side of the locking base plate (251); the first sliding bracket (255) passes through the locking base plate (251) and is slidably connected to the locking base plate (251) through the sliding opening (256); a fixed guide rail (257) is fixedly connected to the bottom of the locking base plate (251); a rack (258) is fixedly connected to the inner walls of the first sliding bracket (255) and the fixed guide rail (257); a connecting frame (259) is slidably connected to the inner walls of the first sliding bracket (255) and the fixed guide rail (257); a connecting bolt (2510) passes through and is fixedly connected to the side of the connecting frame (259).

6. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 5, characterized in that: The first sliding bracket (255) comprises a bracket bottom plate (2551), a connecting strip (2552) is fixedly connected to the side of the bracket bottom plate (2551), a fixed bracket (2553) is fixedly connected to the side of the connecting strip (2552) away from the bracket bottom plate (2551), the connecting strip (2552) is slidably connected to a sliding groove provided on the locking bottom plate (251), the first sliding rod (253) passes through the bracket bottom plate (2551) and is slidably connected to the bracket bottom plate (2551), the bottom of the first spring (254) is fixedly connected to the top of the bracket bottom plate (2551), the top of the first spring (254) is fixedly connected to the bottom of the inner wall of the locking bottom plate (251), and the side of the connecting plate (252) is fixedly connected to the side of the buckle chassis (241).

7. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 1, characterized in that: The battery fixing device (3) comprises a connecting base (31), a side surface of the connecting base (31) is fixedly connected to a self-locking device (32), the top of the connecting base (31) is fixedly connected to a moving device (33), the moving device (33) is slidably connected to a moving frame (35), the top of the moving frame (35) is fixedly connected to a rotating shaft (36), the top of the rotating shaft (36) is rotatably connected to a first limiting frame (37), the top of the first limiting frame (37) is fixedly connected to a second sliding rod (38), the second sliding rod (38) is sleeved and slidably connected to a second limiting frame (39), the second sliding rod (38) is sleeved and slidably connected to a second spring (310), the top of the second sliding rod (38) is fixedly connected to a limiting cap (311), and the second spring (310) is arranged between the second limiting frame (39) and the limiting cap (311); The self-locking device (32) comprises a self-locking frame (321) and a fixing bolt (326); a conical slide bar (322) passes through the top of the self-locking frame (321) and is slidably connected thereto; a side of the conical slide bar (322) is fixedly connected to a limit ring (323); a self-locking opening (324) is provided at the bottom of the inner wall of the self-locking frame (321); a second sliding bracket (325) is fixedly connected to the middle position of the inner wall of the self-locking frame (321); the fixing bolt (326) is arranged on the inner wall of the self-locking opening (324) and is slidably connected to the self-locking opening (324); the bottom of the fixing bolt (326) is fixedly connected to the top of the front longitudinal beam body (1); and the side of the self-locking frame (321) is fixedly connected to the side of the connecting base (31).

8. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 7, characterized in that: The moving device (33) comprises an adjustment bracket (331), a side surface of the adjustment bracket (331) penetrated by an adjustment screw (332) and threadedly connected thereto, one end of the adjustment screw (332) being fixedly connected to a handle turntable (333), an end of the adjustment screw (332) away from the handle turntable (333) being rotatably connected to an adjustment base frame (334), the top of the connection base (31) being fixedly connected to a fixed base frame (335), and the adjustment base frame (334) being slidably connected to the top of the connection base (31).

9. The fixing and connecting device of a lightweight aluminum alloy front longitudinal beam according to claim 8, characterized in that: The side surface of the adjustment bracket (331) is fixedly connected to the side surface of the connection base (31), and the movable frame (35) is slidably connected to the adjustment base frame (334).

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